Relay communication method and device

Abstract

The present application relates to a relay communication method and a device. The method comprises: a first terminal acquires segmentation information of quality of service (QoS) information of a multi-hop relay link. In embodiments of the present application, on the basis of the segmentation information of the QoS information of the multi-hop relay link, more appropriate QoS information can be segmented for one-hop or multi-hop in the multi-hop relay link.

Description

Relay communication method and device Technical Field

[0001] The present application relates to the field of communications, and more specifically, to a relay communication method and device. Background Art

[0002] With the development of wireless communication technology, the 3rd Generation Partnership Project (3GPP) introduced relays. Remote terminals can connect to the network through relays, such as user equipment (UE) to network (U2N) relays. Source and target terminals can also connect through relays, such as user equipment to user equipment (UE to UE, U2U) relays. Communication based on relays can extend communication distances and improve communication reliability. Quality of Service (QoS) parameters must be considered in relay scenarios.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide a relay communication method and device, which can improve communication reliability and communication range.

[0005] The present invention provides a relay communication method, including:

[0006] The first terminal obtains segmentation information of QoS information of the multi-hop relay link.

[0007] The present invention provides a relay communication method, including:

[0008] The network device obtains the QoS information segmentation information of the multi-hop relay link.

[0009] An embodiment of the present application provides a first terminal, including:

[0010] The acquiring unit is used to acquire the segmentation information of the QoS information of the multi-hop relay link.

[0011] An embodiment of the present application provides a network device, including:

[0012] The acquiring unit is used to acquire the segmentation information of the QoS information of the multi-hop relay link.

[0013] An embodiment of the present application provides a terminal device, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the above-mentioned relay communication method.

[0014] An embodiment of the present application provides a network device, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the network device executes the above-mentioned relay communication method.

[0015] An embodiment of the present application provides a chip for implementing the above-mentioned relay communication method.

[0016] Specifically, the chip includes: a processor, which is used to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned relay communication method.

[0017] An embodiment of the present application provides a computer-readable storage medium for storing a computer program. When the computer program is executed by a device, the device executes the above-mentioned relay communication method.

[0018] An embodiment of the present application provides a computer program product, including computer program instructions, which enable a computer to execute the above-mentioned relay communication method.

[0019] An embodiment of the present application provides a computer program, which, when executed on a computer, enables the computer to execute the above-mentioned relay communication method.

[0020] The embodiment of the present application can divide more appropriate QoS information for one or more hops in the multi-hop relay link based on the segmentation information of the QoS information in the multi-hop relay link. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of an application scenario according to an embodiment of the present application.

[0022] FIG2A is a schematic diagram of 3GPP transmission mode 3. FIG.

[0023] FIG2B is a schematic diagram of 3GPP transmission mode 4. FIG.

[0024] FIG3 is a schematic diagram of UE-to-UE relay.

[0025] FIG4 is a schematic diagram of a flow chart of establishing a UE-to-UE relay connection.

[0026] FIG5 is a schematic diagram of a UE architecture in a UE-to-UE relay.

[0027] FIG6 is a schematic flowchart of a relay communication method according to an embodiment of the present application.

[0028] FIG7 is a schematic flowchart of a relay communication method according to another embodiment of the present application.

[0029] FIG8 is a schematic flowchart of a relay communication method according to another embodiment of the present application.

[0030] FIG9a, FIG9b, FIG9c and FIG9d are schematic diagrams of application scenarios of the relay communication method.

[0031] FIG10 is a schematic flowchart of a relay communication method according to another embodiment of the present application.

[0032] 11a and 11b are schematic diagrams of application scenarios of the relay communication method.

[0033] FIG12 is a schematic flowchart of a relay communication method according to another embodiment of the present application.

[0034] FIG13 is a schematic diagram of an application scenario of the relay communication method.

[0035] FIG14 is a schematic flowchart of a relay communication method according to another embodiment of the present application.

[0036] FIG15 is a schematic flowchart of a relay communication method according to another embodiment of the present application.

[0037] FIG16 is a schematic flowchart of a relay communication method according to another embodiment of the present application.

[0038] 17A to 17D are schematic flow charts of examples of QoS segmentation in a multi-hop relay link.

[0039] FIG18 is a schematic block diagram of a first terminal according to an embodiment of the present application.

[0040] FIG19 is a schematic block diagram of a first terminal according to another embodiment of the present application.

[0041] FIG20 is a schematic block diagram of a network device according to an embodiment of the present application.

[0042] FIG21 is a schematic block diagram of a network device according to another embodiment of the present application.

[0043] Figure 22 is a schematic structural diagram of a communication device according to an embodiment of the present application.

[0044] Figure 23 is a schematic block diagram of a chip according to an embodiment of the present application.

[0045] Figure 24 is a schematic block diagram of a communication system according to an embodiment of the present application. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0047] 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.

[0048] 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.

[0049] In one embodiment, 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.

[0050] In one embodiment, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein 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, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0051] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0052] The terminal device can be a station (STAION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0053] In an embodiment of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0054] In an embodiment of the present application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0055] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0056] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a future evolved PLMN network or a network device in an NTN network, etc.

[0057] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Alternatively, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0058] 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 used by the cell (for example, frequency domain resources, or spectrum resources). 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 cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0059] FIG1 exemplarily illustrates a communication system 100. The communication system includes a network device 110 and two terminal devices 120. In one embodiment, the communication system 100 may include multiple network devices 110, and each network device 110 may include a different number of terminal devices 120 within its coverage area, which is not limited in this embodiment of the present application.

[0060] In one embodiment, the communication system 100 may further include other network entities such as a Mobility Management Entity (MME) and an Access and Mobility Management Function (AMF), which is not limited in this embodiment of the present application.

[0061] Among them, the network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks for communicating with the access network equipment. The access network equipment can be an evolutionary base station (evolutional node B, abbreviated as eNB or e-NodeB) macro base station, micro base station (also called "small base station"), pico base station, access point (AP), transmission point (TP) or new generation base station (new generation Node B, gNodeB), etc. in a long-term evolution (LTE) system, a next-generation (mobile communication system) (next radio, NR) system or an authorized auxiliary access long-term evolution (LAA-LTE) system.

[0062] It should be understood that in the embodiments of the present application, a device having a communication function in a network / system may be referred to as a communication device. Taking the communication system shown in Figure 1 as an example, the communication device may include a network device and a terminal device having a communication function. The network device and the terminal device may be specific devices in the embodiments of the present application and will not be described in detail here. The communication device may also include other devices in the communication system, such as a network controller, a mobility management entity, and other network entities, which are not limited in the embodiments of the present application.

[0063] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0064] 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.

[0065] 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 indication, configuration and configuration, etc.

[0066] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0067] 1. Long Term Evolution (LTE) Device to Device (D2D) / V2X

[0068] Device-to-device communication is a sidelink (SL) transmission technology based on D2D. Unlike traditional cellular systems where communication data is received or sent through base stations, the Internet of Vehicles system uses direct terminal-to-terminal communication, resulting in higher spectrum efficiency and lower transmission latency.

[0069] 3GPP includes two transmission modes: Mode 3 and Mode 4.

[0070] Mode 3: As shown in Figure 2A, the terminal's transmission resources are allocated by the base station, and the terminal transmits data on the sidelink based on the allocated resources. The base station can allocate resources for a single transmission or for semi-static transmission.

[0071] Mode 4: As shown in FIG2B , the vehicle terminal selects a resource in the resource pool for data transmission.

[0072] In 3GPP, D2D includes different phases:

[0073] (1) Proximity-based Service (ProSe): In Rel-12 / 13, device-to-device communication is studied for ProSe scenarios, mainly targeting public safety services.

[0074] In proximity services, by configuring the location of resource pools in the time domain, for example, the resource pools are discontinuous in the time domain, the UE can transmit / receive data discontinuously on the sidelink, thereby achieving power saving.

[0075] (2) Internet of Vehicles: In Rel-14 / 15, the Internet of Vehicles system was studied for vehicle-to-vehicle communication scenarios, mainly for relatively high-speed vehicle-to-vehicle and vehicle-to-person communication services;

[0076] In V2X, since the on-board system has continuous power supply, power efficiency is not the main issue, but the delay of data transmission is the main issue. Therefore, the system design requires the terminal equipment to perform continuous transmission and reception.

[0077] (3) Wearable devices, further enhanced device-to-device (FeD2D): In Rel-14, this topic studies the scenario of wearable devices accessing the network through mobile phones, mainly targeting scenarios with low mobile speed and low power access.

[0078] In FeD2D, during the pre-research phase, 3GPP concluded that a base station could configure the discontinuous reception (DRX) parameters of a remote terminal through a relay terminal. However, because the topic did not enter the standardization phase, the specific details of how to perform DRX configuration have not been finalized.

[0079] NR V2X

[0080] Based on LTE V2X, NR V2X is not limited to broadcast scenarios, but has been further expanded to unicast and multicast scenarios, and the application of V2X is studied in these scenarios.

[0081] Similar to LTE V2X, NR V2X also includes two resource authorization modes: Mode-1 and Mode-2. Furthermore, a user may be in a mixed mode, that is, they can use Mode-1 to acquire resources and Mode-2 to acquire resources at the same time. The resource acquisition is indicated by the sidelink grant, that is, the sidelink grant indicates the time-frequency position of the corresponding Physical Sidelink Control Channel (PSCCH) and Physical Sidelink Shared Channel (PSSCH) resources.

[0082] Unlike LTE V2X, in addition to the feedback-free, UE-initiated Hybrid Automatic Repeat-reQuest (HARQ) retransmission, NR V2X introduces feedback-based HARQ retransmission, which is not limited to unicast communication but also includes multicast communication.

[0083] 3. Side-by-side UE-2-UE relay technology

[0084] As shown in Figure 3, in Rel-17 ProSe, 3GPP includes a U2U (UE-to-UE) relay function based on Layer 2 and Layer 3 relays. That is, the source UE connects to the target UE through the relay UE, and the relay UE transfers data between the source UE and the target UE.

[0085] Figure 4 shows the specific connection establishment steps. The source UE, relay UE, and target UE discover each other through discovery messages or direct communication request (DCR) messages. The relay UE can help the source UE forward discovery messages or DCR messages. After discovering each other, the source UE and target UE select a relay and establish a connection with the appropriate relay. The relay then acts as a relay to establish an end-to-end proximity communication interface (PC5) connection.

[0086] 3GPP Rel-17 includes Layer 2 end-to-end relay. As shown in Figure 5, the adaptation layer (e.g., the Sidelink Relay Adaptation Protocol (SRAP) layer) is placed above the control plane and user plane Radio Link Control (RLC) sublayers between the relay UE and the source UE / target UE. The PC5 Service Data Adaptation Protocol (SDAP) / Packet Data Convergence Protocol (PDCP) and Radio Resource Control (RRC) terminate between the source terminal and the target. The RLC, Medium Access Control (MAC), and Physical layer (PHY) terminate in each link (i.e., the link between the source terminal and the relay terminal and the link between the relay terminal and the target). There is currently no conclusion on whether the adaptation layer is also supported at the PC5 interface between the source UE and the relay UE.

[0087] An example of L2UE to UE relay is as follows:

[0088] (1) The adaptation layer of the relay terminal supports sidelink bearer mapping between access PC5 RLC channels. For sidelink relay services, different end-to-end bearers, such as signaling radio bearers (SRBs) and data radio bearers (DRBs), of the same remote UE and / or different remote UEs can be mapped N:1 and multiplexed on a single PC5 RLC channel.

[0089] (2) The adaptation layer is used to support terminal identification for sideline services (multiplexing data from multiple terminals). The terminal PC5 radio bearer and terminal identification information are included in the adaptation layer so that the target can associate received data packets with a specific PDCP entity associated with the source terminal's radio bearer.

[0090] 4. PC5QoS, examples are shown in the following table:

[0091] The POI in the table can represent the PC5 5G QoS identifier (5QI). A POI value can correspond to a value or value range indicating a set of QoS information. For example, a POI value of 25 can correspond to: Resource Type (Resource Type) is GBR, Priority (Default Priority Level) is 2, Delay (Packet Delay Budget) is 200ms, and Error Rate (Packet Error Rate) is 0. -2 The default maximum data burst volume (Default Maximum Data Burst Volume) is N / A, and the default averaging window (Default Averaging Window) is 2000ms.

[0092] Related technologies primarily focus on single-hop scenarios and do not consider QoS segmentation in multi-hop scenarios. For example, in a single-hop U2U scenario, the relay UE can segment the end-to-end Quality of Service (QoS) into QoS parameters for each hop. However, in a multi-hop scenario, where multiple (or multi-hop) relays exist, the solution provided by the embodiments of the present application can determine one or more of the following: which relay segments the QoS parameters, how the segments are segmented, and the segmentation process.

[0093] FIG6 is a schematic flow chart of a relay communication method 600 according to an embodiment of the present application. The method 600 may optionally be applied to the systems shown in FIG1 to FIG5 , but is not limited thereto. The method includes at least part of the following contents.

[0094] S610: A first terminal obtains segmentation information of quality of service (QoS) information of a multi-hop relay link. In one embodiment, the first terminal may be in the multi-hop relay link. In another embodiment, the first terminal may not be in the multi-hop relay link.

[0095] In an embodiment of the present application, in a wireless communication scenario, such as a sideline communication scenario, a multi-hop relay link may include two or more relay terminals. The role of the relay in the multi-hop relay link of the embodiment of the present application may be a terminal. For example, the multi-hop relay link of the embodiment of the present application may be a U2U relay link. The first terminal may be a terminal in the multi-hop relay link. In the U2U relay link, the first terminal may be a relay terminal of the multi-hop relay link or an end terminal. The end terminal may be located at the edge of the multi-hop relay link, and the end terminal may also be called a remote terminal, an edge terminal, etc. The end terminal may include a source terminal and / or a target terminal. The first terminal may obtain the slicing information of the QoS information in the multi-hop relay link.

[0096] In an embodiment of the present application, QoS information may include multiple examples. For example, refer to the resource type, priority, delay, bit error rate, default maximum data burst, default averaging window, etc. shown in the table above. By splitting the QoS information that needs to be split in the multi-hop relay link, the splitting information of the QoS information can be obtained. For example, the overall delay (or end-to-end delay) is 150ms (microseconds). In a three-hop relay link, after splitting, it becomes 50ms for the first hop, 60ms for the second hop, and 40ms for the third hop. For another example, the overall averaging window (or end-to-end averaging window) is 2000ms. In a four-hop relay link, after splitting, it becomes 500ms for the first hop, 600ms for the second hop, 700ms for the third hop, and 200ms for the fourth hop.

[0097] If a multi-hop relay link includes multiple types of QoS information that need to be segmented, such as resource type, priority, latency, bit error rate, default maximum burst size, and default averaging window, the QoS information that can be segmented can be segmented, while the QoS information that cannot be segmented can remain unchanged. For example, latency, bit error rate, default maximum burst size, and default averaging window can be segmented according to different hops, while the resource type and priority can remain unchanged.

[0098] In an embodiment of the present application, the QoS information that needs to be split in a multi-hop relay link can be the QoS information of the entire multi-hop relay link (or called end-to-end QoS information), or it can be the QoS information remaining after one or more splits (or called the QoS information from this hop to the end). For example, the overall QoS information has a latency of 150ms and an average window of 2000ms. After one split, the remaining latency is 100ms, and the average window is 1500ms. After two splits, the remaining latency is 70ms, and the average window is 900ms.

[0099] In the embodiment of the present application, based on the segmentation information of the QoS information in the multi-hop relay link, more appropriate QoS information can be segmented for one or more hops in the multi-hop relay link.

[0100] Figure 7 is a schematic flow chart of a relay communication method 700 according to another embodiment of the present application. The method may include one or more features of the above-described method. In this embodiment of the present application, the device performing QoS segmentation may be a terminal device. For example, a first terminal may perform QoS segmentation on the QoS information of a multi-hop relay link.

[0101] In one embodiment, as shown in FIG7 , the method further includes: S710 , the first terminal receives a split QoS configuration from a network device, where the split QoS configuration includes rules and / or mapping relationships for split QoS information.

[0102] In one embodiment, the method further includes: S720, the first terminal receives first information from a network device and / or from one or more second terminals.

[0103] In one embodiment, the first terminal obtains the segmentation information of the QoS information of the multi-hop relay link, including: the first terminal performs QoS segmentation on the QoS information of the multi-hop relay link to obtain the segmentation information.

[0104] In one embodiment, as shown in FIG7 , the first terminal performs QoS segmentation on the QoS information of the multi-hop relay link to obtain the segmentation information, including: S730 , the first terminal performs QoS segmentation on the QoS information of the multi-hop relay link based on the first information and / or the segmentation QoS configuration to obtain the segmentation information. The first information may include a QoS segmentation parameter.

[0105] In one embodiment, the method further includes: S740, when the first terminal is in a connected state, the first terminal sends the segmentation information to the network device.

[0106] In an embodiment of the present application, the first terminal can perform QoS segmentation on the QoS information of the multi-hop relay link by itself. The first terminal can first receive the first information from the network device or other terminals such as the second terminal, and then perform QoS segmentation based on the first information. The first terminal can also first receive the segmentation QoS configuration from the network device, and then perform QoS segmentation based on the rules and / or mapping relationship of the segmentation QoS information in the segmentation QoS configuration. The first terminal can also first receive the first information and the segmentation QoS configuration, and then perform QoS segmentation based on the first information and the rules and / or mapping relationship of the segmentation QoS information. The first information and the segmentation QoS configuration can be carried by the same message or by different messages. The first information and the segmentation QoS configuration can come from the same device or from different devices. For example, the segmentation QoS configuration comes from the network device, and the first information comes from the second terminal.

[0107] Figure 8 is a schematic flow chart of a relay communication method 800 according to another embodiment of the present application. This method may include one or more features of the aforementioned method. In this embodiment of the present application, the device performing QoS segmentation may be a network device. For example, the network device may perform QoS segmentation on the QoS information of a multi-hop relay link and then send the segmentation information to the first terminal.

[0108] In one embodiment, the first terminal obtains the segmentation information of the QoS information of the multi-hop relay link, including: the first terminal receives the segmentation information obtained by the network device performing QoS segmentation on the QoS information of the multi-hop relay link.

[0109] In one embodiment, as shown in FIG8 , the method further includes:

[0110] S810. The first terminal sends first information to a network device, where the first information is used to assist the network device in performing QoS segmentation.

[0111] In one embodiment, the first terminal receives the split information obtained by the network device performing QoS splitting on the QoS information of the multi-hop relay link, including: S820, the first terminal receives the split information obtained by the network device performing QoS splitting based on the first information and / or split QoS configuration.

[0112] In an embodiment of the present application, the network device may perform QoS segmentation on the QoS information of the multi-hop relay link based on the first information and then send the segmentation information to the first terminal. The network device may also perform QoS segmentation on the QoS information of the multi-hop relay link based on the rules and / or mapping relationship for segmenting the QoS information. The network device may also perform QoS segmentation on the QoS information of the multi-hop relay link based on the first information and the rules and / or mapping relationship for segmenting the QoS information. After performing QoS segmentation, the network device may send the segmentation information obtained after segmentation to one or more terminals in the multi-hop relay network.

[0113] In one embodiment, the first information includes at least one of the following QoS segmentation parameters:

[0114] Number of relay hops;

[0115] Terminal measurement results;

[0116] QoS segmentation recommendation information;

[0117] Radio Resource Control (RRC) status;

[0118] Resource acquisition mode.

[0119] In one embodiment, the relay hop count includes the hop count between the first terminal and the end terminal in the multi-hop relay link. The hop count between the first terminal and the end terminal in the multi-hop relay link can also be referred to as the hop count experienced by the first terminal in the multi-hop relay link. For example, as shown in FIG9a , it is assumed that the multi-hop relay link includes a source UE, a relay UE1, a relay UE2, a relay UE3, and a target UE in sequence. If calculated according to the hop count between each UE and the source UE, it can be obtained that: the hop count of relay UE1 is 1 (for example, recorded as hop1), the hop count of relay UE2 is 2 (for example, recorded as hop2), the hop count of relay UE3 is 3 (for example, recorded as hop3), and the hop count of the target UE is 4 (for example, recorded as hop4). As shown in FIG9b , according to the hop count between each UE and the target UE, it can be obtained that: the hop count of the source UE is 4, the hop count of relay UE1 is 3, the hop count of relay UE2 is 2, and the hop count of relay UE3 is 1. The above hop count calculation method is merely an example and not a limitation. In the embodiments of the present application, the hop count can be calculated in a variety of ways, for example, starting from 0 for the first hop from a certain end terminal and incrementing by 1 each time; or starting from 10 and incrementing by 10 each time. Other counting methods are also possible and are not specifically limited.

[0120] The first terminal may perform QoS segmentation based on the number of hops between itself and the end terminal in the multi-hop relay link, or send the number of hops to the network to obtain segmentation information of the QoS information of the multi-hop relay link from the network.

[0121] In one embodiment, the measurement result of the terminal includes the measurement result of at least one of the first terminal and one or more second terminals in the multi-hop relay link. For example, there may be multiple measurement quantities in the measurement result, such as constant bit rate (CBR), sidelink (SL)-reference signal received power (RSRP), sidelink discovery (SD)-RSRP, etc. The measurement quantity and the QoS segmentation method may have an associated relationship. For example, the higher the SL-RSRP value, the smaller the delay in the QoS information, the shorter the averaging window, or the lower the bit error rate. After the first terminal obtains its own measurement result, or obtains the measurement result of other terminals such as one or more second terminals, it can perform QoS segmentation based on its own and / or other terminal's measurement results, or send the measurement result to the network to obtain segmentation information of the QoS information of the multi-hop relay link from the network.

[0122] In one embodiment, the QoS segmentation recommendation information includes the QoS segmentation recommendation information of at least one of the first terminal and one or more second terminals in the multi-hop relay link. For example, the first terminal can obtain its own configured QoS segmentation recommendation information, or it can obtain QoS segmentation recommendation information from other terminals such as one or more second terminals. The QoS segmentation recommendation information may include specific segmentation values ​​or segmentation ranges, etc. For example, the segmentation value of the delay is 50ms, the segmentation value of the average window is 600ms, etc. For another example, the segmentation range of the delay is 40ms to 60ms, the segmentation value of the average window is 300ms to 700ms, etc. After the first terminal obtains its own QoS segmentation recommendation information, or obtains the QoS segmentation recommendation information of other terminals such as one or more second terminals, it can perform QoS segmentation based on its own and / or other terminals' QoS segmentation recommendation information, or send the QoS segmentation recommendation information to the network to obtain segmentation information of the QoS information of the multi-hop relay link from the network.

[0123] In one embodiment, the RRC state and / or resource acquisition mode includes the RRC state and / or resource acquisition mode of the first terminal and one or more second terminals in the multi-hop relay link.

[0124] For example, the RRC state may include an idle state, a connected state, and an inactive state. The first terminal may obtain its own RRC state, or the RRC state of other terminals. The first terminal may obtain segmentation information based on its own and / or other UE's RRC state. If the first terminal is in an RRC connected state, it may obtain segmentation information of the QoS information of the multi-hop relay link from the network; if the first terminal is in an idle state or an inactive state, it may perform QoS segmentation on its own. Obtaining segmentation information based on the RRC state of other UEs includes determining the specific value of the segmentation by referring to the RRC state of other UEs.

[0125] For another example, the resource acquisition mode may include mode 1 or mode 2, where mode 1 indicates that the resources are scheduled by the network, and mode 2 indicates that the resources are autonomously selected by the UE. The first terminal obtains the segmentation information according to the resource acquisition mode, including: if the first terminal or other terminals are in mode 1, the QoS segmentation of the hop associated with the UE may have higher requirements, such as a shorter packet delay budget (PDB); if the first terminal or other terminals are in mode 2, the QoS segmentation of the hop associated with the UE may have lower requirements, such as a longer PDB.

[0126] In one embodiment, the one or more second terminals include one or more terminals other than the first terminal in the multi-hop relay link. In an embodiment of the present application, the first terminal and the second terminal may be different terminals in the multi-hop relay link, and the positional relationship between the first terminal and the second terminal is not limited. The first terminal and the second terminal may be directly connected or not directly connected. For example, in Figure 9a, the multi-hop relay link includes a source UE, a relay UE1, a relay UE2, a relay UE3, and a target UE. If the source UE is the first terminal, any one or more other terminals may be the second terminal. If the relay UE1 is the first terminal, any one or more other terminals may be the second terminal.

[0127] In one embodiment, the one or more second terminals include the remaining terminals in the multi-hop relay link from the first terminal to at least one of the end terminals, such as the source terminal, the target terminal, and the remote terminal. In an embodiment of the present application, the first terminal and the second terminal can be different terminals in the multi-hop relay link, and the first terminal and the second terminal can have a certain positional relationship. For example, in Figure 9a, the multi-hop relay link includes the source UE, relay UE1, relay UE2, relay UE3 and target UE. If relay UE1 is the first terminal, among the remaining terminals from relay UE1 to the target UE, any one or more terminals of relay UE2, relay UE3 and target UE are second terminals. If relay UE2 is the first terminal, among the remaining terminals from relay UE2 to the source UE, relay UE1 and / or source UE are second terminals.

[0128] In one embodiment, the method further includes: the first terminal obtains the QoS information of the multi-hop relay link. The QoS information of the multi-hop relay link can also be referred to as the QoS information to be split. The QoS information of the multi-hop relay link can be transmitted in the same message as the first information, or can be transmitted separately. The first terminal can obtain the QoS information of the multi-hop relay link and the first information from the same device, or can obtain the QoS information of the multi-hop relay link and the first information from different devices respectively.

[0129] In one embodiment, the QoS information of the multi-hop relay link is end-to-end QoS information, wherein the end-to-end QoS information may be obtained from at least one of an end terminal, such as a source terminal and a destination terminal.

[0130] In one embodiment, the first terminal is a control terminal, which includes at least one of an end terminal, a control relay terminal, and a service terminal outside a multi-hop relay link.

[0131] In one embodiment, the end-to-end QoS information is obtained in at least one of the following ways:

[0132] The control relay terminal receives the end-to-end QoS information from the end terminal;

[0133] The end terminal obtains the end-to-end QoS information locally;

[0134] The service terminal receives the end-to-end QoS information from the end terminal.

[0135] For example, end-to-end QoS information is QoS information from a source terminal to a target terminal, or QoS information from a target terminal to a source terminal, or QoS information from a remote terminal to a network, or QoS information from a network to a remote terminal. The first terminal may obtain the end-to-end QoS information from the source terminal, the target terminal, or the remote terminal.

[0136] In one embodiment, the first terminal is a control relay terminal. For example, the control relay terminal can obtain end-to-end QoS information from an end terminal. The first terminal can perform QoS segmentation based on the end-to-end QoS information, or send the end-to-end QoS information to the network to obtain QoS segmentation information for the multi-hop relay link from the network. The end terminal can include at least one of a source terminal, a destination terminal, and a remote terminal.

[0137] In one embodiment, the determination method of controlling the relay terminal includes at least one of the following:

[0138] A relay terminal directly connected to an end terminal in a multi-hop relay link;

[0139] The upper layer of the first terminal indicates that the first terminal is a control relay terminal;

[0140] The source terminal configures the first terminal as a control relay terminal;

[0141] The target terminal configures the first terminal as a control relay terminal;

[0142] The remote terminal configures the first terminal as a control relay terminal;

[0143] The network device configures the first terminal as a control relay terminal;

[0144] The first terminal in the connected state is a control relay terminal.

[0145] In some examples, if the multi-hop relay link includes a source UE, relay UE1, relay UE2, and a target UE. The source UE is connected to relay UE1, relay UE1 is connected to relay UE2, and relay UE2 is connected to the target UE. For example, the node closest to the source UE is relay UE1, and the relay UE1 can serve as a control relay terminal. For another example, the upper layer of relay UE2 indicates that it can serve as a control relay terminal. For another example, if the node configured for the source UE is relay UE1, relay UE1 can serve as a control relay terminal. For another example, if the node configured for the target UE is relay UE1, relay UE1 can serve as a control relay terminal. In the above examples, the QoS information to be split may include QoS information from relay UE1 to the target UE, or QoS information from relay UE1 to the source UE.

[0146] In some examples, if a multi-hop relay link includes a network device, relay UE3, relay UE4, and a remote UE, the network device is connected to relay UE3, relay UE3 is connected to relay UE4, and relay UE4 is connected to the target UE. For example, if the node configured for the remote UE is relay UE3, relay UE3 can serve as a control relay terminal. For another example, if the node configured for the network device is relay UE3, relay UE3 can serve as a control relay terminal. In the above example, the QoS information to be split can include QoS information from relay UE3 to the remote UE.

[0147] In some examples, if there are terminals in a connected state among the terminals of the multi-hop relay link, the terminals in the connected state can be selected as control relay terminals to facilitate sending required information to the network.

[0148] In one embodiment, the QoS information of the multi-hop relay link includes the remaining QoS information from the first terminal to the end terminal (which may be referred to as the QoS information of this hop to the end terminal). For example, the remaining QoS information from the first terminal to the end terminal may include QoS information from the relay terminal (the first terminal) to the source terminal or the target terminal.

[0149] In one embodiment, the remaining QoS information is obtained by the first terminal from a first directly connected terminal, where the first directly connected terminal is a terminal that has obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal. The remaining QoS information on the end terminal and the end-to-end QoS information may be the same.

[0150] In one embodiment, the first terminal is any relay terminal in the multi-hop relay link. A direct communication link exists between the first terminal and the first directly connected terminal. In a U2U relay, the QoS splitting direction may include a direction from one end terminal to another end terminal. For example, the direction from the source terminal to the destination terminal. Alternatively, the direction from the destination terminal to the source terminal. In this embodiment of the present application, the first directly connected terminal may also be referred to as the previous hop terminal or previous hop node of the first terminal.

[0151] For example, as shown in Figure 9c, assume that the QoS splitting direction of a multi-hop relay link is from the source UE through relay UE1, relay UE2, and relay UE3, to the target UE. For relay UE1, the first directly connected terminal can be the source UE. For relay UE2, the first directly connected terminal can be relay UE1, and for relay UE3, the first directly connected terminal can be relay UE2.

[0152] For another example, as shown in Figure 9d, assume that the QoS splitting direction of the multi-hop relay link is from the target UE through relay UE3, relay UE2, and relay UE1, to the source UE. For relay UE1, the first directly connected terminal can be relay UE2. For relay UE2, the first directly connected terminal can be relay UE3. For relay UE3, the first directly connected terminal can be the target UE.

[0153] FIG10 is a schematic flow chart of a relay communication method 1000 according to another embodiment of the present application. The method may include one or more features of the above method. In one embodiment, the method further includes:

[0154] S1010: The first terminal sends the split information to one or more third terminals of the multi-hop relay link. In an embodiment of the present application, after the first terminal in the multi-hop relay link obtains the split information of the QoS information, it can send the split information to other nodes of the multi-hop relay link, such as terminals or a network.

[0155] In one embodiment, the one or more third terminals include one or more terminals in the multi-hop relay link other than the first terminal. Referring to Figure 9a, if the source UE is the first terminal, any one or more other terminals may be third terminals. If the relay UE1 is the first terminal, any one or more other terminals may be third terminals.

[0156] In an embodiment of the present application, the second terminal and the third terminal may represent terminals different from the first terminal, but the second terminal and the third terminal may be the same terminal in some scenarios. For example, relay UE2 (first terminal) can receive the first information and / or QoS information of the multi-hop relay link to be split from relay UE1 (second terminal). Relay UE2 can also send splitting information to relay UE1 (third terminal). For another example, relay UE2 (first terminal) can receive the first information and / or QoS information of the multi-hop relay link to be split from relay UE1 (second terminal). Relay UE2 can also send splitting information to relay UE3 (third terminal).

[0157] In one embodiment, the one or more third terminals include a first directly connected terminal and / or a second directly connected terminal of the first terminal in the multi-hop relay link. The first directly connected terminal is a terminal that has obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal. The second directly connected terminal is a terminal that has not obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal. In an embodiment of the present application, the first directly connected terminal may also be referred to as the previous hop terminal or previous hop node of the first terminal. The second directly connected terminal may also be referred to as the next hop terminal or next hop node of the first terminal.

[0158] For example, as shown in Figure 9c, for relay UE1, the first directly connected terminal may be the source UE, and the second directly connected terminal may be relay UE2. For relay UE2, the first directly connected terminal may be relay UE1, and the second directly connected terminal may be relay UE3. For relay UE3, the first directly connected terminal may be relay UE2, and the second directly connected terminal may be the target UE.

[0159] For another example, as shown in Figure 9d, for relay UE1, the first directly connected terminal may be relay UE2, and the second directly connected terminal may be the source UE. For relay UE2, the first directly connected terminal may be relay UE3, and the second directly connected terminal may be relay UE1. For relay UE3, the first directly connected terminal may be the target UE, and the second directly connected terminal may be relay UE2.

[0160] In an embodiment of the present application, if the first terminal sends the slicing information to the second directly connected terminal, it is a backward transmission method. In this case, after the first terminal receives the remaining QoS information (or end-to-end QoS information) from the first directly connected terminal, it can send the obtained slicing information and the remaining QoS information after passing through the first terminal to the second directly connected terminal, see Figure 11a. If the first terminal sends the slicing information to the first directly connected terminal, it is a forward transmission method. In this case, after the first terminal receives the remaining QoS information (or end-to-end QoS information) from the first directly connected terminal, it can return the obtained slicing information to the first directly connected terminal, and send the remaining QoS information after passing through the second terminal to the second directly connected terminal, see Figure 11b.

[0161] In one embodiment, the split information is carried by PC5-RRC signaling or PC5 non-access layer signaling. For example, the PC5 non-access layer may include a proximity service (ProSe) layer and / or a V2X layer. The PC5 non-access layer signaling is a PC5-S.

[0162] In one embodiment, as shown in FIG10 , the method further includes:

[0163] S1020: The first terminal receives first response information from one or more third terminals, where the first response information is used to indicate that the one or more third terminals accept or reject the segmentation information.

[0164] In one embodiment, the method further comprises:

[0165] S1030: When the first response information indicates that the one or more third terminals reject the segmentation information, the first terminal reconfigures new segmentation information for the one or more third terminals. For example, the number of reconfigurations or the time limit may be limited. In addition, if the first terminal still cannot obtain appropriate segmentation information after exceeding the number of reconfigurations or the time limit, a result such as a radio link failure (RLF) may be obtained, and operations such as relay reselection may also be triggered.

[0166] FIG12 is a schematic flow chart of a relay communication method 1200 according to another embodiment of the present application. The method may include one or more features of the above method. In one embodiment, as shown in FIG12 , the method further includes:

[0167] S1210: A first terminal receives segmentation information of QoS information of one or more fourth terminals in a multi-hop relay link.

[0168] In one embodiment, the method further comprises:

[0169] S1220: The first terminal sends second response information to one or more fourth terminals, where the second response information is used to indicate whether the first terminal accepts or rejects the segmentation information.

[0170] In one embodiment, the method further comprises:

[0171] S1230: When the second response information indicates that the first terminal rejects the segmentation information, the first terminal receives new segmentation information reconfigured for the first terminal by the one or more fourth terminals.

[0172] In one embodiment, the one or more fourth terminals include one or more terminals in the multi-hop relay link except the first terminal.

[0173] In one embodiment, the one or more fourth terminals include a first directly connected terminal and / or a second directly connected terminal of the first terminal in the multi-hop relay link. The first directly connected terminal is a terminal that has obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal, and the second directly connected terminal is a terminal that has not obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal.

[0174] In an embodiment of the present application, referring to FIG13 , the first directly connected terminal and / or the second directly connected terminal may send segmentation information to the first terminal. The first terminal rejects or accepts the segmentation information via the second response information. If the segmentation information is rejected, the first directly connected terminal and / or the second directly connected terminal may reconfigure new segmentation information for the first terminal and send the new segmentation information to the first terminal again.

[0175] In an embodiment of the present application, the second terminal, the third terminal, and the fourth terminal may represent terminals different from the first terminal, but the second terminal, the third terminal, and the fourth terminal may be the same terminal in some scenarios. For example, relay UE2 (first terminal) may receive first information and / or QoS information of the multi-hop relay link to be split from relay UE1 (second terminal). Relay UE2 may also send splitting information to relay UE1 (third terminal). Relay UE2 may also receive splitting information from relay UE1 (fourth terminal). For another example, relay UE2 (first terminal) may receive first information and / or QoS information of the multi-hop relay link to be split from relay UE1 (second terminal). Relay UE2 may also receive splitting information from relay UE1 (fourth terminal). Relay UE2 may also send splitting information to relay UE3 (third terminal).

[0176] In one embodiment, in the case of unidirectional splitting, the associated hop of the sending node in the data transmission direction of the multi-hop relay link is configured with corresponding splitting information, and the associated hop is a hop from the sending node to a directly connected receiving node.

[0177] For example, referring to Figure 9c, assume that the first direction of a multi-hop relay link is from the source UE to the target UE, sequentially through relay UE1, relay UE2, and relay UE3. Relay UE1 is a sending node, and relay UE2 is a receiving node. The associated hop for relay UE1 can be a hop from relay UE1 to relay UE2, such as hop2. Relay UE2 is a sending node, and relay UE3 is a receiving node. The associated hop for relay UE2 can be a hop from relay UE2 to relay UE3, such as hop3.

[0178] For another example, referring to Figure 9d , assuming the second direction is the opposite of the first direction, the associated hop for relay UE1 can be the hop from relay UE1 to the source UE, for example, hop1. For relay UE2 and relay UE3, the former is a sending node, and the latter is a receiving node. The associated hop for relay UE2 can be the hop from relay UE2 to relay UE1, for example, hop2.

[0179] In one embodiment, in the case of bidirectional splitting, one or more associated hops of the node on the multi-hop relay link are configured with corresponding splitting information.

[0180] For example, assume a multi-hop relay link includes a source UE, relay UE1, relay UE2, relay UE3, and a target UE. The associated hops of relay UE1 may include hop1 between the source UE and relay UE1, and hop2 between relay UE1 and relay UE2. Hop1 and hop2 have corresponding segmentation information 1 and segmentation information 2, respectively.

[0181] In one embodiment, the QoS information is divided into at least one of the following ways:

[0182] The sum of the delay information of each hop in the multi-hop relay link is less than or equal to the delay information of the multi-hop relay link as a whole;

[0183] The product of the accuracy rates of each hop in the multi-hop relay link is greater than or equal to the accuracy rate of the entire multi-hop relay link.

[0184] For example, referring to FIG9a , a multi-hop relay link includes hop1, hop2, hop3, and hop4, wherein the sum of the delays of hop1, hop2, hop3, and hop4 is less than the overall delay of the multi-hop relay link.

[0185] For another example, referring to Figure 9a , a multi-hop relay link includes hop1, hop2, hop3, and hop4, where the product of the accuracy rates of hop1, hop2, hop3, and hop4 is greater than or equal to the accuracy rate of the multi-hop relay link as a whole. Alternatively, the product of the error rates or bit error rates of hop1, hop2, hop3, and hop4 is less than or equal to the error rate or bit error rate of the multi-hop relay link as a whole.

[0186] FIG14 is a schematic flow chart of a relay communication method 1400 according to another embodiment of the present application. The method can optionally be applied to the systems shown in FIG1 to FIG5 , but is not limited thereto. The method includes at least part of the following contents.

[0187] S1410: The network device obtains QoS information segmentation information of the multi-hop relay link. In one embodiment, the first terminal and the network device may be in the multi-hop relay link. In another embodiment, the first terminal and / or the network device may not be in the multi-hop relay link.

[0188] Figure 15 is a schematic flow chart of a relay communication method 1500 according to another embodiment of the present application. The method may include one or more features of the above-described method. In one embodiment, a network device obtains information about slicing QoS information of a multi-hop relay link, including: the network device receives information about slicing QoS information of the multi-hop relay link from a first terminal.

[0189] In one implementation, the first terminal is in a connected state.

[0190] In one embodiment, the method further comprises:

[0191] S1510: The network device sends a split QoS configuration to the first terminal, where the split QoS configuration includes a rule and / or a mapping relationship for split QoS information.

[0192] In one embodiment, the method further comprises:

[0193] S1520. The network device sends the first information to the first terminal, where the first information includes a QoS segmentation parameter.

[0194] FIG16 is a schematic flow chart of a relay communication method 1600 according to another embodiment of the present application. The method may include one or more features of the above-described method. In one embodiment, a network device obtains QoS information segmentation information of a multi-hop relay link, including: the network device performs QoS segmentation on the QoS information of the multi-hop relay link to obtain the segmentation information.

[0195] In one embodiment, the method further comprises:

[0196] S1610: The network device receives first information from the first terminal. The first information is used to assist the network device in performing QoS segmentation.

[0197] In one embodiment, the method further comprises:

[0198] S1620: The network device obtains QoS information of the multi-hop relay link.

[0199] In one embodiment, the QoS information of the multi-hop relay link includes end-to-end QoS information, or remaining QoS information from the first terminal to the end terminal.

[0200] In one embodiment, the network device performs QoS segmentation on the QoS information of the multi-hop relay link to obtain the segmentation information, including: S1630, the network device performs QoS segmentation on the QoS information of the multi-hop relay link based on the first information and / or the segmentation QoS configuration to obtain the segmentation information.

[0201] In one embodiment, the first information includes at least one of the following QoS segmentation parameters:

[0202] Number of relay hops;

[0203] Terminal measurement results;

[0204] QoS segmentation recommendation information;

[0205] Radio Resource Control RRC state;

[0206] Resource acquisition mode.

[0207] In one embodiment, the relay hop count includes the number of hops between the first terminal and an end terminal in the multi-hop relay link.

[0208] In one embodiment, the measurement result of the terminal includes measurement results of a first terminal and one or more second terminals in the multi-hop relay link.

[0209] In one embodiment, the QoS segmentation recommendation information includes QoS segmentation recommendation information of the first terminal and one or more second terminals in the multi-hop relay link.

[0210] In one embodiment, the RRC state and / or resource acquisition mode includes the RRC state and / or resource acquisition mode of the first terminal and one or more second terminals in the multi-hop relay link.

[0211] In one embodiment, the one or more second terminals include one or more terminals in the multi-hop relay link except the first terminal.

[0212] In one embodiment, the one or more second terminals include remaining terminals in the multi-hop relay link from the first terminal to at least one of a source terminal, a target terminal, and a remote terminal.

[0213] In one embodiment, the QoS information is divided into at least one of the following ways:

[0214] The sum of the delay information of each hop in the multi-hop relay link is less than or equal to the delay information of the multi-hop relay link as a whole;

[0215] The product of the accuracy rates of each hop in the multi-hop relay link is greater than or equal to the accuracy rate of the entire multi-hop relay link.

[0216] For specific examples of the network device executing the relay communication methods 1400, 1500, and 1600 of this embodiment, reference can be made to the relevant descriptions of the network device in the relay communication methods 600, 700, 1000, and 1200 executed by the first terminal. For the sake of brevity, they are not repeated here.

[0217] The embodiments of the present application can perform QoS segmentation in multi-hop links. The following are several specific examples.

[0218] Example 1: The control relay node allocates the split QoS for each hop and sends the split information to the corresponding node.

[0219] (1) The control relay node (hereinafter referred to as the control node) may be determined in at least one of the following ways:

[0220] 1. The node closest to the source UE, such as Relay UE1 in Figure 17A ;

[0221] 2. Nodes indicated by the upper layer (prose / V2X layer), which can be explicit or implicit through a mapping relationship such as a Layer 2 Identifier (L2ID) or a Transmission Profile (Tx profile);

[0222] 3. Configured by the source / target UE (Dest UE);

[0223] 4. Network configuration / UE in connected state is the control node.

[0224] (2) An example of the QoS split process is as follows:

[0225] 1. Before performing QoS segmentation, the control node obtains at least one of the following information (via PC5-S / PC5-RRC):

[0226] E2E (end-to-end) QoS: obtained from end nodes.

[0227] The number of relay hops experienced by one or more UEs is reported by each relay UE. For example, relay UE2 has experienced 2 hops from the initiator (e.g., source), and the remaining hops are 2. Relay UE3 has experienced 3 hops from the initiator (e.g., source), and the remaining hops are 1.

[0228] Measurement reports of other relay UEs: reported by each relay UE, the measurement quantity includes one or more of CBR, SL-RSRP, and SD-RSRP.

[0229] Recommended split-qos for other nodes: Obtained from other nodes.

[0230] RRC status / resource acquisition mode (mode-1 / 2) of other nodes.

[0231] 2. The control node performs QoS segmentation based on the above information:

[0232] 2-1. The result or method of the segmentation may be derived from the network configuration.

[0233] The control node reports the above information to the network, and the network sends the split information to the control node.

[0234] The network configures splitting rules and / or mapping relationships for the control nodes, that is, the configuration of how to split.

[0235] 2-2. Send the split information to each node.

[0236] The signaling sent may be PC5-RRC or PC5-S signaling (non-access layer signaling).

[0237] Upon receiving the split QoS configuration, each node can choose to accept or reject it. If the split QoS configuration is rejected, the control node can reconfigure it. For example, a maximum number of reconfigurations or a reconfiguration time limit can be set. If a reconfiguration fails, a radio link failure (RLF) is triggered and / or relay reselection is triggered.

[0238] The split QoS configuration can be unidirectional (considering the data transmission direction) or bidirectional (regardless of the data transmission direction).

[0239] For example, in a unidirectional scenario, data transmission from source to destination (SRC->DST) is performed in one direction, while the reverse direction (DST->SRC) is performed in another, similar process. For example, split-QoS is configured for each node for one hop. For example, for relay UE2 in Figure 17A, only split-QoS for hop-2 needs to be configured, while split-QoS for hop-3 can be configured in the other direction.

[0240] For another example, in bidirectional mode, regardless of the direction, the QoS on each hop is the same for data transmission in both directions. For example, the split QoS for hop-2 and the split QoS for hop-3 of relay UE2 in Figure 17A can both be configured by the same node.

[0241] 2-3. The connected UE may further report the split-QoS to the network.

[0242] 3. Examples of QoS parameters that need to be segmented and segmentation methods.

[0243] For example, consider the packet delay budget (PDB): The sum of all hops in a multi-hop relay link must be less than or equal to the end-to-end delay (e.g., the E2E packet delay budget). For example, 10 = 2 + 2 + 2 + 4. Here, 10 is the end-to-end delay, and 2, 2, 2, and 4 are the delays of hop 1, hop 2, hop 3, and hop 4, respectively.

[0244] Packet Error Rate: (1-PER_hop1)(1-PER_hop2)(1-PER_hop3)>=1-PER_e2e.

[0245] Others: Each hop can be the same as E2E.

[0246] Example 2: Each hop node allocates the split QoS on the previous (next) hop and subsequent paths and sends it to the corresponding node.

[0247] Method 1: Previous jump

[0248] QoS split process:

[0249] 1. Each node can obtain (through PC5-S / PC5-RRC) at least one of the following information before performing QoS segmentation:

[0250] H2E (this hop to end) QoS: obtained from the previous hop node. For example, in FIG17B , the previous hop node of relay UE2 is relay UE1. Relay UE2 can obtain the remaining QoS information after relay UE1 splits the data from relay UE1.

[0251] Number of relay hops experienced (remaining): reported by each relay UE. For example, relay UE2 has experienced 2 hops from the initiator (e.g., source), and 2 hops remaining. Relay UE3 has experienced 3 hops from the initiator (e.g., source), and 1 hop remaining.

[0252] Measurement reports of other (remaining) relay UEs: reported by each relay UE, the measurement quantity includes one or more of CBR, SL-RSRP, and SD-RSRP.

[0253] Recommended split-qos for other (remaining) nodes: obtained from other nodes.

[0254] RRC state / resource acquisition mode (mode-1 / 2) of other (remaining) nodes.

[0255] 2. Each node performs QoS segmentation based on the above information:

[0256] 2-1. The segmentation can come from the network configuration.

[0257] The node reports the above information to the network, and the network sends the split information to the node.

[0258] The network configures the splitting rules / mapping relationships for nodes, that is, the configuration of how to split.

[0259] 2-2. The split information is sent to the previous node, and the remaining QoS or end-to-end QoS (remaining / E2E QoS) can be informed to the next node. For example, referring to Figure 17B, relay UE1 sends the split information, such as the Split QoS for hop1 information, to the source terminal (sent previously), and sends the Split QoS for the remaining hops information to relay UE2 (sent backward).

[0260] The signaling sent is PC5-RRC or PC5-S signaling.

[0261] Upon receiving the split-QoS configuration, the node can choose to accept or reject it. If the node rejects the split QoS configuration, it must reconfigure it. For example, a maximum number of reconfigurations or a reconfiguration time limit can be set. If a reconfiguration fails, an RLF (Relay Flow) event or relay reselection is triggered.

[0262] The configuration can be unidirectional (taking the direction of data transmission into account) or bidirectional (regardless of the direction of data transmission).

[0263] For example, one-way: the data transmission direction from source to destination (SRC->DST) is a set of processes, and the reverse direction (DST->SRC) is another similar process.

[0264] For example, bidirectional: regardless of the direction, the QoS on each hop is the same for data transmission in both directions, see Figure 17B.

[0265] 2-3. The connected UE may further report the split-QoS to the network.

[0266] 3. For an example of QoS parameters that need to be segmented and the segmentation method, please refer to Example 1.

[0267] Method 2: Next jump

[0268] Some steps are the same as those in Method 1 above, with the main difference being that the node sending the remaining QoS also sends the split-QoS for the intermediate hops between it and the next hop to the next hop. For example, referring to Figure 17C , relay UE1 sends the split information, such as the split QoS for hop1 (Split QoS for hop1) and the split QoS for the remaining hops (Split QoS for the remaining hops) information, to relay UE2 (backward transmission).

[0269] In another implementation, the source UE may directly send the split QoS of hop 1 (Split-QoS for hop-1) and the split QoS of the remaining hops (split-qos for the remaining hops) to the relay UE1 (relay UE1).

[0270] Example 3: The source node allocates the split QoS for each hop and sends it to the corresponding node

[0271] QoS split process:

[0272] 1. Before performing QoS segmentation, the source node, such as the source UE, may obtain at least one of the following information (via PC5-S / PC5-RRC):

[0273] Number of relay hops: reported by each relay UE.

[0274] Measurement reports of other relay UEs: reported by each relay UE, the measurement quantities include CBR / SL-RSRP / SD-RSRP.

[0275] Recommended split-qos for other nodes: Obtained from other nodes.

[0276] RRC state / resource acquisition mode (mode-1 / 2) of other relay UEs.

[0277] 2. The source node performs QoS segmentation based on the above information:

[0278] 2-1. The segmentation can come from the network configuration.

[0279] The source node reports the above information to the network, and the network sends the split information to the source node.

[0280] The network configures splitting rules and / or mapping relationships for the source node, that is, the configuration of how to split.

[0281] 2-2. Send the split information to each node.

[0282] The signaling sent is PC5-RRC or PC5-S signaling.

[0283] After receiving the split QoS configuration, each node can choose to accept or reject it. If the node rejects the split QoS configuration, the source node can reconfigure it. For example, a maximum number of reconfigurations or a reconfiguration time limit can be set. If the reconfiguration fails, an RLF (Relay Flow) is triggered, triggering relay reselection.

[0284] The configuration can be unidirectional (taking the direction of data transmission into account) or bidirectional (regardless of the direction of data transmission).

[0285] For example, in a unidirectional scenario, the data transmission direction (SRC->DST) uses one set of processes, while the reverse direction (DST->SRC) uses another similar process. Furthermore, only one hop's split-QoS needs to be configured for each node. For example, for relay UE2 in Figure 17D , only split QoS for hop-2 needs to be configured, while split QoS for hop-3 can be configured in the other direction.

[0286] For another example, in bidirectional mode, regardless of the direction, the QoS on each hop is the same for data transmission in both directions. For example, the split QoS for hop-2 and the split QoS for hop-3 of relay UE2 in Figure 17D can both be configured by the same source node.

[0287] 2-3. The connected UE may further report the split-QoS to the network.

[0288] 3. For an example of QoS parameters that need to be segmented and the segmentation method, please refer to Example 1.

[0289] The embodiments of the present application provide a QoS enhancement mechanism for multi-hop U2U relay, which can flexibly allocate appropriate QoS information to one or more hops of a multi-hop relay link.

[0290] 18 is a schematic block diagram of a first terminal 1800 according to an embodiment of the present application. The first terminal 1800 may include: an acquiring unit 1801, configured to acquire segmentation information of quality of service (QoS) information of a multi-hop relay link.

[0291] Figure 19 is a schematic flow chart of a first terminal 1900 according to another embodiment of the present application. The first terminal 1900 may include one or more features of the first terminal described above. The first terminal 1900 may include an acquisition unit 1901 configured to acquire segmentation information of quality of service (QoS) information of a multi-hop relay link.

[0292] In one embodiment, the acquisition unit is configured to perform QoS segmentation on the QoS information of the multi-hop relay link to obtain the segmentation information.

[0293] In one embodiment, the slicing subunit is configured to perform QoS slicing on the QoS information of the multi-hop relay link based on the first information and / or the QoS slicing configuration to obtain the slicing information, where the first information includes QoS slicing parameters.

[0294] In one embodiment, the first terminal further includes:

[0295] The first receiving unit 1902 is configured to receive the split QoS configuration from a network device, where the split QoS configuration includes rules and / or mapping relationships for splitting QoS information.

[0296] In one embodiment, the first terminal further includes:

[0297] The first sending unit 1903 is configured to send the segmentation information to the network device when the first terminal is in a connected state.

[0298] In one embodiment, the acquisition unit is configured to receive the segmentation information obtained by the network device performing QoS segmentation on the QoS information of the multi-hop relay link.

[0299] In one embodiment, the first terminal further includes:

[0300] The second sending unit 1904 is configured to send first information to the network device, where the first information is used to assist the network device in performing QoS segmentation;

[0301] The second receiving unit 1905 is used to receive the split information obtained by the network device performing QoS splitting on the QoS information of the multi-hop relay link, including: the first terminal receives the split information obtained by the network device performing QoS splitting based on the first information and / or split QoS configuration.

[0302] In one embodiment, the first information includes at least one of the following QoS segmentation parameters:

[0303] Number of relay hops;

[0304] Terminal measurement results;

[0305] QoS segmentation recommendation information;

[0306] Radio Resource Control RRC state;

[0307] Resource acquisition mode.

[0308] In one embodiment, the relay hop count includes the number of hops between the first terminal and an end terminal in the multi-hop relay link.

[0309] In one embodiment, the measurement result of the terminal includes a measurement result of at least one of a first terminal and one or more second terminals in the multi-hop relay link.

[0310] In one embodiment, the QoS segmentation recommendation information includes QoS segmentation recommendation information of at least one of the first terminal and one or more second terminals in the multi-hop relay link.

[0311] In one embodiment, the RRC state and / or resource acquisition mode includes the RRC state and / or resource acquisition mode of the first terminal and one or more second terminals in the multi-hop relay link.

[0312] In one embodiment, the first terminal further includes:

[0313] The third receiving unit 1906 is configured to receive the first information from a network device and / or from one or more second terminals.

[0314] In one embodiment, the one or more second terminals include one or more terminals in the multi-hop relay link except the first terminal; or, the one or more second terminals include the remaining terminals from the first terminal to the end terminal in the multi-hop relay link.

[0315] In one embodiment, the acquiring unit is further configured to acquire QoS information of the multi-hop relay link.

[0316] In one embodiment, the QoS information of the multi-hop relay link includes end-to-end QoS information.

[0317] In one embodiment, the first terminal is a control terminal, which includes at least one of an end terminal, a control relay terminal, and a service terminal outside a multi-hop relay link.

[0318] In one embodiment, the end-to-end QoS information is obtained in at least one of the following ways:

[0319] The control relay terminal receives the end-to-end QoS information from the end terminal;

[0320] The end terminal obtains the end-to-end QoS information locally;

[0321] The service terminal receives the end-to-end QoS information from the end terminal.

[0322] In one embodiment, the determination method of controlling the relay terminal includes at least one of the following:

[0323] A relay terminal directly connected to an end terminal in a multi-hop relay link;

[0324] The upper layer of the first terminal indicates that the first terminal is a control relay terminal;

[0325] The source terminal configures the first terminal as a control relay terminal;

[0326] The target terminal configures the first terminal as a control relay terminal;

[0327] The remote terminal configures the first terminal as a control relay terminal;

[0328] The network device configures the first terminal as a control relay terminal;

[0329] The first terminal in the connected state is a control relay terminal.

[0330] In one embodiment, the QoS information of the multi-hop relay link includes remaining QoS information from the first terminal to the end terminal.

[0331] In one embodiment, the remaining QoS information is obtained by the first terminal from a first directly connected terminal. The first directly connected terminal is a terminal that has obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal.

[0332] In one implementation, the first terminal is any relay terminal in the multi-hop relay link.

[0333] In one embodiment, the first terminal further includes:

[0334] The third sending unit 1907 is configured to send the split information to one or more third terminals of the multi-hop relay link.

[0335] In one embodiment, the first terminal further includes:

[0336] The fourth receiving unit 1908 is configured to receive first response information from one or more third terminals, where the first response information is used to indicate whether the one or more third terminals accept or reject the segmentation information.

[0337] In one embodiment, the first terminal further includes:

[0338] The fourth sending unit 1909 is further configured to reconfigure new segmentation information for the one or more third terminals when the first response information indicates that the one or more third terminals reject the segmentation information.

[0339] In one embodiment, the one or more third terminals include one or more terminals in the multi-hop relay link except the first terminal.

[0340] In one embodiment, the one or more third terminals include a first directly connected terminal and / or a second directly connected terminal of the first terminal in the multi-hop relay link, wherein the first directly connected terminal is a terminal that has obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal, and the second directly connected terminal is a terminal that has not obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal.

[0341] In one embodiment, the first terminal further includes:

[0342] The fifth receiving unit 1910 is configured to receive the segmentation information of one or more fourth terminals of the multi-hop relay link.

[0343] In one embodiment, the first terminal further includes:

[0344] The fifth sending unit 1911 is configured to send second response information to one or more fourth terminals, where the second response information is used to indicate whether the first terminal accepts or rejects the segmentation information.

[0345] In an embodiment, the fifth receiving unit 1911 is further configured to receive new segmentation information reconfigured by the one or more fourth terminals for the first terminal when the second response information indicates that the first terminal rejects the segmentation information.

[0346] In one embodiment, the one or more fourth terminals include one or more terminals in the multi-hop relay link except the first terminal.

[0347] In one embodiment, the one or more fourth terminals include a first directly connected terminal and / or a second directly connected terminal of the first terminal in the multi-hop relay link, wherein the first directly connected terminal is a terminal that has obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal, and the second directly connected terminal is a terminal that has not obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal.

[0348] In one embodiment, the segmentation information is carried via PC5-RRC signaling or PC5 non-access layer signaling.

[0349] In one embodiment, in the case of unidirectional splitting, the associated hop of the sending node in the data transmission direction of the multi-hop relay link is configured with corresponding splitting information, and the associated hop is a hop from the sending node to a directly connected receiving node.

[0350] In one embodiment, in the case of bidirectional splitting, one or more associated hops of the node on the multi-hop relay link are configured with corresponding splitting information.

[0351] In one embodiment, the QoS information is divided into at least one of the following ways:

[0352] The sum of the delay information of each hop in the multi-hop relay link is less than or equal to the delay information of the multi-hop relay link as a whole;

[0353] The product of the accuracy rates of each hop in the multi-hop relay link is greater than or equal to the accuracy rate of the entire multi-hop relay link.

[0354] The first terminal 1800, 1900 of the embodiment of the present application can implement the corresponding functions of the first terminal in the aforementioned method embodiment. The processes, functions, implementation methods and beneficial effects corresponding to each module (sub-module, unit or component, etc.) in the first terminal 1800, 1900 can be found in the corresponding description in the above method embodiment, which will not be repeated here. It should be noted that the functions described in the various modules (sub-module, unit or component, etc.) in the first terminal 1800, 1900 of the embodiment of the application can be implemented by different modules (sub-module, unit or component, etc.) or by the same module (sub-module, unit or component, etc.).

[0355] Fig. 20 is a schematic block diagram of a network device 2000 according to an embodiment of the present application. The network device 2000 may include: an acquiring unit 2001, configured to acquire QoS information segmentation information of a multi-hop relay link.

[0356] Figure 21 is a schematic block diagram of a network device 2100 according to an embodiment of the present application. The first terminal may include one or more features of the aforementioned network device. The network device 2100 may include: an acquisition unit 2101 configured to acquire QoS information segmentation information of a multi-hop relay link.

[0357] In one implementation, the acquiring unit 2101 is configured to receive segmentation information of QoS information of a multi-hop relay link from the first terminal.

[0358] In one implementation, the first terminal is in a connected state.

[0359] In one embodiment, the network device further includes:

[0360] The first sending unit 2102 is configured to send a split QoS configuration to the first terminal, where the split QoS configuration includes a rule and / or a mapping relationship for split QoS information.

[0361] In one embodiment, the network device further includes:

[0362] The second sending unit 2103 is configured to send first information to the first terminal, where the first information includes a QoS segmentation parameter.

[0363] In one embodiment, the acquisition unit is configured to perform QoS segmentation on the QoS information of the multi-hop relay link to obtain the segmentation information.

[0364] In one embodiment, the acquisition unit is used to receive first information from the first terminal, and the first information is used to assist the network device in performing QoS segmentation; based on the first information and / or the segmentation QoS configuration, QoS segmentation is performed on the QoS information of the multi-hop relay link to obtain the segmentation information.

[0365] In one embodiment, the first information includes at least one of the following QoS segmentation parameters:

[0366] Number of relay hops;

[0367] Terminal measurement results;

[0368] QoS segmentation recommendation information;

[0369] RRC status;

[0370] Resource acquisition mode.

[0371] In one embodiment, the relay hop count is the number of hops between the first terminal and an end terminal in the multi-hop relay link.

[0372] In one embodiment, the measurement result of the terminal includes measurement results of a first terminal and one or more second terminals in the multi-hop relay link.

[0373] In one embodiment, the QoS segmentation recommendation information includes QoS segmentation recommendation information of the first terminal and one or more second terminals in the multi-hop relay link.

[0374] In one embodiment, the RRC state and / or resource acquisition mode includes the RRC state and / or resource acquisition mode of the first terminal and one or more second terminals in the multi-hop relay link.

[0375] In one embodiment, the one or more second terminals include one or more terminals in the multi-hop relay link except the first terminal; or, the one or more second terminals include the remaining terminals from the first terminal to the end terminal in the multi-hop relay link.

[0376] In one embodiment, the acquiring unit is further configured to acquire QoS information of the multi-hop relay link.

[0377] In one embodiment, the QoS information of the multi-hop relay link includes end-to-end QoS information, or remaining QoS information from the first terminal to the end terminal.

[0378] In one embodiment, the QoS information is divided into at least one of the following ways:

[0379] The sum of the delay information of each hop in the multi-hop relay link is less than or equal to the delay information of the multi-hop relay link as a whole;

[0380] The product of the accuracy rates of each hop in the multi-hop relay link is greater than or equal to the accuracy rate of the entire multi-hop relay link.

[0381] The network devices 2000 and 2100 of the embodiments of the present application can implement the corresponding functions of the network devices in the aforementioned method embodiments. The processes, functions, implementation methods, and beneficial effects corresponding to the various modules (sub-modules, units, or components, etc.) in the network devices 2000 and 2100 can be found in the corresponding descriptions in the aforementioned method embodiments and will not be repeated here. It should be noted that the functions described in the various modules (sub-modules, units, or components, etc.) in the network devices 2000 and 2100 of the application embodiments can be implemented by different modules (sub-modules, units, or components, etc.) or by the same module (sub-module, unit, or component, etc.).

[0382] Figure 22 is a schematic structural diagram of a communication device 2200 according to an embodiment of the present application. The communication device 2200 includes a processor 2210, which can call and run a computer program from a memory to enable the communication device 2200 to implement the method in the embodiment of the present application.

[0383] In one embodiment, the communication device 2200 may further include a memory 2220. The processor 2210 may call and execute a computer program from the memory 2220 to enable the communication device 2200 to implement the method in the embodiment of the present application.

[0384] The memory 2220 may be a separate device independent of the processor 2210 , or may be integrated into the processor 2210 .

[0385] In one embodiment, the communication device 2200 may further include a transceiver 2230 , and the processor 2210 may control the transceiver 2230 to communicate with other devices. Specifically, the transceiver 2230 may send information or data to other devices, or receive information or data sent by other devices.

[0386] The transceiver 2230 may include a transmitter and a receiver. The transceiver 2230 may further include an antenna, and the number of antennas may be one or more.

[0387] In one embodiment, the communication device 2200 may be a network device of an embodiment of the present application, and the communication device 2200 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0388] In one embodiment, the communication device 2200 may be a terminal device of an embodiment of the present application, such as a first terminal, a second terminal, a third terminal or a fourth terminal, and the communication device 2200 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0389] 23 is a schematic structural diagram of a chip 2300 according to an embodiment of the present application. The chip 2300 includes a processor 2310, which can call and execute a computer program from a memory to implement the method according to the embodiment of the present application.

[0390] In one embodiment, the chip 2300 may further include a memory 2320. The processor 2310 may call and execute a computer program from the memory 2320 to implement the method executed by the terminal device or the network device in the embodiment of the present application.

[0391] The memory 2320 may be a separate device independent of the processor 2310 or may be integrated into the processor 2310 .

[0392] In one embodiment, the chip 2300 may further include an input interface 2330. The processor 2310 may control the input interface 2330 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0393] In one embodiment, the chip 2300 may further include an output interface 2340. The processor 2310 may control the output interface 2340 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0394] In one embodiment, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0395] In one embodiment, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0396] The chips used in the network device and the terminal device may be the same chip or different chips.

[0397] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0398] The processor mentioned above may be a general-purpose processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or other programmable logic devices, transistor logic devices, discrete hardware components, etc. The general-purpose processor mentioned above may be a microprocessor or any conventional processor, etc.

[0399] The memory mentioned above may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM).

[0400] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0401] FIG24 is a schematic block diagram of a communication system 2400 according to an embodiment of the present application. The communication system 2400 includes a first terminal 2410 .

[0402] The first terminal 2410 is configured to obtain QoS information segmentation information of a multi-hop relay link, wherein the first terminal 2410 can be configured to implement the corresponding functions implemented by the first terminal in the above method.

[0403] In one embodiment, the communication system may further include a second terminal 2420 configured to receive QoS information segmentation information for a multi-hop relay link from the first terminal. For example, the first terminal and the second terminal may be in the multi-hop relay link. The second terminal 2420 may be configured to implement the corresponding functions implemented by the second terminal in the above-described method.

[0404] In one embodiment, the communication system may further include a network device 2430 configured to obtain QoS information segmentation information for the multi-hop relay link. The network device 2430 may be configured to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, these functions are not further described here.

[0405] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function in accordance with the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode to another website, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0406] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0407] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0408] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A relay communication method, comprising: The first terminal obtains segmentation information of quality of service QoS information of the multi-hop relay link.

2. The method according to claim 1, wherein: The first terminal obtains segmentation information of QoS information of the multi-hop relay link, including: The first terminal performs QoS segmentation on the QoS information of the multi-hop relay link to obtain the segmentation information.

3. The method according to claim 2, wherein: The first terminal performs QoS segmentation on the QoS information of the multi-hop relay link to obtain the segmentation information, including: The first terminal performs QoS segmentation on the QoS information of the multi-hop relay link based on the first information and / or the segmentation QoS configuration to obtain the segmentation information, where the first information includes QoS segmentation parameters.

4. The method according to claim 3, wherein: The method further comprises: The first terminal receives the split QoS configuration from the network device, where the split QoS configuration includes rules and / or mapping relationships for split QoS information.

5. The method according to any one of claims 2 to 4, wherein: The method further comprises: When the first terminal is in a connected state, the first terminal sends the segmentation information to the network device.

6. The method according to claim 1, wherein: The first terminal obtains segmentation information of QoS information of the multi-hop relay link, including: The first terminal receives the segmentation information obtained by the network device performing QoS segmentation on the QoS information of the multi-hop relay link.

7. The method according to claim 6, wherein: The method further comprises: The first terminal sends first information to the network device, where the first information is used to assist the network device in performing QoS segmentation; The first terminal receives the split information obtained by the network device performing QoS splitting on the QoS information of the multi-hop relay link, including: the first terminal receives the split information obtained by the network device performing QoS splitting based on the first information and / or split QoS configuration.

8. The method according to claim 3, 4 or 7, wherein the first information includes at least one of the following QoS segmentation parameters: Relay hop count; The measurement results of the terminal; QoS segmentation suggestion information; Radio Resource Control RRC state; Resource acquisition mode.

9. The method according to claim 8, wherein: The relay hop count includes the hop count between the first terminal and an end terminal in the multi-hop relay link.

10. The method according to claim 8 or 9, wherein: The measurement result of the terminal includes a measurement result of at least one of a first terminal and one or more second terminals in the multi-hop relay link.

11. The method according to any one of claims 8 to 10, wherein: The QoS segmentation suggestion information includes QoS segmentation suggestion information of at least one of the first terminal and one or more second terminals in the multi-hop relay link.

12. The method according to any one of claims 8 to 11, wherein: The RRC state and / or resource acquisition mode includes the RRC state and / or resource acquisition mode of the first terminal and one or more second terminals in the multi-hop relay link.

13. The method according to any one of claims 3, 4 or 7 to 12, wherein: The method further comprises: The first terminal receives the first information from a network device and / or from one or more second terminals.

14. The method according to any one of claims 10 to 13, wherein: The one or more second terminals include one or more terminals in the multi-hop relay link except the first terminal; or, the one or more second terminals include the remaining terminals from the first terminal to the end terminal in the multi-hop relay link.

15. The method according to any one of claims 1 to 14, wherein: The method further comprises: The first terminal obtains QoS information of the multi-hop relay link.

16. The method according to claim 15, wherein: The QoS information of the multi-hop relay link includes end-to-end QoS information.

17. The method according to claim 16, wherein: The first terminal is a control terminal, and the control terminal includes at least one of an end terminal, a control relay terminal, and a service terminal outside a multi-hop relay link.

18. The method according to claim 17, wherein: The end-to-end QoS information is obtained in at least one of the following ways: The control relay terminal receives the end-to-end QoS information from the end terminal; The end terminal obtains the end-to-end QoS information locally; The service terminal receives the end-to-end QoS information from the end terminal.

19. The method according to claim 17 or 18, wherein: The determination method of controlling the relay terminal includes at least one of the following: A relay terminal directly connected to an end terminal in a multi-hop relay link; The upper layer of the first terminal indicates that the first terminal is a control relay terminal; The source terminal configures the first terminal as a control relay terminal; The target terminal configures the first terminal as a control relay terminal; The remote terminal configures the first terminal as a control relay terminal; The network device configures the first terminal as a control relay terminal; The first terminal in the connected state is a control relay terminal.

20. The method according to claim 15, wherein: The QoS information of the multi-hop relay link includes remaining QoS information from the first terminal to the end terminal.

21. The method according to claim 20, wherein: The remaining QoS information is acquired by the first terminal from a first directly connected terminal, where the first directly connected terminal is a terminal that has acquired the remaining QoS information in the QoS splitting direction and is directly connected to the first terminal.

22. The method according to claim 20 or 21, wherein: The first terminal is any relay terminal in the multi-hop relay link.

23. The method according to any one of claims 1 to 22, wherein: The method further comprises: The first terminal sends the segmentation information to one or more third terminals of the multi-hop relay link.

24. The method according to claim 23, wherein: The method further comprises: The first terminal receives first response information from one or more third terminals, where the first response information is used to indicate that the one or more third terminals accept or reject the segmentation information.

25. The method according to claim 24, wherein: The method further comprises: In a case where the first response information is used to indicate that the one or more third terminals reject the segmentation information, the first terminal reconfigures new segmentation information for the one or more third terminals.

26. The method according to any one of claims 23 to 25, wherein: The one or more third terminals include one or more terminals in the multi-hop relay link except the first terminal; or, The one or more third terminals include a first directly connected terminal and / or a second directly connected terminal of the first terminal in the multi-hop relay link, wherein the first directly connected terminal is a terminal that has obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal, and the second directly connected terminal is a terminal that has not obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal.

27. The method according to any one of claims 1 to 26, wherein: The method further comprises: The first terminal receives the segmentation information of one or more fourth terminals of the multi-hop relay link.

28. The method according to claim 27, wherein: The method further comprises: The first terminal sends second response information to one or more fourth terminals, where the second response information is used to indicate that the first terminal accepts or rejects the segmentation information.

29. The method according to claim 28, wherein: The method further comprises: In a case where the second response information is used to indicate that the first terminal rejects the segmentation information, the first terminal receives new segmentation information reconfigured for the first terminal by the one or more fourth terminals.

30. The method according to any one of claims 27 to 29, wherein: The one or more fourth terminals include one or more terminals other than the first terminal in the multi-hop relay link; or, The one or more fourth terminals include a first directly connected terminal and / or a second directly connected terminal of the first terminal in the multi-hop relay link, wherein the first directly connected terminal is a terminal that has obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal, and the second directly connected terminal is a terminal that has not obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal.

31. The method according to any one of claims 23 to 30, wherein: The segmentation information is carried via PC5-RRC signaling or PC5 non-access layer signaling.

32. The method according to any one of claims 1 to 31, wherein: In the case of unidirectional splitting, the associated hop of the sending node in the data transmission direction of the multi-hop relay link is configured with corresponding splitting information, and the associated hop is a hop from the sending node to a directly connected receiving node.

33. The method according to any one of claims 1 to 31, wherein: In case of bidirectional splitting, one or more associated hops of the node on the multi-hop relay link are configured with corresponding splitting information.

34. The method according to any one of claims 1 to 33, wherein: The QoS information segmentation method includes at least one of the following: The sum of the delay information of each hop in the multi-hop relay link is less than or equal to the delay information of the multi-hop relay link as a whole; The product of the accuracy rates of each hop in the multi-hop relay link is greater than or equal to the accuracy rate of the multi-hop relay link as a whole.

35. A relay communication method, comprising: The network device obtains the segmentation information of the QoS information of the multi-hop relay link.

36. The method of claim 35, wherein: The network device obtains the QoS information segmentation information of the multi-hop relay link, including: The network device receives, from the first terminal, segmentation information of the QoS information of the multi-hop relay link.

37. The method of claim 36, wherein: The first terminal is in a connected state.

38. A method according to any one of claims 35 to 37, wherein: The method further comprises: The network device sends a split QoS configuration to the first terminal, where the split QoS configuration includes a rule and / or a mapping relationship for split QoS information.

39. The method according to any one of claims 35 to 38, wherein: The method further comprises: The network device sends first information to the first terminal, where the first information includes QoS segmentation parameters.

40. The method of claim 35, wherein: The network device obtains the QoS information segmentation information of the multi-hop relay link, including: The network device performs QoS segmentation on the QoS information of the multi-hop relay link to obtain the segmentation information.

41. The method of claim 40, wherein: The method further comprises: The network device receives first information from the first terminal, where the first information is used to assist the network device in performing QoS segmentation; The network device performs QoS segmentation on the QoS information of the multi-hop relay link to obtain the segmentation information, including: the network device performs QoS segmentation on the QoS information of the multi-hop relay link based on the first information and / or the segmentation QoS configuration to obtain the segmentation information.

42. The method according to claim 39 or 41, wherein: The first information includes at least one of the following QoS segmentation parameters: Relay hop count; The measurement results of the terminal; QoS segmentation suggestion information; RRC status; Resource acquisition mode.

43. The method of claim 42, wherein: The relay hop count includes the hop count between the first terminal and an end terminal in the multi-hop relay link.

44. The method according to claim 42 or 43, wherein: The measurement result of the terminal includes the measurement results of the first terminal and one or more second terminals in the multi-hop relay link.

45. A method according to any one of claims 42 to 44, wherein: The QoS segmentation suggestion information includes QoS segmentation suggestion information of a first terminal and one or more second terminals in the multi-hop relay link.

46. ​​A method according to any one of claims 42 to 45, wherein: The RRC state and / or resource acquisition mode includes the RRC state and / or resource acquisition mode of the first terminal and one or more second terminals in the multi-hop relay link.

47. A method according to any one of claims 44 to 46, wherein: The one or more second terminals include one or more terminals in the multi-hop relay link except the first terminal; or, the one or more second terminals include the remaining terminals from the first terminal to the end terminal in the multi-hop relay link.

48. The method according to any one of claims 35 to 47, wherein: The method further comprises: The network device obtains QoS information of the multi-hop relay link.

49. The method of claim 48, wherein: The QoS information of the multi-hop relay link includes end-to-end QoS information, or remaining QoS information from the first terminal to the end-to-end terminal.

50. The method according to any one of claims 35 to 49, wherein: The QoS information segmentation method includes at least one of the following: The sum of the delay information of each hop in the multi-hop relay link is less than or equal to the delay information of the multi-hop relay link as a whole; The product of the accuracy rates of each hop in the multi-hop relay link is greater than or equal to the accuracy rate of the multi-hop relay link as a whole.

51. A first terminal, comprising: The acquisition unit is used to acquire segmentation information of the quality of service QoS information of the multi-hop relay link.

52. The first terminal according to claim 51, wherein: The acquisition unit is used to perform QoS segmentation on the QoS information of the multi-hop relay link to obtain the segmentation information.

53. The first terminal according to claim 52, wherein: The segmentation subunit is used to perform QoS segmentation on the QoS information of the multi-hop relay link based on the first information and / or the segmentation QoS configuration to obtain the segmentation information, wherein the first information includes a QoS segmentation parameter.

54. The first terminal according to claim 53, wherein: The first terminal further includes: The first receiving unit is used to receive the split QoS configuration from the network device, where the split QoS configuration includes rules and / or mapping relationships for split QoS information.

55. The first terminal according to any one of claims 52 to 54, wherein: The first terminal further includes: The first sending unit is used to send the segmentation information to the network device when the first terminal is in a connected state.

56. The first terminal according to claim 51, wherein: The acquisition unit is used to receive the segmentation information obtained by the network device performing QoS segmentation on the QoS information of the multi-hop relay link.

57. The first terminal according to claim 56, wherein: The first terminal further includes: A second sending unit, configured to send first information to the network device, wherein the first information is used to assist the network device in performing QoS segmentation; The second receiving unit is configured to receive the segmentation information obtained by the network device performing QoS segmentation on the QoS information of the multi-hop relay link, It includes: the first terminal receives the segmentation information obtained by performing QoS segmentation based on the first information and / or segmentation QoS configuration from the network device.

58. The first terminal according to claim 53, 54 or 57, wherein the first information comprises at least one of the following QoS segmentation parameters: Relay hop count; The measurement results of the terminal; QoS segmentation suggestion information; Radio Resource Control RRC state; Resource acquisition mode.

59. The first terminal according to claim 58, wherein: The relay hop count includes the hop count between the first terminal and an end terminal in the multi-hop relay link.

60. The first terminal according to claim 58 or 59, wherein: The measurement result of the terminal includes a measurement result of at least one of a first terminal and one or more second terminals in the multi-hop relay link.

61. The first terminal according to any one of claims 58 to 60, wherein: The QoS segmentation suggestion information includes QoS segmentation suggestion information of at least one of the first terminal and one or more second terminals in the multi-hop relay link.

62. The first terminal according to any one of claims 58 to 61, wherein: The RRC state and / or resource acquisition mode includes the RRC state and / or resource acquisition mode of the first terminal and one or more second terminals in the multi-hop relay link.

63. The first terminal according to any one of claims 53, 54 or 57 to 62, wherein: The first terminal further includes: The third receiving unit is configured to receive the first information from a network device and / or from one or more second terminals.

64. The first terminal according to any one of claims 60 to 63, wherein: The one or more second terminals include one or more terminals in the multi-hop relay link except the first terminal; or, the one or more second terminals include the remaining terminals from the first terminal to the end terminal in the multi-hop relay link.

65. The first terminal according to any one of claims 51 to 64, wherein: The acquisition unit is further used to acquire QoS information of the multi-hop relay link.

66. The first terminal according to claim 65, wherein: The QoS information of the multi-hop relay link includes end-to-end QoS information.

67. The first terminal according to claim 66, wherein: The first terminal is a control terminal, and the control terminal includes at least one of an end terminal, a control relay terminal, and a service terminal outside a multi-hop relay link.

68. The first terminal according to claim 67, wherein: The end-to-end QoS information is obtained in at least one of the following ways: The control relay terminal receives the end-to-end QoS information from the end terminal; The end terminal obtains the end-to-end QoS information locally; The service terminal receives the end-to-end QoS information from the end terminal.

69. The first terminal according to claim 67 or 68, wherein: The determination method of controlling the relay terminal includes at least one of the following: A relay terminal directly connected to an end terminal in a multi-hop relay link; The upper layer of the first terminal indicates that the first terminal is a control relay terminal; The source terminal configures the first terminal as a control relay terminal; The target terminal configures the first terminal as a control relay terminal; The remote terminal configures the first terminal as a control relay terminal; The network device configures the first terminal as a control relay terminal; The first terminal in the connected state is a control relay terminal.

70. The first terminal according to claim 65, wherein: The QoS information of the multi-hop relay link includes remaining QoS information from the first terminal to the end terminal.

71. The first terminal according to claim 70, wherein: The remaining QoS information is acquired by the first terminal from a first directly connected terminal, where the first directly connected terminal is a terminal that has acquired the remaining QoS information in the QoS splitting direction and is directly connected to the first terminal.

72. The first terminal according to claim 70 or 71, wherein: The first terminal is any relay terminal in the multi-hop relay link.

73. The first terminal according to any one of claims 51 to 72, wherein: The first terminal further includes: The third sending unit is used to send the segmentation information to one or more third terminals of the multi-hop relay link.

74. The first terminal according to claim 73, wherein: The first terminal further includes: The fourth receiving unit is used to receive first response information from one or more third terminals, where the first response information is used to indicate that the one or more third terminals accept or reject the segmentation information.

75. The first terminal according to claim 74, wherein: The first terminal further includes: The fourth sending unit is further configured to reconfigure new segmentation information for the one or more third terminals when the first response information is used to indicate that the one or more third terminals reject the segmentation information.

76. The first terminal according to any one of claims 73 to 75, wherein: The one or more third terminals include one or more terminals in the multi-hop relay link except the first terminal; or, The one or more third terminals include a first directly connected terminal and / or a second directly connected terminal of the first terminal in the multi-hop relay link, wherein the first directly connected terminal is a terminal that has obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal, and the second directly connected terminal is a terminal that has not obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal.

77. The first terminal according to any one of claims 51 to 76, wherein: The first terminal further includes: The fifth receiving unit is used to receive the segmentation information of one or more fourth terminals of the multi-hop relay link.

78. The first terminal according to claim 77, wherein: The first terminal further includes: The fifth sending unit is used to send second response information to one or more fourth terminals, where the second response information is used to indicate that the first terminal accepts or rejects the segmentation information.

79. The first terminal according to claim 78, wherein: The first terminal further includes: The fifth receiving unit is further configured to receive new segmentation information reconfigured by the one or more fourth terminals for the first terminal when the second response information is used to indicate that the first terminal rejects the segmentation information.

80. The first terminal according to any one of claims 77 to 79, wherein: The one or more fourth terminals include one or more terminals other than the first terminal in the multi-hop relay link; or, The one or more fourth terminals include a first directly connected terminal and / or a second directly connected terminal of the first terminal in the multi-hop relay link, wherein the first directly connected terminal is a terminal that has obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal, and the second directly connected terminal is a terminal that has not obtained the remaining QoS information in the QoS split direction and is directly connected to the first terminal.

81. The first terminal according to any one of claims 23 to 80, wherein: The segmentation information is carried via PC5-RRC signaling or PC5 non-access layer signaling.

82. The first terminal according to any one of claims 51 to 81, wherein: In the case of unidirectional splitting, the associated hop of the sending node in the data transmission direction of the multi-hop relay link is configured with corresponding splitting information, and the associated hop is a hop from the sending node to a directly connected receiving node.

83. The first terminal according to any one of claims 51 to 81, wherein: In case of bidirectional splitting, one or more associated hops of the node on the multi-hop relay link are configured with corresponding splitting information.

84. The first terminal according to any one of claims 51 to 83, wherein: The QoS information segmentation method includes at least one of the following: The sum of the delay information of each hop in the multi-hop relay link is less than or equal to the delay information of the multi-hop relay link as a whole; The product of the accuracy rates of each hop in the multi-hop relay link is greater than or equal to the accuracy rate of the multi-hop relay link as a whole.

85. A network device comprising: The acquisition unit is used to acquire the segmentation information of the QoS information of the multi-hop relay link.

86. The network device according to claim 85, wherein: The acquisition unit is used to receive segmentation information of QoS information of the multi-hop relay link from the first terminal.

87. The network device according to claim 86, wherein: The first terminal is in a connected state.

88. The network device according to any one of claims 85 to 87, wherein: The network device also includes: The first sending unit is used to send a split QoS configuration to the first terminal, where the split QoS configuration includes a rule and / or a mapping relationship for split QoS information.

89. The network device according to any one of claims 85 to 88, wherein: The network device also includes: The second sending unit is used to send first information to the first terminal, where the first information includes QoS segmentation parameters.

90. The network device according to claim 85, wherein: The acquisition unit is used to perform QoS segmentation on the QoS information of the multi-hop relay link to obtain the segmentation information.

91. The network device according to claim 90, wherein: The acquisition unit is used to receive first information from the first terminal, where the first information is used to assist the network device in performing QoS segmentation; based on the first information and / or the segmentation QoS configuration, QoS segmentation is performed on the QoS information of the multi-hop relay link to obtain the segmentation information.

92. The network device according to claim 89 or 91, wherein: The first information includes at least one of the following QoS segmentation parameters: Relay hop count; The measurement results of the terminal; QoS segmentation suggestion information; RRC status; Resource acquisition mode.

93. The network device according to claim 92, wherein: The relay hop count is the number of hops between the first terminal and an end terminal in the multi-hop relay link.

94. The network device according to claim 92 or 93, wherein: The measurement result of the terminal includes the measurement results of the first terminal and one or more second terminals in the multi-hop relay link.

95. The network device according to any one of claims 92 to 94, wherein: The QoS segmentation suggestion information includes QoS segmentation suggestion information of a first terminal and one or more second terminals in the multi-hop relay link.

96. The network device according to any one of claims 92 to 95, wherein: The RRC state and / or resource acquisition mode includes the RRC state and / or resource acquisition mode of the first terminal and one or more second terminals in the multi-hop relay link.

97. The network device according to any one of claims 94 to 96, wherein: The one or more second terminals include one or more terminals in the multi-hop relay link except the first terminal; or, the one or more second terminals include the remaining terminals from the first terminal to the end terminal in the multi-hop relay link.

98. The network device according to any one of claims 85 to 97, wherein: The acquisition unit is further used to acquire QoS information of the multi-hop relay link.

99. The network device according to claim 98, wherein: The QoS information of the multi-hop relay link includes end-to-end QoS information, or remaining QoS information from the first terminal to the end-to-end terminal.

100. The network device according to any one of claims 85 to 99, wherein: The QoS information segmentation method includes at least one of the following: The sum of the delay information of each hop in the multi-hop relay link is less than or equal to the delay information of the multi-hop relay link as a whole; The product of the accuracy rates of each hop in the multi-hop relay link is greater than or equal to the accuracy rate of the multi-hop relay link as a whole.

101. A terminal device, comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory so that the terminal device executes the method as claimed in any one of claims 1 to 34.

102. A network device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory so that the network device executes the method as claimed in any one of claims 35 to 50.

103. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 34 and any one of claims 35 to 50.

104. A computer-readable storage medium, used for storing a computer program, which, when executed by a device, causes the device to perform the method as claimed in any one of claims 1 to 34 and any one of claims 35 to 50.

105. A computer program product comprising computer program instructions, the computer program instructions causing a computer to execute the method of any one of claims 1 to 34, 35 to 50.

106. A computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 34, 35 to 50.

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