Relay communication method and device, equipment, storage medium and program product

Abstract

The invention discloses a relay communication method and device, equipment, a storage medium and a program product, and relates to the technical field of communication. The method comprises: a terminal device sending a first message to a first network device, the first message comprising service information supported by at least one relay device (340). The service information supported by at least one relay device is sent to the first network device through the terminal device, and the first network device is assisted to determine the first relay device used for transmitting the first service, so that the first network device can select the relay device suitable for the first service communication, the link management of the relay network is realized, and the user experience is improved. And the service transmission reliability is improved.

Description

Relay communication method, device, equipment, storage medium and program product Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to a relay communication method, apparatus, device, storage medium, and program product. Background Art

[0002] In relay communications, all services can be sent and received via relay devices. Therefore, for terminal devices, the only consideration is signal quality to determine whether to serve the terminal device via a direct link, an indirect link, or a combination of direct and indirect links.

[0003] Related technologies require that emergency services and non-emergency services cannot communicate using the same logical channel of a relay device (this means that different logical channels of the same relay device or different relay devices can be used). Therefore, relay communication for different services requires further research and discussion.

[0004] Summary of the Invention

[0005] The present invention provides a relay communication method, apparatus, device, storage medium, and program product. The technical solution is as follows:

[0006] According to one aspect of an embodiment of the present application, a relay communication method is provided, the method being executed by a terminal device, the method comprising:

[0007] A first message is sent to a first network device, where the first message includes service information supported by at least one relay device.

[0008] According to one aspect of an embodiment of the present application, a relay communication method is provided, the method being performed by a first network device, the method comprising:

[0009] A first message sent by a terminal device is received, where the first message includes service information supported by at least one relay device.

[0010] According to one aspect of an embodiment of the present application, a relay communication method is provided, the method being executed by a terminal device, the method comprising:

[0011] receiving configuration information sent by a network device, where the configuration information is used to configure relay transmission related to at least two services;

[0012] Relay transmission is performed on at least one of the at least two services according to the configuration information.

[0013] According to one aspect of an embodiment of the present application, a relay communication method is provided, the method being executed by a terminal device, the method comprising:

[0014] receiving configuration information sent by a network device, where the configuration information is used to configure relay transmission related to at least two services;

[0015] Relay transmission is performed on at least one of the at least two services according to the configuration information.

[0016] According to one aspect of an embodiment of the present application, a relay communication method is provided, the method being executed by a terminal device, the method comprising:

[0017] In the event of a radio link failure in a first relay connection used for a first service, a reporting message is sent to a network device via a second connection used for a second service, wherein the reporting message is used to indicate that a radio link failure has occurred in the first relay connection; wherein the first service and the second service are different.

[0018] According to one aspect of an embodiment of the present application, a relay communication method is provided, the method being performed by a network device, the method comprising:

[0019] A reporting message is received from a terminal device via a second connection for a second service, where the reporting message indicates that a radio link failure occurs in a first relay connection for a first service; wherein the first service and the second service are different.

[0020] According to one aspect of an embodiment of the present application, a relay communication device is provided, the device comprising:

[0021] A sending module is configured to send a first message to a first network device, wherein the first message includes service information supported by at least one relay device. According to one aspect of an embodiment of the present application, a relay communication device is provided, the device comprising:

[0022] The receiving module is used to receive a first message sent by a terminal device, where the first message includes service information supported by at least one relay device.

[0023] According to one aspect of an embodiment of the present application, a relay communication device is provided, the device comprising:

[0024] A receiving module, configured to receive configuration information sent by a network device, wherein the configuration information is used to configure relay transmission related to at least two services;

[0025] A processing module is used to relay and transmit at least one of the at least two services according to the configuration information.

[0026] According to one aspect of an embodiment of the present application, a relay communication device is provided, the device comprising:

[0027] The sending module is used to send configuration information to the terminal device, where the configuration information is used to configure relay transmission related to at least two services.

[0028] According to one aspect of an embodiment of the present application, a relay communication device is provided, the device comprising:

[0029] A sending module is used to send a reporting message to a network device through a second connection for a second service when a wireless link failure occurs in a first relay connection for a first service, wherein the reporting message is used to indicate that a wireless link failure occurs in the first relay connection; wherein the first service and the second service are different.

[0030] According to one aspect of an embodiment of the present application, a relay communication device is provided, the device comprising:

[0031] A receiving module is used to receive a reporting message sent by a terminal device through a second connection used for a second service, wherein the reporting message indicates that a radio link failure occurs in a first relay connection used for a first service; wherein the first service and the second service are different.

[0032] According to one aspect of an embodiment of the present application, a communication device is provided, comprising a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program to implement any of the above-mentioned relay communication methods.

[0033] According to one aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which a computer program is stored. The computer program is configured to be executed by a processor to implement any of the above-mentioned relay communication methods.

[0034] According to one aspect of an embodiment of the present application, a chip is provided, which includes a programmable logic circuit and / or program instructions, and when the chip is running, is used to implement any of the above-mentioned relay communication methods.

[0035] According to one aspect of an embodiment of the present application, a computer program product is provided, which includes a computer program stored in a computer-readable storage medium, and a processor reads and executes the computer program from the computer-readable storage medium to implement any of the above-mentioned relay communication methods.

[0036] The technical solutions provided by the embodiments of the present application may have the following beneficial effects:

[0037] By sending service information supported by at least one relay device to the first network device through the terminal device, the first network device is assisted in determining the first relay device used to transmit the first service, so that the first network device can select a relay device suitable for the first service communication, thereby realizing the management of the link of the relay network and improving the reliability of service transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] FIG1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

[0039] FIG2 is a schematic diagram of relay communication provided by an embodiment of the present application;

[0040] FIG3 is a flow chart of a relay communication method provided by one embodiment of the present application;

[0041] FIG4 is a schematic diagram of a method for determining a relay device provided by an embodiment of the present application;

[0042] FIG5 is a flowchart of a relay communication method provided by another embodiment of the present application;

[0043] FIG6 is a flowchart of a relay communication method provided by another embodiment of the present application;

[0044] FIG7 is a flowchart of a relay communication method provided by another embodiment of the present application;

[0045] FIG8 is a block diagram of a relay communication device provided by one embodiment of the present application;

[0046] FIG9 is a block diagram of a relay communication device provided by another embodiment of the present application;

[0047] FIG10 is a block diagram of a relay communication device provided by another embodiment of the present application;

[0048] FIG11 is a block diagram of a relay communication device provided by another embodiment of the present application;

[0049] FIG12 is a block diagram of a relay communication device provided by another embodiment of the present application;

[0050] FIG13 is a block diagram of a relay communication device provided by another embodiment of the present application;

[0051] FIG14 is a schematic structural diagram of a terminal device provided by an embodiment of the present application;

[0052] FIG15 is a schematic diagram of the structure of a network device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0053] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0054] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. A person skilled in the art will appreciate that, with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0055] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0056] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0057] The communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) networking scenario.

[0058] The communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, where the authorized spectrum can also be considered as an unshared spectrum.

[0059] The embodiments of the present application can be applied to non-terrestrial networks (NTN) systems, and can also be applied to terrestrial networks (TN) systems.

[0060] Please refer to FIG1 , which shows a schematic diagram of a system architecture provided by an embodiment of the present application. The system architecture 100 may include: a terminal device 10 , an access network device 20 , and a core network device 30 .

[0061] The terminal device 10 may refer to a UE (User Equipment), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent or user device, or a relay terminal device. Optionally, the terminal device may also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5GS or a terminal device in a future evolved PLMN (Public Land Mobile Network), etc., and the embodiments of the present application are not limited thereto. For ease of description, the above-mentioned devices are collectively referred to as terminal devices. The number of terminal devices 10 is generally multiple, and one or more terminal devices 10 may be distributed in each cell managed by an access network device 20.

[0062] Access network equipment 20 is a device deployed in an access network to provide wireless communication capabilities for terminal device 10. Access network equipment 20 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different wireless access technologies, the names of devices that provide access network equipment functions may vary. For example, in 5G NR systems, they are referred to as gNodeBs or gNBs. As communication technologies evolve, the term "access network equipment" may change. For ease of description, in the embodiments of this application, the aforementioned devices that provide wireless communication capabilities for terminal device 10 are collectively referred to as access network equipment. Optionally, a communication relationship can be established between terminal device 10 and core network equipment 30 through access network equipment 20. For example, in an LTE system, access network equipment 20 may be one or more eNodeBs in the EUTRAN (Evolved Universal Terrestrial Radio Access Network); in a 5G NR system, access network equipment 20 may be one or more gNBs in the RAN (Radio Access Network).

[0063] The core network device 30 mainly provides user connection, user management, and service bearer, and provides an interface to the external network as a bearer network. For example, the core network equipment in the 5G NR system may include devices such as the AMF (Access and Mobility Management Function) entity, the UPF (User Plane Function) entity, and the SMF (Session Management Function) entity.

[0064] In one example, the access network device 20 and the core network device 30 communicate with each other via some air technology, such as the NG (Next Generation) interface in the 5G NR system. The access network device 20 and the terminal device 10 communicate with each other via some air technology, such as the Uu interface.

[0065] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) on the carrier used by the cell. The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0066] In the embodiments of this application, "terminal device" and "UE" are often used interchangeably and have the same meaning. Unless otherwise specified, "network device" generally refers to "access network equipment", such as a base station. Where otherwise specified, "network device" may also refer to "core network equipment", such as an AMF.

[0067] Before introducing the technical solutions of this application, we first introduce and explain some of the background technologies involved in this application. The following related technologies can be combined with the technical solutions of the embodiments of this application as optional solutions, and they all fall within the scope of protection of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0068] In the related art, a layer 2 terminal-to-network relay transmission method is introduced, which enables communication between a terminal device (also referred to as a Remote UE, remote terminal, or remote UE in this embodiment of the application) and a network device (such as a base station, gNB) through a relay device (also referred to as a UE-to-Network Relay UE, relay terminal, or relay UE in this embodiment of the application). The adaptation layer is placed above the control plane and user plane RLC sublayer at the Uu interface between the relay device and the network device. The Uu SDAP (Service Data Adaptation Protocol) / PDCP (Packet Data Convergence Protocol) and RRC (Radio Resource Control) terminate between the terminal device and the network device, while the RLC (Radio Link Control), MAC (Medium Access Control), and PHY (Physical layer) terminate in each link (i.e., the link between the terminal device and the relay device and the link between the relay device and the network device).

[0069] As shown in Figure 2, the relay device does not need to process Uu-SDAP and Uu-PDCP, while the terminal device and the network device need to process Uu-SDAP and Uu-PDCP, so it can be said that Uu SDAP / PDCP and RRC are terminated between the terminal device and the network device; the terminal device, the relay device and the network device all need to process RLC, MAC and PHY, so it can be said that RLC, MAC and PHY are terminated in each link (that is, the link between the terminal device and the relay device and the link between the relay device and the network device).

[0070] For example, as shown in Figure 2, the information that needs to be transmitted by the terminal device is transmitted by the PC5-RLC of the terminal device through the PC5-MAC and PC5-PHY of the terminal device to the PC5-PHY of the relay device, and then by the PC5-PHY of the relay device through the PC5-MAC and PC5-RLC of the relay device to the Uu-RLC of the relay device, and then by the Uu-RLC of the relay device through the Uu-MAC and Uu-PHY of the relay device to the Uu-PHY of the network device.

[0071] For L2UE to network relay, uplink:

[0072] The Uu Adaptation Layer of the relay device supports uplink bearer mapping between incoming PC5 RLC channels for relaying and outgoing Uu RLC channels on the relay device's Uu path. For uplink relay services, different end-to-end bearers (SRBs (Signaling Radio Bearers) and DRBs (Data Radio Bearers)) on the same terminal device and / or different terminal devices can be mapped N:1 and data multiplexed on a single Uu RLC channel.

[0073] The Uu Adaptation Layer is used to support terminal device identification for uplink services (multiplexing data from multiple terminal devices). The terminal device Uu radio bearer and terminal device identification information are included in the uplink Uu Adaptation Layer so that network equipment can associate received data packets with a specific PDCP entity associated with the terminal device's Uu radio bearer.

[0074] For L2UE to network relay, downlink:

[0075] The Uu Adaptation Layer may be used to support downlink bearer mapping at the network device to map the end-to-end radio bearers (SRBs, DRBs) of the terminal device to Uu RLC channels via the relay device Uu path. The Uu Adaptation Layer may be used to support downlink N:1 bearer mapping and data multiplexing between a terminal device and / or multiple end-to-end radio bearers (DRBs, DRBs) of different terminal devices and a Uu RLC channel on the relay device Uu path.

[0076] The Uu adaptation layer needs to support terminal device identification for downlink services. The terminal device's Uu radio bearer identity information and terminal device identification information need to be placed in the Uu adaptation layer by the downlink network equipment so that the relay equipment can map the data packets received from the terminal device's Uu radio bearer to its associated PC5 RLC channel.

[0077] Please refer to Figure 3, which shows a flow chart of a relay communication method provided by an embodiment of the present application. The method can be applied to the network architecture shown in Figure 1. The method may include the following step 340:

[0078] Step 340: The terminal device sends a first message to the first network device, where the first message includes service information supported by at least one relay device.

[0079] Correspondingly, the first network device receives the first message sent by the terminal device.

[0080] The service information is used to indicate the service or service type.

[0081] In some embodiments, the service information supported by the relay device is used to indicate the services or service types supported by the relay device. Exemplarily, the service information supported by the relay device is used to indicate the services supported by the relay device, such as voice, traffic, and video, and another example is emergency services and non-emergency services. Exemplarily, the service information supported by the relay device is used to indicate the service types supported by the relay device, and this application does not limit the method for dividing service types. For example, service types include emergency service types and non-emergency service types; for another example, voice or traffic is one service type, and video is another service type.

[0082] It should be noted that the "business" mentioned in the embodiments of this application can also be replaced by "business type" and "business type" can also be replaced by "business". The new embodiments obtained by the above replacements should also be included in the scope of protection of this application.

[0083] In some embodiments, the service information includes at least one of the following: explicit indication information of the service; RSC (Relay Service Code); upper-layer information, which refers to information used by the service layer to distinguish services; and layer 2 ID (Identifier). The explicit indication information of the service refers to identification information used to identify the service or service type. Different services or service types correspond to different explicit indication information. In addition, there is a correspondence between the RSC, upper-layer information, or layer 2 ID, and the service or service type. Therefore, the corresponding service or service type can also be determined based on the RSC, upper-layer information, or layer 2 ID.

[0084] In some embodiments, a relay device may support one service type or multiple service types, which is not limited in this application. However, for the same service type, communication cannot be performed simultaneously on different relay devices. For example, a relay device supports one service type, for example, relay device 1 only supports service type 1, and relay device 2 only supports service type 2. For example, a relay device supports multiple service types, for example, relay device 1 supports service types 1, 2, and 3, and relay device 2 supports service types 4, 5, and 6.

[0085] In some embodiments, the at least one relay device may support only one service type, or may support multiple service types. For example, the at least one relay device includes relay device 1 and relay device 2. Relay device 1 supports only service type 1, while relay device 2 supports service types 2, 3, and 4.

[0086] In some embodiments, if a relay device supports multiple service types, the relay device supports different service types through different RSCs or different Layer 2 IDs. For example, if relay device 1 supports service type 1, service type 2, and service type 3, relay device 1 supports service type 1 through RSC1, service type 2 through RSC2, and service type 3 through RSC3. For example, if relay device 2 supports service type 4, service type 5, and service type 6, relay device 2 supports service type 4 through Layer 2 ID1, service type 5 through Layer 2 ID2, and service type 6 through Layer 2 ID3.

[0087] In some embodiments, this application does not limit the at least one relay device mentioned above. Exemplarily, the at least one relay device mentioned above may be all or part of the relay devices within the communication range of the terminal device, or may be a relay device within the communication range of the terminal device and located in the service cell corresponding to the first network device. Exemplarily, as shown in FIG4 , taking the terminal device as UE1 as an example, the at least one relay device mentioned above may be all relay devices (RelayUE1, RelayUE2, RelayUE3 and RelayUE4) within the communication range of UE1, or may be a relay device (RelayUE1, RelayUE3 and RelayUE4) within the communication range of UE1 and located in the service cell corresponding to the first network device. Exemplarily, the at least one relay device mentioned above may also be indicated by the network device, or may be determined based on the measurement and / or reporting configuration information provided by the network device.

[0088] In some embodiments, the first message may include a correspondence between the identification information of the relay device and the service information. The identification information of a relay device may correspond to service information of one service or may correspond to service information of multiple services, which is not limited in this application.

[0089] In some embodiments, the first message also includes a measurement result corresponding to at least one relay device, where the measurement result is used to indicate the link quality between the terminal device and the relay device.

[0090] This application does not limit the above measurement results. For example, the above measurement results can be RSRP (Reference Signal Received Power), RSSI (Received Signal Strength Indicator), RSRQ (Reference Signal Received Quality), and SINR (Signal to Interference plus Noise Ratio). For example, the measurement result refers to the RSRP between the terminal device and the relay device.

[0091] In some embodiments, the first message may include a correspondence between the identification information of the relay device and the service information and measurement results. For example, the first message includes the identification information of a relay device and the measurement results corresponding to the relay device, as well as service information for a service corresponding to the relay device, or service information for multiple services corresponding to the relay device. For example, the first message includes measurement results and service information corresponding to multiple relay devices, respectively.

[0092] In the above embodiments, the service information supported by at least one relay device and the measurement results corresponding to at least one relay device are sent in the same message (i.e., the first message) as an example. In some embodiments, the service information supported by at least one relay device and the measurement results corresponding to at least one relay device may also be sent in different messages, which is not limited in this application.

[0093] In some embodiments, the first message is any one of the following: MAC CE signaling sent by a terminal device to a first network device; an RRC message sent by a terminal device to the first network device; or an NGAP (Next Generation Application Protocol) message received by a core network device from a terminal device and indicated to the first network device. The MAC CE signaling sent by the terminal device to the first network device may be sent directly by the terminal device to the first network device, or sent by the terminal device to the first network device through a second relay device. For example, if the terminal device communicates with the first network device for a second service via the second relay device, the terminal device may send the above-mentioned MAC CE signaling to the first network device via the second relay device. The RRC message sent by the terminal device to the first network device may be sent directly by the terminal device to the first network device, or sent by the terminal device to the first network device via the second relay device. For example, if the terminal device communicates with the first network device for a second service via the second relay device, the terminal device may send the above-mentioned RRC message to the first network device via the second relay device. When the first message is sent using MAC CE signaling, the communication time required is short, but the reliability is not high; when the first message is sent using RRC message, the communication time required is long, but the reliability is high.

[0094] In some embodiments, if the first message is MAC CE signaling, the terminal device sends the first message to the first network device; if the first message is an RRC message, the terminal device sends the first message to the first network device; if the first message is a NAS message, the terminal device sends the NAS message to the core network device, and the core network device sends an NGAP message to the first network device based on the NAS message.

[0095] In some embodiments, if the first message is an RRC message, the first message may be UE assistance information (UEAssistanceInformation).

[0096] In an embodiment of the present application, service information supported by at least one relay device is sent to the first network device through the terminal device, assisting the first network device in determining the first relay device for transmitting the first service, so that the first network device can select a relay device suitable for the first service communication, thereby realizing the management of the links of the relay network and improving the reliability of service transmission.

[0097] In some embodiments, the method provided by the embodiments of the present application further includes the following steps: the terminal device sends a second message to the first network device, the second message being used to instruct the terminal device to start the first service communication and / or end the second service communication. Correspondingly, the first network device receives the second message sent by the terminal device.

[0098] In some embodiments, the terminal device performs second service communication with the first network device through the second relay device.

[0099] In some embodiments, during the process of the terminal device performing the second service communication with the first network device through the second relay device, the terminal device sends a second message to the first network device, and the second message is used to instruct the terminal device to start the first service communication and / or end the second service communication.

[0100] Optionally, the second message includes at least one of the following: indication information indicating the start of the first service, indication information indicating the end of the second service. Optionally, the second message also includes at least one of the following: indication information indicating the start time of the first service, indication information indicating the end time of the second service.

[0101] In some embodiments, the first service type is different from the second service type. For example, the first service type is emergency service, and the second service type is non-emergency service. For example, the first service type is non-emergency service, and the second service type is emergency service.

[0102] In some embodiments, before starting the first service communication, the terminal device sends a second message to the first network device, instructing the terminal device to start the first service. In some embodiments, before ending the second service communication, the terminal device sends a second message to the first network device, instructing the terminal device to end the second service.

[0103] In some embodiments, the first message and the second message may be one message or two messages, which is not limited in this application.

[0104] By sending the business that needs to be processed to the network device through the terminal device, the first network device is assisted in determining the business targeted by the first relay device, so that the first network device can select the relay device suitable for the first business communication, realizing the management of the link of the relay network and improving the reliability of business transmission.

[0105] In some embodiments, the method provided by the embodiments of the present application further includes the following steps: the terminal device measures and obtains measurement results corresponding to at least one relay device according to the measurement configuration information.

[0106] In some embodiments, the measurement configuration information is used to indicate the link quality between the terminal device and the relay device. Optionally, the measurement configuration information is used to configure the terminal device to measure the relay device. Optionally, the measurement configuration information can also be used to configure the relay device that the terminal device needs to measure. Optionally, the measurement configuration information can also be used to configure the service or service type for which the terminal device performs the measurement. Optionally, the measurement configuration information can also be used to configure the time when the terminal device starts the measurement. Optionally, the measurement configuration information can also be used to configure the parameters required to be measured by the terminal device, such as RSRP and SINR.

[0107] In some embodiments, the terminal device measures at least one relay device for the service included in the service information based on the service information included in the measurement configuration information, and obtains a measurement result. For example, the measurement configuration information includes service information for Service 1, Service 2, and Service 3. Based on the measurement configuration information, the terminal device measures at least one relay device for Service 1, Service 2, and Service 3. For example, the terminal device measures Relay Device 1 and Relay Device 2, where Relay Device 1 supports Service 1 and Relay Device 2 supports Service 2 and Service 3.

[0108] This application does not limit the method by which a terminal device measures a relay device. For example, the terminal device measures the relay device through a reference signal to obtain a measurement result RSRP corresponding to the relay device. For example, the terminal device sends a reference signal to the relay device, the relay device measures the received power of the reference signal, and sends the measured received power to the terminal device. For another example, the relay device sends reference information to the terminal device, the terminal device measures the received power of the reference signal, and obtains a measurement result RSRP corresponding to the relay device.

[0109] In some embodiments, the first network device sends measurement configuration information to the terminal device. Correspondingly, the terminal device receives the measurement configuration information sent by the first network device. Optionally, the measurement configuration information can be sent before or after receiving the second message, which is not limited in this application.

[0110] By sending the measurement results of at least one relay device to the network device through the terminal device, the first network device can select a relay device with better link quality for the first service communication based on the measurement results of at least one relay device, thereby improving the reliability of service transmission.

[0111] In some embodiments, the method provided by the embodiment of the present application further includes the following steps: the first network device sends a third message to the terminal device, the third message being used to instruct the terminal device to communicate through the first relay device. Accordingly, the terminal device receives the third message sent by the first network device.

[0112] In some embodiments, the third message includes at least one of the following: identification information of the first relay device; and service information supported by the first relay device.

[0113] In some embodiments, the identification information of the first relay device may further include identification information of a logical channel of the first relay device, which is not limited in this application. The identification information of the logical channel of the first relay device is used to uniquely identify or distinguish different logical channels of the first relay device.

[0114] In some embodiments, the third message is any one of the following: MAC CE signaling sent by the first network device to the terminal device; RRC message sent by the first network device to the terminal device; NAS (Non Access Stratum) message received by the core network device from the first network device and indicated to the terminal device.

[0115] In some embodiments, the first relay device is a relay device determined by the first network device for transmitting the first service. Optionally, the first relay device is determined in the at least one relay device mentioned above. Exemplarily, the first network device determines the second relay device based on the measurement result corresponding to at least one relay device sent by the terminal device. For example, based on the measurement result corresponding to at least one relay device sent by the terminal device, the relay device with the best link quality among the at least one relay device is determined as the first relay device. For example, based on the measurement result corresponding to at least one relay device sent by the terminal device, the relay device with the best link quality among the relay devices supporting the second service is determined as the first relay device.

[0116] In some embodiments, the first network device sends a third message to the terminal device, and the third message includes identification information of the first relay device. The terminal device then determines the first relay device for the first service communication based on the identification information of the first relay device. In some embodiments, the first network device sends a third message to the terminal device, and the third message includes identification information of the logical channel of the first relay device. The terminal device then determines the logical channel of the first relay device for the first service communication based on the identification information of the logical channel of the first relay device. In some embodiments, the first network device sends a third message to the terminal device, and the third message includes identification information of the first relay device and identification information of the logical channel of the first relay device. The terminal device then determines the logical channel of the first relay device for the first service communication based on the identification information of the logical channel of the first relay device.

[0117] In some embodiments, the service information supported by the first relay device includes at least one of the following: explicit indication information of the service; RSC; upper-layer information, which refers to information used by the service layer to distinguish services; and Layer 2 ID. Exemplarily, the service information supported by the second relay device is upper-layer information, which can be included in the third message in the form of a string.

[0118] In some embodiments, the third message is further used to instruct the terminal device to perform service communications through multiple relay devices. For example, the third message is used to instruct the terminal device to perform a first service communication through a first relay device and a third service communication through a second relay device. For example, the third message is used to instruct the terminal device to perform a first service communication through logical channel 1 of the first terminal device and a third service communication through logical channel 2 of the first relay device.

[0119] In some embodiments, the method provided in embodiments of the present application further includes the following steps: the first network device sends a fourth message to the second network device, where the fourth message includes at least one of the following: service information of the first service and information about services supported by at least one relay device. The first network device determines a first relay device to transmit the first service based on a negotiation result with the second network device.

[0120] In some embodiments, the service information of the first service includes at least one of the following: explicit indication information of the service; RSC; upper layer information, where the upper layer information refers to information used by the service layer to distinguish services; and layer 2 ID.

[0121] In some embodiments, the service information supported by at least one relay device includes at least one of the following: explicit indication information of the service; RSC; upper layer information, where the upper layer information refers to information used by the service layer to distinguish services; and layer 2 ID.

[0122] In some embodiments, the first network device and the second network device negotiate to determine the first relay device based on information about services supported by at least one relay device and information about the first service. For example, the first network device and the second network device determine at least one relay device that supports communications for the first service based on information about services supported by at least one relay device and information about the first service. Then, based on the operating status of the at least one relay device that supports communications for the first service, the first relay device is determined. For example, relay devices that are currently communicating with other services are excluded, and the first relay device is determined from at least one idle relay device that supports communications for the first service.

[0123] In some embodiments, the first network device determines a relay device that supports the first service based on service information supported by at least one relay device and service information of the first service. If it is determined that among the relay devices that support the first service, there is a relay device located in the service cell of the second network device, the first network device negotiates with the second network device and determines the first network device based on the negotiation result between the first network device and the second network device. For example, if the negotiation result between the first network device and the second network device is that the relay device located in the service cell of the second network device is busy, or the relay device located in the service cell of the first network device has better link quality, the first relay device is determined among the relay devices located in the service cell of the first network device. For another example, if the negotiation result between the first network device and the second network device is that the relay device located in the service cell of the second network device has better link quality and is idle, the relay device located in the service cell of the second network device is determined as the first relay device.

[0124] By sending the third message to the terminal device through the first network device, the terminal device can learn about the first relay device for the first service communication, thereby achieving management of the link of the relay network and improving the reliability of service transmission.

[0125] Please refer to Figure 5, which shows a flow chart of a relay communication method provided by another embodiment of the present application. The method can be applied to the network architecture shown in Figure 1. The method can include at least one of the following steps 510 to 570.

[0126] Step 510: The terminal device sends a second message to the first network device, where the second message is used to instruct the terminal device to start the first service communication and / or end the second service communication.

[0127] Step 520: The first network device sends measurement configuration information to the terminal device.

[0128] Step 530: The terminal device obtains a measurement result corresponding to at least one relay device according to the measurement configuration information. The measurement result is used to indicate the link quality between the terminal device and the relay device.

[0129] Step 540: The terminal device sends a first message to the first network device. The first message includes service information supported by at least one relay device and a measurement result corresponding to at least one relay device.

[0130] In some embodiments, the terminal device may also report the measurement results corresponding to at least one relay device to the first network device via other messages. That is, the service information and the measurement results are respectively carried by different messages. For example, the terminal device sends a measurement report message to the first network device, and the measurement report message is used to indicate the measurement results corresponding to at least one relay device. The measurement report message can be sent before the first message, or after the first message, or simultaneously with the first message, and this application does not limit this.

[0131] Step 550: The first network device sends a fourth message to the second network device, where the fourth message includes at least one of the following: service information of the first service, and service information supported by at least one relay device.

[0132] Step 560: The first network device determines a first relay device for transmitting the first service based on the negotiation result with the second network device.

[0133] Step 570: The first network device sends a third message to the terminal device, where the third message is used to instruct the terminal device to communicate through the first relay device.

[0134] In some embodiments, the above step 510 may not be performed. For example, when the first network device sends downlink data transmission to the terminal device, the process starts from step 520 where the first network device sends measurement configuration information to the terminal device.

[0135] It should be noted that the execution order of the above steps 510, 520, and 540 can be swapped. For example, step 520 can be executed before step 510 or after step 540 (for example, after executing step 530, the terminal device sends a measurement message to the first network, and the measurement message is used to indicate the measurement result corresponding to at least one relay device). This application does not limit the execution order between steps 510, 520, and 540. Step 530 needs to be executed after step 520, but the execution order of step 530, step 510, and step 540 can be swapped.

[0136] In addition, the technical solutions provided in the embodiments of the present application enable a terminal device to switch from performing M types of service communications to performing N types of service communications, or to switch from performing N types of service communications to performing M types of service communications. Where M is greater than N, M is an integer greater than 1, and N is a positive integer. For example, the terminal device switches from performing two types of service communications to performing one type of service communications, or from performing one type of service communications to performing two types of service communications.

[0137] Please refer to Figure 6, which shows a flow chart of a relay communication method provided by another embodiment of the present application. The method may include at least one of the following steps 610 to 620.

[0138] Step 610: The network device sends configuration information to the terminal device, where the configuration information is used to configure relay transmission related to at least two services.

[0139] Correspondingly, the terminal device receives the configuration information sent by the network device.

[0140] In some embodiments, the configuration information is used to configure at least one of the following: relay devices corresponding to different bearers or services; bearers or services corresponding to different relay devices; whether different bearers or services are configured with data replication transmission; whether different bearers or services activate data replication transmission; main paths corresponding to different bearers or services; and the correspondence between services and bearers.

[0141] In some embodiments, for a bearer or service that is not configured with data copy transmission, data copy transmission is not supported; for a bearer or service that is configured with data copy transmission, data copy transmission is supported.

[0142] In some embodiments, for a bearer or service that has data copy transmission configured but not activated, data copy transmission is not supported; for a bearer or service that has data copy transmission configured and activated, data copy transmission is supported.

[0143] In some embodiments, for a bearer or service for which data replication transmission is configured and activated, relay transmission may be performed on different paths, and therefore a primary path corresponding to the bearer or service needs to be configured for the terminal device.

[0144] In some embodiments, a control PDU (Protocol Data Unit) needs to be transmitted on the primary path, and a data PDU can be transmitted on either the primary path or the secondary path. Therefore, it is necessary to configure the primary path corresponding to the bearer or service. There can be one or more data PDUs. For example, there are multiple data PDUs, some of which are transmitted on the secondary path and some on the primary path.

[0145] In some embodiments, different bearers or services may be relayed and transmitted on different links of the same relay device.

[0146] In some embodiments, different bearers or services may also be relayed and transmitted on different links of different relay devices.

[0147] In some embodiments, the relay devices corresponding to different bearers or services include at least one of the following: RLC bearers under the relay devices corresponding to different bearers or services; RLC channels under the relay devices corresponding to different bearers or services; and logical channels under the relay devices corresponding to different bearers or services. For example, the relay devices corresponding to different bearers or services are shown in Table 1.

[0148] Table 1: Relay equipment corresponding to different bearers or services

[0149] Bearer or service Relay device RLC bearer RLC channel Logical channel Bearer 1 (service 1) Relay device 1 RLC bearer 1 RLC channel 1 Logical channel 1 Bearer 2 (service 2) Relay device 2 RLC bearer 2 RLC channel 2 Logical channel 2 ·············· Bearer n (service n) Relay device n RLC bearer n RLC channel n Logical channel n

[0150] In some embodiments, different links of the same relay device may transmit different bearers or different services respectively.

[0151] In some embodiments, the bearers or services corresponding to different relay devices include at least one of the following: bearers or services corresponding to RLC bearers under different relay devices; bearers or services corresponding to RLC channels under different relay devices; and bearers or services corresponding to logical channels under different relay devices. For example, the relay devices corresponding to different bearers or services are shown in Table 2.

[0152] Table 2: Bearers or services corresponding to different relay devices

[0153] Relay device RLC bearer RLC channel logical channel bearer or service Relay device 1 RLC bearer 1 RLC channel 1 logical channel 1 bearer 1 (service 1) Relay device 2 RLC bearer 2 RLC channel 2 logical channel 2 bearer 2 (service 2) ·················Relay device n RLC bearer n RLC channel n logical channel n bearer n (service n)

[0154] In some embodiments, the correspondence between services and bearers includes: one service corresponds to one bearer; or multiple services correspond to one bearer. For example, bearer 1 corresponds to service 1, and bearer 2 corresponds to service 2. For another example, bearer 1 corresponds to services 1, 2, and 3, and bearer 2 corresponds to services 4, 5, and 6.

[0155] In some embodiments, the configuration information is configuration information for an adaptation layer. The adaptation layer refers to some interface types required by various communication devices to implement communication, such as PC5 and Uu.

[0156] In some embodiments, the multiple services include: emergency services and non-emergency services. In some embodiments, the multiple services may also include: voice, traffic, video, etc.

[0157] Step 620: The terminal device relays at least one of the at least two services according to the configuration information.

[0158] In some embodiments, the terminal device relays at least one of the at least two services based on the configuration information for the at least two services included in the configuration information. For example, the configuration information includes configuration information for Service 1, Service 2, Service 3, and Service 4, and the terminal device relays at least one of the aforementioned Services 1, Service 2, Service 3, and Service 4. For example, the terminal device relays Service 1 and Service 3. For another example, the terminal device relays Service 2, Service 3, and Service 4.

[0159] Exemplarily, the network device sends configuration information to the terminal device, where the configuration information is used to indicate logical channels under the relay device corresponding to at least two services. The terminal device then relays at least one of the at least two services according to the instructions of the configuration information.

[0160] The technical solution provided in the embodiment of the present application sends configuration information to the terminal device through the network device, configures the relay transmission related to at least two services, realizes the management of the relay transmission of different services, and improves the reliability of service transmission.

[0161] In addition, in the embodiment of the present application, the terminal device can relay transmission of at least one service based on the configuration information, thereby realizing the management of relay transmission of different services.

[0162] Please refer to Figure 7, which shows a flow chart of a relay communication method provided by another embodiment of the present application. The method may include at least one of the following steps 710 to 750.

[0163] Step 710: When a wireless link failure occurs in the first relay connection used for the first service, the terminal device sends a reporting message to the network device through the second connection used for the second service, and the reporting message is used to indicate that a wireless link failure occurs in the first relay connection; wherein the first service and the second service are different.

[0164] In some embodiments, a wireless link failure occurs in the first relay connection, including at least one of the following: a wireless link failure occurs between the terminal device and the first relay device; the first relay device notifies the terminal device of a wireless link failure between the first relay device and the network device; wherein the first relay device is a relay device used to relay the transmission of the first service.

[0165] The present application does not limit the cause of radio link failure. For example, the radio link failure is caused by suspend.

[0166] In some embodiments, different services include emergency services and non-emergency services. In some embodiments, different services include voice, video, and telephone traffic.

[0167] In some embodiments, the first service is an emergency service and the second service is a non-emergency service; or the first service is a non-emergency service and the second service is an emergency service.

[0168] In some embodiments, the reporting message includes: service information of the first service.

[0169] The present application does not limit the specific content of the service information of the first service. For example, the service information of the first service includes identification information of the first service.

[0170] In some embodiments, the service information of the first service includes at least one of the following: explicit indication information of the service; RSC; upper layer information, which refers to information used by the service layer to distinguish services; and layer 2 ID. The explicit indication information of the service is used to uniquely identify or distinguish different services.

[0171] Step 720: When the first condition is met, the terminal device starts or restarts the first timer.

[0172] The first condition includes: a radio link failure occurs in the first relay connection, or a reporting message is sent to the network device.

[0173] Exemplarily, a radio link failure occurs in the first relay connection, and the terminal device starts or restarts the first timer. Exemplarily, the terminal device sends a reporting message to the network device and starts or restarts the first timer.

[0174] In some embodiments, the first condition further includes at least one of the following: the cell corresponding to the first relay connection is the primary cell of the terminal device; and the cell corresponding to the second connection is not the primary cell of the terminal device.

[0175] Exemplarily, the cell corresponding to the first relay connection is the primary cell of the terminal device, a radio link failure occurs in the first relay connection, and the terminal device starts or restarts the first timer. Exemplarily, the cell corresponding to the second connection is not the primary cell of the terminal device, a radio link failure occurs in the first relay connection, and the terminal device starts or restarts the first timer.

[0176] In some embodiments, the first condition further includes: SRB1 is configured on the second connection; and no radio link failure occurs in the second connection.

[0177] Exemplarily, SRB1 is configured on the second connection, the terminal device sends a reporting message to the network device, and starts or restarts the first timer. Exemplarily, no radio link failure occurs on the second connection, the terminal device sends a reporting message to the network device, and starts or restarts the first timer.

[0178] Step 730: When the first timer times out, the terminal device re-establishes the connection.

[0179] In some embodiments, the terminal device sends a request message for re-establishing a connection to the network device, and the network device re-establishes the connection according to the request message.

[0180] In some embodiments, when the second connection satisfies a second condition, the terminal device re-establishes the connection; wherein the second condition includes at least one of the following: SRB1 is not configured on the second connection; a radio link failure occurs in the second connection.

[0181] Exemplarily, SRB1 is not configured on the second connection, and the terminal device re-establishes the connection. Exemplarily, a radio link failure occurs in the second connection, and the terminal device re-establishes the connection.

[0182] In some embodiments, reestablishing the connection refers to reestablishing the RRC connection.

[0183] In some embodiments, the re-established connection is used to transmit the first service.

[0184] It should be noted that the re-established connection can be the above-mentioned first relay connection or the third connection, and the third connection can be a relay connection or a non-relay connection, which is not limited in this application.

[0185] The above-mentioned second connection can be a relay connection or a non-relay connection, which is not limited in this application.

[0186] Step 740: The network device sends a switching message to the terminal device, where the switching message is used to instruct the terminal device to switch to another connection to transmit the first service.

[0187] Step 750: When the terminal device receives a switching message from the network device, the terminal device stops the first timer.

[0188] In some embodiments, upon receiving a switching message from a network device, the terminal device stops the first timer and initializes the value of the first timer.

[0189] The technical solution provided by the embodiment of the present application is that the terminal device reports problems with the first relay connection to the network device through the second connection, so that the network device can promptly instruct the terminal device to switch to other connections to transmit the first service, thereby ensuring the reliability of relay transmission.

[0190] In addition, the embodiment of the present application uses a first timer to time the time when the problem occurs in the first relay connection, and re-establishes the connection after the timeout. If the second connection does not meet the conditions or there is a problem with the second connection, the connection is directly re-established. If there is a problem with the first relay connection, the first business communication is restored as soon as possible, thereby ensuring the reliability of the relay transmission.

[0191] The following are device embodiments of the present application, which can be used to implement the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

[0192] Please refer to Figure 8, which shows a block diagram of a relay communication device provided by one embodiment of the present application. This device has the function of implementing the above-mentioned relay communication method example. The function can be implemented by hardware or by hardware executing corresponding software. This device can be the terminal device described above, or it can be set in a terminal device. As shown in Figure 8, the device 800 can include: a sending module 810.

[0193] The sending module 810 is configured to send a first message to a first network device, where the first message includes service information supported by at least one relay device.

[0194] In some embodiments, the first message further includes a measurement result corresponding to the at least one relay device, where the measurement result is used to indicate the link quality between the terminal device and the relay device.

[0195] In some embodiments, the sending module 810 is further used to send a second message to the first network device, where the second message is used to instruct the terminal device to start the first service communication and / or end the second service communication.

[0196] In some embodiments, as shown in FIG8 , the apparatus 800 further includes: a receiving module 820 .

[0197] The receiving module 820 is used to receive a third message sent by the first network device, where the third message is used to instruct the terminal device to communicate through the first relay device.

[0198] In some embodiments, the third message includes at least one of the following:

[0199] identification information of the first relay device;

[0200] Service information supported by the first relay device.

[0201] In some embodiments, the receiving module 820 is further configured to receive measurement configuration information from the first network device.

[0202] In some embodiments, as shown in FIG8 , the apparatus 800 further includes a processing module 830 .

[0203] The processing module 830 is used to measure and obtain a measurement result corresponding to the at least one relay device according to the measurement configuration information, where the measurement result is used to indicate the link quality between the terminal device and the relay device.

[0204] In some embodiments, the measurement configuration information includes service information targeted for measurement.

[0205] In some embodiments, the service information includes at least one of the following:

[0206] Explicit indication of the business;

[0207] Relay Service Code RSC;

[0208] Upper layer information, which refers to information used by the service layer to distinguish services;

[0209] Layer 2 ID.

[0210] In some embodiments, the first message is any one of the following:

[0211] Media access layer control unit MAC CE signaling sent by the terminal device to the first network device;

[0212] A radio resource control RRC message sent by the terminal device to the first network device;

[0213] The core network device receives an access layer NAS message from the terminal device and instructs the first network device to send a next generation application protocol NGAP message.

[0214] In some embodiments, the first service is an emergency service;

[0215] or,

[0216] The first service is a non-emergency service.

[0217] Please refer to Figure 9, which shows a block diagram of a relay communication device provided by another embodiment of the present application. This device has the functions of implementing the above-mentioned relay communication method example. The functions can be implemented by hardware or by hardware executing corresponding software. This device can be the network device described above, or it can be installed in a network device. As shown in Figure 9, the device 900 can include: a receiving module 910.

[0218] The receiving module 910 is configured to receive a first message sent by the terminal device, where the first message includes service information supported by at least one relay device.

[0219] In some embodiments, the first message also includes a measurement result corresponding to the at least one relay device, and the measurement result is used to indicate the link quality between the terminal device and the relay device.

[0220] In some embodiments, the receiving module 910 is further configured to receive a second message sent by the terminal device, where the second message is configured to instruct the terminal device to start or end the first service communication.

[0221] In some embodiments, as shown in FIG9 , the apparatus 900 further includes a sending module 920 .

[0222] The sending module 920 is used to send a third message to the terminal device, where the third message is used to instruct the terminal device to communicate through the first relay device.

[0223] In some embodiments, the third message includes at least one of the following:

[0224] identification information of the first relay device;

[0225] Service information supported by the first relay device.

[0226] In some embodiments, the sending module 920 is further configured to send a fourth message to the second network device, the fourth message including at least one of the following: service information of the first service, and service information supported by the at least one relay device;

[0227] In some embodiments, as shown in FIG. 9 , the apparatus 900 further includes a processing module 930 .

[0228] The processing module 930 is configured to determine the first relay device for transmitting the first service based on a negotiation result with the second network device.

[0229] In some embodiments, the sending module 920 is further configured to send measurement configuration information to the terminal device.

[0230] In some embodiments, the measurement configuration information includes service information targeted for measurement.

[0231] In some embodiments, the service information includes at least one of the following:

[0232] Explicit indication of the business;

[0233] Relay Service Code RSC;

[0234] Upper layer information, which refers to information used by the service layer to distinguish services;

[0235] Layer 2 ID.

[0236] In some embodiments, the first message is any one of the following:

[0237] Media access layer control unit MAC CE signaling sent by the terminal device to the first network device;

[0238] A radio resource control RRC message sent by the terminal device to the first network device;

[0239] The core network device receives an access layer NAS message from the terminal device and instructs the first network device to send a next generation application protocol NGAP message.

[0240] In some embodiments, the first service is an emergency service;

[0241] or,

[0242] The first service is a non-emergency service.

[0243] Please refer to Figure 10, which shows a block diagram of a relay communication device provided by another embodiment of the present application. This device has the function of implementing the above-mentioned relay communication method example. The function can be implemented by hardware or by hardware executing corresponding software. The device can be the terminal device described above, or it can be set in a terminal device. As shown in Figure 10, the device 1000 may include: a receiving module 1010 and a processing module 1020.

[0244] The receiving module 1010 is configured to receive configuration information sent by a network device, where the configuration information is used to configure relay transmission related to at least two services.

[0245] The processing module 1020 is configured to relay and transmit at least one of the at least two services according to the configuration information.

[0246] In some embodiments, the configuration information is used to configure at least one of the following:

[0247] Relay equipment corresponding to different bearers or services;

[0248] The bearers or services corresponding to different relay devices;

[0249] Whether data replication and transmission are configured for different bearers or services;

[0250] Whether data replication and transmission are activated for different bearers or services;

[0251] Primary paths corresponding to different bearers or services;

[0252] The correspondence between the services and the bearers.

[0253] In some embodiments, the relay devices corresponding to the different bearers or services include at least one of the following:

[0254] Radio link control (RLC) bearers under relay devices corresponding to different bearers or services;

[0255] RLC channels under relay equipment corresponding to different bearers or services;

[0256] Logical channels under relay equipment corresponding to different bearers or services.

[0257] In some embodiments, the bearers or services corresponding to the different relay devices include at least one of the following:

[0258] RLC bearers under different relay devices correspond to bearers or services;

[0259] The bearers or services corresponding to the RLC channels under different relay devices;

[0260] The bearers or services corresponding to the logical channels under different relay devices.

[0261] In some embodiments, the correspondence between the service and the bearer includes:

[0262] One service corresponds to one bearer;

[0263] or,

[0264] Multiple services correspond to one bearer.

[0265] In some embodiments, the configuration information is configuration information for an adaptation layer.

[0266] In some embodiments, the multiple services include: emergency services and non-emergency services.

[0267] Please refer to Figure 11, which shows a block diagram of a relay communication device provided by another embodiment of the present application. This device has the function of implementing the above-mentioned relay communication method example. The function can be implemented by hardware or by hardware executing corresponding software. The device can be the network device described above, or it can be set in a network device. As shown in Figure 11, the device 1100 can include: a sending module 1110.

[0268] The sending module 1110 is used to send configuration information to the terminal device, where the configuration information is used to configure relay transmission related to at least two services.

[0269] In some embodiments, the configuration information is used to configure at least one of the following:

[0270] Relay equipment corresponding to different bearers or services;

[0271] The bearers or services corresponding to different relay devices;

[0272] Whether data replication and transmission are configured for different bearers or services;

[0273] Whether data replication and transmission are activated for different bearers or services;

[0274] Primary paths corresponding to different bearers or services;

[0275] The correspondence between the services and the bearers.

[0276] In some embodiments, the relay devices corresponding to the different bearers or services include at least one of the following:

[0277] Radio link control (RLC) bearers under relay devices corresponding to different bearers or services;

[0278] RLC channels under relay equipment corresponding to different bearers or services;

[0279] Logical channels under relay equipment corresponding to different bearers or services.

[0280] In some embodiments, the bearers or services corresponding to the different relay devices include at least one of the following:

[0281] RLC bearers under different relay devices correspond to bearers or services;

[0282] The bearers or services corresponding to the RLC channels under different relay devices;

[0283] The bearers or services corresponding to the logical channels under different relay devices.

[0284] In some embodiments, the correspondence between the service and the bearer includes:

[0285] One service corresponds to one bearer;

[0286] or,

[0287] Multiple services correspond to one bearer.

[0288] In some embodiments, the configuration information is configuration information for an adaptation layer.

[0289] In some embodiments, the multiple services include: emergency services and non-emergency services.

[0290] Please refer to Figure 12, which shows a block diagram of a relay communication device provided by another embodiment of the present application. This device has the functions of implementing the above-mentioned relay communication method example. The functions can be implemented by hardware or by hardware executing corresponding software. This device can be the terminal device described above, or it can be provided in a terminal device. As shown in Figure 12, the device 1200 can include: a sending module 1210.

[0291] The sending module 1210 is used to send a reporting message to the network device through the second connection used for the second service when a wireless link failure occurs in the first relay connection used for the first service, and the reporting message is used to indicate that a wireless link failure occurs in the first relay connection; wherein the first service and the second service are different.

[0292] In some embodiments, the reporting message includes: service information of the first service.

[0293] In some embodiments, the service information includes at least one of the following:

[0294] Explicit indication of the business;

[0295] Relay Service Code RSC;

[0296] Upper layer information, which refers to information used by the service layer to distinguish services;

[0297] Layer 2 ID.

[0298] In some embodiments, when a radio link failure occurs in the first relay connection or the reporting message is sent to the network device, the apparatus further includes a processing module 1220 .

[0299] The processing module 1220 is used to start or restart the first timer when the first condition is met; wherein the first condition includes: a wireless link failure occurs in the first relay connection, or the reporting message is sent to the network device; when the first timer times out, the connection is re-established.

[0300] In some embodiments, the first condition further includes at least one of the following:

[0301] The cell corresponding to the first relay connection is the primary cell of the terminal device;

[0302] The cell corresponding to the second connection is not the primary cell of the terminal device.

[0303] In some embodiments, the processing module 1220 is further configured to stop the first timer upon receiving a switching message from the network device; wherein the switching message is used to indicate switching to another connection to transmit the first service.

[0304] In some embodiments, when a radio link failure occurs in the first relay connection, the processing module 1220 is further configured to re-establish a connection if the second connection satisfies a second condition;

[0305] The second condition includes at least one of the following:

[0306] No signaling radio bearer SRB1 is configured on the second connection;

[0307] A wireless link failure occurs in the second connection.

[0308] In some embodiments, the wireless link failure of the first relay connection includes at least one of the following:

[0309] A wireless link failure occurs between the terminal device and the first relay device;

[0310] The first relay device notifies the terminal device that a wireless link failure occurs between the first relay device and the network device;

[0311] The first relay device is a relay device used to relay and transmit the first service.

[0312] In some embodiments, the first service is an emergency service and the second service is a non-emergency service;

[0313] or,

[0314] The first service is a non-emergency service, and the second service is an emergency service.

[0315] Please refer to Figure 13, which shows a block diagram of a relay communication device provided by another embodiment of the present application. This device has the functions of implementing the above-mentioned relay communication method example. The functions can be implemented by hardware or by hardware executing corresponding software. This device can be the network device described above, or it can be set in a network device. As shown in Figure 13, the device 1300 can include: a receiving module 1310.

[0316] The receiving module 1310 is used to receive a reporting message sent by a terminal device through a second connection for a second service, where the reporting message indicates that a radio link failure occurs in a first relay connection for a first service; wherein the first service and the second service are different.

[0317] In some embodiments, the reporting message includes: service information of the first service.

[0318] In some embodiments, the service information includes at least one of the following:

[0319] Explicit indication of the business;

[0320] Relay Service Code RSC;

[0321] Upper layer information, which refers to information used by the service layer to distinguish services;

[0322] Layer 2 ID.

[0323] In some embodiments, as shown in FIG13 , the apparatus 1300 further includes a sending module 1320 .

[0324] The sending module 1320 is used to send a switching message to the terminal device, where the switching message is used to indicate switching to another connection to transmit the first service.

[0325] In some embodiments, the receiving module 1310 is further configured to receive a request message initiated by the terminal device for re-establishing a connection;

[0326] In some embodiments, as shown in FIG. 13 , the apparatus 1300 further includes a processing module 1330 .

[0327] The processing module 1330 is configured to re-establish a connection according to the request message.

[0328] In some embodiments, the wireless link failure of the first relay connection includes at least one of the following:

[0329] A wireless link failure occurs between the terminal device and the first relay device;

[0330] A wireless link failure occurs between the first relay device and the network device;

[0331] The first relay device is a relay device used to relay and transmit the first service.

[0332] In some embodiments, the first service is an emergency service and the second service is a non-emergency service;

[0333] or,

[0334] The first service is a non-emergency service, and the second service is an emergency service.

[0335] It should be noted that the device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example to implement its functions. In actual applications, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0336] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0337] Please refer to Figure 14, which shows a schematic diagram of the structure of a terminal device provided by one embodiment of the present application. The terminal device 1400 may include: a processor 1401, a transceiver 1402, and a memory 1403. The processor 1401 is configured to implement the functions of the processing modules 830, 1020, and 1230 described above, and the transceiver 1402 is configured to implement the functions of the sending modules 810, 1210, and / or the receiving modules 820 and 1010 described above.

[0338] The processor 1401 includes one or more processing cores, and executes various functional applications and information processing by running software programs and modules. The processor 1401 is used to execute other steps except the sending and receiving steps executed by the terminal device in the above method embodiment.

[0339] Transceiver 1402 may include a receiver and a transmitter. For example, the receiver and transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna. Transceiver 1402 is configured to perform the sending and / or receiving steps performed by the terminal device in the above method embodiment.

[0340] The memory 1403 may be connected to the processor 1401 and the transceiver 1402 .

[0341] The memory 1403 may be used to store a computer program executed by the processor, and the processor 1401 is used to execute the computer program to implement each step in the above method embodiment.

[0342] In addition, the memory can be implemented by any volatile or non-volatile storage device or a combination thereof, and the volatile or non-volatile storage device includes but is not limited to: a magnetic disk or optical disk, an electrically erasable programmable read-only memory, an erasable programmable read-only memory, a static access memory, a read-only memory, a magnetic memory, a flash memory, and a programmable read-only memory.

[0343] In an exemplary embodiment, the transceiver 1403 is configured to send a first message to the first network device, where the first message includes service information supported by at least one relay device.

[0344] In another exemplary embodiment, the transceiver 1403 is configured to receive configuration information sent by a network device, where the configuration information is used to configure relay transmission related to at least two services.

[0345] In another exemplary embodiment, the transceiver 1403 is used to send a reporting message to the network device through the second connection for the second service when a wireless link failure occurs in the first relay connection for the first service, and the reporting message is used to indicate that a wireless link failure occurs in the first relay connection; wherein the first service and the second service are different.

[0346] For details not described in detail in this embodiment, please refer to the above embodiments and will not be described in detail here.

[0347] Please refer to Figure 15, which shows a schematic diagram of the structure of a network device provided in one embodiment of the present application. This network device 1500 can be used to execute the method steps performed by the network device in the above embodiments. Specifically, the processor 1501 is used to implement the functions of the processing module 930 and the processing module 1330, and the transceiver 1502 is used to implement the functions of the sending module 920, the sending module 1110, the sending module 1320, and / or the receiving module 910 and the receiving module 1310.

[0348] The processor 1501 includes one or more processing cores, and executes various functional applications and information processing by running software programs and modules. The processor 1501 is used to execute other steps except the receiving and sending steps executed by the network device in the above method embodiment.

[0349] Transceiver 1502 may include a receiver and a transmitter. For example, transceiver 1502 may include a wired communication component, which may include a wired communication chip and a wired interface (such as a fiber optic interface). Optionally, transceiver 1502 may also include a wireless communication component, which may include a wireless communication chip and a radio frequency antenna. Transceiver 1502 is configured to perform the receiving and / or transmitting steps performed by the network device in the above method embodiment.

[0350] The memory 1503 may be connected to the processor 1501 and the transceiver 1502 .

[0351] The memory 1503 may be used to store a computer program executed by the processor, and the processor 1501 is used to execute the computer program to implement each step performed by the network device in the above method embodiment.

[0352] In addition, the memory 1503 can be implemented by any volatile or non-volatile storage device or a combination thereof, and the volatile or non-volatile storage device includes but is not limited to: a magnetic disk or an optical disk, an electrically erasable programmable read-only memory, an erasable programmable read-only memory, a static access memory, a read-only memory, a magnetic memory, a flash memory, and a programmable read-only memory.

[0353] In an exemplary embodiment, the transceiver 1503 is configured to receive a first message sent by a terminal device, where the first message includes information about services supported by at least one relay device.

[0354] In another exemplary embodiment, the transceiver 1503 is configured to send configuration information to the terminal device, where the configuration information is used to configure relay transmission related to at least two services.

[0355] In another exemplary embodiment, the transceiver 1503 is used to receive a reporting message sent by a terminal device through a second connection for a second service, wherein the reporting message indicates that a wireless link failure occurs in a first relay connection for a first service; wherein the first service and the second service are different.

[0356] For details not described in detail in this embodiment, please refer to the above embodiments and will not be described in detail here.

[0357] An embodiment of the present application also provides a computer-readable storage medium, in which a computer program is stored, and the computer program is used to be executed by a processor to implement any of the above-mentioned relay communication methods. Optionally, the computer-readable storage medium may include: ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives) or an optical disk, etc. Among them, the random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0358] An embodiment of the present application also provides a chip, which includes a programmable logic circuit and / or program instructions, and when the chip is running, is used to implement any of the above-mentioned relay communication methods.

[0359] An embodiment of the present application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. A processor reads and executes the computer program from the computer-readable storage medium to implement any of the above-mentioned relay communication methods.

[0360] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0361] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0362] In this document, "plurality" refers to two or more. "And / or" describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates an "or" relationship between the associated objects.

[0363] The term “greater than or equal to” mentioned herein may mean greater than or equal to, or greater than, and the term “less than or equal to” may mean less than or equal to, or less than.

[0364] In addition, the step numbers described in this document only illustrate a possible execution order between the steps. In some other embodiments, the above steps may not be executed in the order of the numbers, such as two steps with different numbers are executed at the same time, or two steps with different numbers are executed in the opposite order of the diagram. The embodiments of the present application are not limited to this.

[0365] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0366] The above description is merely an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A relay communication method, characterized in that: The method is executed by a terminal device, and includes: A first message is sent to a first network device, where the first message includes service information supported by at least one relay device.

2. The method according to claim 1, characterized in that The first message also includes a measurement result corresponding to the at least one relay device, where the measurement result is used to indicate the link quality between the terminal device and the relay device.

3. The method according to claim 1 or 2, characterized in that The method further comprises: A second message is sent to the first network device, where the second message is used to instruct the terminal device to start a first service communication and / or end a second service communication.

4. The method according to any one of claims 1 to 3, characterized in that After sending the first message to the first network device, the method further includes: Receive a third message sent by the first network device, where the third message is used to instruct the terminal device to communicate through the first relay device.

5. The method according to claim 4, characterized in that The third message includes at least one of the following: identification information of the first relay device; Service information supported by the first relay device.

6. The method according to any one of claims 1 to 5, characterized in that The method further comprises: receiving measurement configuration information from the first network device; According to the measurement configuration information, a measurement result corresponding to the at least one relay device is measured and obtained, where the measurement result is used to indicate the link quality between the terminal device and the relay device.

7. The method according to claim 6, characterized in that The measurement configuration information includes service information targeted for measurement.

8. The method according to any one of claims 1 to 7, characterized in that The business information includes at least one of the following: Explicit indication of the business; Relay Service Code RSC; Upper layer information, which refers to information used by the service layer to distinguish services; Layer 2 ID.

9. The method according to any one of claims 1 to 8, characterized in that The first message is any one of the following: Media access layer control unit MAC CE signaling sent by the terminal device to the first network device; A radio resource control RRC message sent by the terminal device to the first network device; The core network device receives an access layer NAS message from the terminal device and instructs the first network device to send a next generation application protocol NGAP message.

10. The method according to claim 3, characterized in that The first service is an emergency service; or the first service is a non-emergency service.

11. A relay communication method, characterized in that: The method is performed by a first network device, and the method includes: A first message sent by a terminal device is received, where the first message includes service information supported by at least one relay device.

12. The method according to claim 11, characterized in that The first message also includes a measurement result corresponding to the at least one relay device, where the measurement result is used to indicate the link quality between the terminal device and the relay device.

13. The method according to claim 11 or 12, characterized in that The method further comprises: A second message sent by the terminal device is received, where the second message is used to instruct the terminal device to start a first service system and / or end a second service communication.

14. The method according to any one of claims 11 to 13, characterized in that After receiving the first message sent by the terminal device, the method further includes: A third message is sent to the terminal device, where the third message is used to instruct the terminal device to communicate through the first relay device.

15. The method according to claim 14, characterized in that The third message includes at least one of the following: identification information of the first relay device; Service information supported by the first relay device.

16. The method according to claim 14 or 15, characterized in that Before sending the third message to the terminal device, the method further includes: Sending a fourth message to the second network device, where the fourth message includes at least one of the following: service information of the first service and service information supported by the at least one relay device; Based on the negotiation result with the second network device, the first relay device for transmitting the first service is determined.

17. The method according to any one of claims 11 to 16, characterized in that The method further comprises: Send measurement configuration information to the terminal device.

18. The method according to claim 17, characterized in that The measurement configuration information includes service information targeted for measurement.

19. The method according to any one of claims 11 to 18, characterized in that The business information includes at least one of the following: Explicit indication of the business; Relay Service Code RSC; Upper layer information, which refers to information used by the service layer to distinguish services; Layer 2 ID.

20. The method according to any one of claims 11 to 19, characterized in that The first message is any one of the following: Media access layer control unit MAC CE signaling sent by the terminal device to the first network device; A radio resource control RRC message sent by the terminal device to the first network device; The core network device receives a non-access layer NAS message from the terminal device and instructs the first network device to send a next generation application protocol NGAP message.

21. The method according to claim 13 or 16, characterized in that The first service is an emergency service; or the first service is a non-emergency service.

22. A relay communication method, characterized in that: The method is executed by a terminal device, and includes: receiving configuration information sent by a network device, where the configuration information is used to configure relay transmission related to at least two services; Relay transmission is performed on at least one of the at least two services according to the configuration information.

23. The method according to claim 22, characterized in that The configuration information is used to configure at least one of the following: Relay equipment corresponding to different bearers or services; The bearers or services corresponding to different relay devices; Whether data replication and transmission are configured for different bearers or services; Whether data replication and transmission are activated for different bearers or services; Primary paths corresponding to different bearers or services; The correspondence between the services and the bearers.

24. The method according to claim 23, wherein The relay devices corresponding to the different bearers or services include at least one of the following: Radio link control (RLC) bearers under relay devices corresponding to different bearers or services; RLC channels under relay equipment corresponding to different bearers or services; Logical channels under relay equipment corresponding to different bearers or services.

25. The method according to claim 23 or 24, characterized in that The bearers or services corresponding to the different relay devices include at least one of the following: RLC bearers under different relay devices bear corresponding bearers or services; The bearers or services corresponding to the RLC channels under different relay devices; The bearers or services corresponding to the logical channels under different relay devices.

26. The method according to any one of claims 23 to 25, characterized in that The correspondence between the service and the bearer includes: One service corresponds to one bearer; or, Multiple services correspond to one bearer.

27. The method according to any one of claims 22 to 26, characterized in that The configuration information is configuration information for the adaptation layer.

28. The method according to any one of claims 22 to 25, characterized in that The multiple services include: emergency services and non-emergency services.

29. A relay communication method, characterized in that: The method is performed by a network device, and includes: Configuration information is sent to a terminal device, where the configuration information is used to configure relay transmission related to at least two services.

30. The method according to claim 29, wherein The configuration information is used to configure at least one of the following: Relay equipment corresponding to different bearers or services; The bearers or services corresponding to different relay devices; Whether data replication and transmission are configured for different bearers or services; Whether data replication and transmission are activated for different bearers or services; Primary paths corresponding to different bearers or services; The correspondence between the services and the bearers.

31. The method according to claim 30, wherein The relay devices corresponding to the different bearers or services include at least one of the following: Radio link control (RLC) bearers under relay devices corresponding to different bearers or services; RLC channels under relay equipment corresponding to different bearers or services; Logical channels under relay equipment corresponding to different bearers or services.

32. The method according to claim 30 or 31, characterized in that The bearers or services corresponding to the different relay devices include at least one of the following: RLC bearers under different relay devices bear corresponding bearers or services; The bearers or services corresponding to the RLC channels under different relay devices; The bearers or services corresponding to the logical channels under different relay devices.

33. The method according to any one of claims 30 to 32, characterized in that The correspondence between the service and the bearer includes: One service corresponds to one bearer; or, Multiple services correspond to one bearer.

34. The method according to any one of claims 29 to 33, characterized in that The configuration information is configuration information for the adaptation layer.

35. The method according to any one of claims 29 to 34, characterized in that The multiple services include: emergency services and non-emergency services.

36. A relay communication method, characterized in that: The method is executed by a terminal device, and includes: In the event of a radio link failure in a first relay connection used for a first service, a reporting message is sent to a network device via a second connection used for a second service, wherein the reporting message is used to indicate that a radio link failure has occurred in the first relay connection; wherein the first service and the second service are different.

37. The method according to claim 36, wherein The reporting message includes: service information of the first service.

38. The method according to claim 37, wherein The business information includes at least one of the following: Explicit indication of the business; Relay Service Code RSC; Upper layer information, which refers to information used by the service layer to distinguish services; Layer 2 ID.

39. The method according to any one of claims 36 to 38, characterized in that In the case where a radio link failure occurs in the first relay connection or the reporting message is sent to the network device, the method further includes: When a first condition is met, starting or restarting a first timer; wherein the first condition includes: a radio link failure occurs in the first relay connection, or sending the report message to the network device; When the first timer times out, the connection is re-established.

40. The method according to claim 39, wherein The first condition also includes at least one of the following: The cell corresponding to the first relay connection is the primary cell of the terminal device; The cell corresponding to the second connection is not the primary cell of the terminal device.

41. The method according to claim 39 or 40, characterized in that After starting or restarting the first timer, the method further includes: When a switching message is received from the network device, the first timer is stopped; wherein the switching message is used to instruct switching to another connection to transmit the first service.

42. The method according to any one of claims 36 to 41, characterized in that In the event that a radio link failure occurs in the first relay connection, the method further includes: reestablishing the connection when the second connection satisfies the second condition; The second condition includes at least one of the following: No signaling radio bearer SRB1 is configured on the second connection; A wireless link failure occurs in the second connection.

43. The method according to any one of claims 36 to 42, characterized in that The wireless link failure of the first relay connection includes at least one of the following: A wireless link failure occurs between the terminal device and the first relay device; The first relay device notifies the terminal device that a wireless link failure occurs between the first relay device and the network device; The first relay device is a relay device used to relay and transmit the first service.

44. The method according to any one of claims 36 to 43, characterized in that The first service is an emergency service, and the second service is a non-emergency service; or, The first service is a non-emergency service, and the second service is an emergency service.

45. A relay communication method, characterized in that: The method is performed by a network device, and includes: A reporting message is received from a terminal device via a second connection for a second service, where the reporting message indicates that a radio link failure occurs in a first relay connection for a first service; wherein the first service and the second service are different.

46. ​​The method according to claim 45, characterized in that The reporting message includes: service information of the first service.

47. The method according to claim 46, wherein The business information includes at least one of the following: Explicit indication of the business; Relay Service Code RSC; Upper layer information, which refers to information used by the service layer to distinguish services; Layer 2 ID.

48. The method according to any one of claims 45 to 47, characterized in that After receiving the report message sent by the terminal device through the second connection for the second service, the method further includes: A switching message is sent to the terminal device, where the switching message is used to indicate switching to another connection to transmit the first service.

49. The method according to any one of claims 45 to 48, characterized in that After receiving the report message sent by the terminal device through the second connection for the second service, the method further includes: receiving a request message initiated by the terminal device for re-establishing a connection; Re-establish the connection according to the request message.

50. The method according to any one of claims 45 to 49, characterized in that The wireless link failure of the first relay connection includes at least one of the following: A wireless link failure occurs between the terminal device and the first relay device; The first relay device notifies the terminal device that a wireless link failure occurs between the first relay device and the network device; The first relay device is a relay device used to relay and transmit the first service.

51. The method according to any one of claims 45 to 50, characterized in that The first service is an emergency service, and the second service is a non-emergency service; or, The first service is a non-emergency service, and the second service is an emergency service.

52. A relay communication device, characterized in that: The device comprises: The sending module is configured to send a first message to a first network device, where the first message includes service information supported by at least one relay device.

53. The device according to claim 52, characterized in that The first message also includes a measurement result corresponding to the at least one relay device, where the measurement result is used to indicate the link quality between the terminal device and the relay device.

54. The device according to claim 52 or 53, characterized in that The sending module is further used to send a second message to the first network device, where the second message is used to instruct the terminal device to start the first service communication and / or end the second service communication.

55. The device according to any one of claims 52 to 54, characterized in that The device further comprises: A receiving module is used to receive a third message sent by the first network device, where the third message is used to instruct the terminal device to communicate through the first relay device.

56. The device according to claim 55, characterized in that The third message includes at least one of the following: identification information of the first relay device; Service information supported by the first relay device.

57. The device according to any one of claims 52 to 56, characterized in that The receiving module is further configured to receive measurement configuration information from the first network device; A processing module is used to measure and obtain a measurement result corresponding to the at least one relay device according to the measurement configuration information, where the measurement result is used to indicate the link quality between the terminal device and the relay device.

58. The device according to claim 57, characterized in that The measurement configuration information includes service information targeted for measurement.

59. The device according to any one of claims 52 to 58, characterized in that The business information includes at least one of the following: Explicit indication of the business; Relay Service Code RSC; Upper layer information, which refers to information used by the service layer to distinguish services; Layer 2 ID.

60. The device according to any one of claims 52 to 59, characterized in that The first message is any one of the following: Media access layer control unit MAC CE signaling sent by the terminal device to the first network device; A radio resource control RRC message sent by the terminal device to the first network device; The core network device receives an access layer NAS message from the terminal device and instructs the first network device to send a next generation application protocol NGAP message.

61. The device according to claim 55, characterized in that The first service is an emergency service; or, The first service is a non-emergency service.

62. A relay communication device, characterized in that: The device comprises: The receiving module is used to receive a first message sent by a terminal device, where the first message includes service information supported by at least one relay device.

63. The device according to claim 62, characterized in that The first message also includes a measurement result corresponding to the at least one relay device, where the measurement result is used to indicate the link quality between the terminal device and the relay device.

64. The device according to claim 62 or 63, characterized in that The receiving module is further configured to receive a second message sent by the terminal device, where the second message is configured to instruct the terminal device to start a first service communication and / or end a second service communication.

65. The device according to any one of claims 62 to 64, characterized in that The device further comprises: A sending module is used to send a third message to the terminal device, where the third message is used to instruct the terminal device to communicate through the first relay device.

66. The device according to claim 65, characterized in that The third message includes at least one of the following: identification information of the first relay device; Service information supported by the first relay device.

67. The device according to claim 65 or 66, characterized in that The sending module is further configured to send a fourth message to the second network device, wherein the fourth message includes at least one of the following: service information of the first service and service information supported by the at least one relay device; A processing module is used to determine the first relay device for transmitting the first service based on the negotiation result with the second network device.

68. The device according to any one of claims 62 to 67, characterized in that The sending module is further configured to send measurement configuration information to the terminal device.

69. The device according to claim 68, characterized in that The measurement configuration information includes service information targeted for measurement.

70. The device according to any one of claims 62 to 69, characterized in that The business information includes at least one of the following: Explicit indication of the business; Relay Service Code RSC; Upper layer information, which refers to information used by the service layer to distinguish services; Layer 2 ID.

71. The device according to any one of claims 62 to 70, characterized in that The first message is any one of the following: Media access layer control unit MAC CE signaling sent by the terminal device to the first network device; A radio resource control RRC message sent by the terminal device to the first network device; The core network device receives an access layer NAS message from the terminal device and instructs the first network device to send a next generation application protocol NGAP message.

72. The device according to claim 64 or 67, characterized in that The first service is an emergency service; or, The first service is a non-emergency service.

73. A relay communication device, characterized in that The device comprises: A receiving module, configured to receive configuration information sent by a network device, wherein the configuration information is used to configure relay transmission related to at least two services; A processing module is used to relay and transmit at least one of the at least two services according to the configuration information.

74. The device according to claim 73, characterized in that The configuration information is used to configure at least one of the following: Relay equipment corresponding to different bearers or services; The bearers or services corresponding to different relay devices; Whether data replication and transmission are configured for different bearers or services; Whether data replication and transmission are activated for different bearers or services; Primary paths corresponding to different bearers or services; The correspondence between the services and the bearers.

75. The device according to claim 74, characterized in that The relay devices corresponding to the different bearers or services include at least one of the following: Radio link control (RLC) bearers under relay devices corresponding to different bearers or services; RLC channels under relay equipment corresponding to different bearers or services; Logical channels under relay equipment corresponding to different bearers or services.

76. The device according to claim 74 or 75, characterized in that The bearers or services corresponding to the different relay devices include at least one of the following: RLC bearers under different relay devices bear corresponding bearers or services; The bearers or services corresponding to the RLC channels under different relay devices; The bearers or services corresponding to the logical channels under different relay devices.

77. The device according to any one of claims 74 to 76, characterized in that The correspondence between the service and the bearer includes: One service corresponds to one bearer; or, Multiple services correspond to one bearer.

78. The device according to any one of claims 73 to 77, characterized in that The configuration information is configuration information for the adaptation layer.

79. The device according to any one of claims 73 to 76, characterized in that The multiple services include: emergency services and non-emergency services.

80. A relay communication device, characterized in that: The device comprises: The sending module is used to send configuration information to the terminal device, where the configuration information is used to configure relay transmission related to at least two services.

81. The device according to claim 80, characterized in that The configuration information is used to configure at least one of the following: Relay equipment corresponding to different bearers or services; The bearers or services corresponding to different relay devices; Whether data replication and transmission are configured for different bearers or services; Whether data replication and transmission are activated for different bearers or services; Primary paths corresponding to different bearers or services; The correspondence between the services and the bearers.

82. The device according to claim 81, characterized in that The relay devices corresponding to the different bearers or services include at least one of the following: Radio link control (RLC) bearers under relay devices corresponding to different bearers or services; RLC channels under relay equipment corresponding to different bearers or services; Logical channels under relay equipment corresponding to different bearers or services.

83. The device according to claim 81 or 82, characterized in that The bearers or services corresponding to the different relay devices include at least one of the following: RLC bearers under different relay devices bear corresponding bearers or services; The bearers or services corresponding to the RLC channels under different relay devices; The bearers or services corresponding to the logical channels under different relay devices.

84. The device according to any one of claims 81 to 83, characterized in that The correspondence between the service and the bearer includes: One service corresponds to one bearer; or, Multiple services correspond to one bearer.

85. The device according to any one of claims 80 to 84, characterized in that The configuration information is configuration information for the adaptation layer.

86. The device according to any one of claims 80 to 85, characterized in that The multiple services include: emergency services and non-emergency services.

87. A relay communication device, characterized in that The device comprises: A sending module is used to send a reporting message to a network device through a second connection for a second service when a wireless link failure occurs in a first relay connection for a first service, wherein the reporting message is used to indicate that a wireless link failure occurs in the first relay connection; wherein the first service and the second service are different.

88. The device according to claim 87, characterized in that The reporting message includes: service information of the first service.

89. The device according to claim 88, characterized in that The business information includes at least one of the following: Explicit indication of the business; Relay Service Code RSC; Upper layer information, which refers to information used by the service layer to distinguish services; Layer 2 ID.

90. The device according to any one of claims 87 to 89, characterized in that In the case where a radio link failure occurs in the first relay connection or the reporting message is sent to the network device, the apparatus further includes: A processing module is used to start or restart a first timer when a first condition is met; wherein the first condition includes: a wireless link failure occurs in the first relay connection, or the reporting message is sent to the network device; when the first timer times out, the connection is re-established.

91. The device according to claim 90, characterized in that The first condition also includes at least one of the following: The cell corresponding to the first relay connection is a primary cell of the terminal device; The cell corresponding to the second connection is not the primary cell of the terminal device.

92. The device according to claim 90 or 91, characterized in that The processing module is further configured to stop the first timer upon receiving a switching message from the network device; wherein the switching message is used to instruct switching to another connection to transmit the first service.

93. The device according to any one of claims 87 to 92, characterized in that In the event that a radio link failure occurs in the first relay connection, the processing module is further configured to re-establish a connection if the second connection satisfies a second condition; The second condition includes at least one of the following: No signaling radio bearer SRB1 is configured on the second connection; A wireless link failure occurs in the second connection.

94. The device according to any one of claims 87 to 93, characterized in that The wireless link failure of the first relay connection includes at least one of the following: A wireless link failure occurs between the terminal device and the first relay device; The first relay device notifies the terminal device that a wireless link failure occurs between the first relay device and the network device; The first relay device is a relay device used to relay and transmit the first service.

95. The device according to any one of claims 87 to 94, characterized in that The first service is an emergency service, and the second service is a non-emergency service; or, The first service is a non-emergency service, and the second service is an emergency service.

96. A relay communication device, characterized in that The device comprises: A receiving module is used to receive a reporting message sent by a terminal device through a second connection used for a second service, wherein the reporting message indicates that a radio link failure occurs in a first relay connection used for a first service; wherein the first service and the second service are different.

97. The device according to claim 96, characterized in that The reporting message includes: service information of the first service.

98. The device according to claim 97, characterized in that The business information includes at least one of the following: Explicit indication of the business; Relay Service Code RSC; Upper layer information, which refers to information used by the service layer to distinguish services; Layer 2 ID.

99. The device according to any one of claims 96 to 98, characterized in that The device further comprises: A sending module is used to send a switching message to the terminal device, where the switching message is used to indicate switching to other connections to transmit the first service.

100. The device according to any one of claims 96 to 99, characterized in that The receiving module is further configured to receive a request message initiated by the terminal device for re-establishing a connection; A processing module is used to re-establish the connection according to the request message.

101. The device according to any one of claims 96 to 100, characterized in that The wireless link failure of the first relay connection includes at least one of the following: A wireless link failure occurs between the terminal device and the first relay device; A wireless link failure occurs between the first relay device and the network device; The first relay device is a relay device used to relay and transmit the first service.

102. The device according to any one of claims 96 to 101, characterized in that The first service is an emergency service, and the second service is a non-emergency service; or, The first service is a non-emergency service, and the second service is an emergency service.

103. A communication device, characterized in that The communication device includes a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program to implement the method according to any one of claims 1 to 10, or the method according to any one of claims 11 to 21, or the method according to any one of claims 22 to 28, or the method according to any one of claims 29 to 35, or the method according to any one of claims 36 to 44, or the method according to any one of claims 45 to 51.

104. A computer-readable storage medium, characterized in that The storage medium stores a computer program, which is used to be executed by a processor to implement the method according to any one of claims 1 to 10, or the method according to any one of claims 11 to 21, or the method according to any one of claims 22 to 28, or the method according to any one of claims 29 to 35, or the method according to any one of claims 36 to 44, or the method according to any one of claims 45 to 51.

105. A chip, characterized in that: The chip includes programmable logic circuits and / or program instructions, which, when the chip is running, are used to implement the method according to any one of claims 1 to 10, or to implement the method according to any one of claims 11 to 21, or to implement the method according to any one of claims 22 to 28, or to implement the method according to any one of claims 29 to 35, or to implement the method according to any one of claims 36 to 44, or to implement the method according to any one of claims 45 to 51.

106. A computer program product, characterized in that The computer program product includes a computer program, which is stored in a computer-readable storage medium. The processor reads and executes the computer program from the computer-readable storage medium to implement the method according to any one of claims 1 to 10, or implements the method according to any one of claims 11 to 21, or implements the method according to any one of claims 22 to 28, or implements the method according to any one of claims 29 to 35, or implements the method according to any one of claims 36 to 44, or implements the method according to any one of claims 45 to 51.

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