Wireless communication method and device, and terminal equipment

Abstract

The embodiment of the invention provides a wireless communication method and device and terminal equipment, and the method comprises the steps: a first terminal transmits a first message or a first report to network equipment after receiving the first message transmitted by a second terminal; the first terminal receives first indication information sent by the network device, wherein the first indication information is used for indicating a first identifier; and the first terminal determines that the adaptation layer identifier of the second terminal is the first identifier based on the first indication information.

Description

[0001] This application is a divisional application of the PCT international patent application PCT / CN2021 / 105991 with an application date of July 13, 2021, which entered the Chinese national phase with Chinese patent application number 202180096893.2 and the invention name being “A wireless communication method, device, and terminal equipment”. Technical Field

[0002] The embodiments of the present application relate to the field of mobile communication technology, and specifically to a wireless communication method and apparatus, and terminal equipment. Background Art

[0003] In the Layer-2 terminal-to-network relay architecture, the communication data between the remote terminal (remote UE) and the base station is forwarded by the relay terminal (relay UE). Since multiple remote UEs can be connected to the same relay UE at the same time, the layer-2 relay (layer-2 relay) architecture requires the base station to distinguish data from different remote UEs. For this reason, 3GPP decided that the remote UE needs to be associated with an adaptation layer identifier (ID), and both the relay UE and the base station know the correspondence between the adaptation layer ID and the remote UE. The data packets between the relay UE and the base station carry the adaptation layer ID, so the base station can know which remote UE the data comes from, and the relay UE can also know which remote UE the data should be forwarded to.

[0004] However, currently, there is a lack of a method for allocating an adaptation layer ID of a remote UE to a multi-hop relay network in which a remote UE accesses a base station through multiple relay UEs, thereby affecting the communication between the remote UE and the network side. Summary of the invention

[0005] The embodiments of the present application provide a wireless communication method and apparatus, and a terminal device.

[0006] The wireless communication method provided in the embodiment of the present application includes:

[0007] After receiving the first message sent by the second terminal, the first terminal sends the first message or the first report to the network device;

[0008] The first terminal receives first indication information sent by the network device, where the first indication information is used to indicate a first identifier;

[0009] The first terminal determines, based on the first indication information, that the adaptation layer identifier of the second terminal is the first identifier.

[0010] The wireless communication method provided in the embodiment of the present application includes:

[0011] After receiving the first message sent by the second terminal, the first terminal sends the first message or the first report to the network device, where the first message or the first report carries a first identifier, which is the adaptation layer identifier allocated by the first terminal to the second terminal.

[0012] The wireless communication device provided in the embodiment of the present application includes:

[0013] a sending module, configured to send the first message or the first report to the network device after receiving the first message sent by the second terminal;

[0014] A receiving module, configured to receive first indication information sent by the network device, where the first indication information is used to indicate a first identifier;

[0015] The determination module is configured to determine, based on the first indication information, that the adaptation layer identifier of the second terminal is the first identifier.

[0016] The wireless communication device provided in the embodiment of the present application includes:

[0017] The sending module is configured to send the first message or the first report to the network device after receiving the first message sent by the second terminal. The first message or the first report carries a first identifier, and the first identifier is the adaptation layer identifier allocated by the first terminal to the second terminal.

[0018] The terminal device provided in the embodiment of the present application may be the first terminal in the above solution, and the terminal device includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above wireless communication method.

[0019] The chip provided in the embodiment of the present application is used to implement the above-mentioned wireless communication method.

[0020] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned wireless communication method.

[0021] The computer-readable storage medium provided in the embodiment of the present application is used to store a computer program, which enables a computer to execute the above-mentioned wireless communication method.

[0022] The computer program product provided in the embodiment of the present application includes computer program instructions, which enable a computer to execute the above-mentioned wireless communication method.

[0023] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the above-mentioned wireless communication method.

[0024] Through the above technical solution, when the second terminal in the multi-hop relay network needs to be allocated an adaptation layer identifier, i.e., a first identifier, a first message is sent to the first terminal. After receiving the first message, the first terminal sends a first message or a first report to the network device to request the network device to allocate the first identifier, or allocates the first identifier to the second terminal, and sends the allocated first identifier to the network device, thereby completing the allocation of the adaptation layer identifier of the second terminal in the multi-hop relay network. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0026] Figure 1 It is an optional schematic diagram of an application scenario of an embodiment of the present application;

[0027] Figure 2 It is an optional schematic diagram of an application scenario of an embodiment of the present application;

[0028] Figure 3 is an optional schematic diagram of a protocol stack of an embodiment of the present application;

[0029] Figure 4 is an optional flowchart of a wireless communication method according to an embodiment of the present application;

[0030] Figure 5 is an optional flowchart of a wireless communication method according to an embodiment of the present application;

[0031] Fig. 6A is an optional flowchart of a wireless communication method according to an embodiment of the present application;

[0032] Figure 6B is an optional flowchart of a wireless communication method according to an embodiment of the present application;

[0033] Figure 7 is an optional flowchart of a wireless communication method according to an embodiment of the present application;

[0034] Figure 8 is an optional flowchart of a wireless communication method according to an embodiment of the present application;

[0035] Fig. 9 is an optional flowchart of a wireless communication method according to an embodiment of the present application;

[0036] Fig.10is an optional flowchart of a wireless communication method according to an embodiment of the present application;

[0037] Fig.11 is an optional flowchart of a wireless communication method according to an embodiment of the present application;

[0038] Fig.12 is an optional structural diagram of a wireless communication device according to an embodiment of the present application;

[0039] Fig.13 is an optional structural diagram of a wireless communication device according to an embodiment of the present application;

[0040] Fig.14 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0041] Fig.15 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0042] Fig.16 It is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] Figure 1 It is a schematic diagram of an application scenario of an embodiment of the present application.

[0045] like Figure 1 As shown, the communication system 100 may include a terminal device 110 (including a terminal device 110-1 and a terminal device 110-2) and a network device 120. The network device 120 may communicate with the terminal device 110-1 via an air interface. Multi-service transmission is supported between the terminal device 110-1 and the network device 120. The terminal device 110-2 communicates with the network device 120 via the terminal device 110-1, wherein the terminal device 110-1 is called a relay UE and the terminal device 110-2 is called a remote UE.

[0046] It should be understood that the embodiments of the present application are only exemplified by the communication system 100, but the embodiments of the present application are not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine Type Communications (eMTC) system, 5G communication system (also called New Radio (NR) communication system), or future communication systems, etc.

[0047] exist Figure 1 In the communication system 100 shown, the network device 120 may be an access network device that communicates with the terminal device 110. The access network device may provide communication coverage for a specific geographical area, and may communicate with the terminal device 110 (eg, UE) located in the coverage area.

[0048] The network device 120 may be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0049] The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wireless connection.

[0050] For example, the terminal device 110 may refer to an access terminal, a user equipment (UE), a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.

[0051] The terminal device 110 may be used for device-to-device (D2D) communication.

[0052] The wireless communication system 100 may also include a core network device 130 for communicating with the base station, and the core network device 130 may be a 5G core network (5G Core, 5GC) device, for example, an access and mobility management function (Access and Mobility Management Function, AMF), and for example, an authentication server function (Authentication Server Function, AUSF), and for example, a user plane function (User Plane Function, UPF), and for example, a session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be an evolved packet core (Evolved Packet Core, EPC) device of the LTE network, for example, a session management function + a data gateway (Session Management Function + Core Packet Gateway, SMF + PGW-C) device of the core network. It should be understood that SMF + PGW-C can simultaneously implement the functions that SMF and PGW-C can implement. In the process of network evolution, the above-mentioned core network device may also be called other names, or a new network entity may be formed by dividing the functions of the core network, which is not limited in the embodiments of the present application.

[0053] The functional units in the communication system 100 may also establish connections through next generation (NG) network interfaces to achieve communication.

[0054] For example, the terminal device establishes an air interface connection with the access network device through the NR interface for transmitting user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); the access network device, such as the next generation wireless access base station (gNB), can establish a user plane data connection with the UPF through the NG interface 3 (N3 for short); the access network device can establish a control plane signaling connection with the AMF through the NG interface 2 (N2 for short); the UPF can establish a control plane signaling connection with the SMF through the NG interface 4 (N4 for short); the UPF can exchange user plane data with the data network through the NG interface 6 (N6 for short); the AMF can establish a control plane signaling connection with the SMF through the NG interface 11 (N11 for short); the SMF can establish a control plane signaling connection with the PCF through the NG interface 7 (N7 for short).

[0055] Figure 1 A base station, a core network device and two terminal devices are shown exemplarily. Optionally, the wireless communication system 100 may include multiple base station devices and each base station may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0056] It should be noted that Figure 1It is only to illustrate the system to which the present application is applicable in the form of an example. Of course, the method shown in the embodiment of the present application can also be applied to other systems. In addition, the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. 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 " / " in this article generally indicates that the associated objects before and after are in an "or" relationship. It should also be understood that the "indication" mentioned in the embodiment of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, B can be obtained through C; it can also mean that there is an association relationship between A and B. It should also be understood that the "correspondence" mentioned in the embodiment of the present application can mean that there is a direct or indirect correspondence relationship between the two, or it can mean that there is an association relationship between the two, or it can mean that there is an indication and being indicated, configuration and being configured, etc. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices), and the present application does not limit its specific implementation method. For example, predefined can refer to the definition in the protocol. It should also be understood that in the embodiments of the present application, the "protocol" may refer to a standard protocol in the field of communications, such as LTE protocols, NR protocols, and related protocols used in future communication systems, and the present application does not limit this.

[0057] based on Figure 1 The communication system shown in Figure 2 As shown, the communication system may further include: a terminal device 110-3 communicating with the network device 120 through the terminal device 110-1 and the terminal device 110-2. In this case, the terminal device 110-3 is a remoteUE, and the terminal device 110-1 and the terminal device 110-2 are relay UEs.

[0058] exist Figure 1 and Figure 2 In the communication system shown, the remote UE communicates with the network device through one relay UE and two relay UEs respectively. In actual applications, the remote UE can communicate with the network device through more relay UEs. In the embodiment of the present application, there is no limitation on the number of relay UEs between the remote UE and the network device.

[0059] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all belong to the protection scope of the embodiments of the present application.

[0060] Before describing in detail the wireless communication method provided in the embodiments of the present application, some technologies of UE to network relay are briefly described.

[0061] 3GPP R17 introduced the access layer, i.e., layer-2 terminal-to-network relay. In the layer-2 terminal-to-network relay, the communication data between the remote UE and the base station is forwarded by the relay UE, and the relay UE performs routing and forwarding of the control plane and user plane data at the access layer. Since multiple remote UEs can be connected to the same relay UE at the same time, and the layer-2 terminal-to-network architecture requires the base station to be able to distinguish data from different remote UEs. For this reason, 3GPP decided that the remote UE needs to be associated with an adaptation layer ID (identifier), and both the relay UE and the base station know the correspondence between the adaptation layer ID and the remote UE. The data packets between the relay UE and the base station carry the adaptation layer ID, so the base station can know which remote UE the data comes from, and the relay UE can also know which remote UE the data should be forwarded to.

[0062] like Figure 3 As shown, the Adaptation Layer (ADAPT) is placed above the Radio Link Control (RLC) sublayer of the control plane and the user plane at the Uu interface between the relay UE and the gNB. The Service Data Adaptation Protocol (SDAP) / Packet Data Convergence Protocol (PDCP) and Radio Resource Control (RRC) of the Uu interface are terminated between the remote terminal and the gNB, while RLC, QoS), Media Access Control (MAC) and PHY (Physical Layer, PHY) are terminated in each link (i.e., the link between the remote terminal and the relay terminal and the link between the relay terminal and the gNB).

[0063] For L2 UE to network relay uplink

[0064] -The Uu adaptation layer of the relay terminal supports uplink bearer mapping between access PC5 RLC channels for relaying and outgoing Uu RLC channels on the relay UE Uu path. For uplink relay services, different end-to-end bearers (Signaling Radio Bearer (SRB), Data Radio Bearer (SRB)) of the same remote UE and / or different remote UEs can be N:1 mapped and data multiplexed on one Uu RLC channel.

[0065] -Uu Adaptation Layer is used to support remote terminal identification for uplink services (multiplexing data from multiple remote terminals). The remote terminal Uu radio bearer and the remote terminal identification information are included in the uplink Uu Adaptation Layer so that the gNB can associate the received data packets of a specific PDCP entity associated with the right remote terminal Uu radio bearer of the remote terminal.

[0066] For L2 UE to network relay downlink:

[0067] -The Uu Adaptation Layer may be used to support downlink bearer mapping at the gNB to map the end-to-end radio bearers (SRB, DRB) of the remote terminal to the Uu RLC channel over the relay UE-Uu path. The Uu Adaptation Layer may be used to support downlink N:1 bearer mapping and data multiplexing between multiple end-to-end radio bearers (SRB, DRB) of the remote terminal and / or different remote terminals and one Uu RLC channel on the relay UE Uu path.

[0068] -The Uu adaptation layer needs to support remote terminal identification for downlink services. The identity information of the remote terminal Uu radio bearer and the identification information of the remote terminal need to be placed in the Uu adaptation layer through the gNB at the downlink so that the relay UE can map the data packets received from the remote terminal Uu radio bearer to its related PC5 RLC channel.

[0069] However, the related art does not solve the problem of how to enable the relay / remote UE to obtain the user identification information required for use in the adaptation layer in a multi-hop network relay system.

[0070] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and they all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0071] The present application provides a wireless communication method. Figure 4 As shown, including:

[0072] S401. After receiving a first message sent by a second terminal, a first terminal sends the first message or a first report to a network device.

[0073] After receiving the first message, the first terminal may send the first message to the network device, or may send a first report to the network device.

[0074] Optionally, the first message includes one of the following messages: RRC establishment request (RRCSetupRequest), RRC recovery request (RRCResumeRequest or RRCResumeRequest1), RRC reconfiguration completion message (RRCReconfigurationComplete) and other messages.

[0075] Optionally, the first report includes: a sidelink user equipment information (sidelink UE Information) message.

[0076] In some embodiments, before the first terminal sends the first message or the first report to the network device, the first terminal establishes a connection with the network device.

[0077] In the embodiment of the present application, the first terminal communicates with the second terminal through the PC5 interface.

[0078] In some embodiments, the first terminal is a first relay terminal, and the second terminal is a second relay terminal. The first relay terminal is a relay terminal that communicates with the network device through a Uu interface. At this time, the second relay terminal communicates with the network device through the first relay terminal.

[0079] In a scenario where the first terminal is a first relay terminal and the second terminal is a second relay terminal, Figure 2 In the communication system shown, the first terminal is terminal device 110 - 1 , and the second terminal is terminal device 1102 .

[0080] Optionally, the second relay terminal may also be connected to other relay terminals.

[0081] In one example, UE1 is connected to the network device via UE2, UE3, and UE4 in sequence. At this time, the first relay terminal is UE4 and the second relay terminal is UE3.

[0082] Optionally, the second relay terminal may also be connected to a remote terminal.

[0083] In one example, UE1 is connected to the network device via UE2 and UE3 in sequence. At this time, the first relay terminal is UE3 and the second relay terminal is UE2.

[0084] It should be noted that, when the first terminal is the first relay terminal and the second terminal is the second relay terminal, the second relay terminal is directly connected to the remote terminal, or is connected to the remote terminal through other relay terminals. At this time, the first relay terminal can also receive the first message or the first report sent by the second relay terminal indicating that the remote terminal requests an adaptation layer identifier, and receive the first indication information indicating the adaptation layer identifier of the remote terminal, and forward the first indication information to the second relay terminal.

[0085] In some embodiments, the first terminal is a first relay terminal and the second terminal is a remote terminal.

[0086] For example, the first terminal is a first relay terminal and the second terminal is a remote terminal. There is at least a second relay terminal between the first relay terminal and the network device, and the communication between the first relay terminal and the network device is forwarded at least through the second relay terminal. Figure 2 In the communication system shown, the first terminal is terminal device 110 - 2 , and the second terminal is terminal device 110 - 3 .

[0087] Optionally, the second relay terminal is connected to the network device, that is, the second relay terminal communicates with the network device through the Uu port. In one example, UE1 is connected to the network device via UE2 and UE3 in sequence. At this time, the remote terminal is UE1, the first relay terminal is UE2, the second relay terminal is UE3, and UE3 is connected to the network device.

[0088] The first relay terminal sends the first message or the first report to the second relay terminal, and the second relay terminal sends the first message or the second report to the network device.

[0089] Optionally, there is at least one third relay terminal between the second relay terminal and the network device.

[0090] In one example, UE1 is connected to the network device via UE2, UE3, and UE4 in sequence. At this time, the remote terminal is UE1, the first relay terminal is UE2, the second relay terminal is UE3, and UE3 is connected to the third relay terminal UE4.

[0091] In one example, UE1 is connected to the network device via UE2, UE3, UE4, and UE5 in sequence. At this time, the remote terminal is UE1, the first relay terminal is UE2, the second relay terminal is UE3, and the third relay terminal includes: UE4 and UE5, UE3 is connected to UE4, and UE4 is connected to UE5.

[0092] Taking an example in which there is a third relay terminal UE A between the second relay terminal and the network device, the first relay terminal sends a first message or a first report to the second relay terminal, the second relay terminal sends the first message or the first report to UE A, and UE A sends the first message or the first report to the network device.

[0093] Taking the example of two third relay terminals (UE A and UE B) between the second relay terminal and the network device, the first relay terminal sends the first message or the first report to the second relay terminal, the second relay terminal sends the first message or the first report to UE A, UE A sends the first message or the first report to UE B, and UE B sends the first message or the first report to the network device.

[0094] In the case where a third relay terminal is provided between the second relay terminal and the network device, the embodiment of the present application does not impose any limitation on the number of the third relay terminals.

[0095] In some embodiments, the first message does not carry an adaptation layer message header; or, the first message carries an adaptation layer message header, and an identification field in the adaptation layer message header is set to a default value; or, the first message carries an adaptation layer message header, and an identification field in the adaptation layer message header is set to a second identification, and the second identification is an adaptation layer identification of the first terminal.

[0096] Taking the first terminal as the first relay terminal and the second terminal as the second relay terminal as an example, the situation in which the first message carries the adaptation layer header includes one of the following:

[0097] Case 1A: the first message received by the first relay terminal does not carry an adaptation layer message header, or carries an adaptation layer message header, and the identification field in the adaptation layer message header is set to a default value;

[0098] Case 1B: The first message sent by the first relay terminal to the network device does not carry an adaptation layer message header, or carries an adaptation layer message header, and the identification field in the adaptation layer message header is set to a default value;

[0099] Case 1C: The first message sent by the first relay terminal to the network device does not carry an adaptation layer message header, or carries an adaptation layer message header, and the identification field in the adaptation layer message header is set to a default value, or carries an adaptation layer message header, and the identification field in the adaptation layer message header is set to a second identification.

[0100] Taking the first terminal as the first relay terminal and the second terminal as the remote terminal as an example, the situation where the first message carries the adaptation layer header includes one of the following:

[0101] Case 2A: The first message received by the first relay terminal does not carry an adaptation layer message header, or carries an adaptation layer message header, and the identification field in the adaptation layer message header is set to a default value;

[0102] Case 2B: The first message sent by the first relay terminal to the second relay terminal does not carry an adaptation layer message header, or carries an adaptation layer message header, and the identification field in the adaptation layer message header is set to a default value;

[0103] Case 2C: The first message sent by the second relay terminal to the network device does not carry an adaptation layer message header, or carries an adaptation layer message header and the identification field in the adaptation layer message header is set to a default value, or carries an adaptation layer message header and the identification field in the adaptation layer message header is set to a second identification.

[0104] S402. The first terminal receives first indication information sent by the network device, where the first indication information is used to indicate a first identifier.

[0105] Taking the case where the first terminal is a first relay terminal and the second terminal is a second relay terminal as an example, the first identifier indicated by the first indication information is the adaptation layer identifier of the second relay terminal.

[0106] The network device sends the first indication information to the first relay terminal, and the first relay terminal receives the first indication information sent by the network device.

[0107] Taking the case where the first terminal is a first relay terminal and the second terminal is a remote terminal as an example, the first identifier indicated by the first indication information is an adaptation layer identifier of the remote terminal.

[0108] The network device sends the first indication information to the second relay terminal through at least one third relay terminal or through the Uu interface, the second relay terminal sends the received first indication information to the first relay terminal, and the first relay terminal receives the first indication information sent by the network device.

[0109] In the case where the first terminal is a first relay terminal and the second terminal is a remote terminal, S402, the first terminal receives first indication information sent by the network device, including one of the following two methods:

[0110] Mode A1: The first relay terminal receives the first indication information sent by the network device to the first relay terminal through forwarding by the second relay terminal;

[0111] Mode A2: The first relay terminal receives first indication information sent by the second relay terminal, and the first indication information is sent by the network device to the second relay terminal.

[0112] In mode A1, the first indication information is sent by the network device to the first relay terminal. The network device sends the first indication information to the second relay terminal. After receiving the first indication information, the second relay terminal sends the first indication information to the first relay terminal.

[0113] In mode A2, the first indication information is sent by the network device to the second relay terminal. The network device sends the first indication information to the second relay terminal. After receiving the first indication information, the second relay terminal forwards the first indication information to the first relay terminal.

[0114] S403: The first terminal determines, based on the first indication information, that the adaptation layer identifier of the second terminal is the first identifier.

[0115] After receiving the first indication information, the first terminal determines, according to the first indication information, that the first identifier indicated by the first indication information is the adaptation layer identifier of the second terminal.

[0116] Taking the first terminal as the first relay terminal and the second terminal as the second relay terminal as an example, after receiving the first indication information, the first relay terminal determines that the first identifier indicated by the first indication information is the adaptation layer identifier allocated by the network device to the second relay terminal.

[0117] Taking the first terminal as the first relay terminal and the second terminal as the remote terminal as an example, after receiving the first indication information, the first relay terminal determines that the first identifier indicated by the first indication information is the adaptation layer identifier allocated by the network device to the remote terminal.

[0118] In an embodiment of the present application, when the second terminal in a multi-hop relay network needs to be allocated an adaptation layer identifier, i.e., a first identifier, a first message is sent to the first terminal. After receiving the first message, the first terminal sends a first message or a first report to the network device to request the network device to allocate the first identifier, or allocates the first identifier to the second terminal, and sends the allocated first identifier to the network device, thereby completing the allocation of the adaptation layer identifier of the second terminal in the multi-hop relay network.

[0119] In some embodiments, the first terminal determines that the first indication information indicates the first identifier in one of the following ways:

[0120] Method B1, based on the relationship of time sequence;

[0121] Mode B2: indicating, based on the first indication information, that the first user equipment identifier (UE ID) of the first terminal corresponds to the first identifier;

[0122] Mode B3: Indicating, based on the first indication information, that the L2 address information of the second terminal corresponds to the first identifier.

[0123] In the case that the second terminal is a remote terminal or the second terminal is a second relay terminal, the manner in which the first terminal determines that the first indication information indicates the first identifier may be the same or different.

[0124] In one example, the first terminal is UE3. When the communication system structure is UE1-UE2-UE3-network device, UE3 determines that the first indication information indicates the adaptation layer identifier of UE2 based on method B1. At this time, UE3 is the first relay terminal and UE2 is the second relay terminal. When the communication system structure is UE2-UE3-UE4-network device, UE3 determines that the first indication information indicates the adaptation layer identifier of UE2 based on method B1. At this time, UE2 is a remote device, UE3 is the first relay terminal, and there is UE4 between UE3 and the network device.

[0125] In one example, the first terminal is UE3. When the communication system structure is UE1-UE2-UE3-network device, UE3 determines that the first indication information indicates the adaptation layer identifier of UE2 based on method B1. At this time, UE3 is the first relay terminal and UE2 is the second relay terminal. When the communication system structure is UE2-UE3-UE4-network device, UE3 determines that the first indication information indicates the adaptation layer identifier of UE2 based on method B2. At this time, UE2 is a remote device, UE3 is the first relay terminal, and there is UE4 between UE3 and the network device.

[0126] In one example, the first terminal is UE3. When the communication system structure is UE1-UE2-UE3-network device, UE3 determines that the first indication information indicates the adaptation layer identifier of UE2 based on method B2. At this time, UE3 is the first relay terminal and UE2 is the second relay terminal. When the communication system structure is UE2-UE3-UE4-network device, UE3 determines that the first indication information indicates the adaptation layer identifier of UE2 based on method B3. At this time, UE2 is a remote device, UE3 is the first relay terminal, and there is UE4 between UE3 and the network device.

[0127] In an embodiment of the present application, the first terminal is a relay device connected to the second terminal. The first terminal can be directly connected to the network device or connected to the network device through other relay devices. In a multi-hop relay network in which a remote terminal is connected to the network device through multiple relay terminals, different relay terminals can determine the adaptation layer identifier for the previous terminal device in the same or different ways.

[0128] In one example, when the communication system structure is UE1-UE2-UE3-UE4 network equipment, UE2 determines that the first indication information indicates the adaptation layer identifier of UE2 based on method B1, UE3 determines that the first indication information indicates the adaptation layer identifier of UE2 based on method B2, and UE4 determines that the first indication information indicates the adaptation layer identifier of UE3 based on method B3.

[0129] In one example, when the communication system structure is UE1-UE2-UE3-UE4 network equipment, UE2 determines that the first indication information indicates the adaptation layer identifier of UE2 based on method B2, UE3 determines that the first indication information indicates the adaptation layer identifier of UE2 based on method B2, and UE4 determines that the first indication information indicates the adaptation layer identifier of UE3 based on method B2.

[0130] In mode B1, after the first terminal sends the first message or the first report to the network device and before receiving the first indication information sent by the network device, the first terminal does not send any message to the network device.

[0131] After the first terminal sends the first message or the first report to the network device, it does not send other messages similar to the first message to the network device, and waits for the first indication information sent by the network device to avoid confusion in the terminal identification allocation. When the first terminal receives the first information sent by the network device, it determines that the first indication information indicates the first identification of the first terminal.

[0132] In mode B2, the first indication information is used to indicate a first identifier corresponding to a first user equipment identifier UE ID of the first terminal. Optionally, the first UE ID is a UE ID used by the first terminal for a Uu interface.

[0133] In mode B2, the first terminal determines that the adaptation layer identifier of the second terminal is the first identifier based on the first indication information, including: the first terminal determines that the adaptation layer identifier of the second terminal is the first identifier based on the first identifier corresponding to the first UE ID indicated by the first indication information.

[0134] After receiving the first indication information, the first terminal determines that the first indication information indicates the first identifier corresponding to the first UE ID, and then determines that the first identifier is the adaptation layer identifier allocated by the network device to the first terminal corresponding to the first UE ID.

[0135] In some embodiments, after the first terminal receives the first message sent by the second terminal, the first terminal obtains the first UE ID from the first message.

[0136] In mode B3, the first indication information indicates a first identifier of a layer 2 address for the second terminal.

[0137] Optionally, the layer 2 address is based on a second UE ID of the second terminal, wherein the second UE ID is a UE ID used by the first terminal for the PC5 interface.

[0138] In some embodiments, the first message or the first report includes at least one of the following information:

[0139] second indication information, where the second indication information is used to indicate a second UE ID of the second terminal;

[0140] The third indication information is used to indicate that the second UE ID needs to establish a relay connection.

[0141] Optionally, the third indication information is used to indicate that a relay connection needs to be established for the second UE ID.

[0142] In some embodiments, the first indication information is carried in the first adaptation layer configuration information, or carried in the dedicated configuration information. Optionally, the first adaptation layer configuration information may be carried in the first adaptation layer configuration message, and the dedicated configuration information may be carried in the dedicated configuration message.

[0143] In an example, the first terminal sends a first message to the network device, and the network device returns first adaptation layer configuration information in response to the first message to the first terminal, where the first adaptation layer configuration information carries first indication information.

[0144] In one example, the first terminal sends a first message to a network device, and the network device returns dedicated configuration information in response to the first message to the first terminal, where the dedicated configuration information carries first indication information.

[0145] In one example, the first terminal sends a first report to the network device, and the network device returns first adaptation layer configuration information to the first terminal, where the first adaptation layer configuration information carries first indication information.

[0146] In some embodiments, the first terminal receives a second identifier sent by a network device, where the second identifier is an adaptation layer identifier of the first terminal, and the second identifier is carried in first adaptation layer configuration information, second adaptation layer configuration information, or dedicated configuration information.

[0147] Optionally, the first terminal receives the first identifier and the second identifier sent by the network device through the same configuration information.

[0148] In one example, the first indication information and the second identifier are carried in the first adaptation layer configuration information.

[0149] In one example, the first indication information and the second identifier are carried in dedicated configuration information.

[0150] Optionally, the first terminal receives the first identifier and the second identifier sent by the network device through different configuration information.

[0151] In an example, the first indication information is carried in the first adaptation layer configuration information, and the second identifier is carried in the second adaptation layer configuration information.

[0152] In one example, the first indication information is carried in the dedicated configuration information, and the second identifier is carried in the second adaptation layer configuration information.

[0153] Here, the network device may indicate the adaptation layer identifier of the first terminal, that is, the second identifier, to the first terminal while indicating the first identifier to the second terminal based on the first message or the first report sent by the first terminal.

[0154] In some embodiments, when the first terminal sends the first report to the network device, the first terminal sends the first message to the network device, and the first message carries the first identifier.

[0155] like Figure 5 As shown, including:

[0156] S501. A first terminal receives a first message sent by a second terminal.

[0157] S502: The first terminal sends a first report to the network device.

[0158] S503: The first terminal receives first indication information sent by the network device in response to the first report.

[0159] S504: The first terminal determines a first identifier based on the first indication information.

[0160] S505: The first terminal sends a first message to the network device.

[0161] The first message carries a first identifier.

[0162] In some embodiments, after S403, the first terminal receives a second message sent by the network device, where the second message carries the first identifier; and the first terminal forwards the second message to the second terminal based on the first identifier.

[0163] The first terminal maps the current second message to the second terminal based on the first identifier carried in the second message, and then sends the second message to the second terminal.

[0164] The present application also provides a wireless communication method. Fig. 6A As shown, including:

[0165] S601. After receiving a first message sent by a second terminal, a first terminal sends the first message or a first report to a network device, where the first message or the first report carries a first identifier, and the first identifier is an adaptation layer identifier allocated by the first terminal to the second terminal.

[0166] After receiving the first message, the first terminal may send the first message to the network device, or may send a first report to the network device.

[0167] Optionally, the first message includes one of the following messages: RRCSetupRequest, RRCResumeRequest, RRCResumeRequest1, RRCReconfigurationComplete and other messages.

[0168] Optionally, the first report includes: a sidelink UE Information message.

[0169] In some embodiments, before the first terminal sends the first message or the first report to the network device, the first terminal establishes a connection with the network device.

[0170] In some embodiments, the first terminal allocates the first identifier to the second terminal based on first configuration information.

[0171] For example, the first terminal is a first relay terminal and the second terminal is a second relay terminal. The first identifier allocated by the first relay terminal to the second relay terminal is not used by other relay terminals connected to the first relay terminal.

[0172] For example, the first terminal is a first relay terminal and the second terminal is a remote terminal. The first identifier allocated by the first relay terminal to the remote terminal is not used by other remote terminals connected to the first relay terminal.

[0173] Optionally, the first configuration information indicates an address space configured in advance by the first terminal, and the first terminal allocates a first identifier to the second terminal based on the first configuration information.

[0174] Optionally, the address spaces configured in advance for different terminals do not overlap. In this case, the first identifier allocated by the first terminal to the second terminal is different from the identifiers configured for other terminal devices.

[0175] In some embodiments, when the first terminal sends the first message to the network device, the method further includes:

[0176] The first terminal sends a first report to the network device, where the first report is used to trigger the network device to send configuration information to the first terminal; and the first terminal receives the configuration information sent by the network device.

[0177] After receiving the first message from the second terminal, the first terminal sends a first report to the network device and receives configuration information sent by the network device. After receiving the configuration information, the first terminal sends a first message carrying a first identifier to the network device.

[0178] When the first terminal sends a first message carrying a first identifier to the network device, Figure 6B As shown, including;

[0179] S6011. The first terminal receives a first message sent by the second terminal;

[0180] S6012. The first terminal sends a first report to the network device;

[0181] S6013. The first terminal receives configuration information sent by the network device;

[0182] S6014. The first terminal sends a first message carrying a first identifier to the network device.

[0183] In the embodiment of the present application, the first terminal communicates with the second terminal via the PC5 interface.

[0184] In some embodiments, the first terminal is a first relay terminal, and the second terminal is a second relay terminal. The first relay terminal is a relay terminal that communicates with the network device through a Uu interface. At this time, the second relay terminal communicates with the network device through the first relay terminal.

[0185] In a scenario where the first terminal is a first relay terminal and the second terminal is a second relay terminal, Figure 2 In the communication system shown, the first terminal is terminal device 110 - 1 and the second terminal is terminal device 110 - 2 .

[0186] Optionally, the second relay terminal may also be connected to other relay terminals.

[0187] In one example, UE1 is connected to the network device via UE2, UE3, and UE4 in sequence. At this time, the first relay terminal is UE4 and the second terminal is UE4.

[0188] Optionally, the second relay terminal may also be connected to a remote terminal.

[0189] In one example, UE1 is connected to the network device via UE2 and UE3 in sequence. At this time, the first relay terminal is UE3 and the second terminal is UE2.

[0190] It should be noted that, when the first terminal is the first relay terminal and the second terminal is the second relay terminal, the second relay terminal is directly connected to the remote terminal, or is connected to the remote terminal through other relay terminals. At this time, the first relay terminal can also receive the first message or first report sent by the second relay terminal indicating that the remote terminal requests an adaptation layer identifier. The first message or first report carries a first identifier, which can be an adaptation layer identifier allocated to the remote terminal by any relay terminal before the first relay terminal.

[0191] Taking the first terminal as the first relay terminal and the second terminal as the remote terminal as an example, the first identifier is the adaptation layer identifier allocated by the first relay terminal to the remote terminal. The first relay terminal sends the adaptation layer identifier allocated to the remote terminal to the network device.

[0192] In the case where the first terminal is a first relay terminal, the second terminal is a remote terminal, and there is at least a second relay terminal between the first relay terminal and the network device,

[0193] The first relay terminal may send the first report to the network device through the second relay terminal.

[0194] The first terminal may send a first report to the second relay terminal, and the second relay terminal parses the received first report, generates a second report, and sends the second report to the network device. In the case where there is no relay terminal between the second relay terminal and the network device, the second report is the second report sent to the network device, and in the case where there is a third relay terminal between the second relay terminal and the network device, the second report is the second report sent to the third relay terminal.

[0195] In some embodiments, when the first terminal is a first relay terminal and the second terminal is a second relay terminal, the method further includes:

[0196] The first relay terminal receives second configuration information sent by the network device, where the second configuration information includes:

[0197] fourth indication information, where the fourth indication information is used to indicate that the adaptation layer identifier of the second relay terminal remains the first identifier; or,

[0198] The fifth indication information is used to indicate that the adaptation layer identifier of the second relay terminal is replaced from the first identifier to the third identifier.

[0199] When the second configuration information received by the first relay terminal includes fourth indication information, and the network device determines that the first identifier allocated by the first relay terminal to the second relay terminal is available, the first relay terminal continues to use the first identifier as the adaptation layer identifier of the second relay terminal.

[0200] When the second configuration information received by the first relay terminal includes the fifth indication information, and the network device determines that the first identifier allocated by the first relay terminal to the second relay terminal is unavailable, the first relay terminal no longer continues to use the first identifier as the adaptation layer identifier of the second relay terminal, but uses the third identifier allocated by the network device to the second relay terminal as the adaptation layer identifier of the second relay terminal.

[0201] For example, the first terminal is a first relay terminal and the second terminal is a second relay terminal, and the first identifier is an adaptation layer identifier allocated by the first relay terminal to the second relay terminal. The first relay terminal sends the adaptation layer identifier allocated to the second relay terminal to the network device.

[0202] In some embodiments, the first terminal is a first relay terminal and the second terminal is a remote terminal.

[0203] For example, the first terminal is a first relay terminal and the second terminal is a remote terminal. There is at least a second relay terminal between the first relay terminal and the network device, and the communication between the first relay terminal and the network device is forwarded at least through the second relay terminal. Figure 2 In the communication system shown, the first terminal is terminal device 110 - 2 , and the second terminal is terminal device 110 - 3 .

[0204] Optionally, the second relay terminal is connected to the network device, that is, the second relay terminal communicates with the network device via a Uu interface. In one example, UE1 is connected to the network device via UE2 and UE3 in sequence. At this time, the remote terminal is UE1, the first relay terminal is UE2, the second relay terminal is UE3, and UE3 is connected to the network device.

[0205] The first relay terminal sends the first message or the first report to the second relay terminal, and the second relay terminal sends the first message or the first report to the network device.

[0206] Optionally, there is at least one third relay terminal between the second relay terminal and the network device.

[0207] In one example, UE1 is connected to the network device via UE2, UE3, and UE4 in sequence. At this time, the remote terminal is UE1, the first relay terminal is UE2, the second relay terminal is UE3, and UE3 is connected to the third relay terminal UE4.

[0208] In one example, UE1 is connected to the network device via UE2, UE3, UE4, and UE5 in sequence. At this time, the remote terminal is UE1, the first relay terminal is UE2, the second relay terminal is UE3, and the third relay terminal includes: UE4 and UE5, UE3 is connected to UE4, and UE4 is connected to UE5.

[0209] Taking an example in which there is a third relay terminal UE A between the second relay terminal and the network device, the first relay terminal sends a first message or a first report to the second relay terminal, the second relay terminal sends the first message or the first report to UE A, and UE A sends the first message or the first report to the network device.

[0210] Taking the example of two third relay terminals (UE A and UE B) between the second relay terminal and the network device, the first relay terminal sends the first message or the first report to the second relay terminal, the second relay terminal sends the first message or the first report to UE A, UE A sends the first message or the first report to UE B, and UE B sends the first message or the first report to the network device.

[0211] In the case where a third relay terminal is provided between the second relay terminal and the network device, the embodiment of the present application does not impose any limitation on the number of the third relay terminals.

[0212] In some embodiments, when there is at least a second relay terminal between the first relay terminal and the network device, the first identifier is modified by the second relay terminal to a fourth identifier, and the fourth identifier is an adaptation layer identifier allocated by the second relay terminal to the remote terminal.

[0213] When the second relay terminal receives the first identifier sent by the first relay terminal and determines that the first identifier is unavailable, it modifies the first identifier to a fourth identifier, where the fourth identifier is the adaptation layer identifier allocated by the second relay terminal to the remote terminal.

[0214] In an embodiment of the present application, when the first relay terminal sends a first message carrying a first identifier to the second relay terminal, or the first relay terminal sends a first report carrying the first identifier to the second relay terminal, the second relay terminal can read the first identifier sent by the first relay terminal and determine whether the first identifier is available. When the judgment result is that the first identifier is unavailable, the first identifier is modified to a third identifier, and the third identifier is sent to the network device through the first message or the second report. When the judgment result is that the first identifier is available, the first identifier is not modified, and the first identifier is sent to the network device through the first message or the second report.

[0215] In actual applications, any relay terminal between the first relay terminal and the network device can modify the identifier allocated to the remote terminal in the received first message or first report to the adaptation layer identifier allocated by itself to the remote terminal device.

[0216] In one example, the remote terminal is UE1, and UE1 communicates with the network equipment through the following relay terminals in sequence: UE2, UE3, UE4, and UE5. UE2 assigns an adaptation layer identifier ID1 to UE1, and UE2 sends ID1 to UE3. UE3 determines whether ID1 is available. If ID1 is available, it sends ID1 to UE4. If it is not available, it modifies ID1 to ID2 and sends it to ID4. ID4 determines whether the received ID1 or ID2 is available. If ID1 or ID2 is available, it sends ID1 or ID2 to UE5. If ID1 or ID2 is not available, it modifies ID1 or ID2 to ID3 and sends ID3 to UE5, and so on.

[0217] In some embodiments, the first relay terminal receives second configuration information sent by the network device, where the second configuration information includes:

[0218] fourth indication information, where the fourth indication information is used to indicate that the adaptation layer identifier of the remote terminal remains the first identifier; or

[0219] Fifth indication information, the fifth indication information is used to indicate that the adaptation layer identifier of the remote terminal is replaced from the first identifier to a third identifier; the third identifier is the adaptation layer identifier allocated by the network device to the remote terminal; or

[0220] The sixth indication information is used to indicate that the adaptation layer identifier of the remote terminal is replaced from the first identifier to a fourth identifier, and the fourth identifier is the adaptation layer identifier allocated by the second relay terminal to the remote terminal.

[0221] When the second configuration information received by the first relay terminal includes fourth indication information, and the network device determines that the first identifier allocated by the first relay terminal to the remote terminal is available, the first relay terminal continues to use the first identifier as the adaptation layer identifier of the remote terminal.

[0222] When the second configuration information received by the first relay terminal includes the fifth indication information, and the network device determines that the first identifier allocated by the first relay terminal to the remote terminal is unavailable, the first relay terminal no longer continues to use the first identifier as the adaptation layer identifier of the remote terminal, but uses the third identifier allocated by the network device to the remote terminal as the adaptation layer identifier of the remote terminal.

[0223] When the second configuration information received by the first relay terminal includes the sixth indication information, and the network device determines that the fourth identifier allocated by the second relay terminal to the remote terminal is unavailable, the first relay terminal does not use the first identifier as the adaptation layer identifier of the remote terminal, but uses the fourth identifier allocated by the network device to the remote terminal as the adaptation layer identifier of the remote terminal.

[0224] In actual applications, the network device receives an adaptation layer identifier allocated by the relay terminal to the remote device. When it is determined that the received adaptation layer identifier is available, the network device instructs the first terminal to continue using the received adaptation layer identifier. When the received adaptation layer identifier is unavailable, the network device reallocates the adaptation layer identifier, i.e., the third identifier, to the remote terminal, and instructs the second identifier to be used as the adaptation layer identifier of the remote terminal based on the fifth indication information.

[0225] In some embodiments, the first message does not carry an adaptation layer message header; or, the first message carries an adaptation layer message header, and an identification field in the adaptation layer message header is set to a default value; or, the first message carries an adaptation layer message header, and an identification field in the adaptation layer message header is set to a second identification, and the second identification is an adaptation layer identification of the first terminal.

[0226] Taking the first terminal as the first relay terminal and the second terminal as the second relay terminal as an example, the situation in which the first message carries the adaptation layer header includes one of the following:

[0227] Case 1A: the first message received by the first relay terminal does not carry an adaptation layer message header, or carries an adaptation layer message header, and the identification field in the adaptation layer message header is set to a default value;

[0228] Case 1B: The first message sent by the first relay terminal to the network device does not carry an adaptation layer message header, or carries an adaptation layer message header, and the identification field in the adaptation layer message header is set to a default value.

[0229] Taking the first terminal as the first relay terminal and the second terminal as the remote terminal as an example, the situation where the first message carries the adaptation layer header includes one of the following:

[0230] Case 2A: The first message received by the first relay terminal does not carry an adaptation layer message header, or carries an adaptation layer message header, and the identification field in the adaptation layer message header is set to a default value;

[0231] Case 2B: The first message sent by the first relay terminal to the second relay terminal does not carry an adaptation layer message header, or carries an adaptation layer message header, and the identification field in the adaptation layer message header is set to a default value;

[0232] Case 2C: The first message sent by the second relay terminal to the network device does not carry an adaptation layer message header, or carries an adaptation layer message header and the identification field in the adaptation layer message header is set to a default value, or carries an adaptation layer message header and the identification field in the adaptation layer message header is set to a second identification.

[0233] In some embodiments, the first terminal further performs the following steps:

[0234] The first terminal receives a second message sent by the network device, where the second message carries an adaptation layer identifier of the second terminal;

[0235] The first relay terminal forwards the second message to the second terminal based on the adaptation layer identifier of the second terminal.

[0236] The first terminal maps the current second message to the second terminal based on the first identifier carried in the second message, and then sends the second message to the second terminal.

[0237] In the embodiment of the present application, Figure 4 Or in the wireless communication method shown in Figure 6, the first relay terminal uses different logical channels to carry messages using the adaptation layer and messages not using the adaptation layer, or the first relay terminal uses the same logical channel to carry messages using the adaptation layer and messages not using the adaptation layer.

[0238] Take the first terminal as the first relay terminal and the second terminal as the remote terminal as an example. When the first relay terminal is not connected to the remote terminal, the first relay terminal does not use the adaptation layer protocol stack to transmit messages with the previous hop of the first relay terminal, i.e., the second relay terminal. The logical channel used may be logical channel 1, and downlink messages are received and uplink messages are sent based on logical channel 1. When the first relay terminal is connected to the remote terminal, the first relay terminal uses the adaptation layer protocol stack to transmit messages, wherein logical channel 1 may continue to be used to receive downlink messages and send uplink messages, or a newly added logical channel 2 may be used to receive downlink messages and send uplink messages. When the first relay terminal continues to use logical channel 1 to receive downlink messages and send uplink messages, the transmitted message needs to carry the adaptation layer identifier of the first relay terminal or the adaptation layer identifier of the remote terminal in the adaptation to distinguish whether the transmitted message is from the first relay terminal itself or needs to be forwarded to the remote terminal.

[0239] Take the first terminal as the first relay terminal and the second terminal as the second relay terminal as an example. When the second relay terminal is not connected to a remote terminal, the first relay terminal does not use the adaptation layer protocol stack to send messages. The logical channel used may be logical channel 1. Downlink messages are sent and uplink messages are received based on logical channel 1. When the second relay terminal is connected to a remote terminal, the first relay terminal uses the adaptation layer protocol stack to send messages, wherein logical channel 1 may continue to be used to send downlink messages and receive uplink messages, or a newly added logical channel 2 may be used to send downlink messages and receive uplink messages. When the first relay terminal continues to use logical channel 1 to send downlink messages and receive uplink messages, the transmitted message needs to carry the adaptation layer identifier of the second relay terminal or the adaptation layer identifier of the remote terminal in the adaptation to distinguish whether the transmitted message is from the first relay terminal itself or needs to be forwarded to the remote terminal.

[0240] In some embodiments, the protocol stack of the logical channel is changed from not using the adaptation layer to using the adaptation layer through at least one of the following indications:

[0241] Indication method 1: Interaction through signaling;

[0242] Indication method 2: indication through protocol message header.

[0243] In indication mode 1, the signaling includes at least one of the following:

[0244] A first signaling sent by the first relay terminal to the second relay terminal;

[0245] The first relay terminal receives second signaling from the second relay terminal.

[0246] Optionally, the first relay terminal sends a first signaling to the second relay terminal, and receives a second signaling from the second relay terminal in response to the first signaling.

[0247] Optionally, the first relay terminal receives the second signaling sent by the second relay terminal, and in response to the received second signaling, the second relay terminal sends the first signaling.

[0248] In indication mode 1, the first relay terminal and the second relay terminal implement the change of the protocol stack through the interaction of the first signaling and the second signaling.

[0249] In some embodiments, the protocol message header includes at least one of the following: a radio link control RLC layer message header, a media access control MAC layer message header, and a MAC layer sub-message header.

[0250] In the second implementation mode, the first relay terminal and the second relay terminal implement the indication of the change of the logical channel protocol stack through the message header of the protocol.

[0251] Below, Figure 7 The network structure shown further illustrates the communication method provided in the embodiment of the present application. Figure 7 The network topology structure shown is: UE1-UE2-UE3-network side 710; wherein UE2 and UE3 are relay UEs, ID1 is the adaptation layer identifier of UE1, and ID2 is the adaptation layer identifier of UE2.

[0252] Example 1

[0253] The relay UE determines the user identity sent by the network through the timing.

[0254] like Figure 8 As shown, including:

[0255] S801. UE1 sends message 1A to UE2.

[0256] The message 1A sent by UE1 may include messages such as RRCSetupRequest, RRCResumeRequest, RRCResumeRequest1, and RRCReconfigurationComplete.

[0257] The message 1A sent by UE1 may not carry an adaptation layer header.

[0258] The message 1A sent by UE1 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value.

[0259] S802. UE2 sends message 2A to UE3.

[0260] Message 2A may include messages such as RRCSetupRequest, RRCResumeRequest, RRCResumeRequest1, and RRCReconfigurationComplete.

[0261] The message 2A sent by UE2 may not carry the adaptation layer message header.

[0262] The message 2A sent by UE2 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value.

[0263] S803. UE3 establishes a connection with the network side.

[0264] S804. UE3 sends message 2A to the network side.

[0265] The message 2A sent by UE3 may not carry the adaptation layer message header.

[0266] The message 2A sent by UE3 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value.

[0267] S805. UE3 waits for an adaptation layer configuration message including ID2.

[0268] Here, after UE3 sends message 2A to the network side, it waits for the network side to send the adaptation layer configuration message including ID2. Before the network side sends the adaptation layer configuration message including ID2, UE3 no longer reports other messages to the network side. ID2 is the user identifier used by UE2 corresponding to message 2A.

[0269] S806. The network side sends an adaptation layer configuration message including ID2 to UE3.

[0270] S807. The network sends a message 2B based on ID2 to UE3.

[0271] S808. UE3 forwards message 2B to UE2.

[0272] Here, UE3 recognizes that ID2 is the user identifier used by UE2, and forwards message 2B to UE2.

[0273] S809: UE2 establishes a connection with the network side.

[0274] S810. UE2 sends message 1A to UE3.

[0275] The message 1A sent by UE2 may not carry an adaptation layer message header.

[0276] The message 1A sent by UE2 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value.

[0277] S811. UE3 sends message 1A to the network side.

[0278] The message 1A sent by UE3 may not carry an adaptation layer message header.

[0279] The message 1A sent by UE3 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value or ID2.

[0280] S812. UE2 waits for an adaptation layer configuration message including ID1.

[0281] After UE2 sends message 1A to the network, it waits for the network to send an adaptation layer configuration message including ID1. Before the network sends an adaptation layer configuration message including ID1, UE2 will not report other messages to the network. ID1 is the user ID used by UE1 corresponding to message 1A.

[0282] S813. The network side sends an adaptation layer configuration message including ID1 to UE2.

[0283] The network may directly send the adaptation layer configuration message including ID1 to UE3 and UE2 respectively (the message to UE2 is relayed through UE3), or the network only sends the adaptation layer configuration message including ID1 to UE3, and UE3 further sends it to UE2.

[0284] Optionally, UE2 obtains ID2.

[0285] S814. The network side sends a message 1B based on ID1 to UE3.

[0286] S815. UE3 forwards message 1B to UE2.

[0287] Here, UE3 recognizes that ID1 is the user identifier used by UE1, and forwards message 1B to UE2.

[0288] S816. UE2 sends message 1B to UE1.

[0289] UE2 recognizes that ID1 is the user identifier used by UE1, and forwards message 1B to UE1.

[0290] Example 2

[0291] The relay UE determines the user identity issued by the network through the initial identity allocated by itself.

[0292] like Fig. 9 As shown, including:

[0293] S901. UE1 sends message 1A to UE2.

[0294] The message 1A sent by UE1 may include messages such as RRCSetupRequest, RRCResumeRequest, RRCResumeRequest1, and RRCReconfigurationComplete.

[0295] The message 1A sent by UE1 may not carry an adaptation layer header.

[0296] The message 1A sent by UE1 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value.

[0297] S902. UE2 sends message 2A to UE3.

[0298] Message 2A may include messages such as RRCSetupRequest, RRCResumeRequest, RRCResumeRequest1, and RRCReconfigurationComplete.

[0299] The message 2A sent by UE2 may not carry the adaptation layer message header.

[0300] The message 2A sent by UE2 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value.

[0301] S903. UE3 establishes a connection with the network side.

[0302] S904. UE3 obtains an adaptation layer configuration message from the network.

[0303] Here, the adaptation layer configuration message can be triggered by reporting sidelink UE information;

[0304] S905. UE3 sends message 2A to the network side.

[0305] The message 2A sent by UE3 contains an ID 2' allocated by UE3.

[0306] Optionally, the ID2' is not used by other remote UEs.

[0307] S906. UE3 waits for a configuration message sent by the network side.

[0308] Here, the configuration information may indicate:

[0309] UE3 can continue to use ID2' as ID2 for UE2;

[0310] UE3 uses ID2 for ID2'.

[0311] If UE3 is allocated in the pre-configured address space, S906 can be omitted.

[0312] S907. The network sends a message 2B based on ID2 to UE3.

[0313] S908. UE3 forwards message 2B to UE2.

[0314] Here, UE3 recognizes that ID2 is the user identifier used by UE2, and forwards message 2B to UE2.

[0315] S909: UE2 establishes a connection with the network side.

[0316] S910. UE2 obtains an adaptation layer configuration message from the network.

[0317] Here, the adaptation layer configuration message may be triggered by reporting sidelink UE information.

[0318] S911. UE2 sends message 1A to UE3.

[0319] The message 1A sent by UE2 contains an ID 1' allocated by UE2.

[0320] Optionally, the ID1' is known to UE2 and is not used by other remote UEs.

[0321] S912. UE3 sends message 1A to the network side.

[0322] The message 1A sent by UE3 includes D1' allocated by UE2 or D1" after D1' is modified by UE3.

[0323] Optionally, D1′ or D1″ in the message 1A is not used by other remote UEs as far as UE3 knows.

[0324] If UE2 is allocated in a pre-configured address space, S911 and S912 may be omitted.

[0325] S913, UE2 and UE3 wait for configuration information sent by the network side.

[0326] The network may directly send the configuration information to UE3 and UE2 respectively (the message to UE2 is relayed by UE3), or the network may only send the configuration information to UE3, which is then further sent to UE2.

[0327] Here, the configuration information may indicate:

[0328] UE2 and UE3 may continue to use D1' or D1" in message 1A as ID1 for UE1;

[0329] UE2 and UE3 use ID1 for D1′ or D1″ in message 1A.

[0330] If UE2 and UE3 are allocated in the pre-configured address space, S913 may be omitted.

[0331] S914. The network side sends a message 1B based on ID1 to UE3.

[0332] S915. UE3 forwards message 1B to UE2.

[0333] Here, UE3 recognizes that ID1 is the user identifier used by UE1, and forwards message 1B to UE2.

[0334] S916. UE2 sends message 1B to UE1.

[0335] UE2 recognizes that ID1 is the user identifier used by UE1, and forwards message 1B to UE1.

[0336] Example 3

[0337] The relay UE determines the user identity issued by the network by reading the UE ID information contained in the initial uplink message

[0338] like Fig.10 As shown, including:

[0339] S1001. UE1 sends message 1A to UE2.

[0340] The message 1A sent by UE1 may include messages such as RRCSetupRequest, RRCResumeRequest, RRCResumeRequest1, and RRCReconfigurationComplete.

[0341] The message 1A sent by UE1 may not carry an adaptation layer header.

[0342] The message 1A sent by UE1 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value.

[0343] S1002. UE2 sends message 2A to UE3.

[0344] Message 2A may include messages such as RRCSetupRequest, RRCResumeRequest, RRCResumeRequest1, RRCReconfigurationComplete, etc.

[0345] The message 2A sent by UE2 may not carry the adaptation layer message header.

[0346] The message 2A sent by UE2 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value.

[0347] S1003. UE3 establishes a connection with the network side.

[0348] S1004. UE3 reads UE ID information in message 2A.

[0349] UE ID2 in message 2A is the first UE ID of UE3.

[0350] S1005. UE3 sends message 2A to the network side.

[0351] The message 2A sent by UE3 may not carry the adaptation layer message header.

[0352] The message 2A sent by UE3 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value.

[0353] S1006. The network side sends an adaptation layer configuration message to UE3.

[0354] The adaptation layer configuration message indicates that the UE ID information in message 2A is ID2 used by UE2.

[0355] S1007. The network sends a message 2B based on ID2 to UE3.

[0356] S1008. UE3 forwards message 2B to UE2.

[0357] Here, UE3 recognizes that ID2 is the user identifier used by UE2, and forwards message 2B to UE2.

[0358] S1009. UE2 establishes a connection with the network side.

[0359] S1010. UE2 reads UE ID information in message 1A.

[0360] UE ID1 in message 2A is the first UE ID of UE1.

[0361] S1011. UE2 sends message 1A to UE3.

[0362] The message 1A sent by UE2 may not carry an adaptation layer message header.

[0363] The message 1A sent by UE2 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value.

[0364] S1012. UE3 reads UE ID information in message 1A.

[0365] S1013. UE3 sends message 1A to the network side.

[0366] The message 1A sent by UE3 may not carry an adaptation layer message header.

[0367] The message 1A sent by UE3 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value or ID2.

[0368] S1014. The network side sends adaptation layer configuration information to UE3 and UE2.

[0369] The UE ID information in the adaptation layer configuration information indication message 1A is ID1 used by UE1.

[0370] The network side may directly send the adaptation layer configuration message to UE3 and UE2 respectively (the message to UE2 is relayed by UE3), or the network side only sends the adaptation layer configuration message to UE3, which is further sent to UE2.

[0371] Optionally, UE2 obtains ID2.

[0372] S1015. The network side sends a message 1B based on ID1 to UE3.

[0373] S1016. UE3 forwards message 1B to UE2.

[0374] Here, UE3 recognizes that ID1 is the user identifier used by UE1, and forwards message 1B to UE2.

[0375] S1017. UE2 sends message 1B to UE1.

[0376] UE2 recognizes that ID1 is the user identifier used by UE1, and forwards message 1B to UE1.

[0377] Example 4

[0378] The relay UE determines the user identity issued by the network through the L2 address information in the SUI message reported in advance

[0379] like Fig.11 As shown, including:

[0380] S1101. UE1 sends message 1A to UE2.

[0381] The message 1A sent by UE1 may include messages such as RRCSetupRequest, RRCResumeRequest, RRCResumeRequest1, and RRCReconfigurationComplete.

[0382] The message 1A sent by UE1 may not carry an adaptation layer header.

[0383] The message 1A sent by UE1 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value.

[0384] S1102, UE2 sends message 2A to UE3;

[0385] Message 2A may include messages such as RRCSetupRequest, RRCResumeRequest, RRCResumeRequest1, and RRCReconfigurationComplete.

[0386] The message 2A sent by UE2 may not carry the adaptation layer message header.

[0387] The message 2A sent by UE2 may carry an adaptation layer message header, and the adaptation layer message header is filled with a default value.

[0388] S1103. UE3 establishes a connection with the network side.

[0389] S1104. UE3 sends a first report to the network side.

[0390] The first report may be a sidelinkUEInformation message, and the first report includes at least one of the following:

[0391] UE ID2' is the second UE ID of UE2;

[0392] UE ID2' needs to establish an L2 relay connection.

[0393] S1105. The network side sends ID2 to UE3.

[0394] S1106. UE3 sends message 2A to the network side.

[0395] Message 2A includes ID2.

[0396] S1107. The network side sends a message 2B based on ID2 to UE3.

[0397] S1108. UE3 sends a first report to the network to forward message 2B to UE2.

[0398] Here, UE3 recognizes that ID2 is the user identifier used by UE2, and forwards message 2B to UE2.

[0399] S1109. UE2 establishes a connection with the network side.

[0400] S1110. UE2 sends a first report to the network side.

[0401] The first report may be a sidelinkUEInformation message, and the first report includes at least one of the following:

[0402] UE1 ID' is the second UE ID of UE2;

[0403] UE1 ID' needs to establish an L2 relay connection.

[0404] S1111. The network side sends ID1 to UE2.

[0405] The network side may directly send the adaptation layer configuration message to UE3 and UE2 respectively (the message to UE2 is relayed by UE3), or the network side only sends the adaptation layer configuration message to UE3, which is further sent to UE2.

[0406] S1112. UE2 sends message 1A to UE3.

[0407] Message 1A includes ID1.

[0408] S1113. UE3 sends message 1A to the network side.

[0409] Message 1A includes ID1.

[0410] S1114. The network side sends a message 1B based on ID1 to UE3.

[0411] S1115. UE3 forwards message 1B to UE2.

[0412] Here, UE3 recognizes that ID1 is the user identifier used by UE1, and forwards message 1B to UE2.

[0413] S1116. UE2 sends message 1B to UE1.

[0414] UE2 recognizes that ID1 is the user identifier used by UE1, and forwards message 1B to UE1.

[0415] S813 in the above example 1, S913 in example 2, S1014 in example 3 and S1111 in example 4 may be adaptation layer configuration messages sent by the network device to UE3 and forwarded by UE3 to UE2, or may be adaptation layer configuration messages sent by the network device to UE2 and forwarded by UE3.

[0416] In the above examples, the steps indicated by dotted lines are optional steps.

[0417] In the above example, after UE2 establishes a connection with the network device, the protocol stack between UE2 and UE3 may be changed from not using an adaptation layer to using an adaptation layer. In order to synchronize UE2 and UE3,

[0418] -UE2 and UE3 use different logical channels to carry messages using the adaptation layer and messages not using the adaptation layer;

[0419] -UE2 and UE3 use the same logical channel to carry messages using the adaptation layer and messages not using the adaptation layer, but the logical channel changes from not using the adaptation layer to using the adaptation layer.

[0420] When UE2 and UE3 use the same logical channel to carry messages using the adaptation layer and messages not using the adaptation layer:

[0421] 1. It is realized through signaling interaction between UE2 and UE3. For example, UE2 (or UE3) sends message X to UE3 (or UE2), and then UE3 (or UE2) sends message Y to UE2 (or UE3), and then UE2 / UE3 start to communicate according to the new protocol stack (that is, using the adaptation layer).

[0422] 2. Or indicate through the RLC / MAC layer message header whether the adaptation layer is used.

[0423] The wireless communication method provided in the embodiment of the present application can enable a multi-hop relay terminal to obtain user identification information required by an adaptation layer during the process of forwarding an initial uplink message sent by a remote terminal to a base station.

[0424] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will not further explain various possible combinations. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. For another example, under the premise of no conflict, the various embodiments and / or the technical features in the various embodiments described in the present application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the protection scope of the present application.

[0425] It should also be understood that in various method embodiments of the present application, the size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application. In addition, in the embodiment of the present application, the terms "downlink", "uplink" and "side" are used to indicate the transmission direction of the signal or data, wherein "downlink" is used to indicate that the transmission direction of the signal or data is the first direction sent from the site to the user equipment of the cell, "uplink" is used to indicate that the transmission direction of the signal or data is the second direction sent from the user equipment of the cell to the site, and "side" is used to indicate that the transmission direction of the signal or data is the third direction sent from user equipment 1 to user equipment 2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that three relationships can exist. Specifically, 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 " / " in this article generally indicates that the front and back associated objects are in an "or" relationship.

[0426] The present application also provides a wireless communication device 1200, such as Fig.12 As shown, applied to a first terminal, comprising:

[0427] The sending module 1201 is configured to send the first message or the first report to the network device after receiving the first message sent by the second terminal;

[0428] The receiving module 1202 is configured to receive first indication information sent by the network device, where the first indication information is used to indicate a first identifier;

[0429] The determination module 1203 is configured to determine, based on the first indication information, that the adaptation layer identifier of the second terminal is the first identifier.

[0430] In some embodiments, the apparatus 1200 further includes: an establishing module configured to establish a connection with the network device before sending the first message or the first report to the network device.

[0431] In some embodiments, the first terminal is a first relay terminal and the second terminal is a second relay terminal;

[0432] The first identifier indicated by the first indication information is the adaptation layer identifier of the second relay terminal.

[0433] In some embodiments, the first terminal is a first relay terminal, the second terminal is a remote terminal,

[0434] The first identifier indicated by the first indication information is the adaptation layer identifier of the remote terminal.

[0435] In some embodiments, there is at least a second relay terminal between the first relay terminal and the network device.

[0436] The communication between the first relay terminal and the network device is forwarded at least through the second relay terminal.

[0437] In some embodiments, the receiving module 1202 is further configured to:

[0438] The first indication information sent by the network device to the first relay terminal is received through forwarding by the second relay terminal; or the first indication information sent by the second relay terminal is received, and the first indication information is sent by the network device to the second relay terminal.

[0439] In some embodiments,

[0440] The first message does not carry an adaptation layer message header; or,

[0441] The first message carries an adaptation layer message header, and an identification field in the adaptation layer message header is set to a default value; or,

[0442] The first message carries an adaptation layer message header, and an identification field in the adaptation layer message header is set to a second identification, where the second identification is the adaptation layer identification of the first terminal.

[0443] In some embodiments, the sending module 1201 is further configured to not send a message to the network device after sending the first message or the first report to the network device and before receiving the first indication information sent by the network device.

[0444] The first indication information is used to indicate a first identifier corresponding to a first user equipment identifier UE ID of the first terminal.

[0445] In some embodiments, the determination module 1203 is further configured to:

[0446] The first terminal determines, based on the first identifier corresponding to the first UE ID indicated by the first indication information, that the adaptation layer identifier of the second terminal is the first identifier.

[0447] In some embodiments, the apparatus 1200 further includes: an acquisition module configured to: after receiving a first message sent by the second terminal, acquire the first UE ID from the first message.

[0448] In some embodiments, the first indication information indicates a first identifier of a layer 2 address for the second terminal.

[0449] In some embodiments, the first message or the first report includes at least one of the following information:

[0450] second indication information, where the second indication information is used to indicate a second UE ID of the second terminal;

[0451] The third indication information is used to indicate that the second UE ID needs to establish a relay connection.

[0452] In some embodiments, the first indication information is carried in first adaptation layer configuration information, or carried in dedicated configuration information.

[0453] In some embodiments, the receiving module 1202 is further configured to:

[0454] A second identifier sent by the network device is received, where the second identifier is an adaptation layer identifier of the first terminal, and the second identifier is carried in first adaptation layer configuration information, second adaptation layer configuration information, or dedicated configuration information.

[0455] In some embodiments, the sending module 1201 is further configured to: send the first message to the network device when sending the first report to the network device, wherein the first message carries the first identifier.

[0456] In some embodiments, the receiving module 1202 is further configured to receive a second message sent by the network device, where the second message carries the first identifier;

[0457] The sending module 1201 is further configured to forward the second message to the second terminal based on the first identifier.

[0458] In some embodiments, the first relay terminal uses different logical channels to carry messages using the adaptation layer and messages not using the adaptation layer.

[0459] In some embodiments, the first relay terminal uses the same logical channel to carry messages using the adaptation layer and messages not using the adaptation layer.

[0460] In some embodiments, the protocol stack of the logical channel is changed from not using the adaptation layer to using the adaptation layer through at least one of the following indications:

[0461] Interaction through signaling;

[0462] Instructions via protocol header.

[0463] In some embodiments, the signaling includes at least one of the following:

[0464] a first signaling sent by the first relay terminal to the second relay terminal;

[0465] The first relay terminal receives second signaling from the second relay terminal.

[0466] In some embodiments, the protocol message header includes at least one of the following:

[0467] Radio link control RLC layer message header, media access control MAC layer message header, MAC layer sub-message header.

[0468] The embodiment of the present application also provides a wireless communication device, which is applied to a first terminal, such as Fig.13 As shown, including:

[0469] The sending module 1301 is configured to send the first message or the first report to the network device after receiving the first message sent by the second terminal. The first message or the first report carries a first identifier, and the first identifier is the adaptation layer identifier allocated by the first terminal to the second terminal.

[0470] In some embodiments, the apparatus 1300 further includes: an establishing module configured to establish a connection with the network device before sending the first message or the first report to the network device.

[0471] In some embodiments, the apparatus 1300 further includes: a receiving module,

[0472] The sending module 1301 is further configured to send a first report to the network device when the first message is sent to the network device, wherein the first report is used to trigger the network device to send configuration information to the first terminal;

[0473] The receiving module is configured to receive the configuration information sent by the network device.

[0474] In some embodiments, the apparatus 1300 further includes: an allocation module configured to allocate the first identifier to the second terminal based on the first configuration information.

[0475] In some embodiments, the first terminal is a first relay terminal and the second terminal is a second relay terminal;

[0476] The first identifier indicated by the first indication information is an adaptation layer identifier allocated by the first relay terminal to the second relay terminal.

[0477] In some embodiments, the apparatus 1300 further includes: a receiving module configured to receive second configuration information sent by the network device, wherein the second configuration information includes:

[0478] fourth indication information, where the fourth indication information is used to indicate that the adaptation layer identifier of the second relay terminal remains the first identifier; or,

[0479] Fifth indication information, where the fifth indication information is used to indicate that the adaptation layer identifier of the second relay terminal is replaced from the first identifier to the second identifier.

[0480] In some embodiments, the first terminal is a first relay terminal, the second terminal is a remote terminal,

[0481] The first identifier is an adaptation layer identifier allocated by the first relay terminal to the remote terminal.

[0482] In some embodiments, there is at least a second relay terminal between the first relay terminal and the network device.

[0483] The communication between the first relay terminal and the network device is forwarded at least through the second relay terminal.

[0484] In some embodiments, the first identifier is modified by the second relay terminal to a fourth identifier, and the fourth identifier is an adaptation layer identifier allocated by the second relay terminal to the remote terminal.

[0485] In some embodiments, the apparatus 1300 further includes: a receiving module configured to receive second configuration information sent by the network device, wherein the second configuration information includes:

[0486] fourth indication information, where the fourth indication information is used to indicate that the adaptation layer identifier of the remote terminal remains the first identifier; or

[0487] Fifth indication information, the fifth indication information is used to indicate that the adaptation layer identifier of the remote terminal is replaced from the first identifier to a third identifier; the third identifier is the adaptation layer identifier allocated by the network device to the remote terminal; or

[0488] The sixth indication information is used to indicate that the adaptation layer identifier of the remote terminal is replaced from the first identifier to a fourth identifier, and the fourth identifier is the adaptation layer identifier allocated by the second relay terminal to the remote terminal.

[0489] In some embodiments, the receiving module is further configured to receive a second message sent by the network device, where the second message carries an adaptation layer identifier of the second terminal;

[0490] The sending module 1301 is further configured to forward the second message to the second terminal based on the adaptation layer identifier of the second terminal.

[0491] In some embodiments, the first relay terminal uses different logical channels to carry messages using the adaptation layer and messages not using the adaptation layer.

[0492] In some embodiments, the first relay terminal uses the same logical channel to carry messages using the adaptation layer and messages not using the adaptation layer.

[0493] In some embodiments, the protocol stack of the logical channel is changed from not using an adaptation layer to using an adaptation layer through at least one of the following indications: through signaling interaction; through indications in a protocol message header.

[0494] In some embodiments, the signaling includes at least one of the following:

[0495] a first signaling sent by the first relay terminal to the second relay terminal;

[0496] The first relay terminal receives second signaling from the second relay terminal.

[0497] In some embodiments, the protocol message header includes at least one of the following:

[0498] Radio link control RLC layer message header, media access control MAC layer message header and MAC layer sub-message header.

[0499] Those skilled in the art should understand that the relevant description of the above-mentioned wireless communication device in the embodiment of the present application can be understood by referring to the relevant description of the wireless communication method in the embodiment of the present application.

[0500] Fig.14 1400 is a schematic structural diagram of a communication device 1400 provided in an embodiment of the present application. The communication device may be a terminal device or a network device. Fig.14 The communication device 1400 shown includes a processor 1410, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0501] Alternatively, if Fig.14 As shown, the communication device 1400 may further include a memory 1420. The processor 1410 may call and run a computer program from the memory 1420 to implement the method in the embodiment of the present application.

[0502] The memory 1420 may be a separate device independent of the processor 1410 , or may be integrated into the processor 1410 .

[0503] Alternatively, if Fig.14 As shown, the communication device 1400 may further include a transceiver 1430, and the processor 1410 may control the transceiver 1430 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0504] The transceiver 1430 may include a transmitter and a receiver. The transceiver 1430 may further include an antenna, and the number of the antennas may be one or more.

[0505] Optionally, the communication device 1400 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 1400 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application, which will not be described again for the sake of brevity.

[0506] Fig.15 It is a schematic structural diagram of the chip of an embodiment of the present application. Fig.15 The chip 1500 shown includes a processor 1510, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0507] Alternatively, if Fig.15 As shown, the chip 1500 may further include a memory 1520. The processor 1510 may call and run a computer program from the memory 1520 to implement the method in the embodiment of the present application.

[0508] The memory 1520 may be a separate device independent of the processor 1510 , or may be integrated into the processor 1510 .

[0509] Optionally, the chip 1500 may further include an input interface 1530. The processor 1510 may control the input interface 1530 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0510] Optionally, the chip 1500 may further include an output interface 1540. The processor 1510 may control the output interface 1540 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0511] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0512] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0513] Fig.16 1 is a schematic block diagram of a communication system 1600 provided in an embodiment of the present application. Fig.16 As shown, the communication system 1600 includes a terminal device 1610 and a network device 1620 .

[0514] Among them, the terminal device 1610 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1620 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0515] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0516] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0517] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0518] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0519] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0520] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0521] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0522] The embodiment of the present application also provides a computer program.

[0523] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0524] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0525] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0526] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0527] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0528] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0529] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0530] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wireless communication method, the method comprising: After receiving the first message sent by the second terminal, the first terminal sends a first report to the network device; The first terminal receives first indication information sent by the network device, where the first indication information is used to indicate a first identifier; The first terminal determines, based on the first indication information, that the adaptation layer identifier of the second terminal is the first identifier.

2. The method according to claim 1, wherein: Before sending the first report to the network device, the method further includes: The first terminal establishes a connection with the network device.

3. The method according to claim 1 or 2, wherein: The first terminal is a first relay terminal, and the second terminal is a second relay terminal; The first identifier indicated by the first indication information is the adaptation layer identifier of the second relay terminal.

4. The method according to claim 1 or 2, wherein: The first terminal is a first relay terminal, the second terminal is a remote terminal, The first identifier indicated by the first indication information is the adaptation layer identifier of the remote terminal.

5. The method according to claim 1 or 2, wherein: The first indication information indicates a first identifier of a layer 2 address for the second terminal.

6. The method according to claim 5, wherein: The first report includes: Second indication information, where the second indication information is used to indicate a second user equipment identifier UEID of the second terminal.

7. The method according to claim 1 or 2, wherein: In a case where the first terminal sends the first report to the network device, the method further includes: The first terminal sends the first message to the network device, where the first message carries the first identifier.

8. The method according to claim 1 or 2, wherein: The method further comprises: The first terminal receives a second message sent by the network device, where the second message carries the first identifier; The first terminal forwards the second message to the second terminal based on the first identifier.

9. The method according to claim 3, wherein: The first relay terminal uses different logical channels to carry messages using the adaptation layer and messages not using the adaptation layer.

10. A terminal device, comprising: A processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 9.

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