Communication method and device and storage medium

Abstract

The invention discloses a communication method and device and a storage medium. The first terminal sends first information, the first information indicates the capability of the first terminal to process at least one piece of second information, and the second information comprises the SL-PRS; and the first terminal receives and processes at least one piece of second information based on the capability. And the third terminal perceives at least one piece of second information sent to the first terminal in the first time unit, and does not send the data or the SL-PRS after the first time unit to the first terminal in the first time length. By adopting the scheme of the invention, the first terminal reports the processing capability of the first terminal, so that other terminals can be prevented from sending unnecessary SL-PRS when the first terminal processes the SL-PRS, and resource waste is avoided.

Description

Technical Field

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

[0002] In sidelink (SL) communication, positioning measurement can be achieved by sending a sidelink positioning reference signal (SL-PRS). For user equipment (UE) receiving SL-PRS, it is necessary to cache the SL-PRS first and then process it, such as calculating the arrival time, arrival angle, arrival phase, etc., to obtain the positioning measurement results. The processing capabilities of different UEs may be different. While the UE is processing these cached SL-PRS signals, the UE may not be able to receive other SL-PRS. Therefore, there is currently no corresponding solution to prevent other UEs from sending unnecessary SL-PRS during the period when the receiving UE is processing the SL-PRS, resulting in a waste of resources. Summary of the invention

[0003] The present application provides a communication method, device and storage medium, which can prevent other UEs from sending unnecessary SL-PRS during SL-PRS processing, thereby wasting resources.

[0004] In a first aspect, a communication method is provided, which can be executed by a terminal device, or by a chip or circuit configured in the terminal device, or by a logic module or software that can realize all or part of the functions of the terminal device. This application is not limited to this. The method includes: a first terminal sends a first message, the first message indicates the ability of the first terminal to process at least one second message, and the second message includes SL-PRS; and the first terminal receives and processes the at least one second message based on the ability. In this aspect, the first terminal can avoid other terminals from sending unnecessary SL-PRS during the period when the first terminal processes SL-PRS by reporting its own processing capability, thereby wasting resources.

[0005] In a possible implementation, the first information includes a first time length required for the first terminal to process the at least one second information in the first time unit. In this implementation, the first terminal informs other terminals of the required processing time length by reporting the first time length, thereby avoiding other terminals from sending unnecessary SL-PRS within the first time length, resulting in a waste of resources.

[0006] In another possible implementation, the first terminal receives and processes the at least one second information based on the capability, including: the first terminal receives the at least one second information within the first time unit, and processes the at least one second information within the first time length. In this implementation, the first time length may include the first time unit or may be after the first time unit. For the at least one second information received within the first time unit, the first terminal needs to process the at least one second information within the first time length to improve the accuracy of information processing.

[0007] In another possible implementation, the method further includes: the first terminal does not receive or process the SL-PRS or data after the first time unit within the first time length. In this implementation, the first terminal has received at least one second information within the first time unit and needs to process the at least one second information within the first time length. Therefore, the first terminal does not receive or process the SL-PRS or data after the first time unit within the first time length to improve the accuracy of information processing.

[0008] In the second aspect, a communication method is provided, which can be executed by a terminal device or a network device, or by a chip or circuit configured in the terminal device or the network device, or by a logic module or software that can realize all or part of the functions of the terminal device or the network device. This application is not limited to this, and the following description is taken as an example of a terminal device. The method includes: a second terminal receives a first message from a first terminal, the first message indicates the ability of the first terminal to process at least one second message, and the second message includes SL-PRS; and the second terminal sends part or all of the second information in the at least one second message to the first terminal based on the ability of the first terminal to process the at least one second message. In this aspect, the second terminal obtains the ability reported by the first terminal, and sends part or all of the second information in the at least one second message to the first terminal based on the ability of the first terminal, so that the first terminal can process the part or all of the second information, and can avoid waste of resources.

[0009] In a possible implementation, the first information includes a first time length required for the first terminal to process the at least one second information in the first time unit. In this implementation, by learning the processing time length required for the first terminal to process the at least one second information in the first time unit, the second terminal will not send unnecessary SL-PRS within the first time length, resulting in a waste of resources.

[0010] In another possible implementation, the second terminal sends part or all of the at least one second information to the first terminal based on the capability of the first terminal to process the at least one second information, including: the second terminal sends part or all of the at least one second information to the first terminal within the first time unit. In this implementation, the first time length may include the first time unit or may be after the first time unit.

[0011] In another possible implementation, the method further includes: the second terminal does not send the SL-PRS or data after the first time unit to the first terminal within the first time length. In this implementation, the second terminal has sent part or all of the at least one second information to the first terminal within the first time unit, and the first terminal needs to process the at least one second information within the first time length. Therefore, the second terminal does not send the SL-PRS or data after the first time unit to the first terminal within the first time length to avoid wasting resources.

[0012] In a third aspect, a communication method is provided, which can be executed by a terminal device or a network device, or by a chip or circuit configured in the terminal device or the network device, or by a logic module or software that can realize all or part of the functions of the terminal device or the network device. This application is not limited to this, and the following is an explanation using a terminal device as an example. The method includes: a third terminal receives first information from a first terminal, the first information indicates the ability of the first terminal to process at least one second information, the first information includes the first time length required for the first terminal to process the at least one second information in the first time unit, and the second information includes SL-PRS; and the third terminal perceives the at least one second information sent to the first terminal in the first time unit, and does not send data or SL-PRS after the first time unit to the first terminal in the first time length. In this aspect, the third terminal learns the ability of the first terminal and perceives that other terminals send at least one second information to the first terminal in the first time unit. Therefore, the third terminal does not send data or SL-PRS after the first time unit to the first terminal in the first time length, thereby avoiding resource waste.

[0013] In a fourth aspect, a communication method is provided, which can be executed by a terminal device, or by a chip or circuit configured in the terminal device, or by a logic module or software that can realize all or part of the functions of the terminal device. This application is not limited to this. The method includes: a first terminal sends a first message, the first message indicates the ability of the first terminal to process at least one second message, the first message includes at least one of the following: the number of processes supported by the first terminal, the processing time required for the first terminal to process the at least one second message in each process within the first time unit, and the second information includes SL-PRS; and the first terminal receives and processes the at least one second message based on the ability. In this aspect, the first terminal informs other terminals of its own ability to process information by reporting the number of processes supported by itself, which can improve information processing efficiency while avoiding resource waste.

[0014] In a possible implementation, the first terminal supports at least two processes, wherein the processing duration corresponding to the first process is the first time length, and the processing duration corresponding to the second process is the second time length; the first terminal receives and processes the at least one second information based on the capability, including: the first terminal receives and processes the at least one second information within a second time unit, the time length of the second time unit is the time length of the first time unit; and the first terminal receives and processes the at least one second information within a third time unit, the time length of the third time unit is the time length of the first time unit; wherein the third time unit is located after the second time unit and within the first time length. In this implementation, the first terminal can process the received information in parallel in at least two processes, thereby improving the efficiency of information processing.

[0015] In another possible implementation, the method further includes: the first terminal does not receive or process the SL-PRS or data after the third time unit within the first time length. In this implementation, the first terminal has been processing the received information in parallel using the maximum process supported by itself, and the first terminal can no longer receive other SL-PRS or data. Therefore, the first terminal does not receive or process the SL-PRS or data after the third time unit within the first time length to improve the accuracy of information processing.

[0016] In a fifth aspect, a communication method is provided, which can be executed by a terminal device or a network device, or by a chip or circuit configured in the terminal device or the network device, or by a logic module or software that can realize all or part of the functions of the terminal device or the network device. This application is not limited to this, and the following is an explanation using a terminal device as an example. The method includes: a second terminal receives first information from a first terminal, the first information indicates the ability of the first terminal to process at least one second information, the first information includes at least one of the following: the number of processes supported by the first terminal, the processing time required for the first terminal to process the at least one second information in each process within the first time unit, and the second information includes SL-PRS; and the second terminal sends part or all of the at least one second information to the first terminal based on the ability of the first terminal to process at least one second information. In this aspect, the second terminal learns the number of processes supported by the first terminal, so as to learn the ability of the first terminal to process information, and based on the ability, sends part or all of the at least one second information to the first terminal, thereby improving transmission efficiency.

[0017] In a possible implementation, the first terminal supports at least two processes, wherein the processing duration corresponding to the first process is a first time length, and the processing duration corresponding to the second process is a second time length; the second terminal sends part or all of the at least one second information to the first terminal based on the ability of the first terminal to process the at least one second information, including: the second terminal sends part or all of the at least one second information to the first terminal in a first time unit.

[0018] In a sixth aspect, a communication method is provided, which can be executed by a terminal device or a network device, or can also be executed by a chip or circuit configured in the terminal device or the network device, or can also be executed by a logic module or software that can realize all or part of the functions of the terminal device or the network device. This application is not limited to this, and the following is an example of a terminal device. The method includes: a third terminal receives a first message from a first terminal, the first message indicates the ability of the first terminal to process at least one second message, the first terminal supports at least two processes, and the first message includes at least one of the following: the number of processes supported by the first terminal, a first time length, and a second time length, wherein the first time length is the processing time required for the first terminal to process the at least one second message in the second time unit in the first process, and the second time length is the processing time required for the first terminal to process the at least one second message in the third time unit in the second process, and the second information includes SL-PRS; the third terminal perceives that the first terminal has received at least one second message in the second time unit; and the third terminal sends at least one second message to the first terminal in the third time unit, wherein the third time unit is located after the second time unit and is located within the first time length. In this aspect, the third terminal learns the number of processes supported by the first terminal, and perceives that the first terminal has received at least one second message within the second time unit. The first terminal needs to process at least one second message received within the second time unit in a partial process. The third terminal can also send at least one second message to the first terminal within the third time unit, thereby improving transmission efficiency.

[0019] In a possible implementation, the method further includes: the third terminal does not send data or SL-PRS to the first terminal after the third time unit and within the first time length. In this implementation, the third terminal perceives that the first terminal has been processing the received information in parallel using the maximum process supported by itself, and the first terminal can no longer receive other SL-PRS or data. Therefore, the third terminal does not send data or SL-PRS to the first terminal after the third time unit and within the first time length to avoid wasting resources.

[0020] In a seventh aspect, a communication device is provided for implementing the communication method in the first aspect or any one of the implementations of the first aspect. The device may be a first terminal, or a module (such as a processor, a chip, or a chip system) applied to the first terminal, or a logical node, a logical module, or software that can implement all or part of the functions of the first terminal.

[0021] In one possible implementation, the device includes: a transceiver unit and a processing unit; wherein the transceiver unit is used to send first information, the first information indicating the ability of the first terminal to process at least one second information, the second information including SL-PRS; the transceiver unit is also used to receive the at least one second information based on the capability, and the processing unit is used to process the at least one second information based on the capability.

[0022] Optionally, the first information includes a first time length required for the first terminal to process the at least one second information within a first time unit.

[0023] Optionally, the transceiver unit is used to receive the at least one second information within the first time unit, and the processing unit is used to process the at least one second information within the first time length.

[0024] Optionally, the transceiver unit is further used to not receive the SL-PRS or data after the first time unit within the first time length, or the processing unit is further used to not process the SL-PRS or data after the first time unit within the first time length.

[0025] In an eighth aspect, a communication device is provided for implementing the communication method in the second aspect or any one of the implementations of the second aspect. The device may be a second terminal, or a module (such as a processor, a chip, or a chip system) applied to the second terminal, or a logical node, a logical module, or software that can implement all or part of the functions of the second terminal.

[0026] In one possible implementation, the device includes: a transceiver unit, and may also include a processing unit; wherein the transceiver unit is used to receive first information from a first terminal, the first information indicating the ability of the first terminal to process at least one second information, and the second information includes SL-PRS; and the transceiver unit is also used to send part or all of the at least one second information to the first terminal based on the ability of the first terminal to process the at least one second information.

[0027] Optionally, the first information includes a first time length required for the first terminal to process the at least one second information within a first time unit.

[0028] Optionally, the transceiver unit is used to send part or all of the at least one second information to the first terminal within the first time unit.

[0029] Optionally, the transceiver unit is further configured to not send the SL-PRS or data after the first time unit to the first terminal within the first time length.

[0030] In a ninth aspect, a communication device is provided for implementing the communication method in the third aspect or any one of the implementations of the third aspect. The device may be a third terminal, or a module (such as a processor, a chip, or a chip system) applied to a third terminal, or a logical node, a logical module, or software that can implement all or part of the functions of the third terminal.

[0031] In one possible implementation, the device includes: a transceiver unit, and may also include a processing unit; wherein the transceiver unit is used to receive first information from a first terminal, the first information indicating the ability of the first terminal to process at least one second information, the first information including a first time length required for the first terminal to process the at least one second information within a first time unit, and the second information including SL-PRS; and the transceiver unit is also used to sense the at least one second information sent to the first terminal within the first time unit, and not send data or SL-PRS after the first time unit to the first terminal within the first time length.

[0032] In a tenth aspect, a communication device is provided for implementing the communication method in the fourth aspect or any one of the implementations of the fourth aspect. The device may be a first terminal, or a module (such as a processor, a chip, or a chip system) applied to the first terminal, or a logical node, a logical module, or software that can implement all or part of the functions of the first terminal.

[0033] In one possible implementation, the device includes: a transceiver unit and a processing unit; wherein the transceiver unit is used to send first information, the first information indicates the ability of the first terminal to process at least one second information, the first information includes at least one of the following: the number of processes supported by the first terminal, the processing time required for the first terminal to process the at least one second information within a first time unit in each process, and the second information includes SL-PRS; the transceiver unit is also used to receive the at least one second information based on the capability; and the processing unit is used to process the at least one second information based on the capability.

[0034] Optionally, the first terminal supports at least two processes, wherein the processing duration corresponding to the first process is a first time length, and the processing duration corresponding to the second process is a second time length; the transceiver unit is also used to receive the at least one second information in the second time unit, and the processing unit is used to process the at least one second information in the second time unit, and the time length of the second time unit is the time length of the first time unit; and the transceiver unit is also used to receive the at least one second information in a third time unit, and the processing unit is also used to process the at least one second information in the third time unit, and the time length of the third time unit is the time length of the first time unit; wherein the third time unit is located after the second time unit and within the first time length.

[0035] Optionally, the transceiver unit is further used to not receive the SL-PRS or data after the third time unit within the first time length, or the processing unit is further used to not process the SL-PRS or data after the third time unit.

[0036] In the eleventh aspect, a communication device is provided for implementing the communication method in the fifth aspect or any one of the implementations of the fifth aspect. The device may be a second terminal, or a module (such as a processor, a chip, or a chip system) applied to the second terminal, or a logical node, a logical module, or software that can implement all or part of the functions of the second terminal.

[0037] In one possible implementation, the device includes: a transceiver unit, and may also include a processing unit; wherein the transceiver unit is used to receive first information from a first terminal, the first information indicates the ability of the first terminal to process at least one second information, the first information includes at least one of the following: the number of processes supported by the first terminal, the processing time required for the first terminal to process the at least one second information within a first time unit in each process, and the second information includes SL-PRS; and the transceiver unit is also used to send part or all of the at least one second information to the first terminal based on the ability of the first terminal to process at least one second information.

[0038] Optionally, the first terminal supports at least two processes, wherein the processing duration corresponding to the first process is a first time length, and the processing duration corresponding to the second process is a second time length; the transceiver unit is also used to send part or all of the at least one second information to the first terminal in the first time unit.

[0039] In the twelfth aspect, a communication device is provided for implementing the communication method in the sixth aspect or any one of the implementations of the sixth aspect. The device may be a third terminal, or a module (such as a processor, a chip, or a chip system) applied to a third terminal, or a logical node, a logical module, or software that can implement all or part of the functions of the first terminal.

[0040] In one possible implementation, the device includes: a transceiver unit and a processing unit; wherein the transceiver unit is used to receive first information from a first terminal, the first information indicates the ability of the first terminal to process at least one second information, the first terminal supports at least two processes, and the first information includes at least one of the following: the number of processes supported by the first terminal, a first time length, and a second time length, wherein the first time length is the processing time required for the first terminal to process the at least one second information in the second time unit in the first process, and the second time length is the processing time required for the first terminal to process the at least one second information in the third time unit in the second process, and the second information includes SL-PRS; the processing unit is used to sense that the first terminal has received at least one second information in the second time unit; and the transceiver unit is also used to send at least one second information to the first terminal in the third time unit, wherein the third time unit is located after the second time unit and within the first time length.

[0041] Optionally, the transceiver unit is further configured to not send data or SL-PRS to the first terminal after the third time unit and within the first time length.

[0042] In another possible implementation, the communication device in any one of the seventh to twelfth aspects includes a processor; the processor is configured to implement the device to perform the corresponding functions in the above communication method. Optionally, it also includes a memory, which is used to couple with the processor and store the necessary programs (instructions) and / or data of the device. Optionally, the communication device may also include a communication interface for implementing communication between the device and other network elements. Optionally, the memory may be located inside the communication device or outside the communication device.

[0043] In another possible implementation, the communication device in any one of the seventh to twelfth aspects includes a processor and a transceiver, the processor is coupled to the transceiver, and the processor is used to execute a computer program or instruction to control the transceiver to receive and send information; when the processor executes the computer program or instruction, the processor is also used to implement the above method through a logic circuit or execute code instructions. The transceiver may be a transceiver, a transceiver circuit or an input-output interface, which is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device. When the communication device is a chip, the transceiver is a transceiver circuit or an input-output interface.

[0044] When the communication device in any of the seventh to twelfth aspects is a chip, the sending unit may be an output unit, such as an output circuit or a communication interface; the receiving unit may be an input unit, such as an input circuit or a communication interface. When the communication device is a terminal, the sending unit may be a transmitter or a transmitter; the receiving unit may be a receiver or a receiver.

[0045] In combination with any one of the first to twelfth aspects, in another possible implementation, the first time unit includes any one of the following: a time slot, a subframe, an orthogonal frequency division multiplexing symbol. In this implementation, the first time unit can be a time slot, a subframe or an orthogonal frequency division multiplexing symbol.

[0046] In combination with any one of the first to twelfth aspects, in another possible implementation, the unit of the first time length includes any one of the following: a time slot, a subframe, an orthogonal frequency division multiplexing symbol.

[0047] In combination with any one of the first aspect to the twelfth aspect, in another possible implementation, the first information further includes at least one of the following: the maximum bandwidth of the SL-PRS supported by the first terminal, and the maximum amount of second information that the first terminal can process within the first time unit. In this implementation, the maximum bandwidth of the SL-PRS supported by the first terminal affects the processing capability of the first terminal, and the maximum amount of second information that the first terminal can process within the first time unit can also represent the processing capability of the first terminal. Therefore, the first terminal can also report the above-mentioned first information so that the second information sent by other terminals does not exceed the processing capability of the first terminal, thereby avoiding waste of resources.

[0048] In combination with any one of the first to twelfth aspects, in another possible implementation, the second information also includes at least one physical sidelink control channel (PSCCH), and the at least one PSCCH is used to indicate whether there is at least one SL-PRS in the first time unit. In this implementation, in the sidelink positioning technology, the SL-PRS is associated with a PSCCH. Therefore, the first terminal receives at least one second information in the first time unit, and the second information includes PSCCH and SL-PRS. The first terminal needs to cache PSCCH and SL-PRS, and parse PSCCH first to understand whether there is SL-PRS in the first time unit before measuring SL-PRS. Therefore, in the sidelink positioning technology, the processing capability reported by the terminal also includes the ability to process PSCCH, which can report information more accurately and avoid other terminals sending unnecessary SL-PRS or data during the processing of PSCCH and SL-PRS by the first terminal, resulting in a waste of resources.

[0049] In combination with any one of the first to twelfth aspects, in another possible implementation, the first information is carried in any one of the following messages: a sidelink long term evolution positioning protocol (SLPP) message, a radio resource control (RRC) message, or a long term evolution positioning protocol (LPP) message.

[0050] In the thirteenth aspect, a communication system is provided, comprising a communication device as described in the seventh aspect or any one of the seventh aspects, a communication device as described in the eighth aspect or any one of the eighth aspects, and a communication device as described in the ninth aspect or any one of the ninth aspects.

[0051] In the fourteenth aspect, a communication system is provided, comprising a communication device as described in any one of the tenth aspect or the tenth aspect, a communication device as described in any one of the eleventh aspect or the eleventh aspect, and a communication device as described in any one of the twelfth aspect or the twelfth aspect.

[0052] In a fifteenth aspect, a computer-readable storage medium is provided, in which a computer program or instruction is stored. When the computer program or instruction is executed, the method described in any one of the above aspects or any one of the aspects is implemented.

[0053] In a sixteenth aspect, a computer program product comprising instructions is provided. When the instructions are executed on a communication device, the communication device executes the method described in any one of the above aspects or any one of the aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A schematic diagram of the architecture of a communication system used in an embodiment of the present application;

[0055] Figure 2a A schematic diagram illustrating that each UE is within the coverage of the network;

[0056] Figure 2b A schematic diagram illustrating that some UEs are within the coverage of the network;

[0057] Figure 2c A schematic diagram illustrating that all UEs are out of network coverage;

[0058] Figure 3 A schematic diagram of trilateral positioning based on a sidelink provided in an embodiment of the present application;

[0059] Figure 4 A flow chart of a communication method provided in an embodiment of the present application;

[0060] Figure 5 A flowchart of another communication method provided in an embodiment of the present application;

[0061] Figure 6 A schematic diagram of the processing capability of a first terminal exemplified in an embodiment of the present application;

[0062] Figure 7 A flowchart of another communication method provided in an embodiment of the present application;

[0063] Figure 8 A flowchart of another communication method provided in an embodiment of the present application;

[0064] Fig. 9 A schematic diagram of a terminal processing SL-PRS under multiple processes in an example of an embodiment of the present application;

[0065] Fig.10 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0066] Fig.11 A schematic diagram of the structure of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0067] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0068] The at least one (item) involved in the present application as follows indicates one (item) or more (items). More than one (item) refers to two (items) or more than two (items). "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. In addition, it should be understood that although the terms first, second, etc. may be used to describe each object in the present application, these objects should not be limited to these terms. These terms are only used to distinguish each object from each other.

[0069] The terms "including", "having" and any variations thereof mentioned in the following description of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally includes other steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. It should be noted that in the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any method or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other methods or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete manner.

[0070] The technology provided by the present application can be applied to various communication systems. For example, the communication system can be a fourth generation (4 th generation, 4G) communication systems (such as long term evolution (LTE) systems), fifth generation (5 th The 5G communication system may also be referred to as a new radio (NR) system.

[0071] It should be noted that the terms "system" and "network" in the embodiments of the present application can be used interchangeably.

[0072] A network element in a communication system can send a signal to another network element or receive a signal from another network element. The signal may include information, signaling, or data, etc. The network element may also be replaced by an entity, a network entity, a device, a terminal device, a communication module, a node, a communication node, etc. The network element is used as an example for description in this application. For example, a communication system may include at least one terminal device and at least one access network device. The access network device may send a downlink signal to the terminal device, and / or the terminal device may send an uplink signal to the access network device. In addition, it can be understood that if a plurality of terminal devices are included in the communication system, the plurality of terminal devices may also send signals to each other, that is, the signal sending network element and the signal receiving network element may both be terminal devices.

[0073] Figure 1 FIG. 1 is a schematic diagram of the architecture of a communication system used in an embodiment of the present application. Figure 1 As shown, the communication system 1000 includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The wireless access network 100 may include at least one wireless access network device (such as Figure 1 110a and 110b), and may further include at least one terminal (such as Figure 1 120a-120j in the figure). The terminal is connected to the wireless access network device by wireless means, and the wireless access network device is connected to the core network by wireless or wired means. The core network device and the wireless access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the wireless access network device can be integrated on the same physical device, or part of the functions of the core network device and part of the functions of the wireless access network device can be integrated on one physical device. Terminals and wireless access network devices can be connected to each other by wired or wireless means. Figure 1 This is just a schematic diagram. Both the core network equipment and the wireless access network equipment can be called network equipment. The communication system can also include other network equipment, such as wireless relay equipment and wireless backhaul equipment. Figure 1 Not drawn in.

[0074] The radio access network (RAN) device may be a device with wireless transceiver functions, or may be a chip or chip system provided in the device, located in the access network (AN) of the communication system, to provide access services for the terminal. The radio access network device may be a next-generation mobile communication system, such as a 6G access network device, such as a 6G base station, or in the next-generation mobile communication system, the network device may also have other naming methods, which are all included in the protection scope of the embodiments of the present application, and the present application does not make any limitation on this. Alternatively, the network device may also include 5G, such as a gNB in ​​a new radio (NR) system, or one or a group of antenna panels (including multiple antenna panels) of a base station in 5G, or a network node constituting a gNB, a transmission point (TRP or transmission point, TP) or a transmission measurement function (TMF), such as a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), an RSU with base station function, or a wired access gateway, or a 5G core network element. Alternatively, the network device may also include: an access point (AP) in a wireless fidelity (WiFi) system, a wireless relay node, a wireless backhaul node, various forms of macro base stations (such as Figure 1 110a in ), micro base station or indoor station (also called small station) (such as Figure 1 110b in), relay stations, access points, wearable devices, vehicle-mounted devices, etc.

[0075] Among them, CU and DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH). It can be understood that the network device can be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, CU can be divided into a network device in the access network RAN, and CU can also be divided into a network device in the core network CN, which is not limited here.

[0076] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, CU, CU-CP, CU-UP, DU and RU are described as examples in this application. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0077] In the embodiments of the present application, the form of the network device is not limited. The device for realizing the function of the network device can be the network device; or it can be a device that can support the network device to realize the function, such as a chip system. The device can be installed in the network device or used in combination with the network device.

[0078] For ease of description, the following description takes a base station as an example of a wireless access network device.

[0079] The terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely used in various scenarios, for example, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, a road side unit (RSU), a vehicle-mounted module, a vehicle-mounted module, a chip or a whole vehicle, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.

[0080] Base stations and terminals can be fixed or movable. Base stations and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on aircraft, balloons, and artificial satellites in the air. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0081] The roles of the base station and the terminal can be relative, for example, Figure 1 The helicopter or drone 120i in the figure can be configured as a mobile base station. For the terminal 120j that accesses the wireless access network 100 through 120i, the terminal 120i is a base station; but for the base station 110a, 120i is a terminal, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between base stations. In this case, relative to 110a, 120i is also a base station. Therefore, base stations and terminals can be collectively referred to as communication devices. Figure 1 110a and 110b in the figure may be referred to as communication devices having base station functions. Figure 1 120a-120j in the figure can be called communication devices with terminal functions.

[0082] Base stations and terminals, base stations and base stations, and terminals and terminals can communicate through authorized spectrum, unauthorized spectrum, or both; they can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0083] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem including the base station function. The control subsystem including the base station function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or by a device including the terminal function.

[0084] In this application, the base station sends a downlink signal or downlink information to the terminal, and the downlink information is carried on the downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on the uplink channel. In order to communicate with the base station, the terminal establishes a wireless connection with the cell controlled by the base station. The cell with which the terminal has established a wireless connection is called the service cell of the terminal. When the terminal communicates with the service cell, it will also be interfered by signals from neighboring cells.

[0085] In addition, due to its mobility, the UE may be sometimes within the network coverage and sometimes outside the network coverage. The at least two UEs performing sidelink communication may both be within the network coverage, partially within the network coverage, or completely outside the network coverage. Figure 2a-2c The following is a schematic diagram illustrating the network coverage of the UE.

[0086] like Figure 2a As shown, each UE can be in the network coverage of the network device (such as the gNB in ​​the figure), that is, each UE can communicate with the network device based on the Uu port. Sidelink communication can be performed between each UE based on the PC5 port.

[0087] Among them, the Uu port, namely the cellular network communication interface, mainly refers to the communication interface between UE and network equipment, including uplink and downlink, and is characterized by achieving reliable communication over long distances and a larger range.

[0088] PC5 port, i.e. direct communication interface, mainly refers to the communication interface between terminals, i.e. the short-distance direct communication interface between vehicles, people and road infrastructure. Its characteristics are: low latency, high capacity and high reliability communication through direct connection, broadcast and network scheduling.

[0089] like Figure 2b The figure shows that some UEs are within the network coverage of the network device (partial coverage). Partial coverage means that one UE can communicate with the gNB through the Uu port, while another UE can only communicate with the UE within the coverage of the network device through the PC5 port.

[0090] like Figure 2c As shown, it is a schematic diagram that all UEs are out of network coverage (out-of-coverage) of the network equipment. Being out of coverage means that both UEs cannot communicate with the gNB and can only communicate with each other through the PC5 port.

[0091] The present application relates to sidelink positioning. Sidelink positioning can be a positioning technology under a newly defined sidelink condition, or it can be a positioning function added on the basis of existing sidelink communication. In the sidelink scenario, the specific positioning method is not essentially different from the Uu port positioning method. The only difference is that the reference signals used by the sender and receiver are different. In sidelink positioning, the positioning function is implemented through SL-PRS. And a resource pool dedicated to positioning (resource pool for positioning) is also defined for sending and receiving SL-PRS. In addition, SL-PRS can also be sent together with data in a shared resource pool. The resource pool here can be understood as a set of (pre-) configured time-frequency resources, and it is a public configuration, that is, all UEs that use the resource pool for data transmission and reception use the same configuration information.

[0092] The present application can support multiple positioning technologies such as downlink-time difference of arrival (DL-TDOA), downlink-angle of departure (DL-AOD), uplink-time difference of arrival (UL-TDOA), uplink-angle of arrival (UL-AOA), and multi-round trip time (multi-RTT). Among them, DL-TDOA, UL-TDOA and multi-RTT algorithms are positioning technologies based on arrival time, that is, the receiving end is required to measure the arrival time of the signal sent by the sending end, and then convert it into the distance information between the two, and finally obtain the position of the target to be located. DL-AOD and UL-AOA are positioning technologies based on angles, that is, the receiving end measures the arrival angle of the reference signal sent by the sending end, and then infers the position of the receiving end based on the angle information between the receiving end and multiple senders with known positions.

[0093] like Figure 3 As shown in FIG. 1 , a schematic diagram of a three-side positioning based on a sidelink provided by an embodiment of the present application can estimate the position of the target by calculating the intersection of the hyperbola. First, it is assumed that the positions of UE2, UE3, and UE4 are known. Here, the coordinates of the i-th UE are defined as (x i ,y i ), the coordinates of the target to be located are (x UE ,y UE ), and take UE4 as the reference UE, assuming that the arrival time of SL-PRS of UE2 and UE3 measured by UE1 is t i , then the arrival time difference between any UE and the reference UE is Δt i1 According to the definition of the hyperbola (the distance from two fixed points is constant), the target is located on the hyperbola with two UEs as foci, and the following set of equations can be listed:

[0094]

[0095]

[0096] In the above two equations, c is the speed of light, because there are only two unknowns (x UE ,y UE), the position coordinates of the target UE (ie, UE1) can be obtained by combining equations (1) and (2). In fact, due to the existence of measurement errors, the above equations generally have no closed-form solutions. In engineering, classical optimization algorithms such as the least squares algorithm or the particle swarm filter algorithm are used to estimate the optimal solution of the above equations.

[0097] It can be seen that UE1 (receiving UE) obtains time information or angle information by receiving and measuring SL-PRS, and then calculates the distance and position.

[0098] For the receiving UE, the UE needs to cache the SL-PRS first, and then process it, such as calculating the arrival time, arrival angle, arrival phase, etc. However, the processing capabilities of different UEs may be different. Some UEs have strong processing capabilities, so the required processing time is short, such as 2 milliseconds; while some UEs have weak processing capabilities and may require 10 milliseconds. While the UE is processing these cached SL-PRS signals, the UE may not be able to receive other SL-PRS. The present application aims to solve the problem of avoiding other UEs from sending unnecessary SL-PRS during the SL-PRS processing of the receiving UE, resulting in a waste of resources.

[0099] In Uu port positioning technology, the downlink-positioning reference signal (DL-PRS) is sent periodically, and the receiving UE can determine when the base station will send the DL-PRS. In the sidelink positioning technology, the SL-PRS is not sent periodically, but the sending UE needs to sense the resources first, and then send it on unoccupied resources, that is, the receiving UE cannot determine the SL-PRS sending time of the sending UE or anchor node, nor does it know in which time slot it will receive the SL-PRS sent by other UEs; or the SL-PRS sending time cannot be configured in advance for both the sender and the receiver.

[0100] To this end, the present application provides a communication solution, whereby the first terminal can avoid other terminals from sending unnecessary SL-PRS during the period when the first terminal is processing SL-PRS, thereby wasting resources, by reporting its own processing capability.

[0101] like Figure 4 FIG. 1 is a flow chart of a communication method provided in an embodiment of the present application. Exemplarily, the method may include the following steps:

[0102] S401. A first terminal sends first information. Correspondingly, a second terminal and a third terminal receive the first information.

[0103] In this embodiment, the first terminal can perform sidelink communication with the second terminal and the third terminal.

[0104] The second terminal and the third terminal can receive the positioning request of the first terminal or the location management function (LMF), send the SL-PRS to the first terminal, and locate the first terminal. However, after the first terminal receives the SL-PRS, it needs to cache the SL-PRS and then process it, such as calculating the arrival time, arrival angle, arrival phase, etc., to obtain the positioning measurement result. The second terminal sends part or all of at least one SL-PRS to the first terminal in a certain time unit (such as a certain time slot), or the second terminal and other terminals send at least one SL-PRS to the first terminal in the same time unit. The first terminal receives the at least one SL-PRS in the time unit, and it takes a certain amount of time to process the at least one SL-PRS. The first terminal does not want to receive at least one SL-PRS sent by other terminals (such as the third terminal) within this time. Therefore, the first terminal sends the first information to the second terminal and the third terminal. The first information indicates the ability of the first terminal to process at least one second information. The second information includes the SL-PRS.

[0105] Exemplarily, a plurality of processing capabilities may be preconfigured or predefined in each terminal, each processing capability has a corresponding index, and the first information may indicate one of the indexes.

[0106] The first terminal sends the first information, and the second terminal and the third terminal can all receive the first information. This embodiment is described by taking the first terminal, the second terminal and the third terminal as examples. In fact, the method can involve more terminals, and this application does not limit this. Other terminals can also receive the first information sent by the first terminal.

[0107] Exemplarily, in an SL positioning scenario, the first terminal is configured to perform SL positioning with the second terminal, the third terminal, etc., then the first terminal can send the first information to the second terminal and the third terminal respectively, or broadcast the first information within a certain range with a certain transmission power, and the second terminal and the third terminal can both receive the first information.

[0108] In addition, the first terminal may also send the first information to a positioning server, a serving base station, a roadside service unit (road service unit, RSU), etc.

[0109] Exemplarily, the first information may be carried in any one of the following messages: SLPP message, RRC message, LPP message.

[0110] Exemplarily, the first information may be called Common SL PRS Processing Capability across all resource pools, or other field names, which are not limited in this application. Among them, all resource pools include shared resource pools and positioning-specific resource pools.

[0111] S402. The second terminal sends part or all of the at least one second information to the first terminal based on the capability of the first terminal to process the at least one second information.

[0112] After receiving the first information sent by the first terminal, the second terminal sends part or all of the at least one second information to the first terminal based on the capability of the first terminal to process the at least one second information.

[0113] Exemplarily, if the second terminal senses that the first terminal has not received at least one second information in the first time unit, part or all of the at least one second information can be sent to the first terminal in the first time unit. The first time unit can be a time slot, a subframe, or an orthogonal frequency division multiplexing symbol.

[0114] It is understandable that the second terminal may send one second message to the first terminal, or may send multiple second messages to the first terminal. In the first time unit, other terminals may also send at least one second message to the first terminal.

[0115] S403. The first terminal receives and processes at least one second information based on the above capability.

[0116] When the first terminal receives at least one second information at this moment, it processes the at least one second information based on its own capabilities, including caching the at least one second information and performing positioning measurements on at least one SL-PRS.

[0117] S404. The third terminal senses at least one second information sent to the first terminal within the first time unit, and does not send data or SL-PRS after the first time unit to the first terminal within the first time length.

[0118] Since in the sidelink communication, each terminal uses resources in the same resource pool for communication, and each terminal will perform resource perception before using the channel, therefore, other terminals (such as the second terminal) send at least one second message to the first terminal, and the third terminal can perceive the at least one second message sent to the first terminal within the first time unit. The third terminal has learned the ability of the first terminal to process at least one second message, and the first terminal needs to process at least one second message received in the first time unit within the first time length. Therefore, the third terminal does not send data or SL-PRS after the first time unit to the first terminal within the first time length to avoid wasting resources.

[0119] According to a communication method provided in an embodiment of the present application, the first terminal can avoid other terminals from sending unnecessary SL-PRS during the period when the first terminal processes SL-PRS, thereby wasting resources, by reporting its own processing capability.

[0120] The ability of the first terminal to process at least one second information may be represented in a variety of ways. Figure 5 The illustrated embodiment exemplarily describes this capability:

[0121] like Figure 5 FIG. 1 is a flow chart of another communication method provided in an embodiment of the present application. Exemplarily, the method may include the following steps:

[0122] S501. A first terminal sends first information. Correspondingly, a second terminal and a third terminal receive the first information.

[0123] In this embodiment, the first terminal can perform sidelink communication with the second terminal and the third terminal.

[0124] The second terminal and the third terminal can receive the positioning request of the first terminal or LMF, send SL-PRS to the first terminal, and locate the first terminal. However, after the first terminal receives the SL-PRS, it needs to cache the SL-PRS and then process it, such as calculating the arrival time, arrival angle, arrival phase, etc., to obtain the positioning measurement result. The second terminal sends part or all of at least one SL-PRS to the first terminal in the first time unit, or the second terminal and other terminals send at least one SL-PRS to the first terminal in the same first time unit. The first terminal receives the at least one SL-PRS in the first time unit, and it takes a certain amount of time to process the at least one SL-PRS. The first terminal does not want to receive at least one SL-PRS sent by other terminals (such as the third terminal) within this time. Therefore, the first terminal sends the first information to the second terminal and the third terminal. The first information includes the first time length required for the first terminal to process at least one second information in the first time unit. The second information includes the SL-PRS.

[0125] The unit of the first time unit includes any one of the following: time slot, subframe, orthogonal frequency division multiplexing symbol.

[0126] The first time unit includes any one of the following: a time slot, a subframe, or an orthogonal frequency division multiplexing symbol. For example, the first time unit may be a time slot, a subframe, or an orthogonal frequency division multiplexing symbol; or a fixed time unit, such as X time slots, X subframes, or X orthogonal frequency division multiplexing symbols.

[0127] For example, candidate values ​​of the first time length required for the first terminal to process at least one second information in a time slot may be {0, 1, 2, 3, ..., 31} and the like.

[0128] The first time length may be the first time unit; or may be located after the first time unit, that is, not including the first time unit.

[0129] In addition, in the side link positioning technology, each SL-PRS is associated with a PSCCH. Therefore, the first terminal receives at least one second information in the first time unit. The second information may also include at least one PSCCH, and the at least one PSCCH is used to indicate whether there is at least one SL-PRS in the first time unit.

[0130] Furthermore, the first information may also include at least one of the following: a maximum bandwidth of the SL-PRS supported by the first terminal, and a maximum amount of second information that the first terminal can process within the first time unit.

[0131] Among them, the maximum bandwidth of the SL-PRS supported by the first terminal, that is, the maximum bandwidth of a single SL-PRS allowed by the first terminal. The maximum bandwidth of the SL-PRS supported by the first terminal affects the processing capability of the first terminal. The larger the maximum bandwidth of the SL-PRS supported by the first terminal, the longer the processing time required by the first terminal. Exemplarily, for the frequency band of frequency range (FR) 1, the value range of the maximum bandwidth can be {5, 10, 20, 40, 50, 80, 100}; for the frequency band of FR2, the value range of the maximum bandwidth can be {50, 100, 200, 400}. Among them, the subcarrier spacing of FR1 and FR2 is different.

[0132] Among them, the maximum number of second information that the first terminal can process within the first time unit also affects the processing capacity of the first terminal. The greater the maximum number of second information that the first terminal can process within the first time unit, the longer the processing time required by the first terminal. Exemplarily, for the FR1 frequency band, the candidate values ​​of the maximum number can be {1,2,4,6,8,12,16,24}; for the FR2 frequency band, the candidate values ​​of the maximum number can be {1,2,4,6,8,12,16,24}. The at least one second information can be sent by the terminal using some resources in all resource pools such as a shared resource pool and a positioning-specific resource pool.

[0133] The first terminal sends the first information, and the second terminal and the third terminal can all receive the first information. This embodiment is described by taking the first terminal, the second terminal and the third terminal as examples. In fact, the method can involve more terminals, and this application does not limit this. Other terminals can also receive the first information sent by the first terminal.

[0134] Exemplarily, the first information may be carried in any one of the following messages: SLPP message, RRC message, LPP message.

[0135] S502. The second terminal sends part or all of the at least one second information to the first terminal in the first time unit.

[0136] After receiving the first information sent by the first terminal, the second terminal sends part or all of the at least one second information to the first terminal based on the capability of the first terminal to process the at least one second information.

[0137] Exemplarily, if the second terminal senses that the first terminal has not received at least one second information in the first time unit, part or all of the at least one second information may be sent to the first terminal in the first time unit.

[0138] It is understandable that the second terminal may send one second message to the first terminal, or may send multiple second messages to the first terminal. In the first time unit, other terminals may also send at least one second message to the first terminal.

[0139] S503. The first terminal receives at least one second information within a first time unit, and processes at least one second information within a first time length.

[0140] Exemplarily, the first terminal receives at least one S-PRS and a PSCCH corresponding to each S-PRS in a first time unit. The first terminal needs to cache at least one PSCCH and at least one SL-PRS within a first time length, and parse at least one PSCCH first to understand whether there is at least one SL-PRS in the first time unit, and then measure at least one SL-PRS within the first time length to obtain a positioning measurement result.

[0141] like Figure 6 As shown, it is a schematic diagram of the processing capability of the first terminal of the example embodiment of the present application. The first terminal receives at least one PSCCH and at least one SL-PRS in time slot 1, and needs to cache and process the at least one PSCCH and at least one SL-PRS within 5ms.

[0142] S504. The second terminal does not send the SL-PRS or data after the first time unit to the first terminal within the first time length.

[0143] The second terminal has sent part or all of at least one second information to the first terminal in the first time unit, and the second terminal has learned that the first terminal needs to process at least one second information received in the first time unit within the first time length. Therefore, the second terminal does not send the SL-PRS or data after the first time unit to the first terminal within the first time length to avoid wasting resources.

[0144] S505. The third terminal senses at least one second information sent to the first terminal within the first time unit, and does not send data or SL-PRS after the first time unit to the first terminal within the first time length.

[0145] Since in the sidelink communication, each terminal uses resources in the same resource pool for communication, and each terminal will perform resource perception before using the channel, therefore, other terminals (such as the second terminal) send at least one second information to the first terminal, and the third terminal can perceive the at least one second information sent to the first terminal within the first time unit. The third terminal has learned that the first terminal needs to process at least one second information received in the first time unit within the first time length, therefore, the third terminal does not send data or SL-PRS after the first time unit to the first terminal within the first time length, so as to avoid wasting resources.

[0146] S506. The first terminal does not receive or process the SL-PRS or data after the first time unit within the first time length.

[0147] like Figure 6 As shown, if the first terminal receives at least one PSCCH and at least one SL-PRS in time slot 1, the first terminal will not receive at least one PSCCH and at least one SL-PRS within 5 ms including time slot 1 (of course, 5 ms may not include time slot 1), for example, it will not receive at least one PSCCH and at least one SL-PRS sent in time slot 4.

[0148] After 5 ms, the first terminal can continue to receive at least one PSCCH and at least one SL-PRS in, for example, time slot n, and process at least one PSCCH and at least one SL-PRS received in time slot n within another 5 ms.

[0149] According to a communication method provided in an embodiment of the present application, the first terminal can avoid other terminals from sending unnecessary SL-PRS during the period when the first terminal processes SL-PRS, thereby wasting resources, by reporting its own processing capability.

[0150] The above embodiment is described by taking the example that the first terminal can only receive and process at least one second information received within one first time unit at a time. In fact, as the processing capability of the terminal increases, the first terminal can support multiple parallel processes and can simultaneously process at least one second information received within multiple first time units in multiple processes. The following is a detailed description:

[0151] like Figure 7 FIG. 1 is a flow chart of another communication method provided in an embodiment of the present application. Exemplarily, the method may include the following steps:

[0152] S701. A first terminal sends first information. Correspondingly, a second terminal and a third terminal receive the first information.

[0153] and Figure 4 , Figure 5 What is different from the illustrated embodiment is that, in this embodiment, the first terminal can support multiple parallel processes and can simultaneously process at least one second information received within multiple first time units in the multiple processes.

[0154] The first terminal sends a first message. The first message indicates the capability of the first terminal to process at least one second message. The first message includes at least one of the following: the number of processes supported by the first terminal, and the processing time required for the first terminal to process at least one second message in a first time unit in each process. Exemplarily, the processing time corresponding to different processes may be the same or different.

[0155] In addition, the first terminal may also send the first information to a positioning server, a serving base station, an RSU, etc.

[0156] Exemplarily, the first information may be carried in any one of the following messages: SLPP message, RRC message, LPP message.

[0157] For further implementation of this step, please refer to Figure 4 In the embodiment shown, step S401 or Figure 5 Step S501 in the illustrated embodiment will not be described in detail here.

[0158] S702. The second terminal sends part or all of the at least one second information to the first terminal based on the capability of the first terminal to process the at least one second information.

[0159] The second terminal learns the number of processes supported by the first terminal, and thus can learn the information processing capability of the first terminal. Based on the capability, the second terminal sends part or all of at least one second information to the first terminal, thereby improving transmission efficiency.

[0160] Exemplarily, if the second terminal perceives that the first terminal has not received at least one second information in the second time unit, part or all of the at least one second information may be sent to the first terminal in the second time unit. The time length of the second time unit may be the time length of the first time unit. For example, the second time unit may be a time slot, a subframe, or an orthogonal frequency division multiplexing symbol.

[0161] It is understandable that the second terminal may send one second message to the first terminal, or may send multiple second messages to the first terminal. In the second time unit, other terminals may also send at least one second message to the first terminal.

[0162] S703. The third terminal senses that the first terminal receives at least one second information within the second time unit, and the third terminal sends at least one second information to the first terminal within the third time unit.

[0163] The third terminal learns the number of processes supported by the first terminal, and perceives that the first terminal has received at least one second message within the second time unit. The first terminal needs to process at least one second message received within the second time unit in some processes. The third terminal may also send at least one second message to the first terminal within the third time unit, so that the first terminal can process at least one second message received in the third time unit in other remaining processes, thereby improving transmission efficiency and information processing efficiency.

[0164] Exemplarily, the third time unit is located after the second time unit and is located within the first time length. Generally, the first terminal processes at least one second information within a first time length in parallel through multiple processes.

[0165] S704. The first terminal receives and processes at least one second information based on the capability.

[0166] The first terminal receives and processes at least one second information in a second time unit in one process based on its own parallel processing capability, and receives and processes at least one second information in a third time unit in another process.

[0167] Furthermore, the first terminal may also support more than two processes, and may process at least one second information within a certain time unit in each process.

[0168] The first terminal can process the received information in parallel in at least two processes, thereby improving information processing efficiency.

[0169] According to a communication method provided in an embodiment of the present application, a first terminal informs other terminals of its own information processing capabilities by reporting the number of processes supported by itself, thereby avoiding waste of resources and improving information processing efficiency.

[0170] The following is an exemplary description using the example of the first terminal supporting two processes:

[0171] like Figure 8 FIG. 1 is a flow chart of another communication method provided in an embodiment of the present application. Exemplarily, the method may include the following steps:

[0172] S801. A first terminal sends first information. Correspondingly, a second terminal and a third terminal receive the first information.

[0173] The first information indicates the ability of the first terminal to process at least one second information. Specifically, the first information includes at least one of the following: the number of processes supported by the first terminal, the first time length, and the second time length. The first terminal supports at least two processes. The first time length is the processing time required for the first terminal to process at least one second information in the second time unit in the first process, and the second time length is the processing time required for the first terminal to process at least one second information in the third time unit in the second process. Exemplarily, the first time length and the second time length may be the same or different.

[0174] like Fig. 9 As shown, it is a schematic diagram of terminal processing SL-PRS under multiple processes in an example of an embodiment of the present application. In the figure, the first terminal supports process 1 and process 2. The processing time corresponding to process 1 (i.e., the first time length) is 5ms, and the processing time corresponding to process 2 (i.e., the second time length) is also 5ms.

[0175] For further implementation of this step, please refer to Figure 4 Step S401 in the illustrated embodiment, or Figure 5 Step S501 in the illustrated embodiment, or Figure 7 Step S701 in the illustrated embodiment will not be described in detail here.

[0176] S802. The second terminal sends part or all of the at least one second information to the first terminal in the second time unit.

[0177] The second terminal learns the number of processes supported by the first terminal, and thus can learn the information processing capability of the first terminal. Based on the capability, the second terminal sends part or all of at least one second information to the first terminal, thereby improving transmission efficiency.

[0178] Exemplarily, if the second terminal perceives that the first terminal has not received at least one second information in the second time unit, part or all of the at least one second information may be sent to the first terminal in the second time unit. The time length of the second time unit may be the time length of the first time unit. For example, the second time unit may be a time slot, a subframe, or an orthogonal frequency division multiplexing symbol.

[0179] It is understandable that the second terminal may send one second message to the first terminal, or may send multiple second messages to the first terminal. In the second time unit, other terminals may also send at least one second message to the first terminal.

[0180] S803. The third terminal senses that the first terminal receives at least one second information within the second time unit; and the third terminal sends at least one second information to the first terminal within the third time unit.

[0181] The third terminal learns the number of processes supported by the first terminal, and perceives that the first terminal has received at least one second message within the second time unit. The first terminal needs to process at least one second message received within the second time unit in the first process. The third terminal may also send at least one second message to the first terminal within the third time unit, so that the first terminal may process at least one second message received in the third time unit in the second process, thereby improving transmission efficiency and information processing efficiency.

[0182] Exemplarily, the third time unit is located after the second time unit and is located within the first time length. Generally, the first terminal processes at least one second information within a first time length in parallel through multiple processes.

[0183] Still refer to Fig. 9 , the third terminal perceives that the second terminal has sent at least one PSCCH and at least one SL-PRS to the first terminal in time slot 1, and the first terminal needs to process at least one PSCCH and at least one SL-PRS in time slot 1 in one of the processes (for example, process 1). However, the third terminal knows that the first terminal supports two processes, so the third terminal can send at least one PSCCH and at least one SL-PRS to the first terminal in any time slot from time slot 2 to time slot 5 (time slot 4 is shown in the example in the figure).

[0184] S804. The first terminal receives and processes at least one second information within the second time unit; and the first terminal receives and processes at least one second information within the third time unit.

[0185] Still refer to Fig. 9 After the first terminal receives at least one PSCCH and at least one SL-PRS in time slot 1, it can process the at least one PSCCH and at least one SL-PRS in process 1; and after receiving at least one PSCCH and at least one SL-PRS in time slot 4, it can process the at least one PSCCH and at least one SL-PRS in process 2.

[0186] In this example, the duration for process 1 to process at least one PSCCH and at least one SL-PRS in time slot 1 is 5 ms, and the duration for process 2 to process at least one PSCCH and at least one SL-PRS in time slot 4 is also 5 ms.

[0187] S805. The third terminal does not send data or SL-PRS to the first terminal after the third time unit and within the first time length.

[0188] The third terminal perceives that the first terminal is already processing the received information in parallel using the maximum process supported by itself, and the first terminal can no longer receive other SL-PRS or data. Therefore, the third terminal does not send data or SL-PRS to the first terminal after the third time unit and within the first time length to avoid wasting resources.

[0189] In addition, the second terminal also knows that the first terminal is already processing the received information in parallel using the maximum process supported by itself, and the first terminal can no longer receive other SL-PRS or data. Therefore, the second terminal does not send data or SL-PRS to the first terminal after the third time unit and within the first time length to avoid wasting resources.

[0190] S806. The first terminal does not receive or process the SL-PRS or data after the third time unit within the first time length.

[0191] The first terminal is already processing the received information in parallel using the maximum process supported by the first terminal. The first terminal can no longer receive other SL-PRS or data. Therefore, the first terminal does not receive or process the SL-PRS or data after the third time unit within the first time length to improve the accuracy of information processing.

[0192] In addition, each process processes at least one second information within a first time unit, and the first terminal does not process at least one second information within other time units in the process. Fig. 9 As shown, the first terminal receives at least one PSSCH and at least one SL-PRS in time slot 4. The first terminal does not process at least one PSSCH and at least one SL-PRS of time slot 4 in process 1, but processes at least one PSSCH and at least one SL-PRS of time slot 4 in process 2.

[0193] Each process independently processes at least one second message received in a certain time unit. Fig. 9 As shown, process 1 processes at least one PSSCH and at least one SL-PRS of time slot 1 within 5ms. Even if process 2 has not yet processed at least one PSSCH and at least one SL-PRS of time slot 4 within 5ms, the first terminal can still continue to process at least one PSSCH and at least one SL-PRS received in time slot n in process 1.

[0194] According to a communication method provided in an embodiment of the present application, a first terminal informs other terminals of its own information processing capabilities by reporting the number of processes supported by itself, thereby avoiding waste of resources and improving information processing efficiency.

[0195] It is understandable that, in order to implement the functions in the above embodiments, the above terminals include hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and method steps of each example described in the embodiments disclosed in this application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0196] Fig.10 and Fig.11 The following is a schematic diagram of the structure of possible communication devices provided in the embodiments of the present application. These communication devices can be used to implement the functions of each terminal in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiments of the present application, the communication device can be as follows: Figure 1 One of the terminals 120a-120j shown may also be a module (such as a chip) applied to a terminal.

[0197] like Fig.10 As shown, the communication device 1000 includes a processing unit 1010 and a transceiver unit 1020. The communication device 1000 is used to implement the above Figure 4 , Figure 5 , Figure 7 , Figure 8 Functions of the first terminal, the second terminal or the third terminal in the method embodiment shown in .

[0198] When the communication device 1000 is used to implement Figure 4 In the method embodiment shown in the figure, the function of the first terminal is: the processing unit 1010 is used to execute the following Figure 4 Step S403 in the embodiment shown; and the transceiver unit 1020 is used to perform the following steps: Figure 4 In the embodiment shown, the first terminal performs operations in steps S401 and S402. Alternatively, when the communication device 1000 is used to implement Figure 5 In the method embodiment shown in the figure, the function of the first terminal is: the processing unit 1010 is used to execute the following Figure 5 Steps S503 and S506 in the embodiment shown; and the transceiver unit 1020 is used to perform the following steps: Figure 5 In the embodiment shown, the first terminal performs operations in steps S501 and S502. Alternatively, when the communication device 1000 is used to implement Figure 7 In the method embodiment shown in the figure, the function of the first terminal is: the processing unit 1010 is used to execute the following Figure 7 Step S704 in the embodiment shown; and the transceiver unit 1020 is used to perform the following steps: Figure 7In the embodiment shown, the first terminal performs operations in steps S701-S703. Alternatively, when the communication device 1000 is used to implement Figure 8 In the method embodiment shown in the figure, the function of the first terminal is: the processing unit 1010 is used to execute the following Figure 8 Steps S804 and S806 in the embodiment shown; and the transceiver unit 1020 is used to perform the following steps: Figure 4 The operations performed by the first terminal in steps S801-S803 in the illustrated embodiment.

[0199] When the communication device 1000 is used to implement Figure 4 In the method embodiment shown in FIG. 1 , the function of the second terminal is as follows: the transceiver unit 1020 is used to perform the following steps: Figure 4 The operations performed by the second terminal in steps S401 and S402 in the illustrated embodiment. Alternatively, when the communication device 1000 is used to implement Figure 5 In the method embodiment shown in FIG. 1 , the function of the second terminal is as follows: the processing unit 1010 is configured to execute Figure 5 Step S504 in the embodiment shown; and the transceiver unit 1020 is used to perform the following steps: Figure 5 The operations performed by the second terminal in steps S501 and S502 in the illustrated embodiment. Alternatively, when the communication device 1000 is used to implement Figure 7 In the method embodiment shown in FIG. 1 , the function of the second terminal is as follows: the transceiver unit 1020 is used to perform the following steps: Figure 7 The operations performed by the second terminal in steps S701 and S702 in the illustrated embodiment. Alternatively, when the communication device 1000 is used to implement Figure 8 In the method embodiment shown in FIG. 1 , the function of the second terminal is as follows: the transceiver unit 1020 is used to perform the following steps: Figure 8 The operations performed by the second terminal in steps S801 and S802 in the illustrated embodiment.

[0200] When the communication device 1000 is used to implement Figure 4 In the method embodiment shown in FIG. 1 , the function of the third terminal is as follows: the processing unit 1010 is used to execute Figure 4 Step S404 in the embodiment shown; and the transceiver unit 1020 is used to perform the following steps: Figure 4 The operation performed by the third terminal in step S401 in the embodiment shown. Alternatively, when the communication device 1000 is used to implement Figure 5 In the method embodiment shown in FIG. 1 , the function of the third terminal is as follows: the processing unit 1010 is used to execute Figure 5 Step S505 in the embodiment shown; and the transceiver unit 1020 is used to perform the following steps: Figure 5 The operation performed by the third terminal in step S501 in the embodiment shown. Alternatively, when the communication device 1000 is used to implement Figure 7In the method embodiment shown in FIG. 1 , the function of the third terminal is as follows: the transceiver unit 1020 is used to perform the following steps: Figure 7 The operations performed by the third terminal in steps S701 and S703 in the illustrated embodiment. Alternatively, when the communication device 1000 is used to implement Figure 8 In the method embodiment shown in FIG. 1 , the function of the third terminal is as follows: the processing unit 1010 is used to execute Figure 8 Step S805 in the embodiment shown; and the transceiver unit 1020 is used to perform the following steps: Figure 8 The operations performed by the third terminal in steps S801 and S803 in the illustrated embodiment.

[0201] For a more detailed description of the processing unit 1010 and the transceiver unit 1020, please refer to Figure 4 , Figure 5 , Figure 7 , Figure 8 The relevant description in the method embodiment shown is directly obtained and will not be repeated here.

[0202] like Fig.11 As shown, the communication device 1100 includes a processor 1110 and an interface circuit 1120. The processor 1110 and the interface circuit 1120 are coupled to each other. It is understood that the interface circuit 1120 can be a transceiver or an input-output interface. Optionally, the communication device 1100 may also include a memory 1130 for storing instructions executed by the processor 1110 or storing input data required by the processor 1110 to execute instructions or storing data generated after the processor 1110 executes instructions.

[0203] When the communication device 1100 is used to implement Figure 5 When the method is shown, the processor 1110 is used to implement the functions of the above-mentioned processing unit 1010, and the interface circuit 1120 is used to implement the functions of the above-mentioned transceiver unit 1020.

[0204] When the above communication device is a chip applied to the first terminal, the chip in the first terminal implements the function of the first terminal in the above method embodiment. The chip in the first terminal receives information from other modules (such as a radio frequency module or an antenna) in the first terminal, and the information is sent to the first terminal by the second terminal or the third terminal; or the chip in the first terminal sends information to other modules (such as a radio frequency module or an antenna) in the first terminal, and the information is sent to the second terminal or the third terminal by the first terminal.

[0205] When the above communication device is a chip applied to the second terminal, the chip in the second terminal implements the function of the second terminal in the above method embodiment. The chip in the second terminal receives information from other modules (such as a radio frequency module or an antenna) in the second terminal, and the information is sent by the first terminal to the second terminal; or the chip in the second terminal sends information to other modules (such as a radio frequency module or an antenna) in the second terminal, and the information is sent by the second terminal to the first terminal.

[0206] When the above communication device is a chip applied to a third terminal, the chip in the third terminal implements the function of the third terminal in the above method embodiment. The chip in the third terminal receives information from other modules (such as a radio frequency module or an antenna) in the third terminal, and the information is sent by the first terminal to the third terminal; or the chip in the third terminal sends information to other modules (such as a radio frequency module or an antenna) in the third terminal, and the information is sent by the third terminal to the first terminal.

[0207] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0208] An embodiment of the present application also provides a communication system, which includes the above-mentioned first terminal, second terminal and third terminal.

[0209] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed, the method in the above method embodiment is implemented.

[0210] An embodiment of the present application also provides a computer program product including instructions, which, when executed on the above communication device, enables the communication device to execute the method in the above method embodiment.

[0211] The method steps in the embodiments of the present application can be implemented by hardware, or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, register, hard disk, mobile hard disk, compact disc read-only memory (CD-ROM) or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a network device or a terminal. Of course, the processor and the storage medium can also be present in a network device or a terminal as discrete components.

[0212] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it 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 programs or instructions. When the computer program or instruction is loaded and executed on a computer, the layer or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device. The computer program or instruction may 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 program or instruction may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a tape; it may also be an optical medium, such as a digital video disc; it may also be a semiconductor medium, such as a solid-state hard disk.

[0213] In the various embodiments of the present application, unless otherwise specified or provided for in any logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0214] In the present application, "at least one" means one or more, and "more" means two or more. "At least one of the following: ..." or similar expressions means any one of the listed items or any combination of these items. For example, "at least one of the following: A, B and C", or "at least one of the following: A, B or C", can all mean: A exists alone, B exists alone, C exists alone, A and B exist at the same time, B and C exist at the same time, A and C exist at the same time, and A, B and C exist at the same time, where A, B, C can be singular or plural. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of the present application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of the present application, the character " / " indicates that the previous and next associated objects are in a "division" relationship.

[0215] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that: The method comprises: The first terminal sends first information, where the first information indicates a capability of the first terminal to process at least one second information, where the second information includes a sidelink-positioning reference signal SL-PRS; The first terminal receives and processes the at least one second information based on the capability.

2. The method according to claim 1, characterized in that The first information includes a first time length required for the first terminal to process the at least one second information within a first time unit.

3. The method according to claim 2, characterized in that The first terminal receiving and processing the at least one second information based on the capability includes: The first terminal receives the at least one second information within the first time unit, and processes the at least one second information within the first time length.

4. The method according to claim 3, characterized in that The method also includes: the first terminal does not receive or process the SL-PRS or data after the first time unit within the first time length.

5. The method according to claim 3 or 4, characterized in that The first time unit includes any one of the following: a time slot, a subframe, and an orthogonal frequency division multiplexing symbol.

6. The method according to any one of claims 2 to 5, characterized in that: The first information further includes at least one of the following: a maximum bandwidth of the SL-PRS supported by the first terminal, and a maximum amount of second information that the first terminal can process within the first time unit.

7. The method according to any one of claims 2 to 6, characterized in that The second information also includes at least one physical sidelink control channel PSCCH, and the at least one PSCCH is used to indicate whether at least one SL-PRS exists in the first time unit.

8. The method according to any one of claims 1 to 7, characterized in that The first information is carried in any one of the following messages: a sidelink long term evolution positioning protocol SLPP message, a radio resource control RRC message, or a long term evolution positioning protocol LPP message.

9. A communication method, characterized in that: The method comprises: The second terminal receives first information from the first terminal, the first information indicating the capability of the first terminal to process at least one second information, the second information including a sidelink-positioning reference signal SL-PRS; The second terminal sends part or all of the at least one second information to the first terminal based on a capability of the first terminal to process the at least one second information.

10. The method according to claim 9, characterized in that The first information includes a first time length required for the first terminal to process the at least one second information within a first time unit.

11. The method according to claim 10, characterized in that The second terminal sending part or all of the at least one second information to the first terminal based on the capability of the first terminal to process the at least one second information includes: The second terminal sends part or all of the at least one second information to the first terminal within the first time unit.

12. The method according to claim 11, characterized in that The method further includes: the second terminal does not send the SL-PRS or data after the first time unit to the first terminal within the first time length.

13. The method according to any one of claims 10 to 12, characterized in that The first time unit includes any one of the following: a time slot, a subframe, and an orthogonal frequency division multiplexing symbol.

14. The method according to any one of claims 10 to 13, characterized in that The first information further includes at least one of the following: a maximum bandwidth of the SL-PRS supported by the first terminal, and a maximum amount of second information that the first terminal can process within the first time unit.

15. The method according to any one of claims 10 to 14, characterized in that The second information also includes at least one physical sidelink control channel PSCCH, and the at least one PSCCH is used to indicate whether at least one SL-PRS exists in the first time unit.

16. The method according to any one of claims 9 to 15, characterized in that The first information is carried in any one of the following messages: a sidelink long term evolution positioning protocol SLPP message, a radio resource control RRC message, or a long term evolution positioning protocol LPP message.

17. A communication method, characterized in that: The method comprises: The first terminal sends first information, where the first information indicates a capability of the first terminal to process at least one second information, where the first information includes at least one of the following: the number of processes supported by the first terminal, and the processing time required for the first terminal to process the at least one second information in a first time unit in each process, where the second information includes a sidelink-positioning reference signal SL-PRS; The first terminal receives and processes the at least one second information based on the capability.

18. The method according to claim 17, characterized in that The first terminal supports at least two processes, wherein the processing duration corresponding to the first process is a first time length, and the processing duration corresponding to the second process is a second time length; The first terminal receiving and processing the at least one second information based on the capability includes: The first terminal receives and processes the at least one second information in a second time unit, the time length of the second time unit being the time length of the first time unit; The first terminal receives and processes the at least one second information in a third time unit, the time length of the third time unit being the time length of the first time unit; The third time unit is located after the second time unit and within the first time length.

19. The method according to claim 18, characterized in that The method also includes: the first terminal does not receive or process the SL-PRS or data after the third time unit within the first time length.

20. The method according to any one of claims 17 to 19, characterized in that The first information further includes at least one of the following: a maximum bandwidth of the SL-PRS supported by the first terminal, and a maximum amount of second information that the first terminal can process within the first time unit.

21. The method according to any one of claims 17 to 20, characterized in that The second information also includes at least one physical sidelink control channel PSCCH, and the at least one PSCCH is used to indicate whether at least one SL-PRS exists in the first time unit.

22. The method according to any one of claims 17 to 21, characterized in that The first information is carried in any one of the following messages: a sidelink long term evolution positioning protocol SLPP message, a radio resource control RRC message, or a long term evolution positioning protocol LPP message.

23. The method according to any one of claims 17 to 22, characterized in that The first time unit includes any one of the following: a time slot, a subframe, and an orthogonal frequency division multiplexing symbol.

24. A communication method, characterized in that: The method comprises: The second terminal receives first information from the first terminal, where the first information indicates a capability of the first terminal to process at least one second information, where the first information includes at least one of the following: the number of processes supported by the first terminal, and the processing time required for the first terminal to process the at least one second information in a first time unit in each process, and the second information includes a sidelink-positioning reference signal SL-PRS; The second terminal sends part or all of the at least one second information to the first terminal based on a capability of the first terminal to process the at least one second information.

25. The method of claim 24, wherein: The first terminal supports at least two processes, wherein the processing duration corresponding to the first process is a first time length, and the processing duration corresponding to the second process is a second time length; The second terminal sending part or all of the at least one second information to the first terminal based on the capability of the first terminal to process the at least one second information includes: The second terminal sends part or all of the at least one second information to the first terminal in a first time unit.

26. The method of claim 25, wherein: The first information further includes at least one of the following: a maximum bandwidth of the SL-PRS supported by the first terminal, and a maximum amount of second information that the first terminal can process within the first time unit.

27. The method according to any one of claims 24 to 26, characterized in that The second information also includes at least one physical sidelink control channel PSCCH, and the at least one PSCCH is used to indicate whether at least one SL-PRS exists in the first time unit.

28. The method according to any one of claims 24 to 27, characterized in that The first information is carried in any one of the following messages: a sidelink long term evolution positioning protocol SLPP message, a radio resource control RRC message, or a long term evolution positioning protocol LPP message.

29. A communication device, characterized in that: The method comprises a module or a unit for executing the method as claimed in any one of claims 1 to 28.

30. A communication device, characterized in that: The device comprises a processor, and when the program or instruction is executed by the processor, the device performs the method according to any one of claims 1 to 28.

31. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or instruction, and when the computer program or instruction is executed by the communication device, the method according to any one of claims 1 to 28 is implemented.

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