A method and apparatus for sidelink wireless communication

Abstract

The present application discloses a method and apparatus for secondary link wireless communication. A first node receives a third wireless signal and a first set of wireless signals, where the third wireless signal includes first information; wherein the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, where Q is a positive integer greater than 1; the first configuration includes a first parameter set; one of the Q node identities is used to identify the sender of the third wireless signal; the first parameter set is used to configure the radio bearer of the first node; the sender of the first set of wireless signals is identified by one of the Q node identities, or the senders of Q1 wireless signals in the first set of wireless signals are respectively identified by Q1 node identities among the Q node identities, where Q1 is a positive integer greater than 1 and not greater than Q. The present application can achieve fast path switching.

Description

Technical Field

[0001] The present application relates to methods and apparatuses in a wireless communication system, and particularly to methods and apparatuses for supporting relay transmission in sidelink wireless communication. Background Art

[0002] Relay, as a multi-hop transmission technology, can improve the throughput at the cell edge and enhance the cell coverage. Taking the sidelink (SL) transmission in the LTE (Long Term Evolution) system as an example, the transmission from the user equipment (UE) to the relay node (RN) uses the sidelink air interface technology, and the transmission from the RN to the base station (eNodeB, eNB) uses the LTE air interface technology. The RN is used for data forwarding between the UE and the eNB, which is called IP (Internet Protocol) layer forwarding or layer 3 relay (Layer 3 Relay / L3 Relay).

[0003] The application scenarios of future wireless communication systems are becoming more and more diversified, and different application scenarios pose different performance requirements on the system. In order to meet the different performance requirements of various application scenarios, it was decided at the 72nd plenary session of 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) to study the NR (New Radio) technology (or Fifth Generation, 5G). At the 75th plenary session of 3GPP RAN, the WI (Work Item) of NR was approved, and the standardization work of NR began. For the rapidly developing V2X (Vehicle-to-Everything) service, 3GPP also started the standardization work and research on SL (Sidelink) under the NR framework. At the 86th plenary session of 3GPP RAN, it was decided to start the SI (Study Item) standardization work on NR SL Relay. Summary of the Invention

[0004] The inventors found through research that introducing a relay node in SL transmission can improve the end-to-end transmission quality and enhance the wireless coverage range. However, since the vehicles in the NR V2X scenario are in a high-speed moving state, the channel state of a single relay link may not necessarily meet the service requirements. At this time, it is necessary to switch the relay link to a new relay node, and how to quickly switch the relay link needs further research.

[0005] In view of the above problems, the present application discloses a solution. In the description of the present application, only the NR V2X scenario is taken as a typical application scenario or example; the present application is also equally applicable to other scenarios outside NR V2X facing similar problems (such as relay networks, D2D (Device-to-Device) networks, cellular networks, scenarios supporting half-duplex user equipment), and similar technical effects in the NR V2X scenario can also be achieved. In addition, adopting a unified solution for different scenarios (including but not limited to the NR V2X scenario, downlink communication scenario, etc.) helps to reduce hardware complexity and cost. Without conflict, the embodiments and features in the first node of the present application can be applied to any other node, and vice versa. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily. In particular, the explanations of the terms, nouns, functions, and variables in the present application (if not specifically stated) can refer to the definitions in the 3GPP specification protocols TS36 series, TS38 series, and TS37 series.

[0006] The present application discloses a method in a first node for use in wireless communication, characterized by including:

[0007] Receiving a third radio signal and a first set of radio signals, the third radio signal including first information;

[0008] Wherein, the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, Q being a positive integer greater than 1; the first configuration includes a first parameter set; one of the Q node identities is used to identify the sender of the third radio signal; the first parameter set is used to configure the radio bearer of the first node; the sender of the first set of radio signals is identified by one of the Q node identities, or the senders of Q1 radio signals in the first set of radio signals are respectively identified by Q1 of the Q node identities, Q1 being a positive integer greater than 1 and not greater than Q; the first set of radio signals includes a first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs.

[0009] As an embodiment, the present application is applicable to the scenario of supporting the configuration of multiple relay nodes in sidelink wireless transmission.

[0010] As an embodiment, the problem to be solved by the present application is: fast end-to-end communication recovery in the case of degraded communication quality caused by UE movement or deteriorated channel conditions.

[0011] As an embodiment, the solution of the present application includes: supporting configuring multiple relay nodes in the UE as candidate relay nodes, and configuring multiple end-to-end paths passing through these relay nodes to have the same bearer and the same high-layer processing entity; after the UE receives data sent from any one of the relay nodes, the UE performs the same high-layer processing.

[0012] As an embodiment, the beneficial effects of the present application include: when one of the relay nodes is unavailable, it is possible to quickly switch to other available relay nodes without reconfiguring the UE, achieving fast path switching; at the same time, forwarding through multiple relay nodes can improve the robustness and throughput of data transmission.

[0013] According to one aspect of the present application, it includes:

[0014] In response to the first information, send a fifth radio signal, where the fifth radio signal includes second information;

[0015] Wherein, the target receiver of the fifth radio signal is the sender of the third radio signal.

[0016] According to one aspect of the present application, it includes:

[0017] Monitor corresponding physical layer signaling for each of the Q node identities in the first time-frequency resource pool;

[0018] Wherein, Q2 pieces of physical layer signaling are detected, the first set of radio signals includes Q2 radio signals, the Q2 pieces of physical layer signaling respectively include scheduling information of the Q2 radio signals, and Q2 is a positive integer.

[0019] According to one aspect of the present application, it includes:

[0020] Send third information, where the third information includes a discovery message;

[0021] Receive a fourth set of information, and determine P candidate node identities according to the fourth set of information;

[0022] Send a seventh radio signal, where the seventh radio signal includes fifth information, and the fifth information includes the P candidate node identities;

[0023] Wherein, any information in the fourth set of information includes a response to the third information; the P candidate node identities include the Q node identities; P is a positive integer not less than Q.

[0024] According to one aspect of the present application, it includes:

[0025] Determine that a first path fails; in response to the failure of the first path, send a ninth radio signal, the ninth radio signal including sixth information indicating the failure of the first path;

[0026] Wherein, the Q node identities include a first node identity; the first path includes a node identified by the first node identity; the target receiver of the ninth radio signal includes a node identified by a node identity other than the first node identity among the Q node identities.

[0027] According to one aspect of the present application, it includes:

[0028] For any MAC SDU included in the first MAC SDU set, distribute the any MAC SDU to the target RLC entity of the first node according to the LCID of the any MAC SDU;

[0029] Wherein, the target RLC entity of the first node has nothing to do with the node identity of the sender of the any MAC SDU.

[0030] The present application discloses a method in a second node for wireless communication, characterized by including:

[0031] Send a fourth radio signal and a second set of radio signals, the fourth radio signal including first information;

[0032] Wherein, the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, Q being a positive integer greater than 1; the first configuration includes a first parameter set; one of the Q node identities is used to identify the target receiver of the fourth radio signal; the second set of radio signals includes a first MAC SDU set, the first MAC SDU set being used to generate a first set of radio signals; the first parameter set is used to configure the radio bearer of the target receiver of the first MAC SDU set, the first parameter set being applicable to the first MAC SDU set; the sender of the first set of radio signals is identified by one of the Q node identities, or the senders of Q1 radio signals in the first set of radio signals are respectively identified by Q1 of the Q node identities, Q1 being a positive integer greater than 1 and not greater than Q.

[0033] According to one aspect of the present application, it includes:

[0034] Receive a sixth radio signal, the sixth radio signal including second information;

[0035] Wherein, the second information includes a response to the first information; the sender of the sixth radio signal is the target receiver of the fourth radio signal.

[0036] According to one aspect of the present application, it includes:

[0037] Physical layer signaling corresponding to each of the Q node identities is monitored in the first time-frequency resource pool;

[0038] Wherein, Q2 physical layer signals are detected, the first radio signal set includes Q2 radio signals, the Q2 physical layer signals respectively include scheduling information of the Q2 radio signals, and Q2 is a positive integer.

[0039] According to one aspect of the present application, it includes:

[0040] Receive an eighth radio signal, the eighth radio signal includes fifth information, and the fifth information includes P candidate node identities;

[0041] Wherein, the P candidate node identities include the Q node identities; P is a positive integer not less than Q.

[0042] According to one aspect of the present application, it includes:

[0043] Receive a tenth radio signal, the tenth radio signal includes sixth information;

[0044] Wherein, the sixth information indicates a failure of the first path; the Q node identities include a first node identity; the first path includes a node identified by the first node identity; the sender of the tenth radio signal includes a node identified by a node identity other than the first node identity among the Q node identities.

[0045] According to one aspect of the present application, it includes:

[0046] Any MAC SDU included in the first MAC SDU set comes from the RLC entity of the second node, and the LCIDs of any MAC SDU are the same;

[0047] Wherein, the RLC entity of the second node has nothing to do with the node identity of the receiver of any MAC SDU.

[0048] According to one aspect of the present application, it includes:

[0049] Send an eighth information set, the eighth information set includes a second configuration, and the second configuration includes a second parameter set;

[0050] Wherein, the second parameter set is used to configure radio bearers of Q nodes identified by the Q node identities.

[0051] This application discloses a method in a third node for wireless communication, characterized by including:

[0052] Receiving a fourth radio signal and an eleventh radio signal, where the eleventh radio signal belongs to a second set of radio signals;

[0053] Sending a third radio signal and a twelfth radio signal, where the twelfth radio signal belongs to a first set of radio signals;

[0054] Wherein, the third radio signal and the fourth radio signal respectively include first information, and the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, where Q is a positive integer greater than 1; the first configuration includes a first parameter set; the first parameter set is used to configure radio bearers of a target receiver of the twelfth radio signal; the third node is identified by one of the Q node identities, or senders of Q1 radio signals in the first set of radio signals are respectively identified by Q1 of the Q node identities and the third node is identified by one of the Q1 node identities, where Q1 is a positive integer greater than 1 and not greater than Q; the first set of radio signals and the second set of radio signals respectively include a first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs.

[0055] According to one aspect of this application, it includes:

[0056] Receiving a fifth radio signal;

[0057] Sending a sixth radio signal;

[0058] Wherein, the fifth radio signal and the sixth radio signal respectively include second information; the second information includes a response to the first information.

[0059] According to one aspect of this application, it includes:

[0060] Monitoring physical layer signaling corresponding to each of the Q node identities in a first time-frequency resource pool;

[0061] Wherein, Q2 pieces of physical layer signaling are detected, the first set of radio signals includes Q2 radio signals, and the Q2 pieces of physical layer signaling respectively include scheduling information of the Q2 radio signals, where Q2 is a positive integer.

[0062] According to one aspect of this application, it includes:

[0063] Receive a third piece of information and a seventh radio signal, where the third piece of information includes a discovery message;

[0064] Send a seventh piece of information and an eighth radio signal, where the seventh piece of information belongs to a fourth set of information;

[0065] Wherein, the fourth set of information is used to determine the identities of P candidate nodes; the seventh piece of information includes a response to the third piece of information; the seventh radio signal and the eighth radio signal respectively include a fifth piece of information, and the fifth piece of information includes the identities of the P candidate nodes; the identities of the P candidate nodes include the identities of the Q nodes; P is a positive integer not less than Q.

[0066] According to one aspect of the present application, it includes:

[0067] Receive a ninth radio signal;

[0068] Send a tenth radio signal;

[0069] Wherein, the ninth radio signal and the tenth radio signal respectively include a sixth piece of information, and the sixth piece of information indicates a failure of a first path; the identities of the Q nodes include a first node identity; the first path includes a node identified by the first node identity; the third node is a node identified by a node identity other than the first node identity among the identities of the Q nodes.

[0070] According to one aspect of the present application, it includes:

[0071] For a first MAC SDU included in the eleventh radio signal, distribute the first MAC SDU to the RLC entity of the third node according to the LCID of the first MAC SDU; the first MAC SDU is used to generate the twelfth radio signal;

[0072] Wherein, the RLC entity of the third node caches the first MAC SDU; the first MAC SDU belongs to the first set of MAC SDUs.

[0073] According to one aspect of the present application, it includes:

[0074] Receive a ninth piece of information, where the ninth piece of information belongs to an eighth set of information; the ninth piece of information includes a second configuration, and the second configuration includes a second parameter set;

[0075] Wherein, the second parameter set is used to configure the radio bearer of the third node.

[0076] The present application discloses a first node for wireless communication, characterized by including:

[0077] A first receiver, receiving a third radio signal and a first set of radio signals, the third radio signal including first information;

[0078] Wherein, the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, Q being a positive integer greater than 1; the first configuration includes a first parameter set; one of the Q node identities is used to identify the sender of the third radio signal; the first parameter set is used to configure the radio bearer of the first node; the sender of the first set of radio signals is identified by one of the Q node identities, or the senders of Q1 radio signals in the first set of radio signals are respectively identified by Q1 of the Q node identities, Q1 being a positive integer greater than 1 and not greater than Q; the first set of radio signals includes a first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs.

[0079] This application discloses a second node for use in wireless communication, characterized by including:

[0080] A second transmitter, transmitting a fourth radio signal and a second set of radio signals, the fourth radio signal including first information;

[0081] Wherein, the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, Q being a positive integer greater than 1; the first configuration includes a first parameter set; one of the Q node identities is used to identify the target receiver of the fourth radio signal; the second set of radio signals includes a first set of MAC SDUs, the first set of MAC SDUs being used to generate the first set of radio signals; the first parameter set is used to configure the radio bearer of the target receiver of the first set of MAC SDUs, the first parameter set being applicable to the first set of MAC SDUs; the sender of the first set of radio signals is identified by one of the Q node identities, or the senders of Q1 radio signals in the first set of radio signals are respectively identified by Q1 of the Q node identities, Q1 being a positive integer greater than 1 and not greater than Q.

[0082] This application discloses a third node for use in wireless communication, characterized by including:

[0083] A third receiver, receiving a fourth radio signal and an eleventh radio signal, the eleventh radio signal belonging to the second set of radio signals;

[0084] A third transmitter that sends a third wireless signal and a twelfth wireless signal, where the twelfth wireless signal belongs to a first set of wireless signals;

[0085] Wherein, the third wireless signal and the fourth wireless signal respectively include first information, and the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, where Q is a positive integer greater than 1; the first configuration includes a first parameter set; the first parameter set is used to configure the radio bearer of the target receiver of the twelfth wireless signal; the third node is identified by one of the Q node identities, or the senders of Q1 wireless signals in the first set of wireless signals are respectively identified by Q1 of the Q node identities and the third node is identified by one of the Q1 node identities, where Q1 is a positive integer greater than 1 and not greater than Q; the first set of wireless signals and the second set of wireless signals respectively include a first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs.

[0086] As an embodiment, the method in this application has the following advantages:

[0087] - This application is applicable to scenarios that support configuring multiple relay nodes in sidelink wireless transmission;

[0088] - The problem of this application is the fast end-to-end communication recovery in case of degraded communication quality caused by UE movement or deteriorated channel state;

[0089] - By using the method in this application, it supports configuring multiple relay nodes as candidate relay nodes for the UE and configuring multiple end-to-end paths passing through these relay nodes to have the same bearer and the same high-layer processing entity; after the UE receives data sent from any one of the relay nodes, it performs the same high-layer processing;

[0090] - By using the method of this application, when one of the relay nodes is unavailable, it can quickly switch to other available relay nodes without reconfiguring the UE, realizing fast path switching; at the same time, forwarding through multiple relay nodes can improve the robustness and throughput of data transmission. Description of the Drawings

[0091] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objectives and advantages of this application will become more obvious:

[0092] Figure 1 A flowchart of the third wireless signal and the first set of wireless signals according to an embodiment of this application is illustrated;

[0093] Figure 2Schematic diagram of a network architecture according to an embodiment of the present application;

[0094] Figure 3 Schematic diagram of a radio protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0095] Figure 4 Schematic diagram of a hardware module of a communication device according to an embodiment of the present application;

[0096] Figure 5 Schematic diagram of another hardware module of a communication device according to an embodiment of the present application;

[0097] Figure 6 Schematic diagram of a radio signal transmission flowchart according to an embodiment of the present application;

[0098] Figure 7 Schematic diagram of another process of a radio signal according to an embodiment of the present application;

[0099] Figure 8 Schematic diagram of a source sender, a sender, a receiver, and a target receiver according to an embodiment of the present application;

[0100] Figure 9 Format diagram of a first MAC SDU and a first MAC PDU according to an embodiment of the present application;

[0101] Figure 10 Schematic diagram of a radio protocol architecture of a user plane of a first node, a second node, and a third node according to an embodiment of the present application;

[0102] Figure 11 Structural block diagram of a processing device in a first node according to an embodiment of the present application;

[0103] Figure 12 Structural block diagram of a processing device in a second node according to an embodiment of the present application;

[0104] Figure 13 Structural block diagram of a processing device in a third node according to an embodiment of the present application. Detailed implementation manners

[0105] The technical solutions of the present application will be further described in detail below with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

[0106] Example 1

[0107] Embodiment 1 exemplifies a flowchart of a third wireless signal and a first set of wireless signals according to an embodiment of the present application, as shown in the appendix Figure 1 as follows.

[0108] In Embodiment 1, the first node 100 in the present application receives a third wireless signal and a first set of wireless signals in step 101. The third wireless signal includes first information. Among them, the first information includes a node identity group and a first configuration. The node identity group includes Q node identities, where Q is a positive integer greater than 1. The first configuration includes a first parameter set. One of the Q node identities is used to identify the sender of the third wireless signal. The first parameter set is used to configure the radio bearer of the first node. The sender of the first set of wireless signals is identified by one of the Q node identities, or the senders of Q1 wireless signals in the first set of wireless signals are respectively identified by Q1 of the Q node identities, where Q1 is a positive integer greater than 1 and not greater than Q. The first set of wireless signals includes a first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs.

[0109] As an embodiment, the first node receives the third wireless signal and the first set of wireless signals.

[0110] As an embodiment, the sender of the third wireless signal is the third node in the present application.

[0111] As an embodiment, the third wireless signal is transmitted through the PC5 interface.

[0112] As an embodiment, the third wireless signal is transmitted through SL.

[0113] As an embodiment, the third wireless signal is a PSSCH (Physical Sidelink Shared Channel).

[0114] As an embodiment, the third wireless signal is transmitted through an SL-SRB (Signaling Radio Bearer).

[0115] As an embodiment, the third wireless signal is transmitted through SL-SRB3.

[0116] As an embodiment, the time-frequency resources occupied by the third wireless signal belong to the V2X resource pool.

[0117] As an embodiment, the time-frequency resources occupied by the third wireless signal are reserved for sidelink transmission.

[0118] As an embodiment, the senders of the first wireless signal set are the same.

[0119] As an embodiment, the first wireless signal set includes at least two wireless signals; the senders of the at least two wireless signals in the first wireless signal set are different.

[0120] As an embodiment, the first wireless signal set includes at least one wireless signal.

[0121] As an embodiment, the first wireless signal set includes the twelfth wireless signal.

[0122] As an embodiment, the first wireless signal set is transmitted through a wireless interface.

[0123] As an embodiment, the first wireless signal set is transmitted through a PC5 interface.

[0124] As an embodiment, the first wireless signal set is transmitted through SL.

[0125] As an embodiment, any one of the wireless signals in the first wireless signal set occupies a PSSCH.

[0126] As an embodiment, any one of the wireless signals in the first wireless signal set occupies a physical layer channel.

[0127] As an embodiment, any one of the wireless signals in the first wireless signal set is transmitted through a DRB (Data Radio Bearer).

[0128] As an embodiment, the first wireless signal set includes at least two wireless signals; any two wireless signals in the first wireless signal set are received in different sidelink time slots.

[0129] As an embodiment, the first wireless signal set includes at least two wireless signals; at least two wireless signals in the first wireless signal set are received in the same sidelink time slot.

[0130] As an embodiment, the first wireless signal set includes at least two wireless signals; any two wireless signals in the first wireless signal set carry different information bits.

[0131] As an embodiment, the first wireless signal set includes at least two wireless signals; any two wireless signals in the first wireless signal set carry different transport blocks.

[0132] As an embodiment, the time-frequency resources occupied by the first wireless signal set belong to the V2X resource pool.

[0133] As an embodiment, the time-frequency resources occupied by the first wireless signal set are reserved for sidelink transmission.

[0134] As an embodiment, the third wireless signal and any wireless signal in the first wireless signal set are received in different sidelink time slots.

[0135] As an embodiment, the first information includes RRC (Radio Resource Control) information.

[0136] As an embodiment, the first information includes PC5-RRC information.

[0137] As an embodiment, the first information includes all or part of the IEs (Information Elements) in an RRC information.

[0138] As an embodiment, the first information includes all or part of the fields in an IE in an RRC information.

[0139] As an embodiment, the first information includes RRCReconfigurationSidelink.

[0140] As an embodiment, the first information includes RRCReconfigurationResponseSidelink.

[0141] As an embodiment, the first information includes RRCReconfigurationRequestSidelink.

[0142] As an embodiment, the first information includes SL-ConfigDedicatedNR.

[0143] As an embodiment, the first information includes PC5-S (PC5-Signaling) information.

[0144] As an embodiment, the first information is processed by a higher layer protocol to generate a first bit block.

[0145] As an embodiment, all or part of the first bit block is used to generate the third wireless signal.

[0146] As an embodiment, all or part of the first bit block is used together with the reference signal to generate the third radio signal.

[0147] As an embodiment, all bits or part of the bits of the first bit block sequentially go through CRC calculation (CRC Calculation), channel coding (Channel Coding), rate matching (Rate matching), scrambling (Scrambling), modulation (Modulation), layer mapping (Layer Mapping), antenna port mapping (Antenna Port Mapping), mapping to virtual resource blocks (Mapping to Virtual Resource Blocks), mapping from virtual resource blocks to physical resource blocks (Mapping from Virtual to Physical Resource Blocks), OFDM baseband signal generation (OFDM Baseband Signal Generation), modulation and upconversion (Modulation and Upconversion) to obtain the third radio signal.

[0148] As an embodiment, the first information includes a node identity group and a first configuration.

[0149] As an embodiment, the node identity group is a field in the first information.

[0150] As an embodiment, the node identity group is the RelayList (relay group) field in the first information.

[0151] As an embodiment, the node identity group is the SL-RelayList (sidelink relay group) field in the first information.

[0152] As an embodiment, the node identity group includes Q node identities, where Q is a positive integer greater than 1 and not greater than 64.

[0153] As an embodiment, the number of bits included in any one of the Q node identities is a positive integer multiple of 8.

[0154] As an embodiment, the number of bits included in any one of the Q node identities is 8.

[0155] As an embodiment, the number of bits included in any one of the Q node identities is 24.

[0156] As an embodiment, any one of the Q node identities is a link layer identity.

[0157] As an example, any one of the Q node identities is a Layer 2 Identity.

[0158] As an example, the Q node identities respectively indicate Q relay nodes.

[0159] As an example, any one of the Q node identities indicates a node.

[0160] As an example, the sender of the third radio signal includes a node identified by one of the Q node identities; the third radio signal includes partial bits of the one node identity; the scheduling information of the third radio signal includes the remaining bits of the one node identity.

[0161] As an example, the sender of the third radio signal includes a node identified by one of the Q node identities; the third radio signal includes the high 16 bits of the one node identity; the scheduling information of the third radio signal includes the low 8 bits of the one node identity.

[0162] As an example, the scheduling information of the third radio signal is included in the physical layer signaling.

[0163] As an example, the scheduling information of the third radio signal includes SCI (Sidelink Control Information).

[0164] As an example, the first configuration is a field in the first information.

[0165] As an example, the first configuration is the SLRB-Config (Sidelink Radio Bearer Configuration) field in the first information.

[0166] As an example, the first configuration is the slrb-ConfigToAddModList (Sidelink Radio Bearer - Add / Modify Configuration List) field in the first information.

[0167] As an example, the first parameter set includes at least one of SDAP (Service Data Adaptation Protocol) configuration parameters, PDCP (Packet Data Convergence Protocol) configuration parameters, RLC (Radio Link Control) configuration parameters, or MAC (Medium Access Control) configuration parameters.

[0168] As an example, the first parameter set is used to configure the radio bearer of the first node.

[0169] As an example, the radio bearer of the first node is bi-directional.

[0170] As an example, the first parameter set includes a first radio bearer identifier (bearer ID), and the first radio bearer identifier indicates the radio bearer of the first node.

[0171] As an example, the first bearer identifier indicates an end-to-end (Peer-to-Peer) radio bearer.

[0172] As an example, the first parameter set includes the LCID corresponding to the radio bearer of the first node.

[0173] As an example, the radio bearer of the first node corresponds to a higher layer entity of the first node.

[0174] As an example, the LCID corresponding to the radio bearer of the first node is used to determine the higher layer entity that processes the data packets belonging to the radio bearer.

[0175] As an example, the LCID corresponding to the radio bearer of the first node is used to determine the RLC entity that processes the MAC SDU belonging to the radio bearer.

[0176] As an example, the first parameter set is used to configure the higher layer entity corresponding to the radio bearer of the first node.

[0177] As an example, the higher layer entity corresponding to the radio bearer of the first node includes at least one of an SDAP entity, a PDCP entity, an RLC entity, or a MAC entity.

[0178] As an example, the radio bearer of the first node is used to transmit the service to which the first set of MAC SDUs (Service Data Units) belongs.

[0179] As an example, the radio bearer of the first node is used to transmit the QoS

[0180] (Quality of Service) flow to which the first set of MAC SDUs belongs.

[0181] As an example, the radio bearer of the first node is used to transmit the PC5 QoS flow to which the first set of MAC SDUs belongs.

[0182] As an example, the radio bearer of the first node is a DRB.

[0183] As an example, the radio bearer of the first node is an SL-SRB.

[0184] As an example, the radio bearer of the first node is an SL-RLC bearer.

[0185] As an example, the radio bearer of the first node is a PDCP bearer.

[0186] As an example, the radio bearer of the first node is an SDAP bearer.

[0187] As an example, the first parameter set is applicable to the first set of MAC SDUs.

[0188] As an example, the first set of MAC SDUs is processed by the SDAP entity, the PDCP entity, and the RLC entity of the first node.

[0189] As an example, the first set of MAC SDUs is processed by the PDCP entity and the RLC entity of the first node.

[0190] As an example, the sender of the first set of radio signals is identified by one of the Q node identities.

[0191] As an example, the sender of the first set of radio signals and the sender of the third radio signal are identified by the same one of the Q node identities.

[0192] As an example, the sender of any wireless signal in the first wireless signal set is identified by one of the Q node identities; any of the wireless signals includes partial bits of the one node identity; the scheduling information of any of the wireless signals includes the remaining bits of the one node identity; the scheduling information of any of the wireless signals includes SCI.

[0193] As an example, the senders of Q1 wireless signals in the first wireless signal set are respectively identified by Q1 of the Q node identities; any two of the Q1 node identities are different.

[0194] As an example, any two of the Q1 wireless signals in the first wireless signal set are received in different sidelink time slots.

[0195] As an example, at least two of the Q1 wireless signals in the first wireless signal set are received in the same sidelink time slot.

[0196] As an example, the senders of the wireless signals in the first wireless signal set other than the Q1 wireless signals are identified by the node identities in the Q node identities other than the Q1 node identities.

[0197] As an example, the sender of at least one of the wireless signals in the first wireless signal set other than the Q1 wireless signals is identified by one of the Q1 node identities in the Q node identities.

[0198] As an example, the first wireless signal set includes a first MAC SDU set.

[0199] As an example, the first MAC SDU set includes at least one MAC SDU.

[0200] As an example, the first wireless signal set includes at least two wireless signals; any two of the wireless signals in the first wireless signal set include different MAC SDUs.

[0201] As an example, the first wireless signal set includes at least two wireless signals; at least two of the wireless signals in the first wireless signal set include the same MAC SDU.

[0202] Example 2

[0203] Embodiment 2 exemplifies a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the appendix Figure 2 as follows. Figure 2Describes the V2X communication architecture under the NR 5G, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) system architectures. The NR 5G or LTE or LTE-A network architecture can be referred to as 5GS (5G System) / EPS (Evolved Packet System) or some other suitable term.

[0204] The V2X communication architecture of Embodiment 2 includes a UE (User Equipment) 201, a UE 241, an NG-RAN (Next Generation Radio Access Network) 202, a 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, an HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, a ProSe function 250, and a ProSe application server 230. The V2X communication architecture can be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, the V2X communication architecture provides packet-switched services. However, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks that provide circuit-switched services or other cellular networks. The NG-RAN includes an NR node B (gNB) 203 and other gNBs 204. The gNB 203 provides user and control plane protocol termination towards the UE 201. The gNB 203 can be connected to other gNBs 204 via an Xn interface (e.g., backhaul). The gNB 203 can also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP (Transmitting and Receiving Point), or some other suitable term. In an NTN network, the gNB 203 can be a satellite, an aircraft, or a terrestrial base station relayed by a satellite. The gNB 203 provides an access point to the 5GC / EPC 210 for the UE 201. Examples of the UE 201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, machine type communication devices, land vehicles, automobiles, in-vehicle devices, in-vehicle communication units, wearable devices, or any other similar functional device. Those skilled in the art may also refer to the UE 201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term. The gNB 203 is connected to the 5GC / EPC 210 via an S1 / NG interface.The 5GC / EPC 210 includes an MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMFs 214, an S-GW (Service Gateway) / UPF (User Plane Function) 212, and a P-GW (Packet Date Network Gateway) / UPF 213. The MME / AMF / SMF 211 is a control node that processes signaling between the UE 201 and the 5GC / EPC 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW / UPF 212, which is itself connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF 213 is connected to Internet services. The Internet services include operator-corresponding Internet protocol services, specifically including the Internet, intranet, IMS (IP Multimedia Subsystem), and PS (Packet Switching) streaming services. The ProSe function 250 is a logical function for network-related behaviors required for proximity services (ProSe, Proximity-based Service); it includes a DPF (Direct Provisioning Function), a direct discovery name management function, an EPC-level discovery ProSe function, etc. The ProSe application server 230 has functions such as storing EPC ProSe user identifiers, mapping between application-layer user identifiers and EPC ProSe user identifiers, and allocating a ProSe-restricted code suffix pool.

[0205] As an example, the UE 201 corresponds to the first node in this application, and the UE 241 corresponds to the third node in this application.

[0206] As an example, the UE 201 corresponds to the second node in this application, and the UE 241 corresponds to the third node in this application.

[0207] As an example, the UE201 and the UE241 respectively support transmissions in SL.

[0208] As an example, the UE201 and the UE241 respectively support the PC5 interface.

[0209] As an example, the UE201 and the UE241 respectively support vehicle-to-everything (V2X).

[0210] As an example, the UE201 and the UE241 respectively support V2X services.

[0211] As an example, the UE201 and the UE241 respectively support device-to-device (D2D) services.

[0212] As an example, the UE201 and the UE241 respectively support public safety services.

[0213] As an example, the gNB203 supports vehicle-to-everything (V2X).

[0214] As an example, the gNB203 supports V2X services.

[0215] As an example, the gNB203 supports device-to-device (D2D) services.

[0216] As an example, the gNB203 supports public safety services.

[0217] As an example, the gNB203 is a macro cell base station.

[0218] As an example, the gNB203 is a micro cell base station.

[0219] As an example, the gNB203 is a pico cell base station.

[0220] As an example, the gNB203 is a femtocell.

[0221] As an example, the gNB203 is a base station device that supports large time delay differences.

[0222] As an example, the gNB203 is an airborne platform device.

[0223] As an example, the gNB203 is a satellite device.

[0224] As an example, the radio link from the UE201 to the gNB203 is an uplink.

[0225] As an example, the radio link from the gNB203 to the UE201 is a downlink.

[0226] As an example, the radio link between the UE201 and the UE241 corresponds to the sidelink in this application.

[0227] As an example, the UE201 and the gNB203 are connected through the Uu interface.

[0228] As an example, the UE201 and the UE241 are connected through the PC5 reference point.

[0229] As an example, the ProSe function 250 is connected to the UE201 and the UE241 respectively through the PC3 reference point.

[0230] As an example, the ProSe function 250 is connected to the ProSe application server 230 through the PC2 reference point.

[0231] As an example, the ProSe application server 230 is connected to the ProSe applications of the UE201 and the UE241 respectively through the PC1 reference point.

[0232] Example 3

[0233] Embodiment 3 exemplifies a schematic diagram of the radio protocol architecture of the user plane and the control plane according to an embodiment of the present application, as shown in the appendix Figure 3 as follows. Figure 3 It is a schematic diagram illustrating an embodiment of the radio protocol architecture for the user plane 350 and the control plane 300. Figure 3The radio protocol architecture of the control plane 300 of the UE and the gNB is shown in three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (Physical Layer) signal processing functions. Layer 1 will be referred to as PHY 301 in this article. Layer 2 (L2 layer) 305 is above PHY 301 and is responsible for the link between the UE and the gNB through PHY 301. Layer 2 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, and these sublayers terminate at the gNB on the network side. The PDCP sublayer 304 provides data encryption and integrity protection. The PDCP sublayer 304 also provides handover support for the UE between gNBs. The RLC sublayer 303 provides segmentation and reassembly of data packets, retransmits lost data packets through ARQ, and the RLC sublayer 303 also provides duplicate packet detection and protocol error detection. The MAC sublayer 302 provides the mapping between logical and transport channels and the multiplexing of logical channel identities. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell among UEs. The MAC sublayer 302 is also responsible for HARQ (Hybrid Automatic Repeat Request) operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3 layer) of the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the gNB and the UE. Although not shown, there may also be a V2X layer above the RRC sublayer 306 in the control plane 300 of the UE. The V2X layer is responsible for generating a PC5 QoS parameter set and QoS rules according to the received service data or service request, generating a PC5 QoS flow corresponding to the PC5 QoS parameter set, and sending the PC5 QoS flow identifier and the corresponding PC5 QoS parameter set to the AS (Access Stratum) layer for QoS processing of data packets belonging to the PC5 QoS flow identifier by the AS layer; the V2X layer also includes a PC5-S signaling protocol sublayer, and the V2X layer is responsible for indicating to the AS layer whether each transmission is a PC5-S transmission or a V2X service data transmission.The radio protocol architecture of the user plane 350 includes Layer 1 (L1) and Layer 2 (L2). The radio protocol architecture in the user plane 350 is generally the same as the corresponding layers and sub-layers in the control plane 300 for the physical layer 351, the PDCP sub-layer 354 in the L2 layer 355, the RLC sub-layer 353 in the L2 layer 355, and the MAC sub-layer 352 in the L2 layer 355. However, the PDCP sub-layer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sub-layer 356. The SDAP sub-layer 356 is responsible for the mapping between QoS (Quality of Service) flows and data radio bearers (DRBs, Data Radio Bearer) to support service diversity. The radio protocol architecture of the UE in the user plane 350 may include some or all of the protocol sub-layers of the SDAP sub-layer 356, the PDCP sub-layer 354, the RLC sub-layer 353, and the MAC sub-layer 352 in the L2 layer. Although not shown, the UE may also have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., a remote UE, a server, etc.).

[0234] As an embodiment, the ninth radio signal in the present application is generated by the PHY301 or PHY351.

[0235] As an embodiment, the tenth radio signal in the present application is generated by the PHY301 or PHY351.

[0236] As an embodiment, the eleventh radio signal in the present application is generated by the PHY301 or PHY351.

[0237] As an embodiment, the twelfth radio signal in the present application is generated by the PHY301 or PHY351.

[0238] As an embodiment, the first information in the present application is generated by the RRC306.

[0239] As an embodiment, the first information in the present application is generated by the PC5-S.

[0240] As an embodiment, the second information in the present application is generated by the RRC306.

[0241] As an embodiment, the second information in the present application is generated by the PC5-S.

[0242] As an embodiment, the third information in the present application is generated in the RRC 306.

[0243] As an embodiment, the third information in the present application is generated in the PC5-S.

[0244] As an embodiment, the fourth information set in the present application is generated in the RRC 306.

[0245] As an embodiment, the fourth information set in the present application is generated in the PC5-S.

[0246] As an embodiment, the fifth information in the present application is generated in the RRC 306.

[0247] As an embodiment, the fifth information in the present application is generated in the PC5-S.

[0248] As an embodiment, the sixth information in the present application is generated in the RRC 306.

[0249] As an embodiment, the sixth information in the present application is generated in the PC5-S.

[0250] As an embodiment, the seventh information in the present application is generated in the RRC 306.

[0251] As an embodiment, the seventh information in the present application is generated in the PC5-S.

[0252] As an embodiment, the eighth information set in the present application is generated in the RRC 306.

[0253] As an embodiment, the eighth information set in the present application is generated in the PC5-S.

[0254] As an embodiment, the ninth information in the present application is generated in the RRC 306.

[0255] As an embodiment, the ninth information in the present application is generated in the PC5-S.

[0256] As an embodiment, the L2 layer 305 belongs to a higher layer.

[0257] As an embodiment, the RRC sub-layer 306 in the L3 layer belongs to a higher layer.

[0258] As an embodiment, the V2X layer belongs to the NAS (Non-Access Stratum).

[0259] As an example, the V2X layer belongs to the upper layer.

[0260] As an example, PC5-S in the V2X layer belongs to the upper layer.

[0261] Example 4

[0262] Example 4 illustrates a schematic diagram of the hardware modules of a communication device according to an embodiment of the present application, as shown in the appendix Figure 4 as follows. Figure 4 It is a block diagram of a first communication device 450 and a third communication device 410 that communicate with each other in an access network.

[0263] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmitting processor 468, a receiving processor 456, a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0264] The third communication device 410 includes a controller / processor 475, a memory 476, a data source 477, a receiving processor 470, a transmitting processor 416, a multi-antenna receiving processor 472, a multi-antenna transmitting processor 471, a transmitter / receiver 418, and an antenna 420.

[0265] In the transmission from the third communication device 410 to the first communication device 450, at the third communication device 410, upper layer data packets from the core network or from the data source 477 are provided to the controller / processor 475. The core network and the data source 477 represent all protocol layers above the L2 layer. The controller / processor 475 implements the functionality of the L2 layer. In the transmission from the third communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation for the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements encoding and interleaving to facilitate forward error correction (FEC) at the third communication device 410, and mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital space precoding on the encoded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to subcarriers, multiplexes with reference signals (e.g., pilots) in the time domain and / or frequency domain, and then uses the inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. Subsequently, the multi-antenna transmit processor 471 performs transmit analog precoding / beamforming operations on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream and then provides it to different antennas 420.

[0266] In the transmission from the third communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives signals via its respective antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream provided to the receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 perform various signal processing functions of the L1 layer. The multi-antenna receive processor 458 performs receive analog precoding / beamforming operations on the baseband multi-carrier symbol stream from the receivers 454. The receive processor 456 uses the fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receive processor 456, where the reference signal will be used for channel estimation, and the data signal recovers any spatial streams destined for the first communication device 450 after multi-antenna detection in the multi-antenna receive processor 458. The symbols on each spatial stream are demodulated and recovered in the receive processor 456, and soft decisions are generated. Subsequently, the receive processor 456 decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the third communication device 410 on the physical channel. Subsequently, the upper layer data and control signals are provided to the controller / processor 459. The controller / processor 459 performs the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program code and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the third communication device 410 to the first communication device 450, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the third communication device 410. Subsequently, the upper layer data packets are provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 for L3 processing.

[0267] In the transmission from the first communication device 450 to the third communication device 410, at the first communication device 450, an upper layer data packet is provided to the controller / processor 459 using the data source 467. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function described at the third communication device 410 in the transmission from the third communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels, and implements L2 layer functions for the user plane and the control plane. The controller / processor 459 is also responsible for retransmission of lost packets and signaling to the third communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing. The multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Subsequently, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, and after analog precoding / beamforming operations in the multi-antenna transmit processor 457, it is provided to different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and then provides it to the antenna 452.

[0268] In the transmission from the first communication device 450 to the third communication device 410, the functions at the third communication device 410 are similar to the reception functions described at the first communication device 450 in the transmission from the third communication device 410 to the first communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna receive processor 472 and the receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 jointly implement the L1 layer functions. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the third communication device 410, the controller / processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper layer data packet from the first communication device 450. The upper layer data packet from the controller / processor 475 may be provided to the core network or all protocol layers above the L2 layer, and various control signals may also be provided to the core network or L3 for L3 processing.

[0269] As an embodiment, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor, and the first communication device 450 is at least configured to: receive a third wireless signal and a first set of wireless signals, the third wireless signal including first information; wherein, the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, Q being a positive integer greater than 1; the first configuration includes a first parameter set; one of the Q node identities is used to identify the sender of the third wireless signal; the first parameter set is used to configure the radio bearer of the first node; the sender of the first set of wireless signals is identified by one of the Q node identities, or the senders of Q1 wireless signals in the first set of wireless signals are respectively identified by Q1 of the Q node identities, Q1 being a positive integer greater than 1 and not greater than Q; the first set of wireless signals includes a first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs.

[0270] As an embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating actions when executed by at least one processor, the actions including: receiving a third wireless signal and a first set of wireless signals, the third wireless signal including first information; wherein, the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, Q being a positive integer greater than 1; the first configuration includes a first parameter set; one of the Q node identities is used to identify the sender of the third wireless signal; the first parameter set is used to configure the radio bearer of the first node; the sender of the first set of wireless signals is identified by one of the Q node identities, or the senders of Q1 wireless signals in the first set of wireless signals are respectively identified by Q1 of the Q node identities, Q1 being a positive integer greater than 1 and not greater than Q; the first set of wireless signals includes a first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs.

[0271] As an embodiment, the third communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The third communication device 410 is at least configured to: receive a fourth wireless signal and an eleventh wireless signal, the eleventh wireless signal belonging to a second set of wireless signals; send a third wireless signal and a twelfth wireless signal, the twelfth wireless signal belonging to a first set of wireless signals; wherein, the third wireless signal and the fourth wireless signal respectively include first information, the first information including a node identity group and a first configuration; the node identity group includes Q node identities, Q being a positive integer greater than 1; the first configuration includes a first parameter set; the first parameter set is used to configure the radio bearer of the target receiver of the twelfth wireless signal; the third node is identified by one of the Q node identities, or the senders of Q1 wireless signals in the first set of wireless signals are respectively identified by Q1 of the Q node identities and the third node is identified by one of the Q1 node identities, Q1 being a positive integer greater than 1 and not greater than Q; the first set of wireless signals and the second set of wireless signals respectively include a first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs.

[0272] As an embodiment, the third communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating actions when executed by at least one processor, the actions including: receiving a fourth wireless signal and an eleventh wireless signal, the eleventh wireless signal belonging to a second set of wireless signals; sending a third wireless signal and a twelfth wireless signal, the twelfth wireless signal belonging to a first set of wireless signals; wherein, the third wireless signal and the fourth wireless signal respectively include first information, the first information including a node identity group and a first configuration; the node identity group includes Q node identities, Q being a positive integer greater than 1; the first configuration includes a first parameter set; the first parameter set is used to configure the radio bearer of the target receiver of the twelfth wireless signal; the third node is identified by one of the Q node identities, or the senders of Q1 wireless signals in the first set of wireless signals are respectively identified by Q1 of the Q node identities and the third node is identified by one of the Q1 node identities, Q1 being a positive integer greater than 1 and not greater than Q; the first set of wireless signals and the second set of wireless signals respectively include a first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs.

[0273] As an example, the first communication device 450 corresponds to the first node in the present application.

[0274] As an example, the third communication device 410 corresponds to the third node in the present application.

[0275] As an example, the first communication device 450 is a UE.

[0276] As an example, the first communication device 450 is a user equipment supporting V2X.

[0277] As an example, the first communication device 450 is a user equipment supporting D2D.

[0278] As an example, the first communication device 450 is an in-vehicle device.

[0279] As an example, the first communication device 450 is an RSU.

[0280] As an example, the third communication device 410 is a UE.

[0281] As an example, the third communication device 410 is a user equipment supporting V2X.

[0282] As an example, the third communication device 410 is a user equipment supporting D2D.

[0283] As an example, the third communication device 410 is an in-vehicle device.

[0284] As an example, the third communication device 410 is an RSU device.

[0285] As an example, the third communication device 410 is a UE.

[0286] As an example, at least one of the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 416 or the controller / processor 475 is used to transmit the third wireless signal in the present application.

[0287] As an example, at least one of the antenna 452, the receiver 454, the multi-antenna reception processor 458, the reception processor 456 or the controller / processor 459 is used to receive the third wireless signal in the present application.

[0288] As an example, at least one of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, or the controller / processor 459 is used to receive the first set of wireless signals in the present application.

[0289] As an example, at least one of the antenna 420, the transmitter 418, the multi-antenna transmitting processor 471, the transmitting processor 416, or the controller / processor 475 is used to transmit the twelfth wireless signal in the present application.

[0290] As an example, at least one of the antenna 452, the transmitter 454, the multi-antenna transmitting processor 457, the transmitting processor 468, or the controller / processor 459 is used to transmit the fifth wireless signal in the present application.

[0291] As an example, at least one of the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, or the controller / processor 475 is used to receive the fifth wireless signal in the present application.

[0292] As an example, at least one of the antenna 452, the transmitter 454, the multi-antenna transmitting processor 457, the transmitting processor 468, or the controller / processor 459 is used to transmit the third information in the present application.

[0293] As an example, at least one of the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, or the controller / processor 475 is used to receive the third information in the present application.

[0294] As an example, at least one of the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, or the controller / processor 459 is used to receive the fourth set of wireless signals in the present application.

[0295] As an example, at least one of the antenna 420, the transmitter 418, the multi-antenna transmitting processor 471, the transmitting processor 416, or the controller / processor 475 is used to transmit the seventh information in the present application.

[0296] As an example, at least one of the antenna 452, the transmitter 454, the multi-antenna transmitting processor 457, the transmitting processor 468, or the controller / processor 459 is used to transmit the seventh wireless signal in the present application.

[0297] As an example, at least one of the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, or the controller / processor 475 is used to receive the seventh wireless signal in the present application.

[0298] As an example, at least one of the antenna 452, the transmitter 454, the multi-antenna transmitting processor 457, the transmitting processor 468, or the controller / processor 459 is used to transmit the ninth wireless signal in the present application.

[0299] As an example, at least one of the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, or the controller / processor 475 is used to receive the ninth wireless signal in the present application.

[0300] Example 5

[0301] Embodiment 5 exemplifies another schematic diagram of a hardware module of a communication device according to an embodiment of the present application, as shown in the appendix Figure 5 as shown. Figure 5 is a block diagram of a second communication device 550 and a third communication device 510 that communicate with each other in an access network.

[0302] The second communication device 550 includes a controller / processor 559, a memory 560, a data source 567, a transmitting processor 568, a receiving processor 556, a multi-antenna transmitting processor 557, a multi-antenna receiving processor 558, a transmitter / receiver 554, and an antenna 552.

[0303] The third communication device 510 includes a controller / processor 575, a memory 576, a data source 577, a receiving processor 570, a transmitting processor 516, a multi-antenna receiving processor 572, a multi-antenna transmitting processor 571, a transmitter / receiver 518, and an antenna 520.

[0304] In the transmission from the third communication device 510 to the second communication device 550, at the third communication device 510, an upper layer data packet from the core network or an upper layer data packet from the data source 577 is provided to the controller / processor 575. The core network and the data source 577 represent all protocol layers above the L2 layer. The controller / processor 575 implements the functionality of the L2 layer. In the transmission from the third communication device 510 to the second communication device 550, the controller / processor 575 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation for the second communication device 550 based on various priority metrics. The controller / processor 575 is also responsible for retransmission of lost packets and signaling to the second communication device 550. The transmit processor 516 and the multi-antenna transmit processor 571 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 516 implements encoding and interleaving to facilitate forward error correction (FEC) at the third communication device 510, and mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 571 performs digital space precoding on the encoded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, to generate one or more spatial streams. The transmit processor 516 then maps each spatial stream to subcarriers, multiplexes with a reference signal (e.g., pilot) in the time domain and / or frequency domain, and then uses the inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. Subsequently, the multi-antenna transmit processor 571 performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 518 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 571 into a radio frequency stream and then provides it to different antennas 520.

[0305] In the transmission from the third communication device 510 to the second communication device 550, at the second communication device 550, each receiver 554 receives signals via its respective antenna 552. Each receiver 554 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multi-carrier symbol stream for providing to the receive processor 556. The receive processor 556 and the multi-antenna receive processor 558 perform various signal processing functions of the L1 layer. The multi-antenna receive processor 558 performs receive analog precoding / beamforming operations on the baseband multi-carrier symbol stream from the receivers 554. The receive processor 556 uses the fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receive processor 556, where the reference signal will be used for channel estimation, and the data signal recovers any spatial streams destined for the second communication device 550 after multi-antenna detection in the multi-antenna receive processor 558. The symbols on each spatial stream are demodulated and recovered in the receive processor 556, and soft decisions are generated. Subsequently, the receive processor 556 decodes and de-interleaves the soft decisions to recover the upper layer data and control signals transmitted by the third communication device 510 on the physical channel. Subsequently, the upper layer data and control signals are provided to the controller / processor 559. The controller / processor 559 performs the functions of the L2 layer. The controller / processor 559 may be associated with a memory 560 that stores program code and data. The memory 560 may be referred to as a computer-readable medium. In the transmission from the third communication device 510 to the second communication device 550, the controller / processor 559 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the third communication device 510. Subsequently, the upper layer data packets are provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 for L3 processing.

[0306] In the transmission from the second communication device 550 to the third communication device 510, at the second communication device 550, an upper layer data packet is provided to the controller / processor 559 using the data source 567. The data source 567 represents all protocol layers above the L2 layer. Similar to the transmit function at the third communication device 510 described in the transmission from the third communication device 510 to the second communication device 550, the controller / processor 559 performs header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels, and implements L2 layer functions for both the user plane and the control plane. The controller / processor 559 is also responsible for retransmission of lost packets and signaling to the third communication device 510. The transmit processor 568 performs modulation mapping and channel coding processing. The multi-antenna transmit processor 557 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Subsequently, the transmit processor 568 modulates the generated spatial streams into multi-carrier / single-carrier symbol streams, and after analog precoding / beamforming operations in the multi-antenna transmit processor 557, provides them to different antennas 552 via the transmitter 554. Each transmitter 554 first converts the baseband symbol stream provided by the multi-antenna transmit processor 557 into a radio frequency symbol stream and then provides it to the antenna 552.

[0307] In the transmission from the second communication device 550 to the third communication device 510, the functions at the third communication device 510 are similar to the receive function at the second communication device 550 described in the transmission from the third communication device 510 to the second communication device 550. Each receiver 518 receives a radio frequency signal through its corresponding antenna 520, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna receive processor 572 and the receive processor 570. The receive processor 570 and the multi-antenna receive processor 572 jointly implement the L1 layer functions. The controller / processor 575 implements the L2 layer functions. The controller / processor 575 may be associated with a memory 576 that stores program code and data. The memory 576 may be referred to as a computer-readable medium. In the transmission from the second communication device 550 to the third communication device 510, the controller / processor 575 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper layer data packet from the second communication device 550. The upper layer data packet from the controller / processor 575 may be provided to the core network or all protocol layers above the L2 layer, and various control signals may also be provided to the core network or L3 for L3 processing.

[0308] As an embodiment, the second communication device 550 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the second communication device 550 is at least: sending a fourth wireless signal and a second set of wireless signals, the fourth wireless signal including first information; wherein, the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, Q being a positive integer greater than 1; the first configuration includes a first parameter set; one of the Q node identities is used to identify the target receiver of the fourth wireless signal; the second set of wireless signals includes a first set of MAC SDUs, the first set of MAC SDUs being used to generate a first set of wireless signals; the first parameter set is used to configure the radio bearer of the target receiver of the first set of MAC SDUs, the first parameter set being applicable to the first set of MAC SDUs; the sender of the first set of wireless signals is identified by one of the Q node identities, or the senders of Q1 wireless signals in the first set of wireless signals are respectively identified by Q1 node identities among the Q node identities, Q1 being a positive integer greater than 1 and not greater than Q.

[0309] As an embodiment, the second communication device 550 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating actions when executed by at least one processor, the actions including: sending a fourth wireless signal and a second set of wireless signals, the fourth wireless signal including first information; wherein, the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, Q being a positive integer greater than 1; the first configuration includes a first parameter set; one of the Q node identities is used to identify the target receiver of the fourth wireless signal; the second set of wireless signals includes a first set of MAC SDUs, the first set of MAC SDUs being used to generate a first set of wireless signals; the first parameter set is used to configure the radio bearer of the target receiver of the first set of MAC SDUs, the first parameter set being applicable to the first set of MAC SDUs; the sender of the first set of wireless signals is identified by one of the Q node identities, or the senders of Q1 wireless signals in the first set of wireless signals are respectively identified by Q1 node identities among the Q node identities, Q1 being a positive integer greater than 1 and not greater than Q.

[0310] As an embodiment, the second communication device 550 corresponds to the second node in the present application.

[0311] As an example, the third communication device 510 corresponds to the third node in the present application.

[0312] As an example, the second communication device 550 is a UE.

[0313] As an example, the second communication device 550 is a user equipment supporting V2X.

[0314] As an example, the second communication device 550 is a user equipment supporting D2D.

[0315] As an example, the second communication device 550 is a vehicle-mounted device.

[0316] As an example, the second communication device 550 is an RSU.

[0317] As an example, at least one of the antenna 552, the transmitter 554, the multi-antenna transmission processor 557, the transmission processor 568, or the controller / processor 559 is used to transmit the fourth wireless signal in the present application.

[0318] As an example, at least one of the antenna 520, the receiver 518, the multi-antenna reception processor 572, the reception processor 570, or the controller / processor 575 is used to receive the fourth wireless signal in the present application.

[0319] As an example, at least one of the antenna 552, the transmitter 554, the multi-antenna transmission processor 557, the transmission processor 568, or the controller / processor 559 is used to transmit the second set of wireless signals in the present application.

[0320] As an example, at least one of the antenna 520, the receiver 518, the multi-antenna reception processor 572, the reception processor 570, or the controller / processor 575 is used to receive the eleventh wireless signal in the present application.

[0321] As an example, at least one of the antenna 520, the transmitter 518, the multi-antenna transmission processor 571, the transmission processor 516, or the controller / processor 575 is used to transmit the sixth wireless signal in the present application.

[0322] As an example, at least one of the antenna 552, the receiver 554, the multi-antenna reception processor 558, the reception processor 556, or the controller / processor 559 is used to receive the sixth wireless signal in the present application.

[0323] As an example, at least one of the antenna 520, the transmitter 518, the multi-antenna transmission processor 571, the transmission processor 516, or the controller / processor 575 is used to transmit the eighth wireless signal in this application.

[0324] As an example, at least one of the antenna 552, the receiver 554, the multi-antenna reception processor 558, the reception processor 556, or the controller / processor 559 is used to receive the eighth wireless signal in this application.

[0325] As an example, at least one of the antenna 520, the transmitter 518, the multi-antenna transmission processor 571, the transmission processor 516, or the controller / processor 575 is used to transmit the tenth wireless signal in this application.

[0326] As an example, at least one of the antenna 552, the receiver 554, the multi-antenna reception processor 558, the reception processor 556, or the controller / processor 559 is used to receive the tenth wireless signal in this application.

[0327] As an example, at least one of the antenna 552, the transmitter 554, the multi-antenna transmission processor 557, the transmission processor 568, or the controller / processor 559 is used to transmit the eighth information set in this application.

[0328] As an example, at least one of the antenna 520, the receiver 518, the multi-antenna reception processor 572, the reception processor 570, or the controller / processor 575 is used to receive the ninth information in this application.

[0329] Example 6

[0330] Embodiment 6 exemplifies a wireless signal transmission flowchart according to an embodiment of this application, as shown in the appendix Figure 6 shown. In the appendix Figure 6 shown, the second node U1 and the third node U2 communicate through a secondary link interface, and the third node U2 and the first node U3 communicate through a secondary link. It should be specifically noted that the order in this example does not limit the signal transmission order and implementation order in this application. As shown in the figure, the steps in the dashed box F0 are optional.

[0331] For First Node U3, the third information is sent in step S31; the fourth information set including the seventh information is received in step S32; the seventh radio signal is sent in step S33; the third radio signal is received in step S34; the fifth radio signal is sent in step S35; the first radio signal set including the twelfth radio signal is received in step S36.

[0332] For Second Node U1 , the eighth radio signal is received in step S11; the fourth radio signal is sent in step S12; the eighth information set including the ninth information is sent in step S13; the sixth radio signal is received in step S14; the second radio signal set including the eleventh radio signal is sent in step S15. It should be noted that step S12 may be executed before step S13, or step S12 may be executed after step S13 and before step S14.

[0333] For Third Node U2 , the third information is received in step S21; the seventh information is sent in step S22; the seventh radio signal is received in step S23; the eighth radio signal is sent in step S24; the fourth radio signal is received in step S25; the third radio signal is sent in step S26; the ninth information is received in step S27; the fifth radio signal is received in step S28; the sixth radio signal is sent in step S29; the eleventh radio signal is received in step S210; the twelfth radio signal is sent in step S211. It should be noted that step S27 may be executed before step S25, or step S27 may be executed after step S25 and before step S210.

[0334] As an embodiment, the third information is transmitted over the PC5 interface.

[0335] As an embodiment, the third information is for broadcast transmission.

[0336] As an embodiment, the third information is transmitted via SL.

[0337] As an embodiment, the third information is transmitted on the PSDCH (Physical Sidelink Discovery Channel).

[0338] As an embodiment, the third information is transmitted on the PSSCH.

[0339] As an embodiment, the third information is transmitted via SL-SRB.

[0340] As an embodiment, the third information is transmitted through SL-SRB0.

[0341] As an embodiment, the third information includes PC5-S (PC5-Signaling) information.

[0342] As an embodiment, the third information includes a discovery message, which is used to discover candidate relay nodes.

[0343] As an embodiment, the discovery message includes a first PC5_DISCOVERY (PC5 discovery) message, and the message type of the first PC5_DISCOVERY message is Discovery announcement (discovery release).

[0344] As an embodiment, the first PC5_DISCOVERY information may adopt the message structure of PC5_DISCOVERY defined in Section 11.2.5 of Protocol 24.334 of the 3GPP standard.

[0345] As an embodiment, the third information includes the node identity of the second node.

[0346] As an embodiment, the MAC PDU for transmitting the third information includes partial bits of the node identity of the first node; the scheduling information of the MAC PDU of the third information includes the remaining bits of the node identity of the first node.

[0347] As an embodiment, the node identity of the second node is a link layer identifier.

[0348] As an embodiment, the node identity of the second node is a layer 2 identifier.

[0349] As an embodiment, the node identity of the second node is a source layer 2 ID (layer 2 source identifier).

[0350] As an embodiment, the fourth information set includes at least one piece of information.

[0351] As an embodiment, the fourth information set is transmitted over the PC5 interface.

[0352] As an embodiment, any piece of information in the fourth information set is transmitted by broadcast.

[0353] As an embodiment, the fourth information set is transmitted through SL.

[0354] As an embodiment, any piece of information in the fourth information set is transmitted on the PSDCH.

[0355] As an embodiment, any piece of information in the fourth information set is transmitted on the PSSCH.

[0356] As an embodiment, the fourth information set is transmitted through the SL-SRB.

[0357] As an embodiment, the fourth information set is transmitted through the SL-SRB0.

[0358] As an embodiment, the fourth information set includes PC5-S (PC5-Signaling) information.

[0359] As an embodiment, any piece of information in the fourth information set includes the second PC5_DISCOVERY information, and the message type of the second PC5_DISCOVERY message is Discovery response.

[0360] As an embodiment, the second PC5_DISCOVERY may adopt the message structure of PC5_DISCOVERY defined in Section 11.2.5 of Protocol 24.334 of the 3GPP standard.

[0361] As an embodiment, any piece of information in the fourth information set includes the node identity of the second node.

[0362] As an embodiment, any piece of information in the fourth information set carries the node identity of the source sender of the any piece of information.

[0363] As an embodiment, a part of the bits of the node identity of the sender of the MAC PDU that sends any piece of information in the fourth information set is included in the MAC PDU; the remaining bits of the node identity of the sender of the MAC PDU are included in the scheduling information of the MAC PDU of the any piece of information in the fourth information set.

[0364] As an embodiment, any piece of information in the fourth information set includes a response to the third information.

[0365] As an embodiment, the fourth information set includes at least two pieces of information; any two source senders among the source senders of the fourth information set are not co-located.

[0366] As an embodiment, the source sender of the fourth information set is a candidate relay node.

[0367] As an embodiment, the fourth information set includes at least P pieces of information.

[0368] As an embodiment, the source sender of the fourth information set includes at least P relay nodes.

[0369] As an embodiment, the first node determines P candidate node identities from the received fourth information set, including: selecting P candidate nodes from the group of source senders of the fourth information set according to the RSRP (Reference Signal Received Power) of the received set of wireless signals carrying the fourth information set from high to low and generating a first sequence; the P candidate nodes are respectively identified by the P candidate node identities; the first sequence includes the P candidate node identities; the first selected candidate node is arranged at the first position in the first sequence; the second selected candidate node is arranged at the second position in the first sequence, and so on, until the Pth candidate node is selected and arranged at the Pth position in the first sequence.

[0370] As an embodiment, the P candidate node identities are determined from the partial bits of the node identity of the sender of the MAC PDU including one piece of information in the received fourth information set and the remaining bits of the node identity of the sender of the MAC PDU included in the scheduling information of the MAC PDU including one piece of information.

[0371] As an embodiment, the P candidate node identities respectively indicate P candidate relay nodes.

[0372] As an embodiment, the P candidate node identities include the Q node identities; P is a positive integer not less than Q.

[0373] As an embodiment, the source sender of the fifth information is the first node; the third node receives the seventh wireless signal, recovers the fifth information, and forwards the fifth information through the eighth wireless signal; the target receiver of the fifth information is the second node.

[0374] As an embodiment, the sender of the seventh wireless signal and the target receiver of the eighth wireless signal are not co-located.

[0375] As an embodiment, the seventh wireless signal and the eighth wireless signal are respectively transmitted through a wireless interface.

[0376] As an embodiment, the seventh wireless signal and the eighth wireless signal are respectively transmitted through the PC5 interface.

[0377] As an embodiment, the seventh wireless signal and the eighth wireless signal are respectively transmitted via SL.

[0378] As an embodiment, the seventh wireless signal and the eighth wireless signal are respectively transmitted via PSSCH (Physical Sidelink Shared Channel).

[0379] As an embodiment, the seventh wireless signal and the eighth wireless signal are respectively transmitted via SRB.

[0380] As an embodiment, the seventh wireless signal and the eighth wireless signal are respectively transmitted via unicast.

[0381] As an embodiment, the time-frequency resources occupied by the seventh wireless signal and the time-frequency resources occupied by the eighth wireless signal respectively belong to the V2X resource pool.

[0382] As an embodiment, the time-frequency resources occupied by the seventh wireless signal and the time-frequency resources occupied by the eighth wireless signal are respectively reserved for sidelink transmission.

[0383] As an embodiment, the seventh wireless signal and the eighth wireless signal respectively include the fifth information.

[0384] As an embodiment, the fifth information includes RRC information.

[0385] As an embodiment, the fifth information includes PC5-RRC information.

[0386] As an embodiment, the fifth information includes all or part of the IEs (Information Elements) in an RRC information.

[0387] As an embodiment, the fifth information includes the CandidateRelayList IE in an RRC information.

[0388] As an embodiment, the fifth information includes all or part of the fields in an IE in an RRC information.

[0389] As an embodiment, the fifth information includes RRCReconfigurationRequestSidelink.

[0390] As an embodiment, the fifth information includes PC5-S (PC5-Signaling) information.

[0391] As an embodiment, the fifth information includes the identities of the P candidate nodes.

[0392] As an embodiment, the fifth information includes the first sequence.

[0393] As an embodiment, the second node receives the eighth radio signal, recovers the fifth information from the eighth radio signal, and selects the Q node identities from the identities of the P candidate nodes included in the fifth information.

[0394] As an embodiment, the source sender of the first information is the second node; the third node receives the fourth radio signal, recovers the first information, and forwards the first information through the third radio signal; the target receiver of the first information is the first node.

[0395] As an embodiment, the sender of the fourth radio signal is the second node in this application.

[0396] As an embodiment, the fourth radio signal is transmitted through a wireless interface.

[0397] As an embodiment, the fourth radio signal is transmitted through a PC5 interface.

[0398] As an embodiment, the fourth radio signal is transmitted through SL.

[0399] As an embodiment, the fourth radio signal is a PSSCH.

[0400] As an embodiment, the fourth radio signal is transmitted through an SL-SRB.

[0401] As an embodiment, the fourth radio signal is transmitted through an SL-SRB3.

[0402] As an embodiment, the time-frequency resources occupied by the fourth radio signal belong to a V2X resource pool.

[0403] As an embodiment, the time-frequency resources occupied by the fourth radio signal are reserved for sidelink transmission.

[0404] As an embodiment, the fourth radio signal includes the first information.

[0405] As an embodiment, the second node randomly selects Q node identities from the first sequence to generate the node identity group.

[0406] As an embodiment, the second node selects the first Q node identities from the first sequence to generate the node identity group.

[0407] As an embodiment, the sender of the fourth wireless signal and the target receiver of the third wireless signal are not co-located.

[0408] As an embodiment, the source sender of the second information is the first node; the third node receives the fifth wireless signal, recovers the second information, and forwards the second information through the sixth wireless signal; the target receiver of the second information is the second node.

[0409] As an embodiment, the sender of the fifth wireless signal and the target receiver of the sixth wireless signal are not co-located.

[0410] As an embodiment, the fifth wireless signal and the sixth wireless signal are respectively transmitted through a wireless interface.

[0411] As an embodiment, the fifth wireless signal and the sixth wireless signal are respectively transmitted through the PC5 interface.

[0412] As an embodiment, the fifth wireless signal and the sixth wireless signal are respectively transmitted through SL.

[0413] As an embodiment, the fifth wireless signal and the sixth wireless signal are respectively PSSCH.

[0414] As an embodiment, the fifth wireless signal and the sixth wireless signal are respectively transmitted through SL-SRB.

[0415] As an embodiment, the fifth wireless signal and the sixth wireless signal are respectively transmitted through SL-SRB3.

[0416] As an embodiment, the time-frequency resources occupied by the fifth wireless signal and the time-frequency resources occupied by the sixth wireless signal respectively belong to the V2X resource pool.

[0417] As an embodiment, the time-frequency resources occupied by the fifth wireless signal and the time-frequency resources occupied by the sixth wireless signal are respectively reserved for sidelink transmission.

[0418] As an embodiment, the fifth wireless signal and the sixth wireless signal respectively include the second information.

[0419] As an embodiment, the second information includes RRC information.

[0420] As an embodiment, the second information includes PC5-RRC information.

[0421] As an embodiment, the second information includes all or part of the IEs (Information Elements) in an RRC information.

[0422] As an embodiment, the second information includes all or part of the fields in an IE in an RRC information.

[0423] As an embodiment, the second information includes RRCReconfigurationcompleteSidelink (sidelink RRC reconfiguration completed).

[0424] As an embodiment, the second information includes a response to the first information.

[0425] As an embodiment, the target receiver of the fifth wireless signal is the sender of the third wireless signal.

[0426] As an embodiment, the second information includes RRCReconfigurationcompleteSidelink; the UE identity in the MAC PDU carried by the third wireless signal is included in the MAC PDU including the RRCReconfigurationcompleteSidelink; the UE identity in the SCI scheduling the third wireless signal is included in the SCI scheduling the RRCReconfigurationcompleteSidelink.

[0427] As an embodiment, the second node sends the eighth information set; the target receivers of the eighth information set are the Q nodes identified by the Q node identities.

[0428] As an embodiment, the eighth information set includes the ninth information, and the receiver of the ninth information is the third node in this application.

[0429] As an embodiment, the fourth wireless signal includes the ninth information, and the ninth information is received at a higher layer of the third node.

[0430] As an embodiment, each information in the eighth information set is sent unicast.

[0431] As an embodiment, each information in the eighth information set includes RRC information.

[0432] As an embodiment, each information in the eighth information set includes PC5-RRC information.

[0433] As an embodiment, each information in the eighth information set includes all or part of the IEs (Information Elements) in an RRC information.

[0434] As an example, each piece of information in the eighth information set includes all or part of the fields in an IE in an RRC information.

[0435] As an example, each piece of information in the eighth information set includes RRCReconfigurationSidelink.

[0436] As an example, any piece of information in the eighth information set includes the second configuration.

[0437] As an example, the second configuration is a field in any piece of information in the eighth information set.

[0438] As an example, the second configuration is the SLRB-Config (Sidelink Radio Bearer Configuration) field in any piece of information in the eighth information set.

[0439] As an example, the second configuration is the slrb-ConfigToAddModList (Sidelink Radio Bearer - Add / Modify Configuration List) field in any piece of information in the eighth information set.

[0440] As an example, the second parameter set includes at least the former of the MAC sublayer configuration parameters and the RLC sublayer configuration parameters.

[0441] As an example, the second parameter set includes the first radio bearer identifier.

[0442] As an example, the second parameter set is used to configure the radio bearers of the third node.

[0443] As an example, the radio bearers of the third node include the radio bearers that the third node transmits corresponding to the second node and the radio bearers that the third node transmits corresponding to the first node.

[0444] As an example, the radio bearers of the third node constitute the end-to-end radio bearer indicated by the first radio bearer identifier.

[0445] As an example, the second parameter set is used to configure the radio bearers of the Q nodes identified by the Q node identities.

[0446] As an example, the second parameter set is used to configure the higher layer entities corresponding to the radio bearers of the Q nodes identified by the Q node identities.

[0447] As an example, the higher layer entity corresponding to the radio bearer of the Q nodes includes at least the former of the MAC entity and the RLC entity.

[0448] As an example, the second parameter set includes the LCIDs corresponding to the radio bearers of the Q nodes.

[0449] As an example, the LCIDs included in the second parameter set are the same as the LCIDs included in the first parameter set.

[0450] As an example, any one of the radio bearers of the Q nodes can be used to transmit the service to which the first MAC SDU set belongs.

[0451] As an example, any one of the radio bearers of the Q nodes can be used to transmit the PC5 QoS flow to which the first MAC SDU set belongs.

[0452] As an example, any one of the radio bearers of the Q nodes is a DRB.

[0453] As an example, any one of the radio bearers of the Q nodes is an SL-SRB.

[0454] As an example, any one of the radio bearers of the Q nodes is an RLC bearer.

[0455] As an example, after the second node sends the eighth information set, it receives the tenth information set; the tenth information set is a response to the eighth information set; the source sender of the tenth information set is the Q nodes identified by the identities of the Q nodes.

[0456] As an example, each piece of information in the tenth information set is sent unicast.

[0457] As an example, each piece of information in the tenth information set includes PC5-RRC information.

[0458] As an example, each piece of information in the tenth information set includes RRCReconfigurationcompleteSidelink.

[0459] As an example, the second node sends the second set of radio signals.

[0460] As an example, the second set of radio signals includes at least one radio signal.

[0461] As an example, the second wireless signal set includes the eleventh wireless signal.

[0462] As an example, the second wireless signal set is transmitted through a wireless interface.

[0463] As an example, the second wireless signal set is transmitted through a PC5 interface.

[0464] As an example, the second wireless signal set is transmitted through SL.

[0465] As an example, any wireless signal in the second wireless signal set occupies a PSSCH.

[0466] As an example, any wireless signal in the second wireless signal set occupies a physical layer channel.

[0467] As an example, any wireless signal in the second wireless signal set is transmitted through a DRB (Data Radio Bearer).

[0468] As an example, the second wireless signal set includes at least two wireless signals; any two wireless signals in the second wireless signal set are transmitted in different sidelink time slots.

[0469] As an example, the second wireless signal set includes at least two wireless signals; any two wireless signals in the second wireless signal set carry different information bits.

[0470] As an example, the second wireless signal set includes at least two wireless signals; any two wireless signals in the second wireless signal set carry different transport blocks.

[0471] As an example, the second wireless signal set includes at least two wireless signals; the target receivers of any two wireless signals in the second wireless signal set are the same.

[0472] As an example, the second wireless signal set includes at least two wireless signals; at least two wireless signals in the second wireless signal set have different target receivers.

[0473] As an example, the time-frequency resources occupied by the second wireless signal set belong to the V2X resource pool.

[0474] As an example, the time-frequency resources occupied by the second wireless signal set are reserved for sidelink transmission.

[0475] As an example, the fourth wireless signal and any one of the wireless signals in the second set of wireless signals are transmitted in different sidelink time slots.

[0476] As an example, the fourth wireless signal is transmitted earlier than the second set of wireless signals.

[0477] As an example, the target receiver of the second set of wireless signals includes a node identified by any one of the Q node identities.

[0478] As an example, the number of wireless signals included in the second set of wireless signals is not less than the number of wireless signals included in the first set of wireless signals.

[0479] As an example, the target signaling includes physical layer signaling corresponding to each of the Q node identities; the first receiver monitors the target signaling in the first time-frequency resource pool.

[0480] As an example, the target signaling is used to indicate the time-frequency resources occupied by the target wireless signal and the modulation and coding scheme adopted by the target wireless signal.

[0481] As an example, the target signaling is monitored in each time slot in the first time-frequency resource pool.

[0482] As an example, the target signaling is monitored in some time slots in the first time-frequency resource pool.

[0483] As an example, the target signaling is monitored in each time slot in the first time-frequency resource pool where no wireless transmission is performed.

[0484] As an example, the target signaling is monitored in each time slot in the first time-frequency resource pool where no sidelink wireless transmission is performed.

[0485] As an example, the target signaling is monitored in each time slot in the first time-frequency resource pool where wireless reception is performed.

[0486] As an example, the target signaling is monitored in each time slot in the first time-frequency resource pool where sidelink wireless reception is performed.

[0487] As an example, the phrase "monitor the target signaling in the first time-frequency resource pool" includes: performing energy detection on the target signaling in the first time-frequency resource pool.

[0488] As an example, the phrase "monitor the target signaling in the first time-frequency resource pool" includes: performing blind decoding on the target signaling in the first time-frequency resource pool.

[0489] As an example, the phrase "monitoring the target signaling in the first time-frequency resource pool" includes: performing blind decoding for the target signaling in the first time-frequency resource pool and performing energy detection on the target radio signal.

[0490] As an example, the phrase "monitoring the target signaling in the first time-frequency resource pool" includes: performing blind decoding for the target signaling in the first time-frequency resource pool and performing energy detection on the reference signal of the target radio signal.

[0491] As an example, the phrase "monitoring the target signaling in the first time-frequency resource pool" includes: performing blind decoding for the target signaling in the first time-frequency resource pool, performing energy detection on the reference signal of the target radio signal, and performing decoding on the target radio signal.

[0492] As an example, the phrase "monitoring the target signaling in the first time-frequency resource pool" includes: performing CRC (Cyclic Redundancy Check) verification for the target signaling in the first time-frequency resource pool.

[0493] As an example, the first time-frequency resource pool is reserved for sidelink transmission.

[0494] As an example, the first time-frequency resource pool belongs to the V2X resource pool.

[0495] As an example, when any one of the Q node identities corresponding to the physical layer signaling is successfully decoded, the physical layer signaling is detected.

[0496] As an example, when any one of the Q node identities corresponding to the physical layer signaling passes the CRC verification, the physical layer signaling is detected.

[0497] As an example, Q2 is greater than 1, and any two of the Q2 physical layer signals are detected in different sidelink time slots.

[0498] As an example, Q2 is greater than 1, and at least two of the Q2 physical layer signals are detected in the same sidelink time slot.

[0499] As an example, any one of the Q2 physical layer signals includes partial bits of one of the Q node identities.

[0500] As an example, the sender of the Q2 physical layer signals is identified by one of the Q node identities.

[0501] As an example, Q2 is greater than 1, and the senders of at least two of the Q2 physical layer signaling are identified by two different node identities among the Q node identities.

[0502] As an example, the Q2 physical layer signaling respectively includes Q2 SCI information.

[0503] As an example, the first set of radio signals includes Q2 radio signals, and the Q2 physical layer signaling respectively includes scheduling information of the Q2 radio signals.

[0504] As an example, the source sender of the first set of MAC SDUs is the second node.

[0505] As an example, the target receiver of the first set of MAC SDUs is the first node.

[0506] As an example, a MAC sub-header corresponding to any one of the MAC SDUs in the first set of MAC SDUs includes an LCID; the LCID is used to indicate a higher layer entity that processes any one of the MAC SDUs in the first set of MAC SDUs.

[0507] As an example, any one of the MAC SDUs in the first set of MAC SDUs is distributed to the target RLC entity of the first node according to the LCID of the MAC SDU.

[0508] As an example, the first set of MAC SDUs includes at least two MAC SDUs; the LCIDs of any two MAC SDUs in the first set of MAC SDUs are the same.

[0509] As an example, the phrase "the target RLC entity of the first node is independent of the node identity of the sender of any one of the MAC SDUs" includes: any one of the MAC SDUs in the first set of MAC SDUs is distributed to the target RLC entity of the first node.

[0510] As an example, the phrase "the target RLC entity of the first node is independent of the node identity of the sender of any one of the MAC SDUs" includes: the first set of MAC SDUs includes at least two MAC SDUs, and the senders of the at least two MAC SDUs in the first set of MAC SDUs are identified by at least two different node identities among the Q node identities.

[0511] As an example, the phrase that the target RLC entity of the first node has nothing to do with the node identity of the sender of any MAC SDU includes: the LCIDs corresponding to each MAC SDU in the first MAC SDU set are the same; the LCID is associated with the target RLC entity of the first node.

[0512] Example 7

[0513] Example 7 exemplifies another schematic diagram of a wireless signal according to an embodiment of the present application, as shown in the appendix Figure 7 shown. In the appendix Figure 7 , the second node U4 and the third node U5 communicate through a secondary link interface, and the third node U5 and the first node U6 communicate through a secondary link. It should be particularly noted that the order in this example does not limit the signal transmission order and implementation order in the present application.

[0514] For First Node U6 , the ninth wireless signal is sent in step S61.

[0515] For Second Node U4 , the tenth wireless signal is received in step S41.

[0516] For Third Node U5 , the ninth wireless signal is received in step S51; the tenth wireless signal is sent in step S52.

[0517] As an example, the first transmitter determines that the first path fails; in response to the failure of the first path, the ninth wireless signal is sent.

[0518] As an example, the first path includes a node identified by the first node identity, and the first node identity belongs to one of the Q node identities.

[0519] As an example, the first path includes at least one of the radio bearers transmitted by the third node corresponding to the second node or the radio bearers transmitted by the third node corresponding to the first node.

[0520] As an example, the phrase that the target RLC entity of the first node has nothing to do with the node identity of the sender of any MAC SDU includes: the first path includes a node identified by the first node identity, and the first node identity belongs to one of the Q node identities; the failure of the first path does not trigger the release of the target RLC entity.

[0521] As an example, the first node identity identifies a relay node.

[0522] As an embodiment, a node identified by the first node identity and the third node in this application are not co-located.

[0523] As an embodiment, when the target RLC entity of the first node indicates that the RLC retransmission count for the first node identity reaches the maximum value, it is determined that the first path fails.

[0524] As a sub-embodiment of the above embodiment, the maximum value of the RLC retransmission count is pre-configured.

[0525] As a sub-embodiment of the above embodiment, the maximum value of the RLC retransmission count is configured by the network.

[0526] As an embodiment, when the T400 timer of the first node expires, it is determined that the first path fails.

[0527] As an embodiment, when the T400 timer of the first node for the first node identity expires, it is determined that the first path fails.

[0528] As an embodiment, when the MAC entity of the first node indicates that the HARQ DTX (Discontinuous Transmission) for the first node identity reaches the maximum value, it is determined that the first path fails.

[0529] As a sub-embodiment of the above embodiment, the maximum value of the HARQ DTX is pre-configured.

[0530] As a sub-embodiment of the above embodiment, the maximum value of the HARQ DTX is configured by the network.

[0531] As an embodiment, when the PDCP entity corresponding to the radio bearer of the first node indicates that the integrity check of the SL-SRB2 or SL-SRB3 bearer fails, it is determined that the first path fails.

[0532] As an embodiment, the target receiver of the ninth radio signal is a node identified by any node identity among the Q node identities other than the first node identity.

[0533] As an embodiment, the target receiver of the ninth radio signal is a node identified by the first node identity after the first node identity in the first sequence.

[0534] As an embodiment, the sender of the ninth radio signal and the target receiver of the tenth radio signal are not co-located.

[0535] As an embodiment, the ninth wireless signal and the tenth wireless signal are respectively transmitted through the air interface.

[0536] As an embodiment, the ninth wireless signal and the tenth wireless signal are respectively transmitted through the wireless interface.

[0537] As an embodiment, the ninth wireless signal and the tenth wireless signal are respectively transmitted through the PC5 interface.

[0538] As an embodiment, the ninth wireless signal and the tenth wireless signal are respectively transmitted through SL.

[0539] As an embodiment, the ninth wireless signal and the tenth wireless signal are respectively PSSCH (Physical Sidelink Shared Channel).

[0540] As an embodiment, the ninth wireless signal and the tenth wireless signal are respectively transmitted through SL-SRB (Signaling Radio Bearer).

[0541] As an embodiment, the ninth wireless signal and the tenth wireless signal are respectively transmitted through SL-SRB3.

[0542] As an embodiment, the time-frequency resources occupied by the ninth wireless signal and the time-frequency resources occupied by the tenth wireless signal respectively belong to the V2X resource pool.

[0543] As an embodiment, the time-frequency resources occupied by the ninth wireless signal and the time-frequency resources occupied by the tenth wireless signal are respectively reserved for sidelink transmission.

[0544] As an embodiment, the ninth wireless signal and the tenth wireless signal respectively include the sixth information.

[0545] As an embodiment, the third node in this application receives the ninth wireless signal, recovers the sixth information, and forwards the sixth information through the tenth wireless signal.

[0546] As an embodiment, the source sender of the sixth information is the first node.

[0547] As an embodiment, the target receiver of the sixth information is the second node.

[0548] As an embodiment, the second node receives the sixth information, and the sixth information indicates that the first path fails.

[0549] As an embodiment, the sixth information includes the first node identity.

[0550] As an embodiment, the sixth information includes the updated candidate node identity, and the updated candidate node identity does not include the first node identity.

[0551] As an embodiment, the sixth information includes PC5-RRC information.

[0552] As an embodiment, the sixth information includes all or part of the IEs (Information Elements) in an RRC information.

[0553] As an embodiment, the sixth information includes all or part of the fields in an IE in an RRC information.

[0554] As an embodiment, the sixth information includes RRCReconfigurationSidelink.

[0555] As an embodiment, the sixth information includes the FailureRelayList IE in an RRC information.

[0556] As an embodiment, the sixth information includes the UpdateRelayList IE in an RRC information.

[0557] As an embodiment, the second receiver receives the sixth information; in response to receiving the sixth information, the second transmitter sends the eleventh information; the eleventh information is forwarded by the third node to the first node; the target receiver of the eleventh information is the first node.

[0558] As an embodiment, the eleventh information includes RRC information.

[0559] As an embodiment, the eleventh information includes PC5-RRC information.

[0560] As an embodiment, the eleventh information includes all or part of the IEs in an RRC information.

[0561] As an embodiment, the eleventh information includes all or part of the fields in an IE in an RRC information.

[0562] As an embodiment, the eleventh information includes RRCReconfigurationcompleteSidelink.

[0563] As an embodiment, the eleventh information includes RRCReconfigurationcompleteSidelink; the UE identity in the MAC PDU carried by the tenth radio signal is included in the MAC PDU including the RRCReconfigurationcompleteSidelink; the UE identity in the SCI scheduling the tenth radio signal is included in the SCI scheduling the RRCReconfigurationcompleteSidelink.

[0564] As an embodiment, after the second node receives the sixth information, the target receiver of the second radio signal set does not include the node identified by the first node identity.

[0565] As an embodiment, after the second node receives the sixth information, it sends the twelfth information, and the target receiver of the twelfth information is a node identified by the first node identity; the twelfth information instructs to release the radio bearer of the node identified by the first node identity.

[0566] As an embodiment, after the first node sends the sixth information, it sends the thirteenth information, and the target receiver of the thirteenth information is a node identified by the first node identity; the thirteenth information instructs to release the radio bearer of the node identified by the first node identity.

[0567] Example 8

[0568] Embodiment 8 exemplifies a schematic diagram of a source sender, a sender, a receiver, and a target receiver according to an embodiment of the present application, as shown in the appendix Figure 8 as follows.

[0569] As an embodiment, the source sender of the first MAC SDU set refers to: generating the first MAC SDU set according to the RLC SDU set of the RLC sublayer and transmitting it over the air interface.

[0570] As an embodiment, the source sender of the first MAC SDU set refers to: generating the first MAC SDU set according to the PDCP SDU set of the PDCP sublayer and transmitting it over the air interface.

[0571] As an embodiment, the target receiver of the first MAC SDU set refers to: receiving the first MAC SDU set through the air interface and no longer forwarding the first MAC SDU set through the air interface.

[0572] As an example, the target receiver of the first set of MAC SDUs refers to: receiving the first set of MAC SDUs through the air interface and delivering the data carried in the first set of MAC SDUs to the RLC sublayer.

[0573] As an example, the target receiver of the first set of MAC SDUs refers to: receiving the first set of MAC SDUs through the air interface and delivering the data carried in the first set of MAC SDUs to the PDCP sublayer.

[0574] As an example, the source sender of the first piece of information refers to: generating the first piece of information at the RRC layer and sending it through the air interface.

[0575] As an example, the source sender of the first piece of information refers to: generating the first piece of information at the RRC layer according to the data received from the NAS and sending it through the air interface.

[0576] As an example, the target receiver of the first piece of information refers to: receiving the first piece of information through the air interface and not forwarding the first piece of information through the air interface anymore.

[0577] As an example, the target receiver of the first piece of information refers to: receiving the first piece of information through the air interface and delivering the data carried in the first piece of information to the RRC.

[0578] As an example, the target receiver of the first piece of information refers to: receiving the first piece of information through the air interface and delivering the data carried in the first piece of information to the NAS.

[0579] As shown in Figure 8 Case A of the attachment, the first piece of information is generated at the second node, and the second node is the source sender of the first piece of information; the first piece of information terminates at the first node, and the first node is the target receiver of the first piece of information; during the transmission of the first piece of information from the second node to the first node, the third node acts as a relay node and is transmitted through a total of two hops, namely the first hop and the second hop; during the first-hop transmission, the third node is the receiver of the first piece of information; during the second-hop transmission, the third node is the sender of the first piece of information.

[0580] As an example, the attachment Figure 8For Case A, taking the first information as an example, for the transmission of the second information, the fifth information, the sixth information, and the eleventh information in this application, the above descriptions of the source sender, sender, receiver, and target receiver of the information also apply and will not be elaborated here.

[0581] As shown in Figure 8 Case B, the fourth radio signal is generated at the second node, and the second node is the sender of the fourth radio signal; the fourth radio signal terminates at the third node, and the third node is the target receiver of the third radio signal.

[0582] As an example, Figure 8 For Case B, taking the fourth radio signal as an example, for the first radio signal set, second radio signal set, third radio signal, fourth radio signal, fifth radio signal, sixth radio signal, seventh radio signal, eighth radio signal, ninth radio signal, tenth radio signal, eleventh radio signal, and twelfth radio signal in this application, the above descriptions of the sender and target receiver of the radio signal also apply and will not be elaborated here.

[0583] Example 9

[0584] Embodiment 9 exemplifies the format diagrams of the first MAC SDU and the first MAC PDU according to an embodiment of this application, as shown in Figure 9 described.

[0585] As an example, the eleventh radio signal includes a first MAC PDU, as Figure 9 shown. The first MAC PDU includes an SL-SCH sub-header and a first MAC sub-PDU (subPDU). The first MAC sub-PDU includes a MAC sub-header and the first MAC SDU. The V field included in the SL-SCH sub-header is used to indicate the version number. The R field included in the SL-SCH sub-header is a reserved field. The SRC field included in the SL-SCH sub-header includes the upper 16 bits of the node identity of the sender of the eleventh radio signal. The DST field included in the SL-SCH sub-header includes the upper 8 bits of the node identity of the target receiver of the eleventh radio signal. The R field included in the MAC sub-header is a reserved field. The F field included in the MAC sub-header indicates the length included in the L field included in the MAC sub-header. The L field included in the MAC sub-header indicates the number of bytes included in the first MAC SDU.

[0586] As an example, the MAC sub-header includes an LCID, and the LCID is used to indicate the radio bearer to which the first MAC SDU belongs.

[0587] As an embodiment, the first MAC SDU is distributed to the RLC entity of the third node according to the LCID of the first MAC SDU.

[0588] As an embodiment, the first MAC SDU is distributed to the target RLC entity of the first node according to the LCID of the first MAC SDU.

[0589] As an embodiment, the first MAC SDU is used at the third node to generate the twelfth radio signal.

[0590] As an embodiment, the first MAC sub-PDU is used at the third node to generate the twelfth radio signal.

[0591] As an embodiment, the RLC entity of the third node caches the first MAC SDU.

[0592] As an embodiment, the RLC entity of the third node caches the first MAC sub-PDU.

[0593] As an embodiment, the LCIDs of the first MAC SDU included in the eleventh radio signal and the twelfth radio signal are the same respectively.

[0594] As an embodiment, any one of the MAC PDUs corresponding to any one of the MAC SDUs in the first MAC SDU set includes at least part of the bits of the node identity of the sender of the any one of the MAC PDUs.

[0595] As an embodiment, any one of the MAC PDUs corresponding to any one of the MAC SDUs in the first MAC SDU set includes at least part of the bits of the node identity of the receiver of the any one of the MAC PDUs.

[0596] Example 10

[0597] Example 10 exemplifies a schematic diagram of the radio protocol architecture of the user plane of the first node, the second node, and the third node according to an embodiment of the present application, as shown in the appendix Figure 10 as follows.

[0598] As an embodiment, the PHY layer 1001 and the PHY layer 1003 included in the third node, the PHY layer 1051 included in the second node, and the PHY layer 1091 included in the first node include the PHY351 layer included in the user plane 350 in the appendix of the present application. Figure 3 of the present application.

[0599] As an embodiment, the L2 layer 1052 included in the second node and the L2 layer 1092 included in the first node respectively include the MAC sub-layer 352, RLC sub-layer 353, PDCP sub-layer 354, and SDAP sub-layer 356 included in the L2 layer 355 included in the user plane 350 in the attached drawings of the present application. Figure 3

[0600] As an embodiment, the L2 layer 1002 included in the third node includes the MAC sub-layer 352 included in the L2 layer 355 included in the user plane in the attached drawings of the present application. Figure 3

[0601] As an embodiment, the L2 layer 1002 included in the third node includes the RLC sub-layer 353 included in the L2 layer 355 included in the user plane in the attached drawings of the present application; the RLC sub-layer included in the L2 layer 1002 included in the third node performs ARQ retransmission, duplicate packet detection, and protocol error detection to the RLC sub-layer included in the L2 layer 1052 included in the second node; the RLC sub-layer included in the L2 layer 1002 included in the third node abandons the packet segmentation and reassembly functions to the RLC sub-layer included in the L2 layer 1052 included in the second node. Figure 3

[0602] As an embodiment, the L2 layer 1004 included in the third node includes the MAC sub-layer 352 included in the L2 layer 355 included in the user plane in the attached drawings of the present application. Figure 3

[0603] As an embodiment, the L2 layer 1004 included in the third node includes the RLC sub-layer 353 included in the L2 layer 355 included in the user plane in the attached drawings of the present application; the RLC sub-layer included in the L2 layer 1004 included in the third node performs ARQ retransmission, duplicate packet detection, and protocol error detection to the RLC sub-layer included in the L2 layer 1092 included in the first node; the RLC sub-layer included in the L2 layer 1004 included in the third node abandons the packet segmentation and reassembly functions to the RLC sub-layer included in the L2 layer 1092 included in the first node. Figure 3

[0604] As an embodiment, the third node includes an adaptation sub-layer 905; the adaptation sub-layer implements relay-related control plane functions.

[0605] As an example, the adaptation sublayer 1005 is located below or above any protocol sublayer included in the L2 layer 1002 and the L2 layer 1004 included in the third node.

[0606] As an example, the adaptation sublayer 1005 is located above the RLC sublayers included in the L2 layer 1002 and the L2 layer 1004 included in the first node.

[0607] As an example, the third node and the second node are connected through a PC5 interface, and the PHY layer 1001 included in the third node corresponds to the PHY layer 1051 included in the second node.

[0608] As an example, the third node and the first node are connected through a PC5 interface, and the PHY layer 1003 included in the third node corresponds to the PHY layer 1091 included in the first node.

[0609] As an example, the first set of MAC SDUs is generated in the L2 layer 1052 included in the second node.

[0610] As an example, the first set of MAC SDUs is received in the L2 layer 1092 included in the first node.

[0611] As an example, the first MAC SDU is cached in the L2 layer 1002 included in the third node.

[0612] As an example, the first MAC SDU is cached in the L2 layer 1004 included in the third node.

[0613] As an example, the third node caches the received first MAC SDU in the L2 layer 1002; after the third node sends a control message to the second node indicating that the first MAC SDU has been successfully received, the first MAC SDU is transferred from the L2 layer 1002 to the L2 layer 1004.

[0614] As an example, the third node caches the received first MAC SDU in the L2 layer 1002; when scheduling the first MAC SDU to be sent to the first node, the first MAC SDU is transferred from the L2 layer 1002 to the L2 layer 1004.

[0615] As an example, the second parameter set includes configuration parameters for the L2 layer 1002 and the L2 layer 1004.

[0616] Example 11

[0617] Embodiment 11 exemplifies a structural block diagram of a processing device in a first node according to an embodiment of the present application, as shown in the appendix Figure 11 shown. In the appendix Figure 11 , the first node processing device 1100 includes a first receiver 1101 and a first transmitter 1102. The first receiver 1101 includes at least one of the transmitter / receiver 454 (including antenna 452), receive processor 456, multi-antenna receive processor 458, or controller / processor 459 in the appendix of the present application Figure 4 ; the first transmitter 1102 includes at least one of the transmitter / receiver 454 (including antenna 452), transmit processor 468, multi-antenna transmit processor 457, or controller / processor 459 in the appendix of the present application Figure 4 .

[0618] In Embodiment 11, the first receiver 1101 receives a third wireless signal and a first set of wireless signals. The third wireless signal includes first information. Among them, the first information includes a node identity group and a first configuration. The node identity group includes Q node identities, where Q is a positive integer greater than 1. The first configuration includes a first parameter set. One of the Q node identities is used to identify the sender of the third wireless signal. The first parameter set is used to configure the radio bearer of the first node. The sender of the first set of wireless signals is identified by one of the Q node identities, or the senders of Q1 wireless signals in the first set of wireless signals are respectively identified by Q1 of the Q node identities, where Q1 is a positive integer greater than 1 and not greater than Q. The first set of wireless signals includes a first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs.

[0619] As an embodiment, the first transmitter 1102, in response to the first information, sends a fifth wireless signal. The fifth wireless signal includes second information. Among them, the target receiver of the fifth wireless signal is the sender of the third wireless signal.

[0620] As an embodiment, the first receiver 1101 monitors corresponding physical layer signaling for each of the Q node identities in a first time-frequency resource pool. Among them, Q2 physical layer signaling are detected. The first set of wireless signals includes Q2 wireless signals. The Q2 physical layer signaling respectively include scheduling information of the Q2 wireless signals, where Q2 is a positive integer.

[0621] As an example, the first transmitter 1102 transmits third information, where the third information includes a discovery message; the first receiver 1101 receives a fourth information set and determines P candidate node identities according to the fourth information set; the first transmitter 1102 transmits a seventh radio signal, where the seventh radio signal includes fifth information, and the fifth information includes the P candidate node identities; where any information in the fourth information set includes a response to the third information; the P candidate node identities include the Q node identities; and P is a positive integer not less than Q.

[0622] As an example, the first transmitter 1102 determines a first path failure; in response to the first path failure, it transmits a ninth radio signal, where the ninth radio signal includes sixth information, and the sixth information indicates the first path failure; where the Q node identities include a first node identity; the first path includes a node identified by the first node identity; and the target receiver of the ninth radio signal includes a node identified by a node identity other than the first node identity among the Q node identities.

[0623] As an example, for any MAC SDU included in the first MAC SDU set, the first receiver 1101 distributes the any MAC SDU to the target RLC entity of the first node according to the LCID of the any MAC SDU; where the target RLC entity of the first node is independent of the node identity of the sender of the any MAC SDU.

[0624] Example 12

[0625] Embodiment 12 illustrates a structural block diagram of a processing device in a second node according to an embodiment of the present application, as shown in the appendix Figure 12 shown. In the appendix Figure 12 , the second node processing device 1200 includes a second receiver 1201 and a second transmitter 1202. The second receiver 1201 includes at least one of the transmitter / receiver 554 (including antenna 552), receiving processor 556, multi-antenna receiving processor 558, or controller / processor 559 in the appendix of the present application Figure 5 ; the second transmitter 1202 includes at least one of the transmitter / receiver 554 (including antenna 552), transmitting processor 568, multi-antenna transmitting processor 557, or controller / processor 559 in the appendix of the present application Figure 5 .

[0626] In Embodiment 12, a second transmitter 1202 transmits a fourth wireless signal and a second set of wireless signals. The fourth wireless signal includes first information. The first information includes a node identity group and a first configuration. The node identity group includes Q node identities, where Q is a positive integer greater than 1. The first configuration includes a first parameter set. One of the Q node identities is used to identify the target receiver of the fourth wireless signal. The second set of wireless signals includes a first set of MAC SDUs, which is used to generate a first set of wireless signals. The first parameter set is used to configure the radio bearers of the target receivers of the first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs. The sender of the first set of wireless signals is identified by one of the Q node identities, or the senders of Q1 wireless signals in the first set of wireless signals are respectively identified by Q1 of the Q node identities, where Q1 is a positive integer greater than 1 and not greater than Q.

[0627] As an embodiment, a second receiver 1201 receives a sixth wireless signal, which includes second information. The second information includes a response to the first information. The sender of the sixth wireless signal is the target receiver of the fourth wireless signal.

[0628] As an embodiment, physical layer signaling corresponding to each of the Q node identities is monitored in a first time-frequency resource pool. Q2 physical layer signaling are detected. The first set of wireless signals includes Q2 wireless signals. The Q2 physical layer signaling respectively include the scheduling information of the Q2 wireless signals, where Q2 is a positive integer.

[0629] As an embodiment, the second receiver 1202 receives an eighth wireless signal, which includes fifth information. The fifth information includes P candidate node identities. The P candidate node identities include the Q node identities. P is a positive integer not less than Q.

[0630] As an embodiment, the second receiver 1202 receives a tenth wireless signal, which includes sixth information. The sixth information indicates a failure of a first path. The Q node identities include a first node identity. The first path includes a node identified by the first node identity. The sender of the tenth wireless signal includes a node identified by one of the Q node identities other than the first node identity.

[0631] As an embodiment, any MAC SDU included in the first MAC SDU set comes from the RLC entity of the second node, and the LCID of any MAC SDU is the same; wherein, the RLC entity of the second node is independent of the node identity of the recipient of any MAC SDU.

[0632] As an embodiment, the second transmitter 1202 sends an eighth information set, wherein the eighth information set includes a second configuration, and the second configuration includes a second parameter set; wherein the second parameter set is used to configure the wireless bearers of the Q nodes identified by the Q node identities.

[0633] Example 13

[0634] Embodiment 13 illustrates a structural block diagram of a processing device in a third node according to an embodiment of the present application, as shown in the attached figure. Figure 13 As shown in the attached Figure 13 In the embodiment, the third node processing device 1300 includes a third receiver 1301 and a third transmitter 1302. The third receiver 1301 includes the third receiver 1301 of the present application. Figure 4 The transmitter / receiver 418 (including the antenna 420), the receiving processor 470, the multi-antenna receiving processor 472 or the controller / processor 475; the third transmitter 1302 includes the attached application Figure 4 At least one of the transmitter / receiver 418 (including antenna 420), the transmit processor 416, the multi-antenna transmit processor 471 or the controller / processor 475.

[0635] In Embodiment 13, a third receiver 1301 receives a fourth wireless signal and an eleventh wireless signal, where the eleventh wireless signal belongs to a second wireless signal set; a third transmitter 1302 transmits a third wireless signal and a twelfth wireless signal, where the twelfth wireless signal belongs to a first wireless signal set; wherein, the third wireless signal and the fourth wireless signal respectively include first information, and the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, where Q is a positive integer greater than 1; the first configuration includes a first parameter set; the first parameter set is used to configure a radio bearer of a target receiver of the twelfth wireless signal; the third node is identified by one of the Q node identities, or the senders of Q1 wireless signals in the first wireless signal set are respectively identified by Q1 of the Q node identities and the third node is identified by one of the Q1 node identities, where Q1 is a positive integer greater than 1 and not greater than Q; the first wireless signal set and the second wireless signal set respectively include a first MAC SDU set, and the first parameter set is applicable to the first MAC SDU set.

[0636] As an embodiment, the third receiver 1301 receives a fifth wireless signal; the third transmitter 1302 transmits a sixth wireless signal; wherein, the fifth wireless signal and the sixth wireless signal respectively include second information; the second information includes a response to the first information.

[0637] As an embodiment, physical layer signaling corresponding to each of the Q node identities is monitored in a first time-frequency resource pool; wherein, Q2 pieces of physical layer signaling are detected, the first wireless signal set includes Q2 wireless signals, and the Q2 pieces of physical layer signaling respectively include scheduling information of the Q2 wireless signals, where Q2 is a positive integer.

[0638] As an embodiment, the third receiver 1301 receives third information and a seventh wireless signal, where the third information includes a discovery message; the third transmitter 1302 transmits seventh information and an eighth wireless signal, where the seventh information belongs to a fourth information set; wherein, the fourth information set is used to determine P candidate node identities; the seventh information includes a response to the third information; the seventh wireless signal and the eighth wireless signal respectively include fifth information, and the fifth information includes the P candidate node identities; the P candidate node identities include the Q node identities; P is a positive integer not less than Q.

[0639] As an embodiment, the third receiver 1301 receives a ninth radio signal; the third transmitter transmits a tenth radio signal; wherein the ninth radio signal and the tenth radio signal respectively include sixth information, and the sixth information indicates a failure of a first path; the Q node identities include a first node identity; the first path includes a node identified by the first node identity; the third node is a node identified by a node identity other than the first node identity among the Q node identities.

[0640] As an embodiment, for a first MAC SDU included in the eleventh radio signal, the first MAC SDU is distributed to the RLC entity of the third node according to the LCID of the first MAC SDU; the first MAC SDU is used to generate the twelfth radio signal; wherein the RLC entity of the third node caches the first MAC SDU; the first MAC SDU belongs to the first MAC SDU set.

[0641] As an embodiment, the third receiver 1301 receives ninth information, and the ninth information belongs to an eighth information set; the ninth information includes a second configuration, and the second configuration includes a second parameter set; wherein the second parameter set is used to configure a radio bearer of the third node.

[0642] Those of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk, or an optical disc, etc. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiments can be implemented in a hardware form or in the form of a software functional module. This application is not limited to any specific form of the combination of software and hardware. The first type of communication node or UE or terminal in this application includes, but is not limited to, wireless communication devices such as mobile phones, tablet computers, notebooks, wireless network cards, low-power devices, eMTC (enhanced Machine Type Communication) devices, NB-IoT devices, vehicle-mounted communication devices, aircraft, airplanes, drones, and remote control airplanes. The second type of communication node or base station or network-side device in this application includes, but is not limited to, wireless communication devices such as macrocell base stations, microcell base stations, home base stations, relay base stations, eNBs, gNBs, transmission and reception nodes TRP (Transmission and Reception Point), relay satellites, satellite base stations, and aerial base stations.

[0643] The above are only the preferred embodiments of the present application and are not intended to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A first node used for wireless communication, characterized in that, Comprising: A first receiver that receives a third radio signal and a first set of radio signals, where the third radio signal includes first information; Wherein, the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, and Q is a positive integer greater than 1; the first configuration includes a first parameter set; one of the Q node identities is used to identify the sender of the third radio signal; The first parameter set is used to configure the radio bearer of the first node; the sender of the first set of radio signals is identified by one of the Q node identities, or the senders of Q1 radio signals in the first set of radio signals are respectively identified by Q1 of the Q node identities, where Q1 is a positive integer greater than 1 and not greater than Q; the first set of radio signals includes a first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs.

2. The first node according to claim 1, wherein Comprising: A first transmitter that, in response to the first information, sends a fifth radio signal, where the fifth radio signal includes second information; Wherein, the target receiver of the fifth radio signal is the sender of the third radio signal.

3. The first node according to claim 1 or 2, characterized in that Comprising: The first receiver monitors corresponding physical layer signaling for each of the Q node identities in a first time-frequency resource pool; Wherein, Q2 pieces of physical layer signaling are detected, the first set of radio signals includes Q2 radio signals, and the Q2 pieces of physical layer signaling respectively include scheduling information for the Q2 radio signals, and Q2 is a positive integer.

4. The first node according to any one of claims 1 to 3, characterized in that, Comprising: A first transmitter that sends third information, where the third information includes a discovery message; The first receiver receives a fourth set of information and determines P candidate node identities based on the fourth set of information; The first transmitter sends a seventh radio signal, where the seventh radio signal includes fifth information, and the fifth information includes the P candidate node identities; Wherein, any information in the fourth set of information includes a response to the third information; the P candidate node identities include the Q node identities; and P is a positive integer not less than Q.

5. The first node according to any one of claims 1 to 4, characterized in that, Comprising: A first transmitter determines a first path failure; In response to the first path failure, sends a ninth radio signal, where the ninth radio signal includes sixth information, and the sixth information indicates the first path failure; Wherein, the Q node identities include a first node identity; the first path includes a node identified by the first node identity; and the target receiver of the ninth radio signal includes a node identified by one of the Q node identities other than the first node identity.

6. The first node according to any one of claims 1 to 5, characterized in that Comprising: For any MAC SDU included in the first set of MAC SDUs, the first receiver distributes the any MAC SDU to the target RLC entity of the first node according to the LCID of the any MAC SDU; Among them, the target RLC entity of the first node is independent of the node identity of the sender of any MAC SDU.

7. A second node used for wireless communication, characterized in that, Including: A second transmitter that transmits a fourth wireless signal and a second set of wireless signals, where the fourth wireless signal includes first information; Among them, the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, where Q is a positive integer greater than 1; the first configuration includes a first parameter set; one of the Q node identities is used to identify the target receiver of the fourth wireless signal; the second set of wireless signals includes a first set of MAC SDUs, and the first set of MAC SDUs is used to generate a first set of wireless signals; the first parameter set is used to configure the radio bearer of the target receiver of the first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs; the sender of the first set of wireless signals is identified by one of the Q node identities, or the senders of Q1 wireless signals in the first set of wireless signals are respectively identified by Q1 of the Q node identities, where Q1 is a positive integer greater than 1 and not greater than Q.

8. The second node according to claim 7, wherein: A second receiver that receives a sixth wireless signal, where the sixth wireless signal includes second information; among them, the second information includes a response to the first information; the sender of the sixth wireless signal is the target receiver of the fourth wireless signal.

9. The second node according to claim 7 or 8, characterized in that Physical layer signaling corresponding to each of the Q node identities is monitored in a first time-frequency resource pool; among them, Q2 physical layer signaling are detected, the first set of wireless signals includes Q2 wireless signals, and the Q2 physical layer signaling respectively include scheduling information of the Q2 wireless signals, where Q2 is a positive integer.

10. The second node according to any one of claims 7 to 9, characterized in that, A second receiver that receives an eighth wireless signal, where the eighth wireless signal includes fifth information, and the fifth information includes P candidate node identities; among them, the P candidate node identities include the Q node identities; P is a positive integer not less than Q.

11. The second node according to any one of claims 7 to 10, characterized in that, A second receiver that receives a tenth wireless signal, where the tenth wireless signal includes sixth information; among them, the sixth information indicates a failure of a first path; the Q node identities include a first node identity; the first path includes a node identified by the first node identity; the sender of the tenth wireless signal includes a node identified by one of the Q node identities other than the first node identity.

12. The second node according to any one of claims 7 to 11, characterized in that Any MAC SDU included in the first set of MAC SDUs comes from the RLC entity of the second node, and the LCIDs of any MAC SDU are the same; among them, the RLC entity of the second node is independent of the node identity of the receiver of any MAC SDU.

13. The second node according to any one of claims 7 to 12, characterized in that, The second transmitter transmits an eighth information set, the eighth information set includes a second configuration, and the second configuration includes a second parameter set; wherein, the second parameter set is used to configure radio bearers of Q nodes identified by the Q node identities.

14. A third node used for wireless communication, characterized in that, Comprising: A third receiver receives a fourth radio signal and an eleventh radio signal, and the eleventh radio signal belongs to a second radio signal set; A third transmitter transmits a third radio signal and a twelfth radio signal, and the twelfth radio signal belongs to a first radio signal set; Wherein, the third radio signal and the fourth radio signal respectively include a first information, the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, and Q is a positive integer greater than 1; the first configuration includes a first parameter set; the first parameter set is used to configure radio bearers of a target receiver of the twelfth radio signal; the third node is identified by one of the Q node identities, or transmitters of Q1 radio signals in the first radio signal set are respectively identified by Q1 node identities among the Q node identities and the third node is identified by one of the Q1 node identities, Q1 is a positive integer greater than 1 and not greater than Q; the first radio signal set and the second radio signal set respectively include a first MAC SDU set, and the first parameter set is applicable to the first MAC SDU set.

15. The third node according to claim 14, wherein The third receiver receives a fifth radio signal; the third transmitter transmits a sixth radio signal; wherein, the fifth radio signal and the sixth radio signal respectively include a second information; the second information includes a response to the first information.

16. The third node according to claim 14 or 15, characterized in that, Physical layer signaling corresponding to each of the Q node identities is monitored in a first time-frequency resource pool; wherein, Q2 pieces of physical layer signaling are detected, the first radio signal set includes Q2 radio signals, and the Q2 pieces of physical layer signaling respectively include scheduling information of the Q2 radio signals, and Q2 is a positive integer.

17. The third node according to any one of claims 14 to 16, characterized in that The third receiver 1301 receives a third information and a seventh radio signal, the third information includes a discovery message; the third transmitter 1302 transmits a seventh information and an eighth radio signal, and the seventh information belongs to a fourth information set; wherein, the fourth information set is used to determine P candidate node identities; the seventh information includes a response to the third information; the seventh radio signal and the eighth radio signal respectively include a fifth information, the fifth information includes the P candidate node identities; the P candidate node identities include the Q node identities; P is a positive integer not less than Q.

18. The third node according to any one of claims 14 to 17, characterized in that, The third receiver 1301 receives a ninth radio signal; the third transmitter sends a tenth radio signal; wherein, the ninth radio signal and the tenth radio signal respectively include sixth information, and the sixth information indicates a failure of a first path; the Q node identities include a first node identity; the first path includes a node identified by the first node identity; the third node is a node identified by a node identity other than the first node identity among the Q node identities.

19. The third node according to any one of claims 14 to 18, characterized in that, For a first MAC SDU included in the eleventh radio signal, the first MAC SDU is distributed to the RLC entity of the third node according to the LCID of the first MAC SDU; the first MAC SDU is used to generate the twelfth radio signal; wherein, the RLC entity of the third node caches the first MAC SDU; the first MAC SDU belongs to the first MAC SDU set.

20. The third node according to any one of claims 14 to 19, characterized in that, The third receiver receives ninth information, and the ninth information belongs to an eighth information set; the ninth information includes a second configuration, and the second configuration includes a second parameter set; wherein, the second parameter set is used to configure the radio bearer of the third node.

21. A method in a first node for use in wireless communication, characterized in that, Comprising: Receiving a third radio signal and a first set of radio signals, the third radio signal including first information; Wherein, the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, Q being a positive integer greater than 1; the first configuration includes a first parameter set; one of the Q node identities is used to identify the sender of the third radio signal; The first parameter set is used to configure the radio bearer of the first node; the sender of the first set of radio signals is identified by one of the Q node identities, or the senders of Q1 radio signals in the first set of radio signals are respectively identified by Q1 node identities among the Q node identities, Q1 being a positive integer greater than 1 and not greater than Q; the first set of radio signals includes a first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs.

22. The method in the first node according to claim 21, characterized in that, Comprising: In response to the first information, sending a fifth radio signal, the fifth radio signal including second information; Wherein, the target receiver of the fifth radio signal is the sender of the third radio signal.

23. The method in the first node according to claim 21 or 22, characterized in that, Comprising: Monitoring corresponding physical layer signaling for each of the Q node identities in a first time-frequency resource pool; Wherein, Q2 pieces of physical layer signaling are detected, the first set of radio signals includes Q2 radio signals, and the Q2 pieces of physical layer signaling respectively include scheduling information of the Q2 radio signals, Q2 being a positive integer.

24. The method in the first node according to any one of claims 21 to 23, characterized in that, Comprising: Sending third information, the third information including a discovery message; Receiving a fourth set of information, and determining P candidate node identities according to the fourth set of information; Sending a seventh radio signal, the seventh radio signal including fifth information, the fifth information including the P candidate node identities; Any piece of information in the fourth information set includes a response to the third information; the P candidate node identities include the Q node identities; P is a positive integer not less than Q.

25. The method in the first node according to any one of claims 21 to 24, characterized in that, Comprising: Determine that the first path fails; In response to the failure of the first path, send a ninth radio signal, the ninth radio signal including sixth information, the sixth information indicating the failure of the first path; Wherein, the Q node identities include a first node identity; the first path includes a node identified by the first node identity; the target receiver of the ninth radio signal includes a node identified by one of the Q node identities other than the first node identity.

26. The method in the first node according to any one of claims 21 to 25, characterized in that, Comprising: For any MAC SDU included in the first MAC SDU set, distribute the any MAC SDU to the target RLC entity of the first node according to the LCID of the any MAC SDU; Wherein, the target RLC entity of the first node is independent of the node identity of the sender of the any MAC SDU.

27. A method in a second node for use in wireless communication, characterized in that, Comprising: Send a fourth radio signal and a second set of radio signals, the fourth radio signal including first information; Wherein, the first information includes a node identity group and a first configuration; the node identity group includes Q node identities, Q is a positive integer greater than 1; the first configuration includes a first parameter set; one of the Q node identities is used to identify the target receiver of the fourth radio signal; the second set of radio signals includes a first set of MAC SDUs, the first set of MAC SDUs being used to generate a first set of radio signals; the first parameter set is used to configure the radio bearer of the target receiver of the first set of MAC SDUs, the first parameter set being applicable to the first set of MAC SDUs; the sender of the first set of radio signals is identified by one of the Q node identities, or the senders of Q1 radio signals in the first set of radio signals are respectively identified by Q1 of the Q node identities, Q1 is a positive integer greater than 1 and not greater than Q.

28. The method in the second node according to claim 27, characterized in that, Comprising: Receive a sixth radio signal, the sixth radio signal including second information; Wherein, the second information includes a response to the first information; the sender of the sixth radio signal is the target receiver of the fourth radio signal.

29. The method in the second node according to claim 27 or 28, characterized in that, Comprising: Monitor the physical layer signaling corresponding to each of the Q node identities in the first time-frequency resource pool; Wherein, Q2 pieces of physical layer signaling are detected, the first set of radio signals includes Q2 radio signals, the Q2 pieces of physical layer signaling respectively include the scheduling information of the Q2 radio signals, Q2 is a positive integer.

30. The method in the second node according to any one of claims 27 to 29, characterized in that, Comprising: Receive an eighth radio signal, the eighth radio signal including fifth information, the fifth information including P candidate node identities; Wherein, the P candidate node identities include the Q node identities; P is a positive integer not less than Q.

31. The method in the second node according to any one of claims 27 to 30, characterized in that, Comprising: Receive a tenth radio signal, where the tenth radio signal includes sixth information; Wherein, the sixth information indicates a failure of a first path; the Q node identities include a first node identity; the first path includes a node identified by the first node identity; the sender of the tenth radio signal includes a node identified by one of the Q node identities other than the first node identity.

32. The method in the second node according to any one of claims 27 to 31, characterized in that, Comprising: Any MAC SDU included in the first set of MAC SDUs comes from the RLC entity of the second node, and the LCIDs of any MAC SDUs are the same; Wherein, the RLC entity of the second node has nothing to do with the node identity of the receiver of any MAC SDU.

33. The method in the second node according to any one of claims 27 to 32, characterized in that Comprising: Transmit an eighth set of information, where the eighth set of information includes a second configuration, and the second configuration includes a second parameter set; Wherein, the second parameter set is used to configure the radio bearers of the Q nodes identified by the Q node identities.

34. A method in a third node used for wireless communication, characterized in that, Comprising: Receive a fourth radio signal and an eleventh radio signal, where the eleventh radio signal belongs to a second set of radio signals; Transmit a third radio signal and a twelfth radio signal, where the twelfth radio signal belongs to a first set of radio signals; Wherein, the third radio signal and the fourth radio signal respectively include first information, and the first information includes a group of node identities and a first configuration; the group of node identities includes Q node identities, where Q is a positive integer greater than 1; the first configuration includes a first parameter set; the first parameter set is used to configure the radio bearer of the target receiver of the twelfth radio signal; the third node is identified by one of the Q node identities, or the senders of Q1 radio signals in the first set of radio signals are respectively identified by Q1 of the Q node identities and the third node is identified by one of the Q1 node identities, where Q1 is a positive integer greater than 1 and not greater than Q; the first set of radio signals and the second set of radio signals respectively include a first set of MAC SDUs, and the first parameter set is applicable to the first set of MAC SDUs.

35. The method in the third node according to claim 34, characterized in that, Comprising: Receive a fifth radio signal; Transmit a sixth radio signal; Wherein, the fifth radio signal and the sixth radio signal respectively include second information; the second information includes a response to the first information.

36. The method in the third node according to claim 34 or 35, characterized in that, Comprising: Monitor physical layer signaling corresponding to each of the Q node identities in a first time-frequency resource pool; Wherein, Q2 physical layer signaling are detected, the first set of radio signals includes Q2 radio signals, and the Q2 physical layer signaling respectively include scheduling information of the Q2 radio signals, where Q2 is a positive integer.

37. The method in the third node according to any one of claims 34 to 36, characterized in that, Comprising: Receive third information and a seventh radio signal, where the third information includes a discovery message; Transmit seventh information and an eighth radio signal, where the seventh information belongs to a fourth set of information; Among them, the fourth information set is used to determine the identities of P candidate nodes; the seventh information includes a response to the third information; the seventh wireless signal and the eighth wireless signal respectively include fifth information, and the fifth information includes the identities of the P candidate nodes; the identities of the P candidate nodes include the identities of the Q nodes; P is a positive integer not less than Q.

38. The method in the third node according to any one of claims 34 to 37, characterized in that, Including: Receiving a ninth wireless signal; Sending a tenth wireless signal; Among them, the ninth wireless signal and the tenth wireless signal respectively include sixth information, and the sixth information indicates a failure of a first path; the identities of the Q nodes include a first node identity; the first path includes a node identified by the first node identity; the third node is a node identified by one of the identities of the Q nodes other than the first node identity.

39. The method in the third node according to any one of claims 34 to 38, characterized in that, Including: For a first MAC SDU included in the eleventh wireless signal, distributing the first MAC SDU to the RLC entity of the third node according to the LCID of the first MAC SDU; the first MAC SDU is used to generate the twelfth wireless signal; Among them, the RLC entity of the third node caches the first MAC SDU; the first MAC SDU belongs to the first MAC SDU set.

40. The method in the third node according to any one of claims 34 to 39, characterized in that, Including: Receiving ninth information, where the ninth information belongs to an eighth information set; the ninth information includes a second configuration, and the second configuration includes a second parameter set; Among them, the second parameter set is used to configure the radio bearer of the third node.

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