Communication method and device

Abstract

The invention provides a communication method and device used for improving the communication performance of SL communication, and belongs to the technical field of communication. In the method, after receiving an SL RRC reconfiguration completion message, a terminal determines to use a first resource set or a second resource set to perform sidelink SL communication according to an inclusion relationship between a first carrier list and a second carrier list. Wherein the first resource set is a resource set determined based on the first carrier list and the second carrier list, and the second resource set is a resource set determined based on the second carrier list. According to the method, the terminal can reasonably use the two carrier lists, so that the communication performance of SL communication is improved.

Description

Technical Field

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

[0002] In sidelink (SL) communication, some terminals support single-carrier communication, and the terminals use a first carrier list to provide SL configuration during SL communication, and the first carrier list may include only one carrier. In addition to supporting single-carrier communication, some terminals may also support multi-carrier communication. In addition to using the first carrier list, terminals supporting multi-carrier communication may also provide SL configuration by a second carrier list, and the second carrier list may include multiple carriers.

[0003] For a terminal supporting multi-carrier communication, there are two available carrier lists. If the terminal uses these two carrier lists unreasonably for SL communication, the communication performance of SL communication may be affected. Summary of the invention

[0004] The present application provides a communication method and device, which can improve the communication performance of SL communication.

[0005] In a first aspect, a communication method is provided, the execution subject of the method may be a terminal or a chip, a chip system or a circuit located in the terminal, and the method may be implemented by the following steps: receiving a sidelink radio resource control SLRRC reconfiguration completion message; after receiving the SL RRC reconfiguration completion message, determining to use a first resource set or a second resource set for sidelink SL communication according to the inclusion relationship between the first carrier list and the second carrier list. The first resource set is a resource set determined based on the first carrier list and the second carrier list, and the second resource set is a resource set determined based on the second carrier list.

[0006] The communication method provided in the embodiment of the present application, after receiving the SL RRC reconfiguration completion message, the terminal can determine whether to use the second carrier list for side SL communication, or to use the first carrier list and the second carrier list for SL communication according to the inclusion relationship between the first carrier list and the second carrier list, so that the terminal can reasonably use the two carrier lists and improve the communication performance of SL communication.

[0007] In a possible implementation, the first carrier list is a carrier list corresponding to single-carrier SL communication; the second carrier list is a carrier list corresponding to multi-carrier SL communication.

[0008] In one possible implementation, when the second carrier list does not include carriers in the first carrier list, the terminal can use the first resource set for SL communication after receiving the SL RRC reconfiguration completion message; wherein the first resource set includes the carriers included in the first carrier list and / or the resource pools corresponding to the carriers, and the carriers included in the second carrier list and / or the resource pools corresponding to the carriers.

[0009] In the above implementation, when the second carrier list does not include the carriers in the first carrier list, the terminal can use the first carrier list and the second carrier list for SL communication after receiving the SL RRC reconfiguration completion message. This is beneficial for the terminal to reasonably use the two carrier lists when the second carrier list does not include the carriers in the first carrier list, thereby improving the communication performance of SL communication.

[0010] In a possible implementation, when the second carrier list does not include the carriers in the first carrier list, the terminal can obtain the first channel busy ratio CBR measurement configuration from the network device after receiving the SL RRC reconfiguration completion message. The first CBR measurement configuration includes a first carrier index and a first resource pool identifier. The first carrier index is numbered based on the carriers included in the first resource set; the first resource pool identifier includes the identifier of the resource pool corresponding to each carrier indicated by the first carrier index. The terminal sends a first CBR measurement result to the network device, and the first CBR measurement result includes a first carrier index and a first resource pool identifier.

[0011] In a possible implementation, the identifiers of the resource pools corresponding to the first carrier and the second carrier are the same, wherein the first carrier is any carrier in the first carrier list, and the second carrier is any carrier in the second carrier list; or, the first carrier and the second carrier are any two carriers in the second carrier list.

[0012] In the above implementation, when the second carrier list does not include the carriers in the first carrier list, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the carriers included in the first carrier list and the second carrier list to receive the CBR measurement configuration and send the CBR measurement results for SL communication, the terminal can reasonably use the two carrier lists, reasonably process the CBR measurement configuration and send the CBR measurement results, thereby improving the communication performance of SL communication. At the same time, the CBR measurement configuration and the CBR measurement results include the carrier index, so that the resource pool identifiers corresponding to different carriers can be the same, and the current resource pool identifier definition can be reused.

[0013] In a possible implementation, when the second carrier list does not include a carrier in the first carrier list, the terminal may obtain a second CBR measurement configuration from the network device after receiving the SL RRC reconfiguration completion message. The second CBR measurement configuration includes a first resource pool identifier; the first resource pool identifier includes an identifier of a resource pool corresponding to the carrier included in the first resource set. The terminal sends a second CBR measurement result to the network device, and the second CBR measurement result includes the first resource pool identifier.

[0014] In a possible implementation manner, the carriers included in the first carrier list and the carriers included in the second carrier list have different identifiers of resource pools corresponding to them; or, any two carriers included in the second carrier list have different identifiers of resource pools corresponding to them.

[0015] In the above implementation, when the second carrier list does not include the carriers in the first carrier list, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the carriers included in the first carrier list and the second carrier list to receive the CBR measurement configuration and send the CBR measurement results to perform SL communication, the terminal can reasonably use the two carrier lists, reasonably process the CBR measurement configuration and send the CBR measurement results, thereby improving the communication performance of SL communication. At the same time, the CBR measurement configuration and the CBR measurement results include a resource pool identifier, and limiting the resource pool identifiers corresponding to different carriers to be different, so that the CBR measurement configuration and the CBR measurement results can clearly correspond to the resource pool under a certain carrier.

[0016] In a possible implementation, when the second carrier list does not include the carriers in the first carrier list, after receiving the SL RRC reconfiguration completion message, the terminal can obtain the first sidelink indication information from the network device and use the resources indicated by the first sidelink indication information for SL communication. The first sidelink indication information includes a first carrier index, which is used to indicate the resources for SL communication; the first carrier index is numbered based on the carriers included in the first resource set.

[0017] In a possible implementation, the index of the resource pool corresponding to the first carrier and the second carrier or the identifier of the resource pool is the same. The first carrier is any carrier in the first carrier list, and the second carrier is any carrier in the second carrier list; or the first carrier and the second carrier are any two carriers in the second carrier list.

[0018] In the above implementation, when the second carrier list does not include the carriers in the first carrier list, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the carriers included in the first carrier list and the second carrier list to process the side link resources obtained from the network device and perform SL communication, the terminal can reasonably use the two carrier lists and reasonably process the side link resources obtained from the network device, thereby improving the communication performance of SL communication. At the same time, the side link indication information includes a carrier index, which can make the resource pool index or resource pool identifier corresponding to different carriers the same, and reuse the current resource pool index or resource pool identifier definition.

[0019] In a possible implementation, when the second carrier list does not include the carriers in the first carrier list, after receiving the SL RRC reconfiguration completion message, the terminal can obtain the second side link indication information from the network device and use the resources indicated by the second side link indication information for SL communication. The second side link indication information includes a first resource pool index or a first resource pool identifier; the first resource pool index or the first resource pool identifier is used to indicate the resources for SL communication; the first resource pool index is numbered based on the resource pool corresponding to the carrier included in the first resource set; the first resource pool identifier includes the identifier of the resource pool corresponding to the carrier included in the first resource set.

[0020] In a possible implementation manner, the carriers included in the first carrier list and the carriers included in the second carrier list have different corresponding resource pool indexes or resource pool identifiers; or, any two carriers included in the second carrier list have different corresponding resource pool indexes or resource pool identifiers.

[0021] In the above implementation, when the second carrier list does not include the carriers in the first carrier list, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the carriers included in the first carrier list and the second carrier list to process the sidelink resources obtained from the network device and perform SL communication, the terminal can reasonably use the two carrier lists and reasonably process the sidelink resources obtained from the network device, thereby improving the communication performance of SL communication. At the same time, the sidelink resource indication information includes a resource pool index or a resource pool identifier, and limiting the resource pool indexes or resource pool identifiers corresponding to different carriers to be different, so that the sidelink resource indication information can clearly correspond to the resources of the resource pool under a certain carrier.

[0022] In one possible implementation, when the second carrier list includes carriers in the first carrier list, the terminal can use a second resource set for SL communication after receiving the SL RRC reconfiguration completion message; the second resource set includes the carriers included in the second carrier list and / or the resource pool corresponding to the carriers.

[0023] In the above implementation, when the second carrier list includes carriers in the first carrier list, the terminal can use the second carrier list for SL communication after receiving the SL RRC reconfiguration completion message, which is conducive to the terminal to reasonably use the two carrier lists and improve the communication performance of SL communication.

[0024] In a possible implementation, when the second carrier list includes a carrier in the first carrier list, after receiving the SL RRC reconfiguration completion message, the terminal can obtain a third CBR measurement configuration from the network device; the third CBR measurement configuration includes a second carrier index and a second resource pool identifier; the second carrier index is numbered based on the carrier included in the second resource set; the second resource pool identifier includes an identifier of a resource pool corresponding to each carrier indicated by the second carrier index. The terminal sends a third CBR measurement result to the network device, and the third CBR measurement result includes the second carrier index and the second resource pool identifier.

[0025] In a possible implementation, the identifiers of the resource pools corresponding to the first carrier and the second carrier are the same, wherein the first carrier is any carrier in the first carrier list, and the second carrier is any carrier in the second carrier list; or, the first carrier and the second carrier are any two carriers in the second carrier list.

[0026] In the above implementation, when the second carrier list includes carriers in the first carrier list, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the carriers included in the second carrier list to receive the CBR measurement configuration and send the CBR measurement results for SL communication, the terminal can reasonably use the two carrier lists, reasonably process the CBR measurement configuration and send the CBR measurement results, thereby improving the communication performance of SL communication. At the same time, the CBR measurement configuration and the CBR measurement results include carrier indexes, so that the resource pool identifiers corresponding to different carriers can be the same, and the current resource pool identifier definition can be reused.

[0027] In a possible implementation, when the second carrier list includes a carrier in the first carrier list, after receiving the SL RRC reconfiguration completion message, the terminal can obtain a fourth CBR measurement configuration from the network device; the fourth CBR measurement configuration includes a second resource pool identifier; the second resource pool identifier includes an identifier of a resource pool corresponding to the carrier included in the second resource set. The terminal sends a fourth CBR measurement result to the network device, and the fourth CBR measurement result includes the second resource pool identifier.

[0028] In a possible implementation manner, the carriers included in the first carrier list and the carriers included in the second carrier list have different identifiers of resource pools corresponding to them; or, any two carriers included in the second carrier list have different identifiers of resource pools corresponding to them.

[0029] In the above implementation, when the second carrier list includes carriers in the first carrier list, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the carriers included in the second carrier list to receive the CBR measurement configuration and send the CBR measurement results for SL communication, the terminal can reasonably use the two carrier lists, reasonably process the CBR measurement configuration and send the CBR measurement results, thereby improving the communication performance of SL communication. At the same time, the CBR measurement configuration and the CBR measurement results include a resource pool identifier, and limiting the resource pool identifiers corresponding to different carriers to be different, so that the CBR measurement configuration and the CBR measurement results can clearly correspond to the resource pool under a certain carrier.

[0030] In one possible implementation, when the second carrier list includes carriers in the first carrier list, after receiving the SL RRC reconfiguration completion message, the terminal can obtain third sidelink indication information from the network device and use the resources indicated by the third sidelink indication information for SL communication; the third sidelink indication information includes a second carrier index, and the second carrier index is used to indicate the resources for SL communication; the second carrier index is numbered based on the carriers included in the second resource set.

[0031] In a possible implementation, the index of the resource pool corresponding to the first carrier and the second carrier or the identifier of the resource pool is the same. The first carrier is any carrier in the first carrier list, and the second carrier is any carrier in the second carrier list; or the first carrier and the second carrier are any two carriers in the second carrier list.

[0032] In the above implementation, when the second carrier list includes carriers in the first carrier list, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the carriers included in the second carrier list to process the sidelink resources obtained from the network device and perform SL communication, the terminal can reasonably use the two carrier lists and reasonably process the sidelink resources obtained from the network device, thereby improving the communication performance of SL communication. At the same time, the sidelink indication information includes a carrier index, which can make the index or resource pool identifier of the resource pool corresponding to different carriers the same, and reuse the current resource pool index or resource pool identifier definition.

[0033] In one possible implementation, when the second carrier list includes carriers in the first carrier list, after receiving the SL RRC reconfiguration completion message, the terminal can obtain fourth sidelink indication information from the network device and use the resources indicated by the fourth sidelink indication information for SL communication; the fourth sidelink indication information includes a second resource pool index or a second resource pool identifier; the second resource pool index or the second resource pool identifier is used to indicate the resources for SL communication; the second resource pool index is numbered based on the resource pool corresponding to the carrier included in the second resource set; the second resource pool identifier includes the identifier of the resource pool corresponding to the carrier included in the second resource set.

[0034] In a possible implementation manner, the carriers included in the first carrier list and the carriers included in the second carrier list have different corresponding resource pool indexes or resource pool identifiers; or, any two carriers included in the second carrier list have different corresponding resource pool indexes or resource pool identifiers.

[0035] In the above implementation, when the second carrier list includes carriers in the first carrier list, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the carriers included in the second carrier list to process the sidelink resources obtained from the network device and perform SL communication, the terminal can reasonably use the two carrier lists and reasonably process the sidelink resources obtained from the network device, thereby improving the communication performance of SL communication. At the same time, the sidelink resource indication information includes a resource pool index or a resource pool identifier, and limiting the resource pool indexes or resource pool identifiers corresponding to different carriers to be different, so that the sidelink resource indication information can clearly correspond to the resources of the resource pool under a certain carrier.

[0036] In a possible implementation, the terminal may obtain the first carrier list and the second carrier list through a specified message, where the specified message is any one of the following messages: radio resource control RRC configuration information, RRC reconfiguration information, system message block SIB message, and pre-configuration message.

[0037] In a second aspect, a communication method is provided, the execution subject of the method may be a terminal or a chip, a chip system or a circuit located in the terminal, and the method may be implemented by the following steps: obtaining a channel busy ratio CBR measurement configuration from a network device; the CBR measurement configuration includes a carrier index and a resource pool identifier; the carrier index is used to indicate a target carrier, and the resource pool identifier is used to indicate a target resource pool in a resource pool corresponding to the target carrier. Sending a CBR measurement result to the network device, the CBR measurement result includes the above-mentioned carrier index and the above-mentioned resource pool identifier.

[0038] In the communication method provided in the embodiment of the present application, since the CBR measurement configuration and the CBR measurement result indicate a resource pool corresponding to a specified carrier through the carrier index and the resource pool identifier, even if the identifiers of the resource pools corresponding to two different carriers are the same, it is possible to distinguish through the carrier index which carrier the resource pool indicated by the resource pool identifier corresponds to.

[0039] In a possible implementation, the identifiers of the resource pools corresponding to the first carrier and the second carrier are the same, wherein the first carrier is any carrier in the first carrier list, and the second carrier is any carrier in the second carrier list; or the first carrier and the second carrier are any two carriers in the second carrier list.

[0040] In the above implementation, the CBR measurement configuration and the CBR measurement result include the carrier index and the resource pool identifier, so that the resource pool identifiers corresponding to different carriers can be the same, and the current resource pool identifier definition can be reused.

[0041] In a third aspect, a communication method is provided, the execution subject of the method may be a terminal or a chip, a chip system or a circuit located in the terminal, and the method may be implemented by the following steps: obtaining sidelink indication information from a network device, wherein the sidelink indication information includes a carrier index, and the carrier index is used to indicate resources for SL communication. SL communication is performed using the resources indicated by the sidelink indication information.

[0042] The communication method provided in the embodiment of the present application includes a carrier index in the sidelink indication information, and the carrier index is used to indicate the resource pool corresponding to a certain carrier. Therefore, even if the indexes of the resource pools corresponding to two different carriers or the identifiers of the resource pools are the same, it is possible to distinguish which carrier the resource pool indicated by the sidelink indication information corresponds to by the carrier index.

[0043] In a possible implementation, the index of the resource pool corresponding to the first carrier and the second carrier or the identifier of the resource pool is the same. The first carrier is any carrier in the first carrier list, and the second carrier is any carrier in the second carrier list; or the first carrier and the second carrier are any two carriers in the second carrier list.

[0044] In the above implementation, the sidelink indication information includes a carrier index, so that the indexes or resource pool identifiers of resource pools corresponding to different carriers can be the same, and the current resource pool identifier definition can be reused.

[0045] According to a fourth aspect, a terminal is provided, which may include a module for executing any method provided by the first aspect, the second aspect or the third aspect.

[0046] In a fifth aspect, a terminal is provided, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the computer program is executed by the processor, the processor implements any one of the methods provided in the first aspect, the second aspect or the third aspect.

[0047] In a sixth aspect, a communication system is provided, comprising a terminal supporting SL communication, wherein the terminal is the terminal provided in the fifth aspect.

[0048] In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute any one of the methods provided in the first aspect, the second aspect or the third aspect above.

[0049] In an eighth aspect, an embodiment of the present application provides a computer program product comprising computer executable instructions, which are used to enable a computer to execute any one of the methods provided in the first, second or third aspects above.

[0050] The technical effects that can be achieved in any of the fourth to eighth aspects mentioned above can refer to the description of the technical effects in the first to third aspects mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 A network architecture diagram of a communication system provided in an embodiment of the present application;

[0052] Figure 2 A flow chart of a communication method provided in an embodiment of the present application;

[0053] Figure 3 An interaction diagram between a terminal and a network device provided in an embodiment of the present application;

[0054] Figure 4 Another diagram of interaction between a terminal and a network device provided in an embodiment of the present application;

[0055] Figure 5 Another diagram of interaction between a terminal and a network device provided in an embodiment of the present application;

[0056] Figure 6 Another diagram of interaction between a terminal and a network device provided in an embodiment of the present application;

[0057] Figure 7 A flowchart of another communication method provided in an embodiment of the present application;

[0058] Figure 8 Another diagram of interaction between a terminal and a network device provided in an embodiment of the present application;

[0059] Fig. 9 Another diagram of interaction between a terminal and a network device provided in an embodiment of the present application;

[0060] Fig.10 Another diagram of interaction between a terminal and a network device provided in an embodiment of the present application;

[0061] Fig.11 Another diagram of interaction between a terminal and a network device provided in an embodiment of the present application;

[0062] Fig.12 A structural block diagram of a terminal provided in an embodiment of the present application;

[0063] Fig.13 A structural block diagram of another terminal provided in an embodiment of the present application;

[0064] Fig.14 A structural block diagram of another terminal provided in an embodiment of the present application;

[0065] Fig.15 A schematic diagram of the structure of a terminal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. The terms used in the implementation method section of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0067] Before introducing the specific solutions provided by the embodiments of the present application, some terms in the present application are explained to facilitate understanding by those skilled in the art, and the terms in the present application are not limited.

[0068] (1) SL communication: SL communication refers to a communication mode in which two peer user nodes communicate directly with each other. For example, SL communication can be performed between terminals. In SL communication, the sender can send data to the receiver through the SL physical shared channel.

[0069] (2) Carrier aggregation (CA): CA is a wireless communication technology that can combine signals from multiple frequency bands. Through CA technology, terminals can use multiple frequency bands for data transmission at the same time, thereby increasing the bandwidth and data transmission speed of the wireless network. At the same time, CA technology can also improve the coverage and reliability of communication.

[0070] In the embodiments of the present application, "multiple" refers to two or more than two. In view of this, in the embodiments of the present application, "multiple" can also be understood as "at least two". "At least one" can be understood as one or more, for example, one, two or more. For example, including at least one means including one, two or more, and there is no restriction on which ones are included. For example, including at least one of A, B and C, then A, B, C, A and B, A and C, B and C, or A and B and C may be included. "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. In addition, the character " / ", unless otherwise specified, generally indicates that the previously associated objects are in an "or" relationship.

[0071] Unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects and are not used to limit the order, timing, priority or importance of the multiple objects.

[0072] The foregoing text introduces some of the terms involved in the embodiments of the present application. The following text introduces the architecture of the network system to which the method provided by the present application is applied.

[0073] The communication method provided in the present application can be applied to a 5G new radio (NR) system, or can also be applied to other communication systems, for example, an Internet of Things (IoT) system, a vehicle-to-everything (V2X) system, a narrowband Internet of Things (NB-IoT) system, a long term evolution (LTE) system, a fifth generation (5G) communication system, an LTE and 5G hybrid architecture, a 5G new radio (NR) system, and new communication systems that will emerge in the future development of communications.

[0074] The terminal involved in the embodiments of the present application is an entity on the user side for receiving or transmitting signals. The terminal can be a device that provides voice and / or data connectivity to the user, for example, a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal can also be other processing devices connected to a wireless modem. The terminal can communicate with one or more core networks through a radio access network (RAN). The terminal can also be called a wireless terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, or a user equipment (UE), etc. The terminal can be a mobile terminal, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device, which exchanges language and / or data with a wireless access network. For example, the terminal may also be a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and other devices. Common terminals include, for example, mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), wearable devices such as smart watches, smart bracelets, pedometers, and smart home appliances such as smart refrigerators and smart washing machines, but the embodiments of the present application are not limited thereto.

[0075] The network device involved in the embodiments of the present application is an entity for transmitting or receiving signals on the network side, which can be used to convert received air frames to Internet Protocol (IP) packets, as a router between the terminal and the rest of the access network, wherein the rest of the access network may include IP networks, etc. The network device can also coordinate the attribute management of the air interface. For example, the network device can be an evolutionary Node B (eNB or e-NodeB) in LTE, a new radio controller (NR controller), a gNode B (gNB) in a 5G system, a centralized unit, a new wireless base station, a radio frequency remote module, a micro base station, a relay, a distributed unit, a transmission reception point (TRP) or a transmission point (TP) or any other wireless access device, but the embodiments of the present application are not limited thereto.

[0076] See also Figure 1 As shown, a communication system provided in an embodiment of the present application includes two terminals, namely terminal A and terminal B. The terminal is referred to as UE hereinafter. Terminal A and terminal B can communicate data through the network device 100, or they can communicate directly between UEs without the help of the network device 100. The interface between UEs can be called a PC5 interface, which is similar to the Uu interface between UEs and base stations. The communication link between terminal A and terminal B can be called SL. A typical application scenario of SL communication can be a vehicle networking system. In a vehicle networking system, each vehicle can be understood as a UE, and data can be directly transmitted between UEs through SL without passing through the network, thereby effectively reducing communication delays. Unicast, multicast, and broadcast can be supported on SL.

[0077] The UE (e.g., terminal A or terminal B) in the communication system can work in the network device allocation resource mode (mode 1) or the user self-selection resource mode (mode 2). Among them, mode 1 can be applied to SL communication in the case of network coverage, and the network device can allocate resources for SL communication to terminal A and terminal B according to the buffer state report (BSR) reporting status of the terminal. In mode 2, the sender selects transmission resources from the resource pool configured by the network device or the preset resource pool for communication.

[0078] Exemplarily, terminal A can be used as a transmitter of data or signaling, and terminal B can be used as a receiver of data or signaling. Terminal A can be in an in coverage (IC) state or an out of coverage (OOC) state. When terminal A is in a radio resource control (RRC) connected state, terminal A can obtain SL resources for SL communication from the base station, and this communication mode can be called a resource allocation mode of mode1. Specifically, the base station can schedule SL resources for the terminal through downlink control information (DCI), or configure SL configuration authorization (SL configured grant) for the terminal through an RRC message. When terminal A works in mode2 (can be in RRC connected state, RRC inactive state, RRC idle state, OOC state), terminal A can receive SL resource pool configuration from the base station, or obtain SL resource pool configuration from pre-configuration, and then select SL resources in the SL resource pool for transmission. Among them, terminal A can select SL resources randomly, or select based on the results of sensing or partial sensing.

[0079] Optionally, the communication system may further include a network device, and the network device may perform uplink / downlink communication with a UE in the communication system (e.g., terminal A or terminal B). When a terminal in the communication system (e.g., terminal A or terminal B) operates in mode 1, the network device may further allocate resources for SL communication to terminal A or terminal B.

[0080] Figure 1 It is only a schematic diagram and does not specifically limit the type of communication system, or the number and type of devices included in the communication system.

[0081] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0082] In sidelink SL communication, some terminals support single-carrier communication, and the terminals use the first carrier list to provide SL configuration during the SL communication process; some terminals, in addition to supporting single-carrier communication, can also support CA, that is, support multi-carrier communication. In addition to using the first carrier list, terminals that support multi-carrier communication can also use the second carrier list to provide SL configuration.

[0083] Regarding how a terminal uses two carrier lists for SL communication, an embodiment of the present application provides a communication method and device. The method and device are based on the same concept. Since the method and device solve the problem in a similar way, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0084] For a terminal, it may receive data sent by one or more other terminals. Hereinafter, the terminal that receives data is called a receiving terminal, and the terminal that sends data is called a sending terminal. That is, for a receiving terminal, it may receive data sent by one or more other sending terminals. It should be understood that the sending terminal and the receiving terminal are relative. The sending terminal may also have a receiving function, and the receiving terminal may also have a sending function.

[0085] In the embodiment of the present application, terminal A may refer to a transmitting end, and terminal B may refer to a receiving end, and both the transmitting end and the receiving end support CA.

[0086] The communication method provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0087] In some embodiments, the second carrier list does not include carriers in the first carrier list, and the terminal may refer to Figure 2 The communication method shown is executed, Figure 2 The communication method shown can be executed by a sending end (hereinafter referred to as terminal A). Figure 2 As shown, the communication method may include the following steps:

[0088] S201: Acquire a first carrier list and a second carrier list.

[0089] The second carrier list does not include carriers in the first carrier list, that is, there is no overlap or intersection between the carriers included in the second carrier list and the carriers included in the first carrier list.

[0090] Exemplarily, terminal A may obtain a first carrier list and a second carrier list through specified information. The specified message is any one of the following messages: RRC dedicated signaling, system information block (SIB) message, pre-configuration message. The RRC dedicated signaling may include but is not limited to RRC configuration information, RRC reconfiguration information, etc. In some embodiments, the terminal may obtain a first carrier list through a first specified information, wherein the first specified message may be any one of the following messages: RRC configuration information, RRC reconfiguration information, SIB message, pre-configuration message. The terminal may obtain a second carrier list through a second specified information, wherein the second specified message may be any one of the following messages: RRC configuration information, RRC reconfiguration information, SIB message, pre-configuration message.

[0091] The first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list corresponding to multi-carrier SL communication; or, the first carrier list is a carrier list corresponding to SL communication in R16 or R17, and the second carrier list is a carrier list corresponding to SL communication in R18 or R18+. R16 is the 16th public version of the protocol of the International Telecommunication Convention, R17 is the 17th public version of the protocol of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0092] S202: Perform SL communication based on the first carrier list and / or the second carrier list.

[0093] In some embodiments, before receiving the SL RRC reconfiguration completion message sent by terminal B, or before the carrier configuration signaling is completed, terminal A can perform SL communication based on the first carrier list. The completion of the carrier configuration signaling refers to the exchange of carrier configurations between terminals and the sending of corresponding completion signaling. For example, terminal A sends a SL RRC reconfiguration message to terminal B, and the SL RRC reconfiguration message includes carrier configuration. After terminal B receives the SL RRC reconfiguration message sent by terminal A, it sends a SL RRC reconfiguration completion message to terminal A, which can be regarded as the completion of the carrier configuration signaling between terminal A and terminal B. Terminal A is based on the first carrier list, which can be understood as terminal A using the carriers included in the first carrier list for SL communication; or, terminal A uses the resource pool corresponding to the carriers included in the first carrier list for SL communication.

[0094] After receiving the SL RRC reconfiguration completion message sent by terminal B, or after the carrier configuration signaling is completed, terminal A can perform SL communication based on the first carrier list and the second carrier list. Exemplarily, terminal A can use the carriers included in the first carrier list and the carriers included in the second carrier list to perform SL communication; or, terminal A can use the resource pool corresponding to the carriers included in the first carrier list and the resource pool corresponding to the carriers included in the second carrier list to perform SL communication. For example, assuming that the first carrier list includes carrier 1 and the second carrier list includes carrier 2, carrier 3 and carrier 4, terminal A can use carrier 1, carrier 2, carrier 3 and carrier 4 for SL communication, that is, terminal A can select SL resources for data transmission from carrier 1, carrier 2, carrier 3 and carrier 4; or, terminal A can use the resource pool corresponding to carrier 1, the resource pool corresponding to carrier 2, the resource pool corresponding to carrier 3 and the resource pool corresponding to carrier 4 for SL communication, that is, terminal A can select SL resources for data transmission from the resource pool corresponding to carrier 1, the resource pool corresponding to carrier 2, the resource pool corresponding to carrier 3 and the resource pool corresponding to carrier 4. The RRC reconfiguration completion message may be the first SL RRC reconfiguration completion message sent by terminal B to terminal A after terminal A establishes a SL communication link with terminal B. The SL RRC reconfiguration completion message may be a SL RRC reconfiguration completion message corresponding to a SL RRC reconfiguration message including a SL carrier configuration.

[0095] In the above embodiment, by limiting that after receiving the SL RRC reconfiguration completion message, according to the inclusion relationship between the first carrier list and the second carrier list, when the second carrier list does not include the carriers in the first carrier list, the terminal performs SL communication based on the first carrier list and the second carrier list, so that the terminal can reasonably use the two carrier lists, and the communication performance of SL CA can be improved.

[0096] In some embodiments, terminal A may receive a CBR measurement configuration from a network device, and the CBR measurement configuration may include a carrier index and a resource pool identifier, which is used to indicate a resource pool corresponding to a specified carrier. Among them, the resource pool identifier is used to indicate the resource pool corresponding to the CBR measurement configuration. The carrier index is used to indicate a carrier, which is the carrier corresponding to the resource pool corresponding to the CBR measurement configuration. The carrier index can be numbered based on the carriers included in the first carrier list and / or the second carrier list, and the resource pool identifier may include the identifier of the resource pool corresponding to each carrier indicated by the above carrier index.

[0097] The above-mentioned first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list supporting multi-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17, and the second carrier list may be a carrier list corresponding to SL communication in R18 or R18+. Among them, R16 is the protocol of the 16th public version of the International Telecommunication Convention, R17 is the protocol of the 17th public version of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0098] The identifiers of the resource pools corresponding to different carriers included in the first carrier list or the second carrier list may be the same. The identifier of the resource pool corresponding to the first carrier included in the first carrier list and the identifier of the resource pool corresponding to the second carrier included in the second carrier list may be the same. That is to say, the identifiers of the resource pools corresponding to any two different carriers in the first carrier list and the second carrier list may be the same. Since the CBR measurement configuration indicates a resource pool corresponding to a specified carrier through a carrier index and a resource pool identifier, even if the identifiers of the resource pools corresponding to two different carriers are the same, the carrier index can be used to distinguish which carrier the resource pool indicated by the resource pool identifier corresponds to.

[0099] Terminal A may send a CBR measurement result to the network device based on the received CBR measurement configuration and the CBR measurement result. The CBR measurement result may include the carrier index and resource pool identifier included in the CBR measurement configuration.

[0100] In the above embodiment, the CBR measurement configuration and the CBR measurement result include the carrier index and the resource pool identifier, so that the resource pool identifiers corresponding to different carriers can be the same, and the current resource pool identifier definition can be reused.

[0101] In some other embodiments, terminal A may receive sidelink indication information from a network device, and the sidelink indication information may include a carrier index for indicating resources for SL communication. Terminal A may use the resources indicated by the sidelink indication information for SL communication. The carrier index is used to indicate a carrier, which is a carrier corresponding to the resources corresponding to the sidelink indication information. The carrier index may be numbered based on the carriers included in the first carrier list and / or the second carrier list.

[0102] In some optional embodiments, the sidelink indication information may include a resource pool index or a resource pool identifier in addition to the carrier index; the resource pool index or the resource pool identifier is used to indicate a resource pool, and the resource pool is a resource pool corresponding to the resource indicated by the sidelink indication information. The resource pool index or the resource pool identifier may include an index or identifier of a resource pool corresponding to each carrier indicated by the carrier index in the sidelink indication information a.

[0103] The above-mentioned first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list supporting multi-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17, and the second carrier list may be a carrier list corresponding to SL communication in R18 or R18+. Among them, R16 is the protocol of the 16th public version of the International Telecommunication Convention, R17 is the protocol of the 17th public version of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0104] The indexes of resource pools or identifiers of resource pools corresponding to different carriers included in the first carrier list or the second carrier list may be the same. The indexes of resource pools or identifiers of resource pools corresponding to the first carrier included in the first carrier list and the indexes of resource pools or identifiers of resource pools corresponding to the second carrier included in the second carrier list may be the same. That is, the indexes of resource pools or identifiers of resource pools corresponding to any two different carriers in the first carrier list and the second carrier list may be the same.

[0105] In the above embodiment, the sidelink indication information includes a carrier index, so that resource pool indexes or resource pool identifiers corresponding to different carriers can be the same, and the current resource pool index or resource pool identifier definition can be reused.

[0106] Several specific embodiments of the present application are described in detail below. In an optional embodiment, the interaction process between terminal A and the network device is as follows: Figure 3 As shown, the following steps may be included:

[0107] S301: The network device sends a CBR measurement configuration a to terminal A.

[0108] Before receiving the SL RRC reconfiguration completion message, terminal A can obtain a channel busy ratio (CBR) measurement configuration a from the network device. CBR measurement configuration a may include a carrier index and a resource pool identifier, which is used to indicate a resource pool corresponding to a specified carrier. The resource pool identifier is used to indicate the resource pool corresponding to CBR measurement configuration a. The carrier index is used to indicate a carrier, which is the carrier corresponding to the resource pool corresponding to CBR measurement configuration a. The carrier index can be numbered based on the carriers included in the first carrier list; the resource pool identifier may include the identifier of the resource pool corresponding to each carrier indicated by the above carrier index. For example, assuming that the first carrier list includes M carriers, 0, 1, and M-1 can be used in the carrier index to indicate the M carriers included in the first carrier list. The first carrier list is a carrier list corresponding to single-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only an SL configuration corresponding to one carrier.

[0109] S302: Terminal A performs CBR measurement.

[0110] Terminal A can perform CBR measurements on each currently available SL resource to determine the CBR of each resource pool. For example, the SL resources currently available to terminal A include the resource pool corresponding to carrier 1, the resource pool corresponding to carrier 2, the resource pool corresponding to carrier 3, and the resource pool corresponding to carrier 4. Terminal A can perform CBR measurements to determine the CBR of the resource pool corresponding to carrier 1, the CBR of the resource pool corresponding to carrier 2, the CBR of the resource pool corresponding to carrier 3, and the CBR of the resource pool corresponding to carrier 4.

[0111] In some embodiments, step S302 may be performed before step S301.

[0112] S303, terminal A sends the CBR measurement result a to the network device.

[0113] The CBR measurement result a may include the carrier index and resource pool identifier included in the CBR measurement configuration a. The carrier index may be numbered based on the carriers included in the first carrier list; the resource pool identifier may include the identifier of the resource pool corresponding to each carrier indicated by the above carrier index. For example, assuming that the CBR measurement configuration a includes the carrier index of carrier 1 and the identifier of the resource pool corresponding to carrier 1, the CBR measurement result a may include the carrier index of carrier 1 and the identifier of the resource pool corresponding to carrier 1.

[0114] The network device receives the CBR measurement result a sent by the terminal A, and schedules SL resources for the terminal A or provides SL resource configuration according to the CBR of the resource pool included in the CBR measurement result a.

[0115] The above process can be understood as that, before receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the first carrier list.

[0116] S304, terminal A receives the SL RRC reconfiguration completion message.

[0117] In some embodiments, when terminal A performs SL communication with terminal B, terminal A sends a SL RRC reconfiguration message to terminal B. After receiving the SL RRC reconfiguration message sent by terminal A, terminal B sends a SL RRC reconfiguration completion message to terminal A. The RRC reconfiguration completion message may be the first SL RRC reconfiguration completion message sent by terminal B to terminal A during the process of establishing a SL communication link between terminal A and terminal B. The SL RRC reconfiguration completion message may be a SL RRC reconfiguration completion message corresponding to an SLRRC reconfiguration message including SL carrier configuration.

[0118] S305: The network device sends a CBR measurement configuration b to terminal A.

[0119] After receiving the SL RRC reconfiguration completion message, terminal A can obtain CBR measurement configuration b from the network device. CBR measurement configuration b may include a carrier index and a resource pool identifier. The carrier index may be numbered based on the carriers included in the first resource set. The first resource set may include a first carrier list and a second carrier list.

[0120] In an optional embodiment, the carrier index in the CBR measurement configuration b may be numbered based on the carriers included in the first carrier list and the carriers included in the second carrier list; the resource pool identifier may include the identifier of the resource pool corresponding to each carrier indicated by the above carrier index. For example, assuming that the first carrier list includes carrier 1 and the second carrier list includes carrier 2, carrier 3 and carrier 4, the carrier index in the CBR measurement configuration b may use 0, 1, 2, 3 to indicate carrier 1, carrier 2, carrier 3 and carrier 4 respectively, and the resource pool identifier in the CBR measurement configuration b may include the identifier of the resource pool corresponding to carrier 1, the identifier of the resource pool corresponding to carrier 2, the identifier of the resource pool corresponding to carrier 3 and the identifier of the resource pool corresponding to carrier 4. For another example, assuming that the first carrier list includes M carriers and the second carrier list includes N carriers, the carrier index in the CBR measurement configuration b may use 0, 1, M-1 to indicate the M carriers included in the first carrier list, and use M, M+1, M+N-1 to indicate the N carriers included in the second carrier list.

[0121] In another optional embodiment, the carrier index in the CBR measurement configuration b may also be numbered based on some carriers included in the first carrier list and the second carrier list. For example, the carrier index in the CBR measurement configuration b may be numbered based on all carriers included in the first carrier list, or the carrier index in the CBR measurement configuration b may be numbered based on all carriers included in the second carrier list, or the carrier index in the CBR measurement configuration b may be numbered based on some carriers in the first carrier list, or the carrier index in the CBR measurement configuration b may be numbered based on some carriers in the second carrier list, or the carrier index in the CBR measurement configuration b may be numbered based on some carriers in the first carrier list and some carriers in the second carrier list.

[0122] The above-mentioned first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list supporting multi-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17, and the second carrier list may be a carrier list corresponding to SL communication in R18 or R18+. Among them, R16 is the protocol of the 16th public version of the International Telecommunication Convention, R17 is the protocol of the 17th public version of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0123] The identifiers of the resource pools corresponding to the different carriers included in the first carrier list or the second carrier list may be the same. The identifier of the resource pool corresponding to the first carrier included in the first carrier list and the identifier of the resource pool corresponding to the second carrier included in the second carrier list may be the same. That is to say, the identifiers of the resource pools corresponding to any two different carriers in the first resource set may be the same. Since the CBR measurement configuration b indicates a resource pool corresponding to a specified carrier through a carrier index and a resource pool identifier, even if the identifiers of the resource pools corresponding to two different carriers are the same, it is possible to distinguish through the carrier index which carrier the resource pool indicated by the resource pool identifier corresponds to.

[0124] S306: Terminal A performs CBR measurement.

[0125] Terminal A can perform CBR measurements on each currently available SL resource to determine the CBR of each resource pool. For example, the SL resources currently available to terminal A include the resource pool corresponding to carrier 1, the resource pool corresponding to carrier 2, the resource pool corresponding to carrier 3, and the resource pool corresponding to carrier 4. Terminal A can perform CBR measurements to determine the CBR of the resource pool corresponding to carrier 1, the CBR of the resource pool corresponding to carrier 2, the CBR of the resource pool corresponding to carrier 3, and the CBR of the resource pool corresponding to carrier 4.

[0126] In some embodiments, step S306 may be performed before step S305.

[0127] S307, terminal A sends the CBR measurement result b to the network device.

[0128] The CBR measurement result b may include the carrier index and resource pool identifier included in the CBR measurement configuration b. The carrier index may be numbered based on the carriers included in the first resource set, and the resource pool identifier may include the identifier of the resource pool corresponding to each carrier indicated by the above carrier index. For example, assuming that the CBR measurement configuration b includes carrier 1 and the identifier of the resource pool corresponding to carrier 1, and carrier 2 and the identifier of the resource pool corresponding to carrier 2, the CBR measurement result b may include carrier 1 and the identifier of the resource pool corresponding to carrier 1, and carrier 2 and the identifier of the resource pool corresponding to carrier 2.

[0129] For another example, assuming that the CBR measurement configuration b includes carrier 1 and the identifier of the resource pool corresponding to carrier 1, carrier 2 and the identifier of the resource pool corresponding to carrier 2, carrier 3 and the identifier of the resource pool corresponding to carrier 3, and carrier 4 and the identifier of the resource pool corresponding to carrier 4, then the CBR measurement result b may include carrier 1 and the identifier of the resource pool corresponding to carrier 1, carrier 2 and the identifier of the resource pool corresponding to carrier 2, carrier 3 and the identifier of the resource pool corresponding to carrier 3, and carrier 4 and the identifier of the resource pool corresponding to carrier 4.

[0130] The network device receives the CBR measurement result b sent by the terminal A, and schedules SL resources for the terminal A or provides SL resource configuration according to the CBR of the resource pool included in the CBR measurement result b.

[0131] The above process can be understood as, after receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the first carrier list and the second carrier list.

[0132] In the above embodiment, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the carriers included in the first carrier list and the second carrier list to receive the CBR measurement configuration and send the CBR measurement results for SL communication, the terminal can reasonably use the two carrier lists, reasonably process the CBR measurement configuration and send the CBR measurement results, thereby improving the communication performance of SL CA. At the same time, the CBR measurement configuration and the CBR measurement results include the carrier index, so that the resource pool identifiers corresponding to different carriers can be the same, and the current resource pool identifier definition can be reused.

[0133] In another optional embodiment, the interaction process between terminal A and the network device, such as Figure 4 As shown, the following steps may be included:

[0134] S401: The network device sends a CBR measurement configuration c to terminal A.

[0135] Before receiving the SL RRC reconfiguration completion message, terminal A can obtain the CBR measurement configuration c from the network device. The CBR measurement configuration c may include a resource pool identifier. The resource pool identifier is used to indicate the resource pool corresponding to the CBR measurement configuration. The resource pool identifier includes an identifier of the resource pool corresponding to the carrier included in the first carrier list. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only an SL configuration corresponding to one carrier.

[0136] S402: Terminal A performs CBR measurement.

[0137] Terminal A can perform CBR measurements on each currently available SL resource to determine the CBR of each resource pool. For example, the SL resources currently available to terminal A include the resource pool corresponding to carrier 1, the resource pool corresponding to carrier 2, the resource pool corresponding to carrier 3, and the resource pool corresponding to carrier 4. Terminal A can perform CBR measurements to determine the CBR of the resource pool corresponding to carrier 1, the CBR of the resource pool corresponding to carrier 2, the CBR of the resource pool corresponding to carrier 3, and the CBR of the resource pool corresponding to carrier 4.

[0138] In some embodiments, step S402 may be performed before step S401.

[0139] S403, terminal A sends the CBR measurement result c to the network device.

[0140] The CBR measurement result c may include the resource pool identifier included in the CBR measurement configuration c. The resource pool identifier includes the identifier of the resource pool corresponding to the carrier included in the first carrier list. For example, assuming that the CBR measurement configuration c includes the identifier of the resource pool corresponding to carrier 1, the CBR measurement result c may also include the identifier of the resource pool corresponding to carrier 1.

[0141] The network device receives the CBR measurement result c sent by the terminal A, and schedules SL resources for the terminal A or provides SL resource configuration according to the CBR of the resource pool included in the CBR measurement result c.

[0142] The above process can be understood as that, before receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the first carrier list.

[0143] S404, terminal A receives the SL RRC reconfiguration completion message.

[0144] In some embodiments, when terminal A performs SL communication with terminal B, terminal A sends a SL RRC reconfiguration message to terminal B. After receiving the SL RRC reconfiguration message sent by terminal A, terminal B sends a SL RRC reconfiguration completion message to terminal A. The RRC reconfiguration completion message may be the first SL RRC reconfiguration completion message sent by terminal B to terminal A during the process of establishing a SL communication link between terminal A and terminal B. The SL RRC reconfiguration completion message may be a SL RRC reconfiguration completion message corresponding to an SLRRC reconfiguration message including SL carrier configuration.

[0145] S405: The network device sends a CBR measurement configuration d to terminal A.

[0146] After receiving the SL RRC reconfiguration completion message, terminal A can obtain the CBR measurement configuration d from the network device. The CBR measurement configuration d may include a resource pool identifier. The resource pool identifier is used to indicate the resource pool corresponding to the CBR measurement configuration. The resource pool identifier includes an identifier of a resource pool corresponding to the carrier included in the first resource set, and the first resource set may include a first carrier list and a second carrier list.

[0147] In an optional embodiment, the resource pool identifier in the CBR measurement configuration d may include an identifier of a resource pool corresponding to a carrier in the first carrier list and an identifier of a resource pool corresponding to a carrier included in the second carrier list. Exemplarily, the resource pool identifier in the CBR measurement configuration d may be numbered sequentially starting from 0 according to the resource pools corresponding to the carriers included in the first carrier list and the second carrier list. For example, 0, 1, ..., X-1 respectively indicate X resource pools corresponding to the carriers included in the first carrier list, and X, X+1, ..., X+Y-1 respectively indicate Y resource pools corresponding to the carriers included in the second carrier list. In another optional embodiment, the resource pool identifier in the CBR measurement configuration d may also include an identifier of a resource pool corresponding to some carriers in the first carrier list and the second carrier list. For example, the resource pool identifier in the CBR measurement configuration d may include the identifier of the resource pool corresponding to all the carriers in the first carrier list, or the resource pool identifier in the CBR measurement configuration d may include the identifier of the resource pool corresponding to all the carriers in the second carrier list, or the resource pool identifier in the CBR measurement configuration d may include the identifier of the resource pool corresponding to some of the carriers in the first carrier list, or the resource pool identifier in the CBR measurement configuration d may include the identifier of the resource pool corresponding to some of the carriers in the second carrier list, or the resource pool identifier in the CBR measurement configuration d may be based on the identifier of the resource pool corresponding to some of the carriers in the first carrier list and the identifier of the resource pool corresponding to some of the carriers in the second carrier list.

[0148] The above-mentioned first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list supporting multi-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17, and the second carrier list may be a carrier list corresponding to SL communication in R18 or R18+. Among them, R16 is the protocol of the 16th public version of the International Telecommunication Convention, R17 is the protocol of the 17th public version of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0149] The identifiers of the resource pools corresponding to different carriers included in the first carrier list or the second carrier list are different; in other words, the identifiers of the resource pools corresponding to any carrier included in the first carrier list and any carrier included in the second carrier list are different; or, the identifiers of the resource pools corresponding to any two carriers included in the second carrier list are different.

[0150] S406: Terminal A performs CBR measurement.

[0151] Terminal A can perform CBR measurements on each currently available SL resource to determine the CBR of each resource pool. For example, the SL resources currently available to terminal A include the resource pool corresponding to carrier 1, the resource pool corresponding to carrier 2, the resource pool corresponding to carrier 3, and the resource pool corresponding to carrier 4. Terminal A can perform CBR measurements to determine the CBR of the resource pool corresponding to carrier 1, the CBR of the resource pool corresponding to carrier 2, the CBR of the resource pool corresponding to carrier 3, and the CBR of the resource pool corresponding to carrier 4.

[0152] In some embodiments, step S406 may be performed before step S405.

[0153] S407, terminal A sends the CBR measurement result d to the network device.

[0154] The CBR measurement result b may include the resource pool identifier included in the CBR measurement configuration d. The resource pool identifier includes the identifier of the resource pool corresponding to the carrier included in the first resource set. For example, assuming that the CBR measurement configuration d includes the identifier of the resource pool corresponding to carrier 1 and the identifier of the resource pool corresponding to carrier 2, the CBR measurement result d may also include the identifier of the resource pool corresponding to carrier 1 and the identifier of the resource pool corresponding to carrier 2.

[0155] For another example, assuming that the CBR measurement configuration d includes the identifier of the resource pool corresponding to carrier 1, the identifier of the resource pool corresponding to carrier 2, the identifier of the resource pool corresponding to carrier 3, and the identifier of the resource pool corresponding to carrier 4, then the CBR measurement result d may include the identifier of the resource pool corresponding to carrier 1, the identifier of the resource pool corresponding to carrier 2, the identifier of the resource pool corresponding to carrier 3, and the identifier of the resource pool corresponding to carrier 4.

[0156] The network device receives the CBR measurement result d sent by the terminal A, and schedules SL resources for the terminal A or provides SL resource configuration according to the CBR of the resource pool included in the CBR measurement result d.

[0157] The above process can be understood as, after receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the first carrier list and the second carrier list.

[0158] In the above embodiment, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the resource pool included in the first carrier list and the second carrier list to receive the CBR measurement configuration and send the CBR measurement result to perform SL communication, the terminal can reasonably use the two carrier lists, reasonably process the CBR measurement configuration and send the CBR measurement result, thereby improving the communication performance of SL CA. At the same time, the CBR measurement configuration and the CBR measurement result include a resource pool identifier, and limiting that the resource pool identifiers corresponding to different carriers are different, so that the CBR measurement configuration and the CBR measurement result can clearly correspond to the resource pool under a certain carrier.

[0159] In another optional embodiment, the interaction process between terminal A and the network device, such as Figure 5 As shown, the following steps may be included:

[0160] S501, the network device sends side link indication information a to terminal A.

[0161] Before receiving the SL RRC reconfiguration completion message, terminal A can obtain the side link indication information a from the network device. The side link indication information a may include a carrier index. The carrier index is used to indicate the resources for SL communication, or in other words, the carrier index is used to indicate the carrier, which is the carrier corresponding to the resources indicated by the side link indication information a. The carrier index can be numbered based on the carriers included in the first carrier list. For example, assuming that the first carrier list includes M carriers, 0, 1, and M-1 can be used in the carrier index to indicate the M carriers included in the first carrier list. The first carrier list is a carrier list corresponding to single-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only an SL configuration corresponding to one carrier.

[0162] In some embodiments, in addition to the carrier index, the sidelink indication information a may also include a resource pool index or a resource pool identifier; the resource pool index or resource pool identifier is used to indicate a resource pool, and the resource pool is a resource pool corresponding to the resource indicated by the sidelink indication information a. The resource pool index or resource pool identifier may include an index or identifier of a resource pool corresponding to each carrier indicated by the carrier index in the sidelink indication information a.

[0163] The sidelink resource indication information a may be DCI or SL configured grant information. In one embodiment, the network device may send DCI to terminal A to indicate the SL resources scheduled by the network device for terminal A. In another embodiment, the network device may send SL configured grant information to terminal A to indicate the SL resources configured by the network device for terminal A.

[0164] S502, terminal A uses the resources indicated by the side link indication information a to perform SL communication.

[0165] The resource indicated by the sidelink indication information a refers to the carrier indicated by the carrier index of the sidelink indication information a, or the resource pool indicated by the resource pool index or resource pool identifier. Terminal A uses the resource indicated by the sidelink indication information a for SL communication or discovery.

[0166] The above process can be understood as that, before receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the first carrier list.

[0167] S503, terminal A receives the SL RRC reconfiguration completion message.

[0168] In some embodiments, when terminal A performs SL communication with terminal B, terminal A sends a SL RRC reconfiguration message to terminal B. After receiving the SL RRC reconfiguration message sent by terminal A, terminal B sends a SL RRC reconfiguration completion message to terminal A. The RRC reconfiguration completion message may be the first SL RRC reconfiguration completion message sent by terminal B to terminal A during the process of establishing a SL communication link between terminal A and terminal B. The SL RRC reconfiguration completion message may be a SL RRC reconfiguration completion message corresponding to an SLRRC reconfiguration message including SL carrier configuration.

[0169] S504, the network device sends side link indication information b to terminal A.

[0170] After receiving the SL RRC reconfiguration completion message, terminal A can obtain sidelink indication information b from the network device. The sidelink resource indication information b can be DCI or SL configured grant information. The sidelink indication information b may include a carrier index. The carrier index is used to indicate the resources for SL communication, or in other words, the carrier index is used to indicate the carrier, which is the carrier corresponding to the resources indicated by the sidelink indication information b. The carrier index can be numbered based on the carriers included in the first resource set. Among them, the first resource set may include a first carrier list and a second carrier list.

[0171] In an optional embodiment, the carrier index in the sidelink indication information b may be numbered based on the carriers included in the first carrier list and the carriers included in the second carrier list. For example, assuming that the first carrier list includes carrier 1 and the second carrier list includes carrier 2, carrier 3 and carrier 4, the carrier index in the sidelink indication information b may use 0, 1, 2, 3 to indicate carrier 1, carrier 2, carrier 3 and carrier 4 respectively. For another example, assuming that the first carrier list includes M carriers and the second carrier list includes N carriers, the carrier index in the sidelink indication information b may use 0, 1, M-1 to indicate the M carriers included in the first carrier list, and use M, M+1, M+N-1 to indicate the N carriers included in the second carrier list.

[0172] In another optional embodiment, the carrier index in the sidelink indication information b may also be numbered based on some carriers included in the first carrier list and the second carrier list. For example, the carrier index in the sidelink indication information b may be numbered based on all carriers included in the first carrier list, or the carrier index in the sidelink indication information b may be numbered based on all carriers included in the second carrier list, or the carrier index in the sidelink indication information b may be numbered based on some carriers in the first carrier list, or the carrier index in the sidelink indication information b may be numbered based on some carriers in the second carrier list, or the carrier index in the sidelink indication information b may be numbered based on some carriers in the first carrier list and some carriers in the second carrier list.

[0173] The above-mentioned first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list supporting multi-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17, and the second carrier list may be a carrier list corresponding to SL communication in R18 or R18+. Among them, R16 is the protocol of the 16th public version of the International Telecommunication Convention, R17 is the protocol of the 17th public version of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0174] The index of the resource pool or the identifier of the resource pool corresponding to the different carriers included in the first carrier list or the second carrier list may be the same. The index of the resource pool or the identifier of the resource pool corresponding to the first carrier included in the first carrier list and the index of the resource pool or the identifier of the resource pool corresponding to the second carrier included in the second carrier list may be the same. That is, the index of the resource pool or the identifier of the resource pool corresponding to any two different carriers in the first resource set may be the same.

[0175] In some embodiments, in addition to the carrier index, the sidelink indication information b may also include a resource pool index or a resource pool identifier; the resource pool index or resource pool identifier is used to indicate a resource pool, and the resource pool is a resource pool corresponding to the resource indicated by the sidelink indication information b. The resource pool index or resource pool identifier may include an index or identifier of a resource pool corresponding to each carrier indicated by the carrier index in the sidelink indication information b.

[0176] S505, terminal A uses the resources indicated by the side link indication information b to perform SL communication.

[0177] The resource indicated by the sidelink indication information b refers to the carrier indicated by the carrier index of the sidelink indication information b, or the resource pool indicated by the resource pool index or resource pool identifier. Terminal A uses the resource indicated by the sidelink indication information b for SL communication or discovery.

[0178] The above process can be understood as, after receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the first carrier list and the second carrier list.

[0179] In the above embodiment, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the carriers included in the first carrier list and the second carrier list to process the sidelink resources obtained from the network device, the terminal can reasonably use the two carrier lists and reasonably process the sidelink resources obtained from the network device, thereby improving the communication performance of SL CA. At the same time, the sidelink indication information includes a carrier index, which can make the index or resource pool identifier of the resource pool corresponding to different carriers the same, and reuse the resource pool index or resource pool identifier definition.

[0180] In another optional embodiment, the interaction process between terminal A and the network device, such as Figure 6 As shown, the following steps may be included:

[0181] S601, the network device sends sidelink indication information c to terminal A.

[0182] Before receiving the SL RRC reconfiguration completion message, terminal A can obtain the side link indication information c from the network device. The side link indication information c may include a resource pool index or a resource pool identifier. In some embodiments, the side link indication information c may include a resource pool index; in other embodiments, the side link indication information c may include a resource pool identifier. Among them, the resource pool index or resource pool identifier is used to indicate the resources for SL communication, or in other words, the resource pool index or resource pool identifier is used to indicate the resource pool, which is the resource pool corresponding to the resources indicated by the side link resource indication information c. The resource pool index is numbered based on the resource pool corresponding to the carrier included in the first carrier list, and the resource pool identifier includes the identifier of the resource pool corresponding to the carrier included in the first carrier list. The first carrier list is a carrier list corresponding to single-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0183] The sidelink resource indication information c may be DCI or SL configured grant information. In one embodiment, the network device may send DCI to terminal A to indicate the SL resources scheduled by the network device for terminal A. In another embodiment, the network device may send SL configured grant information to terminal A to indicate the SL resources configured by the network device for terminal A.

[0184] S602, terminal A uses the resources indicated by the side link indication information c to perform SL communication.

[0185] The resource indicated by the sidelink indication information c refers to the resource pool indicated by the resource pool index or resource pool identifier in the sidelink indication information c. Terminal A uses the resource indicated by the sidelink indication information c to perform SL communication or discovery.

[0186] The above process can be understood as that, before receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the first carrier list.

[0187] S603, terminal A receives the SL RRC reconfiguration completion message.

[0188] In some embodiments, when terminal A performs SL communication with terminal B, terminal A sends a SL RRC reconfiguration message to terminal B. After receiving the SL RRC reconfiguration message sent by terminal A, terminal B sends a SL RRC reconfiguration completion message to terminal A. The RRC reconfiguration completion message may be the first SL RRC reconfiguration completion message sent by terminal B to terminal A during the process of establishing a SL communication link between terminal A and terminal B. The SL RRC reconfiguration completion message may be a SL RRC reconfiguration completion message corresponding to an SLRRC reconfiguration message including SL carrier configuration.

[0189] S604, the network device sends side link indication information d to terminal A.

[0190] After receiving the SL RRC reconfiguration completion message, terminal A can obtain the side link indication information d from the network device. Resource pool index or resource pool identifier. In some embodiments, the side link indication information d may include a resource pool index; in other embodiments, the side link indication information d may include a resource pool identifier. The resource pool index or resource pool identifier is used to indicate the resources for SL communication, or in other words, the resource pool index or resource pool identifier is used to indicate the resource pool, which is the resource pool corresponding to the resources indicated by the side link resource indication information d. The resource pool index in the side link indication information d is numbered based on the resource pool corresponding to the carrier included in the first resource set, and the resource pool identifier in the side link indication information d includes the identifier of the resource pool corresponding to the carrier included in the first resource set. The first resource set may include a first carrier list and a second carrier list.

[0191] In an optional embodiment, the resource pool index in the side link indication information d can be numbered based on the resource pool corresponding to the carrier included in the first carrier list and the resource pool corresponding to the carrier included in the second carrier list. Among them, a carrier configuration may include the configuration of one or more resource pools. Exemplarily, the side link resource indication information d may be DCI or SL configured grant information. In one embodiment, the network device may send DCI to terminal A to indicate the SL resources scheduled by the network device for terminal A. The DCI may include a resource pool index, and the resource pool index is used to indicate which resource pool the SL resources scheduled by the network device for terminal A are SL resources on. The resource pool index is numbered sequentially from 0 according to the resource pools corresponding to the carriers included in the configured first carrier list and the second carrier list. For example, 0, 1, ..., X-1 respectively indicate the X resource pools corresponding to the carriers included in the first carrier list, and X, X+1, ..., X+Y-1 respectively indicate the Y resource pools corresponding to the carriers included in the second carrier list. In another embodiment, the network device may send SL configured grant information to terminal A to indicate the SL resources configured by the network device for terminal A. The SL configured grant information includes a resource pool identifier, which is used to indicate the resource pool on which the scheduled SL resource belongs. The resource pool identifier is an identifier of a resource pool corresponding to the carriers included in the first carrier list and the second carrier list.

[0192] In another optional embodiment, the resource pool index in the sidelink indication information d may also be numbered based on the resource pools corresponding to some carriers included in the first carrier list and the second carrier list. For example, the resource pool index in the sidelink indication information d may be numbered based on the resource pools corresponding to all carriers included in the first carrier list, or the resource pool index in the sidelink indication information d may be numbered based on the resource pools corresponding to all carriers included in the second carrier list, or the resource pool index in the sidelink indication information d may be numbered based on the resource pools corresponding to some carriers in the first carrier list, or the resource pool index in the sidelink indication information d may be numbered based on the resource pools corresponding to some carriers in the second carrier list, or the resource pool index in the sidelink indication information d may be numbered based on the resource pools corresponding to some carriers in the first carrier list and the resource pools corresponding to some carriers in the second carrier list.

[0193] The above-mentioned first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list supporting multi-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17, and the second carrier list may be a carrier list corresponding to SL communication in R18 or R18+. Among them, R16 is the protocol of the 16th public version of the International Telecommunication Convention, R17 is the protocol of the 17th public version of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0194] The indexes of the resource pools or the identifiers of the resource pools corresponding to different carriers included in the first carrier list or the second carrier list are different; in other words, the indexes of the resource pools or the identifiers of the resource pools corresponding to any carrier included in the first carrier list and any carrier included in the second carrier list are different; or, the indexes of the resource pools or the identifiers of the resource pools corresponding to any two carriers included in the second carrier list are different.

[0195] S605, terminal A uses the resources indicated by the side link indication information d to perform SL communication.

[0196] The resource indicated by the sidelink indication information d refers to the resource pool indicated by the resource pool index or resource pool identifier in the sidelink indication information d. Terminal A uses the resource indicated by the sidelink indication information d to perform SL communication or discovery.

[0197] The above process can be understood as, after receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the first carrier list and the second carrier list.

[0198] In the above embodiment, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the resource pool corresponding to the carriers included in the first carrier list and the second carrier list to process the sidelink resources obtained from the base station, the terminal can reasonably use the two carrier lists and reasonably process the sidelink resources obtained from the network device, thereby improving the communication performance of SL CA. At the same time, the sidelink resource indication information includes a resource pool index or a resource pool identifier, and limiting that the resource pool indexes or resource pool identifiers corresponding to different carriers are different, so that the sidelink resource indication information can clearly correspond to the resources of the resource pool under a certain carrier.

[0199] In some other embodiments, the second carrier list includes carriers in the first carrier list, and the terminal can refer to Figure 7 The communication method shown is executed, Figure 7 The communication method shown can be executed by a sending end (hereinafter referred to as terminal A). Figure 7 As shown, the communication method may include the following steps:

[0200] S701: Acquire a first carrier list and a second carrier list.

[0201] The second carrier list includes carriers in the first carrier list, that is, there is an overlap or intersection between the carriers included in the second carrier list and the carriers included in the first carrier list.

[0202] Exemplarily, terminal A may obtain a first carrier list and a second carrier list through specified information. The specified message is any one of the following messages: RRC dedicated signaling, system information block (SIB) message, pre-configuration message. The RRC dedicated signaling may include but is not limited to RRC configuration information, RRC reconfiguration information, etc. In some embodiments, the terminal may obtain a first carrier list through a first specified information, wherein the first specified message may be any one of the following messages: RRC configuration information, RRC reconfiguration information, SIB message, pre-configuration message. The terminal may obtain a second carrier list through a second specified information, wherein the second specified message may be any one of the following messages: RRC configuration information, RRC reconfiguration information, SIB message, pre-configuration message.

[0203] The first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list corresponding to multi-carrier SL communication; or, the first carrier list is a carrier list corresponding to SL communication in R16 or R17, and the second carrier list is a carrier list corresponding to SL communication in R18 or R18+. R16 is the 16th public version of the protocol of the International Telecommunication Convention, R17 is the 17th public version of the protocol of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0204] S702: Perform SL communication based on the first carrier list or the second carrier list.

[0205] In some embodiments, before receiving the SL RRC reconfiguration completion message sent by terminal B, or before the carrier configuration signaling is completed, terminal A can perform SL communication based on the first carrier list. Exemplarily, terminal A can use the carriers included in the first carrier list to perform SL communication; or terminal A uses the resource pool corresponding to the carriers included in the first carrier list to perform SL communication.

[0206] After receiving the SL RRC reconfiguration completion message sent by terminal B, or after the carrier configuration signaling is completed, terminal A can perform SL communication based on the second carrier list. Exemplarily, terminal A can use the carriers included in the second carrier list for SL communication; or, terminal A can use the resource pools corresponding to the carriers included in the second carrier list for SL communication. For example, assuming that the second carrier list includes carrier 1, carrier 2, and carrier 3, terminal A can use carrier 1, carrier 2, and carrier 3 for SL communication, that is, terminal A can select SL resources for data transmission from carrier 1, carrier 2, and carrier 3; or, terminal A can use the resource pool corresponding to carrier 1, the resource pool corresponding to carrier 2, the resource pool corresponding to carrier 3, and the resource pool corresponding to carrier 4 for SL communication, that is, terminal A can select SL resources for data transmission from the resource pool corresponding to carrier 1, the resource pool corresponding to carrier 2, and the resource pool corresponding to carrier 3. Among them, the RRC reconfiguration completion message can be the first SL RRC reconfiguration completion message sent by terminal B to terminal A after terminal A establishes an SL communication link with terminal B. The SL RRC reconfiguration complete message may be a SL RRC reconfiguration complete message corresponding to the SL RRC reconfiguration message including the SL carrier configuration.

[0207] In the above embodiment, by limiting that after receiving the SL RRC reconfiguration completion message, according to the inclusion relationship between the first carrier list and the second carrier list, when the second carrier list includes the carriers in the first carrier list, the terminal performs SL communication based on the second carrier list, so that the terminal can reasonably use the two carrier lists, and the communication performance of SL CA can be improved.

[0208] In some embodiments, terminal A may receive a CBR measurement configuration from a network device, and the CBR measurement configuration may include a carrier index and a resource pool identifier, which is used to indicate a resource pool corresponding to a specified carrier. Among them, the resource pool identifier is used to indicate the resource pool corresponding to the CBR measurement configuration. The carrier index is used to indicate a carrier, which is the carrier corresponding to the resource pool corresponding to the CBR measurement configuration. The carrier index can be numbered based on the carriers included in the first carrier list and / or the second carrier list, and the resource pool identifier may include the identifier of the resource pool corresponding to each carrier indicated by the above carrier index.

[0209] The above-mentioned first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list supporting multi-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17, and the second carrier list may be a carrier list corresponding to SL communication in R18 or R18+. Among them, R16 is the protocol of the 16th public version of the International Telecommunication Convention, R17 is the protocol of the 17th public version of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0210] The identifiers of the resource pools corresponding to different carriers included in the first carrier list or the second carrier list may be the same. The identifier of the resource pool corresponding to the first carrier included in the first carrier list and the identifier of the resource pool corresponding to the second carrier included in the second carrier list may be the same. That is to say, the identifiers of the resource pools corresponding to any two different carriers in the first carrier list and the second carrier list may be the same. Since the CBR measurement configuration indicates a resource pool corresponding to a specified carrier through a carrier index and a resource pool identifier, even if the identifiers of the resource pools corresponding to two different carriers are the same, the carrier index can be used to distinguish which carrier the resource pool indicated by the resource pool identifier corresponds to.

[0211] Terminal A may send a CBR measurement result to the network device based on the received CBR measurement configuration and the CBR measurement result. The CBR measurement result may include the carrier index and resource pool identifier included in the CBR measurement configuration.

[0212] In the above embodiment, the CBR measurement configuration and the CBR measurement result include the carrier index and the resource pool identifier, so that the resource pool identifiers corresponding to different carriers can be the same, and the current resource pool identifier definition can be reused.

[0213] In some other embodiments, terminal A may receive sidelink indication information from a network device, and the sidelink indication information may include a carrier index for indicating resources for SL communication. Terminal A may use the resources indicated by the sidelink indication information for SL communication. The carrier index is used to indicate a carrier, which is a carrier corresponding to the resources corresponding to the sidelink indication information. The carrier index may be numbered based on the carriers included in the first carrier list and / or the second carrier list.

[0214] In some optional embodiments, the sidelink indication information may include a resource pool index or a resource pool identifier in addition to the carrier index; the resource pool index or the resource pool identifier is used to indicate a resource pool, and the resource pool is a resource pool corresponding to the resource indicated by the sidelink indication information. The resource pool index or the resource pool identifier may include an index or identifier of a resource pool corresponding to each carrier indicated by the carrier index in the sidelink indication information a.

[0215] The above-mentioned first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list supporting multi-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17, and the second carrier list may be a carrier list corresponding to SL communication in R18 or R18+. Among them, R16 is the protocol of the 16th public version of the International Telecommunication Convention, R17 is the protocol of the 17th public version of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0216] The indexes of resource pools or identifiers of resource pools corresponding to different carriers included in the first carrier list or the second carrier list may be the same. The indexes of resource pools or identifiers of resource pools corresponding to the first carrier included in the first carrier list and the indexes of resource pools or identifiers of resource pools corresponding to the second carrier included in the second carrier list may be the same. That is, the indexes of resource pools or identifiers of resource pools corresponding to any two different carriers in the first carrier list and the second carrier list may be the same.

[0217] In the above embodiment, the sidelink indication information includes a carrier index, so that resource pool indexes or resource pool identifiers corresponding to different carriers can be the same, and the current resource pool index or resource pool identifier definition can be reused.

[0218] Several specific embodiments of the present application are described in detail below. In an optional embodiment, the interaction process between terminal A and the network device is as follows: Figure 8 As shown, the following steps may be included:

[0219] S801: The network device sends a CBR measurement configuration e to terminal A.

[0220] Before receiving the SL RRC reconfiguration completion message, terminal A can obtain CBR measurement configuration e from the network device. CBR measurement configuration e may include a carrier index and a resource pool identifier, which is used to indicate a resource pool corresponding to a specified carrier. The resource pool identifier is used to indicate the resource pool corresponding to the CBR measurement configuration. The carrier index is used to indicate a carrier, which is the carrier corresponding to the resource pool corresponding to the CBR measurement configuration e. The carrier index can be numbered based on the carriers included in the first carrier list; the resource pool identifier may include the identifier of the resource pool corresponding to each carrier indicated by the above carrier index. For example, assuming that the first carrier list includes M carriers, the carrier index in the CBR measurement configuration e can use 0, 1, M-1 to indicate the M carriers included in the first carrier list. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only one SL configuration corresponding to the carrier.

[0221] S802: Terminal A performs CBR measurement.

[0222] Terminal A can perform CBR measurements on each currently available SL resource to determine the CBR of each resource pool. For example, the SL resources currently available to terminal A include the resource pool corresponding to carrier 1, the resource pool corresponding to carrier 2, and the resource pool corresponding to carrier 3. Terminal A can perform CBR measurements to determine the CBR of the resource pool corresponding to carrier 1, the CBR of the resource pool corresponding to carrier 2, and the CBR of the resource pool corresponding to carrier 3, respectively.

[0223] In some embodiments, step S802 may be performed before step S801.

[0224] S803, terminal A sends the CBR measurement result e to the network device.

[0225] The CBR measurement result e may include the carrier index and resource pool identifier included in the CBR measurement configuration e. The carrier index may be numbered based on the carriers included in the first carrier list; the resource pool identifier may include the identifier of the resource pool corresponding to each carrier indicated by the above carrier index. For example, assuming that the CBR measurement configuration e includes the carrier index of carrier 1 and the identifier of the resource pool corresponding to carrier 1, the CBR measurement result e may include the carrier index of carrier 1 and the identifier of the resource pool corresponding to carrier 1.

[0226] The network device receives the CBR measurement result e sent by the terminal A, and schedules SL resources for the terminal A or provides SL resource configuration according to the CBR of the resource pool included in the CBR measurement result e.

[0227] The above process can be understood as that, before receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the first carrier list.

[0228] S804, terminal A receives the SL RRC reconfiguration completion message.

[0229] In some embodiments, when terminal A performs SL communication with terminal B, terminal A sends a SL RRC reconfiguration message to terminal B. After receiving the SL RRC reconfiguration message sent by terminal A, terminal B sends a SL RRC reconfiguration completion message to terminal A. The RRC reconfiguration completion message may be the first SL RRC reconfiguration completion message sent by terminal B to terminal A during the process of establishing a SL communication link between terminal A and terminal B. The SL RRC reconfiguration completion message may be a SL RRC reconfiguration completion message corresponding to an SLRRC reconfiguration message including SL carrier configuration.

[0230] S805: The network device sends a CBR measurement configuration f to terminal A.

[0231] After receiving the SL RRC reconfiguration completion message, terminal A can obtain CBR measurement configuration f from the network device. CBR measurement configuration f may include a carrier index and a resource pool identifier. The carrier index may be numbered based on the carriers included in the second resource set. The second resource set may include a second carrier list.

[0232] In an optional embodiment, the carrier index in the CBR measurement configuration f may be numbered based on the carriers included in the second carrier list; the resource pool identifier may include the identifier of the resource pool corresponding to each carrier indicated by the above carrier index. For example, assuming that the second carrier list includes carrier 1, carrier 2, and carrier 3, the carrier index in the CBR measurement configuration f may use 0, 1, and 2 to indicate carrier 1, carrier 2, and carrier 3, respectively, and the resource pool identifier in the CBR measurement configuration f may include the identifier of the resource pool corresponding to carrier 1, the identifier of the resource pool corresponding to carrier 2, and the identifier of the resource pool corresponding to carrier 3. For another example, assuming that the second carrier list includes N carriers, the carrier index in the CBR measurement configuration f may use 0, 1, and N-1 to indicate the N carriers included in the second carrier list.

[0233] In another optional embodiment, the carrier index in the CBR measurement configuration f may also be numbered based on some carriers included in the second carrier list.

[0234] The above-mentioned first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list supporting multi-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17, and the second carrier list may be a carrier list corresponding to SL communication in R18 or R18+. Among them, R16 is the protocol of the 16th public version of the International Telecommunication Convention, R17 is the protocol of the 17th public version of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0235] The identifiers of the resource pools corresponding to the different carriers included in the first carrier list or the second carrier list may be the same. The identifier of the resource pool corresponding to the first carrier included in the first carrier list and the identifier of the resource pool corresponding to the second carrier included in the second carrier list may be the same. That is to say, the identifiers of the resource pools corresponding to any two different carriers in the first resource set may be the same. Since the CBR measurement configuration f indicates a resource pool corresponding to a specified carrier through a carrier index and a resource pool identifier, even if the identifiers of the resource pools corresponding to two different carriers are the same, the carrier index can be used to distinguish which carrier the resource pool indicated by the resource pool identifier corresponds to.

[0236] S806: Terminal A performs CBR measurement.

[0237] Terminal A can perform CBR measurements on each currently available SL resource to determine the CBR of each resource pool. For example, the SL resources currently available to terminal A include the resource pool corresponding to carrier 1, the resource pool corresponding to carrier 2, and the resource pool corresponding to carrier 3. Terminal A can perform CBR measurements to determine the CBR of the resource pool corresponding to carrier 1, the CBR of the resource pool corresponding to carrier 2, and the CBR of the resource pool corresponding to carrier 3, respectively.

[0238] In some embodiments, step S806 may be performed before step S805.

[0239] S807, terminal A sends the CBR measurement result f to the network device.

[0240] The CBR measurement result f may include the carrier index and resource pool identifier included in the CBR measurement configuration f. The carrier index may be numbered based on the carriers included in the second resource set, and the resource pool identifier may include the identifier of the resource pool corresponding to each carrier indicated by the carrier index in the CBR measurement configuration f. For example, assuming that the CBR measurement configuration f includes carrier 1 and the identifier of the resource pool corresponding to carrier 1, and carrier 2 and the identifier of the resource pool corresponding to carrier 2, the CBR measurement result f may include carrier 1 and the identifier of the resource pool corresponding to carrier 1, and carrier 2 and the identifier of the resource pool corresponding to carrier 2.

[0241] For another example, assuming that the CBR measurement configuration f includes carrier 1 and the identifier of the resource pool corresponding to carrier 1, carrier 2 and the identifier of the resource pool corresponding to carrier 2, and carrier 3 and the identifier of the resource pool corresponding to carrier 3, then the CBR measurement result f may include carrier 1 and the identifier of the resource pool corresponding to carrier 1, carrier 2 and the identifier of the resource pool corresponding to carrier 2, and carrier 3 and the identifier of the resource pool corresponding to carrier 3.

[0242] The network device receives the CBR measurement result f sent by the terminal A, and schedules SL resources for the terminal A or provides SL resource configuration according to the CBR of the resource pool included in the CBR measurement result f.

[0243] The above process can be understood as, after receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the second carrier list.

[0244] In the above embodiment, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the carrier included in the second carrier list to receive the CBR measurement configuration and send the CBR measurement result to perform SL communication, the terminal can reasonably use the two carrier lists, reasonably process the CBR measurement configuration and send the CBR measurement result, thereby improving the communication performance of SL CA. At the same time, the CBR measurement configuration and the CBR measurement result include the carrier index, so that the resource pool identifiers corresponding to different carriers can be the same, and the current resource pool identifier definition can be reused.

[0245] In another optional embodiment, the interaction process between terminal A and the network device, such as Fig. 9 As shown, the following steps may be included:

[0246] S901: The network device sends a CBR measurement configuration g to terminal A.

[0247] Before receiving the SL RRC reconfiguration completion message, terminal A can obtain the CBR measurement configuration g from the network device. The CBR measurement configuration g may include a resource pool identifier. The resource pool identifier is used to indicate the resource pool corresponding to the CBR measurement configuration. The resource pool identifier includes an identifier of the resource pool corresponding to the carrier included in the first carrier list. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only an SL configuration corresponding to one carrier.

[0248] S902: Terminal A performs CBR measurement.

[0249] Terminal A can perform CBR measurements on each currently available SL resource to determine the CBR of each resource pool. For example, the SL resources currently available to terminal A include the resource pool corresponding to carrier 1, the resource pool corresponding to carrier 2, and the resource pool corresponding to carrier 3. Terminal A can perform CBR measurements to determine the CBR of the resource pool corresponding to carrier 1, the CBR of the resource pool corresponding to carrier 2, and the CBR of the resource pool corresponding to carrier 3, respectively.

[0250] In some embodiments, step S902 may be performed before step S901.

[0251] S903, terminal A sends the CBR measurement result g to the network device.

[0252] The CBR measurement result g may include the resource pool identifier included in the CBR measurement configuration g. The resource pool identifier includes the identifier of the resource pool corresponding to the carrier included in the first carrier list. For example, assuming that the CBR measurement configuration g includes the identifier of the resource pool corresponding to carrier 1, the CBR measurement result g may also include the identifier of the resource pool corresponding to carrier 1.

[0253] The network device receives the CBR measurement result g sent by the terminal A, and schedules SL resources for the terminal A or provides SL resource configuration according to the CBR of the resource pool included in the CBR measurement result g.

[0254] The above process can be understood as that, before receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the first carrier list.

[0255] S904, terminal A receives the SL RRC reconfiguration completion message.

[0256] In some embodiments, when terminal A performs SL communication with terminal B, terminal A sends a SL RRC reconfiguration message to terminal B. After receiving the SL RRC reconfiguration message sent by terminal A, terminal B sends a SL RRC reconfiguration completion message to terminal A. The RRC reconfiguration completion message may be the first SL RRC reconfiguration completion message sent by terminal B to terminal A during the process of establishing a SL communication link between terminal A and terminal B. The SL RRC reconfiguration completion message may be a SL RRC reconfiguration completion message corresponding to an SLRRC reconfiguration message including SL carrier configuration.

[0257] S905: The network device sends a CBR measurement configuration h to terminal A.

[0258] After receiving the SL RRC reconfiguration completion message, terminal A can obtain the CBR measurement configuration h from the network device. The CBR measurement configuration h may include a resource pool identifier. The resource pool identifier is used to indicate the resource pool corresponding to the CBR measurement configuration. The resource pool identifier includes an identifier of a resource pool corresponding to the carrier included in the second resource set, and the second resource set may include a second carrier list.

[0259] In an optional embodiment, the resource pool identifier in the CBR measurement configuration h may include an identifier of a resource pool corresponding to the carrier included in the second carrier list. For example, assuming that the second carrier list includes carrier 1, carrier 2, and carrier 3, the resource pool identifier in the CBR measurement configuration f may include an identifier of a resource pool corresponding to carrier 1, an identifier of a resource pool corresponding to carrier 2, and an identifier of a resource pool corresponding to carrier 3. Exemplarily, the resource pool identifiers in the CBR measurement configuration h may be numbered sequentially starting from 0 according to the resource pools corresponding to the carriers included in the second carrier list. For example, 0, 1, ..., Y-1 respectively indicate Y resource pools corresponding to the carriers included in the second carrier list. In another optional embodiment, the resource pool identifier in the CBR measurement configuration d may include identifiers of resource pools corresponding to some carriers in the second carrier list.

[0260] The above-mentioned first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list supporting multi-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17, and the second carrier list may be a carrier list corresponding to SL communication in R18 or R18+. Among them, R16 is the protocol of the 16th public version of the International Telecommunication Convention, R17 is the protocol of the 17th public version of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0261] The identifiers of the resource pools corresponding to different carriers included in the first carrier list or the second carrier list are different; in other words, the identifiers of the resource pools corresponding to any carrier included in the first carrier list and any carrier included in the second carrier list are different; or, the identifiers of the resource pools corresponding to any two carriers included in the second carrier list are different.

[0262] S906: Terminal A performs CBR measurement.

[0263] Terminal A can perform CBR measurements on each currently available SL resource to determine the CBR of each resource pool. For example, the SL resources currently available to terminal A include the resource pool corresponding to carrier 1, the resource pool corresponding to carrier 2, and the resource pool corresponding to carrier 3. Terminal A can perform CBR measurements to determine the CBR of the resource pool corresponding to carrier 1, the CBR of the resource pool corresponding to carrier 2, and the CBR of the resource pool corresponding to carrier 3, respectively.

[0264] In some embodiments, step S906 may be performed before step S905.

[0265] S907, terminal A sends the CBR measurement result h to the network device.

[0266] The CBR measurement result h may include the resource pool identifier included in the CBR measurement configuration h. The resource pool identifier includes the identifier of the resource pool corresponding to the carrier included in the second resource set. For example, assuming that the CBR measurement configuration h includes the identifier of the resource pool corresponding to carrier 1 and the identifier of the resource pool corresponding to carrier 2, the CBR measurement result h may also include the identifier of the resource pool corresponding to carrier 1 and the identifier of the resource pool corresponding to carrier 2.

[0267] For another example, assuming that the CBR measurement configuration h includes the identifier of the resource pool corresponding to carrier 1, the identifier of the resource pool corresponding to carrier 2, and the identifier of the resource pool corresponding to carrier 3, then the CBR measurement result h may include the identifier of the resource pool corresponding to carrier 1, the identifier of the resource pool corresponding to carrier 2, and the identifier of the resource pool corresponding to carrier 3.

[0268] The network device receives the CBR measurement result h sent by the terminal A, and schedules SL resources for the terminal A or provides SL resource configuration according to the CBR of the resource pool included in the CBR measurement result h.

[0269] In the above embodiment, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the resource pool included in the second carrier list to receive the CBR measurement configuration and send the CBR measurement result to perform SL communication, the terminal can reasonably use the two carrier lists, reasonably process the CBR measurement configuration and send the CBR measurement result, thereby improving the communication performance of SL CA. At the same time, the CBR measurement configuration and the CBR measurement result include a resource pool identifier, and limiting that the resource pool identifiers corresponding to different carriers are different, so that the CBR measurement configuration and the CBR measurement result can clearly correspond to the resource pool under a certain carrier.

[0270] In another optional embodiment, the interaction process between terminal A and the network device, such as Fig.10 As shown, the following steps may be included:

[0271] S1001, the network device sends side link indication information e to terminal A.

[0272] Before receiving the SL RRC reconfiguration completion message, terminal A can obtain the side link indication information e from the network device. The side link resource indication information e can be DCI or SL configured grant information. The side link indication information e can include a carrier index. The carrier index is used to indicate the resources for SL communication, or in other words, the carrier index is used to indicate the carrier, which is the carrier corresponding to the resources indicated by the side link indication information e. The carrier index can be numbered based on the carriers included in the first carrier list. For example, assuming that the first carrier list includes M carriers, 0, 1, and M-1 can be used in the carrier index to indicate the M carriers included in the first carrier list. The first carrier list is a carrier list corresponding to single-carrier SL communication. Exemplarily, the first carrier list can be a carrier list corresponding to SL communication in R16 / R17. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only an SL configuration corresponding to one carrier.

[0273] In some embodiments, the sidelink indication information e may include a resource pool index or a resource pool identifier in addition to the carrier index; the resource pool index or resource pool identifier is used to indicate a resource pool, which is a resource pool corresponding to the resource indicated by the sidelink indication information e. The resource pool index or resource pool identifier may include an index or identifier of a resource pool corresponding to each carrier indicated by the carrier index in the sidelink indication information e.

[0274] S1002, terminal A uses the resources indicated by the side link indication information e to perform SL communication.

[0275] The resource indicated by the sidelink indication information e refers to the carrier indicated by the carrier index of the sidelink indication information e, or the resource pool indicated by the resource pool index or resource pool identifier. Terminal A uses the resource indicated by the sidelink indication information e for SL communication or discovery.

[0276] The above process can be understood as that, before receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the first carrier list.

[0277] S1003, terminal A receives the SL RRC reconfiguration completion message.

[0278] In some embodiments, when terminal A performs SL communication with terminal B, terminal A sends a SL RRC reconfiguration message to terminal B. After receiving the SL RRC reconfiguration message sent by terminal A, terminal B sends a SL RRC reconfiguration completion message to terminal A. The RRC reconfiguration completion message may be the first SL RRC reconfiguration completion message sent by terminal B to terminal A during the process of establishing a SL communication link between terminal A and terminal B. The SL RRC reconfiguration completion message may be a SL RRC reconfiguration completion message corresponding to an SLRRC reconfiguration message including SL carrier configuration.

[0279] S1004, the network device sends side link indication information f to terminal A.

[0280] After receiving the SL RRC reconfiguration completion message, terminal A can obtain sidelink indication information f from the network device. The sidelink resource indication information f can be DCI or SL configured grant information. The sidelink indication information f may include a carrier index. The carrier index is used to indicate the resources for SL communication, or in other words, the carrier index is used to indicate the carrier, which is the carrier corresponding to the resources indicated by the sidelink indication information b. The carrier index can be numbered based on the carriers included in the second resource set. Among them, the second resource set may include a second carrier list.

[0281] In an optional embodiment, the carrier index in the sidelink indication information f may be numbered based on the carriers included in the second carrier list. For example, assuming that the second carrier list includes carrier 1, carrier 2, and carrier 3, the carrier index in the sidelink indication information f may use 0, 1, and 2 to indicate carrier 1, carrier 2, and carrier 3, respectively. For another example, assuming that the second carrier list includes N carriers, the carrier index in the sidelink indication information f may use 0, 1, and N-1 to indicate the N carriers included in the second carrier list.

[0282] In another optional embodiment, the carrier index in the sidelink indication information f may also be numbered based on some carriers included in the second carrier list.

[0283] The above-mentioned first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list supporting multi-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17, and the second carrier list may be a carrier list corresponding to SL communication in R18 or R18+. Among them, R16 is the protocol of the 16th public version of the International Telecommunication Convention, R17 is the protocol of the 17th public version of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0284] The index of the resource pool or the identifier of the resource pool corresponding to the different carriers included in the first carrier list or the second carrier list may be the same. The index of the resource pool or the identifier of the resource pool corresponding to the first carrier included in the first carrier list and the index of the resource pool or the identifier of the resource pool corresponding to the second carrier included in the second carrier list may be the same. That is, the index of the resource pool or the identifier of the resource pool corresponding to any two different carriers in the first resource set may be the same.

[0285] In some embodiments, the sidelink indication information f may include a resource pool index or a resource pool identifier in addition to the carrier index; the resource pool index or resource pool identifier is used to indicate a resource pool, which is a resource pool corresponding to the resource indicated by the sidelink indication information f. The resource pool index or resource pool identifier may include an index or identifier of a resource pool corresponding to each carrier indicated by the carrier index in the sidelink indication information f.

[0286] S1005, terminal A uses the resources indicated by the side link indication information f to perform SL communication.

[0287] The resource indicated by the sidelink indication information f refers to the carrier indicated by the carrier index of the sidelink indication information f, or the resource pool indicated by the resource pool index or resource pool identifier. Terminal A uses the resource indicated by the sidelink indication information f for SL communication or discovery.

[0288] The above process can be understood as, after receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the second carrier list.

[0289] In the above embodiment, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the carriers included in the second carrier list to process the sidelink resources obtained from the base station, the terminal can reasonably use the two carrier lists and reasonably process the sidelink resources obtained from the network device, thereby improving the communication performance of SL CA. At the same time, the sidelink indication information includes a carrier index, which can make the resource pool index or resource pool identifier corresponding to different carriers the same, and reuse the resource pool index or resource pool identifier definition.

[0290] In another optional embodiment, the interaction process between terminal A and the network device, such as Fig.11 As shown, the following steps may be included:

[0291] S1101, the network device sends side link indication information g to terminal A.

[0292] Before receiving the SL RRC reconfiguration completion message, terminal A may obtain the side link indication information g from the network device. The side link resource indication information g may be DCI or SL configured grant information. The side link indication information g may include a resource pool index or a resource pool identifier. In some embodiments, the side link indication information g may include a resource pool index; in other embodiments, the side link indication information g may include a resource pool identifier. The resource pool index or resource pool identifier is used to indicate the resources for SL communication, or in other words, the resource pool index or resource pool identifier is used to indicate the resource pool, which is the resource pool corresponding to the resources indicated by the first side link resource indication information. The resource pool index is numbered based on the resource pool corresponding to the carrier included in the first carrier list, and the resource pool identifier includes the identifier of the resource pool corresponding to the carrier included in the first carrier list. The first carrier list is a carrier list corresponding to single-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only one SL configuration corresponding to the carrier.

[0293] S1102, terminal A uses the resources indicated by the side link indication information g to perform SL communication.

[0294] The resource indicated by the side link indication information g refers to the resource pool indicated by the resource pool index or resource pool identifier in the side link indication information g. Terminal A uses the resource indicated by the side link indication information g for SL communication or discovery.

[0295] The above process can be understood as that, before receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the first carrier list.

[0296] S1103, terminal A receives the SL RRC reconfiguration completion message.

[0297] In some embodiments, when terminal A performs SL communication with terminal B, terminal A sends a SL RRC reconfiguration message to terminal B. After receiving the SL RRC reconfiguration message sent by terminal A, terminal B sends a SL RRC reconfiguration completion message to terminal A. The RRC reconfiguration completion message may be the first SL RRC reconfiguration completion message sent by terminal B to terminal A during the process of establishing a SL communication link between terminal A and terminal B. The SL RRC reconfiguration completion message may be a SL RRC reconfiguration completion message corresponding to an SLRRC reconfiguration message including SL carrier configuration.

[0298] S1104, the network device sends side link indication information h to terminal A.

[0299] After receiving the SL RRC reconfiguration completion message, terminal A can obtain the side link indication information h from the network device. Resource pool index or resource pool identifier. In some embodiments, the side link indication information h may include a resource pool index; in other embodiments, the side link indication information h may include a resource pool identifier. The resource pool index or resource pool identifier is used to indicate the resources for SL communication, or in other words, the resource pool index or resource pool identifier is used to indicate a resource pool, which is the resource pool corresponding to the resources indicated by the side link resource indication information h. The resource pool index in the side link indication information h is numbered based on the resource pool corresponding to the carrier included in the second resource set, and the resource pool identifier in the side link indication information h includes the identifier of the resource pool corresponding to the carrier included in the second resource set. The second resource set may include a second carrier list.

[0300] In an optional embodiment, the resource pool index in the sidelink indication information h may be numbered based on the resource pool corresponding to the carrier included in the second carrier list. In another optional embodiment, the resource pool index in the sidelink indication information h may also be numbered based on the resource pool corresponding to some of the carriers included in the second carrier list.

[0301] The above-mentioned first carrier list is a carrier list corresponding to single-carrier SL communication, and the second carrier list is a carrier list supporting multi-carrier SL communication. Exemplarily, the first carrier list may be a carrier list corresponding to SL communication in R16 / R17, and the second carrier list may be a carrier list corresponding to SL communication in R18 or R18+. Among them, R16 is the protocol of the 16th public version of the International Telecommunication Convention, R17 is the protocol of the 17th public version of the International Telecommunication Convention, R18 refers to the R18 protocol in the International Telecommunication Convention, R18+ refers to the R18+ protocol in the International Telecommunication Convention, and the R18+ protocol may be a protocol version after the R18 protocol. In some embodiments, the first carrier list may include only one carrier, or the first carrier list may include only the SL configuration corresponding to one carrier.

[0302] The indexes of the resource pools or the identifiers of the resource pools corresponding to different carriers included in the first carrier list or the second carrier list are different; in other words, the indexes of the resource pools or the identifiers of the resource pools corresponding to any carrier included in the first carrier list and any carrier included in the second carrier list are different; or, the indexes of the resource pools or the identifiers of the resource pools corresponding to any two carriers included in the second carrier list are different.

[0303] S1105, terminal A uses the resources indicated by the side link indication information h to perform SL communication.

[0304] The resource indicated by the sidelink indication information h refers to the resource pool indicated by the resource pool index or resource pool identifier in the sidelink indication information h. Terminal A uses the resource indicated by the sidelink indication information h for SL communication or discovery.

[0305] The above process can be understood as, after receiving the SL RRC reconfiguration completion message, terminal A performs SL communication based on the second carrier list.

[0306] In the above embodiment, by limiting that after receiving the SL RRC reconfiguration completion message, the terminal uses the resource pool corresponding to the carrier included in the second carrier list to process the sidelink resources obtained from the base station, the terminal can reasonably use the two carrier lists and reasonably process the sidelink resources obtained from the network device, thereby improving the communication performance of SL CA. At the same time, the sidelink resource indication information includes a resource pool index or a resource pool identifier, and limiting that the resource pool indexes or resource pool identifiers corresponding to different carriers are different, so that the sidelink resource indication information can clearly correspond to the resources of the resource pool under a certain carrier.

[0307] Based on the same design concept as the above method embodiment, the present application embodiment also provides a terminal. The terminal can be used to implement the functions of the above method embodiment, so the beneficial effects of the above method embodiment can be achieved. Fig.12 As shown, the terminal 1200 may include a message receiving module 1201 and a communication module 1202 .

[0308] Among them, the message receiving module 1201 can be used to receive the SL RRC reconfiguration completion message. The communication module 1202 can be used to determine whether to use the first resource set or the second resource set for side link SL communication according to the inclusion relationship between the first carrier list and the second carrier list. Among them, the first resource set is a resource set determined based on the first carrier list and the second carrier list, and the second resource set is a resource set determined based on the second carrier list. The first carrier list is a carrier list corresponding to single-carrier SL communication; the second carrier list is a carrier list corresponding to multi-carrier SL communication.

[0309] In some embodiments, the communication module 1202 can be specifically used to use a first resource set for SL communication when the second carrier list does not include carriers in the first carrier list; wherein the first resource set includes carriers included in the first carrier list and / or resource pools corresponding to the carriers, and carriers included in the second carrier list and / or resource pools corresponding to the carriers.

[0310] In one embodiment, the communication module 1202 can be specifically used to obtain a first channel busy ratio CBR measurement configuration from a network device. The first CBR measurement configuration includes a first carrier index and a first resource pool identifier. The first carrier index is numbered based on the carriers included in the first resource set; the first resource pool identifier includes an identifier of a resource pool corresponding to each carrier indicated by the first carrier index. A first CBR measurement result is sent to the network device, and the first CBR measurement result includes a first carrier index and a first resource pool identifier.

[0311] In another embodiment, the communication module 1202 can be specifically used to obtain a second CBR measurement configuration from a network device. The second CBR measurement configuration includes a first resource pool identifier; the first resource pool identifier includes an identifier of a resource pool corresponding to a carrier included in the first resource set. A second CBR measurement result is sent to the network device, and the second CBR measurement result includes the first resource pool identifier.

[0312] In one embodiment, the communication module 1202 can be specifically used to obtain first sidelink indication information from the network device, and use the resources indicated by the first sidelink indication information for SL communication. The first sidelink indication information includes a first carrier index, which is used to indicate the resources for SL communication; the first carrier index is numbered based on the carriers included in the first resource set.

[0313] In another embodiment, the communication module 1202 can be specifically used to obtain the second side link indication information from the network device, and use the resources indicated by the second side link indication information for SL communication. The second side link indication information includes a first resource pool index or a first resource pool identifier; the first resource pool index or the first resource pool identifier is used to indicate the resources for SL communication; the first resource pool index is numbered based on the resource pool corresponding to the carrier included in the first resource set; the first resource pool identifier includes an identifier of the resource pool corresponding to the carrier included in the first resource set.

[0314] In other embodiments, the communication module 1202 can be specifically used to use a second resource set for SL communication when the second carrier list includes carriers in the first carrier list; the second resource set includes the carriers included in the second carrier list and / or the resource pool corresponding to the carriers.

[0315] In one embodiment, the communication module 1202 can be specifically used to obtain a third CBR measurement configuration from the network device; the third CBR measurement configuration includes a second carrier index and a second resource pool identifier; the second carrier index is numbered based on the carrier included in the second resource set; the second resource pool identifier includes an identifier of a resource pool corresponding to each carrier indicated by the second carrier index. Send a third CBR measurement result to the network device, the third CBR measurement result including the second carrier index and the second resource pool identifier.

[0316] In another embodiment, the communication module 1202 can be specifically used to obtain a fourth CBR measurement configuration from a network device; the fourth CBR measurement configuration includes a second resource pool identifier; the second resource pool identifier includes an identifier of a resource pool corresponding to a carrier included in the second resource set. Send a fourth CBR measurement result to the network device, wherein the fourth CBR measurement result includes the second resource pool identifier.

[0317] In one embodiment, the communication module 1202 can be specifically used to obtain third side link indication information from a network device, and use the resources indicated by the third side link indication information for SL communication; the third side link indication information includes a second carrier index, and the second carrier index is used to indicate the resources for SL communication; the second carrier index is numbered based on the carrier included in the second resource set.

[0318] In another embodiment, the communication module 1202 can be specifically used to obtain fourth side link indication information from a network device, and use the resources indicated by the fourth side link indication information for SL communication; the fourth side link indication information includes a second resource pool index or a second resource pool identifier; the second resource pool index or the second resource pool identifier is used to indicate the resources for SL communication; the second resource pool index is numbered based on the resource pool corresponding to the carrier included in the second resource set; the second resource pool identifier includes the identifier of the resource pool corresponding to the carrier included in the second resource set.

[0319] Each functional module in the embodiment of the present application can be integrated into one processor, or each module can exist physically separately, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional units.

[0320] Based on the same design concept as the above method embodiment, the present application embodiment also provides a terminal. Fig.13 As shown, the terminal 1300 may include a receiving module 1301 and a sending module 1302. The receiving module 1301 may be used to obtain a channel busy ratio CBR measurement configuration from a network device; the CBR measurement configuration includes a carrier index and a resource pool identifier; the carrier index is used to indicate a target carrier, and the resource pool identifier is used to indicate a target resource pool in a resource pool corresponding to the target carrier. The sending module 1302 may be used to send a CBR measurement result to a network device, and the CBR measurement result includes the above-mentioned carrier index and the above-mentioned resource pool identifier.

[0321] In some embodiments, the identifiers of the resource pools corresponding to the first carrier and the second carrier are the same, wherein the first carrier is any carrier in the first carrier list, and the second carrier is any carrier in the second carrier list; or, the first carrier and the second carrier are any two carriers in the second carrier list.

[0322] Each functional module in the embodiment of the present application can be integrated into one processor, or each module can exist physically separately, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional units.

[0323] Based on the same design concept as the above method embodiment, the present application embodiment also provides a terminal. Fig.14As shown, the terminal 1400 may include an information acquisition module 1401 and a communication module 1402. The information acquisition module 1401 may be used to acquire sidelink indication information from a network device, wherein the sidelink indication information includes a carrier index, and the carrier index is used to indicate resources for SL communication. The communication module 1402 may be used to perform SL communication using the resources indicated by the sidelink indication information.

[0324] In some embodiments, the identifiers of the resource pools corresponding to the first carrier and the second carrier are the same, wherein the first carrier is any carrier in the first carrier list, and the second carrier is any carrier in the second carrier list; or, the first carrier and the second carrier are any two carriers in the second carrier list.

[0325] Each functional module in the embodiment of the present application can be integrated into one processor, or each module can exist physically separately, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional units.

[0326] Based on the same technical concept as the above method embodiment, a terminal is also provided in the embodiment of the present application. The terminal can be Figure 1 The terminal A shown in FIG. 1 can be used to implement the functions of the above method embodiment, and thus can achieve the beneficial effects of the above method embodiment.

[0327] In some embodiments, the structure of the terminal 1500 can be as follows Fig.15 As shown, it includes a processor 1501 and a memory 1502 connected to the processor 1501. The processor 1501 and the memory 1502 can be connected to each other through a bus. The processor 1501 can be a general-purpose processor, such as a microprocessor, or other conventional processors. The bus can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc.

[0328] Among them, the memory 1502 can be used to store software programs and modules, and the processor 1501 executes various functional applications and data processing of the terminal 1500 by running the software programs and modules stored in the memory 1502, such as the communication method provided in the embodiment of the present application.

[0329] The memory 1502 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, at least one application program, etc.; the data storage area may be used to store user data, etc. In addition, the memory 1502 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0330] The processor 1501 in the terminal 1500 is used to run the computer instructions or programs stored in the memory 1502 to perform the functions of any of the above method embodiments.

[0331] In some embodiments, the processor 1501 may include one or more processing units, and different processing units may be independent devices or integrated into one or more processors. The processor 1501 may also include a controller, which may generate an operation control signal according to the instruction operation code and the timing signal to complete the control of fetching and executing instructions.

[0332] In one embodiment, the terminal 1500 may further include a communication module, and the communication module is used to communicate with other devices in the network.

[0333] It is to be understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the network device. In other embodiments of the present application, the chip may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0334] Based on the same technical concept as the above method embodiment, the present application embodiment also provides a communication system. The communication system can be Figure 1 In the communication system shown in , the communication system may include two terminals for SL communication. In some embodiments, the communication system may also include a network device, such as Figure 1 The network device 100 in.

[0335] The present application also provides a computer program product, which includes computer executable instructions. In one embodiment, the computer executable instructions are used to enable a computer to execute the functions of the above method embodiment.

[0336] The computer executable instructions may be stored in a computer readable storage medium. The present application also provides a computer readable storage medium, wherein the computer readable storage medium stores the executable instructions. In one embodiment, the computer executable instructions are used to enable a computer to execute the functions in the above method embodiment.

[0337] The computer-readable storage medium provided in the embodiments of the present application may be a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of computer-readable storage medium known in the art.

[0338] Computer executable instructions may be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium. For example, the computer program or instructions may be transferred from one website, computer, server or data center to another website, computer, server or data center by wired or wireless means. The computer readable storage medium may be any available medium that can be accessed by a computer 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 magnetic tape; it may also be an optical medium, such as a digital video disc (DVD); it may also be a semiconductor medium, such as a solid state drive.

[0339] In each embodiment of the present application, if there is no special explanation and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships. In addition, the terms "including" and "having" and any variation thereof are intended to cover non-exclusive inclusions, for example, including a series of steps or units. Methods, systems, products or devices are not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0340] Although the present application has been described in conjunction with specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, the present specification and the accompanying drawings are merely exemplary illustrations of the schemes defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application.

[0341] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A communication method, characterized in that: The method comprises: Receiving a sidelink radio resource control SL RRC reconfiguration completion message; According to the inclusion relationship between the first carrier list and the second carrier list, it is determined whether to use the first resource set or the second resource set for side link SL communication; the first resource set is a resource set determined based on the first carrier list and the second carrier list; the second resource set is a resource set determined based on the second carrier list.

2. The method according to claim 1, characterized in that The first carrier list is a carrier list corresponding to single-carrier SL communication; the second carrier list is a carrier list corresponding to multi-carrier SL communication.

3. The method according to claim 1 or 2, characterized in that: The determining, according to the inclusion relationship between the first carrier list and the second carrier list, to use the first resource set or the second resource set for sidelink SL communication includes: If the second carrier list does not include the carriers in the first carrier list, a first resource set is used for SL communication; the first resource set includes the carriers included in the first carrier list and / or the resource pools corresponding to the carriers, and the carriers included in the second carrier list and / or the resource pools corresponding to the carriers.

4. The method according to claim 3, characterized in that The adopting the first resource set to perform SL communication includes: Acquire a first channel busy ratio CBR measurement configuration from a network device; the first CBR measurement configuration includes a first carrier index and a first resource pool identifier; the first carrier index is numbered based on the carriers included in the first resource set; the first resource pool identifier includes an identifier of a resource pool corresponding to each carrier indicated by the first carrier index; A first CBR measurement result is sent to the network device, where the first CBR measurement result includes the first carrier index and the first resource pool identifier.

5. The method according to claim 3, characterized in that: The adopting the first resource set to perform SL communication includes: Acquire a second CBR measurement configuration from a network device; the second CBR measurement configuration includes a first resource pool identifier; the first resource pool identifier includes an identifier of a resource pool corresponding to a carrier included in the first resource set; A second CBR measurement result is sent to the network device, where the second CBR measurement result includes the first resource pool identifier.

6. The method according to claim 3, characterized in that The adopting the first resource set to perform SL communication includes: Acquire first sidelink indication information from a network device; the first sidelink indication information includes a first carrier index, the first carrier index is used to indicate a resource for SL communication; the first carrier index is numbered based on the carrier included in the first resource set; The resources indicated by the first sidelink indication information are used for SL communication.

7. The method according to claim 3, characterized in that The adopting the first resource set to perform SL communication includes: Acquire second sidelink indication information from a network device; the second sidelink indication information includes a first resource pool index or a first resource pool identifier; the first resource pool index or the first resource pool identifier is used to indicate a resource for SL communication; the first resource pool index is numbered based on a resource pool corresponding to a carrier included in the first resource set; the first resource pool identifier includes an identifier of a resource pool corresponding to a carrier included in the first resource set; The resources indicated by the second sidelink indication information are used for SL communication.

8. The method according to claim 1 or 2, characterized in that: The determining, according to the inclusion relationship between the first carrier list and the second carrier list, to use the first resource set or the second resource set for sidelink SL communication includes: If the second carrier list includes carriers in the first carrier list, a second resource set is used for SL communication; the second resource set includes the carriers included in the second carrier list and / or the resource pools corresponding to the carriers.

9. The method according to claim 8, characterized in that The adopting the second resource set to perform SL communication includes: Acquire a third CBR measurement configuration from the network device; the third CBR measurement configuration includes a second carrier index and a second resource pool identifier; the second carrier index is numbered based on the carrier included in the second resource set; the second resource pool identifier includes an identifier of a resource pool corresponding to each carrier indicated by the second carrier index; A third CBR measurement result is sent to the network device, where the third CBR measurement result includes the second carrier index and the second resource pool identifier.

10. The method according to claim 8, characterized in that The adopting the second resource set to perform SL communication includes: Acquire a fourth CBR measurement configuration from the network device; the fourth CBR measurement configuration includes a second resource pool identifier; the second resource pool identifier includes an identifier of a resource pool corresponding to a carrier included in the second resource set; Sending a fourth CBR measurement result to the network device, where the fourth CBR measurement result includes the second resource pool identifier.

11. The method according to claim 8, characterized in that The adopting the second resource set to perform SL communication includes: Acquire third sidelink indication information from the network device; the third sidelink indication information includes a second carrier index, the second carrier index is used to indicate a resource for SL communication; the second carrier index is numbered based on the carrier included in the second resource set; The resources indicated by the third sidelink indication information are used for SL communication.

12. The method according to claim 8, characterized in that The adopting the second resource set to perform SL communication includes: Acquire fourth sidelink indication information from the network device; the fourth sidelink indication information includes a second resource pool index or a second resource pool identifier; the second resource pool index or the second resource pool identifier is used to indicate a resource for SL communication; the second resource pool index is numbered based on the resource pool corresponding to the carrier included in the second resource set; the second resource pool identifier includes an identifier of the resource pool corresponding to the carrier included in the second resource set; The resources indicated by the fourth sidelink indication information are used for SL communication.

13. The method according to claim 4, 6, 9 or 11, characterized in that The identifiers of the resource pools corresponding to the first carrier and the second carrier are the same; The first carrier is any carrier in the first carrier list, and the second carrier is any carrier in the second carrier list; or, the first carrier and the second carrier are any two carriers in the second carrier list.

14. The method according to claim 5, 7, 10 or 12, characterized in that The carriers included in the first carrier list and the carriers included in the second carrier list have corresponding resource pool identifiers different from each other; or any two carriers included in the second carrier list have corresponding resource pool identifiers different from each other.

15. The method according to any one of claims 1 to 14, characterized in that: Before receiving the side link radio resource control SL RRC reconfiguration completion message, the method further includes: The first carrier list and the second carrier list are obtained through a designated message; the designated message is any one of the following messages: radio resource control RRC configuration information, RRC reconfiguration information, system message block SIB message, pre-configuration message.

16. A terminal, characterized in that: The terminal comprises a module for executing the method according to any one of claims 1 to 15.

17. A terminal, characterized in that: The terminal includes a memory and a processor, wherein the memory stores a computer program; the processor is configured to execute the computer program stored in the memory to implement the method according to any one of claims 1 to 15.

18. A computer-readable storage medium, characterized in that: Computer executable instructions are stored, and the computer executable instructions are used to make a computer execute the method according to any one of claims 1 to 15.

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