A method and apparatus for wireless communication

Abstract

The application discloses a method and device for wireless communication, comprising receiving first signaling, the first signaling is used for configuring a first bearer and a second bearer, the first bearer and the second bearer are both associated with a first cell group; the first cell group is a master cell group; detecting that a target bearer is invalid; in response to detecting that the target bearer is invalid, performing a first operation set; the first operation set is related to whether the target bearer is the first bearer or the second bearer. By detecting that the target bearer is invalid and performing the first operation set, the application helps network optimization, improves the reliability of communication, and avoids communication interruption.

Description

Technical Field

[0001] This application relates to transmission methods and apparatus in wireless communication systems, and more particularly to methods and apparatus for network optimization, improving service quality, and relay communication in communications. Background Technology

[0002] The application scenarios of future wireless communication systems are becoming increasingly diversified, and different application scenarios place different performance requirements on the system. In order to meet the different performance requirements of various application scenarios, the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting decided to conduct research on New Radio (NR) (or Fifth Generation, 5G). The 3GPP RAN #75 plenary meeting adopted the NR WI (Work Item), and began the standardization work of NR.

[0003] In communications, both LTE (Long Term Evolution) and 5G NR involve reliable and accurate information reception, optimized energy efficiency, determination of information validity, flexible resource allocation, scalable system architecture, efficient non-access stratum information processing, low service interruption and drop rate, and support for low power consumption. These are crucial for normal communication between base stations and user equipment, rational resource scheduling, and balanced system load. They are the cornerstone of high throughput, meeting the communication needs of various services, improving spectrum utilization, and enhancing service quality. They are indispensable for eMBB (enhanced Mobile Broadband), URLLC (Ultra Reliable Low Latency Communication), and eMTC (enhanced Machine Type Communication). Meanwhile, there are extensive needs in IIoT (Industrial Internet of Things), V2X (Vehicle-to-X), Device-to-Device communication, unlicensed spectrum communication, user communication quality monitoring, network planning and optimization, NTN (Non-Territorial Network), TN (Territorial Network), dual connectivity systems, radio resource management and codebook selection for multiple antennas, signaling design, neighbor cell management, service management, and beamforming. Information transmission methods are divided into broadcast and unicast, both essential for 5G systems as they are highly helpful in meeting the above requirements. The UE can connect to the network directly or via a relay.

[0004] As system scenarios and complexity continue to increase, higher demands are placed on reducing interruption rates, reducing latency, enhancing reliability, improving system stability, increasing business flexibility, and saving power. At the same time, compatibility between different systems and versions needs to be considered during system design.

[0005] The 3GPP standardization organization has done relevant standardization work for 5G, resulting in a series of standards. The content of these standards can be found here:

[0006] https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.211 / 38211-g60.zip

[0007] https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.213 / 38213-g60.zip

[0008] https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.331 / 38331-g60.zip Summary of the Invention

[0009] Relays are used in various communication scenarios. For example, when a UE (User Equipment) is at the cell edge with poor coverage, it can access the network through a relay, which can be another UE. Relays mainly include Layer 3 relays and Layer 2 relays (L2U2N relays). Both provide network access services to remote UEs (U2N remote UEs) through relay nodes. Layer 3 relays are transparent to the access network; the remote UE only establishes a connection with the core network, and the access network cannot distinguish whether data originates from a remote node or a relay node. In contrast, with Layer 2 relays, the remote UE and the access network (RAN) have an RRC connection. The access network can manage the remote node, and a radio bearer can be established between the access network and the remote node. The relay can be another UE. In systems supporting Layer 2 relays, a UE can communicate with the network through an L2 U2N relay UE (using an indirect path) or directly without a relay (using a direct path). In some scenarios, a UE can simultaneously use direct and indirect paths to achieve better reliability and higher throughput. Direct and indirect paths differ in terms of radio resource management and network optimization. One does not use relays, while the other does. Relay nodes may provide services to multiple nodes, therefore the throughput, QoS, and functionality of the two paths may differ. In some scenarios, indirect and direct paths are not interchangeable. Therefore, the handling methods for direct and indirect path failures should also differ; otherwise, their different characteristics cannot be taken into account, potentially leading to network communication failures. For example, since indirect paths cannot provide complete functionality (e.g., only certain user plane functions), relying solely on indirect paths after a direct path failure cannot guarantee normal communication. For UEs connecting to the network via multiple paths, how to take appropriate measures for different path failures is the problem this application aims to solve. Of course, the solution proposed in this application can also solve other problems in communication systems, not limited to those mentioned above.

[0010] To address the problems mentioned above, this application provides a solution.

[0011] It should be noted that, unless otherwise specified, the embodiments and features in any node of this application can be applied to any other node. Furthermore, unless otherwise specified, the embodiments and features in any embodiment of this application can be arbitrarily combined with each other.

[0012] This application discloses a method used in a first node of wireless communication, comprising:

[0013] Receive first signaling, the first signaling being used to configure a first bearer and a second bearer, both of which are associated with a first cell group; the first cell group is a primary cell group; detect target bearer failure;

[0014] In response to the detection of a target bearer failure, a first set of operations is executed; the first set of operations is related to whether the target bearer is the first bearer or the second bearer.

[0015] Wherein, the second bearer is associated with the first relay, and the first relay is an L2 U2N relay UE; the meaning of the sentence "the first set of operations relates to whether the target bearer is the first bearer or the second bearer" is as follows: when the target bearer is the first bearer, the first set of operations includes at least the former of sending an RRC message and receiving an RRC message, and the first set of operations includes at least one of cell selection and relay selection; when the target bearer is the second bearer, the first set of operations includes sending first information, the first information being used to indicate that the target bearer has failed.

[0016] As an example, the problem this application aims to solve includes: in scenarios using L2 relays, especially when both direct and indirect paths are used simultaneously, taking corresponding measures to address the failure of different paths in order to ensure reliable and stable communication.

[0017] As an example, the advantages of the above method include: when using L2 relay, especially when using multiple paths to communicate with the network simultaneously, if one path fails, the normal operation of network communication can be guaranteed as much as possible, and a rapid recovery can be performed, reducing recovery latency, reducing communication interruptions, improving service quality, increasing coverage, and providing better support for mobility and service continuity.

[0018] Specifically, according to one aspect of this application, the SRB1 of the first node is associated only with the first bearer of the first bearer and the second bearer.

[0019] Specifically, according to one aspect of this application, the SRB1 of the first node is associated with both the first bearer and the second bearer.

[0020] Specifically, according to one aspect of this application, the first set of operations includes: releasing the second bearer and suspending the SRB1 associated with the target bearer; the first set of operations includes: performing either cell selection or relay selection;

[0021] The first set of operations includes sending an RRC reconstruction request message.

[0022] Specifically, according to one aspect of this application, the first set of operations includes: performing at least one operation from the second set of operations only for the former of the first bearer and the second bearer;

[0023] The second set of operations includes suspend, rebuild, and release.

[0024] Specifically, according to one aspect of this application, whether the first set of operations includes initiating random access depends on whether the target bearer is the first bearer or the second bearer; when the target bearer is the first bearer, the first set of operations includes initiating a random access procedure; when the target bearer is the second bearer, the first set of operations does not include initiating a random access procedure.

[0025] Specifically, according to one aspect of this application, a second signaling is received, and in response to receiving the second signaling, a first timer is started;

[0026] Specifically, when the action detects a target bearer failure and is executed, the first timer is in a running state; the second signaling includes a first field, the first field being reconfigurationWithSync, which is used to indicate path translation for the second bearer, the target bearer being the first bearer; the first timer is a timer other than T304.

[0027] Specifically, according to one aspect of this application, in response to receiving the second sub-signaling, a first timer is started, the third bearer is suspended, and the second bearer is configured;

[0028] The first set of operations includes: activating the third bearer; the first set of operations includes at least one of suspending the second bearer, releasing the second bearer, and reconstructing the second bearer; the first signaling includes a first sub-signaling, a second sub-signaling, and a third sub-signaling, wherein the first sub-signaling is used to configure the first bearer, the third sub-signaling is used to configure the third bearer, and the second sub-signaling is used to configure the second bearer; the third bearer is associated with a second relay, which is an L2 U2N relay UE, and the first relay is different from the second relay; the third bearer is associated with the first cell group; the target bearer is the second bearer; the second sub-signaling includes a first field, which is `reconfigurationWithSync`, and is used to indicate path transition for the third bearer; the first timer is a timer other than T304; the behavior of detecting target bearer failure includes detecting that the first timer has expired.

[0029] Specifically, according to one aspect of this application, a third signaling is received, the third signaling being used to instruct a path transition for the target bearer;

[0030] The first set of operations includes: executing the third signaling; the reception of the third signaling occurs before the action detects a target bearer failure.

[0031] Specifically, according to one aspect of this application, receiving a fourth signaling message, the fourth signaling message being used to configure a fourth bearer; the behavior of configuring the fourth bearer includes setting the fourth bearer to an inactive state;

[0032] Wherein, the first set of operations includes: activating the fourth bearer; the first set of operations includes at least one of: suspending the second bearer, deactivating the second bearer, and releasing the second bearer; the target bearer is the second bearer.

[0033] Specifically, according to one aspect of this application, the first node is an Internet of Things (IoT) terminal.

[0034] Specifically, according to one aspect of this application, the first node is a relay.

[0035] Specifically, according to one aspect of this application, the first node is a U2N remote UE.

[0036] Specifically, according to one aspect of this application, the first node is an in-vehicle terminal.

[0037] Specifically, according to one aspect of this application, the first node is an aircraft.

[0038] Specifically, according to one aspect of this application, the first node is a mobile phone.

[0039] Specifically, according to one aspect of this application, the first node is a communication terminal that supports multi-SIM card communication.

[0040] This application discloses a first node used for wireless communication, comprising:

[0041] A first receiver receives a first signaling message, which is used to configure a first bearer and a second bearer, both of which are associated with a first cell group; the first cell group is a primary cell group; a target bearer failure is detected.

[0042] A first processor, in response to the detection of a target bearer failure, executes a first set of operations; the first set of operations is related to whether the target bearer is the first bearer or the second bearer;

[0043] Wherein, the second bearer is associated with the first relay, and the first relay is an L2 U2N relay UE; the meaning of the sentence "the first set of operations relates to whether the target bearer is the first bearer or the second bearer" is as follows: when the target bearer is the first bearer, the first set of operations includes at least the former of sending an RRC message and receiving an RRC message, and the first set of operations includes at least one of cell selection and relay selection; when the target bearer is the second bearer, the first set of operations includes sending first information, the first information being used to indicate that the target bearer has failed.

[0044] As an example, compared with conventional solutions, this application has the following advantages:

[0045] Supports relay, especially handling including recovery when the bearer fails when using L2 U2N (UE to Network) relay UE.

[0046] It supports handling the failure of one of the direct and indirect paths when both are configured simultaneously. In particular, it ensures normal communication without interference when one bearer or path fails while the other has not failed.

[0047] The network supports different configurations and processing for direct and indirect paths, i.e., functional differentiation. This simplifies failure handling and increases throughput. When an indirect path does not have all functions, such as when it is only used to transmit user plane data, it can be stopped, started, activated, deactivated, and released more quickly and flexibly without affecting the transmission of signaling between the remote node and the network, i.e., without affecting the control plane.

[0048] When a path, such as an indirect path, fails, it can be quickly switched between multiple candidate paths through methods such as suspension and activation, thereby ensuring business continuity. Attached Figure Description

[0049] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0050] Figure 1 A flowchart illustrating receiving first signaling, detecting target bearer failure, and executing a first set of operations according to an embodiment of this application is shown.

[0051] Figure 2 A schematic diagram of a network architecture according to an embodiment of this application is shown;

[0052] Figure 3 A schematic diagram of an embodiment of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application is shown;

[0053] Figure 4 A schematic diagram of a first communication device and a second communication device according to an embodiment of this application is shown;

[0054] Figure 5 A flowchart of wireless signal transmission according to an embodiment of this application is shown;

[0055] Figure 6 A flowchart of wireless signal transmission according to an embodiment of this application is shown;

[0056] Figure 7 A schematic diagram of a relay communication protocol stack according to an embodiment of this application is shown;

[0057] Figure 8 A schematic diagram of a topology according to an embodiment of this application is shown;

[0058] Figure 9 A schematic diagram is shown illustrating how first information, according to one embodiment of this application, is used to indicate target bearer failure;

[0059] Figure 10 A schematic diagram is shown illustrating a first field used to indicate a path transition for a second bearer according to an embodiment of this application;

[0060] Figure 11 A schematic diagram is shown illustrating a first field used to indicate a path transition for a third bearer according to an embodiment of this application;

[0061] Figure 12A schematic diagram is shown illustrating how third signaling according to one embodiment of this application is used to indicate a path transition for a target bearer;

[0062] Figure 13 A schematic diagram of a processing apparatus for a first node according to an embodiment of this application is illustrated. Implementation

[0063] The technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0064] Example 1

[0065] Example 1 illustrates a flowchart of receiving first signaling, detecting target bearer failure, and executing a first set of operations according to an embodiment of this application, as shown in the attached diagram. Figure 1 As shown. (Attached) Figure 1 In the diagram, each box represents a step. It is particularly important to emphasize that the order of the boxes does not represent the chronological order of the steps they represent.

[0066] In Embodiment 1, the first node in this application receives the first signaling in step 101, detects the target bearer failure in step 102, and executes the first set of operations in step 103;

[0067] The first signaling is used to configure the first bearer and the second bearer, both of which are associated with the first cell group; the first cell group is the primary cell group.

[0068] The first node, in response to the detection of a target bearer failure, executes a first set of operations; the first set of operations is related to whether the target bearer is the first bearer or the second bearer.

[0069] The second bearer is associated with the first relay, which is an L2 U2N relay UE; the meaning of the sentence "the first set of operations relates to whether the target bearer is the first bearer or the second bearer" is as follows: when the target bearer is the first bearer, the first set of operations includes at least the former of sending an RRC message and receiving an RRC message, and the first set of operations includes at least one of cell selection and relay selection; when the target bearer is the second bearer, the first set of operations includes sending first information, which is used to indicate that the target bearer has failed.

[0070] As an example, the first node is UE (User Equipment).

[0071] As an example, the first node is in RRC connected state.

[0072] As an example, the direct path refers to a transmission path from the UE to the network, meaning that data is sent between the UE and the network (U2N) without relaying.

[0073] As a sub-implementation of this embodiment, the data includes higher-level data and signaling.

[0074] As a sub-example of this embodiment, the data includes RRC signaling.

[0075] As a sub-example of this embodiment, the data includes bit strings or bit blocks.

[0076] As a sub-implementation of this embodiment, the data only includes signaling or data carried by the RB (radio bearer).

[0077] As an example, the indirect path refers to a transmission path from the UE to the network. Transmission via the indirect path means that data is forwarded between the remote UE and the network in the UE-to-Network (U2N) through a relay UE.

[0078] As a sub-implementation of this embodiment, the data includes higher-level data and signaling.

[0079] As a sub-example of this embodiment, the data includes RRC signaling.

[0080] As a sub-example of this embodiment, the data includes bit strings or bit blocks.

[0081] As a sub-implementation of this embodiment, the data only includes signaling or data carried by the RB (radio bearer).

[0082] As an example, a wireless link is either a direct path or a non-direct path.

[0083] As an example, a U2N relay UE refers to a UE that provides the functionality to support U2N remote UEs to connect to the network.

[0084] As an example, a U2N remote UE refers to a UE that needs to communicate with the network through a U2N relay UE.

[0085] As an example, a U2N remote UE refers to a UE that needs to communicate with the network through a U2N relay UE.

[0086] As an example, a U2N remote UE refers to a UE that supports relay services and communicates with the network.

[0087] As an example, a U2N relay is a U2N relay UE.

[0088] As an example, when sending and receiving unicast services with the network, both the U2N relay and the U2N remote node are in RRC connection state.

[0089] As an example, when the U2N remote UE is in the RRC idle state or the RRC inactive state, the U2N relay UE can be in any RRC state, including the RRC connected state, the RRC idle state, and the RRC inactive state.

[0090] As an example, transmission without a direct path is equivalent to transmission via a non-direct path.

[0091] As one example, transmission not via a direct path includes transmission via a relay.

[0092] As one example, transmission via a direct path may include transmission without relays.

[0093] As an example, transmission via a direct path may include or may include transmission without relay forwarding.

[0094] As an example, a U2N relay UE is a UE that provides connectivity support to the network for U2N remote UEs.

[0095] As a sub-implementation of this embodiment, the U2N relay UE is a UE.

[0096] As a sub-implementation of this embodiment, the U2N relay UE provides relay services to the network for the U2N remote UE.

[0097] As an example, a U2N remote UE is a UE that communicates with the network through a U2N relay UE.

[0098] As an example, the direct mode is the mode that uses the direct path.

[0099] As an example, the direct connection mode is a mode in which the U2N remote UE communicates with the network using the direct path.

[0100] As an example, the direct connection mode is a mode in which the U2N remote UE uses the direct path to transmit RRC signaling or establish an RRC connection with the network.

[0101] As an example, the indirect mode is the mode that uses the indirect path.

[0102] As an example, the non-direct connection mode is the mode that uses the non-direct path.

[0103] As an example, the direct connection mode is a mode in which the U2N remote UE communicates with the network using the non-direct path.

[0104] As an example, the direct connection mode is a mode in which the U2N remote UE uses the indirect path to transmit RRC signaling or establish an RRC connection with the network.

[0105] As an example, the serving cell is or includes the cell where the UE camps. Performing a cell search includes the UE searching for a suitable cell within a selected PLMN (Public Land Mobile Network) or SNPN (Stand-alone Non-Public Network), selecting the suitable cell to provide available services, and monitoring the control channel of the suitable cell. This process is defined as camping on a cell; that is, a camped cell is the serving cell for the UE. Camping on a cell in RRC idle or RRC inactive state has the following advantages: it allows the UE to receive system messages from the PLMN or SNPN; after registration, if the UE wishes to establish an RRC connection or continue a suspended RRC connection, the UE can perform initial access on the control channel of the camped cell; the network can page the UE; and the UE can receive ETWS (Earthquake and Tsunami Warning System) and CMAS (Commercial Mobile Alert System) notifications.

[0106] As an example, for a U2N remote node, the serving cell is or includes the cell where the U2N relay is based or connected.

[0107] As an example, for a UE in RRC connected state without CA / DC (carrier aggregation / dual connectivity) configured, there is only one serving cell, including the primary cell. For a UE in RRC connected state with CA / DC configured, the serving cell is used to indicate the set of cells including the special cell (SpCell) and all cells from smaller cells. The primary cell is an MCG (Master Cell Group) cell, operating on the primary frequency. The UE performs the initial connection establishment process or initiates connection reconstruction on the primary cell. For dual connectivity operations, the special cell refers to the PCell (Primary Cell) of the MCG or the PSCell (Primary SCGCell) of the SCG (Secondary Cell Group); if it is not a dual connectivity operation, the special cell refers to the PCell.

[0108] As an example, the frequency at which the SCell (Secondary Cell) operates is the frequency of the cell.

[0109] As an example, the individual content of an information element is called a field.

[0110] As an example, MR-DC (Multi-Radio Dual Connectivity) refers to dual connectivity between an E-UTRA and an NR node, or dual connectivity between two NR nodes.

[0111] As an example, in MR-DC, the radio access node that provides control plane connection to the core network is the master node, which can be a master eNB, a master ng-eNB, or a master gNB.

[0112] As an example, MCG refers to a group of serving cells associated with the master node in MR-DC, including SpCell, and optionally, one or more SCell.

[0113] As an example, PCell is the SpCell of MCG.

[0114] As an example, PSCell is the SpCell of SCG.

[0115] As an example, in MR-DC, no control plane connection to the core network is provided; instead, the radio access node that provides additional resources to the UE is a slave node. The slave node can be an en-gNB, an ng-eNB, or a gNB.

[0116] As an example, in MR-DC, the set of serving cells associated with a slave node is an SCG (secondary cell group), which includes SpCell and, optionally, one or more SCells.

[0117] As an example, the access layer function that enables V2X (Vehicle-to-Everything) communication defined in 3GPP standard TS 23.285 is V2X sidelink communication, which occurs between adjacent UEs and uses E-UTRA technology but does not traverse network nodes.

[0118] As an example, at least the access layer function that enables V2X (Vehicle-to-Everything) communication defined in 3GPP standard TS 23.287 is NR sidelink communication, which occurs between two or more adjacent UEs and uses NR technology but does not traversing network nodes.

[0119] As an example, a secondary link is a direct communication link between UEs using a secondary link resource allocation mode, physical layer signals or channels, and physical layer procedures.

[0120] As an example, not being or not being within the coverage area is equivalent to being outside the coverage area.

[0121] As an example, "within the coverage" is equivalent to "within the coverage area".

[0122] As an example, "outside the coverage" is equivalent to "outside the coverage".

[0123] As an example, the first node is a U2N remote node.

[0124] As an example, the PDCP entity corresponding to the radio bearer terminating between the UE and the network is located in both the UE and the network.

[0125] As an example, the direct path is the communication link, channel, or bearer used when transmitting through the direct path.

[0126] As an example, the direct path transmission refers to the data carried by at least the SRB (Signaling radio bearer) between the UE and the network without being relayed or forwarded by other nodes.

[0127] As an example, the direct path transmission refers to the RLC bearer associated with at least one SRB (Signaling radio bearer) between the UE and the network terminating at the UE and the network, respectively.

[0128] As an example, the direct path transmission refers to the RLC entity associated with at least one SRB (Signaling radio bearer) between the UE and the network terminating at the UE and the network, respectively.

[0129] As an example, the direct path transmission refers to a direct communication link between the UE and the network.

[0130] As an example, the direct path transmission refers to the existence of a Uu interface between the UE and the network.

[0131] As an example, the direct path transmission refers to the existence of a MAC layer with a Uu interface between the UE and the network, and the MAC layer of the Uu interface carries RRC signaling.

[0132] As an example, the direct path transmission refers to the physical layer where there is a Uu interface between the UE and the network.

[0133] As an example, the direct path transmission refers to the existence of a logical channel and / or a transport channel between the UE and the network.

[0134] As an example, the indirect path is the indirect path, communication link, channel, or bearer used when transmitting through the indirect path.

[0135] As an example, the indirect path transmission refers to the data carried by at least the SRB (Signaling radio bearer) between the UE and the network being relayed or forwarded by other nodes.

[0136] As an example, the indirect path transmission refers to the RLC bearer associated with at least the SRB (Signaling radio bearer) between the UE and the network terminating between the UE and other nodes, and between other nodes and the network.

[0137] As an example, the indirect path transmission refers to the RLC entity associated with at least one SRB (Signaling radio bearer) between the UE and the network terminating between the UE and other nodes, and between other nodes and the network.

[0138] As an example, the phrase "at least SRB" means at least one of {SRB0, SRB1, SRB2, SRB3}.

[0139] As an example, the phrase SRB at least includes the meaning of SRB and DRB (data radio bearer).

[0140] As an example, the indirect path transmission refers to the absence of a direct communication link between the UE and the network.

[0141] As an example, the non-direct path transmission refers to the absence of a MAC layer with a Uu interface between the UE and the network.

[0142] As an example, the non-direct path transmission refers to the absence of a physical layer with a Uu interface between the UE and the network.

[0143] As an example, the non-direct path transmission refers to a situation where there is neither a logical channel nor a transmission channel between the UE and the network.

[0144] As one embodiment, the network includes a radio access network (RAN) and / or serving cells and / or base stations.

[0145] As an example, the phrase UE and the UE in the network include the first node.

[0146] As one example, the other nodes include relay nodes or other UEs.

[0147] As an example, when using direct path transmission, the UE can send physical layer signaling to the network; when using non-direct path transmission, the UE cannot send or directly send physical layer signaling to the network.

[0148] As an example, when using direct path transmission, the UE can send a MAC CE to the network; when using non-direct path transmission, the UE cannot send or directly send a MAC CE to the network.

[0149] As an example, when using direct path transmission, there are no other protocol layers between the PDCP layer and the RLC layer of the first node; when using non-direct path transmission, there are other protocol layers between the PDCP layer and the RLC layer of the first node.

[0150] As a sub-implementation of this embodiment, the other protocol layers are or include adaptation layers.

[0151] As an example, when using direct path transmission, the network directly schedules the uplink transmission of the first node through DCI; when using non-direct path transmission, the network does not directly schedule the uplink transmission of the first node through DCI.

[0152] As an example, when using direct path transmission, the SRB of the first node is associated with the RLC entity and / or the RLC layer and / or the RLC bearer; when using non-direct path transmission, the SRB of the first node is associated with the RLC entity of the PC5 interface.

[0153] As an example, when using direct path transmission, the SRB of the first node is mapped to the RLC entity of the Uu interface; when using non-direct path transmission, the SRB of the first node is mapped to the RLC entity of the PC5 interface.

[0154] As an example, there is a direct path and / or an indirect path between the first node and the network.

[0155] As an example, switching from a direct path to a non-direct path means starting to use a non-direct path while stopping the use of a direct path.

[0156] As an example, switching from a direct path to a non-direct path means starting to use non-direct path transmission while stopping the use of direct path transmission.

[0157] As an example, switching from a direct path to a non-direct path means changing the transmission from a direct path to a non-direct path.

[0158] As an example, the transition from a direct path to a non-direct path means that the first node associates the SRB with the RLC entity of the PC5 interface, while releasing the RLC entity of the Uu interface associated with the SRB.

[0159] As an example, the transition from a direct path to a non-direct path means that the first node associates the SRB and DRB with the RLC entity of the PC5 interface, while releasing the RLC entity of the Uu interface associated with the SRB and DRB.

[0160] As an example, switching from an indirect path to a direct path means: starting to use direct paths while stopping the use of indirect paths.

[0161] As an example, switching from a non-direct path to a direct path means starting to use direct path transmission while stopping the use of non-direct path transmission.

[0162] As an example, the meaning of switching from an indirect path to a direct path is: the transmission from an indirect path to a direct path.

[0163] As an example, the transition from a non-direct path to a direct path means that the first node releases the RLC entity of the PC5 interface associated with the SRB, while associating the SRB with the RLC entity of the Uu interface.

[0164] As an example, the transition from a non-direct path to a direct path means that the first node releases all RLC entities of the PC5 interface associated with the DRB, while associating the DRB with the RLC entities of the Uu interface.

[0165] As an example, the first node supports the conversion from indirect path to indirect path.

[0166] As an example, when the first node uses a non-direct path, the relay used by the non-direct path is the first relay.

[0167] As an example, the relay in this application refers to a U2N relay UE.

[0168] As an example, the first node is in RRC connected state.

[0169] As an example, the first node in this application does not use DC (dual connectivity).

[0170] As an example, the first node in this application is not configured with DC (dual connectivity).

[0171] As an example, the first node in this application has only one cell group.

[0172] As an example, the first node in this application has only one cell group, namely the primary cell group (MCG).

[0173] As an example, the first node in this application is not configured to be from a cell group (SCG).

[0174] As an example, the relay in this application refers to an L2 U2N relay UE.

[0175] As an example, the first node in this application uses both direct and indirect paths.

[0176] As one embodiment, the first bearer is a direct path; the second bearer is a non-direct path.

[0177] As an example, both the first bearer and the second bearer are non-direct paths.

[0178] As an example, the first bearer is an RLC bearer; the second bearer is a PC5 RLC bearer.

[0179] As an example, the first bearer is a Uu RLC bearer; the second bearer is a PC5 RLC bearer.

[0180] As one embodiment, the first bearer is a primary wireless link; the second bearer is a secondary wireless link.

[0181] As one embodiment, the first bearer is a DRB; the second bearer is an MRB.

[0182] As one embodiment, the first bearer is an SRB; the second bearer is a DRB.

[0183] As one embodiment, the first bearer is an SRB; the second bearer is an MRB.

[0184] As one embodiment, the first bearer is an MRB; the second bearer is a DRB or an SRB.

[0185] As one embodiment, the first bearer is a radio link between the first node and the first cell group; the second bearer is a secondary radio link between the first node and the first relay, and the first relay is an L2 U2N relay UE between the first node and the first cell group.

[0186] As an example, both the first bearer and the second bearer are AS layer bearers.

[0187] As one embodiment, one of the first bearer and the second bearer is an AS layer bearer and the other is a NAS layer bearer.

[0188] As a sub-implementation of this embodiment, the first bearer is an AS layer bearer, and the second bearer is a NAS layer bearer.

[0189] As a sub-implementation of this embodiment, the second bearer is an AS layer bearer, and the first bearer is a NAS layer bearer.

[0190] As one example, the first bearer is the channel of the primary link, and the second bearer is the channel of the secondary link.

[0191] As a sub-example of this embodiment, the main link is a non-relay wireless link between the first node and the base station of the first cell group or the first cell group.

[0192] As one embodiment, the first bearer is the physical channel of the primary link, and the second bearer is the physical channel of the secondary link.

[0193] As a sub-example of this embodiment, the main link is a non-relay wireless link between the first node and the base station of the first cell group or the first cell group.

[0194] As one embodiment, the first bearer is the transmission channel of the primary link, and the second bearer is the transmission channel of the secondary link.

[0195] As a sub-example of this embodiment, the main link is a link between the first node and the base station of the first cell group or the first cell group that does not go through a relay.

[0196] As one embodiment, the first bearer is the logical channel of the primary link, and the second bearer is the logical channel of the secondary link.

[0197] As a sub-example of this embodiment, the main link is a non-relay wireless link between the first node and the base station of the first cell group or the first cell group.

[0198] As one embodiment, the second bearer includes a secondary wireless link between the first node and the first relay and a wireless link between the first relay and the first cell group.

[0199] As one embodiment, the second bearer includes the secondary link RLC bearer between the first node and the first relay and the RLC bearer between the first relay and the first cell group.

[0200] As one embodiment, the second bearer includes the channel between the first node and the first relay and the channel between the first relay and the first cell group.

[0201] As one embodiment, the second bearer includes the bearer between the first node and the first relay and the bearer between the first relay and the first cell group.

[0202] As an example, the target bearer is a direct path.

[0203] As an example, the target bearer is a non-direct path.

[0204] As an example, the target bearer is a wireless bearer.

[0205] As an example, the target bearer is an RLC bearer.

[0206] As an example, the target bearer is a secondary link RLC bearer.

[0207] As an example, the target bearer is a unicast bearer.

[0208] As one example, the target bearer is a broadcast, multicast, or multicast bearer.

[0209] As an example, the target bearer is a wireless link.

[0210] As an example, the target bearer is a secondary link.

[0211] As an example, the target bearer is a communication link.

[0212] As an example, the target bearer is a channel.

[0213] As an example, the target bearer is a network channel.

[0214] As an example, the target bearer belongs to the AS layer.

[0215] As one embodiment, the target bearer is the wireless link between the first node and the first cell group.

[0216] As an example, the target bearer is a secondary link radio link between the first node and the first relay, and the target bearer is associated with at least one of the first node's DRB, SRB, or MRB, and the first node's DRB, SRB, or MRB is a radio bearer between the first node and the first cell group.

[0217] As one embodiment, the target bearer is a secondary wireless link between the first node and the first relay, and the target bearer is used to transmit PDCP PDUs for the first cell group.

[0218] As one embodiment, the target bearer is a direct link between the first node and the first relay, and the direct link is used to transmit data between the first node and the first cell group.

[0219] As one embodiment, the target bearer is a direct unicast link between the first node and the first relay, and the direct unicast link is used to transmit data between the first node and the first cell group.

[0220] As an example, the phrase "target bearer failure" refers to a radio link failure occurring in the target bearer.

[0221] As an example, the phrase "target bearer failure" refers to a sidelink radio link failure occurring in the target bearer.

[0222] As an example, the phrase "target bearer failure" means that the target bearer has failed.

[0223] As an example, the phrase "target bearer failure" refers to an irrecoverable failure of the target bearer.

[0224] As an example, the phrase "target bearer failure" means that the target bearer can no longer be used.

[0225] As an example, the phrase "target bearer failure" means that the target bearer must be released or suspended.

[0226] As an example, the phrase "target bearer failure" refers to the failure of the link to which the target bearer belongs.

[0227] As an example, the phrase "target bearer failure" means that the target bearer is invalid or illegal.

[0228] As an example, the phrase "target bearer failure" means that the target bearer needs to be stopped from use.

[0229] As an example, the phrase "target bearer failure" means that data transmission on the target bearer needs to be stopped.

[0230] As an example, the phrase "target bearer failure" means that it is necessary to stop receiving data on the target bearer.

[0231] As an example, the phrase "target bearer failure" means that it is necessary to stop sending data on the target bearer, but it is possible to continue receiving data on the target bearer.

[0232] As an example, the phrase "target bearer failure" refers to the need to release the direct unicast link associated with the target bearer.

[0233] As an example, the first cell group is an MCG.

[0234] As an example, the first cell group includes only PCell.

[0235] As an example, the first cell group includes a PCell and at least one SCell.

[0236] As an example, the phrase "both the first bearer and the second bearer are associated with the first cell group" means that the first bearer is associated with the first cell group and the second bearer is associated with the first cell group.

[0237] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer is a bearer between the first node and the first cell group.

[0238] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer terminates at the first node and the first cell group.

[0239] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer terminates at the base station of the first node and the first cell group.

[0240] As an example, the phrase "the first bearer is associated with the first cell group" means that the PDCP entity corresponding to the first bearer is located in the first node and the first cell group, respectively.

[0241] As an example, the phrase "the first bearer is associated with the first cell group" means that the RLC entity corresponding to the first bearer is located in the first node and the first cell group, respectively.

[0242] As an example, the phrase "the first bearer is associated with the first cell group" means that the MAC address corresponding to, used, or mapped by the first bearer is for the first cell group.

[0243] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer is used to transmit PDCP PDUs between the first node and the first cell group.

[0244] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer is used to transmit PDCP SDUs between the first node and the first cell group.

[0245] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer is used to transmit RLC PDUs between the first node and the first cell group.

[0246] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer is used to transmit MAC PDUs between the first node and the first cell group.

[0247] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer is used to transmit data between the first cell groups.

[0248] As an example, the phrase "the first bearer is associated with the first cell group" means that at least SRB1 between the first node and the first cell group uses the first bearer.

[0249] As an example, the phrase "associated with the first bearer and the first cell group" means that at least SRB1 between the first node and the first cell group has a mapping relationship with the first bearer.

[0250] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer is a bearer between the first node and the first relay, and the first relay is a relay between the first node and the first cell group.

[0251] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer is a bearer between the first node and the first relay, and the first relay forwards data between the first node and the first cell group.

[0252] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer is an RLC bearer between the first node and the first relay, and the first relay is a relay between the first node and the first cell group.

[0253] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer is an RLC bearer between the first node and the first relay, and the first relay forwards data between the first node and the first cell group.

[0254] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer is a secondary wireless link between the first node and the first relay, and the first relay is a relay between the first node and the first cell group.

[0255] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer is a secondary wireless link between the first node and the first relay, and the first relay forwards data between the first node and the first cell group.

[0256] As an example, the phrase "the first bearer is associated with the first cell group" means that the first bearer is an RLC bearer between the first node and the first relay, and the first bearer is used to carry at least SRB1, which is an SRB between the first node and the first cell group.

[0257] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer is a bearer between the first node and the first cell group.

[0258] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer terminates at the first node and the first cell group.

[0259] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer terminates at the base station of the first node and the first cell group.

[0260] As an example, the phrase "the second bearer is associated with the first cell group" means that the PDCP entity corresponding to the second bearer is located in the first node and the first cell group, respectively.

[0261] As an example, the phrase "the second bearer is associated with the first cell group" means that the RLC entity corresponding to the second bearer is located in the first node and the first cell group, respectively.

[0262] As an example, the phrase "the second bearer is associated with the first cell group" means that the MAC address corresponding to, used, or mapped by the second bearer is for the first cell group.

[0263] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer is used to transmit PDCP PDUs between the first node and the first cell group.

[0264] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer is used to transmit PDCP SDUs between the first node and the first cell group.

[0265] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer is used to transmit RLC PDUs between the first node and the first cell group.

[0266] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer is used to transmit MAC PDUs between the first node and the first cell group.

[0267] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer is used to transmit data between the first cell groups.

[0268] As an example, the phrase "the second bearer is associated with the first cell group" means that at least SRB1 between the first node and the first cell group uses the second bearer.

[0269] As an example, the phrase "the second bearer is associated with the first cell group" means that at least SRB1 between the first node and the first cell group has a mapping relationship with the second bearer.

[0270] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer is a bearer between the first node and the first relay, and the first relay is a relay between the first node and the first cell group.

[0271] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer is a bearer between the first node and the first relay, and the first relay forwards data between the first node and the first cell group.

[0272] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer is an RLC bearer between the first node and the first relay, and the first relay is a relay between the first node and the first cell group.

[0273] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer is an RLC bearer between the first node and the first relay, and the first relay forwards data between the first node and the first cell group.

[0274] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer is a secondary link radio link between the first node and the first relay, and the first relay is a relay between the first node and the first cell group.

[0275] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer is a secondary wireless link between the first node and the first relay, and the first relay forwards data between the first node and the first cell group.

[0276] As an example, the phrase "the second bearer is associated with the first cell group" means that the second bearer is an RLC bearer between the first node and the first relay, and the second bearer is used to carry at least SRB1, which is an SRB between the first node and the first cell group.

[0277] As an example, the first set of operations includes at least one operation.

[0278] As an example, the RLC entity associated with the target bearer refers to: the target bearer is an RLC bearer, and the RLC entity associated with the target bearer is the RLC entity corresponding to the RLC bearer.

[0279] As an example, the RLC entity associated with the target bearer refers to: the target bearer is a secondary link RLC bearer, and the RLC entity associated with the target bearer is the RLC entity of the PC5 interface corresponding to the secondary link RLC bearer.

[0280] As an example, the RLC entity associated with the target bearer refers to: the target bearer is a radio bearer, and the RLC entity associated with the target bearer is the RLC entity corresponding to the RLC bearer used to carry the target bearer.

[0281] As an example, the RLC entity associated with the target bearer refers to: the target bearer is a radio bearer, and the RLC entity associated with the target bearer is the RLC entity of the PC5 interface corresponding to the secondary link RLC bearer used to carry the target bearer.

[0282] As an example, the RLC entity associated with the target bearer refers to: the target bearer is a physical channel, and the RLC entity associated with the target bearer is the RLC entity that generates the RLC PDU carried by the target bearer.

[0283] As an example, the RLC entity associated with the target bearer refers to: the target bearer is a transport channel, and the RLC entity associated with the target bearer is the RLC entity that generates the RLC PDU carried by the target bearer.

[0284] As an example, the RLC entity associated with the target bearer refers to: the target bearer is a logical channel, and the RLC entity associated with the target bearer is the RLC entity corresponding to the target bearer.

[0285] As an example, the RLC entity associated with the target bearer refers to: the target bearer is a secondary link physical channel, and the RLC entity associated with the target bearer is the RLC entity that generates the RLC PDU carried by the target bearer.

[0286] As an example, the RLC entity associated with the target bearer refers to: the target bearer is a secondary link transmission channel, and the RLC entity associated with the target bearer is the RLC entity that generates the RLC PDU carried by the target bearer.

[0287] As an example, the RLC entity associated with the target bearer refers to: the target bearer is a secondary link logical channel, and the RLC entity associated with the target bearer is the RLC entity corresponding to the target bearer.

[0288] As an example, the RLC entity associated with the target bearer refers to: the target bearer is a radio link for the first cell group, and the RLC entity associated with the target bearer is the RLC entity that generates the RLC PDU transmitted by the target bearer.

[0289] As an example, the RLC entity associated with the target bearer refers to: the target bearer is a secondary link radio link for an L2U2N relay UE, the L2U2N relay UE is an L2 U2N relay UE between the first node and the first cell group, and the RLC entity associated with the target bearer is the RLC entity that generates the RLC PDU transmitted by the target bearer for carrying the PDCP PDU for the first cell group.

[0290] As an example, the RLC entity associated with the target bearer includes the RLC entity of the Uu interface.

[0291] As an example, the RLC entity associated with the target bearer includes the RLC entity of the PC5 interface.

[0292] As an example, the RLC entity associated with the target bearer is an RLC entity that has a mapping relationship with the target bearer.

[0293] As an example, the RLC entity associated with the target bearer is an RLC entity that encapsulates the data on the target bearer.

[0294] As an example, the RLC entity associated with the target bearer is the RLC entity that generates the data carried by the target bearer.

[0295] As an example, in response to the detection of a target bearer failure, the first node records information about the target bearer failure in a first state variable.

[0296] As an example, the first state variable is the state variable of the first node.

[0297] As an example, the name of the first state variable includes "var".

[0298] As an example, the name of the first state variable includes "report".

[0299] As an example, the name of the first state variable includes "relay".

[0300] As an example, the name of the first state variable includes "path".

[0301] As an example, the name of the first state variable includes "relay".

[0302] As an example, the first state variable is VarRLF-Report.

[0303] As an example, the first information is sent via an RRC message.

[0304] As an example, the first information is sent via a MAC CE.

[0305] As an example, when the target bearer is the first type of bearer, the first information is sent via MACCE; when the target bearer is the second type of bearer, the first information is sent via RRC message.

[0306] As an example, the behavior of storing information about the target bearer failure in the first state variable includes: storing the identity of the first cell group.

[0307] As an example, the behavior of storing information about the target bearer failure in the first state variable includes: storing the identity of the PCell of the first cell group.

[0308] As an example, the behavior of storing information about the target bearer failure in the first state variable includes: storing the reason for the target bearer failure.

[0309] As an example, the behavior of storing information about the target bearer failure in the first state variable includes storing the type of the target bearer failure.

[0310] As an example, the behavior of storing information about the failure of the target bearer in the first state variable includes storing whether a second bearer is used.

[0311] As an example, the behavior of storing information about the target bearer failure in the first state variable includes: storing measurement results.

[0312] As an example, the behavior of storing information about the target bearer failure in the first state variable includes: storing the measurement results of the configured measurement object.

[0313] As an example, the behavior of storing information about the target bearer failure in the first state variable includes storing the identity of the L2 U2N relay UE used.

[0314] As an example, the RLC entity associated with the first bearer refers to: the first bearer is an RLC bearer, and the RLC entity associated with the first bearer is the RLC entity corresponding to the RLC bearer.

[0315] As an example, the RLC entity associated with the first bearer refers to: the first bearer is a secondary link RLC bearer, and the RLC entity associated with the first bearer is the RLC entity of the PC5 interface corresponding to the secondary link RLC bearer.

[0316] As an example, the RLC entity associated with the first bearer refers to: the first bearer is a radio bearer, and the RLC entity associated with the first bearer is the RLC entity corresponding to the RLC bearer used to carry the first bearer.

[0317] As an example, the RLC entity associated with the first bearer refers to: the first bearer is a radio bearer, and the RLC entity associated with the first bearer is the RLC entity of the PC5 interface corresponding to the sub-link RLC bearer of the first bearer.

[0318] As an example, the RLC entity associated with the first bearer refers to: the first bearer is a physical channel, and the RLC entity associated with the first bearer is the RLC entity that generates the RLC PDU carried by the first bearer.

[0319] As an example, the RLC entity associated with the first bearer refers to: the first bearer is a transmission channel, and the RLC entity associated with the first bearer is the RLC entity that generates the RLC PDU carried by the first bearer.

[0320] As an example, the RLC entity associated with the first bearer refers to: the first bearer is a logical channel, and the RLC entity associated with the first bearer is the RLC entity corresponding to the first bearer.

[0321] As an example, the RLC entity associated with the first bearer refers to: the first bearer is a secondary link physical channel, and the RLC entity associated with the first bearer is the RLC entity that generates the RLC PDU carried by the first bearer.

[0322] As an example, the RLC entity associated with the first bearer refers to: the first bearer is a secondary link transmission channel, and the RLC entity associated with the first bearer is the RLC entity that generates the RLC PDU carried by the first bearer.

[0323] As an example, the RLC entity associated with the first bearer refers to: the first bearer is a secondary link logical channel, and the RLC entity associated with the first bearer is the RLC entity corresponding to the first bearer.

[0324] As an example, the RLC entity associated with the first bearer refers to: the first bearer is a radio link for the first cell group, and the RLC entity associated with the first bearer is the RLC entity that generates the RLC PDU transmitted by the first bearer.

[0325] As an example, the RLC entity associated with the first bearer refers to: the first bearer is a secondary link radio link for the first relay, the first relay is an L2U2N relay UE between the first node and the first cell group, and the RLC entity associated with the first bearer is an RLC entity that generates the RLC PDU transmitted by the first bearer for carrying the PDCP PDU for the first cell group.

[0326] As an example, the RLC entity associated with the first bearer is an RLC entity that has a mapping relationship with the first bearer.

[0327] As an example, the RLC entity associated with the first bearer is an RLC entity that encapsulates the data on the first bearer.

[0328] As an example, the RLC entity associated with the first bearer is the RLC entity that generates the data carried by the first bearer.

[0329] As an example, the RLC entity associated with the second bearer refers to: the second bearer is an RLC bearer, and the RLC entity associated with the second bearer is the RLC entity corresponding to the RLC bearer.

[0330] As an example, the RLC entity associated with the second bearer refers to: the second bearer is a secondary link RLC bearer, and the RLC entity associated with the second bearer is the RLC entity of the PC5 interface corresponding to the secondary link RLC bearer.

[0331] As an example, the RLC entity associated with the second bearer refers to: the second bearer is a radio bearer, and the RLC entity associated with the second bearer is the RLC entity corresponding to the RLC bearer used to carry the second bearer.

[0332] As an example, the RLC entity associated with the second bearer refers to: the second bearer is a radio bearer, and the RLC entity associated with the second bearer is the RLC entity of the PC5 interface corresponding to the sublink RLC bearer used to carry the second bearer.

[0333] As an example, the RLC entity associated with the second bearer refers to: the second bearer is a physical channel, and the RLC entity associated with the second bearer is the RLC entity that generates the RLC PDU carried by the second bearer.

[0334] As an example, the RLC entity associated with the second bearer refers to: the second bearer is a transmission channel, and the RLC entity associated with the second bearer is the RLC entity that generates the RLC PDU carried by the second bearer.

[0335] As an example, the RLC entity associated with the second bearer refers to: the second bearer is a logical channel, and the RLC entity associated with the second bearer is the RLC entity corresponding to the second bearer.

[0336] As an example, the RLC entity associated with the second bearer refers to: the second bearer is a secondary link physical channel, and the RLC entity associated with the second bearer is the RLC entity that generates the RLC PDU carried by the second bearer.

[0337] As an example, the RLC entity associated with the second bearer refers to: the second bearer is a secondary link transmission channel, and the RLC entity associated with the second bearer is the RLC entity that generates the RLC PDU carried by the second bearer.

[0338] As an example, the RLC entity associated with the second bearer refers to: the second bearer is a secondary link logical channel, and the RLC entity associated with the second bearer is the RLC entity corresponding to the second bearer.

[0339] As an example, the RLC entity associated with the second bearer refers to: the second bearer is a radio link for the first cell group, and the RLC entity associated with the second bearer is the RLC entity that generates the RLC PDU transmitted by the second bearer.

[0340] As an example, the RLC entity associated with the second bearer refers to: the second bearer is a secondary link radio link for an L2U2N relay UE, the L2U2N relay UE is an L2 U2N relay UE between the first node and the first cell group, and the RLC entity associated with the second bearer is the RLC entity that generates the RLC PDU transmitted by the second bearer for carrying the PDCP PDU for the first cell group.

[0341] As an example, the RLC entity associated with the second bearer is an RLC entity that has a mapping relationship with the second bearer.

[0342] As an example, the RLC entity associated with the second bearer is an RLC entity that encapsulates the data on the second bearer.

[0343] As an example, the RLC entity associated with the second bearer is the RLC entity that generates the data carried by the second bearer.

[0344] As one embodiment, the RRC message including the first information is sent using the second bearer.

[0345] As one example, the first bearer is different from the second bearer.

[0346] As an example, the peer RLC entity of the Uu interface is located in the first cell group or the base station corresponding to the first cell.

[0347] As an example, the peer RLC entity of the PC5 interface is located in the first relay.

[0348] As an example, the RLC entity of the PC5 interface is for secondary link communication.

[0349] As an example, the RLC entity of the Uu interface is for non-secondary link communication or primary link communication.

[0350] As an example, the first bearer uses the main link.

[0351] As an example, the second bearer uses a secondary link.

[0352] As an example, the phrase "the first bearer uses the main link" means that the first bearer is the main link.

[0353] As an example, the phrase "the first bearer uses the main link" means that the first bearer is a main link wireless link.

[0354] As an example, the phrase "the first bearer uses the main link" means that the first bearer is a direct path.

[0355] As an example, the phrase "the first bearer uses the main link" means that the first bearer is a bearer between the first node and the first cell group that does not go through any relay.

[0356] As an example, the phrase "the first bearer uses the main link" means that the first bearer corresponds to the Uu interface.

[0357] As an example, the phrase "the first bearer uses the main link" means that the physical channel corresponding to or associated with the first bearer is the physical channel of the Uu interface.

[0358] As an example, the phrase "the first bearer uses the main link" means that the physical channels corresponding to, associated with, or used by the first bearer include PUCCH (physical uplink control channel) and PDCCH (physical downlink control channel).

[0359] As an example, the phrase "the first bearer uses the main link" means that the first bearer is an RLC bearer, and the RLC entity corresponding to the RLC bearer is located in the first node and the first cell group.

[0360] As an example, the phrase "the first bearer uses the main link" means that the protocol entity corresponding to the first bearer is located in the first node and the first cell group.

[0361] As an example, the phrase "the first bearer uses the main link" means that the first bearer is a channel, and the target bearer is the channel between the first node and the first cell group.

[0362] As an example, the phrase "the first bearer uses the main link" means that the channel corresponding to the first bearer is the channel between the first node and the first cell group.

[0363] As an example, the phrase "the second bearer uses a secondary link" means that the second bearer is a secondary link.

[0364] As an example, the phrase "the second bearer uses a secondary link" means that the second bearer is a secondary link wireless link.

[0365] As an example, the phrase "second bearer uses secondary link" means that the second bearer is a non-direct path.

[0366] As an example, the phrase "second bearer uses secondary link" means that the second bearer is a bearer between the first node and the first cell group via an L2 U2N relay UE.

[0367] As an example, the phrase "the second bearer uses a secondary link" means that the second bearer corresponds to the PC5 interface.

[0368] As an example, the phrase "the second bearer uses a secondary link" means that the physical channel corresponding to or associated with the second bearer is the physical channel of the PC5 interface.

[0369] As an example, the phrase "the second bearer uses a secondary link" means that the physical channels corresponding to, associated with, or used by the second bearer include PSSCH (physical sidelink shared channel) and PSCCH (physical sidelink control channel).

[0370] As an example, the phrase "the second bearer uses a secondary link" means that the second bearer is a secondary link RLC bearer, and the RLC entity corresponding to the RLC bearer is located at the first node and the L2 U2N relay UE.

[0371] As an example, the phrase "the second bearer uses a secondary link" means that the protocol entity corresponding to the second bearer is located at the first node and the L2 U2N relay UE.

[0372] As an example, the phrase "second bearer uses secondary link" means that the second bearer is a channel, and the target bearer is the channel between the first node and the L2 U2N relay UE.

[0373] As an example, the phrase "the second bearer uses a secondary link" means that the channel corresponding to the second bearer is the channel between the first node and the L2 U2N relay UE.

[0374] As an example, the phrase "the first relay is an L2 U2N relay UE" means that the first bearer is a UE belonging to the L2 U2N relay UE category.

[0375] As an example, the first node is configured with only one cell group.

[0376] As an example, the first node is configured only with the primary cell group, and not with the secondary cell group.

[0377] As one example, the first bearer is an RLC bearer, and the second bearer is a secondary link RLC bearer.

[0378] As one example, the first set of operations includes resetting the MAC associated with the target bearer.

[0379] As an example, the MAC associated with the target bearer is: a MAC that has a mapping relationship with the target bearer.

[0380] As an example, the MAC associated with the target bearer is: the MAC that carries the data of the target bearer.

[0381] As an example, the MAC associated with the target bearer is: the MAC of the PDU carrying the target bearer.

[0382] As an example, the MAC associated with the target bearer is: the target bearer is a physical channel, and the MAC that generates the MAC PDU carried by the target bearer is the MAC associated with the target bearer.

[0383] As an example, the MAC associated with the target bearer is: the MAC that generates the MACPDU that occupies the target bearer is the MAC associated with the target bearer.

[0384] As an example, the MAC associated with the target bearer is: the MAC of the main link or the Uu interface.

[0385] As an example, the MAC associated with the second bearer is: the MAC of the secondary link or the PC5 interface.

[0386] As an example, the behavior of resetting the MAC associated with the target bearer is to reset the MAC associated with the target bearer.

[0387] As an example, the target bearer is associated with only one MAC address.

[0388] As an example, the MAC associated with the target bearer is different from the MAC associated with the second bearer.

[0389] As an example, the MAC associated with the first bearer is different from the MAC associated with the second bearer.

[0390] As an example, the MAC associated with the first bearer is the same as the MAC associated with the second bearer.

[0391] As an example, the behavior of detecting target bearer failure includes: detecting that the T310 timer has expired.

[0392] As one example, the behavior of detecting target bearer failure includes: detecting that the T310 timer associated with the target bearer has expired.

[0393] As one example, the behavior of detecting target bearer failure includes: detecting that the T312 timer has expired.

[0394] As an example, the behavior of detecting target bearer failure includes: detecting that the T312 timer associated with the target bearer has expired.

[0395] As one example, the behavior of detecting target bearer failure includes: detecting that the T304 timer has expired.

[0396] As one example, the behavior of detecting target bearer failure includes: detecting that the T304 timer associated with the target bearer has expired.

[0397] As one example, the behavior of detecting target bearer failure includes: detecting that a first timer has expired, the first timer being used for path switching.

[0398] As a sub-example of this embodiment, the first timer is started in response to receiving a ReconfigurationwithSYNC for path transformation.

[0399] As one example, the behavior of detecting target bearer failure includes: detecting that a first timer associated with the target bearer has expired, the first timer being used for path switching.

[0400] As a sub-example of this embodiment, the first timer is started in response to receiving a ReconfigurationwithSYNC for path transformation.

[0401] As one example, the behavior of detecting target bearer failure includes: detecting a wireless link failure, wherein the target bearer is the first bearer.

[0402] As one example, the behavior of detecting target bearer failure includes: detecting secondary link radio link failure, wherein the target bearer is the second bearer.

[0403] As an example, the behavior of detecting target bearer failure includes: detecting incompatible secondary link RRC configuration, wherein the target bearer is the second bearer.

[0404] As an example, the behavior of detecting target bearer failure includes: detecting that the T400 timer has expired, wherein the target bearer is the second bearer.

[0405] As an example, the behavior of detecting target bearer failure includes receiving an indication from the MAC regarding reaching the maximum number of HARQ (Hybrid Automatic Repeat Request) DTX (discontinuous transmission) attempts, wherein the target bearer is the second bearer.

[0406] As one example, the behavior of detecting target bearer failure includes: detecting a higher-level indication that the target bearer has been released, is unavailable, or has failed.

[0407] As an example, the behavior of detecting target bearer failure includes: detecting a security failure.

[0408] As one embodiment, the behavior of detecting target bearer failure includes: receiving a first notification, the first notification being used to determine that the target bearer has failed, the target bearer being the second bearer.

[0409] As a sub-implementation of this embodiment, the sender of the first notification is the L2 U2N relay UE of the first node.

[0410] As a sub-implementation of this embodiment, the first notification is transmitted on the secondary link.

[0411] As a sub-implementation of this embodiment, the first notification is NotificationMessageSidelink.

[0412] As a sub-implementation of this embodiment, the first notification indicates that the L2 U2N relay UE of the first node has experienced a radio link failure.

[0413] As a sub-implementation of this embodiment, the first notification indicates that the L2 U2N relay UE of the first node receives an RRCreconfiguration message including ReconfigurationWithSync.

[0414] As a sub-example of this embodiment, the first notification indicates that the L2 U2N relay UE of the first node receives an RRCreconfiguration message including ReconfigurationWithSync related to MCG.

[0415] As a sub-example of this embodiment, the first notification indicates that the L2 U2N relay UE of the first node has undergone cell reselection.

[0416] As one example, the behavior of detecting a target bearer failure includes receiving an indication from a MAC address that there is a problem with random access, wherein the target bearer is the first bearer.

[0417] As one embodiment, the behavior of detecting target bearer failure includes: receiving an indication from an RLC entity that the maximum number of retransmissions has been reached, the target bearer being the first bearer.

[0418] As a sub-example of this embodiment, the RLC entity that has reached the maximum number of retransmissions is indicated to be associated with the target bearer or the RLC entity corresponding to the target bearer.

[0419] As an example, the behavior of detecting target bearer failure includes receiving an indication from a MAC regarding a persistent LBT (listen before talk) failure issue, the target bearer being the first bearer.

[0420] As an example, the first node is not configured with SRB3.

[0421] As an example, when the target bearer is the first bearer, the first set of operations includes initiating RRC reconstruction; when the target bearer is the second bearer, the first set of operations does not include initiating RRC reconstruction.

[0422] As an example, when the target bearer is the first bearer, the first set of operations includes discarding stored RRC message segments; when the target bearer is the second bearer, the first set of operations does not include discarding stored RRC message segments.

[0423] As an example, when the target bearer is the first bearer, the behavior will trigger RRC reconstruction if the target bearer fails; when the target bearer is the second bearer, the behavior will not trigger RRC reconstruction if the target bearer fails.

[0424] As an example, when the target bearer is the first bearer, the first set of operations includes reconstructing the RLC entity associated with the target bearer; when the target bearer is the second bearer, the first set of operations does not include reconstructing the RLC entity associated with the target bearer.

[0425] As an example, the behavior reconstruction associated with the target bearer includes: discarding all RLC SDUs, RLC SDU segments, and RLC PDUs.

[0426] As one embodiment, the behavior reconstruction associated with the target bearer RLC entity includes: stopping and resetting timers for all RLC entities associated with the target bearer.

[0427] As an example, the behavior reconstruction associated with the target bearer RLC entity includes: resetting all uninitialized values ​​of all state variables of the RLC entity associated with the target bearer.

[0428] As an example, the phrase "the second bearer is associated with the first relay" means that the protocol entity corresponding to the second bearer is located at the first node and the first relay.

[0429] As an example, the phrase "the second bearer is associated with the first relay" means that the second bearer is a bearer between the first node and the first relay.

[0430] As an example, the phrase "the second bearer is associated with the first relay" means that the second bearer is a wireless link between the first node and the first relay.

[0431] As an example, the phrase "the second bearer is associated with the first relay" means that the second bearer is a secondary link RLC bearer between the first node and the first relay.

[0432] As an example, the phrase "the second bearer is associated with the first relay" means that the second bearer is a secondary wireless link between the first node and the first relay.

[0433] As an example, the phrase "the second bearer is associated with the first relay" means that the second bearer is a channel between the first node and the first relay.

[0434] As an example, the phrase "the second bearer is associated with the first relay" means that the recipient of the data on the second bearer is the first relay.

[0435] As an example, the phrase "the second bearer is associated with the first relay" means that data on the second bearer is forwarded by the first relay.

[0436] As an example, the phrase "the second bearer is associated with the first relay" means that data on the second bearer occupies resources of the first relay.

[0437] As an example, the phrase "the second bearer is associated with the first relay" means that the second bearer uses a relay, and the relay used is the first relay.

[0438] As an example, the phrase "the second bearer is associated with the first relay" means that the second bearer is a non-direct path, and the relay involved in the non-direct path is the first relay.

[0439] As an example, the first signaling uses the first bearer transmission.

[0440] As one example, the first signaling uses the second bearer for transmission.

[0441] As an example, the first signaling is RRC signaling.

[0442] As one embodiment, the first signaling includes SIB12.

[0443] As one example, the first signaling includes RRCReconfiguration.

[0444] As one example, the first signaling includes ReconfigurationWithSync.

[0445] As one example, the first signaling includes cellgroupconfig.

[0446] As one example, the first signaling includes masterCellGroup.

[0447] As an example, the first signaling does not include secondaryCellGroup.

[0448] As an example, the phrase "the first set of operations includes at least the former of sending an RRC message and receiving an RRC message" means that the first set of operations includes sending an RRC message but does not include receiving an RRC message.

[0449] As an example, the phrase "the first set of operations includes at least the former of sending an RRC message and receiving an RRC message" means that the first set of operations includes both sending and receiving an RRC message.

[0450] As an example, the phrase "the first set of operations includes at least the former of sending an RRC message and receiving an RRC message" means that the first set of operations does not include sending an RRC message but includes receiving an RRC message.

[0451] As an example, the phrase "the first set of operations includes at least the former of sending an RRC message and receiving an RRC message" means that the first set of operations includes sending at least one RRC message.

[0452] As an example, the phrase "the first set of operations includes at least one of cell selection and relay selection" means that the first set of operations includes cell selection but does not include relay selection.

[0453] As an example, the phrase "the first set of operations includes at least one of cell selection and relay selection" means that the first set of operations does not include cell selection but includes relay selection.

[0454] As an example, the phrase "the first set of operations includes at least one of cell selection and relay selection" means that the first set of operations includes both cell selection and relay selection.

[0455] As an example, the phrase "the first set of operations includes at least one of cell selection and relay selection" means that the first set of operations includes either cell selection or relay selection.

[0456] As a sub-implementation of one embodiment, when the first node discovers a suitable cell, it selects the suitable cell; when the first node discovers a suitable relay, it selects the suitable relay; when the first node discovers both a suitable cell and a suitable relay, the first node selects either the suitable cell or the suitable relay according to the implementation.

[0457] As an example, the SRB1 of the first node is associated with both the first bearer and the second bearer.

[0458] As a sub-example of this embodiment, the SRB1 of the first node has a mapping relationship with both the first bearer and the second bearer.

[0459] As a sub-example of this embodiment, the data of SRB1 is transmitted using either the first bearer or the second bearer.

[0460] As a sub-implementation of this embodiment, the data of SRB1 is transmitted using both the first bearer and the second bearer.

[0461] As a sub-implementation of this embodiment, the first bearer is an RLC bearer, the second bearer is a secondary link RLC bearer, and both the first bearer and the second bearer are mapped to the SRB1 of the first node.

[0462] As a sub-implementation of this embodiment, the first bearer is an RLC bearer, the second bearer is a secondary link RLC bearer, the RB carried by the first bearer includes the SRB1 of the first node; the RB carried by the second bearer includes the SRB1 of the first node.

[0463] As an example, the SRB1 of the first node is the SRB between the first node and the first cell group.

[0464] As an example, the SRB1 of the first node is associated only with the first bearer of the first bearer and the second bearer.

[0465] As a sub-example of this embodiment, the SRB1 of the first node is associated with the first bearer, and the SRB1 of the first node is not associated with the second bearer.

[0466] As a sub-implementation of this embodiment, the RB (radio bearer) carried by the first bearer includes SRB1; the RB (radio bearer) carried by the second bearer does not include the SRB1.

[0467] As a sub-implementation of this embodiment, the first bearer is mapped to the SRB1 of the first node; the second bearer is not mapped to the SRB1 of the first node.

[0468] As a sub-example of this embodiment, the data carried by the first bearer includes the data of SRB1; the data carried by the second bearer includes only the data of SRBs other than SRB1.

[0469] As one embodiment, the first set of operations includes: performing at least one operation from the second set of operations only for the former of the first bearer and the second bearer;

[0470] The second set of operations includes suspend, rebuild, and release.

[0471] As a sub-implementation of this embodiment, the first set of operations includes performing the second set of operations on the first bearer.

[0472] As a sub-implementation of this embodiment, the first set of operations does not include performing the second set of operations on the second bearer.

[0473] As a sub-example of this embodiment, the operations performed on the second bearer included in the first set of operations do not include any of the operations in the second set of operations.

[0474] As a sub-implementation of this embodiment, the first node performs a suspension only for the first bearer of the first bearer and the second bearer.

[0475] As a sub-implementation of this embodiment, the first node performs reconstruction only for the first bearer of the first bearer and the second bearer.

[0476] As a sub-implementation of this embodiment, the first node performs release only on the first bearer of the first bearer and the second bearer.

[0477] As an example, in response to the detection of a target bearer failure, the first node suspends the first bearer without suspending, rebuilding, or releasing the second bearer.

[0478] As an example, in response to the detection of a target bearer failure, the first node only rebuilds the first bearer without suspending, rebuilding, or releasing the second bearer.

[0479] As an example, in response to the detection of a target bearer failure, the first node simply releases the first bearer without suspending, rebuilding, or releasing the second bearer.

[0480] As an example, in response to the detection of a target bearer failure, the first node maintains the second bearer.

[0481] As one embodiment, the first signaling includes the configuration of the first bearer.

[0482] As an example, the first signaling indicates the RB mapped by the first bearer.

[0483] As one embodiment, the first signaling includes the logical channel identity corresponding to the first bearer.

[0484] As one embodiment, the first signaling includes the configuration of the RLC entity corresponding to the first bearer.

[0485] As one embodiment, the first signaling includes the configuration of the PDCP entity corresponding to the first bearer.

[0486] As one embodiment, the first signaling includes the configuration of the physical layer corresponding to the first bearer, such as the reference signal used by the physical layer.

[0487] As one embodiment, the first signaling includes the configuration of the channel corresponding to the first bearer.

[0488] As one embodiment, the first signaling includes the configuration of the second bearer.

[0489] As one embodiment, the first signaling indicates the RB mapped by the second bearer.

[0490] As one embodiment, the first signaling includes the logical channel identity corresponding to the second bearer.

[0491] As one embodiment, the first signaling includes the configuration of the RLC entity corresponding to the second bearer.

[0492] As one embodiment, the first signaling includes the configuration of the PDCP entity corresponding to the second bearer.

[0493] As one embodiment, the first signaling includes configuration parameters of the physical layer corresponding to the second bearer, such as reference signals used by the physical layer.

[0494] As one embodiment, the first signaling includes configuration parameters of the channel corresponding to the second bearer.

[0495] As one embodiment, the first signaling includes the identity of the first relay.

[0496] As one embodiment, the first signaling includes a measurement configuration for the first bearer and / or the second bearer.

[0497] Typically, when the target bearer is detected as faulty, only the target bearer is detected as faulty among the first bearer and the second bearer.

[0498] As an example, when the target bearer is detected as failing, only the target bearer among the first bearer and the second bearer is detected as failing, and neither the first bearer nor the second bearer is the target bearer in the process of recovery.

[0499] As an example, when the target bearer is detected as faulty, only the target bearer among the first bearer and the second bearer is detected as faulty, and one of the T304 timers associated with the target bearer is not running in either the first bearer or the second bearer.

[0500] As an example, when the target bearer is detected as faulty, only the target bearer among the first bearer and the second bearer is detected as faulty, and the T304 timer associated with one of the first bearer and the second bearer that is not the target bearer is not running.

[0501] As an example, when the target bearer is detected as faulty, only the target bearer among the first bearer and the second bearer is detected as faulty, and a path-transition related timer associated with one of the first bearer and the second bearer that is not the target bearer is not running.

[0502] As an example, when the target bearer is detected as faulty, only the target bearer is detected as faulty among the first bearer and the second bearer, and neither the first bearer nor the second bearer has an associated path-transition related timer running.

[0503] As an example, when the target bearer is detected as faulty, only the target bearer among the first bearer and the second bearer is detected as faulty, and the path-transition related timer associated with the first bearer and the second bearer that is not the target bearer is no longer running, and the T304 timer is also no longer running.

[0504] As an example, the first node is not configured to be from a cell group (SCG).

[0505] As one embodiment, the first information is sent via one of the target bearers, either the first bearer or the second bearer.

[0506] As one embodiment, the first information includes measurement results for the measurement object of the first node.

[0507] As one example, the first set of operations includes resetting the MAC associated with the target bearer.

[0508] As an example, the first set of operations includes storing information related to the failure of the target bearer in a first state variable.

[0509] As an example, only the first bearer of the first bearer and the second bearer is associated with the DRB.

[0510] As an example, only the first bearer of the first bearer and the second bearer is associated with the MRB.

[0511] As an example, the meaning of the sentence "the first set of operations includes sending an RRC message and receiving an RRC message" includes at least the former: sending an RRCReestablishmentRequest message.

[0512] As an example, the meaning of the sentence "the first set of operations includes sending an RRC message and receiving an RRC message" includes at least the former: sending UEAssistanceInformation.

[0513] As an example, the meaning of the sentence "the first set of operations includes sending an RRC message and receiving an RRC message" includes at least the former: sending SidelinkUEInformation.

[0514] As an example, the meaning of the sentence "the first set of operations includes sending an RRC message and receiving an RRC message" includes at least the former: sending a FailureInformation.

[0515] As an example, the meaning of the sentence "the first set of operations includes sending an RRC message and receiving an RRC message" includes at least the former: sending a UEInformationResponse.

[0516] As an example, the meaning of the sentence "the first set of operations includes sending an RRC message and receiving an RRC message" includes at least the former: sending ulInformationTransfer.

[0517] As an example, the meaning of the sentence "the first set of operations includes sending an RRC message and receiving an RRC message" includes at least the former: sending RRCReconfigurationComplete.

[0518] Example 2

[0519] Example 2 illustrates a schematic diagram of a network architecture according to this application, as shown in the attached diagram. Figure 2 As shown.

[0520] Appendix Figure 2This diagram illustrates the network architecture 200 of 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems. The 5G NR or LTE network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable term. 5GS / EPS 200 may include one or more UE (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet services 230. 5GS / EPS can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown in the figure, 5GS / EPS 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 providing circuit-switched services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol termination to UE 201. gNB 203 can connect to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Services Set (BSS), Extended Services Set (ESS), TRP (Transmitter Receiver Node), or some other suitable term. gNB 203 provides UE 201 with an access point to 5GC / EPC 210. Examples of UE201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term.gNB203 connects to 5GC / EPC210 via the S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF 214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF 213. MME / AMF / SMF 211 is the control node handling signaling between UE201 and 5GC / EPC210. ​​Generally, MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW / UPF 212, which is itself connected to P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF213 connects to Internet service 230. Internet service 230 includes carrier-compliant Internet protocol services, specifically including the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0521] As an example, the first node in this application is UE201.

[0522] As an example, the base station of the first node in this application is gNB203.

[0523] As an example, the radio link from UE201 to NR node B is an uplink.

[0524] As an example, the radio link from NR node B to UE201 is a downlink.

[0525] As an example, the UE201 supports relay transmission.

[0526] As an example, the UE201 includes a mobile phone.

[0527] As an example, the UE201 is a vehicle including a car.

[0528] As one example, the UE201 supports multiple SIM cards.

[0529] As an example, the UE201 supports secondary link transmission.

[0530] As an example, the UE201 supports MBS transmission.

[0531] As an example, the UE201 supports MBMS transmission.

[0532] As an example, the gNB203 is a macrocell base station.

[0533] As an example, the gNB203 is a microcell base station.

[0534] As an example, the gNB203 is a PicoCell base station.

[0535] As one example, the gNB203 is a flight platform device.

[0536] As an example, the gNB203 is a satellite device.

[0537] Example 3

[0538] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for a user plane and a control plane according to this application, as shown in the attached diagram. Figure 3 As shown. Figure 3 This is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300. Figure 3The radio protocol architecture for the control plane 300 between the first node (a satellite or aircraft in the gNB or NTN) and the second node (a satellite or aircraft in the gNB, UE, or NTN), or between two UEs, is illustrated using 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. L1 layer will be referred to as PHY301 in this document. Layer 2 (L2 layer) 305 sits above PHY301 and is responsible for the link between the first and second nodes and between the two UEs via PHY301. L2 layer 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. PDCP sublayer 304 also provides security through encrypted data packets and supports cross-cell mobility between second nodes to the first node. RLC sublayer 303 provides upper-layer packet segmentation and reassembly, retransmission of lost packets, and packet reordering to compensate for out-of-order reception due to HARQ. MAC sublayer 302 provides multiplexing between logical and transport channels. MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell between first nodes. MAC sublayer 302 is also responsible for HARQ operations. RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for acquiring radio resources (i.e., radio bearers) and configuring the lower layer using RRC signaling between the second and first nodes. PC5-S (PC5 Signaling Protocol) sublayer 307 is responsible for processing the signaling protocol of the PC5 interface. The radio protocol architecture of user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for the first and second nodes in user plane 350 is largely the same as the corresponding layers and sublayers in control plane 300 for physical layer 351, PDCP sublayer 354 in L2 layer 355, RLC sublayer 353 in L2 layer 355 and MAC sublayer 352 in L2 layer 355. However, PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for mapping between QoS flows and Data Radio Bearers (DRBs) to support service diversity. Although not illustrated, the first node may have several upper layers above the L2 layer 355. Additionally, it includes a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., a remote UE, server, etc.). For UEs involving relay services, their control plane may also include an adaptation sublayer SRAP (Sidelink Relay Adaptation Protocol) 308, and their user plane may also include an adaptation sublayer SRAP 358. The introduction of the adaptation layer facilitates lower layers, such as the MAC layer and RLC layer, in multiplexing and / or differentiating data from multiple source UEs.

[0539] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the first node in this application.

[0540] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the second node in this application.

[0541] As an example, the first information in this application is generated in RRC306 or MAC302.

[0542] As an example, the first signaling in this application is generated in RRC306.

[0543] As an example, the second signaling in this application is generated in RRC306.

[0544] As an example, the third signaling in this application is generated in RRC306.

[0545] As an example, the fourth signaling in this application is generated in RRC306.

[0546] Example 4

[0547] Example 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of this application, as shown in the attached diagram. Figure 4 As shown. Figure 4 This is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in the access network.

[0548] 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, and optionally may also include a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0549] The second communication device 410 includes a controller / processor 475, a memory 476, a receiver processor 470, a transmitter processor 416, and optionally may also include a multi-antenna receiver processor 472, a multi-antenna transmitter processor 471, a transmitter / receiver 418, and an antenna 420.

[0550] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper-layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements L2 (Layer-2) layer functionality. In the transmission from the second 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 to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmitting 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). Transmit processor 416 performs encoding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, and mapping of signal clusters based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-Phase Shift Keying (M-PSK), M-QAM). Multi-antenna transmit processor 471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based and non-codebook-based precoding, and beamforming processing, generating one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes it with a reference signal (e.g., a pilot) in the time and / or frequency domains, and subsequently uses inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multicarrier symbol stream. Multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmitter processor 471 into an radio frequency stream, which is then provided to different antennas 420.

[0551] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream, which is then provided to the receiver processor 456. The receiver processor 456 and the multi-antenna receiver processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiver processor 458 performs receive analog precoding / beamforming operations on the baseband multicarrier symbol stream from the receiver 454. The receiver processor 456 uses a Fast Fourier Transform (FFT) to convert the baseband multicarrier 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 receiver processor 456, where the reference signal is used for channel estimation, and the data signal is recovered in the multi-antenna receiver processor 458 after multi-antenna detection to recover any spatial stream destined for the first communication device 450. Symbols on each spatial stream are demodulated and recovered in the receive processor 456, generating soft decisions. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper-layer data and control signals transmitted by the second communication device 410 over the physical channel. The upper-layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of Layer 2. The controller / processor 459 may be associated with a memory 460 storing program code and data. The memory 460 may be referred to as computer-readable media. In the transmission from the second communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport and logical channels to recover upper-layer data packets from the core network. The upper-layer data packets are then provided to all protocol layers above Layer 2. Various control signals may also be provided to Layer 3 for Layer 3 processing.

[0552] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, a data source 467 is used to provide upper-layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functions at the second communication device 410 described in the transmission from the second 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 based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmitting lost packets and signaling to the second communication device 410. Transmit processor 468 performs modulation mapping and channel coding processing, while multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming processing. Subsequently, transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding / beamforming operations in multi-antenna transmit processor 457, the stream is provided to different antennas 452 via transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by multi-antenna transmit processor 457 into a radio frequency symbol stream before providing it to antenna 452.

[0553] In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the receiving function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving 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 computer-readable media. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between the transmission and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper-layer data packets from the UE 450. Upper-layer packets from the controller / processor 475 can be provided to the core network.

[0554] As one 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 with the at least one processor, and the first communication device 450 at least: detects a first bearer failure; the first bearer is associated with a first cell group; as a response to the behavior detecting the first bearer failure, executes a first set of operations, the first set of operations relating to the type of the first bearer; as a response to the behavior detecting the first bearer failure, sends a first message; the first message is used to indicate the first bearer failure; as a response to all conditions in a first set of conditions being met, sends a second message; the second message indicates that information is available; wherein, the first cell group is a primary cell group; the first set of conditions includes a first state variable storing available information; the meaning of the sentence "the first set of operations relating to the type of the first bearer" is: when the first bearer is a first type bearer, the first set of operations includes at least one of rebuilding the RLC entity associated with the first bearer and storing information for the first bearer failure in the first state variable; when the first bearer is a second type bearer, the first set of operations includes at least releasing the RLC entity associated with the first bearer.

[0555] As one embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: detecting a first bearer failure; the first bearer being associated with a first cell group; in response to the detection of the first bearer failure, executing a first set of operations, the first set of operations relating to the type of the first bearer; in response to the detection of the first bearer failure, sending first information; the first information being used to indicate the first bearer failure; and in response to all conditions in a first set of conditions being met, sending a second message; the second message indicating that information is available; wherein the first cell group is a primary cell group; the first set of conditions includes a first state variable storing available information; the meaning of the sentence "the first set of operations relating to the type of the first bearer" is: when the first bearer is a first-type bearer, the first set of operations includes at least one of rebuilding the RLC entity associated with the first bearer and storing information regarding the failure of the first bearer in the first state variable; when the first bearer is a second-type bearer, the first set of operations includes at least releasing the RLC entity associated with the first bearer.

[0556] As an example, the first communication device 450 corresponds to the first node in this application.

[0557] As an example, the second communication device 410 corresponds to the second node in this application.

[0558] As an example, the first communication device 450 is a UE.

[0559] As an example, the first communication device 450 is a vehicle-mounted terminal.

[0560] As one embodiment, the second communication device 450 is a relay.

[0561] As one example, the second communication device 450 is a satellite.

[0562] As one example, the second communication device 450 is an aircraft.

[0563] As one embodiment, receiver 454 (including antenna 452), receiver processor 456 and controller / processor 459 are used in this application to receive the first signaling.

[0564] As one embodiment, receiver 454 (including antenna 452), receiver processor 456 and controller / processor 459 are used in this application to receive the first signaling.

[0565] As one embodiment, receiver 454 (including antenna 452), receiver processor 456 and controller / processor 459 are used in this application to receive the second signaling.

[0566] As one embodiment, receiver 454 (including antenna 452), receiver processor 456 and controller / processor 459 are used in this application to receive the third signaling.

[0567] As one embodiment, a transmitter 454 (including an antenna 452), a transmitter processor 468, and a controller / processor 459 are used to transmit the fourth signaling in this application.

[0568] Example 5

[0569] Example 5 illustrates a wireless signal transmission flowchart according to an embodiment of this application, as shown in the attached diagram. Figure 5 As shown. (Attached) Figure 5 In this example, U01 corresponds to the first node of this application. It should be noted that the order in this example does not limit the signal transmission order and the implementation order in this application. The steps in F51 and F52 are optional.

[0570] for First node U01In step S5101, a third signaling is received; in step S5102, a fourth signaling is received; in step S5103, a second signaling is received; in step S5104, a first signaling is received; in step S5105, a target bearer failure is detected; in step S5106, a first message is sent; in step S5107, a random access is initiated; in step S5108, a second message is sent; in step S5109, a third message is sent; and in step S5110, an RRC reconstruction request is sent.

[0571] for Second node U02 In step S5201, a third signaling is sent; in step S5202, a fourth signaling is sent; in step S5203, a second signaling is sent; in step S5204, a first signaling is sent; in step S5205, a first message is received; in step S5206, a second message is received; and in step S5207, a third message is received.

[0572] In Example 5, the first bearer is associated with a first cell group; the first node U01, in response to the behavior detecting the failure of the first bearer, executes a first set of operations, the first set of operations being related to the type of the first bearer;

[0573] The first node U01, in response to the detection of a first bearer failure, sends a first message indicating the first bearer failure; and in response to the satisfaction of all conditions in a first set of conditions, sends a second message indicating that information is available.

[0574] Wherein, the first cell group is the primary cell group; the first condition set includes a first state variable storing available information; the meaning of the sentence "the first operation set is related to the type of the first bearer" is: when the first bearer is a first type bearer, the first operation set includes at least one of rebuilding the RLC entity associated with the first bearer and storing information about the failure of the first bearer in the first state variable; when the first bearer is a second type bearer, the first operation set includes at least releasing the RLC entity associated with the first bearer.

[0575] As an example, the first node U01 is a U2N relay UE.

[0576] As an example, the first node U01 is a U2N remote UE.

[0577] As an example, the first node U01 is an NR ProSe U2N remote UE.

[0578] As an example, the third node U03 is an L2 U2N relay UE.

[0579] As an example, the third node U03 is a neighboring cell of the first node U01.

[0580] As an example, the third node U03 and the second node U02 belong to the same CU.

[0581] As an example, the third node U03 and the second node U02 belong to the same DU.

[0582] As an example, the third node U03 and the second node U02 belong to the same gNB.

[0583] As an example, the third node U03 and the second node U02 are cells with different PCI (physical cell identity).

[0584] As an example, the third node U03 and the second node U02 are cells within the first cell group.

[0585] As an example, the third node U03 is another TRP of the second node U02.

[0586] As an example, the third node U03 and the other beam of the second node U02 correspond to another set of CSI-RS reference signals.

[0587] As one example, the second node U02 is a base station.

[0588] In one embodiment, the second node U02 is the primary cell of the first node U01.

[0589] As an example, the second node U02 is the primary cell group of the first node U01.

[0590] As one embodiment, the second node U02 corresponds to the first cell group of this application or the base station corresponding to the first cell group.

[0591] As an example, the second bearer uses the third node U03.

[0592] As one embodiment, the second bearer is associated with the third node U03.

[0593] As an example, the second bearer is a non-direct path, and the relay involved in the second bearer is the third node U03.

[0594] As one embodiment, the second bearer is or includes a secondary wireless link between the first node U01 and the third node U03.

[0595] As one embodiment, the second bearer is or includes the link between the first node U01 and the third node U03.

[0596] As one embodiment, the second bearer is or includes a direct link between the first node U01 and the third node U03.

[0597] As one embodiment, the second bearer is or includes a direct unicast link between the first node U01 and the third node U03.

[0598] As one embodiment, the second bearer is or includes a secondary link RLC bearer between the first node U01 and the third node U03.

[0599] As one embodiment, the second bearer is or includes the channel between the first node U01 and the third node U03.

[0600] As one embodiment, the second bearer is or includes a wireless link between the second node U02 and the third node U03.

[0601] As one embodiment, the second bearer is or includes an RLC bearer between the second node U02 and the third node U03.

[0602] As one embodiment, the second bearer is or includes the link between the second node U02 and the third node U03.

[0603] As one embodiment, the second bearer is or includes the channel between the second node U02 and the third node U03.

[0604] As one embodiment, the first signaling is sent directly from the second node U02 to the first node U01 without going through a relay.

[0605] As an example, the first signaling is sent from the second node U02 to the first node U01 via forwarding by the third node U03.

[0606] As one embodiment, the first signaling is sent from the second node U02 to the first node U01 by both relay forwarding and direct transmission.

[0607] As an example, the first signaling is RRC signaling.

[0608] As one embodiment, the first signaling includes SIB12.

[0609] As one example, the first signaling includes RRCReconfiguration.

[0610] As one example, the first signaling includes ReconfigurationWithSync.

[0611] As one example, the first signaling includes cellgroupconfig.

[0612] As one example, the first signaling includes masterCellGroup.

[0613] As an example, the first signaling does not include secondaryCellGroup.

[0614] As one embodiment, the first bearer is configured via radioBearerConfig included in the first signaling.

[0615] As one embodiment, the first bearer is configured via the masterCellGroup included in the first signaling.

[0616] As one embodiment, the first bearer is configured via spCellGroup included in the first signaling.

[0617] As one embodiment, the second bearer is configured via the SL-ConfigDedicatedNR included in the first signaling.

[0618] As one embodiment, the second bearer is configured via the sl-L2RemoteConfig included in the first signaling.

[0619] As one embodiment, the first bearer is a bearer between the first node U01 and the second node U02 that does not go through a relay.

[0620] As one embodiment, the second bearer is a bearer relayed between the first node U01 and the second node U02 via the third node U03.

[0621] As one embodiment, the first bearer is an RLC bearer between the first node U01 and the second node U02.

[0622] As one embodiment, the first bearer is the wireless link between the first node U01 and the second node U02.

[0623] As an example, the protocol entity corresponding to the first bearer is located at the first node U01 and the second node U02.

[0624] As one embodiment, the second bearer is a secondary link RLC bearer between the first node U01 and the third node U03 for transmitting data between the first node U01 and the second node U02.

[0625] As one embodiment, the second bearer is a secondary wireless link between the first node U01 and the third node U03.

[0626] As one embodiment, the protocol entity corresponding to the second bearer is located at the first node U01 and the third node U03.

[0627] As one embodiment, both the first bearer and the second bearer are used to process data between the first node U01 and the second node U02.

[0628] As one embodiment, the first signaling is used to configure the first bearer.

[0629] As one embodiment, the first signaling is used to configure the second bearer, and the second signaling is associated with the first cell group.

[0630] As a sub-implementation of this embodiment, the first bearer is the first bearer, and the second bearer is the second bearer.

[0631] As a sub-implementation of this embodiment, the first bearer is the second bearer, and the second bearer is the first bearer.

[0632] As an example, after the first node U01 detects the failure of the first bearer in step S5105 and before sending the first information in step S5106, it sets the main path of the PDCP entity of SRB1 to the second bearer.

[0633] Wherein, the first signaling indicates that SRB1 is associated with both the first bearer and the second bearer and that the main path of the PDCP entity of SRB1 is directed to the first bearer; SRB1 is not configured with PDCP duplication.

[0634] As a sub-implementation of this embodiment, the first information includes a first measurement result.

[0635] As a sub-implementation of this embodiment, the first information is used to indicate whether the target bearer is the second bearer.

[0636] As a sub-example of this embodiment, the SRB1 of the first node U01 is the SRB between the first node U01 and the second node U02.

[0637] As a sub-example of this embodiment, the meaning of the sentence "The first signaling indication SRB1 is associated with both the first bearer and the second bearer" is that both the first bearer and the second bearer are associated with the SRB1.

[0638] As a sub-example of this embodiment, the meaning of the sentence "The first signaling indication SRB1 is associated with both the first bearer and the second bearer" is that both the first bearer and the second bearer have a mapping relationship with the SRB1.

[0639] As a sub-example of this embodiment, the meaning of the sentence "The first signaling indication SRB1 is associated with both the first bearer and the second bearer" is that both the first bearer and the second bearer are used to transmit the data of the SRB1.

[0640] As a sub-implementation of this embodiment, the meaning of the sentence "The first signaling indication SRB1 is associated with both the first bearer and the second bearer" is that the data of the SRB1 of the first node U01 can be transmitted in either the first bearer or the second bearer.

[0641] As a sub-example of this embodiment, the meaning of the sentence "The first signaling indication SRB1 is associated with both the first bearer and the second bearer" is that the data of the SRB1 of the first node U01 is repeatedly transmitted on both the first bearer and the second bearer.

[0642] As a sub-implementation of this embodiment, SRB1 corresponds to one and only one PDCP entity, namely the PDCP entity of SRB1.

[0643] As a sub-example of this embodiment, the meaning of the sentence SRB1 not being configured for PDCP duplication is: the SRB1 of the first node U01 is not configured for PDCP duplication (pdcp-Duplication).

[0644] As a sub-example of this embodiment, the meaning of the sentence SRB1 not being configured for PDCP duplication is: the value of the PDCP duplication (pdcp-Duplication) field configured for SRB1 of the first node U01 is false.

[0645] As a sub-implementation of this embodiment, the first measurement result included in the first information includes the measurement result on the main link.

[0646] As a sub-implementation of this embodiment, the first measurement results included in the first information include measurement results on the secondary link wireless link.

[0647] As a sub-example of this embodiment, the first measurement result included in the first information includes the measurement result for the measurement object configured for the first node U01.

[0648] As a sub-example of this embodiment, the first measurement results included in the first information include RSRP and / or RSRQ for the second node U02.

[0649] As a sub-example of this embodiment, the first measurement result included in the first information includes the RSRP for the third node U03.

[0650] As a sub-implementation of this embodiment, the first measurement results included in the first information include measurement results for neighboring cells.

[0651] As a sub-example of this embodiment, the first measurement result included in the first information includes the measurement result of the beam for the second node U02.

[0652] As a sub-example of this embodiment, the first measurement results included in the first information include measurement results for candidate relays.

[0653] As a sub-implementation of this embodiment, the first information explicitly indicates whether the first bearer is the second bearer.

[0654] As a sub-implementation of this embodiment, the first information implicitly indicates whether the first bearer is the second bearer.

[0655] As a sub-example of this embodiment, the PDCP entity of SRB1 of the first node U01 has at most one primary path.

[0656] As a sub-implementation of this embodiment, the meaning of the sentence "The first signaling indication SRB1 is associated with both the first bearer and the second bearer and the main path of the PDCP entity of SRB1 is for the first bearer" is: the identity of the cell group of the main path of the PDCP entity of the first node U01's SRB1 is the identity of the first cell to which the first bearer is directed.

[0657] As a sub-implementation of this embodiment, the meaning of the sentence "The first signaling indication SRB1 is associated with both the first bearer and the second bearer and the main path of the PDCP entity of SRB1 for the first bearer" is: the identity of the logical channel of the main path of the PDCP entity of the first node U01's SRB1 is the identity of the first bearer.

[0658] As a sub-implementation of this embodiment, the meaning of the sentence "The first signaling indication SRB1 is associated with both the first bearer and the second bearer and the main path of the PDCP entity of SRB1 for the first bearer" is: the identity of the logical channel of the main path of the PDCP entity of the first node U01's SRB1 is the identity of the logical channel associated with or used by the first bearer.

[0659] As a sub-example of this embodiment, the action of setting the main path of the PDCP entity of SRB1 to the second bearer means: setting the identity of the cell group of the main path of the PDCP entity of the first node U01's SRB1 to the identity of the first cell group associated with the second bearer.

[0660] As a sub-example of this embodiment, the action of setting the main path of the PDCP entity of SRB1 to the second bearer means: setting the identity of the logical channel of the main path of the PDCP entity of the first node U01 of SRB1 to the identity of the second bearer.

[0661] As a sub-example of this embodiment, the action of setting the main path of the PDCP entity of SRB1 to the second bearer means: setting the identity of the logical channel of the main path of the PDCP entity of the first node U01 of SRB1 to the identity of the logical channel of the secondary link associated with the second bearer.

[0662] As a sub-example of this embodiment, the action of setting the main path of the PDCP entity of SRB1 to the second bearer means: setting the identity of the logical channel of the main path of the PDCP entity of the first node U01 of SRB1 to the identity of the secondary link logical channel occupied by the second bearer.

[0663] As a sub-example of this embodiment, the action of setting the main path of the PDCP entity of SRB1 for the second bearer means: setting the identity of the node of the main path of the PDCP entity of the first node U01 of SRB1 to the identity of the relay associated with the second bearer.

[0664] As a sub-example of this embodiment, the action of setting the main path of the PDCP entity of SRB1 to the second bearer means: setting the identity of the node of the main path of the PDCP entity of the first node U01 of SRB1 to the identity of the third node U03.

[0665] As one embodiment, the first information is sent using the first bearer.

[0666] As a sub-implementation of this embodiment, the target bearer is the second bearer.

[0667] As a sub-implementation of this embodiment, the first information is at least a portion of the fields in an RRC message for the second node U02.

[0668] As an example, step S5105 detecting target bearer failure includes: detecting a radio link failure in the first bearer.

[0669] As an example, step S5105 detecting target bearer failure includes: detecting a wireless link failure in the wireless link between the first node U01 and the second node U02.

[0670] As an example, step S5105 detecting target bearer failure includes: detecting that timer T310 has expired.

[0671] As an example, step S5105 detecting target bearer failure includes: detecting that timer T312 has expired.

[0672] As an example, step S5105 detecting target bearer failure includes: detecting that timer T304 has expired.

[0673] As an example, step S5105 detecting a target bearer failure includes: detecting a problem in the random access procedure for the second node U02.

[0674] As an example, step S5105 detecting target bearer failure includes: detecting that the first bearer has reached the maximum number of retransmissions in the RLC.

[0675] As an example, step S5105 detecting target bearer failure includes: detecting a persistent LBT failure.

[0676] As an example, in response to step S5105 detecting a target bearer failure, the first node U01 executes the first set of operations, where the target bearer is the first bearer.

[0677] As a sub-implementation of this embodiment, the first operation includes reconstructing the RLC entity associated with the first bearer, but does not include storing information about the failure of the first bearer in the first state variable.

[0678] As a sub-implementation of this embodiment, the first operation includes storing information about the failure of the first bearer in the first state variable, but does not include rebuilding the RLC entity associated with the first bearer.

[0679] As a sub-implementation of this embodiment, the first operation includes storing information about the failure of the first bearer in the first state variable, including reconstructing the RLC entity associated with the first bearer.

[0680] As one embodiment, the third signaling is used to indicate a path transition for the target bearer;

[0681] The first set of operations includes: executing the third signaling; the reception of the third signaling occurs before the action detects a target bearer failure.

[0682] As a sub-implementation of this embodiment, the third signaling includes sl-PathSwitchConfig.

[0683] As a sub-implementation of this embodiment, the third signaling is an RRC message.

[0684] As a sub-implementation of this embodiment, the third signaling is or includes an RRCReconfiguration message.

[0685] As a sub-implementation of this embodiment, the third signaling indicates a transition from an indirect path to another indirect path.

[0686] As a sub-implementation of this embodiment, the third signaling indication is changed from a non-direct path to a direct path.

[0687] As a sub-implementation of this embodiment, the target bearer is the first bearer, and the third signaling is used to indicate a transition from a direct path to a non-direct path.

[0688] As a sub-implementation of this embodiment, the target bearer is the second bearer, and the third signaling is used to indicate a transition from a direct path to a non-direct path.

[0689] As a sub-implementation of this embodiment, the target bearer is the first bearer, and the third signaling is used to indicate a transition from a non-direct path to a direct path.

[0690] As a sub-implementation of this embodiment, the third signaling is executed in response to the fulfillment of the first execution condition, the first execution condition being associated with the third signaling.

[0691] As a sub-implementation of this embodiment, in response to the first set of execution conditions being satisfied, the first node U01 performs relay selection and the selected relay is the first relay.

[0692] As a sub-implementation of this embodiment, in response to the first set of execution conditions being satisfied, the first node U01 performs relay selection and the selected relay is the second relay.

[0693] As a sub-implementation of this embodiment, in response to the first set of execution conditions being satisfied, the first node U01 performs relay selection and the selected relay is an L2 U2N relay UE other than the first relay.

[0694] As a sub-example of this embodiment, the third signaling instructs the first bearer execution path to switch to the second bearer.

[0695] As a sub-example of this embodiment, the third signaling instructs the first bearer to switch its execution path to a relay-related bearer other than the second bearer.

[0696] As a sub-example of this embodiment, the third signaling instructs the first bearer execution path to switch to a non-direct path other than the second bearer.

[0697] As a sub-implementation of this embodiment, the third signaling is not executed immediately after being received, but is executed only after the first execution condition is met.

[0698] As an example, the first node U01 receives a fourth signaling in step S5102, the fourth signaling being used to configure a fourth bearer; the action of configuring the fourth bearer includes setting the fourth bearer to an inactive state;

[0699] Wherein, the first set of operations includes: activating the fourth bearer; the first set of operations includes at least one of: suspending the second bearer, deactivating the second bearer, and releasing the second bearer; the target bearer is the second bearer.

[0700] As a sub-example of this embodiment, the meaning of the sentence describing the behavior configuration of the fourth bearer including setting the fourth bearer to an inactive state is: the fourth signaling explicitly indicates that the fourth bearer is set to an inactive state.

[0701] As a sub-example of this embodiment, the meaning of the sentence describing the behavior configuration of the fourth bearer including setting the fourth bearer to an inactive state is: the fourth signaling implicitly indicates that the fourth bearer is set to an inactive state, that is, it does not indicate that the fourth bearer is set to an active state.

[0702] As a sub-example of this embodiment, the meaning of the sentence describing the behavior configuration of the fourth bearer including setting the fourth bearer to an inactive state is: the reception of the fourth signaling triggers the fourth bearer to be set to an active state.

[0703] As a sub-example of this embodiment, the meaning of the sentence describing the behavior configuration of the fourth bearer including setting the fourth bearer to an inactive state is: the reception of the fourth signaling triggers the fourth bearer to be set to an active state.

[0704] As a sub-example of this embodiment, the meaning of the sentence describing the behavior of configuring the fourth bearer, including setting the fourth bearer to an inactive state, is: after receiving the fourth signaling, the first node U01 configures the fourth bearer according to the fourth signaling and sets the fourth bearer to an active state.

[0705] As a sub-implementation of this embodiment, the fourth signaling is RRC signaling.

[0706] As a sub-implementation of this embodiment, the fourth signaling is or includes RRCReconfiguration.

[0707] As a sub-implementation of this embodiment, the fourth signaling indicates at least one candidate relay.

[0708] As a sub-implementation of this embodiment, the fourth signaling indicates the identity of at least one candidate L2 U2N relay UE.

[0709] As a sub-implementation of this embodiment, the fourth bearer is a non-direct path.

[0710] As a sub-example of this embodiment, the fourth bearer is associated with a candidate relay.

[0711] As a sub-implementation of this embodiment, the fourth bearer is associated with the first cell group.

[0712] As a sub-example of this embodiment, the fourth bearer is used to transmit PDCP PDUs between the first node U01 and the second node U02.

[0713] As a sub-implementation of this embodiment, the fourth bearer is used to carry the radio bearer between the first node U01 and the first cell group.

[0714] As a sub-implementation of this embodiment, the fourth bearer is used to carry the first radio bearer of the first node U01 for the first cell group; the second bearer is used to carry the first radio bearer of the first node U01 for the first cell group, and the first radio bearer is an RB.

[0715] As a sub-implementation of this embodiment, the relay associated with the fourth bearer is the third relay, and the third relay is not the first relay.

[0716] As a sub-example of this embodiment, the relay associated with the fourth bearer is a node other than the third node U03.

[0717] As a sub-implementation of this embodiment, the fourth bearer includes a wireless link between the first node U01 and a candidate relay.

[0718] As a sub-implementation of this embodiment, the fourth bearer includes a secondary wireless link between the first node U01 and a candidate relay.

[0719] As a sub-example of this embodiment, the fourth bearer includes a secondary link RLC bearer between the first node U01 and a candidate relay.

[0720] As a sub-implementation of this embodiment, the fourth bearer includes a secondary wireless link between the first node U01 and a candidate relay and a wireless link between the candidate relay and the first cell group.

[0721] As a sub-implementation of this embodiment, the fourth bearer includes the secondary link RLC bearer between the first node U01 and a candidate relay and the RLC bearer between the candidate relay and the first cell group.

[0722] As a sub-example of this embodiment, the fourth bearer includes the channel between the first node U01 and a candidate relay.

[0723] As a sub-example of this embodiment, the first node U01 only sends data on the bearer in the active state.

[0724] As a sub-example of this embodiment, the first node U01 only sends data on the fourth bearer in the active state.

[0725] As a sub-example of this embodiment, the first node U01 only sends data on the second bearer in the active state.

[0726] As a sub-example of this embodiment, the action of deactivating the second bearer means setting the second bearer to an inactive state.

[0727] As an example, the first node U01 receives the second signaling in step S5103, and in response to receiving the second signaling, starts the first timer;

[0728] Specifically, when the action detects a target bearer failure and is executed, the first timer is in a running state; the second signaling includes a first field, the first field being reconfigurationWithSync, which is used to indicate path translation for the second bearer, the target bearer being the first bearer; the first timer is a timer other than T304.

[0729] As a sub-implementation of this embodiment, the first timer is T404.

[0730] As a sub-implementation of this embodiment, the first timer is one of {T304a, T304b, T304c, T304r}.

[0731] As a sub-implementation of this embodiment, the name of the first timer includes r or relay.

[0732] As a sub-example of this embodiment, the phrase "when the action is executed after the target bearer is detected to be in failure" means: when the target bearer is detected to be in failure.

[0733] As a sub-implementation of this embodiment, the second signaling includes sl-PathSwitchConfig.

[0734] As a sub-example of this embodiment, the stopping condition of the first timer is receiving a specific signal on the secondary link.

[0735] As an example, step S5105 is executed after step S5104.

[0736] As one embodiment, the first set of operations includes: releasing the second bearer and suspending the SRB1 associated with the target bearer; the first set of operations includes: performing either cell selection or relay selection;

[0737] The first set of operations includes sending an RRC reconstruction request message.

[0738] As a sub-implementation of this embodiment, step S5110 belongs to the first operation set.

[0739] As a sub-example of this embodiment, the phrase "perform cell selection" and "relay selection" means: perform cell selection but not relay selection.

[0740] As a sub-example of this embodiment, the phrase "perform cell selection" and "perform relay selection" means: do not perform cell selection, but perform relay selection.

[0741] As a sub-example of this embodiment, the phrase "perform cell selection" and "relay selection" both mean that cell selection and relay selection are both performed.

[0742] As a sub-implementation of this embodiment, the RRC Reestablishment Request message is or includes an RRCReestablishmentRequest message.

[0743] As a sub-example of this embodiment, the first node U01 determines whether to perform cell selection or relay selection, or both, based on its internal algorithm.

[0744] As a sub-implementation of this embodiment, the first set of operations includes initiating a random access procedure.

[0745] As a sub-implementation of this embodiment, the first set of operations does not include initiating a random access procedure.

[0746] As a sub-example of this embodiment, the first node decides whether to initiate a random access procedure based on whether the synchronization requirements are met.

[0747] As one embodiment, whether the first set of operations includes initiating random access depends on whether the target bearer is the first bearer or the second bearer; when the target bearer is the first bearer, the first set of operations includes initiating a random access procedure; when the target bearer is the second bearer, the first set of operations does not include initiating a random access procedure.

[0748] As a sub-implementation of this embodiment, the behavior initiates random access for the second node U02.

[0749] As a sub-example of this embodiment, the behavior initiates random access to nodes other than the second node U02.

[0750] As a sub-example of this embodiment, the behavior initiates random access for cells other than the second node U02.

[0751] As an example, step S5110 belongs to the RRC reconstruction process.

[0752] As an example, the RRC reconstruction process includes initiating an RRC reconstruction request for the second node U02.

[0753] As an example, the RRC reconstruction process includes sending an RRC reconstruction request to nodes other than the second node U02.

[0754] As an example, the RRC reconstruction process includes forwarding the RRC reconstruction request through the third node U03.

[0755] As an example, the RLC entity associated with the first bearer is the RLC entity of the Uu interface.

[0756] As a sub-example of this embodiment, the RLC entity of the Uu interface corresponds to RLC303 in embodiment 3.

[0757] As a sub-example of this embodiment, the RLC entity of the Uu interface corresponds to RLC353 in embodiment 3.

[0758] As a sub-implementation of this embodiment, the RLC entity of the Uu interface is the Uu-RLC entity in embodiment 7(c).

[0759] As an example, the RLC entity associated with the second bearer is the RLC entity of the PC5 interface.

[0760] As a sub-example of this embodiment, the RLC entity of the PC5 interface is the PC5-RLC entity in (a) or (b) of embodiment 7.

[0761] As one embodiment, the first set of operations includes: storing information about the failure of the target bearer in a first state variable.

[0762] As a sub-example of this embodiment, the behavior of storing information about the target bearer failure in the first state variable includes: storing the identity of the first cell group.

[0763] As a sub-example of this embodiment, the behavior of storing information about the target bearer failure in the first state variable includes: storing the identity of the PCell of the first cell group.

[0764] As a sub-example of this embodiment, the behavior of storing information about the target bearer failure in the first state variable includes: storing the reason for the target bearer failure.

[0765] As a sub-example of this embodiment, the behavior of storing information about the target bearer failure in the first state variable includes: storing the type of the target bearer failure.

[0766] As a sub-example of this embodiment, the behavior of storing information about the failure of the target bearer in the first state variable includes: storing whether a second type of bearer is used.

[0767] As a sub-example of this embodiment, the behavior of storing information about the target bearer failure in the first state variable includes: storing measurement results.

[0768] As a sub-example of this embodiment, the behavior of storing information about the target bearer failure in the first state variable includes: storing the measurement results of the configured measurement object.

[0769] As a sub-example of this embodiment, the behavior of storing information about the target bearer failure in the first state variable includes: storing the identity of the L2 U2N relay UE used.

[0770] As a sub-implementation of this embodiment, the target bearer is the first bearer.

[0771] As a sub-implementation of this embodiment, the target bearer is the second bearer.

[0772] As an example, the second message is an RRC message.

[0773] As one example, the second message is used to indicate that an operation at the RRC layer has been completed.

[0774] As one example, the second message includes RRCReconfigurationComplete.

[0775] As an example, the second message includes RRCResumeComplete.

[0776] As an example, the second message includes RRCSetupComplete.

[0777] As one example, the second message includes RRCReestablishmentComplete.

[0778] As one example, the second message indicates that information is available.

[0779] As an example, the phrase "the second message indicates that there is available information" means that the first node has or stores available information.

[0780] As an example, the phrase "the second message indicates that information is available" means that the available information includes information about the target bearer failure.

[0781] As an example, the phrase "the second message indicates that information is available" means that the available information includes information about the target class bearer failure.

[0782] As an example, the phrase "the second message indicates that information is available" means that the available information includes wireless link failure information.

[0783] As an example, the phrase "the second message indicates that information is available" means that the available information includes cell handover failure information.

[0784] As an example, the phrase "the second message indicates that information is available" means that the available information includes path conversion failure information.

[0785] As an example, the phrase "the second message indicates that information is available" means that the second message includes an enumerated field that takes the value true to indicate that information is available.

[0786] As an example, the phrase "the second message indicates that information is available" means that the second message includes a field with a value of true indicating that information is available.

[0787] As an example, the phrase "the second message indicates that information is available" means that the UE-MeasurementsAvailable field of the second message indicates that information is available.

[0788] As an example, the phrase "the second message indicates that information is available" means that the rlf-InfoAvailable field of the UE-MeasurementsAvailable field of the second message indicates that information is available.

[0789] As an example, the phrase "the second message indicates that information is available" means that there is available information related to the failure of the target bearer.

[0790] As an example, the phrase "the second message indicates that information is available" means that there is available information related to the first bearer failure.

[0791] As an example, the phrase "the second message indicates that information is available" means that there is available information related to the failure of the second bearer.

[0792] As an example, the phrase "the second message indicates that information is available" means that the information stored in the first state variable related to the failure of the target bearer is the available information.

[0793] As an example, the phrase "the second message indicates that information is available" means that the information stored in the first state variable related to the first bearer failure is the available information.

[0794] As an example, the third message is an RRC message.

[0795] As an example, the third message includes UEAssistanceInformation.

[0796] As an example, the third message includes SidelinkUEInformation.

[0797] As an example, the third message includes FailureInformation.

[0798] As an example, the third message includes UEInformationResponse.

[0799] As an example, the third message includes ulInformationTransfer.

[0800] As an example, the third message is or includes RRCReconfigurationComplete.

[0801] As a sub-example of this embodiment, the third message is used to indicate that the path conversion is complete.

[0802] As a sub-example of this embodiment, the third message is used to indicate that cell handover is complete.

[0803] As an example, the third message includes information about the target bearer failure.

[0804] As an example, the third message includes rlf-report.

[0805] As an example, the first state variable is used to generate the third message.

[0806] As an example, the third message uses the first bearer.

[0807] As an example, the third message uses the second bearer.

[0808] As an example, the third message uses the first bearer.

[0809] As an example, the third message uses the second bearer.

[0810] As an example, the third message does not use the first bearer or the second bearer.

[0811] As an example, in response to the execution of the third signaling, the first node U01 sends the third message.

[0812] As an example, in response to the execution of the fourth signaling, the first node U01 sends the third message.

[0813] As an example, in response to activating the fourth bearer, the first node U01 sends the third message.

[0814] As an example, in response to the completion of the path transition, the first node U01 sends the third message.

[0815] As an example, in response to the recovery of the target path, the first node U01 sends the third message.

[0816] As one embodiment, the first bearer and the second bearer are, respectively, MRB and DRB.

[0817] As one example, the first bearer is for broadcast or multicast services.

[0818] As an example, the first bearer is the PTM branch of the MRB.

[0819] As one example, the second bearer is for broadcast or multicast services.

[0820] As one example, the second bearer is for unicast services.

[0821] As one embodiment, the second bearer is a PTP branch for broadcast or multicast services.

[0822] Example 6

[0823] Example 6 illustrates a wireless signal transmission flowchart according to an embodiment of this application, as shown in the attached diagram. Figure 6 As shown. (Attached) Figure 6 In this example, U11 corresponds to the first node of this application. It should be noted that the order in this example does not limit the signal transmission order and implementation order in this application. Embodiment 6 is based on Embodiment 5. Parts of Embodiment 6 that are needed but not described can be referred to Embodiment 5.

[0824] for First node U11 In step S6101, the first sub-signaling is received; in step S6102, the second sub-signaling is received; in step S6103, the third sub-signaling is received; and in step S6104, the target bearer failure is detected.

[0825] for Second node U12 In step S6201, the first sub-signaling is sent; in step S6201, the second sub-signaling is sent; in step S6203, the third sub-signaling is sent.

[0826] As an example, the first node U11 is a U2N relay UE.

[0827] As an example, the first node U11 is a U2N remote UE.

[0828] As an example, the first node U11 is an NR ProSe U2N remote UE.

[0829] As an example, the third node U13 is an L2 U2N relay UE.

[0830] As an example, the third node U13 is a neighboring cell of the first node U11.

[0831] As an example, the third node U13 and the second node U12 belong to the same CU.

[0832] As an example, the third node U13 and the second node U12 belong to the same DU.

[0833] As an example, the third node U13 and the second node U12 belong to the same gNB.

[0834] As an example, the third node U13 and the second node U12 are cells with different PCI (physical cell identity).

[0835] As an example, the third node U13 and the second node U12 are cells within the first cell group.

[0836] As an example, the third node U13 is another TRP of the second node U12.

[0837] As an example, the third node U13 and the other beam of the second node U12 correspond to another set of CSI-RS reference signals.

[0838] As one example, the second node U12 is a base station.

[0839] In one embodiment, the second node U12 is the primary cell of the first node U11.

[0840] As an example, the second node U12 is the primary cell group of the first node U11.

[0841] As one embodiment, the second node U12 corresponds to the first cell group of this application or the base station corresponding to the first cell group.

[0842] As an example, the third node U13 is the first relay.

[0843] As an example, the second bearer uses the third node U13.

[0844] As one embodiment, the second bearer is associated with the third node U13.

[0845] As an example, the second bearer is a non-direct path, and the relay involved in the second bearer is the third node U13.

[0846] As one embodiment, the second bearer is or includes a secondary wireless link between the first node U11 and the third node U13.

[0847] As one embodiment, the second bearer is or includes the link between the first node U11 and the third node U13.

[0848] As one embodiment, the second bearer is or includes a direct link between the first node U11 and the third node U13.

[0849] As one embodiment, the second bearer is or includes a direct unicast link between the first node U11 and the third node U13.

[0850] As one embodiment, the second bearer is or includes a secondary link RLC bearer between the first node U11 and the third node U13.

[0851] As one embodiment, the second bearer is or includes the channel between the first node U11 and the third node U13.

[0852] As one embodiment, the second bearer is or includes a wireless link between the second node U12 and the third node U13.

[0853] As one embodiment, the second bearer is or includes an RLC bearer between the second node U12 and the third node U13.

[0854] As one embodiment, the second bearer is or includes the link between the second node U12 and the third node U13.

[0855] As one embodiment, the second bearer is or includes the channel between the second node U12 and the third node U13.

[0856] As one embodiment, the first signaling includes the first sub-signaling, the second sub-signaling, and the third sub-signaling.

[0857] As an example, the first sub-signaling, the second sub-signaling, and the third sub-signaling are different domains included in the first signaling.

[0858] As an example, at least one of the first sub-signaling, the second sub-signaling, and the third sub-signaling is a different domain included in the first signaling.

[0859] As an example, at least one of the first sub-signaling, the second sub-signaling, and the third sub-signaling is an RRC message.

[0860] As an example, the first sub-signaling, the second sub-signaling, and the third sub-signaling are sent simultaneously.

[0861] As a sub-example of this embodiment, the phrase "sent simultaneously" means that it is sent in the same RRC message.

[0862] As a sub-example of this embodiment, the phrase "sent simultaneously" means "sent in the same MAC PDU".

[0863] As an example, the first sub-signaling, the second sub-signaling, and the third sub-signaling are not sent simultaneously.

[0864] As a sub-implementation of this embodiment, the meaning of the phrase not being sent simultaneously is: the first sub-signaling, the second sub-signaling, and the third sub-signaling are sent through at least two RRC messages.

[0865] As a sub-implementation of this embodiment, the meaning of the phrase not being sent simultaneously is: the first sub-signaling, the second sub-signaling and the third sub-signaling are sent through at least two MAC PDUs.

[0866] As one embodiment, the first sub-signaling and the second sub-signaling belong to the same RRC message, while the first sub-signaling and the third sub-signaling belong to different RRC messages.

[0867] As one embodiment, the first signaling includes multiple RRC messages.

[0868] As an example, step S6104 follows step S6103.

[0869] As an example, step S6104 follows step S6102.

[0870] As an example, step S6104 follows step S6101.

[0871] As one embodiment, the first signaling includes a first sub-signaling, a second sub-signaling, and a third sub-signaling. The first sub-signaling is used to configure the first bearer, the third sub-signaling is used to configure the third bearer, and the second sub-signaling is used to configure the second bearer. The third bearer is associated with a second relay, which is an L2 U2N relay UE. The first relay is different from the second relay.

[0872] As a sub-implementation of this embodiment, the third bearer is a non-direct path.

[0873] As a sub-implementation of this embodiment, the third bearer uses the second relay.

[0874] As a sub-implementation of this embodiment, the first relay is the third node U13.

[0875] As a sub-example of this embodiment, the second relay is a node other than the third node U13.

[0876] As a sub-implementation of this embodiment, the data carried by the third bearer is forwarded through the second relay.

[0877] As a sub-implementation of this embodiment, the third bearer is or includes a secondary wireless link between the first node U11 and the second relay.

[0878] As a sub-implementation of this embodiment, the third bearer is or includes the secondary link RLC bearer between the first node U11 and the second relay.

[0879] As a sub-implementation of this embodiment, the third bearer is or includes a secondary link channel between the first node U11 and the second relay.

[0880] As a sub-implementation of this embodiment, the third bearer is or includes a direct link between the first node U11 and the second relay.

[0881] As a sub-implementation of this embodiment, the third bearer is or includes the wireless link between the second relay and the first cell group.

[0882] As a sub-implementation of this embodiment, the third bearer is or includes an RLC bearer between the second relay and the first cell group.

[0883] As a sub-implementation of this embodiment, the third bearer is or includes the channel between the second relay and the first cell group.

[0884] As a sub-implementation of this embodiment, the first sub-signaling includes the configuration parameters of the RLC entity corresponding to the first bearer.

[0885] As a sub-implementation of this embodiment, the first sub-signaling includes the configuration parameters of the PDCP entity corresponding to the first bearer.

[0886] As a sub-implementation of this embodiment, the first sub-signaling includes the configuration parameters of the MAC corresponding to the first bearer.

[0887] As a sub-implementation of this embodiment, the first sub-signaling indicates the resources occupied by the first bearer.

[0888] As a sub-implementation of this embodiment, the first sub-signaling includes the configuration parameters of the sub-link RLC entity corresponding to the second bearer.

[0889] As a sub-implementation of this embodiment, the first sub-signaling indicates the radio link associated with the second bearer.

[0890] As a sub-implementation of this embodiment, the first sub-signaling includes the configuration parameters of the MAC corresponding to the second bearer.

[0891] As a sub-implementation of this embodiment, the first sub-signaling includes the configuration parameters of the SRAP layer corresponding to the second bearer.

[0892] As a sub-implementation of this embodiment, the first sub-signaling includes the identity of the first relay associated with the second bearer.

[0893] As a sub-implementation of this embodiment, the first sub-signaling includes the configuration parameters of the sub-link RLC entity corresponding to the third bearer.

[0894] As a sub-implementation of this embodiment, the first sub-signaling indicates the radio link associated with the third bearer.

[0895] As a sub-implementation of this embodiment, the first sub-signaling includes the configuration parameters of the MAC corresponding to the third bearer.

[0896] As a sub-implementation of this embodiment, the first sub-signaling includes the configuration parameters of the SRAP layer corresponding to the third bearer.

[0897] As a sub-implementation of this embodiment, the first sub-signaling includes the identity of the first relay associated with the third bearer.

[0898] As a sub-implementation of this embodiment, the target bearer is the second bearer.

[0899] As an example, the first node U11, in response to receiving the second sub-signaling, starts the first timer, suspends the third bearer, and configures the second bearer.

[0900] As a sub-implementation of this embodiment, the target bearer is the second bearer.

[0901] As one example, the third bearer is associated with the first cell group.

[0902] As a sub-implementation of this embodiment, the target bearer is the second bearer.

[0903] As a sub-implementation of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer is a bearer between the first node and the first cell group.

[0904] As a sub-example of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer terminates at the first node and the first cell group.

[0905] As a sub-example of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer terminates at the first node and the base station of the first cell group.

[0906] As a sub-example of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the PDCP entity corresponding to the third bearer is located in the first node and the first cell group, respectively.

[0907] As a sub-example of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the RLC entity corresponding to the third bearer is located in the first node and the first cell group, respectively.

[0908] As a sub-example of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the MAC address corresponding to, used, or mapped by the third bearer is for the first cell group.

[0909] As a sub-example of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer is used to transmit PDCP PDUs between the first node and the first cell group.

[0910] As a sub-example of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer is used to transmit PDCP SDUs between the first node and the first cell group.

[0911] As a sub-example of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer is used to transmit RLC PDUs between the first node and the first cell group.

[0912] As a sub-example of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer is used to transmit MAC PDUs between the first node and the first cell group.

[0913] As a sub-example of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer is used to transmit data between the first cell groups.

[0914] As a sub-example of this embodiment, the phrase "the third bearer is associated with the first cell group" means that at least SRB1 between the first node and the first cell group uses the third bearer.

[0915] As a sub-example of this embodiment, the phrase "the third bearer is associated with the first cell group" means that at least SRB1 between the first node and the first cell group has a mapping relationship with the third bearer.

[0916] As a sub-implementation of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer is a bearer between the first node and the first relay, and the first relay is a relay between the first node and the first cell group.

[0917] As a sub-implementation of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer is a bearer between the first node and the first relay, and the first relay forwards data between the first node and the first cell group.

[0918] As a sub-implementation of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer is an RLC bearer between the first node and the first relay, and the first relay is a relay between the first node and the first cell group.

[0919] As a sub-implementation of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer is an RLC bearer between the first node and the first relay, and the first relay forwards data between the first node and the first cell group.

[0920] As a sub-implementation of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer is a secondary link radio link between the first node and the first relay, and the first relay is a relay between the first node and the first cell group.

[0921] As a sub-example of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the first cell group is the anchor point of the first node U11 or the anchor point of the SRB1 of the first node U11.

[0922] As a sub-implementation of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer is a secondary wireless link between the first node and the first relay, and the first relay forwards data between the first node and the first cell group.

[0923] As a sub-implementation of this embodiment, the phrase "the third bearer is associated with the first cell group" means that the third bearer is an RLC bearer between the first node and the first relay, and the third bearer is used to carry at least SRB1, which is an SRB between the first node and the first cell group.

[0924] As one embodiment, the second sub-signaling includes a first field, the first field being ReconfigurationWithSync, which is used to indicate path translation for the third bearer, and the first timer being a timer other than T304; the behavior of detecting target bearer failure includes detecting that the first timer has expired.

[0925] As a sub-example of this embodiment, the condition for the target bearer to fail includes the expiration of the first timer.

[0926] As one embodiment, the second sub-signaling instructs the third bearer to be converted to the second bearer.

[0927] As one example, the second sub-signaling indicates that the third bearer should be stopped and the second bearer should be started.

[0928] As an example, the path transformation of the phrase for the third bearer includes: activating the third bearer.

[0929] As one embodiment, the path transformation of the phrase for the third bearer includes: suspending the second bearer.

[0930] As an example, the path transition for the phrase with respect to the third bearer includes: releasing the second bearer.

[0931] As an example, the path transformation of the phrase for the third bearer includes: reconstructing the second bearer.

[0932] As one embodiment, the first set of operations includes: activating the third bearer; the first set of operations includes one of suspending the second bearer, releasing the second bearer, and reconstructing the second bearer.

[0933] Example 7

[0934] Example 7 illustrates a schematic diagram of a relay communication protocol stack according to an embodiment of this application, as shown in the attached diagram. Figure 7 As shown.

[0935] Appendix Figure 7 Divide into three subgraphs: (a), (b), and (c).

[0936] Appendix Figure 7 The protocol stack shown is applicable to L2 U2N relay communication. Example 7 is based on Example 3.

[0937] Appendix Figure 7 (a) in the text corresponds to the user plane protocol stack in L2 U2N relay communication; Appendix Figure 7 (b) in the text corresponds to the control plane protocol stack in L2 U2N relay communication.

[0938] As an example, the first relay is the relay when the first node uses a non-direct path.

[0939] As an example, the first relay is an L2 U2N relay UE between the first node and the first cell group.

[0940] As an example, Appendix Figure 7 The gNB in ​​the first cell group is the gNB in ​​the first cell group.

[0941] As an example, Appendix Figure 7 The gNB in ​​the text is the gNB corresponding to the first cell group.

[0942] As an example, Appendix Figure 7 The gNB in ​​the text refers to the gNB corresponding to the PCell of the first cell group.

[0943] As an example, Appendix Figure 7 The gNB in ​​the first cell group belongs to the first cell group.

[0944] In Embodiment 7, the PC5 interface is the interface between the first node and the first relay, and the protocol entities related to the PC5 interface {PC5-SRAP, PC5-RLC, PC5-MAC, PC5-PHY} terminate at the first node and the first relay; the Uu interface is the interface between the UE and the gNB, and the protocol entities of the Uu interface terminate at the UE and the gNB respectively.

[0945] As an example, the first relay is a U2N relay UE, and before executing the first signaling, the first relay provides L2 U2N relay services to the first node.

[0946] As an example, both the first node and the first relay are UEs.

[0947] As an example, Appendix Figure 7 The gNB mentioned in the document corresponds to the second node of this application.

[0948] As an example, the protocol entities {Uu-SRAP, Uu-RLC, Uu-MAC, Uu-PHY} of the Uu interface terminate at the first relay and gNB.

[0949] As an example, in (a), the protocol entities {Uu-SDAP, Uu-PDCP} of the Uu interface terminate at the first node and the gNB. The SDAP PDU and PDCP PDU of the first node are forwarded by the first relay, but the first relay does not modify the SDAP PDU and PDCP PDU of the first node. That is, the SDAP PDU and PDCP PDU sent by the first node to the gNB are transparent to the first relay.

[0950] As an example, in (b), the protocol entities {Uu-RRC, Uu-PDCP} of the Uu interface terminate at the first node and the gNB. The RRC PDU and PDCP PDU of the first node are forwarded by the first relay, but the first relay does not modify the RRC PDU and PDCP PDU sent by the first node. That is, the RRC PDU and PDCP PDU sent by the first node to the gNB are transparent to the first relay.

[0951] As an example, in (a), PC5-SRAP corresponds to the attached... Figure 3 The SRAP357 and PC5-RLC corresponding to it are attached. Figure 3 The RLC353 and PC5-MAC corresponding to it are attached. Figure 3 The MAC352 and PC5-PHY corresponding to it are attached. Figure 3 PHY351 in the middle.

[0952] As an example, in (a), Uu-SDAP corresponds to the attached Figure 3 The SDAP356 and Uu-PDCP corresponding to it are attached. Figure 3 PDCP354 in [the context of PDCP354].

[0953] As an example, in (b), PC5-SRAP corresponds to the attached... Figure 3 The SRAP307 and PC5-RLC corresponding to it are attached. Figure 3 The RLC303 and PC5-MAC corresponding to it are attached. Figure 3 The MAC302 and PC5-PHY corresponding to it are attached. Figure 3 The PHY301 in the text.

[0954] As an example, in (b), Uu-RRC corresponds to the attached Figure 3 RRC306, Uu-PDCP corresponding to the appendix Figure 3 PDCP304 in [the text].

[0955] As an example, Appendix Figure 7 One of the cells of the gNB mentioned above is the PCell of the first relay, and the first relay is in RRC connected state.

[0956] As an example, the first cell group is the MCG of the first relay.

[0957] As an example, PC5-SRAP is used only for specific RBs, messages, or data.

[0958] As a sub-implementation of this embodiment, when the first relay forwards the system information of the gNB, the PC5-SRAP layer is not used.

[0959] As an example, Appendix Figure 7 In this context, the communication between the first node and the gNB uses a non-direct path.

[0960] As an example, Appendix Figure 7 In this context, the communication between the first node and the gNB uses a direct path.

[0961] As an example, Appendix Figure 7 In this context, the communication between the first node and the gNB uses both direct and indirect paths.

[0962] As one embodiment, the first signaling is attached Figure 7 The Uu-RRC of the gNB in ​​(b) is generated and received by the Uu-RRC of the first node.

[0963] As an example, the first signaling is transparent to the first relay.

[0964] As one embodiment, the first information is forwarded to the gNB by the first relay.

[0965] As an example, the first information is sent directly to the gNB without being relayed.

[0966] As an example, when using a non-direct path, the first node's Uu-PDCP is associated with the PC5-RLC, or associated with the PC5-RLC via PC5-SRAP.

[0967] As an example, when using a direct path, the first node will establish a Uu-RLC, and the Uu-PDCP of the first node will be associated with the Uu-RLC.

[0968] As a sub-implementation of this embodiment, after switching to the direct path, the first node releases the PC5-RLC.

[0969] As a sub-implementation of this embodiment, after switching to the direct path, the first node releases PC5-SRAP.

[0970] As a sub-implementation of this embodiment, after switching to the direct path, the first node releases PC5-MAC and PC5-PHY.

[0971] As a sub-implementation of this embodiment, after switching to the direct path, the first node no longer uses PC5-SRAP.

[0972] As a sub-implementation of this embodiment, after switching to the direct path, there are no other protocol layers between the Uu-PDCP and Uu-RLC of the first node.

[0973] As one embodiment, the second carrier is attached Figure 7 The wireless link between the first node and the first relay in (a) and / or (b).

[0974] As one embodiment, the second carrier is attached Figure 7The secondary wireless link between the first node and the first relay in (a) and / or (b).

[0975] As one embodiment, the second carrier is attached Figure 7 The secondary link RLC bearer between the first node and the first relay in (a) and / or (b).

[0976] As one embodiment, the second carrier is attached Figure 7 The transmission channel between the first node and the first relay in (a) and / or (b).

[0977] As one embodiment, the second carrier is attached Figure 7 The logical channel between the first node and the first relay in (a) and / or (b).

[0978] As one embodiment, the second carrier is attached Figure 7 The physical channel between the first node and the first relay in (a) and / or (b).

[0979] As one embodiment, the second carrier is attached Figure 7 The direct unicast link between the first node and the first relay in (a) and / or (b).

[0980] As one embodiment, the second carrier is attached Figure 7 The interface between the first node and the first relay PC5-SRAP entity in (a) and / or (b).

[0981] As one embodiment, the second carrier is attached Figure 7 The PC5 interface between the first node and the first relay in (a) and / or (b).

[0982] As an example, Appendix Figure 7 (c) in the diagram represents the protocol stack for communication between the first node and the gNB when no relay is used.

[0983] As an example, Appendix Figure 7 (c) in the table represents the protocol stack for communication between the first node and the gNB when no relay is used, i.e., when a direct path is used.

[0984] As one embodiment, the first bearer is attached Figure 7 The wireless bearer between the first node and the gNB in ​​(c).

[0985] As one embodiment, the first bearer is attached Figure 7 The wireless link between the first node and the gNB in ​​(c).

[0986] As one embodiment, the first bearer is attached Figure 7 The RLC bearer between the first node and the gNB in ​​(c).

[0987] As one embodiment, the first bearer is attached Figure 7 The channel between the first node and the gNB in ​​(c).

[0988] As one embodiment, the first bearer is attached Figure 7 The logical channel between the first node and the gNB in ​​(c).

[0989] As one embodiment, the first bearer is attached Figure 7 The physical channel between the first node and the gNB in ​​(c).

[0990] As one embodiment, the first bearer is attached Figure 7 The Uu interface between the first node and the gNB in ​​(c).

[0991] Example 8

[0992] Example 8 illustrates a schematic diagram of a topology according to an embodiment of this application, as shown in the attached diagram. Figure 8 As shown.

[0993] The topology of Example 8 and the definitions of the first and second types of bearers are applicable to other examples, including Example 5.

[0994] The first node in Example 8 corresponds to the first node of this application.

[0995] As an example, the second node in Example 8 corresponds to the first cell group of this application.

[0996] As an example, the second node in Example 8 corresponds to the main cell of the first cell group of this application.

[0997] As an example, the second node in Example 8 corresponds to the gNB corresponding to the first cell group of this application.

[0998] As an example, the second node in Example 8 corresponds to the PCell of the first node in this application.

[0999] As an example, the second node in Example 8 corresponds to a transmission point of the main cell group of the first node in this application.

[1000] As an example, the third node in Example 8 is a relay node of the first node.

[1001] As an example, the third node in Example 8 is the first relay.

[1002] As an example, the third node in Example 8 is the second relay.

[1003] As an example, the third node in Example 8 is the third relay, which is an L2U2N relay UE. The third relay is a node other than the first and second relays, and the fourth bearer is associated with the third relay.

[1004] As a sub-implementation of this embodiment, the fourth bearer is a non-direct path, and the data of the fourth bearer is forwarded through the third relay.

[1005] As a sub-implementation of this embodiment, the data carried by the fourth bearer is forwarded through the third relay.

[1006] As a sub-implementation of this embodiment, the fourth bearer is or includes a secondary wireless link between the first node and the third relay.

[1007] As a sub-implementation of this embodiment, the fourth bearer is or includes a secondary link RLC bearer between the first node and the third relay.

[1008] As a sub-implementation of this embodiment, the fourth bearer is or includes the channel between the first node and the third relay.

[1009] As a sub-implementation of this embodiment, the fourth bearer is or includes a direct link between the first node and the third relay.

[1010] As an example, the third node in Example 8 is a relay node between the first node and the second node.

[1011] As an example, the third node in Example 8 is an L2 U2N relay UE of the first node.

[1012] As an example, the third node in Example 8 is a SCell of the first cell group.

[1013] As an example, the third node in Example 8 is a transmission point of the first cell group.

[1014] As an example, the third node in Example 8 is a cell outside of PCell.

[1015] As an example, the third node in Example 8 is a neighboring cell.

[1016] As an example, the third node in Example 8 is a repeater of the first cell group.

[1017] As an example, the third node in Example 8 is a node of TN.

[1018] As an example, the third node in Example 8 is a node of NTN.

[1019] As an example, the first bearer refers to the bearer between the first node and the second node.

[1020] As an example, the first bearer refers to the wireless link between the first node and the second node.

[1021] As an example, the first bearer refers to the RLC bearer between the first node and the second node.

[1022] As an example, the first bearer refers to the communication link between the first node and the second node.

[1023] As an example, the first bearer refers to the channel between the first node and the second node.

[1024] As an example, the first bearer refers to the communication interface between the first node and the second node.

[1025] As an example, the first bearer is unrelated to the relay.

[1026] As one example, the second bearer is related to a relay.

[1027] As one embodiment, the second bearer is a bearer between the first node and the third node, where the third node is the first relay.

[1028] As one embodiment, the second bearer is a secondary wireless link between the first node and the third node, and the third node is the first relay.

[1029] As one embodiment, the second bearer is a communication link between the first node and the third node, and the third node is the first relay.

[1030] As one embodiment, the second bearer is the communication interface between the first node and the third node, and the third node is the first relay.

[1031] As one embodiment, the second bearer is a secondary link RLC bearer between the first node and the third node, and the third node is the first relay.

[1032] As one embodiment, the second bearer is the channel between the first node and the third node, where the third node is the first relay.

[1033] As one embodiment, the second bearer is between the first node and the second node, passing through the third node, which is the first relay.

[1034] As one embodiment, the second bearer is a communication link between the first node and the second node, passing through the third node, where the third node is the first relay.

[1035] As one embodiment, the second bearer includes a secondary link RLC bearer between the first node and the third node and an RLC bearer between the third node and the second node, wherein the third node is the first relay.

[1036] As one embodiment, the second bearer includes a channel between the first node and the third node and a channel between the third node and the second node, wherein the third node is the first relay.

[1037] As one embodiment, the second bearer includes a secondary wireless link between the first node and the third node and a wireless link between the third node and the second node, wherein the third node is the first relay.

[1038] As an example, the first bearer is a direct path.

[1039] As an example, the link between the first node and the second node that does not go through the third node is a direct path.

[1040] As an example, the link between the first node and the second node, forwarded through the third node, is a non-direct path.

[1041] As an example, a direct path is a communication method or transmission path between the first node and the second node that does not involve communication through the third node.

[1042] As an example, a non-direct path is a communication method or transmission path between the first node and the second node through the third node.

[1043] As an example, the first bearer is or belongs to a direct path.

[1044] As one example, the second bearer is a non-direct path.

[1045] As one embodiment, both the first bearer and the second bearer are directed to the first node.

[1046] As one embodiment, both the first bearer and the second bearer are for data transmission between the first node and the second node.

[1047] As one embodiment, the second bearer includes the first node and the third node, as well as the transmission path between the third node and the second node.

[1048] As one embodiment, the second bearer includes a direct link between the first node and the third node.

[1049] As one embodiment, the second bearer includes a PC5 direct link between the first node and the third node.

[1050] As one embodiment, the third bearer is the bearer between the first node and the third node, and the third node is the second relay.

[1051] As one embodiment, the third bearer is a secondary wireless link between the first node and the third node, and the third node is the second relay.

[1052] As one embodiment, the third bearer is the communication link between the first node and the third node, and the third node is the second relay.

[1053] As one embodiment, the third bearer is the communication interface between the first node and the third node, and the third node is the second relay.

[1054] As an example, the third bearer is a secondary link RLC bearer between the first node and the third node, and the third node is the second relay.

[1055] As one embodiment, the third bearer is the channel between the first node and the third node, and the third node is the second relay.

[1056] As one embodiment, the third bearer is between the first node and the second node, passing through the third node, which is the second relay.

[1057] As one embodiment, the third bearer is a communication link between the first node and the second node, passing through the third node, which is the second relay.

[1058] As one embodiment, the third bearer includes a secondary link RLC bearer between the first node and the third node and an RLC bearer between the third node and the second node, wherein the third node is the second relay.

[1059] As one embodiment, the third bearer includes a channel between the first node and the third node and a channel between the third node and the second node, wherein the third node is the second relay.

[1060] As one embodiment, the third bearer includes a secondary wireless link between the first node and the third node and a wireless link between the third node and the second node, wherein the third node is the second relay.

[1061] As one embodiment, the fourth bearer is the bearer between the first node and the third node, and the third node is the third relay.

[1062] As one embodiment, the fourth bearer is a secondary wireless link between the first node and the third node, and the third node is the third relay.

[1063] As one embodiment, the fourth bearer is the communication link between the first node and the third node, and the third node is the third relay.

[1064] As one embodiment, the fourth bearer is the communication interface between the first node and the third node, and the third node is the third relay.

[1065] As an example, the fourth bearer is a secondary link RLC bearer between the first node and the third node, and the third node is the third relay.

[1066] As one embodiment, the fourth bearer is the channel between the first node and the third node, and the third node is the third relay.

[1067] As one embodiment, the fourth bearer is the bearer between the first node and the second node, passing through the third node, which is the third relay.

[1068] As one embodiment, the fourth bearer is a communication link between the first node and the second node, passing through the third node, which is the third relay.

[1069] As one embodiment, the fourth bearer includes a secondary link RLC bearer between the first node and the third node and an RLC bearer between the third node and the second node, wherein the third node is the third relay.

[1070] As one embodiment, the fourth bearer includes a channel between the first node and the third node and a channel between the third node and the second node, wherein the third node is the third relay.

[1071] As one embodiment, the fourth bearer includes a secondary wireless link between the first node and the third node and a wireless link between the third node and the second node, wherein the third node is the third relay.

[1072] Example 9

[1073] Example 9 illustrates a schematic diagram of how first information, according to an embodiment of this application, is used to indicate a first bearer failure, as shown in the attached diagram. Figure 9 As shown.

[1074] As an example, the first information explicitly indicates that the first bearer has failed.

[1075] As an example, the first information implicitly indicates that the first bearer has failed.

[1076] As an example, the first information explicitly indicates the cause of the first bearer failure.

[1077] As an example, the first information explicitly indicates the type of failure of the first bearer.

[1078] As an example, the transmission of the first information indicates that the first bearer has failed.

[1079] As an example, the first information is one or more fields of an RRC message.

[1080] As an example, the first information is one or more information elements of an RRC message.

[1081] As one example, the first information indicates the identity of the first bearer.

[1082] As one embodiment, the first information indicates the logical channel identity of the first bearer.

[1083] As one example, the first information indicates the cell group identity of the first bearer.

[1084] As an example, the first information indicates the cell identity of the first bearer.

[1085] As an example, the first information indicates the time when the first bearer failed.

[1086] As one embodiment, the first information indicates whether the first bearer is the first bearer.

[1087] As one embodiment, the first information indicates whether the first bearer is the second bearer.

[1088] As an example, the resources occupied by the first information indicate whether the first bearer is the first bearer or the second bearer.

[1089] As an example, the bearer occupied by the first information indicates whether the first bearer is the first bearer or the second bearer.

[1090] As an example, when the first information is sent on the first bearer, the first information indicates that the second bearer has failed.

[1091] As an example, when the first information is sent on the second bearer, the first information indicates that the first bearer has failed.

[1092] As an example, the first information indicates the identity of the relay of the first node.

[1093] As a sub-implementation of this embodiment, the first bearer is the first bearer.

[1094] As a sub-implementation of this embodiment, the first bearer is the second bearer.

[1095] As an example, the first information is always sent on the first bearer.

[1096] As an example, the first information is always sent on the direct path.

[1097] As an example, the first information does not use relay forwarding.

[1098] As one embodiment, the first information is or includes at least a portion of the fields in SidelinkUEInformation.

[1099] As an example, when the first bearer is the first bearer, the first information indicates rlc-failure.

[1100] As an example, when the first bearer is the second bearer, the first information indicates sl-rlc-failure.

[1101] As one example, the first information includes the failureType field.

[1102] As one embodiment, the first information indicates the logical channel identity corresponding to the first bearer.

[1103] As an example, the first information indicates the temporary identity of the first node, which is an identity in the SRAP layer of the first node.

[1104] As a sub-implementation of this embodiment, the first bearer is the first bearer.

[1105] As a sub-implementation of this embodiment, the first bearer is the second bearer.

[1106] As one embodiment, the first information indicates a bearer failure, and indicates whether the failed bearer is the first bearer or the second bearer.

[1107] Example 10

[1108] Example 10 illustrates a schematic diagram of a first field used to indicate a path translation for a second bearer according to an embodiment of this application, as shown in the attached diagram. Figure 10 As shown.

[1109] As one embodiment, the first field includes parameters for path transformation for the second bearer.

[1110] As an example, the first field indicates the path translation for the second bearer.

[1111] As an example, the sl-PathSwitchConfig field included in the first field is used to indicate the path translation for the second bearer.

[1112] As an example, the first domain includes the identity of the destination L2 U2N relay UE.

[1113] As a sub-implementation of this embodiment, the target L2 U2N relay UE is an L2U2N relay UE other than the first relay.

[1114] As an example, the secondary link RLC bearer included in the first domain is configured for path translation for the second bearer.

[1115] As a sub-example of this embodiment, the secondary link RLC bearer configuration included in the first domain is a secondary link RLC bearer configuration other than the second bearer.

[1116] As a sub-example of this embodiment, the secondary link RLC bearer configuration included in the first domain is a secondary link RLC bearer configuration other than the secondary link RLC bearer associated with the second bearer.

[1117] As a sub-implementation of this embodiment, the configuration of the secondary link RLC bearer included in the first domain is or includes the configuration parameters of the RLC entity corresponding to the secondary link RLC bearer included in the first domain.

[1118] As one example, the second bearer is a non-direct path.

[1119] As an example, the meaning of the phrase for path transformation of the second bearer includes: the path associated with the second bearer is transformed.

[1120] As an example, the meaning of the phrase for path transformation of the second bearer includes: the path transformation is related to the second bearer.

[1121] As an example, the meaning of the phrase "path transformation for the second bearer" includes: path transformation includes performing at least one operation from a third set of operations on the second bearer; the third set of operations includes stopping, suspending, deactivating, and releasing.

[1122] As an example, the meaning of the phrase for path transformation of the second bearer includes: path transformation includes transforming the second bearer into another bearer, which is also a non-direct path.

[1123] As an example, the meaning of the phrase for path translation of the second bearer includes: performing a translation from a direct path to a non-direct path.

[1124] As an example, the meaning of the phrase for path translation of the second bearer includes: performing a translation from a non-direct path to a direct path.

[1125] As an example, the meaning of the phrase for path translation of the second bearer includes: performing a translation from an indirect path to an indirect path.

[1126] As an example, the meaning of the path transition for the second bearer in the phrase includes: stopping the use of the second bearer to transmit data for the first cell group, and starting to use a bearer other than the second bearer to transmit data for the first cell group.

[1127] As a sub-implementation of this embodiment, the bearer other than the second bearer is a secondary link wireless link.

[1128] As a sub-implementation of this embodiment, the bearer other than the second bearer is a secondary link RLC bearer.

[1129] As a sub-implementation of this embodiment, the bearer other than the second bearer is a secondary link channel.

[1130] As a sub-implementation of this embodiment, the bearer other than the second bearer is a direct link.

[1131] As a sub-example of this embodiment, the action of stopping the use of the second bearer includes releasing the second bearer.

[1132] As a sub-example of this embodiment, the behavior of stopping the use of the second bearer includes suspending the second bearer.

[1133] As a sub-example of this embodiment, the behavior of stopping the use of the second bearer includes deactivating the second bearer.

[1134] As a sub-example of this embodiment, the action of deactivating the second bearer includes removing the mapping relationship between the second bearer and the first cell group or the radio bearer of the first cell group.

[1135] As a sub-implementation of this embodiment, the relay associated with the bearer other than the second bearer is a fourth relay, which is different from the first relay; the fourth relay is an L2 U2N relay UE; the action of stopping the use of the second bearer to transmit data for the first cell group and starting to use a bearer other than the second bearer to transmit data for the first cell group includes selecting the fourth relay as the U2N relay of the first node.

[1136] As a sub-implementation of this embodiment, the relay associated with the bearer other than the second bearer is a fourth relay, which is different from the first relay; the fourth relay is an L2 U2N relay UE; the action of stopping the use of the second bearer to transmit data for the first cell group and starting to use a bearer other than the second bearer to transmit data for the first cell group includes stopping the use of the first relay.

[1137] As a sub-implementation of this embodiment, the relay associated with the bearer other than the second bearer is a fourth relay, which is different from the first relay; the fourth relay is an L2 U2N relay UE; the action of stopping the use of the second bearer to transmit data for the first cell group and starting to use a bearer other than the second bearer to transmit data for the first cell group includes considering the fourth relay as the destination L2 U2N relay UE.

[1138] As an example, the meaning of the path transition for the second bearer in the phrase includes: stopping the use of the second bearer to transmit data for the first cell group, and starting to use a bearer other than the second bearer to transmit data for the first cell group.

[1139] As a sub-implementation of this embodiment, the bearer other than the second bearer is a secondary link wireless link.

[1140] As a sub-implementation of this embodiment, the bearer other than the second bearer is a secondary link RLC bearer.

[1141] As a sub-implementation of this embodiment, the bearer other than the second bearer is a secondary link channel.

[1142] As a sub-implementation of this embodiment, the bearer other than the second bearer is a direct link.

[1143] As an example, the meaning of the phrase for path switching of the second bearer includes: stopping the use of the second bearer to transmit data of the first wireless bearer, and starting to use a bearer other than the second bearer to transmit data of the first wireless bearer.

[1144] As a sub-implementation of this embodiment, the bearer other than the second bearer is a secondary link wireless link.

[1145] As a sub-implementation of this embodiment, the bearer other than the second bearer is a secondary link RLC bearer.

[1146] As a sub-implementation of this embodiment, the bearer other than the second bearer is a secondary link channel.

[1147] As a sub-implementation of this embodiment, the bearer other than the second bearer is a direct link.

[1148] As a sub-implementation of this embodiment, the first wireless bearer is a wireless bearer.

[1149] As a sub-implementation of this embodiment, the first wireless bearer is or includes SRB1.

[1150] As a sub-implementation of this embodiment, the first wireless bearer is or includes a DRB.

[1151] As a sub-implementation of this embodiment, the first wireless bearer is or includes an MRB.

[1152] As a sub-example of this embodiment, the action of stopping the use of the second bearer to transmit data of the first wireless bearer includes releasing the second bearer.

[1153] As a sub-example of this embodiment, the action of stopping the transmission of data from the first wireless bearer using the second bearer includes suspending the second bearer.

[1154] As a sub-example of this embodiment, the action of stopping the transmission of data from the first wireless bearer using the second bearer includes deactivating the second bearer.

[1155] As a sub-implementation of this embodiment, the action of stopping the use of the second bearer to transmit data of the first wireless bearer includes demapping the mapping relationship between the second bearer and the first wireless bearer.

[1156] As a sub-example of this embodiment, the action of starting to transmit data of the first wireless bearer using a bearer other than the second bearer includes: activating the bearer other than the second bearer.

[1157] As a sub-example of this embodiment, the action of starting to transmit data of the first wireless bearer using a bearer other than the second bearer includes: establishing a mapping relationship between the bearer other than the second bearer and the first wireless bearer.

[1158] As a sub-implementation of this embodiment, the relay associated with the bearer other than the second bearer is a fourth relay, which is different from the first relay; the fourth relay is an L2 U2N relay UE; the action of stopping the use of the second bearer to transmit data of the first radio bearer and starting to use a bearer other than the second bearer to transmit data of the first radio bearer includes selecting the fourth relay as the U2N relay of the first node.

[1159] As a sub-implementation of this embodiment, the relay associated with the bearer other than the second bearer is a fourth relay, which is different from the first relay; the fourth relay is an L2 U2N relay UE; the action of stopping the use of the second bearer to transmit data of the first radio bearer and starting to use a bearer other than the second bearer to transmit data of the first radio bearer includes stopping the use of the first relay.

[1160] As a sub-implementation of this embodiment, the relay associated with the bearer other than the second bearer is a fourth relay, which is different from the first relay; the fourth relay is an L2 U2N relay UE; the action of stopping the use of the second bearer to transmit data of the first radio bearer and starting to use a bearer other than the second bearer to transmit data of the first radio bearer includes considering the fourth relay as the destination L2 U2N relay UE.

[1161] Example 11

[1162] Example 11 illustrates a schematic diagram of a first field used to indicate a path transition of a third bearer according to an embodiment of this application, as shown in the attached diagram. Figure 11 As shown.

[1163] As an example, the first domain includes parameters for path transformation for the third bearer.

[1164] As an example, the first field indicates the path translation for the third bearer.

[1165] As an example, the sl-PathSwitchConfig field included in the first field is used to indicate path translation for the third bearer.

[1166] As an example, the first field indicates that the third bearer is converted to the second bearer.

[1167] As a sub-example of this embodiment, the behavior of the first domain indicating to convert the third bearer to the second bearer includes: starting to use the second bearer and stopping the use of the third bearer.

[1168] As a sub-implementation of this embodiment, the behavior of the first domain indicating to convert the third bearer to the second bearer includes: activating the use of the second bearer and deactivating the use of the third bearer.

[1169] As a sub-example of this embodiment, the behavior of the first domain indicating to convert the third bearer to the second bearer includes: continuing the second bearer and suspending the use of the third bearer.

[1170] As an example, the first domain includes the identity of the destination L2 U2N relay UE.

[1171] As a sub-implementation of this embodiment, the target L2 U2N relay UE is an L2U2N relay UE other than the first relay.

[1172] As a sub-implementation of this embodiment, the target L2 U2N relay UE is the first relay.

[1173] As an example, the secondary link RLC bearer included in the first domain is configured for path translation for the third bearer.

[1174] As a sub-example of this embodiment, the secondary link RLC bearer configuration included in the first domain is a secondary link RLC bearer configuration other than the third bearer.

[1175] As a sub-example of this embodiment, the secondary link RLC bearer configuration included in the first domain is a secondary link RLC bearer configuration other than the secondary link RLC bearer associated with the third bearer.

[1176] As a sub-implementation of this embodiment, the configuration of the secondary link RLC bearer included in the first domain is or includes the configuration parameters of the RLC entity corresponding to the secondary link RLC bearer included in the first domain.

[1177] As an example, the third bearer is a non-direct path.

[1178] As an example, the meaning of the phrase for path conversion of the third bearer includes: the path associated with the third bearer is converted.

[1179] As an example, the meaning of the phrase for path transformation of the third bearer includes: the path transformation is related to the third bearer.

[1180] As an example, the meaning of the phrase "path transformation for a third bearer" includes: path transformation includes performing at least one operation from a third set of operations on the third bearer; the third set of operations includes stopping, suspending, deactivating, and releasing.

[1181] As an example, the meaning of the phrase for path transformation of a third bearer includes: path transformation includes converting the third bearer into another bearer, which is also a non-direct path.

[1182] As an example, the meaning of the phrase for path translation of the third bearer includes: performing a direct path to a non-direct path translation.

[1183] As an example, the meaning of the phrase for path translation for a third bearer includes: performing a translation from a non-direct path to a direct path.

[1184] As an example, the meaning of the phrase for path translation of the third bearer includes: performing a translation from an indirect path to an indirect path.

[1185] As an example, the meaning of the path transition for the third bearer includes: ceasing to use the third bearer to transmit data for the first cell group, and starting to use a bearer other than the third bearer to transmit data for the first cell group.

[1186] As a sub-implementation of this embodiment, the bearer other than the third bearer is a secondary link wireless link.

[1187] As a sub-example of this embodiment, the bearer other than the third bearer is a secondary link RLC bearer.

[1188] As a sub-example of this embodiment, the bearer other than the third bearer is a secondary link channel.

[1189] As a sub-implementation of this embodiment, the bearer other than the third bearer is a direct link.

[1190] As a sub-example of this embodiment, the behavior of stopping the use of the third bearer includes releasing the third bearer.

[1191] As a sub-example of this embodiment, the behavior of stopping the use of the third bearer includes suspending the third bearer.

[1192] As a sub-example of this embodiment, the behavior of stopping the use of the third bearer includes deactivating the third bearer.

[1193] As a sub-example of this embodiment, the action of deactivating the third bearer includes removing the mapping relationship between the third bearer and the first cell group or the radio bearer of the first cell group.

[1194] As a sub-implementation of this embodiment, the relay associated with the bearer other than the third bearer is the second relay, which is different from the first relay; the second relay is an L2 U2N relay UE; the action of stopping the use of the third bearer to transmit data for the first cell group and starting to use a bearer other than the third bearer to transmit data for the first cell group includes selecting the second relay as the U2N relay of the first node.

[1195] As a sub-implementation of this embodiment, the relay associated with the bearer other than the third bearer is the second relay, which is different from the first relay; the second relay is an L2 U2N relay UE; the action of stopping the use of the third bearer to transmit data for the first cell group and starting to use a bearer other than the third bearer to transmit data for the first cell group includes stopping the use of the first relay.

[1196] As a sub-implementation of this embodiment, the relay associated with the bearer other than the third bearer is the second relay, which is different from the first relay; the second relay is an L2 U2N relay UE; the action of stopping the use of the third bearer to transmit data for the first cell group and starting to use a bearer other than the third bearer to transmit data for the first cell group includes considering the second relay as the destination L2 U2N relay UE.

[1197] As a sub-implementation of this embodiment, the carrier other than the third carrier is the second carrier.

[1198] As an example, the meaning of the path transition for the third bearer includes: ceasing to use the third bearer to transmit data for the first cell group, and starting to use a bearer other than the third bearer to transmit data for the first cell group.

[1199] As a sub-implementation of this embodiment, the bearer other than the third bearer is a secondary link wireless link.

[1200] As a sub-example of this embodiment, the bearer other than the third bearer is a secondary link RLC bearer.

[1201] As a sub-example of this embodiment, the bearer other than the third bearer is a secondary link channel.

[1202] As a sub-implementation of this embodiment, the bearer other than the third bearer is a direct link.

[1203] As a sub-implementation of this embodiment, the carrier other than the third carrier is the second carrier.

[1204] As an example, the meaning of the phrase for path switching of the third bearer includes: stopping the use of the third bearer to transmit data of the first wireless bearer, and starting to use a bearer other than the third bearer to transmit data of the first wireless bearer.

[1205] As a sub-implementation of this embodiment, the bearer other than the third bearer is a secondary link wireless link.

[1206] As a sub-example of this embodiment, the bearer other than the third bearer is a secondary link RLC bearer.

[1207] As a sub-example of this embodiment, the bearer other than the third bearer is a secondary link channel.

[1208] As a sub-implementation of this embodiment, the bearer other than the third bearer is a direct link.

[1209] As a sub-implementation of this embodiment, the first wireless bearer is a wireless bearer.

[1210] As a sub-implementation of this embodiment, the first wireless bearer is or includes SRB1.

[1211] As a sub-implementation of this embodiment, the first wireless bearer is or includes a DRB.

[1212] As a sub-implementation of this embodiment, the first wireless bearer is or includes an MRB.

[1213] As a sub-example of this embodiment, the action of stopping the use of the third bearer to transmit data of the first wireless bearer includes releasing the third bearer.

[1214] As a sub-example of this embodiment, the action of stopping the transmission of data of the first wireless bearer using the third bearer includes suspending the third bearer.

[1215] As a sub-example of this embodiment, the action of stopping the transmission of data of the first radio bearer using the third bearer includes deactivating the third bearer.

[1216] As a sub-example of this embodiment, the action of stopping the use of the third bearer to transmit data of the first wireless bearer includes unmapping the mapping relationship between the third bearer and the first wireless bearer.

[1217] As a sub-example of this embodiment, the action of starting to transmit data of the first wireless bearer using a bearer other than the third bearer includes: activating the bearer other than the third bearer.

[1218] As a sub-example of this embodiment, the action of starting to transmit data of the first wireless bearer using a bearer other than the third bearer includes: establishing a mapping relationship between the bearer other than the third bearer and the first wireless bearer.

[1219] As a sub-implementation of this embodiment, the relay associated with the bearer other than the third bearer is the second relay, which is different from the first relay; the second relay is an L2 U2N relay UE; the action of stopping the use of the third bearer to transmit data of the first radio bearer and starting to use a bearer other than the third bearer to transmit data of the first radio bearer includes selecting the second relay as the U2N relay of the first node.

[1220] As a sub-implementation of this embodiment, the relay associated with the bearer other than the third bearer is the second relay, which is different from the first relay; the second relay is an L2 U2N relay UE; the action of stopping the use of the third bearer to transmit data of the first radio bearer and starting to use a bearer other than the third bearer to transmit data of the first radio bearer includes stopping the use of the first relay.

[1221] As a sub-implementation of this embodiment, the relay associated with the bearer other than the third bearer is the second relay, which is different from the first relay; the second relay is an L2 U2N relay UE; the action of stopping the use of the third bearer to transmit data of the first radio bearer and starting to use a bearer other than the third bearer to transmit data of the first radio bearer includes considering the second relay as the destination L2 U2N relay UE.

[1222] As a sub-implementation of this embodiment, the carrier other than the third carrier is the second carrier.

[1223] Example 12

[1224] Example 12 illustrates a schematic diagram of a third signaling according to an embodiment of this application being used to indicate a path transition for a target bearer, as shown in the attached diagram. Figure 12 As shown.

[1225] As one embodiment, the third signaling is used to indicate a path transition for the target bearer;

[1226] The first set of operations includes: executing the third signaling; the reception of the third signaling occurs before the action detects a target bearer failure.

[1227] As one example, the target bearer is the second bearer.

[1228] As one embodiment, the target bearer is the first bearer.

[1229] As an example, the target bearer is a direct path.

[1230] As an example, the target bearer is a non-direct path.

[1231] As an example, the third signaling indicates a condition-based path transition.

[1232] As a sub-implementation of this embodiment, the first node performs the path transformation when the conditions associated with the path transformation are met.

[1233] As a sub-example of this embodiment, the condition associated with the path conversion includes the measurement result of the destination relay of the path conversion being greater than a certain threshold.

[1234] As a sub-example of this embodiment, the conditions associated with the path switching include the measurement result of the destination cell of the path switching being greater than a certain threshold.

[1235] As a sub-example of this embodiment, the conditions associated with the path conversion include the measurement result of the target bearer being less than a certain threshold.

[1236] As a sub-example of this embodiment, the conditions associated with the path conversion include detecting the target bearer failure.

[1237] As an example, the target bearer is the first bearer, and the third signaling is used to indicate a transition from a direct path to a non-direct path.

[1238] As one embodiment, the target bearer is the second bearer, and the third signaling is used to indicate a transition from a direct path to a non-direct path.

[1239] As one embodiment, the target bearer is the first bearer, and the third signaling is used to indicate a transition from an indirect path to a direct path.

[1240] As an example, the third signaling instructs the target bearer to perform a switch from a direct path to a non-direct path.

[1241] As an example, the meaning of the path transition for the target bearer in the phrase includes: ceasing the use of the target bearer to transmit data for the first cell group.

[1242] As an example, the meaning of the phrase for path transformation of the target bearer includes: releasing the target bearer.

[1243] As an example, the meaning of the phrase for path translation of the target bearer includes: releasing the RLC entity associated with the target bearer.

[1244] As an example, the meaning of the phrase for path translation of the target bearer includes: suspending the target bearer.

[1245] As a sub-implementation of this embodiment, the target bearer is the first bearer.

[1246] As a sub-example of this embodiment, the behavior execution switching from a direct path to an indirect path includes switching the target bearer to the second bearer.

[1247] As an example, the third signaling includes parameters for path translation for the target bearer.

[1248] As an example, the third signaling indicates a path transition for the target bearer.

[1249] As an example, the sl-PathSwitchConfig field included in the third signaling is used to indicate path translation for the target bearer.

[1250] As an example, the third signaling instruction indicates that the target bearer be converted to the second bearer.

[1251] As a sub-implementation of this embodiment, the behavior of the third signaling instruction to convert the target bearer to the second bearer includes: starting to use the second bearer and stopping the use of the target bearer.

[1252] As a sub-implementation of this embodiment, the behavior of the third signaling instruction to convert the target bearer to the second bearer includes: activating the use of the second bearer and deactivating the use of the target bearer.

[1253] As a sub-implementation of this embodiment, the behavior of the third signaling instruction to convert the target bearer to the second bearer includes: continuing the second bearer and suspending the use of the target bearer.

[1254] As one embodiment, the third signaling includes the identity of the destination L2 U2N relay UE.

[1255] As a sub-implementation of this embodiment, the target L2 U2N relay UE is an L2U2N relay UE other than the first relay.

[1256] As a sub-implementation of this embodiment, the target L2 U2N relay UE is the first relay.

[1257] As an example, the sublink RLC bearer configuration included in the third signaling is used for path translation for the target bearer.

[1258] As a sub-example of this embodiment, the secondary link RLC bearer configuration included in the third signaling is a secondary link RLC bearer configuration other than the target bearer.

[1259] As a sub-example of this embodiment, the secondary link RLC bearer configuration included in the third signaling is a secondary link RLC bearer configuration other than the secondary link RLC bearer associated with the target bearer.

[1260] As a sub-example of this embodiment, the secondary link RLC bearer configuration included in the third signaling is the secondary link RLC bearer configuration associated with the second bearer.

[1261] As a sub-example of this embodiment, the configuration of the secondary link RLC bearer included in the third signaling is or includes the configuration parameters of the RLC entity corresponding to the secondary link RLC bearer included in the third signaling.

[1262] As an example, the target bearer is a non-direct path.

[1263] As an example, the meaning of the phrase "path transformation for target bearer" includes: the path associated with the target bearer is transformed.

[1264] As an example, the meaning of the phrase "path transformation for target bearer" includes: the path transformation is related to the target bearer.

[1265] As an example, the meaning of the phrase "path transformation for target bearer" includes: path transformation includes performing at least one operation from a third set of operations on the target bearer; the third set of operations includes stopping, suspending, deactivating, and releasing.

[1266] As an example, the meaning of the phrase "path transformation for target bearer" includes: path transformation includes converting the target bearer into another bearer, which is also a non-direct path.

[1267] As an example, the meaning of the phrase for path transformation of the target includes: performing a transformation from a direct path to a non-direct path.

[1268] As an example, the meaning of the phrase for path transformation of the target includes: performing a transformation from a non-direct path to a direct path.

[1269] As an example, the meaning of the phrase for path transformation of the target includes: performing a transformation from an indirect path to an indirect path.

[1270] As an example, the meaning of the path transition for the target bearer in the phrase includes: stopping the use of the target bearer to transmit data for the first cell group, and starting to use a bearer other than the target bearer to transmit data for the first cell group.

[1271] As a sub-example of this embodiment, the bearer other than the target bearer is the second bearer.

[1272] As a sub-example of this embodiment, the bearer other than the target bearer is the third bearer.

[1273] As a sub-example of this embodiment, the bearer other than the target bearer is the fourth bearer.

[1274] As a sub-example of this embodiment, the bearer other than the target bearer is a secondary link radio link.

[1275] As a sub-example of this embodiment, the bearer other than the target bearer is a secondary link RLC bearer.

[1276] As a sub-example of this embodiment, the bearer other than the target bearer is a secondary link channel.

[1277] As a sub-example of this embodiment, the bearer other than the target bearer is a direct link.

[1278] As a sub-example of this embodiment, the action of stopping the use of the target bearer includes releasing the target bearer.

[1279] As a sub-example of this embodiment, the behavior of stopping the use of the target bearer includes suspending the target bearer.

[1280] As a sub-example of this embodiment, the action of stopping the use of the target bearer includes deactivating the target bearer.

[1281] As a sub-example of this embodiment, the action of deactivating the target bearer includes removing the mapping relationship between the target bearer and the first cell group or the radio bearer of the first cell group.

[1282] As a sub-implementation of this embodiment, the relay associated with the bearer other than the target bearer is a second relay, which is different from the first relay; the second relay is an L2 U2N relay UE; the action of stopping the use of the target bearer to transmit data for the first cell group and starting to use a bearer other than the target bearer to transmit data for the first cell group includes selecting the second relay as the U2N relay of the first node.

[1283] As a sub-implementation of this embodiment, the relay associated with the bearer other than the target bearer is a second relay, which is different from the first relay; the second relay is an L2 U2N relay UE; the action of stopping the use of the target bearer to transmit data for the first cell group and starting to use a bearer other than the target bearer to transmit data for the first cell group includes stopping the use of the first relay.

[1284] As a sub-implementation of this embodiment, the relay associated with the bearer other than the target bearer is a second relay, which is different from the first relay; the second relay is an L2 U2N relay UE; the action of stopping the use of the target bearer to transmit data for the first cell group and starting to use a bearer other than the target bearer to transmit data for the first cell group includes considering the second relay as the destination L2 U2N relay UE.

[1285] As a sub-example of this embodiment, the bearer other than the target bearer is the second bearer.

[1286] As an example, the meaning of the path transition for the target bearer in the phrase includes: stopping the use of the target bearer to transmit data for the first cell group, and starting to use a bearer other than the target bearer to transmit data for the first cell group.

[1287] As a sub-example of this embodiment, the bearer other than the target bearer is the second bearer.

[1288] As a sub-example of this embodiment, the bearer other than the target bearer is the third bearer.

[1289] As a sub-example of this embodiment, the bearer other than the target bearer is the fourth bearer.

[1290] As a sub-example of this embodiment, the bearer other than the target bearer is a secondary link radio link.

[1291] As a sub-example of this embodiment, the bearer other than the target bearer is a secondary link RLC bearer.

[1292] As a sub-example of this embodiment, the bearer other than the target bearer is a secondary link channel.

[1293] As a sub-example of this embodiment, the bearer other than the target bearer is a direct link.

[1294] As a sub-example of this embodiment, the bearer other than the target bearer is the second bearer.

[1295] As an example, the meaning of the phrase "path switching for target bearer" includes: stopping the use of the target bearer to transmit data of the first wireless bearer, and starting to use a bearer other than the target bearer to transmit data of the first wireless bearer.

[1296] As a sub-example of this embodiment, the bearer other than the target bearer is a secondary link radio link.

[1297] As a sub-example of this embodiment, the bearer other than the target bearer is a secondary link RLC bearer.

[1298] As a sub-example of this embodiment, the bearer other than the target bearer is a secondary link channel.

[1299] As a sub-example of this embodiment, the bearer other than the target bearer is a direct link.

[1300] As a sub-implementation of this embodiment, the first wireless bearer is a wireless bearer.

[1301] As a sub-implementation of this embodiment, the first wireless bearer is or includes SRB1.

[1302] As a sub-implementation of this embodiment, the first wireless bearer is or includes a DRB.

[1303] As a sub-implementation of this embodiment, the first wireless bearer is or includes an MRB.

[1304] As a sub-example of this embodiment, the action of stopping the transmission of data of the first radio bearer using the target bearer includes releasing the target bearer.

[1305] As a sub-example of this embodiment, the action of stopping the transmission of data of the first wireless bearer using the target bearer includes suspending the target bearer.

[1306] As a sub-example of this embodiment, the action of stopping the transmission of data of the first radio bearer using the target bearer includes deactivating the target bearer.

[1307] As a sub-example of this embodiment, the action of stopping the transmission of data of the first wireless bearer using the target bearer includes removing the mapping relationship between the target bearer and the first wireless bearer.

[1308] As a sub-example of this embodiment, the action of starting to transmit data of the first wireless bearer using a bearer other than the target bearer includes: activating the bearer other than the target bearer.

[1309] As a sub-example of this embodiment, the action of starting to transmit data of the first wireless bearer using a bearer other than the target bearer includes: establishing a mapping relationship between the bearer other than the target bearer and the first wireless bearer.

[1310] As a sub-implementation of this embodiment, the relay associated with the bearer other than the target bearer is a second relay, which is different from the first relay; the second relay is an L2 U2N relay UE; the action of stopping the use of the target bearer to transmit data of the first radio bearer and starting to use a bearer other than the target bearer to transmit data of the first radio bearer includes selecting the second relay as the U2N relay of the first node.

[1311] As a sub-implementation of this embodiment, the relay associated with the bearer other than the target bearer is a second relay, which is different from the first relay; the second relay is an L2 U2N relay UE; the action of stopping the use of the target bearer to transmit data of the first radio bearer and starting to use a bearer other than the target bearer to transmit data of the first radio bearer includes stopping the use of the first relay.

[1312] As a sub-implementation of this embodiment, the relay associated with the bearer other than the target bearer is a second relay, which is different from the first relay; the second relay is an L2 U2N relay UE; the action of stopping the use of the target bearer to transmit data of the first radio bearer and starting to use a bearer other than the target bearer to transmit data of the first radio bearer includes considering the second relay as the target L2 U2N relay UE.

[1313] As a sub-example of this embodiment, the bearer other than the target bearer is the second bearer.

[1314] Example 13

[1315] Example 13 illustrates a structural block diagram of a processing apparatus for a first node according to an embodiment of this application; as shown in the appendix. Figure 13 As shown. In the appendix Figure 13 In the first node, the processing device 1300 includes a first receiver 1301, a first transmitter 1302, and a first processor 1303. In embodiment 13,

[1316] First receiver 1301 receives first signaling, which is used to configure a first bearer and a second bearer. Both the first bearer and the second bearer are associated with a first cell group. The first cell group is a primary cell group. Target bearer failure is detected.

[1317] A first processor 1303, in response to the detection of a target bearer failure, executes a first set of operations; the first set of operations is related to whether the target bearer is the first bearer or the second bearer;

[1318] Wherein, the second bearer is associated with the first relay, and the first relay is an L2 U2N relay UE; the meaning of the sentence "the first set of operations relates to whether the target bearer is the first bearer or the second bearer" is as follows: when the target bearer is the first bearer, the first set of operations includes at least the former of sending an RRC message and receiving an RRC message, and the first set of operations includes at least one of cell selection and relay selection; when the target bearer is the second bearer, the first set of operations includes sending first information, the first information being used to indicate that the target bearer has failed.

[1319] As an example, the SRB1 of the first node is associated only with the first bearer of the first bearer and the second bearer.

[1320] As an example, the SRB1 of the first node is associated with both the first bearer and the second bearer.

[1321] As one embodiment, the first set of operations includes: releasing the second bearer and suspending the SRB1 associated with the target bearer; the first set of operations includes: performing either cell selection or relay selection;

[1322] The first set of operations includes sending an RRC reconstruction request message.

[1323] As one embodiment, the first set of operations includes: performing at least one operation from the second set of operations only for the former of the first bearer and the second bearer;

[1324] The second set of operations includes suspend, rebuild, and release.

[1325] As one embodiment, whether the first set of operations includes initiating random access depends on whether the target bearer is the first bearer or the second bearer; when the target bearer is the first bearer, the first set of operations includes initiating a random access procedure; when the target bearer is the second bearer, the first set of operations does not include initiating a random access procedure.

[1326] As one embodiment, the first receiver 1301 receives the second signaling and, in response to receiving the second signaling, starts a first timer;

[1327] Specifically, when the action detects a target bearer failure and is executed, the first timer is in a running state; the second signaling includes a first field, the first field being reconfigurationWithSync, which is used to indicate path translation for the second bearer, the target bearer being the first bearer; the first timer is a timer other than T304.

[1328] As one embodiment, the first receiver 1301, in response to receiving the second sub-signaling, starts a first timer, suspends the third bearer, and configures the second bearer;

[1329] Wherein, the first set of operations includes: activating the third bearer; the first set of operations includes at least one of suspending the second bearer, releasing the second bearer, and reconstructing the second bearer; the first signaling includes a first sub-signaling, a second sub-signaling, and a third sub-signaling, wherein the first sub-signaling is used to configure the first bearer, the third sub-signaling is used to configure the third bearer, and the second sub-signaling is used to configure the second bearer; the third bearer is associated with a second relay, the second relay being an L2 U2N relay UE, the first relay being different from the second relay, and the third bearer is associated with the first cell group; the target bearer is the second bearer; the second sub-signaling includes a first field, the first field being ReconfigurationWithSync, the first field being used to indicate path transition for the third bearer, and the first timer being a timer other than T304; the behavior detecting target bearer failure includes detecting the expiration of the first timer.

[1330] As one embodiment, the first receiver 1301 receives a third signaling, which is used to indicate a path transition for the target bearer;

[1331] The first set of operations includes: executing the third signaling; the reception of the third signaling occurs before the action detects a target bearer failure.

[1332] As one embodiment, the first receiver 1301 receives a fourth signaling, which is used to configure a fourth bearer; the behavior of configuring the fourth bearer includes setting the fourth bearer to an inactive state;

[1333] Wherein, the first set of operations includes: activating the fourth bearer; the first set of operations includes at least one of: suspending the second bearer, deactivating the second bearer, and releasing the second bearer; the target bearer is the second bearer.

[1334] As an example, the first node is a user equipment (UE).

[1335] As an example, the first node is a terminal that supports large latency differences.

[1336] As an example, the first node is an NTN-enabled terminal.

[1337] As an example, the first node is an aircraft or a ship.

[1338] As an example, the first node is a mobile phone or vehicle terminal.

[1339] As one example, the first node is a relay UE and / or a U2N remote UE.

[1340] As an example, the first node is an Internet of Things (IoT) terminal or an industrial IoT terminal.

[1341] As an example, the first node is a device that supports low-latency, high-reliability transmission.

[1342] As an example, the first node is a secondary link communication node.

[1343] As one embodiment, the first receiver 1301 includes at least one of the following in embodiment 4: antenna 452, receiver 454, receiver processor 456, multi-antenna receiver processor 458, controller / processor 459, memory 460, or data source 467.

[1344] As one embodiment, the first transmitter 1302 includes at least one of the following in embodiment 4: antenna 452, transmitter 454, transmission processor 468, multi-antenna transmission processor 457, controller / processor 459, memory 460, or data source 467.

[1345] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The user equipment, terminal, and UE in this application include, but are not limited to, drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablets, laptops, vehicle-mounted communication equipment, wireless sensors, internet cards, IoT terminals, RFID terminals, NB-IoT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablets, satellite communication equipment, ship communication equipment, NTN user equipment, and other wireless communication equipment. The base station or system equipment in this application includes, but is not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR Node B), TRP (Transmitter Receiver Point), NTN base stations, satellite equipment, flight platform equipment, and other wireless communication equipment.

[1346] This invention may be practiced in other specified forms without departing from its core or essential characteristics. Therefore, the embodiments disclosed herein should in any way be considered descriptive rather than restrictive. The scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications within their equivalent meaning and scope are considered to be included therein.

Claims

1. A first node used for wireless communication, wherein, include: A first receiver receives a first signaling message, which is used to configure a first bearer and a second bearer, both of which are associated with a first cell group. The first cell group is the primary cell group; Target bearer failure detected; A first processor, in response to the first receiver detecting a target bearer failure, executes a first set of operations; the first set of operations is related to whether the target bearer is the first bearer or the second bearer; Wherein, the second bearer is associated with the first relay, the first relay being an L2 U2N (Layer-2 UE to Network) relay UE (User Equipment); wherein when the target bearer is the first bearer, the first set of operations includes at least the former of sending an RRC message and receiving an RRC message, and the first set of operations includes at least one of cell selection and relay selection; wherein when the target bearer is the second bearer, the first set of operations includes sending first information, the first information being used to indicate that the target bearer has failed.

2. The first node according to claim 1, characterized in that, The SRB1 of the first node is associated only with the first bearer of the first bearer and the second bearer.

3. The first node according to claim 1, characterized in that, The SRB1 of the first node is associated with both the first bearer and the second bearer.

4. The first node according to claim 1, characterized in that, The first set of operations includes: releasing the second bearer and suspending SRB1 associated with the target bearer; the first set of operations includes: performing either cell selection or relay selection. The first set of operations includes sending an RRC reconstruction request message; the target bearer is the first bearer.

5. The first node according to claim 2, characterized in that, The first set of operations includes: releasing the second bearer and suspending SRB1 associated with the target bearer; the first set of operations includes: performing either cell selection or relay selection. The first set of operations includes sending an RRC reconstruction request message; the target bearer is the first bearer.

6. The first node according to claim 1, characterized in that, The first set of operations includes: performing at least one operation from the second set of operations only on the former of the first bearer and the second bearer; The second set of operations includes suspend, rebuild, and release; the target bearer is the first bearer.

7. The first node according to claim 5, characterized in that, The first set of operations includes: performing at least one operation from the second set of operations only on the former of the first bearer and the second bearer; The second set of operations includes suspend, rebuild, and release; the target bearer is the first bearer.

8. The first node according to claim 1, characterized in that, Whether the first set of operations includes initiating random access depends on whether the target bearer is the first bearer or the second bearer; when the target bearer is the first bearer, the first set of operations includes initiating random access; when the target bearer is the second bearer, the first set of operations does not include initiating random access.

9. The first node according to claim 5, characterized in that, Whether the first set of operations includes initiating random access depends on whether the target bearer is the first bearer or the second bearer; when the target bearer is the first bearer, the first set of operations includes initiating random access; when the target bearer is the second bearer, the first set of operations does not include initiating random access.

10. The first node according to claim 7, characterized in that, Whether the first set of operations includes initiating random access depends on whether the target bearer is the first bearer or the second bearer; when the target bearer is the first bearer, the first set of operations includes initiating random access; when the target bearer is the second bearer, the first set of operations does not include initiating random access.

11. The first node according to claim 1, characterized in that, include: The first receiver receives the second signaling and, in response to receiving the second signaling, starts the first timer; Specifically, when the first receiver detects that the target bearer failure has been executed, the first timer is in running state; the second signaling includes a first field, the first field being reconfigurationWithSync, which is used to indicate path conversion for the second bearer, the target bearer being the first bearer; the first timer is a timer other than T304.

12. The first node according to claim 3, characterized in that, include: The first receiver receives the second signaling and, in response to receiving the second signaling, starts the first timer; Specifically, when the first receiver detects that the target bearer failure has been executed, the first timer is in running state; the second signaling includes a first field, the first field being reconfigurationWithSync, which is used to indicate path conversion for the second bearer, the target bearer being the first bearer; the first timer is a timer other than T304.

13. The first node according to claim 1, characterized in that, include: In response to receiving the second sub-signaling, the first receiver starts the first timer, suspends the third bearer, and configures the second bearer; Wherein, the first set of operations includes: activating the third bearer; the first set of operations includes at least one of suspending the second bearer, releasing the second bearer, and reconstructing the second bearer; the first signaling includes a first sub-signaling, a second sub-signaling, and a third sub-signaling, wherein the first sub-signaling is used to configure the first bearer, the third sub-signaling is used to configure the third bearer, and the second sub-signaling is used to configure the second bearer; the third bearer is associated with a second relay, the second relay being an L2 U2N relay UE, the first relay being different from the second relay, and the third bearer is associated with the first cell group; the target bearer is the second bearer; the second sub-signaling includes a first field, the first field being ReconfigurationWithSync, the first field being used to indicate path transition for the third bearer, and the first timer being a timer other than T304; the first receiver detecting target bearer failure includes detecting the expiration of the first timer.

14. The first node according to claim 1, characterized in that, include: The first receiver receives a third signaling message, which is used to indicate a path transition for the target bearer; The first set of operations includes: executing the third signaling; receiving the third signaling earlier than detecting the target bearer failure; the target bearer is the first bearer; and the third signaling is used to indicate a transition from a direct path to a non-direct path.

15. The first node according to claim 1, characterized in that, include: The first receiver receives a fourth signaling message, which is used to configure a fourth bearer; Configuring the fourth bearer includes setting the fourth bearer to an inactive state; Wherein, the first set of operations includes: activating the fourth bearer; the first set of operations includes at least one of: suspending the second bearer, deactivating the second bearer, and releasing the second bearer; the target bearer is the second bearer.

16. The first node according to claim 1, characterized in that, The first bearer is a direct path; the second bearer is a non-direct path.

17. The first node according to claim 2, characterized in that, The first bearer is a direct path; the second bearer is a non-direct path.

18. The first node according to claim 5, characterized in that, The first bearer is a direct path; the second bearer is a non-direct path.

19. The first node according to claim 8, characterized in that, The first bearer is a direct path; the second bearer is a non-direct path.

20. A method used in a first node of wireless communication, wherein, include: Receive first signaling, the first signaling being used to configure a first bearer and a second bearer, both of which are associated with a first cell group; The first cell group is the primary cell group; Target bearer failure detected; In response to the detection of a target bearer failure, a first set of operations is executed; the first set of operations is related to whether the target bearer is the first bearer or the second bearer. Wherein, the second bearer is associated with the first relay, the first relay being an L2 U2N relay UE; wherein when the target bearer is the first bearer, the first set of operations includes at least the former of sending an RRC message and receiving an RRC message, and the first set of operations includes at least one of cell selection and relay selection; and when the target bearer is the second bearer, the first set of operations includes sending first information, the first information being used to indicate that the target bearer has failed.

21. The method in the first node according to claim 20, characterized in that, The SRB1 of the first node is associated only with the first bearer of the first bearer and the second bearer.

22. The method in the first node according to claim 20, characterized in that, The SRB1 of the first node is associated with both the first bearer and the second bearer.

23. The method in the first node according to claim 20, characterized in that, The first set of operations includes: releasing the second bearer and suspending SRB1 associated with the target bearer; the first set of operations includes: performing either cell selection or relay selection. The first set of operations includes sending an RRC reconstruction request message; the target bearer is the first bearer.

24. The method in the first node according to claim 21, characterized in that, The first set of operations includes: releasing the second bearer and suspending SRB1 associated with the target bearer; the first set of operations includes: performing either cell selection or relay selection. The first set of operations includes sending an RRC reconstruction request message; the target bearer is the first bearer.

25. The method in the first node according to claim 20, characterized in that, The first set of operations includes: performing at least one operation from the second set of operations only on the former of the first bearer and the second bearer; The second set of operations includes suspend, rebuild, and release; the target bearer is the first bearer.

26. The method in the first node according to claim 24, characterized in that, The first set of operations includes: performing at least one operation from the second set of operations only on the former of the first bearer and the second bearer; The second set of operations includes suspend, rebuild, and release; the target bearer is the first bearer.

27. The method in the first node according to claim 20, characterized in that, Whether the first set of operations includes initiating random access depends on whether the target bearer is the first bearer or the second bearer; when the target bearer is the first bearer, the first set of operations includes initiating random access; when the target bearer is the second bearer, the first set of operations does not include initiating random access.

28. The method in the first node according to claim 24, characterized in that, Whether the first set of operations includes initiating random access depends on whether the target bearer is the first bearer or the second bearer; when the target bearer is the first bearer, the first set of operations includes initiating random access; when the target bearer is the second bearer, the first set of operations does not include initiating random access.

29. The method in the first node according to claim 26, characterized in that, Whether the first set of operations includes initiating random access depends on whether the target bearer is the first bearer or the second bearer; when the target bearer is the first bearer, the first set of operations includes initiating random access; when the target bearer is the second bearer, the first set of operations does not include initiating random access.

30. The method in the first node according to claim 20, characterized in that, include: Upon receiving the second signaling, in response to receiving the second signaling, start the first timer; Specifically, when a target bearer failure is detected, the first timer is in operation; the second signaling includes a first field, which is reconfigurationWithSync, and is used to indicate path conversion for the second bearer, the target bearer being the first bearer; the first timer is a timer other than T304.

31. The method in the first node according to claim 22, characterized in that, include: Upon receiving the second signaling, in response to receiving the second signaling, start the first timer; Specifically, when a target bearer failure is detected, the first timer is in operation; the second signaling includes a first field, which is reconfigurationWithSync, and is used to indicate path conversion for the second bearer, the target bearer being the first bearer; the first timer is a timer other than T304.

32. The method in the first node according to claim 20, characterized in that, include: In response to receiving the second sub-signaling, start the first timer, suspend the third bearer, and configure the second bearer; The first set of operations includes: activating the third bearer; the first set of operations includes at least one of suspending the second bearer, releasing the second bearer, and reconstructing the second bearer; the first signaling includes a first sub-signaling, a second sub-signaling, and a third sub-signaling, wherein the first sub-signaling is used to configure the first bearer, the third sub-signaling is used to configure the third bearer, and the second sub-signaling is used to configure the second bearer; the third bearer is associated with a second relay, which is an L2 U2N relay UE, the first relay is different from the second relay, and the third bearer is associated with the first cell group; the target bearer is the second bearer; the second sub-signaling includes a first field, which is ReconfigurationWithSync, used to indicate path transition for the third bearer, and the first timer is a timer other than T304; detecting target bearer failure includes detecting the expiration of the first timer.

33. The method in the first node according to claim 20, characterized in that, include: Receive a third signaling message, which is used to indicate a path transition for the target bearer; The first set of operations includes: executing the third signaling; receiving the third signaling earlier than detecting the target bearer failure; the target bearer is the first bearer; and the third signaling being used to indicate a transition from a direct path to a non-direct path.

34. The method in the first node according to claim 20, characterized in that, include: Receive fourth signaling, which is used to configure the fourth bearer; Configuring the fourth bearer includes setting the fourth bearer to an inactive state; Wherein, the first set of operations includes: activating the fourth bearer; the first set of operations includes at least one of: suspending the second bearer, deactivating the second bearer, and releasing the second bearer; the target bearer is the second bearer.

35. The method in the first node according to claim 20, characterized in that, The first bearer is a direct path; the second bearer is a non-direct path.

36. The method in the first node according to claim 21, characterized in that, The first bearer is a direct path; the second bearer is a non-direct path.

37. The method in the first node according to claim 24, characterized in that, The first bearer is a direct path; the second bearer is a non-direct path.

38. The method in the first node according to claim 27, characterized in that, The first bearer is a direct path; the second bearer is a non-direct path.

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