Communication method and communication device

Abstract

The present application relates to the technical field of beam management, and provides a communication method and a communication device. The method comprises: a first device sends a sidelink synchronization signal block to a second device, wherein the sidelink synchronization signal block comprises or is associated with a sidelink signal, the sidelink signal is used for indicating at least one target receiving end, and the target receiving end is a receiving end of the sidelink synchronization signal block; and on the basis of the at least one target receiving end indicated by the sidelink signal, the second device determines whether the second device is a target receiving end of the sidelink synchronization signal block; if the second device is the target receiving end, the second device feeds back the sidelink synchronization signal block, and if the second device is not the target receiving end, the second device does not feed back the sidelink synchronization signal block. Therefore, the overall power consumption of the receiving end in the beam management process can be reduced.

Description

Communication method and communication device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on November 16, 2023, with application number 202311527175.3 and application name “Communication Method and Communication Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and more specifically, to a communication method and a communication device. Background Art

[0003] Beam management can be used to establish and maintain a suitable beam pair between the transmitter and the receiver. For example, during the beam management process, the transmitter and the receiver traverse the candidate beams, and determine their respective optimal beams based on the comparison of the beam measurement results, and establish a beam pair between the transmitter and the receiver. For example, the optimal transmit beam of the transmitter and the optimal receive beam of the receiver can form a beam pair.

[0004] During the beam management process between the transmitter and the receiver in the side-link (SL) scenario, the transmitter can send a sidelink synchronization signal block (S-SSB) to the receiver, and the receiver measures the S-SSB and sends the measurement result of the S-SSB to the transmitter. The transmitter can determine whether the beam corresponding to the S-SSB is the optimal beam based on the measurement result of the S-SSB.

[0005] However, the overall power consumption of the receiver during the aforementioned beam management process is relatively high. For example, the receiver needs to measure and provide feedback on all received S-SSBs. Therefore, reducing the overall power consumption of the receiver during beam management is a pressing technical issue.

[0006] Summary of the Invention

[0007] The present application provides a communication method and a communication device, which can reduce the overall power consumption of a receiving end during beam management.

[0008] In a first aspect, a communication method is provided, comprising: determining a sideline synchronization signal block, which includes a sideline signal, or is associated with a sideline signal, the sideline signal being used to indicate at least one target receiving end; and sending the sideline synchronization signal block.

[0009] The implementation entity of the solution described in the first aspect may be the first device, a module within the first device, such as a chip system, or a logical node, logic module, or software that implements all or part of the functions of the first device, without limitation. For ease of description, the following description uses the first device as an example.

[0010] A first device transmits a sidelink synchronization signal block to a second device. The sidelink synchronization signal block includes or is associated with a sidelink signal, wherein the sidelink signal is used to indicate at least one target receiving end, where the target receiving end is the receiving end of the sidelink synchronization signal block. The second device may determine whether it is the target receiving end of the sidelink synchronization signal block based on the at least one target receiving end indicated by the sidelink signal. If it is the target receiving end, the second device provides feedback for the sidelink synchronization signal block; if it is not the target receiving end, the second device does not provide feedback for the sidelink synchronization signal block.

[0011] In a possible implementation, the sending side line synchronization signal block may include: sending a side line signal and a side line synchronization signal block.

[0012] The sidelink signal may be included in the sidelink synchronization signal block or may be independent of the sidelink synchronization signal block, without limitation. When the sidelink signal is included in the sidelink synchronization signal block, it may be transmitted via the same message, or both may be transmitted simultaneously. This can be understood as the first device transmitting the sidelink signal and the sidelink synchronization signal block to the second device. In this manner, the second device can determine whether it is the intended recipient of the sidelink synchronization signal block based on the sidelink signal.

[0013] When the sidelink signal is independent of the sidelink synchronization signal block, it can be sent via two different messages, or the two can be sent at different times. This can be understood as the first device sending the sidelink signal and the sidelink synchronization signal block separately to the second device. In this way, the second device can determine whether it is the target receiving end of the sidelink synchronization signal block based on the sidelink signal.

[0014] Compared with the second device feeding back all the received side synchronization signal blocks, the above scheme allows the second device to only feed back the side synchronization signal blocks whose target receiving end is the second device. This can effectively reduce the overall power consumption of the receiving end during the beam management process, and can also effectively reduce the resource overhead of the receiving end. For example, the receiving end does not need to feed back the measurement results of each side synchronization signal block to the transmitting end.

[0015] To sum up, when the transmitting end sends a side synchronization signal block to the receiving end, it can also indicate to the receiving end whether it is the target receiving end of the side synchronization signal block. This allows the receiving end to only provide feedback for the side synchronization signal block whose target receiving end is the receiving end, which is conducive to reducing the overall power consumption of the receiving end during the beam management process, and can also effectively reduce the resource overhead of the receiving end.

[0016] In the first aspect, the aforementioned determining of a sideline synchronization signal block includes: determining at least two sideline synchronization signal blocks, the at least two sideline synchronization signal blocks being associated with at least two sideline signals; and a one-to-one mapping relationship between the position of the time-frequency resources occupied by each of the at least two sideline synchronization signal blocks and the position of the time-frequency resources occupied by the corresponding sideline signal in the at least two sideline signals. The aforementioned sending of a sideline synchronization signal block includes: sending at least two sideline synchronization signal blocks.

[0017] When the first device sends multiple side synchronization signal blocks to the second device, there is a one-to-one mapping relationship between the position of the time-frequency resources occupied by each side synchronization signal block and the position of the time-frequency resources occupied by the corresponding side signal. When the second device receives multiple side synchronization signal blocks, it can determine the associated side signal based on the mapping relationship between the two, and determine whether the target receiving end indicated by each side signal is the second device. The second device can only provide feedback for the side synchronization signal blocks whose target receiving end is the second device.

[0018] In this way, the overall power consumption of the receiving end during the beam management process can be effectively reduced, and the resource overhead of the receiving end can also be effectively reduced.

[0019] In a second aspect, a communication method is provided, comprising: receiving a sideline synchronization signal block, which includes a sideline signal, or is associated with a sideline signal, and the sideline signal is used to indicate at least one target receiving end; and determining the target receiving end of the sideline synchronization signal block based on the sideline signal.

[0020] The implementation entity of the solution described in the second aspect may be the second device, or a module within the second device, such as a chip system, or a logical node, logic module, or software that implements all or part of the functions of the second device, without limitation. For ease of description, the following description uses the second device as an example.

[0021] A first device sends a sidelink synchronization signal block to a second device. The sidelink synchronization signal block includes or is associated with a sidelink signal. The sidelink signal indicates at least one target receiving end, which is the receiving end of the sidelink synchronization signal block. The second device can determine whether it is the target receiving end of the sidelink synchronization signal block based on the at least one target receiving end indicated by the sidelink signal. If it is the target receiving end, the second device provides feedback for the sidelink synchronization signal block. If it is not the target receiving end, the second device does not provide feedback for the sidelink synchronization signal block.

[0022] In a possible implementation, the aforementioned receiving side line synchronization signal block may include: a receiving side line signal and a side line synchronization signal block.

[0023] The sidelink signal may be included in the sidelink synchronization signal block or may be independent of the sidelink synchronization signal block, without limitation. When the sidelink signal is included in the sidelink synchronization signal block, it may be transmitted via the same message, or both may be transmitted simultaneously. This can be understood as the first device transmitting the sidelink signal and the sidelink synchronization signal block to the second device. In this manner, the second device can determine whether it is the intended recipient of the sidelink synchronization signal block based on the sidelink signal.

[0024] When the sidelink signal is independent of the sidelink synchronization signal block, it can be sent via two different messages, or the two can be sent at different times. This can be understood as the first device sending the sidelink signal and the sidelink synchronization signal block separately to the second device. In this way, the second device can determine whether it is the target receiving end of the sidelink synchronization signal block based on the sidelink signal. Compared to the second device providing feedback on all received sidelink synchronization signal blocks, the above solution allows the second device to only provide feedback on the sidelink synchronization signal blocks whose target receiving end is the second device. This can effectively reduce the overall power consumption of the receiving end during beam management, and can also effectively reduce the resource overhead of the receiving end.

[0025] To sum up, when the transmitting end sends a side synchronization signal block to the receiving end, it can also indicate to the receiving end whether it is the target receiving end of the side synchronization signal block. This allows the receiving end to only provide feedback for the side synchronization signal block whose target receiving end is the receiving end, which is beneficial to reducing the overall power consumption of the receiving end during the beam management process, and is also beneficial to reducing the resource overhead of the receiving end.

[0026] In the second aspect, the method further includes: sending the measurement result of the side synchronization signal block.

[0027] When the second device is determined to be the target receiving end of the side synchronization signal block, the second device measures the side synchronization signal block and sends the measurement result of the side synchronization signal block to the first device, which is conducive to realizing beam management between the first device and the second device and can support determining a suitable beam pair between the first device and the second device.

[0028] In the second aspect, the above-mentioned receiving side synchronization signal blocks includes: receiving at least two side synchronization signal blocks, at least two side synchronization signal blocks are associated with at least two side signals; there is a one-to-one mapping relationship between the position of the time-frequency resources occupied by each side synchronization signal block in the at least two side synchronization signal blocks and the position of the time-frequency resources occupied by the corresponding side signal in the at least two side signals.

[0029] When the first device sends multiple side synchronization signal blocks to the second device, there is a one-to-one mapping relationship between the position of the time-frequency resources occupied by each side synchronization signal block and the position of the time-frequency resources occupied by the corresponding side signal. When the second device receives multiple side synchronization signal blocks, it can determine the associated side signal based on the mapping relationship between the two, and determine whether the target receiving end indicated by each side signal is the second device. The second device can only provide feedback for the side synchronization signal blocks whose target receiving end is the second device.

[0030] In this way, the overall power consumption of the receiving end during the beam management process can be effectively reduced, and the resource overhead of the receiving end can also be effectively reduced.

[0031] In combination with the scheme described in any one of the first and second aspects, the sidelink signal includes a sidelink primary synchronization signal sequence and / or a sidelink secondary synchronization signal sequence, and the sidelink primary synchronization signal sequence and / or the sidelink secondary synchronization signal sequence are used to indicate at least one target receiving end.

[0032] The above-mentioned side main synchronization signal sequence and side auxiliary synchronization signal sequence are orthogonal sequences to each other. The orthogonality between the sequences can be used to distinguish different target receiving ends, or the combination of different sequences can be used to characterize different target receiving ends. In this way, the target receiving ends can be distinguished.

[0033] In combination with the scheme described in any one of the first aspect and the second aspect, the sidelink signal includes a physical sidelink feedback channel, and the frequency domain resources corresponding to the physical sidelink feedback channel and / or the cyclic shift within the frequency domain resources are used to indicate at least one target receiving end.

[0034] Different frequency domain resources and cyclic shifts can represent different target receiving ends and can support differentiation of different target receiving ends.

[0035] In combination with the solution described in any one of the first aspect and the second aspect, the sidelink signal includes a reference signal, and the position of the time-frequency resource corresponding to the reference signal is used to indicate at least one target receiving end.

[0036] The positions of time-frequency resources corresponding to different reference signals can represent different target receiving ends, and can support differentiation of different target receiving ends.

[0037] In combination with the solution described in any one of the first aspect and the second aspect, the reference signal is located in a physical sidelink broadcast channel included in the sidelink signal.

[0038] In this way, the design of the physical sidelink broadcast channel can be made by reusing existing standards, avoiding major modifications to the current standards.

[0039] In combination with the solution described in any one of the first and second aspects, the sidelink signal includes at least one identification information, and the at least one identification information corresponds one-to-one with at least one target receiving end.

[0040] In this way, the target receiving end can be instructed.

[0041] In combination with the solution described in any one of the first aspect and the second aspect, the side synchronization signal block is used to indicate the transmitting end.

[0042] In this way, the second device can determine the sending end of the side synchronization signal block, which is conducive to feeding back the measurement results of the side synchronization signal block to the corresponding device.

[0043] In one possible implementation, the side synchronization signal block can be used to indicate both the transmitter and the target receiver at the same time.

[0044] Specifically, the sideline signal in the sideline synchronization signal block indicates a transmitting end, and the sideline primary synchronization signal sequence and the sideline secondary synchronization signal sequence in the sideline synchronization signal block indicate a target receiving end; or the sideline signal in the sideline synchronization signal block indicates a target receiving end, and the sideline primary synchronization signal sequence and the sideline secondary synchronization signal sequence in the sideline synchronization signal block indicate a transmitting end. In this way, the second device can determine the transmitting end and the target receiving end of the sideline synchronization signal block.

[0045] In one possible implementation, a sidelink synchronization signal block can be used to indicate a target receiving end, and a sidelink signal can be used to indicate a transmitting end. When the sidelink synchronization signal block is used to indicate the target receiving end, the sidelink primary synchronization signal sequence and the sidelink secondary synchronization signal sequence in the sidelink synchronization signal block can be used to indicate the target receiving end, and the sidelink signal can be used to indicate the transmitting end. In this way, the second device can determine the transmitting end and the target receiving end of the sidelink synchronization signal block.

[0046] In combination with the solution described in any one of the first aspect and the second aspect, the reference signal is a sidelink channel state information reference signal or a sidelink demodulation reference signal.

[0047] In this way, the target receiving end can be indicated by the position of the time-frequency resource corresponding to the sidelink channel state information reference signal; or, the target receiving end can be indicated by the position of the time-frequency resource corresponding to the sidelink demodulation reference signal.

[0048] In a third aspect, a communication device is provided, comprising: a processing unit for determining a side synchronization signal block, which includes a side signal, or is associated with a side signal, and the side signal is used to indicate at least one target receiving end; an interface unit for sending the side synchronization signal block.

[0049] The communication device described in the third aspect can be used to execute the method described in the first aspect and any possible implementation method of the first aspect. For details, please refer to the description of the method described in the first aspect and any possible implementation method of the first aspect, and no further details will be given.

[0050] In a fourth aspect, a communication device is provided, comprising: an interface unit for receiving a side synchronization signal block, which includes a side signal, or is associated with a side signal, and the side signal is used to indicate at least one target receiving end; a processing unit for determining the target receiving end of the side synchronization signal block based on the side signal.

[0051] The communication device described in the fourth aspect can be used to execute the method described in the second aspect and any possible implementation method of the second aspect. For details, please refer to the description of the method described in the second aspect and any possible implementation method of the second aspect, and no further details will be given.

[0052] In a fifth aspect, an embodiment of the present application provides a communication device, comprising a module for executing the method in all possible ways in the first aspect or the second aspect.

[0053] In a sixth aspect, an embodiment of the present application provides a communication device, comprising an interface circuit and a processor, and the communication device is used to execute any possible method in the first aspect or the second aspect.

[0054] The aforementioned interface circuit may also be a communication interface. The aforementioned processor may also be a logic circuit or a processing circuit.

[0055] In a seventh aspect, an embodiment of the present application provides a computer-readable medium that stores a program code for execution by a terminal device, wherein the program code includes instructions for executing any possible method in the first aspect or the second aspect.

[0056] In an eighth aspect, an embodiment of the present application provides a computer program product storing computer-readable instructions, which, when the computer-readable instructions are executed on a computer, enables the computer to execute any possible method of the first aspect or the second aspect.

[0057] In a ninth aspect, an embodiment of the present application provides a communication system, which includes a device having the function of implementing any possible method in the first to second aspects above.

[0058] In a tenth aspect, an embodiment of the present application provides a processor for coupling with a memory, for executing any possible method of the above-mentioned first aspect or second aspect.

[0059] In an eleventh aspect, a communication device is provided, comprising: a processor for executing computer instructions stored in a memory, so that the communication device performs the method as described in any possible manner in the first aspect or the second aspect above.

[0060] In one possible implementation, the above-mentioned communication device further includes a memory.

[0061] In one possible implementation, the communication device further includes a communication interface, which is coupled to the processor, and the communication interface is used to input and / or output information.

[0062] In the twelfth aspect, a chip is provided, which is connected to a memory and is used to read and execute a software program stored in the memory to execute the method described in any possible manner in the first aspect or the second aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] FIG1 is a schematic diagram of a communication system applicable to an embodiment of the present application.

[0064] FIG2 is a schematic diagram of the time domain structure of S-SSB.

[0065] FIG3 is a schematic diagram of beam management.

[0066] FIG4 is a schematic diagram of the interaction flow of the communication method according to an embodiment of the present application.

[0067] FIG5 is a schematic diagram of time-frequency resources corresponding to a reference signal according to an embodiment of the present application.

[0068] FIG6 is a schematic diagram of time-frequency resources corresponding to another reference signal according to an embodiment of the present application.

[0069] FIG7 is a schematic diagram of time-frequency resources of a physical sidelink feedback channel according to an embodiment of the present application.

[0070] FIG8 is a schematic diagram of the correspondence between S-SSB and side signals according to an embodiment of the present application.

[0071] FIG9 is a schematic diagram of another correspondence relationship between S-SSB and side signals according to an embodiment of the present application.

[0072] Figure 10 is a schematic diagram of the correspondence between S-SSB and reporting timing in an embodiment of the present application.

[0073] FIG11 is a schematic block diagram of a communication device according to an embodiment of the present application.

[0074] FIG12 is a schematic block diagram of another communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0075] The technical solution in this application will be described below with reference to the accompanying drawings.

[0076] In order to facilitate understanding of the embodiments of the present application, the following points are first explained.

[0077] 1. Unless otherwise specified, “plurality” means two or more.

[0078] 2. Unless otherwise specified or there is no logical conflict, the terms and / or descriptions between different embodiments of this application are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments based on their internal logical relationships.

[0079] 3. The various numerical numbers involved in this application are only used for the convenience of description and are not used to limit the scope of protection of this application. The size of the serial numbers involved in this application does not mean the order of execution. The order of execution of each process should be determined by its function and internal logic. For example, the terms "first", "second", "third", "fourth" and other various terminology labels (if any) in the specification and claims and drawings of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. Among them, the data used in this way can be interchangeable where appropriate, so that the embodiments described here can be implemented in an order other than what is illustrated or described here.

[0080] At the same time, any embodiment or design described in this application as "exemplary" or "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner to facilitate understanding.

[0081] 4. The terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product or apparatus.

[0082] 5. In this application, "used to indicate" can be understood as "enabling," and "enabling" can include direct enabling and indirect enabling. When describing that certain information is used to enable A, it can include that the information directly enables A or indirectly enables A, and does not necessarily mean that the information contains A.

[0083] The information enabled by the information is called information to be enabled. In the specific implementation process, there are many ways to enable the enabled information, such as but not limited to, directly enabling the information to be enabled, such as the information to be enabled itself or the index of the information to be enabled. The information to be enabled can also be indirectly enabled by enabling other information, wherein there is an association between the other information and the information to be enabled. It is also possible to enable only a part of the information to be enabled, while the other parts of the information to be enabled are known or agreed in advance. For example, it is also possible to enable specific information with the help of the arrangement order of each piece of information agreed in advance (such as specified in the protocol), thereby reducing the enabling overhead to a certain extent. At the same time, it is also possible to identify the common parts of each piece of information and enable them uniformly to reduce the enabling overhead caused by enabling the same information separately.

[0084] 6. In this application, "pre-configuration" may include pre-definition, such as protocol definition. "Pre-definition" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., including each network element). This application does not limit the specific implementation method.

[0085] 7. "Storage" or "saving" as used in this application may refer to storage in one or more memories. The one or more memories may be provided separately or integrated into an encoder or decoder, a processor, or a communication device. The one or more memories may also be provided in part separately and in part integrated into a decoder, processor, or communication device. The type of memory may be any form of storage medium and is not limited thereto.

[0086] 8. The “protocol” referred to in this application may refer to a standard protocol in the field of communications, such as the fourth generation (4G) th generation, 4G) network, fifth generation (5 th generation, 5G) network protocol, NR protocol, 5.5G network protocol, sixth generation (6 th generation, 6G) network protocols and related protocols used in future communication systems, which are not limited in this application.

[0087] 9. The arrows or boxes indicated by dotted lines in the schematic diagrams in the accompanying drawings of this application specification represent optional steps or optional modules.

[0088] 10. Unless otherwise specified, “ / ” indicates that the objects associated with each other are in an “or” relationship. For example, A / B can mean A or B. “And / or” in this application is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

[0089] First, a communication system to which the embodiments of the present application are applicable is described.

[0090] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, universal mobile telecommunication system (UMTS), fifth generation (5G) system or new radio (NR), sixth generation (6G) system and other systems evolved after 5G, non-terrestrial network (NTN) systems such as inter-satellite communication and satellite communication. The satellite communication system includes a satellite base station and a terminal device. The satellite base station provides communication services for the terminal device. The satellite base station can also communicate with the ground base station. The satellite can be used as a base station or as a terminal device. Among them, the satellite can refer to non-ground base stations or non-ground devices such as drones, hot air balloons, low-orbit satellites, medium-orbit satellites, and high-orbit satellites.

[0091] The technical solutions of the embodiments of the present application are applicable to both homogeneous and heterogeneous network scenarios, and there is no restriction on the transmission points. It can be multi-point coordinated transmission between macro base stations, micro base stations, and macro base stations, and is applicable to FDD / TDD systems. The technical solutions of the embodiments of the present application are not only applicable to low-frequency scenarios (sub 6G), but also to high-frequency scenarios (above 6GHz), terahertz, optical communications, etc. The technical solutions of the embodiments of the present application can be applied not only to communications between network devices and terminals, but also to communications between network devices and network devices, between terminals, Internet of Vehicles, Internet of Things, Industrial Internet, etc.

[0092] The technical solutions of the embodiments of the present application can also be applied to scenarios where a terminal is connected to a single base station, wherein the base station to which the terminal is connected and the core network (CN) to which the base station is connected are of the same standard. For example, if the CN is 5G Core, the base station corresponds to a 5G base station, and the 5G base station is directly connected to the 5G Core; or if the CN is 6G Core, the base station is a 6G base station, and the 6G base station is directly connected to the 6G Core. The technical solutions of the embodiments of the present application can also be applied to dual connectivity (DC) scenarios where a terminal is connected to at least two base stations.

[0093] The technical solutions of the embodiments of the present application can also be used in macro and micro scenarios composed of base stations of different forms in the communication network. For example, the base stations can be satellites, aerial balloon stations, drone stations, etc. The technical solutions of the embodiments of the present application are also suitable for scenarios where both wide-coverage base stations and small-coverage base stations exist.

[0094] The technical solutions of the embodiments of the present application can also be applied to 5.5G, 6G and later wireless communication systems, and applicable scenarios include but are not limited to terrestrial cellular communications, NTN, satellite communications, high altitude platform station (HAPS) communications, vehicle-to-everything (V2X), integrated access and backhaul (IAB), and reconfigurable intelligent surface (RIS) communications, indoor commercial use and other scenarios.

[0095] The technical solution of the embodiment of the present application can also be applied to SL communication in which terminal devices communicate directly with each other, that is, the shared channel and the feedback channel are both transmitted and received between terminal devices.

[0096] It should be understood that the technical solutions of the embodiments of the present application can also be applied to indoor commercial scenarios, for example, projecting high-definition images from a mobile phone to a large screen, transmitting VR videos from a mobile phone to VR glasses, etc.

[0097] The terminal device in the embodiment of the present application is a device with wireless transceiver functions, which may refer to user equipment (UE), access terminal, subscriber unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication equipment, on-board unit (OBU), telematics BOX (T-BOX), vehicle, road side unit (RSU), chip, user agent or user device. The terminal device may also be a satellite phone, a cellular phone, a smart phone, a wireless data card, a wireless modem, a machine type communication device, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a customer premises equipment (CPE), a smart point of sale (POS) machine, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a communication device carried on a high-altitude aircraft, a wearable device, a drone, a robot, a terminal in device-to-device (D2D) communication, a terminal in V2X, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in smart grid, a wireless terminal in transportation security ... Safety), wireless terminals in smart cities, wireless terminals in smart homes, or terminal devices in communication networks evolved after 5G, etc., are not limited in the embodiments of the present application.

[0098] The device used to implement the function of the terminal device can be the terminal device; it can also be a device that can support the terminal device to implement the function, 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 the present application, the chip system can be composed of a chip or can include a chip and other discrete devices.

[0099] The network device in the embodiment of the present application is a device with wireless transceiver functions, which is used to communicate with the terminal device. The network device can be a node in the radio access network (RAN), which can also be called a base station, or a RAN node. It can be an evolved Node B (eNB or eNodeB) in LTE; or a base station in a 5G network such as gNodeB (gNB) or a base station in a public land mobile network (PLMN) evolved after 5G, a broadband network service gateway (BNG), an aggregation switch or a 3GPP access device, etc.

[0100] The network devices in the embodiments of the present application may also include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, transmission points (transmitting and receiving points, TRP), transmission points (transmitting points, TP), mobile switching centers, and devices that perform base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, etc., and may also include centralized units (CU) and distributed units (DU) in cloud radio access network (C-RAN) systems, and network devices in NTN communication systems, which are not specifically limited in the embodiments of the present application.

[0101] The device for implementing the function of the network device can be a network device, or 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. The chip system in the embodiment of the present application can be composed of a chip, or it can include a chip and other discrete devices.

[0102] Figure 1 is a schematic diagram of a communication system applicable to an embodiment of the present application. As shown in Figure 1 , the communication system includes a terminal device 110 and a terminal device 120. Terminal devices 110 and 120 can be any of the terminal devices listed above. Terminal devices 110 and 120 can communicate via a PC5 interface, i.e., terminal devices 110 and 120 perform SL communication.

[0103] Optionally, the communication system may further include a network device 130 , and the terminal device (such as the terminal device 110 or the terminal device 120 ) communicates with the network device 130 via an air interface (Uu interface).

[0104] The first device and the second device described below may be the terminal device 110 and the terminal device 120 described above.

[0105] In order to better understand the embodiments of the present application, a brief description of the terms involved in the present application is first given. 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 in the present application.

[0106] 1. Sidelink Synchronization Signal Block (S-SSB)

[0107] The sidelink primary synchronization signals (S-PSS), the sidelink secondary synchronization signals (S-SSS) and the physical sidelink broadcast channel (PSBCH) together constitute the S-SSB.

[0108] For the time domain structure of S-SSB, please refer to Figure 2.

[0109] Figure 2 is a schematic diagram of the time domain structure of an S-SSB. As shown in Figure 2, the time slot length of the S-SSB includes 14 orthogonal frequency division multiplexing (OFDM) symbols. The 0th symbol is used for automatic gain control (AGC) (can also be PSBCH). The 1st symbol and the 2nd symbol are used to transmit the S-PSS sequence. The 3rd symbol and the 4th symbol are used to transmit the S-SSS sequence. The last symbol is a gap (GAP) symbol, which is used for transceiver switching. The remaining symbols are used to transmit the PSBCH.

[0110] In an embodiment of the present application, S-SSB can be used not only for synchronization management between the transmitter and the receiver, but also for beam management between the transmitter and the receiver.

[0111] For information on how to schedule S-SSB, please refer to the existing standard description and will not be repeated here.

[0112] 2. Beam Management

[0113] Beam management is used to establish and maintain an appropriate beam pair between the transmitter and receiver. For example, the transmitter needs to select an appropriate transmit beam, and the receiver needs to select an appropriate receive beam. These two beams form a beam pair to maintain a good wireless connection between the transmitter and receiver.

[0114] For further description of beam management, please refer to Figure 3.

[0115] Figure 3 is a schematic diagram of beam management. As shown in Figure 3, the transmitter sends S-SSB1 (corresponding to beam 1) toward beam 1, S-SSB2 (corresponding to beam 2) toward beam 2, and S-SSB3 (corresponding to beam 3) toward beam 3. The receiver receives S-SSB1, S-SSB2, and S-SSB3, measures the S-SSBs, obtains the S-SSB measurement results, and reports the S-SSB measurement results to the transmitter. Based on the measurement results of the three S-SSBs reported by the receiver, the transmitter determines that the measurement result of S-SSB2 is superior to the measurement results of S-SSB1 and S-SSB3.

[0116] Furthermore, the transmitting end can further divide beam 2 into three sub-beams, namely: beam a1, beam a2 and beam a3, and respectively send sidelink channel state information-reference signal (SL-CSI-RS) a1 (corresponding to beam a1), SL-CSI-RS a2 (corresponding to beam a2) and SL-CSI-RS a3 (corresponding to beam a3). The receiving end receives SL-CSI-RS a1, SL-CSI-RS a2 and SL-CSI-RS a3, measures the SL-CSI-RS, obtains the measurement results of the SL-CSI-RS, and reports the measurement results of the SL-CSI-RS to the transmitting end. The transmitting end determines that the measurement result of SL-CSI-RS a2 is better than the measurement results of SL-CSI-RS a1 and SL-CSI-RS a3 based on the measurement results of the three SL-CSI-RS reported by the receiving end. The transmitting end may determine that the sub-beam corresponding to SL-CSI-RS a2 is the optimal transmitting beam.

[0117] The receiving end can also determine a suitable receiving beam based on the above process.

[0118] However, in the beam management process shown in FIG3 (mainly focusing on the S-SSB scanning process), the overall power consumption of the receiving end will be relatively large.

[0119] In view of this, the present application provides a communication method and a communication device, which can reduce the overall power consumption of the receiving end during the beam management process.

[0120] The communication method and communication device according to the embodiments of the present application are described below with reference to the accompanying drawings.

[0121] For ease of understanding and explanation, the following describes the communication method of the embodiment of the present application by taking the interaction between the first device and the second device as an example, but this should not constitute any limitation on the execution subject of the communication method of the embodiment of the present application. For example, the method performed by the first device can be performed by a module of the first device (such as a circuit, chip, or chip system), and can also be implemented by a logical node, logical module, or software that can realize all or part of the functions of the first device. The method performed by the second device can be performed by a module of the second device (such as a circuit, chip, or chip system), and can also be implemented by a logical node, logical module, or software that can realize all or part of the functions of the second device.

[0122] The above-mentioned apparatus may be a communication device or device, or a component or chip system in a device. For example, the first apparatus is a first device, or a first component, or a first chip; for example, the second apparatus is a second device, or a second component, or a second chip.

[0123] The first device and the second device may both be terminal devices, or the first device and the second device may both be components / modules in the terminal device, or the first device is the terminal device and the second device is the component / module in the terminal device; or the first device is the component / module in the terminal device and the second device is the terminal device, which is not limited to this.

[0124] In addition, the second device may represent one device or multiple devices. For ease of description, the following description takes the second device representing one device as an example.

[0125] FIG4 is a schematic diagram of an interaction flow of a communication method according to an embodiment of the present application. As shown in FIG4 , the method includes:

[0126] S401. The first device determines S-SSB*.

[0127] S-SSB* can be used for beam management between the first device and the second device. S-SSB* is used to represent any S-SSB.

[0128] Optionally, S-SSB* can also be used for synchronization management between the first device and the second device. For the time domain structure of S-SSB*, please refer to Figure 2 and will not be described in detail.

[0129] The first device is a transmitting end, and the second device is a receiving end. In order to enable the second device to determine whether S-SSB* is required for measurement and / or feedback, the present application supports processing S-SSB* so that the second device can determine whether it is the target receiving end of S-SSB*.

[0130] In one possible implementation, S-SSB* includes a side signal* (or, the side signal* is carried within the S-SSB*), which is used to indicate at least one target receiving end, and the target receiving end is the target receiving end of the S-SSB*.

[0131] Another possible implementation is that S-SSB* is associated with a side signal* (or, the side signal* is carried outside the S-SSB*), which is used to indicate at least one target receiving end, and the target receiving end is the target receiving end of the S-SSB*.

[0132] As an example, the target receiving end can be understood as: a receiving end that needs to measure and / or provide feedback on S-SSB*.

[0133] Exemplarily, the second device and the third device both receive S-SSB*, the second device needs to measure and provide feedback on the S-SSB*, and the second device is the target receiving end of the S-SSB*. The third device does not need to measure and / or provide feedback on the S-SSB*, and the third device is not the target receiving end of the S-SSB*.

[0134] As another example, the target receiving end can also be understood as: a receiving end that needs to measure and / or perform measurement on the beam corresponding to S-SSB*.

[0135] Exemplarily, the second device and the third device both receive S-SSB*. The second device needs to determine the measurement result of the beam corresponding to the S-SSB* and needs to send the measurement result to the first device. The second device is the target receiving end of the S-SSB*. The third device does not need to determine the measurement result of the beam corresponding to the S-SSB* and does not need to send the measurement result to the first device. The third device is not the target receiving end of the S-SSB*. Alternatively, the third device needs to determine the measurement result of the beam corresponding to the S-SSB* but does not need to send the measurement result to the first device. The third device is not the target receiving end of the S-SSB*.

[0136] In one possible implementation, the sidelink signal* includes identification information of the target receiving end. The second device can compare the identification information included in the sidelink signal* with the identification information of the second device to determine whether it is the target receiving end of the S-SSB*. In this way, the target receiving end can be indicated.

[0137] In one possible implementation, the sidelink signal* may also be used to indicate at least one receiving end. For example, the S-SSB* includes the sidelink signal*, or the S-SSB* is associated with the sidelink signal*. A device receiving the S-SSB* may determine whether it is a receiving end of the S-SSB* based on the sidelink signal*.

[0138] Exemplarily, the second device and the third device both receive the S-SSB* and determine whether they are receiving ends based on whether the second device is included in the at least one receiving end indicated by the sidelink signal*. For example, the second device may be determined to be a receiving end of the S-SSB* based on the fact that the at least one receiving end indicated by the sidelink signal* includes the second device (for example, identification information of the second device may be indicated by the sidelink signal*). The third device may be determined not to be a receiving end of the S-SSB* based on the fact that the at least one receiving end indicated by the sidelink signal* does not include the third device.

[0139] In this embodiment of the present application, the sidelink signal * is used to indicate at least one target receiving end. The sidelink signal * may include at least one piece of identification information, and the identification information corresponds to the target receiving end. For example, if the sidelink signal * includes the identification information of a second device, the second device determines that it is the target receiving end of the S-SSB * based on the identification information of the second device included in the sidelink signal *. For another example, if the sidelink signal * does not include the identification information of a third device, the third device determines that it is not the target receiving end of the S-SSB * based on the fact that the sidelink signal * does not include the identification information of the third device.

[0140] The above identification information may be an identification of a device, or other information that can be used to distinguish different devices, such as index information, etc., which is not limited to this.

[0141] In one possible implementation, the target receiving end is determined by the first device based on indication information derived from the V2X application layer ID. For example, if the first device has historical communications with the target receiving end (or a link establishment process has occurred between the first device and the target receiving end), the first device can determine the identification information of the target receiving end based on the historical communications and then indicate the target receiving end via the sidelink signal*.

[0142] In another possible implementation, the target receiving end is determined by the first device based on service data. For example, the service data includes identification information of the target receiving end (used to identify the receiving end of the service data). The first device can determine the identification information of the target receiving end based on the service data and indicate the target receiving end via a sidelink signal*.

[0143] In the embodiment of the present application, the side signal* may also be other names such as side information*, and the specific name of the side signal* is not limited. The above-mentioned S-SSB* may also have other names, which are not limited.

[0144] For ease of description, the following description is based on an example in which a sidelink signal* indicates a target receiving end, and the following description is based on an example in which an S-SSB* includes a sidelink signal*.

[0145] In one possible implementation, the sidelink signal* includes an S-PSS sequence and an S-SSS sequence (or the sidelink signal* is an S-PSS sequence and an S-SSS sequence), and the S-PSS sequence and the S-SSS sequence are used to indicate a target receiving end.

[0146] It should be noted that the following description of the S-PSS sequence and the S-SSS sequence is only for example and not for limitation. The combination of the S-PSS sequence and the S-SSS sequence can have more numbers and is not limited to the following examples.

[0147] As shown in Figure 2, illustratively, S-SSB* includes an S-PSS sequence and an S-SSS sequence. There are 2 types of S-PSS sequences, 336 types of S-SSS sequences, and a total of 672 combinations of S-PSS sequences and S-SSS sequences. Each combination of an S-PSS sequence and an S-SSS sequence represents or is associated with an SL-service set identifier (SSID), and an SL-SSID is associated with one target receiving end.

[0148] The combination of the S-PSS sequence and the S-SSS sequence is expressed as:

[0149] in,

[0150] In summary, the target receiving end can be indicated by associating the target receiving end with the SL-SSID.

[0151] When the sidelink signal* includes an S-PSS sequence and an S-SSS sequence (or the sidelink signal* is an S-PSS sequence and an S-SSS sequence), the identification information of the target receiving end can be carried in the S-PSS sequence and the S-SSS sequence. For example, the identification information of different target receiving ends can be represented by different combinations of S-PSS sequences and S-SSS sequences, as shown in Table 1. The content shown in Table 1 is only understood as an example and is not a final limitation.

[0152] Table 1

[0153] As shown in Table 1:

[0154] When the S-PSS sequence is S-PSS sequence 1 and the S-SSS sequence is S-SSS sequence 1, it represents identification information 1 (such as device 1);

[0155] When the S-PSS sequence is S-PSS sequence 2 and the S-SSS sequence is S-SSS sequence 2, it represents identification information 2 (such as device 2);

[0156] When the S-PSS sequence is S-PSS sequence 2 and the S-SSS sequence is S-SSS sequence 3, it represents identification information 3 (such as device 3);

[0157] When the S-PSS sequence is S-PSS sequence 1 and the S-SSS sequence is S-SSS sequence 2, it represents identification information 4 (such as device 4);

[0158] When the S-PSS sequence is S-PSS sequence 1 and the S-SSS sequence is S-SSS sequence 3, it represents identification information 5 (such as device 5).

[0159] As shown in Table 1, different combinations of S-PSS sequences and S-SSS sequences can represent different identification information of target receiving ends. In this way, the identification information of the target receiving end can be carried in the S-PSS sequence and the S-SSS sequence.

[0160] The above-mentioned S-PSS sequence and S-SSS sequence are orthogonal sequences to each other. The orthogonality between the sequences can be used to distinguish different target receiving ends, or the combination of different sequences can be used to characterize different target receiving ends, so that the target receiving ends can be distinguished.

[0161] It should be noted that the above content jointly represents the target receiving end by the S-PSS sequence and the S-SSS sequence, but it can also be represented by one of them, for example, only by the S-PSS sequence or the S-SSS sequence, and there is no limitation on this.

[0162] In one possible implementation, the sidelink signal* includes a reference signal*, and the position of the time-frequency resource corresponding to the reference signal* is used to indicate the target receiving end.

[0163] As shown in Figure 2, the S-SSB* includes eight PSBCHs, and the reference signal* is located within the PSBCHs included in the sidelink signal* (or the sidelink signal* is the PSBCH). This allows the PSBCH design of existing standards to be reused, avoiding major modifications to the current standards.

[0164] For the location of the time-frequency resources corresponding to the reference signal*, please refer to Figures 5 and 6.

[0165] The frequency domain resources in the embodiments of the present application may be any one or more of a resource element (RE), a resource block (RB), or a physical resource block (PRB), etc., without limitation. For ease of description, the following description takes the frequency domain resource as an example of RE.

[0166] The time domain resource in the embodiment of the present application can be any one or more of a time slot, a symbol, and a frame, etc., and is not limited thereto. For ease of description, the following description takes the time domain resource as a symbol as an example.

[0167] Figure 5 is a schematic diagram of a time-frequency resource corresponding to a reference signal in an embodiment of the present application. As shown in Figure 5, symbols 5 to 12 are used to transmit PSBCH, and the reference signal * can be carried in the frequency domain resources corresponding to symbols 5 to 12. For example, the reference signal * is carried on the 5th RE and the 6th RE of the 12 REs corresponding to symbol 9. The position of the time-frequency resource corresponding to the reference signal * can be expressed as: X = 2 (used to indicate the number of REs), k0 = 5 (used to indicate the position of the starting RE), and l0 = 9 (used to indicate the position of the starting symbol).

[0168] In this way, the first device can associate with different target receiving ends through different {k0, l0}.

[0169] When the sidelink signal* includes a reference signal*, the identification information of the target receiving end can be carried in the location of the time-frequency resource corresponding to the reference signal*. For example, different time-frequency resource locations can represent the identification information of different target receiving ends. See Table 2. The content shown in Table 2 is for illustrative purposes only and is not intended to be definitive.

[0170] Table 2

[0171] As shown in Table 2:

[0172] When the position of the time-frequency resource corresponding to the reference signal* is {k0, l0}, it represents identification information 1 (such as device 1);

[0173] When the position of the time-frequency resource corresponding to the reference signal* is {k1, l1}, it represents identification information 2 (such as device 2);

[0174] When the position of the time-frequency resource corresponding to the reference signal* is {k0, l1}, it represents identification information 3 (such as device 3);

[0175] When the position of the time-frequency resource corresponding to the reference signal* is {k0, l2}, it represents identification information 4 (such as device 4);

[0176] When the position of the time-frequency resource corresponding to the reference signal* is {k3, l2}, it represents identification information 5 (such as device 5).

[0177] As shown in Table 2, the positions of the time-frequency resources corresponding to different reference signals* can represent the identification information of different target receiving ends. In this way, the identification information of the target receiving end can be carried in the position of the time-frequency resources corresponding to the reference signal*.

[0178] As an example, the identifier of the target receiving end can be expressed as: ID=k0+k0*l0 (other formulas are also possible and are not limited to this). In this way, the second device can determine the identifier of the target receiving end according to the formula, and further determine whether it is the target receiving end of S-SSB*.

[0179] Figure 6 is a schematic diagram of another embodiment of the present application, illustrating time-frequency resources corresponding to a reference signal. As shown in Figure 6, symbols 5 through 12 are used to transmit the PSBCH, and the reference signal * can be carried in the frequency domain resources corresponding to symbols 5 through 12. The present application also supports carrying identification information of the target receiving end based on a pattern of the position of the time-frequency resources corresponding to the reference signal *.

[0180] In one example, a pattern of the position of the time-frequency resource corresponding to the reference signal * is pattern 1. For example, the reference signal * is carried on the 7th RE and the 8th RE of the 12 REs corresponding to symbol 7 and symbol 8, respectively. The position of the time-frequency resource corresponding to the reference signal * is represented as: {X=2, k0=6, l0=7} and {X=2, k0=6, l0=8}.

[0181] In another example, the pattern of the position of the time-frequency resource corresponding to the reference signal * is pattern 2. For example, the reference signal * is carried on the 5th RE and the 6th RE of the 12 REs corresponding to symbol 9. The position of the time-frequency resource corresponding to the reference signal * can be expressed as: {X=2, k0=5, l0=9}.

[0182] In another example, the pattern of the position of the time-frequency resource corresponding to the reference signal * is pattern 3. For example, the reference signal * is carried on the 7th RE to the 10th RE of the 12 REs corresponding to symbol 12. The position of the time-frequency resource corresponding to the reference signal * can be expressed as: {X=4, k0=6, l0=12}.

[0183] When the sidelink signal* includes a reference signal*, the identification information of the target receiving end can be carried in the pattern of the position of the time-frequency resource corresponding to the reference signal*. For example, the identification information of different target receiving ends can be represented by the pattern of the position of the time-frequency resource corresponding to different reference signals*. See Table 3. The content shown in Table 3 is for illustrative purposes only and is not intended to be definitive.

[0184] Table 3

[0185] As shown in Table 3:

[0186] When the pattern of the position of the time-frequency resource corresponding to the reference signal* is pattern 1, it represents identification information 1 (such as device 1);

[0187] When the pattern of the position of the time-frequency resource corresponding to the reference signal* is pattern 2, it represents identification information 2 (such as device 2);

[0188] When the pattern of the position of the time-frequency resource corresponding to the reference signal* is pattern 3, it represents identification information 3 (such as device 3);

[0189] When the pattern of the position of the time-frequency resource corresponding to the reference signal* is pattern 4, it represents identification information 4 (such as device 4).

[0190] As shown in Table 3, different patterns of the positions of the time-frequency resources corresponding to the reference signal* can represent different identification information of the target receiving end. In this way, the identification information of the target receiving end can be carried in the pattern of the positions of the time-frequency resources corresponding to the reference signal*.

[0191] The embodiment of the present application can predefine or preconfigure multiple patterns and the corresponding relationship between the patterns and identification information. In this way, the second device can determine the identification information of the target receiving end based on the pattern of the position of the time-frequency resource corresponding to the reference signal* and the corresponding relationship.

[0192] Optionally, the embodiment of the present application also supports combining the position of the time-frequency resource corresponding to the reference signal* and the pattern of the position of the time-frequency resource corresponding to the reference signal* to jointly represent the identification information of the target receiving end.

[0193] For example, the position of the time-frequency resource corresponding to the reference signal* is {k0, l0}, and the pattern of the position of the time-frequency resource corresponding to the reference signal* is pattern 1, which represents identification information 1 (such as device 1); the position of the time-frequency resource corresponding to the reference signal* is {k0, l1}, and the pattern of the position of the time-frequency resource corresponding to the reference signal* is pattern 1, which represents identification information 2 (such as device 2), etc. In this way, the number of target receiving ends that can be represented can be achieved.

[0194] In the above description, the reference signal* can be either an SL-CSI-RS or an SL-demodulation reference signal (DMRS). Thus, the target receiving end can be indicated by the position of the time-frequency resource corresponding to the SL-CSI-RS; alternatively, the target receiving end can be indicated by the position of the time-frequency resource corresponding to the SL-DMRS.

[0195] In summary, the positions of time-frequency resources corresponding to different reference signals can represent different target receiving ends and can support differentiation of different target receiving ends.

[0196] In one possible implementation, the sidelink signal* includes a physical sidelink feedback channel (PSFCH) (or the sidelink signal* is PSFCH), and the frequency domain resources corresponding to the PSFCH and the cyclic shift within the frequency domain resources are used to indicate the target receiving end.

[0197] As shown in Figure 3, the S-SSB includes 8 PSBCHs. One of the 8 PSBCHs (or multiple PSBCHs) can be replaced with a PSFCH, and the target receiving end is indicated by the frequency domain resources corresponding to the PSFCH and the cyclic shift within the frequency domain resources. For a description of the frequency domain resources corresponding to the PSFCH and the cyclic shift within the frequency domain resources, see Figure 7.

[0198] Figure 7 is a schematic diagram of a PSFCH time-frequency resource in an embodiment of the present application. As shown in Figure 7, illustratively, the PSFCH is carried on the 12th symbol in the S-SSB* (or, the 8th PSBCH of the S-SSB* is replaced with the PSFCH, the PSFCH symbol corresponds to 11 RBs, each RB has 12 cyclic shifts, and the 11 RBs and the cyclic shifts therein can be used to represent the identities of 132 different target receiving ends.

[0199] For example, the PSFCH supports the generation of 12 distinct PSFCH sequences, each of which is code-division multiplexed and transmitted on a single RB. In a PSFCH symbol, assuming a subchannel consists of 10 RBs and there are three subchannels in the resource pool, the resource pool contains 3 * 10 = 30 RBs that can be used for PSFCH transmission. Therefore, a total of 30 * 12 = 360 different target receivers can be identified.

[0200] In summary, different frequency domain resources and cyclic shifts can represent different target receiving ends and can support differentiation of different target receiving ends.

[0201] It should be noted that the above content jointly represents the target receiving end by frequency domain resources and cyclic shift, but it can also be represented by one of them, for example, only by frequency domain resources or cyclic shift, and this is not limited.

[0202] The different embodiments of the sidelink signal* described above can be combined with each other. For example, the sidelink signal* includes an S-PSS sequence, an S-SSS sequence, and a reference signal*; for example, the sidelink signal* includes an S-PSS sequence, an S-SSS sequence, and a PSFCH; for example, the sidelink signal* includes a reference signal* and a PSFCH, etc. In this way, multiple target receiving ends can be indicated.

[0203] The above description uses the structure of S-SSB* including side signal* and side signal* as an example. The above description also applies to the description of the association between S-SSB* and side signal*. For the latter, the description of side signal* can be referred to above and will not be repeated here.

[0204] S402. The first device sends S-SSB* to the second device.

[0205] Accordingly, the second device receives S-SSB*.

[0206] The first device may broadcast S-SSB* to multiple devices.

[0207] The first device may send S-SSB* to multiple devices in a multicast manner.

[0208] If the S-SSB* includes a side signal*, the second device may determine whether it is a target receiving end of the S-SSB* based on the side signal*.

[0209] If the S-SSB* does not include the side signal*, the S-SSB* is associated with the side signal*, and the first device can also send the side signal* to the second device. The second device can determine whether it is the target receiving end of the S-SSB* based on the side signal*.

[0210] If the S-SSB* does not include a side signal*, the S-SSB* is associated with a side signal*, and the first device does not send the side signal* to the second device, the side signal* associated with the S-SSB* may be pre-configured on the second device, and the side signal* may be indicated in other ways, for example, by carrying one or more bits in the S-SSB* (for example, the structure of the S-SSB* may be modified) to indicate the side signal* associated with the S-SSB* to the second device. In this way, the second device may determine whether it is the target receiving end of the S-SSB* based on the side signal*. Alternatively, the correspondence between the S-SSB and the reference signal may be pre-configured, and when the first device sends multiple S-SSBs to the second device, each S-SSB is associated with a side signal, and the second device determines the side signal corresponding to each S-SSB based on the aforementioned correspondence between the S-SSB and the side signal, and further determines whether it is the target receiving end.

[0211] In one possible implementation, the first device sending the S-SSB* to the second device may include: the first device sending a sidelink signal* and the S-SSB* to the second device.

[0212] The sidelink signal* may be included in the S-SSB* or may be independent of the S-SSB*, without limitation. When the sidelink signal* is included in the S-SSB*, it may be transmitted via the same information, or both may be transmitted simultaneously, which can be understood as the first device transmitting the sidelink signal* and the S-SSB* to the second device.

[0213] When the sidelink signal* is independent of the S-SSB*, it can be sent via two different messages, or the two messages can be sent at different times. This can be understood as the first device separately sending the sidelink signal* and the S-SSB* to the second device. In this way, the second device can determine whether it is the intended recipient of the S-SSB* based on the sidelink signal*.

[0214] In summary, the second device can determine whether it is the target receiving end of S-SSB* based on the sidelink signal*.

[0215] In summary, a first device transmits an S-SSB to a second device, the S-SSB including or associated with a sidelink signal. The sidelink signal indicates at least one target receiving end, which is the receiving end of the S-SSB. The second device can determine whether it is the target receiving end of the S-SSB based on the at least one target receiving end indicated by the sidelink signal. If it is the target receiving end, the second device provides feedback on the S-SSB. If it is not the target receiving end, the second device does not provide feedback on the S-SSB.

[0216] Compared with the second device feeding back all received S-SSBs, the above scheme allows the second device to only feed back the S-SSBs whose target receiving end is the second device, which can effectively reduce the overall power consumption and resource overhead of the receiving end during the beam management process. For example, the receiving end does not need to feed back the measurement results of each side synchronization signal block to the transmitting end.

[0217] In summary, when the transmitter sends an S-SSB to the receiver, it can indicate to the receiver whether it is the target receiver of the S-SSB. The receiver can only provide feedback for the S-SSB whose target receiver is the receiver, which is beneficial to reducing the overall power consumption of the receiver during the beam management process and the resource overhead of the receiver.

[0218] Optionally, the method may further include:

[0219] S403. The second device sends the measurement result of S-SSB* to the first device.

[0220] Accordingly, the first device receives the measurement result of S-SSB*.

[0221] After receiving the S-SSB*, the second device can determine whether the second device is the target receiving end of the S-SSB* based on the sidelink signal*.

[0222] For example, when determined to be the target receiving end of S-SSB*, the second device measures and provides feedback on S-SSB*.

[0223] For example, when it is determined that the second device is not the target receiving end of S-SSB*, the second device may not measure and feedback S-SSB*.

[0224] In summary, when the second device is determined to be the target receiving end of S-SSB*, the second device measures the S-SSB* and sends the measurement results of the S-SSB* to the first device, which is conducive to realizing beam management between the first device and the second device and can support the determination of a suitable beam pair between the first device and the second device.

[0225] In one possible implementation, the second device may determine whether to send the S-SSB* measurement result to the first device based on the following conditions:

[0226] The measurement result of 1-S-SSB* exceeds the threshold;

[0227] The measurement result of 2-S-SSB* is the maximum value;

[0228] The measurement result of 3-S-SSB* is the maximum value and exceeds the threshold value.

[0229] If the S-SSB* measurement result does not exceed the threshold, the second device may not send the S-SSB* measurement result to the first device. If the S-SSB* measurement result is not the maximum value, the second device may not send the S-SSB* measurement result to the first device. If the S-SSB* measurement result is the maximum value but does not exceed the threshold, the second device may not send the S-SSB* measurement result to the first device. In this way, the overall power consumption and resource overhead of the second device can be effectively reduced.

[0230] In addition, the first device can send multiple S-SSBs to the second device, and each S-SSB is associated with a side signal, as shown in Figures 8 and 9.

[0231] Figure 8 is a schematic diagram of the correspondence between an S-SSB and a side signal in an embodiment of the present application. As shown in Figure 8, the first device continuously sends S-SSB0, S-SSB1, S-SSB2, side signal 0, side signal 1, and side signal 2 to the second device. S-SSB0 is associated with side signal 0, S-SSB1 is associated with side signal 1, and S-SSB2 is associated with side signal 2. There is a one-to-one correspondence between the position of the time-frequency resources occupied by the S-SSB and the position of the time domain resources occupied by the side signal. In this way, after the second device receives S-SSB0, S-SSB1, S-SSB2, side signal 0, side signal 1, and side signal 2, the second device can determine that S-SSB0 is associated with side signal 0, S-SSB1 is associated with side signal 1, and S-SSB2 is associated with side signal 2 based on the mapping relationship between S-SSB and the side signal.

[0232] The second device can determine whether the target receiving end of the corresponding S-SSB is the second device based on the side signal, and only measure and feedback the S-SSB whose target receiving end is the second device.

[0233] It should be noted that the correspondence between the position of the time-frequency resources occupied by the above-mentioned S-SSB and the position of the time-frequency resources occupied by the sidelink signal can be predefined, configured, or preconfigured.

[0234] It is understandable that "predefined" can be understood as standard definition, which does not require other device configuration (and cannot be changed by network devices or other terminal devices), and is information recorded / written in advance in the hardware and / or software of the terminal device itself.

[0235] It is understood that "configuration" is divided into network device configuration and terminal device configuration. If it is a network device configuration, it can be changed through the system information block (SIB) or radio resource control (RRC) signaling. If it is a terminal device configuration, it can be changed according to PC5-RRC signaling.

[0236] It is understandable that "pre-configuration" can be understood as information recorded / written in advance in the hardware and / or software of the terminal device itself, which is determined by the equipment manufacturer and can be changed through software or hardware.

[0237] After the second device obtains the measurement results of multiple S-SSBs, it can determine the measurement results of the S-SSBs that need to be fed back according to the above conditions. In this way, the resource overhead of the second device can be effectively reduced.

[0238] Figure 9 is a schematic diagram of the correspondence between another S-SSB and a side signal in an embodiment of the present application. As shown in Figure 9, each S-SSB is associated with two side signals, and each side signal is used to indicate a target receiving end. For example, S-SSB0 is associated with side signal 01 and side signal 02, and side signal 01 and side signal 02 are respectively used to indicate a target receiving end; S-SSB1 is associated with side signal 11 and side signal 12, and side signal 11 and side signal 12 are respectively used to indicate a target receiving end; S-SSB2 is associated with side signal 21 and side signal 22, and side signal 21 and side signal 22 are respectively used to indicate a target receiving end. There is a one-to-one mapping relationship between each S-SSB and the associated side signal. For a specific description, please refer to the description of Figure 8 and will not be repeated here.

[0239] In this way, multiple target receiving ends can be indicated, which can improve transmission efficiency.

[0240] It should be noted that the contents shown in Figures 8 and 9 are described based on the example that the time-frequency resources occupied by S-SSB and the time domain resources occupied by the side signal are different, and the frequency domain resources occupied by S-SSB and the frequency domain resources occupied by the side signal are the same, but it is not limited to the scenario that the time-frequency resources occupied by S-SSB and the time domain resources occupied by the side signal are the same, and the frequency domain resources occupied by S-SSB and the frequency domain resources occupied by the side signal are different.

[0241] Therefore, in an embodiment of the present application, the time-frequency resources occupied by the S-SSB are different from the time-frequency resources occupied by the side signal. The time-frequency resources occupied by the S-SSB are different from the time-frequency resources occupied by the side signal, which may include: the time domain resources occupied by the S-SSB are the same as the time domain resources occupied by the side signal, and the frequency domain resources occupied by the S-SSB are different from the frequency domain resources occupied by the side signal; or, the time domain resources occupied by the S-SSB are different from the time domain resources occupied by the side signal, and the frequency domain resources occupied by the S-SSB are the same as the frequency domain resources occupied by the side signal; or, the time domain resources occupied by the S-SSB are different from the time domain resources occupied by the side signal, and the frequency domain resources occupied by the S-SSB are different from the frequency domain resources occupied by the side signal. When the second device sends the measurement result of the S-SSB* to the first device, the second device can send the measurement result of the S-SSB* at the corresponding report occasion (RO), as shown in Figure 10.

[0242] Figure 10 is a schematic diagram of the correspondence between S-SSB and reporting timing in an embodiment of the present application. As shown in Figure 10, the second device receives S-SSB0, S-SSB1, and S-SSB2 respectively, and the second device sends the measurement results of the S-SSB in the corresponding RO. For example, the measurement result of S-SSB0 is reported in RO0, the measurement result of S-SSB1 is reported in RO1, and the measurement result of S-SSB2 is reported in RO2.

[0243] The mapping relationship between the S-SSB and the RO may be predefined or preconfigured, and is not limited thereto.

[0244] It is understandable that "predefined" can be understood as standard definition, which does not require other device configuration (and cannot be changed by network devices or other terminal devices), and is information recorded / written in advance in the hardware and / or software of the terminal device itself.

[0245] It is understood that "configuration" is divided into network device configuration and terminal device configuration. If it is network device configuration, it can be changed through SIB or RRC signaling. If it is terminal device configuration, it can be changed through PC5-RRC signaling.

[0246] It is understandable that "pre-configuration" can be understood as information recorded / written in advance in the hardware and / or software of the terminal device itself, which is determined by the equipment manufacturer and can be changed through software or hardware.

[0247] The above-mentioned RO can also be a resource used to feedback the measurement results of S-SSB. For example, RO can be a feedback resource or a resource, and the second device sends the corresponding S-SSB measurement results to the first device through the resource.

[0248] After receiving the measurement result of S-SSB* sent by the second device, the first device and the second device need to use the determined beam for further communication within the same time window (the reference signal received power (RSRP) obtained by the second device for measuring S-SSB2 is the highest, and is fed back in RO2. Within the window, the first device uses the beam corresponding to S-SSB2, and the second device uses the beam corresponding to RO2. For example, the first device sends link establishment information to the second device through the beam corresponding to S-SSB2, and the second device receives the link establishment information through the beam corresponding to RO2. Each group of S-SSB and RO corresponds to a time window.

[0249] In scenarios where identification information indicates multiple target receivers, the first device needs to send link establishment information to the corresponding devices using different beams in multiple time windows. If the second device simultaneously provides feedback on the first device's identification and the second device's identification, the first device can send the link establishment information corresponding to the second device within the corresponding time window. Otherwise, the first device needs to send multiple link establishment messages within each time window, each corresponding to a different device.

[0250] Optionally, the second device may also carry the identification information of the first device when sending the S-SSB measurement result to the first device. In this way, the first device can determine that the S-SSB measurement result sent by the second device corresponds to the S-SSB sent by the first device to the second device.

[0251] In the above scheme, S-SSB* can also be used to indicate the identification information of the first device. For example, S-SSB* includes a side signal*, the side signal* is an S-PSS sequence and an S-SSS sequence, and the identification information of the first device is carried on the reference signal*; for example, S-SSB* includes a side signal*, the side signal* is an S-PSS sequence and an S-SSS sequence, and the identification information of the first device is carried on the PSFCH; for example, S-SSB* includes a side signal*, the side signal* is a reference signal*, and the identification information of the first device is carried on the S-PSS sequence and the S-SSS sequence. For example, S-SSB* is associated with the side signal*, and the identification information of the first device can be carried on the S-PSS sequence and the S-SSS sequence, and so on.

[0252] In summary, the above description of the identification information of the target receiving end is also applicable to the identification information of the first device, and will not be repeated here.

[0253] In addition, the determination of the identification information of the first device can also refer to the above description on how to determine the target receiving end, which is not repeated here.

[0254] While the foregoing description uses the example of the sidelink signal * indicating the target receiving end, S-SSB* can also be used to indicate the transmitting end. This allows the second device to determine the transmitting end of the S-SSB*, facilitating feedback of the S-SSB* measurement results to the corresponding device.

[0255] In one possible implementation, S-SSB* can be used to indicate both the sender and the target receiver.

[0256] Specifically, exemplarily, the side signal * in the S-SSB* indicates a transmitter, and the S-PSS sequence and S-SSS sequence in the S-SSB* indicate a target receiver; or the side signal * in the S-SSB* indicates a target receiver, and the S-PSS sequence and S-SSS sequence in the S-SSB* indicate a transmitter. In this way, the second device can determine the transmitter and target receiver of the S-SSB*.

[0257] In one possible implementation, the S-SSB* may be used to indicate a target receiving end, and the sidelink signal* may be used to indicate a transmitting end. When the S-SSB* is used to indicate the target receiving end, the S-PSS sequence and S-SSS sequence in the S-SSB* may be used to indicate the target receiving end, and the sidelink signal may be used to indicate the transmitting end. In this way, the second device may determine the transmitting end and target receiving end of the S-SSB*.

[0258] Finally, the device embodiment of the embodiment of the present application is introduced.

[0259] To implement the various functions of the method provided herein, the first device and the second device may each include hardware structures and / or software modules, and implement the aforementioned functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is implemented in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0260] Figure 11 is a schematic block diagram of a communication device according to an embodiment of the present application. The communication device includes a processing circuit 1110 and a transceiver circuit 1120, which can be interconnected via a bus 1130. The communication device can be a first device or a second device.

[0261] Optionally, the communication device may further include a memory 1140. The memory 1140 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or portable read-only memory (CD-ROM), and is used for related instructions and data.

[0262] The processing circuit 1110 may be one or more central processing units (CPUs). In the case where the processing circuit 1110 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

[0263] The processing circuit 1110 may be a signal processor, a chip, or other integrated circuit that can implement the method of the present application, or a portion of the circuit used for processing functions in the aforementioned processor, chip or integrated circuit.

[0264] The transceiver circuit 1120 may also be a transceiver, or an input / output interface. The input / output interface is used for input or output of signals or data, and may also be referred to as an input / output circuit.

[0265] When the communication device is the first device, illustratively, the processing circuit 1110 is configured to perform the following operations: determine S-SSB*; send S-SSB*, etc.

[0266] When the communication device is the second device, illustratively, the processing circuit 1110 is configured to perform the following operations: receive S-SSB*; determine a target receiving end of the S-SSB* based on the sidelink signal*, etc.

[0267] The above contents are merely exemplary descriptions. When the communication device is the first device or the second device, it will be responsible for executing the methods or steps related to the first device or the second device in the above method embodiments.

[0268] When the communication device is the first device or the second device, the transceiver circuit 1120 may be a transceiver. When the communication device is a chip for the first device or the second device, the transceiver circuit 1120 may be an input / output circuit. The above description is only an exemplary description.

[0269] For specific details, please refer to the contents shown in the above method embodiment.

[0270] The implementation of each operation in FIG11 may also correspond to the corresponding description of the method embodiment shown in FIG4 .

[0271] Figure 12 is a schematic block diagram of another communication device according to an embodiment of the present application. The communication device may be a first device or a second device, and is configured to implement the method according to the above embodiment.

[0272] The communication device includes a transceiver unit 1210 and a processing unit 1220. The transceiver unit 1210 and the processing unit 1220 are described below by way of example.

[0273] The transceiver unit 1210 may include a transmitting unit and a receiving unit. The transmitting unit is configured to execute a transmitting operation of the communication device, and the receiving unit is configured to execute a receiving operation of the communication device. For ease of description, this embodiment of the application combines the transmitting unit and the receiving unit into a single transceiver unit. This is described here as a unified description and will not be repeated later.

[0274] When the communication device is a first device, illustratively, the transceiver unit 1210 is configured to send S-SSB*. The processing unit 1220 is configured to determine S-SSB*. The processing unit 1220 may also be configured to execute the content of the first device involving processing, control, and other steps.

[0275] When the communication device is the second device, illustratively, the transceiver unit 1210 is configured to receive the S-SSB*; the processing unit 1220 is configured to determine the target receiving end of the S-SSB* based on the sidelink signal*. The processing unit 1220 may also be configured to execute steps such as processing and control of the second device.

[0276] When the communication device is the first device or the second device, it will be responsible for executing one or more of the methods or steps related to the first device or the second device in the aforementioned method embodiment.

[0277] Optionally, the communication device further includes a storage unit 1230, which is used to store a program or code for executing the aforementioned method.

[0278] The transceiver unit in FIG12 may correspond to the transceiver circuit in FIG11 , and the processing unit in FIG12 may correspond to the processing circuit in FIG11 .

[0279] The device embodiments shown in FIG. 11 and FIG. 12 are used to implement the content described in FIG. 4 .

[0280] The specific execution steps and methods of the devices shown in Figures 11 and 12 can refer to the contents described in the aforementioned method embodiments.

[0281] The present application also provides a chip, including a processor, configured to retrieve and execute instructions stored in a memory, so that a communication device equipped with the chip executes the methods described in the above examples. The memory may be integrated into the chip or located outside the chip.

[0282] The present application also provides another chip, comprising: an input interface, an output interface, and a processor, wherein the input interface, the output interface, and the processor are connected via an internal connection path, and the processor is configured to execute code in a memory. When the code is executed, the processor is configured to execute the methods in the above examples. Optionally, the chip also includes a memory, which is configured to store computer programs or code.

[0283] The present application also provides a processor for coupling with a memory, and for executing the methods and functions involving a network device or a terminal device in any of the above embodiments.

[0284] In another embodiment of the present application, a computer program product including instructions is provided. When the computer program product is run on a computer, the method of the above embodiment is implemented.

[0285] The present application also provides a computer program. When the computer program is executed in a computer, the method of the aforementioned embodiment is implemented.

[0286] In another embodiment of the present application, a computer-readable storage medium is provided, which stores a computer program. When the computer program is executed by a computer, the method described in the above embodiment is implemented.

[0287] It should be understood that in the embodiments of the present application, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0288] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic random access memory (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0289] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or 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 by wired or wireless (e.g., infrared, wireless, microwave, etc.) means. 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 contains one or more available media sets. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0290] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0291] Those skilled in the art will appreciate that the various exemplary units and algorithmic steps described in conjunction with the embodiments disclosed herein can be implemented using electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented using hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application. Those skilled in the art will clearly understand that, for ease of description and brevity, the specific operating processes of the systems, devices, and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here. In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is merely a logical functional division. In actual implementation, other divisions may be used, such as multiple units or components can be combined or integrated into another system, or some features can be omitted or not implemented. Furthermore, the coupling or direct coupling or communication connection shown or discussed between each other can be through some interface, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0292] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment. In addition, the functional units in the various embodiments of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. If the above functions are implemented in the form of software functional units and sold or used as independent products, they may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the portion that contributes to the prior art, or the portion of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in the various embodiments of the present application. The aforementioned storage medium includes various media that can store program code, such as a USB flash drive, a mobile hard drive, a read-only memory, a random access memory, a magnetic disk, or an optical disk.

[0293] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software 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 beyond the scope of this application.

Claims

1. A communication method, characterized in that: include: Determine a sideline synchronization signal block, wherein the sideline synchronization signal block includes a sideline signal, or the sideline synchronization signal block is associated with the sideline signal, and the sideline signal is used to indicate at least one target receiving end; Send the sideline synchronization signal block.

2. The method according to claim 1, characterized in that The sidewalk signal includes a sidewalk primary synchronization signal sequence and / or a sidewalk secondary synchronization signal sequence, and the sidewalk primary synchronization signal sequence and / or the sidewalk secondary synchronization signal sequence are used to indicate the at least one target receiving end.

3. The method according to claim 1, characterized in that The sidelink signal includes a physical sidelink feedback channel, and the frequency domain resources corresponding to the physical sidelink feedback channel and / or the cyclic shift within the frequency domain resources are used to indicate the at least one target receiving end.

4. The method according to claim 1, characterized in that: The sidelink signal includes a reference signal, and the position of the time-frequency resource corresponding to the reference signal is used to indicate the at least one target receiving end.

5. The method according to claim 4, characterized in that The reference signal is located in a physical sidelink broadcast channel included in the sidelink signal.

6. The method according to claim 4 or 5, characterized in that: The reference signal is a sidelink channel state information reference signal or a sidelink demodulation reference signal.

7. The method according to any one of claims 1 to 6, characterized in that The sidelink signal includes at least one piece of identification information, and the at least one piece of identification information corresponds one-to-one to the at least one target receiving end.

8. The method according to any one of claims 1 to 7, characterized in that The side synchronization signal block is used to indicate the transmitting end.

9. The method according to any one of claims 1 to 8, characterized in that The determining of the side synchronization signal block comprises: Determining at least two sideline synchronization signal blocks, wherein the at least two sideline synchronization signal blocks are associated with at least two sideline signals; There is a one-to-one mapping relationship between the position of the time-frequency resource occupied by each sideline synchronization signal block in the at least two sideline synchronization signal blocks and the position of the time-frequency resource occupied by the corresponding sideline signal in the at least two sideline signals; The sending of the sideline synchronization signal block comprises: The at least two sideline synchronization signal blocks are sent.

10. A communication method, characterized in that: include: receiving a sideline synchronization signal block, wherein the sideline synchronization signal block includes a sideline signal, or the sideline synchronization signal block is associated with the sideline signal, and the sideline signal is used to indicate at least one target receiving end; A target receiving end of the sidelink synchronization signal block is determined according to the sidelink signal.

11. The method according to claim 10, characterized in that The sidewalk signal includes a sidewalk primary synchronization signal sequence and / or a sidewalk secondary synchronization signal sequence, and the sidewalk primary synchronization signal sequence and / or the sidewalk secondary synchronization signal sequence are used to indicate the at least one target receiving end.

12. The method according to claim 10, characterized in that The sidelink signal includes a physical sidelink feedback channel, and the frequency domain resources corresponding to the physical sidelink feedback channel and / or the cyclic shift within the frequency domain resources are used to indicate the at least one target receiving end.

13. The method according to claim 10, characterized in that The sidelink signal includes a reference signal, and the position of the time-frequency resource corresponding to the reference signal is used to indicate the at least one target receiving end.

14. The method according to claim 13, characterized in that The reference signal is located in a physical sidelink broadcast channel included in the sidelink signal.

15. The method according to any one of claims 10 to 14, characterized in that The sidelink signal includes at least one piece of identification information, and the at least one piece of identification information corresponds one-to-one to the at least one target receiving end.

16. The method according to any one of claims 10 to 15, characterized in that The side synchronization signal block is used to indicate the transmitting end.

17. The method according to any one of claims 13 to 16, characterized in that The reference signal is a sidelink channel state information reference signal or a sidelink demodulation reference signal.

18. The method according to any one of claims 10 to 17, characterized in that The receiving side line synchronization signal block includes: receiving at least two sideline synchronization signal blocks, wherein the at least two sideline synchronization signal blocks are associated with at least two sideline signals; The position of the time-frequency resource occupied by each side synchronization signal block in the at least two side synchronization signal blocks is consistent with the position of the time-frequency resource occupied by each side synchronization signal block in the at least two side synchronization signal blocks. There is a one-to-one mapping relationship between the positions of the time-frequency resources occupied by the corresponding sidelink signals in the signal.

19. The method according to any one of claims 10 to 18, characterized in that The method further comprises: Send the measurement result of the sideline synchronization signal block.

20. A communication device, characterized in that: Comprising modules for performing the method as claimed in any one of claims 1 to 9, or claims 10 to 19.

21. A communication device, characterized in that: include: A processor for executing computer instructions stored in the memory, so that the communication device performs the method according to any one of claims 1 to 9, or, So that the communication device performs the method according to any one of claims 10 to 19.

22. The communication device according to claim 21, characterized in that The communication device also includes a memory.

23. The communication device according to claim 21 or 22, characterized in that: The communication device further includes a communication interface, which is coupled to the processor and is used to input and / or output information.

24. A chip, characterized in that: The chip is connected to the memory, The chip is used to read and execute the software program stored in the memory, To implement as claimed in claims 1 to 9, or, A method as claimed in any one of claims 10 to 19.

25. A computer-readable storage medium, characterized in that: The computer readable storage medium stores computer instructions. When the computer instructions are executed on a computer, The method according to any one of claims 1 to 9 is performed, or, The method as claimed in any one of claims 10 to 19 is performed.

26. A computer program product, characterized in that The computer program product includes computer program code, When the computer program code is run on a computer, The method according to any one of claims 1 to 9 is performed, or, The method as claimed in any one of claims 10 to 19 is performed.

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