Relay communication method, apparatus, and terminal

Abstract

The application discloses a relay communication method, device and terminal, and belongs to the field of mobile communication. The relay communication method comprises the following steps: a first device acquires first information, wherein the first information comprises configuration information for establishing a bearer of a first communication; the first device establishes the bearer of the first communication according to the first information and a second device, and communicates; wherein the first device is one of a source terminal and a destination terminal, the second device is the other one of the source terminal and the destination terminal, the first communication is a sidelink relay communication, and the first information comprises at least one of the following: the first configuration information is end-to-end configuration information in the configuration information of the bearer; the second configuration information is hop-to-hop configuration information corresponding to a first target hop between the first device and a third device in the configuration information of the bearer, and the third device is a relay device connected with the first device in the first communication.

Description

Technical Field

[0001] This application belongs to the field of mobile communication technology, specifically relating to a relay communication method, apparatus, and terminal. Background Technology

[0002] In a UE-to-UE (U2U) sidelink relay communication scenario, there are two remote UEs at both ends and at least one relay UE in the middle. In this scenario, the two remote UEs (i.e., source terminal remote UE1 and destination terminal remote UE2) communicate through a sidelink with the relay UE. The relay UE forwards the data transmission between remote UE1 and remote UE2, and the relay UE acts as a data relay.

[0003] In the U2Usidelink relay scenario, it is necessary to determine the configuration method of the secondary link relay communication bearer on each terminal. Summary of the Invention

[0004] This application provides a relay communication method, apparatus, and terminal, which can realize the configuration of the bearer of the secondary link relay communication in each terminal in a U2U sidelink relay scenario.

[0005] In a first aspect, a relay communication method is provided, applied to a first device, the method comprising:

[0006] The first device acquires first information, which includes configuration information for a bearer used to establish the first communication;

[0007] The first device establishes a bearer for the first communication with the second device based on the first information, and then conducts communication.

[0008] Wherein, the first device is one of the source terminal and the destination terminal of the first communication, the second device is the other of the source terminal and the destination terminal of the first communication, the first communication is a secondary link relay communication, and the first information includes at least one of the following:

[0009] The first configuration information is the end-to-end configuration information in the carried configuration information;

[0010] The second configuration information is the hop-to-hop configuration information corresponding to the first target hop between the first device and the third device in the configuration information carried, and the third device is the relay device connected to the first device in the first communication.

[0011] Secondly, a relay communication device is provided, comprising:

[0012] The first transmission module is used to acquire first information, the first information including configuration information for a bearer used to establish the first communication;

[0013] The first execution module is used to establish the bearer of the first communication with the second device based on the first information, and to conduct communication.

[0014] Wherein, the relay communication device is one of the source terminal and the destination terminal of the first communication, the second device is the other of the source terminal and the destination terminal of the first communication, the first communication is a secondary link relay communication, and the first information includes at least one of the following:

[0015] The first configuration information is the end-to-end configuration information in the carried configuration information;

[0016] The second configuration information is the hop-to-hop configuration information corresponding to the first target hop between the relay communication device and the third device in the configuration information carried, and the third device is the relay device connected to the first device in the first communication.

[0017] Thirdly, a relay communication method is provided for application to a fourth device, the method comprising:

[0018] The fourth device acquires third information, which includes configuration information related to the fourth device in the configuration information of the bearer used to establish the first communication;

[0019] The fourth device establishes the hop-to-hop secondary link bearer of the second target hop and / or the hop-to-hop secondary link bearer of the third target hop based on the third information;

[0020] Wherein, the fourth device is one of the relay devices in the first communication; the second target hop is a hop between the fourth device and the upstream device; the third target hop is a hop between the fourth device and the downstream device; the upstream device is either a relay device or a first device in the first communication; the downstream device is either a relay device or a second device in the first communication; the first device is either the source terminal or the destination terminal in the first communication; the second device is either the source terminal or the destination terminal in the first communication; the first communication is a secondary link relay communication; and the third information includes at least one of the following:

[0021] The third configuration information is the configuration information of the second target hop in the configuration information carried;

[0022] The fourth configuration information is the configuration information of the third target hop in the configuration information carried.

[0023] Fourthly, a relay communication device is provided, comprising:

[0024] The second transmission module is used to acquire third information, which includes configuration information related to the relay communication device in the configuration information of the bearer used to establish the first communication.

[0025] The second execution module is used to establish the hop-to-hop secondary link bearer of the second target hop and / or the hop-to-hop secondary link bearer of the third target hop according to the third information;

[0026] Wherein, the relay communication device is one of the relay devices in the first communication; the second target hop is a hop between the relay communication device and the upstream device; the third target hop is a hop between the relay communication device and the downstream device; the upstream device is either a relay device or a first device in the first communication; the downstream device is either a relay device or a second device in the first communication; the first device is either a source terminal or a destination terminal in the first communication; the second device is either a source terminal or a destination terminal in the first communication; the first communication is a secondary link relay communication; and the third information includes at least one of the following:

[0027] The third configuration information is the configuration information of the second target hop in the configuration information carried;

[0028] The fourth configuration information is the configuration information of the third target hop in the configuration information carried.

[0029] Fifthly, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0030] In a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to establish a bearer for the first communication with a second device based on the first information and to perform communication, and the communication interface is configured to acquire the first information, the first information including configuration information for establishing the bearer for the first communication.

[0031] In a seventh aspect, another terminal is provided, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the third aspect.

[0032] Eighthly, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to establish a hop-to-hop secondary link bearer of a second target hop and / or a hop-to-hop secondary link bearer of a third target hop according to the third information, and the communication interface is configured to acquire the third information, the third information including configuration information related to the fourth device in configuration information for establishing a bearer of a first communication.

[0033] A ninth aspect provides a relay communication system, comprising: a first device and a fourth device, wherein the first device is configured to perform the steps of the relay communication method as described in the first aspect, and the fourth device is configured to perform the steps of the relay communication method as described in the third aspect.

[0034] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the third aspect.

[0035] Eleventhly, a chip is provided, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the third aspect.

[0036] In a twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the relay communication method as described in the first aspect or the third aspect.

[0037] In this embodiment of the application, by obtaining first information, which includes configuration information for establishing a bearer for first communication; and then establishing a bearer for the first communication with a second device based on the first information, and conducting communication; wherein, the first information includes first configuration information for establishing an end-to-end secondary link bearer and / or second configuration information for establishing a hop-to-hop secondary link bearer, thereby enabling rapid configuration of the bearer for secondary link relay communication to realize service data transmission on U2U paths or even multi-hop U2U paths. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of a wireless communication system applicable to the embodiments of this application;

[0039] Figure 2 This is a schematic diagram of the structure of a relay communication system provided in an embodiment of this application;

[0040] Figure 3This is a flowchart illustrating another relay communication method provided in an embodiment of this application;

[0041] Figure 4 This is a flowchart illustrating another relay communication method provided in an embodiment of this application;

[0042] Figure 5 This is a flowchart illustrating another relay communication method provided in an embodiment of this application;

[0043] Figure 6 This is a flowchart illustrating another relay communication method provided in an embodiment of this application;

[0044] Figure 7 This is a flowchart illustrating another relay communication method provided in an embodiment of this application;

[0045] Figure 8 This is a flowchart illustrating another relay communication method provided in an embodiment of this application;

[0046] Figure 9 This is a flowchart illustrating another relay communication method provided in an embodiment of this application;

[0047] Figure 10 This is a flowchart illustrating another relay communication method provided in an embodiment of this application;

[0048] Figure 11 This is a schematic diagram of the structure of a relay communication device provided in an embodiment of this application;

[0049] Figure 12 This is a flowchart illustrating another relay communication method provided in an embodiment of this application;

[0050] Figure 13 This is a schematic diagram of another relay communication device provided in the embodiments of this application;

[0051] Figure 14 This is a schematic diagram of a communication device structure provided in an embodiment of this application;

[0052] Figure 15 A schematic diagram of the structure of a terminal according to an embodiment of this application;

[0053] Figure 16 A schematic diagram of the structure of another terminal to implement the embodiments of this application. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0055] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0056] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description; however, these technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0057] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. Terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of terminal 11 is not limited in this embodiment. Network-side equipment 12 may include access network equipment or core network equipment. Access network equipment 12 may also be referred to as radio access network equipment, radio access network (RAN), radio access network function, or radio access network unit. Access network equipment 12 may include base stations, WLAN access points, or WiFi nodes, etc. Base stations may be referred to as Node B, evolved Node B (eNB), access point, base transceiver station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B node, home evolved B node, Transmitting Receiving Point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only a base station in an NR system is used as an example for description, and the specific type of base station is not limited.Core network equipment may include, but is not limited to, at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), and Binding Support. Core network functions (BSF), application functions (AF), etc. It should be noted that this application embodiment only uses core network equipment in the NR system as an example for description, and does not limit the specific type of core network equipment.

[0058] The relay communication method, apparatus, and terminal provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0059] like Figure 2 and Figure 3 As shown, this application embodiment provides a relay communication method, the execution subject of which is a first device 21; in other words, the method can be executed by software or hardware installed on the first device. The method includes:

[0060] S110, The first device acquires first information, the first information including configuration information for a bearer used to establish the first communication.

[0061] The first communication is a secondary link relay communication, such as... Figure 2 As shown, the first communication refers to the U2U secondary link relay communication between the first device 21 and the second device 22. Data is relayed between the first device 21 and the second device 22 through N relay devices 23, where N is a positive integer. Data transmission between the first device 21 and the relay devices 23, between each relay device 23, and between the relay devices 23 and the second device 22 is all conducted through the secondary link interface (PC5).

[0062] The first device 21 can be one of the source terminal and the destination terminal of the first communication, the second device 22 can be the other of the source terminal and the destination terminal of the first communication, and the relay device 23 can be a relay UE between the source terminal and the destination terminal in the first communication.

[0063] The source terminal can be either the service initiator device of the first communication or the service stream sender device during the service transmission process of the first communication. Correspondingly, the destination terminal can be either the service receiver device of the first communication or the service stream receiver device during the service transmission process of the first communication.

[0064] The configuration information for the bearer used to establish the first communication can be determined, configured, and / or maintained by the first device 21. The first device 21 can be configured according to actual needs; in one embodiment, the first device can be one of the following:

[0065] The service initiating device for the secondary link relay communication;

[0066] The service flow sending device of the secondary link relay communication;

[0067] The secondary link relay communication service flow receiving device;

[0068] One of the source and destination terminals in the secondary link relay communication.

[0069] In one implementation, for each service, or for bidirectional services, the bearer configuration information can be determined by the initiating device of the service flow, and the configuration and / or maintenance process can be led. For example, in a unidirectional service, where transmission occurs from remote UE1 to remote UE2, the bearer configuration information corresponding to this unidirectional service can be determined by remote UE1 as the first device 21, and configured and / or maintained for the peer remote UE2 through the secondary link radio resource control (PC5 RRC) process. As another example, in a bidirectional service, consisting of two-way service flows, the bearer configuration information for the service flow sent from remote UE1 to remote UE2 can be determined by remote UE1, which also leads the configuration and / or maintenance process. Conversely, the bearer configuration information for the service flow sent from remote UE2 to remote UE1 can be determined by remote UE2, which also leads the configuration and / or maintenance process. The advantage of this approach is that, for each service or service flow in each direction, the remote UE that generates the service is the most knowledgeable, thus enabling precise configuration and / or maintenance processes.

[0070] In another implementation, for each service, or for unidirectional services, the service initiating device can determine the configuration information carried and perform configuration and / or maintenance. For example, in a unidirectional service, the service initiating remote UE1 determines and leads the configuration and / or maintenance process of the carried configuration information; similarly, in a bidirectional service, the service initiating remote UE can determine and lead the configuration and / or maintenance process of the carried configuration information, regardless of the service flow direction; all directions are determined and led by remote UE1. If a bidirectional service is initiated first by remote UE1, although remote UE2 may also have a service flow in the opposite direction, only remote UE1 determines the carried configuration information and leads the configuration and / or maintenance process. The advantage of this approach is that it avoids configuration conflicts or failures, reduces the signaling latency in U2U scenarios involving relay UEs or even multiple relay UEs, and improves configuration and control efficiency.

[0071] In another implementation, for each service, whether one-way or two-way, one of the source and destination terminals, determined according to regulations, decides the configuration information to be carried and leads the configuration and / or maintenance process. These regulations can be set according to actual needs.

[0072] In one embodiment, a default rule can be adopted to determine the configuration and / or maintenance process, for example, the UE that first initiates the secondary link communication establishment request; for example, if remote UE1 initiates the communication request (Direct Communication Request, DCR) first, then remote UE1 will determine and lead the configuration and / or maintenance process.

[0073] In another embodiment, the configuration and / or maintenance process can be determined and led by the actual service provider UE, depending on the service situation; for example, when data is transmitted between two UEs, the configuration and / or maintenance process is determined and led by the data provider UE.

[0074] In another embodiment, one of the UEs may be elected to decide and lead the configuration and / or maintenance process based on the negotiation between the two UEs. For example, during the interaction between the two UEs in PC5-S or PC5 RRC, they may exchange some information or preferences regarding the decision of control. If one UE is in the Out Of Coverage (OOC) state, while the other UE is in the network coverage and in the RRC connected state, the second UE can obviously decide and lead the configuration and / or maintenance process because it can get more assistance from the network side.

[0075] It should be noted that if the first device that determines and leads the configuration and / or maintenance process of the carried configuration information is not the source terminal, then the first device needs to first obtain the service-related information and / or link-related information of the first communication. Specifically, it can obtain the information from the source terminal through the secondary link radio resource control process, the PC5-S process, or the service layer.

[0076] The first information includes at least one of the following:

[0077] The first configuration information is the end-to-end configuration information in the carried configuration information;

[0078] The second configuration information is the hop-to-hop configuration information corresponding to the first target hop between the first device and the third device in the configuration information carried, and the third device is the relay device connected to the first device in the first communication.

[0079] When the first device is the source terminal, the first target hop is the hop from the source terminal to the first relay terminal directly connected to it in the N+1 hops between the source terminal and the destination terminal, i.e., the first hop. When the first device is the destination terminal, the first target hop is the hop from the destination terminal to the Nth relay terminal directly connected to it, i.e., the N+1th hop.

[0080] In one implementation, the first communication is one of the following:

[0081] Layer 2 (L2) secondary link relay communication, i.e. L2 U2U scenario.

[0082] Layer 3 (L3) secondary link relay communication, i.e. L3 U2U scenario.

[0083] In the case of the first communication being an L2 U2U scenario, the first communication needs to establish an end-to-end sidelink bearer (E2ESLRB) and hop-by-hop sidelink bearers corresponding to each hop between the first device and the second device. These can also be called radio link control bearers (RLCBearers) or radio link control channels (RLCChannels). For simplicity, RLCBearers will be used as an example in the following embodiments. Accordingly, the bearer configuration information of the first communication may include first configuration information corresponding to E2ESLRB and second configuration information corresponding to RLCBearer.

[0084] The first configuration information mainly includes configuration information for the Packet Data Convergence Protocol layer (PDCP layer) and higher layers, including at least one of the following:

[0085] Configuration information for the packet data aggregation protocol layer;

[0086] Configuration information for the Service Data Adaptation Protocol layer (SDAP layer);

[0087] The identifier (E2ESLRBID) carried by the end-to-end secondary link.

[0088] The second configuration information in an L2U2U scenario includes at least one of the following:

[0089] Configuration information for the Radio Link Control Layer (RLClayer);

[0090] Configuration information for the Medium Access Control layer (MAClayer);

[0091] Configuration information for the physical layer (PHY layer).

[0092] In the case of the first communication being an L3 U2U scenario, since each hop link between the first device and the second device is a Layer 3 link, the first communication needs to establish a secondary link bearer for each hop link. The bearer configuration information of the first communication may include second configuration information corresponding to the secondary link bearer of each hop link.

[0093] The second configuration information in the L3 U2U scenario includes at least one of the following:

[0094] Service data adapts to the configuration information of the protocol layer;

[0095] Configuration information for the packet data aggregation protocol layer;

[0096] Configuration information for the wireless link control layer;

[0097] Configuration information for the media access control layer;

[0098] Configuration information for the physical layer.

[0099] S120. The first device establishes a bearer for the first communication with the second device based on the first information, and then conducts communication.

[0100] After determining the configuration information of the bearer, the first device can configure the corresponding configuration information to the second device and the relay device to establish the bearer for the first communication, and after successful configuration, it can realize secondary link relay communication with the second device.

[0101] In an L2 U2U scenario, the first device can send the first configuration information to the second device through the secondary link radio resource control procedure to establish an E2ESLRB; the first device can also send the second configuration information to the adjacent relay device through the secondary link radio resource control procedure to establish an RCL bearer with the adjacent relay device.

[0102] In an L3 U2U scenario, the first device can send the service-related information and / or link-related information of the first communication to the second device and each relay device. For example, it can send the service-related information and / or link-related information corresponding to each hop through signaling in the PC5-S process. The sending end of each hop can obtain the corresponding configuration information based on the corresponding service-related information and / or link-related information and send it to the other end to establish the secondary link bearer for each hop.

[0103] As can be seen from the above embodiments, for the first communication, one terminal can determine the configuration information of the bearer and lead the configuration and / or maintenance process, or two terminals can determine the configuration information of different directions of the bearer and lead the configuration and / or maintenance process of that direction, depending on the different directions of the service flow. Furthermore, the first configuration information and the second configuration information can be determined and led by the same terminal or different terminals, respectively. However, for simplicity, the following embodiments will use the example of one terminal determining the configuration information of the bearer and leading the configuration and / or maintenance process.

[0104] As can be seen from the technical solutions of the above embodiments, the embodiments of this application obtain first information, which includes configuration information for establishing a bearer for first communication; then establish the bearer for the first communication with a second device based on the first information, and perform communication; wherein, the first information includes first configuration information for establishing an end-to-end secondary link bearer and / or second configuration information for establishing a hop-to-hop secondary link bearer, thereby enabling rapid configuration of the bearer for secondary link relay communication to realize service data transmission on U2U paths or even multi-hop U2U paths.

[0105] Based on the above embodiments, further, as Figure 4 As shown, step S110 includes:

[0106] S111, the first device receives a first message from the network-side device and obtains the first information based on the first message;

[0107] The first message includes at least one of the following:

[0108] The first configuration information and / or the second configuration information;

[0109] A configuration table, which is used to look up the first configuration information and / or the second configuration information, by considering all possible business scenarios in advance and providing the corresponding first configuration information and / or the second configuration information;

[0110] The mapping relationship between the first configuration information and the second configuration information.

[0111] Depending on the network status of the first device, the first message may be at least one of the following: dedicated signaling, broadcast signaling, system information block (SIB) signaling, or pre-configured signaling.

[0112] In one implementation, such as Figure 5 As shown, step S111 includes:

[0113] S113. When the first device is in the Radio Resource Control (RRC) Active state, the first device receives the first signaling from the network-side device. The first signaling includes the first configuration information and / or the second configuration information. The first signaling can be dedicated signaling, that is, the network-side device directly sends the first configuration information and / or the second configuration information to the first device.

[0114] The first signaling may also include a mapping relationship between the first configuration information and the second configuration information.

[0115] In order to obtain accurate first configuration information and / or second configuration information from the network-side device, after receiving the first signaling from the network-side device, the method further includes:

[0116] S112, the first device sends second information of the first communication to the network-side device, the second information including service-related information and / or link-related information of the first communication.

[0117] In one implementation, the service-related information of the first communication includes at least one of the following:

[0118] End-to-end Quality of Service (QoS) parameter information;

[0119] QoS parameter information for hop to hop.

[0120] In one implementation, the hop-to-hop QoS parameter information includes at least one of the following:

[0121] QoS parameter information for this hop;

[0122] QoS parameter information that has already been allocated or occupied;

[0123] The remaining QoS parameter information besides the QoS information that has already been allocated or occupied;

[0124] QoS segmentation information.

[0125] The QoS segmentation information is used to segment QoS parameters. Based on end-to-end QoS parameter information, hop-to-hop QoS parameter information, already allocated or occupied QoS parameter information, and the characteristics of the current hop, the QoS parameter value of the current hop is determined.

[0126] Let's take Packet Delay Budget (PDB) as an example. Suppose the end-to-end PDB requirement for a secondary link service is 100ms. When transmitting through a relay UE, a hop-to-hop PDB parameter of 50ms can be used between remoteUE1 and relay UE, and the remaining hop-to-hop PDB parameter of 50ms can be used between relay UE and remote UE2, or a 40ms and 60ms segment can be used between the two. Alternatively, when transmitting through two relay UEs, relay UE1 and relay UE2, the PDB parameter can be 30ms between remote UE1 and relay UE1, 35ms between relay UE1 and relay UE2, and 35ms between relay UE2 and remote UE2 (totaling equals the end-to-end PDB of 100ms), or the three segments can be 20ms, 40ms, and 40ms respectively, etc. Each hop can only determine the PDB of that hop, and by referring to the end-to-end PDB and the PDBs that have been occupied by other hops or the remaining PDBs, the PDB parameters of that hop are obtained.

[0127] In one implementation, the link-related information of the first communication includes at least one of the following:

[0128] The first relay indication information is used to indicate whether layer 2 or layer 3 end-to-end relay communication is used;

[0129] Information on relay links from one hop to another;

[0130] The relay link information for hop-to-hop includes at least one of the following:

[0131] Total number of hops;

[0132] The sequence number of this jump.

[0133] In another implementation, such as Figure 6 As shown, step S111 includes:

[0134] S114. When the first device is in the RRC Idle state or inactive state, the first device receives a second signaling from the network side device. The second signaling includes the configuration table, and the configuration table includes the mapping relationship between the first information and the second information.

[0135] S115. The first device retrieves the first information from the configuration table based on the second information of the first communication. The second information includes service-related information and / or link-related information of the first communication. The second signaling can be broadcast signaling or SIB.

[0136] The second signaling may also include a mapping relationship between the first configuration information and the second configuration information.

[0137] In another implementation, such as Figure 7 As shown, step S111 includes:

[0138] S116. When the first device is in OOC, the first device obtains pre-configuration information from the third signaling. The pre-configuration information includes the configuration table, which includes the mapping relationship between the first information and the second information. The third signaling can be pre-configuration signaling, which can be sent by the network-side device to the first device when the first device is in RRC connected state, inactive state or idle state.

[0139] S117. The first device searches for the first information in the configuration table based on the second information of the first communication. The second information includes service-related information and / or link-related information of the first communication.

[0140] The third signaling may also include the mapping relationship between the first configuration information and the second configuration information.

[0141] In one implementation, step S115 or S117 includes at least one of the following:

[0142] The first device retrieves the first configuration information from the configuration table based on the end-to-end related information in the second information;

[0143] The first device retrieves the second configuration information from the configuration table based on the end-to-end related information and / or hop-to-hop related information in the second information;

[0144] The first device retrieves the second configuration information from the configuration table based on the end-to-end related information in the second information and / or the mapping relationship between the first configuration information and the second configuration information.

[0145] The end-to-end related information in the second information may include at least one of the following:

[0146] End-to-end QoS parameter information, peer device information, first relay indication information, hop-to-hop relay link information, total number of hops, etc.

[0147] The jump-to-jump related information in the second information may include at least one of the following:

[0148] The QoS parameter information for the next hop, the QoS parameter information for the current hop, the QoS parameter information that has been allocated or occupied, the remaining QoS parameter information other than the QoS information that has been allocated or occupied, QoS segmentation information, and the sequence number of the current hop, etc.

[0149] In one implementation, the configuration table used to locate the first configuration information and the second configuration information may be the same configuration table, or it may include both a first configuration table and a second configuration table. The first configuration table is used to locate the first configuration information, and the second configuration table is used to locate the second configuration information. The first device can obtain the first configuration table and the second configuration table from the network-side device, and then locate the first configuration information from the first configuration table based on the end-to-end related information in the second information, and locate the second configuration information from the second configuration table based on the end-to-end related information and / or hop-to-hop related information in the second information.

[0150] For the sake of simplicity, the following embodiments will use the first configuration table and the second configuration table as examples for illustration.

[0151] As can be seen from the technical solutions of the above embodiments, the embodiments of this application can flexibly realize the bearer configuration of secondary link relay communication by using different methods to obtain the first configuration information and / or the second configuration information when the first device is in different network states.

[0152] Based on the above embodiments, such as Figure 8 As shown, the configuration and / or maintenance process for the first configuration information in an L2 U2U scenario includes the following steps.

[0153] S810, the first device obtains the first configuration information.

[0154] Obtain the first configuration information based on the network status of the first device:

[0155] When the first device is in the RRC active state, the first configuration information is obtained from the network-side device through steps S112-S113;

[0156] When the first device is in the RRC idle state or inactive state, the first configuration table is obtained from the second signaling received from the network-side device through steps S114-S115, and the first configuration information is found from the first configuration table according to the end-to-end related information in the second information.

[0157] When the first device is outside the network coverage area, the first configuration table is obtained from the third signaling through steps S116-S117, and the first configuration information is found from the first configuration table according to the end-to-end related information in the second information.

[0158] It should be noted that since both the second and third signaling are common signaling, the first configuration tables in the second and third signaling need to consider all possible service scenarios and provide a first configuration table corresponding to each service scenario, such as direct transmission, one-hop relay transmission, two-hop relay transmission, or N-hop relay transmission, etc. Therefore, network-side devices can be configured for different scenarios in the following ways:

[0159] In one embodiment, regardless of the business scenario, the same first configuration table is used for all scenarios. Then, based on the business-related information in the end-to-end related information, such as the end-to-end QoS parameter information, the corresponding first configuration information is found from the first configuration table, which is simple to process and has low signaling overhead.

[0160] In another embodiment, different first configuration tables are used to distinguish different business scenarios. For example, first configuration table A1 is used for direct transmission; first configuration table A2 is used for U2U relay communication via relay; or for U2U relay communication via relay, the corresponding first configuration table is used for different total hop counts; or different scenarios are grouped, and each scenario group corresponds to a different first configuration table. For example, scenario group 1 corresponds to first configuration table A1, scenario group 2 corresponds to first configuration table A2, ..., scenario group m corresponds to first configuration table Am.

[0161] In another implementation, the configuration parameters in the first configuration information are divided into common parameters and distinguishable parameters. Common parameters are identical and can be configured using a common first configuration table A0. Distinguished parameters can be configured separately for different scenarios or different scenario groups. For example, the first configuration information includes *a* common parameters and *b* distinguishable parameters. The *a* common parameters are universal across all scenarios, and can be found in the common first configuration table A0. The *b* distinguishable parameters correspond to different first configuration tables for different scenarios or scenario groups. For a specific scenario, the first device can first look up the *a* parameters from the common first configuration table A0 based on the business-related information in the end-to-end related information, then determine the corresponding first configuration table based on the scenario group to obtain the corresponding *b* distinguishable parameters. Finally, the *a* + *b* parameters are combined to obtain the complete first configuration information.

[0162] Through the above process, the first device obtains the first configuration information for the first communication, and then configures the first configuration information to the second device. Step S120 includes:

[0163] Step S820: The first device sends a second message to the second device through the PC5 RRC process, the second message including the first configuration information.

[0164] Since the first and second devices cannot communicate directly, a relay device is needed for relaying. The data relayed by the relay device is an E2E Layer 2 Protocol Data Unit (PDU), which is generally an encrypted Packet Data Convergence Protocol Data Unit (PDCP PDU). The relay device cannot read the relayed data to ensure security and privacy requirements.

[0165] Specifically, the PC5 RRC process can be sent to the second device via a Sidelink RRC Reconfiguration process.

[0166] In one implementation, if the first device receives a Reconfiguration Complete message response from the second device, it determines that the end-to-end sublink bearer configuration process is complete.

[0167] In another implementation, if the first device receives a reconfiguration failure message from the second device, it determines that the configuration has failed and needs to revert to the previous configuration. The next configuration attempt will then proceed based on the failure reason or failure indication information. The failure reason could be a configuration conflict between the two terminals, or a configuration failure on the second terminal.

[0168] As can be seen from the technical solutions of the above embodiments, the embodiments of this application achieve end-to-end secondary link bearer configuration by obtaining the first configuration information and configuring the second device, and can match the end-to-end secondary link bearer according to different service scenarios and QoS parameter information, and transmit different service data on the U2U path based on the multi-hop U2U path, so as to achieve communication performance and system performance guarantee and improvement in terms of reliability and throughput.

[0169] Based on the above embodiments, the configuration and / or maintenance process for the second configuration information in the L2 U2U scenario is as follows.

[0170] For end-to-end secondary link bearers, since direct transmission between the first and second devices via the secondary link is not possible, relay devices are required for relaying. Relay links include the RLCBearer from the first device to an adjacent relay device, between two adjacent relay devices, and from an adjacent relay device to the second device. In other words, the end-to-end secondary link bearer is mapped to the RLCBearer for each hop for transmission at each hop, ultimately reaching the second device.

[0171] Either end device at each hop can lead the configuration and / or maintenance process of the second configuration information. This can be either the first device or a relay device. For example, if the first device is outside the network coverage area, it can send relevant information to the relay device, which will then determine the second configuration information.

[0172] In one implementation, such as Figure 9 As shown, the process of configuring and / or maintaining the second configuration information by the first device includes the following steps.

[0173] S910, the first device obtains the second configuration information.

[0174] The method for determining the first device is as described in the above embodiments, and can be a source terminal, a destination terminal, a service initiator, a service flow sender, etc., which will not be elaborated here.

[0175] Obtain the second configuration information based on the network status of the first device:

[0176] When the first device is in the RRC active state, the second configuration information is obtained from the network-side device through steps S112-S113;

[0177] When the first device is in an RRC idle state or inactive state, the second configuration table is obtained from the second signaling received from the network-side device through steps S114-S115, and the second configuration information is found from the second configuration table according to the end-to-end related information and / or hop-to-hop related information in the second information; or, the second configuration information is found from the second configuration table according to the end-to-end related information in the second information and / or the mapping relationship between the first configuration information and the second configuration information.

[0178] When the first device is outside the network coverage area, the second configuration table is obtained from the third signaling through steps S116-S117, and the second configuration information is found from the second configuration table according to the end-to-end related information and / or hop-to-hop related information in the second information; or, the second configuration information is found from the second configuration table according to the end-to-end related information in the second information and / or the mapping relationship between the first configuration information and the second configuration information.

[0179] It should be noted that since the second signaling and the third signaling are both common signaling, the second configuration table in the second signaling and the third signaling needs to consider all possible business scenarios and provide a second configuration table corresponding to each business scenario. It can also provide a mapping relationship between the first configuration information and the second configuration information corresponding to each business scenario.

[0180] In one implementation, the second and third signaling may include a second configuration table corresponding to the end-to-end related information in the second information, such as a second configuration table B corresponding to the end-to-end QoS parameter information. The first device can obtain the configuration parameters of the second configuration information from the second configuration table according to the end-to-end QoS parameter information. For example, if the end-to-end QoS parameter information 1 is satisfied, then the set 1 of the configuration parameters of the second configuration information is found in the second configuration table B; if the end-to-end QoS parameter information 2 is satisfied, then the set 2 of the configuration parameters of the second configuration information is found in the second configuration table B, and so on. If the end-to-end QoS parameter information n is satisfied, then the set n of the configuration parameters of the second configuration information is found in the second configuration table B. If there is no end-to-end QoS parameter information that meets the conditions, then the set of configuration parameters of the default second configuration information is used.

[0181] Based on the above embodiments, it can be seen that the first device can also find the corresponding first configuration information from the first configuration table according to the end-to-end QoS parameter information. It can be seen that based on the same end-to-end QoS parameter information, the corresponding first configuration information and second configuration information can be found respectively, thereby determining the existence of a mapping relationship between the first configuration information and the second configuration information.

[0182] In one implementation, the correspondence between end-to-end QoS parameters and first and second configuration information can be further added to the second and / or third signaling. A set of end-to-end QoS parameter information is simultaneously mapped to a set of first configuration information and a set of second configuration information. In this case, regardless of whether the first device or the relay device is in control, the two mutually mapped first and second configuration information can be derived from the obtained end-to-end QoS parameter information, thereby determining the mapping relationship between the first configuration information and the second configuration information.

[0183] In another implementation, the second and third signaling may include a second configuration table corresponding to the hop-to-hop related information in the second information, such as a second configuration table B corresponding to the hop-to-hop QoS parameter information. The first device can obtain the configuration parameters of the second configuration information from the second configuration table according to the hop-to-hop QoS parameter information. For example, if the hop-to-hop QoS parameter information 1 is satisfied, then the set 1 of the configuration parameters of the second configuration information is found in the second configuration table B; if the hop-to-hop QoS parameter information 2 is satisfied, then the set 2 of the configuration parameters of the second configuration information is found in the second configuration table B, and so on. If the hop-to-hop QoS parameter information n is satisfied, then the set n of the configuration parameters of the second configuration information is found in the second configuration table B. If there is no end-to-end QoS parameter information that meets the conditions, then the set of configuration parameters of the default second configuration information is used.

[0184] In one implementation, a correspondence between the hop-to-hop QoS parameters and the second configuration information may be further added to the second signaling and / or the third signaling, or the correspondence may be determined by the first device.

[0185] In another embodiment, the second and third signaling may include a mapping relationship between the first and second configuration information, thereby allowing the second configuration information to be determined by combining the first configuration information. The mapping relationship between the first and second configuration information can take many forms; this application only provides two illustrative examples.

[0186] In the first implementation method, the second configuration information is determined based on the end-to-end secondary link bearer identifier. A relatively global end-to-end secondary link bearer identifier mechanism is established, that is, the end-to-end secondary link bearer identifiers corresponding to different channels, such as system information block signaling, broadcast signaling, pre-configuration signaling, network-side devices, cells, etc., all need to be uniformly numbered. This ensures that a global end-to-end secondary link bearer identifier is obtained, thereby finding the correct second configuration information and directly obtaining the mapping relationship between the first configuration information and the second configuration information.

[0187] In the second implementation method, the second configuration information is determined based on the characteristics of the end-to-end secondary link bearer. For example, the second configuration information is determined by at least one of the typical characteristics of an end-to-end secondary link bearer, such as RLC transmission mode: acknowledged mode (AM) or unacknowledged mode (UM), MAC parameters, channel priority of the end-to-end secondary link bearer, and service delay parameters, and the mapping relationship between the first configuration information and the second configuration information is obtained.

[0188] The above embodiments all use QoS parameter information as an example to determine the second configuration information. This is equivalent to determining the hop-to-hop secondary link bearer and mode based on the QoS parameter information. For example, if the reliability requirement of the QoS parameter information is high, the hop-to-hop secondary link bearer can adopt the RLC AM mode. If the reliability requirement of the QoS parameter information is low, the RLC UM mode can be adopted. In the QoS parameter information, the service priority is high and the corresponding hop-to-hop secondary link bearer priority is also high. Conversely, the QoS parameter information priority is low and the hop-to-hop secondary link bearer priority is also low. When the guaranteed bit rate corresponding to the QoS parameter information is x, the guaranteed bit rate corresponding to the hop-to-hop secondary link bearer also needs to be increased by x to carry the service.

[0189] For a new service flow, the hop-to-hop secondary link bearer found using the above method may have already been established (i.e., other similar services or similar services of other UEs have already triggered the establishment). In this case, the newly added end-to-end secondary link bearer can be directly mapped to the existing hop-to-hop secondary link bearer, and the interface of the existing hop-to-hop secondary link bearer can be reconfigured as necessary. The reconfiguration parameters include priority adjustment and / or increase of guaranteed bit rate (adding the rate of the new service flow to the original guaranteed bit rate to form a new guaranteed bit rate), etc.

[0190] For QoS parameters that need to be segmented, the segmentation method can be controlled by the network-side device. For example, all information can be reported to the network-side device, waiting for dedicated signaling from the network-side device for configuration, or the QoS parameter information for the current hop can be searched from broadcast signaling, system information block signaling, or pre-configured signaling according to detailed QoS information. Alternatively, this part of the QoS parameters that need to be segmented can be left to the UE implementation. That is, the UE obtains the fixed configuration parameters from the second configuration information derived from the QoS information obtained from the network, while the segmentable configuration parameters are determined by the UE itself, forming a complete second configuration information.

[0191] Through the above process, the first device obtains the second configuration information of the first communication, and then configures the second configuration information to the third device. Step S120 includes:

[0192] Step S920: The first device sends a third message to the third device. The third message includes the second configuration information and / or the mapping relationship between the first configuration information and the second configuration information. The third message can be sent through the secondary link radio resource control procedure.

[0193] The third device is a relay device connected to the first device in the first communication relay device.

[0194] Based on the above embodiments, in one implementation, the relay device performs the configuration and / or maintenance process of the second configuration information as follows: For example... Figure 10 As shown, the method includes the following steps.

[0195] S1010, the fourth device obtains third information, the third information including configuration information related to the fourth device in the configuration information of the bearer used to establish the first communication.

[0196] The fourth device is one of the relay devices in the first communication.

[0197] The third information includes at least one of the following:

[0198] The third configuration information is the configuration information of the second target hop in the configuration information carried, the second target hop is a hop between the fourth device and the upstream device, and the upstream device is the relay device or the first device of the first communication;

[0199] The fourth configuration information is the configuration information of the third target hop in the configuration information of the bearer. The third target hop is a hop between the fourth device and the downstream device. The downstream device is the relay device or the second device of the first communication.

[0200] In one implementation, step S1010 includes:

[0201] S1011, The fourth device receives a fourth message from the upstream device, the fourth message including the third configuration information;

[0202] S1012, the fourth device obtains the fourth configuration information based on the third configuration information, that is, the relay device can obtain the configuration information of the next hop based on the configuration information of the received previous hop.

[0203] For the same end-to-end service flow, when transmitting through each hop, different hops can use the same or different hop-to-hop configuration information. That is, for the fourth device, the same or different third and fourth configuration information can be used. For example, for a PC5 QoS service flow, its corresponding end-to-end QoS parameter information can determine to use the same hop-to-hop configuration information, that is, to use the same third and fourth configuration information.

[0204] Based on the above principles, in one implementation, after the first device obtains the second configuration information, the first device can send the second configuration information to the third device corresponding to the first hop. For the configuration information of the second hop and subsequent hops, the simplest method, namely direct reuse, can be used to directly use the second configuration information to configure the RLCBearer for each hop. Similarly, for the fourth device, the third and fourth configuration information are the same, both being the second configuration information.

[0205] In another implementation, the configuration information for each hop can also be adjusted according to actual needs. Step S812 includes:

[0206] The fourth configuration information is obtained based on the third configuration information and / or the relevant information of the third target hop in the second information of the first communication, wherein the second information includes service-related information and / or link-related information of the first communication.

[0207] Specifically, the configuration information for each hop can be adjusted based on the QoS parameter information corresponding to each hop. For QoS parameters that need to be segmented, the relay device can also determine the QoS parameter information for this hop based on the end-to-end QoS parameter information and the already allocated or occupied QoS parameter information, or the remaining QoS parameter information other than the already allocated or occupied QoS information.

[0208] The fourth device can also obtain the third information through signaling from the network-side device based on the network status of the fourth device.

[0209] In one implementation, step S1010 includes:

[0210] When the fourth device is in a radio resource control connection state, the fourth device receives the fourth signaling from the network-side device, and the fourth signaling includes the third information.

[0211] In one implementation, before receiving the fourth signaling from the network-side device, the method further includes:

[0212] The fourth device sends information related to the third target hop in the second information of the first communication to the network-side device. The second information includes service-related information and / or link-related information of the first communication.

[0213] In another embodiment, step S1010 includes:

[0214] When the fourth device is in a radio resource control idle state or inactive state, the fourth device receives the fifth signaling from the network-side device;

[0215] The fourth device searches for the third information in the fifth signaling based on the relevant information of the third target hop in the second information of the first communication. The second information includes service-related information and / or link-related information of the first communication.

[0216] In another embodiment, step S1010 includes:

[0217] When the fourth device is outside the network coverage area, the fourth device searches for the third information in the sixth signaling based on the relevant information of the third target hop in the second information of the first communication. The second information includes service-related information and / or link-related information of the first communication.

[0218] S1020, the fourth device establishes the hop-to-hop secondary link bearer of the second target hop and / or the hop-to-hop secondary link bearer of the third target hop according to the third information.

[0219] In one implementation, step S1020 includes:

[0220] The fourth device sends a fifth message to the downstream device. The fifth message includes the fourth configuration information and can be sent via the secondary link radio resource control (RRC) procedure. After receiving the configuration information of the previous hop from the upstream device, each relay device can send the configuration information of the current hop to the downstream device via the PC5 RRC procedure.

[0221] The method by which the fourth device obtains the third information based on the network status is similar to the method by which the first device obtains the first information based on the network status in the above embodiment, and the repeated parts will not be described again here.

[0222] As can be seen from the technical solutions of the above embodiments, the embodiments of this application obtain the second configuration information and configure it to the third device to realize the hop-to-hop secondary link bearer configuration, and can match the hop-to-hop secondary link bearer according to different service scenarios and QoS parameter information, and transmit different service data on the U2U path based on the multi-hop U2U path, so as to achieve communication performance and system performance guarantee and improvement in terms of reliability and throughput.

[0223] Based on the above embodiments, for the L3 U2U scenario, each hop can be considered as a complete protocol stack system.

[0224] In one implementation, the end-to-end QoS parameter information can be segmented, that is, segmented into the QoS parameter information of each hop, for example, segmented into the QoS parameter information of the first hop (Hop1), the QoS parameter information of the second hop (Hop2), ..., the QoS parameter information of the Nth hop (HopN), etc.

[0225] The segmentation process of the aforementioned QoS parameter information can be performed through PC5-S or the Vehicle-to-Everything higher layer (V2X higher layer).

[0226] Therefore, in the configuration process of secondary link bearers in L3 U2U scenarios, each hop can be configured independently. This can be broken down into configuration information for each hop based on its corresponding QoS parameters. For example, Hop1 performs SLRB and underlying configuration based on its QoS parameters, Hop2 performs SLRB and underlying configuration based on its QoS parameters, and so on, until HopN performs SLRB and underlying configuration based on its QoS parameters. The configuration information for each hop can include SDAP layer configuration information, PDCP configuration information, RLC configuration information, MAC configuration information, and PHY configuration information, etc.

[0227] The configuration for each hop can be performed using the same process:

[0228] The secondary link bearer of each hop is configured according to the sending device in that hop, and the process of reusing the direct link in the above embodiment is reused as much as possible;

[0229] When the sending device is in RRC connection state, a method similar to steps S112-S113 is adopted, in which the sending device reports the relevant information corresponding to each hop, such as the QoS parameter information of each hop, to the network-side device, and receives the dedicated signaling from the network-side device. The dedicated signaling includes the configuration information of each hop.

[0230] When the sending device is in the RRC idle state or inactive state, a method similar to steps S114-S115 is adopted, in which the sending device searches for the configuration information of each hop from the broadcast signaling or system message block signaling based on the QoS parameter information of each hop.

[0231] When the sending device is in OOC, the sending device looks up the configuration information of each hop from the pre-configured signaling based on the QoS parameter information of each hop.

[0232] After obtaining the configuration information for each hop, the sending device can send it to the peer device for each hop through the PC5 RRC process.

[0233] As can be seen from the technical solutions of the above embodiments, the embodiments of this application, in the L3 U2U scenario, by segmenting the QoS parameter information of each hop, and then obtaining the configuration information of each hop based on the network status according to the QoS parameter information of each hop, can realize the secondary link bearer configuration of each hop. Furthermore, it can match the secondary link bearer of each hop according to different QoS parameters, and transmit different service data on the U2U path based on the multi-hop U2U path, so as to achieve communication performance and system performance guarantee and improvement in terms of reliability and throughput.

[0234] The relay communication method provided in this application can be executed by a relay communication device. This application uses an example of a relay communication device executing the relay communication method to illustrate the relay communication device provided in this application.

[0235] like Figure 11 As shown, the relay communication device includes: a first transmission module 1101 and a first execution module 1102.

[0236] The first transmission module 1101 is used to acquire first information, the first information including configuration information for establishing a bearer for the first communication; the first execution module 1102 is used to establish a bearer for the first communication with the second device according to the first information and to perform communication; wherein, the relay communication device is one of the source terminal and the destination terminal of the first communication, the second device is the other of the source terminal and the destination terminal of the first communication, the first communication is a secondary link relay communication, and the first information includes at least one of the following:

[0237] The first configuration information is the end-to-end configuration information in the carried configuration information;

[0238] The second configuration information is the hop-to-hop configuration information corresponding to the first target hop between the relay communication device and the third device in the configuration information carried, and the third device is the relay device connected to the first device in the first communication.

[0239] Optionally, the first communication is one of the following:

[0240] Layer 2 secondary link relay communication;

[0241] Layer 3 secondary link relay communication.

[0242] Optionally, when the first communication is a Layer 2 secondary link relay communication, the second configuration information includes at least one of the following:

[0243] Configuration information for the wireless link control layer;

[0244] Configuration information for the media access control layer;

[0245] Physical layer configuration information.

[0246] Optionally, when the first communication is a Layer 3 secondary link relay communication, the second configuration information includes at least one of the following:

[0247] Service data adapts to the configuration information of the protocol layer;

[0248] Configuration information for the packet data aggregation protocol layer;

[0249] Configuration information for the wireless link control layer;

[0250] Configuration information for the media access control layer;

[0251] Physical layer configuration information.

[0252] Optionally, the relay communication device is one of the following:

[0253] The service initiating device for the secondary link relay communication;

[0254] The secondary link relay communication service flow sending device;

[0255] The secondary link relay communication service flow receiving device;

[0256] One of the source and destination terminals in the secondary link relay communication.

[0257] As can be seen from the technical solutions of the above embodiments, the embodiments of this application obtain first information, which includes configuration information for establishing a bearer for first communication; then establish the bearer for the first communication with a second device based on the first information, and perform communication; wherein, the first information includes first configuration information for establishing an end-to-end secondary link bearer and / or second configuration information for establishing a hop-to-hop secondary link bearer, thereby enabling rapid configuration of the bearer for secondary link relay communication to realize service data transmission on U2U paths or even multi-hop U2U paths.

[0258] Based on the above embodiments, optionally, the first transmission module 1101 is configured to receive a first message from a network-side device and obtain the first information based on the first message;

[0259] The first message includes at least one of the following:

[0260] The first configuration information and / or the second configuration information;

[0261] A configuration table is used to look up the first configuration information and / or the second configuration information;

[0262] The mapping relationship between the first configuration information and the second configuration information.

[0263] Optionally, when in the radio resource control connection state, the first transmission module 1101 is used to receive the first signaling from the network-side device, the first signaling including the first configuration information and / or the second configuration information.

[0264] Optionally, the first signaling may further include a mapping relationship between the first configuration information and the second configuration information.

[0265] Optionally, the first transmission module 1101 is further configured to send second information of the first communication to the network-side device, the second information including service-related information and / or link-related information of the first communication.

[0266] Optionally, when in a radio resource control idle or inactive state, the first transmission module 1101 is used to:

[0267] Receive a second signaling from a network-side device. The second signaling includes the configuration table, and the configuration table includes a mapping relationship between the first information and the second information.

[0268] The first information is retrieved from the configuration table based on the second information of the first communication, wherein the second information includes service-related information and / or link-related information of the first communication.

[0269] Optionally, the second signaling may also include a mapping relationship between the first configuration information and the second configuration information.

[0270] Optionally, when outside network coverage, the first transmission module 1101 is used to:

[0271] Pre-configuration information is obtained from the third signaling, the pre-configuration information including the configuration table, the configuration table including the mapping relationship between the first information and the second information;

[0272] The first information is retrieved from the configuration table based on the second information of the first communication, wherein the second information includes service-related information and / or link-related information of the first communication.

[0273] Optionally, the third signaling may also include a mapping relationship between the first configuration information and the second configuration information.

[0274] Optionally, the service-related information of the first communication includes at least one of the following:

[0275] End-to-end QoS parameter information;

[0276] QoS parameter information for hop to hop.

[0277] Optionally, the hop-to-hop QoS parameter information includes at least one of the following:

[0278] QoS parameter information for this hop;

[0279] QoS parameter information that has already been allocated or occupied;

[0280] The remaining QoS parameter information besides the QoS information that has already been allocated or occupied;

[0281] QoS segmentation information.

[0282] Optionally, the link-related information of the first communication includes at least one of the following:

[0283] The first relay indication information is used to indicate whether layer 2 sublink relay communication or layer 3 sublink relay communication is used;

[0284] Information on relay links from one hop to another;

[0285] The relay link information for hop-to-hop includes at least one of the following:

[0286] Total number of hops;

[0287] The sequence number of this jump.

[0288] Optionally, the first execution module 1102 is configured to perform at least one of the following:

[0289] The first configuration information is retrieved from the configuration table based on the end-to-end related information in the second information;

[0290] The second configuration information is retrieved from the configuration table based on the end-to-end related information and / or hop-to-hop related information in the second information;

[0291] The second configuration information is retrieved from the configuration table based on the end-to-end related information in the second information and / or the mapping relationship between the first configuration information and the second configuration information.

[0292] Optionally, the configuration table includes a first configuration table and a second configuration table, wherein the first configuration table is used to look up the first configuration information and the second configuration table is used to look up the second configuration information.

[0293] Optionally, the first execution module 1102 includes at least one of the following:

[0294] The first device sends a second message to the second device, the second message including the first configuration information, and the second message can be sent through the secondary link radio resource control procedure;

[0295] The first device sends a third message to the third device. The third message includes the second configuration information and / or the mapping relationship between the first configuration information and the second configuration information. The third message can be sent through the secondary link radio resource control procedure.

[0296] The third device is a relay device connected to the first device in the first communication relay device.

[0297] As can be seen from the technical solutions of the above embodiments, the embodiments of this application can flexibly realize the bearer configuration of secondary link relay communication by obtaining the first configuration information and / or the second configuration information in different ways when the first device is in different network states.

[0298] The relay communication device in this application embodiment can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or other devices besides a terminal. For example, the terminal can include, but is not limited to, the type of terminal 11 listed above; other devices can be servers, network attached storage (NAS), etc., and this application embodiment does not specifically limit the type.

[0299] The relay communication device provided in this application embodiment can achieve... Figures 2 to 10 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0300] like Figure 12 As shown in the embodiments of this application, a relay communication method is also provided. The relay communication method is executed by a fourth device. In other words, the method can be executed by software or hardware installed on the fourth device.

[0301] S1210, the fourth device obtains third information, the third information including configuration information related to the fourth device in the configuration information of the bearer used to establish the first communication.

[0302] S1220, The fourth device establishes the hop-to-hop secondary link bearer of the second target hop and / or the hop-to-hop secondary link bearer of the third target hop according to the third information;

[0303] Wherein, the fourth device is one of the relay devices in the first communication; the second target hop is a hop between the fourth device and the upstream device; the third target hop is a hop between the fourth device and the downstream device; the upstream device is either a relay device or a first device in the first communication; the downstream device is either a relay device or a second device in the first communication; the first device is either the source terminal or the destination terminal in the first communication; the second device is either the source terminal or the destination terminal in the first communication; the first communication is a secondary link relay communication; and the third information includes at least one of the following:

[0304] The third configuration information is the configuration information of the second target hop in the configuration information carried;

[0305] The fourth configuration information is the configuration information of the third target hop in the configuration information carried.

[0306] Optionally, S1210 includes:

[0307] The fourth device receives a fourth message from the upstream device, the fourth message including the third configuration information;

[0308] The fourth device obtains the fourth configuration information based on the third configuration information.

[0309] Optionally, obtaining the fourth configuration information based on the third configuration information includes:

[0310] The fourth configuration information is obtained based on the third configuration information and / or the relevant information of the third target hop in the second information of the first communication, wherein the second information includes service-related information and / or link-related information of the first communication.

[0311] Optionally, S1210 includes:

[0312] When the fourth device is in a radio resource control connection state, the fourth device receives the fourth signaling from the network-side device, and the fourth signaling includes the third information.

[0313] Optionally, before receiving the fourth signaling from the network-side device, the method further includes:

[0314] The fourth device sends information related to the third target hop in the second information of the first communication to the network-side device. The second information includes service-related information and / or link-related information of the first communication.

[0315] Optionally, S1210 includes:

[0316] When the fourth device is in a radio resource control idle state or inactive state, the fourth device receives the fifth signaling from the network-side device;

[0317] The fourth device searches for the third information in the fifth signaling based on the relevant information of the third target hop in the second information of the first communication. The second information includes service-related information and / or link-related information of the first communication.

[0318] Optionally, S1210 includes:

[0319] When the fourth device is outside the network coverage area, the fourth device searches for the third information in the sixth signaling based on the relevant information of the third target hop in the second information of the first communication. The second information includes service-related information and / or link-related information of the first communication.

[0320] Optionally, before the fourth device acquires the third information, the method further includes:

[0321] The fourth device obtains information about the third target hop from the second information of the first communication from the upstream device.

[0322] Optionally, S1220 includes:

[0323] The fourth device sends a fifth message to the downstream device, the fifth message including the fourth configuration information.

[0324] Optionally, the first communication is characterized by one of the following:

[0325] Layer 2 secondary link relay communication;

[0326] Layer 3 secondary link relay communication.

[0327] Optionally, when the first communication is a Layer 2 secondary link relay communication, the third configuration information and the fourth configuration information include at least one of the following:

[0328] Configuration information for the wireless link control layer;

[0329] Configuration information for the media access control layer;

[0330] Physical layer configuration information.

[0331] Optionally, when the first communication is a Layer 3 secondary link relay communication, the third configuration information and the fourth configuration information include at least one of the following:

[0332] Service data adapts to the configuration information of the protocol layer;

[0333] Configuration information for the packet data aggregation protocol layer;

[0334] Configuration information for the wireless link control layer;

[0335] Configuration information for the media access control layer;

[0336] Physical layer configuration information.

[0337] Steps S1210-S1220 can achieve the following: Figure 10 The method embodiments shown achieve the same technical effects, and repeated parts will not be described again here.

[0338] As can be seen from the technical solutions of the above embodiments, the embodiments of this application obtain third information, which includes configuration information related to the fourth device in the configuration information for establishing the bearer of the first communication, and then establish the hop-to-hop secondary link bearer of the second target hop and / or the hop-to-hop secondary link bearer of the third target hop according to the third information, thereby realizing the configuration of the hop-to-hop secondary link bearer. Moreover, it can match the hop-to-hop secondary link bearer according to different service scenarios and QoS parameter information, and transmit different service data on the U2U path based on the multi-hop U2U path, so as to achieve communication performance and system performance guarantee and improvement in terms of reliability and throughput.

[0339] The relay communication method provided in this application can be executed by a relay communication device. This application uses an example of a relay communication device executing the relay communication method to illustrate the relay communication device provided in this application.

[0340] like Figure 13 The relay communication device includes: a second transmission module 1301 and a second execution module 1302.

[0341] The second transmission module 1301 is used to acquire third information, the third information including configuration information related to the relay communication device in the configuration information for establishing the bearer of the first communication; the second execution module 1302 is used to establish the hop-to-hop secondary link bearer of the second target hop and / or the hop-to-hop secondary link bearer of the third target hop according to the third information;

[0342] Wherein, the relay communication device is one of the relay devices in the first communication; the second target hop is a hop between the relay communication device and the upstream device; the third target hop is a hop between the relay communication device and the downstream device; the upstream device is either a relay device or a first device in the first communication; the downstream device is either a relay device or a second device in the first communication; the first device is either a source terminal or a destination terminal in the first communication; the second device is either a source terminal or a destination terminal in the first communication; the first communication is a secondary link relay communication; and the third information includes at least one of the following:

[0343] The third configuration information is the configuration information of the second target hop in the configuration information carried;

[0344] The fourth configuration information is the configuration information of the third target hop in the configuration information carried.

[0345] Optionally, the second transmission module 1301 is used for:

[0346] Receive a fourth message from the upstream device, the fourth message including the third configuration information;

[0347] The fourth configuration information is obtained based on the third configuration information.

[0348] Optionally, the second transmission module 1301 is used to obtain the fourth configuration information based on the third configuration information and / or the relevant information of the third target hop in the second information of the first communication, wherein the second information includes service-related information and / or link-related information of the first communication.

[0349] Optionally, when in the radio resource control connection state, the second transmission module 1301 is used to receive the fourth signaling from the network-side device, the fourth signaling including the third information.

[0350] Optionally, the second transmission module 1301 is further configured to send information related to the third target hop in the second information of the first communication to the network-side device, wherein the second information includes service-related information and / or link-related information of the first communication.

[0351] Optionally, the second transmission module 1301 is used for:

[0352] When in the radio resource control idle or inactive state, receive the fifth signaling from the network-side device;

[0353] The third information is retrieved from the fifth signaling based on the relevant information of the third target hop in the second information of the first communication. The second information includes service-related information and / or link-related information of the first communication.

[0354] Optionally, when outside network coverage, the second transmission module 1301 is used to look up the third information from the sixth signaling based on the information related to the third target hop in the second information of the first communication, wherein the second information includes service-related information and / or link-related information of the first communication.

[0355] Optionally, the second transmission module 1301 is further configured to obtain information related to the third target hop from the second information of the first communication from the upstream device.

[0356] Optionally, the second execution module 1302 is used to send a fifth message to the downstream device, the fifth message including the fourth configuration information.

[0357] Optionally, the first communication is characterized by one of the following:

[0358] Layer 2 secondary link relay communication;

[0359] Layer 3 secondary link relay communication.

[0360] Optionally, when the first communication is a Layer 2 secondary link relay communication, the third configuration information and the fourth configuration information include at least one of the following:

[0361] Configuration information for the wireless link control layer;

[0362] Configuration information for the media access control layer;

[0363] Physical layer configuration information.

[0364] Optionally, when the first communication is a Layer 3 secondary link relay communication, the third configuration information and the fourth configuration information include at least one of the following:

[0365] Service data adapts to the configuration information of the protocol layer;

[0366] Configuration information for the packet data aggregation protocol layer;

[0367] Configuration information for the wireless link control layer;

[0368] Configuration information for the media access control layer;

[0369] Physical layer configuration information.

[0370] As can be seen from the technical solutions of the above embodiments, the embodiments of this application obtain third information, which includes configuration information related to the relay communication device in the configuration information for establishing the bearer of the first communication, and then establish the hop-to-hop secondary link bearer of the second target hop and / or the hop-to-hop secondary link bearer of the third target hop according to the third information, thereby realizing the hop-to-hop secondary link bearer configuration. Moreover, it can match the hop-to-hop secondary link bearer according to different service scenarios and QoS parameter information, and transmit different service data on the U2U path based on the multi-hop U2U path, so as to achieve communication performance and system performance guarantee and improvement in terms of reliability and throughput.

[0371] The relay communication device in this application embodiment can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or other devices besides a terminal. For example, the terminal can include, but is not limited to, the type of terminal 11 listed above; other devices can be servers, network attached storage (NAS), etc., and this application embodiment does not specifically limit the type.

[0372] The relay communication device provided in this application embodiment can achieve... Figure 12The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0373] Optional, such as Figure 14 As shown, this application embodiment also provides a communication device 1400, including a processor 1401 and a memory 1402. The memory 1402 stores a program or instructions that can run on the processor 1401. For example, when the communication device 1400 is a terminal, the program or instructions executed by the processor 1401 implement the various steps of the above-described relay communication method embodiment and achieve the same technical effect. When the communication device 1400 is a network-side device, the program or instructions executed by the processor 1401 implement the various steps of the above-described relay communication method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0374] This application embodiment also provides a terminal, including a processor and a communication interface. The processor is used to establish a bearer for the first communication with a second device based on the first information and to perform communication. The communication interface is used to acquire the first information, which includes configuration information for establishing the bearer for the first communication. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 15 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0375] The terminal 1500 includes, but is not limited to, at least some of the following components: radio frequency unit 1501, network module 1502, audio output unit 1503, input unit 1504, sensor 1505, display unit 1506, user input unit 1507, interface unit 1508, memory 1509, and processor 1510.

[0376] Those skilled in the art will understand that the terminal 1500 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1510 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 15 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0377] It should be understood that, in this embodiment, the input unit 1504 may include a graphics processing unit (GPU) 15041 and a microphone 15042. The GPU 15041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1506 may include a display panel 15061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1507 includes a touch panel 15071 and at least one of other input devices 15072. The touch panel 15071 is also called a touch screen. The touch panel 15071 may include a touch detection device and a touch controller. Other input devices 15072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0378] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1501 can transmit it to the processor 1510 for processing; in addition, the radio frequency unit 1501 can send uplink data to the network-side device. Typically, the radio frequency unit 1501 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0379] The memory 1509 can be used to store software programs or instructions and various data. The memory 1509 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback function, image playback function, etc.). Furthermore, the memory 1509 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (Synchlink DRAM, SLDRAM), and direct memory bus RAM (DRRAM). The memory 1509 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0380] Processor 1510 may include one or more processing units; optionally, processor 1510 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1510.

[0381] The radio frequency unit 1501 is used to acquire first information, which includes configuration information for establishing a bearer for first communication.

[0382] Processor 1510 is configured to establish a bearer for the first communication with a second device based on the first information, and to perform communication thereon; wherein the relay communication device is one of the source terminal and the destination terminal of the first communication, the second device is the other of the source terminal and the destination terminal of the first communication, the first communication is a secondary link relay communication, and the first information includes at least one of the following:

[0383] The first configuration information is the end-to-end configuration information in the carried configuration information;

[0384] The second configuration information is the hop-to-hop configuration information corresponding to the first target hop between the relay communication device and the third device in the configuration information carried, and the third device is the relay device connected to the first device in the first communication.

[0385] Optionally, the first communication is one of the following:

[0386] Layer 2 secondary link relay communication;

[0387] Layer 3 secondary link relay communication.

[0388] Optionally, when the first communication is a Layer 2 secondary link relay communication, the second configuration information includes at least one of the following:

[0389] Configuration information for the wireless link control layer;

[0390] Configuration information for the media access control layer;

[0391] Physical layer configuration information.

[0392] Optionally, when the first communication is a Layer 3 secondary link relay communication, the second configuration information includes at least one of the following:

[0393] Service data adapts to the configuration information of the protocol layer;

[0394] Configuration information for the packet data aggregation protocol layer;

[0395] Configuration information for the wireless link control layer;

[0396] Configuration information for the media access control layer;

[0397] Physical layer configuration information.

[0398] Optionally, the relay communication device is one of the following:

[0399] The service initiating device for the secondary link relay communication;

[0400] The secondary link relay communication service flow sending device;

[0401] The secondary link relay communication service flow receiving device;

[0402] One of the source and destination terminals in the secondary link relay communication.

[0403] The embodiments of this application can quickly configure the bearer for secondary link relay communication to realize service data transmission on U2U paths or even multi-hop U2U paths.

[0404] Based on the above embodiments, optionally, the radio frequency unit 1501 is used to receive a first message from a network-side device and obtain the first information based on the first message;

[0405] The first message includes at least one of the following:

[0406] The first configuration information and / or the second configuration information;

[0407] A configuration table is used to look up the first configuration information and / or the second configuration information;

[0408] The mapping relationship between the first configuration information and the second configuration information.

[0409] Optionally, when in the radio resource control connection state, the radio frequency unit 1501 is used to receive the first signaling from the network-side device, the first signaling including the first configuration information and / or the second configuration information.

[0410] Optionally, the first signaling may further include a mapping relationship between the first configuration information and the second configuration information.

[0411] Optionally, the radio frequency unit 1501 is further configured to send second information of the first communication to the network-side device, the second information including service-related information and / or link-related information of the first communication.

[0412] Optionally, when in a radio resource control idle or inactive state, the radio frequency unit 1501 is used to:

[0413] Receive a second signaling from a network-side device. The second signaling includes the configuration table, and the configuration table includes a mapping relationship between the first information and the second information.

[0414] The first information is retrieved from the configuration table based on the second information of the first communication, wherein the second information includes service-related information and / or link-related information of the first communication.

[0415] Optionally, the second signaling may also include a mapping relationship between the first configuration information and the second configuration information.

[0416] Optionally, when outside network coverage, the radio frequency unit 1501 is used to:

[0417] Pre-configuration information is obtained from the third signaling, the pre-configuration information including the configuration table, the configuration table including the mapping relationship between the first information and the second information;

[0418] The first information is retrieved from the configuration table based on the second information of the first communication, wherein the second information includes service-related information and / or link-related information of the first communication.

[0419] Optionally, the third signaling may also include a mapping relationship between the first configuration information and the second configuration information.

[0420] Optionally, the service-related information of the first communication includes at least one of the following:

[0421] End-to-end QoS parameter information;

[0422] QoS parameter information for hop to hop.

[0423] Optionally, the hop-to-hop QoS parameter information includes at least one of the following:

[0424] QoS parameter information for this hop;

[0425] QoS parameter information that has already been allocated or occupied;

[0426] The remaining QoS parameter information besides the QoS information that has already been allocated or occupied;

[0427] QoS segmentation information.

[0428] Optionally, the link-related information of the first communication includes at least one of the following:

[0429] The first relay indication information is used to indicate whether layer 2 sublink relay communication or layer 3 sublink relay communication is used;

[0430] Information on relay links from one hop to another;

[0431] The relay link information for hop-to-hop includes at least one of the following:

[0432] Total number of hops;

[0433] The sequence number of this jump.

[0434] Optionally, the processor 1510 is configured to perform at least one of the following:

[0435] The first configuration information is retrieved from the configuration table based on the end-to-end related information in the second information;

[0436] The second configuration information is retrieved from the configuration table based on the end-to-end related information and / or hop-to-hop related information in the second information;

[0437] The second configuration information is retrieved from the configuration table based on the end-to-end related information in the second information and / or the mapping relationship between the first configuration information and the second configuration information.

[0438] Optionally, the configuration table includes a first configuration table and a second configuration table, wherein the first configuration table is used to look up the first configuration information and the second configuration table is used to look up the second configuration information.

[0439] Optionally, the processor 1510 includes at least one of the following:

[0440] The first device sends a second message to the second device, the second message including the first configuration information;

[0441] The first device sends a third message to the third device, the third message including the second configuration information and / or the mapping relationship between the first configuration information and the second configuration information;

[0442] The third device is a relay device connected to the first device in the first communication relay device.

[0443] The embodiments of this application can flexibly implement the bearer configuration of secondary link relay communication.

[0444] This application embodiment also provides a terminal, including a processor and a communication interface. The processor is used to establish a hop-to-hop secondary link bearer for a second target hop and / or a hop-to-hop secondary link bearer for a third target hop based on the third information. The communication interface is used to acquire the third information, which includes configuration information related to the relay communication device in the configuration information for establishing the bearer of the first communication. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 16 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0445] The terminal 1600 includes, but is not limited to, at least some of the following components: radio frequency unit 1601, network module 1602, audio output unit 1603, input unit 1604, sensor 1605, display unit 1606, user input unit 1607, interface unit 1608, memory 1609, and processor 1610.

[0446] Those skilled in the art will understand that the terminal 1600 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1610 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 16 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0447] It should be understood that, in this embodiment, the input unit 1604 may include a graphics processing unit (GPU) 16041 and a microphone 16042. The GPU 16041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1606 may include a display panel 16061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1607 includes at least one of a touch panel 16071 and other input devices 16072. The touch panel 16071 is also called a touch screen. The touch panel 16071 may include a touch detection device and a touch controller. Other input devices 16072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0448] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1601 can transmit it to the processor 1610 for processing; in addition, the radio frequency unit 1601 can send uplink data to the network-side device. Typically, the radio frequency unit 1601 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0449] The memory 1609 can be used to store software programs or instructions, as well as various data. The memory 1609 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1609 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (Synchlink DRAM, SLDRAM), and direct memory bus RAM (DRRAM). The memory 1609 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0450] Processor 1610 may include one or more processing units; optionally, processor 1610 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1610.

[0451] The radio frequency unit 1601 is used to acquire third information, which includes configuration information related to the relay communication device in the configuration information of the bearer used to establish the first communication.

[0452] Processor 1610 is configured to establish a hop-to-hop secondary link bearer for the second target hop and / or a hop-to-hop secondary link bearer for the third target hop based on the third information.

[0453] Wherein, the relay communication device is one of the relay devices in the first communication; the second target hop is a hop between the relay communication device and the upstream device; the third target hop is a hop between the relay communication device and the downstream device; the upstream device is either a relay device or a first device in the first communication; the downstream device is either a relay device or a second device in the first communication; the first device is either a source terminal or a destination terminal in the first communication; the second device is either a source terminal or a destination terminal in the first communication; the first communication is a secondary link relay communication; and the third information includes at least one of the following:

[0454] The third configuration information is the configuration information of the second target hop in the configuration information carried;

[0455] The fourth configuration information is the configuration information of the third target hop in the configuration information carried.

[0456] Optionally, the radio frequency unit 1601 is used for:

[0457] Receive a fourth message from the upstream device, the fourth message including the third configuration information;

[0458] The fourth configuration information is obtained based on the third configuration information.

[0459] Optionally, the radio frequency unit 1601 is used to obtain the fourth configuration information based on the third configuration information and / or the relevant information of the third target hop in the second information of the first communication, wherein the second information includes service-related information and / or link-related information of the first communication.

[0460] Optionally, when in a radio resource control connection state, the radio frequency unit 1601 receives the fourth signaling from a network-side device, the fourth signaling including the third information.

[0461] Optionally, the radio frequency unit 1601 is further configured to send information related to the third target hop in the second information of the first communication to the network-side device, wherein the second information includes service-related information and / or link-related information of the first communication.

[0462] Optionally, the radio frequency unit 1601 is used for:

[0463] When in the radio resource control idle or inactive state, receive the fifth signaling from the network-side device;

[0464] The third information is retrieved from the fifth signaling based on the relevant information of the third target hop in the second information of the first communication. The second information includes service-related information and / or link-related information of the first communication.

[0465] Optionally, when outside network coverage, the second transmission module 1301 is used to look up the third information from the sixth signaling based on the information related to the third target hop in the second information of the first communication, wherein the second information includes service-related information and / or link-related information of the first communication.

[0466] Optionally, the radio frequency unit 1601 is further configured to obtain information related to the third target hop from the second information of the first communication from the upstream device.

[0467] Optionally, the processor 1610 is configured to send a fifth message to the downstream device, the fifth message including the fourth configuration information.

[0468] Optionally, the first communication is characterized by one of the following:

[0469] Layer 2 secondary link relay communication;

[0470] Layer 3 secondary link relay communication.

[0471] Optionally, when the first communication is a Layer 2 secondary link relay communication, the third configuration information and the fourth configuration information include at least one of the following:

[0472] Configuration information for the wireless link control layer;

[0473] Configuration information for the media access control layer;

[0474] Physical layer configuration information.

[0475] Optionally, when the first communication is a Layer 3 secondary link relay communication, the third configuration information and the fourth configuration information include at least one of the following:

[0476] Service data adapts to the configuration information of the protocol layer;

[0477] Configuration information for the packet data aggregation protocol layer;

[0478] Configuration information for the wireless link control layer;

[0479] Configuration information for the media access control layer;

[0480] Physical layer configuration information.

[0481] The embodiments of this application can match the secondary link bearer from hop to hop according to different service scenarios and QoS parameter information, and transmit different service data on the U2U path based on the multi-hop U2U path, so as to achieve communication performance and system performance guarantee and improvement in terms of reliability and throughput.

[0482] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described relay communication method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0483] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0484] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described relay communication method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0485] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0486] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described relay communication method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0487] This application also provides a relay communication system, including a first device and a fourth device. The first device can be used to perform the steps of the relay communication device method as described above, and the fourth device can be used to perform the steps of the relay communication device method as described above.

[0488] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0489] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0490] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A relay communication method, characterized in that, include: The first device acquires first information, which includes configuration information for a bearer used to establish the first communication. The first device establishes a bearer for the first communication with the second device based on the first information, and then conducts communication. Wherein, the first device is the source terminal of the first communication, the second device is the destination terminal of the first communication, and the first communication is a secondary link relay communication that involves data relay through N relay devices and includes N+1 hops, where N is a positive integer; Wherein, the first information includes the second configuration information, or the first information includes the first configuration information and the second configuration information; The first configuration information is the end-to-end configuration information in the carried configuration information; The second configuration information is the hop-to-hop configuration information corresponding to the first target hop between the first device and the third device in the configuration information carried, wherein the third device is the relay device directly connected to the first device among the N relay devices.

2. The method according to claim 1, characterized in that, The first device acquires the first information, including: The first device receives a first message from the network-side device and obtains the first information based on the first message; The first message includes at least one of the following: The first configuration information and / or the second configuration information; A configuration table is used to look up the first configuration information and / or the second configuration information; The mapping relationship between the first configuration information and the second configuration information.

3. The method according to claim 2, characterized in that, The first device receives a first message from a network-side device and obtains the first information based on the first message, including: When the first device is in a radio resource control connection state, the first device receives a first signaling from the network-side device, the first signaling including the first configuration information and / or the second configuration information.

4. The method according to claim 3, characterized in that, The first signaling may also include a mapping relationship between the first configuration information and the second configuration information.

5. The method according to claim 3, characterized in that, Before receiving the first signaling from the network-side device, the method further includes: The first device sends second information of the first communication to the network-side device. The second information includes service-related information and / or link-related information of the first communication.

6. The method according to claim 2, characterized in that, The first device receives a first message from a network-side device and obtains the first information based on the first message, including: When the first device is in a radio resource control idle state or inactive state, the first device receives a second signaling from the network side device. The second signaling includes the configuration table, and the configuration table includes a mapping relationship between the first information and the second information. The first device retrieves the first information from the configuration table based on the second information of the first communication, wherein the second information includes service-related information and / or link-related information of the first communication.

7. The method according to claim 6, characterized in that, The second signaling also includes the mapping relationship between the first configuration information and the second configuration information.

8. The method according to claim 2, characterized in that, The first device receives a first message from a network-side device and obtains the first information based on the first message, including: When the first device is outside the network coverage area, the first device obtains pre-configuration information from the third signaling, the pre-configuration information including the configuration table, the configuration table including the mapping relationship between the first information and the second information; The first device retrieves the first information from the configuration table based on the second information of the first communication, wherein the second information includes service-related information and / or link-related information of the first communication.

9. The method according to claim 8, characterized in that, The third signaling also includes the mapping relationship between the first configuration information and the second configuration information.

10. The method according to claim 5, 6 or 8, characterized in that, The service-related information of the first communication includes at least one of the following: End-to-end QoS parameter information; QoS parameter information for hop to hop.

11. The method according to claim 10, characterized in that, The QoS parameter information for hop-to-hop includes at least one of the following: QoS parameter information for this hop; QoS parameter information that has already been allocated or occupied; The remaining QoS parameter information besides the QoS information that has already been allocated or occupied; QoS segmentation information.

12. The method according to any one of claims 4-6, characterized in that, The link-related information of the first communication includes at least one of the following: The first relay indication information is used to indicate whether layer 2 sublink relay communication or layer 3 sublink relay communication is used; Information on relay links from one hop to another; The relay link information for hop-to-hop includes at least one of the following: Total number of hops; The sequence number of this jump.

13. The method according to claim 6 or 8, characterized in that, The first device retrieves the first information from the configuration table based on the second information of the first communication, including at least one of the following: The first device retrieves the first configuration information from the configuration table based on the end-to-end related information in the second information; The first device retrieves the second configuration information from the configuration table based on the end-to-end related information and / or hop-to-hop related information in the second information; The first device retrieves the second configuration information from the configuration table based on the end-to-end related information in the second information and / or the mapping relationship between the first configuration information and the second configuration information.

14. The method according to claim 13, characterized in that, The configuration table includes a first configuration table and a second configuration table. The first configuration table is used to look up the first configuration information, and the second configuration table is used to look up the second configuration information.

15. The method according to claim 1, characterized in that, The bearer for the first communication established between the first device and the second device based on the first information includes at least one of the following: The first device sends a second message to the second device, the second message including the first configuration information; The first device sends a third message to the third device, the third message including the second configuration information and / or the mapping relationship between the first configuration information and the second configuration information.

16. The method according to claim 1, characterized in that, The first communication is one of the following: Layer 2 secondary link relay communication; Layer 3 secondary link relay communication.

17. The method according to claim 16, characterized in that, When the first communication is a Layer 2 secondary link relay communication, the second configuration information includes at least one of the following: Configuration information for the wireless link control layer; Configuration information for the media access control layer; Configuration information for the physical layer.

18. The method according to claim 16, characterized in that, In the case that the first communication is a Layer 3 secondary link relay communication, the second configuration information includes at least one of the following: Service data adapts to the configuration information of the protocol layer; Configuration information for the packet data aggregation protocol layer; Configuration information for the wireless link control layer; Configuration information for the media access control layer; Configuration information for the physical layer.

19. The method according to claim 1, characterized in that, The first device is one of the following: The service initiating device for the secondary link relay communication; The service flow sending device of the secondary link relay communication; The secondary link relay communication service flow receiving device.

20. A relay communication device, characterized in that, include: The first transmission module is used to acquire first information, the first information including configuration information for establishing the first communication bearer; The first execution module is used to establish the bearer of the first communication with the second device based on the first information, and to conduct communication. Wherein, the relay communication device is the source terminal of the first communication, the second device is the destination terminal of the first communication, and the first communication is a secondary link relay communication with N relay devices for data transfer and including N+1 hops, where N is a positive integer; Wherein, the first information includes the second configuration information, or the first information includes the first configuration information and the second configuration information; The first configuration information is the end-to-end configuration information in the carried configuration information; The second configuration information is the hop-to-hop configuration information corresponding to the first target hop between the relay communication device and the third device in the configuration information carried, wherein the third device is the relay device that is directly connected to the relay communication device among the N relay devices.

21. A relay communication method, characterized in that, include: The fourth device acquires third information, which includes configuration information related to the fourth device in the configuration information of the bearer used to establish the first communication; The fourth device establishes a hop-to-hop secondary link bearer for the third target hop based on the third information; Wherein, the first communication is a secondary link relay communication with N relay devices for data relay and including N+1 hops, where N is a positive integer; the fourth device is one of the N relay devices in the first communication; the third target hop is a hop between the fourth device and a downstream device; the downstream device is either a relay device directly connected to the fourth device and located downstream of the fourth device among the N relay devices, or a second device in the first communication; the second device is the destination terminal of the first communication; the third information includes fourth configuration information, which is the configuration information of the third target hop in the carried configuration information.

22. The method according to claim 21, characterized in that, The third information acquired by the fourth device includes: The fourth device receives a fourth message from the upstream device, the fourth message including third configuration information; the third configuration information is the configuration information of the second target hop in the configuration information carried; the second target hop is a hop between the fourth device and the upstream device; the upstream device is a relay device among the N relay devices that is directly connected to the fourth device and located upstream of the fourth device or a first device in the first communication; the first device is the source terminal of the first communication; The fourth device obtains the fourth configuration information based on the third configuration information.

23. The method according to claim 22, characterized in that, The step of obtaining the fourth configuration information based on the third configuration information includes: The fourth configuration information is obtained based on the third configuration information and / or the relevant information of the third target hop in the second information of the first communication, wherein the second information includes service-related information and / or link-related information of the first communication.

24. The method according to claim 21, characterized in that, The third information acquired by the fourth device includes: When the fourth device is in the radio resource control connection state, the fourth device receives a fourth signaling from the network-side device, and the fourth signaling includes the third information.

25. The method according to claim 24, characterized in that, Before receiving the fourth signaling from the network-side device, the method further includes: The fourth device sends information related to the third target hop in the second information of the first communication to the network-side device. The second information includes service-related information and / or link-related information of the first communication.

26. The method according to claim 21, characterized in that, The third information acquired by the fourth device includes: When the fourth device is in a radio resource control idle state or inactive state, the fourth device receives the fifth signaling from the network-side device; The fourth device searches for the third information in the fifth signaling based on the relevant information of the third target hop in the second information of the first communication. The second information includes service-related information and / or link-related information of the first communication.

27. The method according to claim 21, characterized in that, The third information acquired by the fourth device includes: When the fourth device is outside the network coverage area, the fourth device searches for the third information in the sixth signaling based on the relevant information of the third target hop in the second information of the first communication. The second information includes service-related information and / or link-related information of the first communication.

28. The method according to any one of claims 23-27, characterized in that, Before the fourth device acquires the third information, the method further includes: The fourth device obtains the relevant information of the third target hop in the second information of the first communication from the upstream device; the upstream device is either the relay device that is directly connected to the fourth device and located upstream of the fourth device among the N relay devices, or the first device in the first communication.

29. The method according to claim 21, characterized in that, The fourth device establishes a hop-to-hop secondary link bearer for the third target hop based on the third information, including: The fourth device sends a fifth message to the downstream device, the fifth message including the fourth configuration information.

30. The method according to claim 21, characterized in that, The first communication is one of the following: Layer 2 secondary link relay communication; Layer 3 secondary link relay communication.

31. The method according to claim 30, wherein when the first communication is a Layer 2 sublink relay communication, the third configuration information and the fourth configuration information include at least one of the following: Configuration information for the wireless link control layer; Configuration information for the media access control layer; Configuration information for the physical layer.

32. The method according to claim 30, characterized in that, In the case that the first communication is a Layer 3 secondary link relay communication, the third configuration information and the fourth configuration information include at least one of the following: Service data adapts to the configuration information of the protocol layer; Configuration information for the packet data aggregation protocol layer; Configuration information for the wireless link control layer; Configuration information for the media access control layer; Configuration information for the physical layer.

33. A relay communication device, characterized in that, include: The second transmission module is used to acquire third information, which includes configuration information related to the relay communication device in the configuration information of the bearer used to establish the first communication. The second execution module is used to establish the hop-to-hop secondary link bearer of the third target hop based on the third information; Wherein, the first communication is a secondary link relay communication that relays data through N relay devices and includes N+1 hops, where N is a positive integer; the relay communication device is one of the N relay devices in the first communication; the third target hop is a hop between the relay communication device and the downstream device; the downstream device is either a relay device among the N relay devices that is directly connected to the fourth device and located downstream of the fourth device, or a second device in the first communication; the second device is the destination terminal of the first communication; the third information includes fourth configuration information, which is the configuration information of the third target hop in the carried configuration information.

34. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the relay communication method as described in any one of claims 1 to 19.

35. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the relay communication method as described in any one of claims 21 to 32.

36. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the relay communication method as described in any one of claims 1-19, or implement the steps of the relay communication method as described in any one of claims 21-32.

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