CN117858277A

CN117858277A - Method and apparatus for wireless communication

Info

Publication number: CN117858277A
Application number: CN202211217020.5A
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: 2022-09-30
Filing date: 2022-09-30
Publication date: 2024-04-09

Abstract

A method and apparatus for wireless communication includes receiving first signaling; the first signaling includes a first cell identity configured to a target SpCell; initiating RRC connection reestablishment, the act initiating RRC reestablishment including starting a first timer; receiving second signaling after the first signaling; executing the first signaling in response to receiving the second signaling; wherein the first signaling is signaling of an RRC layer; the first signaling includes a first domain; the first domain is used for configuring the target SpCell, and the first domain is SpCellConfig; the second signaling is control signaling of the MAC layer or control information of the physical layer; the execution of the first signaling depends on the second signaling; the reception of the second signaling is used to stop the first timer or the execution of the first signaling is used to stop the first timer. The method and the device can realize better mobility management through the first signaling.

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 mobility management, and more particularly, to reducing latency, reducing complexity, and avoiding dropped wires.

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 concepts, terms and abbreviations in this application may refer to the 3GPP standards including, but not limited to:

https://www.3gpp.org/ftp/Specs/archive/21_series/21.905/21905-h10.zip

https://www.3gpp.org/ftp/Specs/archive/38_series/38.300/38300-h10.zip

https://www.3gpp.org/ftp/Specs/archive/38_series/38.331/38331-h10.zip

https://www.3gpp.org/ftp/Specs/archive/38_series/38.321/38321-h10.zip

https://www.3gpp.org/ftp/Specs/archive/38_series/38.304/38304-h10.zip

disclosure of Invention

In the latest 3GPP research issues, mobility management is a very important content. The good mobility management method is beneficial to avoiding dropped lines. Due to the complexity of the radio environment, for example at the cell edge, the signal may be unstable or the signal of the current cell is degraded so fast that when a handover instruction from the network has not been received, the RRC connection re-establishment has failed and initiated. The RRC connection reestablishment procedure is that RRC connection reestablishment is initiated first, including cell search, and when a suitable cell is found, an RRC connection reestablishment request is sent to the cell and the feedback of the network is awaited. In view of power saving and network resource saving, the RRC re-establishment procedure uses more complex control, initiating RRC connection re-establishment includes starting an associated timer, and if no suitable cell is found before the timer expires, the RRC connection re-establishment fails. In some cases, the configuration for the current cell is not released, which is beneficial to the user terminal to immediately execute the handover if the handover instruction of the network can be further received in the process of cell selection, and is beneficial to further reducing the delay. However, in this case, if the timer started during the RRC connection reestablishment is allowed to continue to run, other failures may be caused, which may seriously affect communication. This has a greater impact on L1L2 based handover. In conventional cell switching, a mode based on layer 3 (L3), namely RRC (radio resource control ) signaling is adopted, namely, a terminal reports an L3 measurement result, a network selects an appropriate target cell according to the measurement result, sends RRC signaling for indicating switching to the target cell, and the terminal executes the RRC signaling for switching, and the executed process generally includes determining the target cell, applying configuration of the target cell, synchronizing with the target cell, initiating random access, and sending a message of switching completion. The whole switching process involves: interpretation and execution of the signaling, downlink synchronization, uplink synchronization, and completion of the remaining handover steps, which typically require tens of milliseconds to two hundred milliseconds. The influence of the service which is sensitive to the delay requirement is larger, and some services have obvious service quality degradation after exceeding 20 milliseconds. The cells in 5G become smaller and smaller, the handover is more frequent, and the problem of service quality degradation caused by handover delay becomes more serious. One possible approach is to use the measurement results of the lower layer, i.e. L1, and use L1L2 (layer 1 layer 2) signaling, e.g. the signaling of the physical layer or MAC layer, to indicate the handover, combined with some pre-configured signaling, and pre-synchronization of the terminal, etc., which can greatly reduce the delay of the handover. In the conventional handover, no matter the measurement report or the handover command is larger, when the signal is not good, the opposite end may not be sent or more retransmissions may be needed to be sent, but the measurement information or the handover command based on L1L2 is smaller, so that the signal may be enough to be correctly transmitted when the signal is not good, the handover based on L1L2 signaling may be more likely to be used in the RRC connection reestablishment process, the handover signaling based on L1L2 may be more likely to be received, and thus the control of the timer in the RRC connection reestablishment process may be more urgent. Therefore, how to reasonably control the timer in RRC connection reestablishment is a problem to be solved.

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

It should be noted that, in the case of no conflict, the embodiments in any node of the present application and the features in the embodiments may be applied to any other node. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict. At the same time, the method proposed by the present application can also be used to solve other problems in communication.

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

receiving a first signaling; the first signaling includes a first Cell identity configured to a target SpCell (Special Cell);

initiating RRC connection reestablishment, the act initiating RRC (Radio Resource Control ) reestablishment including starting a first timer;

receiving second signaling after the first signaling; executing the first signaling in response to receiving the second signaling;

wherein the first signaling is signaling of an RRC layer; the first signaling includes a first domain; the first domain is used for configuring the target SpCell, and the first domain is SpCellConfig; the second signaling is control signaling of a MAC (Medium Access Control ) layer or control information of a physical layer; the execution of the first signaling depends on the second signaling; the reception of the second signaling is used to stop the first timer or the execution of the first signaling is used to stop the first timer; expiration of the first timer triggers entry into an RRC idle state.

As one embodiment, the problems to be solved by the present application include: how to ensure the reliability of communication, how to reduce the time delay of switching, how to avoid external disconnection, how to support cell switching triggered by lower layers, how to avoid external disconnection in the switching process, how to fall back to the original cell to continue communication when switching fails, how to optimize the process of RRC connection reestablishment, and how to support switching in the RRC connection reestablishment process.

As one example, the benefits of the above method include: the method is more flexible, is beneficial to reducing the time delay of switching, ensures the service quality, ensures the continuity of the service, improves the reliability of switching, avoids the influence of switched data transmission and avoids the disconnection outside.

Specifically, according to one aspect of the present application, the first signaling includes a second domain; the first signaling including the second domain being used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor a release spCellConfig; the act of initiating RRC connection reestablishment includes performing at least cell selection; the second domain is attemptcond reconfig.

Specifically, according to one aspect of the present application, the first signaling includes a third domain; the first signaling including the third domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor a release spCellConfig; the act of initiating RRC connection reestablishment includes performing at least cell selection; the third domain is a domain other than attemptcond reconfig.

Specifically, according to one aspect of the present application, a radio link failure is detected; wherein the behavior detects that a radio link failure is used to trigger the RRC connection re-establishment.

In particular, according to one aspect of the present application, the reception of the second signaling is used to stop cell selection.

In particular, according to one aspect of the present application, whether the execution of the first signaling depends on whether the second signaling is used to determine whether the execution of the first signaling includes starting a second timer; when the execution of the first signaling depends on the second signaling, the execution of the first signaling does not include starting a second timer; when the execution of the first signaling is independent of the second signaling, the execution of the first signaling includes starting a second timer; expiration of the second signaling is used to trigger RRC connection reestablishment; the stop condition of the second timer includes successful completion of a random access procedure for the target SpCell.

Specifically, according to one aspect of the present application, a first signal is transmitted, the first signal including a first measurement report; the first measurement report is used to trigger the second signaling;

Wherein the first signaling is used to configure the first measurement report; the first measurement report is an L1 measurement report.

Specifically, according to one aspect of the present application, during operation of the first timer, a second measurement report is sent;

wherein the first signaling is used to configure the second measurement report; the second measurement report is an L1 measurement report.

Specifically, according to one aspect of the present application, it is determined that the first signaling fails to perform successfully, and RRC connection reestablishment is initiated as a response to the failure of the first signaling to perform successfully.

Specifically, according to one aspect of the present application, the act of initiating RRC connection reestablishment includes suspending SRB0 and all RBs other than MRB for broadcast.

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

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

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

Specifically, according to one aspect of the present application, the first node is an access network device.

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

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

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

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

a first receiver that receives a first signaling; the first signaling includes a first Cell identity configured to a target SpCell (Special Cell);

the first receiver initiating RRC connection reestablishment, the act initiating RRC (Radio Resource Control ) reestablishment including starting a first timer;

the first receiver receiving second signaling after the first signaling; executing the first signaling in response to receiving the second signaling;

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

a fast handoff procedure within the same DU (data unit) can be supported.

The time delay of the switching is reduced.

The continuity of data can be ensured in the switching process.

The impact of the handover on the data transmission is minimized.

L1L2 mobility management is supported.

Unnecessary interrupts are avoided.

The RRC connection reestablishment can be avoided, and the radio link failure can be better dealt with.

Better support of condition reconfiguration.

Coexistence of L1L2 mobility and conditional reconfiguration is supported.

Fast recovery in RRC connection reestablishment is supported.

Supporting handover in RRC connection reestablishment.

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 shows a flow chart of receiving first signaling, initiating RRC connection reestablishment, receiving second signaling, and performing the first signaling according to one embodiment of the present application;

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

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

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

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

fig. 6 shows a schematic diagram of a signaling format according to an embodiment of the present application;

fig. 7 shows a schematic diagram of second signaling for indicating to perform first signaling according to an embodiment of the present application;

fig. 8 shows a schematic diagram in which first signaling is used to configure a first signal according to one embodiment of the present application;

fig. 9 shows a schematic diagram of a first signal being used to report measurement results or recommended target cells or recommended reference signal resources according to one embodiment of the application;

FIG. 10 illustrates a schematic diagram of the receipt of second signaling being used to stop a first timer according to one embodiment of the present application;

FIG. 11 illustrates a schematic diagram in which execution of first signaling is used to stop a first timer, according to one embodiment of the present application;

FIG. 12 illustrates a schematic diagram of a processing device for use in a first node according to one embodiment of the present application;

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

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

Description of the embodiments

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

Example 1

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

In embodiment 1, a first node in the present application receives first signaling in step 101; initiating RRC connection reestablishment in step 102; receiving a second signaling in step 103; the first signaling is performed in step 104.

Wherein the first signaling includes a first Cell identity configured to a target SpCell (Special Cell); the act of initiating RRC (Radio Resource Control ) reestablishment includes starting a first timer; the first signaling is signaling of an RRC layer; the first signaling includes a first domain; the first domain is used for configuring the target SpCell, and the first domain is SpCellConfig; the second signaling is control signaling of a MAC (Medium Access Control ) layer or control information of a physical layer; the execution of the first signaling depends on the second signaling; the reception of the second signaling is used to stop the first timer or the execution of the first signaling is used to stop the first timer; expiration of the first timer triggers entry into an RRC idle state.

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 second signaling is received after the first signaling.

As an embodiment, the second signaling is used to trigger the execution of the first signaling.

As an embodiment, the serving cell refers to a cell in which the UE camps. 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 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 an embodiment, the first signaling is an RRC message.

As an embodiment, the first signaling is or comprises at least part of a domain of an RRC message.

As an embodiment, the first signaling is or comprises a domain of an RRC message.

As an embodiment, what is included in a field of the present application is a cell, and the meaning of including a field is to include the cell.

As an embodiment, a domain of the present application includes a plurality of cells, and the meaning of including a domain includes the plurality of cells.

As an embodiment, the first signaling is an rrcrecon configuration message.

As an embodiment, the first signaling comprises a partial field in an rrcrecon configuration message.

As an embodiment, the first signaling comprises only a partial field in the rrcrecon configuration message.

As one example, each rrcrecon configuration includes at least one CellGroupConfig.

As an embodiment, the first signaling is or includes a CellGroupConfig field or a corresponding cell.

As one embodiment, the first signaling is CellGroupConfig for a cell group of the target SpCell.

As an example, each CellGroupConfig includes at least one SpCellConfig.

As an embodiment, the first signaling includes one or more CellGroupConfig fields in an rrcrecon configuration message.

As an embodiment, the first signaling is or includes a SpCellConfig field or a corresponding cell.

As an embodiment, the first signaling is SpCellConfig for the target SpCell.

As an embodiment, the first signaling includes one or more spcellconfiguration fields in an rrcrecon configuration message.

As an embodiment, the first signaling includes one or more SpCellConfig fields in one CellGroupConfig field.

As an embodiment, the first signaling is an rrcrecon configuration message when the execution of the first signaling is not dependent on the reception of the second signaling.

As an embodiment, the first signaling is that it comprises only one SpCellConfig when the execution of the first signaling is not dependent on the reception of the second signaling.

As an embodiment, when the execution of the first signaling depends on the reception of the second signaling, the first signaling may include a plurality of CellGroupConfig fields and each CellGroupConfig field is used to configure an MCG.

As an embodiment, when the execution of the first signaling depends on the reception of the second signaling, the first signaling may include a plurality of spcellconfigs, each for configuring the PCell.

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

As an embodiment, the logical channel occupied by the first signaling includes DCCH (downlink control channel ).

As an embodiment, the SpCell includes at least one of a PCell and a PSCell.

As an example, the SpCell is a PCell.

As an example, the SpCell is a PSCell.

As an embodiment, the target SpCell is specific to a target cell in a cell handover.

As an embodiment, the first cell identity is PCI (Physical Cell Identity ).

As an embodiment, the physiocellid field in the first signaling indicates the first cell identity.

As an embodiment, the meaning that the phrase that the first cell identity is configured to the target SpCell includes: the target SpCell is a cell indicated by the first cell identity searched on a specific time-frequency resource.

As an embodiment, the meaning that the phrase that the first cell identity is configured to the target SpCell includes: when the first signaling indicates downlink frequency information, the target SpCell is a cell on an SSB (synchronization signal block ) frequency indicated by the downlink frequency information that is indicated by the first cell identity.

As an embodiment, the meaning that the phrase that the first cell identity is configured to the target SpCell includes: when the first signaling does not indicate downlink frequency information, the target SpCell is the cell indicated by the first cell identity on the SSB (synchronization signal block ) frequency of the source cell of the first node.

As an embodiment, the target SpCell corresponds to a source cell or a source SpCell.

As an embodiment, the source cell or source SpCell is a cell in which the first node receives the first signaling.

As an embodiment, the source cell or source SpCell is the cell before the first node handover.

As an embodiment, the first cell identity is or comprises a cell index.

As an embodiment, the first cell identity is or comprises an NCGI (NR Cell Global Identity ).

As an embodiment, after the first signaling execution is completed, the target SpCell becomes the SpCell of the first node.

As an embodiment, the execution of the first signaling depends on the second signaling.

As an embodiment, the execution of the first signaling depends on the second signaling when the first timer is not running.

As an embodiment, the execution of the first signaling depends on the second signaling at least when the first timer is not running.

As an embodiment, the execution of the first signaling is dependent on the second signaling when no RRC connection reestablishment is initiated.

As an embodiment, the execution of the first signaling is dependent on the second signaling when there is no ongoing RRC connection re-establishment procedure.

As an embodiment, the first signaling is not automatically performed after being received.

As an embodiment, the first signaling is not performed immediately after reception.

As an embodiment, the execution of the first signaling needs to be triggered.

As an embodiment, the condition triggering the execution of the first signaling comprises receiving a second signaling.

As an embodiment, the condition triggering the execution of the first signaling comprises receiving a second signaling when the first timer is not running.

As an embodiment, the condition triggering the execution of the first signaling comprises receiving a second signaling when the first timer is running.

As an embodiment, the condition triggering the first signaling execution includes that the selected cell at RRC connection reestablishment is the target SpCell.

As an embodiment, the condition triggering the execution of the first signaling includes that the selected cell is the target SpCell when the first timer is running.

As an embodiment, the second signaling triggers the first signaling when the first timer is running.

As one embodiment, the first signaling is performed when the first timer is running and when the selected cell is the target SpCell.

As one embodiment, when the first timer is running, the first signaling is not performed when the selected cell is not the target SpCell.

As an embodiment, the first signaling is performed when the selected cell is the target SpCell when an RRC reestablishment procedure is initiated.

As an embodiment, when an RRC reestablishment procedure is initiated, the first signaling is not performed when the selected cell is not the target SpCell.

As an embodiment, when there is an ongoing RRC reestablishment procedure, the first signaling is not performed when the selected cell is not the target SpCell.

As an embodiment, when the execution of the first signaling is independent of the reception of the second signaling, the first signaling is executed immediately after the reception.

As an embodiment, the first signaling is performed after the first signaling is received and after a measurement event associated with the first signaling is satisfied when the performance of the first signaling is independent of the reception of the second signaling.

As an embodiment, the performing of the first signaling is independent of the meaning of receiving the second signaling is: whether the second signaling is received does not affect the execution of the first signaling.

As an embodiment, the performing of the first signaling is independent of the meaning of receiving the second signaling is: the first signaling may also be performed without receiving the second signaling.

As an embodiment, the sentence that the execution of the first signaling depends on the meaning of receiving the second signaling is: the first signaling can be performed only after the second signaling is received.

As an embodiment, the sentence that the execution of the first signaling depends on the meaning of receiving the second signaling is: without receiving the second signaling, the first signaling is not performed.

As an embodiment, the sentence that the execution of the first signaling depends on the meaning of receiving the second signaling is: the triggering of the first signaling requires the second signaling to be performed.

As an embodiment, the sentence that the execution of the first signaling depends on the meaning of receiving the second signaling is: the first signaling is stored after being received, and the first signaling can be executed after waiting to receive the second signaling.

As an embodiment, the phrase that the first signaling is signaling of the RRC layer means that: the first signaling is generated at the RRC layer.

As an embodiment, the phrase that the first signaling is signaling of the RRC layer means that: the first signaling is an RRC signaling.

As an embodiment, the phrase that the first signaling is signaling of the RRC layer means that: the first signaling is one or more domains in an RRC signaling.

As an embodiment, the phrase that the first signaling is signaling of the RRC layer means that: the first signaling is one or more RRC cells.

As an embodiment, the first signaling comprises at least the first domain.

As an embodiment, the first domain of the first signaling configures a cell identity of the target SpCell.

As an embodiment, the first domain of the first signaling comprises the first cell identity.

As an embodiment, the first domain of the first signaling configures downlink frequency information of the target SpCell.

As an embodiment, the first domain of the first signaling configures uplink access information of the target SpCell.

As an embodiment, the first domain of the first signaling configures uplink resources of the target SpCell.

As an embodiment, the first domain of the first signaling configures a BWP (bandwidth part) of the target SpCell.

As one embodiment, the first domain of the first signaling configures the power of the target SpCell.

As one embodiment, the first domain of the first signaling configures a timing advance of the target SpCell.

As an embodiment, the first domain of the first signaling configures a reference signal of the target SpCell.

As an embodiment, the first domain of the first signaling configures a control channel of the target SpCell.

As an embodiment, the first domain of the first signaling configures spatial parameters of the target SpCell.

As an embodiment, the second signaling is a MAC CE (control element).

As an embodiment, the second signaling is DCI (downlink control information ).

As an embodiment, the second signaling is signaling below the RRC layer.

As an embodiment, the second signaling is signaling of a MAC layer or a physical layer.

As an embodiment, the second signaling explicitly indicates whether or not to perform the first signaling.

As an embodiment, the second signaling comprises a configuration identity or configuration index of the first signaling.

As an embodiment, the first signaling is triggered to be performed when the second signaling comprises a configuration identity or configuration index of the first signaling.

As an embodiment, the second signaling indicates the target SpCell.

As one embodiment, the first signaling is performed when the second signaling indicates the target SpCell.

As an embodiment, the second signaling indicates a resource or a reference signal of the target SpCell.

As an embodiment, triggering the first signaling is performed when the second signaling indicates a resource or a reference signal of the target SpCell.

As an embodiment, the RRC connection reestablishment includes sending an RRCReestablishmentRequest message.

As an embodiment, the RRC connection reestablishment includes suspending SRB1.

As one embodiment, the RRC connection reestablishment includes suspending all RBs except SRB0 and MRB (MBS radio bearer) for broadcast.

As an embodiment, the RRC connection reestablishment includes suspending current traffic.

As an embodiment, the RRC connection reestablishment includes releasing SCG or SCell.

As an embodiment, the RRC connection reestablishment includes resetting the MAC.

As an embodiment, the RRC connection reestablishment includes starting a T311 timer.

As an embodiment, the RRC connection reestablishment includes releasing spCellConfig.

As an embodiment, the RRC connection reestablishment includes releasing or deleting the first signaling.

As an embodiment, the RRC connection reestablishment includes cell selection.

As one embodiment, the RRC connection reestablishment is initiated to reestablish the RRC connection.

For one embodiment, the reasons for initiating RRC connection reestablishment include: the expiration of the T316 timer is detected.

For one embodiment, the reasons for initiating RRC connection reestablishment include: the MCG is detected to have failed the radio link and T316 is not configured.

For one embodiment, the reasons for initiating RRC connection reestablishment include: the synchronous reconfiguration of the MCG failed (re-configuration with sync).

For one embodiment, the reasons for initiating RRC connection reestablishment include: the lower layer indicates that the integrity protection verification of SRB1 (signaling radio bearer ) or SRB2 fails.

As an embodiment, the starting condition of the first timer is or includes initiating RRC connection reestablishment.

As an embodiment, the first timer is only started when RRC connection reestablishment is initiated.

As an embodiment, the first timer is configured by a serving cell.

As an embodiment, the first timer is configured by dedicated signaling.

As an embodiment, the first timer is configured by a system information block (System Information Block, SIB).

As an embodiment, the stop condition of the first timer includes: a suitable NR cell is selected.

As an embodiment, the stop condition of the first timer includes: a suitable cell is selected.

As an embodiment, the stop condition of the first timer includes: cells of suitable other radio access technologies are selected.

As an embodiment, the stop condition of the first timer includes: an appropriate L2U 2N relay UE is selected.

As one embodiment, the first timer is a T311 timer.

As an embodiment, the name of the first timer includes T3.

As an embodiment, when the first timer expires, the first node enters an RRC idle state.

As an embodiment, entering the RRC idle state means losing the RRC connection with the access network.

As one example, communication with a serving cell requires leaving an RRC idle state.

As one example, RRC connection is required for communication with the serving cell.

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

As an embodiment, the logical channel occupied by the first signaling comprises DCCH (dedicated control channel ).

As an embodiment, the first signaling uses encryption.

As an embodiment, the first signaling uses integrity protection.

As an embodiment, the second signaling uses encryption.

As an embodiment, the second signaling uses integrity protection.

As an embodiment, the second signaling does not use encryption.

As an embodiment, the second signaling does not use integrity protection.

As an embodiment, the second signaling is for the first node.

As an embodiment, the second signaling is only for the first node.

As an embodiment, the physical channel occupied by the second signaling includes PDCCH (physical downlink control channel ).

As an embodiment, the physical channel occupied by the second signaling includes PDSCH (physical downlink shared channel ).

As an embodiment, the sentence as a response to receiving the second signaling, performing the meaning of the first signaling comprises: the second signaling triggers execution of the first signaling.

As an embodiment, the meaning of performing the first signaling is: and executing the partial domain included in the first signaling.

As an embodiment, the meaning of performing the first signaling is: all domains comprised by the first signaling are performed.

As an embodiment, the meaning of performing the first signaling is: all cells comprised by said first signaling are performed.

As an embodiment, the meaning of performing the first signaling is: and executing part of cells included in the first signaling.

As an embodiment, the meaning of performing the first signaling is: all domains and sub-domains comprised by the first signaling are performed and so on.

As an embodiment, the meaning of performing the first signaling is: executing the first signaling includes executing at least a reconfiguration withsync included in the first signaling.

As an embodiment, the meaning of performing the first signaling is: executing the first signaling includes executing at least the first domain included in the first signaling.

As an embodiment, the first timer is stopped after the first signaling is performed.

As an embodiment, the first timer is stopped when the first signaling execution is completed.

As an embodiment, the first timer does not run means that the first timer is stopped.

As an embodiment, the first timer is not running when the first signaling execution is completed.

As an embodiment, the sentence that the receiving of the second signaling is used to stop the meaning of the first timer comprises: the physical layer of the first node sends a first indication to a higher layer, wherein the first indication is used for indicating that the second signaling is received; the second signaling is control information of a physical layer, and the first indication triggers stopping of the first timer.

As an embodiment, the sentence that the receiving of the second signaling is used to stop the meaning of the first timer comprises: the MAC layer of the first node sends a first indication to a higher layer, wherein the first indication is used for indicating that the second signaling is received; the second signaling is control signaling of the MAC layer, and the first indication triggers stopping of the first timer.

As an embodiment, the higher layer comprises an RRC layer.

As an embodiment, the first timer is a timer of the RRC layer.

As an embodiment, the act of receiving the second signaling is performed after the act of receiving the first signaling.

As an embodiment, the act of initiating RRC connection reestablishment is performed after the act of receiving the first signaling.

As an embodiment, the act of receiving the second signaling is performed after the act of initiating RRC connection reestablishment.

As an embodiment, the first node is not an L2U 2N remote UE.

As an embodiment, the first signaling comprises a second domain; the first signaling including the second domain being used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor a release spCellConfig; the act of initiating RRC connection reestablishment includes performing at least cell selection; the second domain is attemptcond reconfig.

As an embodiment, the sentence that the first signaling includes the second domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor includes a meaning of releasing spCellConfig includes: when the first signaling includes the second domain, the act of initiating RRC connection reestablishment does not include a MAC reset nor releasing spCellConfig.

As an embodiment, the sentence that the first signaling includes the second domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor includes a meaning of releasing spCellConfig includes: when the first signaling does not include the second domain, the act of initiating RRC connection reestablishment includes a MAC reset and also includes releasing spCellConfig.

As an embodiment, the sentence that the first signaling includes the second domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor includes a meaning of releasing spCellConfig includes: when the second domain is present in the first signaling, the behavior initiates RRC connection reestablishment without including a MAC reset nor releasing spCellConfig.

As an embodiment, the sentence that the first signaling includes the second domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor includes a meaning of releasing spCellConfig includes: when the second domain is not present in the first signaling, the act of initiating RRC connection reestablishment includes a MAC reset and also includes releasing spCellConfig.

As an embodiment, the meaning of the behavior release spCellConfig is: releasing the current spCellConfig.

As an embodiment, the meaning of the behavior release spCellConfig is: releasing the spCellConfig in use.

As an embodiment, the meaning of the behavior release spCellConfig is: the spCellConfig of the current SpCell is released.

As an embodiment, the meaning of the behavior release spCellConfig is: whether the spCellConfig is not for the target SpCell.

As an embodiment, the meaning of the behavior release spCellConfig is: whether the spCellConfig is not the spCellConfig included in the first signaling.

As an embodiment, the behavioural MAC reset includes resetting the MAC corresponding to the MCG.

As one embodiment, the act of initiating RRC reestablishment includes releasing SCG.

As an embodiment, the first signaling comprises a third domain; the first signaling including the third domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor a release spCellConfig; the act of initiating RRC connection reestablishment includes performing at least cell selection; the third domain is a domain other than attemptcond reconfig.

As an embodiment, the sentence that the first signaling includes the third domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor includes a meaning of releasing spCellConfig includes: when the first signaling includes the third domain, the behavior initiates RRC connection reestablishment without including a MAC reset and without releasing spCellConfig.

As an embodiment, the sentence that the first signaling includes the third domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor includes a meaning of releasing spCellConfig includes: when the first signaling does not include the third domain, the act of initiating RRC connection reestablishment includes a MAC reset and also includes releasing spCellConfig.

As an embodiment, the sentence that the first signaling includes the third domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor includes a meaning of releasing spCellConfig includes: when the third domain is present in the first signaling, the behavior initiates RRC connection reestablishment without including a MAC reset and without releasing spCellConfig.

As an embodiment, the sentence that the first signaling includes the third domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor includes a meaning of releasing spCellConfig includes: when the third domain is not present in the first signaling, the act of initiating RRC connection reestablishment includes a MAC reset and also includes releasing spCellConfig.

As an embodiment, the sentence that the first signaling includes the third domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor includes a meaning of releasing spCellConfig includes: the third field indicates whether the behavior initiated RRC connection reestablishment includes a MAC reset.

As an embodiment, the sentence that the first signaling includes the third domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor includes a meaning of releasing spCellConfig includes: the third field indicates whether the action initiated RRC connection reestablishment includes releasing spCellConfig.

As an embodiment, the sentence that the first signaling includes the third domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor includes a meaning of releasing spCellConfig includes: when the first signaling includes at least one of the second domain and the third domain, the behavior initiated RRC connection reestablishment does not include a MAC reset nor a release spCellConfig.

As an embodiment, the sentence that the first signaling includes the third domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor includes a meaning of releasing spCellConfig includes: the act of initiating RRC connection reestablishment includes a MAC reset and also includes releasing spCellConfig only when the first signaling does not include the second domain nor the third domain.

As an embodiment, the first signaling comprises the second domain being used to indicate that conditional reconfiguration should be performed when the selected cell is the target candidate cell at the first cell selection.

As a sub-embodiment of this embodiment, it is assumed that the first node does not receive the second signaling.

As an embodiment, the first signaling includes the second domain being used to indicate: conditional reconfiguration should be performed when the cell selected at the time of the first cell selection is the target candidate cell upon failure.

As an embodiment, when the second domain is not configured, the act of initiating RRC connection reestablishment includes a MAC reset also includes releasing spCellConfig.

As an embodiment, the meaning that the phrase is not configured by the second domain includes: the first signaling does not include the second domain.

As an embodiment, the meaning that the phrase is not configured by the second domain includes: the second domain is not present in the first signaling.

As an embodiment, the meaning that the phrase is not configured by the second domain includes: the rrcrecon configuration message including the second domain is not received.

As an embodiment, the meaning that the phrase is not configured by the second domain includes: the RRC message including the second domain is not received.

As an embodiment, the meaning that the phrase is not configured by the third domain includes: the first signaling does not include the third domain.

As an embodiment, the meaning that the phrase is not configured by the second domain includes: the third domain is not present in the first signaling.

As an embodiment, the meaning that the phrase is not configured by the third domain includes: the rrcrecon configuration message including the third domain is not received.

As an embodiment, the meaning that the phrase is not configured by the third domain includes: the RRC message including the third domain is not received.

As an embodiment, when the third domain is not configured, the act of initiating RRC connection reestablishment includes a MAC reset also includes releasing spCellConfig.

As an embodiment, when neither the second domain nor the third domain is configured, the act of initiating RRC connection reestablishment includes a MAC reset and also includes releasing spCellConfig.

As an embodiment, when one of the second domain and the third domain is configured and the other is not configured, the act of initiating RRC connection reestablishment includes a MAC reset and also includes releasing spCellConfig.

As an embodiment, the act of initiating RRC connection reestablishment does not include a MAC reset nor releasing spCellConfig when one of the second domain and the third domain is configured and the other is not configured.

As one embodiment, the meaning that the condition reconfiguration should be performed when the selected cell is the target candidate cell at the time of the first cell selection includes: the conditional reconfiguration is a conditional reconfiguration for the target candidate cell.

As one embodiment, the meaning that the condition reconfiguration should be performed when the selected cell is the target candidate cell at the time of the first cell selection includes: the target candidate cell is a cell configured with conditional reconfiguration.

As an embodiment, the cell configured with the conditional reconfiguration is a cell for which the conditional reconfiguration is directed.

As an embodiment, the conditional reconfiguration includes a conditional reconfiguration.

As an embodiment, the conditional reconfiguration includes a configuration indicated by a conditional reconfiguration.

As an example, the second domain is for CHO (conditional handover, conditional switching).

As an embodiment, the third domain is handover-specific.

As an embodiment, the third domain is for L1 mobility.

As an embodiment, the third domain is for L2 mobility.

As an embodiment, the third domain is for L1L2 mobility.

As an embodiment, the third domain is switched for L1 and/or L2.

As an embodiment, the third domain is for fast handover.

As an embodiment, the second domain is included in the second signaling.

As an embodiment, the first signaling includes a configurable reconfiguration that does not include the third domain.

As an embodiment, the first domain included in the first signaling includes the third domain.

As an embodiment, the conditional reconfiguration comprises at least one condreconfigtoadmod comprised by a condreconfigtoadmodlist.

As an embodiment, a condreconfirmto toaddmod includes an identity of a condition reconfiguration, an execution condition of the condition reconfiguration, and a condition reconfiguration content.

As an embodiment, the conditional reconfiguration content includes an rrcrecon configuration message embedded in the container.

As an embodiment, the cell configured with conditional reconfiguration refers to a cell for which the speccellconfig included in the rrcrecon configuration message embedded in the container is directed or indicated.

As an embodiment, the first signaling comprises the third domain being used to indicate that the first signaling should be performed when the selected cell is the target SpCell.

As a sub-embodiment of this embodiment, the cell selected by the first node in the cell selection procedure is the selected cell.

As an embodiment, when the first signaling includes the third domain, the target SpCell is selected in a cell selection included in the behavioural RRC connection reestablishment, the first node performs the first signaling.

As an embodiment, the target SpCell is any candidate target SpCell included in the first signaling.

As an embodiment, the meaning that the phrase should perform the first signaling when the selected cell is the target SpCell includes: after failure occurs, the first signaling should be performed when the selected cell is the target SpCell.

As an embodiment, the meaning that the phrase should perform the first signaling when the selected cell is the target SpCell includes: in the RRC connection reestablishment procedure, the first signaling should be performed when the selected cell is the target SpCell.

As an embodiment, the reception of the second signaling is used to stop the selection of the L2U 2N relay UE.

As an embodiment, the reception of the second signaling is used to stop cell selection.

As a sub-embodiment of this embodiment, the cell selection is a cell selection procedure included in RRC connection reestablishment.

As an embodiment, the reception of the second signaling is used to stop cell selection while the first timer is running.

As an embodiment, the meaning that the reception of the second signaling is used to stop cell selection includes: and triggering to stop cell selection when the second signaling is received.

As an embodiment, the meaning that the reception of the second signaling is used to stop cell selection includes: the lower layer of the first node sends a first indication to the RRC layer, the first indication indicating that the second signaling is received, the first indication triggering to stop cell selection.

As an embodiment, the meaning that the reception of the second signaling is used to stop cell selection includes: the performing of the first signaling includes ceasing cell selection.

As an embodiment, the meaning that the reception of the second signaling is used to stop cell selection includes: the stopping of the first timer triggers stopping of cell selection.

As an embodiment, the lower layer of the first node sends a first indication to the RRC layer, the first indication indicating that the second signaling is received.

As an embodiment, the first timer is running when the first indication is received.

As an embodiment, the first timer is running when the second signaling is received.

As an embodiment, the first timer is running at the beginning of performing the first signaling.

As an embodiment, the first node does not select a suitable cell upon receiving the first indication.

As an embodiment, upon receiving the first indication, the first node does not select an appropriate L2U 2N relay UE.

As an embodiment, the first node does not select a suitable cell upon receiving the second signaling.

As an embodiment, the first node does not select an appropriate L2U 2N (UE to Network) relay UE upon receiving the second signaling.

As an embodiment, at the beginning of performing the first signaling, the first node does not select a suitable cell.

As an embodiment, at the beginning of performing the first signaling, the first node does not select an appropriate L2U 2N relay UE.

As an embodiment, the reason for the stopping of the first timer is independent of the selection of a suitable cell.

As an embodiment, the reason for the stopping of the first timer is independent of the selection of a suitable L2U 2N relay UE.

As an embodiment, the cause of the stopping of the first timer is related to the reception of the second signaling.

As an embodiment, the cause of the stopping of the first timer is related to the execution of the first signaling.

As an embodiment, whether the execution of the first signaling depends on whether the second signaling is used to determine whether the execution of the first signaling includes starting a second timer; when the execution of the first signaling depends on the second signaling, the execution of the first signaling does not include starting a second timer; when the execution of the first signaling is independent of the second signaling, the execution of the first signaling includes starting a second timer; expiration of the second signaling is used to trigger RRC connection reestablishment; the stop condition of the second timer includes successful completion of a random access procedure for the target SpCell.

As one embodiment, the second timer is a T304 timer.

As one embodiment, the random access procedure for the target SpCell is considered to be successfully completed when feedback for the random access procedure from the target SpCell is received.

As an embodiment, the name of the third field includes attempt.

As an embodiment, the name of the third field comprises config.

As an embodiment, the name of the third field includes spCellconfig.

As an example, the name of the third field includes CellGroupConfig.

As an embodiment, the first signaling comprises a fourth field, and whether the fourth field is executed when the first signaling is executed is related to a reason why the first signaling is triggered.

As an embodiment, the fourth field is used to configure a cell group.

As an embodiment, the fourth domain is used for configuring PDCP entities.

As an embodiment, the fourth domain is configured to configure uplink random access resources.

As an embodiment, the fourth domain is configured to configure security parameters.

As an embodiment, the meaning that the execution of the first signaling is not triggered by the second signaling includes: the execution of the first signaling is triggered by the selection of the target SpCell during RRC connection re-establishment.

As an embodiment, the first node is not an IAB (Integrated Access & Backhaul) node.

As one embodiment, the act of initiating RRC connection reestablishment includes suspending SRB0 and all RBs other than MRB for broadcast.

As an embodiment, the first signal comprises the first measurement report.

As an embodiment, the first node transmits a first signal before receiving the second signaling.

As an embodiment, the first signal is transmitted after receiving the first signaling.

As an embodiment, the second signaling is received after the first signal is transmitted.

As an embodiment, the first signal is used to trigger the second signaling.

As an embodiment, the first signal comprises a measurement result.

As one embodiment, the first signal comprises an L1 measurement.

As an embodiment, the first signal comprises L1-RSRP.

As an embodiment, the first signal comprises an identity or index.

As a sub-embodiment of this embodiment, the one identity or index is associated with the first signaling.

As a sub-embodiment of this embodiment, the one identity or index is associated with the target SpCell.

As an embodiment, the second signaling comprises the one identity or the index indicated by the first signal.

As an embodiment, when the second signaling comprises the one identity or the index indicated by the first signal, the execution of the first signaling associated with the one identity or the index is triggered.

As an embodiment, the sentence the meaning of the second signaling for indicating to perform the first signaling includes: the second signaling triggers execution of the first signaling.

As an embodiment, when the execution of the first signaling is independent of the reception of the second signaling, the execution of the first signaling comprises initiating a random access for the target SpCell.

As an embodiment, when the execution of the first signaling is independent of the reception of the second signaling, the execution of the first signaling triggers the initiation of random access for the target SpCell.

As an embodiment, the first node initiates random access to the target SpCell accompanying the execution of the first signaling when the execution of the first signaling is independent of the reception of the second signaling.

As an embodiment, when the execution of the first signaling depends on the second signaling, the first signaling does not include a reconfigurationwisync; when the execution of the first signaling is independent of the second signaling, the first signaling includes a reconfigurationwisync.

As an embodiment, when the execution of the first signaling depends on the second signaling, the first signaling includes a spcellConfig that does not include a reconfigurationwisync.

As an embodiment, the performing of the first signaling includes using a new C-RNTI.

As an embodiment, the new C-RNTI is an Identity indicated by a newUE-Identity field included in the first signaling.

As an embodiment, the performing of the first signaling includes configuring lower layers according to the received spCellConfigCommon.

As an embodiment, the execution of the first signaling does not start the first timer.

As an embodiment, the performing of the first signaling comprises starting the first timer.

As an embodiment, the performing of the first signaling includes synchronizing the target SpCell.

As an embodiment, the performing of the first signaling comprises applying a BCCH configuration.

As one embodiment, the performing of the first signaling includes determining the target SpCell.

As an embodiment, the performing of the first signaling includes applying a new C-RNTI.

As an example, the cell group to which the target SpCell belongs is MCG.

As an example, the cell group to which the target SpCell belongs is SCG.

As one embodiment, MAC reset or resetting the MAC includes flushing the HARQ (Hybrid Automatic Repeat reQuest ) buffer.

As one embodiment, the MAC reset or resetting the MAC includes stopping a timer of the MAC layer.

As one embodiment, MAC reset or resetting the MAC includes stopping the random access procedure.

As an embodiment, the execution of the first signaling is directed to the MCG.

As one embodiment, initiating RRC connection reestablishment includes performing at least cell selection.

As an embodiment, the first signaling is used for handover, and the target SpCell is a target cell for handover.

As an embodiment, the target SpCell becomes the SpCell of the first node when the first signaling execution is completed.

As an embodiment, the execution of the first signaling includes or requires synchronization with the target SpCell.

As an embodiment, the first node disconnects from the source SpCell when the first signaling is completed in execution.

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 application may be extended to networks providing circuit switched services or other cellular networks. The NG-RAN includes NR node bs (gnbs) 203 and other gnbs 204. The gNB203 provides user and control plane protocol termination towards the UE 201. The gNB203 may be connected to other gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (transmit receive node), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5GC/EPC210. Examples of UE201 include a cellular telephone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, a non-terrestrial base station communication, a satellite mobile communication, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, an drone, an aircraft, a narrowband internet of things device, a machine-type communication device, a land-based vehicle, an automobile, a wearable device, or any other similar functional device. Those of skill in the art may also refer to the UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. gNB203 is connected to 5GC/EPC210 through an S1/NG interface. The 5GC/EPC210 includes MME (Mobility Management Entity )/AMF (Authentication Management Field, authentication management domain)/SMF (Session Management Function ) 211, other MME/AMF/SMF214, S-GW (Service Gateway)/UPF (User Plane Function ) 212, and P-GW (Packet Date Network Gateway, packet data network Gateway)/UPF 213. The MME/AMF/SMF211 is a control node that handles signaling between the UE201 and the 5GC/EPC210. In general, the MME/AMF/SMF211 provides bearer and connection management. All user IP (Internet Protocal, internet protocol) packets are transported through the S-GW/UPF212, which S-GW/UPF212 itself is connected to the P-GW/UPF213. The P-GW provides UE IP address assignment as well as other functions. The P-GW/UPF213 is connected to the internet service 230. Internet services 230 include operator-corresponding internet protocol services, which may include, in particular, the internet, intranets, IMS (IP Multimedia Subsystem ) and packet-switched streaming services.

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

As one embodiment, the base station of the second 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 gNB203 is a macro cell (marcocelluar) base station.

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

As an example, the gNB203 is a Pico Cell (Pico Cell) base station.

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

As one embodiment, the gNB203 is a satellite device.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture according to one user plane and control plane of the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, fig. 3 shows the radio protocol architecture for the control plane 300 for a first node (UE, satellite or aerial in gNB or NTN) and a second node (gNB, satellite or aerial in UE or NTN), or between two UEs, in three layers: layer 1, layer 2 and layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY301. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the links between the first node and the second node and the two UEs through PHY301. The L2 layer 305 includes a MAC (Medium Access Control ) sublayer 302, an RLC (Radio Link Control, radio link layer control protocol) sublayer 303, and a PDCP (Packet Data Convergence Protocol ) sublayer 304, which terminate at the second node. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by ciphering the data packets and handover support for the first node between second nodes. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out of order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell among the first nodes. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control ) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second node and the first node. The PC5-S (PC 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 connection 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. For nodes not involved in relay communications, PC5-S307, SRAP308, SRAP358 are not required in the course of the communication.

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

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

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

As an embodiment, the second signaling in the present application is generated in the MAC302 or PHY301.

As an embodiment, the first signal in the present application is generated in the MAC302 or the PHY301.

As an embodiment, the second signal in the present application is generated in the MAC302 or the PHY301.

As an embodiment, the first measurement report in the present application is generated in MAC302 or PHY301.

Example 4

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

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

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

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

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

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

In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the receiving function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals to baseband signals, and provides the baseband signals to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement the functions of the L1 layer. The controller/processor 475 implements L2 layer functions. The controller/processor 475 may be associated with a memory 476 that stores program codes and data. Memory 476 may be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, a controller/processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover upper layer data packets from the UE 450. Upper layer packets from the controller/processor 475 may be provided to the core network.

As an embodiment, the first communication device 450 apparatus includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus of the first communication device 450 to at least: receiving a first signaling; the first signaling includes a first Cell identity configured to a target SpCell (Special Cell); initiating RRC connection reestablishment, the act initiating RRC (Radio Resource Control ) reestablishment including starting a first timer; receiving second signaling after the first signaling; executing the first signaling in response to receiving the second signaling; wherein the first signaling is signaling of an RRC layer; the first signaling includes a first domain; the first domain is used for configuring the target SpCell; the second signaling is control signaling of a MAC (Medium Access Control ) layer or control information of a physical layer; the execution of the first signaling depends on the second signaling; the reception of the second signaling is used to stop the first timer or the execution of the first signaling is used to stop the first timer; expiration of the first timer triggers entry into an RRC idle state.

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 includes a first Cell identity configured to a target SpCell (Special Cell); initiating RRC connection reestablishment, the act initiating RRC (Radio Resource Control ) reestablishment including starting a first timer; receiving second signaling after the first signaling; executing the first signaling in response to receiving the second signaling; wherein the first signaling is signaling of an RRC layer; the first signaling includes a first domain; the first domain is used for configuring the target SpCell; the second signaling is control signaling of a MAC (Medium Access Control ) layer or control information of a physical layer; the execution of the first signaling depends on the second signaling; the reception of the second signaling is used to stop the first timer or the execution of the first signaling is used to stop the first timer; expiration of the first timer triggers entry into an RRC idle state.

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 for receiving the first signaling in the present application.

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

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

Example 5

Embodiment 5 illustrates a wireless signal transmission flow diagram according to one embodiment of the present application, as shown in fig. 5. In fig. 5, U01 corresponds to a first node of the present application, 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; transmitting the first in step S5102A signal; initiating RRC connection reestablishment in step S5103; receiving a second signaling in step S5104; the first signaling is performed in step S5105.

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

In embodiment 5, the first signaling includes a first Cell identity configured to a target SpCell (Special Cell); the act of initiating RRC (Radio Resource Control ) reestablishment includes starting a first timer;

Wherein the first signaling is signaling of an RRC layer; the first signaling includes a first domain; the first domain is used for configuring the target SpCell; the second signaling is control signaling of a MAC (Medium Access Control ) layer or control information of a physical layer; the execution of the first signaling depends on the second signaling; the reception of the second signaling is used to stop the first timer or the execution of the first signaling is used to stop the first timer; expiration of the first timer triggers entry into an RRC idle state.

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

As an embodiment, the second node U02 is a network device.

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

As an embodiment, the second node U02 is a source SpCell of the first node U01.

As an embodiment, the second node U02 is a PCell of the first node U01 when receiving the first signaling.

As an embodiment, the second node U02 is a PSCell of the first node U01 when receiving the first signaling.

As an embodiment, the first node U01 switches from the second node U02 to the target SpCell.

As an embodiment, the first signaling comprises pre-configured parameters for handover.

As an embodiment, after the first node U01 finishes executing step S5104, the SpCell of the first node U01 is the target SpCell.

As an embodiment, the air interface between the first node U01 and the second node U02 is a Uu interface.

As an embodiment, the first node U01 is in an RRC connected state.

As an embodiment, the first domain is spCellConfig.

As an embodiment, the name of the first field includes spCellConfig.

As an embodiment, the first node U01 needs to configure L3 based measurements and reporting when the execution of the first signaling is not dependent on the reception of the second signaling.

As a sub-embodiment of this embodiment, the measuring includes configuring at least one measObjectNR.

As a sub-embodiment of this embodiment, the measuring includes configuring the frequency for which the measuring is intended.

As a sub-embodiment of this embodiment, the measurement comprises configuring the cell for which the measurement is intended.

As a sub-embodiment of this embodiment, the measuring includes configuring reference signal resources for which the measuring is intended.

As a sub-embodiment of this embodiment, the measuring includes configuring a time for which the measuring is intended.

As a sub-embodiment of this embodiment, the reporting includes configuring at least one reportConfig.

As a sub-embodiment of this embodiment, each measurement configured includes a measured identity, measId, each measured identity being associated with a reporting configuration.

As a sub-embodiment of this embodiment, the report includes trigger conditions for configuring the report, including periodic triggers and event triggers.

As a sub-embodiment of this embodiment, the report includes statistics of the configuration report.

As an embodiment, after the second node U02 receives the report, a cell handover is determined.

As an embodiment, the first node U01 may not be configured to be based on L3 measurements and reporting when the execution of the first signaling is dependent on receiving the second signaling.

As a sub-embodiment of this embodiment, the second node U02 determines a cell handover based on the first signal comprising the measurement result of L1 or the target cell recommended based on the measurement result of L1.

As an example, the meaning of L3 (layer 3) based measurement includes: the measured data is processed using an L3 filter.

As an example, the meaning of L1 (layer 1) based measurement includes: the measured data is processed using an L1 filter.

As an example, the measurement of L3 is smoother than the measurement of L1, but takes a longer time to acquire.

As an embodiment, the first signaling is used to configure the first signal.

As an example, step S5101 precedes step S5102.

As an example, step S5103 follows step S5102.

As an example, step S5103 precedes step S5102.

As an example, step S5104 precedes step S5102.

As an example, step S5104 follows step S5103.

As an example, step S5201 precedes step S5202.

As an example, step S5203 follows step S5202.

As an embodiment, the first signal is used to trigger the second signaling.

As an embodiment, the performing of the first signaling is dependent on the meaning of receiving the second signaling comprising: the first signaling is not executed immediately or automatically after being received, but is to wait for the second signaling, and the second signaling triggers the first signaling.

As an embodiment, the first node U01 starts a second timer as a response to receiving the second signaling; wherein the second timer is a MAC (Medium Access Control ) sublayer timer.

As an embodiment, the stop condition of the second timer includes: a fourth signal is received.

As a sub-embodiment of this embodiment, the fourth signal is DCI.

As a sub-embodiment of this embodiment, the fourth signal is transmitted by the second node U02.

As a sub-embodiment of this embodiment, the fourth signal is an ACK.

As an embodiment, the fourth signal is used to confirm that the handover is successful.

As an embodiment, the fourth signal is used to confirm that the handover is completed.

As an embodiment, the fourth signal is used to confirm that the first signaling is performed.

As an embodiment, the fourth signal is used to confirm that the second signaling is performed.

As an embodiment, the stop condition of the second timer includes: and completing random access to the target SpCell.

As an embodiment, the stop condition of the second timer includes: and finishing the execution of the first signaling.

As an embodiment, expiration of the second timer is used to determine failure.

As an embodiment, expiration of the second timer is used to determine a cell handover failure.

As an embodiment, expiration of the second timer is used to determine failure of the first signaling to execute.

As an embodiment, expiration of the second timer is used for RRC connection reestablishment.

As an embodiment, expiration of the second timer is used to initiate a wave speed failure recovery.

As an embodiment, expiration of the second timer is used to retransmit information comprised by the first signal.

As an embodiment, expiration of the second timer is used to perform configuration for the SpCell other than the target SpCell.

As an embodiment, the expiration of the second timer is used to determine that the cell other than the target SpCell is a new target SpCell, and perform a corresponding configuration.

As a sub-embodiment of this embodiment, the first signaling comprises the corresponding configuration.

As a sub-embodiment of this embodiment, the signaling other than the first signaling comprises the corresponding configuration.

As a sub-embodiment of this embodiment, the corresponding configuration comprises a spCellConfig at least for the new target SpCell.

As a sub-embodiment of this embodiment, the execution of the corresponding configuration is not dependent on the reception of the signaling of the second node U02.

As an embodiment, a third timer is started accompanying the transmission of the first signal.

As an embodiment, the third timer may not send the same-name MAC CE of the MAC CE included in the first signal by the first node U01 before expiration.

As an embodiment, the first node U01 sends the same-name MAC CE of the MAC CE included in the first signal only after the third timer expires.

As an embodiment, expiration of the third timer is used to trigger retransmission of information comprised by the first signal.

As an embodiment, expiration of the third timer is used to trigger transmission of the fifth signal, which includes the same MAC CE as the first signal.

As an embodiment, the fifth signal is a retransmission of the first signal.

As an embodiment, the fifth signal is generated in a physical layer.

As an embodiment, the fifth signal is generated at the MAC layer.

As an embodiment, the first signal includes UCI (uplink Control information ).

As an embodiment, the receiving of the second signaling is used to stop the third timer.

As an embodiment, the expiration of the third timer is used to determine that the cell other than the target SpCell is a new target SpCell, and perform a corresponding configuration.

As a sub-embodiment of this embodiment, after the corresponding configuration is performed, the first node U01 switches to the new target SpCell.

As an embodiment, the second signaling is DCI.

As an embodiment, the first node U01 listens to the PDCCH to receive the second signaling.

As an embodiment, the second signaling includes a MAC CE.

As an embodiment, the second signaling is unicast.

As an embodiment, the second signaling indicates a reference signal resource of the target SpCell.

As an embodiment, the second signaling indicates beam information of the target SpCell.

As an embodiment, the first signal indicates the recommended reference signal resource of the target SpCell.

As an embodiment, the first signal indicates the recommended beam information of the target SpCell.

As one embodiment, in step S5105, performing first signaling includes applying TCI (transmission configuration indication, transport configuration indication) status.

As an embodiment, in step S5105, performing first signaling includes applying a TCI (transmission configuration indication, transport configuration indication) state for the target SpCell.

As one embodiment, in step S5105, performing first signaling includes applying a TCI (transmission configuration indication, transport configuration indication) state associated with the target SpCell.

As one embodiment, in step S5105, performing first signaling includes applying a unified TCI state.

As an embodiment, the first node U01 performs feedback confirmation after receiving the first signaling.

As an embodiment, the first signaling is included in an rrcrecon configuration message.

As an embodiment, when the execution of the first signaling is not dependent on the reception of the second signaling, the first node U01 initiates a random access to the target SpCell when executing the first signaling or after step S5105.

As an embodiment, the first signaling is used to configure the first signal.

As an embodiment, when the execution of the first signaling is independent of the reception of the second signaling, initiating a random access procedure for the target SpCell accompanying the execution of the first signaling; when the execution of the first signaling depends on the reception of the second signaling, a first signal is transmitted, and a random access procedure for the target SpCell is initiated along with the transmission of the first signal.

As an embodiment, when the execution of the first signaling depends on the reception of the second signaling, the execution of the first signaling is not accompanied by a random access procedure for the target SpCell.

As an embodiment, the first signal is sent after the first signaling and before the second signaling.

As an embodiment, the first signal is used for reporting measurement results or reporting recommended target cells or recommended reference signal resources.

As an embodiment, the first signaling comprises a first threshold value, which is used to control the transmission of the first signal.

As an embodiment, the first signaling indicates a random access resource for the target SpCell; a random access procedure for the target SpCell is initiated on a random access resource for the target SpCell indicated by the first signaling.

As an embodiment, the first signal is used to trigger the second signal.

As an embodiment, the first node U01 reports a failure indication to a higher layer as a response to expiration of the third timer, which is a timer of the MAC layer.

As an embodiment, the second signaling is used to indicate that the first signaling is performed.

As an embodiment, the first signal is used to report measurement results or recommended target cells or recommended reference signal resources.

As an embodiment, the first node U01 sends an RRC connection reestablishment request message on the assumption that the second signaling is not received.

As an embodiment, the first node U01 does not send an RRC connection reestablishment request message when the second signaling is received.

As an embodiment, the first timer is not stopped on the assumption that the second signaling is not received.

As an embodiment, on the assumption that the second signaling is not received, the first timer is not stopped unless a suitable cell or a suitable L2U 2N relay UE is selected.

As an embodiment, when the second signaling is received, i.e. when step S5104 occurs, the first timer is stopped even if the first node U01 does not select a suitable cell and does not select a suitable L2U 2N relay UE.

As an embodiment, the first node U01 detects a radio link failure, and triggers step S5103 when detecting the radio link failure.

As an embodiment, the radio link failure detected by the first node U01 is for MCG.

As an embodiment, the T310 timer of the first node U01 expires, triggering the radio link failure.

As a sub-embodiment of this embodiment, the T310 timer is associated with the MCG.

As an embodiment, the RLC of the first node U01 reaches the maximum number of retransmissions, triggering the radio link failure.

As an embodiment, the random access of the first node U01 is problematic, triggering the radio link failure.

As an embodiment, the first node U01 does not detect a radio link failure when receiving the first signaling.

As an embodiment, the first node U01 does not detect a radio link failure of the MCG when receiving the first signaling.

As one example, step S5105 is performed successfully.

As an embodiment, the first node U01 determines that the first signaling fails to perform successfully, and initiates RRC connection reestablishment as a response to the first signaling failing to perform successfully.

As an embodiment, step S5105 is not performed successfully, and triggers the first node U01 to initiate RRC connection reestablishment.

As an embodiment, the performing of the first signaling includes: the first signaling is deleted.

As an embodiment, the performing of the first signaling includes: the state variables comprising the first signaling are deleted.

As an embodiment, the performing of the first signaling includes: state variables including CHO are deleted.

As one embodiment, the first signaling not being successfully performed includes: the first signaling is deleted.

As one embodiment, the first signaling not being successfully performed includes: the state variables comprising the first signaling are deleted.

As one embodiment, the first signaling not being successfully performed includes: state variables including CHO are deleted.

As an embodiment, the first signaling is successfully executed, triggering deletion of the first signaling.

As an embodiment, the execution of the first signaling is successful, triggering the deletion of the state variable comprising the first signaling.

As an embodiment, the execution of the first signaling is successful, triggering the deletion of the state variable comprising CHO.

As an embodiment, the performing of the first signaling includes: saving a second indication, and when the second indication is not saved, in RRC connection reestablishment, performing the first signaling if the selected cell is the target SpCell; when the second indication is saved, in RRC connection reestablishment, the first signaling is not performed if the selected cell is the target SpCell.

As a sub-embodiment of this embodiment, when the second indication is saved, in RRC connection reestablishment, an RRC reestablishment request is sent for the target SpCell if the selected cell is the SpCell.

Example 6

Embodiment 6 illustrates a schematic diagram of a signaling format according to one embodiment of the present application, as shown in fig. 6.

Field1, field2, field11, field12, field21 in FIG. 6 are all domains.

As an embodiment, the format of the RRC message of the present application is based on the relevant specifications of ISO asn.1.

Information element1, information element2, information element11, and information element12 in fig. 6 are all RRC IEs.

For one embodiment, an RRC message includes one or more RRC IEs (Information Element), such as the RRCMessage-IEs of FIG. 6.

As an example, the RRCMessage-IEs in fig. 6 is an RRC IE.

As an example, the RRCMessage-IEs in fig. 6 are any IEs of an RRC message.

As an example, an RRC IE includes one or more fields, such as field1 and field2 included in the RRCMessage-IEs of fig. 6, such as Information.

As an example, the domain in fig. 6 is applicable to the first domain of the present application.

As an example, the domain in fig. 6 is applicable to the second domain of the present application.

As an example, the domain in fig. 6 is applicable to the third domain of the present application.

As an example, the value of a field in the RRC message may be an RRC IE, for example, field1 in fig. 6 is information element1.

As an example, one field in the RRC message carries or carries one RRC IE, for example, field1 carries or carries information element1 in fig. 6.

As an example, one field in the RRC message corresponds to one RRC IE, for example, field1 corresponds to information element1 in fig. 6.

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

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

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

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

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

As an embodiment, the meaning that the first domain is spCellConfig includes that the name of the first domain is or includes "spCellConfig".

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

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

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

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

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

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

As an embodiment, the first domain of the first signaling comprises a reconfigurationwisync, whether or not the execution of the first signaling depends on a second signaling.

As an embodiment, the execution of any signaling in the present application includes executing all domains that the any signaling includes.

As an embodiment, the meaning of all domains included in performing any of the signaling includes: all subfields, sun Yu, and so on, included in any signaling are performed.

As an embodiment, the meaning of all domains included in performing any of the signaling includes: and executing the cell corresponding to any one domain included in any signaling.

As an embodiment, the meaning of all domains included in performing any of the signaling includes: all cells included in any one of the signaling are performed.

As an embodiment, the performing of the first signaling in the present application includes performing at least one domain included in the first signaling.

As an embodiment, the arbitrary signaling is RRC signaling.

As an embodiment, the performing of the first signaling comprises performing all cells comprised by the first signaling.

As an embodiment, the performing of the first domain included in the first signaling includes performing a cell corresponding to the first domain of the first signaling.

As an embodiment, the execution of the sub-field included in the first domain included in the first signaling includes executing a cell corresponding to the sub-field included in the first domain of the first signaling.

As an embodiment, the performing of the first signaling in the present application includes performing at least one cell included in the first signaling.

Example 7

Embodiment 7 illustrates a schematic diagram of second signaling indicating to perform first signaling according to an embodiment of the present application, as shown in fig. 7.

As an embodiment, the second signaling indicates to switch to the target SpCell.

As an embodiment, the second signaling indicates to perform the first signaling.

As an embodiment, the second signaling comprises an identity, or configuration index, of the first signaling.

As one embodiment, the second signaling indicates a first reference signal resource associated with the target SpCell.

As an embodiment, the second signaling indicates an identity of a cell group to which the target SpCell belongs.

As one embodiment, the second signaling indicates an identity or index of an event or condition associated with the first signaling.

As an embodiment, the second signaling indicates an identity or configuration index, which is associated with the first signaling.

As an embodiment, the second signaling indicates an identity or configuration index, the first identity or configuration index being included in the first signal.

As an embodiment, the second signaling implicitly indicates the first signaling.

As an embodiment, the second signaling is associated with the first signaling, and receipt of the second signaling indicates execution of the first signaling.

As an embodiment, the logical channel identity of the second signaling is used to determine to perform the first signaling.

As an embodiment, the configuration corresponding to the first candidate SpCell indicated by the second signaling belongs to the first signaling, and selecting the first candidate SpCell as the target SpCell triggers execution of the first signaling.

As an embodiment, the second signaling indicates a first candidate target SpCell and a second candidate target SpCell.

As an embodiment, the first signaling is for the first candidate target SpCell.

As an embodiment, the fifth field included in the first signaling is for the second candidate target SpCell.

As a sub-embodiment of this embodiment, the third domain is or includes a spCellConfig.

As an embodiment, a signaling other than the first signaling, for example the third signaling, is directed to the second candidate target SpCell.

As an embodiment, the third signaling is signaling of the RRC layer.

As an embodiment, the third signaling comprises a partial field in an rrcrecon configuration message.

As an embodiment, the third signaling includes CellGroupConfig.

As an embodiment, the third signaling comprises a configuration for the second target SpCell.

As an embodiment, the first node arbitrarily selects the first candidate SpCell or the second candidate SpCell as the target SpCell.

As an embodiment, the first node preferentially selects the first candidate SpCell as the target SpCell from the first candidate SpCell or the second candidate SpCell.

As an embodiment, the second signaling is or includes a field in a DCI.

As a sub-embodiment of this embodiment, the one DCI is one of formats 0_1,0_0, 1_0.

As a sub-embodiment of this embodiment, the one DCI is a name of a format including "2_".

As a sub-embodiment of this embodiment, the one DCI is a name of a format including "3_".

As a sub-embodiment of this embodiment, the one DCI is a name of a format including "4_".

As a sub-embodiment of this embodiment, the one DCI is a name of a format including "5_".

As an embodiment, the first signal is one UCI on a specific PUCCH (physical uplink control channel ) resource.

As a sub-embodiment of this embodiment, the specific PUCCH resource is a PUCCH resource configured by a serving cell of the first node.

As a sub-embodiment of this embodiment, the specific PUCCH resource is a PUCCH resource configured by a serving cell of the first node for transmitting the first signal.

As an embodiment, the second signaling is a PDCCH order.

As one embodiment, the resources indicated by the second signaling are associated with the target SpCell.

As a sub-embodiment of this embodiment, the resource indicated by the second signaling is associated with the first signaling, the first node performs the first signaling upon receiving the second signaling indicating the resource.

As a sub-embodiment of this embodiment, the first node performs the first signaling upon receiving the second signaling indicating the resource.

As one embodiment, the first signal indicates the first signaling and the second signaling is associated with the first signal.

As a sub-embodiment of this embodiment, the second signaling is received, and then the signaling indicated by the first signal associated with the second signaling, i.e. the first signaling, is performed.

As a sub-embodiment of this embodiment, the second signaling is associated with the first signal by an identity or identifier.

As a sub-embodiment of this embodiment, the second signaling is associated with the first signal through a resource.

As a sub-embodiment of this embodiment, the second signaling is associated with the first signal by way of a pre-configuration.

As a sub-embodiment of this embodiment, the second signaling is associated with the first signal pass spatial parameters.

As a sub-embodiment of this embodiment, the second signaling is associated with the first signal by a parameter or identity of the same cell group.

Example 8

Embodiment 8 illustrates a schematic diagram in which first signaling is used to configure a first signal according to one embodiment of the present application, as shown in fig. 8.

As an embodiment, the first signaling indicates resources occupied by the first signal.

As an embodiment, the first signaling indicates a maximum number of items included in the first signal.

As an embodiment, the first signaling indicates a set of candidate spcells that the first signal can recommend.

As an embodiment, the first signaling indicates a reference signal resource for which a measurement result included in the first signal is directed.

As an embodiment, the first signaling indicates an identity or index of candidate spcells recommended by the first signal.

As an embodiment, the first signaling indicates an identity or index of a reference signal resource recommended by the first signal.

As an embodiment, the first signaling indicates whether the first signal comprises a recommended candidate SpCell.

As an embodiment, the first signaling indicates whether the first signal comprises an identity or an index of recommended reference signal resources.

As an embodiment, the first signaling indicates a trigger condition of the first signal.

As an embodiment, the triggering condition of the first signal includes: time triggering.

As an embodiment, the triggering condition of the first signal includes: and triggering an event.

As an embodiment, the triggering condition of the first signal includes: the quality of the current serving cell is below a first threshold.

As an embodiment, the triggering condition of the first signal includes: the measurement result of the configured first reference signal resource is lower than a first threshold.

As an embodiment, the triggering condition of the first signal includes: the measurement result of the configured first reference signal resource is lower than a first threshold value and lasts for a certain time.

As an embodiment, the triggering condition of the first signal includes: the measurement result of the configured first reference signal resource is lower than a first threshold value, and the measurement result of the reference signal resource in the configured second reference signal resource set is higher than a second threshold value.

As an embodiment, the triggering condition of the first signal includes: the measurement result of the configured first reference signal resource is lower than a first threshold value, and the measurement result of the reference signal resource in the configured second reference signal resource set is higher than a second threshold value for a certain time.

As an embodiment, the triggering condition of the first signal includes: the measurement result of the configured first reference signal resource is lower than a first threshold value, and the measurement result of the reference signal resource in the configured second reference signal resource set exceeds the measurement result of the first reference signal resource by at least XdB.

As an embodiment, the triggering condition of the first signal includes: the measurement result of the configured first reference signal resource is below a first threshold and the measurement result of the reference signal resource in the configured second reference signal resource set exceeds the measurement result of the first reference signal resource by at least XdB for a certain time.

As one embodiment, the first signaling indicates the X, where X is a real number.

As an embodiment, the first signaling indicates the first threshold.

As an embodiment, the first signaling indicates the second threshold.

As an embodiment, the first signaling indicates the certain time.

As an embodiment, the first signaling configuration is accompanied by a timer from which the transmission of the first signal starts.

As an embodiment, the first signaling controls a timer of the first signaling.

As an embodiment, the first signaling configures a timer triggered by the first signal.

As an embodiment, the first signaling configures a timer triggered by the second signaling.

As one embodiment, the first reference signal resource is used for radio link monitoring.

As an embodiment, the first reference signal resource is used for beam failure detection.

As one embodiment, the second set of reference signal resources is used for radio link monitoring.

As one embodiment, the second set of reference signal resources is used for beam failure detection.

As an embodiment, the second set of reference signal resources is configured independently of the reference signal resources used for radio link monitoring.

As an embodiment, the second set of reference signal resources is configured independently of the reference signal resources used for beam failure detection.

As an embodiment, the first reference signal resource is configured independently of the reference signal resource used for radio link monitoring.

As an embodiment, the first reference signal resource is configured independently of the reference signal resource used for beam failure detection.

As an embodiment, the first signaling indicates whether to allow selection of other candidate spcells after failing to perform the first signaling.

As an embodiment, the first signaling indicates whether RRC connection reestablishment is allowed to be not performed.

As an embodiment, the first signaling indicates whether or not RRC connection reestablishment is allowed not to be performed immediately.

As an embodiment, the first signaling indicates whether the evaluation of CHO (conditional handover ) is allowed to be performed after the first signal is sent.

As an embodiment, the first signaling indicates whether CHO evaluation is allowed to be performed after receiving the second signaling.

As an embodiment, the first signaling indicates whether or not to allow evaluation of CPC (conditional PSCell Change ) after transmission of the first signal.

As an embodiment, the first signaling indicates whether or not to allow evaluation of CPC to be performed after receiving the second signaling.

As an embodiment, the first signaling indicates whether a recovery procedure based on the first signaling is supported.

As an embodiment, the first signaling indicates whether a recovery procedure performed based on signaling that relies on one signaling trigger is supported.

As an embodiment, the first signaling indicates whether L1L2 mobility based recovery procedures are supported.

As an embodiment, the first signaling indicates timing assistance information of the target SpCell.

As an embodiment, the second signaling indicates timing assistance information of the target SpCell.

As an embodiment, when the execution of the first signaling depends on the second signaling, the first signaling does not include uplink random access resources for the target SpCell; when the execution of the first signaling is independent of the second signaling, the first signaling includes uplink random access resources for the target SpCell.

As an embodiment, when the execution of the first signaling depends on the second signaling, the execution of the first signaling does not stop the evaluation for radio link failure.

As an embodiment, the first signal comprises an identity or index of a reference signal in the second set of reference signals.

As an embodiment, the first signal does not comprise an identity or index of the target SpCell.

As an embodiment, the first signal has a magnitude of 0.

As an embodiment, the first signal has a magnitude greater than 0.

As an embodiment, the priority of the first signal is the highest one of the MAC CEs.

As an embodiment, the first signal comprises only a MAC subheader.

As an embodiment, the first signaling is used to configure the first measurement report, including: and configuring the sending time of the first measurement report.

As an embodiment, the first signaling is used to configure the first measurement report, including: a measurement quantity of the first measurement report, e.g. RSRP, is configured.

As an embodiment, the first signaling is used to configure the first measurement report, including: and configuring the precision of the first measurement report.

As an embodiment, the first signaling is used to configure the first measurement report, including: and configuring a cell for which the first measurement report is directed.

As an embodiment, the first signaling is used to configure the first measurement report, including: and configuring reference signal resources for which the first measurement report is aimed.

As an embodiment, the first signaling is used to configure the first measurement report, including: the identity for which the first measurement report is configured.

As an embodiment, the first signaling is used to configure the first measurement report, including: a Time To Trigger (TTT) of the first measurement report is configured.

As an embodiment, the first measurement report does not correspond to any measurement object.

As an embodiment, the first measurement report comprises L1-RSRP.

Example 9

Embodiment 9 illustrates a schematic diagram in which a first signal is used to report measurement results or recommended target cells or recommended reference signal resources, as shown in fig. 9, according to one embodiment of the present application.

As an embodiment, the first signal comprises a measurement result.

As an embodiment, the serving cell of the first node configures the first measurement.

As one embodiment, the first measurement is an L1 measurement.

As an embodiment, the first measurement is a measurement for a first set of reference signal resources.

As an embodiment, the serving cell of the first node configures the first measurement through the first signaling.

As an embodiment, the first measurement comprises measuring RSRP of L1.

As one embodiment, the first measurement includes acquiring channel state information.

As an embodiment, the first signal reports the result of the first measurement.

As an embodiment, the first signal is sent only after the first measurement is completed.

As an embodiment, the first measurement is periodic.

As an embodiment, the first signal is also periodically transmitted.

As an embodiment, the first signal is also periodically transmitted when the trigger condition is met.

As an embodiment, the triggering condition comprises that the quality of the current cell is below a given threshold.

As an embodiment, the triggering condition comprises the quality of the target cell being above another given threshold.

As an embodiment, the first measurement result comprises measurements for a plurality of cells.

As an embodiment, the first measurement is for the PCIs of a plurality of cells.

As an embodiment, the first signal comprises a recommended target cell.

As an embodiment, the first signal indicates an identity of the target cell or an index of the target cell.

As a sub-embodiment of this embodiment, the first signal does not comprise a measurement result.

As a sub-embodiment of this embodiment, the index of the target cell is an index in configuring the first measurement.

As a sub-embodiment of this embodiment, the index of the target cell is an index indicated by the first signaling.

As a sub-embodiment of this embodiment, the index of the target cell in the first signal is the same as the index in the configuration of the first measurement.

As an embodiment, the first node determines a recommended target cell based on the result of the first measurement.

As an embodiment, the first node determines the recommended target cell according to parameters of conditions or criteria configured by the first signaling.

As an embodiment, the first node determines the recommended target cell according to S criteria.

As an embodiment, the first node determines the recommended target cell according to an internal algorithm.

As an embodiment, the first signal indicates a plurality of recommended target cells.

As an embodiment, the target SpCell is one of the plurality of target cells.

As an embodiment, the target SpCell is a target cell indicated by the first signal.

As an embodiment, the recommended reference signal resource corresponds to a reference signal.

As an embodiment, the first signal comprises an index or identity of recommended reference signal resources.

As an embodiment, the first signal comprises recommended reference signal resources including CSI-RS resources.

As an embodiment, the first signal comprises recommended reference signal resources comprising SSB resources.

As an embodiment, the first signal comprises recommended reference signal resources belonging to the first set of reference signal resources.

As an embodiment, the index of the first signal comprising recommended reference signal resources is an index of the recommended reference signal resources in the first set of reference signal resources.

As an embodiment, each reference signal resource in the first set of reference signal resources is associated with a cell identity.

As an embodiment, each reference signal resource in the first set of reference signal resources is mapped with a cell identity.

As an embodiment, the first signal indicates the recommended target cell by indicating an identity or index of the measurement configuration.

As an embodiment, the first signal indicates recommended reference signal resources by indicating an identity or index of a measurement configuration.

As an embodiment, the first signal implicitly indicates the recommended target cell.

As an embodiment, the first signal implicitly indicates the recommended reference signal resource.

As an embodiment, the first signal may be used for beam failure recovery.

As an embodiment, the MAC CE name included in the second signaling includes L1L2.

As an embodiment, the MAC CE name included in the second signaling includes L2.

As an embodiment, the MAC CE name included in the second signaling includes Mobility.

As an embodiment, the MAC CE name included in the first signal includes L1L2.

As an embodiment, the MAC CE name included in the first signal includes L2.

As an embodiment, the MAC CE name included in the first signal includes Mobility.

As an embodiment, the MAC CE name included in the first signal includes a BFR.

As an embodiment, the first signal may include both a target cell for PCell and a target cell for PSCell.

As an embodiment, the first signal may include only one of a target cell for PCell and a target cell for PSCell.

As an embodiment, the recommended target cell or target cells indicated by the first signal are candidate target cells.

As an embodiment, the first signal includes a first indication field for indicating whether the recommended target cell is a target cell for a PCell or a target cell for a PSCell.

As a sub-embodiment of this embodiment, the first indication field occupies one bit.

As an embodiment, the first signal may indicate both recommended candidate cells and recommended reference signal resources.

As an embodiment, the recommended reference signal resource is also a recommended reference signal.

As an embodiment, one of the first signal and the second signal is DCI and the other is MAC CE.

As an embodiment, the first signal and the second signal are both MAC CEs.

As an embodiment, the first signaling indicates that random access resources for the target SpCell are valid within a first window.

As an embodiment, the first node starts a third timer accompanying the transmission of the first signal.

As an embodiment, the execution of the first signaling does not involve nor accompany a random access procedure before the expiration of the third timer.

As an embodiment, the first node initiates random access to the target cell following the execution of the first signaling after expiration of the third timer.

As an embodiment, the first node stops sending signals for reporting measurement results or recommended target cells or recommended reference signal resources in response to receiving the second signaling.

As a sub-embodiment of this embodiment, the stop transmission refers to stopping transmission during operation of the second timer.

As an embodiment, in response to receiving the second signaling, the first node stops sending MAC CEs with the same names as the MAC CEs included in the first signal.

As an embodiment, in response to receiving the second signaling, the first node stops transmitting MAC PDUs identical to the logical channels used by the first signal.

As an embodiment, the first node stops sending retransmissions or copies of the first signal in response to receiving the second signaling.

As an embodiment, the first node cancels the triggered L1 measurement report procedure in response to receiving the second signaling.

As an embodiment, the first node cancels a recommended cell or recommended reference signal resource reporting procedure in response to receiving the second signaling.

Example 10

Embodiment 10 illustrates a schematic diagram in which the reception of the second signaling is used to stop the first timer according to one embodiment of the present application, as shown in fig. 10.

As an embodiment, the second signaling triggers stopping of the first timer.

As one embodiment, the second signaling instructs the target SpCell to trigger stopping the first timer.

As an embodiment, the first timer is stopped when the second signaling is received.

As an embodiment, the second signaling is physical layer control information, and after receiving the second signaling, the physical layer of the first node sends a first indication to a higher layer, where the first indication is used to indicate that the second signaling is received.

As an embodiment, the higher layer comprises an RRC layer.

As an embodiment, the receiving of the first indication triggers stopping of the first timer.

As one embodiment, the first timer is stopped upon receiving the first indication.

As one embodiment, the receiving of the sentence second signaling is used to stop the meaning of the first timer includes: the reception of the second signaling results in stopping the first timer.

As an embodiment, the second signaling indicates a handover.

As an embodiment, the second signaling indicates to apply the first signaling.

As an embodiment, the second signaling indicates the first domain comprised by applying the first signaling.

As an embodiment, the second signaling indicates a reconfiguration wishsync included in applying the first signaling.

As one embodiment, the receiving of the sentence second signaling is used to stop the meaning of the first timer includes: the first timer is running before receiving the second signaling; and stopping the first timer when the second signaling is received.

As one embodiment, the receiving of the sentence second signaling is used to stop the meaning of the first timer includes: if the second signaling is not received, the stopping of the first timer is only related to the selection of a suitable cell or the selection of a suitable L2U 2N relay UE.

As an embodiment, the suitable cell comprises a suitable NR cell.

As an embodiment, the suitable cells include cells of suitable other access technologies.

Example 11

Embodiment 11 illustrates a schematic diagram in which the execution of the first signaling is used to stop the first timer according to one embodiment of the present application, as shown in fig. 11.

As an embodiment, the performing of the first signaling comprises stopping the first timer.

As an embodiment, the first signaling indicates to stop the first timer.

As one embodiment, the performing of the first signaling includes stopping the first timer and the second timer.

As one embodiment, the performing of the sentence first signaling is used to stop the meaning of the first timer comprises: before executing the first signaling, the first timer is running; the first timer is stopped when the first signaling execution is completed.

As one embodiment, the performing of the sentence first signaling is used to stop the meaning of the first timer comprises: execution of the first signaling causes the first timer to stop.

As one embodiment, the performing of the sentence first signaling is used to stop the meaning of the first timer comprises: execution of the first domain included in the first signaling triggers stopping of the first timer.

As one embodiment, the performing of the sentence first signaling is used to stop the meaning of the first timer comprises: execution of the first domain included in the first signaling includes stopping the first timer.

As one embodiment, the performing of the sentence first signaling is used to stop the meaning of the first timer comprises: execution of the reconfiguration withsync included in the first signaling triggers stopping of the first timer.

As one embodiment, the performing of the sentence first signaling is used to stop the meaning of the first timer comprises: the performing of the reconfigurationWithSync included in the first signaling includes stopping the first timer.

As one embodiment, the performing of the sentence first signaling is used to stop the meaning of the first timer comprises: if the first signaling is not performed, the stopping of the first timer is only related to the selection of a suitable cell or the selection of a suitable L2U 2N relay UE.

As an embodiment, the suitable cell comprises a suitable NR cell.

Example 12

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

A first receiver 1201 receiving first signaling; the first signaling includes a first Cell identity configured to a target SpCell (Special Cell);

the first receiver 1201 initiates RRC connection reestablishment, the act of initiating RRC (Radio Resource Control ) reestablishment comprising starting a first timer;

the first receiver 1201 receives second signaling after the first signaling; executing the first signaling in response to receiving the second signaling;

As an embodiment, the first receiver 1201 detects a radio link failure;

wherein the behavior detects that a radio link failure is used to trigger the RRC connection re-establishment.

As one embodiment, the first transmitter 1202 transmits a signal, the first signal comprising a first measurement report; the first measurement report is used to trigger the second signaling;

As an embodiment, the first receiver 1201 determines that the first signaling fails to perform successfully, and initiates RRC connection reestablishment in response to the failure of the first signaling to perform successfully.

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 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 1201 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 of example 4.

As an example, the first transmitter 1202 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 13

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

a first receiver 1301 receiving a first conditional reconfiguration; the first conditional reconfiguration includes a target domain, the first conditional reconfiguration including the target domain being used to determine that MAC is not reset nor spCellConfig is released when RRC connection reestablishment is initiated;

The first receiver 1301 initiates RRC connection reestablishment, the act of initiating RRC (Radio Resource Control ) reestablishment comprising starting a first timer;

the first receiver 1301 receives and executes a first signaling, where the first signaling includes a reconfigurationWithSync field, and the first signaling includes a first Cell identity configured to a target SpCell (Special Cell);

wherein the first signaling is signaling of an RRC layer; the first signaling includes a first domain; the first domain is used for configuring the target SpCell, and the first domain is SpCellConfig; execution of the first signaling includes stopping the first timer; expiration of the first timer triggers entry into an RRC idle state.

As an embodiment, the act of initiating RRC connection reestablishment is performed after the first conditional reconfiguration.

As an embodiment, the first timer is in an operating state when the first signaling is received.

As an embodiment, the first signaling is received after the act initiates RRC connection reestablishment.

As one embodiment, the first condition reconfiguration includes a first condition and configuration information associated with the first condition, the first condition reconfiguration including the configuration information associated with the first condition being performed when the first condition is satisfied; the first condition includes at least one measurement event.

As an embodiment, the at least one measurement event includes at least one of event A3, event A4, event A5, event T1, event L1.

As an embodiment, the configuration information comprises an rrcrecon configuration message in a container.

As an embodiment, the first conditional reconfiguration is a conditional handover.

As an embodiment, the first signaling is used to indicate a cell handover.

As one embodiment, when the first conditional reconfiguration does not include the target domain, MAC is reset and spCellConfig is released upon initiating RRC connection reestablishment.

As an embodiment, when the first conditional reconfiguration includes the target domain, the MAC is not reset nor the spCellConfig is released when RRC connection reestablishment is initiated.

As an embodiment, the act of initiating RRC connection reestablishment includes performing at least cell selection.

As an embodiment, the first receiver 1301 detects a radio link failure;

For one embodiment, the act of initiating RRC connection reestablishment includes suspending SRB0 and all RBs (radio bearers) other than MRB for the broadcast.

As an embodiment, the reception of the first signaling is used to stop cell selection.

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

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 sidelink communication node.

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

As one example, the first transmitter 1302 includes 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 14

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

a first receiver 1401 which receives first signaling; the first signaling includes a first Cell identity configured to a target SpCell (Special Cell);

the first receiver 1401 receives second signaling after the first signaling;

wherein the first signaling is signaling of an RRC layer; the first signaling includes a first domain; the first domain is used for configuring the target SpCell; the second signaling is control signaling of a MAC (Medium Access Control ) layer or control information of a physical layer; the execution of the first signaling depends on the second signaling and the running state of the timers in the first set of timers; when all timers in the first set of timers are not running, the second signaling triggers execution of the first signaling; the second signaling does not trigger execution of the first signaling when at least one timer of the first set of timers is running; when the second signaling is not received, the first signaling is not performed; the first set of timers includes at least a first timer; the starting condition of the first timer comprises initiating RRC connection reestablishment; the stop condition of the first timer includes selection of a suitable cell; expiration of the first timer triggers entry into an RRC idle state.

As an embodiment, the first receiver 1401 detects a radio link failure; in response to detecting a radio link failure, initiating an RRC connection reestablishment, the act of initiating an RRC connection reestablishment including starting the first timer.

As an embodiment, the first signaling comprises a second domain; the first signaling including the second domain being used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor a release spCellConfig; the second domain is attemptcond reconfig.

As an embodiment, the first signaling comprises a third domain; the first signaling including the third domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor a release spCellConfig; the third domain is a domain other than attemptcond reconfig.

As an embodiment, the timers in the first set of timers are all MCG-specific.

As an embodiment, the first set of timers comprises a third timer.

As an embodiment, the starting condition of the third timer includes that an RRC reestablishment request message is sent.

As an embodiment, the stopping condition of the third timer includes receiving an RRC setup message or receiving an RRC reestablishment message.

As an embodiment, the expiration of the third timer triggers entry into an RRC idle state.

As an embodiment, the first set of timers comprises a fourth timer.

As an embodiment, the starting condition of the fourth timer includes receiving an RRC reconfiguration message including a reconfiguration withsync.

As an embodiment, the starting condition of the fourth timer includes successful completion of the random access procedure for the corresponding SpCell.

As an embodiment, expiration of the fourth timer triggers RRC connection reestablishment.

As an embodiment, the fourth timer is T304.

As an embodiment, the first set of timers includes a fifth timer, which is a timer of the MAC layer.

As an embodiment, the first set of timers includes a sixth timer, which is a timer of the RRC layer.

As one embodiment, a first transmitter 1402 sends a signal, the first signal comprising a first measurement report; the first measurement report is used to trigger the second signaling;

As an embodiment, the first receiver 1401 determines that the first signaling fails to perform successfully, and initiates RRC connection reestablishment in response to the failure of the first signaling to perform successfully.

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

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 sidelink communication node.

As an example, the first receiver 1401 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 one example, the first transmitter 1402 includes 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 embodiment 4.

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

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

Claims

1. A first node for wireless communication, comprising:

a first receiver that receives a first signaling; the first signaling includes a first cell identity configured to a target SpCell (specialty cell);

the first receiver initiating RRC connection reestablishment, the act of initiating RRC (radio resource control) reestablishment including starting a first timer;

wherein the first signaling is signaling of an RRC layer; the first signaling includes a first domain; the first domain is used for configuring the target SpCell, and the first domain is SpCellConfig; the second signaling is a control signaling of a MAC (medium access control) layer or control information of a physical layer; the reception of the second signaling is used to stop the first timer or the execution of the first signaling is used to stop the first timer; expiration of the first timer triggers entry into an RRC idle state.

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

the first signaling includes a second domain; the first signaling including the second domain being used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor a release spCellConfig; the act of initiating RRC connection reestablishment includes performing at least cell selection; the second domain is attemptcond reconfig.

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

the first signaling includes a third domain; the first signaling including the third domain is used to determine that the behavior initiated RRC connection reestablishment does not include a MAC reset nor a release spCellConfig; the act of initiating RRC connection reestablishment includes performing at least cell selection; the third domain is a domain other than attemptcond reconfig.

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

the first receiver detects a radio link failure;

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

the reception of the second signaling is used to stop cell selection.

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

whether the execution of the first signaling depends on whether the second signaling is used to determine whether the execution of the first signaling includes starting a second timer; when the execution of the first signaling depends on the second signaling, the execution of the first signaling does not include starting a second timer; when the execution of the first signaling is independent of the second signaling, the execution of the first signaling includes starting a second timer; expiration of the second signaling is used to trigger RRC connection reestablishment; the stop condition of the second timer includes successful completion of a random access procedure for the target SpCell.

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

a first transmitter that transmits a signal, the first signal including a first measurement report; the first measurement report is used to trigger the second signaling;

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

And the first receiver determines that the first signaling fails to execute successfully, and initiates RRC connection reestablishment as a response that the first signaling fails to execute successfully.

9. The first node according to any of the claims 1 to 8, characterized in that,

the action initiates RRC connection reestablishment including suspending SRB0 and all RBs other than MRB for broadcast.

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

initiating an RRC connection reestablishment, the act initiating an RRC (radio resource control) reestablishment including starting a first timer;