Signal Sending and Receiving Method, Apparatus, Electronic Device, and Storage Medium

Abstract

The present application provides a signal sending and receiving method, device, electronic device and storage medium, which relates to the field of communication technologies. In this method, an initial synchronization pilot signal is generated, and the initial synchronization pilot signal includes a pilot header signal and at least one pilot tail signal. Then, the pilot header signal and each pilot tail signal can be sent at a set time interval. In this way, the transmission density of the pilot signal is increased, enabling the receiving end to estimate the transmission delay of the signal based on the received signal, thereby obtaining the variation law of the transmission delay, so as to achieve delay estimation in a high-speed mobile communication scenario, reduce the synchronization error, and further achieve continuous synchronization of the signal in a high-speed mobile communication scenario.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a signal sending and receiving method, apparatus, electronic device, and storage medium. Background Art

[0002] In current mobile communication technologies represented by LTE (Long Term Evolution, the fourth-generation mobile communication technology) and NR (New Radio, the fifth-generation mobile communication technology), OFDM (Orthogonal Frequency Division Multiplexing) is used as the key air interface transmission technology. The signal demodulation of an OFDM system requires that the arrival time of the signal at the receiving end meets a certain signal synchronization accuracy requirement (that is, the error between the actual arrival time of the channel at the receiving end and the expected time is less than a certain range). Therefore, the first step in establishing a communication link in an OFDM system is to establish a signal synchronization mechanism between the transmitting end and the receiving end.

[0003] In related technologies, the transmitting end transmits an initial synchronization pilot signal, and after receiving the initial synchronization pilot signal, the receiving end uses a synchronization algorithm to establish a synchronization mechanism with the transmitting end. For example, in traditional OFDM represented by a terrestrial commercial wireless communication network, the protocol (here refers to the 3GPP 38.211 protocol, Realease17 version) stipulates that the base station uses SSB (Synchronization Signal Block) as the initial synchronization pilot signal to broadcast and transmit periodically in the cell, and the terminal device can establish a signal synchronization mechanism with the base station after receiving the SSB signal.

[0004] In a high-speed mobile communication scenario, since the physical distance between the transmitting end and the receiving end changes rapidly, the signal transmission delay between the transmitting end and the receiving end also changes rapidly. If the existing method is used to perform signal synchronization with a fixed delay, the signal synchronization error will be relatively large, and thus the signal demodulation requirements in the OFDM system cannot be met. Summary of the Invention

[0005] The purpose of the embodiments of this application is to provide a signal sending and receiving method, apparatus, electronic device, and storage medium, so as to improve the problem that a relatively large synchronization error is caused by using a fixed delay for signal synchronization in the prior art, and thus the signal demodulation requirements cannot be met.

[0006] In a first aspect, the embodiments of this application provide a signal sending method, and the method includes:

[0007] Generate an initial synchronization pilot signal, where the initial synchronization pilot signal includes a pilot head signal and at least one pilot tail signal, the pilot head signal is a synchronization signal block (SSB) signal, and the pilot tail signal satisfies orthogonality with the primary synchronization signal (PSS) in the SSB signal;

[0008] Transmit the pilot head signal and each pilot tail signal in the initial synchronization pilot signal at a set time interval.

[0009] In the above implementation process, by generating an initial synchronization pilot signal which includes a pilot head signal and at least one pilot tail signal, and then transmitting the pilot head signal and each pilot tail signal at a set time interval, the transmission density of the pilot signal is increased, enabling the receiving end to estimate the signal transmission delay based on the received signal, thereby obtaining the variation law of the transmission delay to achieve delay estimation in a high-speed mobile communication scenario, reducing the synchronization error, and further achieving continuous synchronization of the signal in a high-speed mobile communication scenario.

[0010] Optionally, the generating the initial synchronization pilot signal includes:

[0011] Convert the secondary synchronization signal (SSS) in the SSB signal into a pilot tail signal to generate the pilot tail signal.

[0012] In the above implementation process, since SSS and PSS satisfy orthogonality, converting SSS into a pilot tail signal can make the pilot tail signal also satisfy orthogonality with PSS, thus not affecting the detection of PSS by the receiving end.

[0013] Optionally, the converting the secondary synchronization signal (SSS) in the SSB signal into a pilot tail signal to generate the pilot tail signal includes:

[0014] Use a conversion function to convert the secondary synchronization signal (SSS) in the SSB signal into a pilot tail signal to generate the pilot tail signal;

[0015] Wherein, the conversion function is a function regarding linear operations, and the linear operations include multiplication operations. Since multiplication operations do not change the orthogonal relationship between two originally orthogonal signals, the obtained pilot tail signal will also satisfy orthogonality with PSS.

[0016] Optionally, one pilot tail signal occupies one orthogonal frequency division multiplexing (OFDM) symbol for transmission. In this way, the pilot tail signal can be transmitted through OFDM symbols, and it is convenient to set the time interval in units of OFDM symbols.

[0017] In a second aspect, an embodiment of the present application provides a signal receiving method, and the method includes:

[0018] Receive an initial synchronization pilot signal, where the initial synchronization pilot signal includes a pilot header signal and at least one pilot tail signal, the pilot header signal is a synchronization signal block (SSB) signal, and the pilot tail signal satisfies orthogonality with the primary synchronization signal (PSS) in the SSB signal;

[0019] According to the actual reception time of the pilot header signal and each pilot tail signal in the initial synchronization pilot signal and a set time interval, estimate the variation law of the signal transmission time delay, where the set time interval is the time interval for the transmitting end to send the pilot header signal and each pilot tail signal in the initial synchronization pilot signal.

[0020] In the above implementation process, the receiving end can use the transmission time interval between the pilot header signal and each pilot tail signal in the initial synchronization pilot signal to estimate the variation law of the transmission time, so as to achieve time delay estimation in a high-speed mobile communication scenario, reduce the synchronization error, and further achieve continuous synchronization of the signal in a high-speed mobile communication scenario.

[0021] Optionally, after estimating the variation law of the signal transmission time delay, it further includes:

[0022] Use the variation law of the signal transmission time delay to perform time synchronization on the initial synchronization pilot signal. In this way, a more accurate synchronization position can be found according to the variation law of the signal transmission time delay, more accurate synchronization can be achieved, the synchronization accuracy can be improved, and the synchronization error can be reduced.

[0023] In a third aspect, an embodiment of the present application provides a signal processing system, and the system includes:

[0024] A transmitting end, configured to generate an initial synchronization pilot signal, where the initial synchronization pilot signal includes a pilot header signal and at least one pilot tail signal, the pilot header signal is a synchronization signal block (SSB) signal, and the pilot tail signal satisfies orthogonality with the primary synchronization signal (PSS) in the SSB signal; and send the pilot header signal and each pilot tail signal in the initial synchronization pilot signal at a set time interval;

[0025] A receiving end, configured to receive the initial synchronization pilot signal, and estimate the variation law of the signal transmission time delay according to the actual reception time of the pilot header signal and each pilot tail signal in the initial synchronization pilot signal and the set time interval.

[0026] In a fourth aspect, an embodiment of the present application provides a signal sending device, and the device includes:

[0027] A signal generation module, configured to generate an initial synchronization pilot signal, where the initial synchronization pilot signal includes a pilot header signal and at least one pilot tail signal, the pilot header signal is a synchronization signal block (SSB) signal, and the pilot tail signal satisfies orthogonality with the primary synchronization signal (PSS) in the SSB signal;

[0028] A signal transmission module, configured to transmit the pilot header signal and each pilot tail signal in the initial synchronization pilot signal at a set time interval.

[0029] In a fifth aspect, an embodiment of the present application provides a signal receiving device, which includes:

[0030] A signal receiving module, configured to receive an initial synchronization pilot signal, where the initial synchronization pilot signal includes a pilot header signal and at least one pilot tail signal, the pilot header signal is a synchronization signal block (SSB) signal, and the pilot tail signal satisfies orthogonality with the primary synchronization signal (PSS) in the SSB signal;

[0031] A time delay estimation module, configured to estimate the variation law of signal transmission time delay according to the actual reception time of the pilot header signal and each pilot tail signal in the initial synchronization pilot signal and the set time interval, where the set time interval is the time interval for the transmitting end to transmit the pilot header signal and each pilot tail signal in the initial synchronization pilot signal.

[0032] In a sixth aspect, an embodiment of the present application provides an electronic device, including a processor and a memory, where the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the steps in the method provided in the first aspect above are run.

[0033] In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps in the method provided in the first aspect above are run.

[0034] In an eighth aspect, an embodiment of the present application provides a computer program product, including computer program instructions, and when the computer program instructions are read and run by a processor, the steps in the method provided in the first aspect above are executed.

[0035] Other features and advantages of the present application will be described in the subsequent specification, and part of them will become obvious from the specification, or can be understood by implementing the embodiments of the present application. The objectives and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written specification, claims, and drawings. Description of the Drawings

[0036] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0037] Figure 1 It is a flowchart of a signal sending method provided by an embodiment of the present application;

[0038] Figure 2 It is a flowchart of a signal receiving method provided by an embodiment of the present application;

[0039] Figure 3 It is a structural block diagram of a signal sending device provided by an embodiment of the present application;

[0040] Figure 4 It is a structural block diagram of a signal receiving device provided by an embodiment of the present application;

[0041] Figure 5 It is a structural schematic diagram of an electronic device for executing a signal sending method or a signal processing method provided by an embodiment of the present application. Specific embodiments

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application.

[0043] It should be noted that the terms "system" and "network" in the embodiments of the present invention can be used interchangeably. "Multiple" means two or more. In view of this, in the embodiments of the present invention, "multiple" can also be understood as "at least two". "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " generally represents an "or" relationship between the associated objects before and after without special instructions.

[0044] An embodiment of the present application provides a signal sending method. This method generates an initial synchronization pilot signal, where the initial synchronization pilot signal includes a pilot head signal and at least one pilot tail signal, and then the pilot head signal and each pilot tail signal can be sent at a set time interval. In this way, the transmission density of the pilot signal is increased, enabling the receiving end to estimate the transmission delay of the signal based on the received signal, thereby obtaining the variation law of the transmission delay, so as to achieve delay estimation in a high-speed mobile communication scenario, reduce the synchronization error, and further achieve continuous synchronization of the signal in a high-speed mobile communication scenario.

[0045] Please refer toFigure 1 , Figure 1 is a flowchart of a signal sending method provided by an embodiment of the present application. This method is applied to a transmitting end and includes the following steps:

[0046] Step S110: Generate an initial synchronization pilot signal.

[0047] Among them, the initial synchronization pilot signal includes a pilot head signal and at least one pilot tail signal. The pilot head signal is an SSB signal, and the pilot tail signal satisfies orthogonality with the PSS (Primary Synchronization Signal) in the SSB signal.

[0048] In this solution, when the transmitting end transmits the synchronization pilot signal, adding a pilot tail signal at the tail of the SSB signal is equivalent to adding a pilot signal between each SSB signal, improving the transmission density of the pilot signal. In a high-speed moving scenario, the receiving end can estimate the transmission delay of the signal based on the received signal, and then it is convenient to perform signal synchronization processing.

[0049] Among them, the pilot tail signal satisfies orthogonality with the PSS in the SSB signal because in the initial synchronization process, the receiving end first needs to complete the search and synchronization of the PSS. During this process, the receiving end may not have any prior information about the arrival time of the PSS and needs to perform continuous time-domain sliding window detection on the received signal to find the PSS. This requires other signals (SSS (Secondary Synchronization Signal) and the pilot tail signal) to satisfy a certain orthogonality with the PSS (i.e., showing low correlation in the time-domain sliding window detection) to prevent detection errors. Since the SSS and the PSS satisfy a certain orthogonality requirement, and the orthogonality between the pilot tail signal and the PSS is the same as that between the SSS and the PSS, it will not affect the detection of the PSS by the receiving end.

[0050] The transmitting end and the receiving end can pre-agree on the content of the initial synchronization pilot signal, including the content of the pilot head signal and the pilot tail signal. The pilot head signal includes the SSB signal. As long as the pilot tail signal satisfies orthogonality with the PSS, the pilot tail signal can be constructed through certain rules in advance. The generation method of the SSB signal can refer to the requirements in the relevant protocol. The SSB signal consists of 4 consecutive OFDM symbols in the time domain, and each pilot tail signal can occupy one OFDM symbol and is sent immediately after the SSB signal.

[0051] In addition, the transmitting end and the receiving end can also pre-agree on the number of pilot tail signals. For example, the value of the number N of pilot tail signals ranges from 1 to 1024. The specific value of N can be obtained through negotiation between the transmitting end and the receiving end.

[0052] Step S120: Transmit the pilot header signal and each pilot tail signal in the initial synchronization pilot signal at a set time interval.

[0053] When the transmitting end sends a signal, it can be sent at a set time interval. For example, the transmitting end and the receiving end can pre - agree on the time interval between the pilot header signal and the first pilot tail signal, as well as the time interval between each pilot tail signal.

[0054] In some embodiments, the time intervals between each signal can be different. For example, the time interval between the pilot header signal and the first pilot tail signal is T1, the time interval between the first pilot tail signal and the second pilot tail signal is T2, and the time interval between the second pilot tail signal and the third pilot tail signal is T3. Similarly, the time intervals between each pilot tail signal can also be set according to the actual situation. Of course, for the convenience of the receiving end to quickly estimate the signal time delay, the time intervals between each signal can be the same, such as all being T.

[0055] The time interval here can be in units of OFDM symbols. For example, the time interval between each signal is 3 OFDM symbols, which is convenient for setting the time interval in units of OFDM symbols.

[0056] It can be understood that if the transmitting end periodically sends SSB signals, then certain requirements need to be set for the time interval between the pilot tail signals. For example, the sum of the time intervals should be less than the period of sending SSB signals. If the transmitting end sends SSB signals at intervals, then the sum of the time intervals between the pilot tail signals is less than the time interval between these two SSB signals.

[0057] When the transmitting end sends the initial synchronization pilot signal, it can be sent according to the set time interval between each signal. For example, after sending the pilot header signal, the first pilot tail signal is sent after an interval of 3 OFDM symbols, and then the second pilot tail signal is sent after another interval of 3 OFDM symbols. Similarly, the transmitting end continues to send the pilot tail signals until the last pilot tail signal is sent.

[0058] In the above implementation process, by generating the initial synchronization pilot signal, which includes the pilot header signal and at least one pilot tail signal, and then sending the pilot header signal and each pilot tail signal at a set time interval, the transmission density of the pilot signal is increased, enabling the receiving end to estimate the transmission time delay of the signal based on the received signal, thereby obtaining the variation law of the transmission time delay, so as to achieve time delay estimation in a high - speed mobile communication scenario, reduce the synchronization error, and further achieve continuous synchronization of the signal in a high - speed mobile communication scenario.

[0059] Based on the above embodiments, in the manner of generating the initial synchronization pilot signal, the SSS in the SSB signal can be converted into a pilot tail signal to generate the pilot tail signal.

[0060] In some embodiments, the SSS in the SSB can be directly used as the pilot tail signal, which can ensure that the orthogonality is satisfied between each pilot tail signal and the PSS.

[0061] In other embodiments, a set conversion function can be used to convert the SSS in the SSB signal into a pilot tail signal to generate the pilot tail signal.

[0062] Since the original SSS and PSS satisfy orthogonality, using the conversion function to convert the SSS into a pilot tail signal can retain the orthogonality between the SSS and the PSS, making the pilot tail signal also satisfy orthogonality with the PSS.

[0063] In the specific implementation process, the conversion function can be expressed as f n (), n = 1, 2..., N, where N is the number of pilot tail signals. The conversion function can be to convert the SSS itself. For example, the SSS in the SSB can be directly used as the pilot tail signal, which can ensure that the orthogonality is satisfied between each pilot tail signal and the PSS.

[0064] In the above implementation process, since the SSS and PSS satisfy orthogonality, using the conversion function to convert the SSS into a pilot tail signal can make the pilot tail signal also satisfy orthogonality with the PSS, thus not affecting the detection of the PSS at the receiving end.

[0065] Based on the above embodiments, the conversion function can be a function regarding linear operations, and the linear operations can include scalar multiplication operations. Since scalar multiplication operations do not change the orthogonal relationship between two originally orthogonal signals, the obtained pilot tail signal and the PSS will also satisfy orthogonality.

[0066] In some embodiments, the conversion function can be expressed as follows:

[0067] f n (S n ) = S SSS *x;

[0068] Where S n represents the nth pilot tail signal, S SSS represents the SSS signal, and x represents a non-zero complex number. In this way, only the phase and amplitude of the SSS signal need to be changed, without changing the directivity of the SSS signal. Therefore, the obtained pilot tail signal after conversion also satisfies orthogonality with the PSS.

[0069] In some other implementation manners, the conversion function can also be expressed as follows:

[0070] f n (S n ) = S SSS *c*e jθ ;

[0071] Wherein, S n represents the nth pilot tail signal, S SSS represents the SSS signal, c represents any positive real number, θ represents any real number. Through this conversion formula, the amplitude and common phase of the SSS signal can be changed, and the directivity of the SSS signal will not be changed. Therefore, the obtained pilot tail signal after conversion also satisfies orthogonality with the PSS.

[0072] In other embodiments, a known signal (i.e., a set signal) can also be artificially constructed and used as the pilot tail signal, as long as the constructed known signal satisfies orthogonality with the PSS. Or the known signal is linearly converted using the above conversion function to obtain the pilot tail signal. Since the constructed known signal satisfies orthogonality with the PSS, the obtained pilot tail signal can also satisfy orthogonality with the PSS.

[0073] For example, assume that the current SSS signal is generated using the physical cell identity group (i.e., the parameters in Protocol 211 (such as Protocol 3GPP38.211, Release 17 version)) and generation method. For example the value of sss, is equal to n and then generated according to the generation method of the SSS sequence in Protocol 211. Then the known signal can also be generated in the same way. For example, when constructing the known signal, the physical cell identity group sss, ∈{0,…,335} and n sss, ≠n sss, , and then the known signal can be generated similarly through the generation method of the SSS sequence in Protocol 211.

[0074] Based on the above embodiments, when the transmitting end sends the initial synchronization pilot signal, it can send the nth pilot tail signal first, then use the conversion function to obtain the pilot tail signal and then send it, or obtain the pilot tail signal using the conversion function before sending the SSB signal. For example, the transmitting end transmits the SSB according to the regulations in the communication protocol, and then after an interval of a set time interval, sends the first pilot tail signal, and continues to send the second pilot tail signal at the set time interval until the last pilot tail signal is sent.

[0075] Understandably, each pilot tail signal can also be different, that is, the conversion functions corresponding to each pilot tail signal can be different. For example, the nth pilot tail signal refers to the SSS signal itself, while the (n + i)th pilot tail signal can be obtained by conversion through the above conversion function. The specific conversion rules for each pilot tail signal can be jointly negotiated and agreed upon by the transmitting end and the receiving end.

[0076] Based on the above embodiments, in this solution, the initial synchronization pilot signal is designed to be composed of multiple segments of synchronization pilot signals with a certain interval in time, including a pilot head signal and multiple pilot tail signals. In this way, the receiving end can periodically estimate the transmission delay of the received signal at a certain frequency, so as to obtain the variation law of the transmission delay and complete the continuous synchronization of the received signal. Moreover, when the receiving end estimates the signal transmission delay, it needs to obtain the content of the initial synchronization pilot signal to complete the delay detection operation. In this solution, the pilot tail signal is generated by mutual agreement between the transmitting end and the receiving end, so the receiving end can directly deduce the content of the pilot tail signal. Therefore, this solution does not require additional system signaling overhead.

[0077] Please refer to Figure 2 , Figure 2 which is a flowchart of a signal receiving method provided by an embodiment of the present application. This method is applied to the receiving end and includes the following steps:

[0078] Step S210: Receive the initial synchronization pilot signal.

[0079] Among them, the initial synchronization pilot signal is as described in the above embodiments, including a pilot head signal and at least one pilot tail signal. The pilot head signal is an SSB signal, and the pilot tail signal satisfies orthogonality with the PSS in the SSB signal. The specific generation method of the initial synchronization pilot signal can refer to the relevant description in the above embodiments and will not be elaborated here. After the transmitting end generates the initial synchronization pilot signal, it sends the initial synchronization pilot signal to the receiving end.

[0080] Step S220: Estimate the variation law of the signal transmission delay according to the actual reception time and the set time interval of the pilot head signal and each pilot tail signal in the initial synchronization pilot signal.

[0081] Here, the set time interval is the time interval for the transmitting end to send the pilot head signal and each pilot tail signal. The explanation of the set time interval can also refer to the relevant description in the above embodiments and will not be elaborated here.

[0082] In an actual communication environment, affected by environmental factors such as multipath effects, signals do not arrive at the receiving end at the set time, and there are also some time delay effects. In a high-speed mobile scenario, the communication environment is constantly changing, and the time delay is not fixed under different communication environments. Therefore, in order to ensure the accuracy of synchronization, the receiving end needs to perform time delay estimation in a high-speed mobile scenario.

[0083] Theoretically, the transmitting end sends signals at set time intervals, and the receiving end is also supposed to receive signals at set time intervals. However, due to environmental changes resulting in time delay variations, the time intervals at which the receiving end receives signals are not fixed. So, the receiving end can obtain the actual reception times of the received signals, including the reception times of the pilot head signal and each pilot tail signal. Then, using the time interval at transmission (theoretically, the time interval at transmission is the same as the time interval at reception), the receiving end can know the time intervals between the received signals. Therefore, after receiving the SSB signal, the receiving end can know at which theoretical moment each pilot tail signal should be received.

[0084] Taking the set time interval between each signal as T for example, assume the receiving end receives the SSB signal at time T 1 . Theoretically, the receiving end should receive the first pilot tail signal at T 1 + T, and receive the second pilot tail signal at T 1 + 2T, and so on. Thus, the time points at which the receiving end receives each pilot tail signal can be inferred. If the receiving end receives the first pilot tail signal at time T 2 , and the time interval at this time is T 2 - T 1 , then by comparing the difference with T, a time delay t 1 is obtained. When the receiving end receives the second pilot tail signal at time T 3 , and the time interval at this time is T 3 - T 2 , then by comparing the difference with T, a time delay t 2 is obtained. In the same way, if the moment when the receiving end receives the last pilot tail signal is T N , and the time interval is T N - T N-1 , then by comparing the difference with T, a time delay t N is obtained. In this way, the receiving end can obtain N time delays.

[0085] The variation of these N time delays over time can form the variation law of the transmission time delay, so that the receiving end can realize time delay estimation in a high-speed motion scenario, and thus estimate the time delay in different environments.

[0086] In the above implementation process, the receiving end can use the transmission time intervals of the pilot head signal and each pilot tail signal in the initial synchronization pilot signal to estimate the variation law of the transmission time, so as to achieve delay estimation in high-speed mobile communication scenarios, reduce synchronization errors, and then achieve continuous synchronization of signals in high-speed mobile communication scenarios.

[0087] Based on the above embodiments, the receiving end can perform time synchronization on the initial synchronization pilot signal by using the variation law of the signal transmission delay.

[0088] The synchronization of the OFDM system mainly includes symbol timing synchronization (i.e., time synchronization) and carrier frequency synchronization. Among them, the purpose of symbol timing synchronization is to detect the data frame and find the accurate starting position of the valid signal in the received signal, that is, the positioning of the FFT window. Incorrect positioning will cause inter-symbol interference and seriously affect the performance of the system.

[0089] Since symbol timing synchronization mainly performs complex correlation operations, after the receiving end receives the initial synchronization pilot signal, it performs correlation operations with the local synchronization reference signal to calculate the correlation value, so as to find the optimal synchronization position. Here, when performing correlation operations, in order to obtain more accurate correlation values, the correlation coefficient can be set to a value not higher than 3 / L, where L is the signal length of the PSS, that is, the number of OFDM subcarriers occupied by the PSS signal.

[0090] Here, through correlation operations, this transmission delay can be compensated to find the correct synchronization position, thereby reducing the synchronization error.

[0091] When determining the transmission delay, it can be determined according to the variation law of the signal transmission delay. For example, if the variation law of the signal transmission delay refers to the variation law of the transmission delay with time, then the transmission delay can be fitted into a function of time t. In this way, at each moment, the corresponding transmission delay can be estimated through this function. Then, when performing synchronization processing, by compensating this transmission delay, the correct synchronization position can be found, and accurate signal synchronization can be achieved.

[0092] The embodiment of the present application also provides a signal processing system, which includes a transmitting end and a receiving end.

[0093] The transmitting end is used to generate an initial synchronization pilot signal, the initial synchronization pilot signal includes a pilot head signal and at least one pilot tail signal, the pilot head signal is a synchronization signal block SSB signal, and the pilot tail signal satisfies orthogonality with the primary synchronization signal PSS in the SSB signal; and the pilot head signal and each pilot tail signal in the initial synchronization pilot signal are sent at a set time interval.

[0094] A receiving end, configured to receive the initial synchronization pilot signal, and estimate the variation law of signal transmission delay according to the actual reception time of the pilot head signal and each pilot tail signal in the initial synchronization pilot signal and the set time interval.

[0095] Please refer to Figure 3 , Figure 3 FIG. 300 is a structural block diagram of a signal sending device 300 provided by an embodiment of the present application. The device 300 may be a module, a program segment, or code on an electronic device (such as a transmitting end). It should be understood that the device 300 corresponds to the above Figure 1 method embodiment, and is capable of executing Figure 1 each step involved in the method embodiment. The specific functions of the device 300 can be seen in the above description. To avoid repetition, the detailed description is appropriately omitted here.

[0096] Optionally, the device 300 includes:

[0097] A signal generation module 310, configured to generate an initial synchronization pilot signal, where the initial synchronization pilot signal includes a pilot head signal and at least one pilot tail signal, the pilot head signal is a synchronization signal block SSB signal, and the pilot tail signal satisfies orthogonality with the primary synchronization signal PSS in the SSB signal;

[0098] A signal sending module 320, configured to send the pilot head signal and each pilot tail signal in the initial synchronization pilot signal at a set time interval.

[0099] Optionally, the signal generation module 310 is configured to convert the secondary synchronization signal SSS in the SSB signal into a pilot tail signal to generate a pilot tail signal.

[0100] Optionally, the signal generation module 310 is configured to use a conversion function to convert the secondary synchronization signal SSS in the SSB signal into a pilot tail signal to generate a pilot tail signal; where the conversion function is a function regarding a linear operation, and the linear operation includes a multiplication operation.

[0101] Optionally, one pilot tail signal occupies one OFDM symbol for transmission.

[0102] Please refer to Figure 4 , Figure 4 FIG. 400 is a structural block diagram of a signal receiving device 400 provided by an embodiment of the present application. The device 400 may be a module, a program segment, or code on an electronic device (such as a receiving end). It should be understood that the device 400 corresponds to the above Figure 2 method embodiment, and is capable of executing Figure 2For each step involved in the method embodiment, the specific functions of the apparatus 400 can be referred to the description above. To avoid repetition, the detailed description is appropriately omitted here.

[0103] Optionally, the apparatus 400 includes:

[0104] A signal receiving module 410, configured to receive an initial synchronization pilot signal, where the initial synchronization pilot signal includes a pilot header signal and at least one pilot tail signal, the pilot header signal is a synchronization signal block (SSB) signal, and the pilot tail signal satisfies orthogonality with the primary synchronization signal (PSS) in the SSB signal;

[0105] A time delay estimation module 420, configured to estimate the variation law of signal transmission time delay according to the actual reception time of the pilot header signal and each pilot tail signal in the initial synchronization pilot signal and a set time interval, where the set time interval is the time interval between the transmission of the pilot header signal and each pilot tail signal by the transmitting end.

[0106] Optionally, the apparatus 400 further includes:

[0107] A synchronization module, configured to perform time synchronization on the initial synchronization pilot signal by using the variation law of signal transmission time delay.

[0108] It should be noted that those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the above-described system and apparatus can refer to the corresponding processes in the foregoing method embodiment, and will not be repeated here.

[0109] Please refer to Figure 5 , Figure 5 which is a schematic structural diagram of an electronic device for implementing a signal transmission method or a signal processing method provided in an embodiment of the present application. The electronic device may include: at least one processor 510, such as a CPU, at least one communication interface 520, at least one memory 530, and at least one communication bus 540. Among them, the communication bus 540 is used to implement connection communication between these components. Among them, the communication interface 520 of the device in the embodiment of the present application is used to communicate with other node devices for signaling or data. The memory 530 may be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. Optionally, the memory 330 may further be at least one storage device located far from the foregoing processor. The memory 530 stores computer-readable instructions. When the computer-readable instructions are executed by the processor 510, the electronic device executes the above Figure 1 or Figure 2 shown method process.

[0110] It can be understood that Figure 5 the structure shown is only schematic, and the electronic device may further include more or fewer components than those shown in Figure 5 , or have a configuration different from that shown in Figure 5 . Figure 5 Each component shown in can be implemented by hardware, software, or a combination thereof.

[0111] An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it executes the method process executed by the electronic device in the method embodiment as shown in Figure 1 or Figure 2 .

[0112] This embodiment discloses a computer program product. The computer program product includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the methods provided in the above method embodiments. For example, it includes:

[0113] generating an initial synchronization pilot signal, where the initial synchronization pilot signal includes a pilot header signal and at least one pilot tail signal, the pilot header signal is a synchronization signal block SSB signal, and the pilot tail signal satisfies orthogonality with the primary synchronization signal PSS in the SSB signal;

[0114] sending the pilot header signal and each pilot tail signal in the initial synchronization pilot signal at a set time interval.

[0115] In summary, an embodiment of the present application provides a signal sending and receiving method, device, electronic device, and storage medium. By generating an initial synchronization pilot signal, which includes a pilot header signal and at least one pilot tail signal, and then sending the pilot header signal and each pilot tail signal at a set time interval, the transmission density of the pilot signal is increased, enabling the receiving end to estimate the transmission delay of the signal based on the received signal, thereby obtaining the variation law of the transmission delay, to achieve delay estimation in a high-speed mobile communication scenario, reduce the synchronization error, and further achieve continuous synchronization of the signal in a high-speed mobile communication scenario.

[0116] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some communication interfaces. The indirect coupling or communication connection of the devices or units can be in electrical, mechanical or other forms.

[0117] In addition, the units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0118] Furthermore, in each embodiment of the present application, the functional modules can be integrated together to form an independent part, or each module can exist alone, or two or more modules can be integrated to form an independent part.

[0119] In this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0120] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A signal sending method, characterized in that: The method comprises: Generate an initial synchronization pilot signal, wherein the initial synchronization pilot signal includes a pilot header signal and at least one pilot tail signal, the pilot header signal is a synchronization signal block SSB signal, and the pilot tail signal satisfies orthogonality with a primary synchronization signal PSS in the SSB signal; Sending a pilot header signal and each pilot tail signal in the initial synchronization pilot signal at a set time interval; The generating of the initial synchronization pilot signal comprises: Converting a secondary synchronization signal SSS in the SSB signal into a pilot tail signal to generate a pilot tail signal; The converting of the secondary synchronization signal SSS in the SSB signal into a pilot tail signal to generate a pilot tail signal includes: Using a conversion function, converting a secondary synchronization signal SSS in the SSB signal into a pilot tail signal to generate a pilot tail signal; The conversion function is a function related to a linear operation, and the linear operation includes a multiplication operation.

2. The method according to claim 1, characterized in that One pilot tail signal occupies one OFDM symbol for transmission.

3. A signal receiving method, characterized in that: The method comprises: Receive an initial synchronization pilot signal, wherein the initial synchronization pilot signal includes a pilot header signal and at least one pilot tail signal, wherein the pilot header signal is a synchronization signal block SSB signal, wherein the pilot tail signal satisfies orthogonality with a primary synchronization signal PSS in the SSB signal, and wherein the pilot tail signal is generated by converting a secondary synchronization signal SSS in the SSB signal using a conversion function, wherein the conversion function is a function related to a linear operation, and wherein the linear operation includes a multiplication operation; According to the actual reception time of the pilot head signal and each pilot tail signal in the initial synchronization pilot signal and the set time interval, the signal transmission delay variation law is estimated, wherein the set time interval is the time interval for the transmitter to send the pilot head signal and each pilot tail signal in the initial synchronization pilot signal.

4. The method according to claim 3, characterized in that: After estimating the variation law of the signal transmission delay, the method further includes: The initial synchronization pilot signal is time synchronized using the variation rule of the signal transmission delay.

5. A signal processing system, characterized in that: The system comprises: A transmitting end, configured to generate an initial synchronization pilot signal, wherein the initial synchronization pilot signal includes a pilot header signal and at least one pilot tail signal, wherein the pilot header signal is a synchronization signal block SSB signal, and the pilot tail signal satisfies orthogonality with a primary synchronization signal PSS in the SSB signal; and transmit the pilot header signal and each pilot tail signal in the initial synchronization pilot signal at a set time interval, wherein the pilot tail signal is generated by converting a secondary synchronization signal SSS in the SSB signal using a conversion function, wherein the conversion function is a function of a linear operation, and the linear operation includes a multiplication operation; The receiving end is used to receive the initial synchronization pilot signal and estimate the variation rule of the signal transmission delay according to the actual reception time of the pilot head signal and each pilot tail signal in the initial synchronization pilot signal and the set time interval.

6. A signal sending device, characterized in that: The device comprises: A signal generating module, configured to generate an initial synchronization pilot signal, wherein the initial synchronization pilot signal includes a pilot header signal and at least one pilot tail signal, wherein the pilot header signal is a synchronization signal block SSB signal, and the pilot tail signal satisfies orthogonality with a primary synchronization signal PSS in the SSB signal; A signal sending module, used for sending the pilot head signal and each pilot tail signal in the initial synchronization pilot signal at a set time interval; The signal generating module is specifically used to convert the secondary synchronization signal SSS in the SSB signal into a pilot tail signal by using a conversion function to generate a pilot tail signal; The conversion function is a function related to a linear operation, and the linear operation includes a multiplication operation.

7. A signal receiving device, characterized in that: The device comprises: A signal receiving module, configured to receive an initial synchronization pilot signal, wherein the initial synchronization pilot signal includes a pilot header signal and at least one pilot tail signal, wherein the pilot header signal is a synchronization signal block SSB signal, wherein the pilot tail signal satisfies orthogonality with a primary synchronization signal PSS in the SSB signal, and wherein the pilot tail signal is generated by converting a secondary synchronization signal SSS in the SSB signal using a conversion function, wherein the conversion function is a function related to a linear operation, and wherein the linear operation includes a multiplication operation; The delay estimation module is used to estimate the signal transmission delay variation law based on the actual reception time of the pilot head signal and each pilot tail signal in the initial synchronization pilot signal and the set time interval, wherein the set time interval is the time interval for the transmitter to send the pilot head signal and each pilot tail signal in the initial synchronization pilot signal.

8. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, the method according to any one of claims 1 to 4 is executed.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 4 is performed.

10. A computer program product, characterized in that The method comprises computer program instructions, and when the computer program instructions are read and executed by a processor, the method according to any one of claims 1 to 4 is executed.

Images