CN116744475A

CN116744475A - Method and apparatus for wireless communication

Info

Publication number: CN116744475A
Application number: CN202210193458.8A
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: 2022-03-01
Filing date: 2022-03-01
Publication date: 2023-09-12

Abstract

A method and apparatus for wireless communication includes receiving first signaling; the first signaling is to indicate that a primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with a first radio link; the SRB1 is respectively associated with the first wireless link and the second wireless link; after receiving the first signaling, detecting that the first wireless link fails; in response to the act detecting that the first radio link failed, a first set of operations is performed relating to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay. The application is beneficial to network optimization through the first signaling and the first message, improves the reliability of communication and avoids communication interruption.

Description

Method and apparatus for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, 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/38.211/38211-g60.zip

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

https://www.3gpp.org/ftp/Specs/archive/38_series/38.331/38331-g60.zip

https://www.3gpp.org/ftp/Specs/archive/38_series/38.331/38323-g60.zip

disclosure of Invention

In various communication scenarios, the use of relay may be involved, for example, when one UE (User Equipment) is at the cell edge and coverage is poor, the network may be accessed through the relay, and the relay node 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 (U2N remote 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 scenarios, one UE may use both the direct path and the indirect path to achieve better reliability and higher throughput. The direct path and the indirect path are different in terms of radio resource management and network optimization. The direct and indirect paths, one without relaying and one with relaying, may provide traffic to multiple nodes, so the throughput, qoS, and functionality of two or more paths may not be the same, which is different from the traditional network architecture, and the solution must be adapted to this new network architecture. When one path fails, another path may be preferably used for communication, but in order to reduce load and improve bandwidth efficiency, the network may be configured to use only one path for communication for one bearer, where the one path is a main path, and the other path is configured but not used or not activated, so that in this case, how to smoothly switch when one path fails is a problem to be solved, and especially, the characteristics of relay communication are considered, that is, the relay node is directly connected with a main cell or a main cell group of a remote node through a Uu interface, so that unnecessary interruption is reduced, and signaling overhead is reduced. Of course the solution proposed by the present application may also solve other problems in the communication system, not limited to the above, e.g. either of the two paths may be cell group specific.

The present application provides a solution to the above-mentioned problems.

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

The application discloses a method used in a first node of wireless communication, comprising the following steps:

receiving a first signaling; the first signaling is to indicate that a primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with a first radio link; the SRB1 is respectively associated with the first wireless link and the second wireless link;

after receiving the first signaling, detecting that the first wireless link fails;

in response to the act detecting that the first wireless link failed, performing a first set of operations related to whether one of the first wireless link and the second wireless link is for a U2N (UE to Network) relay;

wherein at least one of the first radio link and the second radio link is cell group specific; the first set of operations includes sending a first message over at least the second wireless link, the first message using the SRB1, the first message being used to indicate that the first wireless link failed; the first set of operations includes setting at least a primary path of the SRB1 to be associated with the second wireless link; sentence the meaning of the first set of operations in relation to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay is: when both the first radio link and the second radio link are for a group of cells, the first set of operations includes starting a first timer, expiration of which is used to trigger connection reestablishment.

As one embodiment, the problems to be solved by the present application include: in the scenario of using L2 relay, especially when a direct path and an indirect path are used at the same time, failure occurs for one path, how to switch the bearer including SRB1 to another path, so as to ensure normal operation of communication, and meanwhile, consider requirements and characteristics of relay communication.

As one example, the benefits of the above method include: when L2 relay is supported, especially when multiple paths are simultaneously supported for communication with a network, when one path fails, the method provided by the application can switch the bearing including SRB1 to the other path for quick recovery, reduce recovery time delay, reduce interruption of communication, improve service quality, increase coverage and better support mobility and service continuity.

Specifically, according to one aspect of the present application, the meaning of the sentence whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay includes: when one of the first wireless link and the second wireless link is for a U2N relay, the first set of operations includes releasing the first wireless link; when the first radio link and the second radio link are both for a cell group, the first set of operations includes: suspending transmission of the first wireless link and resetting the MAC;

Wherein the first radio link is for U2N relay and the second radio link is for a cell group.

In particular, according to one aspect of the application, the first message relates to whether one of the first wireless link and the second wireless link is for a U2N relay;

wherein the sentence whether one of the first wireless link and the second wireless link is for a U2N relay has the meaning of: when one of the first wireless link and the second wireless link is for a U2N relay, the first message does not include a measurement result for the second wireless link; when the first radio link and the second radio link are both for a cell group, the first message includes a measurement result for the second radio link.

Specifically, according to one aspect of the present application, the meaning of the sentence whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay includes: when one of the first wireless link and the second wireless link is for a U2N relay, the first set of operations does not include stopping evaluation of a conditional reconfiguration for the first wireless link; when both the first radio link and the second radio link are for a group of cells, the first set of operations includes ceasing evaluation of conditional reconfiguration for the first radio link.

In particular, according to one aspect of the application, the first radio link is for U2N relay and the second radio link is for a primary cell group.

In particular, according to one aspect of the application, the second radio link is for U2N relay and the first radio link is for a primary cell group.

In particular, according to one aspect of the application, a second message is received on a sidelink, the generator of the second message being a U2N relay of the first node,

wherein the act of detecting that the first wireless link failed comprises receiving the second message; the second message is used to indicate one of a radio link failure occurred, a message including a reconfiguration wishsync field received or performed, and a cell reselection occurred; the first message is used to indicate a cause or type of failure of the first wireless link in relation to receiving the second message; the first wireless link is for a U2N relay.

In particular, according to one aspect of the application, second signaling is received, the second signaling being used to configure the first radio link;

wherein the behavior detecting that the first wireless link fails includes the second signaling failure; the phrase that the second signaling execution failed includes the first node not being compatible with one of at least a portion of a configuration indicated by the second signaling and a second timer period; the reception or execution of the second signaling is used to trigger the start of the second timer.

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

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

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

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

The application discloses a method used in a second node of wireless communication, comprising the following steps:

transmitting a first signaling; the first signaling is to indicate that a primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with a first radio link; the SRB1 is respectively associated with the first wireless link and the second wireless link;

a receiver of the first signaling, after receiving the first signaling, detecting that the first radio link fails, performing a first set of operations as a response to the behavior detecting that the first radio link fails, the first set of operations relating to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay;

Specifically, according to one aspect of the present application, second signaling is sent, the second signaling being used to configure the first radio link;

In particular, according to one aspect of the application, the second node is a base station.

In particular, according to one aspect of the application, the second node is an access point.

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

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

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

a first receiver that receives a first signaling; the first signaling is to indicate that a primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with a first radio link; the SRB1 is respectively associated with the first wireless link and the second wireless link;

the first receiver detects that the first wireless link fails after receiving the first signaling;

a first transmitter that, in response to the behavior detecting that the first radio link fails, performs a first set of operations relating to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay;

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

a second transmitter transmitting the first signaling; the first signaling is to indicate that a primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with a first radio link; the SRB1 is respectively associated with the first wireless link and the second wireless link;

As an embodiment, the present application has the following advantages over the conventional scheme:

support handling including recovery when bearers fail, especially when relaying UEs using L2U 2N (UE to Network).

When the direct path and the indirect path are simultaneously configured, the support is based on the processing after one of the paths fails, particularly, when one of the paths fails, the switching of the bearers including SRB1 can be realized when the other path is normal, the normal operation of communication is ensured, and the interruption of the communication is avoided.

The support network performs different configurations and treatments, i.e. functionally differentiated, of the radio links connecting the cell groups and the radio links connecting the relays, which is advantageous for simplifying the handling in case of failure, while at the same time increasing the throughput.

When one path, such as an indirect path, fails, a plurality of candidate paths can be rapidly switched by means of suspension, activation and the like, so that the continuity of service is ensured.

Support for radio bearers, especially bearer architectures where SRB1 uses split (split bearer) on direct and indirect paths.

The support signaling bearer uses the indirect path as the primary path.

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 of a first set of operations performed upon receiving first signaling, detecting a failure of a first wireless link, in accordance with one embodiment of the present application;

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

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

fig. 5 shows a flow chart of wireless signal transmission according to an embodiment of the application;

FIG. 6 shows a schematic diagram of a protocol stack for relaying communications according to one embodiment of the application;

fig. 7 shows a radio bearer diagram according to an embodiment of the application;

FIG. 8 shows a schematic diagram of a topology according to one embodiment of the application;

fig. 9 shows a schematic diagram in which a first message is used to indicate that a first wireless link fails, according to one embodiment of the application;

Fig. 10 shows a schematic diagram of a first message being used to indicate the cause or type of failure of a first radio link in relation to receiving a second message, according to one embodiment of the application;

FIG. 11 illustrates a schematic diagram of a processing device for use in a first node in accordance with one embodiment of the present application;

fig. 12 illustrates a schematic diagram of a processing arrangement for use in a second node according to an embodiment of the application.

Description of the embodiments

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

Example 1

Embodiment 1 illustrates a flowchart of a first set of operations performed in response to receiving a first signaling, detecting a failure of a first wireless link, as shown in fig. 1, in accordance with one embodiment of the present application. 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, detects that a first wireless link fails in step 102, and performs a first set of operations in step 103;

Wherein the first signaling is used to indicate that the primary path of SRB1 is associated with a first wireless link; the SRB1 is respectively associated with the first wireless link and the second wireless link; the first node detects that the first wireless link fails after receiving the first signaling; the first node, in response to the act detecting that the first wireless link failed, performing a first set of operations relating to whether one of the first wireless link and the second wireless link is for a U2N relay; at least one of the first radio link and the second radio link is cell group specific; the first set of operations includes sending a first message over at least the second wireless link, the first message using the SRB1, the first message being used to indicate that the first wireless link failed; the first set of operations includes setting at least a primary path of the SRB1 to be associated with the second wireless link; sentence the meaning of the first set of operations in relation to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay is: when both the first radio link and the second radio link are for a group of cells, the first set of operations includes starting a first timer, expiration of which is used to trigger connection reestablishment.

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

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

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, a direct path and/or an indirect path exists 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, the first node supports an indirect path to indirect path conversion.

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 first node in the present application does not use DC (dual connectivity ).

As an embodiment, the first node in the present application is not configured with DC (dual connectivity ).

As an embodiment, the first node in the present application has only one cell group.

As an embodiment, the first node in the present application has only one cell group, i.e. a Master Cell Group (MCG).

As an embodiment, the first node in the present application is not configured as a Slave Cell Group (SCG).

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

As an embodiment, the first node in the present application uses both a direct path and an indirect path.

As an embodiment, the first wireless link is or comprises a direct path.

As an embodiment, the first wireless link is or comprises an indirect path.

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

As an embodiment, the second wireless link is or comprises an indirect path.

As an embodiment, the direct path comprises said first wireless link.

As an embodiment, the indirect path comprises said first wireless link.

As an embodiment, the direct path comprises said second wireless link.

As an embodiment, the indirect path comprises said second wireless link.

As an embodiment, the first signaling uses the first radio link.

As an embodiment, the first signaling is used to configure the second radio link.

As an embodiment, the first signaling is RRC signaling.

As one embodiment, the first signaling includes SIB12.

As an embodiment, the first signaling comprises rrcrecon configuration.

As an embodiment, the first signaling includes ReconfigurationWithSync.

As an embodiment, the first signaling includes cellgroupconfig.

As an embodiment, the first signaling includes masterCellGroup.

As an embodiment, the first signaling does not include a second signaling.

As an embodiment, the first signaling comprises a configuration or reconfiguration of the first radio link.

As an embodiment, the first signaling comprises a configuration or reconfiguration of the second radio link.

As one embodiment, the first signaling indicates an RB associated with the first radio link.

As one embodiment, the first signaling indicates an RB associated with the second radio link.

As one embodiment, the first signaling indicates a logical channel identity associated with at least one RB associated with the first radio link.

As an embodiment, the first signaling indicates a configuration of PDCP corresponding to at least one RB associated with the first radio link.

As an embodiment, the first signaling indicates a configuration of PDCP corresponding to at least one RB associated with the second radio link.

As an embodiment, the first signaling indicates a configuration of RLC and/or MAC associated with at least one RB associated with the first radio link.

As an embodiment, the first signaling indicates a configuration of RLC and/or MAC associated with at least one RB associated with the second radio link.

As an embodiment, the first wireless link is or comprises a direct path used by the first node.

As an embodiment, the first wireless link is or comprises an indirect path used by the first node.

As an embodiment, the first wireless link is or comprises a wireless link between the first node and a network.

As an embodiment, the first radio link is or comprises a radio link between the first node and a base station.

As an embodiment, the first radio link is or comprises a radio link between the first node and a U2N relay UE.

As a sub-embodiment of this embodiment, the wireless link between the first node and the U2N relay UE is used for transmitting data and/or signalling between the first node and the network.

As an embodiment, the first radio link is or comprises a radio link between the first node and a group of cells.

As a sub-embodiment of this embodiment, the one cell group is MCG.

As a sub-embodiment of this embodiment, the one cell group is SCG.

As an embodiment, the first radio link is or comprises a radio bearer between the first node and a primary cell or primary cell.

As an embodiment, the first radio link is or comprises an RLC bearer between the first node and a primary cell group.

As an embodiment, the first radio link is or comprises a radio bearer between the first node and a primary cell or primary cell via a U2N relay UE.

As an embodiment, the first radio link is or comprises an RLC bearer between the first node and a U2N relay UE.

As a sub-embodiment of this embodiment, the RLC bearer between the first node and the U2N relay UE is associated with a radio bearer between the first node and a primary cell or group of primary cells.

As a sub-embodiment of this embodiment, the RLC bearer between the first node and the U2N relay UE is used to transmit data and/or signalling between the first node and the primary cell or primary cell group of the first node.

As a sub-embodiment of this embodiment, the first radio bearer comprises an RLC bearer between the U2N relay UE of the first node and a network for transmitting data of the first node.

As an embodiment, the first radio link is or comprises a sidelink radio link between the first node and a U2N relay UE.

As a sub-embodiment of this embodiment, the sidelink radio link between the first node and the U2N relay UE is used for transmitting data and/or signalling between the first node and the network.

As an embodiment, the second wireless link is or comprises a direct path used by the first node.

As an embodiment, the second wireless link is or comprises an indirect path used by the first node.

As an embodiment, the second wireless link is or comprises a wireless link between the first node and a network.

As an embodiment, the second wireless link is or comprises a wireless link between the first node and a base station.

As an embodiment, the second radio link is or comprises a radio link between the first node and a U2N relay UE.

As an embodiment, the second radio link is or comprises a radio link between the first node and a group of cells.

As a sub-embodiment of this embodiment, the one cell group is MCG.

As a sub-embodiment of this embodiment, the one cell group is SCG.

As an embodiment, the second radio link is or comprises a radio bearer between the first node and a primary cell or primary cell.

As an embodiment, the second radio link is or comprises an RLC bearer between the first node and a primary cell group.

As an embodiment, the second radio link is or comprises a radio bearer between the first node and a primary cell or primary cell via a U2N relay UE.

As an embodiment, the second radio link is or comprises an RLC bearer between the first node and a U2N relay UE.

As an embodiment, the second radio link is or comprises a sidelink radio link between the first node and a U2N relay UE.

As an embodiment, the first radio link is or comprises a channel between the first node and a primary cell or group of primary cells.

As an embodiment, the first radio link is or comprises a channel between the first node and a U2N relay UE.

As a sub-embodiment of this embodiment, the channel between the first node and the U2N relay UE is used for transmitting data and/or signalling between the first node and the network.

As a sub-embodiment of this embodiment, the channel between the first node and the U2N relay UE is used for transmitting information carried by the first node SRB 1.

As a sub-embodiment of this embodiment, the channel between the first node and the U2N relay UE is associated with the first node SRB 1.

As an embodiment, the second radio link is or comprises a channel between the first node and a primary cell or group of primary cells.

As an embodiment, the second wireless link is or includes a channel between the first node and a U2N relay UE.

As an example, the relays in the present application are all L2 (layer 2) relays.

As one embodiment, the radio bearer comprises an SRB.

As one embodiment, the radio bearer includes SRB1.

As an embodiment, the radio bearer comprises a DRB.

As an embodiment, the radio bearer comprises an MRB.

As an embodiment, the first signaling explicitly indicates that the SRB1 is associated with the first wireless link.

As an embodiment, the first signaling explicitly indicates that the SRB1 and the first radio link have a mapping relationship.

As an embodiment, the first signaling indicates that the data of the SRB1 is transmitted over the wireless link.

As an embodiment, the first signaling indicates that the data of the SRB1 has the radio link bearer.

As an embodiment, the first signaling indicates that the RLC entity with which the SRB1 is associated is for the first radio link.

As an embodiment, the first wireless link and the second wireless link correspond to different MACs.

As an embodiment, the first radio link and the second radio link correspond to different RLC bearers.

As an embodiment, the first radio link and the second radio link correspond to different air interfaces.

As an embodiment, the first wireless link and the second wireless link correspond to different antenna ports.

As an embodiment, the first radio link and the second radio link correspond to different RLC entities.

As an embodiment, the first wireless link and the second wireless link correspond to different paths.

As an embodiment, the first wireless link and the second wireless link correspond to different channels.

As an embodiment, the first radio link and the second radio link correspond to different cell groups.

As an embodiment, the first radio link and the second radio link correspond to different serving cells.

As an embodiment, the first radio link and the second radio link correspond to different base stations.

As an embodiment, the first radio link and the second radio link correspond to different U2N relay UEs.

As an embodiment, the phrase that the first signaling is used to indicate that the primary path of SRB1 is associated with the first wireless link means that: information on the SRB1 of the first node is transmitted over the first wireless link.

As an embodiment, the phrase that the first signaling is used to indicate that the primary path of SRB1 is associated with the first wireless link means that: the SRB1 of the first node is carried by the first wireless link.

As an embodiment, the phrase that the first signaling is used to indicate that the primary path of SRB1 is associated with the first wireless link means that: and the SRB1 of the first node has a mapping relation with the first wireless link.

As an embodiment, the phrase that the first signaling is used to indicate that the primary path of SRB1 is associated with the first wireless link means that: the primary path of the SRB1 of the first node is for the first wireless link.

As a sub-embodiment of this embodiment, the first radio link is an RLC bearer.

As a sub-embodiment of this embodiment, the first radio link is an RLC entity corresponding to one RLC bearer.

As an embodiment, the phrase that the first signaling is used to indicate that the primary path of SRB1 is associated with the first wireless link means that: the primary path of the SRB1 of the first node is for an RLC entity included or associated with the first radio link.

As an embodiment, the phrase that the first signaling is used to indicate that the primary path of SRB1 is associated with the first wireless link means that: the primary path of the SRB1 of the first node is for an RLC bearer included or associated with the first radio link.

As one embodiment, the phrase the first signaling includes an identity of a cell group for which the primary path of the SRB1 of the first node is intended.

As an embodiment, the phrase the first signaling indicates that one parameter of the primary path of the SRB1 of the first node is set to the RLC bearer configuration index associated with or corresponding to the first radio link.

As one embodiment, the phrase the first signaling includes an identity of a logical channel for which the primary path of the SRB1 of the first node is intended.

As an embodiment, the phrase said first signaling implicitly indicates the primary path of said SRB1 of said first node.

As a sub-embodiment of this embodiment, the cell group indicated by the first signaling includes only a master cell group, and the SRB1 of the first node is for the master cell group of the first node.

As a sub-embodiment of this embodiment, the first signaling indicates only the logical channel identity of the primary path of the SRB1, the cell group for which the SRB1 of the first node is the primary cell group of the first node.

As one embodiment, the first signaling indicates whether the primary path of the SRB1 of the first node is for a cell group or for a U2N relay UE.

As an embodiment, the first signaling indicates whether the primary path of the SRB1 of the first node is for a primary cell group or for a U2N relay UE.

As an embodiment, the first signaling indicates whether a direct path or an indirect path is used by a primary path of the SRB1 of the first node, and when the first signaling indicates that a direct path is used by a primary path of the SRB1 of the first node, the primary path of the SRB1 is for a primary cell group; when the first signaling indicates that the primary path of the SRB1 of the first node uses an indirect path, the primary path of the SRB1 is for a U2N relay UE.

As one embodiment, the first signaling indicates that SRB1 of the first node is associated with the second radio link.

As an embodiment, the phrase that the SRB1 is associated with the first and second wireless links, respectively, means that: and the SRB1 has a mapping relation with the first wireless link and the second wireless link.

As an embodiment, the phrase that the SRB1 is associated with the first and second wireless links, respectively, means that: the information transmitted by the SRB1 is carried over the first radio link and the second radio link.

As an embodiment, the phrase that the SRB1 is associated with the first and second wireless links, respectively, means that: the SRB1 is associated with at least two RLC entities, one of which is associated with the first radio link and the other of which is associated with the second radio link.

As an embodiment, the phrase that the SRB1 is associated with the first and second wireless links, respectively, means that: the SRB1 is associated with at least two RLC entities, one of which belongs to the first radio link and the other of which belongs to the second radio link.

As an embodiment, the phrase that the SRB1 is associated with the first and second wireless links, respectively, means that: the SRB1 is associated with at least two RLC entities, one of the two RLC entities being for the first radio link and the other of the two RLC entities being for the second radio link.

As an embodiment, the phrase that the SRB1 is associated with the first and second wireless links, respectively, means that: the SRB1 is associated with at least two RLC entities, one of the two RLC entities corresponding to the first radio link and the other of the two RLC entities corresponding to the second radio link.

As an embodiment, the phrase that the SRB1 is associated with the first and second wireless links, respectively, means that: the primary path of the SRB1 is the first radio link and the non-primary path of the SRB1 is the second radio link.

As an embodiment, the phrase that the SRB1 is associated with the first and second wireless links, respectively, means that: the primary path of the SRB1 is the second radio link and the non-primary path of the SRB1 is the first radio link.

As an embodiment, the phrase that SRB1 is associated with at least two RLC entities has the meaning: the information transmitted by the SRB1 is carried or processed by the two RLC entities.

As an embodiment, the phrase that SRB1 is associated with at least two RLC entities has the meaning: the SRB1 has a mapping relation with the two RLC entities.

As an embodiment, the phrase that SRB1 is associated with at least two RLC entities has the meaning: and the SRB1 has a mapping relation with the RLC bearing corresponding to the two RLC entities.

As an embodiment, the SRB1 of the first node is a split bearer (split bearer).

As an embodiment, the SRB1 of the first node is configured with PDCP duplication (PDCP-duplication).

As an embodiment, SRB1 of the first node is not configured for PDCP duplication.

As one embodiment, SRB1 of the first node is configured with PDCP duplication and the PDCP duplication is activated.

As one embodiment, SRB1 of the first node is configured with PDCP duplication and the PDCP duplication is not activated.

As an embodiment, the primary cell group of the first node includes only PCell.

As an embodiment, the primary cell group of the first node comprises at least one SCell.

As one embodiment, the act of detecting that the first wireless link failed includes: the expiration of the T310 timer is detected.

As one embodiment, the act of detecting that the first wireless link failed includes: the T310 timer expires with the cell group for which the first radio link is detected.

As one embodiment, the act of detecting that the first wireless link failed includes: the expiration of the T312 timer is detected.

As one embodiment, the act of detecting that the first wireless link failed includes: the expiration of a T312 timer with the cell group for which the first radio link is detected.

As one embodiment, the act of detecting that the first wireless link failed includes: the expiration of the T304 timer is detected.

As one embodiment, the act of detecting that the first wireless link failed includes: the T304 timer expires with the cell group for which the first radio link is detected.

As one embodiment, the act of detecting that the first wireless link failed includes: expiration of a first timer for path switch (Path switch) is detected.

As a sub-embodiment of this embodiment, the first timer is started as a response to receiving Reconfiguration with SYNC for path switch.

As one embodiment, the act of detecting that the first wireless link failed includes: a first timer associated with the first wireless link is detected to expire, the first timer being used for path conversion.

As one embodiment, the act of detecting that the first wireless link failed includes: and detecting that the first wireless link fails in wireless link.

As one embodiment, the act of detecting that the first wireless link failed includes: and detecting that the first wireless link fails in a secondary link wireless link.

As one embodiment, the act of detecting that the first wireless link failed includes: a sidelink RRC configuration incompatibility is detected, the first radio link being for a U2N relay UE.

As one embodiment, the act of detecting that the first wireless link failed includes: the expiration of the T400 timer is detected, and the first wireless link is for a U2N relay UE.

As one embodiment, the act of detecting that the first wireless link failed includes: an indication is received from the MAC that a maximum number of HARQ (Hybrid Automatic Repeat Request ) DTX (discontinous transmission, discontinuous transmission) is reached, the first radio link being for a U2N relay UE.

As one embodiment, the act of detecting that the first wireless link failed includes: an indication of a higher layer is detected indicating that the first wireless link is released or unavailable.

As one embodiment, the act of detecting that the first wireless link failed includes: an indication of a higher layer is detected indicating that a direct link associated with the first wireless link is released or unavailable.

As one embodiment, the act of detecting that the first wireless link failed includes: an indication of a higher layer is detected indicating that relay service is released or unavailable.

As one embodiment, the act of detecting that the first wireless link failed includes: a failure in security is detected.

As one embodiment, the act of detecting that the first wireless link failed includes: a first notification is received, the first notification being used to determine that a first wireless link cannot be used to transmit data from the first node to a network or that data sent over the first wireless link cannot be delivered to a base station or a primary cell group.

As a sub-embodiment of this embodiment, the sender of the first notification is a U2N relay UE of the first node.

As a sub-embodiment of this embodiment, the first notification is transmitted on a sidelink.

As a sub-embodiment of this embodiment, the first notification is a notifiationessagesidelink.

As a sub-embodiment of this embodiment, the first notification indicates that the U2N relay UE of the first node has failed a radio link.

As a sub-embodiment of this embodiment, the first notification indicates that the U2N relay UE of the first node receives an RRCreconfiguration message comprising a reconfigurationwisync.

As a sub-embodiment of this embodiment, the first notification indicates that the U2N relay UE of the first node receives an RRCreconfiguration message comprising a reconfigurationwisync related to MCG.

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

As one embodiment, the act of detecting that the first wireless link failed includes: an indication is received from the MAC that random access is problematic.

As one embodiment, the act of detecting that the first wireless link failed includes: an indication is received from the RLC entity that a maximum number of retransmissions has been reached.

As a sub-embodiment of this embodiment, the RLC entity indicating the maximum number of retransmissions is associated with SRB 1.

As one embodiment, the act of detecting that the first wireless link failed includes: an indication is received from the MAC of a persistent LBT (listen before talk ) failure problem.

As an embodiment, the first node is not configured with SRB3.

As an embodiment, the behavior performs a first set of operations in the sense that all operations in the first set of operations are performed.

As one embodiment, the meaning of the sentence of whether one of the first wireless link and the second wireless link is for a U2N relay comprises: the first set of operations is related to whether one of the first wireless link and the second wireless link is for a U2N relay UE.

As an embodiment, the meaning of the first wireless link for U2N relay includes: the first wireless link is a wireless link between the first node and a U2N relay UE.

As a sub-embodiment of this embodiment, the wireless link between the first node and the U2N relay UE is a sidelink wireless link.

As a sub-embodiment of this embodiment, the wireless link between the first node and the U2N relay UE is used to transmit signaling and/or data between the first node and the network.

As an embodiment, the meaning of the first wireless link for U2N relay includes: the first radio link is an RLC bearer between the first node and a U2N relay UE.

As a sub-embodiment of this embodiment, the RLC bearer between the first node and the U2N relay UE is used to transport data and/or signalling between the first node and the network.

As a sub-embodiment of this embodiment, the RLC bearer between the first node and the U2N relay UE is associated with SRB1 of the first node.

As a sub-embodiment of this embodiment, the RLC bearer between the first node and the U2N relay UE is a sidelink RLC bearer.

As a sub-embodiment of this embodiment, the RLC entity corresponding to the RLC bearer between the first node and the U2N relay UE is associated with SRB1 of the first node.

As an embodiment, the meaning of the first wireless link for U2N relay includes: the first wireless link is a channel between the first node and a U2N relay UE.

As a sub-embodiment of this embodiment, the channel between the first node and the U2N relay UE comprises a PSSCH (physical sidelink shared channel ).

As a sub-embodiment of this embodiment, the channel between the first node and the U2N relay UE is used for transmitting data and/or signaling between the first node and the network.

As a sub-embodiment of this embodiment, the channel between the first node and the U2N relay UE is associated with SRB1 of the first node.

As a sub-embodiment of this embodiment, the channel between the first node and the U2N relay UE comprises a logical channel.

As an embodiment, the meaning of the second wireless link for U2N relay includes: the second wireless link is a wireless link between the first node and a U2N relay UE.

As an embodiment, the meaning of the second wireless link for U2N relay includes: the second radio link is an RLC bearer between the first node and a U2N relay UE.

As an embodiment, the meaning of the second wireless link for U2N relay includes: the second wireless link is a channel between the first node and a U2N relay UE.

As an embodiment, the phrase that at least one of the first radio link and the second radio link is cell group specific includes that the first radio link is cell group specific and the second radio link is U2N relay UE specific.

As an embodiment, the phrase that at least one of the first radio link and the second radio link is cell group specific includes that the second radio link is cell group specific and the first radio link is U2N relay UE specific.

As an embodiment, the phrase that at least one of the first radio link and the second radio link is cell group specific includes that the second radio link is cell group specific and the first radio link is cell group specific.

As an embodiment, the phrase that the first radio link is for a group of cells means that: the first wireless link is a wireless link between the first node and an MCG.

As an embodiment, the phrase that the first radio link is for a group of cells means that: the first wireless link is a wireless link between the first node and an SCG.

As an embodiment, the phrase that the first radio link is for a group of cells means that: the first radio link is an RLC bearer between the first node and an MCG.

As an embodiment, the phrase that the first radio link is for a group of cells means that: the first wireless link is a channel between the first node and an MCG.

As an embodiment, the phrase that the first radio link is for a group of cells means that: the first wireless link is a physical channel or a logical channel between the first node and an MCG.

As an embodiment, the phrase that the first radio link is for a group of cells means that: the first radio link is a radio link of a Uu interface.

As an embodiment, the phrase that the first radio link is for a group of cells means that: the first wireless link is a primary link.

As an embodiment, the phrase that the second radio link is for a group of cells means that: the first wireless link is a wireless link between the first node and an MCG.

As an embodiment, the phrase that the second radio link is for a group of cells means that: the first wireless link is a wireless link between the first node and an SCG.

As an embodiment, the phrase that the second radio link is for a group of cells means that: the first radio link is an RLC bearer between the first node and an MCG.

As an embodiment, the phrase that the second radio link is for a group of cells means that: the first wireless link is a channel between the first node and an MCG.

As an embodiment, the phrase that the second radio link is for a group of cells means that: the first wireless link is a physical channel or a logical channel between the first node and an MCG.

As an embodiment, the phrase that the second radio link is for a group of cells means that: the first radio link is a radio link of a Uu interface.

As an embodiment, the phrase that the second radio link is for a group of cells means that: the first wireless link is a primary link.

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

As an embodiment, the first message comprises an rrcreestablischentrequest.

As an embodiment, the first message comprises ueassistance information.

As an embodiment, the first message includes a sidlinkiueinformation.

As an embodiment, the first message includes FailureInformation.

As an embodiment, the first message includes ueinfo response.

As an embodiment, the first message includes an ulinfomation transfer.

As an embodiment, the first message includes rrcrecon configuration complete.

As an embodiment, the meaning of the phrase that the first message uses the SRB1 is: the SRB used by the first message is SRB1.

As an embodiment, the meaning of the phrase that the first message uses the SRB1 is: SRB1 is used to carry the first message.

As an embodiment, the meaning of the phrase that the first message uses the SRB1 is: the first message can only be sent via SRB1.

As an embodiment, the phrase sending the first message over the second wireless link means that: the first message occupies the second wireless link.

As an embodiment, the phrase sending the first message over the second wireless link means that: the RLC bearer used by the first message is or belongs to the second radio link.

As an embodiment, the phrase sending the first message over the second wireless link means that: the RLC entity used by the first message is associated with the second radio link.

As an embodiment, the phrase sending the first message over the second wireless link means that: an RLC entity corresponding to the logical channel over which the first message is transmitted is associated with the second radio link.

As an embodiment, the first node sets the primary path of the SRB1 to be associated with the second radio link, and then sends the first message through the second radio link.

As one embodiment, the phrase setting the primary path of the SRB1 to the meaning associated with the second wireless link includes: and releasing the first wireless link as a main path of the SRB 1.

As one embodiment, the phrase setting the primary path of the SRB1 to the meaning associated with the second wireless link includes: the first radio link is no longer the primary path of the SRB 1.

As one embodiment, the phrase setting the primary path of the SRB1 to the meaning associated with the second wireless link includes: and setting the logic channel identity of the main path of the SRB1 as the second wireless link.

As one embodiment, the phrase setting the primary path of the SRB1 to the meaning associated with the second wireless link includes: and setting the logic channel identity of the main path of the SRB1 as the logic channel identity associated with or corresponding to the second wireless link.

As one embodiment, the phrase setting the primary path of the SRB1 to the meaning associated with the second wireless link includes: and setting the cell group identity of the main path of the SRB1 as the cell group identity associated with or corresponding to the second wireless link.

As one embodiment, the phrase setting the primary path of the SRB1 to the meaning associated with the second wireless link includes: and setting the identity of the U2N relay UE of the main path of the SRB1 as the identity of the U2N relay UE associated with or corresponding to the second wireless link.

As one embodiment, the phrase setting the primary path of the SRB1 to the meaning associated with the second wireless link includes: and setting one parameter of the main path of the SRB1 as an RLC bearing configuration index associated with or corresponding to the second wireless link.

As an embodiment, the phrase when both the first radio link and the second radio link are for a cell group means: the first wireless link is for MCG; the second wireless link is for MCG.

As an embodiment, the phrase when both the first radio link and the second radio link are for a cell group means: the first wireless link is for MCG; the second wireless link is for SCG.

As an embodiment, the phrase when both the first radio link and the second radio link are for a cell group means: the first wireless link is for SCG; the second wireless link is for MCG.

As one embodiment, the phrase starting the first timer includes starting and restarting the first timer.

As an embodiment, expiration of the first timer triggers the first node to perform the connection re-establishment.

As an embodiment, the connection re-establishment is or comprises an RRC re-establishment.

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

As an embodiment, the first signaling indicates an expiration value or a run time of the first timer.

As an embodiment, the first timer comprises T316.

As an embodiment, the first timer comprises T316a.

As one embodiment, the first timer includes T326.

As an embodiment, the first timer comprises T304.

As an embodiment, the first timer comprises T404.

As one embodiment, the first set of operations includes starting a first timer when one of the first wireless link and the second wireless link is for a U2N relay.

As an embodiment, whether one of the first radio link and the second radio link is for a U2N (UE to Network, user equipment to Network) relay is used to determine an expiration value of the first timer.

As an embodiment, when one of the first wireless link and the second wireless link is for a U2N relay, the first set of operations does not include starting any timer for triggering connection reestablishment.

As an embodiment, the above method has the advantage that even if the network does not reply to the first message or send a further indication, no connection re-establishment will take place, avoiding an interruption due to the connection re-establishment.

As one embodiment, the meaning of the sentence as to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay comprises: suspending transmission of the first wireless link and resetting a MAC when one of the first wireless link and the second wireless link is for a U2N relay; when the first radio link and the second radio link are both for a cell group, the first set of operations includes: suspending transmission of the first wireless link and resetting the MAC.

As a sub-embodiment of this embodiment, the behavior reset MAC is to reset a MAC associated with the first wireless link.

As one embodiment, the meaning of the sentence as to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay comprises: suspending transmission of the first wireless link and resetting a MAC when one of the first wireless link and the second wireless link is for a U2N relay; when the first radio link and the second radio link are both for a cell group, the first set of operations includes: releasing the first wireless link.

As a sub-embodiment of this embodiment, the first wireless link is for U2N relay.

As a sub-embodiment of this embodiment, the act of releasing the first wireless link includes releasing a PC5-RRC connection.

As a sub-embodiment of this embodiment, the act of releasing the first wireless link includes releasing a direct link.

As a sub-embodiment of this embodiment, the act of releasing the first wireless link includes releasing resources occupied by the first wireless link.

As a sub-embodiment of this embodiment, the act of releasing the first radio link comprises releasing a PUCCH on or associated with the first radio link.

As one embodiment, the meaning of the sentence as to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay comprises: suspending transmission of the first wireless link when one of the first wireless link and the second wireless link is for a U2N relay, and the first set of operations does not include resetting a MAC; when the first radio link and the second radio link are both for a cell group, the first set of operations includes: suspending transmission of the first wireless link and resetting the MAC.

As one embodiment, the first node is not configured for DAPS bearers.

The first radio link is for U2N relay and the second radio link is for a primary cell group.

The second radio link is for U2N relay and the first radio link is for a primary cell group.

The first radio link is for a cell group and the second radio link is for a cell group.

As one embodiment, the meaning of the sentence as to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay comprises: when one of the first wireless link and the second wireless link is for a U2N relay, the first set of operations includes releasing the first wireless link; when the first radio link and the second radio link are both for a cell group, the first set of operations includes: suspending transmission of the first wireless link and resetting the MAC;

As a sub-embodiment of this embodiment, the first radio link is for U2N relay UEs and the second radio link is for a primary cell group.

As a sub-embodiment of this embodiment, the first radio link is for U2N relay UEs and the second radio link is for cell groups.

As an embodiment, the first message relates to whether one of the first wireless link and the second wireless link is for a U2N relay;

As a sub-embodiment of this embodiment, the first radio link is for a primary cell group and the second radio link is for a cell group.

As a sub-embodiment of this embodiment, the first radio link is for a cell group and the second radio link is for a master cell group.

As a sub-embodiment of this embodiment, the phrase measurement for the second radio link refers to: and measuring results obtained according to the wireless signals of the second wireless link.

As a sub-embodiment of this embodiment, the phrase measurement for the second radio link refers to: a measurement result obtained by measuring the second radio link or a radio signal on the second radio link.

As a sub-embodiment of this embodiment, the phrase measurement for the second radio link refers to: and measuring a measurement result obtained by measuring the reference signal resource used or associated by the second wireless link.

As a sub-embodiment of this embodiment, the phrase measurement for the second radio link refers to: a measurement result for a first measurement object, the first measurement object being for the second wireless link.

As a sub-embodiment of this embodiment, the phrase measurement for the second radio link refers to: for the measurement result of the first measurement object, the name of the first measurement object includes SCG or MCG.

As a sub-embodiment of this embodiment, the sentence, the meaning of the first message regarding whether one of the first wireless link and the second wireless link is for a U2N relay, is: the first message does not include a measurement result between the first node and a U2N relay.

As a sub-embodiment of this embodiment, the first message comprises a measurement result for the first radio link.

As a sub-embodiment of this embodiment, the first message does not comprise a measurement result for the first radio link.

As an embodiment, the above embodiment has the advantage of taking into account the characteristics of relay communication, that is, the relay node cannot be switched into the primary cell group, the measurement result for the U2N relay cannot be used for evaluating cell switching, and resources can be saved by not including the measurement result related to the U2N relay.

As an embodiment, the above embodiment has the advantage that when both the first radio link and the second radio link are cell group specific, e.g. one is cell group specific, including measurements for cell group facilitating switching of cell group to cell group, or further network optimization.

As one embodiment, the meaning of the sentence as to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay comprises: when one of the first wireless link and the second wireless link is for a U2N relay, the first set of operations does not include stopping evaluation of a conditional reconfiguration for the first wireless link; when both the first radio link and the second radio link are for a group of cells, the first set of operations includes ceasing evaluation of conditional reconfiguration for the first radio link.

As a sub-embodiment of this embodiment, the phrase that the first set of operations does not include stopping the evaluation of the conditional reconfiguration for the first radio link means that: an evaluation of a conditional reconfiguration for the first radio link is maintained.

As a sub-embodiment of this embodiment, the phrase that the first set of operations does not include stopping the evaluation of the conditional reconfiguration for the first radio link means that: an evaluation of a conditional reconfiguration for the first radio link is performed or supported.

As a sub-embodiment of this embodiment, the phrase that the first set of operations does not include stopping the evaluation of the conditional reconfiguration for the first radio link means that: the evaluation of the conditional reconfiguration for the first radio link is not interfered with or changed.

As a sub-embodiment of this embodiment, the evaluating of the condition reconfiguration for the first radio link comprises evaluating whether a condition included in or associated with the condition reconfiguration of the first radio link is met, and if the condition included in or associated with the condition reconfiguration of the first radio link is met, performing the condition reconfiguration of the first radio link.

As a sub-embodiment of this embodiment, the conditional reconfiguration of the first radio link comprises an rrcrecon configuration message.

As a sub-embodiment of this embodiment, the conditional reconfiguration of the first radio link includes rrcr configuration signaling included in rrcr configuration messages nested in the rrcr configuration by containers.

As a sub-embodiment of this embodiment, the conditional reconfiguration of the first radio link comprises CHO (Conditional Handover ).

As a sub-embodiment of this embodiment, the conditional reconfiguration of the first radio link includes CPC (Conditional PSCell Change ).

As a sub-embodiment of this embodiment, the conditional reconfiguration of the first radio link includes conditional path switching.

As a sub-embodiment of this embodiment, the conditional reconfiguration of the first radio link includes Conditional Path Switch.

As a sub-embodiment of this embodiment, the conditional reconfiguration of the first radio link comprises condreconfigtoadmod.

As a sub-embodiment of this embodiment, the conditional reconfiguration of the first radio link comprises a conditional reconfiguration.

As a sub-embodiment of this embodiment, the first radio link is for a U2N relay UE; the second radio link is for a group of cells.

As a sub-embodiment of this embodiment, the second wireless link is for a U2N relay UE; the first radio link is for a group of cells.

As a sub-embodiment of this embodiment, the meaning of the phrase for conditional reconfiguration of the first radio link includes: the conditional reconfiguration for the first wireless link is included in a configuration for the first wireless link.

As a sub-embodiment of this embodiment, the meaning of the phrase for conditional reconfiguration of the first radio link includes: the conditional reconfiguration for the first radio link is for a primary cell group, the first radio link being a radio link between the first node and the primary cell group.

As a sub-embodiment of this embodiment, the meaning of the phrase for conditional reconfiguration of the first radio link includes: the conditional reconfiguration for the first wireless link is for a cell group, the first wireless link being a wireless link between the first node and the cell group.

As a sub-embodiment of this embodiment, the meaning of the phrase for conditional reconfiguration of the first radio link includes: the conditional reconfiguration for the first wireless link is for a U2N relay UE, the first wireless link being a wireless link between the first node and the U2N relay UE.

As a sub-embodiment of this embodiment, the meaning of the phrase for conditional reconfiguration of the first radio link includes: the conditional reconfiguration for the first radio link is for a U2N relay UE, the first radio link being a PC5 RRC connection between the first node and the U2N relay UE.

As a sub-embodiment of this embodiment, the meaning of the phrase for conditional reconfiguration of the first radio link includes: the conditional reconfiguration for the first wireless link is for a U2N relay UE, the first wireless link being a direct connection between the first node and the U2N relay UE.

As a sub-embodiment of this embodiment, the meaning of the phrase for conditional reconfiguration of the first radio link includes: the conditional reconfiguration for the first radio link is for a U2N relay UE, the first radio link being an RLC bearer between the first node and the U2N relay UE, the RLC bearer being associated with SRB 1.

As a sub-embodiment of this embodiment, the meaning of the phrase for conditional reconfiguration of the first radio link includes: the conditional reconfiguration for the first radio link is for a U2N relay UE, the first radio link being a radio channel between the first node and the U2N relay UE, the radio channel being for transmitting data and/or signaling on SRB 1.

As a sub-embodiment of this embodiment, the meaning of the phrase for conditional reconfiguration of the first radio link includes: the performing of the conditional reconfiguration for the first wireless link will change at least a portion of the configuration of the first wireless link.

As an example, the benefits of the above embodiment are: the method has the advantages that the characteristics of relay communication are considered, in relay communication, a remote node is connected with a main cell or a main cell group, the main cell or the main cell group can use direct path communication or indirect path communication, and both the direct path and the indirect path have complete functions, so that the failure of a first wireless link does not need forced recovery, the interruption of communication can be avoided, the initiation of connection reconstruction or the entering of an idle state is avoided, and the normal communication functions can be continuously maintained and used, including the evaluation and execution of condition reconfiguration.

As one embodiment, the T304 timer associated with the second wireless link is not running.

As one embodiment, a timer for path switch (path switch) associated with the second wireless link is not running.

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 (5 GSystem)/EPS (Evolved Packet System ) 200, or 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 disclosure 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 an embodiment, the base station of the first node in the present 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 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 of a user plane and a control plane according to the 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 5Signaling 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. SRBs can be regarded as services or interfaces provided by the PDCP layer to higher layers, e.g., RRC layer. In the NR system, SRBs include SRB1, SRB2, and SRB3, and also SRB4 when the sidelink communication is involved, which are used to transmit different types of control signaling, respectively. SRB is a bearer between the UE and the access network for transmitting control signaling including RRC signaling between the UE and the access network. SRB1 is of particular interest for UEs, where after each UE establishes an RRC connection, there is SRB1 for transmitting RRC signaling, most of the signaling is transmitted through SRB1, and if SRB1 is interrupted or unavailable, the UE must perform RRC reestablishment. SRB2 is typically used only for transmitting NAS signaling or security related signaling. The UE may not configure SRB3. In addition to emergency services, the UE must establish an RRC connection with the network for subsequent communications. 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.). For UEs involving relay services, its control plane may also include an adaptation sublayer SRAP (Sidelink Relay Adaptation Protocol, sidelink relay adaptation may be possible) 308, and its user plane may also include an adaptation sublayer SRAP358, the introduction of which may facilitate multiplexing and/or distinguishing data from multiple source UEs by lower layers, such as the MAC layer, e.g., the RLC layer.

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 message in the present application is generated in RRC306.

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 second message in the present application is generated in RRC306 or PC5-S307.

Example 4

Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the 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 a first signaling; the first signaling is to indicate that a primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with a first radio link; the SRB1 is respectively associated with the first wireless link and the second wireless link; after receiving the first signaling, detecting that the first wireless link fails; in response to the act detecting that the first wireless link failed, performing a first set of operations related to whether one of the first wireless link and the second wireless link is for a U2N (UE to Network) relay; wherein at least one of the first radio link and the second radio link is cell group specific; the first set of operations includes sending a first message over at least the second wireless link, the first message using the SRB1, the first message being used to indicate that the first wireless link failed; the first set of operations includes setting at least a primary path of the SRB1 to be associated with the second wireless link; sentence the meaning of the first set of operations in relation to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay is: when both the first radio link and the second radio link are for a group of cells, the first set of operations includes starting a first timer, expiration of which is used to trigger connection reestablishment.

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 a first signaling; the first signaling is to indicate that a primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with a first radio link; the SRB1 is respectively associated with the first wireless link and the second wireless link; after receiving the first signaling, detecting that the first wireless link fails; in response to the act detecting that the first wireless link failed, performing a first set of operations related to whether one of the first wireless link and the second wireless link is for a U2N (UE to Network) relay; wherein at least one of the first radio link and the second radio link is cell group specific; the first set of operations includes sending a first message over at least the second wireless link, the first message using the SRB1, the first message being used to indicate that the first wireless link failed; the first set of operations includes setting at least a primary path of the SRB1 to be associated with the second wireless link; sentence the meaning of the first set of operations in relation to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay is: when both the first radio link and the second radio link are for a group of cells, the first set of operations includes starting a first timer, expiration of which is used to trigger connection reestablishment.

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 to, with the at least one processor, cause the apparatus of the second communication device 410 to at least: transmitting a first signaling; the first signaling is to indicate that a primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with a first radio link; the SRB1 is respectively associated with the first wireless link and the second wireless link; a receiver of the first signaling, after receiving the first signaling, detecting that the first radio link fails, performing a first set of operations as a response to the behavior detecting that the first radio link fails, the first set of operations relating to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay; wherein at least one of the first radio link and the second radio link is cell group specific; the first set of operations includes sending a first message over at least the second wireless link, the first message using the SRB1, the first message being used to indicate that the first wireless link failed; the first set of operations includes setting at least a primary path of the SRB1 to be associated with the second wireless link; sentence the meaning of the first set of operations in relation to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay is: when both the first radio link and the second radio link are for a group of cells, the first set of operations includes starting a first timer, expiration of which is used to trigger connection reestablishment.

As one embodiment, the second communication device 410 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; the first signaling is to indicate that a primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with a first radio link; the SRB1 is respectively associated with the first wireless link and the second wireless link; a receiver of the first signaling, after receiving the first signaling, detecting that the first radio link fails, performing a first set of operations as a response to the behavior detecting that the first radio link fails, the first set of operations relating to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay; wherein at least one of the first radio link and the second radio link is cell group specific; the first set of operations includes sending a first message over at least the second wireless link, the first message using the SRB1, the first message being used to indicate that the first wireless link failed; the first set of operations includes setting at least a primary path of the SRB1 to be associated with the second wireless link; sentence the meaning of the first set of operations in relation to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay is: when both the first radio link and the second radio link are for a group of cells, the first set of operations includes starting a first timer, expiration of which is used to trigger connection reestablishment.

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 410 is a satellite.

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

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

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

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

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

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

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

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

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

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

Example 5

Embodiment 5 illustrates a wireless signal transmission flow diagram according to one embodiment of the application, as shown in fig. 5. In fig. 5, U01 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, where the steps in F51 are optional.

For the followingFirst node U01Receiving a first signaling in step S5101; receiving a second signaling in step S5102; receiving a second message in step S5103; in step S5104, failure of the first wireless link is detected; the first message is sent in step S5105.

For the followingSecond node U02Transmitting a first signaling in step S5201; transmitting a second signaling in step S5202; the second message is sent in step S5203.

For the followingThird node U03The first message is received in step S5301.

In embodiment 5, the first signaling is to indicate that the primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with a first radio link; the SRB1 is respectively associated with the first wireless link and the second wireless link;

step S5104 occurs after step S5101, the first node U01, as a response to detecting that the first radio link fails, performs a first set of operations related to whether one of the first and second radio links is for a U2N (UE to Network) relay;

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 third node U03 is an L2U 2N relay UE.

As an embodiment, the third node U03 is a neighbor cell of the first node U01.

As an embodiment, the third node U03 and the second node U02 belong to the same CU.

As an embodiment, the third node U03 and the second node U02 belong to the same DU.

As an embodiment, the third node U03 and the second node U02 belong to the same gNB.

As an embodiment, the third node U03 and the second node U02 are cells with different PCIs (physical cell identity, physical cell identities), respectively.

As an embodiment, the third node U03 and the second node U02 are cells within the first cell group, respectively.

As an embodiment, the third node U03 is another TRP with said second node U02.

As an embodiment, the third node U03 corresponds to another beam of the second node U02 with another set of CSI-RS reference signals.

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

As an embodiment, the second node U02 is a master cell group or a base station of a master cell group.

As an embodiment, the second node U02 is a slave cell group or a base station of a cell group.

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 second node U02 corresponds to a base station corresponding to a cell group of the present application.

As an embodiment, the second node U02 is a U2N relay UE.

As an embodiment, the second node U02 is an L2U 2N relay UE.

As an embodiment, the second node U02 is a U2N relay.

As an embodiment, the second node U02 is a U2N relay UE of the first node U01.

As an embodiment, the third node U03 is a master cell group or a base station corresponding to the master cell group of the first node U01.

As an embodiment, the third node U03 is a cell group of the first node U01 or a base station corresponding to the cell group.

As an embodiment, the first wireless link and the second wireless link are two BWP respectively.

As an embodiment, one of the first radio link and the second radio link is a PTM branch of an MBS service and the other is a PTP branch of the MBS service.

As an embodiment, the first wireless link is a wireless link between the first node U01 and the second node U02.

As an embodiment, the first radio link is or comprises a radio bearer between the first node U01 and the second node U02.

As an embodiment, the first radio link is or includes SRB1 between the first node U01 and the second node U02.

As an embodiment, the first wireless link is or comprises a channel between the first node U01 and the second node U02.

As an embodiment, the first radio link is or comprises an RLC bearer between the first node U01 and the second node U02.

As an embodiment, the first wireless link is or comprises a logical channel between the first node U01 and the second node U02.

As an embodiment, the first wireless link is a wireless link between the first node U01 and the third node U03.

As an embodiment, the first wireless link is a direct link between the first node U01 and the third node U03.

As an embodiment, the second wireless link is an indirect path between the first node U01 and the second node U02.

As an embodiment, the first wireless link is a direct path between the first node U01 and the second node U02.

As an embodiment, the second wireless link is a direct path between the first node U01 and the second node U02.

As an embodiment, the first wireless link is an indirect path between the first node U01 and the second node U02.

As an embodiment, the second radio link is or comprises a radio bearer between the first node U01 and the third node U03.

As an embodiment, the second radio link is or includes SRB1 between the first node U01 and the third node U03.

As an embodiment, the second wireless link is or comprises a channel between the first node U01 and the third node U03.

As an embodiment, the second radio link is or comprises an RLC bearer between the first node U01 and the third node U03.

As an embodiment, the second wireless link is or comprises a logical channel between the first node U01 and the third node U03.

As an embodiment, the second wireless link is used for transmitting data and/or signaling between the first node U01 and the second node U02.

As an embodiment, the second wireless link is used for transmitting data and/or signaling between the first node U01 and a network.

As an embodiment, the second wireless link is used for transmitting data and/or signaling between the first node U01 and MCG.

As an example, step S5103 is later than step S5102, and earlier than step S5104.

As an example, step S5105 is later than step S5104.

As an embodiment, the second signaling is used to configure the first radio link.

As an embodiment, the second signaling is used to configure the second radio link.

As an embodiment, the second signaling is used to indicate at least one parameter of the first radio link.

As an embodiment, the phrase that the second signaling is used to configure the meaning of the first radio link includes that execution of the second signaling will affect the first radio link.

As an embodiment, the phrase that the second signaling is used to configure the meaning of the first radio link includes that execution of the second signaling will change the first radio link.

As an embodiment, the phrase that the second signaling is used to configure the meaning of the first radio link comprises that execution of the second signaling will update at least one parameter of the first radio link.

As an embodiment, the second signaling is used to configure the first node U01.

As an embodiment, the second signaling is RRC signaling.

As an embodiment, the second signaling comprises rrcrecon configuration.

As an embodiment, the second signaling includes Reconfiguration With Sync fields.

As one embodiment, the act of detecting that the first wireless link failed includes the second signaling failure to execute; the phrase that the second signaling execution fails includes the first node U01 not being compatible with one of at least a portion of a configuration indicated by the second signaling and a second timer period; the reception or execution of the second signaling is used to trigger the start of the second timer.

As a sub-embodiment of this embodiment, the phrase that the first node U01 is not compatible with at least part of the configuration indicated by the second signaling comprises: the first node is incompatible with the partial configuration indicated by the second signaling.

As a sub-embodiment of this embodiment, the phrase that the first node U01 is not compatible with at least part of the configuration indicated by the second signaling comprises: the first node is not compatible with all configurations indicated by the second signaling.

As a sub-embodiment of this embodiment, the phrase that the first node U01 is not compatible with at least part of the configuration indicated by the second signaling comprises: the first node U01 fails in the compatibility detection for the second signaling.

As a sub-embodiment of this embodiment, the phrase that the first node U01 is not compatible with at least part of the configuration indicated by the second signaling comprises: the configuration indicated by the second signaling is beyond the capabilities of the first node U01.

As a sub-embodiment of this embodiment, the phrase that the first node U01 is not compatible with at least part of the configuration indicated by the second signaling comprises: the first node U01 does not support the protocol version of the second signaling.

As a sub-embodiment of this embodiment, the phrase that the first node U01 is not compatible with at least part of the configuration indicated by the second signaling comprises: the second signaling is not compatible with the existing configuration of the first node U01.

As a sub-embodiment of this embodiment, the second timer is started immediately after the second signaling is received.

As a sub-embodiment of this embodiment, the second timer is started after the second signaling is received and until it is executed.

As a sub-embodiment of this embodiment, the second timer is a timer related to a cell handover.

As a sub-embodiment of this embodiment, the second timer is a timer related to PSCell change.

As a sub-embodiment of this embodiment, the second timer is a path switch related timer.

As a sub-embodiment of this embodiment, the second timer comprises T304.

As a sub-embodiment of this embodiment, the second timer comprises T304a.

As a sub-embodiment of this embodiment, the second timer comprises T404.

As a sub-embodiment of this embodiment, the second timer is not in an operational state when it is detected that the first node U01 is not compatible with at least part of the configuration indicated by the second signaling.

As a sub-embodiment of this embodiment, the second timer is in an operational state when it is detected that the first node U01 is not compatible with at least part of the configuration indicated by the second signaling.

As one embodiment, the first set of operations includes stopping the second timer.

As one embodiment, the meaning of the sentence as to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay comprises: when one of the first wireless link and the second wireless link is for U2N relay, the first set of operations includes stopping the second timer.

As a sub-embodiment of this embodiment, the first set of operations does not include stopping the second timer when both the first radio link and the second radio link are for a group of cells.

As a sub-embodiment of this embodiment, the state of the second timer is not interfered when both the first radio link and the second radio link are for a cell group.

As an embodiment, expiration of the second timer triggers the first node U01 to perform connection reestablishment.

As one embodiment, the meaning of the sentence as to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay comprises: the first set of operations includes performing connection reestablishment when the first radio link and the second radio link are both for a cell group.

As an embodiment, the first node U01 receives the second message on a sidelink.

As an embodiment, the generator of the second message is a U2N relay UE of the first node, and the second node U02 is the generator of the second message.

As one embodiment, the act of detecting that the first wireless link failed comprises receiving the second message; the second message is used to indicate one of a radio link failure occurred, a message including a reconfiguration wishsync field received or performed, and a cell reselection occurred; the first message is used to indicate a cause or type of failure of the first wireless link in relation to receiving the second message; the first wireless link is for a U2N relay.

As a sub-embodiment of this embodiment, the second message is used to determine that communication with the network via the first wireless link is not possible.

As a sub-embodiment of this embodiment, the second message comprises a PC5-RRC message.

As a sub-embodiment of this embodiment, the second message comprises a PC5-S message.

As a sub-embodiment of this embodiment, the second message is a notification message.

As a sub-embodiment of this embodiment, the second message comprises a notifiationessagesidelink.

As a sub-embodiment of this embodiment, the phrase that the first radio link is for a U2N relay means that: the first wireless link is a sidelink wireless link between the first node U01 and the second node U02.

As a sub-embodiment of this embodiment, the phrase that the first radio link is for a U2N relay means that: the first radio link is a sidelink RLC bearer between the first node U01 and the second node U02, the sidelink RLC bearer being associated with a PDCP entity of the Uu interface.

As a sub-embodiment of this embodiment, the phrase that the first radio link is for a U2N relay means that: the first radio link is a sidelink RLC bearer between the first node U01 and the second node U02, the sidelink RLC bearer being associated with a radio bearer of a Uu interface.

As a sub-embodiment of this embodiment, the phrase that the first radio link is for a U2N relay means that: the first radio link is a sidelink RLC bearer between the first node U01 and the second node U02, the sidelink RLC bearer being associated with SRB 1.

As a sub-embodiment of this embodiment, the phrase that the first radio link is for a U2N relay means that: the first radio link is a sidelink radio channel between the first node U01 and the second node U02, which sidelink radio channel is used for transmitting data or signaling on SRB 1.

As a sub-embodiment of this embodiment, the phrase that the first radio link is for a U2N relay means that: the first radio link is a sidelink radio channel between the first node U01 and the second node U02, and the sidelink radio channel is used for transmitting data or signaling carried by the SRB 1.

As a sub-embodiment of this embodiment, the phrase that the first radio link is for a U2N relay means that: the first wireless link is a sidelink wireless channel between the first node U01 and the second node U02, the sidelink wireless channel being used for transmitting data or signaling between the first node U01 and a network.

As a sub-embodiment of this embodiment, the phrase that the first radio link is for a U2N relay means that: the first wireless link is a logical channel between the first node U01 and the second node U02, the logical channel between the first node U01 and the second node U02 being associated with SRB 1.

As a sub-embodiment of this embodiment, the phrase that a radio link failure has occurred refers to that the second node U02 has occurred a Radio Link Failure (RLF).

As a sub-embodiment of this embodiment, the phrase that a radio link failure has occurred refers to that the second node U02 has occurred that a radio link failure of the Uu interface has occurred.

As a sub-embodiment of this embodiment, the phrase receiving or executing a message including a reconfiguration withsync field includes: a message including a reconfigurationWithSync field is received.

As a sub-embodiment of this embodiment, the phrase receiving or executing a message including a reconfiguration withsync field includes: a message including the reconfigurationWithSync field is executed.

As a sub-embodiment of this embodiment, the phrase receiving or executing a message including a reconfiguration withsync field includes: a message comprising a reconfiguration wishsync field for a primary cell group of said second node U02 is received.

As a sub-embodiment of this embodiment, the phrase receiving or executing a message including a reconfiguration withsync field includes: a message indicating a path switch is received.

As a sub-embodiment of this embodiment, the phrase receiving or executing a message including a reconfiguration withsync field includes: a message indicating a cell switch is received.

As a sub-embodiment of this embodiment, the phrase receiving or executing a message including a reconfiguration withsync field includes: a message is received indicating a primary cell or primary cell group handoff.

As a sub-embodiment of this embodiment, the phrase receiving or executing a message including a reconfiguration withsync field includes: an rrcrecnonconfiguration message including a reconfigurationWithSync field is received.

As a sub-embodiment of this embodiment, the phrase that a cell reselection occurred includes: the second node U02 has cell reselection occurred.

As a sub-embodiment of this embodiment, the phrase that a cell reselection occurred includes: the second node U02 has cell selection occurred.

As a sub-embodiment of this embodiment, the phrase that a cell reselection occurred includes: the second node U02 enters an idle state.

As a sub-embodiment of this embodiment, the phrase that a cell reselection occurred includes: the second node U02 has either a relay selection or a relay reselection.

As a sub-embodiment of this embodiment, the phrase that a cell reselection occurred includes: the second node U02 has either an L2U 2N relay UE selection or an L2U 2N relay UE reselection.

As an embodiment, the first node U01 releases the first radio link in response to receiving the second message.

As an embodiment, the first node U01 releases the PC5 RRC connection with the second node U02 in response to receiving the second message.

Example 6

Embodiment 6 illustrates a schematic diagram of a protocol stack for relaying communications according to one embodiment of the present application, as shown in fig. 6.

And the drawing 6 is divided into three subgraphs (a), (b) and (c).

The protocol stack shown in fig. 6 is applicable to L2U 2N relay communication, and embodiment 6 is based on embodiment 3.

Fig. 6 (a) corresponds to a user plane protocol stack in L2U 2N relay communication; fig. 6 (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.

As one embodiment, the first relay is an L2U 2N relay UE between the first node and the first cell group.

As an embodiment, the gNB in fig. 6 is a PCell of the first node or a gNB corresponding to the PCell.

As an embodiment, the gNB in fig. 6 is the MCG of the first node or the gNB corresponding to the MCG.

As an embodiment, the gNB in fig. 6 is the gNB to which the first node is connected.

As an example, the gNB in fig. 6 has an RRC connection with the first node.

In embodiment 6, the PC5 interface is an interface between the first node and the first relay, and the PC5 interface-related protocol entity { PC5-SRAP, 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, the first relay is a U2N relay UE, the first relay does not provide the L2U 2N relay service to the first node before performing the first signaling, and the first node uses the U2N relay service provided by the first relay after receiving the first signaling.

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

As an embodiment, the gNB in fig. 6 corresponds to the second node of the application.

As an embodiment, the protocol entity { Uu-SRAP, uu-RLC, uu-MAC, uu-PHY } of the Uu interface terminates in said first relay and 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-SRAP corresponds to SRAP357 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-SRAP corresponds to SRAP307 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 in fig. 6 is the PCell of the first relay, which is in RRC connected state.

As an embodiment, the MCG of the first node is also the MCG of the first relay.

As an example, PC5-SRAP is used only for specific RBs or messages or data.

As a sub-embodiment of this embodiment, the PC5-SRAP layer is not used when the first relay forwards the system information of the gNB.

As an embodiment, the SRB1 of the first node is the SRB1 between the first node and the gNB in fig. 6 (b), and the associated protocol entities include Uu-PDCP and Uu-RRC.

As an example, in fig. 6, the communication between the first node and the gNB uses an indirect path.

As an example, in fig. 6, the communication between the first node and the gNB uses a direct path.

As an embodiment, in fig. 6, the communication between the first node and the gNB uses both a direct path and an indirect path.

As an embodiment, the first signaling is generated by Uu-RRC of the gNB in fig. 6 (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 transmission of the first signaling is applicable to fig. 6 (c) without using the first relay.

As an embodiment, the first message is applicable to the protocol structure of fig. 6 (b).

As one embodiment, the first message is forwarded by the first relay to a gNB.

As an embodiment, the Uu-PDCP of the first node is associated with PC5-RLC, or with PC5-RLC through PC5-SRAP, 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 the PC5-SRAP 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 PC5-SRAP 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.

As an embodiment, the second wireless link includes a wireless link between the first node and the first relay in (a) and/or (b) of fig. 6.

As an embodiment, the second wireless link includes a sidelink wireless link between the first node and the first relay in fig. 6 (a) and/or (b).

As an embodiment, the second radio link includes a secondary link RLC bearer between the first node and the first relay in fig. 6 (a) and/or (b).

As an embodiment, the second wireless link includes a transmission channel between the first node and the first relay in (a) and/or (b) of fig. 6.

As an embodiment, the second wireless link includes a logical channel between the first node and the first relay in fig. 6 (a) and/or (b).

As an embodiment, the second wireless link includes a physical channel between the first node and the first relay in fig. 6 (a) and/or (b).

As an embodiment, the second wireless link comprises a direct unicast link between the first node and the first relay in fig. 6 (a) and/or (b).

As an embodiment, the second wireless link comprises an interface between the first node and the PC5-SRAP entity of fig. 6 (a) and/or (b).

As an embodiment, the second wireless link includes a PC5 interface between the first node and the first relay in fig. 6 (a) and/or (b).

As an embodiment, (c) in fig. 6 is a protocol stack when the first node communicates with the gNB when no relay is used.

As an embodiment, (c) in fig. 6 is a protocol stack when no relay is used, i.e. when a direct path is used, when the first node communicates with the gNB.

As an embodiment, the first radio link includes a radio bearer between the first node and the gNB in fig. 6 (c).

As an embodiment, the first wireless link includes a wireless link between the first node and the gNB in fig. 6 (c).

As an embodiment, the first wireless link includes an RLC bearer between the first node and the gNB in fig. 6 (c).

As an embodiment, the first wireless link includes a channel between the first node and the gNB in fig. 6 (c).

As an embodiment, the first wireless link includes a logical channel between the first node and the gNB in fig. 6 (c).

As an embodiment, the first wireless link includes a physical channel between the first node and the gNB in fig. 6 (c).

As an embodiment, the first wireless link includes a Uu interface between the first node and the gNB in fig. 6 (c).

As an embodiment, the second radio link includes a radio bearer between the first node and the gNB in fig. 6 (c).

As an embodiment, the second wireless link includes a wireless link between the first node and the gNB in fig. 6 (c).

As an embodiment, the second radio link includes an RLC bearer between the first node and the gNB in fig. 6 (c).

As an embodiment, the second wireless link includes a channel between the first node and the gNB in fig. 6 (c).

As an embodiment, the second wireless link includes a logical channel between the first node and the gNB in fig. 6 (c).

As an embodiment, the second wireless link includes a physical channel between the first node and the gNB in fig. 6 (c).

As an embodiment, the second wireless link includes a Uu interface between the first node and the gNB in fig. 6 (c).

Example 7

Embodiment 7 illustrates a schematic diagram of a radio bearer according to one embodiment of the present application, as shown in fig. 7.

Embodiment 7 further shows on the basis of embodiment 3 that one PDCP entity is associated with two RLC entities, RLC1 and RLC2, wherein each RLC entity is associated with a different MAC, RLC1 is associated with MAC1 and RLC2 is associated with MAC2, respectively.

Embodiment 7 shows a protocol structure of the first node side.

As an example, fig. 7 is applicable to SRBs including SRB 1.

As an example, fig. 7 is applicable to DRB.

As an example, fig. 7 is applicable to MRB.

As an example, the protocol structure shown in fig. 7 is a split SRB, i.e., split SRB.

As an example, the protocol structure shown in fig. 7 is a split DRB, i.e., split DRB.

As an example, fig. 7 is adapted for transmission.

As an example, fig. 7 is adapted for reception.

As an example, the first protocol entity in fig. 7 is RRC, and fig. 7 is for SRBs including SRB 1.

As an embodiment, the first protocol entity in fig. 7 is an SDAP, and fig. 7 is for a DRB.

As an embodiment, PDCP PDUs in which RRC messages are formed by the processing of the PDCP entity are transmitted through RLC 1.

As an embodiment, PDCP PDUs in which RRC messages are formed by the processing of the PDCP entity are transmitted through RLC 2.

As an embodiment, PDCP PDUs in which the RRC message is formed through the processing of the PDCP entity are transmitted through RLC1 or RLC 2.

As an embodiment, the RRC message is duplicated through PDCP PDUs formed by the processing of the PDCP entity, and is transmitted through RLC1 and RLC2 at the same time.

As an embodiment, the SRB1 is configured to carry the first signaling and the first message.

As an embodiment, the primary path of the SRB1 is for RLC 1.

As an embodiment, the primary path of the SRB1 is for RLC 2.

As an embodiment, the first radio link is for RLC1.

As an embodiment, the first radio link is associated with RLC1 and MAC 1.

As an embodiment, the second radio link is associated with RLC2 and MAC 2.

As an embodiment, both RLC2 and MAC2 are for sidelink communications.

As an embodiment, both RLC2 and MAC2 are for primary link communication, i.e. not for secondary link communication.

As an embodiment, both RLC2 and MAC2 are cell group specific.

As an embodiment, the RLC1 and MAC1 are for a primary cell group.

As an embodiment, the RLC2 and MAC2 are for a cell group.

As an embodiment, the RLC1 and MAC1 are sidelink specific.

As an embodiment, the RLC2 and MAC2 are for a primary cell group.

As an embodiment, the sentence that the first signaling is used to indicate that the primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with the first radio link has the meaning: the first signaling indicates that the logical channel of the main path of SRB1 corresponds to RLC1.

As an embodiment, the sentence that the first signaling is used to indicate that the primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with the first radio link has the meaning: the first signaling indicates that the RLC bearer configuration index of the primary path of SRB1 corresponds to RLC1.

As an embodiment, the sentence setting the main path of the SRB1 to the meaning associated with the second wireless link is: the main path of the SRB1 is set to be for the RLC2.

As an embodiment, the sentence setting the main path of the SRB1 to the meaning associated with the second wireless link is: and setting the logic channel identity of the main path of the SRB1 as the logic channel identity corresponding to the RLC2.

As an embodiment, the sentence setting the main path of the SRB1 to the meaning associated with the second wireless link is: and setting the RLC bearing configuration index of the main path of the SRB1 as the RLC bearing configuration index corresponding to the RLC2.

Example 8

Embodiment 8 illustrates a schematic diagram of a topology according to one embodiment of the application, as shown in fig. 8.

The first node in embodiment 8 corresponds to the first node of the present application.

As an embodiment, the second node in embodiment 8 corresponds to a cell group of the first node of the present application.

As an embodiment, the second node in embodiment 8 corresponds to the primary cell of the first node of the present application.

As an embodiment, the second node in embodiment 8 corresponds to the gNB corresponding to the primary cell group of the present application.

As an embodiment, the second node in embodiment 8 corresponds to the PCell of the first node of the present application.

As an embodiment, the second node in embodiment 8 corresponds to one transmitting point of the master cell group of the first node of the present application.

As an embodiment, the third node in embodiment 8 is a relay node of the first node.

As an embodiment, the third node in embodiment 8 is a U2N relay of the first node.

As an embodiment, the third node in embodiment 8 is a relay between the first node and the network.

As an embodiment, the third node in embodiment 8 is the one L2U 2N relay UE.

As an embodiment, the third node in embodiment 8 is a relay node between the first node and the second node.

As an embodiment, the third node in embodiment 8 is an L2U 2N relay UE of the first node.

As an embodiment, the third node in embodiment 8 is one SCell of the primary cell group of the first node.

As an embodiment, the third node in embodiment 8 is a PSCell or SCG of the first node.

As an embodiment, the third node in embodiment 8 is a transmitting point of the primary cell group of the first node.

As an example, the third node in example 8 is a cell other than a PCell.

As an embodiment, the third node in embodiment 8 is a neighbor cell.

As an embodiment, the third node in embodiment 8 is a repeater of the primary cell group of the first node.

As an example, the third node in example 8 is one node of a TN.

As an embodiment, the third node in embodiment 8 is a node of NTN.

As an embodiment, the first wireless link refers to a bearer between the first node and the second node.

As an embodiment, the first wireless link refers to a wireless link between the first node and the second node.

As an embodiment, the first radio link refers to an RLC bearer between the first node and the second node.

As an embodiment, the first wireless link refers to a communication link between the first node and the second node.

As an embodiment, the first wireless link refers to a channel between the first node and the second node.

As an embodiment, the first wireless link refers to a communication interface between the first node and the second node.

As an embodiment, the first wireless link is relay independent.

As an embodiment, the second wireless link comprises a wireless link between the first node and the third node.

As an embodiment, the second radio link comprises an RLC bearer between the first node and the third node.

As an embodiment, the second wireless link comprises a communication link between the first node and the third node.

As an embodiment, the second wireless link comprises a channel between the first node and the third node.

As an embodiment, the second wireless link comprises a communication interface between the first node and the third node.

As an embodiment, the second wireless link is associated with a relay.

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

As an embodiment, the link between the first node and the second node that is not forwarded by the third node is a direct path.

As an embodiment, the link between the first node and the second node forwarded by the third node is an indirect path.

As an embodiment, the direct path is a manner or a transmission path in which the first node and the second node do not communicate through the third node.

As an embodiment, the indirect path is a manner or a transmission path by which the first node and the second node communicate through the third node.

As an embodiment, the first wireless link is or belongs to a direct path.

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

As an embodiment, the first wireless link and the second wireless link are both directed to the first node.

As an embodiment, the first wireless link and the second wireless link are both for data transmission by the first node and the second node.

As an embodiment, the second wireless link comprises a transmission path between the first node and the third node and between the third node and the second node.

As an embodiment, the second wireless link comprises a direct link between the first node and the third node.

As an embodiment, the second wireless link comprises a PC5 direct link between the first node and the third node.

As one embodiment, the third wireless link is a wireless link between the first node and the third node.

As an embodiment, the first wireless link comprises a wireless link between the first node and the third node.

As an embodiment, the first wireless link comprises an RLC bearer between the first node and the third node.

As one embodiment, the first wireless link comprises a communication link between the first node and the third node.

As an embodiment, the first wireless link comprises a channel between the first node and the third node.

As an embodiment, the first wireless link comprises a communication interface between the first node and the third node.

As an embodiment, the second radio link refers to a bearer between the first node and the second node.

As an embodiment, the second wireless link refers to a wireless link between the first node and the second node.

As an embodiment, the second radio link refers to an RLC bearer between the first node and the second node.

As an embodiment, the second wireless link refers to a communication link between the first node and the second node.

As an embodiment, the second wireless link refers to a channel between the first node and the second node.

As an embodiment, the second wireless link refers to a communication interface between the first node and the second node.

Example 9

Embodiment 9 illustrates a schematic diagram in which a first message is used to indicate that a first wireless link fails, according to one embodiment of the present application, as shown in fig. 9.

As an embodiment, the first message explicitly indicates that the first radio link fails.

As one embodiment, the first message implicitly indicates that the first wireless link failed.

As an embodiment, the first message explicitly indicates a cause of the failure of the first radio link.

As an embodiment, the first message explicitly indicates a type in which the first radio link fails.

As an embodiment, the sending of the first message indicates that the first wireless link fails.

As an embodiment, the first message is one or more fields of an RRC message.

As an embodiment, the first message is one or more cells of an RRC message.

As an embodiment, the first message indicates an identity of the first wireless link.

As an embodiment, the first message indicates a logical channel identity of the first radio link.

As an embodiment, the first message indicates an RLC bearer configuration index corresponding to the first radio link.

As one embodiment, the first message indicates an identity of a cell group for which the first radio link is intended.

As one embodiment, the first message indicates an identity of the U2N relay UE for which the first wireless link is intended.

As one embodiment, the first message indicates a time when the first wireless link failed.

As one embodiment, the first message indicates whether the first wireless link is cell group specific.

As one embodiment, the first message indicates whether the first wireless link is an indirect path.

As an embodiment, the resources occupied by the first message indicate whether the first radio link is a direct path or an indirect path.

As one embodiment, the resources occupied by the first message indicate whether the first radio link is for a cell group or for a U2N relay.

As one embodiment, the first message indicates that the first wireless link failed when the first message is sent on the second wireless link.

As an embodiment, the first message indicates an identity of a relay of the first node.

As an embodiment, the first message is always sent on the second wireless link.

As an embodiment, the first message is always sent on a direct path.

As an embodiment, the first message is forwarded without using a relay.

As an embodiment, the first message is or comprises at least part of a field in a SidelinkUEInformation.

As one embodiment, the first message indicates a rl-failure when the first radio link is for a group of cells.

As an embodiment, when the first radio link is relay-specific, the first message indicates sl-rl-failure.

As an embodiment, the first message includes a failureType field.

As one embodiment, the first message indicates a logical channel identity corresponding to the first radio link.

As an embodiment, the first message indicates a temporary identity of the first node, the temporary identity being one of the identities in the SRAP layer of the first node.

As one embodiment, the first message indicates that a radio link failed and the radio link indicating that the failed radio link was the first radio link.

Example 10

Embodiment 10 illustrates a schematic diagram in which a first message is used to indicate the cause or type of failure of a first wireless link in relation to receiving a second message, as shown in fig. 10, according to one embodiment of the present application.

As an embodiment, the first message explicitly indicates a cause or type of the first radio link failure.

As one embodiment, the first node determines a cause or type of the first radio link failure indicated by the first message according to the second message.

As an embodiment, the first message explicitly indicates that the failure occurred when the indication of the second message was received.

As one embodiment, the first radio link failure comprises an indication of receipt of the second message, the first message comprising the indication of the second message.

As an embodiment, the first message indicates that the cause of the failure of the first radio link is caused by a node other than the first node.

As an embodiment, the first message comprises an identity of a generator of the second message.

As an embodiment, the second message indicates that cell reselection occurs, and the reason why the first radio link indicated by the first message fails is that cell reselection occurs for the U2N relay of the first node.

As an embodiment, the second message indicates that a cell handover occurs, and the reason why the first radio link indicated by the first message fails is that a cell handover occurs for the U2N relay of the first node.

As an embodiment, the second message indicates that reconfiguration with SYNC is received, and the reason why the first radio link indicated by the first message fails is that the U2N relay of the first node received reconfiguration with SYNC.

As one embodiment, the second message indicates that a radio link failure occurs, and the reason why the first radio link failure indicated by the first message occurs is that a U2N relay of the first node occurs.

As an embodiment, the receiving of the second message triggers the first node to release the connection with the U2N relay, the first message indicating that the connection of the first node with the U2N relay is released.

As a sub-embodiment of this embodiment, the connection with the U2N relay comprises a direct link.

As a sub-embodiment of this embodiment, the connection with the U2N relay comprises a PC5-RRC connection.

As an embodiment, the receiving of the second message triggers the first node to release the connection with the U2N relay, the first message indicating that the relay of the first node is not available.

As an embodiment, the receiving of the second message triggers the first node to release the connection with the U2N relay, the first message indicating that the first node has undergone a relay selection or a relay reselection.

Example 11

Embodiment 11 illustrates a block diagram of a processing apparatus for use in a first node according to one embodiment of the application; as shown in fig. 11. In fig. 11, the processing means 1100 in the first node comprises a first receiver 1101 and a first transmitter 1102. In the case of the embodiment of the present application in which the sample is a solid,

A first receiver that receives first signaling 1101; the first signaling is to indicate that a primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with a first radio link; the SRB1 is respectively associated with the first wireless link and the second wireless link;

the first receiver 1101 detects that the first wireless link fails after receiving the first signaling;

a first transmitter 1102 that, in response to the behavior detecting that the first radio link fails, performs a first set of operations relating to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay;

As one embodiment, the meaning of the sentence as to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay comprises: when one of the first wireless link and the second wireless link is for U2N relay, the first set of operations includes releasing the first wireless link; when the first radio link and the second radio link are both for a cell group, the first set of operations includes: suspending transmission of the first wireless link and resetting the MAC;

wherein the sentence whether one of the first wireless link and the second wireless link is for a U2N relay has the meaning of: when one of the first wireless link and the second wireless link is for a U2N relay, the first message does not include a measurement result for the second wireless link; when both the first radio link and the second radio link are for a cell group, the first message includes a measurement result for the second radio link.

As one embodiment, the meaning of the sentence as to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay comprises: when one of the first wireless link and the second wireless link is for U2N relay, the first set of operations does not include stopping evaluation of conditional reconfiguration for the first wireless link; when both the first radio link and the second radio link are for a group of cells, the first set of operations includes ceasing evaluation of conditional reconfiguration for the first radio link.

As one embodiment, the first radio link is for U2N relay and the second radio link is for a primary cell group.

As an example, the first receiver 1101 receives a second message on a sidelink, a generator of the second message being a U2N relay of the first node,

As an embodiment, the first receiver 1101 receives second signaling, the second signaling being used to configure the first wireless link;

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 1101 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 1102 may include at least one of the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller/processor 459, the memory 460, or the data source 467 of example 4.

Example 12

Embodiment 12 illustrates a block diagram of a processing arrangement for use in a second node according to one embodiment of the application; as shown in fig. 12. In fig. 12, the processing means 1200 in the second node comprises a second receiver 1202 and a second transmitter 1201. In the case of the embodiment of the present application in which the sample is a sample,

a second transmitter 1201 transmitting the first signaling; the first signaling is to indicate that a primary path of SRB1 (Signaling Radio Bearer 1, first signaling radio bearer) is associated with a first radio link; the SRB1 is respectively associated with the first wireless link and the second wireless link;

As one embodiment, the second radio link is for U2N relay and the first radio link is for a primary cell group.

As an embodiment, the second transmitter 1201 transmits second signaling, which is used to configure the first radio link;

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 1201 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 1202 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 present application is not limited to any specific combination of software and hardware. The user equipment, the terminal and the UE in the present application include, but are not limited to, unmanned aerial vehicles, communication modules on unmanned aerial vehicles, remote control airplanes, aircrafts, mini-planes, mobile 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 mobile phones, low-cost tablet computers, satellite communication devices, ship communication devices, NTN user devices and other wireless communication devices. The base station or system equipment in the present application includes, but is not limited to, wireless communication equipment such as macro cell base stations, micro cell base stations, home base stations, relay base stations, gNB (NR node B) NR node B, TRP (Transmitter Receiver Point, transmitting and receiving node), NTN base stations, satellite equipment, flight platform equipment, and the like.

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,

sentence the meaning of the first set of operations in relation to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay comprises: when one of the first wireless link and the second wireless link is for U2N relay, the first set of operations includes releasing the first wireless link; when the first radio link and the second radio link are both for a cell group, the first set of operations includes: suspending transmission of the first wireless link and resetting the MAC;

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

the first message relates to whether one of the first wireless link and the second wireless link is for a U2N relay;

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

sentence the meaning of the first set of operations in relation to whether one of the first radio link and the second radio link is for a U2N (UE to Network) relay comprises: when one of the first wireless link and the second wireless link is for U2N relay, the first set of operations does not include stopping evaluation of conditional reconfiguration for the first wireless link; when both the first radio link and the second radio link are for a group of cells, the first set of operations includes ceasing evaluation of conditional reconfiguration for the first radio link.

5. The first node according to any of the claims 1 to 4, characterized in that,

6. The first node according to any of claims 1 to 5, comprising:

the first receiver receiving a second message on a sidelink, a generator of the second message being a U2N relay of the first node,

7. The first node according to any of claims 1 to 6, comprising:

the first receiver receiving second signaling, the second signaling being used to configure the first radio link;

8. A second node for wireless communication, comprising:

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

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