WO2024051653A1 - Communication method and apparatus, and device - Google Patents

Communication method and apparatus, and device Download PDF

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Publication number
WO2024051653A1
WO2024051653A1 PCT/CN2023/116805 CN2023116805W WO2024051653A1 WO 2024051653 A1 WO2024051653 A1 WO 2024051653A1 CN 2023116805 W CN2023116805 W CN 2023116805W WO 2024051653 A1 WO2024051653 A1 WO 2024051653A1
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WIPO (PCT)
Prior art keywords
subcarriers
ratio
frequency domain
coding
subcarrier
Prior art date
Application number
PCT/CN2023/116805
Other languages
French (fr)
Chinese (zh)
Inventor
邹通
龚名新
张旭
Original Assignee
华为技术有限公司
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Publication of WO2024051653A1 publication Critical patent/WO2024051653A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling

Definitions

  • the present application relates to the field of communication technology, and in particular, to a communication method, device and equipment.
  • new radio (NR) technology supports orthogonal frequency division multiplexing (discrete Fourier transform spread orthogonal frequency division multiplexing, DFT-S-OFDM) waveform using discrete Fourier transform spread spectrum.
  • DFT-S-OFDM waveforms can effectively reduce the peak to average power ratio (PAPR) of signals, thereby improving coverage.
  • PAPR peak to average power ratio
  • spectrum extension spectral extension
  • frequency-domain spectrum shaping frequency-domain spectrum shaping, FDSS
  • reserved subcarriers can be used to reduce the PAPR of DFT-S-OFDM.
  • FDSS/frequency domain extension/reserved subcarrier technology can effectively reduce PAPR
  • the DFT-S-OFDM waveform using FDSS/frequency domain extension/reserved subcarrier technology is different from the DFT-S-OFDM waveform that does not use FDSS/frequency domain extension/reserved subcarrier technology.
  • the spectral efficiency needs to be increased after frequency domain expansion (for example, the code rate and/or the modulation order need to be increased after frequency domain expansion ), resulting in the system's block error rate (BLER) performance loss gradually increasing, reducing the throughput during uplink transmission. Therefore, how to ensure the BLER performance of the system while reducing PAPR has become a problem to be solved.
  • BLER block error rate
  • This application provides a communication method, device and equipment, which method can optimize the PAPR performance of the transmitted waveform while ensuring the BLER performance of the system.
  • this application provides a first communication method, which can be executed by a terminal device or a network device. Among them, taking the terminal device as the execution subject and the terminal device as the transmitter of coded modulation data as an example, the terminal device determines the number of first subcarriers according to the first coded modulation parameter, and sends the first signal on the second subcarrier. .
  • the first coding modulation parameter is used for coding modulation processing
  • the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier
  • the value of the number of the first subcarrier is related to the value of the first coding modulation parameter; when When the number of first subcarriers is not 0, the second subcarrier includes the frequency domain extension subcarrier and the subcarrier before frequency domain extension, or the second subcarrier includes the reserved subcarrier and the pre-reservation subcarrier. subcarrier.
  • the number of first subcarriers may vary with different first coding modulation parameters. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for data transmission, thereby obtaining greater PAPR performance gain, that is, Yes, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
  • the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order.
  • MCS index corresponds to a coding rate and a modulation order.
  • the first coding modulation parameter is determined based on downlink control information DCI used to schedule current transmission.
  • the first coding modulation parameter is used to schedule the current
  • the transmitted DCI is determined, making the first coding modulation parameter determined by the terminal device more accurate.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 1 is greater than ⁇ 2
  • the first ratio corresponding to ⁇ 1 is smaller than the first ratio corresponding to ⁇ 2
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • this method assumes that there are at least two different coding modulation parameters ⁇ 1 and ⁇ 2 in the first coding modulation parameter set. For example, there may be only In two different coding modulation parameters, when ⁇ 1 is greater than ⁇ 2 , the first ratio corresponding to ⁇ 1 is smaller than the first ratio corresponding to ⁇ 2 , and the first ratio corresponding to other coding modulation parameters may be a fixed value.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ,
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • any two different coding modulation parameters ⁇ 3 and ⁇ 4 in the first coding modulation parameter set are defined to satisfy the requirement that ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ratio.
  • the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ratio.
  • the first ratio corresponding to ⁇ 3 is smaller than the first ratio corresponding to ⁇ 4 .
  • the first ratio corresponding to ⁇ 3 is equal to the first ratio corresponding to ⁇ 4 .
  • ⁇ 1 is a negative real number
  • ⁇ 2 is a positive real number
  • the first ratio ⁇ corresponding to the value x of the first coded modulation parameter is the first value.
  • the relationship between the value x of the first coding modulation parameter and the first ratio ⁇ is defined through a functional relationship. For example, there is a decreasing functional relationship between the value x of the first coding modulation parameter and the first ratio ⁇ , and when the value of the first coding modulation parameter is greater than the first threshold, it means that frequency domain extension or subcarrier reservation causes PAPR If the performance loss is large, frequency domain extension or subcarrier reservation technology is no longer used to reduce PAPR (for example, the first ratio is set to 0).
  • the terminal device may also round the number N of the first subcarriers to obtain the rounded number N' of the first subcarriers, where N' is an integer multiple of the positive integer a.
  • the positive integer a is 1 or 12.
  • the number of first subcarriers determined according to the first coding modulation parameter is not an integer
  • the number of first subcarriers can be rounded so that the number of first subcarriers is the number of resource blocks or An integer multiple of the number of subcarriers in a resource block is beneficial to data transmission.
  • the terminal device performs encoding and modulation processing on the data bits. Specifically, it includes the following process: determining the coding rate according to the first ratio corresponding to the first coding modulation parameter or the first ratio after rounding the number of first subcarriers; encoding the data bits according to the coding rate to obtain the coding codeword; modulate the coded codeword according to the modulation order corresponding to the MCS index to obtain modulation symbols; subject the modulation symbols to discrete Fourier transform processing to obtain frequency domain signals; perform cyclic expansion or subcarriers on the frequency domain signals Set aside processing to obtain the first signal.
  • the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded
  • the corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  • the coding rate is determined based on the first ratio corresponding to the first coding modulation parameter or the first ratio corresponding to the number of first subcarriers after rounding processing, then the frequency domain extension or reserved subcarrier technology will affect Coding modulation process.
  • the method described in the first aspect above can also be executed by a network device.
  • the network device is the sender of coded and modulated data
  • the terminal device is the receiver.
  • the network device when the network device performs the method described in the first aspect, when determining the first coding modulation parameter, there is no need to determine it based on the downlink control information DCI used to schedule the current transmission.
  • the network device can directly obtain the MCS index, or Coding code rate, or modulation order.
  • this application provides a second communication method, which can be executed by a terminal device or a network device.
  • the network device taking the network device as the execution subject and the network device as the receiving end of the coded modulation data as an example, the network device determines the number of the first subcarrier according to the first coded modulation parameter, and receives the first signal on the second subcarrier. .
  • the first coding modulation parameter is used for coding modulation processing
  • the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier
  • the value of the number of the first subcarrier is related to the value of the first coding modulation parameter; when When the number of the first subcarriers is not 0, the second subcarriers include frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarriers include reserved subcarriers and subcarriers before reservation.
  • the number of first subcarriers may vary with different first coding modulation parameters. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for data transmission, thereby obtaining better performance. Large PAPR performance gain, that is, optimizing the PAPR performance of the transmitted waveform while ensuring the BLER performance of the system.
  • the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order.
  • MCS index corresponds to a coding rate and a modulation order.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 1 is greater than ⁇ 2
  • the first ratio corresponding to ⁇ 1 is smaller than the first ratio corresponding to ⁇ 2
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • this method assumes that there are at least two different coding modulation parameters ⁇ 1 and ⁇ 2 in the first coding modulation parameter set. For example, there may be only two different coding modulation parameters.
  • ⁇ 1 is greater than ⁇ 2
  • ⁇ The first ratio corresponding to 1 is smaller than the first ratio corresponding to ⁇ 2
  • the first ratio corresponding to other coding modulation parameters may be a fixed value.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ,
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • any two different coding modulation parameters ⁇ 1 and ⁇ 2 in the first coding modulation parameter set are defined to satisfy the requirement that ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ratio.
  • the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ratio.
  • the first ratio corresponding to ⁇ 3 is smaller than the first ratio corresponding to ⁇ 4 .
  • the first ratio corresponding to ⁇ 3 is equal to the first ratio corresponding to ⁇ 4 .
  • ⁇ 1 is a negative real number
  • ⁇ 2 is a positive real number
  • the first ratio ⁇ corresponding to the value x of the first coded modulation parameter is the first value.
  • the relationship between the value x of the first coding modulation parameter and the first ratio ⁇ is defined through a functional relationship. For example, there is a decreasing functional relationship between the value x of the first coding modulation parameter and the first ratio ⁇ , and when the value of the first coding modulation parameter is greater than the first threshold, it means that frequency domain extension or subcarrier reservation causes PAPR If the performance loss is large, frequency domain extension or subcarrier reservation technology is no longer used to reduce PAPR (for example, the first ratio is set to 0).
  • the network device may also round the number N of the first subcarriers to obtain the rounded number N' of the first subcarriers, where N' is an integer multiple of the positive integer a.
  • the positive integer a is 1 or 12.
  • the number N of the first subcarriers determined according to the first coding modulation parameter is not an integer
  • the number N of the first subcarriers can be rounded so that the number of the first subcarriers is the number of resource blocks.
  • the number or an integer multiple of the number of subcarriers in the resource block is beneficial to data transmission.
  • the network device after receiving the first signal, performs demodulation and decoding processing on the first signal.
  • the process includes the following: performing decyclic expansion or subcarrier reservation processing on the first signal to obtain a frequency domain signal; subjecting the frequency domain signal to inverse discrete Fourier transform processing to obtain a modulation symbol; according to the modulation order corresponding to the MCS index.
  • the code rate decodes the encoded codeword to obtain data bits.
  • the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded
  • the corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  • the coding rate is determined based on the first ratio corresponding to the first coding modulation parameter or the first ratio corresponding to the number of first subcarriers after rounding processing, then the frequency domain extension or reserved subcarrier technology will affect Demodulation and decoding process.
  • the method described in the second aspect above can also be executed by a terminal device.
  • the terminal device It is the receiving end of coded and modulated data
  • the network device is the sending end.
  • the terminal device may determine the first coding modulation parameter according to the downlink control information DCI used to schedule current transmission.
  • this application provides a third communication method, which can be executed by a network device.
  • the network device determines the number of first subcarriers according to the first coding modulation parameter, and sends indication information to the terminal device, where the indication information includes the number of first subcarriers or the first ratio.
  • the first coding modulation parameter is used for coding modulation processing
  • the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier
  • the value of the number of the first subcarrier is related to the value of the coding modulation coefficient
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • the network device receives the first signal from the terminal device on the second subcarrier.
  • the second subcarriers include frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarriers include reserved subcarriers and subcarriers before reservation. carrier.
  • This method can be applied to an uplink data transmission scenario in which the network device sends instruction information to the terminal device, and the terminal device sends coded and modulated data to the network device according to the instruction information.
  • the network device can directly indicate the frequency domain expansion ratio or subcarrier reservation ratio to the terminal device, which facilitates the terminal device to directly encode and modulate the data bits according to the frequency domain expansion ratio or subcarrier reservation ratio to obtain The first signal.
  • the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for coding and modulation processing, thereby obtaining greater PAPR performance gain, and also That is, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
  • the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order, or spectral efficiency.
  • MCS index corresponds to a coding rate and a modulation order.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 1 is greater than ⁇ 2
  • the first ratio corresponding to ⁇ 1 is smaller than the first ratio corresponding to ⁇ 2
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • this method assumes that there are at least two different coding modulation parameters ⁇ 1 and ⁇ 2 in the first coding modulation parameter set. For example, there may be only two different coding modulation parameters.
  • ⁇ 1 is greater than ⁇ 2
  • ⁇ The first ratio corresponding to 1 is smaller than the first ratio corresponding to ⁇ 2
  • the first ratio corresponding to other coding modulation parameters may be a fixed value.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ,
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • any two different coding modulation parameters ⁇ 1 and ⁇ 2 in the first coding modulation parameter set are defined to satisfy the requirement that ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ratio.
  • the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ratio.
  • the first ratio corresponding to ⁇ 3 is smaller than the first ratio corresponding to ⁇ 4 .
  • the first ratio corresponding to ⁇ 3 is equal to the first ratio corresponding to ⁇ 4 .
  • ⁇ 1 is a negative real number
  • ⁇ 2 is a positive real number
  • the first ratio ⁇ corresponding to the value x of the first coded modulation parameter is the first value.
  • the relationship between the value x of the first coding modulation parameter and the first ratio ⁇ is defined through a functional relationship. For example, there is a decreasing functional relationship between the value x of the first coding modulation parameter and the first ratio ⁇ , and when the value of the first coding modulation parameter is greater than the first threshold, it means that frequency domain extension or subcarrier reservation causes PAPR If the performance loss is large, frequency domain extension or subcarrier reservation technology is no longer used to reduce PAPR (for example, the first ratio is set to 0).
  • the network device may also round the number N of the first subcarriers to obtain the rounded number N' of the first subcarriers, where N' is an integer multiple of the positive integer a.
  • the positive integer a is 1 or 12.
  • the number of first subcarriers determined according to the first coding modulation parameter is not an integer
  • the number of first subcarriers can be rounded so that the number of first subcarriers is the number of resource blocks or An integer multiple of the number of subcarriers in a resource block is beneficial to data transmission.
  • the indication information also includes a first ratio corresponding to the rounded number of the first subcarriers, and the first ratio corresponding to the rounded number of the first subcarriers is the frequency domain after rounding.
  • the ratio of the number of extended subcarriers to the number of subcarriers before frequency domain expansion; or, the first ratio corresponding to the number of first subcarriers after rounding is the number of reserved subcarriers after rounding to the number of subcarriers before reservation Quantity ratio.
  • the network device performs demodulation and decoding processing on the received first signal.
  • the process includes the following: performing decyclic expansion or subcarrier reservation processing on the first signal to obtain a frequency domain signal; subjecting the frequency domain signal to inverse discrete Fourier transform processing to obtain a modulation symbol; according to the modulation order corresponding to the MCS index.
  • the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded
  • the corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  • the coding rate is determined based on the first ratio corresponding to the first coding modulation parameter or the first ratio corresponding to the number of first subcarriers after rounding processing, then the frequency domain extension or reserved subcarrier technology will affect Demodulation and decoding process.
  • this application provides a fourth communication method, which can be executed by a terminal device.
  • the terminal device receives indication information from the network device, where the indication information includes the number of first subcarriers or the first ratio.
  • the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier.
  • the number of the first subcarrier is determined based on the first coded modulation coefficient.
  • the value of the number of the first subcarrier is the same as the value of the coded modulation coefficient.
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of subcarriers before reservation.
  • the terminal device sends the first signal to the network device on the second subcarrier, wherein when the number of the first subcarrier is not 0, the second subcarrier includes the frequency domain extended subcarrier and the subcarrier before frequency domain extension. , or the second subcarrier includes the reserved subcarrier and the subcarrier before reservation.
  • This method can be applied in an uplink data transmission scenario in which the network device sends instruction information to the terminal device, and the terminal device sends coded and modulated data to the network device according to the instruction information.
  • the terminal device directly receives the indication information to obtain the indicated frequency domain extension ratio or subcarrier reservation ratio, so that the terminal device directly encodes and modulates the data bits according to the frequency domain extension ratio or subcarrier reservation ratio.
  • the first signal is obtained through processing.
  • the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for coding and modulation processing, thereby obtaining greater PAPR performance gain, and also That is, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
  • the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order, or spectrum efficiency.
  • MCS index corresponds to a coding rate and a modulation order.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 1 is greater than ⁇ 2
  • the first ratio corresponding to ⁇ 1 is smaller than the first ratio corresponding to ⁇ 2
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • this method assumes that there are at least two different coding modulation parameters ⁇ 1 and ⁇ 2 in the first coding modulation parameter set. For example, there may be only two different coding modulation parameters.
  • ⁇ 1 is greater than ⁇ 2
  • ⁇ The first ratio corresponding to 1 is smaller than the first ratio corresponding to ⁇ 2
  • the first ratio corresponding to other coding modulation parameters may be a fixed value.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ,
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • any two different coding modulation parameters ⁇ 1 and ⁇ 2 in the first coding modulation parameter set are defined to satisfy the requirement that ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ratio.
  • the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ratio.
  • the first ratio corresponding to ⁇ 3 is smaller than the first ratio corresponding to ⁇ 4 .
  • the first ratio corresponding to ⁇ 3 is equal to the first ratio corresponding to ⁇ 4 .
  • ⁇ 1 is a negative real number
  • ⁇ 2 is a positive real number
  • the first ratio ⁇ corresponding to the value x of the first coded modulation parameter is the first value.
  • the relationship between the value x of the first coding modulation parameter and the first ratio ⁇ is defined through a functional relationship. For example, there is a decreasing functional relationship between the value x of the first coding modulation parameter and the first ratio ⁇ , and when the value of the first coding modulation parameter is greater than the first threshold, it means that frequency domain extension or subcarrier reservation causes PAPR If the performance loss is large, frequency domain extension or subcarrier reservation technology is no longer used to reduce PAPR (for example, the first ratio is set to 0).
  • the network device may also round the number N of the first subcarriers to obtain the rounded number N' of the first subcarriers, where N' is an integer multiple of the positive integer a.
  • the positive integer a is 1 or 12.
  • the number N of first subcarriers determined according to the first coding modulation parameter is not an integer
  • the number N of first subcarriers can be rounded so that the number of first subcarriers is equal to the number of resource blocks.
  • the number or an integer multiple of the number of subcarriers in the resource block is beneficial to data transmission.
  • the indication information also includes a first ratio corresponding to the rounded number of the first subcarriers, and the first ratio corresponding to the rounded number of the first subcarriers is the frequency domain after rounding.
  • the ratio of the number of extended subcarriers to the number of subcarriers before frequency domain expansion; or, the first ratio corresponding to the number of first subcarriers after rounding is the number of reserved subcarriers after rounding to the number of subcarriers before reservation Quantity ratio.
  • the terminal device determines the encoding code rate based on the first ratio or the corresponding first ratio after rounding the number of first subcarriers; encodes the data bits according to the encoding code rate to obtain the encoded codeword ; Modulate the coded codeword according to the modulation order corresponding to the MCS index to obtain the modulation symbol; subject the modulation symbol to discrete Fourier transform processing to obtain the frequency domain signal; perform cyclic expansion or subcarrier reservation on the frequency domain signal Process and obtain the first signal.
  • the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded
  • the corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  • the coding rate is determined based on the first ratio or the corresponding first ratio after rounding off the number of first subcarriers. Then frequency domain extension or reserved subcarrier technology will affect the coding modulation process.
  • this application provides a communication device.
  • the communication device may be a network device, a device in a network device, or a device that can be used in conjunction with a network device.
  • the communication device may include performing one-to-one correspondence with the methods/operations/steps/actions described in any one of the first to third aspects, and any possible implementation manner of the first to third aspects.
  • the module can be a hardware circuit, a software, or a hardware circuit combined with software.
  • the communication device may include a processing unit and a communication unit.
  • the communication device can also achieve the effects that can be achieved in the first to third aspects.
  • the present application provides a communication device.
  • the communication device may be a terminal device, a device in the terminal device, or a device that can be used in conjunction with the terminal device.
  • the communication device may include performing the method/operation described in any one of the first aspect, the second aspect, and the fourth aspect, and any possible implementation manner of the first aspect, the second aspect, and the fourth aspect.
  • the module corresponding to the steps/actions one-to-one.
  • the module can be a hardware circuit, a software, or a hardware circuit combined with software.
  • the communication device may include a processing unit and a communication unit.
  • the communication device can also achieve the effects that can be achieved in the first aspect, the second aspect and the fourth aspect.
  • the present application provides a communication device.
  • the communication device is composed of an input-output interface and a logic circuit.
  • the input-output interface is used to input or output data;
  • the logic circuit is as follows from the first aspect to the third aspect, Process the data with the method in any possible implementation of the first aspect to the third aspect, and obtain the processed data.
  • the present application provides a communication device.
  • the communication device is composed of an input-output interface and a logic circuit.
  • the input-output interface is used to input or output data; the logic circuit is as described in the first aspect, the second aspect and
  • the method in any possible implementation of the fourth aspect processes data and obtains processed data.
  • the present application provides a network device, including: a processor, the processor is coupled to a memory, and the memory is used to store instructions.
  • the network device implements the above-mentioned first aspect to the third aspect.
  • the present application provides a terminal device, including: a processor, the processor is coupled to a memory, and the memory is used to store instructions.
  • the terminal device implements the above-mentioned first aspect and the third aspect.
  • the present application provides a communication system, which includes a sending end and a receiving end.
  • the sending end is used to implement the functions of the method in the above-mentioned first aspect and fourth aspect, as well as any possible implementation manner of the first aspect and the fourth aspect.
  • the receiving end is configured to implement the functions of the method in the above second aspect and third aspect, as well as any possible implementation manner of the second aspect and third aspect.
  • the communication system may include the communication device as described in the fifth and sixth aspects, or may include the communication device as described in the seventh and eighth aspects, or may include the communication device as described in the ninth and tenth aspects. The device described in the aspect.
  • this application also provides a computer-readable storage medium, the computer-readable storage medium stores instructions, and when the instructions are run on a computer, the computer executes the first to fourth aspects, and the method in any possible implementation manner of the first to fourth aspects.
  • the present application provides a chip system.
  • the chip system includes a processor and may also include a memory, for implementing the above first to fourth aspects, and any possibility of the first to fourth aspects. function in the method of the implementation.
  • the chip system can be composed of chips or include chips and other discrete devices.
  • this application also provides a computer program product, including instructions, which when the instructions are run on a computer, cause the computer to execute any one of the first aspect to the fourth aspect, and the first aspect to the fourth aspect. possible implementation methods.
  • FIG. 1 is a schematic diagram of the communication system provided by this application.
  • Figure 2 is a schematic diagram of frequency domain expansion
  • Figure 3 is a schematic diagram of a frequency domain spectrum shaping
  • Figure 4 is a schematic diagram of the impact of frequency domain extension and FDSS on the PAPR performance of the signal
  • Figure 5 is a schematic diagram of the impact of frequency domain extension and FDSS on the BLER performance of the signal under a time domain filter estimation
  • Figure 6 is a schematic flow chart of the first communication method provided by this application.
  • Figure 7 is a schematic flow chart of the second communication method provided by this application.
  • Figure 8 is a schematic flow chart of the third communication method provided by this application.
  • Figure 9 is a schematic flow chart of the fourth communication method provided by this application.
  • Figure 10 is a schematic diagram of a communication device provided by this application.
  • Figure 11 is a schematic diagram of a communication device provided by this application.
  • A/B can mean A or B;
  • and/or can be used to describe the existence of three relationships between related objects.
  • a and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural.
  • words such as “first” and “second” may be used to distinguish technical features with the same or similar functions. The words “first” and “second” are not logarithmic. The quantity and execution order are limited, and the words “first”, “second” and so on are not necessarily different.
  • this application provides a communication method.
  • the number of frequency domain extension subcarriers or the number of reserved subcarriers can be adjusted according to the coding and modulation scheme, making the PAPR performance of the transmitted waveform higher while ensuring the BLER performance of the system.
  • FIG. 1 is a schematic diagram of a communication system provided by this application.
  • the communication system includes a terminal device and a network device.
  • the network device can provide communication services to the terminal device.
  • the communication systems mentioned in this application include but are not limited to: narrowband-Internet of things (NB-IoT), global system for mobile communications (GSM), enhanced data rate GSM evolution system (enhanced data rate for GSM evolution, EDGE), wideband code division multiple access system (wideband code division multiple access, WCDMA), code division multiple access 2000 system (code division multiple access, CDMA2000), time division synchronous code division multiple access system (
  • NB-IoT narrowband-Internet of things
  • GSM global system for mobile communications
  • GSM global system for mobile communications
  • GSM global system for mobile communications
  • GSM global system for mobile communications
  • GSM global system for mobile communications
  • GSM global system for mobile communications
  • GSM global system for mobile communications
  • GSM global system for mobile communications
  • GSM global system for mobile communications
  • GSM global system for mobile communications
  • GSM global system for mobile communications
  • GSM global system for mobile communications
  • EDGE enhanced data rate GSM evolution system
  • WCDMA wideband code division multiple access
  • the network device may be a device that can communicate with the terminal device.
  • Network devices can be base stations, relay stations, or access points.
  • the base station can be a base transceiver station (BTS) in the global system for mobile communication (GSM) system or code division multiple access (CDMA) network, or it can be a broadband code
  • the 3G base station NodeB in the wideband code division multiple access (WCDMA) system can also be the evolutionary NodeB (referred to as eNB or eNodeB) in the long term evolution (long term evolution, LTE) system.
  • the network device may also be a satellite in a satellite communications system.
  • the network device can also be a wireless controller in a cloud radio access network (CRAN) scenario.
  • CRAN cloud radio access network
  • the network device may also be a network device in a 5G network or a network device in a future evolved public land mobile network (public land mobile network, PLMN) network (such as gNodeB).
  • Network devices can also be wearable devices, drones, or devices in the Internet of Vehicles (such as vehicle to everything (V2X)), or communication devices in device-to-device (D2D) communication. Or network equipment used in future communication systems.
  • V2X vehicle to everything
  • D2D device-to-device
  • the terminal device can be a user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a terminal, a wireless communication device, a terminal agent or a terminal.
  • UE user equipment
  • an access terminal a terminal unit
  • a terminal station a mobile station
  • a mobile station a mobile station
  • a remote station a remote terminal
  • a mobile device a terminal
  • a wireless communication device a terminal agent or a terminal.
  • the access terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a device with wireless communications Functional handheld devices, computing devices or other processing devices connected to wireless modems, wearable devices, drones, V2X devices, D2D devices, terminal devices in 5G networks, terminal devices in future evolved PLMN networks or in the future Terminal equipment in communication systems, etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • PAPR Peak-to-average power ratio
  • PAPR is defined as the ratio of the peak power to the average power of the signal. Since the dynamic range of the power amplifier is limited, too high PAPR will cause the power amplification to enter the nonlinear region, causing nonlinear distortion of the signal, causing spectrum expansion and in-band signal distortion, and reducing system performance. In order to prevent the signal from entering the nonlinear region, power backoff operation needs to be performed. Among them, the higher the PAPR, the higher the power required to be rolled back. However, power rollback will lead to a decrease in coverage performance, so reducing PAPR is conducive to improving coverage performance. Among them, the PAPR of the DFT-S-OFDM signal can be reduced through spectrum extension (spectral extension) and frequency-domain spectrum shaping (FDSS).
  • FDSS frequency-domain spectrum shaping
  • Discrete Fourier transform spread orthogonal frequency division multiplexing (discrete fourier transform spread orthogonal frequency division multiplexing, DFT-S-OFDM) signal:
  • DFT-S-OFDM waveform In order to improve uplink coverage in new radio (NR) technology, the DFT-S-OFDM waveform is supported. Compared with orthogonal frequency division multiplexing (OFDM) waveforms, DFT-S-OFDM waveforms can effectively reduce signal Peak to average power ratio (PAPR), thereby improving coverage.
  • a process for generating a DFT-S-OFDM signal may include coding, modulation, discrete Fourier transform (DFT), subcarrier mapping, and inverse fast Fourier transformation (IFFT), plus Steps such as cyclic prefix (CP) and digital-to-analog conversion.
  • LDPC low density parity check
  • QPSK quadrature phase shift keying
  • Step 3 Pass M modulation symbols through M-point DFT to obtain the frequency domain signal as ⁇ X(0),X(1),...,X(M-1) ⁇ .
  • Step 4 Map the frequency domain signal to M subcarriers, and perform N-point IFFT to obtain the time domain signal as ⁇ x(0),x(1),...,x(N-1) ⁇ .
  • the value of N is determined by the system bandwidth, and N is greater than M.
  • the frequency domain signal can also be multiplied by the precoding matrix before subcarrier mapping.
  • Step 5 Add a cyclic prefix to the time domain signal and perform digital-to-analog conversion to obtain an analog signal, and send the analog signal through the antenna.
  • Spectrum expansion also known as frequency domain expansion, refers to the cyclic expansion of frequency domain signals.
  • the frequency domain signal occupies M subcarriers, and the frequency domain signal is ⁇ X(0),X(1),...,X(M-1) ⁇ .
  • the frequency domain expanded signal of E elements ⁇ X(M-P),X(M-P+1),...,X(M-1),X(0),X(1),..., X(M-1),X(0),X(1),...,X(E-P-1) ⁇ .
  • the frequency domain extended signal is mapped onto the M+E subcarriers and sent. That is, the signal after frequency domain expansion will occupy more subcarriers.
  • the definition of frequency domain expansion ratio is introduced.
  • ⁇ 1 and ⁇ 2 both represent the frequency domain expansion ratio
  • M represents the number of subcarriers before frequency domain expansion
  • Q represents the number of subcarriers after frequency domain expansion
  • QM represents the number of frequency domain expansion subcarriers.
  • Both formulas (1) and (2) can describe the proportion of the number of frequency domain extended subcarriers, and according to formulas (1) and (2), it can be deduced: the larger ⁇ 1 is, the greater the number of frequency domain extended subcarriers; The larger ⁇ 2 is, the smaller the number of frequency domain extension subcarriers is.
  • the signal before frequency domain expansion is expressed as ⁇ X(0),X(1),X(2),X(3),X(4),X(5),X(6),X(7) ⁇
  • the signal after frequency domain expansion processing is expressed as ⁇ X(6),X(7),X(0),X(1),X(2),X(3),X(4),X( 5),X(6),X(7),X(0),X(1) ⁇ .
  • the frequency domain expanded signal is mapped to 12 subcarriers and transmitted.
  • ⁇ 1 and ⁇ 2 both represent the frequency domain expansion ratio
  • M represents the number of subcarriers before frequency domain expansion
  • Q represents the number of subcarriers after frequency domain expansion
  • QM represents the number of frequency domain expansion subcarriers.
  • Both formulas (3) and (4) can describe the proportion of the number of frequency domain extended subcarriers, and according to formulas (3) and (4), it can be deduced: the larger ⁇ 1 is, the greater the number of frequency domain extended subcarriers; The larger ⁇ 2 is, the smaller the number of frequency domain extension subcarriers is.
  • ⁇ 1 and ⁇ 2 are used as examples for description, but are not limiting.
  • FDSS refers to windowing filtering of frequency domain signals
  • windowing filtering refers to multiplying frequency domain signals and filter coefficients bit by bit.
  • Figure 3 is a schematic diagram of frequency domain spectrum shaping.
  • the frequency domain signal occupies M subcarriers.
  • the frequency domain signal is ⁇ X(0),X(1),...,X(M-1) ⁇
  • the filter coefficient is ⁇ W(0),W(1),...,W(M-1) ⁇
  • the frequency domain signal after window filtering is ⁇ X(0)W(0),X(1)W (1),...,X(M-1)W(M-1) ⁇ .
  • frequency domain extension and FDSS can be used alone or at the same time.
  • the frequency domain signal is usually cyclically expanded first, and then multiplied by the filter coefficient bit by bit. For example, assuming that the frequency domain signal is ⁇ X(0), M-P),X(M-P+1),...,X(M-1),X(0),X(1),...,X(M-1),X(0),X (1),...,X(E-P-1) ⁇ ; then expand the frequency domain signal and filter coefficient ⁇ W(0),W(1),...,W(M+E) ⁇ Multiply bit by bit to obtain the frequency domain signal after frequency domain expansion and windowing filtering, and then map it to the M+E subcarrier and send it.
  • Figure 4 is a schematic diagram of the impact of frequency domain extension and FDSS on the PAPR performance of the signal.
  • Figure 4 shows the PAPR performance comparison of DFT-S-OFDM waveforms using FDSS and/or frequency domain extension and DFT-S-OFDM waveforms without FDSS and frequency domain extension under QPSK modulation.
  • the abscissa is the PAPR performance
  • the ordinate is the complementary cumulative distribution function (CCDF) value. It can be seen from the comparison in Figure 4 that FDSS and frequency domain extension can reduce the PAPR of the signal.
  • CCDF complementary cumulative distribution function
  • FIG. 5 is a schematic diagram of the impact of frequency domain extension and FDSS on the BLER performance of the signal under a time domain filter estimation.
  • Figure 5 shows the BLER performance comparison of the DFT-S-OFDM waveform using FDSS and frequency domain extension under QPSK modulation and the DFT-S-OFDM waveform without using FDSS and frequency domain extension when the channel estimation algorithm is time domain filter estimation. .
  • the spectral efficiency increases, the BLER performance loss of the DFT-S-OFDM waveform using FDSS and frequency domain extension under QPSK modulation is gradually increasing compared with the DFT-S-OFDM waveform without FDSS and frequency domain extension. The loss of BLER performance will reduce the throughput during uplink transmission.
  • Table 1 is a relationship between coding performance loss, code rate, and modulation order, including the code rate before frequency domain expansion, the code rate after frequency domain expansion (for example, the frequency domain expansion ratio is 0.25), and the code rate under QPSK modulation.
  • BLER performance difference BLER performance difference under 16QAM modulation.
  • Table 1 shows that the fixed frequency domain extension ratio is 0.25 (which can also be described as a fixed frequency domain extension ratio of 25%). Under the same total transmit power and the same spectrum efficiency, compare the Gaussian channel after the code rate is increased.
  • the BLER performance difference between the DFT-S-OFDM waveform and the DFT-S-OFDM waveform before the code rate is increased.
  • the initial code rate is R
  • the signal power on each sub-carrier is P
  • the code rate after the code rate is increased is R *(1+ ⁇ 1 )
  • the signal power on each subcarrier is P*(1+ ⁇ 1 ).
  • Table 1 Relationship between coding performance loss, code rate, and modulation order
  • PAPR can also be reduced through reserved subcarrier technology.
  • the reserved subcarrier technology refers to selecting reserved subcarriers (also called peak reduction tones (PRT) subcarriers) in the frequency domain in advance, and placing the frequency domain clipping signal C through the reserved subcarriers.
  • PRT peak reduction tones
  • the frequency domain clipping signal C undergoes inverse discrete Fourier transformation (IDFT) to generate an inverse waveform in the time domain that eliminates the peak value of the original time domain waveform.
  • IDFT inverse discrete Fourier transformation
  • the data signal X and the frequency domain clipping signal C occupy different frequency domain resources, that is, the data signal
  • the value of X is 0 on the reserved subcarrier (that is, The upper value is not 0 (that is, C k ⁇ 0,k ⁇ i 0 ,i 1 ,...,i L-1 ⁇ ).
  • the frequency domain clipping signal generates the time domain clipping signal, Q represents the IDFT matrix.
  • the gradient descent method is used to iteratively generate the time domain clipping signal c.
  • the existing gradient descent method can be used for iteration. The iteration process is not limited in this application.
  • the equipment in this application can be divided into a sending end and a receiving end for encoding and modulating data.
  • the sending end can be a network device or a terminal device
  • the receiving end can be a terminal device or a network device.
  • it can be divided into uplink transmission scenarios (the sender is a terminal device and the receiver is a network device) and downlink transmission scenarios (the sender is a network device and the receiver is a terminal device).
  • uplink transmission scenarios the sender is a terminal device and the receiver is a network device
  • downlink transmission scenarios the sender is a network device and the receiver is a terminal device.
  • Figure 6 is a schematic flow chart of the first communication method provided by this application, including the following steps:
  • the first coding modulation parameter is used for coding modulation processing, and refers to a type of parameters related to coding modulation processing.
  • the first coding modulation parameter may be a modulation and coding scheme (MCS) index, a coding rate, or a modulation order.
  • MCS modulation and coding scheme
  • Table 2 shows a mapping relationship between MCS index and coding rate, modulation order and spectral efficiency.
  • Table 2 Mapping relationship between MCS index and coding rate, modulation order and spectral efficiency
  • the first coding modulation parameter is determined by the network device.
  • the network device may determine the MCS index based on channel quality.
  • the network device determines the MCS index, it can also determine the corresponding coding rate and modulation order.
  • the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier. That is, when the network equipment adopts the frequency domain extension technology, the first subcarrier is the frequency domain extension subcarrier; when the network equipment adopts the reserved subcarrier technology, the first subcarrier is the reserved subcarrier.
  • the value of the number N of the first subcarriers is related to the value of the first coding modulation parameter. For example, as the value of the first coding modulation parameter gradually increases, the number N of first subcarriers gradually decreases.
  • this application introduces a first ratio.
  • the first ratio is the ratio of the number of frequency domain extension subcarriers to the number of subcarriers before frequency domain extension; when the network equipment adopts reserved subcarrier technology, the first ratio is the ratio of the number of reserved subcarriers.
  • ⁇ 1 represents the frequency domain expansion ratio
  • M represents the number of subcarriers before frequency domain expansion
  • Q represents the number of subcarriers after frequency domain expansion.
  • the number of subcarriers, then QM represents the number of frequency domain extension subcarriers;
  • ⁇ 1 represents the subcarrier reservation ratio
  • M represents the number of subcarriers before reservation
  • Q represents the number of subcarriers after reservation.
  • the number of subcarriers, QM represents the number of reserved subcarriers.
  • the value of the first ratio is related to the value of the first coding modulation parameter, including the following situations:
  • Case 1 The first coding modulation parameter belongs to the first coding modulation parameter set
  • ⁇ 1 is greater than ⁇ 2
  • the first ratio corresponding to ⁇ 1 is smaller than the first ratio corresponding to ⁇ 2 .
  • the first ratio ⁇ 1 represents the frequency domain extension ratio or the subcarrier reservation ratio, and is defined as When, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually increases, so the first ratio needs to be reduced. Then, when there are at least two different coded modulation parameters ⁇ 1 and ⁇ 2 in the first coded modulation parameter set, and ⁇ 1 is greater than ⁇ 2 , the first ratio corresponding to ⁇ 1 is smaller than the first ratio corresponding to ⁇ 2 .
  • a ratio can be a fixed value.
  • Case 2 The first coding modulation parameter belongs to the first coding modulation parameter set
  • ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ,
  • the first ratio ⁇ 1 represents the frequency domain extension ratio or the subcarrier reservation ratio, and is defined as When, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually increases, so the first ratio needs to be reduced.
  • case two limits any two different coded modulation parameters ⁇ 1 and ⁇ 2 in the first coded modulation parameter set, It is satisfied that ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 .
  • the first ratio corresponding to ⁇ 3 is smaller than the first ratio corresponding to ⁇ 4 .
  • ⁇ 3 or ⁇ 4 have different values and belong to the same value range, then ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is equal to the first ratio corresponding to ⁇ 4 .
  • the following describes an example of the relationship between the first coding modulation parameter and the first ratio when the first coding modulation parameter is an MCS index, a coding rate, or a modulation order in cases one and two.
  • the first ratio ⁇ 1 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as
  • the first ratio ⁇ 1 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as
  • Table 4 Mapping relationship between the first ratio and coding rate
  • the examples in 1) to 3) above are only examples, and this application is not limiting.
  • the definition of the first ratio can also be expressed as That is to say, the value of the first ratio can also be in the form of a percentage, which is not limited by this application.
  • ⁇ 1 is a negative real number
  • ⁇ 2 is a positive real number
  • the first ratio ⁇ 1 corresponding to the value x of the first coded modulation parameter is the first value.
  • the first value is 0 or a value close to 0.
  • the first ratio ⁇ 1 represents the frequency domain extension ratio or the subcarrier reservation ratio, and is defined as When, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually increases, so the first ratio needs to be reduced. What is different from case one or case two is that although the function mapping relationship is used in case three to describe the relationship between the first coded modulation parameter and the first ratio, the described changing trend of the relationship between the first coded modulation parameter and the first ratio is similar.
  • the following describes an example of the relationship between the first coding modulation parameter and the first ratio when the first coding modulation parameter is an MCS index or a coding rate in case three.
  • the mapping function between the MCS index I MCS and the first ratio ⁇ 1 can be derived as shown in formula (6):
  • the mapping function between the coding rate R and the first ratio ⁇ 1 can be derived as shown in formula (7):
  • this application also provides another relationship between the first encoding modulation parameter and the second ratio ⁇ 2
  • the second ratio is as shown in formula (2), and the second ratio ⁇ 2 can also represent the frequency domain extension ratio or the subcarrier reservation ratio, and is defined as
  • ⁇ 2 represents the frequency domain expansion ratio
  • M represents the number of subcarriers before frequency domain expansion
  • Q represents the number of subcarriers after frequency domain expansion
  • QM represents the number of frequency domain expansion subcarriers
  • ⁇ 2 represents the subcarrier reservation ratio
  • M represents the number of subcarriers before reservation
  • Q represents the number of subcarriers after reservation
  • QM represents the number of reserved subcarriers.
  • the value of the second ratio is related to the value of the first coding modulation parameter, including the following situations:
  • Case 4 The first coding modulation parameter belongs to the first coding modulation parameter set
  • ⁇ 1 is greater than ⁇ 2
  • the second ratio corresponding to ⁇ 1 is greater than the second ratio corresponding to ⁇ 2 .
  • the second ratio ⁇ 2 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually decreases, so the second ratio can be increased. Then, when there are at least two different coded modulation parameters ⁇ 1 and ⁇ 2 in the first coded modulation parameter set, and ⁇ 1 is greater than ⁇ 2 , the second ratio corresponding to ⁇ 1 is greater than the second ratio corresponding to ⁇ 2 .
  • the second ratio corresponding to ⁇ 1 is greater than the second ratio corresponding to ⁇ 2
  • the other coding modulation parameters correspond to the second ratio.
  • the second ratio can be a fixed value.
  • Case 5 The first coding modulation parameter belongs to the first coding modulation parameter set
  • ⁇ 3 is greater than ⁇ 4
  • the second ratio corresponding to ⁇ 3 is less than or equal to the second ratio corresponding to ⁇ 4
  • the second ratio ⁇ 2 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually decreases, so the second ratio can be increased.
  • case two limits any two different coded modulation parameters ⁇ 1 and ⁇ 2 in the first coded modulation parameter set to satisfy that ⁇ 3 is greater than ⁇ 4 , and the second ratio corresponding to ⁇ 3 is greater than or equal to ⁇ 4 corresponds to the second ratio.
  • the second ratio corresponding to ⁇ 3 is greater than the second ratio corresponding to ⁇ 4 .
  • ⁇ 3 or ⁇ 4 have different values and belong to the same value range, then ⁇ 3 is greater than ⁇ 4 , and the second ratio corresponding to ⁇ 3 is equal to the second ratio corresponding to ⁇ 4 .
  • the following describes an example of the relationship between the first coding modulation parameter and the second ratio when the first coding modulation parameter is an MCS index, a coding rate, or a modulation order in cases four and five.
  • Table 7 Mapping relationship between the second ratio and coding rate
  • the examples in 1) to 3) above are only examples, and this application is not limiting.
  • the definition of the second ratio can also be expressed as That is to say, the value of the second ratio can also be in the form of a percentage, which is not limited by this application.
  • ⁇ 3 is a positive real number
  • ⁇ 4 is a positive real number
  • the second ratio ⁇ 2 corresponding to the value x of the first coded modulation parameter is the second value.
  • the second value is 1 or a value close to 1.
  • the second ratio ⁇ 2 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually decreases, so the second ratio can be increased. What is different from case four or case five is that although the function mapping relationship is used in case six to describe the relationship between the first coded modulation parameter and the second ratio, the changing trend of the described relationship between the first coded modulation parameter and the second ratio is similar.
  • the following describes an example of the relationship between the first coding modulation parameter and the second ratio when the first coding modulation parameter is an MCS index or a coding rate in case 6.
  • the number of first subcarriers determined according to the first coding modulation parameter may be an integer or may not be an integer.
  • the number of first subcarriers is an integer.
  • the number N of first subcarriers needs to be rounded to obtain the first rounded number.
  • the number of subcarriers N′ is an integer multiple of a positive integer a, and the positive integer a is 1 or 12.
  • An integer multiple of the number of subcarriers included in (usually 12).
  • the second subcarrier when N is not 0, includes a frequency domain extension subcarrier and a subcarrier before frequency domain extension, or the second subcarrier includes a reserved subcarrier and a pre-reservation subcarrier. That is, when frequency domain extension technology or reserved subcarrier technology is used, the number of second subcarriers is equal to the sum of the number of frequency domain extension subcarriers and the number of subcarriers before frequency domain extension, or, the second subcarrier The number is equal to the sum of the number of reserved subcarriers and the number of subcarriers before reservation.
  • the number of second subcarriers is equal to the number of frequency domain extension subcarriers after rounding and the number of subcarriers before frequency domain extension.
  • the sum of the number of carriers, or the number of second subcarriers is equal to the sum of the rounded number of reserved subcarriers and the number of pre-reserved subcarriers.
  • N when N equals 0, it means that frequency domain extension or subcarrier reservation processing is not performed, and the second subcarrier is the number of subcarriers required for the frequency domain signal.
  • encoding and modulating the data bits to generate the first signal includes the following steps:
  • s11 Determine the coding code rate according to the first ratio corresponding to the first coding modulation parameter or the first ratio corresponding to the rounding process of the number of first subcarriers.
  • the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded
  • the corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation. That is to say, the first ratio used to determine the coding rate may be the first ratio ⁇ 1 as described in cases one to six above, or it may be the corresponding first ratio after rounding the number of first subcarriers.
  • the first ratio used to determine the coding rate can also be the second ratio ⁇ 2 as described in cases one to six above, or the corresponding second ratio after rounding the number of first subcarriers.
  • s13 Modulate the encoded codeword according to the modulation order corresponding to the MCS index to obtain a modulation symbol.
  • the modulation symbol is processed by discrete Fourier transform to obtain the frequency domain signal.
  • s15 perform cyclic expansion or subcarrier reservation processing on the frequency domain signal to obtain the first signal.
  • the specific execution process of the above steps s11-s15 includes:
  • Q m *M code words are obtained as ⁇ b(0),b(1),...,b( Q m *M-1) ⁇
  • the Q m *M code words ⁇ b(0), b(1),..., b(Q m *M-1) ⁇ are modulated with the order Q m Modulation processing, obtain M modulation symbols ⁇ s(0),s(1),...,s(M-1) ⁇ , pass the M modulation symbols through M-point DFT, and obtain the frequency domain signal as ⁇ X (0),X(1),...,X(M-1) ⁇ .
  • the number of first subcarriers N ⁇ 1 *M.
  • P elements are expanded to the left (or called forward) and NP is expanded to the right (or called backward).
  • the frequency domain extended signal is mapped onto M+N subcarriers and sent.
  • the frequency domain clipping signal on the reserved subcarrier is ⁇ C(0),C(1),...,C(N-1) ⁇
  • the frequency domain signal is ⁇ C(0),C( 1),...,C(P-1),X(0),X(1),...,X(M-1),C(P),C(P+1),... ,C(N-1) ⁇ .
  • the frequency domain signal can also be multiplied by the precoding matrix before subcarrier mapping.
  • CP cyclic prefix
  • the encoding code rate may also remain unchanged, that is, the encoding code rate may be the code rate R determined according to Table 2.
  • the subsequent execution processes are similar and will not be repeated here.
  • windowing filtering processing can also be performed on the frequency domain signal.
  • windowing filtering processing can also be performed on the frequency domain signal.
  • the method is not limited in this application.
  • the description of the frequency domain expansion ratio in this section takes ⁇ 1 and ⁇ 2 as an example, but this application is not limited.
  • the frequency domain extension ratio can also be ⁇ 1 and ⁇ 2 , ⁇ 1 and ⁇ 2 also satisfies the mapping relationship shown in Table 3 to Table 8, or as shown in Formula (7) to Formula (10)
  • the functional relationship in please refer to the corresponding description for the specific implementation, and will not be described again here.
  • the communication method performed by the terminal device is:
  • FIG. 7 is a schematic flow chart of the second communication method provided by this application, including the following steps:
  • the terminal device may also determine the number N of first subcarriers according to the first coding modulation parameter.
  • the specific determination method includes, for example, a description of the first subcarrier, a description of the first coding modulation parameter, a description of how to determine the number N of first subcarriers based on the first coding modulation parameter, a description of the first ratio, the second
  • the first coding modulation parameter may be determined by the network device and sent to the terminal device.
  • the network device may determine the MCS index based on the channel quality and send the MCS index to the terminal device.
  • the terminal device when the terminal device determines the MCS index, it can also determine the corresponding coding rate and modulation order.
  • the terminal device may retransmit. For example, when the terminal device makes a decoding error or fails to transmit coded and modulated data, the terminal device needs to retransmit.
  • the MCS index will change during retransmission, causing the first coding modulation parameter to change.
  • the first coding modulation parameter is determined based on the downlink control information (DCI) used to schedule the current transmission.
  • DCI downlink control information
  • the first signal after receiving the first signal, the first signal can be demodulated and decoded, including the following steps:
  • s21 perform decyclic expansion or subcarrier reservation processing on the first signal to obtain a frequency domain signal.
  • s24 determine the coding code rate according to the first ratio corresponding to the first coding modulation parameter or the corresponding first ratio after rounding the number of first subcarriers;
  • the above-mentioned steps s21-s25 are the reverse process of steps s11-s15 described in section 1.
  • the signal after the frequency domain expansion of the elements ⁇ X(MP),X(M-P+1),...,X(M-1),X(0),X(1),...,X( M-1), ,X(M-1) ⁇ .
  • the frequency domain signal ⁇ X(0), ),...,s(M-1) ⁇ .
  • Demodulate M modulation symbols according to the modulation order Q m and obtain Q m *M encoded codewords ⁇ b(0), b(1),..., b(Q m *M-1) ⁇ .
  • Q m *M code words ⁇ b(0) ,b(1),...,b(Q m *M-1) ⁇ is decoded to obtain Q m *R′*M data bits ⁇ a(0),a(1),...,a (Q m *R′*M-1) ⁇ .
  • the methods described in subsections 1 and 2 above can also be implemented if the execution subject is replaced.
  • the terminal device can perform the first communication method as described in Section 1, and the network device can perform the second communication method as described in Section 2. a communication method.
  • FIG. 8 is a schematic flow chart of the third communication method provided by this application, including the following steps:
  • the network device determines the number N of first subcarriers based on the first coding modulation parameter.
  • the network device sends indication information to the terminal device, where the indication information includes the number N of first subcarriers or the first ratio.
  • the relevant description of the first subcarrier the relevant description of the first coding modulation parameter, the description of how to determine the number N of first subcarriers according to the first coding modulation parameter, the correlation of the first ratio, the second ratio, etc.
  • the relevant description of the first subcarrier the relevant description of the first coding modulation parameter
  • the description of how to determine the number N of first subcarriers according to the first coding modulation parameter the correlation of the first ratio, the second ratio, etc.
  • the first coded modulation coefficient also includes spectral efficiency (spectral efficiency is usually determined by the base station and is not involved in the terminal equipment).
  • spectral efficiency is usually determined by the base station and is not involved in the terminal equipment.
  • the first coding modulation parameter is spectral efficiency
  • the relationship between spectral efficiency and the first ratio ⁇ 1 also satisfies the situations one to three described in Section 1 and related examples, or, the relationship between the spectral efficiency and the second ratio ⁇
  • the relationship between 2 also satisfies the situations 4 to 6 described in Section 1 and related examples, which will not be repeated here.
  • the network device determines the number N of first subcarriers, it can indicate the number N of first subcarriers or the first ratio to the terminal device through an indication message. Then the terminal device can directly receive the indication information, and generate and send the first signal according to the indication information (that is, the terminal device does not need to determine the number N of the first subcarriers or the first ratio by itself).
  • the indication information can be obtained by adding a quantization bit field in the DCI. Different values of the information bits in the quantization bit field are used to indicate the number N of different first subcarriers or the number N of the first subcarrier.
  • a ratio ⁇ 1 is a mapping relationship between the first ratio and the quantization bit field provided by this application.
  • Table 9 Mapping relationship between the first ratio value and the quantization bit field
  • the quantization bit field can also indicate different first ratios through more bit values, which is not limited in this application.
  • S303 The network device receives the first signal on the second subcarrier.
  • the network device is a receiving end and can receive the first signal on the second subcarrier.
  • the second subcarrier please refer to the corresponding description in Section 1, which will not be described again here.
  • the network device may perform demodulation and decoding processing on the first signal.
  • demodulation and decoding processing For specific implementation methods, please refer to the description of demodulation and decoding processing on the first signal in Section 2, which will not be described again here.
  • FIG. 9 is a schematic flow chart of the fourth communication method provided by this application, including the following steps:
  • the terminal device receives indication information from the network device, where the indication information includes the number N of first subcarriers or the first ratio.
  • the related description of the first subcarrier, the related description of the first ratio, the second ratio, etc. can refer to the corresponding description in Section 1, and the description of the indication information can refer to the corresponding description in Section 3. No further details will be given here.
  • the terminal device sends the first signal to the network device on the second subcarrier.
  • the terminal device before sending the first signal, performs coding, modulation and other processing on the data bits to generate the first signal.
  • the terminal device before sending the first signal, performs coding, modulation and other processing on the data bits to generate the first signal.
  • coding, modulation and other processing on the data bits to generate the first signal.
  • the device or equipment provided by this application may include a hardware structure and/or a software module to realize the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether one of the above functions is performed as a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.
  • the division of modules in this application is schematic and is only a logical function division. In actual implementation, there may be other division methods.
  • each functional module in various embodiments of the present application can be integrated into a processor, or can exist physically alone, or two or more modules can be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or software function modules.
  • FIG 10 is a schematic diagram of a communication device provided by this application.
  • the communication device may include modules that perform one-to-one correspondence with the methods/operations/steps/actions described in the method embodiments corresponding to Figures 6 to 9.
  • the modules may be hardware circuits, software, or Hardware circuit combined with software implementation.
  • the communication device 1000 includes a communication unit 1001 and a processing unit 1002. It is used to implement the method executed by the terminal device or the network device in the previous embodiment.
  • the processing unit 1002 is configured to determine the number of first subcarriers according to the first coding modulation parameter.
  • the first coding modulation parameter is used for coding modulation processing
  • the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier
  • the value of the number of the first subcarrier is related to the value of the first coding modulation parameter.
  • the communication unit 1001 is configured to send the first signal on the second subcarrier. Among them, when the first When the number of subcarriers is not 0, the second subcarrier includes frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarrier includes the reserved subcarriers and subcarriers before reservation.
  • the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order.
  • MCS index corresponds to a coding rate and a modulation order.
  • the first coding modulation parameter is determined based on downlink control information DCI used to schedule current transmission.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 1 is greater than ⁇ 2
  • the first ratio corresponding to ⁇ 1 is smaller than the first ratio corresponding to ⁇ 2
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ,
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • ⁇ 1 is a negative real number
  • ⁇ 2 is a positive real number
  • the first ratio ⁇ corresponding to the value x of the first coded modulation parameter is the first value.
  • the processing unit 1002 is configured to round the number N of the first subcarriers to obtain the rounded number N′ of the first subcarriers, where N′ is an integer multiple of the positive integer a.
  • the positive integer a is 1 or 12.
  • the processing unit 1002 is configured to perform encoding and modulation processing on the data bits.
  • the process includes the following: determining the coding rate according to the first ratio corresponding to the first coding modulation parameter or the first ratio after rounding the number of first subcarriers; encoding the data bits according to the coding rate to obtain the coding codeword; modulate the coded codeword according to the modulation order corresponding to the MCS index to obtain modulation symbols; subject the modulation symbols to discrete Fourier transform processing to obtain frequency domain signals; perform cyclic expansion or subcarriers on the frequency domain signals Set aside processing to obtain the first signal.
  • the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded
  • the corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  • the communication method implemented by the communication device is designed such that the number of first subcarriers can change with different first coding modulation parameters. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for data transmission, thereby obtaining greater PAPR performance gain, that is, Yes, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
  • the processing unit 1002 is configured to determine the number of first subcarriers according to the first coding modulation parameter.
  • the first coding modulation parameter is used for coding modulation processing
  • the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier
  • the value of the number of the first subcarrier is related to the value of the first coding modulation parameter.
  • the communication unit 1001 is configured to receive the first signal on the second subcarrier.
  • the second subcarriers include frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarriers include reserved subcarriers and subcarriers before reservation.
  • the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order.
  • MCS index corresponds to a coding rate and a modulation order.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 1 is greater than ⁇ 2
  • the first ratio corresponding to ⁇ 1 is smaller than the first ratio corresponding to ⁇ 2
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ,
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • ⁇ 1 is a negative real number
  • ⁇ 2 is a positive real number
  • the first ratio ⁇ corresponding to the value x of the first coded modulation parameter is the first value.
  • the processing unit 1002 is configured to round the number N of the first subcarriers to obtain the rounded number N′ of the first subcarriers, where N′ is an integer multiple of the positive integer a.
  • the positive integer a is 1 or 12.
  • the processing unit 1002 is configured to perform demodulation and decoding processing on the first signal after receiving the first signal.
  • the process includes the following: performing decyclic expansion or subcarrier reservation processing on the first signal to obtain a frequency domain signal; subjecting the frequency domain signal to inverse discrete Fourier transform processing to obtain a modulation symbol; according to the modulation order corresponding to the MCS index.
  • the code rate decodes the encoded codeword to obtain data bits.
  • the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded
  • the corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  • the number of first subcarriers may vary with different first coding modulation parameters. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for data transmission, thereby obtaining greater PAPR performance gain, that is, Yes, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
  • the processing unit 1002 is configured to determine the number of first subcarriers according to the first coded modulation coefficient.
  • the communication unit 1001 is configured to send indication information to the terminal device, where the indication information includes the number N of first subcarriers or the first ratio.
  • the first coding modulation parameter is used for coding modulation processing
  • the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier
  • the value of the number of the first subcarrier is related to the value of the coding modulation coefficient
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • the communication unit 1001 is also configured to receive the first signal from the terminal device on the second subcarrier. Wherein, when the number of the first subcarriers is not 0, the second subcarriers include frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarriers include reserved subcarriers and subcarriers before reservation. carrier.
  • the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order, or spectrum efficiency.
  • MCS index corresponds to a coding rate and a modulation order.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 1 is greater than ⁇ 2
  • the first ratio corresponding to ⁇ 1 is smaller than the first ratio corresponding to ⁇ 2
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ,
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • ⁇ 1 is a negative real number
  • ⁇ 2 is a positive real number
  • the first ratio ⁇ corresponding to the value x of the first coded modulation parameter is the first value.
  • the processing unit 1002 is configured to round the number N of the first subcarriers to obtain the rounded number N′ of the first subcarriers, where N′ is an integer multiple of the positive integer a.
  • the positive integer a is 1 or 12.
  • the indication information also includes a first ratio corresponding to the number of first subcarriers after rounding.
  • the first ratio corresponding to the number of first subcarriers after rounding is the number of frequency domain extension subcarriers after rounding.
  • the ratio to the number of subcarriers before frequency domain expansion; or, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  • the processing unit 1002 is configured to perform demodulation and decoding processing on the received first signal.
  • the process includes the following: performing decyclic expansion or subcarrier reservation processing on the first signal to obtain a frequency domain signal; subjecting the frequency domain signal to inverse discrete Fourier transform processing to obtain a modulation symbol; according to the modulation order corresponding to the MCS index.
  • the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded
  • the corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  • the communication method implemented by the communication device can be applied to an uplink data transmission scenario in which the network device sends instruction information to the terminal device, and the terminal device sends coded and modulated data to the network device according to the instruction information.
  • the network device can directly indicate the frequency domain expansion ratio or subcarrier reservation ratio to the terminal device, which facilitates the terminal device to directly encode and modulate the data bits according to the frequency domain expansion ratio or subcarrier reservation ratio to obtain The first signal.
  • the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for coding and modulation processing, thereby obtaining greater PAPR performance gain, and also That is, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
  • the communication unit 1001 is configured to receive indication information from the network device, where the indication information includes the number of first subcarriers or the first ratio.
  • the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier.
  • the number of the first subcarrier is determined based on the first coded modulation coefficient.
  • the value of the number of the first subcarrier is the same as the value of the coded modulation coefficient.
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of subcarriers before reservation.
  • the communication unit 1001 is also configured to send the first signal to the network device on the second subcarrier.
  • the second subcarrier includes the frequency domain extension subcarrier and the subcarrier before frequency domain extension, or the second subcarrier includes the reserved subcarrier and the predetermined subcarrier. Keep the previous subcarrier.
  • the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order, or spectrum efficiency.
  • MCS index corresponds to a coding rate and a modulation order.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 1 is greater than ⁇ 2
  • the first ratio corresponding to ⁇ 1 is smaller than the first ratio corresponding to ⁇ 2
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • the first coded modulation parameter belongs to the first coded modulation parameter set
  • ⁇ 3 is greater than ⁇ 4 , and the first ratio corresponding to ⁇ 3 is less than or equal to the first ratio corresponding to ⁇ 4 ,
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  • ⁇ 1 is a negative real number
  • ⁇ 2 is a positive real number
  • the first ratio ⁇ corresponding to the value x of the first coded modulation parameter is the first value.
  • the processing unit 1002 is configured to round the number N of the first subcarriers to obtain the rounded number N′ of the first subcarriers, where N′ is an integer multiple of the positive integer a.
  • the positive integer a is 1 or 12.
  • the indication information also includes a first ratio corresponding to the number of first subcarriers after rounding.
  • the first ratio corresponding to the number of first subcarriers after rounding is the number of frequency domain extension subcarriers after rounding.
  • the ratio to the number of subcarriers before frequency domain expansion; or, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  • the processing unit 1002 is configured to round the corresponding first ratio after integer processing according to the first ratio or the number of first subcarriers to determine the encoding code rate; encode the data bits according to the encoding code rate to obtain the encoding codeword; Modulate the coded codeword according to the modulation order corresponding to the MCS index to obtain the modulation symbol; subject the modulation symbol to discrete Fourier transform processing to obtain the frequency domain signal; perform cyclic expansion or subcarrier reservation processing on the frequency domain signal , get the first signal.
  • the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded
  • the corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  • the communication method implemented by the communication device can be applied to an uplink data transmission scenario in which the network device sends instruction information to the terminal device, and the terminal device sends coded and modulated data to the network device according to the instruction information.
  • the terminal device directly receives the indication information to obtain the indicated frequency domain expansion ratio or subcarrier reservation ratio, so that the terminal device directly encodes and modulates the data bits according to the frequency domain expansion ratio or subcarrier reservation ratio.
  • the first signal is obtained through processing.
  • the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for coding and modulation processing, thereby obtaining greater PAPR performance gain, and also That is, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
  • FIG. 10 A device including a plurality of functional units shown in FIG. 10 will be described below.
  • the device described in this application includes multiple functional units shown in Figure 10.
  • Figure 11 is a schematic diagram of a communication device provided by this application, used to implement the communication method in the above method embodiment.
  • the communication device 1100 may also be a chip system. It can be understood that the communication device 1100 may be, for example, a terminal device or a network device.
  • the communication device 1100 includes a communication interface 1101 and a processor 1102.
  • the communication interface 1101 may be, for example, a transceiver, an interface, a bus, a circuit, or a device capable of implementing transceiver functions.
  • the communication interface 1101 is used to communicate with other devices through a transmission medium, so that the device 1100 can communicate with other devices.
  • the processor 1102 is configured to perform processing-related operations.
  • the processor 1102 is configured to determine the number of first subcarriers according to the first coding modulation parameter.
  • the communication interface 1101 is used to send the first signal on the second subcarrier.
  • the first coding modulation parameter is used for coding modulation processing
  • the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier
  • the value of the number of the first subcarrier is related to the value of the first coding modulation parameter; when When the number of first subcarriers is not 0, the second subcarrier includes the frequency domain extension subcarrier and the subcarrier before frequency domain extension, or the second subcarrier includes the reserved subcarrier and the pre-reservation subcarrier. subcarrier.
  • the number of first subcarriers in the communication method implemented by the communication device may vary with different first coding modulation parameters. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for data transmission, thereby obtaining greater PAPR performance gain, that is, Yes, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
  • the processor 1102 is configured to determine the number of first subcarriers according to the first coding modulation parameter.
  • the first coding modulation parameter is used for coding modulation processing
  • the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier
  • the value of the number of the first subcarrier is related to the value of the first coding modulation parameter.
  • the communication interface 1101 is used to receive the first signal on the second subcarrier.
  • the second subcarriers include frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarriers include reserved subcarriers and subcarriers before reservation.
  • the number of first subcarriers in the communication method implemented by the communication device may vary with different first coding modulation parameters. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for data transmission, thereby obtaining greater PAPR performance gain, that is, Yes, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
  • the processor 1102 is configured to determine the number of first subcarriers according to the first coded modulation coefficient.
  • the communication interface 1101 is used to send indication information to the terminal device, where the indication information includes the number N of first subcarriers or the first ratio.
  • the first coding modulation parameter is used for coding modulation processing
  • the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier
  • the value of the number of the first subcarrier is related to the value of the coding modulation coefficient
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion
  • the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers. ratio.
  • the communication interface 1101 is also used to receive the first signal from the terminal device on the second subcarrier. Wherein, when the number of the first subcarriers is not 0, the second subcarriers include frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarriers include reserved subcarriers and subcarriers before reservation. carrier.
  • the communication method implemented by the communication device can be applied to an uplink data transmission scenario in which the network device sends instruction information to the terminal device, and the terminal device sends coded and modulated data to the network device according to the instruction information.
  • the network device can directly indicate the frequency domain expansion ratio or subcarrier reservation ratio to the terminal device, which facilitates the terminal device to directly encode and modulate the data bits according to the frequency domain expansion ratio or subcarrier reservation ratio to obtain The first signal.
  • the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for coding and modulation processing, thereby obtaining greater PAPR performance gain, and also That is, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
  • the communication interface 1101 is configured to receive indication information from the network device, where the indication information includes the number of first subcarriers or the first ratio.
  • the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier.
  • the number of the first subcarrier is determined based on the first coded modulation coefficient.
  • the value of the number of the first subcarrier is the same as the value of the coded modulation coefficient.
  • the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of subcarriers before reservation.
  • the communication interface 1101 is also used to send the first signal to the network device on the second subcarrier.
  • the second subcarrier includes the frequency domain extension subcarrier and the subcarrier before frequency domain extension, or the second subcarrier includes the reserved subcarrier and the predetermined subcarrier. Keep the previous subcarrier.
  • the communication method implemented by the communication device can be applied to an uplink data transmission scenario in which the network device sends instruction information to the terminal device, and the terminal device sends coded and modulated data to the network device according to the instruction information.
  • the terminal device directly receives the indication information to obtain the indicated frequency domain expansion ratio or subcarrier reservation ratio, so that the terminal device directly encodes and modulates the data bits according to the frequency domain expansion ratio or subcarrier reservation ratio.
  • the first signal is obtained through processing.
  • the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for coding and modulation processing, thereby obtaining greater PAPR performance gain, and also That is, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
  • the communication device 1100 may also include at least one memory 1103 for storing program instructions and/or data.
  • the memory is coupled to the processor. Coupling in this application is an indirect coupling or communication connection between devices, units or modules, which may be electrical, mechanical or other forms, and is used for information interaction between devices, units or modules.
  • the processor may operate in conjunction with the memory.
  • the processor may execute program instructions stored in memory.
  • the at least one memory and processor are integrated together.
  • the bus 1104 is represented by a thick line in FIG. 11.
  • the connection methods between other components are only schematically illustrated and are not limiting.
  • the bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in Figure 11, but it does not mean that there is only one bus or one type of bus.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component that can implement or execute the present application.
  • a general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in this application can be directly implemented by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or it may be a volatile memory (volatile memory), such as a random access memory.
  • Get memory random-access memory, RAM.
  • Memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • the memory in this application can also be a circuit or any other device capable of realizing a storage function, used to store program instructions and/or data.
  • This application provides a communication system, which includes a terminal device and a network device in the embodiments corresponding to Figures 6 to 9.
  • This application provides a computer-readable storage medium.
  • the computer-readable storage medium stores programs or instructions.
  • the program or instruction is run on the computer, the computer is caused to perform the communication method in the embodiment corresponding to FIG. 6 to FIG. 9 .
  • the computer program product includes instructions.
  • the instructions When the instructions are run on the computer, the computer is caused to execute the communication method in the embodiment corresponding to Figures 6 to 9.
  • the present application provides a chip or chip system.
  • the chip or chip system includes at least one processor and an interface.
  • the interface and the at least one processor are interconnected through lines.
  • the at least one processor is used to run computer programs or instructions to execute the tasks shown in Figure 6 to Embodiment corresponding to Figure 9 communication methods.
  • the interface in the chip can be an input/output interface, a pin or a circuit, etc.
  • the above-mentioned chip system can be a system on chip (SOC), or a baseband chip, etc., where the baseband chip can include a processor, a channel encoder, a digital signal processor, a modem, an interface module, etc.
  • SOC system on chip
  • baseband chip can include a processor, a channel encoder, a digital signal processor, a modem, an interface module, etc.
  • the chip or chip system described above in this application further includes at least one memory, and instructions are stored in the at least one memory.
  • the memory can be a storage unit inside the chip, such as a register, a cache, etc., or it can be a storage unit of the chip (such as a read-only memory, a random access memory, etc.).
  • the technical solutions provided in this application can be implemented in whole or in part through software, hardware, firmware, or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in this application are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a terminal device, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated.
  • the available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, digital video disc (digital video disc, DVD)), or semiconductor media, etc.
  • the embodiments may refer to each other, for example, the methods and/or terms between the method embodiments may refer to each other, for example, the functions and/or terms between the device embodiments may refer to each other. References may be made to each other, for example functions and/or terms between apparatus embodiments and method embodiments may be referenced to each other.

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Abstract

The present application provides a communication method and apparatus, and a device. In the method, a first coding and modulation parameter can be determined according to a coding and modulation scheme, and the number of frequency-domain extension subcarriers or reserved subcarriers can be adjusted according to the first coding and modulation parameter, thereby optimizing the peak-to-average power ratio (PAPR) performance of a transmitted waveform while ensuring the block error rate (BLER) performance of a system.

Description

一种通信方法、装置及设备A communication method, device and equipment
本申请要求于2022年9月5日提交中国专利局、申请号为202211079976.3，申请名称为“一种通信方法、装置及设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims priority to the Chinese patent application filed with the China Patent Office on September 5, 2022, with application number 202211079976.3 and the application title "A communication method, device and equipment", the entire content of which is incorporated into this application by reference. middle.
技术领域Technical field
本申请涉及通信技术领域，尤其涉及一种通信方法、装置及设备。The present application relates to the field of communication technology, and in particular, to a communication method, device and equipment.
背景技术Background technique
新空口(new radio，NR)技术中为了提高上行覆盖，支持采用离散傅里叶变换扩频的正交频分复用(discrete Fourier transform spread orthogonal frequency division multiplexing，DFT-S-OFDM)波形。相较于正交频分复用(orthogonal frequency division multiplexing，OFDM)波形，DFT-S-OFDM波形可以有效降低信号的峰均比(peak to average power ratio，PAPR)，从而提高覆盖。In order to improve uplink coverage, new radio (NR) technology supports orthogonal frequency division multiplexing (discrete Fourier transform spread orthogonal frequency division multiplexing, DFT-S-OFDM) waveform using discrete Fourier transform spread spectrum. Compared with orthogonal frequency division multiplexing (OFDM) waveforms, DFT-S-OFDM waveforms can effectively reduce the peak to average power ratio (PAPR) of signals, thereby improving coverage.
为了进一步提高覆盖，可以采用频谱扩展(spectral extension)、频域频谱整形(frequency-domain spectral shaping，FDSS)、预留子载波等技术来降低DFT-S-OFDM的PAPR。FDSS/频域扩展/预留子载波技术虽然可以有效降低PAPR，使用FDSS/频域扩展/预留子载波技术的DFT-S-OFDM波形与不使用FDSS/频域扩展/预留子载波技术的DFT-S-OFDM波形相比，为达到与频域扩展前相同的频谱效率，那么频域扩展后需要增大频谱效率(例如，频域扩展后需要提高码率和/或提高调制阶数)，从而导致***的误块率(block error rate，BLER)性能损失在逐渐增大，降低了上行传输过程中的吞吐量。因此，如何在降低PAPR的同时保证***的BLER性能成为待解决的问题。In order to further improve coverage, spectrum extension (spectral extension), frequency-domain spectrum shaping (frequency-domain spectrum shaping, FDSS), reserved subcarriers and other technologies can be used to reduce the PAPR of DFT-S-OFDM. Although FDSS/frequency domain extension/reserved subcarrier technology can effectively reduce PAPR, the DFT-S-OFDM waveform using FDSS/frequency domain extension/reserved subcarrier technology is different from the DFT-S-OFDM waveform that does not use FDSS/frequency domain extension/reserved subcarrier technology. Compared with the DFT-S-OFDM waveform, in order to achieve the same spectral efficiency as before frequency domain expansion, the spectral efficiency needs to be increased after frequency domain expansion (for example, the code rate and/or the modulation order need to be increased after frequency domain expansion ), resulting in the system's block error rate (BLER) performance loss gradually increasing, reducing the throughput during uplink transmission. Therefore, how to ensure the BLER performance of the system while reducing PAPR has become a problem to be solved.
发明内容Contents of the invention
本申请提供一种通信方法、装置及设备，该方法在保证***的BLER性能的前提下能够优化发射波形的PAPR性能。This application provides a communication method, device and equipment, which method can optimize the PAPR performance of the transmitted waveform while ensuring the BLER performance of the system.
第一方面，本申请提供第一种通信方法，该通信方法可以由终端设备或网络设备所执行。其中，以终端设备为执行主体，且终端设备为编码调制数据的发送端为例，终端设备根据第一编码调制参数，确定第一子载波的数量，并且在第二子载波上发送第一信号。其中，第一编码调制参数用于编码调制处理，第一子载波为频域扩展子载波或预留子载波，第一子载波的数量的取值与第一编码调制参数的取值有关；当第一子载波的数量不为0时，第二子载波包括所述频域扩展子载波和频域扩展前的子载波，或者，第二子载波包括所述预留子载波和预留前的子载波。In a first aspect, this application provides a first communication method, which can be executed by a terminal device or a network device. Among them, taking the terminal device as the execution subject and the terminal device as the transmitter of coded modulation data as an example, the terminal device determines the number of first subcarriers according to the first coded modulation parameter, and sends the first signal on the second subcarrier. . Wherein, the first coding modulation parameter is used for coding modulation processing, the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier, and the value of the number of the first subcarrier is related to the value of the first coding modulation parameter; when When the number of first subcarriers is not 0, the second subcarrier includes the frequency domain extension subcarrier and the subcarrier before frequency domain extension, or the second subcarrier includes the reserved subcarrier and the pre-reservation subcarrier. subcarrier.
该方法中，第一子载波的数量可以随第一编码调制参数的不同而变化。例如，当频谱效率较小时，码率提升带来的编码性能损失较小，可采用更多的频域扩展子载波或预留子载波进行数据传输，从而获得更大的PAPR性能增益，也即是，在保证***的BLER性能的前提下优化发射波形的PAPR性能。In this method, the number of first subcarriers may vary with different first coding modulation parameters. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for data transmission, thereby obtaining greater PAPR performance gain, that is, Yes, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
一种可能的实施方式中，第一编码调制参数为调制和编码方案MCS索引，或编码码率，或调制阶数。其中，一个MCS索引对应一个编码码率和一个调制阶数。In a possible implementation, the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order. Among them, an MCS index corresponds to a coding rate and a modulation order.
一种可能的实施方式中，第一编码调制参数是根据用于调度当前传输的下行控制信息DCI确定的。In a possible implementation, the first coding modulation parameter is determined based on downlink control information DCI used to schedule current transmission.
该方法中，当终端设备需要进行重传时，由于重传时第一编码调制参数可能会变化(例如，重传时MCS索引会减小)，则第一编码调制参数是根据用于调度当前传输的DCI确定的，使得终端设备所确定的第一编码调制参数更准确。In this method, when the terminal device needs to retransmit, since the first coding modulation parameter may change during retransmission (for example, the MCS index will decrease during retransmission), the first coding modulation parameter is used to schedule the current The transmitted DCI is determined, making the first coding modulation parameter determined by the terminal device more accurate.
一种可能的实施方式中，第一编码调制参数属于第一编码调制参数集合；In a possible implementation, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值，λ 1 is greater than λ 2 , and the first ratio corresponding to λ 1 is smaller than the first ratio corresponding to λ 2 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
该方法中，随着MCS索引/编码码率/调制阶数的增加，频域扩展或者预留子载波导致BLER性能的损失逐渐增大，因此需要减小第一比值(例如第一比值可以称为频域扩展比例或者子载波预留比例)。并且，该方法中假设第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，例如可以是只存 在两个不同的编码调制参数，满足当λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值，而其他的编码调制参数对应的第一比值可以是一个固定值。In this method, as the MCS index/coding rate/modulation order increases, the loss of BLER performance caused by frequency domain expansion or reserved subcarriers gradually increases, so the first ratio needs to be reduced (for example, the first ratio can be called is the frequency domain expansion ratio or subcarrier reservation ratio). Moreover, this method assumes that there are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set. For example, there may be only In two different coding modulation parameters, when λ 1 is greater than λ 2 , the first ratio corresponding to λ 1 is smaller than the first ratio corresponding to λ 2 , and the first ratio corresponding to other coding modulation parameters may be a fixed value.
一种可能的实施方式中，第一编码调制参数属于第一编码调制参数集合；In a possible implementation, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值，λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
该方法中，限定第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，均满足λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值。例如，当λ3或λ4为不同取值，并且属于不同的取值区间时，若λ3大于λ4，λ3对应的第一比值小于λ4对应的第一比值。又例如，当λ3或λ4为不同取值，并且属于同一个取值区间时，λ3对应的第一比值等于λ4对应的第一比值。In this method, any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set are defined to satisfy the requirement that λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 ratio. For example, when λ 3 or λ 4 have different values and belong to different value intervals, if λ 3 is greater than λ 4 , the first ratio corresponding to λ 3 is smaller than the first ratio corresponding to λ 4 . For another example, when λ 3 or λ 4 have different values and belong to the same value range, the first ratio corresponding to λ 3 is equal to the first ratio corresponding to λ 4 .
一种可能的实施方式中，当第一编码调制参数的取值小于或等于第一阈值时，第一编码调制参数的取值x对应的第一比值α满足：
α＝μ1*x+μ2，In a possible implementation, when the value of the first coded modulation parameter is less than or equal to the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter satisfies:
α=μ 1 *x+μ 2 ,
其中，μ1为负实数，μ2为正实数。Among them, μ 1 is a negative real number, and μ 2 is a positive real number.
一种可能的实施方式中，当第一编码调制参数的取值大于第一阈值时，第一编码调制参数的取值x对应的第一比值α为第一值。In a possible implementation, when the value of the first coded modulation parameter is greater than the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter is the first value.
上述方法中，通过函数关系限定第一编码调制参数的取值x与第一比值α之间的关系。例如，第一编码调制参数的取值x与第一比值α之间为递减函数关系，并且当第一编码调制参数的取值大于第一阈值时，表示频域扩展或者子载波预留导致PAPR性能损失很大，则不再使用频域扩展或者子载波预留技术来降低PAPR(例如将第一比值设置为0)。In the above method, the relationship between the value x of the first coding modulation parameter and the first ratio α is defined through a functional relationship. For example, there is a decreasing functional relationship between the value x of the first coding modulation parameter and the first ratio α, and when the value of the first coding modulation parameter is greater than the first threshold, it means that frequency domain extension or subcarrier reservation causes PAPR If the performance loss is large, frequency domain extension or subcarrier reservation technology is no longer used to reduce PAPR (for example, the first ratio is set to 0).
一种可能的实施方式中，终端设备还可以将第一子载波的数量N进行取整处理，得到取整后的第一子载波数量N′，N′为正整数a的整数倍。In a possible implementation, the terminal device may also round the number N of the first subcarriers to obtain the rounded number N' of the first subcarriers, where N' is an integer multiple of the positive integer a.
一种可能的实施方式中，正整数a为1或12。In a possible implementation, the positive integer a is 1 or 12.
该方法中，若根据第一编码调制参数确定的第一子载波的数量不为整数，则可以对第一子载波的数量进行取整处理，使得第一子载波的数量为资源块的数量或资源块中子载波的数量的整数倍，有利于数据传输。In this method, if the number of first subcarriers determined according to the first coding modulation parameter is not an integer, the number of first subcarriers can be rounded so that the number of first subcarriers is the number of resource blocks or An integer multiple of the number of subcarriers in a resource block is beneficial to data transmission.
一种可能的实施方式中，终端设备对数据比特进行编码调制处理。具体包括以下流程：根据第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率；根据编码码率对数据比特进行编码，获得编码码字；根据MCS索引对应的调制阶数对所述编码码字进行调制，获得调制符号；将调制符号经过离散傅里叶变换处理，获得频域信号；对频域信号进行循环扩展或者子载波预留处理，获得第一信号。其中，第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。In a possible implementation, the terminal device performs encoding and modulation processing on the data bits. Specifically, it includes the following process: determining the coding rate according to the first ratio corresponding to the first coding modulation parameter or the first ratio after rounding the number of first subcarriers; encoding the data bits according to the coding rate to obtain the coding codeword; modulate the coded codeword according to the modulation order corresponding to the MCS index to obtain modulation symbols; subject the modulation symbols to discrete Fourier transform processing to obtain frequency domain signals; perform cyclic expansion or subcarriers on the frequency domain signals Set aside processing to obtain the first signal. Wherein, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded The corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
该方法中，编码码率是根据第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值确定的，则频域扩展或预留子载波技术将影响编码调制过程。In this method, the coding rate is determined based on the first ratio corresponding to the first coding modulation parameter or the first ratio corresponding to the number of first subcarriers after rounding processing, then the frequency domain extension or reserved subcarrier technology will affect Coding modulation process.
需要注意的是，上述第一方面中所述的方法，也可以通过网络设备所执行。在这种情况下，网络设备为编码调制数据的发送端，终端设备为接收端。可选的，当网络设备执行第一方面中所述的方法时，在确定第一编码调制参数时，无需根据用于调度当前传输的下行控制信息DCI确定，网络设备可以直接获取MCS索引，或编码码率，或调制阶数。It should be noted that the method described in the first aspect above can also be executed by a network device. In this case, the network device is the sender of coded and modulated data, and the terminal device is the receiver. Optionally, when the network device performs the method described in the first aspect, when determining the first coding modulation parameter, there is no need to determine it based on the downlink control information DCI used to schedule the current transmission. The network device can directly obtain the MCS index, or Coding code rate, or modulation order.
第二方面，本申请提供第二种通信方法，该通信方法可以由终端设备或网络设备所执行。其中，以网络设备为执行主体，且网络设备为编码调制数据的接收端为例，网络设备根据第一编码调制参数，确定第一子载波的数量，并且在第二子载波上接收第一信号。其中，第一编码调制参数用于编码调制处理，第一子载波为频域扩展子载波或预留子载波，第一子载波的数量的取值与第一编码调制参数的取值有关；当第一子载波的数量不为0时，第二子载波包括频域扩展子载波和频域扩展前的子载波，或者，第二子载波包括预留子载波和预留前的子载波。In a second aspect, this application provides a second communication method, which can be executed by a terminal device or a network device. Among them, taking the network device as the execution subject and the network device as the receiving end of the coded modulation data as an example, the network device determines the number of the first subcarrier according to the first coded modulation parameter, and receives the first signal on the second subcarrier. . Wherein, the first coding modulation parameter is used for coding modulation processing, the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier, and the value of the number of the first subcarrier is related to the value of the first coding modulation parameter; when When the number of the first subcarriers is not 0, the second subcarriers include frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarriers include reserved subcarriers and subcarriers before reservation.
该方法中，第一子载波的数量可以随第一编码调制参数的不同而变化。例如，当频谱效率较小时，码率提升带来的编码性能损失较小，可采用更多的频域扩展子载波或预留子载波进行数据传输，从而获得更 大的PAPR性能增益，也即是，在保证***的BLER性能的前提下优化发射波形的PAPR性能。In this method, the number of first subcarriers may vary with different first coding modulation parameters. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for data transmission, thereby obtaining better performance. Large PAPR performance gain, that is, optimizing the PAPR performance of the transmitted waveform while ensuring the BLER performance of the system.
一种可能的实施方式中，第一编码调制参数为调制和编码方案MCS索引，或编码码率，或调制阶数。其中，一个MCS索引对应一个编码码率和一个调制阶数。In a possible implementation, the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order. Among them, an MCS index corresponds to a coding rate and a modulation order.
一种可能的实施方式中，第一编码调制参数属于第一编码调制参数集合；In a possible implementation, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值，λ 1 is greater than λ 2 , and the first ratio corresponding to λ 1 is smaller than the first ratio corresponding to λ 2 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
该方法中，随着MCS索引/编码码率/调制阶数的增加，频域扩展或者预留子载波导致PAPR性能的损失逐渐增大，因此需要减小第一比值(例如第一比值可以称为频域扩展比例或者子载波预留比例)。并且，该方法中假设第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，例如可以是只存在两个不同的编码调制参数，满足当λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值，而其他的编码调制参数对应的第一比值可以是一个固定值。In this method, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually increases, so the first ratio needs to be reduced (for example, the first ratio can be called is the frequency domain expansion ratio or subcarrier reservation ratio). Moreover, this method assumes that there are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set. For example, there may be only two different coding modulation parameters. When λ 1 is greater than λ 2 , λ The first ratio corresponding to 1 is smaller than the first ratio corresponding to λ 2 , and the first ratio corresponding to other coding modulation parameters may be a fixed value.
一种可能的实施方式中，第一编码调制参数属于第一编码调制参数集合；In a possible implementation, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值，λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
该方法中，限定第一编码调制参数集合中任意两个不同的编码调制参数λ1和λ2，均满足λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值。例如，当λ3或λ4为不同取值，并且属于不同的取值区间时，若λ3大于λ4，则λ3对应的第一比值小于λ4对应的第一比值。又例如，当λ3或λ4为不同取值，并且属于同一个取值区间时，λ3对应的第一比值等于λ4对应的第一比值。In this method, any two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set are defined to satisfy the requirement that λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 ratio. For example, when λ 3 or λ 4 have different values and belong to different value intervals, if λ 3 is greater than λ 4 , then the first ratio corresponding to λ 3 is smaller than the first ratio corresponding to λ 4 . For another example, when λ 3 or λ 4 have different values and belong to the same value range, the first ratio corresponding to λ 3 is equal to the first ratio corresponding to λ 4 .
一种可能的实施方式中，当第一编码调制参数的取值小于或等于第一阈值时，第一编码调制参数的取值x对应的第一比值α满足：
α＝μ1*x+μ2，In a possible implementation, when the value of the first coded modulation parameter is less than or equal to the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter satisfies:
α=μ 1 *x+μ 2 ,
其中，μ1为负实数，μ2为正实数。Among them, μ 1 is a negative real number, and μ 2 is a positive real number.
一种可能的实施方式中，当第一编码调制参数的取值大于第一阈值时，第一编码调制参数的取值x对应的第一比值α为第一值。In a possible implementation, when the value of the first coded modulation parameter is greater than the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter is the first value.
上述方法中，通过函数关系限定第一编码调制参数的取值x与第一比值α之间的关系。例如，第一编码调制参数的取值x与第一比值α之间为递减函数关系，并且当第一编码调制参数的取值大于第一阈值时，表示频域扩展或者子载波预留导致PAPR性能损失很大，则不再使用频域扩展或者子载波预留技术来降低PAPR(例如将第一比值设置为0)。In the above method, the relationship between the value x of the first coding modulation parameter and the first ratio α is defined through a functional relationship. For example, there is a decreasing functional relationship between the value x of the first coding modulation parameter and the first ratio α, and when the value of the first coding modulation parameter is greater than the first threshold, it means that frequency domain extension or subcarrier reservation causes PAPR If the performance loss is large, frequency domain extension or subcarrier reservation technology is no longer used to reduce PAPR (for example, the first ratio is set to 0).
一种可能的实施方式中，网络设备还可以将第一子载波的数量N进行取整处理，得到取整后的第一子载波数量N′，N′为正整数a的整数倍。In a possible implementation, the network device may also round the number N of the first subcarriers to obtain the rounded number N' of the first subcarriers, where N' is an integer multiple of the positive integer a.
一种可能的实施方式中，正整数a为1或12。In a possible implementation, the positive integer a is 1 or 12.
该方法中，若根据第一编码调制参数确定的第一子载波的数量N不为整数，则可以对第一子载波的数量N进行取整处理，使得第一子载波的数量为资源块的数量或资源块中子载波的数量的整数倍，有利于数据传输。In this method, if the number N of the first subcarriers determined according to the first coding modulation parameter is not an integer, the number N of the first subcarriers can be rounded so that the number of the first subcarriers is the number of resource blocks. The number or an integer multiple of the number of subcarriers in the resource block is beneficial to data transmission.
一种可能的实施方式中，网络设备接收第一信号后，对第一信号进行解调译码处理。具体包括以下流程：对第一信号进行去循环扩展或者去子载波预留处理，获得频域信号；将频域信号经过离散傅里叶逆变换处理，获得调制符号；根据MCS索引对应的调制阶数对所述调制信号进行解调，获得编码码字；根据第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率；根据编码码率对所述编码码字进行解码，获得数据比特。其中，第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。In a possible implementation, after receiving the first signal, the network device performs demodulation and decoding processing on the first signal. Specifically, the process includes the following: performing decyclic expansion or subcarrier reservation processing on the first signal to obtain a frequency domain signal; subjecting the frequency domain signal to inverse discrete Fourier transform processing to obtain a modulation symbol; according to the modulation order corresponding to the MCS index. Demodulate the modulated signal several times to obtain the coded codeword; determine the coding code rate according to the first ratio corresponding to the first coding modulation parameter or the corresponding first ratio after the rounding process of the number of first subcarriers; according to the coding The code rate decodes the encoded codeword to obtain data bits. Wherein, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded The corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
该方法中，编码码率是根据第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值确定的，则频域扩展或预留子载波技术将影响解调译码过程。In this method, the coding rate is determined based on the first ratio corresponding to the first coding modulation parameter or the first ratio corresponding to the number of first subcarriers after rounding processing, then the frequency domain extension or reserved subcarrier technology will affect Demodulation and decoding process.
需要注意的是，上述第二方面中所述的方法，也可以通过终端设备所执行。在这种情况下，终端设备 为编码调制数据的接收端，网络设备为发送端。可选的，当终端设备执行第二方面中所述的方法时，终端设备可以根据用于调度当前传输的下行控制信息DCI确定第一编码调制参数。It should be noted that the method described in the second aspect above can also be executed by a terminal device. In this case, the terminal device It is the receiving end of coded and modulated data, and the network device is the sending end. Optionally, when the terminal device performs the method described in the second aspect, the terminal device may determine the first coding modulation parameter according to the downlink control information DCI used to schedule current transmission.
第三方面，本申请提供第三种通信方法，该通信方法可以由网络设备所执行。网络设备根据第一编码调制参数，确定第一子载波的数量，并向终端设备发送指示信息，指示信息包括第一子载波的数量或者第一比值。其中，第一编码调制参数用于编码调制处理，第一子载波为频域扩展子载波或预留子载波，第一子载波的数量的取值与编码调制系数的取值有关，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。网络设备在第二子载波上接收来自终端设备的第一信号。其中，当第一子载波的数量不为0时，第二子载波包括频域扩展子载波和频域扩展前的子载波，或者，第二子载波包括预留子载波和预留前的子载波。In a third aspect, this application provides a third communication method, which can be executed by a network device. The network device determines the number of first subcarriers according to the first coding modulation parameter, and sends indication information to the terminal device, where the indication information includes the number of first subcarriers or the first ratio. Among them, the first coding modulation parameter is used for coding modulation processing, the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier, the value of the number of the first subcarrier is related to the value of the coding modulation coefficient, and the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers. The network device receives the first signal from the terminal device on the second subcarrier. Wherein, when the number of the first subcarriers is not 0, the second subcarriers include frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarriers include reserved subcarriers and subcarriers before reservation. carrier.
该方法可以应用于网络设备向终端设备发送指示信息，终端设备根据指示信息向网络设备发送编码调制数据的上行数据传输场景中。在该传输场景中，网络设备可以直接向终端设备指示频域扩展比例或子载波预留比例，从而有利于终端设备直接根据频域扩展比例或子载波预留比例对数据比特进行编码调制处理得到第一信号。例如，当频谱效率较小时，码率提升带来的编码性能损失较小，可采用更多的频域扩展子载波或预留子载波进行编码调制处理，从而获得更大的PAPR性能增益，也即是，在保证***的BLER性能的前提下优化发射波形的PAPR性能。This method can be applied to an uplink data transmission scenario in which the network device sends instruction information to the terminal device, and the terminal device sends coded and modulated data to the network device according to the instruction information. In this transmission scenario, the network device can directly indicate the frequency domain expansion ratio or subcarrier reservation ratio to the terminal device, which facilitates the terminal device to directly encode and modulate the data bits according to the frequency domain expansion ratio or subcarrier reservation ratio to obtain The first signal. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for coding and modulation processing, thereby obtaining greater PAPR performance gain, and also That is, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
一种可能的实施方式中，第一编码调制参数为调制和编码方案MCS索引，或编码码率，或调制阶数，或频谱效率。其中，一个MCS索引对应一个编码码率和一个调制阶数。In a possible implementation, the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order, or spectral efficiency. Among them, an MCS index corresponds to a coding rate and a modulation order.
一种可能的实施方式中，第一编码调制参数属于第一编码调制参数集合；In a possible implementation, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值，λ 1 is greater than λ 2 , and the first ratio corresponding to λ 1 is smaller than the first ratio corresponding to λ 2 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
该方法中，随着MCS索引/编码码率/调制阶数的增加，频域扩展或者预留子载波导致BLER性能的损失逐渐增大，因此需要减小第一比值(例如第一比值可以称为频域扩展比例或者子载波预留比例)。并且，该方法中假设第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，例如可以是只存在两个不同的编码调制参数，满足当λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值，而其他的编码调制参数对应的第一比值可以是一个固定值。In this method, as the MCS index/coding rate/modulation order increases, the loss of BLER performance caused by frequency domain expansion or reserved subcarriers gradually increases, so the first ratio needs to be reduced (for example, the first ratio can be called is the frequency domain expansion ratio or subcarrier reservation ratio). Moreover, this method assumes that there are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set. For example, there may be only two different coding modulation parameters. When λ 1 is greater than λ 2 , λ The first ratio corresponding to 1 is smaller than the first ratio corresponding to λ 2 , and the first ratio corresponding to other coding modulation parameters may be a fixed value.
一种可能的实施方式中，第一编码调制参数属于第一编码调制参数集合；In a possible implementation, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值，λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
该方法中，限定第一编码调制参数集合中任意两个不同的编码调制参数λ1和λ2，均满足λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值。例如，当λ3或λ4为不同取值，并且属于不同的取值区间时，若λ3大于λ4，λ3对应的第一比值小于λ4对应的第一比值。又例如，当λ3或λ4为不同取值，并且属于同一个取值区间时，λ3对应的第一比值等于λ4对应的第一比值。In this method, any two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set are defined to satisfy the requirement that λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 ratio. For example, when λ 3 or λ 4 have different values and belong to different value intervals, if λ 3 is greater than λ 4 , the first ratio corresponding to λ 3 is smaller than the first ratio corresponding to λ 4 . For another example, when λ 3 or λ 4 have different values and belong to the same value range, the first ratio corresponding to λ 3 is equal to the first ratio corresponding to λ 4 .
一种可能的实施方式中，当第一编码调制参数的取值小于或等于第一阈值时，第一编码调制参数的取值x对应的第一比值α满足：
α＝μ1*x+μ2，In a possible implementation, when the value of the first coded modulation parameter is less than or equal to the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter satisfies:
α=μ 1 *x+μ 2 ,
其中，μ1为负实数，μ2为正实数。Among them, μ 1 is a negative real number, and μ 2 is a positive real number.
一种可能的实施方式中，当第一编码调制参数的取值大于第一阈值时，第一编码调制参数的取值x对应的第一比值α为第一值。In a possible implementation, when the value of the first coded modulation parameter is greater than the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter is the first value.
上述方法中，通过函数关系限定第一编码调制参数的取值x与第一比值α之间的关系。例如，第一编码调制参数的取值x与第一比值α之间为递减函数关系，并且当第一编码调制参数的取值大于第一阈值时，表示频域扩展或者子载波预留导致PAPR性能损失很大，则不再使用频域扩展或者子载波预留技术来降低PAPR(例如将第一比值设置为0)。In the above method, the relationship between the value x of the first coding modulation parameter and the first ratio α is defined through a functional relationship. For example, there is a decreasing functional relationship between the value x of the first coding modulation parameter and the first ratio α, and when the value of the first coding modulation parameter is greater than the first threshold, it means that frequency domain extension or subcarrier reservation causes PAPR If the performance loss is large, frequency domain extension or subcarrier reservation technology is no longer used to reduce PAPR (for example, the first ratio is set to 0).
一种可能的实施方式中，网络设备还可以将第一子载波的数量N进行取整处理，得到取整后的第一子载波数量N′，N′为正整数a的整数倍。 In a possible implementation, the network device may also round the number N of the first subcarriers to obtain the rounded number N' of the first subcarriers, where N' is an integer multiple of the positive integer a.
一种可能的实施方式中，正整数a为1或12。In a possible implementation, the positive integer a is 1 or 12.
该方法中，若根据第一编码调制参数确定的第一子载波的数量不为整数，则可以对第一子载波的数量进行取整处理，使得第一子载波的数量为资源块的数量或资源块中子载波的数量的整数倍，有利于数据传输。In this method, if the number of first subcarriers determined according to the first coding modulation parameter is not an integer, the number of first subcarriers can be rounded so that the number of first subcarriers is the number of resource blocks or An integer multiple of the number of subcarriers in a resource block is beneficial to data transmission.
一种可能的实施方式中，指示信息还包括第一子载波的数量取整处理后对应的第一比值，第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。In a possible implementation, the indication information also includes a first ratio corresponding to the rounded number of the first subcarriers, and the first ratio corresponding to the rounded number of the first subcarriers is the frequency domain after rounding. The ratio of the number of extended subcarriers to the number of subcarriers before frequency domain expansion; or, the first ratio corresponding to the number of first subcarriers after rounding is the number of reserved subcarriers after rounding to the number of subcarriers before reservation Quantity ratio.
该方法中，若对第一子载波的数量进行了取整处理，则取整处理后的频域扩展子载波数量或预留子载波数量的变换将导致频域扩展比例或子载波预留比例变化，也即是，从第一比值变为第一子载波的数量取整处理后对应的第一比值。In this method, if the number of first subcarriers is rounded, the transformation of the number of frequency domain extension subcarriers or the number of reserved subcarriers after rounding will result in a frequency domain extension ratio or a subcarrier reservation ratio. Change, that is, changing from the first ratio to the first ratio corresponding to the rounding process of the number of first subcarriers.
一种可能的实施方式中，网络设备对接收的第一信号进行解调译码处理。具体包括以下流程：对第一信号进行去循环扩展或者去子载波预留处理，获得频域信号；将频域信号经过离散傅里叶逆变换处理，获得调制符号；根据MCS索引对应的调制阶数对调制信号进行解调，获得编码码字；根据第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率；根据编码码率对编码码字进行解码，获得数据比特。其中，第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。In a possible implementation, the network device performs demodulation and decoding processing on the received first signal. Specifically, the process includes the following: performing decyclic expansion or subcarrier reservation processing on the first signal to obtain a frequency domain signal; subjecting the frequency domain signal to inverse discrete Fourier transform processing to obtain a modulation symbol; according to the modulation order corresponding to the MCS index. Demodulate several pairs of modulated signals to obtain coded codewords; determine the coding rate according to the first ratio corresponding to the first coding modulation parameter or the corresponding first ratio after rounding the number of first subcarriers; determine the coding rate according to the coding rate Decode the encoded codeword to obtain data bits. Wherein, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded The corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
该方法中，编码码率是根据第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值确定的，则频域扩展或预留子载波技术将影响解调译码过程。In this method, the coding rate is determined based on the first ratio corresponding to the first coding modulation parameter or the first ratio corresponding to the number of first subcarriers after rounding processing, then the frequency domain extension or reserved subcarrier technology will affect Demodulation and decoding process.
第四方面，本申请提供第四种通信方法，该通信方法可以由终端设备所执行。终端设备接收来自网络设备的指示信息，指示信息包括第一子载波的数量或者第一比值。其中，第一子载波为频域扩展子载波或预留子载波，第一子载波的数量是根据第一编码调制系数确定的，第一子载波的数量的取值与编码调制系数的取值有关，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。终端设备在第二子载波上向网络设备发送第一信号，其中，当第一子载波的数量不为0时，第二子载波包括所述频域扩展子载波和频域扩展前的子载波，或者，第二子载波包括所述预留子载波和预留前的子载波。In a fourth aspect, this application provides a fourth communication method, which can be executed by a terminal device. The terminal device receives indication information from the network device, where the indication information includes the number of first subcarriers or the first ratio. Among them, the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier. The number of the first subcarrier is determined based on the first coded modulation coefficient. The value of the number of the first subcarrier is the same as the value of the coded modulation coefficient. Relevantly, the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of subcarriers before reservation. The terminal device sends the first signal to the network device on the second subcarrier, wherein when the number of the first subcarrier is not 0, the second subcarrier includes the frequency domain extended subcarrier and the subcarrier before frequency domain extension. , or the second subcarrier includes the reserved subcarrier and the subcarrier before reservation.
该方法可以应用于网络设备向终端设备发送指示信息，终端设备根据指示信息向网络设备发送编码调制数据的上行数据传输场景中。在该传输场景中，终端设备直接接收指示信息，从而获得所指示的频域扩展比例或子载波预留比例，使得终端设备直接根据频域扩展比例或子载波预留比例对数据比特进行编码调制处理得到第一信号。例如，当频谱效率较小时，码率提升带来的编码性能损失较小，可采用更多的频域扩展子载波或预留子载波进行编码调制处理，从而获得更大的PAPR性能增益，也即是，在保证***的BLER性能的前提下优化发射波形的PAPR性能。This method can be applied in an uplink data transmission scenario in which the network device sends instruction information to the terminal device, and the terminal device sends coded and modulated data to the network device according to the instruction information. In this transmission scenario, the terminal device directly receives the indication information to obtain the indicated frequency domain extension ratio or subcarrier reservation ratio, so that the terminal device directly encodes and modulates the data bits according to the frequency domain extension ratio or subcarrier reservation ratio. The first signal is obtained through processing. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for coding and modulation processing, thereby obtaining greater PAPR performance gain, and also That is, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
一种可能的实施方式中，第一编码调制参数为调制和编码方案MCS索引，或编码码率，或调制阶数，或频谱效率。其中，一个MCS索引对应一个编码码率和一个调制阶数。In a possible implementation, the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order, or spectrum efficiency. Among them, an MCS index corresponds to a coding rate and a modulation order.
一种可能的实施方式中，第一编码调制参数属于第一编码调制参数集合；In a possible implementation, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值，λ 1 is greater than λ 2 , and the first ratio corresponding to λ 1 is smaller than the first ratio corresponding to λ 2 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
该方法中，随着MCS索引/编码码率/调制阶数的增加，频域扩展或者预留子载波导致PAPR性能的损失逐渐增大，因此需要减小第一比值(例如第一比值可以称为频域扩展比例或者子载波预留比例)。并且，该方法中假设第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，例如可以是只存在两个不同的编码调制参数，满足当λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值，而其他的编码调制参数对应的第一比值可以是一个固定值。In this method, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually increases, so the first ratio needs to be reduced (for example, the first ratio can be called is the frequency domain expansion ratio or subcarrier reservation ratio). Moreover, this method assumes that there are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set. For example, there may be only two different coding modulation parameters. When λ 1 is greater than λ 2 , λ The first ratio corresponding to 1 is smaller than the first ratio corresponding to λ 2 , and the first ratio corresponding to other coding modulation parameters may be a fixed value.
一种可能的实施方式中，第一编码调制参数属于第一编码调制参数集合；In a possible implementation, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值， λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
该方法中，限定第一编码调制参数集合中任意两个不同的编码调制参数λ1和λ2，均满足λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值。例如，当λ3或λ4为不同取值，并且属于不同的取值区间时，若λ3大于λ4，则λ3对应的第一比值小于λ4对应的第一比值。又例如，当λ3或λ4为不同取值，并且属于同一个取值区间时，λ3对应的第一比值等于λ4对应的第一比值。In this method, any two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set are defined to satisfy the requirement that λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 ratio. For example, when λ 3 or λ 4 have different values and belong to different value intervals, if λ 3 is greater than λ 4 , then the first ratio corresponding to λ 3 is smaller than the first ratio corresponding to λ 4 . For another example, when λ 3 or λ 4 have different values and belong to the same value range, the first ratio corresponding to λ 3 is equal to the first ratio corresponding to λ 4 .
一种可能的实施方式中，当第一编码调制参数的取值小于或等于第一阈值时，第一编码调制参数的取值x对应的第一比值α满足：
α＝μ1*x+μ2，In a possible implementation, when the value of the first coded modulation parameter is less than or equal to the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter satisfies:
α=μ 1 *x+μ 2 ,
其中，μ1为负实数，μ2为正实数。Among them, μ 1 is a negative real number, and μ 2 is a positive real number.
一种可能的实施方式中，当第一编码调制参数的取值大于第一阈值时，第一编码调制参数的取值x对应的第一比值α为第一值。In a possible implementation, when the value of the first coded modulation parameter is greater than the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter is the first value.
上述方法中，通过函数关系限定第一编码调制参数的取值x与第一比值α之间的关系。例如，第一编码调制参数的取值x与第一比值α之间为递减函数关系，并且当第一编码调制参数的取值大于第一阈值时，表示频域扩展或者子载波预留导致PAPR性能损失很大，则不再使用频域扩展或者子载波预留技术来降低PAPR(例如将第一比值设置为0)。In the above method, the relationship between the value x of the first coding modulation parameter and the first ratio α is defined through a functional relationship. For example, there is a decreasing functional relationship between the value x of the first coding modulation parameter and the first ratio α, and when the value of the first coding modulation parameter is greater than the first threshold, it means that frequency domain extension or subcarrier reservation causes PAPR If the performance loss is large, frequency domain extension or subcarrier reservation technology is no longer used to reduce PAPR (for example, the first ratio is set to 0).
一种可能的实施方式中，网络设备还可以将第一子载波的数量N进行取整处理，得到取整后的第一子载波数量N′，N′为正整数a的整数倍。In a possible implementation, the network device may also round the number N of the first subcarriers to obtain the rounded number N' of the first subcarriers, where N' is an integer multiple of the positive integer a.
一种可能的实施方式中，正整数a为1或12。In a possible implementation, the positive integer a is 1 or 12.
该方法中，若根据第一编码调制参数确定的第一子载波的数量N不为整数，则可以对第一子载波的数量N进行取整处理，使得第一子载波的数量为资源块的数量或资源块中子载波的数量的整数倍，有利于数据传输。In this method, if the number N of first subcarriers determined according to the first coding modulation parameter is not an integer, then the number N of first subcarriers can be rounded so that the number of first subcarriers is equal to the number of resource blocks. The number or an integer multiple of the number of subcarriers in the resource block is beneficial to data transmission.
一种可能的实施方式中，指示信息还包括第一子载波的数量取整处理后对应的第一比值，第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。In a possible implementation, the indication information also includes a first ratio corresponding to the rounded number of the first subcarriers, and the first ratio corresponding to the rounded number of the first subcarriers is the frequency domain after rounding. The ratio of the number of extended subcarriers to the number of subcarriers before frequency domain expansion; or, the first ratio corresponding to the number of first subcarriers after rounding is the number of reserved subcarriers after rounding to the number of subcarriers before reservation Quantity ratio.
该方法中，若对第一子载波的数量进行了取整处理，则取整处理后的频域扩展子载波数量或预留子载波数量的变换将导致频域扩展比例或子载波预留比例变化，也即是，从第一比值变为第一子载波的数量取整处理后对应的第一比值。In this method, if the number of first subcarriers is rounded, the transformation of the number of frequency domain extension subcarriers or the number of reserved subcarriers after rounding will result in a frequency domain extension ratio or a subcarrier reservation ratio. Change, that is, changing from the first ratio to the first ratio corresponding to the rounding process of the number of first subcarriers.
一种可能的实施方式中，终端设备根据第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率；根据编码码率对数据比特进行编码，获得编码码字；根据MCS索引对应的调制阶数对编码码字进行调制，获得调制符号；将所述调制符号经过离散傅里叶变换处理，获得频域信号；对频域信号进行循环扩展或者子载波预留处理，获得第一信号。其中，第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。In a possible implementation, the terminal device determines the encoding code rate based on the first ratio or the corresponding first ratio after rounding the number of first subcarriers; encodes the data bits according to the encoding code rate to obtain the encoded codeword ; Modulate the coded codeword according to the modulation order corresponding to the MCS index to obtain the modulation symbol; subject the modulation symbol to discrete Fourier transform processing to obtain the frequency domain signal; perform cyclic expansion or subcarrier reservation on the frequency domain signal Process and obtain the first signal. Wherein, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded The corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
该方法中，编码码率是根据第一比值或者第一子载波的数量取整处理后对应的第一比值确定的，则频域扩展或预留子载波技术将影响编码调制过程。In this method, the coding rate is determined based on the first ratio or the corresponding first ratio after rounding off the number of first subcarriers. Then frequency domain extension or reserved subcarrier technology will affect the coding modulation process.
第五方面，本申请提供一种通信装置，该通信装置可以是网络设备，也可以是网络设备中的装置，或者是能够和网络设备匹配使用的装置。一种设计中，该通信装置可以包括执行如第一方面至第三方面，和第一方面至第三方面中任一种可能的实施方式中描述的方法/操作/步骤/动作所一一对应的模块，该模块可以是硬件电路，也可以是软件，也可以是硬件电路结合软件实现。一种设计中，该通信装置可以包括处理单元和通信单元。In a fifth aspect, this application provides a communication device. The communication device may be a network device, a device in a network device, or a device that can be used in conjunction with a network device. In one design, the communication device may include performing one-to-one correspondence with the methods/operations/steps/actions described in any one of the first to third aspects, and any possible implementation manner of the first to third aspects. The module can be a hardware circuit, a software, or a hardware circuit combined with software. In one design, the communication device may include a processing unit and a communication unit.
其中，对网络设备执行的方法的具体描述可以参考上述第一方面至第三方面，和第一方面至第三方面中任一种可能的实施方式中对应的描述，此处不再赘述。可以理解的是，该通信装置也可以实现如第一方面至第三方面中可以实现的效果。For a specific description of the method performed by the network device, reference may be made to the corresponding description in the above first to third aspects and any possible implementation manner of the first to third aspects, and will not be described again here. It can be understood that the communication device can also achieve the effects that can be achieved in the first to third aspects.
第六方面，本申请提供一种通信装置，该通信装置可以是终端设备，也可以是终端设备中的装置，或者是能够和终端设备匹配使用的装置。一种设计中，该通信装置可以包括执行如第一方面、第二方面和第四方面，以及第一方面、第二方面和第四方面中任一种可能的实施方式中描述的方法/操作/步骤/动作所一一对应的模块，该模块可以是硬件电路，也可以是软件，也可以是硬件电路结合软件实现。一种设计中， 该通信装置可以包括处理单元和通信单元。In a sixth aspect, the present application provides a communication device. The communication device may be a terminal device, a device in the terminal device, or a device that can be used in conjunction with the terminal device. In one design, the communication device may include performing the method/operation described in any one of the first aspect, the second aspect, and the fourth aspect, and any possible implementation manner of the first aspect, the second aspect, and the fourth aspect. /The module corresponding to the steps/actions one-to-one. The module can be a hardware circuit, a software, or a hardware circuit combined with software. In one design, The communication device may include a processing unit and a communication unit.
其中，对终端设备执行的方法/操作/步骤/动作的具体描述可以参考上述第一方面、第二方面和第四方面，以及第一方面、第二方面和第四方面中任一种可能的实施方式中对应的描述，此处不再赘述。可以理解的是，该通信装置也可以实现如第一方面、第二方面和第四方面中可以实现的效果。For a specific description of the method/operation/step/action performed by the terminal device, reference may be made to the above-mentioned first aspect, second aspect, and fourth aspect, as well as any possible method in the first aspect, second aspect, and fourth aspect. The corresponding descriptions in the implementation will not be repeated here. It can be understood that the communication device can also achieve the effects that can be achieved in the first aspect, the second aspect and the fourth aspect.
第七方面，本申请提供一种通信装置，该通信装置由输入输出接口和逻辑电路组成，所述输入输出接口用于输入或输出数据；所述逻辑电路按照如第一方面到第三方面，和第一方面至第三方面中任一种可能的实施方式中的方法对数据进行处理，获取处理后的数据。In a seventh aspect, the present application provides a communication device. The communication device is composed of an input-output interface and a logic circuit. The input-output interface is used to input or output data; the logic circuit is as follows from the first aspect to the third aspect, Process the data with the method in any possible implementation of the first aspect to the third aspect, and obtain the processed data.
第八方面，本申请提供一种通信装置，该通信装置由输入输出接口和逻辑电路组成，所述输入输出接口用于输入或输出数据；所述逻辑电路按照如第一方面、第二方面和第四方面任一种可能的实施方式中的方法对数据进行处理，获取处理后的数据。In an eighth aspect, the present application provides a communication device. The communication device is composed of an input-output interface and a logic circuit. The input-output interface is used to input or output data; the logic circuit is as described in the first aspect, the second aspect and The method in any possible implementation of the fourth aspect processes data and obtains processed data.
第九方面，本申请提供一种网络设备，包括：处理器，该处理器与存储器耦合，该存储器用于存储指令，当指令被处理器执行时，使得该网络设备实现上述第一方面至第三方面，或第一方面至第三方面任一种可能的实施方式中的方法。In a ninth aspect, the present application provides a network device, including: a processor, the processor is coupled to a memory, and the memory is used to store instructions. When the instructions are executed by the processor, the network device implements the above-mentioned first aspect to the third aspect. Three aspects, or the method in any possible implementation of the first to third aspects.
第十方面，本申请提供一种终端设备，包括：处理器，该处理器与存储器耦合，该存储器用于存储指令，当指令被处理器执行时，使得该终端设备实现上述第一方面、第二方面和第四方面，或第一方面、第二方面和第四方面任一种可能的实施方式中的方法。In a tenth aspect, the present application provides a terminal device, including: a processor, the processor is coupled to a memory, and the memory is used to store instructions. When the instructions are executed by the processor, the terminal device implements the above-mentioned first aspect and the third aspect. The second aspect and the fourth aspect, or the method in any possible implementation of the first aspect, the second aspect and the fourth aspect.
第十一方面，本申请提供一种通信***，该通信***包括发送端和接收端。其中，发送端用于实现上述第一方面和第四方面，以及第一方面和第四方面任一种可能的实施方式中的方法中的功能。接收端用于实现上述第二方面和第三方面，以及第二方面和第三方面任一种可能的实施方式中的方法中的功能。可选的，该通信***可以包括如第五方面和第六方面中描述的通信装置，或者可以包括如第七方面和第八方面中描述的通信装置，或者可以包括如第九方面和第十方面中描述的设备。In an eleventh aspect, the present application provides a communication system, which includes a sending end and a receiving end. Wherein, the sending end is used to implement the functions of the method in the above-mentioned first aspect and fourth aspect, as well as any possible implementation manner of the first aspect and the fourth aspect. The receiving end is configured to implement the functions of the method in the above second aspect and third aspect, as well as any possible implementation manner of the second aspect and third aspect. Optionally, the communication system may include the communication device as described in the fifth and sixth aspects, or may include the communication device as described in the seventh and eighth aspects, or may include the communication device as described in the ninth and tenth aspects. The device described in the aspect.
第十二方面，本申请中还提供一种计算机可读存储介质，所述计算机可读存储介质上存储指令，当所述指令在计算机上运行时，使得计算机执行第一方面至第四方面，和第一方面至第四方面任一种可能的实施方式中的方法。In a twelfth aspect, this application also provides a computer-readable storage medium, the computer-readable storage medium stores instructions, and when the instructions are run on a computer, the computer executes the first to fourth aspects, and the method in any possible implementation manner of the first to fourth aspects.
第十三方面，本申请提供了一种芯片***，该芯片***包括处理器，还可以包括存储器，用于实现上述第一方面至第四方面，和第一方面至第四方面任一种可能的实施方式中的方法中的功能。该芯片***可以由芯片构成，也可以包含芯片和其他分立器件。In a thirteenth aspect, the present application provides a chip system. The chip system includes a processor and may also include a memory, for implementing the above first to fourth aspects, and any possibility of the first to fourth aspects. function in the method of the implementation. The chip system can be composed of chips or include chips and other discrete devices.
第十四方面，本申请中还提供一种计算机程序产品，包括指令，当所述指令在计算机上运行时，使得计算机执行第一方面至第四方面，和第一方面至第四方面任一种可能的实施方式中的方法。In a fourteenth aspect, this application also provides a computer program product, including instructions, which when the instructions are run on a computer, cause the computer to execute any one of the first aspect to the fourth aspect, and the first aspect to the fourth aspect. possible implementation methods.
附图说明Description of the drawings
图1为本申请提供的通信***的示意图；Figure 1 is a schematic diagram of the communication system provided by this application;
图2为一种频域扩展的示意图；Figure 2 is a schematic diagram of frequency domain expansion;
图3为一种频域频谱整形的示意图；Figure 3 is a schematic diagram of a frequency domain spectrum shaping;
图4为一种频域扩展和FDSS对信号的PAPR性能的影响的示意图；Figure 4 is a schematic diagram of the impact of frequency domain extension and FDSS on the PAPR performance of the signal;
图5为一种时域滤波估计下频域扩展和FDSS对信号的BLER性能的影响的示意图；Figure 5 is a schematic diagram of the impact of frequency domain extension and FDSS on the BLER performance of the signal under a time domain filter estimation;
图6为本申请提供的第一种通信方法的流程示意图；Figure 6 is a schematic flow chart of the first communication method provided by this application;
图7为本申请提供的第二种通信方法的流程示意图；Figure 7 is a schematic flow chart of the second communication method provided by this application;
图8为本申请提供的第三种通信方法的流程示意图；Figure 8 is a schematic flow chart of the third communication method provided by this application;
图9为本申请提供的第四种通信方法的流程示意图；Figure 9 is a schematic flow chart of the fourth communication method provided by this application;
图10为本申请提供的一种通信装置的示意图；Figure 10 is a schematic diagram of a communication device provided by this application;
图11为本申请提供的一种通信设备的示意图。Figure 11 is a schematic diagram of a communication device provided by this application.
具体实施方式Detailed ways
在本申请中，“/”可以表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B；“和/或”可以用于描述关联对象存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A，B可以是单数或者复数。为了便于描述本申请的技术方案，在本申请中，可以采用“第一”、“第二”等字样对功能相同或相似的技术特征进行区分。该“第一”、“第二”等字样并不对数 量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。在本申请中，“示例性的”或者“例如”等词用于表示例子、例证或说明，被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念，便于理解。In this application, "/" can mean that the related objects are in an "or" relationship. For example, A/B can mean A or B; "and/or" can be used to describe the existence of three relationships between related objects. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. In order to facilitate the description of the technical solution of this application, in this application, words such as "first" and "second" may be used to distinguish technical features with the same or similar functions. The words "first" and "second" are not logarithmic. The quantity and execution order are limited, and the words "first", "second" and so on are not necessarily different. In this application, the words "exemplary" or "such as" are used to mean examples, illustrations, or illustrations, and any embodiment or design described as "exemplary" or "such as" should not be construed as Other embodiments or designs are more preferred or advantageous. The use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner that is easier to understand.
下面将结合本申请中的附图，对本申请中的技术方案进行描述。The technical solution in this application will be described below in conjunction with the drawings in this application.
为了解决频谱扩展(spectral extension)导致***的误块率(block error rate，BLER)性能损失增大，降低了上行传输过程中的吞吐量的问题，本申请提供了一种通信方法，该通信方法可以根据编码和调制方案对频域扩展子载波数量或者预留子载波数量进行调整，在保证***的BLER性能的前提下使得发射波形的PAPR性能较高。In order to solve the problem that spectrum extension causes an increase in system block error rate (BLER) performance loss and reduces the throughput during uplink transmission, this application provides a communication method. The number of frequency domain extension subcarriers or the number of reserved subcarriers can be adjusted according to the coding and modulation scheme, making the PAPR performance of the transmitted waveform higher while ensuring the BLER performance of the system.
一、本申请涉及的相关概念：1. Relevant concepts involved in this application:
1、通信***：1. Communication system:
其中，本申请提供的通信方法可以应用于通信***中。例如，图1为本申请提供的一种通信***的示意图，该通信***包括终端设备和网络设备，网络设备可以向终端设备提供通信服务。Among them, the communication method provided by this application can be applied to a communication system. For example, FIG. 1 is a schematic diagram of a communication system provided by this application. The communication system includes a terminal device and a network device. The network device can provide communication services to the terminal device.
本申请提及的通信***包括但不限于：窄带物联网***(narrow band-Internet of things，NB-IoT)、全球移动通信***(global system for mobile communications，GSM)、增强型数据速率GSM演进***(enhanced data rate for GSM evolution，EDGE)、宽带码分多址***(wideband code division multiple access，WCDMA)、码分多址2000***(code division multiple access，CDMA2000)、时分同步码分多址***(time division-synchronization code division multiple access，TD-SCDMA)，长期演进***(long term evolution，LTE)以及5G移动通信***的三大应用场景增强移动宽带(enhanced mobility broad band，eMBB)，超高可靠与低时延通信(ultra-reliable and low latency communications，URLLC)和增强型机器类通信(enhanced machine-type communication，eMTC)以及未来的通信***(例如6G/7G等)。The communication systems mentioned in this application include but are not limited to: narrowband-Internet of things (NB-IoT), global system for mobile communications (GSM), enhanced data rate GSM evolution system (enhanced data rate for GSM evolution, EDGE), wideband code division multiple access system (wideband code division multiple access, WCDMA), code division multiple access 2000 system (code division multiple access, CDMA2000), time division synchronous code division multiple access system ( The three major application scenarios of time division-synchronization code division multiple access (TD-SCDMA), long term evolution system (long term evolution, LTE) and 5G mobile communication system are enhanced mobile broadband (enhanced mobility broadband, eMBB), ultra-high reliability and Ultra-reliable and low latency communications (URLLC) and enhanced machine-type communication (eMTC) as well as future communication systems (such as 6G/7G, etc.).
其中，网络设备可以是能和终端设备进行通信的设备。网络设备可以是基站、中继站或接入点。其中，基站可以是全球移动通信(global system for mobile communication，GSM)***或码分多址(code division multiple access，CDMA)网络中的基站收发台(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)***中的3G基站NodeB，还可以是长期演进(long term evolution，LTE)***中的evolutional NodeB(简称为eNB或eNodeB)。网络设备还可以是卫星通信***中的卫星。网络设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器。网络设备还可以是5G网络中的网络设备或者未来演进的共用陆地移动网(public land mobile network，PLMN)网络中的网络设备(例如gNodeB)。网络设备还可以是可穿戴设备、无人机，或者车联网中的设备(例如车联万物设备(vehicle to everything，V2X))，或者设备间(device to device，D2D)通信中的通信设备，或者应用于未来的通信***中的网络设备。The network device may be a device that can communicate with the terminal device. Network devices can be base stations, relay stations, or access points. Among them, the base station can be a base transceiver station (BTS) in the global system for mobile communication (GSM) system or code division multiple access (CDMA) network, or it can be a broadband code The 3G base station NodeB in the wideband code division multiple access (WCDMA) system can also be the evolutionary NodeB (referred to as eNB or eNodeB) in the long term evolution (long term evolution, LTE) system. The network device may also be a satellite in a satellite communications system. The network device can also be a wireless controller in a cloud radio access network (CRAN) scenario. The network device may also be a network device in a 5G network or a network device in a future evolved public land mobile network (public land mobile network, PLMN) network (such as gNodeB). Network devices can also be wearable devices, drones, or devices in the Internet of Vehicles (such as vehicle to everything (V2X)), or communication devices in device-to-device (D2D) communication. Or network equipment used in future communication systems.
其中，终端设备可以是用户设备(user equipment，UE)、接入终端、终端单元、终端站、移动站、移动台、远方站、远程终端、移动设备、终端、无线通信设备、终端代理或终端装置等。接入终端可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、可穿戴设备、无人机、V2X设备、D2D设备，5G网络中的终端设备、未来演进的PLMN网络中的终端设备或未来的通信***中的终端设备等。Among them, the terminal device can be a user equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a terminal, a wireless communication device, a terminal agent or a terminal. Devices etc. The access terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a device with wireless communications Functional handheld devices, computing devices or other processing devices connected to wireless modems, wearable devices, drones, V2X devices, D2D devices, terminal devices in 5G networks, terminal devices in future evolved PLMN networks or in the future Terminal equipment in communication systems, etc.
2、峰值平均功率比(peak-to-average power ratio，PAPR)：2. Peak-to-average power ratio (PAPR):
PAPR定义为信号的峰值功率与平均功率的比值。由于功率放大器的动态范围是有限的，PAPR过高会导致功率放大进入非线性区，从而导致信号产生非线性失真，造成频谱扩展和带内信号畸变，降低***性能。为了避免信号进入非线性区，需要执行功率回退的操作。其中，PAPR越高，需要回退的功率也就越高，但是，功率回退会导致覆盖性能下降，因此降低PAPR有利于提高覆盖性能。其中，可以通过频谱扩展(spectral extension)和频域频谱整形(frequency-domain spectral shaping，FDSS)的方式来降低DFT-S-OFDM信号的PAPR。PAPR is defined as the ratio of the peak power to the average power of the signal. Since the dynamic range of the power amplifier is limited, too high PAPR will cause the power amplification to enter the nonlinear region, causing nonlinear distortion of the signal, causing spectrum expansion and in-band signal distortion, and reducing system performance. In order to prevent the signal from entering the nonlinear region, power backoff operation needs to be performed. Among them, the higher the PAPR, the higher the power required to be rolled back. However, power rollback will lead to a decrease in coverage performance, so reducing PAPR is conducive to improving coverage performance. Among them, the PAPR of the DFT-S-OFDM signal can be reduced through spectrum extension (spectral extension) and frequency-domain spectrum shaping (FDSS).
3、离散傅里叶变换扩频的正交频分复用(discrete fourier transform spread orthogonal frequency division multiplexing，DFT-S-OFDM)信号：3. Discrete Fourier transform spread orthogonal frequency division multiplexing (discrete fourier transform spread orthogonal frequency division multiplexing, DFT-S-OFDM) signal:
新空口(new radio，NR)技术中为了提高上行覆盖，支持采用DFT-S-OFDM波形。相较于正交频分复用(orthogonal frequency division multiplexing，OFDM)波形，DFT-S-OFDM波形可以有效降低信号的 峰均比(peak to average power ratio，PAPR)，从而提高覆盖。例如，一种生成DFT-S-OFDM信号的流程可以包括编码、调制、离散傅里叶变换(discrete Fourier transform，DFT)、子载波映射和快速傅立叶反变换(inverse fast Fourier transformation，IFFT)、加循环前缀(cyclic prefix，CP)和数模转换等步骤。以采用低密度奇偶校验(low density parity check，LDPC)编码方式，四相相移键控(quadrature phase shift keying，QPSK)调制方式，子载波个数为M为例，对生成DFT-S-OFDM信号的流程进行描述：In order to improve uplink coverage in new radio (NR) technology, the DFT-S-OFDM waveform is supported. Compared with orthogonal frequency division multiplexing (OFDM) waveforms, DFT-S-OFDM waveforms can effectively reduce signal Peak to average power ratio (PAPR), thereby improving coverage. For example, a process for generating a DFT-S-OFDM signal may include coding, modulation, discrete Fourier transform (DFT), subcarrier mapping, and inverse fast Fourier transformation (IFFT), plus Steps such as cyclic prefix (CP) and digital-to-analog conversion. Taking the low density parity check (LDPC) encoding method, the quadrature phase shift keying (QPSK) modulation method, and the number of subcarriers as M as an example, the DFT-S- The process of OFDM signal is described:
step1：将K个数据比特{a(0),a(1),...,a(K-1)}经过LDPC编码处理，获得2M个编码码字为{b(0),b(1),...,b(2M-1)}，其中编码码率为R＝K/2M。step1: Pass K data bits {a(0),a(1),...,a(K-1)} through LDPC encoding, and obtain 2M encoded codewords as {b(0),b(1) ),...,b(2M-1)}, where the coding rate is R=K/2M.
step 2：将2M个编码码字{b(0),b(1),...,b(2M-1)}经过QPSK调制处理，获得M个调制符号{s(0),s(1),...,s(M-1)}，其中调制阶数为Qm＝2。Step 2: Subject 2M code words {b(0), b(1),..., b(2M-1)} to QPSK modulation to obtain M modulation symbols {s(0), s(1) ),...,s(M-1)}, where the modulation order is Q m =2.
step 3：将M个调制符号经过M点的DFT，获得频域信号为{X(0),X(1),...,X(M-1)}。Step 3: Pass M modulation symbols through M-point DFT to obtain the frequency domain signal as {X(0),X(1),...,X(M-1)}.
step 4：将频域信号映射到M个子载波上，并进行N点的IFFT，获得时域信号为{x(0),x(1),...,x(N-1)}。其中，N的取值由***带宽决定，且N大于M。可选的，当存在发射多天线时，频域信号还可以乘以预编码矩阵后再进行子载波映射。Step 4: Map the frequency domain signal to M subcarriers, and perform N-point IFFT to obtain the time domain signal as {x(0),x(1),...,x(N-1)}. Among them, the value of N is determined by the system bandwidth, and N is greater than M. Optionally, when there are multiple transmitting antennas, the frequency domain signal can also be multiplied by the precoding matrix before subcarrier mapping.
step 5：对时域信号加循环前缀后进行数模转换获得模拟信号，并通过天线发送该模拟信号。Step 5: Add a cyclic prefix to the time domain signal and perform digital-to-analog conversion to obtain an analog signal, and send the analog signal through the antenna.
4、频谱扩展：4. Spectrum expansion:
频谱扩展又称为频域扩展，是指对频域信号进行循环扩展。例如，原始的DFT-S-OFDM信号中，频域信号占用M个子载波，频域信号为{X(0),X(1),...,X(M-1)}。将频域信号进行循环扩充，例如总计扩展E个元素，其中向左(或称为向前)扩展P个元素，向右(或称为向后)扩展E-P个元素，得到包含Q＝M+E个元素的频域扩展后的信号{X(M-P),X(M-P+1),...,X(M-1),X(0),X(1),...,X(M-1),X(0),X(1),...,X(E-P-1)}。将频域扩展后的信号映射到M+E个子载波上并发送。也即是，频域扩展后的信号将占用更多的子载波。Spectrum expansion, also known as frequency domain expansion, refers to the cyclic expansion of frequency domain signals. For example, in the original DFT-S-OFDM signal, the frequency domain signal occupies M subcarriers, and the frequency domain signal is {X(0),X(1),...,X(M-1)}. The frequency domain signal is cyclically expanded, for example, a total of E elements are expanded, of which P elements are expanded to the left (or called forward), and E-P elements are expanded to the right (or called backward), resulting in Q=M+ The frequency domain expanded signal of E elements {X(M-P),X(M-P+1),...,X(M-1),X(0),X(1),..., X(M-1),X(0),X(1),...,X(E-P-1)}. The frequency domain extended signal is mapped onto the M+E subcarriers and sent. That is, the signal after frequency domain expansion will occupy more subcarriers.
其中，为了描述频域扩展的子载波数量所占比例，引入频域扩展比例的定义。其中，本申请中的频域扩展比例包括以下两种定义方式：

α2＝1-α1  (2)Among them, in order to describe the proportion of the number of subcarriers in frequency domain expansion, the definition of frequency domain expansion ratio is introduced. Among them, the frequency domain expansion ratio in this application includes the following two definitions:

α 2 =1-α 1 (2)
其中，α1和α2均表示频域扩展比例，M表示频域扩展前的子载波数量，Q表示频域扩展后的子载波数量，则Q-M表示频域扩展子载波数量。公式(1)和(2)均可以描述频域扩展的子载波的数量所占比例，并且根据公式(1)和(2)可以推导：α1越大，频域扩展子载波数量越大；α2越大，频域扩展子载波数量越小。其中，α1＝0或α2＝1表示不进行频域扩展。Among them, α 1 and α 2 both represent the frequency domain expansion ratio, M represents the number of subcarriers before frequency domain expansion, Q represents the number of subcarriers after frequency domain expansion, and QM represents the number of frequency domain expansion subcarriers. Both formulas (1) and (2) can describe the proportion of the number of frequency domain extended subcarriers, and according to formulas (1) and (2), it can be deduced: the larger α 1 is, the greater the number of frequency domain extended subcarriers; The larger α 2 is, the smaller the number of frequency domain extension subcarriers is. Among them, α 1 =0 or α 2 =1 indicates that frequency domain expansion is not performed.
例如，图2为一种频域扩展的示意图。假设频域扩展前的子载波数量M＝8，总计扩展E＝4个元素，则频域扩展后的子载波数量Q＝M+E＝12。其中向左(或称为向前)扩展P＝2个元素，向右(或称为向后)扩展E-P＝2个元素。根据公式(1)，可以计算得到频域扩展比例α1＝(12-8)/8＝50％。假设频域扩展前的信号表示为{X(0),X(1),X(2),X(3),X(4),X(5),X(6),X(7)}，则经过频域扩展处理后的信号表示为{X(6),X(7),X(0),X(1),X(2),X(3),X(4),X(5),X(6),X(7),X(0),X(1)}。频域扩展后的信号映射到12个子载波上并发送。For example, Figure 2 is a schematic diagram of frequency domain extension. Assume that the number of subcarriers before frequency domain expansion is M=8, and the total expansion E=4 elements, then the number of subcarriers after frequency domain expansion is Q=M+E=12. Among them, P=2 elements are extended to the left (or called forward), and EP=2 elements are extended to the right (or called backward). According to formula (1), the frequency domain expansion ratio α 1 =(12-8)/8=50% can be calculated. Assume that the signal before frequency domain expansion is expressed as {X(0),X(1),X(2),X(3),X(4),X(5),X(6),X(7)} , then the signal after frequency domain expansion processing is expressed as {X(6),X(7),X(0),X(1),X(2),X(3),X(4),X( 5),X(6),X(7),X(0),X(1)}. The frequency domain expanded signal is mapped to 12 subcarriers and transmitted.
可选的，本申请中的频域扩展比例还包括以下两种定义方式：

δ2＝1-δ1   (4)Optionally, the frequency domain expansion ratio in this application also includes the following two definition methods:

δ 2 =1-δ 1 (4)
其中，δ1和δ2均表示频域扩展比例，M表示频域扩展前的子载波数量，Q表示频域扩展后的子载波数量，则Q-M表示频域扩展子载波数量。公式(3)和(4)均可以描述频域扩展的子载波的数量所占比例，并且根据公式(3)和(4)可以推导：δ1越大，频域扩展子载波数量越大；δ2越大，频域扩展子载波数量越小。其中，δ1＝0或δ2＝1表示不进行频域扩展。也就是说，当本申请中的频域扩展比例定义满足公式(1)和公式(3)时，其变化趋势是类似的；当本申请中的频域扩展比例定义满足公式(2)和公式(4)时，其变化趋势是类似的。后文实施例中以α1和α2为例进行描述，但并不限定。 Among them, δ 1 and δ 2 both represent the frequency domain expansion ratio, M represents the number of subcarriers before frequency domain expansion, Q represents the number of subcarriers after frequency domain expansion, and QM represents the number of frequency domain expansion subcarriers. Both formulas (3) and (4) can describe the proportion of the number of frequency domain extended subcarriers, and according to formulas (3) and (4), it can be deduced: the larger δ 1 is, the greater the number of frequency domain extended subcarriers; The larger δ 2 is, the smaller the number of frequency domain extension subcarriers is. Among them, δ 1 =0 or δ 2 =1 indicates that frequency domain expansion is not performed. That is to say, when the frequency domain expansion ratio definition in this application satisfies formula (1) and formula (3), its changing trend is similar; when the frequency domain expansion ratio definition in this application satisfies formula (2) and formula (4), its changing trend is similar. In the following embodiments, α 1 and α 2 are used as examples for description, but are not limiting.
5、频域频谱整形FDSS：5. Frequency domain spectrum shaping FDSS:
FDSS是指对频域信号进行加窗滤波，加窗滤波是指将频域信号与滤波器系数逐位相乘。例如，图3为一种频域频谱整形的示意图。原始的DFT-S-OFDM信号中，频域信号占用M个子载波，假设频域信号为{X(0),X(1),...,X(M-1)}，滤波器系数为{W(0),W(1),...,W(M-1)}，则经过加窗滤波处理后的频域信号为{X(0)W(0),X(1)W(1),...,X(M-1)W(M-1)}。FDSS refers to windowing filtering of frequency domain signals, and windowing filtering refers to multiplying frequency domain signals and filter coefficients bit by bit. For example, Figure 3 is a schematic diagram of frequency domain spectrum shaping. In the original DFT-S-OFDM signal, the frequency domain signal occupies M subcarriers. Assume that the frequency domain signal is {X(0),X(1),...,X(M-1)}, and the filter coefficient is {W(0),W(1),...,W(M-1)}, then the frequency domain signal after window filtering is {X(0)W(0),X(1)W (1),...,X(M-1)W(M-1)}.
其中，频域扩展和FDSS可以单独使用也可以同时使用。同时使用时，通常是先将频域信号进行循环扩充，然后再逐位乘以滤波器系数。例如，假设频域信号为{X(0),X(1),...,X(M-1)}，将频域信号进行循环扩充处理，获得频域扩展后的信号为{X(M-P),X(M-P+1),...,X(M-1),X(0),X(1),...,X(M-1),X(0),X(1),...,X(E-P-1)}；再将频域扩展后的信号和滤波器系数{W(0),W(1),...,W(M+E)}逐位相乘，获得频域扩展和加窗滤波后的频域信号，再映射到M+E个子载波上并发送。Among them, frequency domain extension and FDSS can be used alone or at the same time. When used simultaneously, the frequency domain signal is usually cyclically expanded first, and then multiplied by the filter coefficient bit by bit. For example, assuming that the frequency domain signal is {X(0), M-P),X(M-P+1),...,X(M-1),X(0),X(1),...,X(M-1),X(0),X (1),...,X(E-P-1)}; then expand the frequency domain signal and filter coefficient {W(0),W(1),...,W(M+E)} Multiply bit by bit to obtain the frequency domain signal after frequency domain expansion and windowing filtering, and then map it to the M+E subcarrier and send it.
6、编码性能损失与码率、调制阶数的关系：6. The relationship between coding performance loss, code rate and modulation order:
图4为一种频域扩展和FDSS对信号的PAPR性能的影响的示意图。图4示出了QPSK调制下使用FDSS和/或频域扩展的DFT-S-OFDM波形与不使用FDSS和频域扩展的DFT-S-OFDM波形的PAPR性能对比。其中，横坐标为PAPR性能，纵坐标为互补累积分布函数(complementary cumulative distribution function，CCDF)值。通过图4比较可知，FDSS和频域扩展可以降低信号的PAPR。Figure 4 is a schematic diagram of the impact of frequency domain extension and FDSS on the PAPR performance of the signal. Figure 4 shows the PAPR performance comparison of DFT-S-OFDM waveforms using FDSS and/or frequency domain extension and DFT-S-OFDM waveforms without FDSS and frequency domain extension under QPSK modulation. Among them, the abscissa is the PAPR performance, and the ordinate is the complementary cumulative distribution function (CCDF) value. It can be seen from the comparison in Figure 4 that FDSS and frequency domain extension can reduce the PAPR of the signal.
频域扩展和FDSS虽然可以有效降低PAPR，但是随着码率的升高，使用FDSS和/或频域扩展的DFT-S-OFDM波形与不使用FDSS和频域扩展的DFT-S-OFDM波形相比，误块率(block error rate，BLER)性能损失在逐渐增大。例如，图5为一种时域滤波估计下频域扩展和FDSS对信号的BLER性能的影响的示意图。图5示出了信道估计算法为时域滤波估计时，QPSK调制下使用FDSS和频域扩展的DFT-S-OFDM波形与不使用FDSS和频域扩展的DFT-S-OFDM波形的BLER性能对比。其中，横坐标为频谱效率，纵坐标为达到BLER＝0.1所需的SNR值。随着频谱效率的增大，QPSK调制下使用FDSS和频域扩展的DFT-S-OFDM波形与不使用FDSS和频域扩展的DFT-S-OFDM波形相比，BLER性能损失在逐渐增大，而BLER性能的损失会降低上行传输过程中的吞吐量。Although frequency domain extension and FDSS can effectively reduce PAPR, as the code rate increases, the DFT-S-OFDM waveform using FDSS and/or frequency domain extension is different from the DFT-S-OFDM waveform without FDSS and frequency domain extension. In comparison, the block error rate (BLER) performance loss is gradually increasing. For example, Figure 5 is a schematic diagram of the impact of frequency domain extension and FDSS on the BLER performance of the signal under a time domain filter estimation. Figure 5 shows the BLER performance comparison of the DFT-S-OFDM waveform using FDSS and frequency domain extension under QPSK modulation and the DFT-S-OFDM waveform without using FDSS and frequency domain extension when the channel estimation algorithm is time domain filter estimation. . Among them, the abscissa is the spectrum efficiency, and the ordinate is the SNR value required to achieve BLER=0.1. As the spectral efficiency increases, the BLER performance loss of the DFT-S-OFDM waveform using FDSS and frequency domain extension under QPSK modulation is gradually increasing compared with the DFT-S-OFDM waveform without FDSS and frequency domain extension. The loss of BLER performance will reduce the throughput during uplink transmission.
因此，在DFT-S-OFDM波形上使用频域扩展技术来降低PAPR时，需要尽量使***的BLER性能不受损。例如，表1为一种编码性能损失与码率、调制阶数的关系表，包括频域扩展前的码率、频域扩展后(例如频域扩展比例为0.25)的码率、QPSK调制下BLER性能差异、16QAM调制下BLER性能差异。例如，表1示出了固定频域扩展比例为0.25(也可以描述为固定频域扩展比例为25％)，在相同的总发射功率和相同的频谱效率下，比较高斯信道下码率提升后的DFT-S-OFDM波形相较于码率提升前的DFT-S-OFDM波形的BLER性能差异。其中，为了保证在相同的总发射功率和相同的频谱效率下，假设初始码率为R，使用m个子载波发射，每个子载波上的信号功率为P；那么码率提升后的码率为R*(1+α1)，使用m/(1+α1)个子载波发射，每个子载波上的信号功率为P*(1+α1)。假设码率提升后的发射方案达到BLER＝0.1所需的SNR值为SNR1，码率提升前的发射方案达到BLER＝0.1所需的SNR值为SNR2，那么BLER性能差异可以表示为ΔSNRBLER＝0.1＝SNR1-SNR2。其中，ΔSNRBLER＝0.1越大，说明码率提升带来的编码性能损失越大。Therefore, when using frequency domain extension technology on DFT-S-OFDM waveforms to reduce PAPR, it is necessary to try to ensure that the BLER performance of the system is not compromised. For example, Table 1 is a relationship between coding performance loss, code rate, and modulation order, including the code rate before frequency domain expansion, the code rate after frequency domain expansion (for example, the frequency domain expansion ratio is 0.25), and the code rate under QPSK modulation. BLER performance difference, BLER performance difference under 16QAM modulation. For example, Table 1 shows that the fixed frequency domain extension ratio is 0.25 (which can also be described as a fixed frequency domain extension ratio of 25%). Under the same total transmit power and the same spectrum efficiency, compare the Gaussian channel after the code rate is increased. The BLER performance difference between the DFT-S-OFDM waveform and the DFT-S-OFDM waveform before the code rate is increased. Among them, in order to ensure the same total transmit power and the same spectrum efficiency, assuming the initial code rate is R, using m sub-carriers for transmission, the signal power on each sub-carrier is P; then the code rate after the code rate is increased is R *(1+α 1 ), using m/(1+α 1 ) subcarriers for transmission, and the signal power on each subcarrier is P*(1+α 1 ). Assuming that the SNR value required for the transmission scheme after the code rate increase to reach BLER=0.1 is SNR 1 and the SNR value required for the transmission scheme before the code rate increase to reach BLER=0.1 is SNR 2 , then the BLER performance difference can be expressed as ΔSNR BLER =0.1 =SNR 1 -SNR 2 . Among them, the larger ΔSNR BLER=0.1 is, the greater the coding performance loss caused by the code rate increase.
表1：编码性能损失与码率、调制阶数的关系表
Table 1: Relationship between coding performance loss, code rate, and modulation order
根据表1可知，随着码率的提升，频域扩展带来的编码性能损失逐渐增大；并且调制阶数越大，码率 提升带来的编码性能损失也在进一步加大。随着频域扩展比例的增大，码率提升也越大，因此带来的编码性能损失也越大。然而随着频域扩展比例的增大，PAPR具有更大的下降空间。因此当频谱效率较小时，码率提升带来的编码性能损失较小，可采用较大的频域扩展比例以获得更大的PAPR性能增益。当频谱效率居中时，随着频域扩展比例的增加，编码性能的损失程度在逐渐增大，需要动态选择频域扩展比例。当频谱效率很高时，频域扩展带来的编码性能损失很大，不能使用频域扩展来降低PAPR。According to Table 1, it can be seen that as the code rate increases, the coding performance loss caused by frequency domain expansion gradually increases; and the larger the modulation order, the greater the code rate. The coding performance loss caused by the improvement is also further increasing. As the frequency domain expansion ratio increases, the code rate increases also, resulting in greater coding performance loss. However, as the frequency domain expansion ratio increases, PAPR has greater room for decline. Therefore, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and a larger frequency domain expansion ratio can be used to obtain greater PAPR performance gain. When the spectrum efficiency is in the middle, as the frequency domain expansion ratio increases, the loss of coding performance gradually increases, and the frequency domain expansion ratio needs to be dynamically selected. When the spectrum efficiency is very high, the coding performance loss caused by frequency domain extension is very large, and frequency domain extension cannot be used to reduce PAPR.
7、预留子载波技术：7. Reserved subcarrier technology:
除了通过频域扩展和FDSS技术来降低PAPR外，还可以通过预留子载波技术来降低PAPR。其中，预留子载波技术是指预先在频域上选取预留子载波(也可以称为峰值降低(peak reduction tones，PRT)子载波)，通过预留子载波放置频域削波信号C。其中，频域削波信号C经过离散傅立叶反变换(inverse discrete Fourier transformation，IDFT)可以在时域上产生消除原始时域波形峰值的反向波形。例如，假设预留子载波的索引为{i0,i1,...,iL-1}，数据信号X和频域削波信号C占用不同的频域资源，也即是，数据信号X在预留子载波上取值为0(即Xk＝0,k∈{i0,i1,...,iL-1})，频域削波信号C仅在预留子载波上取值不为0(即Ck≠0,k∈{i0,i1,...,iL-1})。基于数据信号X和频域削波信号C最终产生的时域信号可以表示为y＝x+c＝Q(X+C)，x表示由频域数据信号C产生的时域信号，c表示由频域削波信号产生的时域削波信号，Q表示IDFT矩阵。其中，利用梯度下降法迭代生成时域削波信号c，具体可以利用现有的梯度下降法进行迭代，迭代过程本申请不作限定。In addition to reducing PAPR through frequency domain extension and FDSS technology, PAPR can also be reduced through reserved subcarrier technology. Among them, the reserved subcarrier technology refers to selecting reserved subcarriers (also called peak reduction tones (PRT) subcarriers) in the frequency domain in advance, and placing the frequency domain clipping signal C through the reserved subcarriers. Among them, the frequency domain clipping signal C undergoes inverse discrete Fourier transformation (IDFT) to generate an inverse waveform in the time domain that eliminates the peak value of the original time domain waveform. For example, assuming that the index of the reserved subcarrier is {i 0 , i 1 ,..., i L-1 }, the data signal X and the frequency domain clipping signal C occupy different frequency domain resources, that is, the data signal The value of X is 0 on the reserved subcarrier (that is, The upper value is not 0 (that is, C k ≠0,k∈{i 0 ,i 1 ,...,i L-1 }). The time domain signal finally generated based on the data signal X and the frequency domain clipping signal C can be expressed as y=x+c=Q(X+C), where The frequency domain clipping signal generates the time domain clipping signal, Q represents the IDFT matrix. Among them, the gradient descent method is used to iteratively generate the time domain clipping signal c. Specifically, the existing gradient descent method can be used for iteration. The iteration process is not limited in this application.
二、本申请提供的通信方法2. Communication methods provided by this application
其中，本申请中的设备可以分为编码调制数据的发送端和接收端，其中，发送端可以是网络设备或终端设备，接收端对应为终端设备或网络设备。根据发送端和接收端的不同设备，可以分为上行传输场景(发送端为终端设备，接收端为网络设备)和下行传输场景(发送端为网络设备，接收端为终端设备)。下面针对不同的传输场景中对应的方法进行描述。Among them, the equipment in this application can be divided into a sending end and a receiving end for encoding and modulating data. The sending end can be a network device or a terminal device, and the receiving end can be a terminal device or a network device. According to different devices at the sender and receiver, it can be divided into uplink transmission scenarios (the sender is a terminal device and the receiver is a network device) and downlink transmission scenarios (the sender is a network device and the receiver is a terminal device). The following describes the corresponding methods in different transmission scenarios.
1、在发送端为网络设备，接收端为终端设备的下行传输场景中，网络设备执行的一种通信方法：1. In a downlink transmission scenario where the sender is a network device and the receiver is a terminal device, a communication method performed by the network device:
图6为本申请提供的第一种通信方法的流程示意图，包括以下步骤：Figure 6 is a schematic flow chart of the first communication method provided by this application, including the following steps:
S101，根据第一编码调制参数，确定第一子载波的数量N。S101. Determine the number N of first subcarriers according to the first coding modulation parameter.
其中，第一编码调制参数用于编码调制处理，所指代的是一类与编码调制处理相关的参数。本实施例中，第一编码调制参数可以为调制和编码方案(modulation and coding scheme，MCS)索引，或编码码率，或调制阶数。例如，表2为一种MCS索引与编码码率、调制阶数和频谱效率的映射关系。The first coding modulation parameter is used for coding modulation processing, and refers to a type of parameters related to coding modulation processing. In this embodiment, the first coding modulation parameter may be a modulation and coding scheme (MCS) index, a coding rate, or a modulation order. For example, Table 2 shows a mapping relationship between MCS index and coding rate, modulation order and spectral efficiency.
表2：一种MCS索引与编码码率、调制阶数和频谱效率的映射关系

Table 2: Mapping relationship between MCS index and coding rate, modulation order and spectral efficiency

通过表2分析可知，随着MCS索引值逐渐增大，编码码率和频谱效率也逐渐增大，调制阶数可以视为呈上升趋势。并且，通过表2可知，一个MCS索引对应一个编码码率和一个调制阶数。From the analysis in Table 2, it can be seen that as the MCS index value gradually increases, the coding rate and spectral efficiency also gradually increase, and the modulation order can be regarded as showing an upward trend. Moreover, it can be seen from Table 2 that an MCS index corresponds to a coding rate and a modulation order.
在该下行传输场景中，第一编码调制参数是网络设备确定的。例如，网络设备可以基于信道质量确定MCS索引。可选的，根据表2，当网络设备确定MCS索引时，还可以确定对应的编码码率和调制阶数。In this downlink transmission scenario, the first coding modulation parameter is determined by the network device. For example, the network device may determine the MCS index based on channel quality. Optionally, according to Table 2, when the network device determines the MCS index, it can also determine the corresponding coding rate and modulation order.
其中，第一子载波为频域扩展子载波或预留子载波。也即是，当网络设备采用频域扩展技术时，第一子载波为频域扩展子载波；当网络设备采用预留子载波技术时，第一子载波为预留子载波。其中，第一子载波的数量N的取值与第一编码调制参数的取值有关。例如，随着第一编码调制参数的取值逐渐增大，第一子载波的数量N逐渐减小。The first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier. That is, when the network equipment adopts the frequency domain extension technology, the first subcarrier is the frequency domain extension subcarrier; when the network equipment adopts the reserved subcarrier technology, the first subcarrier is the reserved subcarrier. The value of the number N of the first subcarriers is related to the value of the first coding modulation parameter. For example, as the value of the first coding modulation parameter gradually increases, the number N of first subcarriers gradually decreases.
为了便于描述频域扩展技术或者预留子载波技术对编码调制过程的影响(例如影响编码码率和/或调制阶数)，本申请引入第一比值。当网络设备采用频域扩展技术时，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值；当网络设备采用预留子载波技术时，第一比值为预留子载波数量与预留前的子载波数量的比值。例如，第一比值可以如公式(1)所示，当网络设备采用频域扩展技术时，α1表示频域扩展比例，M表示频域扩展前的子载波数量，Q表示频域扩展后的子载波数量，则Q-M表示频域扩展子载波数量；当网络设备采用预留子载波技术时，α1表示子载波预留比例，M表示预留前的子载波数量，Q表示预留后的子载波数量，则Q-M表示预留子载波数量。In order to facilitate the description of the impact of frequency domain extension technology or reserved subcarrier technology on the coding and modulation process (for example, affecting the coding rate and/or modulation order), this application introduces a first ratio. When the network equipment adopts frequency domain extension technology, the first ratio is the ratio of the number of frequency domain extension subcarriers to the number of subcarriers before frequency domain extension; when the network equipment adopts reserved subcarrier technology, the first ratio is the ratio of the number of reserved subcarriers. The ratio of the number of carriers to the number of subcarriers before reservation. For example, the first ratio can be as shown in formula (1). When the network equipment adopts frequency domain expansion technology, α 1 represents the frequency domain expansion ratio, M represents the number of subcarriers before frequency domain expansion, and Q represents the number of subcarriers after frequency domain expansion. The number of subcarriers, then QM represents the number of frequency domain extension subcarriers; when the network equipment adopts reserved subcarrier technology, α 1 represents the subcarrier reservation ratio, M represents the number of subcarriers before reservation, and Q represents the number of subcarriers after reservation. The number of subcarriers, QM represents the number of reserved subcarriers.
其中，第一比值的取值与第一编码调制参数的取值有关，包括以下几种情况：The value of the first ratio is related to the value of the first coding modulation parameter, including the following situations:
情况一：第一编码调制参数属于第一编码调制参数集合；Case 1: The first coding modulation parameter belongs to the first coding modulation parameter set;
第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值。λ 1 is greater than λ 2 , and the first ratio corresponding to λ 1 is smaller than the first ratio corresponding to λ 2 .
例如，当第一比值α1表示频域扩展比例或者子载波预留比例，且定义为时，随着MCS索引/编码码率/调制阶数的增加，频域扩展或者预留子载波导致PAPR性能的损失逐渐增大，因此需要减小第一比值。则当第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，且λ1大于λ2时，λ1对应的第一比值小于λ2对应的第一比值。其中，情况一中可以是只存在两个不同的编码调制参数，满足当λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值，而其他的编码调制参数对应的第一比值可以是一个固定值。For example, when the first ratio α 1 represents the frequency domain extension ratio or the subcarrier reservation ratio, and is defined as When, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually increases, so the first ratio needs to be reduced. Then, when there are at least two different coded modulation parameters λ 1 and λ 2 in the first coded modulation parameter set, and λ 1 is greater than λ 2 , the first ratio corresponding to λ 1 is smaller than the first ratio corresponding to λ 2 . Among them, in case one, there may be only two different coding modulation parameters, which satisfies that when λ 1 is greater than λ 2 , the first ratio corresponding to λ 1 is smaller than the first ratio corresponding to λ 2 , and the other coding modulation parameters correspond to the first ratio. A ratio can be a fixed value.
情况二：第一编码调制参数属于第一编码调制参数集合；Case 2: The first coding modulation parameter belongs to the first coding modulation parameter set;
第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值，λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 ,
例如，当第一比值α1表示频域扩展比例或者子载波预留比例，且定义为时，随着MCS索引/编码码率/调制阶数的增加，频域扩展或者预留子载波导致PAPR性能的损失逐渐增大，因此需要减小第一比值。与情况一不同的是，情况二限定第一编码调制参数集合中任意两个不同的编码调制参数λ1和λ2， 均满足λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值。例如，当λ3或λ4为不同取值，并且属于不同的取值区间时，则当λ3大于λ4时，λ3对应的第一比值小于λ4对应的第一比值。又例如，当λ3或λ4为不同取值，并且属于同一个取值区间时，则λ3大于λ4，λ3对应的第一比值等于λ4对应的第一比值。For example, when the first ratio α 1 represents the frequency domain extension ratio or the subcarrier reservation ratio, and is defined as When, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually increases, so the first ratio needs to be reduced. Different from case one, case two limits any two different coded modulation parameters λ 1 and λ 2 in the first coded modulation parameter set, It is satisfied that λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 . For example, when λ 3 or λ 4 have different values and belong to different value intervals, then when λ 3 is greater than λ 4 , the first ratio corresponding to λ 3 is smaller than the first ratio corresponding to λ 4 . For another example, when λ 3 or λ 4 have different values and belong to the same value range, then λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is equal to the first ratio corresponding to λ 4 .
下面对情况一和情况二中，第一编码调制参数为MCS索引、或编码码率、或调制阶数时，第一编码调制参数和第一比值之间的关系进行举例描述。The following describes an example of the relationship between the first coding modulation parameter and the first ratio when the first coding modulation parameter is an MCS index, a coding rate, or a modulation order in cases one and two.
1)当第一比值α1表示频域扩展比例或者子载波预留比例，且定义为时，假设第一比值的取值集合为W＝{α1_1,α1_2,α1_3,α1_4}且α1_1>α1_2>α1_3>α1_4，第一比值和MCS索引之间的映射关系如表3所示。其中，表3中若配置了高层参数tp-pi2BPSK，则调制阶数q＝1，否则q＝2。1) When the first ratio α 1 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When , assuming that the value set of the first ratio is W={α 1_1 , α 1_2 , α 1_3 , α 1_4 } and α 1_1 >α 1_2 >α 1_3 >α 1_4 , the mapping relationship between the first ratio and the MCS index as shown in Table 3. Among them, if the high-level parameter tp-pi2BPSK is configured in Table 3, the modulation order q=1, otherwise q=2.
表3：第一比值和MCS索引之间的映射关系表
Table 3: Mapping relationship between the first ratio and MCS index
例如，假设第一比值的取值集合为W＝{0.375,0.333,0.25,0.16}，γ1＝0,γ2＝7,γ3＝8,γ4＝10，γ5＝11,γ6＝12,γ7＝13,γ8＝16。当IMCS＝9时，根据表3可以确定第一比值α1＝0.333，从而可以根据第一比值的定义以及已知的频域扩展前的子载波数量M，确定第一子载波的数量N＝Q-M＝0.333*M。For example, assume that the value set of the first ratio is W={0.375, 0.333, 0.25, 0.16}, γ 1 =0, γ 2 =7, γ 3 =8, γ 4 =10, γ 5 =11, γ 6 =12, γ 7 =13, γ 8 =16. When I MCS =9, the first ratio α 1 =0.333 can be determined according to Table 3, so that according to the definition of the first ratio As well as the known number M of subcarriers before frequency domain expansion, the number of first subcarriers is determined to be N=QM=0.333*M.
2)当第一比值α1表示频域扩展比例或者子载波预留比例，且定义为时，假设第一比值的取值集合为W＝{α1_1,α1_2,α1_3,α1_4}且α1_1>α1_2>α1_3>α1_4，第一比值和编码码率之间的映射关系如表4所示。2) When the first ratio α 1 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When , assuming that the value set of the first ratio is W={α 1_1 , α 1_2 , α 1_3 , α 1_4 } and α 1_1 >α 1_2 >α 1_3 >α 1_4 , the mapping between the first ratio and the coding rate The relationship is shown in Table 4.
表4：第一比值和编码码率之间的映射关系表
Table 4: Mapping relationship between the first ratio and coding rate
例如，假设第一比值的取值集合为W＝{0.375,0.333,0.25,0.16}，γ1＝0,γ2＝1/8,γ3＝1/6，γ4＝1/3,γ5＝1/2。当R＝1/7时，根据表4可以确定第一比值α1＝0.333，从而可以根据第一比值的定义以及已知的频域扩展前的子载波数量M，确定第一子载波的数量N＝Q-M＝0.333*M。 For example, assume that the value set of the first ratio is W={0.375,0.333,0.25,0.16}, γ 1 =0, γ 2 =1/8, γ 3 =1/6, γ 4 =1/3, γ 5 =1/2. When R=1/7, the first ratio α 1 =0.333 can be determined according to Table 4, so that according to the definition of the first ratio As well as the known number M of subcarriers before frequency domain expansion, the number of first subcarriers is determined to be N=QM=0.333*M.
3)当第一比值α1表示频域扩展比例或者子载波预留比例，且定义为时，假设第一比值的取值集合为W＝{α1_1,α1_2}且α1_1>α1_2，第一比值和调制阶数之间的映射关系如表5所示。3) When the first ratio α 1 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When , assuming that the value set of the first ratio is W={α 1_1 , α 1_2 } and α 1_1 >α 1_2 , the mapping relationship between the first ratio and the modulation order is shown in Table 5.
表5：第一比值和调制阶数之间的映射关系表
Table 5: Mapping relationship between first ratio and modulation order
例如，假设第一比值的取值集合为W＝{0.25,0.16}，ρ1＝0,ρ2＝2,ρ3＝4，当Qm＝2时，根据表5可以确定第一比值α1＝0.25，从而可以根据第一比值的定义以及已知的频域扩展前的子载波数量M，确定第一子载波的数量N＝Q-M＝0.25*M。For example, assume that the value set of the first ratio is W={0.25,0.16}, ρ 1 =0, ρ 2 =2, ρ 3 =4. When Q m =2, the first ratio α can be determined according to Table 5 1 =0.25, so according to the definition of the first ratio As well as the known number M of subcarriers before frequency domain expansion, determine the number of first subcarriers N=QM=0.25*M.
其中，上述1)至3)中的举例仅为一种示例，本申请并不限定。并且，第一比值的定义还可以表示为也即是，第一比值的取值还可以采用百分比的形式，本申请也不限定。Among them, the examples in 1) to 3) above are only examples, and this application is not limiting. Moreover, the definition of the first ratio can also be expressed as That is to say, the value of the first ratio can also be in the form of a percentage, which is not limited by this application.
情况三：当第一编码调制参数的取值小于或等于第一阈值时，第一编码调制参数的取值x对应的第一比值α1满足：
α1＝μ1*x+μ2  (5)Case 3: When the value of the first coding modulation parameter is less than or equal to the first threshold, the first ratio α 1 corresponding to the value x of the first coding modulation parameter satisfies:
α 1 =μ 1 *x+μ 2 (5)
其中，μ1为负实数，μ2为正实数。Among them, μ 1 is a negative real number, and μ 2 is a positive real number.
或者，当第一编码调制参数的取值大于第一阈值时，第一编码调制参数的取值x对应的第一比值α1为第一值。第一值为0或者趋近于0的值。Or, when the value of the first coded modulation parameter is greater than the first threshold, the first ratio α 1 corresponding to the value x of the first coded modulation parameter is the first value. The first value is 0 or a value close to 0.
例如，当第一比值α1表示频域扩展比例或者子载波预留比例，且定义为时，随着MCS索引/编码码率/调制阶数的增加，频域扩展或者预留子载波导致PAPR性能的损失逐渐增大，因此需要减小第一比值。与情况一或情况二不同的是，虽然情况三中采用函数映射关系来描述第一编码调制参数与第一比值的关系，但是所描述的第一编码调制参数与第一比值的关系的变化趋势是类似的。例如，根据公式(5)，对于任意两个不同的编码调制参数λ3和λ4，当λ3大于λ4时,λ3对应的第一比值小于或等于λ4对应的第一比值。For example, when the first ratio α 1 represents the frequency domain extension ratio or the subcarrier reservation ratio, and is defined as When, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually increases, so the first ratio needs to be reduced. What is different from case one or case two is that although the function mapping relationship is used in case three to describe the relationship between the first coded modulation parameter and the first ratio, the described changing trend of the relationship between the first coded modulation parameter and the first ratio is similar. For example, according to formula (5), for any two different coding modulation parameters λ 3 and λ 4 , when λ 3 is greater than λ 4 , the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 .
下面对情况三中，第一编码调制参数为MCS索引、或编码码率时，第一编码调制参数和第一比值之间的关系进行举例描述。The following describes an example of the relationship between the first coding modulation parameter and the first ratio when the first coding modulation parameter is an MCS index or a coding rate in case three.
1)当第一比值α1表示频域扩展比例或者子载波预留比例，且定义为时，根据公式(5)可以推导MCS索引IMCS与第一比值α1之间的映射函数如公式(6)所示：
1) When the first ratio α 1 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When , according to formula (5), the mapping function between the MCS index I MCS and the first ratio α 1 can be derived as shown in formula (6):
假设该映射函数中的参数取值为μ1＝-0.028,μ2＝0.585,γ＝16，其中，公式(6)中的γ表示第一阈值。当IMCS＝9时，根据公式(6)可以计算确定第一比值为α1＝0.333，从而可以根据第一比值的定义以及已知的频域扩展前的子载波数量M，确定第一子载波的数量N＝Q-M＝0.333*M。Assume that the parameter values in the mapping function are μ 1 =-0.028, μ 2 =0.585, and γ = 16, where γ in formula (6) represents the first threshold. When I MCS =9, the first ratio can be calculated and determined as α 1 =0.333 according to formula (6), so that according to the definition of the first ratio As well as the known number M of subcarriers before frequency domain expansion, the number of first subcarriers is determined to be N=QM=0.333*M.
2)当第一比值α1表示频域扩展比例或者子载波预留比例，且定义为时，根据公式(5)可以推导编码码率R与第一比值α1之间的映射函数如公式(7)所示：
2) When the first ratio α 1 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When , according to formula (5), the mapping function between the coding rate R and the first ratio α 1 can be derived as shown in formula (7):
假设该映射函数中的参数取值为μ1＝-0.54916,μ2＝0.4332,η＝1/2，其中，公式(7)中的η表示第一阈值。当R＝1/6时，根据公式(7)可以计算确定第一比值为α1＝0.342，从而可以根据第一比值的定义以及已知的频域扩展前的子载波数量M，确定第一子载波的数量N＝Q-M＝0.342*M。Assume that the parameter values in the mapping function are μ 1 =-0.54916, μ 2 =0.4332, and η = 1/2, where η in formula (7) represents the first threshold. When R=1/6, the first ratio can be calculated and determined to be α 1 =0.342 according to formula (7), so that according to the definition of the first ratio As well as the known number M of subcarriers before frequency domain expansion, the number of first subcarriers is determined to be N=QM=0.342*M.
可选的，除了上述情况一至情况三中描述的第一编码调制参数与第一比值之间的关系之外，本申请还提供了另一种第一编码调制参数与第二比值α2之间的关系，第二比值α2和第一比值α1满足α2＝1-α1。例如，第二比值如公式(2)所示，第二比值α2也可以表示频域扩展比例或者子载波预留比例，且定义为当网络设备采用频域扩展技术时，α2表示频域扩展比例，M表示频域扩展前的子载波数量，Q表示频域扩展后的子载波数量，则Q-M表示频域扩展子载波数量；当网络设备采用预留子载波技术时，α2表示子载波预留比例，M表示预留前的子载波数量，Q表示预留后的子载波数量，则Q-M表示预留子载波数量。Optionally, in addition to the relationship between the first encoding modulation parameter and the first ratio described in the above situations one to three, this application also provides another relationship between the first encoding modulation parameter and the second ratio α 2 The relationship between the second ratio α 2 and the first ratio α 1 satisfies α 2 =1-α 1 . For example, the second ratio is as shown in formula (2), and the second ratio α 2 can also represent the frequency domain extension ratio or the subcarrier reservation ratio, and is defined as When network equipment adopts frequency domain expansion technology, α 2 represents the frequency domain expansion ratio, M represents the number of subcarriers before frequency domain expansion, Q represents the number of subcarriers after frequency domain expansion, then QM represents the number of frequency domain expansion subcarriers; When network equipment adopts reserved subcarrier technology, α 2 represents the subcarrier reservation ratio, M represents the number of subcarriers before reservation, Q represents the number of subcarriers after reservation, and QM represents the number of reserved subcarriers.
其中，第二比值的取值与第一编码调制参数的取值有关，包括以下几种情况：The value of the second ratio is related to the value of the first coding modulation parameter, including the following situations:
情况四：第一编码调制参数属于第一编码调制参数集合；Case 4: The first coding modulation parameter belongs to the first coding modulation parameter set;
第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
λ1大于λ2，λ1对应的第二比值大于λ2对应的第二比值。λ 1 is greater than λ 2 , and the second ratio corresponding to λ 1 is greater than the second ratio corresponding to λ 2 .
例如，当第二比值α2表示频域扩展比例或者子载波预留比例，且定义为时，随着MCS索引/编码码率/调制阶数的增加，频域扩展或者预留子载波导致PAPR性能的损失逐渐减小，因此可以增大第二比值。则当第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，且λ1大于λ2时，λ1对应的第二比值大于λ2对应的第二比值。其中，情况四中可以是只存在两个不同的编码调制参数，满足当λ1大于λ2，λ1对应的第二比值大于λ2对应的第二比值，而其他的编码调制参数对应的第二比值可以是一个固定值。For example, when the second ratio α 2 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually decreases, so the second ratio can be increased. Then, when there are at least two different coded modulation parameters λ 1 and λ 2 in the first coded modulation parameter set, and λ 1 is greater than λ 2 , the second ratio corresponding to λ 1 is greater than the second ratio corresponding to λ 2 . Among them, in case 4, there may be only two different coding modulation parameters, which satisfies that when λ 1 is greater than λ 2 , the second ratio corresponding to λ 1 is greater than the second ratio corresponding to λ 2 , and the other coding modulation parameters correspond to the second ratio. The second ratio can be a fixed value.
情况五：第一编码调制参数属于第一编码调制参数集合；Case 5: The first coding modulation parameter belongs to the first coding modulation parameter set;
第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
λ3大于λ4，λ3对应的第二比值小于或等于λ4对应的第二比值，λ 3 is greater than λ 4 , and the second ratio corresponding to λ 3 is less than or equal to the second ratio corresponding to λ 4 ,
例如，当第二比值α2表示频域扩展比例或者子载波预留比例，且定义为时，随着MCS索引/编码码率/调制阶数的增加，频域扩展或者预留子载波导致PAPR性能的损失逐渐减小，因此可以增大第二比值。与情况一不同的是，情况二限定第一编码调制参数集合中任意两个不同的编码调制参数λ1和λ2，均满足λ3大于λ4，λ3对应的第二比值大于或等于λ4对应的第二比值。例如，当λ3或λ4为不同取值，并且属于不同的取值区间时，则当λ3大于λ4时，λ3对应的第二比值大于λ4对应的第二比值。又例如，当λ3或λ4为不同取值，并且属于同一个取值区间时，则λ3大于λ4，λ3对应的第二比值等于λ4对应的第二比值。For example, when the second ratio α 2 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually decreases, so the second ratio can be increased. Different from case one, case two limits any two different coded modulation parameters λ 1 and λ 2 in the first coded modulation parameter set to satisfy that λ 3 is greater than λ 4 , and the second ratio corresponding to λ 3 is greater than or equal to λ 4 corresponds to the second ratio. For example, when λ 3 or λ 4 have different values and belong to different value intervals, then when λ 3 is greater than λ 4 , the second ratio corresponding to λ 3 is greater than the second ratio corresponding to λ 4 . For another example, when λ 3 or λ 4 have different values and belong to the same value range, then λ 3 is greater than λ 4 , and the second ratio corresponding to λ 3 is equal to the second ratio corresponding to λ 4 .
下面对情况四和情况五中，第一编码调制参数为MCS索引、或编码码率、或调制阶数时，第一编码调制参数和第二比值之间的关系进行举例描述。The following describes an example of the relationship between the first coding modulation parameter and the second ratio when the first coding modulation parameter is an MCS index, a coding rate, or a modulation order in cases four and five.
1)当第二比值α2表示频域扩展比例或者子载波预留比例，且定义为时，假设第二比值的取值集合为W＝{α2_1,α2_2,α2_3,α2_4}且α2_1<α2_2<α2_3<α2_4，第二比值和MCS索引之间的映射关系如表6所示。1) When the second ratio α 2 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When , assuming that the value set of the second ratio is W={α 2_1 , α 2_2 , α 2_3 , α 2_4 } and α 2_1 <α 2_2 <α 2_3 <α 2_4 , the mapping relationship between the second ratio and the MCS index As shown in Table 6.
表6：第二比值和MCS索引之间的映射关系表

Table 6: Mapping relationship between the second ratio and MCS index

例如，假设第二比值的取值集合为W＝{0.625,0.667,0.75,0.84}，γ1＝0,γ2＝7,γ3＝8，γ4＝10,γ5＝11,γ6＝12,γ7＝13,γ8＝16。当IMCS＝9时，根据表6可以确定第二比值α2＝0.667，从而可以根据第二比值的定义以及已知的频域扩展前的子载波数量M，确定第一子载波的数量N＝Q-M＝(1-0.667)*M＝0.333*M。For example, assume that the value set of the second ratio is W={0.625, 0.667, 0.75, 0.84}, γ 1 =0, γ 2 =7, γ 3 =8, γ 4 =10, γ 5 =11, γ 6 =12, γ 7 =13, γ 8 =16. When I MCS =9, the second ratio α 2 =0.667 can be determined according to Table 6, so that according to the definition of the second ratio As well as the known number M of subcarriers before frequency domain expansion, it is determined that the number of first subcarriers is N=QM=(1-0.667)*M=0.333*M.
可见，由于第一比值和第二比值满足一定的关系和变化规律，则采用第一比值和第二比值，所确定的第一子载波的数量是相同的。It can be seen that since the first ratio and the second ratio satisfy a certain relationship and change rule, the number of first subcarriers determined using the first ratio and the second ratio is the same.
2)当第二比值α2表示频域扩展比例或者子载波预留比例，且定义为时，假设第二比值的取值集合为W＝{α2_1,α2_2,α2_3,α2_4}且α2_1<α2_2<α2_3<α2_4，第二比值和编码码率之间的映射关系如表7所示。2) When the second ratio α 2 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When , assuming that the value set of the second ratio is W={α 2_1 , α 2_2 , α 2_3 , α 2_4 } and α 2_1 <α 2_2 <α 2_3 <α 2_4 , the mapping between the second ratio and the coding rate The relationship is shown in Table 7.
表7：第二比值和编码码率之间的映射关系表
Table 7: Mapping relationship between the second ratio and coding rate
例如，假设第二比值的取值集合为W＝{0.625,0.667,0.75,0.84}，γ1＝0,γ2＝1/8,γ3＝1/6，γ4＝1/3,γ5＝1/2。当R＝1/7时，根据表7可以确定第二比值α2＝0.667，从而可以根据第二比值的定义以及已知的频域扩展前的子载波数量M，确定第一子载波的数量N＝Q-M＝(1-0.667)*M＝0.333*M。For example, assume that the value set of the second ratio is W={0.625,0.667,0.75,0.84}, γ 1 =0, γ 2 =1/8, γ 3 =1/6, γ 4 =1/3, γ 5 =1/2. When R=1/7, the second ratio α 2 =0.667 can be determined according to Table 7, so that according to the definition of the second ratio As well as the known number M of subcarriers before frequency domain expansion, it is determined that the number of first subcarriers is N=QM=(1-0.667)*M=0.333*M.
3)当第二比值α2表示频域扩展比例或者子载波预留比例，且定义为时，假设第二比值的取值集合为W＝{α2_1,α2_2}且α2_1<α2_2，第一比值和调制阶数之间的映射关系如表8所示。3) When the second ratio α 2 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When , assuming that the value set of the second ratio is W={α 2_1 , α 2_2 } and α 2_1 <α 2_2 , the mapping relationship between the first ratio and the modulation order is shown in Table 8.
表8：第二比值和调制阶数之间的映射关系表
Table 8: Mapping relationship between the second ratio and modulation order
例如，假设第二比值的取值集合为W＝{0.75,0.84}，ρ1＝0,ρ2＝2,ρ3＝4，当Qm＝2时，根据表8可以 确定第二比值α2＝0.75，从而可以根据第二比值的定义以及已知的频域扩展前的子载波数量M，确定第一子载波的数量N＝Q-M＝(1-0.75)*M＝0.25*M。For example, assume that the value set of the second ratio is W={0.75,0.84}, ρ 1 =0, ρ 2 =2, ρ 3 =4. When Q m =2, according to Table 8 Determine the second ratio α 2 =0.75, so that according to the definition of the second ratio As well as the known number M of subcarriers before frequency domain expansion, the number of first subcarriers is determined to be N=QM=(1-0.75)*M=0.25*M.
其中，上述1)至3)中的举例仅为一种示例，本申请并不限定。并且，第二比值的定义还可以表示为也即是，第二比值的取值还可以采用百分比的形式，本申请也不限定。Among them, the examples in 1) to 3) above are only examples, and this application is not limiting. Moreover, the definition of the second ratio can also be expressed as That is to say, the value of the second ratio can also be in the form of a percentage, which is not limited by this application.
情况六：当第一编码调制参数的取值小于或等于第一阈值时，第一编码调制参数的取值x对应的第二比值α2满足：
α2＝μ3*x+μ4   (8)Case 6: When the value of the first coding modulation parameter is less than or equal to the first threshold, the second ratio α 2 corresponding to the value x of the first coding modulation parameter satisfies:
α 2 =μ 3 *x+μ 4 (8)
其中，μ3为正实数，μ4为正实数。Among them, μ 3 is a positive real number, and μ 4 is a positive real number.
或者，当第一编码调制参数的取值大于第一阈值时，第一编码调制参数的取值x对应的第二比值α2为第二值。第二值为1或者趋近于1的值。Or, when the value of the first coded modulation parameter is greater than the first threshold, the second ratio α 2 corresponding to the value x of the first coded modulation parameter is the second value. The second value is 1 or a value close to 1.
例如，当第二比值α2表示频域扩展比例或者子载波预留比例，且定义为时，随着MCS索引/编码码率/调制阶数的增加，频域扩展或者预留子载波导致PAPR性能的损失逐渐减小，因此可以增加第二比值。与情况四或情况五不同的是，虽然情况六中采用函数映射关系来描述第一编码调制参数与第二比值的关系，但是所描述的第一编码调制参数与第二比值的关系的变化趋势是类似的。例如，根据公式(8)，对于任意两个不同的编码调制参数λ3和λ4，当λ3大于λ4时,λ3对应的第二比值大于或等于λ4对应的第二比值。For example, when the second ratio α 2 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When, as the MCS index/coding rate/modulation order increases, the loss of PAPR performance caused by frequency domain expansion or reserved subcarriers gradually decreases, so the second ratio can be increased. What is different from case four or case five is that although the function mapping relationship is used in case six to describe the relationship between the first coded modulation parameter and the second ratio, the changing trend of the described relationship between the first coded modulation parameter and the second ratio is similar. For example, according to formula (8), for any two different coding modulation parameters λ 3 and λ 4 , when λ 3 is greater than λ 4 , the second ratio corresponding to λ 3 is greater than or equal to the second ratio corresponding to λ 4 .
下面对情况六中，第一编码调制参数为MCS索引、或编码码率时，第一编码调制参数和第二比值之间的关系进行举例描述。The following describes an example of the relationship between the first coding modulation parameter and the second ratio when the first coding modulation parameter is an MCS index or a coding rate in case 6.
1)当第二比值α2表示频域扩展比例或者子载波预留比例，且定义为时，根据公式(8)可以推导MCS索引IMCS与第二比值α2之间的映射函数如公式(9)所示：
1) When the second ratio α 2 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When , according to formula (8), the mapping function between the MCS index I MCS and the second ratio α 2 can be derived as shown in formula (9):
假设该映射函数中的参数取值为μ3＝0.028,μ4＝0.415,γ＝16，其中，公式(9)中的γ表示第一阈值。当IMCS＝9时，根据公式(9)可以计算确定第二比值为α2＝0.667，从而可以根据第二比值的定义以及已知的频域扩展前的子载波数量M，确定第一子载波的数量N＝Q-M＝(1-0.667)*M＝0.333*M。Assume that the parameter values in the mapping function are μ 3 =0.028, μ 4 =0.415, and γ =16, where γ in formula (9) represents the first threshold. When I MCS =9, the second ratio can be calculated and determined to be α 2 =0.667 according to formula (9), so that according to the definition of the second ratio As well as the known number M of subcarriers before frequency domain expansion, it is determined that the number of first subcarriers is N=QM=(1-0.667)*M=0.333*M.
2)当第二比值α2表示频域扩展比例或者子载波预留比例，且定义为时，根据公式(8)可以推导编码码率R与第二比值α2之间的映射函数如公式(10)所示：
2) When the second ratio α 2 represents the frequency domain expansion ratio or the subcarrier reservation ratio, and is defined as When , according to formula (8), the mapping function between the coding rate R and the second ratio α 2 can be derived as shown in formula (10):
假设该映射函数中的参数取值为μ3＝0.54916,μ4＝0.5668,η＝1/2，其中，公式(10)中的η表示第一阈值。当R＝1/6时，根据公式(10)可以计算确定第二比值为α2＝0.658，从而可以根据第二比值的定义以及已知的频域扩展前的子载波数量M，确定第一子载波的数量N＝Q-M＝(1-0.658)*M＝0.342*M。Assume that the parameter values in the mapping function are μ 3 =0.54916, μ 4 =0.5668, and η =1/2, where η in formula (10) represents the first threshold. When R=1/6, according to formula (10), the second ratio can be calculated and determined to be α 2 =0.658, so that according to the definition of the second ratio As well as the known number M of subcarriers before frequency domain expansion, it is determined that the number of first subcarriers is N=QM=(1-0.658)*M=0.342*M.
可选的，根据上述情况一至情况六中的描述，根据第一编码调制参数所确定的第一子载波的数量可能为整数，也可能不为整数。但是在实际网络中传输时第一子载波的数量为整数，则当第一子载波的数量不为整数时，需要将第一子载波的数量N进行取整处理，得到取整后的第一子载波数量N′，N′为正整数a的整数倍，所述正整数a为1或12。其中，正整数a＝1表示取整后的第一子载波的数量N′为单个子载波的整数倍，正整数a＝12表示取整后的第一子载波的数量N′为一个资源块中包括的子载波的数量(通常为12个)的整数倍。 Optionally, according to the descriptions in the above situations one to six, the number of first subcarriers determined according to the first coding modulation parameter may be an integer or may not be an integer. However, when transmitting in an actual network, the number of first subcarriers is an integer. When the number of first subcarriers is not an integer, the number N of first subcarriers needs to be rounded to obtain the first rounded number. The number of subcarriers N′ is an integer multiple of a positive integer a, and the positive integer a is 1 or 12. Among them, the positive integer a=1 indicates that the number N′ of the first subcarrier after rounding is an integer multiple of a single subcarrier, and the positive integer a=12 indicates that the number N′ of the first subcarrier after rounding is one resource block. An integer multiple of the number of subcarriers included in (usually 12).
S102，在第二子载波上发送第一信号。S102. Send the first signal on the second subcarrier.
其中，当N不为0时，第二子载波包括频域扩展子载波和频域扩展前的子载波，或者，第二子载波包括预留子载波和预留前的子载波。也即是，当采用频域扩展技术或预留子载波技术时，第二子载波的数量等于频域扩展子载波的数量和频域扩展前的子载波数量之和，或者，第二子载波的数量等于预留子载波的数量和预留前的子载波的数量之和。可选的，若对第一子载波的数量进行了取整处理，当N不为0时，第二子载波的数量等于取整后的频域扩展子载波的数量和频域扩展前的子载波数量之和，或者，第二子载波的数量等于取整后的预留子载波的数量和预留前的子载波的数量之和。可选的，当N等于0时，表示不进行频域扩展或者预留子载波处理，则第二子载波即频域信号所需要的子载波数量。Wherein, when N is not 0, the second subcarrier includes a frequency domain extension subcarrier and a subcarrier before frequency domain extension, or the second subcarrier includes a reserved subcarrier and a pre-reservation subcarrier. That is, when frequency domain extension technology or reserved subcarrier technology is used, the number of second subcarriers is equal to the sum of the number of frequency domain extension subcarriers and the number of subcarriers before frequency domain extension, or, the second subcarrier The number is equal to the sum of the number of reserved subcarriers and the number of subcarriers before reservation. Optionally, if the number of first subcarriers is rounded, when N is not 0, the number of second subcarriers is equal to the number of frequency domain extension subcarriers after rounding and the number of subcarriers before frequency domain extension. The sum of the number of carriers, or the number of second subcarriers, is equal to the sum of the rounded number of reserved subcarriers and the number of pre-reserved subcarriers. Optionally, when N equals 0, it means that frequency domain extension or subcarrier reservation processing is not performed, and the second subcarrier is the number of subcarriers required for the frequency domain signal.
一种可选的实施方式中，发送第一信号之前，对数据比特进行编码调制等处理，生成第一信号，包括以下步骤：In an optional implementation, before sending the first signal, encoding and modulating the data bits to generate the first signal includes the following steps:
s11，根据第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率。s11: Determine the coding code rate according to the first ratio corresponding to the first coding modulation parameter or the first ratio corresponding to the rounding process of the number of first subcarriers.
其中，第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。也即是，确定编码码率所采用的第一比值可以是如前文情况一至情况六中描述的第一比值α1，也可以是对第一子载波的数量取整处理后对应的第一比值可选的，确定编码码率所采用的第一比值还可以是如前文情况一至情况六中描述的第二比值α2，或者是对第一子载波的数量取整处理后对应的第二比值 Wherein, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded The corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation. That is to say, the first ratio used to determine the coding rate may be the first ratio α 1 as described in cases one to six above, or it may be the corresponding first ratio after rounding the number of first subcarriers. Optionally, the first ratio used to determine the coding rate can also be the second ratio α 2 as described in cases one to six above, or the corresponding second ratio after rounding the number of first subcarriers.
s12，根据编码码率对数据比特进行编码，获得编码码字。s12, encode the data bits according to the encoding code rate to obtain the encoded codeword.
s13，根据MCS索引对应的调制阶数对所述编码码字进行调制，获得调制符号。s13: Modulate the encoded codeword according to the modulation order corresponding to the MCS index to obtain a modulation symbol.
s14，将调制符号经过离散傅里叶变换处理，获得频域信号。In s14, the modulation symbol is processed by discrete Fourier transform to obtain the frequency domain signal.
s15，对频域信号进行循环扩展或者子载波预留处理，获得第一信号。s15, perform cyclic expansion or subcarrier reservation processing on the frequency domain signal to obtain the first signal.
例如，上述步骤s11-s15，具体的执行流程包括：For example, the specific execution process of the above steps s11-s15 includes:
经过频域扩展或预留子载波处理后，编码码率变化为R′＝R*(1+α1)，假设Qm*R′*M个数据比特{a(0),a(1),...,a(Qm*R′*M-1)}经过LDPC编码处理，获得Qm*M个编码码字为{b(0),b(1),...,b(Qm*M-1)}，将Qm*M个编码码字{b(0),b(1),...,b(Qm*M-1)}经过调制阶数为Qm的调制处理，获得M个调制符号{s(0),s(1),...,s(M-1)}，将M个调制符号经过M点的DFT，获得频域信号为{X(0),X(1),...,X(M-1)}。其中，第一子载波的数量N＝α1*M，当对频域信号进行循环扩展时，向左(或称为向前)扩展P个元素，向右(或称为向后)扩展N-P个元素，得到包含Q＝M+N个元素的频域扩展后的信号{X(M-P),X(M-P+1),...,X(M-1),X(0),X(1),...,X(M-1),X(0),X(1),...,X(N-P-1)}。将频域扩展后的信号映射到M+N个子载波上并发送。或者，当对频域信号进行子载波预留处理时，向左(或称为向前)预留P个元素，向右(或称为向后)预留N-P个元素，再利用梯度下降算法得到预留子载波上的频域削波信号为{C(0),C(1),...,C(N-1)}，从而得到频域信号为{C(0),C(1),...,C(P-1),X(0),X(1),...,X(M-1),C(P),C(P+1),...,C(N-1)}。可选的，将该频域信号进行映射到Q个子载波上，并进行E点的IFFT得到时域信号{x(0),x(1),...,x(E-1)}。当存在发射多天线时，频域信号还可以乘以预编码矩阵后再进行子载波映射。对时域信号{x(0),x(1),...,x(E-1)}加循环前缀(cyclic prefix，CP)后进行数模转换得到模拟信号(例如第一信号实际指代的是这里的模拟信号)，并通过天线发送第一信号。After frequency domain extension or subcarrier reservation processing, the coding rate changes to R′=R*(1+α 1 ), assuming Q m *R′*M data bits {a(0),a(1) ,...,a(Q m *R′*M-1)} After LDPC encoding processing, Q m *M code words are obtained as {b(0),b(1),...,b( Q m *M-1)}, the Q m *M code words {b(0), b(1),..., b(Q m *M-1)} are modulated with the order Q m Modulation processing, obtain M modulation symbols {s(0),s(1),...,s(M-1)}, pass the M modulation symbols through M-point DFT, and obtain the frequency domain signal as {X (0),X(1),...,X(M-1)}. Among them, the number of first subcarriers N = α 1 *M. When the frequency domain signal is cyclically expanded, P elements are expanded to the left (or called forward) and NP is expanded to the right (or called backward). elements, and the frequency domain expanded signal containing Q=M+N elements is obtained {X(MP),X(M-P+1),...,X(M-1),X(0), X(1),...,X(M-1),X(0),X(1),...,X(NP-1)}. The frequency domain extended signal is mapped onto M+N subcarriers and sent. Or, when performing subcarrier reservation processing on frequency domain signals, reserve P elements to the left (or called forward) and NP elements to the right (or called backward), and then use the gradient descent algorithm The frequency domain clipping signal on the reserved subcarrier is {C(0),C(1),...,C(N-1)}, and the frequency domain signal is {C(0),C( 1),...,C(P-1),X(0),X(1),...,X(M-1),C(P),C(P+1),... ,C(N-1)}. Optionally, map the frequency domain signal to Q subcarriers, and perform IFFT at point E to obtain the time domain signal {x(0), x(1),...,x(E-1)}. When there are multiple transmitting antennas, the frequency domain signal can also be multiplied by the precoding matrix before subcarrier mapping. Add a cyclic prefix (CP) to the time domain signal {x(0), represents the analog signal here) and sends the first signal through the antenna.
可选的，上述具体的执行流程中，编码码率也可以不变，也即是，编码码率为根据表2所确定的码率R。后续的执行流程都是相似的，此处不再赘述。Optionally, in the above specific execution process, the encoding code rate may also remain unchanged, that is, the encoding code rate may be the code rate R determined according to Table 2. The subsequent execution processes are similar and will not be repeated here.
可选的，上述具体的执行流程中，对频域信号进行循环扩展或者子载波预留处理之后，还可以对频域信号进行加窗滤波处理，具体实现方式可以参考现有的加窗滤波处理方法，本申请不作限定。Optionally, in the above specific execution process, after performing cyclic expansion or subcarrier reservation processing on the frequency domain signal, windowing filtering processing can also be performed on the frequency domain signal. For specific implementation methods, please refer to the existing windowing filtering processing. The method is not limited in this application.
可选的，本小节中对频域扩展比例的描述是以α1和α2为例进行描述，但本申请不限定，例如，频域扩展比例还可以是δ1和δ2，δ1和δ2也满足如表3至表8所示的映射关系，或者如公式(7)至公式(10) 中的函数关系，具体实施方式可以参考对应的描述，此处不再赘述。Optionally, the description of the frequency domain expansion ratio in this section takes α 1 and α 2 as an example, but this application is not limited. For example, the frequency domain extension ratio can also be δ 1 and δ 2 , δ 1 and δ 2 also satisfies the mapping relationship shown in Table 3 to Table 8, or as shown in Formula (7) to Formula (10) For the functional relationship in , please refer to the corresponding description for the specific implementation, and will not be described again here.
2、在发送端为网络设备，接收端为终端设备的下行传输场景中，终端设备执行的通信方法：2. In a downlink transmission scenario where the sender is a network device and the receiver is a terminal device, the communication method performed by the terminal device is:
图7为本申请提供的第二种通信方法的流程示意图，包括以下步骤：Figure 7 is a schematic flow chart of the second communication method provided by this application, including the following steps:
S201，根据第一编码调制参数，确定第一子载波的数量N。S201. Determine the number N of first subcarriers according to the first coding modulation parameter.
S202，在第二子载波上接收第一信号。S202. Receive the first signal on the second subcarrier.
其中，当终端设备为接收端时，终端设备也可以根据第一编码调制参数，确定第一子载波的数量N。具体的确定方式，例如对第一子载波的相关描述，对第一编码调制参数的相关描述、对如何根据第一编码调制参数确定第一子载波数量N的描述，对第一比值、第二比值等的相关描述都可以参考第1小节中对应的描述，此处不再赘述。本实施例，在该下行传输场景中，第一编码调制参数可以是网络设备确定，并发送给终端设备的。例如，网络设备可以基于信道质量确定MCS索引，并向终端设备发送MCS索引。可选的，根据表2，当终端设备确定MCS索引时，还可以确定对应的编码码率和调制阶数。可选的，在该下行传输场景中，可能存在终端设备进行重传的情况。例如，当终端设备译码错误或者编码调制数据传输失败时，终端设备需要进行重传。其中，重传时MCS索引将变化，从而使得第一编码调制参数变化。在重传的情况下，第一编码调制参数是根据用于调度当前传输的下行控制信息(downlink control information，DCI)确定的。Wherein, when the terminal device is the receiving end, the terminal device may also determine the number N of first subcarriers according to the first coding modulation parameter. The specific determination method includes, for example, a description of the first subcarrier, a description of the first coding modulation parameter, a description of how to determine the number N of first subcarriers based on the first coding modulation parameter, a description of the first ratio, the second For relevant descriptions such as ratios, please refer to the corresponding descriptions in Section 1 and will not be repeated here. In this embodiment, in this downlink transmission scenario, the first coding modulation parameter may be determined by the network device and sent to the terminal device. For example, the network device may determine the MCS index based on the channel quality and send the MCS index to the terminal device. Optionally, according to Table 2, when the terminal device determines the MCS index, it can also determine the corresponding coding rate and modulation order. Optionally, in this downlink transmission scenario, the terminal device may retransmit. For example, when the terminal device makes a decoding error or fails to transmit coded and modulated data, the terminal device needs to retransmit. The MCS index will change during retransmission, causing the first coding modulation parameter to change. In the case of retransmission, the first coding modulation parameter is determined based on the downlink control information (DCI) used to schedule the current transmission.
其中，对第二子载波的相关描述也可以参考第1小节中对应的描述，此处不再赘述。For the relevant description of the second subcarrier, reference can also be made to the corresponding description in Section 1, which will not be described again here.
一种可选的实施方式中，接收第一信号之后，可以对第一信号进行解调译码处理，包括以下步骤：In an optional implementation, after receiving the first signal, the first signal can be demodulated and decoded, including the following steps:
s21，对第一信号进行去循环扩展或者去子载波预留处理，获得频域信号。s21, perform decyclic expansion or subcarrier reservation processing on the first signal to obtain a frequency domain signal.
s22，将频域信号经过离散傅里叶逆变换处理，获得调制符号；s22, process the frequency domain signal through inverse discrete Fourier transform to obtain the modulation symbol;
s23，根据MCS索引对应的调制阶数对调制信号进行解调，获得编码码字；s23, demodulate the modulated signal according to the modulation order corresponding to the MCS index to obtain the encoded codeword;
s24，根据第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率；s24, determine the coding code rate according to the first ratio corresponding to the first coding modulation parameter or the corresponding first ratio after rounding the number of first subcarriers;
s25，根据编码码率对所述编码码字进行解码，获得数据比特。s25, decode the encoded codeword according to the encoding code rate to obtain data bits.
其中，上述步骤s21-s25为第1小节中描述的步骤s11-s15的逆过程，例如，对第一信号进行去循环扩展处理，获得频域信号，也即是将包含Q＝M+N个元素的频域扩展后的信号{X(M-P),X(M-P+1),...,X(M-1),X(0),X(1),...,X(M-1),X(0),X(1),...,X(N-P-1)}进行去循环扩展处理，获得频域信号{X(0),X(1),...,X(M-1)}。再将频域信号{X(0),X(1),...,X(M-1)}经过离散傅里叶逆变换处理，获得M个调制符号{s(0),s(1),...,s(M-1)}。根据调制阶数Qm对M个调制符号进行解调，获得Qm*M个编码码字{b(0),b(1),...,b(Qm*M-1)}。经过频域扩展或预留子载波处理后，确定编码码率变化为R′＝R*(1+α1)，根据编码码率R′对Qm*M个编码码字{b(0),b(1),...,b(Qm*M-1)}进行解码，获得Qm*R′*M个数据比特{a(0),a(1),...,a(Qm*R′*M-1)}。Among them, the above-mentioned steps s21-s25 are the reverse process of steps s11-s15 described in section 1. For example, the first signal is decyclically extended to obtain a frequency domain signal, that is, it will contain Q=M+N The signal after the frequency domain expansion of the elements {X(MP),X(M-P+1),...,X(M-1),X(0),X(1),...,X( M-1), ,X(M-1)}. Then the frequency domain signal {X(0), ),...,s(M-1)}. Demodulate M modulation symbols according to the modulation order Q m , and obtain Q m *M encoded codewords {b(0), b(1),..., b(Q m *M-1)}. After frequency domain expansion or subcarrier reservation processing, it is determined that the coding rate change is R'=R*(1+α 1 ). According to the coding rate R', Q m *M code words {b(0) ,b(1),...,b(Q m *M-1)} is decoded to obtain Q m *R′*M data bits {a(0),a(1),...,a (Q m *R′*M-1)}.
需要说明的是，上述第1小节和第2小节中所描述的方法，若更换执行主体也可以实现。例如，在发送端为终端设备，接收端为网络设备的上行传输场景中，终端设备可以执行如第1小节中描述的第一种通信方法，网络设备可以执行如第2小节中描述的第二种通信方法。It should be noted that the methods described in subsections 1 and 2 above can also be implemented if the execution subject is replaced. For example, in an uplink transmission scenario where the sender is a terminal device and the receiver is a network device, the terminal device can perform the first communication method as described in Section 1, and the network device can perform the second communication method as described in Section 2. a communication method.
3、在发送端为终端设备，接收端为网络设备的上行传输场景中，网络设备执行的一种通信方法：3. In an uplink transmission scenario where the sender is a terminal device and the receiver is a network device, a communication method performed by the network device:
图8为本申请提供的第三种通信方法的流程示意图，包括以下步骤：Figure 8 is a schematic flow chart of the third communication method provided by this application, including the following steps:
S301，网络设备根据第一编码调制参数，确定第一子载波的数量N。S301: The network device determines the number N of first subcarriers based on the first coding modulation parameter.
S302，网络设备向终端设备发送指示信息，指示信息包括第一子载波的数量N或者第一比值。S302: The network device sends indication information to the terminal device, where the indication information includes the number N of first subcarriers or the first ratio.
其中，对第一子载波的相关描述，对第一编码调制参数的相关描述、对如何根据第一编码调制参数确定第一子载波数量N的描述，对第一比值、第二比值等的相关描述都可以参考第1小节中对应的描述，此处不再赘述。Among them, the relevant description of the first subcarrier, the relevant description of the first coding modulation parameter, the description of how to determine the number N of first subcarriers according to the first coding modulation parameter, the correlation of the first ratio, the second ratio, etc. For descriptions, please refer to the corresponding descriptions in Section 1 and will not be repeated here.
可选的，该实施例中，第一编码调制系数还包括频谱效率(频谱效率通常是由基站确定的，终端设备不涉及)。其中，当第一编码调制参数为频谱效率时，频谱效率与第一比值α1之间的关系也满足第1小节中描述的情况一至情况三以及相关举例，或者，频谱效率与第二比值α2之间的关系也满足第1小节中描述的情况四至情况六以及相关举例，此处不再赘述。 Optionally, in this embodiment, the first coded modulation coefficient also includes spectral efficiency (spectral efficiency is usually determined by the base station and is not involved in the terminal equipment). Among them, when the first coding modulation parameter is spectral efficiency, the relationship between spectral efficiency and the first ratio α 1 also satisfies the situations one to three described in Section 1 and related examples, or, the relationship between the spectral efficiency and the second ratio α The relationship between 2 also satisfies the situations 4 to 6 described in Section 1 and related examples, which will not be repeated here.
区别于第1小节中描述的方法，在该上行传输场景中，网络设备确定第一子载波的数量N后，可以通过一个指示信息向终端设备指示第一子载波的数量N或者第一比值，则终端设备可以直接接收指示信息，并根据指示信息生成并发送第一信号(也即是，终端设备无需自行确定第一子载波的数量N或者第一比值)。Different from the method described in Section 1, in this uplink transmission scenario, after the network device determines the number N of first subcarriers, it can indicate the number N of first subcarriers or the first ratio to the terminal device through an indication message. Then the terminal device can directly receive the indication information, and generate and send the first signal according to the indication information (that is, the terminal device does not need to determine the number N of the first subcarriers or the first ratio by itself).
一种可选的实施方式中，该指示信息可以通过在DCI中新增量化比特字段，该量化比特字段中的信息比特的不同取值，用于指示不同的第一子载波的数量N或者第一比值α1。例如，表9为本申请提供的一种第一比值和量化比特字段之间的映射关系。In an optional implementation, the indication information can be obtained by adding a quantization bit field in the DCI. Different values of the information bits in the quantization bit field are used to indicate the number N of different first subcarriers or the number N of the first subcarrier. A ratio α 1 . For example, Table 9 is a mapping relationship between the first ratio and the quantization bit field provided by this application.
表9：第一比值和量化比特字段之间的映射关系表
Table 9: Mapping relationship between the first ratio value and the quantization bit field
例如，当量化比特字段的取值为00时，该指示信息指示的第一比值为α1_1。其中，上述表9仅为一种示例，例如量化比特字段还可以通过更多的比特值来指示不同的第一比值，本申请不作限定。For example, when the value of the quantization bit field is 00, the first ratio indicated by the indication information is α 1_1 . The above-mentioned Table 9 is only an example. For example, the quantization bit field can also indicate different first ratios through more bit values, which is not limited in this application.
S303，网络设备在第二子载波上接收第一信号。S303: The network device receives the first signal on the second subcarrier.
其中，网络设备为接收端，可以在第二子载波上接收第一信号，对第二子载波的相关描述也可以参考第1小节中对应的描述，此处不再赘述。The network device is a receiving end and can receive the first signal on the second subcarrier. For the relevant description of the second subcarrier, please refer to the corresponding description in Section 1, which will not be described again here.
其中，网络设备接收第一信号之后，可以对第一信号进行解调译码处理，具体实施方法可以参考第2小节中对第一信号进行解调译码处理的描述，此处不再赘述。After receiving the first signal, the network device may perform demodulation and decoding processing on the first signal. For specific implementation methods, please refer to the description of demodulation and decoding processing on the first signal in Section 2, which will not be described again here.
4、在发送端为终端设备，接收端为网络设备的上行传输场景中，终端设备执行的一种通信方法：4. In an uplink transmission scenario where the sender is a terminal device and the receiver is a network device, a communication method performed by the terminal device:
图9为本申请提供的第四种通信方法的流程示意图，包括以下步骤：Figure 9 is a schematic flow chart of the fourth communication method provided by this application, including the following steps:
401，终端设备接收来自网络设备的指示信息，指示信息包括第一子载波的数量N或者第一比值。401. The terminal device receives indication information from the network device, where the indication information includes the number N of first subcarriers or the first ratio.
其中，对第一子载波的相关描述，对第一比值、第二比值等的相关描述都可以参考第1小节中对应的描述，以及对指示信息的描述可以参考第3小节中对应的描述，此处不再赘述。Among them, the related description of the first subcarrier, the related description of the first ratio, the second ratio, etc. can refer to the corresponding description in Section 1, and the description of the indication information can refer to the corresponding description in Section 3. No further details will be given here.
402，终端设备在第二子载波上向网络设备发送第一信号。402. The terminal device sends the first signal to the network device on the second subcarrier.
其中，对第二子载波的描述可以参考第1小节中对应的描述，此处不再赘述。For the description of the second subcarrier, please refer to the corresponding description in Section 1, which will not be described again here.
一种可选的实施方式中，终端设备发送第一信号之前，对数据比特进行编码调制等处理，生成第一信号，具体实施方式可以参考第1小节中对应的描述，此处不再赘述。In an optional implementation, before sending the first signal, the terminal device performs coding, modulation and other processing on the data bits to generate the first signal. For specific implementation, please refer to the corresponding description in Section 1, which will not be described again here.
为了实现本申请提供的方法中的各功能，本申请提供的装置或设备可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。本申请中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本申请各个实施例中的各功能模块可以集成在一个处理器中，也可以是单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。In order to realize each function in the method provided by this application, the device or equipment provided by this application may include a hardware structure and/or a software module to realize the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether one of the above functions is performed as a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution. The division of modules in this application is schematic and is only a logical function division. In actual implementation, there may be other division methods. In addition, each functional module in various embodiments of the present application can be integrated into a processor, or can exist physically alone, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or software function modules.
图10为本申请提供的一种通信装置的示意图。该通信装置可以包括执行如图6至图9对应的方法实施例中所描述的方法/操作/步骤/动作所一一对应的模块，该模块可以是硬件电路，也可以是软件，也可以是硬件电路结合软件实现。Figure 10 is a schematic diagram of a communication device provided by this application. The communication device may include modules that perform one-to-one correspondence with the methods/operations/steps/actions described in the method embodiments corresponding to Figures 6 to 9. The modules may be hardware circuits, software, or Hardware circuit combined with software implementation.
该通信装置1000包括通信单元1001和处理单元1002。用于实现前述实施例中终端设备或者网络设备所执行的方法。The communication device 1000 includes a communication unit 1001 and a processing unit 1002. It is used to implement the method executed by the terminal device or the network device in the previous embodiment.
一种可能的实施方式中，处理单元1002用于根据第一编码调制参数，确定第一子载波的数量。其中，第一编码调制参数用于编码调制处理，第一子载波为频域扩展子载波或预留子载波，第一子载波的数量的取值与第一编码调制参数的取值有关。通信单元1001用于在第二子载波上发送第一信号。其中，当第一 子载波的数量不为0时，第二子载波包括频域扩展子载波和频域扩展前的子载波，或者，第二子载波包括所述预留子载波和预留前的子载波。In a possible implementation, the processing unit 1002 is configured to determine the number of first subcarriers according to the first coding modulation parameter. The first coding modulation parameter is used for coding modulation processing, the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier, and the value of the number of the first subcarrier is related to the value of the first coding modulation parameter. The communication unit 1001 is configured to send the first signal on the second subcarrier. Among them, when the first When the number of subcarriers is not 0, the second subcarrier includes frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarrier includes the reserved subcarriers and subcarriers before reservation.
可选的，第一编码调制参数为调制和编码方案MCS索引，或编码码率，或调制阶数。其中，一个MCS索引对应一个编码码率和一个调制阶数。Optionally, the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order. Among them, an MCS index corresponds to a coding rate and a modulation order.
可选的，第一编码调制参数是根据用于调度当前传输的下行控制信息DCI确定的。Optionally, the first coding modulation parameter is determined based on downlink control information DCI used to schedule current transmission.
可选的，第一编码调制参数属于第一编码调制参数集合；Optionally, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值，λ 1 is greater than λ 2 , and the first ratio corresponding to λ 1 is smaller than the first ratio corresponding to λ 2 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
可选的，第一编码调制参数属于第一编码调制参数集合；Optionally, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值，λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
可选的，当第一编码调制参数的取值小于或等于第一阈值时，第一编码调制参数的取值x对应的第一比值α满足：
α＝μ1*x+μ2，Optionally, when the value of the first coding modulation parameter is less than or equal to the first threshold, the first ratio α corresponding to the value x of the first coding modulation parameter satisfies:
α=μ 1 *x+μ 2 ,
其中，μ1为负实数，μ2为正实数。Among them, μ 1 is a negative real number, and μ 2 is a positive real number.
可选的，当第一编码调制参数的取值大于第一阈值时，第一编码调制参数的取值x对应的第一比值α为第一值。Optionally, when the value of the first coded modulation parameter is greater than the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter is the first value.
可选的，处理单元1002用于将第一子载波的数量N进行取整处理，得到取整后的第一子载波数量N′，N′为正整数a的整数倍。Optionally, the processing unit 1002 is configured to round the number N of the first subcarriers to obtain the rounded number N′ of the first subcarriers, where N′ is an integer multiple of the positive integer a.
可选的，正整数a为1或12。Optional, the positive integer a is 1 or 12.
可选的，处理单元1002用于对数据比特进行编码调制处理。具体包括以下流程：根据第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率；根据编码码率对数据比特进行编码，获得编码码字；根据MCS索引对应的调制阶数对所述编码码字进行调制，获得调制符号；将调制符号经过离散傅里叶变换处理，获得频域信号；对频域信号进行循环扩展或者子载波预留处理，获得第一信号。其中，第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。Optionally, the processing unit 1002 is configured to perform encoding and modulation processing on the data bits. Specifically, the process includes the following: determining the coding rate according to the first ratio corresponding to the first coding modulation parameter or the first ratio after rounding the number of first subcarriers; encoding the data bits according to the coding rate to obtain the coding codeword; modulate the coded codeword according to the modulation order corresponding to the MCS index to obtain modulation symbols; subject the modulation symbols to discrete Fourier transform processing to obtain frequency domain signals; perform cyclic expansion or subcarriers on the frequency domain signals Set aside processing to obtain the first signal. Wherein, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded The corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
该实施方式中通信单元1001和处理单元1002的具体执行流程还可以参考图6至图9对应的方法实施例中的描述，此处不再赘述。该通信装置所实现的通信方法设计了第一子载波的数量可以随第一编码调制参数的不同而变化。例如，当频谱效率较小时，码率提升带来的编码性能损失较小，可采用更多的频域扩展子载波或预留子载波进行数据传输，从而获得更大的PAPR性能增益，也即是，在保证***的BLER性能的前提下优化发射波形的PAPR性能。For the specific execution procedures of the communication unit 1001 and the processing unit 1002 in this embodiment, reference can also be made to the descriptions in the method embodiments corresponding to Figures 6 to 9, and will not be described again here. The communication method implemented by the communication device is designed such that the number of first subcarriers can change with different first coding modulation parameters. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for data transmission, thereby obtaining greater PAPR performance gain, that is, Yes, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
另一种可能的实施方式中，处理单元1002用于根据第一编码调制参数，确定第一子载波的数量。其中，第一编码调制参数用于编码调制处理，第一子载波为频域扩展子载波或预留子载波，第一子载波的数量的取值与第一编码调制参数的取值有关。通信单元1001用于在第二子载波上接收第一信号。当第一子载波的数量不为0时，第二子载波包括频域扩展子载波和频域扩展前的子载波，或者，第二子载波包括预留子载波和预留前的子载波。In another possible implementation, the processing unit 1002 is configured to determine the number of first subcarriers according to the first coding modulation parameter. The first coding modulation parameter is used for coding modulation processing, the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier, and the value of the number of the first subcarrier is related to the value of the first coding modulation parameter. The communication unit 1001 is configured to receive the first signal on the second subcarrier. When the number of first subcarriers is not 0, the second subcarriers include frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarriers include reserved subcarriers and subcarriers before reservation.
可选的，第一编码调制参数为调制和编码方案MCS索引，或编码码率，或调制阶数。其中，一个MCS索引对应一个编码码率和一个调制阶数。Optionally, the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order. Among them, an MCS index corresponds to a coding rate and a modulation order.
可选的，第一编码调制参数属于第一编码调制参数集合；Optionally, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值，λ 1 is greater than λ 2 , and the first ratio corresponding to λ 1 is smaller than the first ratio corresponding to λ 2 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。 The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
可选的，第一编码调制参数属于第一编码调制参数集合；Optionally, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值，λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
可选的，当第一编码调制参数的取值小于或等于第一阈值时，第一编码调制参数的取值x对应的第一比值α满足：
α＝μ1*x+μ2，Optionally, when the value of the first coded modulation parameter is less than or equal to the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter satisfies:
α=μ 1 *x+μ 2 ,
其中，μ1为负实数，μ2为正实数。Among them, μ 1 is a negative real number, and μ 2 is a positive real number.
可选的，当第一编码调制参数的取值大于第一阈值时，第一编码调制参数的取值x对应的第一比值α为第一值。Optionally, when the value of the first coded modulation parameter is greater than the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter is the first value.
可选的，处理单元1002用于将第一子载波的数量N进行取整处理，得到取整后的第一子载波数量N′，N′为正整数a的整数倍。Optionally, the processing unit 1002 is configured to round the number N of the first subcarriers to obtain the rounded number N′ of the first subcarriers, where N′ is an integer multiple of the positive integer a.
可选的，正整数a为1或12。Optional, the positive integer a is 1 or 12.
可选的，处理单元1002用于接收第一信号后，对第一信号进行解调译码处理。具体包括以下流程：对第一信号进行去循环扩展或者去子载波预留处理，获得频域信号；将频域信号经过离散傅里叶逆变换处理，获得调制符号；根据MCS索引对应的调制阶数对所述调制信号进行解调，获得编码码字；根据第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率；根据编码码率对所述编码码字进行解码，获得数据比特。其中，第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。Optionally, the processing unit 1002 is configured to perform demodulation and decoding processing on the first signal after receiving the first signal. Specifically, the process includes the following: performing decyclic expansion or subcarrier reservation processing on the first signal to obtain a frequency domain signal; subjecting the frequency domain signal to inverse discrete Fourier transform processing to obtain a modulation symbol; according to the modulation order corresponding to the MCS index. Demodulate the modulated signal several times to obtain the coded codeword; determine the coding code rate according to the first ratio corresponding to the first coding modulation parameter or the corresponding first ratio after the rounding process of the number of first subcarriers; according to the coding The code rate decodes the encoded codeword to obtain data bits. Wherein, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded The corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
该实施方式中通信单元1001和处理单元1002的具体执行流程还可以参考图6至图9对应的方法实施例中的描述，此处不再赘述。该通信装置所实现的通信方法中第一子载波的数量可以随第一编码调制参数的不同而变化。例如，当频谱效率较小时，码率提升带来的编码性能损失较小，可采用更多的频域扩展子载波或预留子载波进行数据传输，从而获得更大的PAPR性能增益，也即是，在保证***的BLER性能的前提下优化发射波形的PAPR性能。For the specific execution procedures of the communication unit 1001 and the processing unit 1002 in this embodiment, reference can also be made to the descriptions in the method embodiments corresponding to Figures 6 to 9, and will not be described again here. In the communication method implemented by the communication device, the number of first subcarriers may vary with different first coding modulation parameters. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for data transmission, thereby obtaining greater PAPR performance gain, that is, Yes, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
另一种可能的实施方式中，处理单元1002用于根据第一编码调制系数，确定第一子载波的数量。通信单元1001用于向终端设备发送指示信息，指示信息包括第一子载波的数量N或者第一比值。其中，第一编码调制参数用于编码调制处理，第一子载波为频域扩展子载波或预留子载波，第一子载波的数量的取值与编码调制系数的取值有关，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。通信单元1001还用于在第二子载波上接收来自终端设备的第一信号。其中，当第一子载波的数量不为0时，第二子载波包括频域扩展子载波和频域扩展前的子载波，或者，第二子载波包括预留子载波和预留前的子载波。In another possible implementation, the processing unit 1002 is configured to determine the number of first subcarriers according to the first coded modulation coefficient. The communication unit 1001 is configured to send indication information to the terminal device, where the indication information includes the number N of first subcarriers or the first ratio. Among them, the first coding modulation parameter is used for coding modulation processing, the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier, the value of the number of the first subcarrier is related to the value of the coding modulation coefficient, and the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers. The communication unit 1001 is also configured to receive the first signal from the terminal device on the second subcarrier. Wherein, when the number of the first subcarriers is not 0, the second subcarriers include frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarriers include reserved subcarriers and subcarriers before reservation. carrier.
可选的，第一编码调制参数为调制和编码方案MCS索引，或编码码率，或调制阶数，或频谱效率。其中，一个MCS索引对应一个编码码率和一个调制阶数。Optionally, the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order, or spectrum efficiency. Among them, an MCS index corresponds to a coding rate and a modulation order.
可选的，第一编码调制参数属于第一编码调制参数集合；Optionally, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值，λ 1 is greater than λ 2 , and the first ratio corresponding to λ 1 is smaller than the first ratio corresponding to λ 2 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
可选的，第一编码调制参数属于第一编码调制参数集合；Optionally, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值，λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
可选的，当第一编码调制参数的取值小于或等于第一阈值时，第一编码调制参数的取值x对应的第一比值α满足：
α＝μ1*x+μ2， Optionally, when the value of the first coding modulation parameter is less than or equal to the first threshold, the first ratio α corresponding to the value x of the first coding modulation parameter satisfies:
α=μ 1 *x+μ 2 ,
其中，μ1为负实数，μ2为正实数。Among them, μ 1 is a negative real number, and μ 2 is a positive real number.
可选的，当第一编码调制参数的取值大于第一阈值时，第一编码调制参数的取值x对应的第一比值α为第一值。Optionally, when the value of the first coded modulation parameter is greater than the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter is the first value.
可选的，处理单元1002用于将第一子载波的数量N进行取整处理，得到取整后的第一子载波数量N′，N′为正整数a的整数倍。Optionally, the processing unit 1002 is configured to round the number N of the first subcarriers to obtain the rounded number N′ of the first subcarriers, where N′ is an integer multiple of the positive integer a.
可选的，正整数a为1或12。Optional, the positive integer a is 1 or 12.
可选的，指示信息还包括第一子载波的数量取整处理后对应的第一比值，第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。Optionally, the indication information also includes a first ratio corresponding to the number of first subcarriers after rounding. The first ratio corresponding to the number of first subcarriers after rounding is the number of frequency domain extension subcarriers after rounding. The ratio to the number of subcarriers before frequency domain expansion; or, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
可选的，处理单元1002用于对接收的第一信号进行解调译码处理。具体包括以下流程：对第一信号进行去循环扩展或者去子载波预留处理，获得频域信号；将频域信号经过离散傅里叶逆变换处理，获得调制符号；根据MCS索引对应的调制阶数对调制信号进行解调，获得编码码字；根据第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率；根据编码码率对编码码字进行解码，获得数据比特。其中，第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。Optionally, the processing unit 1002 is configured to perform demodulation and decoding processing on the received first signal. Specifically, the process includes the following: performing decyclic expansion or subcarrier reservation processing on the first signal to obtain a frequency domain signal; subjecting the frequency domain signal to inverse discrete Fourier transform processing to obtain a modulation symbol; according to the modulation order corresponding to the MCS index. Demodulate several pairs of modulated signals to obtain coded codewords; determine the coding rate according to the first ratio corresponding to the first coding modulation parameter or the corresponding first ratio after rounding the number of first subcarriers; determine the coding rate according to the coding rate Decode the encoded codeword to obtain data bits. Wherein, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded The corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
该实施方式中通信单元1001和处理单元1002的具体执行流程还可以参考图6至图9对应的方法实施例中的描述，此处不再赘述。该通信装置所实现的通信方法可以应用于网络设备向终端设备发送指示信息，终端设备根据指示信息向网络设备发送编码调制数据的上行数据传输场景中。在该传输场景中，网络设备可以直接向终端设备指示频域扩展比例或子载波预留比例，从而有利于终端设备直接根据频域扩展比例或子载波预留比例对数据比特进行编码调制处理得到第一信号。例如，当频谱效率较小时，码率提升带来的编码性能损失较小，可采用更多的频域扩展子载波或预留子载波进行编码调制处理，从而获得更大的PAPR性能增益，也即是，在保证***的BLER性能的前提下优化发射波形的PAPR性能。For the specific execution procedures of the communication unit 1001 and the processing unit 1002 in this embodiment, reference can also be made to the descriptions in the method embodiments corresponding to Figures 6 to 9, and will not be described again here. The communication method implemented by the communication device can be applied to an uplink data transmission scenario in which the network device sends instruction information to the terminal device, and the terminal device sends coded and modulated data to the network device according to the instruction information. In this transmission scenario, the network device can directly indicate the frequency domain expansion ratio or subcarrier reservation ratio to the terminal device, which facilitates the terminal device to directly encode and modulate the data bits according to the frequency domain expansion ratio or subcarrier reservation ratio to obtain The first signal. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for coding and modulation processing, thereby obtaining greater PAPR performance gain, and also That is, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
另一种可能的实施方式中，通信单元1001用于接收来自网络设备的指示信息，指示信息包括第一子载波的数量或者第一比值。其中，第一子载波为频域扩展子载波或预留子载波，第一子载波的数量是根据第一编码调制系数确定的，第一子载波的数量的取值与编码调制系数的取值有关，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。通信单元1001还用于在第二子载波上向网络设备发送第一信号。其中，当第一子载波的数量不为0时，第二子载波包括所述频域扩展子载波和频域扩展前的子载波，或者，第二子载波包括所述预留子载波和预留前的子载波。In another possible implementation, the communication unit 1001 is configured to receive indication information from the network device, where the indication information includes the number of first subcarriers or the first ratio. Among them, the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier. The number of the first subcarrier is determined based on the first coded modulation coefficient. The value of the number of the first subcarrier is the same as the value of the coded modulation coefficient. Relevantly, the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of subcarriers before reservation. The communication unit 1001 is also configured to send the first signal to the network device on the second subcarrier. Wherein, when the number of first subcarriers is not 0, the second subcarrier includes the frequency domain extension subcarrier and the subcarrier before frequency domain extension, or the second subcarrier includes the reserved subcarrier and the predetermined subcarrier. Keep the previous subcarrier.
可选的，第一编码调制参数为调制和编码方案MCS索引，或编码码率，或调制阶数，或频谱效率。其中，一个MCS索引对应一个编码码率和一个调制阶数。Optionally, the first coding modulation parameter is a modulation and coding scheme MCS index, or coding rate, or modulation order, or spectrum efficiency. Among them, an MCS index corresponds to a coding rate and a modulation order.
可选的，第一编码调制参数属于第一编码调制参数集合；Optionally, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
λ1大于λ2，λ1对应的第一比值小于λ2对应的第一比值，λ 1 is greater than λ 2 , and the first ratio corresponding to λ 1 is smaller than the first ratio corresponding to λ 2 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
可选的，第一编码调制参数属于第一编码调制参数集合；Optionally, the first coded modulation parameter belongs to the first coded modulation parameter set;
第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
λ3大于λ4，λ3对应的第一比值小于或等于λ4对应的第一比值，λ 3 is greater than λ 4 , and the first ratio corresponding to λ 3 is less than or equal to the first ratio corresponding to λ 4 ,
其中，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
可选的，当第一编码调制参数的取值小于或等于第一阈值时，第一编码调制参数的取值x对应的第一比值α满足：
α＝μ1*x+μ2，Optionally, when the value of the first coding modulation parameter is less than or equal to the first threshold, the first ratio α corresponding to the value x of the first coding modulation parameter satisfies:
α=μ 1 *x+μ 2 ,
其中，μ1为负实数，μ2为正实数。Among them, μ 1 is a negative real number, and μ 2 is a positive real number.
可选的，当第一编码调制参数的取值大于第一阈值时，第一编码调制参数的取值x对应的第一比值α为第一值。 Optionally, when the value of the first coded modulation parameter is greater than the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter is the first value.
可选的，处理单元1002用于将第一子载波的数量N进行取整处理，得到取整后的第一子载波数量N′，N′为正整数a的整数倍。Optionally, the processing unit 1002 is configured to round the number N of the first subcarriers to obtain the rounded number N′ of the first subcarriers, where N′ is an integer multiple of the positive integer a.
可选的，正整数a为1或12。Optional, the positive integer a is 1 or 12.
可选的，指示信息还包括第一子载波的数量取整处理后对应的第一比值，第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。Optionally, the indication information also includes a first ratio corresponding to the number of first subcarriers after rounding. The first ratio corresponding to the number of first subcarriers after rounding is the number of frequency domain extension subcarriers after rounding. The ratio to the number of subcarriers before frequency domain expansion; or, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
可选的，处理单元1002用于根据第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率；根据编码码率对数据比特进行编码，获得编码码字；根据MCS索引对应的调制阶数对编码码字进行调制，获得调制符号；将所述调制符号经过离散傅里叶变换处理，获得频域信号；对频域信号进行循环扩展或者子载波预留处理，获得第一信号。其中，第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。Optionally, the processing unit 1002 is configured to round the corresponding first ratio after integer processing according to the first ratio or the number of first subcarriers to determine the encoding code rate; encode the data bits according to the encoding code rate to obtain the encoding codeword; Modulate the coded codeword according to the modulation order corresponding to the MCS index to obtain the modulation symbol; subject the modulation symbol to discrete Fourier transform processing to obtain the frequency domain signal; perform cyclic expansion or subcarrier reservation processing on the frequency domain signal , get the first signal. Wherein, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the number of first subcarriers is rounded The corresponding first ratio after processing is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
该实施方式中通信单元1001和处理单元1002的具体执行流程还可以参考图6至图9对应的方法实施例中的描述，此处不再赘述。该通信装置所实现的通信方法可以应用于网络设备向终端设备发送指示信息，终端设备根据指示信息向网络设备发送编码调制数据的上行数据传输场景中。在该传输场景中，终端设备直接接收指示信息，从而获得所指示的频域扩展比例或子载波预留比例，使得终端设备直接根据频域扩展比例或子载波预留比例对数据比特进行编码调制处理得到第一信号。例如，当频谱效率较小时，码率提升带来的编码性能损失较小，可采用更多的频域扩展子载波或预留子载波进行编码调制处理，从而获得更大的PAPR性能增益，也即是，在保证***的BLER性能的前提下优化发射波形的PAPR性能。For the specific execution procedures of the communication unit 1001 and the processing unit 1002 in this embodiment, reference can also be made to the descriptions in the method embodiments corresponding to Figures 6 to 9, and will not be described again here. The communication method implemented by the communication device can be applied to an uplink data transmission scenario in which the network device sends instruction information to the terminal device, and the terminal device sends coded and modulated data to the network device according to the instruction information. In this transmission scenario, the terminal device directly receives the indication information to obtain the indicated frequency domain expansion ratio or subcarrier reservation ratio, so that the terminal device directly encodes and modulates the data bits according to the frequency domain expansion ratio or subcarrier reservation ratio. The first signal is obtained through processing. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for coding and modulation processing, thereby obtaining greater PAPR performance gain, and also That is, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
下面对包括图10所示的多个功能单元的设备进行描述。本申请所述的设备包括图10所示的多个功能单元。图11为本申请提供的一种通信设备的示意图，用于实现上述方法实施例中的通信方法。该通信设备1100也可以是芯片***。可以理解的是，该通信设备1100例如可以是终端设备，也可以是网络设备。A device including a plurality of functional units shown in FIG. 10 will be described below. The device described in this application includes multiple functional units shown in Figure 10. Figure 11 is a schematic diagram of a communication device provided by this application, used to implement the communication method in the above method embodiment. The communication device 1100 may also be a chip system. It can be understood that the communication device 1100 may be, for example, a terminal device or a network device.
其中，通信设备1100包括通信接口1101和处理器1102。通信接口1101例如可以是收发器、接口、总线、电路或者能够实现收发功能的装置。其中，通信接口1101用于通过传输介质和其它设备进行通信，从而用于设备1100可以和其它设备进行通信。处理器1102用于执行处理相关的操作。Among them, the communication device 1100 includes a communication interface 1101 and a processor 1102. The communication interface 1101 may be, for example, a transceiver, an interface, a bus, a circuit, or a device capable of implementing transceiver functions. Among them, the communication interface 1101 is used to communicate with other devices through a transmission medium, so that the device 1100 can communicate with other devices. The processor 1102 is configured to perform processing-related operations.
一种可能的实施方式中，处理器1102用于根据第一编码调制参数，确定第一子载波的数量。通信接口1101用于在第二子载波上发送第一信号。其中，第一编码调制参数用于编码调制处理，第一子载波为频域扩展子载波或预留子载波，第一子载波的数量的取值与第一编码调制参数的取值有关；当第一子载波的数量不为0时，第二子载波包括所述频域扩展子载波和频域扩展前的子载波，或者，第二子载波包括所述预留子载波和预留前的子载波。In a possible implementation, the processor 1102 is configured to determine the number of first subcarriers according to the first coding modulation parameter. The communication interface 1101 is used to send the first signal on the second subcarrier. Wherein, the first coding modulation parameter is used for coding modulation processing, the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier, and the value of the number of the first subcarrier is related to the value of the first coding modulation parameter; when When the number of first subcarriers is not 0, the second subcarrier includes the frequency domain extension subcarrier and the subcarrier before frequency domain extension, or the second subcarrier includes the reserved subcarrier and the pre-reservation subcarrier. subcarrier.
该实施方式中通信接口1101和处理器1102的具体执行流程还可以参考第一方面以及图6至图9对应的方法实施例中的描述，此处不再赘述。该通信设备所实现的通信方法中第一子载波的数量可以随第一编码调制参数的不同而变化。例如，当频谱效率较小时，码率提升带来的编码性能损失较小，可采用更多的频域扩展子载波或预留子载波进行数据传输，从而获得更大的PAPR性能增益，也即是，在保证***的BLER性能的前提下优化发射波形的PAPR性能。For the specific execution flow of the communication interface 1101 and the processor 1102 in this embodiment, reference can also be made to the descriptions in the first aspect and the method embodiments corresponding to Figures 6 to 9, and will not be described again here. The number of first subcarriers in the communication method implemented by the communication device may vary with different first coding modulation parameters. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for data transmission, thereby obtaining greater PAPR performance gain, that is, Yes, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
另一种可能的实施方式中，处理器1102用于根据第一编码调制参数，确定第一子载波的数量。其中，第一编码调制参数用于编码调制处理，第一子载波为频域扩展子载波或预留子载波，第一子载波的数量的取值与第一编码调制参数的取值有关。通信接口1101用于在第二子载波上接收第一信号。当第一子载波的数量不为0时，第二子载波包括频域扩展子载波和频域扩展前的子载波，或者，第二子载波包括预留子载波和预留前的子载波。In another possible implementation, the processor 1102 is configured to determine the number of first subcarriers according to the first coding modulation parameter. The first coding modulation parameter is used for coding modulation processing, the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier, and the value of the number of the first subcarrier is related to the value of the first coding modulation parameter. The communication interface 1101 is used to receive the first signal on the second subcarrier. When the number of the first subcarriers is not 0, the second subcarriers include frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarriers include reserved subcarriers and subcarriers before reservation.
该实施方式中通信接口1101和处理器1102的具体执行流程还可以参考第二方面以及图6至图9对应的方法实施例中的描述，此处不再赘述。该通信设备所实现的通信方法中第一子载波的数量可以随第一编码调制参数的不同而变化。例如，当频谱效率较小时，码率提升带来的编码性能损失较小，可采用更多的频域扩展子载波或预留子载波进行数据传输，从而获得更大的PAPR性能增益，也即是，在保证***的BLER性能的前提下优化发射波形的PAPR性能。For the specific execution flow of the communication interface 1101 and the processor 1102 in this embodiment, reference can also be made to the description in the second aspect and the method embodiment corresponding to Figures 6 to 9, and will not be described again here. The number of first subcarriers in the communication method implemented by the communication device may vary with different first coding modulation parameters. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for data transmission, thereby obtaining greater PAPR performance gain, that is, Yes, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
另一种可能的实施方式中，处理器1102用于根据第一编码调制系数，确定第一子载波的数量。通信接口1101用于向终端设备发送指示信息，指示信息包括第一子载波的数量N或者第一比值。其中，第一编码调制参数用于编码调制处理，第一子载波为频域扩展子载波或预留子载波，第一子载波的数量的取值 与编码调制系数的取值有关，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。通信接口1101还用于在第二子载波上接收来自终端设备的第一信号。其中，当第一子载波的数量不为0时，第二子载波包括频域扩展子载波和频域扩展前的子载波，或者，第二子载波包括预留子载波和预留前的子载波。In another possible implementation, the processor 1102 is configured to determine the number of first subcarriers according to the first coded modulation coefficient. The communication interface 1101 is used to send indication information to the terminal device, where the indication information includes the number N of first subcarriers or the first ratio. Among them, the first coding modulation parameter is used for coding modulation processing, the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier, and the value of the number of the first subcarrier is Related to the value of the coding modulation coefficient, the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers. ratio. The communication interface 1101 is also used to receive the first signal from the terminal device on the second subcarrier. Wherein, when the number of the first subcarriers is not 0, the second subcarriers include frequency domain extension subcarriers and subcarriers before frequency domain extension, or the second subcarriers include reserved subcarriers and subcarriers before reservation. carrier.
该实施方式中通信接口1101和处理器1102的具体执行流程还可以参考第三方面以及图6至图9对应的方法实施例中的描述，此处不再赘述。该通信设备所实现的通信方法可以应用于网络设备向终端设备发送指示信息，终端设备根据指示信息向网络设备发送编码调制数据的上行数据传输场景中。在该传输场景中，网络设备可以直接向终端设备指示频域扩展比例或子载波预留比例，从而有利于终端设备直接根据频域扩展比例或子载波预留比例对数据比特进行编码调制处理得到第一信号。例如，当频谱效率较小时，码率提升带来的编码性能损失较小，可采用更多的频域扩展子载波或预留子载波进行编码调制处理，从而获得更大的PAPR性能增益，也即是，在保证***的BLER性能的前提下优化发射波形的PAPR性能。For the specific execution flow of the communication interface 1101 and the processor 1102 in this embodiment, reference can also be made to the description in the third aspect and the method embodiments corresponding to Figures 6 to 9, and will not be described again here. The communication method implemented by the communication device can be applied to an uplink data transmission scenario in which the network device sends instruction information to the terminal device, and the terminal device sends coded and modulated data to the network device according to the instruction information. In this transmission scenario, the network device can directly indicate the frequency domain expansion ratio or subcarrier reservation ratio to the terminal device, which facilitates the terminal device to directly encode and modulate the data bits according to the frequency domain expansion ratio or subcarrier reservation ratio to obtain The first signal. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for coding and modulation processing, thereby obtaining greater PAPR performance gain, and also That is, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
另一种可能的实施方式中，通信接口1101用于接收来自网络设备的指示信息，指示信息包括第一子载波的数量或者第一比值。其中，第一子载波为频域扩展子载波或预留子载波，第一子载波的数量是根据第一编码调制系数确定的，第一子载波的数量的取值与编码调制系数的取值有关，第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，第一比值为预留子载波数量与预留前的子载波数量的比值。通信接口1101还用于在第二子载波上向网络设备发送第一信号。其中，当第一子载波的数量不为0时，第二子载波包括所述频域扩展子载波和频域扩展前的子载波，或者，第二子载波包括所述预留子载波和预留前的子载波。In another possible implementation, the communication interface 1101 is configured to receive indication information from the network device, where the indication information includes the number of first subcarriers or the first ratio. Among them, the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier. The number of the first subcarrier is determined based on the first coded modulation coefficient. The value of the number of the first subcarrier is the same as the value of the coded modulation coefficient. Relevantly, the first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of subcarriers before reservation. The communication interface 1101 is also used to send the first signal to the network device on the second subcarrier. Wherein, when the number of first subcarriers is not 0, the second subcarrier includes the frequency domain extension subcarrier and the subcarrier before frequency domain extension, or the second subcarrier includes the reserved subcarrier and the predetermined subcarrier. Keep the previous subcarrier.
该实施方式中通信接口1101和处理器1102的具体执行流程还可以参考第四方面以及图6至图9对应的方法实施例中的描述，此处不再赘述。该通信设备所实现的通信方法可以应用于网络设备向终端设备发送指示信息，终端设备根据指示信息向网络设备发送编码调制数据的上行数据传输场景中。在该传输场景中，终端设备直接接收指示信息，从而获得所指示的频域扩展比例或子载波预留比例，使得终端设备直接根据频域扩展比例或子载波预留比例对数据比特进行编码调制处理得到第一信号。例如，当频谱效率较小时，码率提升带来的编码性能损失较小，可采用更多的频域扩展子载波或预留子载波进行编码调制处理，从而获得更大的PAPR性能增益，也即是，在保证***的BLER性能的前提下优化发射波形的PAPR性能。For the specific execution flow of the communication interface 1101 and the processor 1102 in this embodiment, reference can also be made to the description in the fourth aspect and the method embodiments corresponding to Figures 6 to 9, and will not be described again here. The communication method implemented by the communication device can be applied to an uplink data transmission scenario in which the network device sends instruction information to the terminal device, and the terminal device sends coded and modulated data to the network device according to the instruction information. In this transmission scenario, the terminal device directly receives the indication information to obtain the indicated frequency domain expansion ratio or subcarrier reservation ratio, so that the terminal device directly encodes and modulates the data bits according to the frequency domain expansion ratio or subcarrier reservation ratio. The first signal is obtained through processing. For example, when the spectrum efficiency is small, the coding performance loss caused by the code rate increase is small, and more frequency domain extension subcarriers or reserved subcarriers can be used for coding and modulation processing, thereby obtaining greater PAPR performance gain, and also That is, the PAPR performance of the transmitted waveform is optimized while ensuring the BLER performance of the system.
可选的，该通信设备1100还可以包括至少一个存储器1103，用于存储程序指令和/或数据。一种实施方式中，存储器和处理器耦合。本申请中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器可能和存储器协同操作。处理器可能执行存储器中存储的程序指令。所述至少一个存储器和处理器集成在一起。Optionally, the communication device 1100 may also include at least one memory 1103 for storing program instructions and/or data. In one implementation, the memory is coupled to the processor. Coupling in this application is an indirect coupling or communication connection between devices, units or modules, which may be electrical, mechanical or other forms, and is used for information interaction between devices, units or modules. The processor may operate in conjunction with the memory. The processor may execute program instructions stored in memory. The at least one memory and processor are integrated together.
本申请中不限定上述通信接口、处理器以及存储器之间的具体连接介质。例如，存储器、处理器以及通信接口之间通过总线连接，总线1104在图11中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图11中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。This application does not limit the specific connection medium between the above communication interface, processor and memory. For example, the memory, processor, and communication interface are connected through a bus. The bus 1104 is represented by a thick line in FIG. 11. The connection methods between other components are only schematically illustrated and are not limiting. The bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in Figure 11, but it does not mean that there is only one bus or one type of bus.
在本申请中，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。In this application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component that can implement or execute the present application. Each method, step and logic block diagram disclosed in the application. A general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in this application can be directly implemented by a hardware processor, or executed by a combination of hardware and software modules in the processor.
在本申请中，存储器可以是非易失性存储器，比如硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等，还可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)。存储器是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。本申请中的存储器还可以是电路或者其它任意能够实现存储功能的装置，用于存储程序指令和/或数据。In this application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or it may be a volatile memory (volatile memory), such as a random access memory. Get memory (random-access memory, RAM). Memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory in this application can also be a circuit or any other device capable of realizing a storage function, used to store program instructions and/or data.
本申请提供一种通信***，该通信***包括如图6至图9对应的实施例中的终端设备和网络设备。This application provides a communication system, which includes a terminal device and a network device in the embodiments corresponding to Figures 6 to 9.
本申请提供一种计算机可读存储介质。该计算机可读存储介质存储有程序或指令。当所述程序或指令在计算机上运行时，使得计算机执行如图6至图9对应的实施例中的通信方法。This application provides a computer-readable storage medium. The computer-readable storage medium stores programs or instructions. When the program or instruction is run on the computer, the computer is caused to perform the communication method in the embodiment corresponding to FIG. 6 to FIG. 9 .
本申请中提供一种计算机程序产品。该计算机程序产品包括指令。当所述指令在计算机上运行时，使得计算机执行如图6至图9对应的实施例中的通信方法。This application provides a computer program product. The computer program product includes instructions. When the instructions are run on the computer, the computer is caused to execute the communication method in the embodiment corresponding to Figures 6 to 9.
本申请提供一种芯片或者芯片***，该芯片或者芯片***包括至少一个处理器和接口，接口和至少一个处理器通过线路互联，至少一个处理器用于运行计算机程序或指令，以执行如图6至图9对应的实施例 中的通信方法。The present application provides a chip or chip system. The chip or chip system includes at least one processor and an interface. The interface and the at least one processor are interconnected through lines. The at least one processor is used to run computer programs or instructions to execute the tasks shown in Figure 6 to Embodiment corresponding to Figure 9 communication methods.
其中，芯片中的接口可以为输入/输出接口、管脚或电路等。Among them, the interface in the chip can be an input/output interface, a pin or a circuit, etc.
上述芯片***可以是片上***(system on chip，SOC)，也可以是基带芯片等，其中基带芯片可以包括处理器、信道编码器、数字信号处理器、调制解调器和接口模块等。The above-mentioned chip system can be a system on chip (SOC), or a baseband chip, etc., where the baseband chip can include a processor, a channel encoder, a digital signal processor, a modem, an interface module, etc.
在一种实现方式中，本申请中上述描述的芯片或者芯片***还包括至少一个存储器，该至少一个存储器中存储有指令。该存储器可以为芯片内部的存储单元，例如，寄存器、缓存等，也可以是该芯片的存储单元(例如，只读存储器、随机存取存储器等)。In one implementation, the chip or chip system described above in this application further includes at least one memory, and instructions are stored in the at least one memory. The memory can be a storage unit inside the chip, such as a register, a cache, etc., or it can be a storage unit of the chip (such as a read-only memory, a random access memory, etc.).
本申请提供的技术方案可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、终端设备或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机可以存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，数字视频光盘(digital video disc，DVD))、或者半导体介质等。The technical solutions provided in this application can be implemented in whole or in part through software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in this application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a terminal device, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, digital video disc (digital video disc, DVD)), or semiconductor media, etc.
在本申请中，在无逻辑矛盾的前提下，各实施例之间可以相互引用，例如方法实施例之间的方法和/或术语可以相互引用，例如装置实施例之间的功能和/或术语可以相互引用，例如装置实施例和方法实施例之间的功能和/或术语可以相互引用。In this application, on the premise that there is no logical contradiction, the embodiments may refer to each other, for example, the methods and/or terms between the method embodiments may refer to each other, for example, the functions and/or terms between the device embodiments may refer to each other. References may be made to each other, for example functions and/or terms between apparatus embodiments and method embodiments may be referenced to each other.
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。 Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and equivalent technologies, the present application is also intended to include these modifications and variations.

Claims (44)

  1. 一种通信方法，其特征在于，包括：A communication method, characterized by including:
    根据第一编码调制参数，确定第一子载波的数量，所述第一编码调制参数用于编码调制处理，所述第一子载波为频域扩展子载波或预留子载波；Determine the number of first subcarriers according to the first coding modulation parameter, the first coding modulation parameter is used for coding modulation processing, and the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier;
    其中，所述第一子载波的数量的取值与第一编码调制参数的取值有关；Wherein, the value of the number of first subcarriers is related to the value of the first coding modulation parameter;
    在第二子载波上发送第一信号；transmitting the first signal on the second subcarrier;
    其中，当第一子载波的数量不为0时，所述第二子载波包括所述频域扩展子载波和频域扩展前的子载波，或者，所述第二子载波包括所述预留子载波和预留前的子载波。Wherein, when the number of first subcarriers is not 0, the second subcarriers include the frequency domain extension subcarriers and the subcarriers before frequency domain extension, or the second subcarriers include the reserved subcarriers and pre-reservation subcarriers.
  2. 根据权利要求1所述的方法，其特征在于，The method according to claim 1, characterized in that:
    所述第一编码调制参数为调制和编码方案MCS索引，或编码码率，或调制阶数，The first coding modulation parameter is the modulation and coding scheme MCS index, or coding rate, or modulation order,
    其中，一个MCS索引对应一个编码码率和一个调制阶数。Among them, an MCS index corresponds to a coding rate and a modulation order.
  3. 根据权利要求2所述的方法，其特征在于，The method according to claim 2, characterized in that:
    所述第一编码调制参数是根据用于调度当前传输的下行控制信息DCI确定的。The first coding modulation parameter is determined based on the downlink control information DCI used to schedule the current transmission.
  4. 根据权利要求2所述的方法，其特征在于，The method according to claim 2, characterized in that:
    所述第一编码调制参数属于第一编码调制参数集合；The first coded modulation parameter belongs to a first coded modulation parameter set;
    所述第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
    所述λ1大于所述λ2，所述λ1对应的第一比值小于所述λ2对应的第一比值，The λ 1 is greater than the λ 2 , and the first ratio corresponding to the λ 1 is smaller than the first ratio corresponding to the λ 2 ,
    其中，所述第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，所述第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  5. 根据权利要求2所述的方法，其特征在于，The method according to claim 2, characterized in that:
    所述第一编码调制参数属于第一编码调制参数集合；The first coded modulation parameter belongs to a first coded modulation parameter set;
    所述第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
    所述λ3大于所述λ4，所述λ3对应的第一比值小于或等于所述λ4对应的第一比值，The λ 3 is greater than the λ 4 , and the first ratio corresponding to the λ 3 is less than or equal to the first ratio corresponding to the λ 4 ,
    其中，所述第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，所述第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  6. 根据权利要求4或5所述的方法，其特征在于，The method according to claim 4 or 5, characterized in that,
    当所述第一编码调制参数的取值小于或等于第一阈值时，所述第一编码调制参数的取值x对应的第一比值α1满足：
    α1＝μ1*x+μ2，    When the value of the first coded modulation parameter is less than or equal to the first threshold, the first ratio α 1 corresponding to the value x of the first coded modulation parameter satisfies:
    α 1 =μ 1 *x+μ 2 ,
    其中，所述μ1为负实数，所述μ2为正实数。Wherein, the μ 1 is a negative real number, and the μ 2 is a positive real number.
  7. 根据权利要求6所述的方法，其特征在于，The method according to claim 6, characterized in that:
    当所述第一编码调制参数的取值大于所述第一阈值时，所述第一编码调制参数的取值x对应的第一比值α1为第一值。When the value of the first coded modulation parameter is greater than the first threshold, the first ratio α 1 corresponding to the value x of the first coded modulation parameter is the first value.
  8. 根据权利要求1至5任一项所述的方法，其特征在于，所述根据第一编码调制参数，确定第一子载波的数量，包括：The method according to any one of claims 1 to 5, wherein determining the number of first subcarriers according to the first coding modulation parameter includes:
    将所述第一子载波的数量N进行取整处理，得到取整后的第一子载波数量N′，The number N of the first subcarriers is rounded to obtain the rounded number N′ of the first subcarriers,
    所述N′为正整数a的整数倍。The N' is an integer multiple of the positive integer a.
  9. 根据权利要求8所述的方法，其特征在于，所述正整数a为1或12。The method according to claim 8, characterized in that the positive integer a is 1 or 12.
  10. 根据权利要求4或5所述的方法，其特征在于，所述根据第一编码调制参数，确定第一子载波的数量之后，所述方法还包括：The method according to claim 4 or 5, characterized in that, after determining the number of first subcarriers according to the first coding modulation parameter, the method further includes:
    根据所述第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率；Determine the coding code rate according to the first ratio corresponding to the first coding modulation parameter or the corresponding first ratio after rounding the number of first subcarriers;
    根据所述编码码率对数据比特进行编码，获得编码码字；Encode data bits according to the encoding code rate to obtain encoded codewords;
    根据MCS索引对应的调制阶数对所述编码码字进行调制，获得调制符号；Modulate the encoded codeword according to the modulation order corresponding to the MCS index to obtain a modulation symbol;
    将所述调制符号经过离散傅里叶变换处理，获得频域信号；Subject the modulation symbols to discrete Fourier transform processing to obtain frequency domain signals;
    对所述频域信号进行循环扩展或者子载波预留处理，获得所述第一信号； Perform cyclic expansion or subcarrier reservation processing on the frequency domain signal to obtain the first signal;
    其中，所述第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，所述第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。Wherein, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the first subcarrier The first ratio corresponding to the number after rounding is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  11. 一种通信方法，其特征在于，包括：A communication method, characterized by including:
    根据第一编码调制参数，确定第一子载波的数量，所述第一编码调制参数用于编码调制处理；所述第一子载波为频域扩展子载波或预留子载波；Determine the number of first subcarriers according to the first coding modulation parameter, which is used for coding modulation processing; the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier;
    其中，所述第一子载波的数量的取值与所述第一编码调制参数的取值有关；Wherein, the value of the number of the first subcarriers is related to the value of the first coding modulation parameter;
    在第二子载波上接收第一信号；receiving the first signal on the second subcarrier;
    其中，当第一子载波的数量不为0时，所述第二子载波包括所述频域扩展子载波和频域扩展前的子载波，或者，所述第二子载波包括所述预留子载波和预留前的子载波。Wherein, when the number of first subcarriers is not 0, the second subcarriers include the frequency domain extension subcarriers and the subcarriers before frequency domain extension, or the second subcarriers include the reserved subcarriers and pre-reservation subcarriers.
  12. 根据权利要求11所述的方法，其特征在于，The method according to claim 11, characterized in that:
    所述第一编码调制参数为调制和编码方案MCS索引，或编码码率，或调制阶数，The first coding modulation parameter is the modulation and coding scheme MCS index, or coding rate, or modulation order,
    其中，一个MCS索引对应一个编码码率和一个调制阶数。Among them, an MCS index corresponds to a coding rate and a modulation order.
  13. 根据权利要求12所述的方法，其特征在于，The method according to claim 12, characterized in that:
    所述第一编码调制参数是根据用于调度当前传输的下行控制信息DCI确定的。The first coding modulation parameter is determined based on the downlink control information DCI used to schedule the current transmission.
  14. 根据权利要求12所述的方法，其特征在于，The method according to claim 12, characterized in that:
    所述第一编码调制参数属于第一编码调制参数集合；The first coded modulation parameter belongs to a first coded modulation parameter set;
    所述第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
    所述λ1大于所述λ2，所述λ1对应的第一比值小于所述λ2对应的第一比值，The λ 1 is greater than the λ 2 , and the first ratio corresponding to the λ 1 is smaller than the first ratio corresponding to the λ 2 ,
    其中，所述第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，所述第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  15. 根据权利要求12所述的方法，其特征在于，The method according to claim 12, characterized in that:
    所述第一编码调制参数属于第一编码调制参数集合；The first coded modulation parameter belongs to a first coded modulation parameter set;
    所述第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
    所述λ3大于所述λ4，所述λ3对应的第一比值小于或等于所述λ4对应的第一比值，The λ 3 is greater than the λ 4 , and the first ratio corresponding to the λ 3 is less than or equal to the first ratio corresponding to the λ 4 ,
    其中，所述第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，所述第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  16. 根据权利要求14或15所述的方法，其特征在于，The method according to claim 14 or 15, characterized in that,
    当第一编码调制参数的取值小于或等于第一阈值时，所述第一编码调制参数的取值x对应的第一比值α满足：
    α＝μ1*x+μ2，    When the value of the first coding modulation parameter is less than or equal to the first threshold, the first ratio α corresponding to the value x of the first coding modulation parameter satisfies:
    α=μ 1 *x+μ 2 ,
    其中，所述μ1为负实数，所述μ2为正实数。Wherein, the μ 1 is a negative real number, and the μ 2 is a positive real number.
  17. 根据权利要求16所述的方法，其特征在于，The method according to claim 16, characterized in that:
    当第一编码调制参数的取值大于所述第一阈值时，所述第一编码调制参数的取值x对应的第一比值α为第一值。When the value of the first coded modulation parameter is greater than the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter is the first value.
  18. 根据权利要求11至15任一项所述的方法，其特征在于，所述根据第一编码调制参数，确定第一子载波的数量，包括：The method according to any one of claims 11 to 15, wherein determining the number of first subcarriers according to the first coding modulation parameter includes:
    将所述第一子载波的数量N进行取整处理，得到取整后的第一子载波数量N′，The number N of the first subcarriers is rounded to obtain the rounded number N′ of the first subcarriers,
    所述N′为正整数a的整数倍。The N' is an integer multiple of the positive integer a.
  19. 根据权利要求18所述的方法，其特征在于，所述正整数a为1或12。The method according to claim 18, characterized in that the positive integer a is 1 or 12.
  20. 根据权利要求14或15所述的方法，其特征在于，所述在第二子载波上接收第一信号之后，所述方法还包括：The method according to claim 14 or 15, characterized in that after receiving the first signal on the second subcarrier, the method further includes:
    对所述第一信号进行去循环扩展或者去子载波预留处理，获得频域信号；Perform decyclic expansion or subcarrier reservation processing on the first signal to obtain a frequency domain signal;
    将所述频域信号经过离散傅里叶逆变换处理，获得调制符号；Subject the frequency domain signal to inverse discrete Fourier transform processing to obtain modulation symbols;
    根据所述MCS索引对应的调制阶数对所述调制信号进行解调，获得编码码字；Demodulate the modulated signal according to the modulation order corresponding to the MCS index to obtain an encoded codeword;
    根据所述第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率；Determine the coding code rate according to the first ratio corresponding to the first coding modulation parameter or the corresponding first ratio after rounding the number of first subcarriers;
    根据所述编码码率对所述编码码字进行解码，获得数据比特； Decode the encoded codeword according to the encoding code rate to obtain data bits;
    其中，所述第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，所述第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。Wherein, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the first subcarrier The first ratio corresponding to the number after rounding is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  21. 一种通信方法，其特征在于，包括：A communication method, characterized by including:
    根据第一编码调制系数，确定第一子载波的数量，所述第一编码调制参数用于编码调制处理，所述第一子载波为频域扩展子载波或预留子载波；Determine the number of first subcarriers according to the first coding modulation coefficient, the first coding modulation parameter is used for coding modulation processing, and the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier;
    其中，所述第一子载波的数量的取值与编码调制系数的取值有关；Wherein, the value of the number of the first subcarriers is related to the value of the coding modulation coefficient;
    向终端设备发送指示信息，Send instruction information to the terminal device,
    所述指示信息包括所述第一子载波的数量或者第一比值，The indication information includes the number of the first subcarriers or the first ratio,
    所述第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，所述第一比值为预留子载波数量与预留前的子载波数量的比值；The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers;
    在第二子载波上接收来自所述终端设备的第一信号；receiving a first signal from the terminal device on a second subcarrier;
    其中，当第一子载波的数量不为0时，第二子载波包括所述频域扩展子载波和频域扩展前的子载波，或者，所述第二子载波包括所述预留子载波和预留前的子载波。Wherein, when the number of first subcarriers is not 0, the second subcarrier includes the frequency domain extension subcarrier and the subcarrier before frequency domain extension, or the second subcarrier includes the reserved subcarrier. and pre-reservation subcarriers.
  22. 根据权利要求21所述的方法，其特征在于，The method according to claim 21, characterized in that:
    所述第一编码调制系数为调制和编码方案MCS索引，或编码码率，或调制阶数，或频谱效率，The first coded modulation coefficient is the modulation and coding scheme MCS index, or coding code rate, or modulation order, or spectrum efficiency,
    其中，一个MCS索引对应一个编码码率和一个调制阶数。Among them, an MCS index corresponds to a coding rate and a modulation order.
  23. 根据权利要求22所述的方法，其特征在于，The method according to claim 22, characterized in that:
    所述第一编码调制系数属于第一编码调制系数集合；The first coded modulation coefficient belongs to a first coded modulation coefficient set;
    所述第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
    所述λ1大于所述λ2，所述λ1对应的第一比值小于所述λ2对应的第一比值，The λ 1 is greater than the λ 2 , and the first ratio corresponding to the λ 1 is smaller than the first ratio corresponding to the λ 2 ,
    其中，所述第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，所述第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  24. 根据权利要求22所述的方法，其特征在于，The method according to claim 22, characterized in that:
    所述第一编码调制系数属于第一编码调制系数集合；The first coded modulation coefficient belongs to a first coded modulation coefficient set;
    所述第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
    当所述λ3大于所述λ4时，所述λ3对应的第一比值小于或等于所述λ4对应的第一比值，When the λ 3 is greater than the λ 4 , the first ratio corresponding to the λ 3 is less than or equal to the first ratio corresponding to the λ 4 ,
    其中，所述第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，所述第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  25. 根据权利要求23或24所述的方法，其特征在于，The method according to claim 23 or 24, characterized in that,
    当第一编码调制参数的取值小于或等于第一阈值时，所述第一编码调制参数的取值x对应的第一比值α满足：
    α＝μ1*x+μ2，    When the value of the first coding modulation parameter is less than or equal to the first threshold, the first ratio α corresponding to the value x of the first coding modulation parameter satisfies:
    α=μ 1 *x+μ 2 ,
    其中，所述μ1为负实数，所述μ2为正实数。Wherein, the μ 1 is a negative real number, and the μ 2 is a positive real number.
  26. 根据权利要求25所述的方法，其特征在于，The method according to claim 25, characterized in that:
    当第一编码调制参数的取值大于所述第一阈值时，所述第一编码调制参数的取值x对应的第一比值α为第一值。When the value of the first coded modulation parameter is greater than the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter is the first value.
  27. 根据权利要求21至24任一项所述的方法，其特征在于，所述根据第一编码调制参数，确定第一子载波的数量，包括：The method according to any one of claims 21 to 24, wherein determining the number of first subcarriers according to the first coding modulation parameter includes:
    将所述第一子载波的数量N进行取整处理，得到取整后的第一子载波数量N′，The number N of the first subcarriers is rounded to obtain the rounded number N′ of the first subcarriers,
    所述N′为正整数a的整数倍。The N' is an integer multiple of the positive integer a.
  28. 根据权利要求27所述的方法，其特征在于，所述正整数a为1或12。The method according to claim 27, characterized in that the positive integer a is 1 or 12.
  29. 根据权利要求27所述的方法，其特征在于，The method according to claim 27, characterized in that:
    所述指示信息还包括第一子载波的数量取整处理后对应的第一比值，所述第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，所述第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。The indication information also includes a first ratio corresponding to the rounded number of the first subcarriers. The first ratio corresponding to the rounded number of the first subcarriers is the rounded number of frequency domain extension subcarriers. The ratio to the number of subcarriers before frequency domain expansion; or, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation. ratio.
  30. 根据权利要求23或24所述的方法，其特征在于，所述在第二子载波上接收来自所述终端设备的第一信号之后，所述方法还包括： The method according to claim 23 or 24, characterized in that, after receiving the first signal from the terminal device on the second subcarrier, the method further includes:
    对所述第一信号进行去循环扩展或者去子载波预留处理，获得频域信号；Perform decyclic expansion or subcarrier reservation processing on the first signal to obtain a frequency domain signal;
    将所述频域信号经过离散傅里叶逆变换处理，获得调制符号；Subject the frequency domain signal to inverse discrete Fourier transform processing to obtain modulation symbols;
    根据所述MCS索引对应的调制阶数对所述调制信号进行解调，获得编码码字；Demodulate the modulated signal according to the modulation order corresponding to the MCS index to obtain an encoded codeword;
    根据所述第一编码调制参数对应的第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率；Determine the coding code rate according to the first ratio corresponding to the first coding modulation parameter or the corresponding first ratio after rounding the number of first subcarriers;
    根据所述编码码率对所述编码码字进行解码，获得数据比特；Decode the encoded codeword according to the encoding code rate to obtain data bits;
    其中，所述第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，所述第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。Wherein, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the first subcarrier The first ratio corresponding to the number after rounding is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  31. 一种通信方法，其特征在于，包括：A communication method, characterized by including:
    接收来自网络设备的指示信息，所述指示信息包括第一子载波的数量或者第一比值，receiving indication information from the network device, the indication information including the number of first subcarriers or the first ratio,
    其中，所述第一子载波为频域扩展子载波或预留子载波，所述第一子载波的数量是根据第一编码调制系数确定的；Wherein, the first subcarrier is a frequency domain extension subcarrier or a reserved subcarrier, and the number of the first subcarrier is determined according to the first coding modulation coefficient;
    所述第一子载波的数量的取值与编码调制系数的取值有关；The value of the number of first subcarriers is related to the value of the coded modulation coefficient;
    所述第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，所述第一比值为预留子载波数量与预留前的子载波数量的比值；The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers;
    在第二子载波上向网络设备发送第一信号，sending the first signal to the network device on the second subcarrier,
    其中，当第一子载波的数量不为0时，所述第二子载波包括所述频域扩展子载波和频域扩展前的子载波，或者，所述第二子载波包括所述预留子载波和预留前的子载波。Wherein, when the number of first subcarriers is not 0, the second subcarriers include the frequency domain extension subcarriers and the subcarriers before frequency domain extension, or the second subcarriers include the reserved subcarriers and pre-reservation subcarriers.
  32. 根据权利要求31所述的方法，其特征在于，The method according to claim 31, characterized in that:
    所述第一编码调制系数为调制和编码方案MCS索引，或编码码率，或调制阶数，或频谱效率，The first coded modulation coefficient is the modulation and coding scheme MCS index, or coding code rate, or modulation order, or spectrum efficiency,
    其中，一个MCS索引对应一个编码码率和一个调制阶数。Among them, an MCS index corresponds to a coding rate and a modulation order.
  33. 根据权利要求32所述的方法，其特征在于，The method according to claim 32, characterized in that:
    所述第一编码调制系数属于第一编码调制系数集合；The first coded modulation coefficient belongs to a first coded modulation coefficient set;
    所述第一编码调制参数集合中至少存在两个不同的编码调制参数λ1和λ2，There are at least two different coding modulation parameters λ 1 and λ 2 in the first coding modulation parameter set,
    所述λ1大于所述λ2，所述λ1对应的第一比值小于所述λ2对应的第一比值，The λ 1 is greater than the λ 2 , and the first ratio corresponding to the λ 1 is smaller than the first ratio corresponding to the λ 2 ,
    其中，所述第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，所述第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  34. 根据权利要求32所述的方法，其特征在于，The method according to claim 32, characterized in that:
    所述第一编码调制系数属于第一编码调制系数集合；The first coded modulation coefficient belongs to a first coded modulation coefficient set;
    所述第一编码调制参数集合中任意两个不同的编码调制参数λ3和λ4，Any two different coding modulation parameters λ 3 and λ 4 in the first coding modulation parameter set,
    当所述λ3大于所述λ4时，所述λ3对应的第一比值小于或等于所述λ4对应的第一比值，When the λ 3 is greater than the λ 4 , the first ratio corresponding to the λ 3 is less than or equal to the first ratio corresponding to the λ 4 ,
    其中，所述第一比值为频域扩展子载波数量与频域扩展前的子载波数量的比值，或者，所述第一比值为预留子载波数量与预留前的子载波数量的比值。The first ratio is the ratio of the number of frequency domain extended subcarriers to the number of subcarriers before frequency domain expansion, or the first ratio is the ratio of the number of reserved subcarriers to the number of pre-reserved subcarriers.
  35. 根据权利要求33或34所述的方法，其特征在于，The method according to claim 33 or 34, characterized in that,
    当第一编码调制参数的取值小于或等于第一阈值时，所述第一编码调制参数的取值x对应的第一比值α满足：
    α＝μ1*x+μ2，    When the value of the first coding modulation parameter is less than or equal to the first threshold, the first ratio α corresponding to the value x of the first coding modulation parameter satisfies:
    α=μ 1 *x+μ 2 ,
    其中，所述μ1为负实数，所述μ2为正实数。Wherein, the μ 1 is a negative real number, and the μ 2 is a positive real number.
  36. 根据权利要求35所述的方法，其特征在于，The method according to claim 35, characterized in that:
    当第一编码调制参数的取值大于所述第一阈值时，所述第一编码调制参数的取值x对应的第一比值α为第一值。When the value of the first coded modulation parameter is greater than the first threshold, the first ratio α corresponding to the value x of the first coded modulation parameter is the first value.
  37. 根据权利要求31至34任一项所述方法，其特征在于，所述接收来自接入网设备的指示信息之后，所述方法还包括：The method according to any one of claims 31 to 34, characterized in that after receiving the indication information from the access network device, the method further includes:
    将所述第一子载波的数量N进行取整处理，得到取整后的第一子载波数量N′，The number N of the first subcarriers is rounded to obtain the rounded number N′ of the first subcarriers,
    所述N′为正整数a的整数倍。The N' is an integer multiple of the positive integer a.
  38. 根据权利要求37所述的方法，其特征在于，所述正整数a为1或12。The method according to claim 37, characterized in that the positive integer a is 1 or 12.
  39. 根据权利要求33或34所述的方法，其特征在于，所述在第二子载波上发送第一信号之前，所述 方法还包括：The method according to claim 33 or 34, characterized in that, before sending the first signal on the second subcarrier, the Methods also include:
    根据所述第一比值或者第一子载波的数量取整处理后对应的第一比值，确定编码码率；Determine the encoding code rate according to the first ratio or the corresponding first ratio after rounding the number of first subcarriers;
    根据所述编码码率对数据比特进行编码，获得编码码字；Encode data bits according to the encoding code rate to obtain encoded codewords;
    根据MCS索引对应的调制阶数对所述编码码字进行调制，获得调制符号；Modulate the encoded codeword according to the modulation order corresponding to the MCS index to obtain a modulation symbol;
    将所述调制符号经过离散傅里叶变换处理，获得频域信号；Subject the modulation symbols to discrete Fourier transform processing to obtain frequency domain signals;
    对所述频域信号进行循环扩展或者子载波预留处理，获得所述第一信号；Perform cyclic expansion or subcarrier reservation processing on the frequency domain signal to obtain the first signal;
    其中，所述第一子载波的数量取整处理后对应的第一比值为取整后的频域扩展子载波数量与频域扩展前的子载波数量的比值；或者，所述第一子载波的数量取整处理后对应的第一比值为取整后的预留子载波数量与预留前的子载波数量的比值。Wherein, the first ratio corresponding to the number of first subcarriers after rounding is the ratio of the number of frequency domain extension subcarriers after rounding to the number of subcarriers before frequency domain extension; or, the first subcarrier The first ratio corresponding to the number after rounding is the ratio of the number of reserved subcarriers after rounding to the number of subcarriers before reservation.
  40. 一种通信装置，其特征在于，包括用于执行如权利要求1至39中任一项所述的方法所采用的单元或模块。A communication device, characterized by comprising a unit or module used for executing the method according to any one of claims 1 to 39.
  41. 一种通信设备，其特征在于，包括：存储器和处理器；A communication device, characterized by including: a memory and a processor;
    所述存储器，用于存储指令；The memory is used to store instructions;
    所述处理器，用于执行所述指令，使得如权利要求1至39中任一项所述的方法被执行。The processor is configured to execute the instructions so that the method according to any one of claims 1 to 39 is executed.
  42. 一种通信***，其特征在于，包括：A communication system, characterized by including:
    发送端，用于执行如权利要求1至10或者31至39中任一项所述的方法；The sending end is used to perform the method as described in any one of claims 1 to 10 or 31 to 39;
    接收端，用于执行如权利要求11至20或者21至30中任一项所述的方法。The receiving end is configured to perform the method as described in any one of claims 11 to 20 or 21 to 30.
  43. 一种芯片，其特征在于，包括处理器和接口；A chip is characterized by including a processor and an interface;
    所述处理器用于读取指令以执行权利要求1至39中任一项所述的方法。The processor is configured to read instructions to perform the method according to any one of claims 1 to 39.
  44. 一种计算机可读存储介质，其特征在于，包括程序或指令，当所述程序或指令在计算机上运行时，如权利要求1至39中任一项所述的方法被执行。 A computer-readable storage medium, characterized in that it includes a program or instructions. When the program or instructions are run on a computer, the method according to any one of claims 1 to 39 is executed.
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