Communication method and communication apparatus

Abstract

Disclosed in the embodiments of the present application are a communication method and a communication apparatus, relating to the technical field of communications and used for reducing the PAPR of signals. The specific solution is: after obtaining an SSB signal comprising at least one of a PSS, an SSS, a PBCH, and a DMRS, a signal-sending end can send the SSB signal by means of real-imaginary separation of a modulated signal; that is, a real part and an imaginary part of the SSB signal are separated. The embodiments of the present application are used during signal transmission from the signal-sending end to a signal-receiving end.

Description

Communication method and communication device Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and a communication device. Background Art

[0002] In communication systems, signal transmission requires amplification. For example, this can be achieved through a power amplifier. However, due to technical and cost constraints, a power amplifier can only linearly amplify signals within a certain range. Exceeding this range results in signal distortion.

[0003] For example, a signal composed of multiple subcarriers generates a large peak, requiring the power amplifier to have a large linear dynamic range, which increases the amplifier's cost and reduces its efficiency. If the peak exceeds the linear dynamic range of the power amplifier, it will cause in-band distortion and out-of-band dispersion. Therefore, reducing the signal's peak-to-average power ratio (PAPR) is a key technology in communication systems and is of great significance.

[0004] Summary of the Invention

[0005] The present application provides a communication method and a communication device for reducing the PAPR of a signal.

[0006] To achieve the above objectives, this application adopts the following technical solutions:

[0007] In a first aspect, a communication method is provided, comprising: after a signal transmitting end obtains a synchronization signal block (SSB) signal including at least one of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a physical broadcast channel block (PBCH), and a demodulation reference signal (DMRS), the SSB signal can be transmitted using a real-virtual separation method of the modulation signal. That is, the real part and the imaginary part of the SSB signal are separated.

[0008] Based on the communication method provided in the first aspect, after acquiring the SSB signal, the signal transmitter can use the real-virtual separation method of the modulated signal to send the SSB signal. Because the real-virtual separation method of the modulated signal can reduce the PAPR of the signal, the communication method based on this application can reduce the PAPR of the SSB signal and improve transmission efficiency.

[0009] In one possible implementation, the signal transmitter uses an offset quadrature amplitude modulation (OQAM) waveform to transmit the SSB signal. Since the OQAM waveform separates the real and virtual parts of the signal, it can reduce the PAPR of the SSB signal and improve the signal transmission efficiency.

[0010] In one possible implementation, the signal transmitter uses an OQAM waveform and an orthogonal frequency division multiplexing (OFDM) waveform to transmit the SSB signal. Because the OQAM waveform uses real and virtual separation, it can reduce the PAPR of the SSB signal to a certain extent, thereby improving the transmission efficiency of the SSB signal.

[0011] In one example, when the SSB signal includes DMRS and other signals, the signal transmitter uses an OFDM waveform to send the DMRS in the SSB signal, and uses an OQAM waveform and an OFDM waveform to send other signals in the SSB signal except DMRS.

[0012] In another example, when the SSB signal includes SSS and other signals, the signal transmitter uses an OFDM waveform to send the SSS in the SSB signal, and uses an OQAM waveform to send other signals except SSS in the SSB signal.

[0013] In one possible implementation, the signal transmitter uses an OQAM waveform and a DFT-s-OFDM waveform to transmit an SSB signal. Because both the OQAM waveform and the discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) waveform have low PAPRs, the PAPR of the SSB signal can be reduced, thereby improving the transmission efficiency of the SSB signal.

[0014] In one example, when the SSB signal includes a PSS signal and other signals, the signal transmitter uses a DFT-s-OFDM waveform to send the PSS and uses an OQAM waveform to send other signals in the SSB signal.

[0015] In another possible implementation, the signal transmitter can use an OQAM waveform, a DFT-s-OFDM waveform, or an OFDM waveform to transmit an SSB signal. Since both the OQAM waveform and the DFT-s-OFDM waveform have low PAPRs, the PAPR of the SSB signal can be reduced, thereby improving the transmission efficiency of the SSB signal.

[0016] In one example, when the SSB signal includes DMRS, PSS and other signals, the signal transmitter can use a DFT-s-OFDM waveform to send PSS, use an OFDM waveform to send DMRS, and use an OQAM waveform to send other signals in the SSB signal except PSS and DMRS.

[0017] In another possible implementation, the SSB signal may include multiple OFDM symbols, for example, 2 OFDM symbols, 3 OFDM symbols, 4 OFDM symbols, etc.

[0018] In one example, when an SSB signal includes two OFDM symbols, one OFDM symbol may include one or more signals. For example, one OFDM symbol may include one signal, and another OFDM symbol may include two signals.

[0019] In another example, when the SSB signal includes three OFDM symbols, one OFDM symbol may include one or more signals. For example, two OFDM symbols may include one signal, and another OFDM symbol may include two or three signals.

[0020] In a second aspect, a communication device is provided. The communication device is applied to a signal transmitting end or a chip or system-on-chip in the signal transmitting end. The communication device can also be a functional module in the signal transmitting end for implementing the method described in the first aspect or any possible design of the first aspect. The communication device can implement the functions performed by the signal transmitting end in the above aspects or possible designs. The functions can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the communication device includes a processor and a communication interface.

[0021] The processor is used to send the SSB signal through a communication interface by using a real and virtual separation method of the modulated signal.

[0022] The specific implementation of the communication device can refer to the behavior function of the signal transmitting end in the communication method provided in the first aspect or any possible design of the first aspect, and will not be repeated here. Therefore, the provided communication device can achieve the same beneficial effects as the first aspect or any possible design of the first aspect.

[0023] In a third aspect, a communication device is provided. The communication device may be a signal transmitting end or a chip or system-on-chip within the signal transmitting end. The communication device may implement the functions performed by the signal transmitting end in the aforementioned aspects or possible designs. The functions may be implemented through hardware. For example, in one possible design, the communication device may include a processor and a communication interface. The processor may be configured to support the communication device in implementing the functions involved in the aforementioned first aspect or any possible design of the first aspect, for example, the processor may be configured to transmit an SSB signal via the communication interface.

[0024] In another possible design, the communication device may further include a memory for storing computer-executable instructions and data necessary for the communication device. When the communication device is running, the processor executes the computer-executable instructions stored in the memory to cause the communication device to perform the method described in the first aspect or any possible design of the first aspect.

[0025] In a fourth aspect, a computer-readable storage medium is provided, which may be a readable non-volatile storage medium. The computer-readable storage medium stores computer instructions or programs, which, when run on a computer, enables the computer to execute the method described in the first aspect or any possible design of the above aspects.

[0026] In a fifth aspect, a communication device is provided. The communication device may be a host device or a chip or system-on-chip in the host device. The communication device includes one or more processors and one or more memories. The one or more memories are coupled to the one or more processors and are configured to store computer program code. The computer program code includes computer instructions. When the one or more processors execute the computer instructions, the host device executes the method according to the first aspect or any possible embodiment of the first aspect.

[0027] In a sixth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the method described in the first aspect or any possible design of the above aspects.

[0028] In a seventh aspect, a chip system is provided, comprising a processor and a communication interface. The chip system can be used to implement the functions performed by the signal transmitting end in the first aspect or any possible design of the first aspect, for example, the processor is used to transmit an SSB signal via the communication interface. In one possible design, the chip system further comprises a memory for storing program instructions and / or data. The chip system can be composed of a chip alone or can include a chip and other discrete components, without limitation.

[0029] Among them, the technical effects brought about by any design method from the second to the seventh aspects can refer to the technical effects brought about by the above-mentioned first aspect or any possible design of the first aspect, and will not be repeated here.

[0030] In an eighth aspect, a communication method is provided, comprising: a signal receiving end receiving an SSB signal, the SSB signal including at least one of a PSS, an SSS, a PBCH, and a DMRS, the SSB signal being transmitted using a real-virtual separation method for a modulated signal; and the signal receiving end parsing the SSB signal using the real-virtual separation method for the modulated signal to obtain a signal within the SSB signal.

[0031] In one possible implementation, the SSB signal is sent using an OQAM waveform.

[0032] In one possible implementation, the SSB signal is transmitted using an OQAM waveform and an orthogonal frequency division multiplexing (OFDM) waveform.

[0033] In one example, when the SSB signal includes DMRS and other signals, the DMRS in the SSB signal is sent using an OFDM waveform, and other signals in the SSB signal except DMRS are sent using an OQAM waveform and an OFDM waveform.

[0034] In another example, when the SSB signal includes SSS and other signals, the SSS in the SSB signal is sent using an OFDM waveform, and the other signals in the SSB signal except the SSS are sent using an OQAM waveform.

[0035] In one possible implementation, the SSB signal is transmitted using an OQAM waveform and a DFT-s-OFDM waveform.

[0036] In one example, when an SSB signal includes a PSS signal and other signals, the PSS is sent using a DFT-s-OFDM waveform, and other signals in the SSB signal are sent using an OQAM waveform.

[0037] In another possible implementation, the SSB signal is sent using an OQAM waveform, a DFT-s-OFDM waveform, and an OFDM waveform.

[0038] In one example, when the SSB signal includes DMRS, PSS and other signals, the PSS can be sent using a DFT-s-OFDM waveform, the DMRS can be sent using an OFDM waveform, and other signals in the SSB signal except PSS and DMRS can be sent using an OQAM waveform.

[0039] In a ninth aspect, a communication device is provided. The communication device is applied to a signal receiving end or a chip or system-on-chip in the signal receiving end. The communication device can also be a functional module in the signal receiving end for implementing the method described in the second aspect or any possible design of the second aspect. The communication device can implement the functions performed by the signal receiving end in the above aspects or possible designs. The functions can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the communication device includes a processor and a communication interface.

[0040] The processor is used to receive an SSB signal through a communication interface.

[0041] The specific implementation of the communication device can refer to the behavior function of the signal receiving end in the communication method provided in the eighth aspect or any possible design of the eighth aspect, and will not be repeated here. Therefore, the provided communication device can achieve the same beneficial effects as the eighth aspect or any possible design of the eighth aspect.

[0042] In a tenth aspect, a communication device is provided, which may be a signal receiving end or a chip or system-on-chip in the signal receiving end. The communication device may implement the functions performed by the signal receiving end in the above-mentioned aspects or possible designs. The functions may be implemented through hardware. For example, in one possible design, the communication device may include a processor and a communication interface. The processor may be used to support the communication device in implementing the functions involved in the above-mentioned eighth aspect or any possible design of the eighth aspect, for example, the processor is used to receive an SSB signal from a signal transmitting end through the communication interface.

[0043] In another possible design, the communication device may further include a memory for storing computer-executable instructions and data necessary for the communication device. When the communication device is running, the processor executes the computer-executable instructions stored in the memory to cause the communication device to perform the method described in the eighth aspect or any possible design of the eighth aspect.

[0044] In the eleventh aspect, a computer-readable storage medium is provided, which may be a readable non-volatile storage medium. The computer-readable storage medium stores computer instructions or programs, which, when run on a computer, enables the computer to execute the method described in the eighth aspect or any possible design of the above aspects.

[0045] In a twelfth aspect, a communication device is provided. The communication device may be a host device or a chip or system-on-chip in the host device. The communication device includes one or more processors and one or more memories. The one or more memories are coupled to the one or more processors and are configured to store computer program code. The computer program code includes computer instructions. When the one or more processors execute the computer instructions, the host device executes the method according to the eighth aspect or any possible embodiment of the eighth aspect.

[0046] In a thirteenth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the method described in the eighth aspect or any possible design of the above aspects.

[0047] In a fourteenth aspect, a chip system is provided, comprising a processor and a communication interface. The chip system can be used to implement the functions performed by the signal receiving end in the eighth aspect or any possible design of the eighth aspect, for example, the processor is used to transmit an SSB signal via the communication interface. In one possible design, the chip system further comprises a memory for storing program instructions and / or data. The chip system can be composed of a chip alone, or it can include a chip and other discrete components, without limitation.

[0048] Among them, the technical effects brought about by any design method in the ninth to fourteenth aspects can refer to the technical effects brought about by the above-mentioned first aspect or any possible design of the first aspect, and will not be repeated here.

[0049] In the fifteenth aspect, the present application provides a communication system, including a signal transmitting end and a signal receiving end, the signal transmitting end is used to execute the communication method described in the first aspect and any possible implementation of the first aspect, and the signal receiving end is used to execute the communication method described in the eighth aspect and any possible implementation of the eighth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] FIG1 is a schematic diagram of a peak-to-average ratio of a signal provided in an embodiment of the present application;

[0051] FIG2 is a schematic diagram of multi-carrier superposition provided in an embodiment of the present application;

[0052] FIG3 is a schematic diagram of a system block diagram of DFT-s-OFDM provided in an embodiment of the present application;

[0053] FIG4 is a schematic diagram of a BPSK modulation method provided in an embodiment of the present application;

[0054] FIG5 is a schematic diagram of a QPSK modulation method provided in an embodiment of the present application;

[0055] FIG6 is a schematic diagram of a 16-QAM modulation method provided in an embodiment of the present application;

[0056] FIG7 is a schematic diagram of a standard sine wave provided in an embodiment of the present application;

[0057] FIG8 is a schematic diagram of multiple sine waves provided in an embodiment of the present application;

[0058] FIG9 is a schematic diagram of a single-carrier implementation method provided in an embodiment of the present application;

[0059] FIG10 is a schematic diagram of another single-carrier implementation method provided in an embodiment of the present application;

[0060] FIG11 is a SC-QAM waveform diagram provided in an embodiment of the present application;

[0061] FIG12 is a waveform diagram of an SC-OQAM provided in an embodiment of the present application;

[0062] FIG13 is a schematic diagram of another single-carrier implementation method provided in an embodiment of the present application;

[0063] FIG14 is a schematic diagram of frequency domain shaping provided by an embodiment of the present application;

[0064] FIG15 is a schematic diagram of an SSB signal provided in an embodiment of the present application;

[0065] FIG16 is a schematic diagram of a communication system provided in an embodiment of the present application;

[0066] FIG17 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0067] FIG18 is a schematic diagram of a signal transmission process according to an embodiment of the present application;

[0068] FIG19 is a flow chart of a communication method provided in an embodiment of the present application;

[0069] FIG20 is a schematic diagram of the structure of an SSB signal provided in an embodiment of the present application;

[0070] FIG21 is a schematic diagram of the structure of another SSB signal provided in an embodiment of the present application;

[0071] FIG22 is a spectrum diagram provided in an embodiment of the present application;

[0072] FIG23 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0073] FIG24 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

[0074] Figure 25 is a structural diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0075] Before introducing the embodiments of the present application, the relevant technical terms involved in the embodiments of the present application are explained. It should be noted that these explanations are intended to make the embodiments of the present application easier to understand and should not be regarded as limiting the scope of protection claimed by the embodiments of the present application.

[0076] PAPR, also known as peak-to-average power ratio (PAPR), is the ratio of a signal's peak power to the system's total average power. In the time domain, a signal is a sinusoidal wave with a constantly changing amplitude, and the amplitude is not constant. The peak amplitude of the signal varies in different cycles, and therefore the average power of the signal varies in each cycle. Over a long period of time, peak power is the maximum transient power that occurs with a certain probability (e.g., 0.01%). PAPR is the ratio of the peak power at that probability to the system's total average power. For example, Figure 1 shows a schematic diagram of the peak-to-average power ratio.

[0077] In the case of communications, factors affecting the peak-to-average ratio of the system may include the following factors 1 and 2.

[0078] Factor 1: Peak-to-average ratio of the baseband signal.

[0079] The peak-to-average ratio (PAR) of baseband signals varies with modulation schemes. For example, the PAR of a baseband signal modulated by 1024-quadrature amplitude modulation (QAM) is relatively large, while the PAR of baseband signals modulated by quadrature phase shift keying (QPSK) and binary phase shift keying (BPSK) is 1. QPSK and BPSK modulation can be understood as maintaining a constant signal amplitude with only the phase changing.

[0080] Factor 2: Peak-to-average power ratio caused by the superposition of multiple carrier powers.

[0081] The multi-carrier power superposition may refer to the superposition of multi-carrier signals. For example, FIG2 shows a schematic diagram of the superposition of multi-carrier signals in an OFDM system.

[0082] As shown in Figure 2, in an OFDM system, the waveform of a carrier can be represented as a sinc function, with tails on the left and right sides of the carrier. The tails of multiple carriers may overlap with a certain probability, forming a point with high peak power. This results in an excessively high PAPR (Power Response Rate). Excessively high PAPR can cause signal distortion.

[0083] Specifically, when a device in a communication system sends a signal to another device, it must first amplify the signal. However, due to technical and cost limitations, power amplifiers can only amplify linearly within a certain range. If the signal power exceeds this range, signal distortion occurs. For example, when the audio frequency of a microphone is within a normal range, the amplified sound is relatively smooth. However, when the audio frequency is high, such as from a loud shout, the sound coming through the microphone becomes harsh and unpleasant. Therefore, when the received signal is distorted, the receiver cannot correctly interpret the signal. Therefore, to ensure that the signal peak value is within the linear range of the power amplifier, the average power of the signal needs to be reduced. However, reducing the average power of the signal may reduce the efficiency of the power amplifier and shorten the signal coverage range.

[0084] Furthermore, high frequencies (i.e., millimeter wave bands, primarily including 28G, 39G, 60G, and 73G) can be used to address growing communications needs due to their abundant frequency resources. To achieve high throughput, high frequencies feature large bandwidth and highly integrated wireless arrays. However, this comes with serious mid-range and RF distortion issues, such as significant path loss, phase noise (PHN), and carrier frequency offset (CFO). Furthermore, high frequencies also experience greater Doppler shift. These multiple issues can introduce phase errors, leading to performance degradation or even malfunction of high-frequency communication systems.

[0085] To reduce signal PAPR, a single-carrier transmission method can be used. For example, discrete Fourier transform spreading OFDM (DFTs-OFDM) can be used to transmit signals. For example, a synchronization signal block (SS block) signal can be transmitted.

[0086] DFTs-OFDM is a variant of CP-OFDM signals. It refers to Fourier transforming a certain number of modulation symbols, transforming them into the frequency domain, filtering the frequency domain signal or directly mapping it to the frequency domain subcarrier without filtering, and then performing an inverse Fourier transform on it. The frequency domain signal is converted into a time domain signal, and a cyclic prefix is ​​added to obtain the transmitted signal.

[0087] Among them, CP-OFDM represents a cyclic prefix OFDM signal. The waveform of this signal is obtained by mapping the modulated modulation symbols to the frequency domain subcarriers, then performing an inverse Fourier transform on them, converting the frequency domain signal into a time domain signal, and adding a cyclic prefix to obtain the transmitted signal.

[0088] DFTs-OFDM, also known as linear precoded OFDM, performs additional discrete Fourier transform (DFT) processing before traditional OFDM. DFTs-OFDM is a signal generation method for uplink and downlink links in the Long Term Evolution (LTE) technology.

[0089] DFTs-OFDM is equivalent to performing a DFT-map-IFFT operation on OFDM. That is, before performing the DFT on OFDM, the input signal is convolved with a Sinc waveform. Physically, DFTs-OFDM is still a single-carrier operation. Compared to OFDM, DFTs-OFDM offers a lower PAPR, which can improve the power transmission efficiency of terminal devices, extend battery life, and reduce terminal device costs.

[0090] DFT-s-OFDM, based on frequency domain spectrum shaping (FDSS), performs an additional spectrum replication after the DFT, then multiplies this replicated signal with a filter, achieving a frequency domain reselection effect. Spectral shaping effectively transforms the time-domain waveform from the DFT-s-OFDM sinc waveform to one with a more limited time length and lower sideband envelope. This reduces the PARP of DFTs-OFDM and is an alternative waveform technology for future mobile communications (such as sixth-generation (6G)+) and high-frequency scenarios.

[0091] In one example, Figure 3 shows a system block diagram for implementing DFT-s-OFDM. In Figure 3, M and N are both positive integers, and N is less than M. S-to-P stands for serial to parallel, and P-to-S stands for parallel to serial.

[0092] As shown in Figure 3, the steps performed by the signal transmitter include S-to-P, N-point DFT, subcarrier mapping, M-point IDFT, P-to-S, adding a cyclic prefix (CP) / prefix symbol (PS), and processing by a D / A converter (DAC) / radio frequency (RF). The signal transmitter can send the signal to the signal receiver through a channel. The steps performed by the signal receiver can include RF / DAC processing, CP removal, M-point DFT, subcarrier demodulation / equalization, N-point inverse discrete Fourier transform (IDFT), P-to-S, and detection.

[0093] In communication systems, information is typically represented by bits (0s and 1s). However, radio signals are typically analog signals with frequency, amplitude, and phase. Therefore, information bits can be carried on radio signals through modulation.

[0094] Taking BPSK modulation as an example, as shown in a of Figure 4, the phase of information bit 1 is 0, and the phase of information bit 0 is π. The signal is on the real axis.

[0095] For example, as shown in b in Figure 4, the input information bit is 10111, and the sine wave corresponding to the information bit is transmitted. It can be understood that the starting phase of the sine wave corresponding to the position of information bit 0 is π.

[0096] The amplitude of BPSK modulation is 1 (after normalization). If the amplitude can be changed, a richer modulation constellation diagram can be obtained, such as QPSK, 16-QAM, 64QAM, 256QAM, etc.

[0097] In one example, as shown in Figure 5, in QPSK modulation, one point (also called a symbol) can correspond to two information bits, and each symbol can correspond to an amplitude and a phase. The amplitude of QPSK is constant, and the phase difference between each point is π / 2.

[0098] In another example, as shown in FIG6 , in 16-QAM modulation, one point (which may be called a symbol) may correspond to four information bits (2 4=16). Each symbol can have an amplitude and a phase. 16-QAM can have multiple amplitudes, and the phase between each point is also different.

[0099] In another example, in 1024-QAM, one symbol may correspond to 10 information bits (2 10＝ 1024).

[0100] The Fourier transform is one of the most important tools for signal processing in communication systems. It bridges the gap between the time and frequency domains. Typically, signals are time-domain signals. For example, everyday sounds are essentially time-domain signals. For example, as shown in Figure 7, a standard sine wave (f = 400 MHz) is a time-domain signal, which can be understood as a signal whose amplitude varies over time.

[0101] The signal's position within a cycle can be understood as its phase, typically expressed as an angle. Alternatively, as shown in Figure 7, the signal is mapped to an angle φ on the unit circle. The period T of a sinusoidal signal is fixed, and since f = 1 / T, the frequency of the sinusoidal signal is also constant. It can be understood that a sinusoidal signal is a pulse on the frequency axis (that is, a straight line, with the length of the line representing the amplitude). For example, this is shown in Figure 8.

[0102] In fourth-generation (4G) LTE and 5G New Radio (NR) systems, the radio signal transmitted over the air interface (free space) can be simply understood as the superposition of multiple sinusoidal signals. In the frequency domain, the signal can be expressed as multiple pulses of varying amplitudes, while in the time domain, it resembles a nearly square wave.

[0103] The Fourier transform can quickly transform a time-domain signal into the frequency domain, or vice versa. Signals appear simpler in the frequency domain. Due to the Fourier transform's characteristics, signals can be processed in the frequency domain, reducing signal processing complexity.

[0104] An SSB may include at least one of a channel state information reference signal (CSI-RS), a reference signal, and system information. An SS block may correspond to one or more OFDM symbols. An SS block may include at least one of the following: PSS, SSS, PBCH, and DMRS.

[0105] The SSB can also be referred to as the SS / PBCH block. Multiple signals within an SS block or SS / PBCH block can be transmitted using the same antenna port. The SSB can be used for time-frequency synchronization between terminal devices and network equipment, as well as for detecting cell physical identifiers (IDs). The PSS can be used for time-frequency synchronization of terminal devices and for detecting cells. The SSS can be used to transmit the cell physical identifier ID. The PSS and SSS can also be combined to achieve the aforementioned functions.

[0106] The PBCH can be used to transmit system information. The SS / PBCH block can also include SS and PBCH, which are used for terminal devices and network equipment to achieve time synchronization, detect cell physical identifiers (IDs), and obtain system information.

[0107] In one example, as shown in FIG9 , a single carrier (SC-QAM) implementation method is shown. In FIG9 , the signal transmitter first modulates the data information (i.e., the encoded 0 and 1 information) into a modulated signal. The modulated signal can be a QAM modulated signal, a phase modulated signal, or other signals, without limitation. After obtaining the modulated signal, the modulated information can be up-sampled (up-sampling) to repeat the symbols of the modulated signal. In the embodiment of the present application, upsampling can refer to the prior art and will not be described in detail. After upsampling the modulated signal, pulse shaping can be performed, that is, filtering the modulated signal using a filter to shape the modulated signal, reduce the PAPR of the signal, and perform or remove interference on the transmission bandwidth of the signal. Afterwards, the modulated signal is down-sampled (down-sampling), that is, the modulated signal is extracted, and the extracted signal is sent to the RF module and sent to the terminal device through the antenna.

[0108] In another example, Figure 10 illustrates another single-carrier (SC-OQAM) implementation. Compared to the technical solution in Figure 9, Figure 10 separates the real and imaginary components of the modulated signal and applies a T / 2 delay to one of the signals. The remaining processing is consistent with that in Figure 9 and will not be further described.

[0109] In an embodiment of the present application, SC-QAM carries a complex signal (QAM signal, etc.), and the filter can be an RRC filter. For example, Figure 11 shows an SC-QAM waveform diagram. As can be seen from Figure 11, the waveform of SC-QAM is complex orthogonal, and one SC-QAM waveform carries a complex signal. The SC-QAM waveform shown in Figure 11 is in a positive relationship with the next SC-QAM waveform carrying a signal. That is, the amplitude of the SC-QAM waveform at the sampling point of the next SC-QAM waveform carrying a signal is 0.

[0110] For another example, Figure 12 shows an SC-OQAM waveform. The SC-OQAM waveform includes a real part and an imaginary part, and the real and imaginary parts are partially orthogonal. Partial orthogonality means partial interference.

[0111] As shown in Figure 12, an S-OQAM waveform carries a signal with separate real and imaginary parts, and the relationship between this SC-OQAM waveform and the next SC-OQAM waveform is non-orthogonal (that is, the SC-OQAM waveform is not 0 at the sampling point of the next SC-OQAM waveform carrying the signal). However, since the information carried by the SC-OQAM waveform carrying the next signal is positive angle, the interference is orthogonal to the signal. This waveform is orthogonal to the waveforms of the next two signals. Therefore, this SC-OQAM waveform is orthogonal to the next two signals.

[0112] Based on the partial orthogonality of the SC-OQAM waveform, the receiver can discard the imaginary signal when it needs the real signal, and discard the real signal when it needs the imaginary signal. This ensures accurate information transmission. Because the peaks of the real waveform overlap the non-peaks of the imaginary signal, this staggered peak approach effectively reduces PAPR.

[0113] The frequency domain implementation of SC-OQAM is described below.

[0114] In one example, as shown in FIG13 , compared with the technical solution of FIG10 , the technical solution of FIG13 has the following two improvements.

[0115] In the first aspect, the QAM constellation points used in the DFT-S-OFDM-OQAM system are split into real and imaginary signals (it is also possible to directly define that the input is a PAM signal instead of a QAM signal). A double upsampling is performed, that is, the real signal becomes [X, 0, X, 0, X, 0, ...], and the imaginary signal becomes [jY, 0, jY, 0, jY, 0, ...]. The imaginary signal is then delayed and becomes [0, jY, 0, jY, 0, jY, ...]. After the imaginary signal and the real signal are combined, it becomes [X, jY, X, jY, X, jY, ...]. In the embodiment of the present application, the imaginary signal can also be realized by other means, but the final signal form is [X, jY, X, jY, X, jY, ...], that is, a signal with separated real and imaginary parts. However, the total length of the signal becomes twice that of the original complex modulated signal. Subsequently, the symbols after phase rotation / real and imaginary part separation are subjected to a 2N-point DFT transform. N is a positive integer.

[0116] Secondly, the DFT signal after 2N points is frequency-domain shaped. The specific method is as follows:

[0117] In the first aspect described above, QAM constellation modulation with real and imaginary separation is used. The signal length is twice that of traditional QAM constellation modulation, and the number of DFT points is also twice that of traditional QAM constellation modulation. Therefore, the data after the DFT is actually redundant, so truncated frequency-domain filtering can be performed on the redundant signal.

[0118] For example, as shown in Figure 14, truncation refers to making the filter bandwidth smaller than the bandwidth after the DFT. For example, if the bandwidth after the DFT is 100 resource blocks, the frequency domain filter can be designed to be 60 resource blocks long. The filtering process involves directly multiplying the frequency domain filter with the DFT signal. The filter length can be 2N, with some values ​​set to zero. Because the signal is redundant, truncation filtering does not cause performance loss. Finally, after performing an M-point IFFT transform with zero padding, a CP is added and the signal is transmitted.

[0119] Based on the above description, it can be seen that the essence of SC-OQAM is to separate the real and imaginary parts and then pass them through a shaping filter. This implementation method has a lower PAPR than the traditional complex implementation method. This is because the overlapping method of the signals after the real and imaginary parts are separated is staggered. In this application, regardless of the generation method in the time domain or frequency domain, it can be regarded as having a common input signal: [X, jY, X, jY, X, jY, ...], or [jY, X, jY, X, jY, X, ...] real and imaginary separated signals. It can be understood that in this application, the position where the real signal X is sent is the real signal position, and the position where the imaginary signal jY is sent is the imaginary signal position.

[0120] After introducing the implementation of SC-OQAM, the implementation of NR-based SSB signals is described below.

[0121] Among them, the SSB signal of NR is implemented based on the waveform of OFDM. In NR, the SSB signal can include four OFDM symbols. The four symbols can carry the PSS, PBCH, SSS, and PBCH in the SSB signal. For example, the distribution of the SSB signal on the four OFDM symbols can be shown in Figure 15. The frequency domain resource size of the signal on each OFDM symbol is 20 physical resource blocks (PRBs) and 288 resource elements (REs). The specific positions of each signal can be shown in Table 1.

[0122] Table 1

[0123] The data in Table 1 are only exemplary, and the position of the signal on each OFDM symbol may also include other positions without limitation.

[0124] In existing protocols, the time domain position of an SSB signal is fixed within a half-frame, and its time domain position includes five patterns, namely pattern A to pattern E.

[0125] Among them, pattern A is mainly aimed at the subcarrier spacing of 15 kilohertz (KHz), pattern B and pattern C are mainly aimed at the subcarrier spacing of 30 KHz, pattern D is mainly aimed at 120 KHz, and pattern E is mainly aimed at 240 KHz.

[0126] In the embodiment of the present application, the time domain position of each pattern within a half-frame is fixed. For example, the time domain position of pattern A is {2, 8} + 14*n. When the carrier frequency or operating frequency band is less than 3 GHz, the value of n can be 0 or 1; when the carrier frequency or operating frequency band is greater than 3 GHz and less than 6 GHz, the value of n can be 0, 1, 2, or 3.

[0127] For another example, the time domain position of pattern B is {4, 8, 16, 20}+28*n. When the carrier frequency or operating frequency band is less than 3 GHz, the value of n can be 0; when the carrier frequency or operating frequency band is greater than 3 GHz and less than 6 GHz, the value of n is 0 or 1.

[0128] For another example, the time domain position of pattern C is {2, 8}+14*n. When the carrier frequency or operating frequency band is less than 3 GHz, the value of n can be 0 or 1; when the carrier frequency or operating frequency band is greater than 3 GHz and less than 6 GHz, the value of n can be 0, 1, 2, or 3.

[0129] For another example, the time domain position of pattern D is {4, 8, 16, 20}+28*n. When the carrier frequency or operating frequency band is greater than 6 GHz, the value of n can be 0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, or 18.

[0130] For another example, the time domain positions of pattern E are {8, 12, 16, 20, 32, 36, 40, 44}+56*n, where the value of n can be 0, 1, 2, 3, 5, 6, 7, or 8.

[0131] In this embodiment of the present application, the symbols occupied by the SSB signal may be distributed such that the first symbol is the PSS, the second symbol is the PBCH, the third symbol is the PBCH and SSS, and the fourth symbol is the PBCH. The symbol where the PBCH is located includes the DMRS for the PBCH. The SSB signal period can be configured in five ways: 5 milliseconds (ms), 10ms, 20ms, 40ms, 80ms, or 160ms.

[0132] Of course, the symbol distribution included in the SSB signal can also include other methods. For example, PSS, SSS and PBCH can each occupy an OFDM symbol. For another example, PSS and SSS can each occupy an OFDM symbol separately. For another example, PSS and SSS can share an OFDM symbol. For another example, PSS and PBCH can share an OFDM symbol. Different signals use different waveforms. For example, the signals in the SSB signal all use a DFT-s-OFDM waveform. For another example, the SSS in the SSB signal uses a DFT-s-OFDM waveform, or the PBCH uses a DFT-s-OFDM waveform, or the DMRS and PSS use an OFDM waveform, and the PBCH and SSS use a DFT-s-OFDM waveform.

[0133] As can be seen above, SSB is based on OFDM or DFT-s-OFDM, not OQAM. However, compared to OFDM and DFT-s-OFDM, OQAM offers better performance. Therefore, to improve the transmission efficiency of SSB signals, the transmitting end can use real and virtual modulation separation (or OQAM) to transmit SSB signals.

[0134] The implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0135] As shown in Figure 16, the communication system provided in the embodiment of the present application may be a third generation partnership project (3GPP) communication system, such as an LTE mobile communication system, a 5G mobile communication system, a NR system, a NR vehicle-to-everything (V2X) system, and other next-generation communication systems, or a non-3GPP communication system, without limitation. The communication method provided in the embodiment of the present application is described below using Figure 11 as an example.

[0136] Figure 16(a) shows a simplified schematic diagram of a communication system provided by an embodiment of the present application. As shown in Figure 16(a), the communication system may include: a network device and multiple terminal devices. The multiple terminal devices are all communicatively connected to the network device. Figure 16(b) shows a simplified schematic diagram of another communication system provided by an embodiment of the present application. As shown in Figure 16(b), the communication system may include multiple network devices and a terminal device. The terminal device may be communicatively connected to each network device. For example, the terminal device may be located in an overlapping area of ​​signal coverage of the multiple network devices.

[0137] The network device in FIG16 is a device deployed in a radio access network to provide wireless communication functions for terminal devices. That is, the network device can be used to communicate with the terminal device, and for example, can include an evolved base station (NodeB, eNB, or e-NodeB, evolutionary Node B) in an LTE system or an enhanced LTE (LTE-advanced, LTE-A) system, such as a traditional macro base station eNB and a micro base station eNB in ​​a heterogeneous network scenario. Alternatively, it can include a next-generation node B (gNB) in an NR system. Alternatively, it can include a transmission reception point (TRP), a home base station (e.g., a home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), a baseband pool (BBU pool), or a wireless fidelity (WiFi) access point (AP). Alternatively, it may include a base station in a non-terrestrial network (NTN), which can be deployed on an aircraft or satellite. In an NTN, the network device can function as a Layer 1 (L1) relay, a base station, or an integrated access and backhaul (IAB) node. Alternatively, the network device can be a device that implements base station functions in the IoT, such as drone communications, V2X, D2D, or machine-to-machine (M2M) communications.

[0138] In some possible scenarios, the network device may also be a module or unit that can implement some of the functions of the base station. For example, the network device may be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU may be configured separately or included in the same network element, such as a baseband unit (BBU). The RU may be included in a radio frequency device or radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0139] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, the network device may be a network device or a module of a network device in an open radio access network (open RAN, ORAN) system. In the ORAN system, CU may also be referred to as open (open, O)-CU, DU may also be referred to as O-DU, CU-CP may also be referred to as O-CU-CP, CU-UP may also be referred to as O-CU-UP, and RU may also be referred to as O-RU. Any of the CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0140] Optionally, the base station in the embodiment of the present application may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, home base stations, TRPs, transmitting points (TPs), mobile switching centers, etc., and the embodiments of the present application do not make specific limitations on this.

[0141] In the embodiments of the present application, the network equipment can also manage, control and schedule wireless resources through certain strategies and means, and make full use of limited wireless network resources as much as possible while meeting the service quality requirements, ensuring that the planned coverage area is reached, and improving service capacity and resource utilization as much as possible.

[0142] In the embodiments of the present application, the form of the network device is not limited. The device used to implement the function of the network device can be a network device; it can also be a device that can support the network device to implement the function, such as a chip system. The device can be installed in the network device or used in conjunction with the network device.

[0143] The terminal device involved in the embodiments of the present application can be a user equipment (UE), an access terminal, a terminal unit, a user station, a terminal station, a mobile station, a mobile station, a mobile station, a remote station, a remote terminal, a user terminal terminal equipment, a mobile device, a wireless communication device, a terminal agent, a tablet computer (pad), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a vehicle-mounted transceiver unit, a wearable device, or a terminal device. The access terminal can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a drone, a robot, an intelligent point of sale (POS) machine, a customer-premises equipment (CPE) or a wearable device, a virtual reality (VR) device. The terminal device may be a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, or a wireless terminal in smart home. Alternatively, the terminal device may be a terminal with communication capabilities in the Internet of Things (IoT), such as a terminal in V2X (e.g., a vehicle-to-everything (V2X) device), a terminal in D2D communication, or a terminal in M2M communication. The terminal device may be mobile or fixed.

[0144] The embodiments of this application do not limit the form of the terminal device. The device used to implement the functions of the terminal device can be the terminal device; it can also be a device that supports the terminal device to implement the functions, such as a chip system. The device can be installed in the terminal device or used in conjunction with the terminal device. In the embodiments of this application, the chip system can be composed of a chip or include a chip and other discrete devices.

[0145] It should be noted that Figure 16 is an exemplary figure, and the number of devices shown in Figure 16 and the naming of the interfaces between the devices in Figure 16 are not limited. In addition to the network elements shown in Figure 16, the communication system shown in Figure 16 may also include other devices, such as core network devices, without limitation.

[0146] In specific implementation, the devices in Figure 16 can all adopt the composition structure shown in Figure 17, or include the components shown in Figure 17. Figure 17 is a schematic diagram of the composition of a communication device 1700 provided in an embodiment of the present application. The communication device 1700 can be a master device or a chip or system on chip in the master device. Alternatively, the communication device 1700 can be a slave device or a chip or system on chip in the slave device. As shown in Figure 17, the communication device 1700 includes a processor 1701, a communication interface 1702, and a communication line 1703.

[0147] Furthermore, the communication device 1700 may further include a memory 1704 . The processor 1701 , the memory 1704 and the communication interface 1702 may be connected via a communication line 1703 .

[0148] The processor 1701 is a central processing unit (CPU), a general-purpose processor, a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The processor 1701 may also be other devices with processing functions, such as circuits, devices, or software modules, without limitation.

[0149] Communication interface 1702 is used to communicate with other devices or other communication networks. Such other communication networks may be Ethernet, radio access networks (RAN), wireless local area networks (WLAN), etc. Communication interface 1202 may be a module, circuit, communication interface, or any other device capable of implementing communication.

[0150] The communication line 1703 is used to transmit information between the components included in the communication device 1200.

[0151] The memory 1704 is used to store instructions, where the instructions may be computer programs.

[0152] Among them, the memory 1704 can be a read-only memory (ROM) or other types of static storage devices that can store static information and / or instructions, or a random access memory (RAM) or other types of dynamic storage devices that can store information and / or instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, etc., without limitation.

[0153] It should be noted that the memory 1704 can exist independently of the processor 1701 or can be integrated with the processor 1701. The memory 1704 can be used to store instructions, program code, or some data. The memory 1704 can be located within the communication device 1700 or outside the communication device 1700, without limitation. The processor 1701 is configured to execute the instructions stored in the memory 1704 to implement the data transmission method for short-range wireless communication provided in the following embodiments of the present application.

[0154] In one example, the processor 1701 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 17 .

[0155] As an optional implementation, the communication device 1700 includes multiple processors. For example, in addition to the processor 1701 in FIG. 17 , it may also include a processor 1707 .

[0156] As an optional implementation, the communication apparatus 1700 further includes an output device 1705 and an input device 1706. For example, the input device 1706 is a keyboard, a mouse, a microphone, or a joystick, and the output device 1705 is a display screen, a speaker, or the like.

[0157] It should be noted that communication device 1700 can be a desktop computer, a portable computer, a network server, a mobile phone, a tablet computer, a wireless terminal, an embedded device, a chip system, or a device having a structure similar to that shown in FIG17 . Furthermore, the structure shown in FIG17 does not limit the master device and the slave device. In addition to the components shown in FIG17 , the master device and the slave device may include more or fewer components than shown, or combine certain components, or arrange the components differently.

[0158] In the embodiment of the present application, the chip system can be composed of chips, or can include chips and other discrete devices.

[0159] In addition, the actions and terms involved in the various embodiments of this application can refer to each other without limitation. The names of the information exchanged between the various devices or the names of the parameters in the information are only examples, and other names can also be used in specific implementations without limitation.

[0160] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0161] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "plurality" means two or more.

[0162] In some embodiments, the present application provides a signal transmission process, and the execution device of the signal transmission process can be the network device in FIG16 or the terminal device in FIG16 .

[0163] Figure 18 (a) shows a schematic diagram of a signal transmission process using an OQAM waveform. The signal transmission process may include sequence generation, real / virtual separation, DFT transformation, filtering, mapping, IFFT, and transmission.

[0164] Among them, real-imaginary separation can mean separating the real and imaginary parts of the modulated signal. DFT transformation can mean transforming the time-domain modulation symbols into the frequency-domain DFT. Filtering means filtering the signal. Filtering can be an optional step. Mapping can mean mapping the signal onto multiple carriers. IFFT can mean performing a frequency-domain Fourier transform on the signal, converting the time-domain signal into a frequency-domain signal, and adding a cyclic prefix (i.e., a +CP operation). Transmitting can mean sending the baseband signal via radio frequency.

[0165] Figure 18(b) shows a schematic diagram of multiple signals transmitted using an OQAM waveform within a single OFDM symbol. Compared to Figure 18(a), modulation is added. Modulation can refer to the modulation of data bits onto the symbols to be modulated. The remaining steps in Figure 18(b) are similar to those described above and are not repeated here.

[0166] As shown in c in Figure 18, it is a schematic diagram of signal transmission. For details, please refer to the description of a and b in Figure 18, which will not be repeated here.

[0167] In an embodiment of the present application, when transmitting an extremely large signal, the signal transmitter may use a beamforming method. The beam may be a wide beam, a narrow beam, or other types of beams. The beamforming technology may be beamforming technology or other technical means.

[0168] Beamforming technologies include digital beamforming, analog beamforming, and hybrid digital / analog beamforming. Different beams can be considered different resources. Different beams can transmit the same or different information.

[0169] In one example, multiple beams with the same or similar communication characteristics can be considered as one beam. A beam can include one or more antenna ports for transmitting data channels, control channels, and sounding signals.

[0170] For example, a transmit beam can refer to the distribution of signal strength in different spatial directions after a signal is transmitted by an antenna, while a receive beam can refer to the distribution of signal strength in different spatial directions of a wireless signal received by an antenna. It is understood that the one or more antenna ports that form a beam can also be considered an antenna port set. Beams can also be implemented in communication protocols as spatial filters.

[0171] The communication method provided in the embodiments of the present application is described below in conjunction with the communication system shown in Figure 16. The signal transmitting end and signal receiving end described in the following embodiments may include the components shown in Figure 17, which are not described in detail here. The signal transmitting end may be the network device shown in Figure 16, and the signal receiving end may be the terminal device shown in Figure 16. Alternatively, the signal transmitting end may be the terminal device shown in Figure 16, and the signal receiving end may be the network device shown in Figure 16.

[0172] FIG19 is a flow chart of a communication method provided in an embodiment of the present application. As shown in FIG19 , the method may include:

[0173] Step 1901: The signal transmitter obtains the SSB signal.

[0174] The SSB signal may include at least one of PBDH, DMRS, PSS, and SSS. PBDH, DMRS, PSS, and SSS are described below.

[0175] 1. PBCH can carry some relevant information of the cell, such as cell access information or cell time information, or access bandwidth information.

[0176] 2. DMRS can carry partial information of the SSB signal, such as time information or SSB time index information. In the embodiment of the present application, DMRS can be generated using a pseudo-random sequence, for example, using any of an m-sequence, a gold sequence, or a ZC sequence. Of course, DMRS can also be used for channel estimation. M is a positive integer.

[0177] 3. The PSS may carry some information about the network device, for example, it may carry the identity information of the cell. In the embodiment of the present application, the PSS may also be generated using a pseudo-random sequence, for example, using any one of an m-sequence, a gold sequence, or a ZC sequence.

[0178] 4. The SSS may carry the identification information or other information of the cell. In the embodiment of the present application, the SSS may also be generated using a pseudo-random sequence, for example, using any one of an m-sequence, a gold sequence, or a ZC sequence.

[0179] In an embodiment of the present application, an SSB signal may include multiple OFDM symbols. For example, it may include 2 OFDM symbols, or 3 OFDM symbols, or 4 OFDM symbols. Among them, one OFDM symbol may carry one or more signals in the SSB signal. The signals carried on different OFDM symbols may be the same or different. For details, please refer to the description of the following embodiment, which will not be repeated here.

[0180] Step 1902: The signal transmitting end transmits an SSB signal by separating the real and virtual modulation signals. Correspondingly, the signal receiving end receives the SSB signal.

[0181] The real and imaginary separation of the modulated signal may refer to separating the real and imaginary parts of the signal.

[0182] Combined with the relevant description of real-virtual separation in the above technical terms, the signal transmitter uses the real-virtual separation of the modulation signal to send the SSB signal, including: using an OQAM waveform to transmit the SSB signal, using an OQAM waveform and an OFDM waveform to send the SSB signal, using an OQAM waveform and a DFT-s-OFDM waveform to send the SSB signal, and using an OQAM waveform, a DFT-s-OFDM waveform, and an OFDM waveform to send the SSB signal. These four methods are exemplified below.

[0183] 1. Use OQAM waveform to transmit SSB signal.

[0184] Here, using an OQAM waveform to transmit an SSB signal may refer to using an OQAM waveform to transmit each signal in the SSB signal.

[0185] 2. Use OQAM waveform and OFDM waveform to send SSB signal.

[0186] Among them, using the OQAM waveform and the OFDM waveform to send the SSB signal may refer to using the OQAM waveform to send part of the SSB signal and using the OFDM waveform to send other signals in the SSB signal.

[0187] For example, the SSB signal includes DMRS and other signals (such as at least one of SSS, PSS, and PBCH). The signal transmitter can use an OFDM waveform to send DMRS and use an OQAM waveform to send other signals.

[0188] For another example, the SSB signal includes SSS and other signals (such as at least one of DMRS, PSS, and PBCH). The signal transmitter can use an OFDM waveform to send the SSS in the SSB signal, and use an OQAM waveform to send other signals in the SSB signal.

[0189] 3. Use OQAM waveform and DFT-s-OFDM waveform to send SSB signals.

[0190] Among them, using the OQAM waveform and the DFT-s-OFDM waveform to send the SSB signal may refer to using the OQAM waveform to send part of the SSB signal and using the DFT-s-OFDM waveform to send other signals in the SSB signal.

[0191] For example, the SSB signal includes PSS and other signals (such as at least one of DMRS, SSS, and PBCH). The signal transmitter can use a DFT-s-OFDM waveform to send the PSS in the SSB signal and use an OQAM waveform to send other signals in the SSB signal.

[0192] 4. Use OQAM waveform, DFT-s-OFDM waveform and OFDM waveform to send SSB signals.

[0193] Among them, using the OQAM waveform, the DFT-s-OFDM waveform and the OFDM waveform to send the SSB signal may refer to using the OQAM waveform, the DFT-s-OFDM waveform and the OFDM waveform to send part of the SSB signal.

[0194] For example, the SSB signal includes PSS, DMRS and other signals (such as SSS and / or PBCH). The signal transmitter can use an OQAM waveform to send the PSS in the SSB signal, use a DFT-s-OFDM waveform to send the DMRS in the SSB signal, and use an OFDM waveform to send other signals in the SSB signal.

[0195] It should be pointed out that the above four methods are only exemplary and do not limit the method of separating the real and virtual modulation signals in the embodiments of the present application.

[0196] Furthermore, in an embodiment of the present application, after receiving the SSB signal, the signal receiving end can parse the received SSB signal to obtain information carried by the SSB signal.

[0197] Based on the technical solution of Figure 19, after obtaining the SSB signal, the signal transmitter can use the real and virtual separation method of the modulated signal to send the SSB signal. Because the real and virtual separation method of the modulated signal can reduce the PAPR of the signal, the technical solution provided in the embodiment of the present application can reduce the PAPR of the SSB signal and improve transmission efficiency.

[0198] In some embodiments, in combination with the above-mentioned S1902, the signals in the SSB signal are all transmitted using an OQAM waveform. The SSB signal may include multiple OFDM symbols. For example, the SSB signal may include 2 OFDM symbols, or 3 OFDM symbols, or 4 OFDM symbols. Of course, a larger number of OFDM symbols may also be included. If the number of OFDM symbols included in the SSB signal is different, the signal carried by each OFDM symbol in the SSB signal is also different. Specifically, the following scenarios 1 to 3 may be included.

[0199] Scenario 1: The SSB signal includes 2 OFDM symbols.

[0200] An OFDM symbol may contain / carry one or more signals, specifically including the following 1-1 to 1-4.

[0201] 1-1. SSB signals include two types of signals, one of which occupies one OFDM symbol.

[0202] For example, an SSB signal includes the PSS and PBCH. The PSS and PBCH each occupy one OFDM symbol. For another example, an SSB signal includes the SSS and PBCH. The SS and PBCH each occupy one OFDM symbol.

[0203] 1-2. SSB signals include three types of signals: PSS, PBCH and DMRS.

[0204] In one example, one OFDM symbol contains two signals, while another contains one signal. For example, the first OFDM symbol in an SSB signal contains the PSS, while the second contains the PBCH and DMRS. Another example is the first OFDM symbol in an SSB signal contains the PSS and DMRS, while the second contains the PBCH.

[0205] In another example, each OFDM symbol includes two signals. For example, the first OFDM symbol in the SSB signal includes the PSS and DMRS, and the second OFDM symbol includes the PBCH and DMRS.

[0206] 1-3. SSB signals include three types of signals: PSS, PBCH and SSS.

[0207] In one example, one OFDM symbol contains two signals, and another OFDM symbol contains one signal. For example, the first OFDM symbol in an SSB signal contains the PSS, and the second OFDM symbol contains the PBCH and SSS. Another example is the first OFDM symbol in an SSB signal contains the PSS and SSS, and the second OFDM symbol contains the PBCH.

[0208] In another example, each OFDM symbol includes two signals. For example, in an SSB signal, the first OFDM symbol includes the PSS and the PBCH, and the second OFDM symbol includes the PBCH and the SSS.

[0209] 1-4. SSB signals include 4 types of signals, namely PSS, SSS, PBCH and DMRS.

[0210] In one example, one OFDM symbol contains three signals, and another OFDM symbol contains one signal. Alternatively, each OFDM symbol contains two signals. Alternatively, one OFDM symbol contains three signals, and another OFDM symbol contains two signals.

[0211] For example, the first OFDM symbol of an SSB signal contains PSS and SSS, and the second OFDM symbol contains PBCH and DMRS.

[0212] For another example, the first OFDM symbol of an SSB signal includes a PSS and a DMRS, and the second OFDM symbol includes a PBCH and an SSS.

[0213] For another example, the first OFDM symbol of the SSB signal includes PSS, DMRS and SSS, and the second OFDM symbol includes PBCH and DMRS.

[0214] Scenario 2: The SSB signal includes 3 OFDM symbols.

[0215] An OFDM symbol may contain / carry one or more signals, specifically including the following 2-1 to 2-3.

[0216] 2-1. The signals contained in the three OFDM symbols in the SSB signal are PSS, DMRS of PBCH and PBCH.

[0217] The number of signals on each OFDM symbol can be any one of [1, 1, 1], [1, 2, 1], [1, 1, 2], [1, 3, 2], [1, 2, 3], [2, 1, 1], [2, 2, 1], [1, 2, 2], [2, 1, 2], [2, 2, 2], [3, 2, 2], [2, 3, 2], [2, 2, 3].

[0218] For example, the first OFDM symbol contains the PSS, the second OFDM symbol contains the DMRS, and the third OFDM symbol contains the PBCH.

[0219] In the embodiment of the present application, the order of the signals on the three OFDM symbols is not fixed. For example, the first OFDM symbol contains DMRS, the second OFDM symbol contains PBCH, and the third OFDM symbol contains PSS.

[0220] Each OFDM symbol can carry multiple signals. For example, an OFDM symbol containing a DMRS can also contain a PBCH.

[0221] 2-2. The three OFDM symbols in the SSB signal contain the signals PSS, SSS and PBCH respectively.

[0222] The number of signals on each OFDM symbol can be any one of [1, 1, 1], [1, 2, 1], [1, 1, 2], [1, 3, 2], [1, 2, 3], [2, 1, 1], [2, 2, 1], [1, 2, 2], [2, 1, 2], [2, 2, 2], [3, 2, 2], [2, 3, 2], [2, 2, 3].

[0223] For example, the first OFDM symbol contains the PSS, the second OFDM symbol contains the SSS, and the third OFDM symbol contains the PBCH.

[0224] For another example, the first OFDM symbol contains the SSS, the second OFDM symbol contains the PSS, and the third OFDM symbol contains the PBCH.

[0225] For another example, the first OFDM symbol contains the PSS, the second OFDM symbol contains the PBCH, and the third OFDM symbol contains the SSS.

[0226] Each OFDM symbol may carry multiple signals. For example, an OFDM symbol including an SSS may also include a PBCH signal.

[0227] 2-3. The three OFDM symbols in the SSB signal contain the signals PSS, SSS, PBCH and DMRS respectively.

[0228] The number of signals on each symbol can be any one of [1, 2, 1], [1, 1, 2], [1, 3, 2], [1, 2, 3], [2, 1, 1], [2, 2, 1], [1, 2, 2], [2, 1, 2], [2, 2, 2], [3, 2, 2], [2, 3, 2], [2, 2, 3].

[0229] For example, among the three OFDM symbols of the SSB signal, one OFDM symbol may include the PSS, another OFDM symbol may include the SSS and the DMRS, and the remaining OFDM symbol may include the PBCH.

[0230] For another example, among the three OFDM symbols of the SSB signal, one OFDM symbol may include the PSS, another OFDM symbol may include the SSS, and the remaining OFDM symbol may include the PBCH and the DMRS.

[0231] For another example, among the three OFDM symbols of the SSB signal, one OFDM symbol may include the PSS and DMRS, another OFDM symbol may include the SSS, and the remaining OFDM symbol may include the PBCH.

[0232] For another example, in an SSB signal, the first OFDM symbol may include SSS and DMRS, the second OFDM symbol may include PSS, and the third OFDM symbol may include PBCH.

[0233] For another example, in an SSB signal, the first OFDM symbol may include a PSS, the second OFDM symbol may include a PBCH and a DMRS, and the third OFDM symbol may include an SSS.

[0234] For another example, in an SSB signal, the first OFDM symbol may include a PSS, the second OFDM symbol may include a PBCH, a DMRS, and an SSS, and the third OFDM symbol may include a PBCH and a DMRS.

[0235] For another example, in an SSB signal, the first OFDM symbol may include PSS and SSS, the second OFDM symbol may include PBCH and DMRS, and the third OFDM symbol may include PBCH and DMRS.

[0236] For another example, in an SSB signal, the first OFDM symbol may include PSS and DMRS, the second OFDM symbol may include PBCH, DMRS and SSS, and the third OFDM symbol may include PBCH and DMRS.

[0237] Scenario 3: The SSB signal includes 4 OFDM symbols.

[0238] In one example, the four OFDM symbols contain four signals, namely, PSS, DMRS of PBCH, and PBCH. The number of signals in each OFDM symbol can be any one of [1,1,1,1], [1,2,1,1], [2,1,1,1], [1,1,2,1], [1,1,1,2], [1,2,2,2], [2,1,2,2], [2,2,1,2], [2,2,2,1], [2,1,1,1], [2,2,2,2], [3,2,2,2], [2,3,2,2], [2,2,2,3], and [2,3,2,2].

[0239] For example, in an SSB signal, the first OFDM symbol contains the PSS, the second OFDM symbol contains the DMRS, the third OFDM symbol contains the PBCH, and the fourth OFDM symbol contains the PBCH.

[0240] For another example, in an SSB signal, the first OFDM symbol contains DMRS, the second OFDM symbol contains PBCH, the third OFDM symbol contains PSS, and the fourth OFDM symbol contains PBCH.

[0241] For another example, in an SSB signal, the first OFDM symbol includes PSS, the second OFDM symbol includes PBCH and DMRS, the third OFDM symbol includes PBCH and DMRS, and the fourth OFDM symbol includes PBCH and DMRS.

[0242] For another example, in an SSB signal, the first OFDM symbol includes PSS, PBCH, and DMRS, the second OFDM symbol includes PBCH and DMRS, the third OFDM symbol includes PBCH and DMRS, and the fourth OFDM symbol includes PBCH and DMRS.

[0243] For another example, in an SSB signal, the first OFDM symbol includes PSS and DMRS, the second OFDM symbol includes PBCH, the third OFDM symbol includes PBCH, and the fourth OFDM symbol includes PBCH.

[0244] In the embodiment of the present application, each OFDM symbol may carry multiple signals. For example, an OFDM symbol containing a DMRS may also contain a PBCH.

[0245] In another example, the three signals carried on the OFDM symbol of the SSB signal are PSS, SSS, and PBCH. The number of signals on each OFDM symbol can be any one of [1, 1, 1, 1], [1, 2, 1, 1], [2, 1, 1, 1], [1, 1, 2, 1], [1, 1, 1, 2], [1, 1, 2, 2], [1, 2, 2, 2], [2, 1, 2, 2], [2, 2, 1, 2], [2, 2, 2, 1], [2, 1, 1, 1], [2, 2, 2, 2], [3, 1, 1, 1], [1, 3, 1, 1], and [1, 1, 1, 3].

[0246] For example, in an SSB signal, the first OFDM symbol may include the PSS, the second OFDM symbol may include the SSS, the third OFDM symbol may include the PBCH, and the fourth OFDM symbol may include the PBCH.

[0247] For another example, in an SSB signal, the first OFDM symbol may include the SSS, the second OFDM symbol may include the PBCH, the third OFDM symbol may include the PSS, and the fourth OFDM symbol may include the PBCH.

[0248] For another example, in an SSB signal, the first OFDM symbol may include PSS and SSS, the second OFDM symbol may include PBCH, the third OFDM symbol may include PBCH, and the fourth OFDM symbol may include PBCH.

[0249] For another example, in an SSB signal, the first OFDM symbol may include PSS and SSS, the second OFDM symbol may include PBCH, the third OFDM symbol may include PBCH, and the fourth OFDM symbol may include PBCH.

[0250] In another example, the SSB signal includes four OFDM symbols carrying signals, namely PSS, SSS, PBCH and DMRS. The number of signals on each symbol can be any one of [1,1,1,1], [1,2,1,1], [2,1,1,1], [1,1,2,1], [1,1,1,2], [1,1,2,2], [1,2,2,2], [2,1,2,2], [2,2,1,2], [2,2,2,1], [2,1,1,1], [2,2,2,2], [3,2,2,2], [2,3,2,2], [2,2,2,3], [2,3,2,2], [3,3,2,2], [3,2,3,2], [3,2,2,3].

[0251] For example, in an SSB signal, one OFDM symbol may include a PSS, one OFDM symbol may include an SSS, one OFDM symbol may include a DMRS, and one OFDM symbol may include a PBCH.

[0252] For another example, in an SSB signal, one OFDM symbol may include PSS and SSS, one OFDM symbol may include DMRS, one OFDM symbol may include PBCH, and one OFDM symbol may include PBCH.

[0253] For another example, in an SSB signal, one OFDM symbol may include a PSS and a DMRS, one OFDM symbol may include an SSS, and one OFDM symbol may include a PBCH.

[0254] For another example, in an SSB signal, one OFDM symbol may include a PSS, one OFDM symbol may include an SSS and a DMRS, one OFDM symbol may include a PBCH, and one OFDM symbol may include a PBCH.

[0255] For another example, in an SSB signal, one OFDM symbol may include PSS or SSS, one OFDM symbol may include PBCH and DMRS, one OFDM symbol may include PBCH and DMRS, and one OFDM symbol may include PBCH and DMRS.

[0256] For another example, in an SSB signal, one ODFM symbol may include PSS or SSS, one ODFM symbol may include PBCH and DMRS, one ODFM symbol may include PBCH and DMRS, and one ODFM symbol may include PBCH and DMRS.

[0257] For another example, in an SSB signal, one ODFM symbol may include PSS / SSS, one ODFM symbol may include DMRS, one ODFM symbol may include PBCH, and one ODFM symbol may include PBCH.

[0258] For another example, in an SSB signal, one ODFM symbol may include a PSS, one ODFM symbol may include an SSS, one ODFM symbol may include a PBCH and a DMRS, and one ODFM symbol may include a PBCH and a DMRS.

[0259] For another example, in an SSB signal, one ODFM symbol may include a PSS, one ODFM symbol may include an SSS, a PBCH, and a DMRS, one ODFM symbol may include a PBCH and a DMRS, and one ODFM symbol may include a PBCH and a DMRS.

[0260] In one possible design, the first ODFM symbol in the SSB signal may include SSS and PBCH DMRS, the second ODFM symbol may include PSS, and the third ODFM symbol may include PBCH.

[0261] In another possible design, the first ODFM symbol in the SSB signal may include PSS, the second ODFM symbol may include PBCH and DMRS, and the third ODFM symbol may include SSS.

[0262] In another possible design, the first ODFM symbol in the SSB signal may include PSS, the second ODFM symbol may include PBCH, DMRS and SSS, and the third ODFM symbol may include PBCH and DMRS.

[0263] In another possible design, the first ODFM symbol in the SSB signal may include PSS and SSS, the second ODFM symbol may include PBCH and DMRS, and the third ODFM symbol may include PBCH and DMRS.

[0264] In another possible design, the first OFDM symbol in the SSB signal may include DMRS, the second OFDM symbol may include PBCH, DMRS and SSS, and the third OFDM symbol may include PBCH and DMRS.

[0265] It can be understood that the signals in the embodiments of the present application are all signals before real-virtual separation. When multiple OAQM SSB signals are included / exist in an OFDM symbol, redundant signals or zero signals can be inserted between the signals, and the inserted SSB signals can be subjected to real-virtual separation and other operations. As shown in Figure 20, a schematic diagram of an SSB signal provided in an embodiment of the present application is shown. In Figure 20, the SSB signal includes PSS, SSS, DMRS, and PBCH.

[0266] The redundant signal and the zero signal may be a guard interval (GI). For example, as shown in Figure 21, when an OFDM symbol includes the PSS and other signals (such as the SSS), a GI may be inserted between the PSS and the other signals. For another example, when the PSS and SSS are in the same OFDM symbol, a GI may be inserted between the PSS and the SSS.

[0267] Furthermore, in order to verify the effect of the technical solution of this embodiment, based on the technical solution of the embodiment of the present application, a spectrum diagram as shown in Figure 22 can be obtained. Figure 22 shows the power spectral density (PSD) of DFT-s-OFDM-PTRS-Opt and DFT-s-OFDM-phase-tracking reference signal (PTRS) in different frequency domains.

[0268] As shown in FIG22 , the energy of the spectrum edge of the optimized signal is less than that of the spectrum edge of the signal before optimization, thereby reducing the in-band interference of the signal and improving the transmission efficiency of the signal.

[0269] In another embodiment, in combination with the above S1902, signals in the SSB signal are transmitted using an OQAM waveform and other waveforms. For example, part of the SSB signal is transmitted using an OQAM waveform, and the rest of the signal is transmitted using an OFDM waveform.

[0270] In an embodiment of the present application, the SSB may include multiple OFDM symbols. For example, the SSB signal may include 2 OFDM symbols, or 3 OFDM symbols, or 4 OFDM symbols. Of course, a larger number of OFDM symbols may also be included. If the number of OFDM symbols included in the SSB signal is different, the signal carried by each OFDM symbol in the SSB signal is also different. Specifically, the following scenarios 4 to 6 may be included.

[0271] Scenario 4: The SSB signal includes 2 OFDM symbols.

[0272] The signal on one OFDM symbol can be transmitted using an OQAM waveform, while the signal on another OFDM symbol can be transmitted using a DFT-s-OFDM waveform or an OFDM waveform.

[0273] In one example, an SSB signal includes two signals, one of which occupies one OFDM symbol. For example, an SSB signal includes the PSS and PBCH, each of which occupies one OFDM symbol. In another example, an SSB signal includes the SSS and PBCH, each of which occupies one OFDM symbol.

[0274] In another example, the SSB signal includes three signals, one OFDM symbol includes two signals, and another OFDM symbol includes one signal.

[0275] For example, the three signals included in the SSB signal are PSS, PBCH and DMRS. The OFDM symbols occupied by these three signals may include the following situations 1 to 3.

[0276] Case 1: One symbol contains the PSS, and one symbol contains the PBCH and the DMRS of the PBCH.

[0277] Case 2: PSS and DMRS are included in one symbol, and PBCH is included in one symbol.

[0278] Case 3: PSS and PBCH are included in one symbol, and DMRS is included in one symbol.

[0279] In scenario 3, the symbols containing the DMRS can be transmitted using an OFDM waveform with low PAPR. Since the frequency domain signal power of the OFDM waveform is constant or uniform, it is beneficial for channel estimation.

[0280] For another example, the three signals included in the SSB signal are PSS, PBCH, and SSS, and the OFDM symbols occupied by these three signals may include the following situations 4 to 7.

[0281] Case 4: One OFDM symbol contains two signals, and another OFDM symbol contains one signal.

[0282] Case 5: The first symbol contains the PSS, and the second OFDM symbol contains the PBCH and SSS.

[0283] Case 6: The first symbol contains the PSS and SSS, and the second symbol contains the PBCH.

[0284] Case 7: One OFDM symbol contains two signals, and another OFDM symbol contains two signals.

[0285] For example, the first symbol includes PSS and PBCH, and the second symbol includes PBCH and SSS.

[0286] In another example, the SSB signal includes three signals, and each OFDM symbol includes two signals.

[0287] For example, the first OFDM symbol includes PSS and DMRS, and the second OFDM symbol includes PBCH and DMRS.

[0288] In another example, an SSB signal includes four signals: PSS, SSS, PBCH, and DMRS. One OFDM symbol of an SSB signal may include three signals, and another OFDM symbol may include one signal. Alternatively, each OFDM symbol of an SSB signal may include two signals. Alternatively, one OFDM symbol of an SSB signal may include three signals, and another OFDM symbol may include two signals.

[0289] For example, one OFDM symbol includes the PSS and SSS, and another OFDM symbol includes the PBCH and DMRS.

[0290] For another example, one OFDM symbol includes PSS and DMRS, and another OFDM symbol includes PBCH and SSS.

[0291] For another example, one OFDM symbol includes PSS, DMRS, and SSS, and another OFDM symbol includes PBCH and DMRS.

[0292] For another example, one OFDM symbol includes PSS, PBCH, and SSS, and another OFDM symbol includes DMRS.

[0293] The OFDM symbol where the DMRS is located can use an OFDM waveform with a low PAPR. The frequency domain signal power of the OFDM waveform is constant or has the same power, which is beneficial to channel estimation.

[0294] Scenario 5: The SSB signal includes 3 OFDM symbols.

[0295] In which case, when the SSB signal includes 3 OFDM symbols, the waveforms used to transmit the SSB signal can be two or three.

[0296] For example, the waveforms used by the three OFDM symbols of the SSB signal can be any one of [OQAM, DFT-s-OFDM, OFDM], [OQAM, OFDM, DFT-s-OFDM], [DFT-s-OFDM, OQAM, OFDM], [DFT-s-OFDM, OFDM, OQAM], [OFDM, OQAM, DFT-s-OFDM], [OFDM, DFT-s-OFDM, OQAM], [OQAM, OQAM, OFDM], [OQAM, OQAM, OQAM], [OQAM, OQAM, DFT-s-OFDM], [OQAM, DFT-s-OFDM, OQAM], [DFT-s-OFDM, OQAM, OQAM].

[0297] In one example, the signals contained in the three OFDM symbols of the SSB signal are PSS, DMRS and PBCH respectively, and the number of signals on each OFDM symbol can be any one of [1, 1, 1], [1, 2, 1], [1, 1, 2], [1, 3, 2], [1, 2, 3], [2, 1, 1], [2, 2, 1], [1, 2, 2], [2, 1, 2], [2, 2, 2], [3, 2, 2], [2, 3, 2], [2, 2, 3].

[0298] For example, the first OFDM symbol is PSS, the second OFDM symbol is DMRS, and the third OFDM symbol is PBCH.

[0299] In the embodiment of the present application, the order of the signals on the three OFDM symbols is not necessarily fixed. For example, the first OFDM symbol may carry DMRS, the second OFDM symbol may carry PBCH, and the third OFDM symbol may carry PSS. Each OFDM symbol can carry multiple signals. For example, an OFDM symbol containing DMRS may also contain PBCH.

[0300] In another example, the three OFDM symbols of the SSSB signal include the PSS, SSS, and PBCH, respectively. The number of signals in each OFDM symbol can be any one of [1, 1, 1], [1, 2, 1], [1, 1, 2], [1, 3, 2], [1, 2, 3], [2, 1, 1], [2, 2, 1], [1, 2, 2], [2, 1, 2], [2, 2, 2], [3, 2, 2], [2, 3, 2], and [2, 2, 3].

[0301] For example, the first OFDM symbol may be PSS, the second OFDM symbol may be SSS, and the third OFDM symbol may be PBCH.

[0302] For another example, the first OFDM symbol may be SSS, the second OFDM symbol may be PSS, and the third OFDM symbol may be PBCH.

[0303] For another example, the first OFDM symbol may be PSS, the second OFDM symbol may be PBCH, and the third OFDM symbol may be SSS.

[0304] Each OFDM symbol may carry multiple signals. For example, an OFDM symbol including an SSS may also include a PBCH.

[0305] In another example, the three OFDM symbols of the SSB signal may carry signals including PSS, SSS, PBCH, and DMRS, respectively. The number of signals on each OFDM symbol may be distributed in any of [1, 2, 1], [1, 1, 2], [1, 3, 2], [1, 2, 3], [2, 1, 1], [2, 2, 1], [1, 2, 2], [2, 1, 2], [2, 2, 2], [3, 2, 2], [2, 3, 2], and [2, 2, 3].

[0306] For example, a PSS may be placed on one OFDM symbol, an SSS and a DMRS may be placed on one OFDM symbol, and a PBCH may be placed on one OFDM symbol.

[0307] For another example, one OFDM symbol may contain PSS, one OFDM symbol may contain SSS, and one OFDM symbol may contain PBCH and DMRS.

[0308] For another example, one OFDM symbol may contain PSS and DMRS, one OFDM symbol may contain SSS, and one OFDM symbol may contain PBCH.

[0309] For another example, the first OFDM symbol may be SSS and DMRS, the second OFDM symbol may be PSS, and the third OFDM symbol may be PBCH.

[0310] For another example, the first OFDM symbol may be PSS, the second OFDM symbol may be PBCH and DMRS, and the third OFDM symbol may be SSS.

[0311] For another example, the first OFDM symbol may be PSS, the second OFDM symbol may be PBCH, DMRS and SSS, and the third OFDM symbol may be PBCH and DMRS.

[0312] For another example, the first OFDM symbol may carry PSS and SSS, the second OFDM symbol may carry PBCH and DMRS, and the third OFDM symbol may carry PBCH and DMRS.

[0313] For another example, the first OFDM symbol may carry PSS and DMRS, the second OFDM symbol may carry PBCH, DMRS and SSS, and the third OFDM symbol may carry PBCH and DMRS.

[0314] Scenario 6: The SSB signal includes 4 OFDM symbols.

[0315] Among them, the waveforms used to transmit the SSB signal can be two or three.

[0316] In one example, when two waveforms are used to transmit an SSB signal, one of the two waveforms may be an OQAM waveform, and the other waveform may be a DFT-s-OFDM waveform or an OFDM waveform.

[0317] In this case, the waveform distribution on the four OFDM symbols of the SSB signal is [OQAM, OQAM, DFT-s-OFDM, DFT-s-OFDM], [OQAM, DFT-s-OFDM, OQAM, DFT-s-OFDM], [OQAM, DFT-s-OFDM, DFT-s-OFDM, OQAM], [DFT-s-OFDM, OQAM, OQAM, DFT-s-OFDM M], [DFT-s-OFDM, OQAM, DFT-s-OFDM, OQAM], [DFT-s-OFDM, DFT-s-OFDM, OQAM, OQAM], [OQAM, OQA M, DFT-s-OFDM, DFT-s-OFDM], [OQAM, DFT-s-OFDM, OQAM, DFT-s-OFDM], [OQAM, DFT-s-OFDM, DFT-s -OFDM, OQAM], [DFT-s-OFDM, OQAM, OQAM, DFT-s-OFDM], [DFT-s-OFDM, OQAM, DFT-s-OFDM, OQAM], [DFT-s-OFDM, DFT-s-OFDM, OQAM, OQAM], [DFT-s-OFDM, OQAM, OQAM, OQAM], [OQAM, DFT-s-OFDM, O QAM, OQAM], [OQAM, OQAM, DFT-s-OFDM, OQAM], [OQAM, OQAM, OQAM, DFT-s-OFDM], [OFDM, OQAM, OQA M, OQAM], [OQAM, OFDM, OQAM, OQAM], [OQAM, OQAM, OFDM, OQAM], [OQAM, OQAM, OQAM, OFDM].

[0318] In another example, when three waveforms are used to transmit an SSB signal, one of the three waveforms may be an OQAM waveform, one waveform may be a DFT-s-OFDM waveform, and another waveform may be an OFDM waveform. For example, in an SSB signal, the waveform used by one OFDM symbol is an OQAM waveform, the waveform used by one OFDM symbol is a DFT-s-OFDM waveform, and another OFDM symbol may be an OFDM waveform or an OQAM waveform.

[0319] For example, SSB based offset ofOFDM enabled by the active member [OQAM,OQAM,OFDM,DFT-s -OFDM]、[OQAM,OQAM,DFT-s-OFDM,OFDM]、[OQAM,OFDM,DFT -s-OFDM,OQAM]、[OQAM,OFDM,OQAM,DFT-s-OFDM]、[OQAM,DFT-s-OFDM,OQAM,OQAM]、[OQAM,DFT-s-OFDM,OFDM,OQAM] 、[DFT-s-OFDM,OQAM,OFDM,DFT-s-OFDM]、[DFT-s-OFDM,OQAM,DFT-s-OFDM,OFDM]、[DFT-s-OFDM,OQAM,DFT-s-OFDM, OQAM]、[DFT-s-OFDM,OFDM,OQAM,DFT-s-OFDM]、[DFT-s-OFDM,DFT-s-OFDM,OQAM,OFDM]、[DFT-s-OFDM,DFT-s-OFDM,O FDM,OQAM]、[DFT-s-OFDM,OQAM,OFDM,OQAM]、[DFT-s-OFDM,OQAM,OQAM,OFDM]、[DFT-s-OFDM,OQAM,OQAM,OQAM]、[OF DM,OQAM,DFT-s-OFDM,OQAM]、[OFDM,OQAM,OQAM,DFT-s-OFDM]、[OFDM,DFT-s-OFDM,OQAM,OQAM]、[OQAM,DFT-s-OFDM ,OFDM,DFT-s-OFDM]、[OQAM,DFT-s-OFDM,DFT-s-OFDM,OFDM]、[OQAM,OFDM,DFT-s-OFDM,DFT-s-OFDM]、[OFDM,DFT-s -OFDM,OQAM,DFT-s-OFDM]、[OFDM,DFT-s-OFDM,DFT-s-OFD M,OQAM]、[OFDM,OQAM,DFT-s-OFDM,DFT-s-OFDM] is a different type of interface.

[0320] In another example, the four OFDM symbols of the SSB signal include signals including PSS, DMRS, and PBCH respectively. The number of signals on each OFDM symbol can be any one of [1, 1, 1, 1], [1, 2, 1, 1], [2, 1, 1, 1], [1, 1, 2, 1], [1, 1, 1, 2], [1, 1, 2, 2], [1, 2, 2, 2], [2, 1, 2, 2], [2, 2, 1, 2], [2, 2, 2, 1], [2, 1, 1, 1], [2, 2, 2, 2], [3, 2, 2, 2], [2, 3, 2, 2], [2, 2, 2, 3], and [2, 3, 2, 2].

[0321] For example, the first OFDM symbol contains PSS, the second OFDM symbol contains DMRS, the third OFDM symbol contains PBCH, and the fourth OFDM symbol contains PBCH.

[0322] For another example, the first OFDM symbol includes DMRS, the second OFDM symbol includes PBCH, the third OFDM symbol includes PSS, and the fourth OFDM symbol includes PBCH.

[0323] For another example, the first OFDM symbol includes the PSS, the second OFDM symbol includes the PBCH and the DMRS, the third OFDM symbol includes the PBCH and the DMRS, and the fourth OFDM symbol includes the PBCH and the DMRS.

[0324] For another example, the first OFDM symbol includes PSS, PBCH and DMRS, the second OFDM symbol includes PBCH and DMRS, the third OFDM symbol includes PBCH and DMRS, and the fourth OFDM symbol includes PBCH and DMRS.

[0325] For another example, the first OFDM symbol includes PSS and DMRS, the second OFDM symbol includes PBCH, the third OFDM symbol includes PBCH, and the fourth OFDM symbol includes PBCH.

[0326] Each OFDM symbol may carry multiple signals. For example, an OFDM symbol including a DMRS may also include a PBCH.

[0327] In another example, the signals carried by the OFDM symbol of SSB may be PSS, SSS, and PBCH, respectively. The number of signals on each OFDM symbol may be any one of [1, 1, 1, 1], [1, 2, 1, 1], [2, 1, 1, 1], [1, 1, 2, 1], [1, 1, 1, 2], [1, 1, 2, 2], [1, 2, 2, 2], [2, 1, 2, 2], [2, 2, 1, 2], [2, 2, 2, 1], [2, 1, 1, 1], [2, 2, 2, 2], [3, 1, 1, 1], [1, 3, 1, 1], and [1, 1, 1, 3].

[0328] For example, the first OFDM symbol contains PSS, the second OFDM symbol contains SSS, the third OFDM symbol contains PBCH, and the fourth OFDM symbol contains PBCH.

[0329] For another example, the first OFDM symbol contains the SSS, the second OFDM symbol contains the PBCH, the third OFDM symbol contains the PSS, and the fourth OFDM symbol contains the PBCH.

[0330] For another example, the first OFDM symbol includes PSS and SSS, the second OFDM symbol includes PBCH, the third OFDM symbol includes PBCH, and the fourth OFDM symbol includes PBCH.

[0331] For another example, the first OFDM symbol includes PSS and SSS, the second OFDM symbol includes PBCH, the third OFDM symbol includes PBCH, and the fourth OFDM symbol includes PBCH.

[0332] In another example, the signals carried by the SSB signal may be PSS, SSS, PBCH, and DMRS, respectively. The number of signals on each OFDM symbol may be any one of [1, 1, 1, 1], [1, 2, 1, 1], [2, 1, 1, 1], [1, 1, 2, 1], [1, 1, 1, 2], [1, 1, 2, 2], [1, 2, 2, 2], [2, 1, 2, 2], [2, 2, 1, 2], [2, 2, 2, 1], [2, 1, 1, 1], [2, 2, 2, 2], [3, 2, 2, 2], [2, 3, 2, 2], [2, 2, 2, 3], [2, 3, 2, 2], [3, 3, 2, 2], [3, 2, 3, 2], [3, 2, 2, 3].

[0333] For example, one OFDM symbol of an SSB signal may include a PSS, one OFDM symbol may include an SSS, one OFDM symbol may include a DMRS, and one OFDM symbol may include a PBCH.

[0334] For another example, one OFDM symbol of an SSB signal may include a PSS and an SSS, one OFDM symbol may include a DMRS, one OFDM symbol may include a PBCH, and one OFDM symbol may include a PBCH.

[0335] For another example, one OFDM symbol of an SSB signal may include a PSS and a DMRS, one OFDM symbol may include an SSS, and one OFDM symbol may include a PBCH.

[0336] For another example, one OFDM symbol of an SSB signal may include a PSS, one OFDM symbol may include an SSS and a DMRS, one OFDM symbol may include a PBCH, and one OFDM symbol may include a PBCH.

[0337] For another example, one OFDM symbol of an SSB signal may include PSS / SSS, one OFDM symbol may include PBCH and DMRS, one OFDM symbol may include PBCH and DMRS, and one OFDM symbol may include PBCH and DMRS.

[0338] For another example, one OFDM symbol of an SSB signal may include PSS / SSS, one OFDM symbol may include PBCH and DMRS, one OFDM symbol may include PBCH and DMRS, and one OFDM symbol may include PBCH and DMRS.

[0339] For another example, one OFDM symbol of an SSB signal may include PSS / SSS, one OFDM symbol may include DMRS, one OFDM symbol may include PBCH, and one OFDM symbol may include PBCH.

[0340] For another example, an SSB signal may include a PSS in one OFDM symbol, an SSS in one OFDM symbol, a PBCH and a DMRS in one OFDM symbol, and a PBCH and a DMRS in one OFDM symbol.

[0341] For another example, an OFDM symbol of an SSB signal may include a PSS, an OFDM symbol may include an SSS, a PBCH, and a DMRS, an OFDM symbol may include a PBCH and a DMRS, and an OFDM symbol may include a PBCH and a DMRS.

[0342] For another example, one OFDM symbol of an SSB signal may include an SSS and a DMRS, the second OFDM symbol may include a PSS, and the third OFDM symbol may include a PBCH.

[0343] For another example, the first OFDM symbol of the SSB signal may include the PSS, the second OFDM symbol may include the PBCH and DMRS, and the third OFDM symbol may include the SSS.

[0344] For another example, the first OFDM symbol of the SSB signal may include the PSS, the second OFDM symbol may include the PBCH, DMRS and SSS, and the third OFDM symbol may include the PBCH and DMRS.

[0345] For another example, the first OFDM symbol of the SSB signal may include PSS and SSS, the second OFDM symbol may include PBCH and DMRS, and the third OFDM symbol may include PBCH and DMRS.

[0346] For another example, the first OFDM symbol of an SSB signal may include a PSS and a DMRS, the second OFDM symbol may include a PBCH, a DMRS, and an SSS, and the third OFDM symbol may include a PBCH and a DMRS.

[0347] Based on this embodiment, the signal transmitter can use OQAM waveforms and other waveforms to transmit SSB signals, thereby reducing the PAPR of the SSB signal and improving the estimation performance of the SSB signal.

[0348] The various solutions in the above embodiments of the present application can be combined under the premise that there is no contradiction.

[0349] In the embodiments provided in the present application above, the methods provided in the embodiments of the present application are introduced from the perspective of the interaction between the master device and the slave device. It is understandable that, in order to implement the various functions in the methods provided in the embodiments of the present application above, each network element, such as the master device and the slave device, includes a hardware structure and / or software module corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0350] In the embodiment of the present application, the functional modules of the master device and the slave device can be divided according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.

[0351] In the case of an integrated unit, FIG23 shows a possible structural diagram of the communication device involved in the above embodiment (denoted as communication device 230). The communication device 230 includes a communication unit 2302 and a processing unit 2301, and may also include a storage unit 2303. The structural diagram shown in FIG23 can be used to illustrate the structure of the main device involved in the above embodiment.

[0352] When the structural diagram shown in FIG23 is used to illustrate the structure of the signal transmitting end involved in the above-mentioned embodiments, the processing unit 2301 is used to control and manage the actions of the signal transmitting end. For example, the processing unit 2301 executes steps 1901 and 1902 in FIG19 and / or the actions performed by the master device in other processes described in the embodiments of this application through the communication unit 2302. The processing unit 2301 can communicate with other network entities, such as the signal receiving end, through the communication unit 2302. The storage unit 2303 is used to store the program code and data of the master device.

[0353] When the structural diagram shown in FIG23 is used to illustrate the structure of the signal transmitting end involved in the above embodiment, the communication device 230 can be the signal transmitting end or a chip within the signal transmitting end.

[0354] In which, when the communication device 230 is a signal transmitting end, the processing unit 2301 may be a processor or a controller, and the communication unit 2302 may be a communication interface, a transceiver, a transceiver, a transceiver circuit, a transceiver device, etc. In which, the communication interface is a general term and may include one or more interfaces. The storage unit 2303 may be a memory. When the communication device 230 is a chip in the signal transmitting end, the processing unit 2301 may be a processor or a controller, and the communication unit 2302 may be an input interface and / or output interface, a pin or a circuit, etc. The storage unit 2303 may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the terminal device located outside the chip (for example, a read-only memory (ROM), a random access memory (RAM), etc.).

[0355] In the case of an integrated unit, FIG24 shows a possible structural diagram of the communication device involved in the above embodiment (denoted as communication device 240). The communication device 240 includes a communication unit 2402 and may also include a processing unit 2401 and a storage unit 2403. The structural diagram shown in FIG24 can be used to illustrate the structure of the signal receiving end involved in the above embodiment.

[0356] When the structural diagram shown in FIG24 is used to illustrate the structure of the signal receiving end involved in the above-mentioned embodiments, the processing unit 2401 is used to control and manage the actions of the signal receiving end through the communication unit 2402. For example, the processing unit 2401 is used to receive SSB signals and / or the actions performed by the signal transmitting end in other processes described in the embodiments of the present application through the communication unit 2402. The processing unit 2401 can communicate with other entities through the communication unit 2402, for example, communicating with the signal transmitting end. The storage unit 2403 is used to store program code and data of the signal transmitting end.

[0357] When the structural diagram shown in FIG24 is used to illustrate the structure of the signal transmitting end involved in the above embodiment, the communication device 240 can be the signal transmitting end or a chip within the signal transmitting end.

[0358] In which, when the communication device 240 is a slave device, the processing unit 2401 can be a processor or a controller, and the communication unit 2402 can be a communication interface, a transceiver, a transceiver, a transceiver circuit, a transceiver device, etc. In which, the communication interface is a general term and can include one or more interfaces. The storage unit 2403 can be a memory. When the communication device 240 is a chip in a slave device, the processing unit 2401 can be a processor or a controller, and the communication unit 2402 can be an input interface and / or output interface, a pin or a circuit, etc. The storage unit 2403 can be a storage unit in the chip (for example, a register, a cache, etc.), or it can be a storage unit located outside the chip in the signal sending end or the signal sending end (for example, a read-only memory (ROM), a random access memory (RAM), etc.).

[0359] Among them, the communication unit can also be called a transceiver unit. The antenna and control circuit with transceiver functions in the communication device 230 and the communication device 240 can be regarded as the communication unit of the communication device, and the processor with processing function can be regarded as the processing unit of the communication device. Optionally, the device used to implement the receiving function in the communication unit can be regarded as a receiving unit, and the receiving unit is used to perform the receiving steps in the embodiment of the present application. The receiving unit can be a receiver, a receiver, a receiving circuit, etc. The device used to implement the sending function in the communication unit can be regarded as a sending unit, and the sending unit is used to perform the sending steps in the embodiment of the present application. The sending unit can be a transmitter, a transmitter, a sending circuit, etc.

[0360] If the integrated units in Figures 23 and 24 are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the method described in each embodiment of the present application. The storage medium for storing computer software products includes various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

[0361] The units in Figures 23 and 24 can also be called modules. For example, the processing unit can be called a processing module.

[0362] As shown in Figure 25, Figure 25 shows an example diagram of a communication system provided in an embodiment of the present application, including a signal transmitting end 2501 and a signal transmitting end 2502.

[0363] The signal sending end 2501 is used to execute the actions executed by the signal sending end in the above embodiment. For example, the signal sending end 2501 is used to execute steps 1901 and 1902 in FIG. 19 .

[0364] The signal transmitting end 2502 is used to perform the actions performed at the signal transmitting end in the above embodiment. For example, the signal transmitting end 2502 is used to receive the SSB signal.

[0365] During implementation, each step of the method provided in this embodiment can be completed by hardware integrated logic circuits in a processor or by software instructions. The steps of the method disclosed in the embodiments of this application can be directly implemented as execution by a hardware processor, or by a combination of hardware and software modules in a processor.

[0366] The processor in this application may include, but is not limited to, at least one of the following: a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller unit (MCU), or an artificial intelligence processor, and other types of computing devices that run software. Each computing device may include one or more cores for executing software instructions to perform operations or processing. The processor may be a separate semiconductor chip, or it may be integrated into a semiconductor chip together with other circuits. For example, it may form an SoC (system on a chip) with other circuits (such as a codec circuit, a hardware acceleration circuit, or various bus and interface circuits), or it may be integrated into the ASIC as a built-in processor of the ASIC. The ASIC with the integrated processor may be packaged separately or together with other circuits. In addition to the core for executing software instructions to perform operations or processing, the processor may further include necessary hardware accelerators, such as a field programmable gate array (FPGA), a PLD (programmable logic device), or a logic circuit that implements dedicated logic operations.

[0367] The memory in the embodiments of the present application may include at least one of the following types: read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or electrically erasable programmable read-only memory (EEPROM). In some scenarios, the memory may also be a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to this.

[0368] An embodiment of the present application also provides a computer-readable storage medium, comprising instructions, which, when executed on a computer, enables the computer to execute any of the above methods.

[0369] An embodiment of the present application also provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute any of the above methods.

[0370] An embodiment of the present application also provides a communication system, including: the above-mentioned master device and slave device.

[0371] An embodiment of the present application also provides a chip, which includes a processor and an interface circuit, the interface circuit is coupled to the processor, the processor is used to run a computer program or instruction to implement the above method, and the interface circuit is used to communicate with other modules outside the chip.

[0372] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware, or any combination thereof. When implemented using a software program, all or part of the embodiments can be implemented 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, all or part of the processes or functions described in the embodiments of the present application are generated. 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 transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more media integrated therein. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)).

[0373] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other variations of the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0374] Although the present application has been described with reference to specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely illustrative of the present application as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, the present application is intended to include such modifications and variations as fall within the scope of the claims of the present application and their equivalents.

Claims

1. A communication method, characterized in that: include: Acquire a synchronization signal block SSB signal, where the SSB signal includes at least one of a physical broadcast signal PBCH, a demodulation reference signal DMRS, a primary synchronization signal PSS, and a secondary synchronization signal SSS; The SSB signal is sent using a modulation signal real and imaginary separation method, wherein the modulation signal real and imaginary separation method refers to separating the real part and the imaginary part of the signal.

2. The method according to claim 1, characterized in that The method of sending the SSB signal by separating the real and virtual modulation signals includes: The SSB signal is transmitted using an offset quadrature amplitude modulation (OQAM) waveform.

3. The method according to claim 1, characterized in that The method of sending the SSB signal by separating the real and virtual modulation signals includes: The SSB signal is transmitted using an OQAM waveform and an Orthogonal Frequency Division Multiplexing (OFDM) waveform.

4. The method according to claim 3, characterized in that The method of using an OQAM waveform and an orthogonal frequency division multiplexing (OFDM) waveform to send the SSB signal includes: The DMRS is sent using the OFDM waveform, and other signals in the SSB signal except the DMRS are sent using the OQAM.

5. The method according to claim 3, characterized in that: The using the OQAM wave and the OFDM wave to send the SSB signal comprises: The SSS is transmitted using the OFDM waveform, and other signals except the SSS in the SSB signal are transmitted using the OQAM waveform.

6. The method according to claim 1, characterized in that The method of sending the SSB signal by using a real-virtual separation method of a modulation signal includes: The SSB signal is transmitted using an OQAM waveform and a discrete Fourier transform spread orthogonal frequency division multiplexing DFT-s-OFDM waveform.

7. The method according to claim 6, characterized in that The sending of the SSB signal using the OQAM waveform and the DFT-s-OFDM waveform comprises: The PSS is transmitted using the DFT-s-OFDM waveform, and other signals except the PSS in the SSB signal are transmitted using the OQAM waveform.

8. The method according to claim 1, characterized in that The method of sending the SSB signal by using a real-virtual separation method of a modulation signal includes: The SSB signal is transmitted using an OQAM waveform, a DFT-s-OFDM waveform, and an OFDM waveform.

9. The method according to claim 8, characterized in that The sending of the SSB signal using an OQAM waveform, a DFT-s-OFDM waveform, and an OFDM waveform includes: The PSS is sent using the DFT-s-OFDM waveform, the DMRS is sent using the OFDM waveform, and other signals in the signal except the PSS and the DMRS are sent using an OQAM waveform.

10. A communication device, characterized in that: The communication device comprises: a processor and a communication interface coupled to the processor, The processor is configured to: Acquire a synchronization signal block SSB signal through the communication interface, wherein the SSB signal includes at least one of a physical broadcast signal PBCH, a demodulation reference signal DMRS, a primary synchronization signal PSS, and a secondary synchronization signal SSS; The SSB signal is sent through the communication interface using a method of separating the real and imaginary parts of the modulation signal, wherein the method of separating the real and imaginary parts of the modulation signal refers to separating the real part and the imaginary part of the signal.

11. A communication device, characterized in that: The communication device includes one or more processors and one or more memories; the one or more memories are coupled to the one or more processors, and the one or more memories are used to store computer program codes or computer instructions; When one or more processors execute the computer instructions, the communication device is caused to perform the method according to any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions or programs. When the computer instructions or programs are executed on a computer, the computer is enabled to execute the method according to any one of claims 1 to 9.

Images