WO2018228400A1 - 一种信息传输方法和装置 - Google Patents
一种信息传输方法和装置 Download PDFInfo
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- WO2018228400A1 WO2018228400A1 PCT/CN2018/090913 CN2018090913W WO2018228400A1 WO 2018228400 A1 WO2018228400 A1 WO 2018228400A1 CN 2018090913 W CN2018090913 W CN 2018090913W WO 2018228400 A1 WO2018228400 A1 WO 2018228400A1
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- 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
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
- H04L27/26134—Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
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- 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
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
Definitions
- the embodiments of the present invention relate to the field of communications technologies, and in particular, to an information transmission method and apparatus.
- the transmitting device can insert a phase tracking reference signal (PTRS) into the data signal.
- PTRS phase tracking reference signal
- the receiving end device first estimates the phase error of the PTRS, and then obtains the phase error of the data signal by filtering and/or interpolation, thereby realizing phase error compensation for the data signal.
- the uplink waveform can be a single carrier.
- PAPR peak-to-average power ratio
- the present application provides an information transmission method and apparatus, which contributes to the advantages of single carrier low PAPR.
- the present application provides an information processing method and apparatus.
- the present application provides an information processing method, where the execution body of the method may be a transmitting end device, wherein in the uplink direction, the transmitting end device is a terminal; in the downlink direction, the transmitting end device is Base station.
- the method can include generating one or more orthogonal frequency division multiplexing (OFDM) symbols, wherein each of the partial or full OFDM symbols can include a pi/2 (two-part ⁇ ) binary Phase shift keying (BPSK) modulated data signal, and pi/2 BPSK modulated PTRS.
- OFDM orthogonal frequency division multiplexing
- BPSK binary Phase shift keying
- PTRS in the OFDM symbol is a pi/2 BPSK modulated PTRS.
- the PTRS is a QPSK modulated PTRS, and the PTRS is added. Randomness, in which the greater the randomness, the more stable the performance of the system, thus contributing to the good performance of single carrier low PAPR.
- the method may further include: phase shifting the BPSK modulated PTRS to obtain a pi/2 BPSK modulated PTRS; wherein the PTRS includes one or more PTRS blocks, and each PTRS block includes One or more BPSK symbols are phase shifted according to the pi/2 increment rule for the BPSK symbols in each PTRS block.
- the method may further include: phase shifting the BPSK modulated PTRS to obtain a pi/2 BPSK modulated PTRS; wherein the PTRS includes one or more PTRS blocks, and each PTRS block includes One or more BPSK symbols are phase shifted according to the pi/2 decreasing rule for the BPSK symbols in each PTRS block.
- the PTRS after pi/2BPSK modulation can be obtained by, for example but not limited to, the PTRS after the pi/2 BPSK modulation is preset; or, in each PTRS block of a part of the PTRS blocks in the BPSK modulated PTRS.
- Each BPSK is phase-shifted according to the pi/2 increment rule, and each BPSK in each PTRS block in another partial PTRS block is phase-shifted according to the pi/2 decreasing law.
- each BPSK symbol in the PTRS block is phase-shifted in the order of 0, pi/2, pi, 3pi/2, ..., or 0, respectively, in the order of arrangement.
- the phases of -pi/2, -pi, -3pi/2, ... are phase shifted.
- the phase shift can be understood as: 0 phase shift of the BPSK symbol in the PTRS block, that is, no phase shift of the BPSK symbol in the PTRS block.
- the phase shift of the BPSK symbols in each PTRS block according to the pi/2 increment rule may include: according to the order of the BPSK symbols in the sequence, in a pi/2 increment rule, A phase shift is performed on each BPSK symbol in the sequence, wherein the sequence is a sequence obtained by inserting a BPSK-modulated PTRS into a BPSK-modulated data signal.
- the transmitting end device can learn the sequence of the BPSK symbols in the sequence before performing the BPSK-modulated PTRS into the BPSK-modulated data signal.
- the present application does not limit the order in which the transmitting end device performs insertion and phase shifting. This possible design can be thought of as phase shifting the data signal and PTRS as a whole. In this way, the computational complexity of both the transmitting and receiving parties can be simplified.
- the phase shift of the BPSK symbols in each PTRS block according to the pi/2 increment rule may include: pi/2 according to the order of the BPSK symbols in the BPSK modulated PTRS.
- the law of incrementing phase shifts each BPSK symbol in the BPSK-modulated PTRS.
- This possible design can be thought of as a separate phase shift between the data signal and the PTRS. In this way, the computational complexity of both the transmitting and receiving parties can be simplified.
- the phase shift of the BPSK symbols in each PTRS block according to the pi/2 decreasing rule may include: according to the order of the BPSK symbols in the sequence, in a pi/2 decreasing law, A phase shift is performed on each BPSK symbol in the sequence, wherein the sequence is a sequence obtained by inserting a BPSK-modulated PTRS into a BPSK-modulated data signal.
- This possible design can be thought of as phase shifting the data signal and PTRS as a whole. In this way, the computational complexity of both the transmitting and receiving parties can be simplified.
- the phase shift of the BPSK symbols in each PTRS block according to the pi/2 decreasing rule may include: pi/2 according to the order of the BPSK symbols in the BPSK modulated PTRS.
- the law of decrementing phase shifts each BPSK symbol in the BPSK-modulated PTRS.
- This possible design can be thought of as a separate phase shift between the data signal and the PTRS. In this way, the computational complexity of both the transmitting and receiving parties can be simplified.
- the method may further include inserting the BPSK modulated PTRS into the BPSK modulated data signal prior to phase shifting the BPSK modulated PTRS.
- the method may further include: inserting the pi/2 BPSK modulated PTRS into the pi/2 BPSK modulated data signal after phase shifting the BPSK modulated PTRS.
- the present application also provides an information processing apparatus, which can implement the information processing method of the first aspect.
- the information processing device may be a chip (such as a baseband chip or a communication chip) or a transmitting device (such as a base station or a terminal).
- the above method can be implemented by software, hardware or by executing corresponding software through hardware.
- the information processing apparatus includes a processor and a memory.
- the processor is configured to support the apparatus to perform corresponding functions in the above described information processing method.
- the memory is coupled to the processor, which holds the programs (instructions) and data necessary for the device.
- the information processing apparatus may further include a communication interface for supporting communication between the apparatus and other network elements.
- the communication interface can be a transceiver.
- the apparatus can include a processing unit.
- the processing unit is configured to: generate one or more OFDM symbols, wherein each OFDM symbol in part or all of the OFDM symbols may include a pi/2 BPSK modulated data signal, and a pi/2 BPSK modulated PTRS.
- the processing unit may be further configured to: phase shift the BPSK modulated PTRS to obtain a pi/2 BPSK modulated PTRS; wherein the PTRS includes one or more PTRS blocks, and each PTRS block Including one or more BPSK symbols, the BPSK symbols in each PTRS block are phase shifted according to the pi/2 increment rule.
- the processing unit may be specifically configured to perform phase shifting on each BPSK symbol in the sequence according to an order of increasing BPSK symbols in the sequence, and the sequence is BPSK modulated. The sequence obtained by inserting the BPSK modulated data signal into the PTRS.
- the processing unit may be configured to perform phase shift on each BPSK symbol in the BPSK modulated PTRS according to the order of the BPSK symbols in the BPSK modulated PTRS and in a pi/2 increment rule.
- the processing unit may be further configured to: phase shift the BPSK modulated PTRS to obtain a pi/2 BPSK modulated PTRS; wherein the PTRS includes one or more PTRS blocks, and each PTRS block Including one or more BPSK symbols, the BPSK symbols in each PTRS block are phase shifted according to the pi/2 decreasing rule.
- the processing unit may be specifically configured to perform phase shift on each BPSK symbol in the sequence according to a sequence of BPSK symbols in the sequence, in a pi/2 decreasing manner, where the sequence is BPSK modulated. The sequence obtained by inserting the BPSK modulated data signal into the PTRS.
- the processing unit may be configured to perform phase shift on each BPSK symbol in the BPSK modulated PTRS according to the order of the BPSK symbols in the BPSK modulated PTRS by using a pi/2 decreasing rule.
- the processing unit may be further configured to insert the BPSK modulated PTRS into the BPSK modulated data signal prior to phase shifting the BPSK modulated PTRS.
- the processing unit may be further configured to insert the pi/2 BPSK modulated PTRS into the pi/2 BPSK modulated data signal after phase shifting the BPSK modulated PTRS.
- the present application provides an information transmission method and apparatus.
- the present application provides an information transmission method, and the execution body of the method may be a transmitting device.
- the method can include generating one or more OFDM symbols, wherein each of the partial or full OFDM symbols can include a pi/2 BPSK modulated data signal, and a pi/2BPSK modulated PTRS. Then, the OFDM symbol is transmitted.
- each of the partial or full OFDM symbols can include a pi/2 BPSK modulated data signal, and a pi/2BPSK modulated PTRS.
- the OFDM symbol is transmitted.
- the method may further include determining, according to a modulation and coding scheme (MCS), that the modulation mode of the data signal is pi/2 BPSK.
- MCS modulation and coding scheme
- the preset value is 4, 6, or 8.
- the present application further provides an information transmission apparatus for implementing the information transmission method according to the second aspect.
- the device can be implemented by software, or hardware, or by hardware to execute corresponding software.
- the hardware or software includes one or more modules corresponding to the above functions.
- the apparatus includes a processor, a memory, and a communication interface; the processor is configured to support the apparatus to perform a corresponding function in the method of the second aspect described above.
- the communication interface is used to support communication between the device and other network elements.
- the memory is for coupling to a processor that holds the program instructions and data necessary for the device.
- the communication interface may specifically be a transceiver.
- the apparatus can include a processing unit and a transmitting unit.
- the processing unit is configured to generate one or more OFDM symbols, wherein each OFDM symbol in part or all of the OFDM symbols may include a pi/2 BPSK modulated data signal, and a pi/2 BPSK modulated PTRS.
- the transmitting unit is configured to transmit the OFDM symbol.
- the processing unit is further configured to determine that the modulation mode of the data signal is pi/2 BPSK based on the MCS.
- the MCS is greater than or equal to 0 and less than or equal to the preset value, determining that the modulation mode of the data signal is pi/2 BPSK; the preset value is 4, 6, or 8.
- the present application also provides another information transmission method and apparatus.
- the present application provides an information transmission method
- the execution body of the method may be a receiving end device, wherein in the uplink direction, the receiving end device is a base station; in the downlink direction, the receiving end device is terminal.
- the method can include receiving one or more OFDM symbols, wherein each OFDM symbol in a portion or all of the OFDM symbols includes a pi/2 BPSK modulated data signal, and a pi/2 BPSK modulated PTRS;
- the pi/2 BPSK modulated PTRS demodulates the pi/2 BPSK modulated data signal.
- demodulating the pi/2 BPSK modulated data signal according to the pi/2 BPSK modulated PTRS may include: phase shifting the pi/2 BPSK modulated PTRS, according to the phase shift PTRS demodulates pi/2 BPSK modulated data signals; wherein PTRS includes one or more PTRS blocks, each PTRS block includes one or more BPSK symbols, and pi/2 for each BPSK symbol in each PTRS block The phase shift is performed by increasing the law.
- the phase shift of the BPSK symbols in each PTRS block according to the pi/2 increment rule may include: increasing the order by pi/2 according to the order of the BPSK symbols in the OFDM symbol. Phase shifting each BPSK symbol in the OFDM symbol;
- the phase shift of the BPSK symbols in each PTRS block according to the pi/2 increment rule may include: according to the order of the BPSK symbols in the pi/2 BPSK modulated PTRS, The law of pi/2 incrementing phase shifts each BPSK symbol in the pi/2 BPSK modulated PTRS.
- demodulating the pi/2 BPSK modulated data signal according to the pi/2 BPSK modulated PTRS may include: phase shifting the pi/2 BPSK modulated PTRS, according to the phase shift PTRS demodulates pi/2 BPSK modulated data signals; wherein PTRS includes one or more PTRS blocks, each PTRS block includes one or more BPSK symbols, and pi/2 for each BPSK symbol in each PTRS block The phase shift is performed by decreasing the law.
- the phase shift of the BPSK symbols in each PTRS block according to the pi/2 decreasing rule may include: decreasing the order of pi/2 according to the order of the BPSK symbols in the OFDM symbol. Phase shifting each BPSK symbol in the OFDM symbol;
- the phase shift of the BPSK symbols in each PTRS block according to the pi/2 decreasing rule may include: according to the order of the BPSK symbols in the pi/2 BPSK modulated PTRS, The law of pi/2 decrementing phase shifts each BPSK symbol in the pi/2 BPSK modulated PTRS.
- phase shift performed by the receiving device is related to the phase shift performed by the transmitting device, and the related manner can be referred to the following specific implementation manner, and details are not described herein again.
- the present application further provides an information transmission apparatus for implementing the information transmission method described in the third aspect.
- the device can be implemented by software, or hardware, or by hardware to execute corresponding software.
- the hardware or software includes one or more modules corresponding to the above functions.
- the apparatus includes a processor, a memory, and a communication interface; the processor is configured to support the apparatus to perform a corresponding function in the method of the third aspect above.
- the communication interface is used to support communication between the device and other network elements.
- the memory is for coupling to a processor that holds the program instructions and data necessary for the device.
- the communication interface may specifically be a transceiver.
- the apparatus can include: a receiving unit and a processing unit.
- the receiving unit is configured to receive one or more OFDM symbols, where each OFDM symbol in part or all of the OFDM symbols includes a pi/2 BPSK modulated data signal, and a pi/2 BPSK modulated PTRS.
- the processing unit is configured to demodulate the pi/2 BPSK modulated data signal and the pi/2 BPSK modulated PTRS.
- the processing unit may be specifically configured to: phase shift the pi/2 BPSK modulated PTRS, and demodulate the pi/2 BPSK modulated data signal according to the phase shifted PTRS; the PTRS includes one or A plurality of PTRS blocks, each of which includes one or more BPSK symbols, and phase shifts the BPSK symbols in each PTRS block according to a pi/2 increment rule.
- the processing unit may be specifically configured to: perform phase shifting on the BPSK symbol in each PTRS block according to a pi/2 increment rule, and may include: pi/2 according to an arrangement order of each BPSK symbol in the OFDM symbol. The law of incrementing phase shifts each BPSK symbol in the OFDM symbol.
- the processor may be specifically configured to perform, according to the order of the BPSK symbols in the PTRS modulated by the pi/2 BPSK, in the pi/2 increment rule, perform the BPSK symbols in the pi/2 BPSK modulated PTRS. Phase shift.
- the processing unit may be specifically configured to: phase shift the pi/2 BPSK modulated PTRS, and demodulate the pi/2 BPSK modulated data signal according to the phase shifted PTRS; the PTRS includes one or A plurality of PTRS blocks, each of which includes one or more BPSK symbols, and phase shifts the BPSK symbols in each PTRS block according to a pi/2 decreasing rule.
- the processing unit may be specifically configured to: perform phase shifting on the BPSK symbol in each PTRS block according to a pi/2 decreasing rule, and may include: pi/2 according to an arrangement order of each BPSK symbol in the OFDM symbol. The law of decrementing phase shifts each BPSK symbol in the OFDM symbol.
- the processor may be specifically configured to perform, according to the pi/2 decreasing rule, the BPSK symbols in the pi/2 BPSK modulated PTRS according to the order of the BPSK symbols in the pi/2 BPSK modulated PTRS. Phase shift.
- the processing unit is further configured to: according to the MCS, determine that the modulation mode of the data signal is pi/2 BPSK.
- the MCS is greater than or equal to 0 and less than or equal to the preset value, determining that the modulation mode of the data signal is pi/2 BPSK; the preset value is 4, 6, or 8.
- the transmitting end generates an orthogonal frequency division multiplexing OFDM symbol, where the OFDM symbol includes a phase reference signal PTRS modulated by ⁇ pi/2 binary phase shift keying BPSK; the transmitting end transmits the OFDM symbol.
- the method may further include performing phase shift on the BPSK modulated PTRS to obtain the pi/2 BPSK modulated PTRS; wherein the PTRS includes one or more PTRSs Block, each PTRS block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are phase shifted according to the pi/2 increment rule.
- phase shifting the BPSK symbols in each PTRS block according to a pi/2 increment rule includes: phase shifting the PTRS according to a position of the PTRS symbol within the OFDM symbol; or, according to the PTRS symbol The position in the PTRS sequence phase shifts the PTRS.
- the sending end may further perform power lifting on the PTRS symbol, and the sending end may determine a lifting power value according to a modulation mode of the data signal in the OFDM symbol.
- the transmitting end may further determine a modulation mode of the data signal according to a modulation and coding scheme MCS.
- the OFDM symbol is a discrete Fourier transform single carrier DFT-s-OFDM symbol.
- the transmitting end may include a processing unit, configured to generate the orthogonal frequency division multiplexing OFDM symbol, and the sending end further includes a sending unit, configured to send the OFDM symbol.
- the transmitting end may include a processor and a transmitter for generating an OFDM symbol and transmitting the OFDM symbol, respectively.
- the transmitting device can be a chip or chip system.
- phase shifting the pi/2 BPSK symbols in each PTRS block according to a pi/2 increment rule includes: phase shifting the PTRS according to a position of the PTRS symbol in the OFDM symbol; Alternatively, the PTRS is phase shifted according to the position of the PTRS symbol in the PTRS received signal.
- an information transmission method includes: receiving, by a receiving end, an orthogonal frequency division multiplexing OFDM symbol, where the OFDM symbol includes a phase of ⁇ pi/2 binary phase shift keying BPSK modulation. a reference signal PTRS; the receiving end demodulates the data signal according to the pi/2 BPSK modulated PTRS.
- the method further includes phase shifting the BPSK modulated PTRS sequence to obtain the pi/2 BPSK modulated PTRS sequence; wherein the PTRS includes one or more PTRS blocks, each PTRS The block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are phase shifted in accordance with the pi/2 increment rule.
- the receiving end performs phase shifting on the rule that the BPSK symbol is incremented by pi/2 in each PTRS block, and may perform phase shifting on the PTRS according to the position of the PTRS symbol in the OFDM symbol; or Phase shifting of the PTRS according to the position of the PTRS symbol in the PTRS sequence.
- the OFDM symbol is a discrete Fourier transform single carrier DFT-s-OFDM symbol.
- the receiving end may include a receiving unit for receiving the OFDM symbol, and the receiving end may further include a processing unit for demodulating the data signal.
- the receiving end may include a receiver and a processor for receiving OFDM symbols and demodulating data signals, respectively.
- the transmitting device can be a chip or chip system.
- the OFDM symbol may be, for example but not limited to, any one of the following: a DFT-s-OFDM symbol, a ZT-DFT-s-OFDM symbol, a UW-DFT-s-OFDM, etc. It can also be a symbol of DFT-s-OFDM variation or evolution waveform, etc., where DFT is the abbreviation of discrete fourier transformation, ZT is the abbreviation of zero tail, UW is unique The abbreviation of word (single word), s is the abbreviation of single carrier.
- the application also provides a computer storage medium having stored thereon a computer program (instructions) that, when executed on a computer, cause the computer to perform the method of any of the above aspects.
- the application also provides a computer program product, when run on a computer, causing the computer to perform the method of any of the above aspects.
- FIG. 1 is a schematic diagram of a communication system to which the technical solution provided by the embodiment of the present application is applied;
- FIG. 2 is a schematic diagram of a data signal and a PTRS according to an embodiment of the present disclosure
- FIG. 3 is a schematic diagram of another data signal and PTRS according to an embodiment of the present disclosure.
- FIG. 5 is a schematic diagram of simulation comparison of PAPR under different technical solutions provided in the prior art
- FIG. 6 is a schematic diagram of an information transmission method according to an embodiment of the present application.
- FIG. 7 is a schematic diagram of a process of information processing according to an embodiment of the present application.
- FIG. 8 is a schematic diagram of another phase shift amount provided by an embodiment of the present application.
- FIG. 9 is a schematic diagram of another process of information processing according to an embodiment of the present application.
- FIG. 10 is a schematic diagram of another phase shift amount provided by an embodiment of the present application.
- FIG. 11 is a schematic diagram of simulation comparison of PAPR under different technical solutions according to an embodiment of the present application.
- FIG. 12 is a schematic diagram of another information transmission method according to an embodiment of the present application.
- FIG. 13 is a schematic diagram of another process of information processing according to an embodiment of the present disclosure.
- FIG. 14 is a schematic diagram of another process of information processing according to an embodiment of the present disclosure.
- FIG. 15 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present application.
- FIG. 16 is a schematic structural diagram of another information transmission apparatus according to an embodiment of the present application.
- the technical solution provided by the present application can be applied to various communication systems using single carrier transmission technologies, for example, a communication system using a single carrier transmission technology based on an existing communication system, a 5G communication system, a future evolution system, or multiple communication.
- Converged systems and more. Can include a variety of application scenarios, such as machine to machine (M2M), D2M, macro communication, enhanced mobile broadband (eMBB), ultra high reliability and ultra low latency communication (ultra Reliable & low latency communication (uRLLC) and massive machine type communication (mMTC) scenarios.
- M2M machine to machine
- eMBB enhanced mobile broadband
- uRLLC ultra high reliability and ultra low latency communication
- mMTC massive machine type communication
- These scenarios may include, but are not limited to, a communication scenario between the terminal and the terminal, a communication scenario between the base station and the base station, a communication scenario between the base station and the terminal, and the like.
- the technical solution provided by the embodiment of the present application can also be applied to a scenario between a terminal and a terminal in a 5G communication system, or a communication between a base station and a base station.
- the single carrier transmission may be uplink single carrier transmission or downlink single carrier transmission.
- Figure 1 shows a schematic diagram of a communication system.
- the communication system may include at least one base station 100 (only one shown) and one or more terminals 200 connected to the base station 100.
- Base station 100 can be a device that can communicate with terminal 200.
- the base station 100 can be a relay station or an access point or the like.
- the base station 100 may be a base transceiver station (BTS) in a global system for mobile communication (GSM) or a code division multiple access (CDMA) network, or may be a wideband code.
- the NB (NodeB) in the wideband code division multiple access (WCDMA) may also be an eNB or an eNodeB (evolutional NodeB) in LTE.
- the base station 100 may also be a wireless controller in a cloud radio access network (CRAN) scenario.
- CRAN cloud radio access network
- the base station 100 may also be a network device in a 5G network or a network device in a future evolved network; it may also be a wearable device or an in-vehicle device or the like.
- the base station 100 can also be a small station, a transmission reference point (TRP), or the like. Of course, no application is not limited to this.
- the terminal 200 may be a user equipment (UE), an access terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a UE terminal, a terminal, a wireless communication device, a UE proxy, or UE device, etc.
- the access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), with wireless communication.
- the process of phase error compensation is as follows: for each OFDM symbol in one or more OFDMs in the time domain, the transmitting device inserts the PTRS into the data signal, then DFT, resource mapping, fast Fourier The inverse fast fourier transform (IFFT) and the like are sent out. After receiving the signal, the receiving device obtains PTRS after fast Fourier transform (FFT), resource inverse mapping, and inverse discrete fourier transform (IDFT). PTRS) and data signals (ie received data signals). Then, based on the original PTRS and the received PTRS estimation, the phase error of the PTRS is obtained.
- FFT fast Fourier transform
- IDFT inverse discrete fourier transform
- phase error of the data signal is obtained by filtering and/or interpolation, and the phase error of the received data signal is compensated by the phase error of the data signal. Finally, The data signal obtained by the phase error compensation is demodulated.
- the phase error includes phase changes of signals caused by phase noise, carrier offset, Doppler, and the like.
- the device at the transmitting end refers to a device that sends a data signal.
- the device at the transmitting end can also send a reference signal or send other signals, which is not limited in this application.
- the receiving end device refers to a device that receives a data signal.
- the receiving end device can also receive a reference signal or receive other signals, which is not limited in this application.
- the transmitting end device in the uplink direction, is a terminal, and the receiving end device is a base station.
- the transmitting device is a base station, and the receiving device is a terminal.
- the reference signal can be, for example but not limited to, a PTRS or the like.
- PTRS is a signal known to both transceivers.
- the PTRS reserved by both the transmitting and receiving parties is a modulated symbol sequence.
- the modulation mode of the PTRS is, for example but not limited to, BPSK, pi/2 BPSK, quadrature phase shift keying (QPSK), and the like.
- QPSK quadrature phase shift keying
- PTRS refers to a BPSK symbol sequence
- the BPSK symbol sequence includes one or more BPSK symbols (ie, BPSK modulation symbols).
- the PTRS refers to a QPSK symbol sequence, and the QPSK symbol sequence includes one or more QPSK symbols (ie, QPSK modulation symbols).
- QPSK modulation symbols ie, QPSK modulation symbols.
- a PTRS may include one or more PTRS blocks (or pilot blocks or PTRS pilot blocks), each PTRS block including one or more modulation symbols.
- the PTRS is illustrated by inserting a data signal into a sequence of BPSK symbols, and thus each PTRS block includes one or more BPSK symbols.
- the data signal is a signal known to the transmitting device and unknown to the receiving device.
- the data signal may be a bit sequence or a sequence of symbols obtained by modulating the bit sequence. Whether the data signal specifically indicates a bit sequence or a symbol sequence can be obtained according to a usage scenario and a context description.
- the "data signal” in "modulating a data signal” is a bit sequence.
- the “data signal” in "Insert PTRS into a data signal” is a symbol sequence. Other examples are not listed one by one.
- the modulation mode of the data signal is, for example but not limited to, BPSK, pi/2 BPSK, QPSK, 16QAM, and the like. For example, if the modulation mode is BPSK or pi/2 BPSK, the modulated data signal is a BPSK symbol sequence.
- the original PTRS refers to the PTRS that is sent and received by the dual-issue, and is the pre-stored PTRS.
- the received PTRS can be understood as: the PTRS obtained after the original PTRS is transmitted through the channel.
- the received data signal can be understood as the data signal obtained after the original data signal is transmitted through the channel.
- the original data signal can be understood as a data signal sent by the transmitting device.
- the received PTRS is often different from the original PTRS, and the received data signal is often different from the original data signal.
- the concept of a first sequence is introduced.
- the first sequence is a sequence obtained by inserting a BPSK-modulated PTRS into a BPSK-modulated data signal.
- the second sequence is a sequence obtained by inserting the pi/2 BPSK modulated PTRS into the pi/2 BPSK modulated data signal.
- inventions and PTRS do not limit the distribution of data signals and PTRS in the first sequence/second sequence.
- Figures 2 and 3 show the distribution of data signals and PTRS.
- two adjacent OFDM symbols mapped with PTRS are separated by one OFDM symbol without mapping PTRS, although the present application is not limited thereto.
- one PTRS block is inserted every BPSK symbol of the data signal, and the number of BPSK symbols (ie, the BPSK symbol of the PTRS) included in any two PTRS blocks may be the same or different.
- the number of BPSK symbols (ie, BPSK symbols of the data signal) between any two adjacent PTRS blocks may be the same or different.
- the sequence formed by the PTRS and the data signal in each of the OFDM symbols mapped to the PTRS in FIG. 2 and FIG. 3 is a first sequence/second sequence.
- FIG. 2 and FIG. 3 The difference between FIG. 2 and FIG. 3 is that, in FIG. 3, UWs of OFDM symbols mapped with PTRS are also mapped with UW for channel estimation.
- FIG. 2 and FIG. 3 may be used in combination.
- a signal distribution on an OFDM symbol mapped with a PTRS may be referred to FIG. 2
- a signal distribution on an OFDM symbol mapped with a PTRS may be referred to FIG. 3.
- M PTRS blocks are inserted between data signals, and each PTRS block includes N BPSK symbols as an example, wherein M and N are integers greater than or equal to 1.
- the modulation mode of the data signal can be pi/2 BPSK.
- the process of performing pi/2BPSK on the data signal may include: modulating the data signal with BPSK, and then phase shifting the BPSK symbol in the BPSK modulated data signal according to the pi/2 increment or decrement.
- each small square in Figure 4 represents a BPSK symbol.
- D 1 , D 2 ... D m , D m+1 ... D n , D n+1 ... D N shown in (a) of Fig. 4 are BPSK symbols in a BPSK-modulated data signal, P 1 P 2 ...
- P k , P k+1 ... P t are BPSK symbols in the BPSK-modulated PTRS.
- 1 ⁇ m ⁇ n ⁇ N, 1 ⁇ k ⁇ t, m, n, N, k and t are integers.
- the number in each small square in (b) of Fig. 4 indicates the phase shift coefficient of the BPSK symbol directly above the small square.
- the phase shift amount of the BPSK symbol is the product of the phase shift coefficient of the BPSK symbol and pi/2.
- the sequence obtained in (b) of FIG. 4 can be considered as a sequence obtained by inserting BPSK-modulated PTRS between data signals after pi/2 BPSK modulation. As can be seen from (b) of FIG. 4, this destroys the pi/2 characteristic of the data signal and the low PAPR characteristic of pi/2 BPSK, resulting in an increase in the PAPR of the communication system. Moreover, the larger the PTRS block, the greater the impact on the PAPR of the communication system.
- Figure 5 shows a simulation of the PAPR of the communication system when the BPSK-modulated PTRS and the PTRS are not inserted between the data signals when the data signal is pi/2 BPSK. In FIG.
- the abscissa represents PAPR in units of dB; the ordinate represents a compensated cumulative distribution function (CCDF), wherein CCDF represents a probability that the statistic is greater than the corresponding point on the abscissa.
- CCDF compensated cumulative distribution function
- the PAPR of the communication system is increased by 0.5 dB when BPSK-modulated PTRS is inserted between the data signals (see the dotted line in Fig. 5) than when the PTRS is not inserted (see the solid line in Fig. 5). (decibel).
- the modulation mode of the PTRS is generally QPSK, and in this case, an example of inserting the QPSK modulated PTRS between the BPSK modulated data signals can be obtained based on the above FIG. 4, where No longer.
- first means for distinguishing different objects and do not limit their order.
- second means for distinguishing different sequences, and the order is not limited.
- FIG. 6 is a schematic diagram of an information transmission method provided by the present application.
- the information processing process in the scenario where the transmitting end device performs the insertion step and then the phase shifting step is performed which specifically includes:
- the transmitting end device determines a modulation mode of the data signal and a preset modulation mode of the PTRS.
- the transmitting device is a terminal.
- the terminal may determine the modulation mode of the data signal according to the received MCS sent by the base station and the mapping relationship between the pre-stored MCS and the modulation mode.
- the transmitting device is a base station.
- the base station may determine the MCS according to the current channel quality, and determine a modulation mode of the data signal according to a mapping relationship between the pre-stored MCS and the modulation mode.
- the MCS is greater than or equal to 0 and less than or equal to a preset value
- the modulation mode of the data signal is determined to be pi/2 BPSK; the preset value is 4, 6, or 8.
- MCS is an integer greater than or equal to zero.
- the transmitting device If the modulation mode of the data signal is pi/2 BPSK, and the modulation mode of the preset PTRS is BPSK, the transmitting device first performs BPSK modulation on the data signal, and inserts the BPSK modulated PTRS into the BPSK modulated data signal. In the first sequence, the S106 is performed.
- the present application mainly solves the problem that the PAPR of the communication system increases due to the insertion of the BPSK-modulated PTRS when the modulation mode of the data signal is pi/2 BPSK. Therefore, if the modulation mode of the data signal is pi/2BPSK, the technical solution provided by the present application is executed. If the modulation mode of the data signal is not pi/2 BPSK, it can be processed according to the technical solution provided by the prior art, and the application is not limited thereto.
- the transmitting device may perform pi/2 BPSK modulation on the data signal first, and pi/2 BPSK modulated The PTRS is inserted into the pi/2 BPSK modulated data signal to obtain a first signal. Then S108 is performed.
- S106 The transmitting end device phase shifts each BPSK symbol in the first sequence to obtain a first signal.
- the PTRS includes one or more PTRS blocks, and each PTRS block includes one or more BPSK symbols.
- Phase shifting the PTRS may include phase shifting the BPSK symbols in each PTRS block according to a pi/2 increment or decrement. This application does not limit the phase shift law of BPSK symbols between PTRS blocks.
- step S106 is optional, for example, but not limited to, implemented by the following manner 1 or mode 2:
- Manner 1 The transmitting device phase shifts each BPSK symbol in the first sequence according to the order of the BPSK symbols in the first sequence, and obtains the first signal. Alternatively, according to the order of the BPSK symbols in the first sequence, each BPSK symbol in the first sequence is phase-shifted by a pi/2 decreasing law to obtain a first signal.
- the mode 1 can be understood as that the transmitting end device phase shifts the data signal and the PTRS as a whole.
- S106 is implemented by mode 1
- the implementation process of this embodiment is as shown in FIG. 7.
- the phase shift amount of the data signal and the phase shift amount of the PTRS are related to the relative positions of the data signal and the PTRS in the first sequence; it can also be understood as:
- the amount of phase shift of each BPSK symbol in the first sequence is related to the position of the BPSK symbol in the first sequence.
- Fig. 8 is a diagram showing the amount of phase shift of each BPSK symbol in the BPSK-modulated symbol sequence (in the first mode, that is, the first sequence).
- the first mode that is, the first sequence.
- (b) of FIG. 8 shows the amount of phase shift of the phase shift of each BPSK symbol in the BPSK-modulated symbol sequence by the law of increasing pi/2.
- the transmitting end device phase shifts the data signal and the PTRS as a whole, that is, the PTRS is regarded as a part of the data signal, and then the data signal is pi/2 BPSK modulated. Therefore, the communication system in the mode
- the PAPR is the same as the PAPR of the communication system when the PTRS is not inserted in the data signal.
- Manner 2 The transmitting end device performs phase shift on each BPSK symbol in the PTRS according to the order of the BPSK symbols in the PTRS, in a pi/2 increment or decrement; and, in a pi/2 increment or decrement, Phase shifting each BPSK symbol in the BPSK modulated data signal to obtain a first signal.
- This mode 2 can be understood as that the transmitting end device independently phase shifts the data signal and the PTRS.
- the present application does not limit the phase shift of the PTRS by the transmitting end device and the phase shift of the phase shift of the data signal.
- the implementation manner 1 in Table 1 illustrates that the transmitting end device performs phase shift on the PTRS according to the order of each BPSK symbol in the PTRS in increments of pi/2; and in the order of each BPSK symbol in the data signal, in pi/ 2
- the law of incrementing phase shifts the data signal.
- the explanation of other implementations will not be described one by one.
- the phase shift amount of the BPSK symbol in the PTRS is independent of the relative position of the PTRS and the data signal, and is related to the relative position between the BPSK symbols in the PTRS.
- the amount of phase shift of the data signal is independent of the relative position between the PTRS and the data signal, and is related to the relative position between the BPSK symbols in the data signal.
- Fig. 10 is a diagram showing the amount of phase shift of each BPSK symbol in the symbol sequence after BPSK modulation in this mode.
- (b) of FIG. 10 illustrates an example in which the phase shift amount of the data signal and the PTRS are independently phase-shifted (that is, the implementation mode 1 in Table 1) is increased by pi/2.
- Other examples are not listed one by one.
- phase shift amount mod (pi/2*k, 2 pi)
- the number of BPSK symbols in the PTRS block and the BPSK symbol of the data signal between the PTRS blocks are both integer multiples of 2
- the technical solutions in the phase shift direction are equivalent, for example, the above-described implementations 1 to 4 are equivalent.
- FIG. 11 shows the simulation comparison of PAPR under different technical solutions. Among them, the abscissa indicates PAPR, and the unit is dB; the ordinate indicates CCDF.
- FIG. 11 is a schematic diagram showing the simulation comparison of the PAPR in the technical solution in which the PTRS is not inserted in the data signal (see the dotted line corresponding to the w/o PTRS in FIG. 11) and the phase shift is performed in the above manner 1 or 2.
- the dotted line which inserts a PTRS in the data signal and the dotted line which shows the 1st of FIG.
- the transmitting end device performs DFT, resource mapping, IFFT, and the like on the first signal, and then sends the signal out.
- the receiving end device receives the signal, and performs FFT, resource inverse mapping, IDFT and the like on the signal to obtain a second signal.
- the second information can be understood as a signal obtained after the first signal is transmitted through the channel.
- the second signal includes a pi/2BPSK modulated data signal and a pi/2 BPSK modulated PTRS.
- the receiving end device performs phase shift on each BPSK symbol in the second signal. After executing S112, the obtained data signal is the received data signal, and the obtained PTRS is the received PTRS.
- the receiving device is a base station.
- the receiving device is a terminal.
- the terminal may determine the modulation mode of the data signal according to the received MCS sent by the base station and the mapping relationship between the pre-stored MCS and the modulation mode.
- the transmitting device uses phase 1 to phase shift the first sequence in S106, then in S110, the receiving device performs a phase shift in the opposite direction to the second signal according to mode 1. Specifically, if the transmitting device performs phase shifting on each BPSK symbol in the first sequence according to the order of each BPSK symbol in the first sequence, the receiving device follows the second signal. The order of each BPSK symbol is phase shifted for each BPSK symbol in the second signal by a pi/2 decreasing law. If the transmitting device performs phase shifting on each BPSK symbol in the first sequence according to the order of each BPSK symbol in the first sequence, the receiving device follows each BPSK symbol in the second signal.
- each time domain symbol is phase shifted by the pi/2 increments for each BPSK symbol in the second signal.
- the phase shift of the certain BPSK symbol in the first sequence by the transmitting device is theta
- the phase shift of the corresponding BPSK symbol in the second signal by the receiving device is –theta.
- the transmitting device uses phase 2 to phase shift the first sequence in S106; then, in S110, the receiving device performs a phase shift in the opposite direction to the second signal according to mode 2. Specifically, if the transmitting end device performs phase shift according to the implementation manner i in Table 1, the receiving end device performs phase shift according to the implementation manner ia in Table 2. Where 1 ⁇ i ⁇ 4, i is an integer. For example, if the transmitting device performs phase shift according to implementation 1 in Table 1, the receiving device can perform phase shift according to implementation 1a in Table 2.
- the first sequence is phase-shifted by the transmitting device according to any implementation manner, including any one of the manners 1 and 2, which may be pre-agreed by the transmitting and receiving parties according to the protocol, or may be through signaling.
- the peer is notified, so the receiving device can know which phase to phase shift the second signal.
- the method may further include:
- the receiving end device obtains a phase error of the PTRS according to the original PTRS and the received PTRS estimation, obtains a phase error of the data signal by filtering and/or interpolation, and performs phase error on the received data signal by using a phase error of the data signal. Compensation, finally demodulating the data signal obtained by phase error compensation.
- This step can be understood as a specific implementation of the PT/2 BPSK modulated data signal by the receiving end device according to the pi/2 BPSK modulated PTRS in the received OFDM symbol.
- first signal and the second signal may be understood as OFDM signals, and the OFDM signals may comprise one or more OFDM symbols.
- the OFDM symbol transmitted by the transmitting end device includes a pi/2BPSK modulated data signal, and a pi/2 BPSK modulated PTRS, which includes QPSK modulation in the OFDM symbol in the prior art.
- the randomness of the PTRS is increased. Among them, the greater the randomness, the more stable the performance of the system, thus contributing to the good performance of the single carrier low PAPR.
- FIG. 12 is a schematic diagram showing another information transmission method provided by the present application.
- the information processing process in the scenario of performing the phase shifting step and the step of performing the insertion step is performed, which specifically includes:
- the transmitting end device inserts the phase shifted PTRS (ie, pi/2 BPSK modulated PTRS) into the pi/2BPSK modulated data signal to obtain a second sequence (ie, the first signal).
- the phase shifted PTRS ie, pi/2 BPSK modulated PTRS
- the step S204 is implemented by, for example but not limited to, the following manner 3 or mode 4:
- Manner 3 The transmitting end device performs phase shift on each BPSK symbol in the first signal according to the order of the BPSK symbols in the first signal, in a pi/2 increment rule. Or, according to the order of the BPSK symbols in the first signal, the BPSK symbols in the first signal are phase-shifted by a pi/2 decreasing law.
- This mode 3 can be understood as that the transmitting end device phase shifts the data signal and the PTRS as a whole.
- S204 is implemented by mode 3
- the implementation process of this embodiment is as shown in FIG.
- a schematic diagram of the phase shift amount of the BPSK symbol in the first signal can be referred to FIG. 8 , and details are not described herein again.
- the insertion position of each PTRS block in the BPSK sequence of the data signal can be known, so that the data signal and the PTRS can be phase-shifted as a whole before the insertion is performed. .
- Manner 4 The transmitting end device performs phase shift on each BPSK symbol in the PTRS according to the order of the BPSK symbols in the PTRS, in a pi/2 increment or decrement; and the law of increasing or decreasing by pi/2, Each BPSK symbol in the BPSK modulated data signal is phase shifted to obtain a first signal (ie, a second sequence).
- This mode 4 can be understood as that the transmitting end device independently phase shifts the data signal and the PTRS.
- S204 is implemented by mode 4
- the implementation process of this embodiment is as shown in FIG. 14.
- a schematic diagram of the phase shift amount of the BPSK symbol in the first signal can be referred to FIG. 10, and details are not described herein again.
- S208 to S210 Reference may be made to S108 to S110. Of course, the present application is not limited thereto.
- the method may further include S211.
- S211 can refer to S111, although the application is not limited thereto.
- the modulation mode of the data signal may be QPSK or 16QAM or the like in addition to pi/2 BPSK.
- the modulation mode of the preset PTRS may be, in addition to BPSK or pi/2 BPSK, QPSK or the like.
- the modulation mode of the preset PTRS is BPSK.
- the transmitting end device determines that the modulation mode of the data signal is pi/2 BPSK, phase shifting the BPSK-modulated PTRS to obtain a pi/2 BPSK-modulated PTRS, and the specific implementation process can refer to the above. If it is determined that the modulation mode of the data signal is not pi/2 BPSK, the BPSK-modulated PTRS is not phase-shifted.
- the receiving device performs the steps corresponding to the transmitting device, and details are not described herein again.
- Table 3 an actual example of the correspondence between the modulation mode of the data signal and the modulation mode of the PTRS is as shown in Table 3:
- the modulation mode of the preset PTRS is QPSK.
- the modulation mode of the PTRS is modified from QPSK to pi/2 BPSK, and then the QPSK symbol sequence of the PTRS is demodulated to obtain the PTRS.
- the bit sequence extracts a part of the bit sequence from the bit sequence of the PTRS to form a new PTRS bit sequence, and performs pi/2 BPSK modulation on the bit sequence of the new PTRS.
- the pi/2 BPSK modulation process can refer to the above.
- the part of the bit sequence that is taken out from the PTRS bit sequence may be pre-defined by the transmitting and receiving parties, or may be configured by using a signaling method, which is not limited in this application. If the transmitting device determines that the modulation mode of the data signal is not pi/2 BPSK, the processing is performed in the manner of the prior art. Correspondingly, the receiving device performs the steps corresponding to the transmitting device, and details are not described herein again. In this case, an actual example of the correspondence between the modulation mode of the data signal and the modulation mode of the PTRS is shown in Table 4:
- This embodiment includes an information transmission method, specifically:
- the transmitting end generates an orthogonal frequency division multiplexing OFDM symbol, where the OFDM symbol includes a phase reference signal PTRS modulated by ⁇ pi/2 binary phase shift keying BPSK; and the transmitting end transmits the OFDM symbol.
- the method may further include performing phase shift on the BPSK modulated PTRS to obtain the pi/2 BPSK modulated PTRS; wherein the PTRS includes one or more PTRS blocks, and each PTRS The block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are phase shifted in accordance with the pi/2 increment rule.
- phase shifting the BPSK symbols in each PTRS block according to a pi/2 increment rule includes: phase shifting the PTRS according to a position of the PTRS symbol within the OFDM symbol; or, according to the PTRS symbol The position in the PTRS sequence phase shifts the PTRS.
- the sending end may further perform power lifting on the PTRS symbol, and the sending end may determine a lifting power value according to a modulation mode of the data signal in the OFDM symbol.
- the transmitting end may further determine a modulation mode of the data signal according to a modulation and coding scheme MCS.
- the OFDM symbol is a discrete Fourier transform single carrier DFT-s-OFDM symbol.
- the transmitting end may include a processing unit, configured to generate the orthogonal frequency division multiplexing OFDM symbol, and the sending end further includes a sending unit, configured to send the OFDM symbol.
- the transmitting end may include a processor and a transmitter for generating an OFDM symbol and transmitting the OFDM symbol, respectively.
- the transmitting device can be a chip or chip system.
- the base station and/or the network device may also directly define the sequence of the PTRS as pi/2 BPSK, and this step may also be a signaling or Other configuration methods.
- This definition can be used for scenes of all modulation modes.
- the phase shift value of the PTRS may be independent of its position before the DFT, and may also be related to the position before the DFT.
- the network side device and/or the terminal device increase or decrease the phase of the BPSK sequence. Or multiplying the BPSK sequence by an exponential signal corresponding to the phase value, such as exp(1j* phase shift value), to determine the PTRS sequence of the pi/2 BPSK:
- phase shift value of the i-th PTRS may be ⁇ +(i-1)*pi/2, or ⁇ +i*pi/2, or ⁇ +(i+1)*pi/2, where ⁇ is the initial phase shift value of PTRS, which can be 0 by default;
- the phase shift value of the ith PTRS can also be other methods, such as the phase between each PTRS block Shift independent, or the initial phase shift value of each PTRS block is independent, please refer to the above;
- the phase shift value is related to its position in the modulation symbol before the DFT: the position of the PTRS in the modulation symbol/signal before the DFT can be determined first, for example, the total number of modulation symbols/signals before the DFT is N sym , number 0,1,...,N sym -1.
- the phase shift value is ⁇ +I PTRS-i * Pi/2, or its phase shift value is ⁇ + (I PTRS-i -1) * pi / 2, or its phase shift value is ⁇ + (I PTRS - i +1) * pi / 2, where ⁇ is included
- the initial phase shift value of all modulation symbols before the DFT of the data can be defaulted to zero.
- the specific phase shift implementation process may refer to the above.
- the modulation mode of the data or the Physical Uplink Sharing Channel is pi/2BPSK
- the sequence of the PTRS is pi.
- /2 BPSK otherwise QPSK, further phase shift or offset the QPSK modulated PTRS to reduce the PAPR effect. Determining a sequence of pi/2 QPSK according to a phase shift of pi/2 according to QPSK modulated symbols, or determining a phase shift of pi/4 according to QPSK modulated symbols to determine pi/4
- the sequence of QPSK is
- the network device and/or the terminal device determines a phase shift of the pi/2 corresponding to a configuration of a sequence of pi/2 QPSK. In still another embodiment, the network device and/or the terminal device may also It is a configuration in which the network device and/or the terminal device determines a phase shift of pi/4 corresponding to a sequence of pi/4 QPSK.
- the modulation mode of the data or PUSCH is not the sequence of the PTRS corresponding to the QPSK, and may be a clockwise moving/rotating or counterclockwise moving/rotating QPSK modulation symbol, or the amplitude of the PTRS symbol is the same as the amplitude of the QPSK, and each The phase difference between two adjacent PTRS symbols is pi/2, or the amplitude of the PTRS symbol is the same as the amplitude of QPSK, and the phase difference between every two adjacent PTRS symbols is -pi/2, as shown in the following table. Show.
- the initial phase value may be based on the UE configuration, such as different initial configuration values of different UE configurations, to increase the inter-UE PTRS sequence. Randomness; its initial phase value may also be related to the position of all PT symbols in the PTRS before the DFT, such as by adjusting the initial phase value, so that the PUSCH or data adjacent to the PTRS block is on the PTRS symbol adjacent to it.
- the phase difference is not equal to an integer multiple of pi, or the phase difference between the two is reduced to reduce its effect on PAPR.
- the QPSK symbol may be replaced by an Outer Most Constellation Point (OMCP) in a given modulation mode or modulation order, and the outermost constellation point refers to a given modulation mode or
- OMCP Outer Most Constellation Point
- the sequence of PTRS is pi/2BPSK
- the amplitude of the PTRS is power-up (Power Boosting, regardless of the modulation mode or the modulation order).
- PB power-up
- the specific value of the power boost may be related to the modulation mode or modulation order or MCS. For a given modulation mode or modulation order, the power is raised to the same power as the outermost constellation point, as shown in the following table:
- the data or the power of the PUSCH can be reduced. It can be understood that the data or the PUSCH needs to be reduced in power and PTRS.
- the cost is related to the power value of the PTRS uplift. If the power of the PTRS is the same, the more the PTRS is, the more the data power is reduced. If the PTRS has the same overhead, the power value of the PTRS is increased. More, the more data power is reduced.
- Table 6 can also be implemented by power lifting of Table 5, or the outermost constellation point can be realized by power lifting the QPSK constellation point, and the lifting power value is the same as Table 7.
- the value of the power boost has a fixed value according to the modulation order.
- the value of the power boost may also be configured by signaling, or may have a certain offset based on the value of Table 7.
- the amount of offset in different modulation modes can be the same or different. If the power of the PTRS can be raised to a power smaller than the OMCP power value, it can be avoided or reduced because the power is raised to the same OMCP power as the given modulation mode, causing the PTRS to fall into the nonlinear region of the power amplifier or other hardware. Loss of performance. Next, another embodiment of the present invention will be described.
- the receiving end may phase shift the received pi/2 BPSK PTRS signal to obtain a BPSK PTRS receiving signal, which is divided by BPSK.
- the BPSK PTRS sequence may be phase shifted to obtain a pi /2 BPSK PTRS sequence, using the PTRS signal of the received pi/2 BPSK, dividing by the PTRS sequence of pi/2 BPSK, or multiplying the conjugate of the PTRS sequence of pi/2 BPSK to estimate the phase noise.
- the phase noise is used to demodulate data.
- the multiplication here can be a pointer multiplication operation, and the division can be a point division operation.
- the phase shift value of the phase shift of the PTRS received signal and/or the PTRS may be determined by the position of the PTRS received signal and/or the sequence of the PTRS before the DFT, such as the modulation before the DFT.
- phase shift value of the PTRS received signal for I PTRS-i is -( ⁇ + I PTRS - i * pi / 2), or its phase shift value is - ( ⁇ + (I PTRS - i -1) * pi / 2 ), or its phase shift value is -( ⁇ +(I PTRS-i +1)*pi/2), or the PTRS symbol phase shift value of position I PTRS-i in the PTRS sequence is ⁇ +I PTRS-i * Pi/2, or its phase shift value is ⁇ + (I PTRS-i -1) * pi / 2, or its phase shift value is ⁇ + (I PTRS - i +1) * pi / 2, where ⁇ is included
- phase shift value of the phase shift of the PTRS received signal and/or the PTRS may be independent of the position of the PTRS received signal and/or the PTRS sequence before the DFT, and the signal is received by the PTRS.
- the phase shift value of the ith PTRS received signal may be -( ⁇ +(i-1)*pi/2 ), or -( ⁇ +i*pi/2), or -( ⁇ +(i+1)*pi/2), or the phase shift value of the ith PTRS symbol in the PTRS sequence may be ⁇ +(i- 1) *pi/2, or ⁇ +i*pi/2, or ⁇ +(i+1)*pi/2, where ⁇ is the initial phase shift value of PTRS, which can be defaulted to 0; the phase of the ith PTRS
- the value of the shift can also be other methods, such as the phase shift between each PTRS block is independent, or the initial phase shift value of each PTRS block is independent, as described above;
- the processing of the received signal and/or PTRS sequence of the PTRS by the above two receiving ends can also be used for scenes in which the sequence of PTRS is other sequences, such as pi/2 QPSK, pi/4 QPSK, QPSK rotating clockwise or counterclockwise. , pi/2OMCP, pi/4OMCP, OMCP rotating clockwise or counterclockwise.
- the embodiment includes an information transmission method, specifically, the method includes: receiving, by the receiving end, an orthogonal frequency division multiplexing OFDM symbol, where the OFDM symbol comprises a phase reference signal PTRS modulated by a ⁇ pi/2 binary phase shift keying BPSK; The receiving end demodulates the data signal according to the pi/2 BPSK modulated PTRS.
- the method further includes phase shifting the BPSK modulated PTRS sequence to obtain the pi/2 BPSK modulated PTRS sequence; wherein the PTRS includes one or more PTRS blocks, each PTRS The block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are phase shifted in accordance with the pi/2 increment rule.
- the receiving end performs phase shifting on the rule that the BPSK symbol is incremented by pi/2 in each PTRS block, and may perform phase shifting on the PTRS according to the position of the PTRS symbol in the OFDM symbol; or Phase shifting of the PTRS according to the position of the PTRS symbol in the PTRS sequence.
- the OFDM symbol is a discrete Fourier transform single carrier DFT-s-OFDM symbol.
- the receiving end may include a receiving unit for receiving the OFDM symbol, and the receiving end may further include a processing unit for demodulating the data signal.
- the receiving end may include a receiver and a processor for receiving OFDM symbols and demodulating data signals, respectively.
- the transmitting device can be a chip or chip system.
- each network element such as a transmitting end device or a receiving end device.
- each network element such as a transmitting end device or a receiving end device.
- it includes hardware structures and/or software modules corresponding to the execution of the respective functions.
- the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
- the embodiment of the present application may perform the division of the function module on the transmitting end device or the receiving end device according to the foregoing method example.
- each functional module may be divided according to each function, or two or more functions may be integrated into one processing module.
- the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner. The following is an example of dividing each functional module by using corresponding functions.
- the embodiment of the present application further provides an information transmission device, which may be a transmitting device.
- the transmitting device can be used to perform the steps performed by the transmitting device in FIG. 6 or FIG.
- the embodiment of the present application further provides an information transmission device, which may be a receiving device.
- the receiving device can be used to perform the steps performed by the receiving device in FIG. 6 or FIG.
- the transmitting device may be a terminal.
- Figure 15 shows a simplified schematic diagram of the terminal structure. It is convenient for understanding and illustration.
- the terminal uses a mobile phone as an example.
- the terminal includes a processor, a memory, a radio frequency circuit, an antenna, and an input/output device.
- the processor is mainly used for processing communication protocols and communication data, and controlling terminals, executing software programs, processing data of software programs, and the like.
- Memory is primarily used to store software programs and data.
- the RF circuit is mainly used for the conversion of the baseband signal and the RF signal and the processing of the RF signal.
- the antenna is mainly used to transmit and receive RF signals in the form of electromagnetic waves.
- Input and output devices such as touch screens, display screens, keyboards, etc., are primarily used to receive user input data and output data to the user. It should be noted that some types of terminals may not have input and output devices.
- the processor When the data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
- the radio frequency circuit performs radio frequency processing on the baseband signal, and then sends the radio frequency signal to the outside through the antenna in the form of electromagnetic waves.
- the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
- the memory may also be referred to as a storage medium or a storage device or the like.
- the memory may be independent of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
- the antenna and the radio frequency circuit having the transceiving function can be regarded as the transceiving unit of the terminal, and the processor having the processing function can be regarded as the processing unit of the terminal.
- the terminal includes a transceiver unit 1501 and a processing unit 1502.
- the transceiver unit can also be referred to as a transceiver, a transceiver, a transceiver, and the like.
- the processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, and the like.
- the device for implementing the receiving function in the transceiver unit 1501 can be regarded as a receiving unit, and the device for implementing the sending function in the transceiver unit 1501 is regarded as a sending unit, that is, the transceiver unit 1501 includes a receiving unit and a sending unit.
- the transceiver unit may also be referred to as a transceiver, a transceiver, or a transceiver circuit.
- the receiving unit may also be referred to as a receiver, a receiver, or a receiving circuit or the like.
- the transmitting unit may also be referred to as a transmitter, a transmitter, or a transmitting circuit, and the like.
- processing unit 1502 is configured to perform any one or more of steps S102-S106 of FIG. 6, and/or other steps in the application.
- the transceiver unit 1502 performs the steps performed by the transmitting device in S108 of FIG. 6, and/or other steps in the present application.
- processing unit 1502 is configured to perform any one or more of steps S202-S206 in FIG. 12, and/or other steps in the application.
- the transceiver unit 1502 performs the steps performed by the transmitting device in S208 of FIG. 12, and/or other steps in the present application.
- the receiving device may also be a base station.
- Figure 16 shows a schematic diagram of a simplified base station structure.
- the base station includes a 1601 part and a 1602 part.
- the 1601 part is mainly used for the transmission and reception of radio frequency signals and the conversion of radio frequency signals and baseband signals; the 1602 part is mainly used for baseband processing and control of base stations.
- Section 1601 can be generally referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver.
- the portion 1602 is typically the control center of the base station and may be generally referred to as a processing unit for controlling the base station to perform the steps performed by the receiving end device in FIG. 6 or FIG. 12 above.
- a processing unit for controlling the base station to perform the steps performed by the receiving end device in FIG. 6 or FIG. 12 above.
- the transceiver unit of the 1601 part which may also be called a transceiver, or a transceiver, etc., includes an antenna and a radio frequency unit, wherein the radio frequency unit is mainly used for radio frequency processing.
- the device for implementing the receiving function in the 1601 portion may be regarded as a receiving unit
- the device for implementing the transmitting function may be regarded as a transmitting unit, that is, the 1601 portion includes a receiving unit and a transmitting unit.
- the receiving unit may also be referred to as a receiver, a receiver, or a receiving circuit, etc.
- the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit or the like.
- the 1602 portion may include one or more boards, each of which may include one or more processors and one or more memories for reading and executing programs in the memory to implement baseband processing functions and for base stations control. If multiple boards exist, the boards can be interconnected to increase processing power. As an optional implementation manner, multiple boards share one or more processors, or multiple boards share one or more memories, or multiple boards share one or more processes at the same time. Device.
- the transceiver unit is operative to perform the steps performed by the receiving device in S108 of FIG. 6, and/or other steps in the application.
- the processing unit is operative to perform any one or more of steps S110-S111 in FIG. 6, and/or other steps in the application.
- the transceiver unit is operative to perform the steps performed by the receiving device in S208 of FIG. 12, and/or other steps in the application.
- the processing unit is operative to perform any one or more of steps S110-S111 in FIG. 12, and/or other steps in the application.
- the transmitting device may be a base station.
- a simplified schematic diagram of the base station structure is shown in FIG.
- the transceiver unit is operative to perform the steps performed by the transmitting device in S108 of FIG. 6, and/or other steps in the present application.
- the processing unit is operative to perform any one or more of steps S102-S106 in FIG. 6, and/or other steps in the application.
- the transceiver unit is operative to perform the steps performed by the transmitting device in S208 of FIG. 12, and/or other steps in the present application.
- the processing unit is operative to perform any one or more of steps S202-S206 in FIG. 12, and/or other steps in the application.
- the receiving device may be a terminal.
- a simplified schematic diagram of the terminal structure is shown in FIG.
- the transceiver unit is operative to perform the steps performed by the receiving device in S108 of FIG. 6, and/or other steps in the application.
- the processing unit is operative to perform any one or more of steps S110-S111 in FIG. 6, and/or other steps in the application.
- the transceiver unit is operative to perform the steps performed by the receiving device in S208 of FIG. 12, and/or other steps in the application.
- the processing unit is configured to perform any one or more of steps S210-S211 in FIG. 12, and/or other steps in the application.
- the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
- a software program 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 accordance with embodiments of the present application are generated in whole or in part.
- the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
- the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.).
- the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device that includes one or more servers, data centers, etc. that can be integrated with the media.
- the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)) or the like.
- a magnetic medium eg, a floppy disk, a hard disk, a magnetic tape
- an optical medium eg, a DVD
- a semiconductor medium such as a solid state disk (SSD)
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Abstract
Description
实现方式 | 数据信号的相移规律 | PTRS的相移规律 |
实现方式1 | pi/2递增 | pi/2递增 |
实现方式2 | pi/2递增 | pi/2递减 |
实现方式3 | pi/2递减 | pi/2递增 |
实现方式4 | pi/2递减 | pi/2递减 |
实现方式 | 数据信号的相移规律 | PTRS的相移规律 |
实现方式1a | pi/2递减 | pi/2递减 |
实现方式2a | pi/2递减 | pi/2递增 |
实现方式3a | pi/2递增 | pi/2递减 |
实现方式4a | pi/2递增 | pi/2递增 |
数据信号的调制模式 | PTRS的调制模式 |
pi/2 BPSK | pi/2 BPSK |
BPSK | BPSK |
QPSK | BPSK |
16QAM | BPSK |
数据信号的调制模式 | PTRS的调制模式 |
pi/2 BPSK | pi/2 BPSK |
BPSK | QPSK |
QPSK | QPSK |
16QAM | QPSK |
数据信号的调制模式 | PTRS的调制模式/序列 |
pi/2 BPSK | pi/2 BPSK |
BPSK | {pi/2 QPSK,pi/4 QPSK,顺时针或逆时针移动的QPSK} |
QPSK | {pi/2 QPSK,pi/4 QPSK,顺时针或逆时针移动的QPSK} |
16QAM | {pi/2 QPSK,pi/4 QPSK,顺时针或逆时针移动的QPSK} |
64QAM | {pi/2 QPSK,pi/4 QPSK,顺时针或逆时针移动的QPSK} |
数据信号的调制模式 | PTRS的调制模式/序列 |
pi/2 BPSK | pi/2 BPSK |
BPSK | {pi/2 OMCP,pi/4 OMCP,顺时针或逆时针移动的OMCP} |
QPSK | {pi/2 OMCP,pi/4 OMCP,顺时针或逆时针移动的OMCP} |
16QAM | {pi/2 OMCP,pi/4 OMCP,顺时针或逆时针移动的OMCP} |
64QAM | {pi/2 OMCP,pi/4 OMCP,顺时针或逆时针移动的OMCP} |
数据信号的调制模式 | PTRS的PB值 |
pi/2 BPSK | 0dB |
BPSK | 0dB |
QPSK | 0dB |
16QAM | 2.5527dB=10*lg((3+3j)^2/10) |
64QAM | 3.6798dB=10*lg((7+7j)^2/42) |
256QAM | 4.2276dB=10*lg((15+15j)^2/170) |
Claims (61)
- 一种信息传输方法,其特征在于,包括:生成正交频分复用OFDM符号,所述OFDM符号包括二分之πpi/2二进制相移键控BPSK调制后的数据信号,以及pi/2 BPSK调制后的相位参考信号PTRS;发送所述OFDM符号。
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:对BPSK调制后的PTRS进行相移,得到所述pi/2 BPSK调制后的PTRS;其中,所述PTRS包括一个或多个PTRS块,每一PTRS块包括一个或多个BPSK符号,对每一PTRS块中的BPSK符号按照pi/2递增的规律并对pi求模后进行相移。
- 根据权利要求2所述的方法,其特征在于,对每一PTRS块中的BPSK符号按照pi/2递增的规律并对pi求模后进行相移,包括:按照序列中的各BPSK符号的排列顺序,以mod(pi/2*k,pi)对所述序列中的各BPSK符号进行相移,k为BPSK符号在序列中的位置;其中,所述序列是将BPSK调制后的PTRS***BPSK调制后的数据信号得到的序列;或者,所述序列是按BPSK调制后得到的PTRS序列。
- 根据权利要求2所述的方法,其特征在于,对每一PTRS块中的BPSK符号按照pi/2递增的规律并对pi求模后进行相移,包括:按照序列中的各BPSK符号的排列顺序,以pi/2递增的规律,并对pi求模后,对所述序列中的各BPSK符号进行相移,其中,所述序列是将BPSK调制后的PTRS***BPSK调制后的数据信号得到的序列;或者,按照BPSK调制后的PTRS中的各BPSK符号的排列顺序,以pi/2递增的规律,并对pi求模后,对所述BPSK调制后的PTRS中的各BPSK符号进行相移。
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:对BPSK调制后的PTRS进行相移,得到所述pi/2 BPSK调制后的PTRS;其中,所述PTRS包括一个或多个PTRS块,每一PTRS块包括一个或多个BPSK符号,对每一PTRS块中的BPSK符号按照pi/2递减的规律进行相移。
- 根据权利要求5所述的方法,其特征在于,对每一PTRS块中的BPSK符号按照pi/2递减的规律进行相移,包括:按照序列中的各BPSK符号的排列顺序,以pi/2递减的规律,对所述序列中的各BPSK符号进行相移,其中,所述序列是将BPSK调制后的PTRS***BPSK调制后的数据信号得到的序列;或者,按照BPSK调制后的PTRS中的各BPSK符号的排列顺序,以pi/2递减的规律,对所述BPSK调制后的PTRS中的各BPSK符号进行相移。
- 根据权利要求2至6任一项所述的方法,其特征在于,所述方法还包括:在对BPSK调制后的PTRS进行相移之前,将所述BPSK调制后的PTRS***BPSK调制后的数据信号;或者,在对BPSK调制后的PTRS进行相移之后,将所述pi/2 BPSK调制后的PTRS***所述pi/2 BPSK调制后的数据信号。
- 根据权利要求1至7任一项所述的方法,其特征在于,所述方法还包括:根据调制编码方案MCS,确定所述数据信号的调制模式为pi/2 BPSK。
- 根据权利要求8所述的方法,其特征在于,根据MCS,确定所述数据信号的调制模式为pi/2 BPSK,包括:当所述MCS大于等于0且小于等于预设值,确定所述数据信号的调制模式是pi/2 BPSK。
- 根据权利要求1至9任一项所述的方法,其特征在于,所述OFDM符号为离散傅里叶变换单载波DFT-s-OFDM符号。
- 一种信息传输方法,其特征在于,包括:接收正交频分复用OFDM符号,所述OFDM符号包括二分之πpi/2二进制相移键控BPSK调制后的数据信号,以及pi/2 BPSK调制后的相位参考信号PTRS;根据所述pi/2 BPSK调制后的PTRS,解调所述pi/2 BPSK调制后的数据信号。
- 根据权利要求11所述的方法,其特征在于,根据所述pi/2 BPSK调制后的PTRS,解调所述pi/2 BPSK调制后的数据信号,包括:对所述pi/2 BPSK调制后的PTRS进行相移;其中,所述PTRS包括一个或多个PTRS块,每一PTRS块包括一个或多个BPSK符号,对每一PTRS块中的BPSK符号按照pi/2递增的规律进行相移;根据相移后的PTRS,解调所述pi/2 BPSK调制后的数据信号。
- 根据权利要求12所述的方法,其特征在于,对每一PTRS块中的BPSK符号按照pi/2递增的规律进行相移,包括:按照所述OFDM符号中的各BPSK符号的排列顺序,以pi/2递增的规律,对所述OFDM符号中的各BPSK符号进行相移;或者,按照所述pi/2 BPSK调制后的PTRS中的各BPSK符号的排列顺序,以pi/2递增的规律,对所述pi/2 BPSK调制后的PTRS中的各BPSK符号进行相移。
- 根据权利要求11所述的方法,其特征在于,根据所述pi/2 BPSK调制后的PTRS,解调所述pi/2 BPSK调制后的数据信号,包括:对所述pi/2 BPSK调制后的PTRS进行相移;其中,所述PTRS包括一个或多个PTRS块,每一PTRS块包括一个或多个BPSK符号,对每一PTRS块中的BPSK符号按照pi/2递减的规律进行相移;根据相移后的PTRS,解调所述pi/2 BPSK调制后的数据信号。
- 根据权利要求14所述的方法,其特征在于,对每一PTRS块中的BPSK符号按照pi/2递减的规律进行相移,包括:按照所述OFDM符号中的各BPSK符号的排列顺序,以pi/2递减的规律,对所述OFDM符号中的各BPSK符号进行相移;或者,按照所述pi/2 BPSK调制后的PTRS中的各BPSK符号的排列顺序,以pi/2递减的规律,对所述pi/2 BPSK调制后的PTRS中的各BPSK符号进行相移。
- 根据权利要求11至15任一项所述的方法,其特征在于,所述方法还包括:根据调制编码方案MCS,确定所述数据信号的调制模式为是pi/2 BPSK。
- 根据权利要求16所述的方法,其特征在于,根据MCS,确定所述数据信号的调制模式是pi/2 BPSK,包括:当所述MCS是大于等于0且小于等于预设值,确定所述数据信号的调制模式是 pi/2 BPSK;其中,所述预设值是4、6或8。
- 根据权利要求11至17任一项所述的方法,其特征在于,所述OFDM符号为离散傅里叶变换单载波DFT-s-OFDM符号。
- 一种信息传输装置,其特征在于,包括:处理单元,用于生成正交频分复用OFDM符号,所述OFDM符号包括二分之πpi/2二进制相移键控BPSK调制后的数据信号,以及pi/2 BPSK调制后的相位参考信号PTRS;发送单元,用于发送所述OFDM符号。
- 根据权利要求19所述的装置,其特征在于,所述处理单元还用于:对BPSK调制后的PTRS进行相移,得到所述pi/2 BPSK调制后的PTRS;其中,所述PTRS包括一个或多个PTRS块,每一PTRS块包括一个或多个BPSK符号,对每一PTRS块中的BPSK符号按照pi/2递增的规律并对pi求模后进行相移。
- 根据权利要求20所述的装置,其特征在于,所述处理单元具体用于:按照序列中的各BPSK符号的排列顺序,以mod(pi/2*k,pi)对所述序列中的各BPSK符号进行相移,k为BPSK符号在序列中的位置;其中,所述序列是将BPSK调制后的PTRS***BPSK调制后的数据信号得到的序列;或者,所述序列是按BPSK调制后得到的PTRS序列。
- 根据权利要求20所述的装置,其特征在于,所述处理单元具体用于:按照序列中的各BPSK符号的排列顺序,以pi/2递增的规律,并对pi求模后,对所述序列中的各BPSK符号进行相移,其中,所述序列是将BPSK调制后的PTRS***BPSK调制后的数据信号得到的序列;或者,按照BPSK调制后的PTRS中的各BPSK符号的排列顺序,以pi/2递增的规律,并对pi求模后,对所述BPSK调制后的PTRS中的各BPSK符号进行相移。
- 根据权利要求19所述的装置,其特征在于,所述处理单元还用于:对BPSK调制后的PTRS进行相移,得到所述pi/2 BPSK调制后的PTRS;其中,所述PTRS包括一个或多个PTRS块,每一PTRS块包括一个或多个BPSK符号,对每一PTRS块中的BPSK符号按照pi/2递减的规律进行相移。
- 根据权利要求23所述的装置,其特征在于,所述处理单元具体用于:按照序列中的各BPSK符号的排列顺序,以pi/2递减的规律,对所述序列中的各BPSK符号进行相移,其中,所述序列是将BPSK调制后的PTRS***BPSK调制后的数据信号得到的序列;或者,按照BPSK调制后的PTRS中的各BPSK符号的排列顺序,以pi/2递减的规律,对所述BPSK调制后的PTRS中的各BPSK符号进行相移。
- 根据权利要求20至24任一项所述的装置,其特征在于,所述处理单元还用于:在对BPSK调制后的PTRS进行相移之前,将所述BPSK调制后的PTRS***BPSK调制后的数据信号;或者,在对BPSK调制后的PTRS进行相移之后,将所述pi/2 BPSK调制后的PTRS***所述pi/2 BPSK调制后的数据信号。
- 根据权利要求19至25任一项所述的装置,其特征在于,所述处理单元还用 于:根据调制编码方案MCS,确定所述数据信号的调制模式是pi/2 BPSK。
- 根据权利要求26所述的装置,其特征在于,所述处理单元具体用于:当所述MCS大于等于0且小于等于预设值,确定所述数据信号的调制模式是pi/2 BPSK;其中,所述预设值是4、6或8。
- 根据权利要求19至27任一项所述的装置,其特征在于,所述OFDM符号为离散傅里叶变换单载波DFT-s-OFDM符号。
- 一种信息传输装置,其特征在于,包括:接收单元,用于接收正交频分复用OFDM符号,所述OFDM符号包括二分之πpi/2二进制相移键控BPSK调制后的数据信号,以及pi/2 BPSK调制后的相位参考信号PTRS;处理单元,用于根据所述pi/2 BPSK调制后的PTRS,解调所述pi/2 BPSK调制后的数据信号。
- 根据权利要求29所述的装置,其特征在于,所述处理单元具体用于:对所述pi/2 BPSK调制后的PTRS进行相移;根据相移后的PTRS,解调所述pi/2 BPSK调制后的数据信号;其中,所述PTRS包括一个或多个PTRS块,每一PTRS块包括一个或多个BPSK符号,对每一PTRS块中的BPSK符号按照pi/2递增的规律进行相移。
- 根据权利要求30所述的装置,其特征在于,所述处理单元具体用于:按照所述OFDM符号中的各BPSK符号的排列顺序,以pi/2递增的规律,对所述OFDM符号中的各BPSK符号进行相移;或者,按照所述pi/2 BPSK调制后的PTRS中的各BPSK符号的排列顺序,以pi/2递增的规律,对所述pi/2 BPSK调制后的PTRS中的各BPSK符号进行相移。
- 根据权利要求29所述的装置,其特征在于,所述处理单元具体用于:对所述pi/2 BPSK调制后的PTRS进行相移;根据相移后的PTRS,解调所述pi/2 BPSK调制后的数据信号;其中,所述PTRS包括一个或多个PTRS块,每一PTRS块包括一个或多个BPSK符号,对每一PTRS块中的BPSK符号按照pi/2递减的规律进行相移。
- 根据权利要求32所述的装置,其特征在于,所述处理单元具体用于:按照所述OFDM符号中的各BPSK符号的排列顺序,以pi/2递减的规律,对所述OFDM符号中的各BPSK符号进行相移;或者,按照所述pi/2 BPSK调制后的PTRS中的各BPSK符号的排列顺序,以pi/2递减的规律,对所述pi/2 BPSK调制后的PTRS中的各BPSK符号进行相移。
- 根据权利要求29至33任一项所述的装置,其特征在于,所述处理单元还用于:根据调制编码方案MCS,确定所述数据信号的调制模式是pi/2 BPSK。
- 根据权利要求29至34任一项所述的装置,其特征在于,所述OFDM符号为离散傅里叶变换单载波DFT-s-OFDM符号。
- 一种信息传输方法,其特征在于,包括:生成正交频分复用OFDM符号,所述OFDM符号包括二分之πpi/2二进制相移键控BPSK调制后的相位参考信号PTRS;发送所述OFDM符号。
- 根据权利要求36所述的方法,其特征在于,所述方法还包括:对BPSK调制后的PTRS进行相移,得到所述pi/2 BPSK调制后的PTRS;其中,所述PTRS包括一个或多个PTRS块,每一PTRS块包括一个或多个BPSK符号,对每一PTRS块中的BPSK符号按照pi/2递增的规律进行相移。
- 根据权利要求37所述的方法,其特征在于,对每一PTRS块中的BPSK符号按照pi/2递增的规律进行相移,包括:按照PTRS符号在所述OFDM符号内的位置对PTRS进行相移;或者,按照PTRS符号在PTRS序列中的位置对PTRS进行相移。
- 根据权利要求36至38任一项所述的方法,其特征在于,对所述PTRS符号进行功率抬升,所述对所述PTRS符号进行功率抬升包括:根据所述OFDM符号中数据信号的调制模式确定抬升功率值。
- 根据权利要求39所述的方法,其特征在于,所述方法还包括:根据调制编码方案MCS,确定所述数据信号的调制模式。
- 根据权利要求36至40任一项所述的方法,其特征在于,所述OFDM符号为离散傅里叶变换单载波DFT-s-OFDM符号。
- 一种信息传输方法,其特征在于,包括:接收正交频分复用OFDM符号,所述OFDM符号包括二分之πpi/2二进制相移键控BPSK调制后的相位参考信号PTRS;根据所述pi/2 BPSK调制后的PTRS,解调数据信号。
- 根据权利要求42所述的方法,其特征在于,所述方法还包括:对BPSK调制后的PTRS序列进行相移,得到所述pi/2 BPSK调制后的PTRS序列;其中,所述PTRS序列包括一个或多个PTRS块,每一PTRS块包括一个或多个BPSK符号,对每一PTRS块中的BPSK符号按照pi/2递增的规律进行相移。
- 根据权利要求43所述的方法,其特征在于,对每一PTRS块中的BPSK符号按照pi/2递增的规律进行相移,包括:按照PTRS符号在所述OFDM符号内的位置对PTRS进行相移;或者,按照PTRS符号在PTRS序列中的位置对PTRS进行相移。
- 根据权利要求42所述的方法,其特征在于,所述方法还包括:对所述pi/2 BPSK调制后的PTRS接收信号进行相移,得到所述BPSK调制后的PTRS接收信号;其中,所述PTRS接收信号包括一个或多个PTRS块,每一PTRS块包括一个或多个pi/2 BPSK符号,对每一PTRS块中的pi/2 BPSK符号按照pi/2递增的规律进行相移。
- 根据权利要求45所述的方法,其特征在于,对每一PTRS块中的pi/2 BPSK符号按照pi/2递增的规律进行相移,包括:按照PTRS符号在所述OFDM符号内的位置对PTRS进行相移;或者,按照PTRS符号在PTRS接收信号中的位置对PTRS进行相移。
- 根据权利要求42至46任一项所述的方法,其特征在于,所述OFDM符号为离散傅里叶变换单载波DFT-s-OFDM符号。
- 一种信息传输装置,其特征在于,包括:处理单元,用于生成正交频分复用OFDM符号,所述OFDM符号包括二分之πpi/2二进制相移键控BPSK调制后的相位参考信号PTRS;发送单元,用于发送所述OFDM符号。
- 根据权利要求48所述的装置,其特征在于,所述处理单元具体用于:对BPSK调制后的PTRS进行相移,得到所述pi/2 BPSK调制后的PTRS;其中,所述PTRS包括一个或多个PTRS块,每一PTRS块包括一个或多个BPSK符号,对每一PTRS块中的BPSK符号按照pi/2递增的规律进行相移。
- 根据权利要求49所述的装置,其特征在于,处理单元用于对每一PTRS块中的BPSK符号按照pi/2递增的规律进行相移,包括:所述处理单元按照PTRS符号在所述OFDM符号内的位置对PTRS进行相移;或者,所述处理单元按照PTRS符号在PTRS序列中的位置对PTRS进行相移。
- 根据权利要求48至50任一项所述的装置,其特征在于,所述处理单元用于对所述PTRS符号进行功率抬升,所述处理单元用于对所述PTRS符号进行功率抬升包括:所述处理单元根据所述OFDM符号中数据信号的调制模式确定抬升功率值。
- 根据权利要求51所述的装置,其特征在于,所述处理单元还用于根据调制编码方案MCS,确定所述数据信号的调制模式。
- 根据权利要求48至52任一项所述的装置,其特征在于,所述OFDM符号为离散傅里叶变换单载波DFT-s-OFDM符号。
- 一种信息传输装置,其特征在于,包括:接收单元,用于接收正交频分复用OFDM符号,所述OFDM符号包括二分之πpi/2二进制相移键控BPSK调制后的相位参考信号PTRS;处理单元,用于根据所述pi/2 BPSK调制后的PTRS,解调数据信号。
- 根据权利要求54所述的装置,其特征在于,所述处理单元,还用于对BPSK调制后的PTRS进行相移,得到所述pi/2 BPSK调制后的PTRS;其中,所述PTRS包括一个或多个PTRS块,每一PTRS块包括一个或多个BPSK符号,所述处理单元还用于对每一PTRS块中的BPSK符号按照pi/2递增的规律进行相移。
- 根据权利要求55所述的装置,其特征在于,所述处理单元还用于对每一PTRS块中的BPSK符号按照pi/2递增的规律进行相移,包括:所述处理单元还用于按照PTRS符号在所述OFDM符号内的位置对PTRS进行相移;或者,所述处理单元还用于按照PTRS符号在PTRS序列中的位置对PTRS进行相移。
- 根据权利要求54所述的装置,其特征在于,所述处理单元,还用于对pi/2 BPSK调制后的PTRS接收信号进行相移,得到所述BPSK调制后的PTRS的接收信号;其中,所述PTRS接收信号包括一个或多个PTRS块,每一PTRS块包括一个或多个pi/2 BPSK符号,所述处理单元还用于对每一PTRS块中的pi/2 BPSK符号按照 pi/2递增的规律进行相移。
- 根据权利要求57所述的装置,其特征在于,所述处理单元还用于对每一PTRS块中的pi/2 BPSK符号按照pi/2递增的规律进行相移,包括:所述处理单元还用于按照PTRS符号在所述OFDM符号内的位置对PTRS进行相移;或者,所述处理单元还用于按照PTRS符号在PTRS接收信号中的位置对PTRS进行相移。
- 根据权利要求54至58任一项所述的装置,其特征在于,所述OFDM符号为离散傅里叶变换单载波DFT-s-OFDM符号。
- 一种计算机可读存储介质,其上存储有计算机程序,其特征在于,该程序被处理器执行时,使得如权利要求1至18或36至47任一项所述的方法被执行。
- 一种计算机程序产品,当其在计算机上运行时,使得所述计算机执行如权利要求1至18或36至47任一项所述的方法。
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