Method for serving remote terminal in MHRN, configuration method, device and equipment

Abstract

The invention discloses a method for serving a far-end terminal in a multi-hop relay network MHRN, a configuration method, a configuration device and equipment, and belongs to the technical field of communication, and the method for serving the far-end terminal in the MHRN comprises the steps that a first relay terminal receives first information from a first far-end terminal, generates second information according to the first information, and sends the second information to the first far-end terminal; the second information is sent through the MHRN; the first relay terminal obtains second information, generates first information according to the second information, and sends the first information to a first remote terminal; wherein the first information is information sent or received through a single-hop relay network; the second information is information sent or received through the MHRN.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a method, a configuration method, an apparatus and a communication device for serving a remote terminal in a multi-hop relay network (MHRN). Background Art

[0002] In order to expand the specifics of wireless communication, MHRN is being studied in related technologies. However, before the deployment of MHRN, there may already be a large number of remote user equipment (UE) that can only perform single-hop relay forwarding in the market, hereinafter referred to as old remote UE, such as: remote UE of layer (Layer, L) 2 or L3 UE to network (UE to Network, U2N) in R17, remote UE of L 2 or L3 U2N in R18, remote UE of L2 or L3 UE to UE (UE to UE, U2U) in R18.

[0003] However, the MHRN is not compatible with the old version remote UE, so that the MHRN cannot provide services for the old version remote UE. Summary of the invention

[0004] The embodiments of the present application provide a method, a configuration method, an apparatus and a device for serving a remote terminal in an MHRN, so that the MHRN can provide services for an old version remote UE.

[0005] In a first aspect, a method for serving a remote terminal in an MHRN is provided, the method comprising:

[0006] The first relay terminal receives first information from the first remote terminal, generates second information according to the first information, and sends the second information through the MHRN;

[0007] The first relay terminal acquires the second information, generates the first information according to the second information, and sends the first information to the first remote terminal;

[0008] The first information is information sent or received via a single-hop relay network; the second information is information sent or received via an MHRN.

[0009] In a second aspect, a configuration method is provided, the method comprising:

[0010] The network side device sends first configuration information to the first relay terminal, where the first configuration information is used by the first relay terminal to provide communication services to the first remote terminal through the multi-hop relay network MHRN. The first remote terminal is a terminal that performs wireless communication access based on a single-hop relay network protocol.

[0011] In a third aspect, a device for serving a remote terminal in an MHRN is provided, which is applied to a first relay terminal, and includes at least one of the following:

[0012] A first processing module, configured to receive first information from a first remote terminal, generate second information according to the first information, and send the second information through the MHRN;

[0013] A second processing module, configured to obtain second information, generate first information according to the second information, and send the first information to a first remote terminal;

[0014] The first information is information sent or received via a single-hop relay network; the second information is information sent or received via an MHRN.

[0015] In a fourth aspect, a configuration device is provided, which is applied to a network side device, and the device includes:

[0016] The first sending module is used to send first configuration information to the first relay terminal, where the first configuration information is used by the first relay terminal to provide communication services for the first remote terminal through the multi-hop relay network MHRN, and the first remote terminal is a terminal for wireless communication access based on the single-hop relay network protocol.

[0017] In a fifth aspect, a relay terminal is provided, which includes a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0018] In a sixth aspect, a relay terminal is provided, including a processor and a communication interface;

[0019] The communication interface is used to receive first information from a first remote terminal, the processor is used to generate second information according to the first information, and the communication interface is further used to send the second information through the MHRN; or,

[0020] The processor is used to obtain second information and generate first information according to the second information, and the communication interface is used to send the first information to the first remote terminal;

[0021] The first information is information sent or received via a single-hop relay network; the second information is information sent or received via an MHRN.

[0022] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0023] In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used to send first configuration information to a first relay terminal, and the first configuration information is used for the first relay terminal to provide communication services to a first remote terminal through a multi-hop relay network MHRN, and the first remote terminal is a terminal for wireless communication access based on a single-hop relay network protocol.

[0024] In a ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0025] In the tenth aspect, a wireless communication system is provided, comprising: a relay terminal and a network side device, wherein the relay terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0026] In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the second aspect.

[0027] In the twelfth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the method for serving a remote terminal in the MHRN as described in the first aspect, or to implement the steps of the configuration method as described in the second aspect.

[0028] In one implementation of the embodiment of the present application, the first relay terminal receives the first information from the first remote terminal, generates the second information according to the first information, and sends the second information through the MHRN; so that the old version remote UE can send the first information to the first relay terminal through the single-hop relay network, and the first relay terminal can generate the second information that can be transmitted in the MHRN according to the first information, so that the MHRN can be used to provide a multi-hop relay service for the old version remote UE;

[0029] In another implementation of the embodiment of the present application, the first relay terminal obtains second information, generates first information based on the second information, and sends the first information to the first remote terminal; so that the second information whose destination address is the old version remote UE transmitted through MHRN can generate first information that can be transmitted through a single-hop relay network through the first relay terminal, and send the first information to the old version remote UE. In this way, it is possible to use MHRN to provide multi-hop relay services for old version remote UEs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1a is a schematic diagram of the structure of a multi-hop L2 / L3 U2N relay network to which the embodiments of the present application can be applied;

[0031] Figure 1b This is one of the structural diagrams of a multi-hop L2 / L3 U2U relay network that can be applied in the embodiments of the present application;

[0032] Figure 1c This is the second structural diagram of a multi-hop L2 / L3 U2U relay network that can be applied in the embodiments of the present application;

[0033] Figure 2a It is a schematic diagram of the structure of a single-hop L2 / L3 U2N relay network;

[0034] Figure 2b is a schematic diagram of a user plane protocol stack of a single-hop L2 U2N relay network;

[0035] Figure 2c is a schematic diagram of the control plane protocol stack of a single-hop L2 U2N relay network;

[0036] Figure 3a It is a schematic diagram of the structure of a single-hop L2 / L3 U2U relay network;

[0037] Figure 3b is a schematic diagram of a user plane protocol stack of a single-hop L2 U2U relay network;

[0038] Figure 3c is a schematic diagram of a control plane protocol stack for a single-hop L2 U2U relay network;

[0039] Figure 4a It is a schematic diagram of the structure of a multi-hop L2 / L3 U2N relay network;

[0040] Figure 4b is a schematic diagram of the structure of a multi-hop L2 / L3 U2U relay network;

[0041] Figure 5 is a flowchart of a method for serving a remote terminal in an MHRN provided by an embodiment of the present application;

[0042] Figure 6 is a flow chart of a configuration method provided in an embodiment of the present application;

[0043] Figure 7 It is a structural diagram of a device for serving a remote terminal in an MHRN provided in an embodiment of the present application;

[0044] Figure 8 It is a structural schematic diagram of a configuration device provided in an embodiment of the present application;

[0045] Fig. 9 It is a structural diagram of a communication device provided in an embodiment of the present application;

[0046] Fig.10 It is a schematic diagram of the hardware structure of a relay terminal provided in an embodiment of the present application;

[0047] Fig.11 It is a structural diagram of a network side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0049] The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0050] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0051] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6 th Generation, 6G) communication system.

[0052] Figure 1a to Figure 1cThe block diagram of the wireless communication system of three MHRNs applicable to the embodiment of the present application is shown. The wireless communication system includes a terminal and a network side device, and the terminal is further divided into a remote terminal and a relay terminal, and the number of relay terminals in the same MHRN is at least two. Among them, the terminal can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home equipment with wireless communication function, such as a refrigerator, a television, a washing machine or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a self-service machine and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of terminal is not limited in the embodiments of the present application. The network side device may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AS) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B, a Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0053] In the related art, there are several single-hop relay networks:

[0054] 1. Single-hop Layer 2 (L2) and Layer 3 (L3) U2N relay

[0055] Single-hop L2 / L3 U2N relay has been defined in R17 and will be improved in R18. Related discussions are ongoing. Sidelink refers to the wireless link between UE and UE in NR / LTE. Two UE can achieve direct data transmission between them through the sidelink. The wireless link between the sidelinks is also called the proximity communication (PC5) link, which runs the PC5 protocol. In related technologies, the use of UE to provide relay services between UE and network-side devices will be studied, for example: Figure 2a As shown, the UE providing relay service is called relay UE, and the UE provided with ultimate service is called remote UE. The link between the relay UE and the remote UE is a PC5 link, running the sidelink interface protocol, and the link between the relay UE and the base station is a Uu link, running the Uu link protocol.

[0056] The radio interface control plane of the sidelink has the PC5 Radio Resource Control (RRC) protocol, which runs on the Packet Data Convergence Protocol (PDCP) layer and the Radio Link Control (RLC) layer, and the bottom is the Medium Access Control (MAC) layer and the physical layer. The radio interface user plane of the sidelink includes the Service Data Adaptation Protocol (SDAP), PDCP, RLC, MAC and physical layer from top to bottom.

[0057] The sidelink U2N relay includes L2 U2N relay and L3 U2N relay. The former refers to the relay UE forwarding the data of the remote UE at layer 2, and the latter refers to the relay UE forwarding the data of the remote UE at layer 3.

[0058] 1) For L2 U2N relay, its user plane protocol stack is as follows Figure 2b As shown, the control plane protocol stack is as follows Figure 2cAs shown. L2U2Nrelay introduces the Sidelink Relay Adaptation Protocol (SRAP) layer for data routing, which carries the local identification information of the remote UE (such as the local UE ID) and the radio bearer identification information between the remote UE and the base station. The relay UE maps the input logical channel to the output logical channel for the forwarded data based on this. For the uplink protocol data unit (PDU) forwarded to the base station by the relay UE, the remote UE adds a SRAP header to the PDU to generate a SRAP PDU. After receiving the SRAP PDU, the relay UE forwards it according to the SRAP header. After receiving the SRAP PDU, the base station determines the corresponding PDCP entity according to the information carried in the SRAP header, removes the SRAP header, and submits the corresponding service data unit (SDU) to the PDCP entity. For the downlink PDU forwarded to the remote UE via the relay UE, the base station adds an SRAP header to the PDU and generates an SRAP PDU. After receiving the SRAP PDU, the relay UE forwards it according to the SRAP header. After receiving the SRAPPDU, the remote UE determines the corresponding PDCP entity according to the information carried in the SRAP header, removes the SRAP header and submits the corresponding SDU to the PDCP entity.

[0059] 2) For L3 U2N relay, data is forwarded at the Internet Protocol (IP) layer, which will not be described here.

[0060] 2. Single-hop L2 / L3 U2U relay

[0061] The single-hop L2 / L3 U2U related specifications belong to the scope of R18 and are currently under discussion. The relay transmission network structure between UE to UE (U2U) is as follows: Figure 3a As shown, it includes: remote UE A, remote UE B and relay UE. The communication information sent by remote UE A to remote UE B must first be sent to the relay UE, which is then forwarded to remote UE B. Similarly, the communication information sent by remote UE B to remote UE A must first be sent to the relay UE, which is then forwarded to remote UE A.

[0062] There are two types of U2U relays. One type forwards data at layer 2, called L2 U2U relay, and the other type forwards data at layer 3, called L3 U2U relay. The following is a brief introduction to each type:

[0063] 1) For L2 U2U relay, its user plane protocol stack is as follows Figure 3b As shown, the control plane protocol stack is as follows Figure 3c As shown. Regardless of the protocol stack of the user plane or the protocol stack of the control plane, the remote UE adds an adaptation (ADAPT) protocol layer between the PC5-PDCP layer and the PC5-RLC layer. The adaptation protocol layer is used to generate, receive and forward data packets:

[0064] i) Generate an adaptation layer data packet: The transmitting remote UE determines the adaptation protocol header according to the U2U relay routing configuration, adds the adaptation protocol header to the PDCP PDU from the upper layer, and generates an adaptation layer data packet. The adaptation protocol header at least includes the identification information of the receiving remote UE (such as address information or ID information, etc.) and the identification information of the radio bearer for identifying the data information carried (such as the ID information of the radio bearer);

[0065] ii) Receiving an adaptation layer data packet: After receiving an adaptation layer data packet, the receiving remote UE determines whether it is the destination receiving terminal according to the U2U relay adaptation layer configuration, including its own identification information and the radio bearer identification configuration between it and the transmitting UE. If the identification information of the received adaptation data packet completely matches its own identification information, it determines that it is the destination remote UE of the data packet, and then determines the corresponding upper layer protocol entity according to the radio bearer identification information carried by the data packet, and finally removes the adaptation layer protocol header and sends the data packet to the corresponding upper layer protocol body.

[0066] 2) For L3 U2U relay, the data forwarding of layer 3 relay occurs on layer 2, and the radio access layer protocol of the relay UE does not handle the routing of the data packet to be forwarded. One possible implementation is that when the relay UE receives a data packet to be forwarded sent by a remote UE, it submits the data packet to be forwarded to the upper layer, such as the IP layer, and then the IP layer can determine the destination remote UE of the data packet to be forwarded based on the destination IP address carried in the IP header of the data packet, and send the data packet to be forwarded to the destination remote UE.

[0067] In the embodiments of the present application, MHRN is involved, such as a multi-hop L2 / L3 U2N network and a multi-hop L2 / L3 U2U network.

[0068] like Figure 4a As shown, in a multi-hop L2 / L3 U2N network, a remote UE can establish a wireless connection with a base station through multiple L2 / L3 U2N relay UEs connected in series. The uplink and downlink messages of the remote UE need to be relayed by multiple L2 / L3 U2N relay UEs to complete the transmission between the remote UE and the base station.

[0069] like Figure 4bAs shown, in a multi-hop L2 / L3 U2U network, a source remote UE can establish a wireless connection with a target remote UE through multiple L2 / L3 U2U relay UEs connected in series, and message transmission between the source remote UE and the target remote UE can only be completed after being relayed by multiple L2 / L3 U2U relay UEs.

[0070] It is worth noting that in multi-hop L2 / L3 U2N networks and multi-hop L2 / L3 U2U networks, there will still be an adaptation layer to guide data forwarding and end-to-end data packet identification. The header format and routing mechanism of the adaptation layer should be modified as necessary based on the single-hop L2 / L3U2N network and single-hop L2 / L3 U2U network. For example, the multi-hop L2 / L3 U2N / U2U relay network may adopt a different SRAP protocol header format from the single-hop U2N / U2U network in R17 / R18 to adapt to the routing requirements of the multi-hop network. In addition, in MHRN and single-hop relay networks, the same message can carry different message contents or use messages in different formats to adapt to the multi-hop forwarding of messages in the multi-hop network and the need to transmit corresponding response messages.

[0071] That is, the multi-hop L2 / L3 U2N network and the multi-hop L2 / L3 U2U network in the related art cannot provide services for UEs that access the communication network through a single-hop relay protocol.

[0072] The embodiment of the present application provides a method for serving a remote terminal that accesses a communication network through a single-hop relay protocol in an MHRN. In the embodiment of the present application, the remote terminal that accesses a communication network through a single-hop relay protocol may be a legacy U2N remote UE, a legacy U2U remote UE, etc. For the convenience of the specification, it is referred to as an old version remote UE.

[0073] For example: Figure 1a As shown, the legacy U2N remote UE is connected to the base station through at least two U2N relay terminals; Figure 1b As shown, a legacy U2U remote UE is connected to another legacy U2U remote UE through at least two U2U relay terminals; Figure 1c As shown, the legacy U2U remote UE is communicatively connected with the U2U remote UE via at least two U2U relay terminals.

[0074] For the sake of convenience, the following nouns or terms in the embodiments of the present application are first explained:

[0075] 1) MHRN, including: multi-hop L2 U2U network, multi-hop L3 U2U network, multi-hop L2 U2N network and multi-hop L3 U2N network;

[0076] 2) The first remote terminal is a terminal accessed based on a single-hop relay network protocol, i.e., legacy U2U remote UE, legacy U2N remote UE and other legacy remote UEs;

[0077] 3) The first node is a target serving base station or a target remote terminal to which the first remote terminal is connected via the MHRN;

[0078] 4) A first relay terminal is a relay terminal in the MHRN that provides an access service based on a single-hop relay network protocol for the first remote terminal;

[0079] 5) A second relay terminal, which is a relay terminal adjacent to the first relay terminal in the MHRN;

[0080] 6) The third relay terminal is a relay terminal that has a wireless connection with the first node or supports establishing a wireless connection.

[0081] 7) a first discovery message, which may also be referred to as a first communication request message, such as a direct communication request, used to establish a wireless link between the first remote terminal and the first node, wherein the first discovery message is a message sent or received based on a single-hop relay network;

[0082] 8) A second discovery message, which may also be referred to as a second communication request message, has the same function as the first discovery message, but is a message sent or received based on the MHRN.

[0083] 9) A first response message, which is a response message corresponding to the first discovery message and is used to carry response information from the first node. Optionally, when the first node is a legacy U2U remote UE, the legacy U2U remote UE feeds back a first response message upon receiving the first discovery message; when the first node is a U2U remote UE or a base station, the first node feeds back a second response message upon receiving the second discovery message, and the second response message is forwarded to the first relay terminal via the MHRN, and the first relay terminal generates a first response message based on the second response message and then sends it to the first remote terminal;

[0084] 10) a second response message, the second response message being a response message corresponding to the second discovery message, being received by the first relay terminal through the MHRN and being used to carry response information from the first node. Optionally, when the first node is a U2U remote UE or a base station, the U2U remote UE or the base station sends the second response message to the first relay terminal through the MHRN upon receiving the second discovery message;

[0085] 11) A fourth response message, which means that when the third relay terminal receives the second discovery message, if the third relay terminal has a wireless connection with the first node, or supports establishing a wireless connection, the fourth response message can be fed back to instruct the first relay terminal and the first node to continue the relevant signaling process of establishing a Uu connection for the first remote terminal;

[0086] 12) The third response message refers to the fact that since the first remote terminal is a terminal accessed based on the single-hop relay network protocol, and the above-mentioned fourth response message is a message transmitted through the MHRN, the fourth response message needs to be generated by the first relay terminal to instruct the first remote terminal to continue the relevant signaling process of establishing the Uu connection, so that the third response message is received and recognized by the first remote terminal.

[0087] In combination with the accompanying drawings, the method for serving a remote terminal in MHRN, the configuration method, the device for serving a remote terminal in MHRN, the configuration device and the communication equipment provided in the embodiments of the present application are described in detail through some embodiments and their application scenarios.

[0088] See also Figure 5 The embodiment of the present application provides a method for serving a remote terminal in an MHRN, and the execution subject thereof may be a first relay terminal, such as Figure 5 As shown, the method includes at least one of the following steps:

[0089] Step 501: A first relay terminal receives first information from a first remote terminal, generates second information according to the first information, and sends the second information through an MHRN.

[0090] Step 502: The first relay terminal obtains second information, generates first information according to the second information, and sends the first information to the first remote terminal.

[0091] The first information is information sent or received via a single-hop relay network; the second information is information sent or received via an MHRN.

[0092] It should be noted that in the embodiment of the present application, the method of serving a remote terminal in MHRN includes step 501 and step 502. In some implementations, the first relay terminal may only execute step 501 or only execute step 502, which is not specifically limited here.

[0093] In some embodiments, the first information may be understood as including at least one item of data, signaling, and other information sent or received through a single-hop relay network; the second information may be understood as including at least one item of data, signaling, and other information sent or received through the MHRN.

[0094] It is worth noting that the first information and the second information may be different in at least one of format and content.

[0095] For example, assuming that the first information includes a first local identifier for identifying a first remote terminal in a single-hop relay network, and the second information includes a second local identifier for identifying the first remote terminal in an MHRN. Based on the fact that the number of relay terminals in an MHRN is greater than that in a single-hop relay network, the second local identifier needs to be longer than the first local identifier in order to uniquely identify the first remote terminal among a greater number of terminals.

[0096] In some implementations, after the first remote terminal accesses the first relay terminal through the single-hop relay network protocol, the first remote terminal can send first information to the first relay terminal through the single-hop relay network, and then the first relay terminal generates second information based on the first information and sends the second information through the MHRN. In this way, it is possible to provide information sending services for old version remote UEs through the MHRN.

[0097] In other embodiments, after the first remote terminal accesses the first relay terminal through the single-hop relay network protocol, the node in the MHRN can send the second information to the first relay terminal, and when the second information passes through the first relay terminal, the corresponding first information is generated, and the first information is sent to the first remote terminal through the single-hop relay network. In this way, the information receiving service is provided for the old version remote UE through the MHRN.

[0098] It is worth mentioning that based on the above-mentioned provision of information reception and information sending services for legacy remote UEs through MHRN, information interaction processes such as business data interaction and signaling interaction can be realized between legacy remote UEs and other nodes in MHRN, target service base stations or target remote terminals.

[0099] As an optional implementation manner, in a case where the first relay terminal receives first information from the first remote terminal, if the first information includes a first discovery message or a first communication request message, the second information generated according to the first information includes a second discovery message or a second communication request message;

[0100] The first discovery message or the first communication request message is used to establish a wireless link between the first remote terminal and a first node, and the first node is a target service base station or a target remote terminal of the first remote terminal.

[0101] Method 1

[0102] In a case where the first information includes a first discovery message or a first communication request message from the first remote terminal, the second information generated according to the first information includes: a second discovery message or a second communication request message.

[0103] For example: the first remote terminal sends a first discovery message to request the establishment of a wireless link between the first remote terminal and the first node, assuming that the first node is a base station or a terminal accessed based on the MHRN protocol. At this time, the first discovery message is received by the first relay node through the single-hop relay network. When the first relay node determines that there is no or no support for establishing a wireless connection between the first relay node and the first node according to the first discovery message, it generates a second discovery message corresponding to the first discovery message and forwards it to the next hop relay node in the MHRN, such as the second relay node, until it reaches the first node, or reaches a third relay terminal that has or supports establishing a wireless connection with the first node.

[0104] In some implementations, when the first node is a base station or a remote terminal accessed based on a multi-hop relay network protocol, when the second discovery message arrives at the first node, the first node feeds back a second response message based on the second discovery message.

[0105] It should be noted that if Figure 1b As shown, when the first node is accessed based on a single-hop relay network protocol, the relay terminal in the MHRN that provides access services for the first node can generate a first discovery message based on the second discovery message, and send the first discovery message to the first node. At this time, the first node can feedback a first response message based on the first discovery message. The relay terminal that provides access services for the first node generates a second response message based on the first response message from the first node, and sends it to the first relay terminal that provides access services for the first remote terminal through the MHRN. The first relay terminal can generate a first response message based on the second response message, and send it to the first remote terminal.

[0106] In other embodiments, in L2 U2N MHRN or L3 U2N MHRN, when the second discovery message reaches the third relay terminal, and the third relay terminal has or supports establishing a wireless connection with the first node, the third relay terminal may feedback a fourth response message according to the second discovery message. For example: assuming that the first remote terminal is UE A, the first relay terminal is UE B, the first node is the target base station, and the third relay terminal is UE D, when the second discovery message is sent to UE D via MHRN, if UE D has any wireless connection such as Uu connection, PC connection, etc. with the target base station, UE D feedbacks a fourth response message, and the fourth response message is sent to UE B via MHRN to instruct UE B to continue the relevant signaling process of establishing a Uu connection for UE A with the target base station, and UE B generates a third response message according to the fourth response message, and sends it to UE A to instruct UE A to continue the relevant signaling process of establishing a Uu connection.

[0107] Optionally, when receiving the second discovery message, if there is no wireless connection with the first node, the third relay terminal may initiate a process of establishing a wireless connection with the first node according to the second discovery message, and feed back a fourth response message.

[0108] It should be noted that, for the first communication request message, its transmission and processing process is the same as the transmission and processing process of the above-mentioned first discovery message, and will not be repeated here.

[0109] In this implementation manner, the first relay terminal may initiate a wireless connection establishment process for the legacy remote UE based on the received first discovery message or first communication request message from the legacy remote UE.

[0110] As an optional implementation, in the case where the first relay terminal receives the first information from the first remote terminal, if the first information includes a protocol data unit SRAPPDU of a sidelink relay adaptation protocol in a first format, the second information generated according to the first information includes a SRAP PDU in a second format;

[0111] The first format is adapted to the single-hop relay network, and the second format is adapted to the MHRN.

[0112] Method 2

[0113] In the case where the first information includes a SRAP PDU in a first format from the first remote terminal, the second information generated according to the first information includes: a SRAP PDU in a second format.

[0114] Optionally, the SRAP PDU in the first format includes a first format SRAP header, and the first format SRAP header includes at least one of the following:

[0115] A first source remote terminal identification field, carrying a first local identification of a source remote terminal of the SRAP PDU of the first format, for example, in an L2 U2N MHRN or L2 U2U MHRN application scenario, the first format SRAP header may carry a first local identification of a source remote terminal of the corresponding SRAP PDU, and the first local identification may be a local UE ID applicable to a single-hop relay network;

[0116] A first target remote terminal identification field, carrying a first local identification of the target remote terminal of the SRAP PDU of the first format, for example, in an L2 U2U MHRN application scenario, the first format SRAP header may carry a first local identification of the target remote terminal of the corresponding SRAP PDU, and the first local identification may be a local UEID applicable to a single-hop relay network;

[0117] End-to-end bearer ID, for example, in the L2 U2N MHRN or L2 U2U MHRN application scenario, the first format SRAP header may carry the end-to-end radio bearer ID (e2eRB ID) of the corresponding SRAP PDU;

[0118] A first path identifier, used to identify a path identifier from a source remote terminal of the SRAP PDU in the first format to a target remote terminal of the SRAP PDU in the first format, for example, in an L2 U2U MHRN application scenario, the first format SRAP header may carry a path identifier from a source remote terminal to a target remote terminal of the corresponding SRAP PDU;

[0119] or,

[0120] The SRAP PDU in the second format includes a SRAP header in the second format, and the SRAP header in the second format includes at least one of the following:

[0121] A second source remote terminal identification field, carrying a second local identification of the source remote terminal of the SRAP PDU in the second format, for example, in an L2 U2N MHRN or L2 U2U MHRN application scenario, the first SRAP header may carry a second local identification of the source remote terminal corresponding to the SRAPPDU, and the second local identification may be a terminal identification applicable to a multi-hop relay network;

[0122] A second target remote terminal identification field, carrying a second local identification of the target remote terminal of the SRAP PDU in the second format. For example, in an L2 U2U MHRN application scenario, the second format SRAP header may carry a second local identification of the target remote terminal corresponding to the SRAP PDU, and the second local identification may be a terminal identification applicable to a multi-hop relay network;

[0123] The sending direction of the SRAP PDU in the second format, for example, in the L2 U2N MHRN application scenario, the sending direction of the corresponding SRAP PDU may be carried in the second format SRAP header, such as upstream or downstream;

[0124] The end-to-end bearer identifier, for example, can fill the corresponding information field of the second format SRAP header according to the e2eRB ID carried in the corresponding information field of the first format SRAP header;

[0125] The second path identifier is used to forward the SRAPPDU in the second format in the MHRN. For example, in the L2 U2U MHRN application scenario, the second path identifier can be used to forward the corresponding SRAP PDU in the L2 U2U MHRN.

[0126] It is worth noting that the second format SRAP header and the first format SRAP header satisfy at least one of the following:

[0127] The length of at least one information field of the second format SRAP header is different from the length of the corresponding information field of the first format SRAP header, for example, the length of the first source remote terminal identification field is shorter than the length of the second source remote terminal identification field, that is, the second local identification in the second source remote terminal identification field is longer than the first local identification in the first source remote terminal identification field;

[0128] At least one information field of the second format SRAP header has a different value from a corresponding information field of the first format SRAP header, for example, the first path identifier is different from the second path identifier;

[0129] At least one information field of the second format SRAP header and a corresponding information field of the first format SRAP header are allocated by different nodes, for example, the first local identifier is allocated by the base station, and the second local identifier is allocated by the first relay terminal;

[0130] The second format SRAP header has at least one third information field, and the at least one third information field has no corresponding information field in the first format SRAP header, such as the second format SRAP header includes an information field corresponding to the sending direction of the second format SRAP PDU, while the first format SRAP header does not include an information field corresponding to the sending direction of the second format SRAP PDU;

[0131] There is at least one fourth information field in the first format SRAP header, and the at least one fourth information field has no corresponding information field in the second format SRAP header. For example, some information in the SRAP header of the SRAP PDU transmitted through a single-hop network may not be required in the MHRN. In this case, there may be no information field corresponding to the part of the information in the second format SRAP header.

[0132] In some implementations, the information fields in the first format SRAP header and the second format SRAP header are implementation-configured or protocol-agreed. In the process of generating the second format SRAP PDU according to the first format SRAP PDU, information can be extracted from the corresponding information field of the first format SRAP header, and the information can be processed to fill the corresponding information field in the second format SRAP header.

[0133] For example: extract the first local identifier of the source remote terminal of the first format SRAP PDU from the first source remote terminal identifier field of the first format SRAP header, add an additional field on the basis of the first local identifier to generate a second local identifier, and fill the second local identifier into the second source remote terminal identifier field of the second format SRAP header.

[0134] Optionally, the filling value of the above additional field may be predefined by the protocol or preconfigured by the network, which is not specifically limited here.

[0135] Of course, in addition to the above-mentioned method of adding additional fields, other methods can also be used to generate a corresponding second local identifier based on the first local identifier. For example, the first local identifier is a short identifier, the second local identifier is a long identifier, and the target association information is used to indicate the association relationship between the short identifier and the long identifier of the same remote terminal.

[0136] In some other implementations, generating the SRAPPDU of the second format according to the SRAP PDU of the first format includes: modifying the first format SRAP header carried by the SRAP PDU of the first format to the second format SRAP header carried by the SRAPPDU of the second format;

[0137] or,

[0138] Generating the SRAP PDU of the first format according to the SRAP PDU of the second format includes: modifying the SRAP header of the second format carried by the SRAP PDU of the second format to the SRAP header of the first format carried by the SRAP PDU of the first format;

[0139] The first format SRAP header is applicable to a single-hop relay network, and the second format SRAP header is applicable to an MHRN.

[0140] In this way, the conversion between the SRAP PDU in the first format and the SRAP PDU in the second format can be achieved only by converting the format of the SRAP header.

[0141] In this embodiment, the first relay terminal generates a SRAP PDU in a second format that can be forwarded in the MHRN according to the SRAP PDU in the first format sent by the first remote terminal, so as to provide a forwarding service of SRAPPDU data for the old version remote UE by using the MHRN.

[0142] It should be noted that the above methods 1 and 2 mainly describe the processing of the first information sent by the first remote terminal. In other implementations, the MHRN may also process the data or signaling sent to the first remote terminal through the first relay terminal.

[0143] As an optional implementation manner, when the first relay terminal acquires the second information and generates the first information according to the second information, if the second information includes a second response message, the first information generated according to the second information includes the first response message;

[0144] The second response message is received by the first relay terminal through the MHRN, and the first response message and the second response message are used to carry response information from the first node.

[0145] As another optional implementation manner, when the first relay terminal acquires the second information and generates the first information according to the second information, if the second information includes a fourth response message, the first information generated according to the second information includes a third response message;

[0146] Among them, the fourth response message is received by the first relay terminal through the MHRN, and is used to instruct the first relay terminal and the first node to continue the relevant signaling process of establishing a Uu connection for the first remote terminal; the third response message is used to instruct the first remote terminal to continue the relevant signaling process of establishing a Uu connection.

[0147] Method 3

[0148] In a case where the second information acquired by the first relay terminal includes a second response message or a fourth response message, the first relay terminal generates, according to the second information, first information including a first response message or a third response message.

[0149] Corresponding to the above-mentioned method 1, after the first relay terminal receives the first discovery message or the first notification request message from the first remote terminal, the first relay terminal may also receive a second response message or a fourth response message. At this time, the first relay terminal also generates a first response message based on the second response message, or generates a third response message based on the fourth response message, and sends the first response message or the third response message to the first remote terminal.

[0150] In this embodiment, the first relay terminal can generate a first response message or a third response message based on the received second response message or the fourth response message, which can be sent to the old version remote UE through the single-hop relay network, so that the old version remote UE establishes a wireless connection with the first node according to the first response message or the third response message.

[0151] As an optional implementation manner, when the first relay terminal obtains the second information and generates the first information according to the second information, if the second information includes the SRAP PDU in the second format, the first information generated according to the second information includes the SRAP PDU in the first format;

[0152] The SRAP PDU in the second format is received by the first relay terminal through the MHRN.

[0153] Method 4

[0154] In a case where the second information acquired by the first relay terminal includes the SRAP PDU in the second format, the first relay terminal generates, according to the second information, first information including the SRAP PDU in the first format.

[0155] Corresponding to the above-mentioned method 2, when the first relay terminal receives the SRAP PDU in the second format through the MHRN, and the target remote terminal of the SRAP PDU in the second format is the first remote terminal, the first relay terminal generates a SRAP PDU in the first format based on the SRAP PDU in the second format, and sends the SRAP PDU in the first format to the first remote terminal through the single-hop relay network.

[0156] In this implementation, it is assumed that the second relay terminal is a relay terminal adjacent to the first relay terminal in the MHRN. The first relay terminal generates a SRAP PDU in the first format that can be sent to the first remote terminal through the single-hop relay network according to the SRAP PDU in the second format from the second relay terminal.

[0157] It should be noted that, in the above-mentioned methods 1 to 4, the old version remote UE including the source remote terminal is used as an example for illustration. In the U2U MHRN, the target remote terminal may also be an old version remote UE. At this time, the relay terminal that provides access services to the target remote terminal also needs to generate second information for forwarding in the MHRN based on the first information sent by the target remote terminal; or, generate first information based on the second information received through the MHRN and with the destination address being the target remote terminal, and send the first information to the target remote terminal through the single-hop relay network, which will not be repeated here.

[0158] In an optional implementation, when the first information includes a first discovery message or a first communication request message, and the second information generated according to the first information includes a second discovery message or a second communication request message, the first relay terminal sends the second information through the MHRN, including:

[0159] The first relay terminal forwards the second discovery message or the second communication request message via the MHRN, and initiates a wireless connection establishment process of the MHRN for the first remote terminal.

[0160] In some implementations, the wireless connection establishment process of the MHRN initiated for the first remote terminal may be forwarding, by the MHRN, signaling related to the wireless connection establishment process between the first remote terminal and the first node.

[0161] In one implementation, the first relay terminal forwards the second discovery message or the second communication request message through the MHRN to initiate a wireless connection establishment process of the MHRN for the first remote terminal, including:

[0162] The first relay terminal forwards the second discovery message or the second communication request message to the first node through the MHRN;

[0163] The first relay terminal receives a second response message through the MHRN, where the second response message is a response message to the second discovery message or the second communication request message;

[0164] The first relay terminal generates a first response message according to the second response message, where the first response message is a response message to the first discovery message or the first communication request message;

[0165] The first relay terminal sends the first response message to the first remote terminal.

[0166] In this embodiment, the first relay terminal forwards the second discovery message or the second communication request message through MHRN to initiate the wireless connection establishment process of the MHRN for the first remote terminal. The first relay terminal may forward the second discovery message or the second communication request message to the first node through MHRN, so that the first node feeds back a second response message according to the second discovery message or the second communication request message.

[0167] For example: In Figure 1a In the application scenario shown, the first remote terminal is a legacy U2N Remote UE, and the first relay terminal is a U2N relay UE that provides access services for the legacy U2N Remote UE. The U2N relay UE that provides access services for the legacy U2N Remote UE receives a first discovery message from the legacy U2N Remote UE. After the U2N relay UE generates a second discovery message based on the first discovery message, it sends the second discovery message to the gNB through the MHRN. The gNB feeds back a second response message based on the second discovery message. The second response message is forwarded to the U2N relay UE that provides access services for the legacy U2NRemote UE through the MHRN. At this time, the U2N relay UE generates a first response message that can be sent in a single-hop relay network based on the second response message, and then sends it to the legacy U2N Remote UE.

[0168] Another example: In Figure 1c In the application scenario shown, the first remote terminal is a legacy U2U Remote UE, and the first relay terminal is a U2U relay UE that provides access services for the legacy U2U Remote UE. The U2U relay UE that provides access services for the legacy U2URemote UE receives a first discovery message from the legacy U2U Remote UE. After the U2U relay UE generates a second discovery message based on the first discovery message, it sends a second discovery message to the U2U Remote UE through the MHRN. The U2U Remote UE feeds back a second response message based on the second discovery message. The second response message is forwarded to the U2U relay UE that provides access services for the legacy U2U Remote UE through the MHRN. At this time, the U2U relay UE generates a first response message that can be sent in a single-hop relay network based on the second response message, and then sends it to the legacy U2U Remote UE.

[0169] It should be noted that, in the case that the target remote UE is a legacy U2U Remote UE, after the second discovery message is forwarded through the MHRN, the relay UE that provides access services for the target remote UE generates a corresponding first discovery message and sends it to the target remote UE. The target remote UE feeds back a first response message based on the first discovery message. The first response message is generated by the relay UE that provides access services for the target remote UE and then forwarded to the first relay terminal through the MHRN.

[0170] Optionally, the first relay terminal forwards the second discovery message or the second communication request message through the MHRN, and initiates a wireless connection establishment process of the MHRN for the first remote terminal, including:

[0171] The first relay terminal forwards the second discovery message or the second communication request message through the MHRN;

[0172] The first relay terminal generates a first response message according to a second response message from a second relay terminal, wherein the second relay terminal is a relay terminal adjacent to the first relay terminal in the MHRN;

[0173] The first relay terminal sends the first response message to the first remote terminal.

[0174] It should be noted that, in the present embodiment, the first node may also be an old version remote UE. In this case, the first remote terminal may include a source old version remote UE that sends a first discovery message or a first communication request message, and a target old version remote UE of the first discovery message or the first communication request message. The corresponding first relay terminal includes a first relay terminal A that provides access services for the source old version remote UE and a first relay terminal B that provides access services for the target old version remote UE.

[0175] For example: In Figure 1b In the application scenario shown, the number of the first remote terminals may be 2, that is, Figure 1a The legacy U2N Remote UEs at both ends of the MHRN, correspondingly, the number of the first relay terminals may also be two, that is, U2U relay UEs that provide access services to the two legacy U2N Remote UEs respectively.

[0176] In this embodiment, the above-mentioned first relay terminal forwards the second discovery message or the second communication request message through MHRN, and initiates the wireless connection establishment process of the MHRN for the first remote terminal, which can be: the first relay terminal A accessed by the first remote terminal forwards the second discovery message or the second communication request message to the first relay terminal B providing access service for the first node through MHRN, so that the first relay terminal B generates a first discovery message or a first communication request message according to the second discovery message or the second communication request message, and sends the first discovery message or the first communication request message to the first node through the single-hop relay network; then, the first node generates a first response message according to the first discovery message or the first communication request message, and sends the first response message to the first relay terminal B; the first relay terminal B generates a second response message that can be transmitted in MHRN according to the first response message, and sends the second response message to the first relay terminal A through MHRN; the first relay terminal A generates a first response message that can be transmitted in the single-hop relay network according to the received second response message, and sends the first response message to the first remote terminal. In this way, the wireless connection discovery or request process between two old version remote terminals is realized by using MHRN.

[0177] In some other implementations, the wireless connection establishment process of the MHRN initiated by the first remote terminal may be a signaling process in which the relay node in the MHRN performs relevant signaling with the first node to establish a Uu connection for the first remote terminal based on a second discovery message or a second communication request message.

[0178] Optionally, the first relay terminal forwards the second discovery message or the second communication request message through the MHRN, and initiates a wireless connection establishment process of the MHRN for the first remote terminal, including:

[0179] The first relay terminal forwards the second discovery message or the second communication request message through the MHRN;

[0180] The first relay terminal receives a fourth response message from a third relay terminal through the MHRN, wherein the third relay terminal has a wireless connection with the first node or supports establishing a wireless connection;

[0181] The first relay terminal generates a third response message according to the fourth response message, and sends the third response message to the first remote terminal.

[0182] The third relay terminal may be a relay terminal in the MHRN.

[0183] Optionally, when the third relay terminal receives the second discovery message or the second communication request message, if a wireless connection with the first node has been established, it will feedback a fourth response message; if not established, when feedback the fourth response message, it will also initiate a wireless connection establishment process with the first node.

[0184] In this implementation manner, the third relay terminal in the MHRN may perform, with the first node, a signaling process related to establishing a Uu connection for the first remote terminal according to the second discovery message or the second communication request message.

[0185] As an optional implementation manner, when the first information includes a first discovery message or a first communication request message, and the second information generated according to the first information includes the second discovery message or the second communication request message, the manner of generating the second information according to the first information includes:

[0186] Fill at least part of the content of the first information field in the first discovery message or the first communication request message into the second information field in the second discovery message or the second communication request message.

[0187] In some implementations, the first information field may include all or part of the information field in the first discovery message or the first communication request message.

[0188] Optionally, the second information field may be the same information field as the first information field in the second discovery message or the second communication request message, or the second information field may be the same information field as the first information field in the second discovery message or the second communication request message.

[0189] In this embodiment, at least part of the content of the first discovery message or the first communication request message can be filled into the second discovery message or the second communication request message, such as filling the end-to-end bearer identifier in the first discovery message or the first communication request message into the second discovery message or the second communication request message.

[0190] It should be noted that the above-mentioned filling at least part of the content of the first discovery message or the first communication request message into the second discovery message or the second communication request message may be to perform certain processing on at least part of the content of the first discovery message or the first communication request message, and then fill it into the second discovery message or the second communication request message, such as converting the short identifier in the first discovery message or the first communication request message into a long identifier, and then filling it into the corresponding information field of the second discovery message or the second communication request message.

[0191] Optionally, the method of generating the second information according to the first information further includes:

[0192] Fill in the third information field in the second discovery message or the second communication request message.

[0193] In some implementations, the third information field may be a field of the second discovery message or the second communication request message that is different from the first discovery message or the first communication request message. For example, the third information field is different from the first information field or the second information field.

[0194] In this implementation manner, additional content may also be added to the third information field of the second discovery message or the second communication request message.

[0195] Optionally, the third information field carries at least one of the following information:

[0196] Instructions for allowing MHRN to forward;

[0197] Multi-hop forwarding indication information;

[0198] The maximum number of hops allowed for forwarding;

[0199] The number of remaining forwarding hops;

[0200] Version information of the sender of the first discovery message or the first communication request message, such as whether the sender is an old version remote UE accessed based on a single-hop relay network protocol or a new version remote UE accessed based on a multi-hop relay network protocol;

[0201] The capability information of the sender of the first discovery message or the first communication request message, such as whether the sender supports the multi-hop relay network protocol.

[0202] It should be noted that the above-mentioned multi-hop forwarding indication information can be used to explicitly indicate the multi-hop forwarding of the second discovery message or the communication message, or the above-mentioned multi-hop forwarding indication information can be used to implicitly indicate the multi-hop forwarding of the second discovery message or the communication message, such as by identifying at least two relay terminals in the forwarding path corresponding to the second path, so as to implicitly indicate the multi-hop forwarding of the second discovery message or the communication message.

[0203] In this implementation, it is possible to generate the second discovery message or the second communication request message according to at least part of the content in the first discovery message or the first communication request message and the additionally added third information field.

[0204] As an optional implementation manner, in a case where the second information includes the second discovery message or the second communication request message, the first information generated according to the second information includes the first discovery message or the first communication request message;

[0205] The method of generating the first information according to the second information includes:

[0206] Fill at least part of the content in the second information field of the second discovery message or the second communication request message into the first information field of the first discovery message or the first communication request message.

[0207] In this implementation manner, at least part of the content of the second discovery message or the second communication request message may be filled into the first discovery message or the first communication request message.

[0208] Optionally, the method of generating the first information according to the second information further includes:

[0209] The third information field in the second discovery message or the second communication request message is removed.

[0210] In this implementation, the third information field additionally added to the second discovery message or the second communication request message relative to the first discovery message or the first communication request message may be removed to generate the first discovery message or the first communication request message according to the second discovery message or the second communication request message.

[0211] In some implementations, when applied to an L2 U2U relay or L3 U2U relay scenario, the first relay terminal is further configured to generate a first response message according to the second response message.

[0212] In one implementation, when the first information includes a first response message, the second information generated according to the first information includes the second response message;

[0213] The method of generating the second information according to the first information includes:

[0214] Fill at least part of the content of the fourth information field in the first response message into the fifth information field of the second response message.

[0215] Optionally, the fourth information field may include all or part of the information fields in the first response message.

[0216] Optionally, the fifth information field may be the same information field as the fourth information field in the second response message, or the fifth information field may be the same information field as the fourth information field in the second response message.

[0217] In this embodiment, at least part of the content of the first response message may be filled into the second response message.

[0218] It should be noted that the above-mentioned filling at least part of the content of the first response message into the second response message can be that at least part of the content of the first response message is processed in a certain way and then filled into the second response message, such as converting the short identifier in the first response message into a long identifier and then filling it into the corresponding information field of the second response message.

[0219] In one implementation, the method of generating the second information according to the first information further includes:

[0220] Fill in the sixth information field in the second response message.

[0221] Optionally, the sixth information field may be a field of the second discovery message or the second communication request message that is different from the first discovery message or the first communication request message. For example, the sixth information field is different from the fourth information field or the fifth information field.

[0222] In this implementation manner, additional content may also be added to the sixth information field of the second response message.

[0223] Optionally, the sixth information field carries at least one of the following information:

[0224] Instructions for allowing MHRN to forward;

[0225] Multi-hop forwarding indication information;

[0226] The maximum number of hops allowed for forwarding;

[0227] The number of remaining forwarding hops;

[0228] Version information of the sender of the first response message;

[0229] The capability information of the sender of the first response message.

[0230] The information carried in the sixth information field has the same or similar meaning as the corresponding information carried in the third information field, and will not be described in detail here.

[0231] In this implementation, the second response message can be generated according to at least part of the content in the first response message and the additionally added sixth information field.

[0232] In some embodiments, when applied to an L2 U2U relay or L3 U2U relay scenario, if the first node is a remote UE accessed based on a single-hop relay network protocol, i.e., an old version UE, the first relay terminal providing access service to the first node also needs to generate a second response message based on the first response message from the first node, so as to forward the second response message through the MHRN.

[0233] In one implementation, when the second information includes the second response message, and the first information generated according to the second information includes a first response message;

[0234] The method of generating the first information according to the second information includes:

[0235] Fill at least part of the content of the fifth information field in the second response message into the fourth information field of the first response message.

[0236] In this implementation, at least part of the content of the second response message may be filled into the first response message.

[0237] Optionally, the method of generating the first information according to the second information further includes:

[0238] Remove the sixth information field in the second response message.

[0239] In this implementation manner, the sixth information field that is additionally added to the first response message in the second response message may also be removed to achieve generation of the first response message according to the second response message.

[0240] In one embodiment, the method further comprises:

[0241] The first relay terminal acquires first configuration information, where the first configuration information is used by the first relay terminal to provide communication services for the first remote terminal through the MHRN.

[0242] Optionally, the first relay terminal may obtain the first configuration information by receiving the first configuration information from a network side device, or by obtaining the first configuration information agreed upon in a protocol.

[0243] Optionally, the first configuration information is used by the first relay terminal to provide at least one of the following communication services for the first remote terminal through the MHRN:

[0244] The first remote terminal communicates with the second remote terminal through the MHRN, wherein the second remote terminal is a terminal that performs wireless communication access based on a single-hop relay network protocol, for example: Figure 1b Application scenario shown;

[0245] The first remote terminal communicates with a third remote terminal through the MHRN, wherein the third remote terminal is a terminal accessed based on a multi-hop relay network protocol, for example: Figure 1c Application scenario shown;

[0246] The first remote terminal communicates with the network side device through the MHRN, for example: Figure 1a The application scenario shown.

[0247] In this implementation, in order to enable the first relay terminal in the MHRN to provide services for the old version remote UE, the network side device can configure or pre-configure the first relay terminal, or agree in the protocol on information that the first relay terminal provides communication services for the old version remote UE.

[0248] As an optional implementation manner, the first relay terminal receives first information from the first remote terminal, generates second information according to the first information, and sends the second information through the MHRN, including: the first relay terminal generates a SRAPPDU in the second format according to the SRAP PDU in the first format from the first remote terminal, and sends the SRAP PDU in the second format based on the MHRN;

[0249] or,

[0250] The first relay terminal acquires the second information, generates the first information according to the second information, and sends the first information to the first remote terminal, including: the first relay terminal generates the SRAP PDU in the first format according to the SRAP PDU in the second format sent by the MHRN and the receiving end of which is the first remote terminal, and sends the SRAP PDU in the first format to the first remote terminal;

[0251] The first information includes the SRAP PDU in the first format; and the second information includes the SRAP PDU in the second format.

[0252] In this embodiment, the first relay terminal converts the format of the SRAP PDU sent or received by the first remote terminal through the MHRN, so that the SRAP PDU in the first format sent by the first remote terminal is converted into a SRAP PDU in the second format that can be forwarded by the MHRN; or, the SRAP PDU in the second format sent through the MHRN is converted into a SRAP PDU in the first format that can be forwarded to the first remote terminal through the single-hop relay network.

[0253] As an optional implementation, the method further includes:

[0254] The first relay terminal obtains target association information, wherein the target association information is used to indicate an association relationship between a first local identifier of the first remote terminal and a second local identifier of the first remote terminal; the first local identifier of the first remote terminal is used to identify the first remote terminal in the single-hop relay network; and the second local identifier of the first remote terminal is used to identify the first remote terminal in the MHRN.

[0255] In some implementations, the first local identifier and the second local identifier may be allocated by a network side device, such as a base station. In this case, the first relay terminal acquires the target association information, including:

[0256] The first relay terminal receives the target association information from a network side device.

[0257] In some other implementations, the second local identifier may be allocated by the first relay terminal. In this case, the first relay terminal acquires the target association information, including:

[0258] The first relay terminal allocates a second local identifier to the first remote terminal;

[0259] The first relay terminal associates the first local identifier of the first remote terminal with the second local identifier of the first remote terminal to obtain the target association information.

[0260] In one implementation, the first local identifier of the first remote terminal may be carried in the first information, so that when the first relay terminal receives the first information from the first remote terminal, the first local identifier may be extracted therefrom.

[0261] In another implementation manner, the first local identifier of the first remote terminal may also be allocated by the first relay terminal. In this case, the first relay terminal associates the first local identifier and the second local identifier of the same remote terminal to obtain target association information.

[0262] Optionally, the method further comprises:

[0263] The first relay terminal sends the target associated information to the third relay terminal.

[0264] The third relay terminal is a relay terminal in the MHRN that has or establishes a wireless connection with the first node.

[0265] For example: when the first node is a remote terminal that accesses the third relay terminal based on a single-hop relay network protocol, the first relay terminal needs to generate corresponding second information based on the first information sent by the first remote terminal, and the third relay terminal needs to generate corresponding first information based on the second information.

[0266] In this embodiment, the first relay terminal and the third relay terminal reach an agreement on the association relationship between the first local identifier and the second local identifier, so that in the process of generating the second information based on the first information, or generating the first information based on the second information, the first local identifier and the second local identifier can be accurately converted according to the association relationship between the first local identifier and the second local identifier.

[0267] In some implementations, the first local identifier and the second local identifier may be assigned by the same or different nodes.

[0268] For example: Figure 1a As shown, when the old version remote UE accesses the base station through the MHRN, for the first local identifier and the second local identifier, one or more of the following configuration behaviors may be included:

[0269] 1) The base station allocates a first local identifier to the legacy remote UE, where the first local identifier is used for data and information transmission between the legacy remote UE and a relay UE that provides access services for the legacy remote UE;

[0270] 2) The base station allocates a corresponding second local identifier for the old version remote UE. At this time, the first relay terminal receives the second local identifier of the old version remote UE accessing the first relay terminal from the base station. The second local identifier is used by the first relay terminal to forward data information for the old version remote UE in the MHRN.

[0271] It is worth noting that MHRN needs to serve more UEs than a single-hop relay network. Therefore, a first local identifier with a smaller number of bits is needed in a single-hop relay network to uniquely identify each UE in the single-hop relay network. However, the total number of identifiers provided by the first local identifier does not provide a sufficient number of identifiers to distinguish UEs in the MHRN network. Therefore, a second local identifier that is longer than the first local identifier is required to distinguish UEs in the MHRN network.

[0272] Another example: Figure 1b or Figure 1c As shown, when the old version remote UE accesses another remote UE through the MHRN, for the first local identifier and the second local identifier, one or more of the following configuration behaviors may be included:

[0273] 1) The relay UE allocates a first local identifier to the legacy remote UE, where the first local identifier is used for data and information transmission between the legacy remote UE and the relay UE;

[0274] 2) The relay UE allocates a corresponding second local identifier for the old version remote UE, where the second local identifier is used by the relay UE to forward data information for the old version remote UE in the MHRN.

[0275] It should be noted that if Figure 1c In the scenario shown, there are two legacy remote UEs, and the access relay UE can provide the first local identifier and the second local identifier for each corresponding legacy remote UE, and send the target relationship information of the first local identifier and the second local identifier to other relay UEs. The access relay UE refers to a relay UE that provides access services for the remote UE.

[0276] Of course, in some embodiments, the first relay terminal can assign a first local identifier to the first remote terminal, and the target base station or the target remote terminal can assign a second local identifier to the first remote terminal, and the target association information of the first local identifier and the second local identifier can also be agreed upon between the first relay terminal and the target base station or the target remote terminal.

[0277] In some implementations, the first relay terminal receives first information from the first remote terminal, generates second information according to the first information, and sends the second information through the MHRN, including:

[0278] The first relay terminal receives first information from a first remote terminal, and determines the second local identifier corresponding to the first local identifier in the first information according to the target association information;

[0279] The first relay terminal generates second information according to the first information and the second local identifier, and sends the second information through the MHRN according to the second local identifier.

[0280] In this embodiment, after the first relay terminal receives the first information from the first remote terminal, it determines the second local identifier corresponding to the first local identifier in the first information, and then fills the second local identifier into the corresponding information field in the second information, so that the second information can be forwarded in the MHRN based on the second local identifier, that is, at least one of the sender and the receiver of the second information is identified in the MHRN based on the second local identifier.

[0281] Optionally, the first relay terminal acquires the second information, generates the first information according to the second information, and sends the first information to the first remote terminal, including:

[0282] The first relay terminal acquires second information;

[0283] The first relay terminal determines, according to the target association information, the first local identifier corresponding to the second local identifier in the second information;

[0284] The first relay terminal generates first information according to the second information and the first local identifier, and sends the first information to the first remote terminal according to the first local identifier.

[0285] In this implementation mode, after receiving the second information from the MHRN, the first relay terminal determines the first local identifier corresponding to the second local identifier in the second information, and then fills the first local identifier into the corresponding information field in the first information, so that the first information can be sent based on the first local identifier in the single-hop relay network, that is, at least one of the sending end and the receiving end of the first information is identified based on the first local identifier in the single-hop relay network.

[0286] As an optional implementation, the method further includes:

[0287] The first relay terminal acquires second configuration information, where the second configuration information is used to configure a conversion rule between the SRAP PDU in the first format and the SRAP PDU in the second format.

[0288] The second configuration information may be configured or pre-configured by a network-side device, or may be agreed upon by a protocol, which is not specifically limited here.

[0289] In some implementations, the conversion rule between the SRAP PDU in the first format and the SRAP PDU in the second format may include a conversion rule between a SRAP header in the first format and a SRAP header in the second format.

[0290] Optionally, the conversion rules between the first format SRAP header and the second format SRAP header may include the conversion rules between the first local identifier and the second local identifier, such as: adding a string at a specified position in the first local identifier to obtain the second local identifier, or removing the string at a specified position in the second local identifier to obtain the first local identifier.

[0291] Optionally, the conversion rule between the first format SRAP header and the second format SRAP header may further include at least one of the following:

[0292] A rule for obtaining a corresponding information field in a second format SRAP header based on a portion of the information field in a first format SRAP header;

[0293] The rules for adding the third information field to the second format SRAP header, such as the rules for generating the information in the third information field, the adding position of the third information field, etc.

[0294] In this implementation, the first relay terminal can determine the conversion rules between the SRAP PDU of the first format and the SRAP PDU of the second format based on the second configuration information, thereby generating a SRAP PDU of the second format based on the SRAP PDU of the first format, or generating a SRAP PDU of the first format based on the SRAP PDU of the second format.

[0295] In one implementation of the embodiment of the present application, the first relay terminal receives the first information from the first remote terminal, generates the second information according to the first information, and sends the second information through the MHRN; so that the old version remote UE can send the first information to the first relay terminal through the single-hop relay network, and the first relay terminal can generate the second information that can be transmitted in the MHRN according to the first information, so that the MHRN can be used to provide a multi-hop relay service for the old version remote UE;

[0296] In another implementation of the embodiment of the present application, the first relay terminal obtains second information, generates first information based on the second information, and sends the first information to the first remote terminal; so that the second information whose destination address is the old version remote UE transmitted through MHRN can generate first information that can be transmitted through a single-hop relay network through the first relay terminal, and send the first information to the old version remote UE. In this way, it is possible to use MHRN to provide multi-hop relay services for old version remote UEs.

[0297] See also Figure 6 , is a flowchart of a configuration method provided in an embodiment of the present application. The executor of the configuration method may be a network side device, such as a base station.

[0298] like Figure 6 As shown, the configuration method includes the following steps:

[0299] Step 601: A network-side device sends first configuration information to a first relay terminal, where the first configuration information is used by the first relay terminal to provide communication services to a first remote terminal through a multi-hop relay network MHRN, where the first remote terminal is a terminal that performs wireless communication access based on a single-hop relay network protocol.

[0300] The first relay terminal, the first configuration information, the MHRN and the first remote terminal in the embodiment of the present application are as follows Figure 5 The first relay terminal, the first configuration information, the MHRN and the first remote terminal in the method embodiment shown have the same meaning and function. For specific description, please refer to Figure 5 The explanations in the illustrated method embodiment will not be repeated here.

[0301] In the embodiment of the present application, the network side device can configure the first relay terminal in the MHRN through the first configuration information to provide communication services for the old version remote UE accessed based on the single-hop relay network protocol.

[0302] Optionally, the first configuration information is used by the first relay terminal to provide at least one of the following communication services for the first remote terminal through the MHRN:

[0303] The first remote terminal communicates with a second remote terminal through the MHRN, wherein the second remote terminal is a terminal that performs wireless communication access based on the single-hop relay network protocol;

[0304] The first remote terminal communicates with a third remote terminal through the MHRN, wherein the third remote terminal is a terminal accessed based on a multi-hop relay network protocol;

[0305] The first remote terminal communicates with the network side device through the MHRN.

[0306] Optionally, the method further comprises:

[0307] The network side device sends second configuration information to the first relay terminal, and the second configuration information is used to configure a conversion rule between a protocol data unit SRAP PDU of a sidelink relay adaptation protocol in a first format and an SRAP PDU in a second format, wherein the first format is adapted to the single-hop relay network and the second format is adapted to the MHRN.

[0308] In this embodiment, the network side device can also configure the conversion rules between the SRAP PDU of the first format and the SRAP PDU of the second format for the first relay terminal through the second configuration information, so that the first relay terminal can generate a SRAP PDU of the second format according to the SRAP PDU of the first format based on the conversion rule, or generate a SRAP PDU of the first format according to the SRAP PDU of the second format.

[0309] The second configuration information, the SRAP PDU in the first format, and the SRAP PDU in the second format in the embodiment of the present application are as follows: Figure 5 The second configuration information, the SRAP PDU in the first format, and the SRAP PDU in the second format in the illustrated method embodiment have the same meaning and function, which will not be described in detail herein.

[0310] Optionally, the SRAP PDU in the first format includes a first format SRAP header, and the first format SRAP header includes at least one of the following:

[0311] A first source remote terminal identification field, carrying a first local identification of a source remote terminal of the SRAP PDU in the first format;

[0312] A first target remote terminal identification field, carrying a first local identification of the target remote terminal of the SRAP PDU in the first format;

[0313] End-to-end bearer identification;

[0314] A first path identifier, used to identify a path identifier from a source remote terminal of the SRAP PDU in the first format to a target remote terminal of the SRAP PDU in the first format;

[0315] or,

[0316] The SRAP PDU in the second format includes a SRAP header in the second format, and the SRAP header in the second format includes at least one of the following:

[0317] A second source remote terminal identification field, carrying a second local identification of the source remote terminal of the SRAP PDU in the second format;

[0318] A second target remote terminal identification field, carrying a second local identification of the target remote terminal of the SRAP PDU in the second format;

[0319] The sending direction of the SRAP PDU in the second format;

[0320] The end-to-end bearer identification;

[0321] A second path identifier, where the second path identifier is used to forward the SRAPPDU in the second format in the MHRN.

[0322] The first format SRAP header, the second format SRAP header, each information field in the first format SRAP header, and each information field in the second format SRAP header in the embodiment of the present application are the same as Figure 5 The first format SRAP header, the second format SRAP header, the various information fields in the first format SRAP header, and the various information fields in the second format SRAP header in the illustrated method embodiment have the same meaning and function, which will not be described in detail herein.

[0323] Optionally, when the MHRN includes the network side device, the method further includes:

[0324] The network side device allocates a second local identifier to the first remote terminal, where the second local identifier of the first remote terminal is used to identify the first remote terminal in the MHRN;

[0325] The network side device sends target association information to at least one of the first relay terminal and the third relay terminal; wherein the target association information is used to indicate the association relationship between the first local identifier of the first remote terminal and the second local identifier of the first remote terminal; the first local identifier of the first remote terminal is used to identify the first remote terminal in the single-hop relay network; the first relay terminal is a relay terminal in the MHRN that provides access services based on the single-hop relay network protocol for the first remote terminal, or the third relay terminal is a relay terminal in the MHRN that provides access services for the first node, and the first node is the target service base station or target remote terminal of the first remote terminal.

[0326] In one implementation, the network side device may also allocate a first local identifier for the first remote terminal, or the first relay terminal may allocate a first local identifier for the first remote terminal and send it to the network side device. Then, the network side device associates the first local identifier with the second local identifier of the same remote terminal to obtain target association information, and sends the target association information to the first relay terminal.

[0327] In this way, the first relay terminal and the network side device reach an agreement on the target association relationship. Subsequently, when the first relay terminal receives the first information from the first remote terminal, it can determine the second local identifier corresponding to the first local identifier in the first information according to the target association information, and forward the second information in the MHRN based on the second local identifier; or, when the first relay terminal obtains the second information, it can determine the first local identifier corresponding to the second local identifier in the second information according to the target association information, and transmit the first information through a single-hop relay network based on the first local identifier.

[0328] Of course, at least one of the first local identifier and the second local identifier may be allocated by the first relay terminal. For the specific description of this implementation, please refer to the following example. Figure 5 The explanations in the illustrated method embodiment will not be repeated here.

[0329] In order to facilitate understanding of the method and configuration method for serving a remote terminal in an MHRN provided in the embodiments of the present application, the following application scenario is used as an example for illustration.

[0330] Scenario 1: The process of establishing a wireless connection for a legacy remote UE in MHRN.

[0331] When the relay UE in the MHRN receives a discovery message / communication request message from an old version remote UE, a connection establishment service is provided for the old version remote UE according to the first configuration information (such as network configuration / pre-configuration / protocol predefined configuration). Specifically, the following process may be included:

[0332] 1) A relay UE, such as a first relay terminal, receives a first discovery message or a first communication request message from a legacy remote UE according to the first configuration information, and the relay UE generates a second discovery message or a second communication request message according to the first discovery message or the first communication request message, and forwards the second discovery message or the second communication request message in the MHRN.

[0333] 2) A relay UE, such as a second relay terminal, receives a second discovery message or a second communication request message forwarded by other relay UEs in the MHRN according to the first configuration information. At this time, the relay UE may perform any one of the following processes:

[0334] i) the relay UE continues to forward the second discovery message or the second communication request message;

[0335] ii) for the L2 U2U relay or the L3 U2U relay, if the first node with which the legacy remote UE requests communication is another legacy remote UE, the relay UE generates a first discovery message or a first communication request message for sending to the first node according to the received second discovery message or second communication request message, and sends the generated first discovery message or first communication request message to the first node;

[0336] iii) For an L2 U2N relay or an L3 U2N relay, if the first node with which the legacy remote UE requests communication is a base station, and the relay UE has a wireless connection (such as a Uu connection) with the base station, supports establishing a wireless connection, or completes establishing a wireless connection, the relay UE generates a corresponding fourth response message and sends the fourth response message in the MHRN network;

[0337] 3) The first node responds to the first discovery message or the first communication request message, or the second discovery message or the second communication request message. The response can be divided into the following two cases:

[0338] i) for an L2 U2U relay or an L3 U2U relay, if the first node with which the legacy remote UE requests communication is another legacy remote UE, the first node receives and processes a first discovery message or a first communication request message sent by the relay UE in the MHRN, and generates and sends a first response message corresponding to the first discovery message or the first communication request message;

[0339] ii) For L2 U2U relay or L3 U2U relay, if the first node that the old version remote UE requests to communicate is a new version remote UE, the first node receives and processes the second discovery message or the second communication request message forwarded by the relay UE in the MHRN, and generates and sends a second response message corresponding to the second discovery message or the second communication request message.

[0340] 4) The relay UE processes the response message. Corresponding to the response message, the processing may include at least one of the following processes:

[0341] i) For L2 U2U relay or L3 U2U relay, if the first node with which the legacy remote UE requests communication is another legacy remote UE, the relay UE receives and processes a first response message from the first node, then generates a second response message that can be forwarded in the MHRN based on the first response message, and forwards the second response message in the MHRN;

[0342] ii) The relay UE receives and processes the second response message forwarded from the MHRN, including: other UEs except the relay UE that provides access services to the legacy remote UE are used to forward the second response message, or the relay UE that provides access services to the legacy remote UE generates a first response message based on the second response message and sends the first response message to the legacy remote UE.

[0343] iii) For the L2 U2N relay or the L3 U2N relay, the relay UE receives and processes the fourth response message forwarded from the MHRN, and then other UEs except the relay UE providing access services for the legacy remote UE are used to forward the fourth response message, or the relay UE providing access services for the legacy remote UE generates a third response message based on the fourth response message and sends the third response message to the legacy remote UE.

[0344] Scenario 2: Data forwarding process of the old version remote UE in L2 MHRN.

[0345] In some embodiments, in L2 U2N MHRN or L2 U2U MHRN, after the relay UE receives a first format SRAP PDU from a legacy remote UE, the relay UE generates a second format SRAP PDU that can be forwarded in the MHRN network based on the first format SRAP PDU, and forwards the second format SRAP PDU in the MHRN network.

[0346] The first format SRAP PDU carries a first format SRAP header, and the second format SRAP PDU carries a second format SRAP header. When the relay UE generates the second format SRAP PDU based on the first format SRAP PDU, it rewrites the SRAP header in the received first format SRAP PDU from the first format to the second format.

[0347] The first format SRAP PDU is generated by an old version remote UE based on an old version protocol, such as generating a first format SRAP PDU based on a single-hop relay network protocol; the second format SRAP PDU is generated by a relay UE based on a new version protocol matching the MHRN network, such as generating a second format SRAP PDU based on a multi-hop relay network protocol.

[0348] Wherein, when the relay UE generates the second format SRAP PDU based on the first format SRAP PDU, the process of rewriting the first format SRAP header into the second format SRAP header includes at least one of the following:

[0349] 1) For L2 U2U MHRN or L2 U2N MHRN, the relay UE determines the second local identifier corresponding to the source remote UE, or generates the long identifier of the source remote UE based on the short identifier of the source remote UE carried in the first format SRAP header, and fills the second local identifier or long identifier into the source remote UE identifier field of the second format SRAP header;

[0350] 2) For the L2 U2N MHRN network, the relay UE fills the sending direction of the SRAP PDU in the second format SRAP header, such as upstream or downstream;

[0351] 3) For the L2 U2U MHRN network, the relay UE determines the corresponding second local identifier or long identifier according to the first local identifier of the target remote UE carried by the SRAP header in the first format, or generates the long identifier of the target remote UE based on the first local identifier of the target remote UE carried by the SRAP header in the first format, and fills the first local identifier or short identifier into the target remote UE identifier field of the SRAP header in the second format;

[0352] 4) For L2 U2U MHRN or L2 U2N MHRN, the relay UE fills the e2eRBID in the first format SRAP header into the corresponding field of the second format SRAP header;

[0353] 5) For the L2 U2U MHRN network, the relay UE determines a second path identifier based on the path identifier to the target remote UE carried in the first format SRAP header, and fills the second path identifier into the corresponding field of the second format SRAP header. The second path identifier is used to forward the SRAP PDU in the L2 U2U MHRN.

[0354] In other embodiments, in L2 U2N MHRN or L2 U2U MHRN, after receiving the second format SRAP PDU sent by other relay UEs or base stations or remote UEs in the MHRN network, the relay UE can generate a first format SRAP PDU that can be received by the old version remote UE based on the received second format SRAP PDU, and send the generated first format SRAP PDU to the old version remote UE; when the relay UE generates the first format SRAP PDU based on the second format SRAP PDU, the relay UE rewrites the SRAP header in the received first format SRAP PDU from the second format to the first format.

[0355] Wherein, when the relay UE generates the first format SRAP PDU based on the second format SRAP PDU, the process of rewriting the second format SRAP header into the first format SRAP header includes at least one of the following:

[0356] 1) For L2 U2U MHRN or L2 U2N MHRN, the relay UE determines the corresponding first local identifier or short identifier according to the second local identifier or long identifier of the target remote UE carried by the second format SRAP header, and fills the first local identifier or short identifier into the corresponding field of the first format SRAP header;

[0357] 2) For L2 U2U MHRN or L2 U2N MHRN, the relay UE determines the corresponding first local identifier or short identifier according to the second local identifier or long identifier of the source remote UE carried by the second format SRAP header, and fills the first local identifier or short identifier into the corresponding field of the first format SRAP header;

[0358] 3) For L2 U2U MHRN or L2 U2N MHRN, the relay UE fills the e2eRBID in the second format SRAP header into the corresponding field of the first format SRAP header.

[0359] Optionally, the base station may configure a conversion configuration between the first format SRAP header and the second format SRAP header for the relay UE.

[0360] For example: the conversion relationship between the first format SRAP header and the second format SRAP header is configured through a table. Thereafter, the relay UE searches the corresponding table for one or more fields of the corresponding second format SRAP header based on the one or more fields of the SRAP header carried in the received first format SRAP PDU, and generates the second format SRAP header accordingly; or, the relay UE searches the corresponding table for one or more fields of the corresponding first format SRAP header based on the one or more fields of the SRAP header carried in the received second format SRAP PDU, and generates the first format SRAP header.

[0361] The method for serving a remote terminal in MHRN provided in the embodiment of the present application may be performed by a device for serving a remote terminal in MHRN. In the embodiment of the present application, the device for serving a remote terminal in MHRN performing the method for serving a remote terminal in MHRN is taken as an example to illustrate the device for serving a remote terminal in MHRN provided in the embodiment of the present application.

[0362] See also Figure 7 An embodiment of the present application provides a device for serving a remote terminal in an MHRN, which can be used in a first relay terminal. For example, the device for serving a remote terminal in the MHRN is a device in the first relay terminal.

[0363] like Figure 7 As shown, the apparatus 700 for serving a remote terminal in MHRN includes the following modules:

[0364] The first processing module 701 is configured to receive first information from a first remote terminal, generate second information according to the first information, and send the second information through the MHRN;

[0365] The second processing module 702 is used to obtain second information, generate first information according to the second information, and send the first information to the first remote terminal;

[0366] The first information is information sent or received via a single-hop relay network; the second information is information sent or received via an MHRN.

[0367] Optionally, in a case where the first relay terminal receives first information from a first remote terminal, if the first information includes a first discovery message or a first communication request message, the second information generated according to the first information includes a second discovery message or a second communication request message;

[0368] The first discovery message or the first communication request message is used to establish a wireless link between the first remote terminal and a first node, and the first node is a target service base station or a target remote terminal of the first remote terminal.

[0369] Optionally, in the case where the first relay terminal receives first information from the first remote terminal, if the first information includes a protocol data unit SRAP PDU of a sidelink relay adaptation protocol in a first format, the second information generated based on the first information includes a SRAP PDU in a second format;

[0370] The first format is adapted to the single-hop relay network, and the second format is adapted to the MHRN.

[0371] Optionally, when the first relay terminal acquires the second information and generates the first information according to the second information, if the second information includes a second response message, the first information generated according to the second information includes the first response message;

[0372] The second response message is received by the first relay terminal through the MHRN, and the first response message and the second response message are used to carry response information from the first node.

[0373] Optionally, when the first relay terminal acquires the second information and generates the first information according to the second information, if the second information includes a fourth response message, the first information generated according to the second information includes a third response message;

[0374] Among them, the fourth response message is received by the first relay terminal through the MHRN, and is used to instruct the first relay terminal and the first node to continue the relevant signaling process of establishing a Uu connection for the first remote terminal; the third response message is used to instruct the first remote terminal to continue the relevant signaling process of establishing a Uu connection.

[0375] Optionally, when the first relay terminal acquires the second information and generates the first information according to the second information, if the second information includes the SRAP PDU in the second format, the first information generated according to the second information includes the SRAP PDU in the first format;

[0376] The SRAP PDU in the second format is received by the first relay terminal through the MHRN.

[0377] Optionally, generating the SRAP PDU of the second format according to the SRAP PDU of the first format includes: modifying a first format SRAP header carried by the SRAP PDU of the first format to a second format SRAP header carried by the SRAP PDU of the second format;

[0378] or,

[0379] Generating the SRAP PDU of the first format according to the SRAP PDU of the second format includes: modifying the SRAP header of the second format carried by the SRAP PDU of the second format to the SRAP header of the first format carried by the SRAP PDU of the first format;

[0380] The first format SRAP header is applicable to a single-hop relay network, and the second format SRAP header is applicable to an MHRN.

[0381] Optionally, the first processing module 701 is further configured to:

[0382] When the first information includes a first discovery message or a first communication request message, and the second information generated based on the first information includes a second discovery message or a second communication request message, the second discovery message or the second communication request message is forwarded through the MHRN to initiate the wireless connection establishment process of the MHRN for the first remote terminal.

[0383] Optionally, the first processing module 701 includes:

[0384] a first forwarding unit, configured to forward the second discovery message or the second communication request message to the first node through the MHRN;

[0385] A first receiving unit, configured to receive a second response message through the MHRN, where the second response message is a response message to the second discovery message or the second communication request message;

[0386] A first generating unit, configured to generate a first response message according to the second response message, where the first response message is a response message to the first discovery message or the first communication request message;

[0387] The first sending unit is used to send the first response message to the first remote terminal.

[0388] Optionally, the first processing module 701 includes:

[0389] A second forwarding unit, configured to forward the second discovery message or the second communication request message through the MHRN;

[0390] a second generating unit, configured to generate a first response message according to a second response message from a second relay terminal, wherein the second relay terminal is a relay terminal adjacent to the first relay terminal in the MHRN;

[0391] The second sending unit is used to send the first response message to the first remote terminal.

[0392] Optionally, the first processing module 701 includes:

[0393] A third forwarding unit, configured to forward the second discovery message or the second communication request message through the MHRN;

[0394] a second receiving unit, configured to receive a fourth response message from a third relay terminal through the MHRN, wherein the third relay terminal has a wireless connection with the first node or supports establishing a wireless connection;

[0395] A third generating unit, configured to generate a third response message according to the fourth response message;

[0396] The third sending unit is used to send the third response message to the first remote terminal.

[0397] Optionally, when the first information includes a first discovery message or a first communication request message, and the second information generated according to the first information includes the second discovery message or the second communication request message, a manner of generating the second information according to the first information includes:

[0398] Fill at least part of the content of the first information field in the first discovery message or the first communication request message into the second information field in the second discovery message or the second communication request message.

[0399] Optionally, the method of generating the second information according to the first information further includes:

[0400] Fill in the third information field in the second discovery message or the second communication request message.

[0401] Optionally, when the second information includes the second discovery message or the second communication request message, the first information generated according to the second information includes a first discovery message or a first communication request message, and a manner of generating the first information according to the second information includes:

[0402] Fill at least part of the content in the second information field of the second discovery message or the second communication request message into the first information field of the first discovery message or the first communication request message.

[0403] Optionally, the method of generating the first information according to the second information further includes:

[0404] The third information field in the second discovery message or the second communication request message is removed.

[0405] Optionally, the third information field carries at least one of the following information:

[0406] Instructions for allowing MHRN to forward;

[0407] Multi-hop forwarding indication information;

[0408] The maximum number of hops allowed for forwarding;

[0409] The number of remaining forwarding hops;

[0410] Version information of a sender of the first discovery message or the first communication request message;

[0411] The capability information of the sender of the first discovery message or the first communication request message.

[0412] Optionally, in a case where the first information includes a first response message, the second information generated according to the first information includes the second response message, and a manner of generating the second information according to the first information includes:

[0413] Fill at least part of the content of the fourth information field in the first response message into the fifth information field of the second response message.

[0414] Optionally, the method of generating the second information according to the first information further includes:

[0415] Fill in the sixth information field in the second response message.

[0416] Optionally, when the second information includes the second response message, and the first information generated according to the second information includes a first response message, a manner of generating the first information according to the second information includes:

[0417] Fill at least part of the content of the fourth information field in the first response message into the fifth information field of the second response message.

[0418] Optionally, the method of generating the first information according to the second information further includes:

[0419] Remove the sixth information field in the second response message.

[0420] Optionally, the sixth information field carries at least one of the following information:

[0421] Instructions for allowing MHRN to forward;

[0422] Multi-hop forwarding indication information;

[0423] The maximum number of hops allowed for forwarding;

[0424] The number of remaining forwarding hops;

[0425] Version information of the sender of the first response message;

[0426] The capability information of the sender of the first response message.

[0427] Optionally, the device 700 for serving a remote terminal in the MHRN further includes:

[0428] The first acquisition module is used to acquire first configuration information, where the first configuration information is used by the first relay terminal to provide communication services for the first remote terminal through the MHRN.

[0429] Optionally, the first configuration information is used by the first relay terminal to provide at least one of the following communication services for the first remote terminal through the MHRN:

[0430] The first remote terminal communicates with a second remote terminal through the MHRN, wherein the second remote terminal is a terminal that performs wireless communication access based on a single-hop relay network protocol;

[0431] The first remote terminal communicates with a third remote terminal through the MHRN, wherein the third remote terminal is a terminal accessed based on a multi-hop relay network protocol;

[0432] The first remote terminal communicates with the network side device through the MHRN.

[0433] Optionally, the first processing module 701 includes:

[0434] a fourth generating unit, configured to generate a SRAP PDU in the second format according to the SRAP PDU in the first format from the first remote terminal, and send the SRAP PDU in the second format based on the MHRN;

[0435] or,

[0436] The second processing module 702 includes:

[0437] a fifth generating unit, configured to generate the SRAP PDU in the first format according to the SRAP PDU in the second format sent by the MHRN and whose receiving end is the first remote terminal, and send the SRAP PDU in the first format to the first remote terminal;

[0438] The first information includes the SRAP PDU in the first format; and the second information includes the SRAP PDU in the second format.

[0439] Optionally, the device 700 for serving a remote terminal in the MHRN further includes:

[0440] A second acquisition module is used to acquire target association information, wherein the target association information is used to indicate an association relationship between a first local identifier of the first remote terminal and a second local identifier of the first remote terminal; the first local identifier of the first remote terminal is used to identify the first remote terminal in the single-hop relay network; and the second local identifier of the first remote terminal is used to identify the first remote terminal in the MHRN.

[0441] Optionally, the first processing module 701 further includes:

[0442] A third receiving unit, configured to receive first information from a first remote terminal;

[0443] A first determining unit, configured to determine, according to the target association information, the second local identifier corresponding to the first local identifier in the first information;

[0444] a sixth generating unit, configured to generate second information according to the first information and the second local identifier;

[0445] The fourth sending unit is configured to send the second information through the MHRN according to the second local identifier.

[0446] Optionally, the second processing module 702 further includes:

[0447] A first acquiring unit, used to acquire second information;

[0448] A second determining unit, configured to determine, according to the target association information, the first local identifier corresponding to the second local identifier in the second information;

[0449] a seventh generating unit, configured to generate first information according to the second information and the first local identifier;

[0450] A fifth sending unit is configured to send the first information to the first remote terminal according to the first local identifier.

[0451] Optionally, the second acquisition module is specifically used to:

[0452] The target association information is received from a network side device.

[0453] Optionally, the second acquisition module includes:

[0454] A first allocating unit, configured to allocate a second local identifier to the first remote terminal;

[0455] The first associating unit is configured to associate the first local identifier of the first remote terminal with the second local identifier of the first remote terminal to obtain the target association information.

[0456] Optionally, the device 700 for serving a remote terminal in the MHRN further includes:

[0457] The second sending module is used to send the target association information to the third relay terminal.

[0458] Optionally, the SRAP PDU in the first format includes a first format SRAP header, and the first format SRAP header includes at least one of the following:

[0459] A first source remote terminal identification field, carrying a first local identification of a source remote terminal of the SRAP PDU in the first format;

[0460] A first target remote terminal identification field, carrying a first local identification of the target remote terminal of the SRAP PDU in the first format;

[0461] End-to-end bearer identification;

[0462] A first path identifier, used to identify a path identifier from a source remote terminal of the SRAP PDU in the first format to a target remote terminal of the SRAP PDU in the first format;

[0463] or,

[0464] The SRAP PDU in the second format includes a SRAP header in the second format, and the SRAP header in the second format includes at least one of the following:

[0465] A second source remote terminal identification field, carrying a second local identification of the source remote terminal of the SRAP PDU in the second format;

[0466] A second target remote terminal identification field, carrying a second local identification of the target remote terminal of the SRAP PDU in the second format;

[0467] The sending direction of the SRAP PDU in the second format;

[0468] The end-to-end bearer identification;

[0469] A second path identifier, where the second path identifier is used to forward the SRAPPDU in the second format in the MHRN.

[0470] Optionally, the second format SRAP header and the first format SRAP header satisfy at least one of the following:

[0471] At least one information field of the second format SRAP header has a different length from a corresponding information field of the first format SRAP header;

[0472] At least one information field of the second format SRAP header has a value different from a corresponding information field of the first format SRAP header;

[0473] At least one information field of the second format SRAP header and a corresponding information field of the first format SRAP header are allocated by different nodes;

[0474] The second format SRAP header has at least one third information field, and the at least one third information field has no corresponding information field in the first format SRAP header;

[0475] The first-format SRAP header has at least one fourth information field, and the at least one fourth information field has no corresponding information field in the second-format SRAP header.

[0476] Optionally, the device 700 for serving a remote terminal in the MHRN further includes:

[0477] The third acquisition module is used to acquire second configuration information, where the second configuration information is used to configure a conversion rule between the SRAP PDU in the first format and the SRAP PDU in the second format.

[0478] The device for serving a remote terminal in the MHRN in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices other than a terminal. Exemplarily, the terminal may include but is not limited to the types of the terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0479] The device for serving a remote terminal in MHRN provided in the embodiment of the present application can realize Figure 5 The various processes implemented by the illustrated method embodiment achieve the same technical effect and will not be described again here to avoid repetition.

[0480] The configuration method provided in the embodiment of the present application can be executed by a configuration device. In the embodiment of the present application, the configuration device provided in the embodiment of the present application is described by taking the configuration device executing the configuration method as an example.

[0481] See also Figure 8 , a configuration device provided in an embodiment of the present application can be used for a network side device, for example: the configuration is a device in a network side device.

[0482] like Figure 8 As shown, the configuration device 800 includes the following modules:

[0483] The first sending module 801 is used to send first configuration information to the first relay terminal, where the first configuration information is used for the first relay terminal to provide communication services for the first remote terminal through the multi-hop relay network MHRN, and the first remote terminal is a terminal for wireless communication access based on the single-hop relay network protocol.

[0484] Optionally, the first configuration information is used by the first relay terminal to provide at least one of the following communication services for the first remote terminal through the MHRN:

[0485] The first remote terminal communicates with a second remote terminal through the MHRN, wherein the second remote terminal is a terminal that performs wireless communication access based on the single-hop relay network protocol;

[0486] The first remote terminal communicates with a third remote terminal through the MHRN, wherein the third remote terminal is a terminal accessed based on a multi-hop relay network protocol;

[0487] The first remote terminal communicates with the network side device through the MHRN.

[0488] Optionally, the configuration device 800 further includes:

[0489] The third sending module is used to send second configuration information to the first relay terminal, where the second configuration information is used to configure a conversion rule between a protocol data unit SRAP PDU of a sidelink relay adaptation protocol in a first format and a SRAPPDU in a second format, wherein the first format is adapted to the single-hop relay network and the second format is adapted to the MHRN.

[0490] Optionally, the SRAP PDU in the first format includes a first format SRAP header, and the first format SRAP header includes at least one of the following:

[0491] A first source remote terminal identification field, carrying a first local identification of a source remote terminal of the SRAP PDU in the first format;

[0492] A first target remote terminal identification field, carrying a first local identification of the target remote terminal of the SRAP PDU in the first format;

[0493] End-to-end bearer identification;

[0494] A first path identifier, used to identify a path identifier from a source remote terminal of the SRAP PDU in the first format to a target remote terminal of the SRAP PDU in the first format;

[0495] or,

[0496] The SRAP PDU in the second format includes a SRAP header in the second format, and the SRAP header in the second format includes at least one of the following:

[0497] A second source remote terminal identification field, carrying a second local identification of the source remote terminal of the SRAP PDU in the second format;

[0498] A second target remote terminal identification field, carrying a second local identification of the target remote terminal of the SRAP PDU in the second format;

[0499] The sending direction of the SRAP PDU in the second format;

[0500] The end-to-end bearer identification;

[0501] A second path identifier, where the second path identifier is used to forward the SRAPPDU in the second format in the MHRN.

[0502] Optionally, when the MHRN includes the network side device, the configuration device 800 further includes:

[0503] A first allocation module, configured to allocate a second local identifier to the first remote terminal, wherein the second local identifier of the first remote terminal is used to identify the first remote terminal in the MHRN;

[0504] a fourth sending module, configured to send target association information to at least one of the first relay terminal and the third relay terminal;

[0505] Among them, the target association information is used to indicate the association relationship between the first local identifier of the first remote terminal and the second local identifier of the first remote terminal; the first local identifier of the first remote terminal is used to identify the first remote terminal in the single-hop relay network; the first relay terminal is a relay terminal in the MHRN that provides access services based on the single-hop relay network protocol for the first remote terminal, or the third relay terminal is a relay terminal in the MHRN that provides access services for the first node, and the first node is the target service base station or target remote terminal of the first remote terminal.

[0506] The configuration device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a network side device. Exemplarily, the network side device may be an access network device, such as a base station, or the network side device may be a core network device, etc., which is not specifically limited in the embodiment of the present application.

[0507] The configuration device provided in the embodiment of the present application can achieve Figure 6 The various processes implemented by the illustrated method embodiment achieve the same technical effect and will not be described again here to avoid repetition.

[0508] like Fig. 9 As shown, the embodiment of the present application further provides a communication device 900, including a processor 901 and a memory 902, and the memory 902 stores a program or instruction that can be run on the processor 901. For example, when the communication device 900 is a first relay terminal, the program or instruction is executed by the processor 901 to implement the various steps of the above-mentioned method embodiment for serving a remote terminal in the MHRN, and can achieve the same technical effect. When the communication device 900 is a network side device, the program or instruction is executed by the processor 901 to implement the various steps of the above-mentioned configuration method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0509] The embodiment of the present application also provides a relay terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 5 The steps in the method embodiment shown. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Fig.10 A schematic diagram of the hardware structure of a relay terminal for implementing an embodiment of the present application.

[0510] The relay terminal 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009 and at least some of the components of a processor 1010.

[0511] Those skilled in the art will appreciate that the relay terminal 1000 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1010 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig.10The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0512] It should be understood that in the embodiment of the present application, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0513] In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 1001 can transmit the data to the processor 1010 for processing; in addition, the RF unit 1001 can send uplink data to the network side device. Generally, the RF unit 1001 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0514] The memory 1009 can be used to store software programs or instructions and various data. The memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1009 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 1009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0515] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1010.

[0516] The radio frequency unit 1001 is used to receive first information from a first remote terminal; the processor 1010 is used to generate second information according to the first information, and control the radio frequency unit 1001 to send the second information through the MHRN; or,

[0517] The processor 1010 is configured to obtain second information, generate first information according to the second information, and control the radio frequency unit 1001 to send the first information to the first remote terminal;

[0518] The first information is information sent or received via a single-hop relay network; the second information is information sent or received via an MHRN.

[0519] Optionally, in the case where the relay terminal 1000 receives first information from the first remote terminal, if the first information includes a first discovery message or a first communication request message, the second information generated according to the first information includes a second discovery message or a second communication request message;

[0520] The first discovery message or the first communication request message is used to establish a wireless link between the first remote terminal and a first node, and the first node is a target service base station or a target remote terminal of the first remote terminal.

[0521] Optionally, in the case where the relay terminal 1000 receives first information from the first remote terminal, if the first information includes a protocol data unit SRAP PDU of a sidelink relay adaptation protocol in a first format, the second information generated according to the first information includes a SRAP PDU in a second format;

[0522] The first format is adapted to the single-hop relay network, and the second format is adapted to the MHRN.

[0523] Optionally, when the relay terminal 1000 acquires the second information and generates the first information according to the second information, if the second information includes a second response message, the first information generated according to the second information includes a first response message;

[0524] The second response message is received by the first relay terminal through the MHRN, and the first response message and the second response message are used to carry response information from the first node.

[0525] Optionally, when the relay terminal 1000 acquires the second information and generates the first information according to the second information, if the second information includes a fourth response message, the first information generated according to the second information includes a third response message;

[0526] Among them, the fourth response message is received by the first relay terminal through the MHRN, and is used to instruct the first relay terminal and the first node to continue the relevant signaling process of establishing a Uu connection for the first remote terminal; the third response message is used to instruct the first remote terminal to continue the relevant signaling process of establishing a Uu connection.

[0527] Optionally, when the relay terminal 1000 acquires the second information and generates the first information according to the second information, if the second information includes the SRAP PDU in the second format, the first information generated according to the second information includes the SRAP PDU in the first format;

[0528] The SRAP PDU in the second format is received by the first relay terminal through the MHRN.

[0529] Optionally, generating the SRAP PDU of the second format according to the SRAP PDU of the first format includes: modifying a first format SRAP header carried by the SRAP PDU of the first format to a second format SRAP header carried by the SRAP PDU of the second format;

[0530] or,

[0531] Generating the SRAP PDU of the first format according to the SRAP PDU of the second format includes: modifying the SRAP header of the second format carried by the SRAP PDU of the second format to the SRAP header of the first format carried by the SRAP PDU of the first format;

[0532] The first format SRAP header is applicable to a single-hop relay network, and the second format SRAP header is applicable to an MHRN.

[0533] Optionally, the sending of the second information by using the MHRN performed by the radio frequency unit 1001 includes:

[0534] When the first information includes a first discovery message or a first communication request message, and the second information generated based on the first information includes a second discovery message or a second communication request message, the second discovery message or the second communication request message is forwarded through the MHRN to initiate the wireless connection establishment process of the MHRN for the first remote terminal.

[0535] Optionally, the forwarding of the second discovery message or the second communication request message by the MHRN performed by the radio frequency unit 1001 to initiate a wireless connection establishment process of the MHRN for the first remote terminal includes:

[0536] forwarding the second discovery message or the second communication request message to the first node through the MHRN;

[0537] receiving, through the MHRN, a second response message, where the second response message is a response message to the second discovery message or the second communication request message;

[0538] Generate a first response message according to the second response message, where the first response message is a response message to the first discovery message or the first communication request message;

[0539] Sending the first response message to the first remote terminal.

[0540] Optionally, the forwarding of the second discovery message or the second communication request message by the MHRN performed by the radio frequency unit 1001 to initiate a wireless connection establishment process of the MHRN for the first remote terminal includes:

[0541] forwarding the second discovery message or the second communication request message through the MHRN;

[0542] generating a first response message according to a second response message from a second relay terminal, wherein the second relay terminal is a relay terminal adjacent to the first relay terminal in the MHRN;

[0543] Sending the first response message to the first remote terminal.

[0544] Optionally, the forwarding of the second discovery message or the second communication request message by the MHRN performed by the radio frequency unit 1001 to initiate a wireless connection establishment process of the MHRN for the first remote terminal includes:

[0545] forwarding the second discovery message or the second communication request message through the MHRN;

[0546] Receiving, through the MHRN, a fourth response message from a third relay terminal, wherein the third relay terminal has a wireless connection with the first node or supports establishing a wireless connection;

[0547] A third response message is generated according to the fourth response message, and the third response message is sent to the first remote terminal.

[0548] Optionally, when the first information includes a first discovery message or a first communication request message, and the second information generated according to the first information includes the second discovery message or the second communication request message, a manner of generating the second information according to the first information includes:

[0549] Fill at least part of the content of the first information field in the first discovery message or the first communication request message into the second information field of the second discovery message or the second communication request message.

[0550] Optionally, the method of generating the second information according to the first information further includes:

[0551] Fill in the third information field in the second discovery message or the second communication request message.

[0552] Optionally, when the second information includes the second discovery message or the second communication request message, the first information generated according to the second information includes a first discovery message or a first communication request message, and a manner of generating the first information according to the second information includes:

[0553] Fill at least part of the content in the second information field of the second discovery message or the second communication request message into the first information field of the first discovery message or the first communication request message.

[0554] Optionally, the method of generating the first information according to the second information further includes:

[0555] The third information field in the second discovery message or the second communication request message is removed.

[0556] Optionally, the third information field carries at least one of the following information:

[0557] Instructions for allowing MHRN to forward;

[0558] Multi-hop forwarding indication information;

[0559] The maximum number of hops allowed for forwarding;

[0560] The number of remaining forwarding hops;

[0561] Version information of a sender of the first discovery message or the first communication request message;

[0562] The capability information of the sender of the first discovery message or the first communication request message.

[0563] Optionally, in a case where the first information includes a first response message, the second information generated according to the first information includes the second response message, and a manner of generating the second information according to the first information includes:

[0564] Fill at least part of the content of the fourth information field in the first response message into the fifth information field of the second response message.

[0565] Optionally, the method of generating the second information according to the first information further includes:

[0566] Fill in the sixth information field in the second response message.

[0567] Optionally, when the second information includes the second response message, and the first information generated according to the second information includes a first response message, a manner of generating the first information according to the second information includes:

[0568] Fill at least part of the content of the fifth information field in the second response message into the fourth information field of the first response message.

[0569] Optionally, the method of generating the first information according to the second information further includes:

[0570] Remove the sixth information field in the second response message.

[0571] Optionally, the sixth information field carries at least one of the following information:

[0572] Instructions for allowing MHRN to forward;

[0573] Multi-hop forwarding indication information;

[0574] The maximum number of hops allowed for forwarding;

[0575] The number of remaining forwarding hops;

[0576] Version information of the sender of the first response message;

[0577] The capability information of the sender of the first response message.

[0578] Optionally, the processor 1010 is further configured to obtain first configuration information, where the first configuration information is used by the first relay terminal to provide a communication service for the first remote terminal through the MHRN.

[0579] Optionally, the first configuration information is used by the first relay terminal to provide at least one of the following communication services for the first remote terminal through the MHRN:

[0580] The first remote terminal communicates with a second remote terminal through the MHRN, wherein the second remote terminal is a terminal that performs wireless communication access based on a single-hop relay network protocol;

[0581] The first remote terminal communicates with a third remote terminal through the MHRN, wherein the third remote terminal is a terminal accessed based on a multi-hop relay network protocol;

[0582] The first remote terminal communicates with the network side device through the MHRN.

[0583] Optionally, the receiving of the first information from the first remote terminal performed by the radio frequency unit 1001 includes:

[0584] receiving a SRAP PDU in the first format from the first remote terminal;

[0585] The processor 1010 generates the second information according to the first information, and controls the radio frequency unit 1001 to send the second information through the MHRN, including:

[0586] Generate the SRAP PDU in the second format according to the SRAP PDU in the first format, and control the radio frequency unit 1001 to send the SRAP PDU in the second format based on the MHRN; or,

[0587] The acquiring of the second information executed by the processor 1010, generating the first information according to the second information, and controlling the radio frequency unit 1001 to send the first information to the first remote terminal includes:

[0588] Generate a SRAP PDU in the first format according to the SRAP PDU in the second format sent by the MHRN and whose receiving end is the first remote terminal, and control the radio frequency unit 1001 to send the SRAP PDU in the first format to the first remote terminal;

[0589] The first information includes the SRAP PDU in the first format; and the second information includes the SRAP PDU in the second format.

[0590] Optionally, the processor 1010 is also used to obtain target association information, wherein the target association information is used to indicate an association relationship between a first local identifier of the first remote terminal and a second local identifier of the first remote terminal; the first local identifier of the first remote terminal is used to identify the first remote terminal in the single-hop relay network; and the second local identifier of the first remote terminal is used to identify the first remote terminal in the MHRN.

[0591] Optionally, the receiving of the first information from the first remote terminal performed by the radio frequency unit 1001 includes:

[0592] Receiving first information from a first remote terminal;

[0593] The processor 1010 generates the second information according to the first information, and controls the radio frequency unit 1001 to send the second information through the MHRN, including:

[0594] Determine, according to the target association information, the second local identifier corresponding to the first local identifier in the first information;

[0595] Generate second information according to the first information and the second local identifier, and control the radio frequency unit 1001 to send the second information through the MHRN according to the second local identifier.

[0596] Optionally, the acquiring of the second information executed by the processor 1010, generating the first information according to the second information, and controlling the radio frequency unit 1001 to send the first information to the first remote terminal includes:

[0597] obtaining second information;

[0598] Determine, according to the target association information, the first local identifier corresponding to the second local identifier in the second information;

[0599] First information is generated according to the second information and the first local identifier, and the first information is sent to the first remote terminal according to the first local identifier.

[0600] Optionally, the acquiring target association information executed by the processor 1010 includes:

[0601] The target association information is received from the network side device through the radio frequency unit 1001.

[0602] Optionally, the acquiring target association information executed by the processor 1010 includes:

[0603] allocating a second local identifier to the first remote terminal;

[0604] The first local identifier of the first remote terminal is associated with the second local identifier of the first remote terminal to obtain the target association information.

[0605] Optionally, the radio frequency unit 1001 is further configured to send the target association information to the third relay terminal.

[0606] Optionally, the SRAP PDU in the first format includes a first format SRAP header, and the first format SRAP header includes at least one of the following:

[0607] A first source remote terminal identification field, carrying a first local identification of a source remote terminal of the SRAP PDU in the first format;

[0608] A first target remote terminal identification field, carrying a first local identification of the target remote terminal of the SRAP PDU in the first format;

[0609] End-to-end bearer identification;

[0610] A first path identifier, used to identify a path identifier from a source remote terminal of the SRAP PDU in the first format to a target remote terminal of the SRAP PDU in the first format;

[0611] or,

[0612] The SRAP PDU in the second format includes a SRAP header in the second format, and the SRAP header in the second format includes at least one of the following:

[0613] A second source remote terminal identification field, carrying a second local identification of the source remote terminal of the SRAP PDU in the second format;

[0614] A second target remote terminal identification field, carrying a second local identification of the target remote terminal of the SRAP PDU in the second format;

[0615] The sending direction of the SRAP PDU in the second format;

[0616] The end-to-end bearer identification;

[0617] A second path identifier, where the second path identifier is used to forward the SRAPPDU in the second format in the MHRN.

[0618] Optionally, the second format SRAP header and the first format SRAP header satisfy at least one of the following:

[0619] At least one information field of the second format SRAP header has a different length from a corresponding information field of the first format SRAP header;

[0620] At least one information field of the second format SRAP header has a value different from a corresponding information field of the first format SRAP header;

[0621] At least one information field of the second format SRAP header and a corresponding information field of the first format SRAP header are allocated by different nodes;

[0622] The second format SRAP header has at least one third information field, and the at least one third information field has no corresponding information field in the first format SRAP header;

[0623] The first-format SRAP header has at least one fourth information field, and the at least one fourth information field has no corresponding information field in the second-format SRAP header.

[0624] Optionally, the processor 1010 is further configured to obtain second configuration information, where the second configuration information is used to configure a conversion rule between the SRAP PDU in the first format and the SRAP PDU in the second format.

[0625] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the following Figure 5 The relevant descriptions of the method embodiments shown in the figure achieve the same or corresponding technical effects, and will not be repeated here to avoid repetition.

[0626] The embodiment of the present application also provides a network side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Figure 6 The steps of the method embodiment shown. This network side device embodiment corresponds to the above network side device method embodiment, and each implementation process and implementation mode of the above method embodiment can be applied to this network side device embodiment and can achieve the same technical effect.

[0627] Specifically, the embodiment of the present application also provides a network side device. Fig.11 As shown, the network side device 110 includes: an antenna 111, a radio frequency device 112, a baseband device 113, a processor 114 and a memory 115. The antenna 111 is connected to the radio frequency device 112. In the uplink direction, the radio frequency device 112 receives information through the antenna 111 and sends the received information to the baseband device 113 for processing. In the downlink direction, the baseband device 113 processes the information to be sent and sends it to the radio frequency device 112, and the radio frequency device 112 processes the received information and sends it out through the antenna 111.

[0628] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 113, which includes a baseband processor.

[0629] The baseband device 113 may include, for example, at least one baseband board on which a plurality of chips are arranged. Fig.11 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 115 through a bus interface to call the program in the memory 115 to execute the network device operations shown in the above method embodiment.

[0630] The network side device may further include a network interface 116, which is, for example, a Common Public Radio Interface (CPRI).

[0631] Specifically, the network side device 110 of the embodiment of the present application further includes: instructions or programs stored in the memory 115 and executable on the processor 114, and the processor 114 calls the instructions or programs in the memory 115 to execute the following steps: Figure 8 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0632] The embodiment of the present application also provides a readable storage medium on which a program or instruction is stored. When the program or instruction is executed by a processor, the following is implemented: Figure 5 or Figure 6 The various processes of the method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0633] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0634] The present application embodiment further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, the processor is used to run a program or instruction, to implement the following Figure 5 or Figure 6 The various processes of the method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0635] 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.

[0636] The present application embodiment further provides a computer program / program product, wherein the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the following Figure 5 or Figure 6 The various processes of the method embodiment shown can achieve the same technical effect, and will not be described again here to avoid repetition.

[0637] The embodiment of the present application also provides a wireless communication system, including: a relay terminal and a network side device, wherein the relay terminal can be used to perform the following steps: Figure 5 The steps of the method embodiment shown in the figure, the network side device can be used to perform the following steps: Figure 6 Steps of the method embodiment are shown.

[0638] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0639] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[0640] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. A method for serving a remote terminal in a multi-hop relay network MHRN, characterized in that: The method comprises at least one of the following: The first relay terminal receives first information from the first remote terminal, generates second information according to the first information, and sends the second information through the MHRN; The first relay terminal acquires the second information, generates the first information according to the second information, and sends the first information to the first remote terminal; The first information is information sent or received via a single-hop relay network; the second information is information sent or received via an MHRN.

2. The method according to claim 1, characterized in that In the case where the first relay terminal receives first information from the first remote terminal, if the first information includes a first discovery message or a first communication request message, the second information generated according to the first information includes a second discovery message or a second communication request message; The first discovery message or the first communication request message is used to establish a wireless link between the first remote terminal and a first node, and the first node is a target service base station or a target remote terminal of the first remote terminal.

3. The method according to claim 1 or 2, characterized in that: In the case where the first relay terminal receives first information from the first remote terminal, if the first information includes a sidelink relay adaptation protocol protocol data unit SRAP PDU in a first format, the second information generated based on the first information includes a SRAP PDU in a second format; The first format is adapted to the single-hop relay network, and the second format is adapted to the MHRN.

4. The method according to any one of claims 1 to 3, characterized in that In a case where the first relay terminal acquires the second information and generates the first information according to the second information, if the second information includes a second response message, the first information generated according to the second information includes the first response message; The second response message is received by the first relay terminal through the MHRN, and the first response message and the second response message are used to carry response information from the first node.

5. The method according to any one of claims 1 to 4, characterized in that In a case where the first relay terminal acquires the second information and generates the first information according to the second information, if the second information includes a fourth response message, the first information generated according to the second information includes a third response message; Among them, the fourth response message is received by the first relay terminal through the MHRN, and is used to instruct the first relay terminal and the first node to continue the relevant signaling process of establishing a Uu connection for the first remote terminal; the third response message is used to instruct the first remote terminal to continue the relevant signaling process of establishing a Uu connection.

6. The method according to any one of claims 1 to 5, characterized in that In a case where the first relay terminal acquires the second information and generates the first information according to the second information, if the second information includes the SRAP PDU in the second format, the first information generated according to the second information includes the SRAP PDU in the first format; The SRAP PDU in the second format is received by the first relay terminal through the MHRN.

7. The method according to any one of claims 3 to 6, characterized in that: Generating the SRAP PDU of the second format according to the SRAP PDU of the first format includes: modifying the SRAP header of the first format carried by the SRAP PDU of the first format to the SRAP header of the second format carried by the SRAP PDU of the second format; or, Generating the SRAP PDU of the first format according to the SRAP PDU of the second format includes: modifying the SRAP header of the second format carried by the SRAP PDU of the second format to the SRAP header of the first format carried by the SRAP PDU of the first format; The first format SRAP header is applicable to a single-hop relay network, and the second format SRAP header is applicable to an MHRN.

8. The method according to any one of claims 2 to 6, characterized in that In a case where the first information includes a first discovery message or a first communication request message, and the second information generated according to the first information includes a second discovery message or a second communication request message, the first relay terminal sending the second information through the MHRN includes: The first relay terminal forwards the second discovery message or the second communication request message via the MHRN, and initiates a wireless connection establishment process of the MHRN for the first remote terminal.

9. The method according to claim 8, characterized in that The first relay terminal forwards the second discovery message or the second communication request message through the MHRN, and initiates a wireless connection establishment process of the MHRN for the first remote terminal, including: The first relay terminal forwards the second discovery message or the second communication request message to the first node through the MHRN; The first relay terminal receives a second response message through the MHRN, where the second response message is a response message to the second discovery message or the second communication request message; The first relay terminal generates a first response message according to the second response message, where the first response message is a response message to the first discovery message or the first communication request message; The first relay terminal sends the first response message to the first remote terminal.

10. The method according to claim 8, characterized in that The first relay terminal forwards the second discovery message or the second communication request message through the MHRN, and initiates a wireless connection establishment process of the MHRN for the first remote terminal, including: The first relay terminal forwards the second discovery message or the second communication request message through the MHRN; The first relay terminal generates a first response message according to a second response message from a second relay terminal, wherein the second relay terminal is a relay terminal adjacent to the first relay terminal in the MHRN; The first relay terminal sends the first response message to the first remote terminal.

11. The method according to claim 8, characterized in that The first relay terminal forwards the second discovery message or the second communication request message through the MHRN, and initiates a wireless connection establishment process of the MHRN for the first remote terminal, including: The first relay terminal forwards the second discovery message or the second communication request message through the MHRN; The first relay terminal receives a fourth response message from a third relay terminal through the MHRN, wherein the third relay terminal has a wireless connection with the first node or supports establishing a wireless connection; The first relay terminal generates a third response message according to the fourth response message, and sends the third response message to the first remote terminal.

12. The method according to any one of claims 2 to 11, characterized in that In a case where the first information includes a first discovery message or a first communication request message, and the second information generated according to the first information includes the second discovery message or the second communication request message, a manner of generating the second information according to the first information includes: Fill at least part of the content of the first information field in the first discovery message or the first communication request message into the second information field in the second discovery message or the second communication request message.

13. The method according to claim 12, characterized in that The method of generating the second information according to the first information also includes: Fill in the third information field in the second discovery message or the second communication request message.

14. The method according to any one of claims 1 to 13, characterized in that In a case where the second information includes the second discovery message or the second communication request message, the first information generated according to the second information includes the first discovery message or the first communication request message, and a manner of generating the first information according to the second information includes: Fill at least part of the content in the second information field of the second discovery message or the second communication request message into the first information field of the first discovery message or the first communication request message.

15. The method according to claim 14, characterized in that The method of generating the first information according to the second information also includes: The third information field in the second discovery message or the second communication request message is removed.

16. The method according to any one of claims 13 to 15, characterized in that in, The third information field carries at least one of the following information: Instructions for allowing MHRN to forward; Multi-hop forwarding indication information; The maximum number of hops allowed for forwarding; The number of remaining forwarding hops; Version information of a sender of the first discovery message or the first communication request message; The capability information of the sender of the first discovery message or the first communication request message.

17. The method according to any one of claims 1 to 16, characterized in that In the case where the first information includes a first response message, the second information generated according to the first information includes the second response message, and a manner of generating the second information according to the first information includes: Fill at least part of the content of the fourth information field in the first response message into the fifth information field of the second response message.

18. The method according to claim 17, characterized in that The method of generating the second information according to the first information also includes: Fill in the sixth information field in the second response message.

19. The method according to any one of claims 1 to 18, characterized in that In a case where the second information includes the second response message, and the first information generated according to the second information includes the first response message, a manner of generating the first information according to the second information includes: Fill at least part of the content of the fifth information field in the second response message into the fourth information field of the first response message.

20. The method according to claim 19, characterized in that The method of generating the first information according to the second information also includes: Remove the sixth information field in the second response message.

21. The method according to any one of claims 18 to 20, characterized in that in, The sixth information field carries at least one of the following information: Instructions for allowing MHRN to forward; Multi-hop forwarding indication information; The maximum number of hops allowed for forwarding; The number of remaining forwarding hops; Version information of the sender of the first response message; The capability information of the sender of the first response message.

22. The method according to any one of claims 1 to 21, characterized in that The method further comprises: The first relay terminal acquires first configuration information, where the first configuration information is used by the first relay terminal to provide communication services for the first remote terminal through the MHRN.

23. The method according to claim 22, characterized in that The first configuration information is used for the first relay terminal to provide at least one of the following communication services for the first remote terminal through the MHRN: The first remote terminal communicates with a second remote terminal through the MHRN, wherein the second remote terminal is a terminal that performs wireless communication access based on a single-hop relay network protocol; The first remote terminal communicates with a third remote terminal through the MHRN, wherein the third remote terminal is a terminal accessed based on a multi-hop relay network protocol; The first remote terminal communicates with the network side device through the MHRN.

24. The method according to any one of claims 1 to 23, characterized in that: The first relay terminal receives first information from a first remote terminal, generates second information according to the first information, and sends the second information through the MHRN, including: the first relay terminal generates a SRAP PDU in the second format according to the SRAP PDU in the first format from the first remote terminal, and sends the SRAP PDU in the second format based on the MHRN; or, The first relay terminal acquires the second information, generates the first information according to the second information, and sends the first information to the first remote terminal, including: the first relay terminal generates the SRAP PDU in the first format according to the SRAP PDU in the second format sent by the MHRN and the receiving end of which is the first remote terminal, and sends the SRAP PDU in the first format to the first remote terminal; The first information includes the SRAP PDU in the first format; and the second information includes the SRAP PDU in the second format.

25. The method according to any one of claims 1 to 24, characterized in that The method further comprises: The first relay terminal obtains target association information, wherein the target association information is used to indicate an association relationship between a first local identifier of the first remote terminal and a second local identifier of the first remote terminal; the first local identifier of the first remote terminal is used to identify the first remote terminal in the single-hop relay network; and the second local identifier of the first remote terminal is used to identify the first remote terminal in the MHRN.

26. The method according to claim 25, characterized in that The first relay terminal receives first information from a first remote terminal, generates second information according to the first information, and sends the second information through the MHRN, including: The first relay terminal receives first information from a first remote terminal, and determines the second local identifier corresponding to the first local identifier in the first information according to the target association information; The first relay terminal generates second information according to the first information and the second local identifier, and sends the second information through the MHRN according to the second local identifier.

27. The method according to claim 25, characterized in that The first relay terminal acquires second information, generates first information according to the second information, and sends the first information to the first remote terminal, including: The first relay terminal acquires second information; The first relay terminal determines, according to the target association information, the first local identifier corresponding to the second local identifier in the second information; The first relay terminal generates first information according to the second information and the first local identifier, and sends the first information to the first remote terminal according to the first local identifier.

28. The method according to any one of claims 25 to 27, characterized in that The first relay terminal acquires target association information, including: The first relay terminal receives the target association information from a network side device.

29. The method according to any one of claims 25 to 27, characterized in that The first relay terminal acquires target association information, including: The first relay terminal allocates a second local identifier to the first remote terminal; The first relay terminal associates the first local identifier of the first remote terminal with the second local identifier of the first remote terminal to obtain the target association information.

30. The method according to claim 29, characterized in that The method further comprises: The first relay terminal sends the target associated information to the third relay terminal.

31. The method according to any one of claims 24 to 30, characterized in that: The SRAP PDU in the first format includes a SRAP header in the first format, and the SRAP header in the first format includes at least one of the following: A first source remote terminal identification field, carrying a first local identification of a source remote terminal of the SRAP PDU in the first format; A first target remote terminal identification field, carrying a first local identification of the target remote terminal of the SRAP PDU in the first format; End-to-end bearer identification; A first path identifier, used to identify a path identifier from a source remote terminal of the SRAP PDU in the first format to a target remote terminal of the SRAP PDU in the first format; or, The SRAP PDU in the second format includes a SRAP header in the second format, and the SRAP header in the second format includes at least one of the following: A second source remote terminal identification field, carrying a second local identification of the source remote terminal of the SRAP PDU in the second format; A second target remote terminal identification field, carrying a second local identification of the target remote terminal of the SRAP PDU in the second format; The sending direction of the SRAP PDU in the second format; The end-to-end bearer identifier; A second path identifier, where the second path identifier is used to forward the SRAP PDU in the second format in the MHRN.

32. The method according to any one of claims 24 to 31, characterized in that The second format SRAP header and the first format SRAP header satisfy at least one of the following: At least one information field of the second format SRAP header has a different length from a corresponding information field of the first format SRAP header; At least one information field of the second format SRAP header has a value different from a corresponding information field of the first format SRAP header; At least one information field of the second format SRAP header and a corresponding information field of the first format SRAP header are allocated by different nodes; The second format SRAP header has at least one third information field, and the at least one third information field has no corresponding information field in the first format SRAP header; The first-format SRAP header has at least one fourth information field, and the at least one fourth information field has no corresponding information field in the second-format SRAP header.

33. The method according to any one of claims 24 to 32, characterized in that The method further comprises: The first relay terminal acquires second configuration information, where the second configuration information is used to configure a conversion rule between the SRAP PDU in the first format and the SRAP PDU in the second format.

34. A configuration method, characterized in that: The method comprises: The network side device sends first configuration information to the first relay terminal, where the first configuration information is used by the first relay terminal to provide communication services to the first remote terminal through the multi-hop relay network MHRN. The first remote terminal is a terminal that performs wireless communication access based on a single-hop relay network protocol.

35. The method according to claim 34, characterized in that The first configuration information is used for the first relay terminal to provide at least one of the following communication services for the first remote terminal through the MHRN: The first remote terminal communicates with a second remote terminal through the MHRN, wherein the second remote terminal is a terminal that performs wireless communication access based on the single-hop relay network protocol; The first remote terminal communicates with a third remote terminal through the MHRN, wherein the third remote terminal is a terminal accessed based on a multi-hop relay network protocol; The first remote terminal communicates with the network side device through the MHRN.

36. The method according to claim 34 or 35, characterized in that The method further comprises: The network side device sends second configuration information to the first relay terminal, and the second configuration information is used to configure a conversion rule between a protocol data unit SRAP PDU of a sidelink relay adaptation protocol in a first format and an SRAP PDU in a second format, wherein the first format is adapted to the single-hop relay network and the second format is adapted to the MHRN.

37. The method according to claim 36, characterized in that: The SRAP PDU in the first format includes a SRAP header in the first format, and the SRAP header in the first format includes at least one of the following: A first source remote terminal identification field, carrying a first local identification of a source remote terminal of the SRAP PDU in the first format; A first target remote terminal identification field, carrying a first local identification of the target remote terminal of the SRAP PDU in the first format; End-to-end bearer identification; A first path identifier, used to identify a path identifier from a source remote terminal of the SRAP PDU in the first format to a target remote terminal of the SRAP PDU in the first format; or, The SRAP PDU in the second format includes a SRAP header in the second format, and the SRAP header in the second format includes at least one of the following: A second source remote terminal identification field, carrying a second local identification of the source remote terminal of the SRAP PDU in the second format; A second target remote terminal identification field, carrying a second local identification of the target remote terminal of the SRAP PDU in the second format; The sending direction of the SRAP PDU in the second format; The end-to-end bearer identifier; A second path identifier, where the second path identifier is used to forward the SRAP PDU in the second format in the MHRN.

38. The method according to any one of claims 34 to 37, characterized in that In the case where the MHRN includes the network side device, the method further includes: The network side device allocates a second local identifier to the first remote terminal, where the second local identifier of the first remote terminal is used to identify the first remote terminal in the MHRN; The network side device sends target association information to at least one of the first relay terminal and the third relay terminal; Among them, the target association information is used to indicate the association relationship between the first local identifier of the first remote terminal and the second local identifier of the first remote terminal; the first local identifier of the first remote terminal is used to identify the first remote terminal in the single-hop relay network; the first relay terminal is a relay terminal in the MHRN that provides access services based on the single-hop relay network protocol for the first remote terminal, or the third relay terminal is a relay terminal in the MHRN that provides access services for the first node, and the first node is the target service base station or target remote terminal of the first remote terminal.

39. A device for serving a remote terminal in a multi-hop relay network MHRN, characterized in that: Applied to a first relay terminal, the device includes at least one of the following: A first processing module, configured to receive first information from a first remote terminal, generate second information according to the first information, and send the second information through the MHRN; A second processing module, configured to obtain second information, generate first information according to the second information, and send the first information to a first remote terminal; The first information is information sent or received via a single-hop relay network; the second information is information sent or received via an MHRN.

40. A configuration device, characterized in that: Applied to a network side device, the device comprises: The first sending module is used to send first configuration information to the first relay terminal, where the first configuration information is used by the first relay terminal to provide communication services for the first remote terminal through the multi-hop relay network MHRN, and the first remote terminal is a terminal for wireless communication access based on the single-hop relay network protocol.

41. A terminal, characterized in that: It comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method for serving a remote terminal in a multi-hop relay network MHRN as described in any one of claims 1 to 33 are implemented.

42. A network side device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the configuration method according to any one of claims 34 to 38 are implemented.

43. A readable storage medium, characterized in that The readable storage medium stores programs or instructions, and when the programs or instructions are executed by the processor, they implement the steps of the method for serving a remote terminal in a multi-hop relay network MHRN as described in any one of claims 1 to 33, or implement the steps of the configuration method as described in any one of claims 34 to 38.

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