WO2024041269A1 - 一种通信方法及装置 - Google Patents
一种通信方法及装置 Download PDFInfo
- Publication number
- WO2024041269A1 WO2024041269A1 PCT/CN2023/108172 CN2023108172W WO2024041269A1 WO 2024041269 A1 WO2024041269 A1 WO 2024041269A1 CN 2023108172 W CN2023108172 W CN 2023108172W WO 2024041269 A1 WO2024041269 A1 WO 2024041269A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sequence
- signal
- shift values
- length
- frequency domain
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 90
- 238000004891 communication Methods 0.000 title claims abstract description 76
- 238000012545 processing Methods 0.000 claims description 74
- 238000004590 computer program Methods 0.000 claims description 16
- 230000006870 function Effects 0.000 description 53
- 238000013461 design Methods 0.000 description 37
- 238000010586 diagram Methods 0.000 description 20
- 238000001228 spectrum Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000013507 mapping Methods 0.000 description 6
- 238000005070 sampling Methods 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 102220008684 rs2017800 Human genes 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 102220038680 rs10401270 Human genes 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013506 data mapping Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- 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
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
-
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
- H04L27/2623—Reduction thereof by clipping
-
- 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
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/2628—Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators
-
- 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
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
- H04L27/265—Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators
Definitions
- the embodiments of the present application relate to the field of communication technology, and in particular, to a communication method and device.
- Orthogonal frequency division multiplexing (OFDM) waveform has good resistance to frequency selective fading and is widely used in communication systems. It is also the fifth generation mobile communication (5th generation, 5G) new air interface.
- OFDM waveforms in the (new radio, NR) standard.
- the OFDM waveform has a high peak to average power ratio (PAPR), and the nonlinear power amplifier at the transmitter will cause nonlinear distortion of the high PAPR signal, thus affecting the reception performance.
- PAPR peak to average power ratio
- the need to reduce the PAPR of signals, increase signal transmission power, and improve power amplifier efficiency is even more urgent.
- Carrier reservation (tone reservation, TR) technology can be used to suppress PAPR, that is, the transmitter reserves some subcarriers to carry signals that suppress PAPR.
- TR technology is used to reduce PAPR
- the receiving end needs to know the location of the subcarriers reserved by the transmitting end in order to correctly demodulate the useful signal.
- standards usually introduce a TR sequence to indicate the location of reserved subcarriers.
- the TR sequence is related to the number of inverse discrete fourier transform (IDFT) points corresponding to the signal, that is, different IDFT points need to be configured with different TR sequences to ensure PAPR suppression performance.
- IDFT inverse discrete fourier transform
- Embodiments of the present application provide a communication method and device, which can realize flexible expansion of TR sequences and reduce the storage overhead of TR sequences.
- embodiments of the present application provide a communication method, which can be executed by a first device, or by a component of the first device (such as a processor, a chip, or a chip system, etc.), or can be implemented by Logic modules or software implementation of all or part of the first device functions.
- the first device may be a terminal device, a network device, etc.
- the following description takes the first device executing this method as an example.
- the method includes:
- the first device expands the elements in the first TR sequence of length N by M times to obtain a second TR sequence, where N and M are integers greater than 0; the second TR sequence is shifted M times based on M shift values. bit, obtain M third TR sequences, among which among the M shift values, the difference between two shift values with similar values is K, K is an integer greater than 0, and K and M do not exist greater than 1 common divisor; determine a fourth TR sequence with a length of M*N based on the M third TR sequences; send a signal to the second device based on the fourth TR sequence.
- the first device can perform resource mapping on the data (or data signal) to be sent according to the subcarrier position corresponding to the fourth TR sequence to obtain a frequency domain signal, that is, map (or insert) the data into a frequency domain signal except for the fourth TR sequence.
- a frequency domain signal that is, map (or insert) the data into a frequency domain signal except for the fourth TR sequence.
- the amplitude of the subcarrier position corresponding to the fourth TR sequence is interpolated to 0 to obtain a frequency domain signal.
- the frequency domain signal is transformed by IDFT, the time domain signal can be obtained, that is, it needs to be transferred to the second device signal sent.
- the original first TR sequence can be flexibly expanded to different lengths to adapt to the need to reduce PAPR for signals with different IDFT points, and there is no need to introduce TR sequences for different IDFT points separately, which can reduce the storage overhead of the TR sequence. .
- the first device sends a signal to the second device according to the fourth TR sequence, including: the first device determines the TR frequency domain signal according to the fourth TR sequence and the number of subcarriers corresponding to the signal, where , in the TR frequency domain signal, the amplitude of the subcarrier position corresponding to the fourth TR sequence is Z, the amplitude of other subcarrier positions is 0, and Z is greater than 0; perform IDFT processing on the TR frequency domain signal to determine the time domain kernel signal; perform peak clipping processing on the signal according to the time domain kernel signal; and send the peak clipped signal to the second device.
- the method before performing IDFT processing on the TR frequency domain signal, the method further includes: weighting the TR frequency domain signal through a window function of length M.
- the first device before performing IDFT processing on the TR frequency domain signal, can also process the TR frequency domain signal through a window function of length M. Weighted processing of TR frequency domain signals can generate time domain kernel signals with different time domain characteristics to achieve different peak clipping effects.
- M shift values include: 0, -1; or, 0, +1; when M is 3, M shift values include: 0, -1, +1.
- the method further includes: the first device determines the number of IDFT points corresponding to the signal, the number of IDFT points corresponding to the first TR sequence, the length N of the first TR sequence, the largest element and the smallest element in the first TR sequence. At least one of the differences in elements determines M.
- the first device can determine the length of the TR sequence required to perform PAPR reduction processing on the signal based on the number of IDFT points corresponding to the signal, and can determine the length of the TR sequence required for PAPR reduction processing based on the number of IDFT points corresponding to the first TR sequence, the length N of the first TR sequence, At least one of the differences between the largest element and the smallest element in the first TR sequence reflects the length of the first TR sequence to determine the multiple M that needs to be extended to the first TR sequence, which is conducive to achieving better PAPR reduction. Effect.
- the method further includes: the first device sending M shift values and/or M to the second device.
- the first device can send M shift values and/or M to the second device, which is beneficial to reducing the processing overhead of the second device in determining M shift values and/or extending the first TR sequence by a multiple M .
- the method further includes: the first device receiving M shift values and/or M from the second device.
- the first device can obtain M shift values from the second device and/or extend the first TR sequence by a multiple of M, which is beneficial to reducing the time required for the first device to determine M shift values and/or The processing overhead of a multiple M of TR sequence expansion.
- the method further includes: the first device sending N to the second device; or receiving N from the second device.
- the first device or the second device can determine the length N of the original first TR sequence and then send it to the other party, which is conducive to the first device and the second device aligning their understanding of the length of the original first TR sequence, based on The original first TR sequence accurately implements signal processing.
- embodiments of the present application provide a communication method, which can be executed by a second device, or by a component of the second device (such as a processor, a chip, or a chip system, etc.), or can be implemented by Logic modules or software implementation of all or part of the second device functions.
- the second device may be a network device, a terminal device, etc. The following description takes the second device executing this method as an example.
- the method includes:
- the second device expands the elements in the first TR sequence of length N by M times to obtain a second TR sequence, where N and M are integers greater than 0; the second TR sequence is shifted M times based on M shift values. bit, obtain M third TR sequences, among which among the M shift values, the difference between two shift values with similar values is K, K is an integer greater than 0, and K and M do not exist greater than 1 common divisor; determine a fourth TR sequence with a length of M*N based on the M third TR sequences; demodulate the signal from the first device according to the fourth TR sequence.
- M shift values include: 0, -1; or, 0, +1; when M is 3, M shift values include: 0, -1, +1.
- the method further includes: the second device receives M shift values and/or M from the first device.
- the method further includes: the second device determines the number of IDFT points corresponding to the signal, the number of IDFT points corresponding to the first TR sequence, the length N of the first TR sequence, the largest element and the smallest element in the first TR sequence. At least one of the differences in elements determines M.
- the method further includes: the second device sends M shift values and/or M to the first device.
- the method further includes: the second device receiving N from the first device; or sending N to the first device.
- embodiments of the present application provide a communication device, which has the function of implementing the method in the first aspect.
- the function can be implemented by hardware, or can be implemented by hardware executing corresponding software.
- the hardware or software includes one or more modules corresponding to the above functions, such as an interface unit and a processing unit.
- the device may be a chip or integrated circuit.
- the device includes a memory and a processor.
- the memory is used to store instructions executed by the processor.
- the device can perform the method of the first aspect.
- the device may be a first device, such as a terminal device, a network device, etc.
- embodiments of the present application provide a communication device, which has the function of implementing the method in the second aspect.
- the function can be implemented by hardware, or can be implemented by hardware executing corresponding software.
- the hardware or software includes one or more modules corresponding to the above functions, such as an interface unit and a processing unit.
- the device may be a chip or integrated circuit.
- the device includes a memory and a processor.
- the memory is used to store instructions executed by the processor.
- the device can perform the method of the second aspect.
- the device may be a second device, such as a network device, a terminal device, etc.
- inventions of the present application provide a communication device.
- the communication device includes an interface circuit and a processor, and the processor and the interface circuit are coupled to each other.
- the processor is used to implement the method of the first aspect above through logic circuits or executing instructions.
- the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or to send signals from the processor to other communication devices other than the communication device. It can be understood that the interface circuit may be a transceiver or a transceiver or a transceiver or an input-output interface.
- the communication device may also include a memory for storing instructions executed by the processor or input data required for the processor to run the instructions or data generated after the processor executes the instructions.
- the memory can be a physically separate unit, or it can be coupled to the processor, or the processor can include the memory.
- inventions of the present application provide a communication device.
- the communication device includes an interface circuit and a processor, and the processor and the interface circuit are coupled to each other.
- the processor is used to implement the method of the second aspect above through logic circuits or executing instructions.
- the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or to send signals from the processor to other communication devices other than the communication device. It can be understood that the interface circuit may be a transceiver or a transceiver or a transceiver or an input-output interface.
- the communication device may also include a memory for storing instructions executed by the processor or input data required for the processor to execute the instructions or data generated after the processor executes the instructions.
- the memory can be a physically separate unit, or it can be coupled to the processor, or the processor can include the memory.
- embodiments of the present application provide a computer-readable storage medium, in which a computer program or instructions are stored. When the computer program or instructions are executed, the method of the first aspect or the second aspect can be implemented.
- the computer may be a terminal device or a network device.
- embodiments of the present application further provide a computer program product, which includes a computer program or instructions.
- a computer program product which includes a computer program or instructions.
- embodiments of the present application further provide a chip, which is coupled to a memory and used to read and execute programs or instructions stored in the memory to implement the method of the first aspect or the second aspect.
- embodiments of the present application further provide a communication system.
- the communication system includes a first device and a second device.
- the first device can implement the method of the first aspect
- the second device can implement the method of the second aspect. .
- Figure 1 is a schematic diagram of the network architecture of a communication system provided by an embodiment of the present application.
- Figure 2 is a signal processing block diagram of a transceiver end using TR to reduce PAPR provided by an embodiment of the present application
- FIG. 3 is one of the schematic diagrams of the communication method provided by the embodiment of the present application.
- Figure 4 is one of the schematic diagrams of the time domain kernel characteristics of the first TR sequence and the fourth TR sequence provided by the embodiment of the present application;
- Figure 5 is a schematic diagram of the PAPR inhibition performance of the first TR sequence and the fourth TR sequence provided by the embodiment of the present application;
- Figure 6 is a second schematic diagram of the time domain kernel characteristics of the first TR sequence and the fourth TR sequence provided by the embodiment of the present application;
- Figure 7 is the third schematic diagram of the time domain kernel characteristics of the first TR sequence and the fourth TR sequence provided by the embodiment of the present application;
- Figure 8 is the fourth schematic diagram of the time domain kernel characteristics of the first TR sequence and the fourth TR sequence provided by the embodiment of the present application;
- Figure 9 is the fifth schematic diagram of the time domain kernel characteristics of the first TR sequence and the fourth TR sequence provided by the embodiment of the present application.
- Figure 10 is a second schematic diagram of the communication method provided by the embodiment of the present application.
- Figure 11 is a schematic diagram of a communication device provided by an embodiment of the present application.
- Figure 12 is a second schematic diagram of a communication device provided by an embodiment of the present application.
- the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: 5G systems, non-terrestrial network (NTN) systems, global system of mobile communications (GSM) systems, enhanced Data rate GSM evolution (enhanced data rate for GSM evolution, EDGE) system, wideband code division multiple access (wideband code division multiple access (WCDMA) system, code division multiple access (CDMA) 2000 system, time division-synchronization code division multiple access (TD-SCDMA) system, long term evolution (long term evolution (LTE) system, narrowband internet of things (NB-IoT) system, satellite communication system, etc., and can also be applied to future communication systems, such as the sixth generation (6th generation, 6G) communication system, etc.
- NTN non-terrestrial network
- GSM global system of mobile communications
- EDGE enhanced Data rate GSM evolution
- WCDMA wideband code division multiple access
- CDMA code division multiple access
- TD-SCDMA time division-synchronization code division multiple access
- LTE long
- enhanced mobile broadband eMBB
- URLLC low-latency and high-reliability communication
- massive machine-type communications massive machine communications
- Figure 1 is a schematic diagram of the network architecture of a communication system applicable to the embodiment of the present application.
- the communication system may comprise a network device and two terminal devices (terminal device A and terminal device B), which may be mobile terminal devices and/or any other suitable device for communicating on a wireless communication system, and All can be connected to network devices. Both end devices are capable of communicating with network devices.
- Figure 1 is only a schematic diagram, and the communication system may include a larger or smaller number of network devices or terminal devices, and may also include other devices.
- the communication system may also include a wireless relay device and a wireless backhaul device (not shown in Figure 1).
- the terminal device in Figure 1 is also a schematic.
- the terminal device can also be an IoT device such as a smart water meter.
- the above-mentioned network equipment can also be called access network (AN) equipment, or radio access network (RAN) equipment. It is a type of equipment that can be deployed in a wireless access network to provide wireless communication for terminal equipment.
- Functional device or equipment can be a base station (base station, BS), node B (Node B), evolved base station (evolved NodeB, eNodeB), transmission reception point (transmission reception point, TRP), satellite, high-altitude platform or high-altitude platform station (high-attitude platform station, HAPS), the next generation base station (next generation NodeB, gNB) in the 5G system, the base station in the 6G system, the base station in other future mobile communication systems, etc.; it can also complete some functions of the base station
- a module or unit for example, can be a centralized unit (CU) or a distributed unit (DU).
- the CU here completes the functions of the base station's radio resource control protocol and packet data convergence protocol (PDCP), and can also complete the functions of the service data adaptation protocol (SDAP); DU completes the functions of the base station
- the functions of the wireless link control layer and medium access control (MAC) layer can also complete some or all of the physical layer functions.
- the network equipment can be a macro base station, a micro base station or an indoor station, or a relay station (or relay node), a donor node or an access point, etc.
- the embodiments of this application do not limit the specific technology and specific equipment form used by the network equipment. It can be understood that all or part of the functions of the network device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).
- the network equipment can include a baseband unit (BBU) and a remote radio unit (RRU).
- BBU baseband unit
- RRU remote radio unit
- the RRU and the BBU are respectively responsible for the radio frequency processing part and the baseband processing part of the network equipment.
- the difference between the BBU and the RRU is Optical fiber transmission can be used to achieve remote RRU.
- the RRU can be placed in an area with high traffic volume, and the BBU can be placed in the central computer room.
- the BBU and RRU can also be placed in the same computer room or as different components under the same rack.
- Terminal equipment can also be called terminal, user equipment (UE), mobile station (MS), mobile terminal, etc. It is a device or equipment with wireless communication functions. Terminal devices can be widely used in various scenarios, such as MTC, Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearables , intelligent transportation, smart cities, etc.
- MTC Internet of Things
- IoT Internet of Things
- virtual reality virtual reality
- augmented reality industrial control
- autonomous driving autonomous driving
- telemedicine smart grid
- smart furniture smart office
- smart wearables intelligent transportation
- smart cities etc.
- the terminal device can be a subscriber unit (subscriber unit), cellular phone (cellular phone), smart phone (smart phone), wireless data card, personal digital assistant (personal digital assistant, PDA) computer, tablet computer, wireless modem (modem), Handheld devices, laptop computers, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, MTC equipment, ground stations, etc.
- subscriber unit subscriber unit
- cellular phone cellular phone
- smart phone smart phone
- wireless data card personal digital assistant (personal digital assistant, PDA) computer
- tablet computer tablet computer
- wireless modem modem
- Handheld devices laptop computers, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, MTC equipment, ground stations, etc.
- PDA personal digital assistant
- modem wireless modem
- Network equipment and terminal equipment can be fixed-location or removable.
- Network equipment and terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the sky.
- the embodiments of this application do not limit the application scenarios of network devices and terminal devices.
- Communication between network equipment and terminal equipment, between network equipment and network equipment, and between terminal equipment and terminal equipment can be carried out through licensed spectrum, communication can also be carried out through unlicensed spectrum, or communication can be carried out through licensed spectrum and unlicensed spectrum at the same time.
- the above-mentioned devices can communicate through spectrum below 6 gigahertz (GHz), they can also communicate through spectrum above 6 GHz, or they can communicate using spectrum below 6 GHz and spectrum above 6 GHz at the same time.
- the embodiments of the present application do not limit the spectrum resources used for wireless communication.
- the functions of the network device may also be executed by modules (such as chips) in the network device, or may be executed by a control subsystem that includes the functions of the network device.
- the control subsystem here that includes network equipment functions can be the control center in the above application scenarios such as smart grid, industrial control, smart transportation, smart city, etc.
- the functions of the terminal equipment can also be performed by modules in the terminal equipment (such as chips or modems), or can be performed by devices containing the functions of the terminal equipment.
- the network device sends downlink signals or downlink information to the terminal device, and the downlink information is carried on the downlink channel;
- the terminal device sends uplink signals or uplink information to the network device, and the uplink information is carried on the uplink channel.
- FIG. 2 is a signal processing block diagram of the transceiver using TR to reduce PAPR.
- the transmitter performs resource mapping on the channel-coded and modulated data signal according to the reserved subcarrier position to obtain the frequency domain signal, which is the useful data mapping.
- the amplitude of the reserved subcarrier position is interpolated to 0, the frequency domain signal is generated by IDFT to generate an OFDM signal, and then the TR reduction PAPR operation is performed.
- the principle of PAPR reduction by TR is to use reserved subcarriers to generate a time domain kernel signal.
- the time domain kernel signal is multiplied by a coefficient and shifted, and subtracted from the OFDM signal. Peak clipping is performed to reduce the PAPR of the OFDM signal through multiple rounds of iteration.
- the OFDM signal processed by PAPR reduction is inserted into a cyclic prefix (CP) and then transmitted through the channel and received by the receiving end.
- CP cyclic prefix
- the receiving end performs CP removal, discrete fourier transform (DFT), and channel estimation compensation on the received OFDM signal to obtain the frequency domain signal. It only needs to know the position of the data subcarrier/reserved subcarrier.
- the useful frequency domain signal (signal located at the position of the data subcarrier) can be reversely mapped and demodulated without paying attention to the signal at the reserved subcarrier position.
- the data signal obtained after demodulation can be channel decoded. Get useful data.
- TR technology When TR technology is used to reduce PAPR, the transmitter and receiver need to know the location of the reserved subcarriers in order to correctly demodulate useful frequency domain signals.
- standards usually introduce a TR sequence to indicate the location of reserved subcarriers.
- the TR sequence is related to the number of IDFT points corresponding to the signal, that is, different IDFT points need to be configured with different TR sequences to ensure PAPR suppression performance.
- TR sequences are introduced separately for different IDFT points, it will cause large storage overhead and be difficult to flexibly expand.
- the present application aims to provide a communication method and device, in order to achieve flexible expansion of TR sequences and reduce the storage overhead of TR sequences.
- the embodiments of the present application will be described in detail below with reference to the accompanying drawings, where dotted lines in the drawings represent optional steps or components.
- first and second mentioned in the embodiments of this application are used to distinguish multiple objects and are not used to limit the size, content, order, timing, etc. of multiple objects. Priority or importance, etc.
- the first TR sequence and the second TR sequence do not indicate the difference in priority or importance corresponding to the two TR sequences.
- the number of nouns means “singular noun or plural noun", that is, “one or more”, unless otherwise specified.
- At least one means one or more
- plural means two or more.
- “And/or” describes the relationship between associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural.
- the character “/” generally indicates that the related objects are in an "or” relationship.
- A/B means: A or B.
- At least one of the following or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
- at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, c Can be single or multiple.
- Figure 3 is a schematic diagram of a communication method provided by an embodiment of the present application.
- the first device and the second device are used as execution subjects to schematically illustrate the method.
- the first device may be a terminal device and the second device may be a network device; or the first device may be a network device and the second device may be a terminal device and so on.
- This application does not limit the execution subject of this method.
- the first device in Figure 3 can also be a chip, chip system, or processor that can support the first device to implement the method, or can also be a device that can implement all or part of the method.
- the logic module or software of the first device function; the second device in Figure 3 can also be a chip, chip system, or processor that supports the second device to implement the method, or can realize all or part of the second device functions.
- logic modules or software includes:
- S301 The first device expands the elements in the first TR sequence of length N by M times to obtain the second TR sequence, where N and M are integers.
- a first TR sequence of length N (that is, containing N elements) may be pre-configured in the first device and the second device, that is, an original TR sequence of length N may be pre-configured.
- the TR sequences subsequently used by the first device and the second device can be obtained based on the expansion of the first TR sequence.
- the first TR sequence can be predefined through a protocol, etc., and configured in the first device and the second device; it can also be determined by the first device and then sent to the second device, or it can be determined by the second device and then sent to the first device.
- the first device may also determine the length N of the first TR sequence and then send it to the second device, or the second device may determine the length N of the first TR sequence and then send it to the first device.
- the first device and the second device The same generation method is used to obtain the first TR sequence of length N. This application does not limit the specific method by which the first device and the second device obtain the first TR sequence.
- the length of the TR sequence used to perform PAPR reduction processing on signals is related to the number of IDFT points corresponding to the signal. Different IDFT points correspond to TR sequences of different lengths to ensure PAPR suppression performance.
- the number of IDFT points corresponding to the signal can be determined based on the carrier bandwidth and sub-carrier space (SCS) of the transmitted signal.
- the carrier bandwidth of the transmitted signal is 50MHz (i.e. 50000KHz) and the SCS is 120KHz.
- the value of 50000KHz/120KHz is approximately equal to 417, and the smallest integer power of 2 greater than 417 is 512, then it can be determined that the number of IDFT points corresponding to this signal is 512. Therefore, it can also be said that the length of the TR sequence that performs PAPR reduction processing on the signal is related to the carrier bandwidth, SCS, and number of subcarriers (that is, the ratio of the carrier bandwidth to the SCS) corresponding to the signal.
- Table 1 shows a mapping relationship between the carrier bandwidth, SCS and the length L of the TR sequence.
- the first device may determine the multiple M that needs to be extended to the elements in the first TR sequence based on the ratio of L and N.
- the difference between the largest element and the smallest element in the first TR sequence for example, the largest element in the first TR sequence is 400, or the difference between the largest element and the smallest element in the first TR sequence The value is 399, and the smallest integer power of 2 greater than 399 or 400 is 512, then it can be determined that the IDFT point corresponding to the first TR sequence is 512), etc.
- One or more of the above can also reflect the first TR sequence
- the length N, the number of IDFT points corresponding to the signal can also reflect the length L of the TR sequence used to perform PAPR reduction processing on the signal.
- one or more of the IDFT points corresponding to the first TR sequence, the difference between the largest element and the smallest element in the first TR sequence, the length N of the first sequence, and the signal correspondence One or more of the number of IDFT points and the length L of the TR sequence that performs PAPR down processing on the signal is used to determine the multiple M that needs to be extended to the elements in the first TR sequence. For example, based on the ratio of the number of IDFT points corresponding to the signal and the number of IDFT points corresponding to the first TR sequence, the multiple M that needs to be expanded to the elements in the first TR sequence is determined.
- the first device can expand the elements in the first TR sequence of length N by M times according to the required expansion multiple M times to obtain the second TR sequence.
- S302 The first device shifts the second TR sequence M times according to M shift values to obtain M third TR sequences.
- the difference between two shift values with similar values is K, K is an integer greater than 0, and K and M do not have a common divisor greater than 1; that is, M shifts
- the values must be sorted from small to large.
- the difference between any two adjacent shift values is K.
- K is an integer greater than 0.
- K can be 1, 3, 5, 7, 9, etc. as a value that does not have a common divisor greater than 1 with 2; taking M as 3 as an example, then K can be 1, 2, 4, 5, 7, 8, etc. and 3 do not have a common divisor value greater than 1.
- M shift values can be 0, -1; or 0, +1, etc.; when M is 3 and K is 1, the M shift values Values can be 0, -1, +1.
- the first device determines a fourth TR sequence with a length of M*N based on M third TR sequences.
- the first device combines the obtained M third TR sequences to obtain a fourth TR with a length of M*N. sequence.
- the obtained fourth TR sequence S4 with length M*N [2 ⁇ s(0)-1, 2 ⁇ s(0), 2 ⁇ s(1)-1, 2 ⁇ s(1),...,2 ⁇ s(N-1)-1,2s(N-1)].
- S304 The first device sends a signal to the second device according to the fourth TR sequence. Accordingly, the second device receives the signal.
- the first device After the first device determines the fourth TR sequence, it can perform PAPR reduction processing on the signal that needs to be sent to the second device according to the fourth TR sequence, and send the signal that has undergone PAPR reduction processing to the second device.
- the first device can determine the TR frequency domain signal based on the fourth TR sequence and the number of subcarriers corresponding to the signal to be sent to the second device, and perform IDFT processing on the determined TR frequency domain signal. , determine the time domain kernel signal.
- the amplitude of the subcarrier position corresponding to the fourth TR sequence in the TR frequency domain signal is Z
- the amplitude of other subcarrier positions is 0, and Z is greater than 0.
- the TR frequency domain signal has subcarriers 1, 2, 11, 12, ..., 101, 102
- the amplitude of the position is 1, and the amplitude of other subcarrier positions in the TR frequency domain signal is 0.
- the first device can perform peak clipping processing on the signal that needs to be sent to the second device according to the time domain kernel signal. For example, the first device can multiply and shift the time domain kernel signal by a coefficient based on the power peak of the signal to be reduced by PAPR, and subtract the signal from the signal to be reduced by PAPR to perform peak clipping, and reduce the PAPR of the signal through multiple rounds of iterations.
- the length of the first TR sequence as N as 24, and the length of the fourth TR sequence as M*N as 48 as an example.
- the time domain kernel characteristics of the first TR sequence and the fourth TR sequence are shown in Figure 4.
- the horizontal axis in Figure 4 represents the sampling point (corresponding to the subcarrier position in the TR frequency domain signal generated based on the TR sequence), and the vertical axis represents the amplitude. It can be seen that compared with the first TR sequence, the fourth TR sequence has Better time domain characteristics, that is, the amplitude of the time domain part outside the peak value can be suppressed lower.
- Figure 5 is a schematic diagram of the PAPR suppression performance of the first TR sequence and the fourth TR sequence shown in Figure 4, in which the horizontal axis represents PAPR, and the vertical axis represents the probability that the PAPR of the signal is greater than the PAPR of the horizontal axis. It can be seen from Figure 5 that the PAPR-reduced signal through the fourth TR sequence has a lower PAPR than the PAPR-reduced signal through the first TR sequence.
- the time domain kernel characteristics of the first TR sequence and the fourth TR sequence are shown in Figure 6.
- the horizontal axis in Figure 6 represents the sampling point (corresponding to the subcarrier position in the TR frequency domain signal generated based on the TR sequence), and the vertical axis represents the amplitude. It can be seen that compared with the first TR sequence, the fourth TR sequence is also It has better time domain characteristics, that is, the amplitude of the time domain part outside the peak value can be suppressed lower.
- S305 The second device demodulates the signal from the first device according to the fourth TR sequence.
- the second device When the second device receives the signal from the first device, it can determine the reserved subcarrier position in the signal according to the fourth TR sequence, and perform resource inverse mapping and demodulation on the signal at the non-reserved subcarrier position to obtain useful The data.
- the first device may send M and/or M shift values to the second device. Take the first device sending M shift values to the second device as an example. After the second device receives the M shift values, it can determine the elements in the first TR sequence based on the number of received shift values. The expansion multiple M, and the M shift values of the second TR sequence obtained by expanding the elements in the first TR sequence M times and performing M shifts.
- both the first device and the second device that transmit and receive signals can learn the parameters corresponding to the signal, such as the corresponding IDFT points, the length of the TR sequence corresponding to the reduced PAPR, and other information.
- the second device can also After M and/or M shift values are determined, M and/or M shift values are sent to the first device to save processing resources of the first device.
- M and/or M shift values are sent to the first device to save processing resources of the first device.
- M and/or M shift values are sent to the first device to save processing resources of the first device.
- the first device sending M to the second device as an example, after the second device receives M, it can determine the multiple M by which the elements in the first TR sequence are expanded. And according to the same strategy used by the second device to determine M shift values, such as the preset mapping relationship between expansion multiples and shift values, etc., based on M, the elements in the first TR sequence can be determined by M times.
- the second TR sequence is shifted M times by M shift values.
- the TR frequency domain signal in order to meet different peak clipping processing effect requirements, can also be weighted through a window function of length M to generate time signals with different characteristics. Domain kernel signal to achieve different peak clipping processing effects.
- FIG. 7 it is a schematic diagram of the TR frequency domain signal determined based on the first TR sequence and the fourth TR sequence respectively, in which each dot in the horizontal axis Indicates a subcarrier position of the TR frequency domain signal.
- the non-arrow position indicates the amplitude of the subcarrier position is 0, the short arrow indicates the amplitude of the subcarrier position is 1/2Z, and the long arrow indicates the amplitude of the subcarrier position is Z.
- Figure 7 it can be seen from Figure 7 that by weighting the TR frequency domain signal with a window function of length M, TR frequency domain signals with different amplitudes can be obtained.
- the time domain kernel characteristics of the first and fourth TR sequences (through coefficients are [1/ 2, 1, 1/2] window function weighting processing) as shown in Figure 8.
- the horizontal axis in Figure 8 represents the sampling point (corresponding to the subcarrier position in the TR frequency domain signal generated based on the TR sequence), and the vertical axis represents the amplitude.
- the fourth TR sequence has Better time domain characteristics, that is, the amplitude of the time domain part outside the peak value can be suppressed lower; and in Figure 8, it is weighted by a window function with coefficients [1/2, 1, 1/2]
- time domain kernel characteristics of the fourth TR sequence compared to the time domain kernel characteristics of the fourth TR sequence in Figure 6 that have not been weighted by the window function with coefficients [1/2, 1, 1/2], and can achieve different The peak clipping effect.
- the time domain kernel characteristics of the first TR sequence and the fourth TR sequence corresponding to different shift values are As shown in Figure 9.
- the TR sequence (that is, the reserved subcarrier position in the TR frequency domain signal) is expanded by M times by combining the TR sequences obtained by the M shifts by M times.
- the reserved subcarrier positions in the TR frequency domain signal can be expanded by M times by using a window function of length M to perform convolution processing on the TR frequency domain signal determined based on the TR sequence.
- Figure 10 is a schematic diagram of another communication method provided by an embodiment of the present application. The method includes:
- S1001 The first device expands the elements in the first TR sequence of length N by M times to obtain the second TR sequence, where N and M are integers.
- the first device determines the first TR frequency domain signal based on the second TR sequence and the number of subcarriers corresponding to the signal.
- the amplitude of the subcarrier position corresponding to the second TR sequence is The value is Z, the amplitude of other subcarrier positions is 0, and Z is greater than 0.
- the first device performs convolution processing on the first TR frequency domain signal based on a window function of length M to obtain a second TR frequency domain signal.
- the first device sends a signal to the second device according to the second TR frequency domain signal. Accordingly, the second device receives the signal.
- S1005 The second device demodulates the signal from the first device according to the second TR frequency domain signal.
- the first device first generates the first TR frequency domain signal based on the second TR sequence whose elements are expanded M times, and passes a window function of length M, for example, the coefficient is The window function of [1/2, 1, 1/2] performs convolution processing on the first TR frequency domain signal to obtain the second TR frequency domain signal used for PAPR processing, and the signal is processed by the second TR frequency domain signal.
- Perform PAPR reduction processing For example, IDFT processing is performed on the second TR frequency domain signal to determine the time domain kernel signal, and the PAPR reduction process is performed on the signal that needs to be sent to the second device through the time domain kernel signal.
- the difference between S1005 and S305 is that the second device determines the reserved subcarrier position in the signal based on the second TR frequency domain signal, and performs resource inverse mapping and demodulation on the signal at the non-reserved subcarrier position to obtain useful data. . Specifically, it can be determined whether the position of the subcarrier is a reserved subcarrier position according to whether the amplitude of each corresponding subcarrier position in the second TR frequency domain signal is 0. If it is non-zero, it is a reserved subcarrier position.
- the first device and the second device include corresponding hardware structures and/or software modules for performing respective functions.
- the units and method steps of each example described in conjunction with the embodiments disclosed in this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software driving the hardware depends on the specific application scenarios and design constraints of the technical solution.
- Figures 11 and 12 are schematic structural diagrams of possible communication devices provided by embodiments of the present application. These communication devices can be used to implement the functions of the first device or the second device in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments.
- the communication device may be a first device or a second device, or may be a module applied to the first device or the second device. (such as chips).
- the communication device 1100 includes a processing unit 1110 and an interface unit 1120, where the interface unit 1120 may also be a transceiver unit or an input/output interface.
- the communication device 1100 may be used to implement the functions of the first device or the second device in the method embodiment shown in FIG. 3 or FIG. 10 .
- the processing unit 1110 is configured to expand the elements in the first carrier reserved TR sequence of length N by M times to obtain the second TR sequence, where N and M are integers greater than 0;
- the TR sequence is shifted M times to obtain M third TR sequences.
- the difference between two shift values with similar values is K.
- K is an integer greater than 0.
- K There is no common divisor greater than 1 with M; and based on the M third TR sequences, determine a fourth TR sequence with a length of M*N; the processing unit 1110 is also configured to send a request to the third TR sequence through the interface unit 1120 based on the fourth TR sequence. Two devices send signals.
- the processing unit 1110 when it sends a signal to the second device through the interface unit 1120 according to the fourth TR sequence, it is specifically configured to determine the TR frequency domain according to the fourth TR sequence and the number of subcarriers corresponding to the signal. signal, where, in the TR frequency domain signal, the amplitude of the subcarrier position corresponding to the fourth TR sequence is Z, the amplitude of other subcarrier positions is 0, and Z is greater than 0; perform discrete Fourier on the TR frequency domain signal Inverse leaf transform IDFT processing is performed to determine the time domain kernel signal; peak clipping processing is performed on the signal according to the time domain kernel signal; and the peak clipping processed signal is sent to the second device through the interface unit 1120.
- Inverse leaf transform IDFT processing is performed to determine the time domain kernel signal
- peak clipping processing is performed on the signal according to the time domain kernel signal
- the peak clipping processed signal is sent to the second device through the interface unit 1120.
- the processing unit 1110 before performing IDFT processing on the TR frequency domain signal, is also configured to weight the TR frequency domain signal through a window function of length M.
- M shift values include: 0, -1; or, 0, +1;
- M shift values include: 0, -1, +1.
- the processing unit 1110 is also configured to determine the number of IDFT points corresponding to the signal, the number of IDFT points corresponding to the first TR sequence, the length N of the first TR sequence, the maximum element and the minimum element in the first TR sequence. At least one of the differences determines M.
- the interface unit 1120 is also used to send M shift values and/or M to the second device.
- the interface unit 1120 is also used to receive M shift values and/or M from the second device.
- the interface unit 1120 is also used to send N to the second device; or to receive N from the second device.
- the processing unit 1110 is configured to expand the elements in the first carrier reserved TR sequence of length N by M times to obtain the second TR sequence, where N and M are integers greater than 0;
- the TR sequence is shifted M times to obtain M third TR sequences.
- the difference between two shift values with similar values is K.
- K is an integer greater than 0.
- K There is no common divisor greater than 1 with M; and based on the M third TR sequences, determine a fourth TR sequence with a length of M*N; the processing unit 1110 is also configured to receive the demodulation interface unit 1120 according to the fourth TR sequence. of the signal from the first device.
- M shift values include: 0, -1; or, 0, +1;
- M shift values include: 0, -1, +1.
- the interface unit 1120 is also configured to receive M shift values and/or M from the first device.
- the processing unit 1110 is also configured to determine the number of IDFT points corresponding to the signal, the number of IDFT points corresponding to the first TR sequence, the length N of the first TR sequence, the maximum element and the minimum element in the first TR sequence. At least one of the differences determines M.
- the interface unit 1120 is also used to send M shift values and/or M to the first device.
- the interface unit 1120 is also used to receive N from the first device; or to send N to the first device.
- the processing unit 1110 is configured to expand the elements in the first TR sequence of length N by M times to obtain a second TR sequence, where N and M are integers; determine according to the second TR sequence and the number of subcarriers corresponding to the signal.
- a first TR frequency domain signal wherein, in the first TR frequency domain signal, the amplitude of the subcarrier position corresponding to the second TR sequence is Z, the amplitudes of other subcarrier positions are 0, and Z is greater than 0; based on the length is a window function of M, performs convolution processing on the first TR frequency domain signal to obtain a second TR frequency domain signal; and sends a signal to the second device through the interface unit 1120 according to the second TR frequency domain signal.
- the processing unit 1110 is configured to expand the elements in the first TR sequence of length N by M times to obtain a second TR sequence, where N and M are integers; determine according to the second TR sequence and the number of subcarriers corresponding to the signal.
- the first TR frequency domain signal where, in the first TR frequency In the domain signal, the amplitude of the subcarrier position corresponding to the second TR sequence is Z, the amplitude of other subcarrier positions is 0, and Z is greater than 0; based on the window function of length M, the first TR frequency domain signal is Convolution processing is performed to obtain a second TR frequency domain signal; the processing unit 1110 is also configured to demodulate the signal from the first device received by the interface unit 1120 according to the second TR frequency domain signal.
- this application also provides a communication device 1200, including a processor 1210 and an interface circuit 1220.
- the processor 1210 and the interface circuit 1220 are coupled to each other.
- the interface circuit 1220 can be a transceiver, an input-output interface, an input interface, an output interface, a communication interface, etc.
- the communication device 1200 may also include a memory 1230 for storing instructions executed by the processor 1210 or input data required for the processor 1210 to run the instructions or data generated after the processor 1210 executes the instructions.
- the memory 1230 can also be integrated with the processor 1210.
- the processor 1210 can be used to implement the functions of the above-mentioned processing unit 1110, and the interface circuit 1220 can be used to implement the functions of the above-mentioned interface unit 1120.
- processor in the embodiment of the present application can be a central processing unit (CPU), or other general-purpose processor, digital signal processor (DSP), or application-specific integrated circuit (application specific integrated circuit, ASIC), logic circuit, field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
- a general-purpose processor can be a microprocessor or any conventional processor.
- the method steps in the embodiments of the present application can be implemented by hardware or by a processor executing software instructions.
- Software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory In memory, register, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well known in the art.
- An exemplary storage medium is coupled to the processor such that the processor can read information from the storage medium and write information to the storage medium.
- the storage medium can also be an integral part of the processor.
- the processor and storage media may be located in an ASIC. Additionally, the ASIC can be located in network equipment or terminal equipment. Of course, the processor and the storage medium can also exist as discrete components in network equipment or terminal equipment.
- the computer program product includes one or more computer programs or instructions.
- the computer may be a general purpose computer, a special purpose computer, a computer network, a network device, a user equipment, or other programmable device.
- the computer program or instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
- the computer program or instructions may be transmitted from a network device, terminal, A computer, server or data center transmits via wired or wireless means to another network device, terminal, computer, server or data center.
- the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media.
- the available media may be magnetic media, such as floppy disks, hard disks, and tapes; optical media, such as digital video optical disks; or semiconductor media, such as solid-state hard drives.
- the computer-readable storage medium may be volatile or nonvolatile storage media, or may include both volatile and nonvolatile types of storage media.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
本申请涉及通信技术领域,公开了一种通信方法及装置,能够实现载波预留TR序列的灵活扩展,降低TR序列的存储开销。该方法包括:第一设备将长度为N的第一TR序列中的元素扩展M倍,得到第二TR序列,其中N、M为大于0的整数;根据M个移位值对第二TR序列进行M次移位,得到M个第三TR序列,其中在M个移位值中,取值相近的两个移位值之间的差值为K,K为大于0的整数,K与M不存在大于1的公约数;根据M个第三TR序列,确定长度为M*N的第四TR序列;根据第四TR序列,向第二设备发送信号。
Description
相关申请的交叉引用
本申请要求在2022年08月26日提交中国专利局、申请号为202211031441.9、申请名称为“一种通信方法及装置”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。
本申请实施例涉及通信技术领域,尤其涉及一种通信方法及装置。
正交频分复用(orthogonal frequency division multiplexing,OFDM)波形具有较好的抗频率选择性衰落的性能,被广泛应用于通信***中,同时也是第五代移动通信(5th generation,5G)新空口(new radio,NR)标准中的波形之一。然而,OFDM波形具有较高的峰值平均功率比(peak to average power ratio,PAPR),发送端的非线性功放会导致高PAPR信号的非线性失真,从而影响接收性能。尤其是对于卫星通信等远距离通信***来说,降低信号的PAPR,提升信号的发送功率,提高功放效率的需求更为迫切。
载波预留(tone reservation,TR)技术可用作抑制PAPR,即发送端预留一些子载波用于承载抑制PAPR的信号。TR技术在用于降PAPR时,接收端需要已知发送端预留子载波的位置,才能正确解调有用信号。为了高效指示预留子载波位置,标准里通常会引入TR序列,用于表示预留子载波位置。TR序列与信号对应的离散傅里叶逆变换(inverse discrete fourier transform,IDFT)点数有关,即不同的IDFT点数需要配置不同的TR序列,以保证PAPR抑制性能。然而,如果对不同IDFT点数分别引入TR序列,将会导致较大的存储开销,且不易灵活扩展。
发明内容
本申请实施例提供一种通信方法及装置,能够实现TR序列的灵活扩展,降低TR序列的存储开销。
第一方面,本申请实施例提供一种通信方法,该方法可以由第一设备执行,也可以由第一设备的部件(例如处理器、芯片、或芯片***等)执行,还可以由能实现全部或部分第一设备功能的逻辑模块或软件实现。其中,第一设备可以为终端设备、网络设备等。以下以第一设备执行该方法为例进行说明。该方法包括:
第一设备将长度为N的第一TR序列中的元素扩展M倍,得到第二TR序列,其中N、M为大于0的整数;根据M个移位值对第二TR序列进行M次移位,得到M个第三TR序列,其中在M个移位值中,取值相近的两个移位值之间的差值为K,K为大于0的整数,K与M不存在大于1的公约数;根据M个第三TR序列,确定长度为M*N的第四TR序列;根据第四TR序列,向第二设备发送信号。
需要理解的是,第一设备可以根据第四TR序列对应的子载波位置,对待发送的数据(或数据信号)进行资源映射得到频域信号,即将数据映射(或***)到除第四TR序列对应的子载波位置以外的子载波位置,第四TR序列对应的子载波位置幅值插0得到频域信号,频域信号经过IDFT变换后即可得到时域信号,也即需要向第二设备发送的信号。
采用上述方法,可以将原始的第一TR序列灵活的扩大到不同的长度,适应对不同IDFT点数的信号降PAPR的需求,并且无需对不同IDFT点数分别引入TR序列,能够降低TR序列的存储开销。
在一种可能的设计中,第一设备根据第四TR序列,向第二设备发送信号,包括:第一设备根据第四TR序列和信号对应的子载波个数,确定TR频域信号,其中,在TR频域信号中,与第四TR序列对应的子载波位置的幅值为Z,其它子载波位置的幅值为0,Z大于0;对TR频域信号进行IDFT处理,确定时域核(kernel)信号;根据时域kernel信号,对信号进行削峰处理;向第二设备发送削峰处理后的信号。可选地,对TR频域信号进行IDFT处理之前,该方法还包括:通过长度为M的窗函数,对TR频域信号进行加权处理。
上述设计中,在对TR频域信号进行IDFT处理之前,第一设备还可以通过长度为M的窗函数对
TR频域信号进行加权处理,能够产生不同时域特性的时域kernel信号,达到不同的削峰处理效果。
在一种可能的设计中,当M为2时,M个移位值,包括:0、-1;或,0、+1;当M为3时,M个移位值,包括:0、-1、+1。
在一种可能的设计中,该方法还包括:第一设备根据信号对应的IDFT点数,以及第一TR序列对应的IDFT点数、第一TR序列的长度N、第一TR序列中最大元素与最小元素的差值中的至少一项,确定M。
上述设计中,第一设备可以根据信号对应的IDFT点数,确定对信号进行降PAPR处理所需的TR序列的长度,并可以根据第一TR序列对应的IDFT点数、第一TR序列的长度N、第一TR序列中最大元素与最小元素的差值中的至少一项反映出的第一TR序列的长度,来确定需要将第一TR序列扩展的倍数M,有利于到达更好的降PAPR的效果。
在一种可能的设计中,该方法还包括:第一设备向第二设备发送M个移位值和/或M。
上述设计中,第一设备可以向第二设备发送M个移位值和/或M,有利于降低第二设备确定M个移位值和/或将第一TR序列扩展的倍数M的处理开销。
在一种可能的设计中,该方法还包括:第一设备接收来自第二设备的M个移位值和/或M。
上述设计中,第一设备可以从第二设备处获取M个移位值和/或将第一TR序列扩展的倍数M,有利于降低第一设备确定M个移位值和/或将第一TR序列扩展的倍数M的处理开销。
在一种可能的设计中,该方法还包括:第一设备向第二设备发送N;或,接收来自第二设备的N。
上述设计中,可以由第一设备或第二设备确定原始的第一TR序列的长度N后发送给对方,有利于第一设备和第二设备对齐对原始的第一TR序列长度的理解,基于原始的第一TR序列准确的实现对信号的处理。
第二方面,本申请实施例提供一种通信方法,该方法可以由第二设备执行,也可以由第二设备的部件(例如处理器、芯片、或芯片***等)执行,还可以由能实现全部或部分第二设备功能的逻辑模块或软件实现。其中,第二设备可以为网络设备、终端设备等。以下以第二设备执行该方法为例进行说明。该方法包括:
第二设备将长度为N的第一TR序列中的元素扩展M倍,得到第二TR序列,其中N、M为大于0的整数;根据M个移位值对第二TR序列进行M次移位,得到M个第三TR序列,其中在M个移位值中,取值相近的两个移位值之间的差值为K,K为大于0的整数,K与M不存在大于1的公约数;根据M个第三TR序列,确定长度为M*N的第四TR序列;根据第四TR序列,解调来自第一设备的信号。
在一种可能的设计中,当M为2时,M个移位值,包括:0、-1;或,0、+1;当M为3时,M个移位值,包括:0、-1、+1。
在一种可能的设计中,该方法还包括:第二设备接收来自第一设备的M个移位值和/或M。
在一种可能的设计中,该方法还包括:第二设备根据信号对应的IDFT点数,以及第一TR序列对应的IDFT点数、第一TR序列的长度N、第一TR序列中最大元素与最小元素的差值中的至少一项,确定M。
在一种可能的设计中,该方法还包括:第二设备向第一设备发送M个移位值和/或M。
在一种可能的设计中,该方法还包括:第二设备接收来自第一设备的N;或,向第一设备发送N。
第三方面,本申请实施例提供一种通信装置,该装置具有实现上述第一方面中方法的功能,所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块,比如包括接口单元和处理单元。
在一个可能的设计中,该装置可以是芯片或者集成电路。
在一个可能的设计中,该装置包括存储器和处理器,存储器用于存储所述处理器执行的指令,当指令被处理器执行时,所述装置可以执行上述第一方面的方法。
在一个可能的设计中,该装置可以为第一设备,如终端设备、网络设备等。
第四方面,本申请实施例提供一种通信装置,该装置具有实现上述第二方面中方法的功能,所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块,比如包括接口单元和处理单元。
在一个可能的设计中,该装置可以是芯片或者集成电路。
在一个可能的设计中,该装置包括存储器和处理器,存储器用于存储所述处理器执行的指令,当指令被处理器执行时,所述装置可以执行上述第二方面的方法。
在一个可能的设计中,该装置可以为第二设备,如网络设备、终端设备等。
第五方面,本申请实施例提供一种通信装置,该通信装置包括接口电路和处理器,处理器和接口电路之间相互耦合。处理器通过逻辑电路或执行指令用于实现上述第一方面的方法。接口电路用于接收来自该通信装置之外的其它通信装置的信号并传输至处理器或将来自处理器的信号发送给该通信装置之外的其它通信装置。可以理解的是,接口电路可以为收发器或收发机或收发信机或输入输出接口。
可选的,通信装置还可以包括存储器,用于存储处理器执行的指令或存储处理器运行指令所需要的输入数据或存储处理器运行指令后产生的数据。存储器可以是物理上独立的单元,也可以与处理器耦合,或者处理器包括该存储器。
第六方面,本申请实施例提供一种通信装置,该通信装置包括接口电路和处理器,处理器和接口电路之间相互耦合。处理器通过逻辑电路或执行指令用于实现上述第二方面的方法。接口电路用于接收来自该通信装置之外的其它通信装置的信号并传输至处理器或将来自处理器的信号发送给该通信装置之外的其它通信装置。可以理解的是,接口电路可以为收发器或收发机或收发信机或输入输出接口。
可选的,通信装置还可以包括存储器,用于存储处理器执行的指令或存储处理器运行指令所需要的输入数据或存储处理器运行指令后产生的数据。存储器可以是物理上独立的单元,也可以与处理器耦合,或者处理器包括该存储器。
第七方面,本申请实施例提供一种计算机可读存储介质,在存储介质中存储有计算机程序或指令,当计算机程序或指令被执行时,可以实现上述第一方面或第二方面的方法。示例性,所述计算机可以为终端设备或网络设备。
第八方面,本申请实施例还提供一种计算机程序产品,包括计算机程序或指令,当计算机程序或指令被执行时,可以实现上述第一方面或第二方面的方法。
第九方面,本申请实施例还提供一种芯片,该芯片与存储器耦合,用于读取并执行存储器中存储的程序或指令,实现上述第一方面或第二方面的方法。
第十方面,本申请实施例还提供一种通信***,该通信***包括第一设备和第二设备,第一设备可以实现上述第一方面的方法,第二设备可以实现上述第二方面的方法。
上述第二方面至第十方面所能达到的技术效果请参照上述第一方面所能达到的技术效果,这里不再重复赘述。
图1为本申请实施例提供的一种通信***的网络架构示意图;
图2为本申请实施例提供的一种收发端使用TR降PAPR的信号处理框图;
图3为本申请实施例提供的通信方法示意图之一;
图4为本申请实施例提供的第一TR序列和第四TR序列时域kernel特性示意图之一;
图5为本申请实施例提供的第一TR序列和第四TR序列PAPR抑制性能示意图;
图6为本申请实施例提供的第一TR序列和第四TR序列时域kernel特性示意图之二;
图7为本申请实施例提供的第一TR序列和第四TR序列时域kernel特性示意图之三;
图8为本申请实施例提供的第一TR序列和第四TR序列时域kernel特性示意图之四;
图9为本申请实施例提供的第一TR序列和第四TR序列时域kernel特性示意图之五;
图10为本申请实施例提供的通信方法示意图之二;
图11为本申请实施例提供的通信装置示意图之一;
图12为本申请实施例提供的通信装置示意图之二。
本申请实施例的技术方案,可以应用于各种通信***,例如:5G***、非地面网络(non-terrestrial network,NTN)***、全球移动通讯(global system of 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(code division multiple access,CDMA)2000***、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)***、窄带物联网(narrow band internet of things,NB-IoT)***、卫星通信***等,还可以应用于未来的通信***,如第六代(6th generation,6G)通信***等。具体的,对于5G***,可以适用于5G***中的增强移动宽带(enhanced mobile broadband,eMBB)***、低时延高可靠通信(ultra-reliable&low-latency communication,URLLC)***、海量机器类通信(massive machine type of communication,eMTC)***等。
图1为本申请实施例适用的一种通信***的网络架构示意图。该通信***可包括网络设备和两个终端设备(终端设备A和终端设备B),这两个终端设备可以是移动终端设备和/或用于在无线通信***上通信的任意其它适合设备,且均可以与网络设备连接。这两个终端设备均能够与网络设备通信。需要理解的是,图1只是示意图,该通信***中可以包括更多数量或更少数量的网络设备或终端设备,还可以包括其它设备。例如该通信***还可以包括无线中继设备和无线回传设备(在图1中未画出)。另外,图1中的终端设备也是示意,例如终端设备也可以是智能水表等物联网设备。
上述的网络设备也可以称为接入网(access network,AN)设备,或无线接入网(radio access network,RAN)设备,是一种可以部署在无线接入网中为终端设备提供无线通信功能的装置或设备。示例的,网络设备可以是基站(base station,BS)、节点B(Node B)、演进型基站(evolved NodeB,eNodeB)、发送接收点(transmission reception point,TRP)、卫星、高空平台或高空平台站(high-attitude platform station,HAPS)、5G***中的下一代基站(next generation NodeB,gNB)、6G***中的基站、其他未来移动通信***中的基站等;也可以是完成基站部分功能的模块或单元,例如,可以是集中式单元(central unit,CU),也可以是分布式单元(distributed unit,DU)。这里的CU完成基站的无线资源控制协议和分组数据汇聚层协议(packet data convergence protocol,PDCP)的功能,还可以完成业务数据适配协议(service data adaptation protocol,SDAP)的功能;DU完成基站的无线链路控制层和介质访问控制(medium access control,MAC)层的功能,还可以完成部分物理层或全部物理层的功能,有关上述各个协议层的具体描述,可以参考第三代合作伙伴计划(3rd generation partnership project,3GPP)的相关技术规范。网络设备可以是宏基站,也可以是微基站或室内站,还可以是中继站(或中继节点)、施主节点或接入点等。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。可以理解,本申请中的网络设备的全部或部分功能也可以通过在硬件上运行的软件功能来实现,或者通过平台(例如云平台)上实例化的虚拟化功能来实现。
另外,在网络设备中可以包括基带单元(base band unit,BBU)和远端射频单元(remote radio unit,RRU),RRU与BBU分别承担网络设备的射频处理部分和基带处理部分,BBU与RRU之间可以采用光纤传输,实现RRU拉远,例如RRU可以放置于高话务量的区域,BBU可以放置于中心机房。当然BBU和RRU也可以放置在同一机房或为一个机架下的不同部件。
终端设备也可以称为终端(terminal)、用户设备(user equipment,UE)、移动台(mobile station,MS)、移动终端等,是一种具有无线通信功能的装置或设备。终端设备可以广泛应用于各种场景,例如,MTC、物联网(internet of things,IoT)、虚拟现实、增强现实、工业控制、自动驾驶、远程医疗、智能电网、智能家具、智能办公、智能穿戴、智能交通、智慧城市等。终端设备可以是用户单元(subscriber unit)、蜂窝电话(cellular phone)、智能手机(smart phone)、无线数据卡、个人数字助理(personal digital assistant,PDA)电脑、平板电脑、无线调制解调器(modem)、手持设备(handset)、膝上型电脑(laptop computer)、可穿戴设备、车辆、无人机、直升机、飞机、轮船、机器人、机械臂、智能家居设备、MTC设备、地面站等。本申请的实施例对终端设备所采用的具体技术和具体设备形态不做限定。
网络设备和终端设备可以是固定位置的,也可以是可移动的。网络设备和终端设备可以部署在陆地上,包括室内或室外、手持或车载;也可以部署在水面上;还可以部署在空中的飞机、气球和人造卫星上。本申请的实施例对网络设备和终端设备的应用场景不做限定。
网络设备和终端设备之间、网络设备和网络设备之间、终端设备和终端设备之间可以通过授权频谱进行通信,也可以通过免授权频谱进行通信,也可以同时通过授权频谱和免授权频谱进行通信。例如,上述设备之间可以通过6千兆赫(gigahertz,GHz)以下的频谱进行通信,也可以通过6GHz以上的频谱进行通信,还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对无线通信所使用的频谱资源不做限定。
在本申请的实施例中,网络设备的功能也可以由网络设备中的模块(如芯片)来执行,也可以由包含有网络设备功能的控制子***来执行。这里的包含有网络设备功能的控制子***可以是智能电网、工业控制、智能交通、智慧城市等上述应用场景中的控制中心。终端设备的功能也可以由终端设备中的模块(如芯片或调制解调器)来执行,也可以由包含有终端设备功能的装置来执行。
在本申请中,网络设备向终端设备发送下行信号或下行信息,下行信息承载在下行信道上;终端设备向网络设备发送上行信号或上行信息,上行信息承载在上行信道上。
图2为收发端使用TR降PAPR的信号处理框图,如图2所示,发送端根据预留子载波位置对经过信道编码以及调制后的数据信号进行资源映射得到频域信号,即将有用数据映射到数据子载波位置,预留子载波位置的幅值插0,频域信号经过IDFT生成OFDM信号,然后进行TR降PAPR操作。TR降PAPR的原理为用预留子载波生成时域核(kernel)信号,根据待降PAPR的OFDM信号的功率峰值,在时域kernel信号上乘以一个系数并进行移位,与OFDM信号相减进行削峰,通过多轮迭代降低OFDM信号的PAPR。对经过降PAPR处理的OFDM信号进行插循环前缀(cyclic prefix,CP)后经过信道传输被接收端接收。
接收端将接收到的OFDM信号进行去CP、离散傅里叶变换(discrete fourier transform,DFT)、以及信道估计补偿处理后得到频域信号,只需已知数据子载波/预留子载波位置,即可将有用的频域信号(位于数据子载波位置的信号)进行资源逆映射并解调,而不需要关注预留子载波位置的信号,解调后得到的数据信号经过信道译码即可得到有用的数据。
TR技术在用于降PAPR时,发送端和接收端需要已知预留子载波的位置,才能正确解调有用的频域信号。为了高效指示预留子载波位置,标准里通常会引入TR序列,用于表示预留子载波位置。TR序列与信号对应的IDFT点数有关,即不同的IDFT点数需要配置不同的TR序列,以保证PAPR抑制性能。然而,如果对不同IDFT点数分别引入TR序列,将会导致较大的存储开销,且不易灵活扩展。
基于此,本申请旨在提供一种通信方法及装置,以期实现对TR序列的灵活扩展,降低TR序列的存储开销。下面将结合附图,对本申请实施例进行详细描述,其中附图中的虚线表示可选步骤或组件。
另外,需要理解的是,本申请实施例提及“第一”、“第二”等序数词是用于对多个对象进行区分,不用于限定多个对象的大小、内容、顺序、时序、优先级或者重要程度等。例如,第一TR序列和第二TR序列,并不是表示这两个TR序列对应的优先级或者重要程度等的不同。
本申请实施例中,对于名词的数目,除非特别说明,表示“单数名词或复数名词”,即"一个或多个”。“至少一个”是指一个或者多个,“多个”是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,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的情况,其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。例如,A/B,表示:A或B。“以下至少一项(个)”或其类似表达,是指的这些项中的任意组合,包括单项(个)或复数项(个)的任意组合。例如,a,b,或c中的至少一项(个),表示:a,b,c,a和b,a和c,b和c,或a和b和c,其中a,b,c可以是单个,也可以是多个。
图3为本申请实施例提供的一种通信方法示意图,图3中以第一设备和第二设备作为执行主体来示意性说明该方法。其中第一设备可以是终端设备、第二设备可以是网络设备;或者第一设备是网络设备、第二设备是终端设备等等。本申请并不限制该方法的执行主体,例如:图3中的第一设备还可以是能支持该第一设备实现该方法的芯片、芯片***、或处理器,还可以是能实现全部或部分第一设备功能的逻辑模块或软件;图3中的第二设备也可以是支持该第二设备实现该方法的芯片、芯片***、或处理器,还可以是能实现全部或部分第二设备功能的逻辑模块或软件。该方法包括:
S301:第一设备将长度为N的第一TR序列中的元素扩展M倍,得到第二TR序列,其中N、M为整数。
在本申请实施例中,在第一设备和第二设备中可以预配置有一个长度N(即包含N个元素)的第一TR序列,也即预配置有一个长度为N的原始TR序列,第一设备和第二设备后续使用的TR序列,均可基于该第一TR序列扩展得到。其中,第一TR序列可以通过协议等预定义,并配置在第一设备和第二设备中;也可以由第一设备确定后发送给第二设备,或者由第二设备确定后发送给第一设备;还可以由第一设备确定第一TR序列的长度N后发送给第二设备,或由第二设备确定第一TR序列的长度N后发送给第一设备,第一设备和第二设备采用相同的生成方式来得到长度为N的第一TR序列,本申请对第一设备和第二设备获得第一TR序列的具体方式,不作限定。
用于对信号(如OFDM信号)进行降PAPR处理的TR序列的长度与信号对应的IDFT点数相关,不同的IDFT点数对应不同长度的TR序列,以保证PAPR抑制性能。而信号对应的IDFT点数可以根据传输信号的载波带宽和载波间隔(sub-carrier space,SCS)确定,比如传输信号的载波带宽为50MHz(即50000KHz)、SCS为120KHz,50000KHz/120KHz的值约等于417,而比417大的最小2的整数次幂是512,则可以确定该信号对应的IDFT点数为512。因此,也可以说对信号进行降PAPR处理的TR序列的长度与信号对应的载波带宽、SCS、子载波个数(即载波带宽与SCS的比值)信息相关。
表1示出了载波带宽、SCS与TR序列的长度L得到一种映射关系,如表1所示,在载波带宽为50兆赫兹(MHz)、SCS=120千赫兹(KHz)的情况下,对应TR序列的长度L为12;在载波带宽为100MHz、SCS=120KHz的情况下,对应TR序列的长度L为24;…;在载波带宽为100MHz、SCS=60KHz的情况下,对应TR序列的长度L为48。
表1
确定用于对信号进行降PAPR处理的TR序列的长度L后,第一设备可以根据L与N的比值,确定需要对第一TR序列中的元素扩展的倍数M。另外,因第一TR序列对应的IDFT点数、第一TR序列中最大元素与最小元素的差值(比如第一TR序列中最大元素为400、或第一TR序列中最大元素与最小元素的差值为399,而比399或400大的最小2的整数次幂是512,则可以确定该第一TR序列对应的IDFT点数为512)等中的一项或多项也能反映第一TR序列的长度N,信号对应的IDFT点数也能反映用于对信号进行降PAPR处理的TR序列的长度L。在本申请实施例中,还可以根据第一TR序列对应的IDFT点数、第一TR序列中最大元素与最小元素的差值、第一序列的长度N中的一项或多项,以及信号对应的IDFT点数、对信号进行降PAPR处理的TR序列的长度L中的一项或多项,来确定需要对第一TR序列中的元素扩展的倍数M。比如:根据信号对应的IDFT点数与第一TR序列对应的IDFT点数的比值,确定需要对第一TR序列中的元素扩展的倍数M。
第一设备根据需要对第一TR序列中的元素扩展的倍数M,即可将长度为N的第一TR序列中的元素扩展M倍,得到第二TR序列。作为一种示例:第一TR序列S1=[s(0),s(1),…,s(N-1)],M为2,则第二序列S2=2·S1=[2·s(0),2·s(1),…,2·s(N-1)]。例如:第一TR序列中元素s(0)为5,则该元素扩展M(M=2)倍后2·s(0)为10。
S302:第一设备根据M个移位值对第二TR序列进行M次移位,得到M个第三TR序列。
其中,M个移位值中,取值相近的两个移位值之间的差值为K,K为大于0的整数,K与M不存在大于1的公约数;也即M个移位值满足按照从小到大排序,任意相邻两个移位值的差值为K,K为大于0的整数,K与M不存在大于1的公约数。
以M为2为例,则K可以为1、3、5、7、9等与2不存在大于1的公约数的值;以M为3为例,则K可以为1、2、4、5、7、8等与3不存在大于1的公约数的值。比如:在M为2、K为1的情况下,M个移位值可以为0、-1;或为0、+1等;在M为3、K为1的情况下,M个移位值可以为0、-1、+1。
以M为2,M个移位值为0、-1,第二TR序列S2=2·S1=[2·s(0),2·s(1),…,2·s(N-1)]为例,则对应移位值0的第三TR序列S31=S2=[2·s(0),2·s(1),…,2·s(N-1)],对应移位值-1的第三TR序列S32=S2-1=[2·s(0)-1,2·s(1)-1,…,2·s(N-1)-1]。
以M为3,M个移位值为0、-1、+1,第二TR序列S2=3·S1=[3·s(0),3·s(1),…,3·s(N-1)]为例,则对应移位值0的第三TR序列S31=S2=[3·s(0),3·s(1),…,3·s(N-1)],对应移位值-1的第三TR序列S32=S2-1=[3·s(0)-1,3·s(1)-1,…,3·s(N-1)-1],对应移位值1的第三TR序列S32=S2+1=[3·s(0)+1,3·s(1)+1,…,3·s(N-1)+1]。
S303:第一设备根据M个第三TR序列,确定长度为M*N的第四TR序列。
在一种实施方式中,第一设备将得到的M个第三TR序列组合,即可得到长度为M*N的第四TR
序列。
以M为2,M个移位值为0、-1,对应移位值0的第三TR序列S31=S2=[2·s(0),2·s(1),…,2s(N-1)],对应移位值-1的第三TR序列S32=S2-1=[2·s(0)-1,2·s(1)-1,…,2·s(N-1)-1]为例,则得到的长度为M*N的第四TR序列S4=[2·s(0)-1,2·s(0),2·s(1)-1,2·s(1),…,2·s(N-1)-1,2s(N-1)]。
S304:第一设备根据第四TR序列,向第二设备发送信号。相应地,第二设备接收信号。
第一设备确定第四TR序列后,即可根据第四TR序列对需要向第二设备发送的信号进行降PAPR处理,并将经过降PAPR处理的信号发送给第二设备。
在一种实施方式中,第一设备可以根据第四TR序列,以及待发送给第二设备的信号对应的子载波个数,确定TR频域信号,并对确定的TR频域信号进行IDFT处理,确定时域kernel信号。其中,TR频域信号中与第四TR序列对应的子载波位置的幅值为Z,其它子载波位置的幅值为0,Z大于0。以Z为1,第四TR序列S4=[1,2,11,12,…,101,102]为例,则TR频域信号中子载波1,2,11,12,…,101,102位置的幅值为1,TR频域信号中其它子载波位置的幅值为0。具体的,子载波位置的幅值为Z,可以理解为子载波位置的功率为a+bi,i为虚数单位,sqrt(a^2+b^2)=Z。
得到时域kernel信号后,第一设备即可根据时域kernel信号对需要发送给第二设备的信号进行削峰处理。比如第一设备可以根据待降PAPR的信号的功率峰值,在时域kernel信号上乘以一个系数并进行移位,与待降PAPR的信号相减进行削峰,通过多轮迭代降低信号的PAPR。
以M为2,第一TR序列为长度N为24,第四TR序列的长度M*N为48为例。第一TR序列和第四TR序列时域kernel特性如图4所示。其中图4中横轴表示采样点(对应基于TR序列生成的TR频域信号中的子载波位置),纵轴表示幅值,可以看出,第四TR序列与第一TR序列相比,具有更好的时域特性,即可以把峰值之外的时域部分的幅值压得更低。
图5为图4所示的第一TR序列和第四TR序列PAPR抑制性能示意图,其中横轴表示PAPR,纵轴表示信号的PAPR大于横轴的PAPR的概率(probability)。由图5可知,通过第四TR序列降PAPR的信号的相对于通过第一TR序列降PAPR的信号具有更低的PAPR。
以M为3,第一TR序列为长度N为12,第四TR序列的长度M*N为36为例,第一TR序列和第四TR序列时域kernel特性如图6所示。其中图6中横轴表示采样点(对应基于TR序列生成的TR频域信号中的子载波位置),纵轴表示幅值,可以看出,第四TR序列与第一TR序列相比,也具有更好的时域特性,即可以把峰值之外的时域部分的幅值压得更低。
S305:第二设备根据第四TR序列,解调来自第一设备的信号。
第二设备接收到来自第一设备的信号,即可以根据第四TR序列,确定信号中的预留子载波位置,并将非预留子载波位置的信号进行资源逆映射并解调,得到有用的数据。
其中,对于第二设备确定M、M个移位值以及第四TR序列的实现,可以参照第一设备确定M、M个移位值以及第四TR序列的实现,不再进行赘述。
在一些实施中,为了节省第二设备的处理资源,第一设备在确定M和/或M个移位值后,可以将M和/或M个移位值发送给第二设备。以第一设备向第二设备发送M个移位值为例,第二设备接收到M个移位值后,即可根据接收到的移位值的数量,确定将第一TR序列中的元素扩展的倍数M,以及将第一TR序列中的元素扩展M倍后得到的第二TR序列进行M次移位的M个移位值。
通常进行信号收发的第一设备和第二设备均能获知信号对应的参数,比如对应的IDFT点数、对应降PAPR的TR序列的长度等信息,在另一些实施中,也可以由第二设备在确定M和/或M个移位值后,将M和/或M个移位值发送给第一设备,以节省第一设备的处理资源。以第一设备向第二设备发送M为例,第二设备接收到M后,即可确定将第一TR序列中的元素扩展的倍数M。并可以按照与第二设备确定M个移位值相同的策略,如预设的扩展倍数与移位值的映射关系等,根据M,确定将第一TR序列中的元素扩展M倍后得到的第二TR序列进行M次移位的M个移位值。
在一些实施中,为了满足不同的削峰处理效果需求,在对TR频域信号进行IDFT处理之前,还可以通过长度为M的窗函数对TR频域信号进行加权处理,以产生不同特性的时域kernel信号,达到不同的削峰处理效果。
以M为3,M个移位值分别为0、-1、+1,长度为M的窗函数的系数为[1/2,1,1/2]为例。如图7所示,为基于第一TR序列和基于第四TR序列分别确定的TR频域信号示意图,其中横轴中每个圆点
表示TR频域信号一个子载波位置,非箭头处表示子载波位置的幅值为0,短箭头处表示子载波位置的幅值为1/2Z,长箭头处表示子载波位置的幅值为Z。由图7可知,通过长度为M的窗函数对TR频域信号进行加权处理,可以获得幅值不同的TR频域信号。
仍以M为3,第一TR序列为长度N为12,第四TR序列的长度M*N为36为例,第一TR序列和第四TR序列时域kernel特性(经过系数为[1/2,1,1/2]的窗函数的加权处理)如图8所示。其中图8中横轴表示采样点(对应基于TR序列生成的TR频域信号中的子载波位置),纵轴表示幅值,可以看出,第四TR序列与第一TR序列相比,具有更好的时域特性,即可以把峰值之外的时域部分的幅值压得更低;并且图8中经过系数为[1/2,1,1/2]的窗函数进行加权处理的第四TR序列时域kernel特性,相对于图6中未经过系数为[1/2,1,1/2]的窗函数进行加权处理的第四TR序列时域kernel特性存在差异,可以达到不同的削峰处理效果。
另外,需要理解的是,在本申请实施例中,在同一扩展倍数M的情况,也可以通过改变M个移位值,来获得不同的时域kernel特性,达到不同的削峰处理效果。
仍以M为2,2个移位值分别为L和L+2k+1,其中L,k均为整数为例,第一TR序列和对应不同移位值的第四TR序列时域kernel特性如图9所示。其中图9中横轴表示采样点(对应基于TR序列生成的TR频域信号中的子载波位置),纵轴表示幅值,可以看出,对应L=0和K=0的两个移位值的第四TR序列,以及对应L=0和K=1的两个移位值的第四TR序列时域kernel时域特性略有不同,但相比于第一TR序列时域kernel时域特性均有提升。
上述图3的实施中主要是通过M次移位,将M次移位得到的TR序列组合,实现将TR序列(也即TR频域信号中预留子载波位置)扩展M倍的。在一些实施中,也可以通过采用长度为M的窗函数,将基于TR序列确定的TR频域信号进行卷积处理,来实现将TR频域信号中预留子载波位置扩展M倍。
图10为本申请实施例提供的又一通信方法示意图,该方法包括:
S1001:第一设备将长度为N的第一TR序列中的元素扩展M倍,得到第二TR序列,其中N、M为整数。
S1002:第一设备根据第二TR序列和信号对应的子载波个数,确定第一TR频域信号,其中,在第一TR频域信号中,与第二TR序列对应的子载波位置的幅值为Z,其它子载波位置的幅值为0,Z大于0。
S1003:第一设备基于长度为M的窗函数,对第一TR频域信号进行卷积处理,得到第二TR频域信号。
S1004:第一设备根据第二TR频域信号,向第二设备发送信号。相应地,第二设备接收信号。
S1005:第二设备根据第二TR频域信号,解调来自第一设备的信号。
上述S1001可以参照上述S301的实现,不再进行赘述。上述S1002-S1004的实现与上述S302-S304不同的是,第一设备是先基于元素扩展M倍的第二TR序列生成第一TR频域信号,并通过长度为M的窗函数,比如系数为[1/2,1,1/2]的窗函数对第一TR频域信号进行卷积处理,得到用于将PAPR处理的第二TR频域信号,并通过第二TR频域信号对信号进行降PAPR处理。比如对第二TR频域信号进行IDFT处理,确定时域kernel信号,通过时域kernel信号对需要发送给第二设备的信号进行降PAPR处理。
S1005与S305不同的是,第二设备是基于第二TR频域信号,确定信号中预留子载波位置,并将非预留子载波位置的信号进行资源逆映射并解调,得到有用的数据。具体的,可以根据第二TR频域信号中对应的每个子载波位置的幅值是否为0来确定该子载波的位置是否为预留子载波位置,非零即为预留子载波位置。
可以理解的是,为了实现上述实施例中功能,第一设备和第二设备包括了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到,结合本申请中所公开的实施例描述的各示例的单元及方法步骤,本申请能够以硬件或硬件和计算机软件相结合的形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用场景和设计约束条件。
图11和图12为本申请的实施例提供的可能的通信装置的结构示意图。这些通信装置可以用于实现上述方法实施例中第一设备或第二设备的功能,因此也能实现上述方法实施例所具备的有益效果。在一种可能的实现中,该通信装置可以是第一设备或第二设备,还可以是应用于第一设备或第二设备的模块
(如芯片)。
如图11所示,通信装置1100包括处理单元1110和接口单元1120,其中接口单元1120还可以为收发单元或输入输出接口。通信装置1100可用于实现上述图3或图10中所示的方法实施例中第一设备或第二设备的功能。
当通信装置1100用于实现图3所示的方法实施例中第一设备的功能时:
处理单元1110,用于将长度为N的第一载波预留TR序列中的元素扩展M倍,得到第二TR序列,其中N、M为大于0的整数;根据M个移位值对第二TR序列进行M次移位,得到M个第三TR序列,其中在M个移位值中,取值相近的两个移位值之间的差值为K,K为大于0的整数,K与M不存在大于1的公约数;以及根据M个第三TR序列,确定长度为M*N的第四TR序列;处理单元1110,还用于根据第四TR序列,通过接口单元1120向第二设备发送信号。
在一种可能的设计中,处理单元1110根据第四TR序列,通过接口单元1120向第二设备发送信号时,具体用于根据第四TR序列和信号对应的子载波个数,确定TR频域信号,其中,在TR频域信号中,与第四TR序列对应的子载波位置的幅值为Z,其它子载波位置的幅值为0,Z大于0;对TR频域信号进行离散傅里叶逆变换IDFT处理,确定时域核kernel信号;根据时域kernel信号,对信号进行削峰处理;以及通过接口单元1120向第二设备发送削峰处理后的信号。
在一种可能的设计中,处理单元1110对TR频域信号进行IDFT处理之前,还用于通过长度为M的窗函数,对TR频域信号进行加权处理。
在一种可能的设计中,当M为2时,M个移位值,包括:0、-1;或,0、+1;
当M为3时,M个移位值,包括:0、-1、+1。
在一种可能的设计中,处理单元1110,还用于根据信号对应的IDFT点数,以及第一TR序列对应的IDFT点数、第一TR序列的长度N、第一TR序列中最大元素与最小元素的差值中的至少一项,确定M。
在一种可能的设计中,接口单元1120,还用于向第二设备发送M个移位值和/或M。
在一种可能的设计中,接口单元1120,还用于接收来自第二设备的M个移位值和/或M。
在一种可能的设计中,接口单元1120,还用于向第二设备发送N;或,接收来自第二设备的N。
当通信装置1100用于实现图3所示的方法实施例中第二设备的功能时:
处理单元1110,用于将长度为N的第一载波预留TR序列中的元素扩展M倍,得到第二TR序列,其中N、M为大于0的整数;根据M个移位值对第二TR序列进行M次移位,得到M个第三TR序列,其中在M个移位值中,取值相近的两个移位值之间的差值为K,K为大于0的整数,K与M不存在大于1的公约数;以及根据M个第三TR序列,确定长度为M*N的第四TR序列;处理单元1110,还用于根据第四TR序列,解调接口单元1120接收的来自第一设备的信号。
在一种可能的设计中,当M为2时,M个移位值,包括:0、-1;或,0、+1;
当M为3时,M个移位值,包括:0、-1、+1。
在一种可能的设计中,接口单元1120,还用于接收来自第一设备的M个移位值和/或M。
在一种可能的设计中,处理单元1110,还用于根据信号对应的IDFT点数,以及第一TR序列对应的IDFT点数、第一TR序列的长度N、第一TR序列中最大元素与最小元素的差值中的至少一项,确定M。
在一种可能的设计中,接口单元1120,还用于向第一设备发送M个移位值和/或M。
在一种可能的设计中,接口单元1120,还用于接收来自第一设备的N;或,向第一设备发送N。
当通信装置1100用于实现图10所示的方法实施例中第一设备的功能时:
处理单元1110,用于将长度为N的第一TR序列中的元素扩展M倍,得到第二TR序列,其中N、M为整数;根据第二TR序列和信号对应的子载波个数,确定第一TR频域信号,其中,在第一TR频域信号中,与第二TR序列对应的子载波位置的幅值为Z,其它子载波位置的幅值为0,Z大于0;基于长度为M的窗函数,对第一TR频域信号进行卷积处理,得到第二TR频域信号;以及根据第二TR频域信号,通过接口单元1120向第二设备发送信号。
当通信装置1100用于实现图10所示的方法实施例中第二设备的功能时:
处理单元1110,用于将长度为N的第一TR序列中的元素扩展M倍,得到第二TR序列,其中N、M为整数;根据第二TR序列和信号对应的子载波个数,确定第一TR频域信号,其中,在第一TR频
域信号中,与第二TR序列对应的子载波位置的幅值为Z,其它子载波位置的幅值为0,Z大于0;基于长度为M的窗函数,对第一TR频域信号进行卷积处理,得到第二TR频域信号;处理单元1110还用于根据第二TR频域信号,解调接口单元1120接收的来自第一设备的信号。
如图12所示,本申请还提供一种通信装置1200,包括处理器1210和接口电路1220。处理器1210和接口电路1220之间相互耦合。可以理解的是,接口电路1220可以为收发器、输入输出接口、输入接口、输出接口、通信接口等。可选的,通信装置1200还可以包括存储器1230,用于存储处理器1210执行的指令或存储处理器1210运行指令所需要的输入数据或存储处理器1210运行指令后产生的数据。可选的,存储器1230还可以和处理器1210集成在一起。
当通信装置1200用于实现图3或图10所示的方法时,处理器1210可以用于实现上述处理单元1110的功能,接口电路1220可以用于实现上述接口单元1120的功能。
可以理解的是,本申请的实施例中的处理器可以是中央处理单元(central processing unit,CPU),还可以是其它通用处理器、数字信号处理器(digital signal processor,DSP)、专用集成电路(application specific integrated circuit,ASIC)、逻辑电路、现场可编程门阵列(field programmable gate array,FPGA)或者其它可编程逻辑器件、晶体管逻辑器件,硬件部件或者其任意组合。通用处理器可以是微处理器,也可以是任何常规的处理器。
本申请的实施例中的方法步骤可以通过硬件的方式来实现,也可以由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成,软件模块可以被存放于随机存取存储器、闪存、只读存储器、可编程只读存储器、可擦除可编程只读存储器、电可擦除可编程只读存储器、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器,从而使处理器能够从该存储介质读取信息,且可向该存储介质写入信息。当然,存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外,该ASIC可以位于网络设备或终端设备中。当然,处理器和存储介质也可以作为分立组件存在于网络设备或终端设备中。
在上述实施例中,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程序或指令。在计算机上加载和执行所述计算机程序或指令时,全部或部分地执行本申请实施例所述的流程或功能。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、用户设备或者其它可编程装置。所述计算机程序或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,所述计算机程序或指令可以从一个网络设备、终端、计算机、服务器或数据中心通过有线或无线方式向另一个网络设备、终端、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能够存取的任何可用介质或者是集成一个或多个可用介质的服务器、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;也可以是光介质,例如,数字视频光盘;还可以是半导体介质,例如,固态硬盘。该计算机可读存储介质可以是易失性或非易失性存储介质,或可包括易失性和非易失性两种类型的存储介质。
在本申请的各个实施例中,如果没有特殊说明以及逻辑冲突,不同的实施例之间的术语和/或描述具有一致性、且可以相互引用,不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
另外,需要理解,在本申请实施例中,“示例的”一词用于表示作例子、例证或说明。本申请中被描述为“示例”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。确切而言,使用示例的一词旨在以具体方式呈现概念。
可以理解的是,在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分,并不用来限制本申请的实施例的范围。上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定。
Claims (32)
- 一种通信方法,应用于第一设备,其特征在于,包括:将长度为N的第一载波预留TR序列中的元素扩展M倍,得到第二TR序列,其中N、M为大于0的整数;根据M个移位值对所述第二TR序列进行M次移位,得到M个第三TR序列,其中在所述M个移位值中,取值相近的两个移位值之间的差值为K,K为大于0的整数,K与M不存在大于1的公约数;根据所述M个第三TR序列,确定长度为M*N的第四TR序列;根据所述第四TR序列,向第二设备发送信号。
- 如权利要求1所述的方法,其特征在于,所述根据所述第四TR序列,向第二设备发送信号,包括:根据所述第四TR序列和所述信号对应的子载波个数,确定TR频域信号,其中,在所述TR频域信号中,与所述第四TR序列对应的子载波位置的幅值为Z,其它子载波位置的幅值为0,Z大于0;对所述TR频域信号进行离散傅里叶逆变换IDFT处理,确定时域核kernel信号;根据所述时域kernel信号,对所述信号进行削峰处理;向所述第二设备发送所述削峰处理后的信号。
- 如权利要求2所述的方法,其特征在于,对所述TR频域信号进行IDFT处理之前,所述方法还包括:通过长度为M的窗函数,对所述TR频域信号进行加权处理。
- 如权利要求1-3中任一项所述的方法,其特征在于,当所述M为2时,所述M个移位值,包括:0、-1;或,0、+1;当所述M为3时,所述M个移位值,包括:0、-1、+1。
- 如权利要求1-4中任一项所述的方法,其特征在于,所述方法还包括:根据所述信号对应的IDFT点数,以及所述第一TR序列对应的IDFT点数、所述第一TR序列的长度N、所述第一TR序列中最大元素与最小元素的差值中的至少一项,确定所述M。
- 如权利要求1-5中任一项所述的方法,其特征在于,所述方法还包括:向所述第二设备发送所述M个移位值和/或所述M。
- 如权利要求1-4中任一项所述的方法,其特征在于,所述方法还包括:接收来自所述第二设备的所述M个移位值和/或所述M。
- 如权利要求1-7中任一项所述的方法,其特征在于,所述方法还包括:向所述第二设备发送所述N;或,接收来自所述第二设备的所述N。
- 一种通信方法,应用于第二设备,其特征在于,包括:将长度为N的第一载波预留TR序列中的元素扩展M倍,得到第二TR序列,其中N、M为大于0的整数;根据M个移位值对所述第二TR序列进行M次移位,得到M个第三TR序列,其中在所述M个移位值中,取值相近的两个移位值之间的差值为K,K为大于0的整数,K与M不存在大于1的公约数;根据所述M个第三TR序列,确定长度为M*N的第四TR序列;根据所述第四TR序列,解调来自第一设备的信号。
- 如权利要求9所述的方法,其特征在于,当所述M为2时,所述M个移位值,包括:0、-1;或,0、+1;当所述M为3时,所述M个移位值,包括:0、-1、+1。
- 如权利要求9或10所述的方法,其特征在于,所述方法还包括:接收来自所述第一设备的所述M个移位值和/或所述M。
- 如权利要求9或10所述的方法,其特征在于,所述方法还包括:根据所述信号对应的IDFT点数,以及所述第一TR序列对应的IDFT点数、所述第一TR序列的长度N、所述第一TR序列中最大元素与最小元素的差值中的至少一项,确定所述M。
- 如权利要求9、10或12所述的方法,其特征在于,所述方法还包括:向所述第一设备发送所述M个移位值和/或所述M。
- 如权利要求9-13中任一项所述的方法,其特征在于,所述方法还包括:接收来自所述第一设备的所述N;或,向所述第一设备发送所述N。
- 一种通信装置,其特征在于,包括接口单元和处理单元;所述处理单元,用于将长度为N的第一载波预留TR序列中的元素扩展M倍,得到第二TR序列,其中N、M为大于0的整数;根据M个移位值对所述第二TR序列进行M次移位,得到M个第三TR序列,其中在所述M个移位值中,取值相近的两个移位值之间的差值为K,K为大于0的整数,K与M不存在大于1的公约数;以及根据所述M个第三TR序列,确定长度为M*N的第四TR序列;所述处理单元,还用于根据所述第四TR序列,通过所述接口单元向第二设备发送信号。
- 如权利要求15所述的装置,其特征在于,所述处理单元根据所述第四TR序列,通过所述接口单元向第二设备发送信号时,具体用于根据所述第四TR序列和所述信号对应的子载波个数,确定TR频域信号,其中,在所述TR频域信号中,与所述第四TR序列对应的子载波位置的幅值为Z,其它子载波位置的幅值为0,Z大于0;对所述TR频域信号进行离散傅里叶逆变换IDFT处理,确定时域核kernel信号;根据所述时域kernel信号,对所述信号进行削峰处理;以及通过所述接口单元向所述第二设备发送所述削峰处理后的信号。
- 如权利要求16所述的装置,其特征在于,所述处理单元对所述TR频域信号进行IDFT处理之前,还用于通过长度为M的窗函数,对所述TR频域信号进行加权处理。
- 如权利要求15-17中任一项所述的装置,其特征在于,当所述M为2时,所述M个移位值,包括:0、-1;或,0、+1;当所述M为3时,所述M个移位值,包括:0、-1、+1。
- 如权利要求15-18中任一项所述的装置,其特征在于,所述处理单元,还用于根据所述信号对应的IDFT点数,以及所述第一TR序列对应的IDFT点数、所述第一TR序列的长度N、所述第一TR序列中最大元素与最小元素的差值中的至少一项,确定所述M。
- 如权利要求15-19中任一项所述的装置,其特征在于,所述接口单元,还用于向所述第二设备发送所述M个移位值和/或所述M。
- 如权利要求15-18中任一项所述的装置,其特征在于,所述接口单元,还用于接收来自所述第二设备的所述M个移位值和/或所述M。
- 如权利要求15-21中任一项所述的装置,其特征在于,所述接口单元,还用于向所述第二设备发送所述N;或,接收来自所述第二设备的所述N。
- 一种通信装置,其特征在于,包括接口单元和处理单元;所述处理单元,用于将长度为N的第一载波预留TR序列中的元素扩展M倍,得到第二TR序列,其中N、M为大于0的整数;根据M个移位值对所述第二TR序列进行M次移位,得到M个第三TR序列,其中在所述M个移位值中,取值相近的两个移位值之间的差值为K,K为大于0的整数,K与M不存在大于1的公约数;以及根据所述M个第三TR序列,确定长度为M*N的第四TR序列;所述处理单元,还用于根据所述第四TR序列,解调所述接口单元接收的来自第一设备的信号。
- 如权利要求23所述的装置,其特征在于,当所述M为2时,所述M个移位值,包括:0、-1;或,0、+1;当所述M为3时,所述M个移位值,包括:0、-1、+1。
- 如权利要求23或24所述的装置,其特征在于,所述接口单元,还用于接收来自所述第一设备的所述M个移位值和/或所述M。
- 如权利要求23或24所述的装置,其特征在于,所述处理单元,还用于根据所述信号对应的IDFT点数,以及所述第一TR序列对应的IDFT点数、所述第一TR序列的长度N、所述第一TR序列中最大元素与最小元素的差值中的至少一项,确定所述M。
- 如权利要求23、24或26所述的装置,其特征在于,所述接口单元,还用于向所述第一设备发 送所述M个移位值和/或所述M。
- 如权利要求23-27中任一项所述的装置,其特征在于,所述接口单元,还用于接收来自所述第一设备的所述N;或,向所述第一设备发送所述N。
- 一种芯片,其特征在于,所述芯片用于实现如权利要求1-14中任一项所述的方法。
- 一种计算机可读存储介质,其特征在于,所述存储介质中存储有计算机程序或指令,当所述计算机程序或指令被执行时,使得如权利要求1-14中任一项所述的方法被实现。
- 一种计算机程序产品,其特征在于,包括计算机程序或指令,当所述计算机程序或指令被执行,使得如权利要求1-14中任一项所述的方法被实现。
- 一种通信***,其特征在于,包括第一设备和第二设备,其中,所述第一设备用于实现如权利要求1-8中任一项所述的方法;所述第二设备用于实现如权利要求9-14中任一项所述的方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211031441.9 | 2022-08-26 | ||
CN202211031441.9A CN117675475A (zh) | 2022-08-26 | 2022-08-26 | 一种通信方法及装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2024041269A1 true WO2024041269A1 (zh) | 2024-02-29 |
Family
ID=90012402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2023/108172 WO2024041269A1 (zh) | 2022-08-26 | 2023-07-19 | 一种通信方法及装置 |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN117675475A (zh) |
WO (1) | WO2024041269A1 (zh) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020173295A1 (zh) * | 2019-02-27 | 2020-09-03 | 华为技术有限公司 | 随机接入方法和装置 |
US20220052894A1 (en) * | 2019-02-15 | 2022-02-17 | Lg Electronics Inc. | Method for generating low papr sequence in wireless communication system, and apparatus for same |
CN114095137A (zh) * | 2020-08-24 | 2022-02-25 | 华为技术有限公司 | 一种无线通信的方法及装置 |
US20220255668A1 (en) * | 2019-10-31 | 2022-08-11 | Huawei Technologies Co., Ltd. | Sequence-based signal transmission method and communication apparatus |
-
2022
- 2022-08-26 CN CN202211031441.9A patent/CN117675475A/zh active Pending
-
2023
- 2023-07-19 WO PCT/CN2023/108172 patent/WO2024041269A1/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220052894A1 (en) * | 2019-02-15 | 2022-02-17 | Lg Electronics Inc. | Method for generating low papr sequence in wireless communication system, and apparatus for same |
WO2020173295A1 (zh) * | 2019-02-27 | 2020-09-03 | 华为技术有限公司 | 随机接入方法和装置 |
US20220255668A1 (en) * | 2019-10-31 | 2022-08-11 | Huawei Technologies Co., Ltd. | Sequence-based signal transmission method and communication apparatus |
CN114095137A (zh) * | 2020-08-24 | 2022-02-25 | 华为技术有限公司 | 一种无线通信的方法及装置 |
Also Published As
Publication number | Publication date |
---|---|
CN117675475A (zh) | 2024-03-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109088840B (zh) | 一种信息传输方法和装置 | |
US11108520B2 (en) | Reference signal transmission method and apparatus | |
WO2022068689A1 (zh) | 物理层协议数据单元ppdu传输方法及相关装置 | |
CN109565825A (zh) | 非授权上行传输方法和装置 | |
CN110719648A (zh) | 一种信息发送、信息接收方法及装置 | |
US20220217029A1 (en) | Communication Method, Apparatus, And Device | |
WO2021082881A1 (zh) | 一种参考信号序列映射、解映射的方法及装置 | |
WO2024041269A1 (zh) | 一种通信方法及装置 | |
WO2023040621A1 (zh) | 一种通信方法及相关装置 | |
WO2021244373A1 (zh) | 传输物理层协议数据单元的方法和装置 | |
WO2022031832A1 (en) | Apparatus, system, and method of communicating a physical layer (phy) protocol data unit (ppdu) with an indication of a 320mhz channel width | |
WO2022042618A1 (zh) | 传输信号的方法和通信装置 | |
CN112822137B (zh) | 一种信号传输方法及装置 | |
WO2017177825A1 (zh) | 一种调制符号传输方法及发送设备 | |
WO2022078209A1 (zh) | 通信方法和通信装置 | |
WO2024082926A1 (zh) | 信号传输方法、通信***及通信装置 | |
WO2020259231A1 (zh) | 通信方法及装置 | |
WO2024065196A1 (zh) | 数据传输方法及装置 | |
WO2022188659A1 (zh) | 一种通信方法及通信装置 | |
WO2024138599A1 (zh) | 一种通信方法及相关设备 | |
WO2022262532A1 (zh) | 符号传输的方法和通信装置 | |
WO2023024897A1 (zh) | 一种长训练字段序列的传输方法及通信装置 | |
WO2024131807A1 (zh) | 解调参考信号的传输方法及相关装置 | |
WO2024152331A1 (zh) | 一种通信方法及装置 | |
WO2023142825A1 (zh) | 一种数据处理方法、装置及相关设备 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23856359 Country of ref document: EP Kind code of ref document: A1 |