WO2018228400A1 - Method and apparatus for transmitting information - Google Patents

Abstract

Disclosed are a method and apparatus for transmitting information, relating to the technical field of communications and facilitating realising the full potential of the advantage of a low PAPR of a single carrier. The method comprises: generating an OFDM symbol, wherein the OFDM symbol comprises a pi/2 BPSK modulated data signal and a pi/2 BPSK modulated PTRS; and sending the OFDM symbol. The present application is applicable in an uplink single-carrier transmission scenario, and is also applicable in a downlink single-carrier transmission scenario.

Description

Information transmission method and device Technical field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to an information transmission method and apparatus.

Background technique

Factors such as Doppler effect, central frequency offset (CFO), and phase noise introduce phase errors into the reception of data signals in the communication system, resulting in degradation or even inoperability of the communication system. In order to solve the technical problem, the transmitting device can insert a phase tracking reference signal (PTRS) into the data 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.

In the communication system, since the single-carrier peak-to-average power ratio (PAPR) is low, the uplink waveform can be a single carrier. However, when a data signal is transmitted using a single carrier, if a PTRS is inserted into the data signal, the PAPR of the communication system is increased, so that the advantage of the single carrier cannot be well utilized.

Summary of the invention

The present application provides an information transmission method and apparatus, which contributes to the advantages of single carrier low PAPR.

In a first aspect, the present application provides an information processing method and apparatus.

In a possible design, 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 π) binary Phase shift keying (BPSK) modulated data signal, and pi/2 BPSK modulated PTRS. The technical solution can be applied to a single carrier transmission scenario. In the technical solution, the PTRS in the OFDM symbol is a pi/2 BPSK modulated PTRS. Compared with the prior art, 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.

In a possible design, 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.

In a possible design, 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 above provides two technical solutions for generating pi/2 BPSK modulated PTRS, neither of which limits the phase shift law between PTRS blocks. In addition, 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.

It should be noted that, in general, 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. Of course not limited to this. Therefore, if a BPSK symbol is included in a certain PTRS block, the BPSK symbol in the PTRS block is phase-shifted by pi/2 increment, and the pi/2 decrement rule is performed on the BPSK symbol in the PTRS block. 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.

In a possible design, 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.

In a possible design, 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.

In a possible design, 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.

In a possible design, 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.

In one possible design, the method may further include inserting the BPSK modulated PTRS into the BPSK modulated data signal prior to phase shifting the BPSK modulated PTRS.

In a possible design, 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.

Correspondingly, the present application also provides an information processing apparatus, which can implement the information processing method of the first aspect. For example, 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.

In one possible design, 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. Optionally, 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.

In one possible design, 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.

In a possible design, 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. Optionally, 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. Alternatively, 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.

In a possible design, 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. Optionally, 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. Alternatively, 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.

In one possible design, 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.

In one possible design, 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.

In a second aspect, the present application provides an information transmission method and apparatus.

In a possible design, 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. For a specific implementation manner and a beneficial effect of the pi/2 BPSK modulated data signal, reference may be made to the corresponding technical solution in the foregoing first aspect, and details are not described herein again.

In a possible design, 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. Optionally, when 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.

Correspondingly, 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.

In a possible implementation, 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.

In one possible design, 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. For the function of the processing unit, reference may be made to the corresponding technical solution in the foregoing first aspect, and details are not described herein again.

In one possible design, the processing unit is further configured to determine that the modulation mode of the data signal is pi/2 BPSK based on the MCS. Optionally, when 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.

In a third aspect, the present application also provides another information transmission method and apparatus.

In a possible design, the present application provides an information transmission method, and 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.

In a possible design, 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.

In a possible design, 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;

In a possible design, 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.

In a possible design, 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.

In a possible design, 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;

In a possible design, 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.

It can be understood that the 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.

Correspondingly, 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.

In a possible implementation, 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.

In one possible design, 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.

In a possible design, 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. Optionally, 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. Alternatively, 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.

In a possible design, 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. Optionally, 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. Alternatively, 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.

In a possible design, the processing unit is further configured to: according to the MCS, determine that the modulation mode of the data signal is pi/2 BPSK. Optionally, when 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.

In a possible design, the transmitting end generates an orthogonal frequency division multiplexing OFDM symbol, where the OFDM symbol includes a phase reference signal PTRS modulated by πpi/2 binary phase shift keying BPSK; the transmitting end transmits the OFDM symbol.

In the above-mentioned possible embodiments, 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. In one embodiment, 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. Optionally, 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. In still another embodiment, 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. In still another embodiment, the transmitting end may include a processor and a transmitter for generating an OFDM symbol and transmitting the OFDM symbol, respectively. In still another embodiment, the transmitting device can be a chip or chip system.

In an implementation manner of the foregoing possible design, phase shifting the pi/2 BPSK modulated PTRS received signal to obtain the BPSK modulated PTRS received signal; wherein the PTRS received signal includes one or more PTRS block, each PTRS block includes one or more pi/2 BPSK symbols, and the pi/2 BPSK symbols in each PTRS block are phase-shifted according to the pi/2 increment rule. As a possible implementation manner, 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.

In a possible design, 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 πpi/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. In one embodiment, 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. As an embodiment, 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. In still another embodiment, the receiving end may include a receiver and a processor for receiving OFDM symbols and demodulating data signals, respectively. In one embodiment, the transmitting device can be a chip or chip system.

In any of the possible designs provided above, 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.

It is to be understood that any of the devices or computer storage media or computer program products provided above are used to perform the corresponding methods provided above, and the beneficial effects that can be achieved by the methods provided above can be referred to the following specific implementations. The beneficial effects of the corresponding solutions in the manner are not described here.

DRAWINGS

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;

4 is a schematic diagram of a phase shift amount provided by the prior art;

FIG. 5 is a schematic diagram of simulation comparison of PAPR under different technical solutions provided in the prior art; FIG.

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.

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.

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.

detailed description

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. 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. 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. Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in future 5G networks, or terminals in future evolved PLMN networks, and the like. Of course, no application is not limited to this.

In a communication system, 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. Then, the 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 following sections explain some of the terms and related technologies involved in this article to facilitate understanding:

1), transmitting device, receiving device

The device at the transmitting end refers to a device that sends a data signal. Of course, 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. Of course, the receiving end device can also receive a reference signal or receive other signals, which is not limited in this application.

Wherein, in the uplink direction, the transmitting end device is a terminal, and the receiving end device is a base station. In the downlink direction, 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.

2), PTRS, data signal

PTRS is a signal known to both transceivers. Generally, 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. For example, if the modulation mode is BPSK or pi/2 BPSK, PTRS refers to a BPSK symbol sequence, and the BPSK symbol sequence includes one or more BPSK symbols (ie, BPSK modulation symbols). If the modulation mode is QPSK, the PTRS refers to a QPSK symbol sequence, and the QPSK symbol sequence includes one or more QPSK symbols (ie, QPSK modulation symbols). In order to more clearly describe the technical solutions provided by the present application, terms such as "PTSK modulated PTRS" and "pi/2 BPSK modulated PTRS" are referred to herein.

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. In some embodiments of the present application, 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. For example, 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.

It should be noted that since the signal is affected by noise and other factors during channel transmission, the received PTRS is often different from the original PTRS, and the received data signal is often different from the original data signal.

4), the first sequence, the second sequence

In some embodiments of the present application, 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.

In some embodiments of the present application, the concept of a second sequence is introduced. The second sequence is a sequence obtained by inserting the pi/2 BPSK modulated PTRS into the pi/2 BPSK modulated data signal.

The present application does 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.

In FIG. 2 and FIG. 3, two adjacent OFDM symbols mapped with PTRS are separated by one OFDM symbol without mapping PTRS, although the present application is not limited thereto. On the OFDM symbol to which the PTRS is mapped, 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.

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. It should be noted that FIG. 2 and FIG. 3 may be used in combination. For example, a signal distribution on an OFDM symbol mapped with a PTRS may be referred to FIG. 2, and a signal distribution on an OFDM symbol mapped with a PTRS may be referred to FIG. 3. In addition, in FIG. 2 and 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.

5), pi/2 (ie 1/2) BPSK

To achieve low PAPR, 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.

When the modulation mode of the PTRS is BPSK, the BPSK-modulated PTRS is inserted between the BPSK-modulated data signals to obtain a first sequence, as shown in (a) of FIG. Since the PTRS is not phase shifted in the prior art. Therefore, the magnitude of the phase shift amount of each BPSK symbol in the first sequence when the phase shift operation is performed is as shown in (b) of FIG. Among them, 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. Wherein, 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. For example, 1 in the second small square in (b) of FIG. 4 indicates that the phase shift coefficient of D ₂ is 1, and the phase shift amount is 1*pi/2=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. 5, 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. For example, when the abscissa PAPR=3, the ordinate CCDF is about 0.03, and the probability of PAPR>3 dB is 0.03. As can be seen from Fig. 5, 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).

It should be noted that, in the prior art, 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.

6), other terms

The term "plurality" as used herein refers to two or more.

The terms "first", "second" and the like are used herein to distinguish different objects and do not limit their order. For example, the first sequence and the second sequence are merely for distinguishing different sequences, and the order is not limited.

The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship; in the formula, the character "/" indicates that the contextual object is a "divide" relationship.

The technical solution provided by the present application is described below from the perspective of the information transmission method. It should be noted that, hereinafter, the processing procedure of a signal on an OFDM symbol mapped with PTRS is taken as an example for description.

FIG. 6 is a schematic diagram of an information transmission method provided by the present application. In this embodiment, 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:

S102: The transmitting end device determines a modulation mode of the data signal and a preset modulation mode of the PTRS.

In the uplink single carrier transmission scenario, 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. In the downlink single carrier transmission scenario, 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. In some embodiments of the present application, the MCS is greater than or equal to 0 and less than or equal to a preset value, and the modulation mode of the data signal is determined to be pi/2 BPSK; the preset value is 4, 6, or 8. Where MCS is an integer greater than or equal to zero.

S104: 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.

After S102, if the modulation mode of the data signal and the modulation mode of the preset PTRS are both pi/2 BPSK, 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.

Wherein, 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. In order to simplify the computational complexity of the transmitting and receiving parties, 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. When S106 is implemented by mode 1, the implementation process of this embodiment is as shown in FIG. 7. In this mode, since the data signal and the PTRS are phase-shifted as a whole, 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). For an explanation of the related content in (a) and (b) of FIG. 8, reference may be made to the above explanation of the relevant content in FIG. It should be noted that (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. In one implementation, the phase shift amount can be expressed as mod ((pi / 2) * k, 2pi), in this case, assuming m = 3, then, P ₁ is the phase shift amount (pi / 2) * 3=3pi/2, the transmitting device phase shifts P ₁ to obtain P ₁ *exp(1j*3pi/2)=-j*P ₁ . Assuming n=8, k=2, then the phase shift of P _k+1 is mod(pi/2*(8+2), 2pi)=pi, and the transmitter device phase shifts P _k+1 to get P _k+1 *exp(1j*pi)=-P _k+1 . Other examples are not listed one by one.

It can be understood that if the transmitting end device phase shifts each BPSK symbol in the first sequence by the pi/2 decreasing law, the pi/2 in (b) of FIG. 8 is modified to -pi/2. The resulting example is an example of each BPSK symbol in a BPSK modulated symbol sequence.

In the mode 1, 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. When S106 is implemented by mode 2, the implementation process of this embodiment is as shown in FIG. 9.

Several implementations of this approach are shown in Table 1:

Table 1

Method to realize Phase shift law of data signal Phase shift law of PTRS Implementation 1 Pi/2 increment Pi/2 increment Implementation 2 Pi/2 increment Pi/2 decrement Implementation 3 Pi/2 decrement Pi/2 increment Implementation 4 Pi/2 decrement Pi/2 decrement

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.

In the mode 2, 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. For an explanation of the related content in (a) and (b) of FIG. 10, reference may be made to the above explanation of the related content in FIG. 4 or FIG. It should be noted that (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. In FIG. 10, P ₁ is the phase shift amount is 0; when _k = 2, P k of phase shift of pi / 2, P _{k + 1} phase shift amount is pi. Other examples are not listed one by one.

Compared with the mode 1, in the mode 2, since the phase shift amount of the data signal and the phase shift amount of the PTRS are independent of the relative positions between the data signal and the PTRS, the complexity is low.

It can be understood that, according to FIG. 8 and FIG. 10, if the phase shift amount is 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. When the number of the numbers is an integer multiple of 4, the technical solution provided in FIG. 8 is equivalent to the technical solution provided in FIG. In addition, if the phase shift amount is mod (pi/2*k, pi), the number of BPSK symbols included in the PTRS block and the number of BPSK symbols of the data signal between the PTRS blocks are both integer multiples of 2, The technical solutions in the phase shift direction (ie, increasing pi/2 and decreasing pi/2) are equivalent, for example, the above-described implementations 1 to 4 are equivalent.

Figure 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. In addition, in FIG. 11, the dotted line which inserts a PTRS in the data signal, and the dotted line which shows the 1st of FIG.

S108: 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.

S110: 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.

In an uplink single carrier transmission scenario, the receiving device is a base station. In the downlink single carrier transmission scenario, 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.

If 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. The order of each time domain symbol is phase shifted by the pi/2 increments for each BPSK symbol in the second signal. In other words, if 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.

If 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.

Table 2

Method to realize Phase shift law of data signal Phase shift law of PTRS Implementation 1a Pi/2 decrement Pi/2 decrement Implementation 2a Pi/2 decrement Pi/2 increment Implementation 3a Pi/2 increment Pi/2 decrement Implementation 4a Pi/2 increment Pi/2 increment

It can be understood that 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.

Optionally, after S110, the method may further include:

S111: 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.

It will be understood that the first signal and the second signal may be understood as OFDM signals, and the OFDM signals may comprise one or more OFDM symbols.

In the information transmission method provided by the embodiment of the present application, 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. After the PTRS, 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. In this embodiment, 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:

S202: Reference may be made to S102 above, but the application is of course not limited thereto.

S204: 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 performs phase shift on the BPSK-modulated PTRS and BPSK modulated data signals.

S206: 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 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. When S204 is implemented by mode 3, the implementation process of this embodiment is as shown in FIG. For an explanation of the relevant content in this method, refer to the above. In addition, in this case, 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.

It should be noted that, before the insertion device performs the insertion, 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. When S204 is implemented by mode 4, the implementation process of this embodiment is as shown in FIG. 14. For an explanation of the relevant content in this method, refer to the above. In addition, in this case, 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.

Optionally, 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.

In some embodiments of the present application, the modulation mode of the preset PTRS is BPSK. In this case, if 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. 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 as shown in Table 3:

table 3

Modulation mode of data signal Modulation mode of PTRS Pi/2 BPSK Pi/2 BPSK BPSK BPSK QPSK BPSK 16QAM BPSK

In some embodiments of the present application, the modulation mode of the preset PTRS is QPSK. In this case, if the transmitting device determines that the modulation mode of the data signal is pi/2 BPSK, 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. Among them, the pi/2 BPSK modulation process can refer to the above. In addition, 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:

Table 4

Modulation mode of data signal Modulation mode of PTRS Pi/2 BPSK Pi/2 BPSK BPSK QPSK QPSK QPSK 16QAM QPSK

Next, another embodiment of the present invention will be described. 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 πpi/2 binary phase shift keying BPSK; and the transmitting end transmits the OFDM symbol. As an embodiment, 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. In one embodiment, 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. Optionally, 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. In still another embodiment, 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. In still another embodiment, the transmitting end may include a processor and a transmitter for generating an OFDM symbol and transmitting the OFDM symbol, respectively. In still another embodiment, the transmitting device can be a chip or chip system.

In still other embodiments, to simplify the impact of the PTRS sequence on the protocol, 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. Wherein, 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. In one embodiment, 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:

(1) The phase shift value is independent of its position in the modulation symbol before the DFT: the phase shift value of the i-th PTRS may be Δθ+(i-1)*pi/2, or Δθ+i*pi/2, or Δθ+(i+1)*pi/2, where Δθ 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;

(2) 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. If the position of the PTRS before the DFT is the set S _PTRS ={I _PTRS-1 , I _PTRS-2 ,...}, the phase shift value is Δθ+I _PTRS-i * Pi/2, or its phase shift value is Δθ + (I _PTRS-i -1) * pi / 2, or its phase shift value is Δθ + (I _{PTRS - i} +1) * pi / 2, where Δθ is included The initial phase shift value of all modulation symbols before the DFT of the data can be defaulted to zero.

Based on the determination of the phase shift value by the terminal device and/or the network device, the specific phase shift implementation process may refer to the above.

In still other embodiments of the present application, after the sequence of the PTRS is selected according to the modulation mode, the modulation mode of the data or the Physical Uplink Sharing Channel (PUSCH) is pi/2BPSK, and 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.

In one embodiment, 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 determination of the specific phase shift value can be referred to above.

In one embodiment, 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.

table 5

Modulation mode of data signal Modulation mode/sequence of PTRS Pi/2 BPSK Pi/2 BPSK BPSK {pi/2 QPSK, pi/4 QPSK, QPSK moving clockwise or counterclockwise} QPSK {pi/2 QPSK, pi/4 QPSK, QPSK moving clockwise or counterclockwise} 16QAM {pi/2 QPSK, pi/4 QPSK, QPSK moving clockwise or counterclockwise} 64QAM {pi/2 QPSK, pi/4 QPSK, QPSK moving clockwise or counterclockwise}

In an embodiment, if the sequence of the PTRS is QPSK moving clockwise or counterclockwise, 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.

In still another embodiment, 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 The constellation points with the largest amplitude values under the modulation order are shown in the following table:

Table 6

Modulation mode of data signal Modulation mode/sequence of PTRS Pi/2 BPSK Pi/2 BPSK BPSK {pi/2 OMCP, pi/4 OMCP, OMCP moving clockwise or counterclockwise} QPSK {pi/2 OMCP, pi/4 OMCP, OMCP moving clockwise or counterclockwise} 16QAM {pi/2 OMCP, pi/4 OMCP, OMCP moving clockwise or counterclockwise} 64QAM {pi/2 OMCP, pi/4 OMCP, OMCP moving clockwise or counterclockwise}

In still other embodiments of the present application, based on the foregoing embodiments, such as the sequence of PTRS is pi/2BPSK, and the amplitude of the PTRS is power-up (Power Boosting, regardless of the modulation mode or the modulation order). PB) to improve the estimation accuracy of PTRS. 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:

Table 7

Modulation mode of data signal PB value of PTRS 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)

In an embodiment, in order to ensure that the overall power of the DFT-s-OFDM symbol does not change, after the power is raised by the PTRS, 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.

In another embodiment, 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.

It should be understood that the value of the power boost has a fixed value according to the modulation order. For example, 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. After receiving the orthogonal frequency division multiplexing signal of the PTRS including the pi/2 BPSK, 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. a PTRS sequence, or a conjugate of a PTRS sequence multiplied by BPSK to estimate phase noise, the phase noise being used to demodulate data; in yet another embodiment, 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.

In one embodiment, 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. the total number of symbols / signals N _sym, numbered 0,1, ..., N _sym -1, if the position before the DFT is set PTRS _{S PTRS = {I PTRS-1} , I PTRS-2, ...}, then the position The phase shift value of the PTRS received signal for I _PTRS-i is -(Δθ + I _{PTRS - i} * pi / 2), or its phase shift value is - (Δθ + (I _{PTRS - i} -1) * pi / 2 ), or its phase shift value is -(Δθ+(I _PTRS-i +1)*pi/2), or the PTRS symbol phase shift value of position I _PTRS-i in the PTRS sequence is Δθ+I _PTRS-i * Pi/2, or its phase shift value is Δθ + (I _PTRS-i -1) * pi / 2, or its phase shift value is Δθ + (I _{PTRS - i} +1) * pi / 2, where Δθ is included The initial phase shift value of all modulation symbols before the DFT of the data can be defaulted to zero.

In still another embodiment, the 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. And/or the position of the PTRS symbol in the sequence of the PTRS received signal and/or the PTRS sequence, for example, the phase shift value of the ith PTRS received signal may be -(Δθ+(i-1)*pi/2 ), or -(Δθ+i*pi/2), or -(Δθ+(i+1)*pi/2), or the phase shift value of the ith PTRS symbol in the PTRS sequence may be Δθ+(i- 1) *pi/2, or Δθ+i*pi/2, or Δθ+(i+1)*pi/2, where Δθ 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.

Next, another embodiment of the present invention will be described. 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 πpi/2 binary phase shift keying BPSK; The receiving end demodulates the data signal according to the pi/2 BPSK modulated PTRS. In one embodiment, 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. As an embodiment, 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. In still another embodiment, the receiving end may include a receiver and a processor for receiving OFDM symbols and demodulating data signals, respectively. In one embodiment, the transmitting device can be a chip or chip system.

The solution provided by the embodiment of the present application is mainly introduced from the perspective of interaction between the network elements. It can be understood that each network element, such as a transmitting end device or a receiving end device. In order to implement the above functions, it includes hardware structures and/or software modules corresponding to the execution of the respective functions. Those skilled in the art will readily appreciate that 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. For example, each functional module may be divided according to each function, or two or more functions may be integrated into one processing module. in. 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.

In an uplink single carrier transmission scenario, 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. In Figure 15, the terminal uses a mobile phone as an example. As shown in FIG. 15, 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.

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. When data is sent to the terminal, 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. For ease of illustration, only one memory and processor are shown in FIG. In an actual end product, there may be one or more processors and one or more memories. 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.

In the 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. As shown in FIG. 15, 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. Optionally, 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.

For example, in one implementation, 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. As another example, in one implementation, 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.

In an uplink single carrier transmission scenario, 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. For details, please refer to the description of the relevant part 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. Alternatively, the device for implementing the receiving function in the 1601 portion may be regarded as a receiving unit, and 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., and 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.

For example, in one implementation, 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. As another example, in one implementation, 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.

In a downlink single carrier transmission scenario, the transmitting device may be a base station. A simplified schematic diagram of the base station structure is shown in FIG. For related explanations, please refer to the above. For example, in one implementation, 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. As another example, in one implementation, 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.

In a downlink single carrier transmission scenario, the receiving device may be a terminal. A simplified schematic diagram of the terminal structure is shown in FIG. For related explanations, please refer to the above. For example, in one implementation, 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. For example, in one implementation, 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.

For the explanation and beneficial effects of the related content in any of the above-mentioned communication devices, reference may be made to the corresponding method embodiments provided above, and details are not described herein again.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using 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. 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.

Although the present application has been described herein in connection with the various embodiments, those skilled in the art can Other variations of the disclosed embodiments are achieved. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill several of the functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that the measures are not combined to produce a good effect.

While the present invention has been described in connection with the specific embodiments and embodiments thereof, various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the description and drawings are to be regarded as It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims (61)

An information transmission method, comprising: Generating an orthogonal frequency division multiplexing OFDM symbol, the OFDM symbol comprising a πpi/2 binary phase shift keyed BPSK modulated data signal, and a pi/2 BPSK modulated phase reference signal PTRS; Transmitting the OFDM symbol. The method of claim 1 further comprising: Phase shifting the BPSK modulated PTRS to obtain the pi/2 BPSK modulated PTRS; The PTRS includes one or more PTRS blocks, each PTRS block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are incremented by pi/2 and phase-shifted after pi is modeled. . The method according to claim 2, wherein the BPSK symbol in each PTRS block is incremented by pi/2 and phase-shifted after modulo modulo, including: Phase shifting each BPSK symbol in the sequence by mod(pi/2*k, pi) according to the order of the BPSK symbols in the sequence, where k is the position of the BPSK symbol in the sequence; The sequence is a sequence obtained by inserting a BPSK-modulated PTRS into a BPSK-modulated data signal; or the sequence is a PTRS sequence obtained by BPSK modulation. The method according to claim 2, wherein the BPSK symbol in each PTRS block is incremented by pi/2 and phase-shifted after modulo modulo, including: According to the order of the BPSK symbols in the sequence, in the order of increasing pi/2, and after modulating pi, phase shifting each BPSK symbol in the sequence, wherein the sequence is BPSK modulated a sequence obtained by inserting a BPSK modulated data signal into the PTRS; Alternatively, according to the order of the BPSK symbols in the BPSK-modulated PTRS, the BPSK symbols in the BPSK-modulated PTRS are phase-shifted after modulo pi. The method of claim 1 further comprising: Phase shifting the BPSK modulated PTRS to obtain the pi/2 BPSK modulated PTRS; The PTRS includes one or more PTRS blocks, and each PTRS block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are phase-shifted according to a pi/2 decreasing rule. The method according to claim 5, wherein the BPSK symbols in each PTRS block are phase-shifted according to a pi/2 decreasing rule, including: Phase shifting each BPSK symbol in the sequence according to the order of the BPSK symbols in the sequence, wherein the sequence is BPSK-modulated PTRS inserted into BPSK modulated data. The sequence obtained by the signal; Or, according to the order of the BPSK symbols in the BPSK-modulated PTRS, the BPSK symbols in the BPSK-modulated PTRS are phase-shifted by a pi/2 decreasing rule. The method according to any one of claims 2 to 6, wherein the method further comprises: Inserting the BPSK modulated PTRS into the BPSK modulated data signal before performing phase shift on the BPSK modulated PTRS; Alternatively, after phase shifting the BPSK-modulated PTRS, the pi/2 BPSK-modulated PTRS is inserted into the pi/2 BPSK-modulated data signal. The method according to any one of claims 1 to 7, wherein the method further comprises: According to the modulation and coding scheme MCS, it is determined that the modulation mode of the data signal is pi/2 BPSK. The method according to claim 8, wherein the modulation mode of the data signal is determined to be pi/2 BPSK according to the MCS, including: When the MCS is greater than or equal to 0 and less than or equal to a preset value, it is determined that the modulation mode of the data signal is pi/2 BPSK. The method according to any one of claims 1 to 9, wherein the OFDM symbol is a discrete Fourier transform single carrier DFT-s-OFDM symbol. An information transmission method, comprising: Receiving orthogonal frequency division multiplexing OFDM symbols, the OFDM symbols comprising a πpi/2 binary phase shift keyed BPSK modulated data signal, and a pi/2 BPSK modulated phase reference signal PTRS; The pi/2 BPSK modulated data signal is demodulated according to the pi/2 BPSK modulated PTRS. The method according to claim 11, wherein the pi/2 BPSK modulated data signal is demodulated according to the pi/2 BPSK modulated PTRS, including: Phase shifting the pi/2 BPSK modulated PTRS; wherein the PTRS includes one or more PTRS blocks, each PTRS block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are followed. The phase shift is performed by the law of increasing pi/2; The pi/2 BPSK modulated data signal is demodulated based on the phase shifted PTRS. The method according to claim 12, wherein phase shifting the BPSK symbols in each PTRS block according to a pi/2 increment rule comprises: Performing phase shift on each BPSK symbol in the OFDM symbol according to an order of increasing the pi/2 in accordance with an arrangement order of each BPSK symbol in the OFDM symbol; Or, according to the order of the BPSK symbols in the pi/2 BPSK modulated PTRS, the BPSK symbols in the pi/2 BPSK modulated PTRS are phase-shifted by a pi/2 increment rule. The method according to claim 11, wherein the pi/2 BPSK modulated data signal is demodulated according to the pi/2 BPSK modulated PTRS, including: Phase shifting the pi/2 BPSK modulated PTRS; wherein the PTRS includes one or more PTRS blocks, each PTRS block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are followed. The phase shift of the pi/2 decreasing law; The pi/2 BPSK modulated data signal is demodulated based on the phase shifted PTRS. The method according to claim 14, wherein the BPSK symbols in each PTRS block are phase-shifted according to a pi/2 decreasing rule, including: Performing phase shift on each BPSK symbol in the OFDM symbol according to a sequence of pi/2 decreasing according to an arrangement order of each BPSK symbol in the OFDM symbol; Or, according to the order of arrangement of the BPSK symbols in the pi/2 BPSK modulated PTRS, the BPSK symbols in the pi/2 BPSK modulated PTRS are phase-shifted by a pi/2 decreasing rule. The method according to any one of claims 11 to 15, wherein the method further comprises: According to the modulation and coding scheme MCS, it is determined that the modulation mode of the data signal is pi/2 BPSK. The method according to claim 16, wherein the modulation mode of the data signal is determined to be pi/2 BPSK according to the MCS, including: When the MCS is greater than or equal to 0 and less than or equal to a preset value, it is determined that the modulation mode of the data signal is pi/2 BPSK; wherein the preset value is 4, 6, or 8. The method according to any one of claims 11 to 17, wherein the OFDM symbol is a discrete Fourier transform single carrier DFT-s-OFDM symbol. An information transmission device, comprising: a processing unit, configured to generate orthogonal frequency division multiplexing OFDM symbols, the OFDM symbol includes a πpi/2 binary phase shift keyed BPSK modulated data signal, and a pi/2 BPSK modulated phase reference signal PTRS; And a sending unit, configured to send the OFDM symbol. The apparatus according to claim 19, wherein the processing unit is further configured to: phase shift the BPSK modulated PTRS to obtain the pi/2 BPSK modulated PTRS; wherein the PTRS includes a Or a plurality of PTRS blocks, each PTRS block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are incremented by pi/2 and phase-shifted after modulating pi. The device according to claim 20, wherein the processing unit is specifically configured to: Phase shifting each BPSK symbol in the sequence by mod(pi/2*k, pi) according to the order of the BPSK symbols in the sequence, where k is the position of the BPSK symbol in the sequence; The sequence is a sequence obtained by inserting a BPSK-modulated PTRS into a BPSK-modulated data signal; or the sequence is a PTRS sequence obtained by BPSK modulation. The device according to claim 20, wherein the processing unit is specifically configured to: According to the order of the BPSK symbols in the sequence, in the order of increasing pi/2, and after modulating pi, phase shifting each BPSK symbol in the sequence, wherein the sequence is BPSK modulated a sequence obtained by inserting a BPSK modulated data signal into the PTRS; Alternatively, according to the order of the BPSK symbols in the BPSK-modulated PTRS, the BPSK symbols in the BPSK-modulated PTRS are phase-shifted after modulo pi. The apparatus according to claim 19, wherein the processing unit is further configured to: phase shift the BPSK modulated PTRS to obtain the pi/2 BPSK modulated PTRS; wherein the PTRS includes a Or a plurality of PTRS blocks, each PTRS block including one or more BPSK symbols, and phase shifting the BPSK symbols in each PTRS block according to a pi/2 decreasing rule. The device according to claim 23, wherein the processing unit is specifically configured to: Phase shifting each BPSK symbol in the sequence according to the order of the BPSK symbols in the sequence, wherein the sequence is BPSK-modulated PTRS inserted into BPSK modulated data. The sequence obtained by the signal; Or, according to the order of the BPSK symbols in the BPSK-modulated PTRS, the BPSK symbols in the BPSK-modulated PTRS are phase-shifted by a pi/2 decreasing rule. The device according to any one of claims 20 to 24, wherein the processing unit is further configured to: Inserting the BPSK modulated PTRS into the BPSK modulated data signal before performing phase shift on the BPSK modulated PTRS; Alternatively, after phase shifting the BPSK-modulated PTRS, the pi/2 BPSK-modulated PTRS is inserted into the pi/2 BPSK-modulated data signal. The apparatus according to any one of claims 19 to 25, wherein the processing unit is further configured to determine that a modulation mode of the data signal is pi/2 BPSK according to a modulation and coding scheme MCS. The apparatus according to claim 26, wherein the processing unit is specifically configured to: when the MCS is greater than or equal to 0 and less than or equal to a preset value, determine that a modulation mode of the data signal is pi/2 BPSK; The preset value is 4, 6, or 8. The apparatus according to any one of claims 19 to 27, wherein the OFDM symbol is a discrete Fourier transform single carrier DFT-s-OFDM symbol. An information transmission device, comprising: a receiving unit, configured to receive an Orthogonal Frequency Division Multiplexing (OFDM) symbol, the OFDM symbol comprising a πpi/2 binary phase shift keyed BPSK modulated data signal, and a pi/2 BPSK modulated phase reference signal PTRS; And a processing unit, configured to demodulate the pi/2 BPSK modulated data signal according to the pi/2 BPSK modulated PTRS. The apparatus according to claim 29, wherein the processing unit is specifically configured to: perform phase shift on the pi/2 BPSK modulated PTRS; and demodulate the pi/2 according to the phase shifted PTRS a BPSK modulated data signal; wherein the PTRS includes one or more PTRS blocks, each PTRS block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are subjected to a pi/2 increment rule. shift. The device according to claim 30, wherein the processing unit is specifically configured to: Performing phase shift on each BPSK symbol in the OFDM symbol according to an order of increasing the pi/2 in accordance with an arrangement order of each BPSK symbol in the OFDM symbol; Or, according to the order of the BPSK symbols in the pi/2 BPSK modulated PTRS, the BPSK symbols in the pi/2 BPSK modulated PTRS are phase-shifted by a pi/2 increment rule. The apparatus according to claim 29, wherein the processing unit is specifically configured to: perform phase shift on the pi/2 BPSK modulated PTRS; and demodulate the pi/2 according to the phase shifted PTRS a BPSK-modulated data signal; wherein the PTRS includes one or more PTRS blocks, each PTRS block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are subjected to a pi/2 decreasing law shift. The device according to claim 32, wherein the processing unit is specifically configured to: Performing phase shift on each BPSK symbol in the OFDM symbol according to a sequence of pi/2 decreasing according to an arrangement order of each BPSK symbol in the OFDM symbol; Or, according to the order of arrangement of the BPSK symbols in the pi/2 BPSK modulated PTRS, the BPSK symbols in the pi/2 BPSK modulated PTRS are phase-shifted by a pi/2 decreasing rule. The apparatus according to any one of claims 29 to 33, wherein the processing unit is further configured to determine, according to the modulation and coding scheme MCS, that the modulation mode of the data signal is pi/2 BPSK. The apparatus according to any one of claims 29 to 34, wherein the OFDM symbol is a discrete Fourier transform single carrier DFT-s-OFDM symbol. An information transmission method, comprising: Generating an orthogonal frequency division multiplexing OFDM symbol, the OFDM symbol comprising a phase reference signal PTRS after two-way πpi/2 binary phase shift keying BPSK modulation; Transmitting the OFDM symbol. The method of claim 36, wherein the method further comprises: Phase shifting the BPSK modulated PTRS to obtain the pi/2 BPSK modulated PTRS; The PTRS includes one or more PTRS blocks, and each PTRS block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are phase-shifted according to a pi/2 increment rule. The method according to claim 37, wherein the BPSK symbols in each PTRS block are phase-shifted according to a pi/2 increment rule, including: Phase shifting the PTRS according to the location of the PTRS symbol within the OFDM symbol; Alternatively, the PTRS is phase shifted according to the position of the PTRS symbol in the PTRS sequence. The method according to any one of claims 36 to 38, wherein power lifting is performed on the PTRS symbol, and the power lifting of the PTRS symbol comprises: A boost power value is determined based on a modulation mode of the data signal in the OFDM symbol. The method of claim 39, wherein the method further comprises: A modulation mode of the data signal is determined according to a modulation coding scheme MCS. The method according to any one of claims 36 to 40, wherein the OFDM symbol is a discrete Fourier transform single carrier DFT-s-OFDM symbol. An information transmission method, comprising: Receiving orthogonal frequency division multiplexing OFDM symbols, the OFDM symbols comprising a two-phase πpi/2 binary phase shift keying BPSK modulated phase reference signal PTRS; The data signal is demodulated based on the pi/2 BPSK modulated PTRS. The method of claim 42, wherein the method further comprises: Phase shifting the BPSK-modulated PTRS sequence to obtain the pi/2 BPSK-modulated PTRS sequence; The PTRS sequence includes one or more PTRS blocks, and each PTRS block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are phase-shifted according to a pi/2 increment rule. The method according to claim 43, wherein the BPSK symbols in each PTRS block are phase-shifted according to a pi/2 increment rule, including: Phase shifting the PTRS according to the location of the PTRS symbol within the OFDM symbol; Alternatively, the PTRS is phase shifted according to the position of the PTRS symbol in the PTRS sequence. The method of claim 42, wherein the method further comprises: Performing phase shift on the pi/2 BPSK modulated PTRS received signal to obtain the BPSK modulated PTRS received signal; The PTRS received signal includes one or more PTRS blocks, and each PTRS block includes one or more pi/2 BPSK symbols, and the pi/2 BPSK symbols in each PTRS block are incremented by pi/2. Phase shift. The method according to claim 45, wherein phase shifting the pi/2 BPSK symbols in each PTRS block according to a pi/2 increment rule comprises: Phase shifting the PTRS according to the location of the PTRS symbol within the OFDM symbol; Alternatively, the PTRS is phase shifted according to the position of the PTRS symbol in the PTRS received signal. The method according to any one of claims 42 to 46, wherein the OFDM symbol is a discrete Fourier transform single carrier DFT-s-OFDM symbol. An information transmission device, comprising: a processing unit, configured to generate orthogonal frequency division multiplexing OFDM symbols, where the OFDM symbol includes a phase reference signal PTRS after two-phase πpi/2 binary phase shift keying BPSK modulation; And a sending unit, configured to send the OFDM symbol. The device according to claim 48, wherein the processing unit is specifically configured to: Phase shifting the BPSK modulated PTRS to obtain the pi/2 BPSK modulated PTRS; The PTRS includes one or more PTRS blocks, and each PTRS block includes one or more BPSK symbols, and the BPSK symbols in each PTRS block are phase-shifted according to a pi/2 increment rule. The apparatus according to claim 49, wherein the processing unit is configured to perform phase shifting on the BPSK symbols in each PTRS block according to a pi/2 increment rule, including: The processing unit performs phase shift on the PTRS according to a position of the PTRS symbol in the OFDM symbol; Alternatively, the processing unit phase shifts the PTRS according to the position of the PTRS symbol in the PTRS sequence. The device according to any one of claims 48 to 50, wherein the processing unit is configured to perform power lifting on the PTRS symbol, and the processing unit is configured to perform power lifting on the PTRS symbol, including: The processing unit determines a boost power value based on a modulation mode of the data signal in the OFDM symbol. The apparatus according to claim 51, wherein said processing unit is further configured to determine a modulation mode of said data signal based on a modulation and coding scheme MCS. The apparatus according to any one of claims 48 to 52, wherein the OFDM symbol is a discrete Fourier transform single carrier DFT-s-OFDM symbol. An information transmission device, comprising: a receiving unit, configured to receive an Orthogonal Frequency Division Multiplexing (OFDM) symbol, the OFDM symbol comprising a phase reference signal PTRS after 1/2pi/2 binary phase shift keying BPSK modulation; And a processing unit, configured to demodulate the data signal according to the pi/2 BPSK modulated PTRS. The apparatus according to claim 54, wherein the processing unit is further configured to phase shift the BPSK modulated PTRS to obtain the pi/2 BPSK modulated PTRS; The PTRS includes one or more PTRS blocks, each PTRS block includes one or more BPSK symbols, and the processing unit is further configured to perform phase-by-pi/2 increments on BPSK symbols in each PTRS block. shift. The apparatus according to claim 55, wherein the processing unit is further configured to perform phase shifting on the BPSK symbols in each PTRS block according to a pi/2 increment rule, including: The processing unit is further configured to perform phase shift on the PTRS according to a position of the PTRS symbol in the OFDM symbol; Alternatively, the processing unit is further configured to phase shift the PTRS according to a position of the PTRS symbol in the PTRS sequence. The apparatus according to claim 54, wherein the processing unit is further configured to phase-shift a pi/2 BPSK-modulated PTRS received signal to obtain a received signal of the BPSK-modulated PTRS; The PTRS received signal includes one or more PTRS blocks, each PTRS block includes one or more pi/2 BPSK symbols, and the processing unit is further configured to follow the pi/2 BPSK symbols in each PTRS block. The phase shift is performed by the law of increasing pi/2. The apparatus according to claim 57, wherein the processing unit is further configured to perform phase shifting on the pi/2 BPSK symbol in each PTRS block according to a pi/2 increment rule, including: The processing unit is further configured to perform phase shift on the PTRS according to a position of the PTRS symbol in the OFDM symbol; Alternatively, the processing unit is further configured to phase shift the PTRS according to a position of the PTRS symbol in the PTRS received signal. The apparatus according to any one of claims 54 to 58, wherein the OFDM symbol is a discrete Fourier transform single carrier DFT-s-OFDM symbol. A computer readable storage medium having stored thereon a computer program, wherein the program is executed by a processor such that the method of any one of claims 1 to 18 or 36 to 47 is performed. A computer program product, when run on a computer, causes the computer to perform the method of any one of claims 1 to 18 or 36 to 47.

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