CN116266918A

CN116266918A - Method and apparatus for wireless communication

Info

Publication number: CN116266918A
Application number: CN202111549610.3A
Authority: CN
Inventors: 陈宇; 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2023-06-20

Abstract

A method and apparatus for wireless communication includes receiving first signaling including reconfigurationWithSync; after the reconfigurationWithSync is applied, detecting a radio link failure of the first radio link; transmitting a first message, wherein the first message adopts one of a first format or a second format; whether the first message is in the first format or the second format relates to whether the first signaling is for cell handover or path switching. According to the method and the device, through the first signaling and the first message, network optimization is facilitated, the reliability of communication is improved, and communication interruption is avoided.

Description

Method and apparatus for wireless communication

Technical Field

The present invention relates to a transmission method and apparatus in a wireless communication system, and in particular, to a method and apparatus for optimizing a network in communication, improving service quality, relaying communication, and the like.

Background

Future wireless communication systems have more and more diversified application scenes, and different application scenes have different performance requirements on the system. To meet the different performance requirements of various application scenarios, a New air interface technology (NR) is decided to be researched in the 3GPP (3 rd Generation Partner Project, third Generation partnership project) RAN (Radio Access Network ) #72 times of the whole meeting, and standardized Work is started on NR by the 3GPP RAN #75 times of the whole meeting through the WI (Work Item) of NR.

In communication, both LTE (Long Term Evolution ) and 5G NR can be involved in reliable accurate reception of information, optimized energy efficiency ratio, determination of information validity, flexible resource allocation, scalable system structure, efficient non-access layer information processing, lower service interruption and disconnection rate, support for low power consumption, which is significant for normal communication between a base station and a user equipment, reasonable scheduling of resources, balancing of system load, so that it can be said as high throughput, meeting communication requirements of various services, improving spectrum utilization, improving a base stone of service quality, whether embbe (ehanced Mobile BroadBand, enhanced mobile broadband), URLLC (Ultra Reliable Low Latency Communication, ultra-high reliability low latency communication) or eMTC (enhanced Machine Type Communication ) are indispensable. Meanwhile, in the internet of things in the field of IIoT (Industrial Internet of Things), in V2X (vehicle to X) communication (Device to Device) in the field of industry, in communication of unlicensed spectrum, in monitoring of user communication quality, in network planning optimization, in NTN (Non Territerial Network, non-terrestrial network communication), in TN (Territerial Network, terrestrial network communication), in dual connectivity (Dual connectivity) system, in radio resource management and codebook selection of multiple antennas, in signaling design, neighbor management, service management, and beamforming, there is a wide demand, and the transmission modes of information are broadcast and unicast, both transmission modes are indispensable for 5G system, because they are very helpful to meet the above demands.

With the increasing of the scene and complexity of the system, the system has higher requirements on reducing the interruption rate, reducing the time delay, enhancing the reliability, enhancing the stability of the system, and the flexibility of the service, and saving the power, and meanwhile, the compatibility among different versions of different systems needs to be considered in the system design.

The 3GPP standardization organization performs related standardization work for 5G to form a series of standards, and the standard content can be referred to:

https://www.3gpp.org/ftp/Specs/archive/38_series/38.304/38304-g40.zip

https://www.3gpp.org/ftp/Specs/archive/38_series/38.211/38211-g50.zip

https://www.3gpp.org/ftp/Specs/archive/38_series/38.213/38213-g50.zip

https://www.3gpp.org/ftp/Specs/archive/38_series/38.331/38331-g50.zip

disclosure of Invention

In various communication scenarios, the use of relays may be involved, for example, when one UE is not within the coverage area of a cell, the network may be accessed through a relay, which may be another UE. The relay mainly comprises a layer 3 relay and a layer 2 relay (L2U 2N relay), which are used for providing network access service for a remote node (U2N remote UE) through a relay node, wherein the layer 3 relay is transparent to an access network, namely the remote UE only establishes connection with a core network, and the access network cannot identify whether data come from the remote node or the relay node; while layer 2 relay, remote node (U2 Nremote UE) and access network (RAN) have RRC connection, the access network can manage the remote node, and radio bearers can be established between the access network and the remote node. The relay may be another UE, and in a system supporting layer 2 relay, the UE may communicate with the network through an L2 relay UE (L2U 2N relay UE), that is, using an indirect path (direct path), or may communicate with the network directly without relay, that is, using a direct path (direct path). In some cases, such as signal degradation of the network, the remote node may transition from a direct path switch (path switch) to an indirect path; when the network signal becomes good, it can also switch from the indirect path to the direct path. Unlike a handover (handover), which occurs between two different cells, the path switching typically occurs in the same cell. If a radio link failure occurs immediately after the path switch, the network needs to record and analyze the cause of the failure to perform network optimization. For more accurate optimization, knowledge of the condition of the radio link is required, and exact knowledge of the cause of the radio link failure is required. If the radio link failure is not distinguished, it cannot be known whether the radio link failure is caused by the problem of the current cell or the improper switching, or whether the radio link failure is caused by the improper switching or the improper switching of the paths, for example, the threshold value or evaluation time of the path switching and the timing of the path switching may cause the improper path switching. Thus, the problem to be solved by the present application includes how to report appropriate failure information in the context of the relay, assisting the network in network optimization.

In view of the above problems, the present application provides a solution.

It should be noted that, in the case of no conflict, the embodiments in any node of the present application and the features in the embodiments may be applied to any other node. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.

The application discloses a method in a first node used for wireless communication, comprising:

receiving first signaling, wherein the first signaling comprises a reconfigurationWithSync; after the reconfigurationWithSync is applied, detecting a radio link failure of the first radio link;

transmitting a first message, wherein the first message adopts one of a first format or a second format; whether the first message is in the first format or the second format relates to whether the first signaling is for cell handover or path switching;

wherein the sending of the first message is later than the behavior detecting a radio link failure of the first radio link; the first message includes a first field having a value of rlf and being used to indicate a connection failure type; the first format and the second format are used to indicate connection failure information, respectively; the first wireless link is a direct path; the first signaling is an RRC message using SRB; the first message is an RRC message using SRB; sentence whether the first message is in the first format or in the second format has a meaning in relation to whether the first signaling is used for cell handover or path switching: when the first signaling is used for cell switching, the first message adopts the first format; when the first signaling is used for path conversion, the first message adopts the second format; only the latter of the first format and the second format is used to indicate an indirect path; the first message includes a second field used to indicate an elapsed time after the reconfiguration withsync is applied; the first message includes a third field that is used to indicate a cause of the radio link failure that triggered detection of the first radio link; the indirect path is communicated with the network through a relay; the direct path is not through a relay to communicate with the network.

As one embodiment, the problems to be solved by the present application include: in a scenario using L2 relay, when a radio link failure occurs, how to report the proper and accurate failure information to the network to assist in network optimization.

As one example, the benefits of the above method include: the possible misunderstanding of the network when processing the wireless link switching failure information is avoided; the L2 relay is supported, the interruption of communication is reduced, the service quality is improved, and the mobility and service continuity are better supported.

Specifically, according to one aspect of the present application, from the reconfigurationWithSync being applied to the time interval between the first radio link being detected as a radio link failure, the first node does not experience a radio connection failure.

Specifically, according to one aspect of the present application, the first message includes a failedPCellId field, where the failedPCellId field included in the first message is used to indicate an identity of a cell for which the first radio link is intended; the first format includes a previouspelellid field, and the previouspelellid field included in the first format is used for indicating an identity of a cell that sends the first signaling; the second format does not include a previouspelellid field.

In particular, according to one aspect of the application, the second format includes a fourth field that is used to indicate the relay with which the indirect path is associated.

Specifically, according to one aspect of the present application, the first message includes a failedPCellId field, where the failedPCellId field included in the first message is used to indicate an identity of a cell for which the first radio link is intended; the first format includes a previouspelellid field, and the previouspelellid field included in the first format is used for indicating an identity of a cell that sends the first signaling; whether the second format includes a previouspelellid field relates to whether the sender of the first signaling is a cell indicated by the failiedbecond field included in the first message; when the sender of the first signaling is not the cell indicated by the faildedpelellid field included in the first message, the second format includes a previouspelellid field, and the previouspelellid field included in the second format is used for indicating the identity of the cell sending the first signaling; when the sender of the first signaling is the cell indicated by the faildepcellid field included in the first message, the second format does not include a previousPCellId field.

Specifically, according to one aspect of the present application, the first message includes a failedPCellId field and a previousPCellId field, where the failedPCellId field included in the first message is used to indicate an identity of a cell for which the first radio link is intended; the previouspelellid field included in the first message is used for indicating an identity of a cell that sends the first signaling; the second format includes a fifth field that is used to indicate the indirect path.

Specifically, according to one aspect of the present application, the first message includes a first measurement result, where the first measurement result is a measurement result for a first relay, and the first relay is a relay corresponding to the indirect path.

Specifically, according to one aspect of the present application, before the act detects a radio link failure of the first radio link, receiving second signaling indicating a first conditional reconfiguration for the first cell; the first conditional reconfiguration includes a reconfigurationWithSync domain;

detecting a second radio link failure before the act detects a radio link failure of the first radio link; in response to detecting the second radio link failure, initiating an RRC reestablishment, the act initiating an RRC reestablishment including performing cell selection and the selected cell being the first cell; the first radio link is for the first cell;

Wherein the first message comprises an identity of the first cell; the act of initiating RRC reestablishment is performed before the act of detecting a radio link failure of the first radio link; the first signaling is for path switching.

Specifically, according to one aspect of the present application, the first node is an internet of things terminal.

Specifically, according to one aspect of the present application, the first node is a relay.

Specifically, according to one aspect of the present application, the first node is a U2N remote UE.

Specifically, according to one aspect of the present application, the first node is a vehicle-mounted terminal.

In particular, according to one aspect of the present application, the first node is an aircraft.

Specifically, according to one aspect of the present application, the first node is a mobile phone.

Specifically, according to one aspect of the present application, the first node is a communication terminal supporting multi-SIM card communication.

The application discloses a method in a second node for wireless communication, comprising:

transmitting a first signaling, wherein the first signaling comprises a reconfigurationWithSync;

the receiver of the first signaling detects a radio link failure of the first radio link after the reconfigurationWithSync is applied;

Receiving a first message, wherein the first message is in one of a first format or a second format; whether the first message is in the first format or the second format relates to whether the first signaling is for cell handover or path switching;

Specifically, according to an aspect of the present application, the second node is an internet of things terminal.

In particular, according to one aspect of the present application, the second node is a satellite.

Specifically, according to one aspect of the present application, the second node is a relay.

Specifically, according to an aspect of the present application, the second node is a vehicle-mounted terminal.

In particular, according to one aspect of the present application, the second node is an aircraft.

Specifically, according to one aspect of the present application, the second node is a base station.

Specifically, according to one aspect of the present application, the second node is a cell or group of cells.

Specifically, according to one aspect of the present application, the second node is a gateway.

Specifically, according to one aspect of the present application, the second node is an access point.

The application discloses a first node for wireless communication, comprising:

a first receiver that receives first signaling including reconfiguration withsync; after the reconfigurationWithSync is applied, detecting a radio link failure of the first radio link;

a first transmitter that transmits a first message in one of a first format or a second format; whether the first message is in the first format or the second format relates to whether the first signaling is for cell handover or path switching;

The application discloses a second node for wireless communication, comprising:

a second transmitter that transmits a first signaling including a reconfiguration wishsync;

a second receiver that receives a first message in one of a first format or a second format; whether the first message is in the first format or the second format relates to whether the first signaling is for cell handover or path switching;

As an example, compared to the conventional solution, the present application has the following advantages:

supporting network optimization when relaying, especially when relaying UEs using L2U 2N (UE to Network), may for example provide the network with rich and accurate information about radio link failure occurring before and after relay use.

Proper failure information can be indicated to the network to assist in network optimization when radio link failure occurs after path conversion, and misjudgment and false optimization of the network are avoided.

The method is beneficial to simplifying network design, reducing complexity and avoiding mutual interference among different optimization projects.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings in which:

FIG. 1 illustrates a flow chart for receiving first signaling and transmitting a first message according to one embodiment of the present application;

FIG. 2 shows a schematic diagram of a network architecture according to one embodiment of the present application;

fig. 3 shows a schematic diagram of an embodiment of a radio protocol architecture of a user plane and a control plane according to one embodiment of the present application;

FIG. 4 shows a schematic diagram of a first communication device and a second communication device according to one embodiment of the present application;

Fig. 5 shows a flow chart of wireless signal transmission according to one embodiment of the present application;

fig. 6 shows a flow chart of wireless signal transmission according to one embodiment of the present application;

figure 7 shows a schematic diagram of an RRC message according to one embodiment of the present application;

FIG. 8 illustrates a schematic diagram of a protocol stack for relaying communications according to one embodiment of the present application;

FIG. 9 illustrates a schematic diagram of path switching according to one embodiment of the present application;

FIG. 10 shows a schematic diagram in which only the latter of the first format and the second format is used to indicate an indirect path, according to one embodiment of the present application;

FIG. 11 illustrates a schematic diagram of a fourth domain being used to indicate relays associated with indirect paths according to one embodiment of the present application;

FIG. 12 shows a schematic diagram in which a fifth field is used to indicate an indirect path according to one embodiment of the present application;

FIG. 13 illustrates a schematic diagram of a processing device for use in a first node according to one embodiment of the present application;

fig. 14 illustrates a schematic diagram of a processing device for use in a second node according to one embodiment of the present application.

Description of the embodiments

The technical solution of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that, without conflict, the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other.

Example 1

Embodiment 1 illustrates a flow chart for receiving first signaling and transmitting a first message according to one embodiment of the present application, as shown in fig. 1. In fig. 1, each block represents a step, and it is emphasized that the order of the blocks in the drawing does not represent temporal relationships between the represented steps.

In embodiment 1, a first node in the present application receives a first signaling in step 101, and sends a flow chart of a first message in step 102;

wherein the first signaling comprises a reconfigurationWithSync; after the reconfigurationWithSync is applied, detecting a radio link failure of the first radio link; the first message is in one of a first format or a second format; whether the first message is in the first format or the second format relates to whether the first signaling is for cell handover or path switching; the sending of the first message is later than the behavior detecting a radio link failure of the first radio link; the first message includes a first field having a value of rlf and being used to indicate a connection failure type; the first format and the second format are used to indicate connection failure information, respectively; the first wireless link is a direct path; the first signaling is an RRC message using SRB; the first message is an RRC message using SRB; sentence whether the first message is in the first format or in the second format has a meaning in relation to whether the first signaling is used for cell handover or path switching: when the first signaling is used for cell switching, the first message adopts the first format; when the first signaling is used for path conversion, the first message adopts the second format; only the latter of the first format and the second format is used to indicate an indirect path; the first message includes a second field used to indicate an elapsed time after the reconfiguration withsync is applied; the first message includes a third field that is used to indicate a cause of the radio link failure that triggered detection of the first radio link; the indirect path is communicated with the network through a relay; the direct path is not through a relay to communicate with the network.

As an embodiment, the first node is a UE (User Equipment).

As an embodiment, the direct path refers to a UE-to-network transmission path, by which data is transmitted between a remote UE of the UE-to-network (U2N) and the network without being relayed.

As a sub-embodiment of this embodiment, the data includes higher layer data and signaling.

As a sub-embodiment of this embodiment, the data comprises RRC signaling.

As a sub-embodiment of this embodiment, the data comprises a string or block of bits.

As a sub-embodiment of this embodiment, the data includes only signaling or data carried by RBs (radio bearers).

As an embodiment, the indirect path refers to a UE-to-Network transmission path, through which data is transmitted between a remote UE of the UE-to-Network (U2N) and the Network via a relay UE of the UE-to-Network (U2N).

As a sub-embodiment of this embodiment, the data comprises RRC signaling.

As an embodiment, a wireless link is either the direct path or the indirect path.

As one embodiment, a U2N relay UE refers to a UE that provides functionality to support the connection of a U2N remote UE to a network.

As one embodiment, a U2N remote UE refers to a UE that needs to communicate with a network via a U2N relay UE.

As one embodiment, a U2N remote UE refers to a UE that communicates with a network supporting relay services.

As one embodiment, the U2N relay is a U2N relay UE.

As an embodiment, when unicast service is sent and received with the network, both the U2N relay and the U2N remote node are in RRC connected state.

As an embodiment, when the U2N remote UE is in an RRC idle state or an RRC inactive state, the U2N relay UE may be in any RRC state, including an RRC connected state, an RRC idle state, and an RRC inactive state.

As an embodiment, not transmitting over a direct path is equal to transmitting over an indirect path.

As one embodiment, not transmitting over a direct path includes transmitting over a relay.

As one embodiment, transmitting over a direct path is or includes transmitting without relaying.

As one embodiment, transmitting over the direct path is or includes forwarding without relaying.

As one embodiment, the U2N relay UE is a UE that provides functionality (functionality) support for a U2N remote UE to connect to a network.

As a sub-embodiment of this embodiment, the U2N relay UE is a UE.

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

As one embodiment, the U2N remote UE is a UE that communicates with the network through a U2N relay UE.

As one embodiment, a direct mode is a mode using the direct path.

As one embodiment, the direct mode is a mode in which the U2N remote UE communicates with the network using the direct path.

As an embodiment, the direct 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.

As one embodiment, the indirect (indirect) mode is a mode using the indirect path.

As an embodiment, the indirect mode is a mode using the indirect path.

As one embodiment, the direct mode is a mode in which the U2N remote UE communicates with the network using the indirect path.

As an embodiment, the direct 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.

As an embodiment, the serving cell is or includes a cell in which the UE resides. Performing a cell search includes the UE searching for a suitable (subscriber) cell of the selected PLMN (Public land mobile Network ) or SNPN (Stand-alone Non-Public Network), selecting the suitable cell to provide available service, monitoring a control channel of the suitable cell, which is defined as camping on the cell; that is, a camped cell, with respect to the UE, is the serving cell for the UE. Camping on one cell in RRC idle state or RRC inactive state has the following benefits: such that the UE may 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 may perform initial access on the control channel of the camping cell; the network may page to the UE; so that the UE can receive ETWS (Earthquake and Tsunami Warning System, earthquake tsunami warning system) and CMAS (Commercial Mobile Alert System ) notifications.

As an embodiment, for a U2N remote node, the serving cell is or includes the cell in which the U2N relay resides or is connected.

As an embodiment, for a UE in RRC connected state without CA/DC (carrier aggregation/dual connectivity ) configuration, only one serving cell includes the primary cell. For UEs in RRC connected state that are CA/DC (carrier aggregation/dual connectivity ) configured, the serving Cell is used to indicate the set of cells including the Special Cell (SpCell) and all the secondary cells. The Primary Cell (Primary Cell) is a MCG (Master Cell Group) Cell, operating on the Primary frequency, on which the UE performs an initial connection establishment procedure or initiates connection re-establishment. For the dual connectivity operation, the special Cell refers to a PCell (Primary Cell) of MCG or a PSCell (Primary SCG Cell) of SCG (Secondary Cell Group); if not dual connectivity operation, the special cell is referred to as a PCell.

As an example, the frequency at which the SCell (Secondary Cell, slave Cell) operates is the slave frequency.

For one embodiment, the individual content of the information element is referred to as a field.

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

As an embodiment, in MR-DC, the radio access node providing the control plane connection to the core network is a master node, which may be a master eNB, a master ng-eNB, or a master gNB.

As an embodiment, MCG refers to a set of serving cells associated with a primary node, including SpCell, and optionally, one or more scells, in MR-DC.

As an example, PCell is SpCell of MCG.

As one example, PSCell is the SpCell of SCG.

As an embodiment, in MR-DC, the radio access node that does not provide control plane connection to the core network, providing additional resources to the UE, is a slave node. The slave node may be an en-gNB, a slave ng-eNB or a slave gNB.

As an embodiment, in MR-DC, the set of serving cells associated with the slave node is SCG (secondary cell group, slave cell group), including SpCell and, optionally, one or more scells.

As one embodiment, the access layer function that enables V2X (Vehicle-to-evaluation) communications defined in 3GPP standard TS 23.285 is V2X sidelink communications (V2X sidelink communication), which occur between nearby UEs and which use E-UTRA technology but do not traverse network nodes.

As one embodiment, at least the access layer function enabling V2X (Vehicle-to-evaluation) communications defined in 3GPP standard TS 23.287 is NR sidelink communications (NR sidelink communication), where the NR sidelink communications occur between two or more UEs in close proximity and use NR technology but do not traverse a network node.

As one embodiment, the sidelink is a direct communication link between UE-to-UEs using sidelink resource allocation patterns, physical layer signals or channels, and physical layer procedures.

As an example, not or not within or outside of the coverage is equal to the coverage.

As one embodiment, the in-coverage is equal to the in-coverage.

As an embodiment, the out-of-coverage is equal to the out-of-coverage.

As an embodiment, the first node is a U2N remote node.

As an embodiment, PDCP entities corresponding to radio bearers terminated between the UE and the network are located within the UE and the network, respectively.

As an embodiment, the direct path is a communication link or channel or bearer used when transmitting over the direct path.

As an embodiment, the direct path transmission refers to that data carried by at least SRB (Signaling radio bearer ) between the UE and the network is not relayed or forwarded by other nodes.

As an embodiment, the direct path transmission refers to that RLC bearers associated with at least SRBs (Signaling radio bearer, signaling radio bearers) between the UE and the network are terminated by the UE and the network, respectively.

As an embodiment, the direct path transmission refers to that RLC entities associated with at least SRBs (Signaling radio bearer, signaling radio bearers) between the UE and the network are terminated by the UE and the network, respectively.

As an embodiment, the direct path transmission refers to that there is a direct communication link between the UE and the network.

As an embodiment, the direct path transmission refers to that a Uu interface exists between the UE and the network.

As an embodiment, the direct path transmission refers to a MAC layer where a Uu interface exists between the UE and the network, and the MAC layer of the Uu interface carries RRC signaling.

As an embodiment, the direct path transmission refers to a physical layer where a Uu interface exists between the UE and the network.

As an embodiment, the direct path transmission refers to the presence of a logical channel and/or a transport channel between the UE and the network.

As an embodiment, the indirect path is an indirect path or a communication link or channel or bearer used when transmitting over the indirect path.

As an embodiment, the indirect path transmission refers to the relay or forwarding of data carried by at least SRB (Signaling radio bearer ) between the UE and the network via other nodes.

As an embodiment, the indirect path transmission refers to that RLC bearers associated with at least SRB (Signaling radio bearer ) between the UE and the network are terminated by the UE and other nodes, other nodes and the network, respectively.

As an embodiment, the indirect path transmission refers to that RLC entities associated with at least SRBs (Signaling radio bearer, signaling radio bearers) between the UE and the network are terminated by the UE and other nodes, respectively, the other nodes and the network.

As an embodiment, the meaning of the phrase at least SRB includes at least one of { SRB0, SRB1, SRB2, SRB3 }.

As an embodiment, the phrase at least the meaning of SRB includes SRB and DRB (data radio bearer ).

As an embodiment, the indirect path transmission refers to that there is no direct communication link between the UE and the network.

As an embodiment, the indirect path transmission refers to a MAC layer where a Uu interface does not exist between the UE and the network.

As an embodiment, the indirect path transmission refers to a physical layer where no Uu interface exists between the UE and the network.

As an embodiment, the indirect path transmission refers to that there is no logical channel or no transmission channel between the UE and the network.

As an embodiment, the network comprises a Radio Access Network (RAN) and/or a serving cell and/or a base station.

As an embodiment, the phrase UE and the UE in the network comprise the first node.

As an embodiment, the other nodes comprise relay nodes or other UEs.

As one embodiment, the UE may send physical layer signaling to the network when using direct path transmission; when using indirect path transmission, the UE cannot send or directly send physical layer signaling to the network;

as one embodiment, the UE may send a MAC CE to the network when using direct path transmission; when indirect path transmission is used, the UE cannot send or directly send MAC CEs to the network;

as an embodiment, when direct path transmission is used, no other protocol layer exists between the PDCP layer and RLC layer of the first node; when indirect path transmission is used, there are other protocol layers between the PDCP layer and the RLC layer of the first node.

As a sub-embodiment of this embodiment, the other protocol layer is or comprises an adaptation layer.

As an embodiment, when using direct path transmission, the network directly schedules uplink transmission of the first node through DCI; when indirect path transmission is used, the network does not directly schedule uplink transmission of the first node through DCI.

As an embodiment, when using direct path transmission, the SRB of the first node is associated with an RLC entity and/or RLC layer and/or RLC bearer; when using indirect path transmission, the SRB of the first node is associated with the RLC entity of the PC5 interface.

As an embodiment, when using direct path transmission, there is a mapping relationship between the SRB of the first node and the RLC entity of the Uu interface; when indirect path transmission is used, the SRB of the first node has a mapping relation with the RLC entity of the PC5 interface.

As an embodiment, there is only a direct path or only an indirect path between the first node and the network.

As an embodiment, the meaning of converting from a direct path to an indirect path is: the indirect path starts to be used while the direct path stops to be used.

As an embodiment, the meaning of converting from a direct path to an indirect path is: the indirect path transmission is started while the direct path transmission is stopped.

As an embodiment, the meaning of converting from a direct path to an indirect path is: from direct path transmission to indirect path transmission.

As an embodiment, the meaning of converting from a direct path to an indirect path is: the first node associates an SRB with an RLC entity of a PC5 interface while releasing the RLC entity of the Uu interface associated with the SRB.

As an embodiment, the meaning of converting from a direct path to an indirect path is: the first node associates SRBs and DRBs with RLC entities of the PC5 interface while releasing RLC entities of the Uu interface associated with the SRBs and DRBs.

As an embodiment, the meaning of converting from an indirect path to a direct path is: the direct path starts to be used while the indirect path stops to be used.

As an embodiment, the meaning of converting from an indirect path to a direct path is: direct path transmission is started while indirect path transmission is stopped.

As an embodiment, the meaning of converting from an indirect path to a direct path is: from indirect path transmission to direct path transmission.

As an embodiment, the meaning of converting from an indirect path to a direct path is: 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.

As an embodiment, the meaning of converting from an indirect path to a direct path is: the first node releases all RLC entities of the PC5 interface associated with the DRB while associating the DRB with RLC entities of the Uu interface.

As an embodiment, when the first node uses an indirect path, the relay used by the indirect path is a first relay.

As an embodiment, the relay in the present application refers to a U2N relay UE.

As an embodiment, the first node is in an RRC connected state.

As an embodiment, the relay in the present application refers to an L2U 2N relay UE.

As an embodiment, the first signaling is transmitted through an SRB other than SRB 0.

As an embodiment, the first signaling uses SRB1 or SRB3.

As an embodiment, the first message uses SRB1 or SRB3.

As an embodiment, the first signaling is downlink signaling.

As an embodiment, the first message is an uplink message.

As an embodiment, the logical channel occupied by the first signaling is DCCH.

As an embodiment, the logical channel occupied by the first message is DCCH.

As an embodiment, the first signaling is sent by unicast.

As an embodiment, the first signaling is sent by a non-unicast manner.

As an embodiment, the first message is sent by unicast.

As an embodiment, the first message is sent by a non-unicast way.

As an embodiment, the first signaling is rrcrecon configuration.

As an embodiment, the first signaling comprises rrcrecon configuration.

As an embodiment, the first signaling is or includes a conditional reconfiguration.

As an embodiment, the first signaling is or includes rrcrecon configuration included in a configurational reconfiguration.

As an embodiment, the first signaling is or includes rrcrecon configuration included in condreconfigtoadmod.

As an embodiment, the first signaling includes RRCConnectionReconfiguration.

As an embodiment, the first message is or includes ueinfo information response.

As an embodiment, the first message is or includes ueassistance information.

As an embodiment, the first message is or includes a sidlinkueinformation.

As an embodiment, the first radio link is or includes an RB.

As an embodiment, the first radio link is or comprises an RLC bearer.

As one embodiment, the first wireless link is a wireless link of the first node to a network.

As one embodiment, the first wireless link includes the first node-to-relay wireless link and a relay-to-network wireless link.

As an embodiment, the format of the first message is the content of the first message.

As an embodiment, the format of the first message is a set of cells contained in the first message.

As one embodiment, the format of the first message is a set of domains contained in the first message.

As an embodiment, the format of the first message is a set of RRC IEs contained in the first message.

As an embodiment, the first message comprises a first identity.

As an embodiment, the first identity is an identity of the first node.

As an embodiment, the first identity is a C-RNTI of the first node.

As an embodiment, the first identity is an identity of a sender of the first signaling.

As an embodiment, the first identity is CGI or PCI.

As an embodiment, the first identity is an identity of the first relay, the first relay is a relay comprised by the second wireless link, and the second wireless link is a non-direct path.

As an embodiment, the first signaling comprises the first identity.

As an embodiment, the meaning of the phrase that the first message adopts the first format is or includes: the first message is sent in the first format.

As an embodiment, the meaning of the phrase that the first message adopts the first format is or includes: the content of the first message is the content of the first format.

As an embodiment, the meaning of the phrase that the first message adopts the first format is or includes: the domain of the first message is a domain included in the first format.

As an embodiment, the meaning of the phrase that the first message adopts the first format is or includes: the cells of the first message are cells comprised by the first format.

As an embodiment, the meaning of the phrase that the first message adopts the first format is or includes: the RRC IE of the first message is an RRC IE included in the first format.

As an embodiment, the meaning of the phrase that the first message adopts the first format is or includes: the first message includes all content and/or all fields of the first format.

As an embodiment, the meaning of the phrase that the first message adopts the first format is or includes: the first message includes the determined content and/or the determined field of the first format.

As an embodiment, the meaning of the phrase that the first message is in the second format is or includes: the first message is sent in the second format.

As an embodiment, the meaning of the phrase that the first message is in the second format is or includes: the content of the first message is the content of the second format.

As an embodiment, the meaning of the phrase that the first message is in the second format is or includes: the domain of the first message is a domain included in the second format.

As an embodiment, the meaning of the phrase that the first message is in the second format is or includes: the cells of the first message are cells comprised by the second format.

As an embodiment, the meaning of the phrase that the first message is in the second format is or includes: the RRC IE of the first message is an RRC IE included in the second format.

As an embodiment, the meaning of the phrase that the first message is in the second format is or includes: the first message includes all content and/or all fields of the second format.

As an embodiment, the meaning of the phrase that the first message is in the second format is or includes: the first message includes the determined content and/or the determined domain of the second format.

As an embodiment, the first message indicates a radio link handover failure whether the first format or the second format is used.

As one embodiment, when the first message uses the first format, the content of the radio link failure indicated by the first message is different from the content of the radio link failure indicated by the first message when the first message uses the second format.

As an embodiment, when the first message uses a domain comprised by the first format that is different from a domain comprised by the first message in the second format.

As an embodiment, when the first message uses the first format, the value of at least one domain included in the first message is different from the value of the corresponding domain when the first message adopts the second format.

As one embodiment, the first message includes first failure information indicating that the radio link handover of the first radio link failed.

As a sub-embodiment of this embodiment, the first failure information is rlf-Report.

As a sub-embodiment of this embodiment, the first failure information is sl-FailureList.

As a sub-embodiment of this embodiment, the first failure information is sl-FailureReport.

As a sub-embodiment of this embodiment, the first failure information is sl-delayfailurelist.

As a sub-embodiment of the embodiment, the name of the first failure information includes failure.

As a sub-embodiment of this embodiment, the name of the first failure information includes fail.

As a sub-embodiment of this embodiment, the name of the first failure information includes a relay.

As an embodiment, the first format and the second format are two RRC IEs having different names from each other.

As an embodiment, the first format and the second format are different in at least one domain.

As an embodiment, the first format and the second format have at least one field with different values.

As an embodiment, the second format of the first message explicitly indicates that the first signaling is related to a non-direct path.

As one embodiment, the time interval between the detection of a radio link handover failure of the first radio link and the transmission of the first message is less than 48 hours.

As one embodiment, the first format of the first message does not indicate an indirect path.

As one embodiment, the first format of the first message does not indicate that the first signaling uses an indirect path.

As one embodiment, the first format of the first message does not indicate a relay.

As one embodiment, the first format of the first message does not indicate a path switch.

As one embodiment, the first format of the first message indicates a cell handover.

As an embodiment, the first format of the first message indicates a PCell change.

As one embodiment, the first node stores first failure information in a first variable as a response to the detected radio link failure of the first radio link; the first variable is used to generate the first message; the first failure information is information related to the radio link failure of the first radio link.

As a sub-embodiment of this embodiment, the first failure information is stored in a rlf-Report field of the first variable.

As a sub-embodiment of this embodiment, the first failure information indicates the radio link failure of the first radio link.

As a sub-embodiment of this embodiment, the first failure information is generated by the first variable regardless of whether the first message is in the first format or the second format.

As a sub-embodiment of this embodiment, the first variable is VarRLF-Report.

As a sub-embodiment of this embodiment, the first message is a ueinfo information response message.

AS a sub-embodiment of this embodiment, the first failure information comprises and only comprises failure information related to the AS layer.

As a sub-embodiment of this embodiment, the first message includes a first sub-message and a second sub-message; the first sub-message and the second sub-message respectively comprise at least part of information of failure of executing the first signaling; the first sub-message is ueinfomation response and the second sub-message is sidlinkueinfomation.

As a sub-embodiment of this embodiment, the first failure information comprises an identity of the first node.

As a sub-embodiment of this embodiment, the first failure information comprises an identity of a serving cell of the first node.

As a sub-embodiment of this embodiment, the first failure information comprises an identity of a cell transmitting the first signaling.

As a sub-embodiment of this embodiment, the first failure information comprises a measurement result of a cell transmitting the first signaling.

As a sub-embodiment of this embodiment, the first failure information comprises a valid measurement result.

As a sub-embodiment of this embodiment, the first failure information comprises an identity of the target cell.

As a sub-embodiment of this embodiment, the first failure information includes plmn-identity list.

As a sub-embodiment of this embodiment, the first failure information includes measresuultlastservcell.

As a sub-embodiment of this embodiment, the first failure information includes rstdexresults.

As a sub-embodiment of this embodiment, the first failure information includes ssbrmconfigbitmap.

As a sub-embodiment of this embodiment, the first failure information includes measObjectNR.

As a sub-embodiment of this embodiment, the first failure information includes measResultListNR.

As a sub-embodiment of this embodiment, the first failure information includes connectionFailureType.

As a sub-embodiment of this embodiment, the first failure information includes rlf-Cause.

As a sub-embodiment of this embodiment, the first failure information includes locationInfo.

As an embodiment, the information about the radio link failure of the first radio link included in the first message is the same as the first failure information.

As an embodiment, the first relay is an L2U 2N relay.

As an embodiment, the first relay is a U2N relay UE.

As an embodiment, the first relay is a UE.

As one embodiment, the first relay is an L2U 2N relay UE.

As one embodiment, the first relay is an L2 relay.

As an embodiment, the first relay is a suitable relay.

As an embodiment, the reconfigurationWithSync included in the first signaling is applied after being received.

As an embodiment, the reconfigurationWithSync included in the first signaling is applied after the associated condition is satisfied.

As an embodiment, the reconfigurationWithSync is applied, i.e., the reconfigurationWithSync is performed.

As an embodiment, the reconfigurationWithSync is applied to include: the T316 timer is stopped.

As an embodiment, the reconfigurationWithSync is applied to include: and clearing the information in the first variable.

As an embodiment, the reconfigurationWithSync is applied to include: the T312 timer associated with the cell for which the reconfigurationwisync is directed is stopped.

As an embodiment, when the reconfigurationwisync is used for cell handover, the reconfigurationwisync is applied to include: starting a T304 timer associated with the cell for which the reconfigurationWithSync is directed, wherein the expiration value of the first timer is indicated by the reconfigurationWithSync.

As an embodiment, when the reconfigurationwisync is used for cell handover, the reconfigurationwisync is applied to include: synchronizing with the target SpCell targeted by the reconfigurationWithSync.

As an embodiment, when the reconfigurationwisync is used for cell handover, the reconfigurationwisync is applied to include: the BCCH (Broadcast Control Channel ) configuration of the target SpCell for which the reconfigurations wistsync is applied.

As an embodiment, when the reconfigurationwisync is used for cell handover, the reconfigurationwisync is applied to include: and acquiring MIB (Master Information Block ) of the target SpCell aimed by the reconfigurationWithSync.

As an embodiment, when the reconfigurationwisync is used for cell handover, the reconfigurationwisync is applied to include: and resetting the MAC entity of the cell group targeted by the reconfigurationWithSync.

As an embodiment, when the reconfigurationwisync is used for cell handover, the reconfigurationwisync is applied to include: and setting the C-RNTI of the first node for the cell group targeted by the reconfigurationWithSync as newUE-Identity included in the first signaling.

As an embodiment, when the reconfigurationwisync is used for cell handover, the reconfigurationwisync is applied to include: and configuring a lower layer according to the spCellConfigCommon domain included in the first signaling.

As an embodiment, when the reconfigurationWithSync is used for path conversion, the reconfigurationWithSync is applied to include: and executing signaling indicated by the sl-PathSwitchConfig domain included in the reconfigurationWithSync.

As an embodiment, when the reconfigurationWithSync is used for path conversion, the reconfigurationWithSync is applied to include: a first timer for the target L2U 2N relay UE is started, an expiration value of the first timer is indicated by the sl-pathswitch configuration field included in the reconfigurationWithSync, and the first timer is a timer other than the T304 timer.

As an embodiment, when the reconfigurationWithSync is used for path conversion, the reconfigurationWithSync is applied to include: and setting the C-RNTI of the first node as newUE-Identity included in the first signaling.

As an embodiment, when the reconfigurationWithSync is used for path switching, the first signaling includes an sl-PathSwitchConfig field.

As an embodiment, when the first signaling is used for cell handover, the reconfiguration wishsyn is used for cell handover; when the reconfigurationwisyn is used for cell handover, the first signaling is used for cell handover.

As an embodiment, when the first signaling is used for path switching, the reconfiguration wishsyn is used for path switching; when the reconfigurationwisyn is used for path conversion, the first signaling is used for path conversion.

As one embodiment, the act of detecting a radio link failure of the first radio link includes: the T310 timer expires.

As one embodiment, the act of detecting a radio link failure of the first radio link includes: the T312 timer expires.

As one embodiment, the act of detecting a radio link failure of the first radio link includes: the MAC layer indicates that random access problems occur.

As one embodiment, the act of detecting a radio link failure of the first radio link includes: the RLC layer indicates that the maximum number of retransmissions is reached.

As one embodiment, the act of detecting a radio link failure of the first radio link includes: the MAC layer indicates the occurrence of persistent upstream LBT (listen Before Talk ) failure.

As an embodiment, the first domain is a connectionFailureType domain.

As an embodiment, the optional values of the first field include hof and rlf, where setting hof indicates that a cell handover failure (handover failure) has occurred.

As an embodiment, the optional values of the first domain include hof and rlf, wherein setting rlf indicates that a radio link failure has occurred (radio link failure).

As an embodiment, the selectable value of the first field includes a value for indicating a path switch failure.

As an embodiment, the connection failure type refers to whether a cell handover fails or a radio link fails.

As an embodiment, the connection failure type includes a cell handover failure and a radio link failure.

As an embodiment, when the first domain is set to hof, the connection failure information indicated by the first format is or includes handover failure information.

As an embodiment, when the first domain is set to hof, the connection failure information indicated by the second format is or includes handover failure information.

As an embodiment, when the first domain indicates that the type of connection failure is path conversion failure, the connection failure information indicated by the first format is or includes path conversion failure information.

As an embodiment, when the first domain indicates that the type of connection failure is path conversion failure, the connection failure information indicated by the second format is or includes path conversion failure information.

As an embodiment, when the first domain is set to rlf, the connection failure information indicated by the first format is or includes radio link failure information.

As an embodiment, when the first domain is set to rlff, the connection failure information indicated by the second format is or includes radio link failure information.

As an embodiment, the phrase that the first signaling is used for cell handover means that: the first signaling indicates a cell handover.

As an embodiment, the phrase that the first signaling is used for cell handover means that: the first signaling is related to a cell handover.

As an embodiment, the meaning of the phrase that the first signaling is used for path switching is: the first signaling indicates a path switch.

As an embodiment, the meaning of the phrase that the first signaling is used for path switching is: the first signaling is related to path switching.

As an embodiment, the meaning of the phrase that the first signaling is used for path switching is: the reconfigurationWithSync included in the first signaling indicates path switching.

As an embodiment, the meaning of the phrase that the first signaling is used for path switching is: the first signaling includes a reconfigurationWithSync related to path switching.

As an embodiment, the first signaling is reconfigurationWithSync.

As an embodiment, the first signaling is used for either cell handover or path switching.

As one embodiment, the only latter of the first format and the second format of sentences is used to indicate the meaning of indirect paths comprising: the first format does not indicate an indirect path.

As one embodiment, the only latter of the first format and the second format of sentences is used to indicate the meaning of indirect paths comprising: the first format does not indicate an indirect path nor a direct path.

As one embodiment, the only latter of the first format and the second format of sentences is used to indicate the meaning of indirect paths comprising: the second format indicates an indirect path.

As one embodiment, the only latter of the first format and the second format of sentences is used to indicate the meaning of indirect paths comprising: the second format indicates indirect path transmission.

As one embodiment, the only latter of the first format and the second format of sentences is used to indicate the meaning of indirect paths comprising: the second format indicates that a relay is used.

As one embodiment, the only latter of the first format and the second format of sentences is used to indicate the meaning of indirect paths comprising: the second format indicates that the UE is relayed using L2U 2N.

As one embodiment, the only latter of the first format and the second format of sentences is used to indicate the meaning of indirect paths comprising: the second format indicates an L2U 2N relay UE.

As one embodiment, the only latter of the first format and the second format of sentences is used to indicate the meaning of indirect paths comprising: the second format indicates path conversion.

As one embodiment, the only latter of the first format and the second format of sentences is used to indicate the meaning of indirect paths comprising: the second format indicates information related to indirect path transmission and not needed for direct path transmission.

As one embodiment, the only latter of the first format and the second format of sentences is used to indicate the meaning of indirect paths comprising: the explicit indication of the second format is indirect path transmission; the first format explicitly indicates non-explicit indirect path transmission.

As one embodiment, the only latter of the first format and the second format of sentences is used to indicate the meaning of indirect paths comprising: the first format is applicable whether or not indirect path transmission is supported; the second format needs to support indirect path transmission.

As one embodiment, the second domain is timeConnFailure.

As an embodiment, the sentence the second field is used to indicate that the time elapsed after the reconfiguration wishsync was applied includes the time interval during which the reconfiguration wishsync comprised by the first signaling was performed to the present.

As an embodiment, the sentence the second field is used to indicate that the time elapsed after the reconfiguration wishsync is applied includes a time interval during which the reconfiguration wishsync included in the first signaling is performed to the record of the information about the radio link failure of the first radio link.

As an embodiment, the sentence the second field is used to indicate that the time elapsed after the reconfiguration withsync is applied includes a time interval during which the reconfiguration withsync comprised by the first signaling is performed until a radio link failure of the first radio link is detected.

As an embodiment, the sentence the second field is used to indicate that the time elapsed after the reconfiguration withsync was applied comprises the time elapsed after the first signaling was received.

As an embodiment, the sentence the second field is used to indicate that the time elapsed after the reconfiguration withsync was applied comprises the current time interval after the first signaling was received.

As an embodiment, the sentence the second field is used to indicate that the time elapsed after the reconfigurations wishsync was applied includes a time interval during which the information about the radio link failure to the first radio link after the first signaling was received is recorded.

As an embodiment, the sentence the second field is used to indicate that the time elapsed after the reconfigurations wishsync was applied includes a time interval after the first signaling was received until a radio link failure of the first radio link was detected.

As one example, the third domain is rlf-Cause.

As an embodiment, the selectable value of the third field includes one of t310-Expiry, beamFailureRecoveryFailure, randomAccessProblem, rlc-MaxNumRetx, bh-rlfRecoveryFailure, lbtFailure.

As an embodiment, the selectable values of the third field include values related to indirect paths.

As one embodiment, the radio connection failure includes a radio link failure and a cell handover failure.

As one embodiment, the radio connection failure includes a path switch failure.

As an embodiment, the first node does not receive signaling including the reconfigurationWithSync from the time interval between the reconfigurationWithSync being applied to the first radio link being detected as a radio link failure.

As an embodiment, the first node does not experience a radio connection failure from the time the reconfigurationWithSync is applied to the time interval between the first radio link being detected as a radio link failure.

As an embodiment, the first node does not experience a radio link failure from the time the reconfigurationWithSync is applied to the time interval between the first radio link being detected for a radio link failure.

As an embodiment, the first node does not experience a cell handover failure from the time when the reconfigurationWithSync is applied to the time interval between the first radio link being detected as a radio link failure.

As an embodiment, the first node does not experience a path switch failure from the time the reconfigurationWithSync is applied to the time interval between the first radio link being detected as a radio link failure.

As an embodiment, the first node does not experience a radio connection failure in a time interval between the first signaling being received and the first radio link being detected as a radio link failure.

As one embodiment, the first node does not experience a radio link failure in a time interval between the first signaling being received and the first radio link being detected as a radio link failure.

As an embodiment, the first node does not experience a cell handover failure in a time interval between the first signaling being received and the first radio link being detected as a radio link failure.

As an embodiment, the first node does not experience a path switch failure in a time interval between the first signaling being received and the first radio link being detected as a radio link failure.

As an embodiment, the first message includes a failedPCellId field, where the failedPCellId field included in the first message is used to indicate an identity of a cell for which the first radio link is intended; the first format includes a previouspelellid field, and the previouspelellid field included in the first format is used for indicating an identity of a cell that sends the first signaling; the second format does not include a previouspelellid field.

As a sub-embodiment of this embodiment, the cell for which the first radio link is directed refers to a radio link between the first node and the cell for which the first radio link is directed.

As a sub-embodiment of this embodiment, the identity of the cell for which the first radio link is intended comprises a global cell identity.

As a sub-embodiment of this embodiment, the first message comprises an identity of a cell for which the first radio link is intended comprising a global cell identity.

As a sub-embodiment of this embodiment, the first message comprises an identity of the cell for which the first radio link is intended, comprising a PLMN identity.

As a sub-embodiment of this embodiment, the first message comprises that the identity of the cell for which the first radio link is intended comprises a tracking area code.

As a sub-embodiment of this embodiment, the first message includes that the identity of the cell for which the first radio link is intended is indicated by the nrFailedPCellId field of failedPcellId.

As a sub-embodiment of this embodiment, the first message comprises an identity of the cell for which the first radio link is intended, comprising a physical cell identity and a carrier frequency of the cell for which the first radio link is intended.

As a sub-embodiment of this embodiment, the identity of the cell transmitting the first signaling comprises a global cell identity.

As a sub-embodiment of this embodiment, the identity of the cell transmitting the first signaling comprises a PLMN identity.

As a sub-embodiment of this embodiment, the identity of the cell transmitting the first signaling comprises a tracking area code.

As a sub-embodiment of this embodiment, the identity of the cell transmitting the first signaling is indicated by an nrPreviousPCellId field of the previousPCellId field.

As a sub-embodiment of this embodiment, the identity of the cell transmitting the first signaling comprises a physical cell identity and a carrier frequency of the cell transmitting the first signaling.

As a sub-embodiment of this embodiment, the second format includes a fourth field that is used to indicate the relay with which the indirect path is associated.

As an embodiment, the second format comprises a fourth field, which is used to indicate the relay with which the indirect path is associated.

As an embodiment, the first message includes a first measurement result, the first measurement result being a measurement result for a first relay, the first relay being a relay corresponding to the indirect path.

As a sub-embodiment of this embodiment, the first measurement result is a measurement result for a radio link other than the first radio link.

As a sub-embodiment of this embodiment, the first measurement result is a measurement result for an L2U 2N relay UE.

As a sub-embodiment of this embodiment, the first measurement result is a measurement result corresponding to a measurement object for the L2U 2N relay UE.

As an embodiment, the first message includes a failedPCellId field, where the failedPCellId field included in the first message is used to indicate an identity of a cell for which the first radio link is intended; the first format includes a previouspelellid field, and the previouspelellid field included in the first format is used for indicating an identity of a cell that sends the first signaling; whether the second format includes a previouspelellid field relates to whether the sender of the first signaling is a cell indicated by the failiedbecond field included in the first message; when the sender of the first signaling is not the cell indicated by the faildedpelellid field included in the first message, the second format includes a previouspelellid field, and the previouspelellid field included in the second format is used for indicating the identity of the cell sending the first signaling; when the sender of the first signaling is the cell indicated by the faildepcellid field included in the first message, the second format does not include a previousPCellId field.

As a sub-embodiment of this embodiment, the meaning of whether the sentence said second format comprises a previous pcellid field in relation to whether the sender of said first signaling is a cell indicated by said failiedcellid field comprised by said first message is: when the sender of the first signaling is not the cell indicated by the faildedpelellid field included in the first message, the second format includes a previouspelellid field, and the previouspelellid field included in the second format is used for indicating the identity of the cell sending the first signaling; when the sender of the first signaling is the cell indicated by the faildepcellid field included in the first message, the second format does not include a previousPCellId field.

As a sub-embodiment of this embodiment, the meaning of the sender of the first signaling other than the cell indicated by the failiedceleld field comprised by the first message is: the sender of the first signaling is a cell other than the cell indicated by the failiedbreld field included in the first message.

As a sub-embodiment of this embodiment, the meaning of the sender of the first signaling other than the cell indicated by the failiedceleld field comprised by the first message is: the PCell transmitting the first signaling is a cell other than the PCell indicated by the failiedbelellid field included in the first message.

As a sub-embodiment of this embodiment, the meaning that the sender of the first signaling is the cell indicated by the failiedceleld field included in the first message is: the cell indicated by the failiedbreld field included in the first message is the sender of the first signaling.

As a sub-embodiment of this embodiment, the meaning that the sender of the first signaling is the cell indicated by the failiedceleld field included in the first message is: the cell indicated by the failiedbreld field included in the first message is a producer of the first signaling.

As a sub-embodiment of this embodiment, the meaning that the sender of the first signaling is the cell indicated by the failiedceleld field included in the first message is: the PCell indicated by the failiedbhelid field included in the first message is a sender or generator of the first signaling.

As a sub-embodiment of this embodiment, the meaning that the sender of the first signaling is the cell indicated by the failiedceleld field included in the first message is: the PCell indicated by the failiedbhelid field included in the first message is a generator of rrcrecon configuration included in the reconconfiguration wisync included in the first signaling.

As a sub-embodiment of this embodiment, the meaning that the sender of the first signaling is the cell indicated by the failiedceleld field included in the first message is: the PCell indicated by the failiedbhelid field included in the first message is a generator of the first signaling but not a generator of the rrcrecnonconfiguration included in the included reconfigurationwisync of the first signaling.

As a sub-embodiment of this embodiment, the first message does not include a previousPCellId field used to indicate an indirect path.

As a sub-embodiment of this embodiment, the first message includes a failedPCellId field and a previouspcalid field, where the failedPCellId field included in the first message is used to indicate an identity of a cell for which the first radio link is intended; the previouspelellid field included in the first message is used for indicating an identity of a cell that sends the first signaling; the second format includes a fifth field that is used to indicate the indirect path.

As one embodiment, the first message includes a failedPCellId field and a previouspcalid field, where the failedPCellId field included in the first message is used to indicate an identity of a cell for which the first radio link is intended; the previouspelellid field included in the first message is used for indicating an identity of a cell that sends the first signaling; the second format includes a fifth field that is used to indicate the indirect path.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2.

Fig. 2 illustrates a diagram of a network architecture 200 of a 5g nr, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced, enhanced Long-Term Evolution) system. The 5G NR or LTE network architecture 200 may be referred to as 5GS (5G System)/EPS (Evolved Packet System ) 200 by some other suitable terminology. The 5GS/EPS 200 may include one or more UEs (User Equipment) 201, ng-RAN (next generation radio access network) 202,5GC (5G Core Network)/EPC (Evolved Packet Core, evolved packet core) 210, hss (Home Subscriber Server )/UDM (Unified Data Management, unified data management) 220, and internet service 230. The 5GS/EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, 5GS/EPS provides packet switched services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit switched services or other cellular networks. The NG-RAN includes NR node bs (gnbs) 203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gNB203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (transmit receive node), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5GC/EPC210. Examples of UE201 include a cellular telephone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a non-terrestrial base station communication, a satellite mobile communication, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, an drone, an aircraft, a narrowband internet of things device, a machine-type communication device, a land-based vehicle, an automobile, a wearable device, or any other similar functional device. Those of skill in the art may also refer to the UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. gNB203 is connected to 5GC/EPC210 through an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity )/AMF (Authentication Management Field, authentication management domain)/SMF (Session Management Function ) 211, other MME/AMF/SMF214, S-GW (Service Gateway)/UPF (User Plane Function ) 212, and P-GW (Packet Date Network Gateway, packet data network Gateway)/UPF 213. The MME/AMF/SMF211 is a control node that handles signaling between the UE201 and the 5GC/EPC210. In general, the MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet Protocal, internet protocol) packets are transported through the S-GW/UPF212, which S-GW/UPF212 itself is connected to the P-GW/UPF213. The P-GW provides UE IP address assignment as well as other functions. The P-GW/UPF213 is connected to the internet service 230. Internet services 230 include operator-corresponding internet protocol services, which may include, in particular, the internet, intranets, IMS (IP Multimedia Subsystem ) and packet-switched streaming services.

As an embodiment, the first node in the present application is UE201.

As one embodiment, the second node in this application is the gNB203.

As an embodiment, the radio link from the UE201 to the NR node B is an uplink.

As an embodiment, the radio link from the NR node B to the UE201 is a downlink.

As an embodiment, the UE201 supports relay transmission.

As an embodiment, the UE201 includes a mobile phone.

As one example, the UE201 is a vehicle including an automobile.

As an embodiment, the UE201 supports multiple SIM cards.

As an embodiment, the UE201 supports sidelink transmission.

As an embodiment, the UE201 supports MBS transmissions.

As an embodiment, the UE201 supports MBMS transmission.

As an embodiment, the gNB203 is a macro cell (marcocelluar) base station.

As one example, the gNB203 is a Micro Cell (Micro Cell) base station.

As an embodiment, the gNB203 is a PicoCell (PicoCell) base station.

As an embodiment, the gNB203 is a flying platform device.

As one embodiment, the gNB203 is a satellite device.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture according to one user plane and control plane of the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, fig. 3 shows the radio protocol architecture for the control plane 300 for a first node (UE, satellite or aerial in gNB or NTN) and a second node (gNB, satellite or aerial in UE or NTN), or between two UEs, in three layers: layer 1, layer 2 and layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY301. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the links between the first node and the second node and the two UEs through PHY301. The L2 layer 305 includes a MAC (Medium Access Control ) sublayer 302, an RLC (Radio Link Control, radio link layer control protocol) sublayer 303, and a 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. The PDCP sublayer 304 also provides security by ciphering the data packets and handover support for the first node between second nodes. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out of order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell among the first nodes. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control ) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second node and the first node. The PC5-S (PC 5 Signaling Protocol ) sublayer 307 is responsible for the processing of the signaling protocol of the PC5 interface. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer), the radio protocol architecture for the first node and the second node in the user plane 350 is substantially the same for the physical layer 351, PDCP sublayer 354 in the L2 layer 355, RLC sublayer 353 in the L2 layer 355 and MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. Also included in the L2 layer 355 in the user plane 350 is an SDAP (Service Data Adaptation Protocol ) sublayer 356, the SDAP sublayer 356 being responsible for mapping between QoS flows and data radio bearers (DRBs, data Radio Bearer) to support diversity of traffic. Although not shown, the first node may have several upper layers above the L2 layer 355. Further included are 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., remote UE, server, etc.).

As an embodiment, the radio protocol architecture in fig. 3 is applicable to the first node in the present application.

As an embodiment, the radio protocol architecture in fig. 3 is applicable to the second node in the present application.

As an embodiment, the first signaling in the present application is generated in RRC306.

As an embodiment, the second signaling in the present application is generated in RRC306.

As an embodiment, the first message in the present application is generated in RRC306.

Example 4

Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application, as shown in fig. 4. Fig. 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

The first communication device 450 includes a controller/processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, and optionally a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter/receiver 454, and an antenna 452.

The second communication device 410 includes a controller/processor 475, a memory 476, a receive processor 470, a transmit processor 416, and optionally a multi-antenna receive processor 472, a multi-antenna transmit processor 471, a transmitter/receiver 418, and an antenna 420.

In the transmission from the second communication device 410 to the first communication device 450, upper layer data packets from the core network are provided to a controller/processor 475 at the second communication device 410. The controller/processor 475 implements the functionality of the L2 (Layer-2) Layer. In the transmission from the second communication device 410 to the first communication device 450, a 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 retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., physical layer). Transmit processor 416 performs coding and interleaving to facilitate Forward Error Correction (FEC) at the second communication device 410, as well as 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-quadrature amplitude modulation (M-QAM). The multi-antenna transmit processor 471 digitally space-precodes the coded and modulated symbols, including codebook-based precoding and non-codebook-based precoding, and beamforming processing, to generate one or more spatial streams. A transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes with reference signals (e.g., pilots) in the time and/or frequency domain, and then uses an Inverse Fast Fourier Transform (IFFT) to generate a physical channel carrying the time domain multicarrier symbol stream. The multi-antenna transmit processor 471 then performs transmit analog precoding/beamforming operations on the time domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multiple antenna transmit processor 471 to a radio frequency stream and then provides it to a different antenna 420.

In a transmission from the second communication device 410 to the first communication device 450, each receiver 454 receives a signal at the first communication device 450 through its respective antenna 452. Each receiver 454 recovers information modulated onto a radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream that is provided to a receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various signal processing functions for the L1 layer. A multi-antenna receive processor 458 performs receive analog precoding/beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. The receive processor 456 converts the baseband multicarrier symbol stream after receiving the analog precoding/beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receive processor 456, wherein the reference signal is to be used for channel estimation, and the data signal is subjected to multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in a receive processor 456 and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals that were transmitted by the second communication device 410 on 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 the L2 layer. The controller/processor 459 may be associated with a memory 460 that stores program codes and data. Memory 460 may be referred to as a computer-readable medium. In the transmission from the second communication device 410 to the second communication device 450, the controller/processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the core network. The upper layer packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

In the transmission from the first communication device 450 to the second communication device 410, a data source 467 is used at the first communication device 450 to provide upper layer data packets to a controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. Similar to the transmit 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 allocations, implementing L2 layer functions for the user and control planes. The controller/processor 459 is also responsible for retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping, channel coding, and digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming, with the multi-antenna transmit processor 457 performing digital multi-antenna spatial precoding, after which the transmit processor 468 modulates the resulting spatial stream into a multi-carrier/single-carrier symbol stream, which is analog precoded/beamformed in the multi-antenna transmit processor 457 before being provided to the different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream and provides it to an antenna 452.

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 to baseband signals, and provides the baseband signals to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement the functions of the L1 layer. The controller/processor 475 implements L2 layer functions. The controller/processor 475 may be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, a controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the UE 450. Upper layer packets from the controller/processor 475 may be provided to the core network.

As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus of the first communication device 450 to at least: receiving first signaling, wherein the first signaling comprises a reconfigurationWithSync; after the reconfigurationWithSync is applied, detecting a radio link failure of the first radio link; transmitting a first message, wherein the first message adopts one of a first format or a second format; whether the first message is in the first format or the second format relates to whether the first signaling is for cell handover or path switching; wherein the sending of the first message is later than the behavior detecting a radio link failure of the first radio link; the first message includes a first field having a value of rlf and being used to indicate a connection failure type; the first format and the second format are used to indicate connection failure information, respectively; the first wireless link is a direct path; the first signaling is an RRC message using SRB; the first message is an RRC message using SRB; sentence whether the first message is in the first format or in the second format has a meaning in relation to whether the first signaling is used for cell handover or path switching: when the first signaling is used for cell switching, the first message adopts the first format; when the first signaling is used for path conversion, the first message adopts the second format; only the latter of the first format and the second format is used to indicate an indirect path; the first message includes a second field used to indicate an elapsed time after the reconfiguration withsync is applied; the first message includes a third field that is used to indicate a cause of the radio link failure that triggered detection of the first radio link; the indirect path is communicated with the network through a relay; the direct path is not through a relay to communicate with the network.

As an embodiment, the first communication device 450 includes: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: receiving first signaling, wherein the first signaling comprises a reconfigurationWithSync; after the reconfigurationWithSync is applied, detecting a radio link failure of the first radio link; transmitting a first message, wherein the first message adopts one of a first format or a second format; whether the first message is in the first format or the second format relates to whether the first signaling is for cell handover or path switching; wherein the sending of the first message is later than the behavior detecting a radio link failure of the first radio link; the first message includes a first field having a value of rlf and being used to indicate a connection failure type; the first format and the second format are used to indicate connection failure information, respectively; the first wireless link is a direct path; the first signaling is an RRC message using SRB; the first message is an RRC message using SRB; sentence whether the first message is in the first format or in the second format has a meaning in relation to whether the first signaling is used for cell handover or path switching: when the first signaling is used for cell switching, the first message adopts the first format; when the first signaling is used for path conversion, the first message adopts the second format; only the latter of the first format and the second format is used to indicate an indirect path; the first message includes a second field used to indicate an elapsed time after the reconfiguration withsync is applied; the first message includes a third field that is used to indicate a cause of the radio link failure that triggered detection of the first radio link; the indirect path is communicated with the network through a relay; the direct path is not through a relay to communicate with the network.

As an embodiment, the second communication device 410 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 410 means at least: transmitting a first signaling, wherein the first signaling comprises a reconfigurationWithSync; the receiver of the first signaling detects a radio link failure of the first radio link after the reconfigurationWithSync is applied; receiving a first message, wherein the first message is in one of a first format or a second format; whether the first message is in the first format or the second format relates to whether the first signaling is for cell handover or path switching; wherein the sending of the first message is later than the behavior detecting a radio link failure of the first radio link; the first message includes a first field having a value of rlf and being used to indicate a connection failure type; the first format and the second format are used to indicate connection failure information, respectively; the first wireless link is a direct path; the first signaling is an RRC message using SRB; the first message is an RRC message using SRB; sentence whether the first message is in the first format or in the second format has a meaning in relation to whether the first signaling is used for cell handover or path switching: when the first signaling is used for cell switching, the first message adopts the first format; when the first signaling is used for path conversion, the first message adopts the second format; only the latter of the first format and the second format is used to indicate an indirect path; the first message includes a second field used to indicate an elapsed time after the reconfiguration withsync is applied; the first message includes a third field that is used to indicate a cause of the radio link failure that triggered detection of the first radio link; the indirect path is communicated with the network through a relay; the direct path is not through a relay to communicate with the network.

As an embodiment, the second communication device 410 apparatus includes: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: transmitting a first signaling, wherein the first signaling comprises a reconfigurationWithSync; the receiver of the first signaling detects a radio link failure of the first radio link after the reconfigurationWithSync is applied; receiving a first message, wherein the first message is in one of a first format or a second format; whether the first message is in the first format or the second format relates to whether the first signaling is for cell handover or path switching; wherein the sending of the first message is later than the behavior detecting a radio link failure of the first radio link; the first message includes a first field having a value of rlf and being used to indicate a connection failure type; the first format and the second format are used to indicate connection failure information, respectively; the first wireless link is a direct path; the first signaling is an RRC message using SRB; the first message is an RRC message using SRB; sentence whether the first message is in the first format or in the second format has a meaning in relation to whether the first signaling is used for cell handover or path switching: when the first signaling is used for cell switching, the first message adopts the first format; when the first signaling is used for path conversion, the first message adopts the second format; only the latter of the first format and the second format is used to indicate an indirect path; the first message includes a second field used to indicate an elapsed time after the reconfiguration withsync is applied; the first message includes a third field that is used to indicate a cause of the radio link failure that triggered detection of the first radio link; the indirect path is communicated with the network through a relay; the direct path is not through a relay to communicate with the network.

As an embodiment, the first communication device 450 corresponds to a first node in the present application.

As an embodiment, the second communication device 410 corresponds to a second node in the present application.

As an embodiment, the first communication device 450 is a UE.

As an embodiment, the first communication device 450 is an in-vehicle terminal.

As an embodiment, the second communication device 450 is a relay.

As an example, the second communication device 450 is a satellite.

As an example, the second communication device 450 is an aircraft.

As an embodiment, the second communication device 410 is a base station.

As an embodiment, the second communication device 410 is a relay.

As an embodiment, the second communication device 410 is a UE.

As an example, the second communication device 410 is a satellite.

As an example, the second communication device 410 is an aircraft.

As an example, a receiver 454 (including an antenna 452), a receive processor 456 and a controller/processor 459 are used for receiving the first signaling in the present application.

As an example, a receiver 454 (including an antenna 452), a receive processor 456 and a controller/processor 459 are used for receiving said second signaling in the present application.

As one example, a transmitter 454 (including an antenna 452), a transmit processor 468 and a controller/processor 459 are used to transmit the first message in this application.

As one example, a transmitter 418 (including an antenna 420), a transmit processor 416 and a controller/processor 475 are used to transmit the first signaling in the present application.

As one example, a transmitter 418 (including an antenna 420), a transmit processor 416 and a controller/processor 475 are used to transmit the second signaling in this application.

As an example, receiver 418 (including antenna 420), receive processor 470 and controller/processor 475 are used to receive the first message in this application.

Example 5

Embodiment 5 illustrates a wireless signal transmission flow diagram according to one embodiment of the present application, as shown in fig. 5. In fig. 5, U01 corresponds to a first node of the present application, U02 corresponds to a second node of the present application, and it is specifically stated that the order in this example is not limited to the order of signal transmission and implementation in the present application, where steps within F51 and F52 are optional.

For the followingFirst node U01Receiving a first signaling in step S5101; in step S5102, a radio link failure of the first radio link is detected; transmitting an RRC reestablishment request in step S5103; receiving RRC reestablishment signaling in step S5104; the first message is sent in step S5105.

For the followingSecond node U02Transmitting a first signaling in step S5201; receiving an RRC reestablishment request in step S5202; transmitting RRC reestablishment signaling in step S5203; the first message is received in step S5204.

In embodiment 5, the first signaling comprises a reconfigurationWithSync; after the reconfigurationWithSync is applied, detecting a radio link failure of the first radio link;

the first message is in one of a first format or a second format; whether the first message is in the first format or the second format relates to whether the first signaling is for cell handover or path switching;

In embodiment 5, F52, step S5204, is optional, meaning that the recipient of the first message is the second node U02 or a node other than the second node U02.

As an embodiment, the first node U01 is a U2N relay UE.

As an embodiment, the first node U01 is a U2N remote UE.

As an embodiment, the first node U01 is an NR ProSe U2N remote UE.

As an embodiment, the second node U02 is a base station.

As an embodiment, the second node U02 is a primary cell of the first node U01.

As an embodiment, the second node U02 is a master cell group of the first node U01.

As an embodiment, the first signaling indicates a domain related to path switch (path switch).

As an embodiment, when the first signaling uses direct path transmission, the first signaling is used to indicate cell handover.

As an embodiment, when the first signaling uses indirect path transmission, the first signaling is used to instruct cell handover or path switching.

As an embodiment, the first signaling is transmitted using a radio link other than the first radio link.

As an embodiment, the wireless link used by the first signaling comprises a sidelink.

As an embodiment, the first signaling is transmitted using an indirect path.

As an embodiment, the first node U01 sends a first feedback message as a response to performing the first signaling, where the first feedback message indicates that the first signaling is completed.

As a sub-embodiment of this embodiment, the first feedback message is rrcrecon configuration complete.

As a sub-embodiment of this embodiment, the first feedback message is transmitted via a direct path.

As a sub-embodiment of this embodiment, the first feedback message is transmitted over the first wireless link.

As an embodiment, the reception of the first signaling triggers the first node U01 to start a T304 timer.

As an embodiment, the execution or application of the first signaling triggers the first node U01 to start a T304 timer.

As an embodiment, the first node U01 starts a T304 timer accompanying the reception of the first signaling.

As an embodiment, the first node U01 starts a T304 timer accompanying the execution or application of the first signaling.

As an embodiment, the T304 timer starts after the first signaling is received.

As an embodiment, the first signaling is successfully performed.

As an embodiment, the first signaling is performed before step S5102 starts.

As an embodiment, step S5103 is performed later than step S5102, and no connection failure of the first wireless link is detected after step S5102 and before step S5103.

As an embodiment, the act detects a radio link failure of the first radio link, i.e. detects a radio link failure of the first radio link.

As an embodiment, in response to detecting the radio link failure of the first radio link, the first node U01 initiates an RRC reestablishment procedure, where the RRC reestablishment procedure includes step S5103, and sends an RRC reestablishment request.

As an embodiment, the RRC reestablishment request is an RRCReestablishmentRequest message.

As an embodiment, the RRC reestablishment request is an rrcconnectionreestibleshmentrequest message.

As an embodiment, the behavioural RRC reestablishment of the first node is directed to the second node U02.

As an embodiment, the RRC reestablishment request is directed to the second node U02.

As an embodiment, the RRC reestablishment request is directly sent to the second node U02 without being relayed.

As an embodiment, the RRC reestablishment request is sent to the second node U02 through a relay of the third node.

As an embodiment, the RRC reestablishment command request is sent to the first node U01 through a relay of the third node.

As an embodiment, the RRC reestablishment request includes an identity of the second node U02.

As an embodiment, the RRC reestablishment request includes an identity of the first node U01.

As an embodiment, the RRC reestablishment request is sent through a direct path.

As an embodiment, the RRC reestablishment request is sent through an indirect path.

As an embodiment, the RRC reestablishment signaling is rrcreestablischent.

As an embodiment, the RRC reestablishment signaling is rrcconnectionreestisistant.

As an embodiment, the RRC reestablishment signaling is RRCSetup.

As an embodiment, the RRC reestablishment signaling is RRCConnectionSetup.

As an embodiment, the RRC reestablishment request and the RRC reestablishment signaling are both transmitted using a direct path or are both transmitted using an indirect path.

As an embodiment, one of the RRC reestablishment request and the RRC reestablishment signaling uses direct path transmission, and the other uses indirect path transmission.

As an embodiment, the first node U01, after receiving the RRC reestablishment signaling, sends an RRC reestablishment complete message, where the RRC reestablishment complete message is used to confirm that RRC reestablishment is complete.

As a sub-embodiment of this embodiment, the RRC reestablishment complete message includes rrcsetup complete.

As a sub-embodiment of this embodiment, the RRC reestablishment complete message includes rrcrecon configuration complete.

As a sub-embodiment of this embodiment, the RRC reestablishment complete message indicates that there is available/valid (available) failure information.

As a sub-embodiment of this embodiment, the RRC reestablishment complete message includes an indication of available failure information when information about radio link failure of the first radio link is still available or valid.

As a sub-embodiment of this embodiment, the RRC reestablishment complete message includes a UE-MeasurementsAvailable indicating that there is connection failure information.

As a sub-embodiment of this embodiment, the RRC reestablishment complete message includes a UE-MeasurementsAvailable indicating that there is radio link failure information.

As a sub-embodiment of this embodiment, the RRC reestablishment complete message includes rlf-infoaavailable, and the rlf-infoaavailable indicates that there is path switch failure information.

As a sub-embodiment of this embodiment, when the first node U01 has or stores information about radio link failure of the first radio link, the RRC reestablishment complete message includes rlf-infoailable.

As an embodiment, the first node receives a first information request message, the first information request message including rlf-ReportReq, and the first node U01 sends the first message in response to receiving the first information request message.

As a sub-embodiment of one embodiment, the first information request message is a ueinfo request.

As a sub-embodiment of one embodiment, the first information request message is received later than step S5104 and earlier than step S5105.

As an embodiment, the first message is sent after the RRC reestablishment is completed.

As an embodiment, the first message is sent after the RRC establishment triggered by the RRC reestablishment is completed.

As an embodiment, the first message is sent to the second node U02 through a relay of the third node.

As an embodiment, the first message is sent directly to the second node U02.

As an embodiment, the third node is an L2U 2N relay UE.

As an embodiment, the third node is the first relay.

As an embodiment, the first signaling is forwarded to the first node U01 via the third node.

As an embodiment, the third node is a relay associated with an indirect path used by the first node U01.

As an embodiment, the first signaling comprises an identity of the third node.

As an embodiment, the first message comprises an identity of the third node.

As an embodiment, the second node U02 sends a second message.

As an embodiment, the second node U02 sends the second message after receiving the first message.

As an embodiment, the second message is a message on a base station to base station interface.

As a sub-embodiment of this embodiment, the base station to base station interface is or includes an Xn interface.

As a sub-embodiment of this embodiment, the base station to base station interface is or includes an X2 interface.

As an embodiment, the second message is a message on a base station to core network interface.

As a sub-embodiment of this embodiment, the base station to core network interface is or includes S1.

As a sub-embodiment of this embodiment, the base station to core network interface is or includes N3.

As a sub-embodiment of this embodiment, the base station to core network interface is or includes N2.

As an embodiment, the second message is not an RRC message.

As an embodiment, the second message is a NAS message.

As an embodiment, the recipient of the second message is a cell.

As an embodiment, the receiver of said second message is a core network device.

As an embodiment, the receiver of the second message is a neighbor cell of the first node U01.

As an embodiment, the second message is or includes a handover report.

As an embodiment, the second message is or includes a HO report.

As an embodiment, the second message is or comprises RLF report.

As an embodiment, the second message is or includes UE RLF report container.

As an embodiment, the second message is or includes FAILURE INDICATION.

As an embodiment, the first message is used to generate the second message.

As an embodiment, the second message comprises information about the radio link handover failure.

As an embodiment, the second message includes information from the first message related to the radio link handover failure.

As an embodiment, the second message is used to indicate that the radio link handover failed.

As an embodiment, the second message is used to indicate that the radio link handover failure is relay related.

As an embodiment, the second message comprises the identity of the second node U02.

As an embodiment, the second message comprises the identity of the third node.

As a sub-embodiment of this embodiment, the identity of the third node is an identity of a Uu interface of the third node.

As a sub-embodiment of this embodiment, the identity of the third node is a C-RNTI of the third node.

As a sub-embodiment of this embodiment, the identity of the third node is an identity of a NAS layer of the third node.

As a sub-embodiment of this embodiment, the identity of the third node is a sidelink related identity of the third node.

As a sub-embodiment of this embodiment, the identity of the third node is an identity of the third node for paging.

As an embodiment, the second message indicates whether the second wireless link is a direct path or an indirect path.

As an embodiment, the second message indicates that the radio link handover failure is a path switch failure.

As an embodiment, the second message indicates a serving cell of the third node.

As an embodiment, the second message indicates a PLMN of the third node.

As an embodiment, the second message indicates a tracking area of the third node.

As an embodiment, the receiver of the first message is the same as the cell for which the RRC reestablishment procedure is performed by the first node.

As an embodiment, the steps within F51 are directed to said second node U02.

As an embodiment, the steps within F51 are directed to cells other than said second node U02.

As an embodiment, the steps within F51 are directed to a primary cell other than the second node U02.

As one example, the steps within F51 and F52 occur simultaneously or do not occur simultaneously.

As an example, the steps in F51 and F52 are for the same PCell.

As one example, steps within F51 and steps within F52 use either both direct paths or both indirect paths.

As an embodiment, the steps in F51 and F52 use either both or neither of the forwarding by the third node.

As an embodiment, before the first message is sent, the first signaling is the most recent signaling including reconfigurationWithSync.

As an embodiment, before the first message is sent, the first signaling is the last signaling including a reconfigurationWithSync.

As an embodiment, the first signaling uses indirect path transmission, and the message and signaling in step F51 uses indirect path transmission, and the relay associated with or involved in the indirect path used by the first signaling is the same as the relay associated with or involved in the message and signaling in step F51.

As an embodiment, the first signaling uses indirect path transmission, and the message and signaling in the step F51 use indirect path transmission, and the relay associated with or involved in the indirect path used by the first signaling is different from the relay associated with or involved in the message and signaling in the step F51 use indirect path.

Example 6

Embodiment 6 illustrates a wireless signal transmission flow diagram according to one embodiment of the present application, as shown in fig. 6. In fig. 6, U11 corresponds to the first node of the present application, and it is specifically illustrated that the order in this example does not limit the signal transmission order and the order of implementation in the present application. Example 6 is based on example 5, and reference is made to example 5 for the parts of example 6 that are required but not illustrated.

For the followingFirst node U11Receiving a second signaling in step S6101; receiving a first signaling in step S6102; in step S6103, a radio link failure of the second radio link is detected; initiating RRC reestablishment in step S6104; in step S6105, a radio link failure of the first radio link is detected; the first message is sent in step S6106.

In embodiment 6, the first signaling includes reconfigurationWithSync; after the reconfigurationWithSync is applied, detecting a radio link failure of the first radio link;

As an embodiment, the first node U11 receives the second signaling before the behavior detects a radio link failure of the first radio link, the second signaling indicating a first conditional reconfiguration for the first cell; the first conditional reconfiguration includes a reconfigurationWithSync domain;

the first node U11 detects a second radio link failure before the behavior detects a radio link failure of the first radio link; in response to detecting the second radio link failure, initiating an RRC reestablishment, the act initiating an RRC reestablishment including performing cell selection and the selected cell being the first cell; the first radio link is for the first cell;

As an embodiment, the second signaling is received earlier than the first signaling.

As an embodiment, the second signaling is received later than the first signaling.

As an embodiment, the second signaling is sent by unicast.

As an embodiment, the second signaling is an RRC message.

As an embodiment, the second signaling is sent through SRB1 or SRB 3.

As an embodiment, the second signaling comprises an rrcrecon configuration message.

As an embodiment, the second signaling is or includes rrcrecon configuration included in condreconfigurto addmod included in rrcrecon configuration.

As an embodiment, the first conditional reconfiguration is condreconfigtoadmod.

As an embodiment, the first conditional reconfiguration pass-through container includes rrcrecon configuration and the rrcrecon configuration included includes reconfigurationWithSync.

As an embodiment, the first condition reconfiguration includes an execution condition that triggers execution of the first condition reconfiguration through rrcrecon configuration included in a container.

As an embodiment, the second wireless link is a direct path.

As an embodiment, the second wireless link is a non-direct path.

As an embodiment, the first node U11 detects a radio link failure of the second radio link due to expiration of a timer T310.

As an embodiment, the first node U11 detects a radio link failure of the second radio link due to expiration of a timer T312.

As an embodiment, the first node U11 detects a radio link failure of the second radio link due to the MAC layer indicating that a random access failure occurs.

As an embodiment, the first node U11 detects a radio link failure of the second radio link due to the MAC layer indicating that a beam restoration failure occurs.

As an embodiment, the first node U11 detects a radio link failure of the second radio link due to the MAC layer indicating that a persistent LBT failure occurs.

As an embodiment, the first node U11 detects a radio link failure of the second radio link due to the RLC layer indicating that the maximum number of retransmissions is reached.

As one embodiment, the act of initiating RRC reestablishment includes sending an RRC message related to RRC reestablishment.

As an embodiment, the first node U11 starts a T311 timer with the first node U11 initiating the RRC reestablishment.

As an embodiment, the first signaling instructs the first node U11 to perform path switching.

As an embodiment, the first signaling is transmitted over an indirect path.

As an embodiment, the direct path to which the first signaling indication is switched is the second wireless link.

As an embodiment, the first node successfully completes the RRC reestablishment of step S6104.

As an embodiment, the RRC reestablishment is an RRC procedure including at least one RRC message being transmitted.

As an embodiment, the RRC reestablishment includes sending an RRC reestablishment request.

As one embodiment, initiating RRC reestablishment in step S6104 includes performing at least one of cell selection and relay selection.

As an embodiment, initiating RRC reestablishment in step S6104 includes performing cell selection and finding that the first cell is a suitable cell

As an embodiment, the cell for which the first conditional reconfiguration is intended is the first cell.

As an embodiment, the first node U11 performs the first conditional reconfiguration with respect to the first cell in response to selecting the first cell in the RRC reestablishment procedure.

As an embodiment, the first node U11 performs the rrcrecon configuration included by a container in the first conditional reconfiguration for the first cell in response to selecting the first cell in the RRC reestablishment procedure.

As an embodiment, the identity of the SpCell indicated in the rrcrecon configuration included by the container in the first conditional reconfiguration is the identity of the first cell.

As an embodiment, the first node U11 successfully performs the rrcrecon configuration of the pair of the first cells included by the container in the first conditional reconfiguration.

As an embodiment, the radio link between the first node U11 to the first cell is the first radio link.

As an embodiment, the first node U11 detects a radio link failure of the first radio link after step S6104.

As an embodiment, the first node U11 initiates a second RRC reestablishment as a response to detecting a radio link failure of the first radio link.

As a sub-embodiment of this embodiment, the second RRC reestablishment initiated by the first node U11 is for the first cell.

As a sub-embodiment of this embodiment, the second RRC re-establishment initiated by the first node U11 is for a cell other than the first cell.

As a sub-embodiment of this embodiment, the second RRC reestablishment initiated by the first node U11 includes sending an RRC reestablishment request message.

As an embodiment, the first message uses the second format.

As an embodiment, the first message is transmitted using a direct path.

As an embodiment, the sender of the first signaling and the sender of the second signaling are the same.

As an embodiment, both the first signaling and the second signaling are transmitted using an indirect path.

Example 7

Embodiment 7 illustrates a schematic diagram of an RRC message according to an embodiment of the present application, as shown in fig. 7.

Field1, field2, field11, field12, field21 in FIG. 7 are all domains.

The format of the RRC message is based on the relevant specifications of ISO asn.1.

Information element1, information element2, information element11, and information element12 in fig. 7 are all RRC IEs.

For one embodiment, an RRC message includes one or more RRC IEs (Information Element), such as the RRCMessage-IEs of FIG. 7.

As an example, the RRCMessage-IEs in fig. 7 is an RRC IE.

As an example, the RRCMessage-IEs in fig. 7 are any IEs of an RRC message.

As an example, an RRC IE includes one or more fields, such as field1 and field2 included in the RRCMessage-IEs of fig. 7, such as Information.

As an example, the domain in fig. 7 is applicable to the first domain of the present application.

As an example, the domain in fig. 7 is applicable to the second domain of the present application.

As an example, the value of a field in the RRC message may be an RRC IE, for example, field1 in fig. 7 is the value of information element1.

As an example, one field in the RRC message carries or carries one RRC IE, for example, field1 carries or carries information element1 in fig. 7.

As an example, one field in the RRC message corresponds to one RRC IE, for example, field1 corresponds to information element1 in fig. 7.

As an embodiment, in the RRC message, different fields may correspond to, carry, or take the same value of the RRC IE, e.g. field11 and field21 are both set to information element11.

As an embodiment, the IE in the RRC message may include one or more levels.

For one embodiment, the IE in the RRC message may include one or more sub-IEs.

For one embodiment, the IE in the RRC message may include one or more grandchild IEs, and/or a deeper level IE.

As an example, the IE in the RRC message may include one or more sub-fields and/or Sun Yu, e.g., field1 is a sub-item of the RRCMessage-IEs, field11 is Sun Xiang of the RRCMessage-IEs; the sub-fields of the IEs in one RRC message may also include its own sub-field or Sun Yu, and so on.

As an embodiment, the meaning that the phrase the first domain is reconfigurationWithSync includes that the name of the first domain is "reconfigurationWithSync".

As an embodiment, the RRC IE carried or carried by the first domain is ReconfigurationWithSync.

As an embodiment, the first field is a child of the first signaling.

As an embodiment, the first domain is Sun Xiang of the first signaling.

As an embodiment, the first field is a child of Sun Xiang of the first signaling.

As an embodiment, the sub-item of one RRC IE is a first level item included in the one RRC IE.

As an embodiment, the Sun Xiang of one RRC IE is a second level item included in the one RRC IE.

As an embodiment, the sub-item of Sun Xiang of one RRC IE is a third level item included in the one RRC IE.

As one example, the fields in fig. 7 are applicable to the candidate format set of the present application, any format in the candidate format set being a field.

As an example, the domain in fig. 7 is applicable to the first format of the present application, which is a domain.

As an example, the domain of fig. 7 is applicable to the second format of the present application, and the first format is a domain.

As an example, the fields of fig. 7 are applicable to the first format of the present application, which includes at least one field.

As an example, the fields of fig. 7 are applicable to the second format of the present application, and the first format includes at least one field.

As an example, the RRC IE in fig. 7 applies to the candidate format set of the present application, any format in the candidate format set being an RRC IE.

As an example, the RRC IE in fig. 7 is applicable to the first format of the present application, which is an RRC IE.

As an example, the RRC IE in fig. 7 is applicable to the second format of the present application, which is an RRC IE.

As an embodiment, the RRC IE in fig. 7 is applicable to the first format of the present application, where the first format includes at least one RRC IE.

As an example, the RRC IE in fig. 7 is applicable to the second format of the present application, where the second format includes at least one RRC IE.

Example 8

Embodiment 8 illustrates a schematic diagram of a protocol stack for relaying communications according to one embodiment of the present application, as shown in fig. 8.

The protocol stack shown in fig. 8 is suitable for L2U 2N relay communication, and embodiment 8 is based on embodiment 3.

Fig. 8 (a) corresponds to a user plane protocol stack in L2U 2N relay communication; fig. 8 (b) corresponds to a control plane protocol stack in L2U 2N relay communication.

As an embodiment, the first relay is a relay when the first node uses an indirect path.

In embodiment 8, the PC5 interface is an interface between the first node and the first relay, and the PC5 interface-related protocol entity { PC5-ADAPT, PC5-RLC, PC5-MAC, PC5-PHY } terminates at the first node and the first relay; the Uu interface is an interface between the UE and the gNB, and protocol entities of the Uu interface are respectively terminated by the UE and the gNB.

As an embodiment, the first relay is a U2N relay UE, and the first relay provides an L2U 2N relay service to the first node before performing the first signaling.

As an embodiment, after performing the first signaling, the first relay no longer provides L2U 2N relay services to the first node.

As an embodiment, the first node and the first relay are both UEs.

As an embodiment, the gNB in fig. 8 corresponds to the second node of the present application.

As an embodiment, the protocol entity { Uu-ADAPT, uu-RLC, uu-MAC, uu-PHY } of the Uu interface terminates with the first relay and the gNB.

As an embodiment, in (a), the protocol entity { Uu-SDAP, uu-PDCP } of the Uu interface ends with the first node and the gNB, and 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.

As an embodiment, in (b), the protocol entity { Uu-RRC, uu-PDCP } of the Uu interface terminates with the first node and the gNB, and 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.

As an example, in (a), PC5-ADAPT corresponds to AP358 in fig. 3, PC5-RLC corresponds to RLC353 in fig. 3, PC5-MAC corresponds to MAC352 in fig. 3, and PC5-PHY corresponds to PHY351 in fig. 3.

As an example, in (a), uu-SDAP corresponds to SDAP356 in fig. 3, uu-PDCP corresponds to PDCP354 in fig. 3.

As an example, in (b), PC5-ADAPT corresponds to AP308 in fig. 3, PC5-RLC corresponds to RLC303 in fig. 3, PC5-MAC corresponds to MAC302 in fig. 3, and PC5-PHY corresponds to PHY301 in fig. 3.

As an example, in (b), uu-RRC corresponds to RRC306 in fig. 3 and Uu-PDCP corresponds to PDCP304 in fig. 3.

As an example, one cell of the gNB shown in fig. 8 is a serving cell of the first relay, and the first relay is in a non-RRC connected state.

As an example, one cell of the gNB in fig. 8 is the PCell of the first relay, and the first relay is in an RRC connected state.

As an example, one cell of the gNB in fig. 8 is the sender of the first signaling.

As one example, PC5-ADAPT is used only for specific RBs or messages or data.

As a sub-embodiment of this embodiment, the PC 5-accept layer is not used when the first relay forwards system information.

As an example, in fig. 8, the communication between the first node and the gNB uses an indirect path.

As an example, in fig. 8, the communication between the first node and the gNB uses a direct path.

As an embodiment, the first signaling is generated by Uu-RRC of the gNB in fig. 8 (b), which is received by Uu-RRC of the first node.

As an embodiment, the first signaling is transparent to the first medium and then to the second medium.

As an embodiment, the Uu-PDCP of the first node is associated with PC5-RLC, or with PC5-RLC by PC5-ADAPT when using an indirect path.

As an embodiment, when using the direct path, the first node will establish Uu-RLC, with which Uu-PDCP of the first node is associated.

As a sub-embodiment of this embodiment, the first node releases PC5-RLC after switching to the direct path.

As a sub-embodiment of this embodiment, the first node releases PC 5-accept after switching to the direct path.

As a sub-embodiment of this embodiment, the first node releases the PC5-MAC and PC5-PHY after switching to the direct path.

As a sub-embodiment of this embodiment, the first node no longer uses PC 5-accept after switching to the direct path.

As a sub-embodiment of this embodiment, there is no other protocol layer between Uu-PDCP and Uu-RLC of the first node after switching to the direct path.

Example 9

Embodiment 9 illustrates a schematic diagram of path switching according to one embodiment of the present application, as shown in fig. 9.

The first node in fig. 9 corresponds to the first node of the present application; the second node in fig. 9 corresponds to the second node of the present application; the third node in fig. 9 is an L2U 2N relay UE.

As an example, the fifth node in fig. 9 is the same as the second node, i.e. the same node.

As an embodiment, the fifth node in fig. 9 belongs to the same CU as the second node.

As an embodiment, the fifth node in fig. 9 belongs to the same gNB as the second node.

As an embodiment, the fifth node in fig. 9 is a node other than the second node.

As a sub-embodiment of this embodiment, the fifth node is a cell.

As a sub-embodiment of this embodiment, the fifth node is a cell group.

As a sub-embodiment of this embodiment, the fifth node is a base station.

As a sub-embodiment of this embodiment, the fifth node is a gNB.

As an embodiment, the first wireless link of the present application is a wireless link between the first node and the second node.

As an example, the wireless link from the fifth node to the first node via the third node in fig. 9 is a second wireless link.

As an embodiment, the second wireless link is a non-direct path.

As an embodiment, the second wireless link includes a secondary link between the first node and the third node, and also includes a wireless link between the third node and the fifth node.

As an embodiment, the relay included in the second wireless link refers to a relay used when transmitting data using the second wireless link.

As an embodiment, the relay included in the second wireless link refers to a relay in a sidelink included in the second wireless link.

As an embodiment, the relay included in the second wireless link means that the second wireless link is an indirect path, and the relay in the indirect path is a relay of the second wireless link.

As an embodiment, the relay comprised by the second radio link refers to the third node in fig. 9.

As one embodiment, switching from the first radio link to the second radio link includes starting use of the third node.

As an embodiment, the behavioural RRC reestablishment of the first node comprises an RRC reestablishment for the second node.

As an embodiment, the behavioural RRC reestablishment of the first node comprises an RRC reestablishment for the fifth node.

As an embodiment, the fifth node is a sender of the first signaling.

As an embodiment, the first signaling is forwarded by the third node.

As an embodiment, the first signaling indicates a transition from the second radio link to the first radio link.

As an example, the relay used in relation to the indirect path in the present application has the same meaning.

Example 10

Embodiment 10 illustrates a schematic diagram in which only the latter of the first and second formats is used to indicate indirect paths, as shown in fig. 10, according to one embodiment of the present application.

As an embodiment, the first format indicates a direct path.

As an embodiment, the first format does not indicate a direct path nor an indirect path.

As an embodiment, the first format does not indicate information about a path.

As an embodiment, the first format does not indicate path conversion.

As an embodiment, the first format indicates only the former of cell switching and path switching.

As an embodiment, the first format is applicable to UEs supporting indirect paths as well as UEs not supporting indirect paths.

As an embodiment, the first format includes a domain that is identical for UEs supporting an indirect path and UEs not supporting an indirect path.

As an embodiment, the first format includes a domain that is identical for UEs supporting non-path switching and UEs not supporting path switching.

As an embodiment, the first format includes a domain that is the same for UEs that support L2U 2N relay and UEs that do not support L2U 2N relay.

As an embodiment, the first message uses the first format whenever the first signaling is used for cell handover, whether L2U 2N relay is supported or not.

As an embodiment, the first format supports a UE before 3GPP protocol release 17.

As an embodiment, the second format is applicable only to UEs supporting L2U 2N relay.

As an embodiment, the second format is only applicable to UEs supporting path conversion.

As an embodiment, the second format is only applicable to UEs supporting indirect paths.

As an embodiment, the second format is applicable only to UEs of 3GPP protocol release 17 and beyond.

As an embodiment, the second format indicates an indirect path.

As an embodiment, the second format indicates only the latter of the direct path and the indirect path.

As an embodiment, the second format indicates at least the latter of a direct path and an indirect path.

As an embodiment, the second format includes a field for indicating an indirect path; the first format does not include the field included in the second format for indicating an indirect path.

As an embodiment, the second format includes a cell for indicating an indirect path; the first format does not include the cell included in the second format for indicating an indirect path.

As an embodiment, the second format includes a message indicating an indirect path; the first format does not include the information indicating an indirect path included in the second format.

As an embodiment, the second format indicates that the indirect path includes: the second format indicates that the first signaling is received over an indirect path.

As an embodiment, the second format indicates that the indirect path includes: the second format indicates that the first signaling is for path conversion.

As an embodiment, the second format indicates that the indirect path includes: the second format indicates that the reconfigurations withsync included in the first signaling is received through an indirect path.

As an embodiment, the second format indicates that the indirect path includes: the second format indicates that the reconfigurationWithSync included in the first signaling is for path conversion.

As an embodiment, the second format does not include the previousPCellId field to be used to indicate an indirect path.

Example 11

Embodiment 11 illustrates a schematic diagram in which a fourth domain is used to indicate relays associated with indirect paths according to one embodiment of the present application, as shown in fig. 11.

As an embodiment, the fourth domain comprises the identity of the relay.

As an embodiment, the fourth field indicates the first relay.

As an embodiment, the fourth domain includes an identity of the L2U 2N relay UE.

As an embodiment, the fourth domain includes Layer-2 ID of the L2U 2N relay UE.

As a sub-embodiment of this embodiment, the Layer-2 ID of the L2U 2N relay UE is Layer-2 ID of the L2U 2N relay UE included in the first node transmission measurement report.

As a sub-embodiment of this embodiment, the Layer-2 ID of the L2U 2N relay UE is Layer-2 ID included in the discovery message of the L2U 2N relay UE.

As an embodiment, the fourth domain indicates that an L2U 2N relay UE is used.

As an embodiment, the fourth domain comprises an adaptation layer identity of the L2U 2N relay UE.

As an embodiment, the fourth field includes a C-RNTI of the L2U 2N relay UE.

As an embodiment, the first signaling uses an indirect path and the fourth domain indicates the relay used or involved by the indirect path.

As an embodiment, the fourth domain indicates a relay forwarding the first signaling.

As an embodiment, the fourth domain indicates a relay forwarding the reconfiguration wishsync included in the first signaling.

As an embodiment, the fourth field indicates a relay indicated by a reconfiguration wishsync included in the first signaling.

As an embodiment, the fourth field indicates a relay indicated by the first signaling.

Example 12

Embodiment 12 illustrates a schematic diagram in which a fifth field is used to indicate an indirect path according to one embodiment of the present application, as shown in fig. 12.

As an embodiment, the fifth domain comprises the identity of the relay to which the indirect path relates.

As an embodiment, the fifth domain includes an identity of the L2U 2N relay UE.

As an embodiment, the fifth domain includes Layer-2 ID of the L2U 2N relay UE.

As an embodiment, the fifth domain indicates that an L2U 2N relay UE is used.

As an embodiment, the fifth domain includes an adaptation layer identity of the L2U 2N relay UE.

As an embodiment, the fifth field includes a C-RNTI of the L2U 2N relay UE.

As an embodiment, the first signaling uses an indirect path, and the fifth field indicates a relay with which the indirect path is associated.

As an embodiment, the first signaling uses an indirect path, and the fifth field indicates the indirect path.

As an embodiment, the first signaling uses an indirect path and the fifth field indicates that the first signaling is received using an indirect path.

As an embodiment, the first signaling uses an indirect path, and the fifth field indicates that a reconfigurationWithSync included in the first signaling uses an indirect path reception.

As an embodiment, the fifth field explicitly indicates an indirect path.

As an embodiment, the fifth field indicates a path switch to indicate the indirect path.

As an embodiment, the fifth field indicates that the first signaling is used for path switching.

As an embodiment, the fifth field indicates that reconfiguration withsync of the first signaling is used for path switching.

As an embodiment, the fifth field indicates a path switch.

As an embodiment, the fifth field indicates a relay indicated by the first signaling.

As an embodiment, the fifth field indicates a relay indicated by a reconfiguration wishsync included in the first signaling.

Example 13

Embodiment 13 illustrates a block diagram of a processing apparatus for use in a first node according to one embodiment of the present application; as shown in fig. 13. In fig. 13, the processing apparatus 1300 in the first node includes a first receiver 1301, a first processor 1302, and a first transmitter 1303. In the case of the embodiment of the present invention in which the sample is a solid,

a first receiver 1301 that receives first signaling including reconfiguration withsync; after the reconfigurationWithSync is applied, detecting a radio link failure of the first radio link;

a first transmitter 1303 that transmits a first message in one of a first format or a second format; whether the first message is in the first format or the second format relates to whether the first signaling is for cell handover or path switching;

As an embodiment, the first receiver 1301 receives a second signaling indicating a first conditional reconfiguration for the first cell before the act detects a radio link failure of the first radio link; the first conditional reconfiguration includes a reconfigurationWithSync domain;

the first processor 1302 detects a second radio link failure before the act detects a radio link failure of the first radio link; in response to detecting the second radio link failure, initiating an RRC reestablishment, the act initiating an RRC reestablishment including performing cell selection and the selected cell being the first cell; the first radio link is for the first cell;

As an embodiment, the first node is a User Equipment (UE).

As an embodiment, the first node is a terminal supporting a large delay difference.

As an embodiment, the first node is a terminal supporting NTN.

As an embodiment, the first node is an aircraft or a ship.

As an embodiment, the first node is a mobile phone or a vehicle terminal.

As an embodiment, the first node is a relay UE and/or a U2N remote UE.

As an embodiment, the first node is an internet of things terminal or an industrial internet of things terminal.

As an embodiment, the first node is a device supporting low latency and high reliability transmissions.

As an embodiment, the first node is a sidelink communication node.

As an example, the first receiver 1301 includes at least one of the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller/processor 459, the memory 460, or the data source 467 in example 4.

As an example, the first transmitter 1303 includes at least one of the antenna 452, the transmitter 454, the transmission processor 468, the multi-antenna transmission processor 457, the controller/processor 459, the memory 460, or the data source 467 in example 4.

Example 14

Embodiment 14 illustrates a block diagram of a processing apparatus for use in a second node according to one embodiment of the present application; as shown in fig. 14. In fig. 14, the processing means 1400 in the second node comprises a second receiver 1402 and a second transmitter 1401. In the case of the embodiment of the present invention in which the sample is a solid,

a second transmitter 1401 transmitting first signaling including reconfiguration wishsync;

a second receiver 1402 that receives a first message in one of a first format or a second format; whether the first message is in the first format or the second format relates to whether the first signaling is for cell handover or path switching;

As an embodiment, the second node is a satellite.

As an embodiment, the second node is a U2N Relay UE (user equipment).

As one embodiment, the second node is an IoT node.

As an embodiment, the second node is a wearable node.

As an embodiment, the second node is a base station.

As an embodiment, the second node is a relay.

As an embodiment, the second node is an access point.

As an embodiment, the second node is a multicast-enabled node.

As an example, the second transmitter 1401 includes at least one of the antenna 420, the transmitter 418, the transmission processor 416, the multi-antenna transmission processor 471, the controller/processor 475, and the memory 476 in example 4.

As an example, the second receiver 1402 includes at least one of the antenna 420, the receiver 418, the receive processor 470, the multi-antenna receive processor 472, the controller/processor 475, and the memory 476 of example 4.

Those of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described methods may be implemented by a program that instructs associated hardware, and the program may be stored on a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment may be implemented in a hardware form or may be implemented in a software functional module form, and the application is not limited to any specific combination of software and hardware. User equipment, terminals, and UEs in the present application include, but are not limited to, unmanned aerial vehicles, communication modules on unmanned aerial vehicles, remote control airplanes, aircraft, mini-planes, cell phones, tablet computers, notebooks, vehicle-mounted communication devices, wireless sensors, network cards, internet of things terminals, RFID terminals, NB-IoT terminals, MTC (Machine Type Communication ) terminals, eMTC (enhanced MTC) terminals, data cards, network cards, vehicle-mounted communication devices, low cost cell phones, low cost tablet computers, satellite communication devices, ship communication devices, NTN user devices, and other wireless communication devices. The base station or system device in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, a gNB (NR node B) NR node B, a TRP (Transmitter Receiver Point, transmitting/receiving node), an NTN base station, a satellite device, a flight platform device, and other wireless communication devices.

The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. Accordingly, the presently disclosed embodiments are considered in all respects to be illustrative and not restrictive. The scope of the invention is indicated by the appended claims rather than by the foregoing description, and all changes that come within the meaning and range of equivalents are intended to be embraced therein.

Claims

1. A first node for wireless communication, comprising:

2. The first node of claim 1, wherein the first node,

from the reconfigurationWithSync being applied to the time interval between the first radio link being detected as a radio link failure, the first node does not experience a radio connection failure.

3. The first node according to claim 1 or 2, characterized in that,

the first message includes a failedPCellId field, and the failedPCellId field included in the first message is used to indicate an identity of a cell for which the first wireless link is intended; the first format includes a previouspelellid field, and the previouspelellid field included in the first format is used for indicating an identity of a cell that sends the first signaling; the second format does not include a previouspelellid field.

4. A first node according to any one of the claims 1 to 3, characterized in that,

the second format includes a fourth field that is used to indicate a relay with which the indirect path is associated.

5. The first node according to claim 1 or 2, characterized in that,

the first message includes a failedPCellId field, and the failedPCellId field included in the first message is used to indicate an identity of a cell for which the first wireless link is intended; the first format includes a previouspelellid field, and the previouspelellid field included in the first format is used for indicating an identity of a cell that sends the first signaling; whether the second format includes a previouspelellid field relates to whether the sender of the first signaling is a cell indicated by the failiedbecond field included in the first message; when the sender of the first signaling is not the cell indicated by the faildedpelellid field included in the first message, the second format includes a previouspelellid field, and the previouspelellid field included in the second format is used for indicating the identity of the cell sending the first signaling; when the sender of the first signaling is the cell indicated by the faildepcellid field included in the first message, the second format does not include a previousPCellId field.

6. The first node according to any of the claims 1 or 2 or 5, characterized in that,

the first message comprises a failiedcelld domain and a previous pcelld domain, and the failiedcelld domain included in the first message is used for indicating the identity of a cell for which the first wireless link is aimed; the previouspelellid field included in the first message is used for indicating an identity of a cell that sends the first signaling; the second format includes a fifth field that is used to indicate the indirect path.

7. The first node according to any of the claims 1 to 6, characterized in that,

the first message includes a first measurement result, the first measurement result being a measurement result for a first relay, the first relay being a relay corresponding to the indirect path.

8. The first node according to any of claims 1 to 7, comprising:

the first receiver receiving a second signaling indicating a first conditional reconfiguration for the first cell before the act detects a radio link failure of the first radio link; the first conditional reconfiguration includes a reconfigurationWithSync domain;

A first processor detecting a second radio link failure before the act detects a radio link failure of the first radio link; in response to detecting the second radio link failure, initiating an RRC reestablishment, the act initiating an RRC reestablishment including performing cell selection and the selected cell being the first cell; the first radio link is for the first cell;

9. A second node for wireless communication, comprising:

10. A method in a first node for wireless communication, comprising:

11. A method in a second node for wireless communication, comprising: