Method and apparatus in communication node used for wireless communication

Abstract

The invention discloses a method and an apparatus in a communication node used for wireless communication. A communication node receives a first RRC message, wherein the first RRC message configures a timer T316; determining that the MCG wireless link fails; as a response to the determination of the MCG wireless link failure, the execution of the MCG link recovery process depends on at least one of a cell DTX or a cell DRX of a first cell, and the first cell belongs to an SCG; when at least one of the cell DTX or the cell DRX of the first cell is not configured, executing the MCG link recovery process; the MCG link recovery process comprises the step of sending an MCG failure information message through the SCG; the first node is configured with at least one of spl it SRB1 or SRB3; neither the MCG nor the SCG is hung up; the SCG is not deactivated. According to the method, the performance of executing the MCG link recovery process is improved.

Description

Technical Field

[0001] The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly to a method and apparatus for Master Cell Group (MCG) link recovery. Background Art

[0002] 3GPP Release 16 introduces MCG link recovery for dual connectivity (DC). When MCG detects radio link failure (RLF), if the UE (User Equipment) is configured with split SRB1 (Signalling Radio Bearer 1) or SRB3 (Signalling Radio Bearer 3) and the MCG (Master Cell Group) and SCG (Secondary Cell Group) are not suspended (neither MCG nor SCG transmission issuspended), and the SCG is not deactivated, and is configured with timer T316, and timer T316 is not running, then the MCG link recovery process is initiated to continue the RRC connection without re-establishment; during the MCG link recovery process, the UE sends a MCGFailureInformation message through the SCG and receives a response message to the MCGFailureInformation message, the response message includes, for example, an RRCRelease message or an RRCReconfiguration message carrying reconfigurationwithSync for PCell or a MobilityFromNRCommand message.

[0003] 3GPP Release 18 introduces cell-based DRX (Discontinuous Reception) / DTX (Discontinuous Transmission) for Network Energy Saving (NES). When a serving cell is in the active period of cell DTX, the UE monitors the PDCCH (Physical Downlink Control Channel) on this serving cell. When the serving cell is not in the active period of cell DTX, the UE does not monitor the PDCCH on this serving cell except in specific circumstances. In specific circumstances, the UE monitors the PDCCH on this serving cell. Specific circumstances include:

[0004] -. If any drx-RetransmissionTimerDL, drx-RetransmissionTimerUL or drx-RetransmissionTimerSL on a serving cell in the serving cell's DRX group is running; or

[0005] -. If ra-ContentionResolutionTimer or msgB-ResponseWindow is running; or

[0006] - If a Scheduling Request (SR) is sent on the PUCCH (Physical uplink control channel) and is pending; or

[0007] - if a PDCCH indicating a new transmission addressed to the C(cell)-RNTI (Radio Network Temporary Identifier) of the MAC entity has not been received after successfully receiving a Random Access Response (Random Access Response) for a Random Access Preamble (Random Access Preamble); wherein the Random Access Preamble was not selected by the MAC entity from a CBRA (Contention-based Random Access) preamble; or

[0008] -. If ra-ResponseWindow is running and the serving cell is a SpCell (Special Cell). Summary of the Invention

[0009] Through research, the inventors found that when the UE supports MCG link recovery and network energy saving at the same time, if all or part of the service cells of the SCG are configured with cell DTX or cell DRX, the MCGFailureInformation message sent by the UE may not be received by the network, or, due to the behavioral restrictions of the protocol on the UE's cell DTX or cell DRX, the response to the MCGFailureInformation message cannot be received or cannot be received in time, which in turn leads to delayed completion of the MCG link recovery or failure of the MCG link recovery, affecting the communication performance of the UE.

[0010] In response to the above problems, the present application provides a solution for MCG link recovery. In the description of the above problems, the NR system is used as an example. The present application is also applicable to scenarios such as LTE (Long-Term Evolution) or LTE-A (Long-Term Evolution Advanced) systems, achieving technical effects similar to those of the NR system. Furthermore, although the present application provides a specific implementation method for MR-DC, the present application can also be used in scenarios such as multi-path to achieve technical effects similar to those of MR-DC. Furthermore, adopting a unified design solution for different scenarios can also help reduce hardware complexity and cost. Furthermore, although the original intention of the present application is for the Uu air interface, the present application can also be used for the PC5 port to achieve technical effects similar to those of the Uu air interface. Furthermore, although the original intention of the present application is for the MCG failure information process, the present application can also be used for other similar link recovery processes, such as the recovery process based on candidate cells, to achieve technical effects similar to those of the MCG failure information process. Furthermore, although the original intention of this application is for the terminal and base station scenario, this application is also applicable to the V2X (Vehicle-to-Everything, Internet of Vehicles) scenario, the communication scenario between the terminal and the relay, and the relay and the base station, to achieve similar technical effects in the terminal and base station scenario. Furthermore, although the original intention of this application is for the terminal and base station scenario, this application is also applicable to the IAB (Integrated Access and Backhaul, integrated access and backhaul) communication scenario, to achieve similar technical effects in the terminal and base station scenario. Furthermore, although the original intention of this application is for the terrestrial network (TN) scenario, this application is also applicable to the non-terrestrial network (NTN) communication scenario, to achieve similar technical effects in the TN scenario. In addition, the use of a unified solution for different scenarios can also help reduce hardware complexity and cost.

[0011] As an embodiment, the interpretation of terminology in this application refers to the definition of 3GPP specification protocol TS36 series.

[0012] As an embodiment, the interpretation of the terms in this application refers to the definition of the 3GPP specification protocol TS38 series.

[0013] As an embodiment, the interpretation of the terms in this application refers to the definitions of the 3GPP specification protocol TS37 series.

[0014] It should be noted that, in the absence of conflict, the embodiments and features in any node of the present application can be applied to any other node. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other.

[0015] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0016] Receive a first RRC (Radio Resource Control) message, wherein the first RRC message configures a timer T316;

[0017] Determine that the MCG radio link has failed;

[0018] In which, as a response to the determination of the failure of the MCG wireless link, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, executing the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the first node is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

[0019] As an embodiment, the execution of the MCG link recovery process refers to: whether to execute the MCG link recovery process.

[0020] As an embodiment, the execution of the MCG link recovery process refers to: whether to perform the first action during the MCG link recovery process.

[0021] As an embodiment, the execution of the MCG link recovery process depends on whether at least one of the cell DTX or the cell DRX of the first cell is configured.

[0022] As an embodiment, the execution of the MCG link recovery process depends on whether at least one of the cell DTX or the cell DRX of the first cell is activated.

[0023] As an embodiment, the execution of the MCG link recovery process depends on whether the first cell is in an active period (Active Period) of at least one of the cell DTX or cell DRX of the first cell.

[0024] As an embodiment, the execution of the MCG link recovery process depends on whether at least one of the cell DTX or the cell DRX of the first cell is configured, and whether at least one of the cell DTX or the cell DRX of the first cell is activated.

[0025] As an embodiment, the execution of the MCG link recovery process depends on whether at least one of the cell DTX or the cell DRX of the first cell is configured, whether at least one of the cell DTX or the cell DRX of the first cell is activated, and whether the first cell is in the active period of at least one of the cell DTX or the cell DRX of the first cell.

[0026] As an embodiment, the problem to be solved by the present application includes: how to avoid delayed completion or failure of the MCG link recovery process when cell DTX or cell DRX of at least one cell of the SCG is configured with at least one of the two.

[0027] As an embodiment, the above method solves the above problem by making the execution of the MCG link recovery process dependent on at least one of the cell DTX or the cell DRX of the first cell.

[0028] As an embodiment, the above method takes into account the impact of at least one of the cell DTX or the cell DRX of the first cell on the execution of the MCG link recovery process.

[0029] As an embodiment, in the above method, when at least one of the cell DTX or the cell DRX of the first cell is not configured, the MCG link recovery process is performed, thereby reducing the protocol impact.

[0030] As an embodiment, the above method improves the success probability of the MCG link recovery process.

[0031] As an embodiment, the above method shortens the interruption delay.

[0032] As an embodiment, the above method reduces signaling overhead.

[0033] As an embodiment, the above method avoids the impact on the UE.

[0034] According to one aspect of the present application, it is characterized in that the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is configured, the RRC connection re-establishment process is executed.

[0035] As an embodiment, the above method is simple to implement.

[0036] As an embodiment, the above method avoids the delay in RRC connection re-establishment caused by the fact that at least one of the cell DTX or the cell DRX of the first cell is configured so that the MCG link recovery process cannot be performed smoothly.

[0037] As an embodiment, the above method shortens the interruption delay.

[0038] As an embodiment, the above method avoids the delay and signaling overhead caused by unnecessary MCG link recovery process.

[0039] According to one aspect of the present application, it is characterized by comprising:

[0040] In response to determining that the MCG radio link has failed, setting a first information block in a first UE variable; wherein the first UE variable includes information related to the MCG radio link failure;

[0041] Among them, the first information block indicates the reason why the MCG link recovery process was not executed; the MCG link recovery process was not executed.

[0042] As an embodiment, the above method is beneficial to network optimization.

[0043] As an embodiment, the above method helps the network obtain relevant information that the MCG link recovery process has not been executed.

[0044] As an embodiment, the above method is conducive to the configuration of the subsequent MCG link recovery process.

[0045] According to one aspect of the present application, it is characterized by comprising:

[0046] receiving a second RRC message, the second RRC message configuring a cell DTX of the first cell; and monitoring a PDCCH of the first cell along with the MCG link recovery process when the cell DTX of the first cell is activated and the first cell is outside an active period of the cell DTX of the first cell;

[0047] Among them, the MCG link recovery process is executed.

[0048] According to one aspect of the present application, it is characterized in that the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: in the MCG link recovery process, whether to execute the first action depends on the at least one of the cell DTX or cell DRX of the first cell; when at least one of the cell DTX or cell DRX of at least the first cell is configured, the first action is executed in the MCG link recovery process; the first action includes considering the at least one of the cell DTX or cell DRX of the first cell as being deactivated.

[0049] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0050] Sending a first RRC message, wherein the first RRC message configures timer T316;

[0051] Among them, as a response to the failure of the MCG wireless link determined by the receiver of the first RRC message, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, the receiver of the first RRC message executes the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the receiver of the first RRC message is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

[0052] According to one aspect of the present application, it is characterized in that the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is configured, the RRC connection re-establishment process is executed.

[0053] According to one aspect of the present application, it is characterized in that as a response to the failure of the MCG wireless link determined by the receiver of the first RRC message, the receiver of the first RRC message sets a first information block in a first UE variable; wherein the first UE variable includes relevant information about the failure of the MCG wireless link; the first information block indicates the reason why the MCG link recovery process was not executed; the MCG link recovery process was not executed.

[0054] According to one aspect of the present application, it is characterized in that the recipient of the first RRC message receives a second RRC message, and the second RRC message configures the cell DTX of the first cell; when the cell DTX of the first cell is activated and the first cell is outside the active period of the cell DTX of the first cell, accompanied by the MCG link recovery process, the recipient of the first RRC message monitors the PDCCH of the first cell; the MCG link recovery process is executed.

[0055] According to one aspect of the present application, it is characterized in that the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: in the MCG link recovery process, whether to execute the first action depends on the at least one of the cell DTX or cell DRX of the first cell; when at least one of the cell DTX or cell DRX of at least the first cell is configured, in the MCG link recovery process, the receiver of the first RRC message executes the first action; the first action includes considering the at least one of the cell DTX or cell DRX of the first cell as being deactivated.

[0056] The present application discloses a first node used for wireless communication, characterized by comprising:

[0057] A first receiver receives a first RRC message, wherein the first RRC message configures a timer T316;

[0058] The first processor determines that the MCG wireless link fails;

[0059] In which, as a response to the determination of the failure of the MCG wireless link, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, executing the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the first node is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

[0060] The present application discloses a second node used for wireless communication, characterized by comprising:

[0061] The second transmitter sends a first RRC message, where the first RRC message configures a timer T316;

[0062] Among them, as a response to the failure of the MCG wireless link determined by the receiver of the first RRC message, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, the receiver of the first RRC message executes the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the receiver of the first RRC message is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

[0063] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0064] Receive a first RRC message, wherein the first RRC message configures a timer T316;

[0065] Determine that the MCG radio link has failed;

[0066] The first processor, in response to the determination of the MCG radio link failure, sets a first information block in a first UE variable; wherein the first UE variable includes relevant information about the MCG radio link failure;

[0067] Among them, the first information block indicates the reason why the MCG link recovery process was not executed; the MCG link recovery process was not executed.

[0068] As an embodiment, the problem to be solved by the present application includes: when the timer T316 is configured, how does the network determine the reason why the UE does not perform the MCG radio link failure?

[0069] As an embodiment, the problem to be solved by the present application includes: when the timer T316 is configured, how the network optimizes the MCG link recovery process.

[0070] As an embodiment, when the MCG link recovery process is not executed, the above method indicates the reason why the MCG link recovery process is not executed through the first information block, thereby solving the above problem.

[0071] As an embodiment, the above method is beneficial to network optimization.

[0072] As an embodiment, the above method helps the network obtain the reason why the MCG wireless link failure was not executed.

[0073] As an embodiment, the above method is beneficial to the network optimization of the MCG link recovery process.

[0074] The present application discloses a first node used for wireless communication, characterized by comprising:

[0075] A first receiver receives a first RRC message, wherein the first RRC message configures a timer T316;

[0076] The first processor determines that the MCG wireless link fails;

[0077] The first processor, in response to the determination of the MCG radio link failure, sets a first information block in a first UE variable; wherein the first UE variable includes relevant information about the MCG radio link failure;

[0078] Among them, the first information block indicates the reason why the MCG link recovery process was not executed; the MCG link recovery process was not executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0080] Figure 1 A flow chart showing communication of a first node according to an embodiment of the present application is shown;

[0081] Figure 2 A schematic diagram showing a network architecture according to an embodiment of the present application is shown;

[0082] Figure 3 A schematic diagram illustrating an embodiment of a radio protocol architecture of a user plane and a control plane according to an embodiment of the present application is shown;

[0083] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0084] Figure 5 shows an implementation flow chart according to an embodiment of the present application;

[0085] Figure 6 shows an implementation flow chart according to another embodiment of the present application;

[0086] Figure 7 shows an implementation flow chart according to yet another embodiment of the present application;

[0087] Figure 8 shows an implementation flow chart according to yet another embodiment of the present application;

[0088] Figure 9 A schematic diagram showing cell DTX of a first cell according to an embodiment of the present application is shown;

[0089] Figure 10 A structural block diagram of a processing device used in a first node according to an embodiment of the present application is shown;

[0090] Figure 11 A structural block diagram of a processing device used in a second node according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0091] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other in any way.

[0092] Example 1

[0093] Example 1 illustrates a flow chart of communication of a first node according to an embodiment of the present application, as shown in the attached figure. Figure 1 As shown. Figure 1 In the figure, each box represents a step. It should be emphasized that the order of the boxes in the figure does not represent the temporal sequence between the steps represented.

[0094] In Example 1, the first node in the present application receives a first RRC message in step 101, and the first RRC message configures timer T316; in step 102, it is determined that the MCG wireless link fails; wherein, as a response to the determination of the MCG wireless link failure, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, the MCG link recovery process is executed; the MCG link recovery process includes sending an MCG failure information message through the SCG; the first node is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

[0095] As an embodiment, the first RRC message is an RRCReconfiguration message.

[0096] As an embodiment, the first RRC message is an RRCConnectionReconfiguration message.

[0097] As an embodiment, the first RRC message indicates that the timer T316 is configured.

[0098] As an embodiment, the first RRC message includes a t316-r16 field, and the t316-r16 field indicates that the timer T316 is set.

[0099] As an embodiment, the first RRC message configures the value of the timer T316.

[0100] As an embodiment, the first RRC message includes a T316-r16 field, and the t316-r16 field configures the value of the timer T316.

[0101] As an embodiment, the determining that the MCG radio link fails refers to: considering that the MCG is detected to have failed the radio link.

[0102] As an embodiment, determining that the MCG radio link fails refers to: determining that the MCG is detected to have failed the radio link.

[0103] As an embodiment, the determining that the MCG radio link fails refers to: assuming that the MCG is detected to have failed the radio link.

[0104] As an embodiment, when T310 of the PCell expires, it is determined that the MCG radio link fails.

[0105] As an embodiment, when T312 of the PCell expires, it is determined that the MCG radio link fails.

[0106] As an embodiment, when T312 of the PCell expires and the cell DTX of the PCell is not configured or the cell DTX of the PCell is configured and the cell DTX of the PCell is not activated, it is determined that the MCG radio link fails.

[0107] As a sub-embodiment of the above embodiment, under the assumption that T312 of the PCell expires and the cell DTX of the PCell is configured and activated, MCG radio link failure is not determined.

[0108] As a sub-embodiment of the above embodiment, the above method avoids triggering unnecessary radio link failures.

[0109] As an embodiment, when T312 of the PCell expires and the cell DTX of the PCell is not configured, it is determined that the MCG radio link fails.

[0110] As a sub-embodiment of the above embodiment, under the assumption that T312 of the PCell expires and cell DTX of the PCell is configured, MCG radio link failure is not determined.

[0111] As a sub-embodiment of the above embodiment, the above method avoids triggering unnecessary radio link failures.

[0112] As an embodiment, when a random access problem indication is received from the MCG MAC while T300, T301, T304, T311 and T319 are not running and the SDT procedure is not ongoing, it is determined that the MCG radio link has failed.

[0113] As an embodiment, when an indication is received from the MCG that the number of RLC retransmissions reaches a maximum value while the SDT process is not in progress, it is determined that the MCG radio link has failed.

[0114] As an embodiment, when T304 is not running while receiving a consistent uplink LBT failure indication from the MCG MAC, it is determined that the MCG radio link has failed.

[0115] As an embodiment, the response to determining that the MCG wireless link has failed refers to: when it is determined that the MCG wireless link has failed.

[0116] As an embodiment, the response to determining that the MCG wireless link has failed refers to: after determining that the MCG wireless link has failed.

[0117] As an embodiment, the determination of MCG wireless link failure triggers the execution of the MCG link recovery process.

[0118] As an embodiment, the MCG link recovery process is to notify the network that the UE has experienced an MCG radio link failure.

[0119] As an embodiment, the MCG link recovery process is to continue the RRC connection without re-establishment.

[0120] As an embodiment, the MCG link recovery procedure is an MCG failure information procedure.

[0121] As an embodiment, the MCG link recovery procedure is a fast MCG link recovery procedure.

[0122] As an embodiment, the at least one of the cell DTX or the cell DRX of the first cell is the cell DTX of the first cell.

[0123] As a sub-embodiment of the above embodiment, the first node is configured with cell DTX of the first cell and cell DRX of the first cell.

[0124] As a sub-embodiment of the above embodiment, the first node is configured with only the former of the cell DTX of the first cell and the cell DRX of the first cell.

[0125] As an embodiment, the at least one of the cell DTX or the cell DRX of the first cell is the cell DRX of the first cell.

[0126] As a sub-embodiment of the above embodiment, the first node is configured with cell DTX of the first cell and cell DRX of the first cell.

[0127] As a sub-embodiment of the above embodiment, the first node is configured with only the latter of the cell DTX of the first cell and the cell DRX of the first cell.

[0128] As an embodiment, the at least one of the cell DTX or the cell DRX of the first cell is the cell DRX of the first cell and the cell DTX of the first cell; the first node is configured with the cell DTX of the first cell and the cell DRX of the first cell.

[0129] As an embodiment, the first cell is any cell in the SCG.

[0130] As an embodiment, the first cell is a cell in the SCG.

[0131] As an embodiment, the first cell is a cell in the SCG and associated with at least one of the split SRB1 or the SRB3.

[0132] As an embodiment, the first cell is a PSCell in the SCG.

[0133] As an embodiment, the first cell is a cell in a DRX group corresponding to the SCG.

[0134] As an embodiment, the first cell is any cell in a DRX group corresponding to the SCG.

[0135] As an embodiment, the SCG consists of only PSCells.

[0136] As an embodiment, the SCG is a PSCell.

[0137] As an embodiment, the SCG consists of a PSCell and at least one SCell.

[0138] As an embodiment, the SCG is a PSCell and at least one SCell.

[0139] As an embodiment, the execution of the MCG link recovery process depends on whether at least one of the cell DTX or the cell DRX of the first cell is configured.

[0140] As an embodiment, the execution of the MCG link recovery process depends on whether at least one of the cell DTX or the cell DRX of the first cell is activated.

[0141] As an embodiment, execution of the MCG link recovery process depends on whether the first cell is in an active period of at least one of the cell DTX or the cell DRX of the first cell.

[0142] As an embodiment, the execution of the MCG link recovery process depends on the state of at least one of the cell DTX or the cell DRX of the first cell within a given time interval.

[0143] As a sub-embodiment of the above embodiment, the length of the given time interval depends on the timer T316.

[0144] As a sub-embodiment of the above embodiment, the length of the given time interval is equal to the timer T316.

[0145] As a sub-embodiment of the above embodiment, the given time interval is a time interval after determining that the MCG radio link fails.

[0146] As a sub-embodiment of the above embodiment, the given time interval is the time interval after determining whether to initiate the MCG link recovery process.

[0147] As a sub-embodiment of the above embodiment, if the first cell is outside the active period of at least one of the cell DTX or the cell DRX of the first cell within the given time interval, the MCG link recovery process is not performed.

[0148] As a sub-embodiment of the above embodiment, if the first cell is in an active period of at least one of cell DTX or cell DRX of the first cell within the given time interval, the MCG link recovery process is performed.

[0149] As a sub-embodiment of the above embodiment, if the first cell is in an active period of at least one of cell DTX or cell DRX of the first cell for at least part of the time within the given time interval, the MCG link recovery process is performed.

[0150] As a sub-embodiment of the above embodiment, if the first cell is in an active period of at least one of cell DTX or cell DRX of the first cell for at least part of the time within the given time interval, the MCG link recovery process is not performed.

[0151] As an embodiment, the execution of the MCG link recovery process depends on whether at least one of the cell DTX or the cell DRX of the first cell is configured, and whether at least one of the cell DTX or the cell DRX of the first cell is activated.

[0152] As an embodiment, the execution of the MCG link recovery process depends on whether at least one of the cell DTX or the cell DRX of the first cell is configured, whether at least one of the cell DTX or the cell DRX of the first cell is activated, and whether the first cell is in the active period of at least one of the cell DTX or the cell DRX of the first cell.

[0153] As an embodiment, the execution of the MCG link recovery process refers to: whether to execute the MCG link recovery process.

[0154] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, which means: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, the MCG link recovery process is executed; when at least one of the cell DTX or cell DRX of at least the first cell is configured, whether to execute the MCG link recovery process needs to consider the influence of at least one of the cell DTX or cell DRX of the first cell.

[0155] As an embodiment, the above method enables the first node to consider the influence of at least one of the cell DTX or cell DRX of the first cell when executing the MCG link recovery process, thereby avoiding failure of the MCG link recovery process.

[0156] As an embodiment, the above method enables the first node to consider the influence of at least one of the cell DTX or cell DRX of the first cell when performing the MCG link recovery process, and perform RRC connection re-establishment in a timely manner.

[0157] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, which means: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, the MCG link recovery process is executed; when at least one of the cell DTX or cell DRX of at least the first cell is configured, whether the MCG link recovery process is executed depends on the UE implementation (is up to UE implementation).

[0158] As an embodiment, the above method reduces protocol impact.

[0159] As an embodiment, the above method improves implementation flexibility.

[0160] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, which means that the MCG link recovery process is executed only when at least one of the cell DTX or cell DRX of the first cell is not configured.

[0161] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, which means: when at least one of the cell DTX or cell DRX of the first cell is not configured, the MCG link recovery process is executed; otherwise, the MCG link recovery process is not executed.

[0162] As an embodiment, "when at least one of the cell DTX or cell DRX of at least the first cell is not configured, the MCG link recovery process is performed" means: when at least one of the cell DTX or cell DRX of the first cell is not activated, the MCG link recovery process is performed.

[0163] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, which means that the MCG link recovery process is executed only when at least one of the cell DTX or cell DRX of the first cell is not activated.

[0164] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, which means: when at least one of the cell DTX or cell DRX of the first cell is not activated, the MCG link recovery process is executed; otherwise, the MCG link recovery process is not executed.

[0165] As an embodiment, the execution of the MCG link recovery process refers to: whether to perform the first action during the MCG link recovery process.

[0166] As an embodiment, when at least one of the cell DTX or the cell DRX of at least the first cell is not configured, the first action is not performed during the MCG link recovery process; when at least one of the cell DTX or the cell DRX of at least the first cell is configured, the first action is performed during the MCG link recovery process.

[0167] As an embodiment, when at least one of the cell DTX or the cell DRX of at least the first cell is not configured, the MCG link recovery process is executed and the first action is not performed during the MCG link recovery process; when at least one of the cell DTX or the cell DRX of at least the first cell is configured, the MCG link recovery process is executed and the first action is performed during the MCG link recovery process.

[0168] As an embodiment, the first action includes considering at least one of the cell DTX or the cell DRX of the first cell as being deactivated.

[0169] As an embodiment, the first action includes activating at least one of cell DTX or cell DRX of the first cell.

[0170] As an embodiment, activating at least one of the cell DTX or cell DRX of the first cell refers to: sending at least one uplink signal, and the at least one uplink signal is activated; at least one of the cell DTX or cell DRX of the first cell.

[0171] As an embodiment, the at least one uplink signal includes a PRACH transmission.

[0172] As an embodiment, the at least one uplink signal is a PRACH transmission.

[0173] As an embodiment, the at least one uplink signal includes a PUSCH transmission.

[0174] As an embodiment, the at least one uplink signal is a PUSCH transmission.

[0175] As an embodiment, the at least one uplink signal includes one PRACH and one PUSCH transmission.

[0176] As an embodiment, the one PUSCH transmission is transmitted via Msg3.

[0177] As an embodiment, the one PUSCH transmission is transmitted via MSGA.

[0178] As an embodiment, the one PRACH transmission indication activates at least one of the cell DTX or the cell DRX of the first cell.

[0179] As an embodiment, the one PUSCH transmission indication activates at least one of the cell DTX or the cell DRX of the first cell.

[0180] As an embodiment, the at least one uplink signal explicitly activates at least one of the cell DTX or the cell DRX of the first cell.

[0181] As an embodiment, the at least one uplink signal implicitly activates at least one of the cell DTX or the cell DRX of the first cell.

[0182] As an embodiment, "when at least one of the cell DTX or the cell DRX of at least the first cell is not configured, the MCG link recovery process is performed" means: when at least one of the cell DTX or the cell DRX of the first cell is not activated, or when the first cell is in the active period of at least one of the cell DTX or the cell DRX of the first cell, the MCG link recovery process is performed.

[0183] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, which means that the MCG link recovery process is executed only when the at least one of the cell DTX or cell DRX of the first cell is not activated, or the first cell is in the active period of the at least one of the cell DTX or cell DRX of the first cell.

[0184] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, which means: when the at least one of the cell DTX or cell DRX of the first cell is not activated, or the first cell is in the active period of the at least one of the cell DTX or cell DRX of the first cell, the MCG link recovery process is executed; otherwise, the MCG link recovery process is not executed.

[0185] As an embodiment, the at least one of the cell DTX or the cell DRX of the first cell is not activated, which means that the at least one of the cell DTX or the cell DRX of the first cell is configured and not activated.

[0186] As an embodiment, the at least one of the cell DTX or the cell DRX of the first cell is not activated, which means that the at least one of the cell DTX or the cell DRX of the first cell is not configured, or is configured and not activated.

[0187] As an embodiment, the first cell is in an active period of at least one of the cell DTX or cell DRX of the first cell, which means that the at least one of the cell DTX or cell DRX of the first cell is configured and activated and the first cell is in an active period of at least one of the cell DTX or cell DRX of the first cell.

[0188] As an embodiment, the at least one of the cell DTX or cell DRX of the first cell is configured to include: the designated RRC signaling is received; the at least one of the cell DTX or cell DRX of the first cell is not configured to include: the designated RRC signaling is not received.

[0189] As an embodiment, the at least one of the cell DTX or cell DRX of the first cell is configured to include: specified RRC signaling is received and signaling indicating the release of the configuration of at least one of the cell DTX or cell DRX of the first cell is not received; the at least one of the cell DTX or cell DRX of the first cell is not configured to include: specified RRC signaling is not received.

[0190] As an embodiment, the designated RRC message is used to configure at least one of the cell DTX or cell DRX of the first cell.

[0191] As an embodiment, the designated RRC signaling includes a cellDTXDRXconfigType field, and the cellDTXDRXconfigType field is set to dtx.

[0192] As an embodiment, the designated RRC signaling includes a cellDTXDRXconfigType field, and the cellDTXDRXconfigType field is set to drx.

[0193] As an embodiment, the designated RRC signaling includes a cellDTXDRXconfigType field, and the cellDTXDRXconfigType is set to Dtxdrx.

[0194] As an embodiment, the designated RRC signaling belongs to a ServingCellConfig IE for the first cell.

[0195] As an embodiment, the designated RRC signaling includes a CellDTXDRX-Config IE, and the CellDTXDRX-Config IE configures at least one of the cell DTX or cell DRX of the first cell.

[0196] As an embodiment, a field in the designated RRC signaling configures the length of the cycle of at least one of the cell DTX or cell DRX of the first cell.

[0197] As an embodiment, a celldtxdrx-Cycle field in the designated RRC signaling configures the length of the cycle of at least one of the cell DTX or cell DRX of the first cell.

[0198] As an embodiment, the designated RRC signaling includes a field configuring the cellDTXDRX-onDurationTimer of the cell DTX of the first cell.

[0199] As an embodiment, a name in the designated RRC signaling includes a field of cellDTXDRX-onDurationTimer to configure the cellDTXDRX-onDurationTimer.

[0200] As an embodiment, the designated RRC signaling configures the celldtxdrx-onDurationTimer, the celldtxdrx-Cycle and the celldtxdrx-StartOffset.

[0201] As an embodiment, the at least one of the cell DTX or the cell DRX of the first cell being activated means that the at least one of the cell DTX or the cell DRX of the first cell is activated by the designated RRC signaling.

[0202] As a sub-embodiment of the above embodiment, the at least one of the cell DTX or the cell DRX of the first cell is activated by a field in the designated RRC signaling.

[0203] As a sub-embodiment of the above embodiment, if the designated RRC signaling includes a cellDTXDRXactivationStatus-r18 field and the cellDTXDRXactivationStatus-r18 field is set to activated, it indicates that at least one of the cell DTX or cell DRX of the first cell is activated.

[0204] As an embodiment, the at least one of the cell DTX or the cell DRX of the first cell being activated means that the at least one of the cell DTX or the cell DRX of the first cell is activated by a DCI.

[0205] As a sub-embodiment of the above embodiment, the format of the DCI is DCI Format 2_9.

[0206] As a sub-embodiment of the above embodiment, the one DCI indicates at least one cell.

[0207] As a sub-embodiment of the above embodiment, the DCI is broadcast.

[0208] As a sub-embodiment of the above embodiment, the DCI is multicast.

[0209] As a sub-embodiment of the above embodiment, the DCI is unicast.

[0210] As an embodiment, if at least one of the cell DTX or the cell DRX of the first cell is configured and activated, the active period of the at least one of the cell DTX or the cell DRX of the first cell is the time when cellDTXDRX-onDurationTimer is running.

[0211] As an embodiment, the period during which the first cell is in the active period of at least one of the cell DTX or cell DRX of the first cell is a time when the at least one of the cell DTX or cell DRX of the first cell is configured, the at least one of the cell DTX or cell DRX of the first cell is activated, and the celldtxdrx-onDurationTimer is running; the period during which the first cell is outside the active period of at least one of the cell DTX or cell DRX of the first cell is a time when the at least one of the cell DTX or cell DRX of the first cell is configured, the at least one of the cell DTX or cell DRX of the first cell is activated, and the celldtxdrx-onDurationTimer is not running.

[0212] As an embodiment, the start time of the active period of at least one of the cell DTX or cell DRX of the first cell in each cycle of at least one of the cell DTX or cell DRX of the first cell depends on SFN, the celldtxdrx-onDurationTimer, celldtxdrx-Cycle and celldtxdrx-StartOffset.

[0213] As an embodiment, the start time of the active period of at least one of the cell DTX or cell DRX of the first cell in each cycle of at least one of the cell DTX or cell DRX of the first cell is the time when the celldtxdrx-onDurationTimer starts running.

[0214] As an embodiment, if [(SFN×10)+subframe number] modulo(celldtxdrx-Cycle)=(celldtxdrx-StartOffset), the celldtxdrx-onDurationTimer is started after the celldtxdrx-SlotOffset of the subframe indicated by the SFN.

[0215] As an embodiment, if at least one of the cell DTX or the cell DRX of the first cell is not activated, even if [(SFN×10)+subframe number] modulo(celldtxdrx-Cycle)=(celldtxdrx-StartOffset), cellDTXDRX-onDurationTimer is not started.

[0216] As an embodiment, how the RRC sublayer of the first node determines whether the at least one of the cell DTX or the cell DRX of the first cell is activated depends on the UE implementation.

[0217] As an embodiment, how the RRC sublayer of the first node determines whether at least one of the cell DTX or the cell DRX of the first cell is activated is undefined.

[0218] As an embodiment, how the RRC sublayer of the first node determines whether the first cell is in the active period of at least one of the cell DTX or the cell DRX of the first cell depends on UE implementation.

[0219] As an embodiment, how the RRC sublayer of the first node determines whether the first cell is in the active period of at least one of the cell DTX or the cell DRX of the first cell is undefined.

[0220] As an embodiment, the MCG failure information message is a MCGFailureInformation message.

[0221] As an embodiment, the MCG failure information message includes a MCGFailureInformation message.

[0222] As an embodiment, the MCG failure information message is embedded in a ULInformationTransferMRDC message.

[0223] As an embodiment, the MCG failure information message indicates the failure type of the MCG.

[0224] As an embodiment, the MCG failure information message includes a failureType field, and the failureType field indicates the failure type of the MCG.

[0225] As an embodiment, the sending of the MCG failure information message through the SCG includes: as long as the first node is configured with the split SRB1, delivering the MCG failure information message to a lower layer through SRB1.

[0226] As an embodiment, the sending of the MCG failure information message through the SCG includes: if the first node is configured with the split SRB1, delivering the MCG failure information message to a lower layer through the SRB1.

[0227] As an embodiment, the sending of the MCG failure information message through the SCG includes: if the first node is configured with the SRB3, delivering the MCG failure information message to a lower layer through the SRB3.

[0228] As an embodiment, the first node is configured with split SRB1.

[0229] As an embodiment, the first node is configured with SRB3.

[0230] As an embodiment, the first node is configured with split SRB1 and SRB3.

[0231] As an embodiment, when the MCG detects that the radio link fails, neither the MCG nor the SCG is suspended.

[0232] As an embodiment, when the MCG failure information process is initiated, neither the MCG nor the SCG is suspended.

[0233] As an embodiment, the suspension refers to: pause.

[0234] As an embodiment, the suspension refers to: suspend.

[0235] As an embodiment, the PSCell change process is not being performed.

[0236] As an embodiment, when it is determined that the MCG wireless link fails, the PSCell change process is no longer executed.

[0237] As an embodiment, when it is determined that the MCG wireless link fails, the SCG is not deactivated.

[0238] As an embodiment, the SCG is not deactivated means that the SCG does not support SCG deactivation.

[0239] As an embodiment, the SCG is not deactivated, which means that the SCG is not instructed to be deactivated.

[0240] As an embodiment, the SCG is not instructed to be deactivated, which means that the SCG is not configured to be deactivated.

[0241] As an embodiment, the SCG is not instructed to be deactivated, which means that the SCG is not configured to be deactivated.

[0242] As an embodiment, the SCG is not instructed to be deactivated, which means that the first RRC message does not include the deactivated scg-State-r17 field.

[0243] Example 2

[0244] Example 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the attached diagram. Figure 2 As shown. Figure 2A network architecture 200 is described. The network architecture 200 is a 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system, or a 5G+ network architecture, or a 6G network architecture, or a network architecture that will continue to evolve in the future by 3GPP. The network architecture 200 may be referred to as a 5GS (5G System) / EPS (Evolved Packet System), or a 6GS (6G System). The network architecture 200 includes at least one of a UE (User Equipment) 201, a RAN (Radio Access Network) 202, a core network 210, a Home Subscriber Server (HSS) / Unified Data Management (UDM) 220, and an Internet service 230. The network architecture 200 can interconnect with other access networks, but for simplicity, these entities / interfaces are not shown. As shown, the network architecture 200 provides packet-switched services, but those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. The RAN includes node 203 and other nodes 204. Node 203 provides user and control plane protocol termination towards UE 201. Node 203 can be connected to other nodes 204 via an Xn interface (e.g., backhaul) / X2 interface. Node 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), TRP (transmitter / receiver node), or some other appropriate terminology. The core network 210 is a 5G Core Network (5G Core Network) / EPC (Evolved Packet Core), or alternatively, a 6G Core Network; node 203 provides an access point to the core network 210 for UE 201. Examples of UE 201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop computer, a personal digital assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a drone, an aircraft, a narrowband Internet of Things device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similarly functional device.Those skilled in the art may also refer to UE 201 as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other appropriate term. Node 203 is connected to the core network 210 via an S1 / NG interface. The core network 210 includes an MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MMEs / AMFs / SMFs 214, an S-GW (Service Gateway) / UPF (User Plane Function) 212, and a P-GW (Packet Data Network Gateway) / UPF 213. The MME / AMF / SMF 211 is a control node that handles signaling between UE 201 and the core network 210. Generally, MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW / UPF 212, which is itself connected to P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. P-GW / UPF 213 is connected to Internet Services 230. Internet Services 230 includes operator-specific Internet Protocol services, specifically the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0245] As an embodiment, the UE 201 is a user equipment (UE).

[0246] As an embodiment, the UE 201 is a base station (BS).

[0247] As an embodiment, the UE 201 is a relay device.

[0248] As an embodiment, the UE 201 is a gateway device.

[0249] As an embodiment, the node 203 corresponds to the second node in this application.

[0250] As an embodiment, the node 203 is a base station device.

[0251] As an embodiment, the node 203 is a user equipment.

[0252] As an embodiment, the node 203 is a relay device.

[0253] As an embodiment, the node 203 is a gateway device.

[0254] As an embodiment, the node 204 corresponds to the third node in this application.

[0255] As an embodiment, the node 204 is a base station device.

[0256] As an embodiment, the node 204 is a user equipment.

[0257] As an embodiment, the node 204 is a relay device.

[0258] As an embodiment, the node 204 is a gateway device.

[0259] As an embodiment, the UE 201 maintains connections with the node 203 and the node 204 at the same time.

[0260] As an embodiment, the node 203 and the node 204 are connected via an ideal backhaul.

[0261] As an embodiment, the node 203 and the node 204 are connected via a non-ideal backhaul.

[0262] As an example, the node 203 is a SN (Secondary Node), and the node 204 is a MN (Master Node).

[0263] Typically, the UE 201 is a user equipment, the node 203 is a base station device, and the node 204 is a base station device.

[0264] Typically, the UE 201 is a user equipment, the node 203 is a user equipment, and the node 204 is a user equipment.

[0265] Typically, the UE 201 is a base station device, the node 203 is a base station device, and the node 204 is a base station device.

[0266] As an embodiment, the user equipment supports dual connectivity.

[0267] As an embodiment, the user equipment supports network energy saving.

[0268] As an embodiment, the user equipment supports cell DTX.

[0269] As an embodiment, the user equipment supports cell DTX / DRX.

[0270] As an embodiment, the user equipment supports MR-DC.

[0271] As an embodiment, the user equipment supports EN-DC.

[0272] As an embodiment, the user equipment is a mobile terminal.

[0273] As an embodiment, the user device is a mobile phone or a tablet.

[0274] As an embodiment, the user equipment is an aircraft.

[0275] As an embodiment, the user device is an Internet of Things device, and the Internet of Things device is an Internet of Things terminal or a vehicle-mounted terminal or a ship or an industrial Internet of Things terminal.

[0276] As an embodiment, the user equipment is a test device or a signaling tester.

[0277] As an embodiment, the user equipment is an IAB (Integrated Access and Backhaul)-MT.

[0278] As an embodiment, the base station device supports transmission in a non-terrestrial network.

[0279] As an embodiment, the base station device supports transmission of a terrestrial network.

[0280] As an embodiment, the base station device is a macrocellular (Marco Cellular) base station or a microcell (MicroCell) base station or a picocell (Pico Cell) base station or a home base station (Femtocell); the base station device is a base transceiver station (Base Transceiver Station, BTS) or a node B (NodeB, NB) or a gNB or an eNB or an ng-eNB or an en-gNB.

[0281] As an embodiment, the base station device includes at least one of a CU (Centralized Unit), a DU (Distributed Unit), or a TRP (Transmitter Receiver Point).

[0282] As an embodiment, the base station device is an aerial node, and the aerial node is a flight platform device, a satellite device, or an NTN base station.

[0283] As an embodiment, the base station device is a test device or a signaling tester.

[0284] As an embodiment, the base station device is a gateway device.

[0285] As an embodiment, the base station device is a RAN node.

[0286] As an embodiment, the RAN node is a NG-RAN node.

[0287] As an embodiment, the RAN node is a gNB.

[0288] As an embodiment, the RAN node is an ng-eNB.

[0289] As an embodiment, the RAN node is a NodeB.

[0290] As an embodiment, the RAN node is an eNodeB.

[0291] As an embodiment, the base station device is an IAB node, and the IAB node is an IAB-node or an IAB-donor or an IAB-donor-CU or an IAB-donor-DU or an IAB-DU or an IAB-MT.

[0292] As an embodiment, the relay device is a relay, and the relay is an L3 relay, an L2 relay, or an L1 relay.

[0293] As an embodiment, the relay device is a router.

[0294] As an embodiment, the relay device is a RIS.

[0295] As an embodiment, the relay device is a switch or a gateway device.

[0296] As an embodiment, the relay device is a user equipment.

[0297] As an embodiment, the relay device is a network device.

[0298] Example 3

[0299] Example 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in the attached figure. Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3 The radio protocol architecture for control plane 300 is shown using three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2 (L2 layer) 305, located above PHY 301, includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets and supports handover. 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 (Hybrid Automatic Repeat Request). The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring lower layers using RRC signaling. The radio protocol architecture of the user plane 350 includes Layer 1 (L1) and Layer 2 (L2). The radio protocol architecture in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355. However, the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for mapping between QoS flows and data radio bearers (DRBs) to support service diversity.

[0300] As an example, Figure 3The wireless protocol architecture in is applicable to the first node in this application.

[0301] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0302] As an example, Figure 3 The wireless protocol architecture in is applicable to the third node in this application.

[0303] As an embodiment, the second node in the present application and the third node in the present application may adopt the protocol architecture of Section 4.2.2 in 3GPP TS 38.340; wherein, the second node in the present application corresponds to SCG, and the third node in the present application corresponds to MCG.

[0304] As an embodiment, the first RRC message in this application is generated in the RRC306.

[0305] As an embodiment, the second RRC message in this application is generated in the RRC306.

[0306] As an embodiment, the MCG failure information message in this application is generated in the RRC306.

[0307] As an embodiment, the first information block in this application is generated in the RRC306.

[0308] As an embodiment, the PDCCH of the first cell in the present application is generated in the PHY301 or PHY351.

[0309] Example 4

[0310] Example 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in the attached figure. Figure 4 shown. Figure 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.

[0311] 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 , a multi-antenna transmit processor 457 , a multi-antenna receive processor 458 , a transmitter / receiver 454 and an antenna 452 .

[0312] The second communication device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 , and an antenna 420 .

[0313] During transmission from the second communication device 410 to the first communication device 450, upper layer data packets from the core network are provided to the controller / processor 475 at the second communication device 410. The controller / processor 475 implements L2 layer functionality. During transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), M-phase-shift keying (M-PSK), and M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) 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 multicarrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0314] During transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal via its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream, which is provided to the receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various L1 signal processing functions. The 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 multi-carrier symbol stream, after the receive analog precoding / beamforming operations, from the time domain to the frequency domain using a fast Fourier transform (FFT). In the frequency domain, the receive processor 456 demultiplexes the physical layer data signal and reference signal, where the reference signal is used for channel estimation. The data signal undergoes multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial streams destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in the 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 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 code and data. The memory 460 may be referred to as a computer-readable medium. During transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 layer for L3 processing.

[0315] During 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 the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functionality at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding, while the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming. The transmit processor 468 then modulates the resulting spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding and beamforming operations in the multi-antenna transmit processor 457, the stream is provided to different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a RF symbol stream before providing it to the antenna 452.

[0316] During transmission from the first communications device 450 to the second communications device 410, the functionality at the second communications device 410 is similar to the reception functionality at the first communications device 450 described for transmission from the second communications device 410 to the first communications device 450. Each receiver 418 receives RF signals via its corresponding antenna 420, converts the received RF signals into 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 L1 layer functionality. A controller / processor 475 implements L2 layer functionality. The controller / processor 475 may be associated with a memory 476 storing program codes and data. The memory 476 may be referred to as a computer-readable medium. During transmission from the first communications device 450 to the second communications device 410, the controller / processor 475 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the UE 450. Upper layer packets from controller / processor 475 may be provided to the core network.

[0317] As an embodiment, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor, and the first communication device 450 at least: receives a first RRC message, the first RRC message configures timer T316; determines that the MCG radio link fails; wherein, as a response to the determination of the MCG radio link failure, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, execute the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the first node is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

[0318] As an embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, and the computer-readable instruction program generates actions when executed by at least one processor, the actions including: receiving a first RRC message, the first RRC message configuring timer T316; determining that the MCG wireless link fails; wherein, as a response to the determination of the MCG wireless link failure, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, executing the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the first node is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

[0319] As an embodiment, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 410 at least: sends a first RRC message, the first RRC message configuring a timer T316; wherein, as a response to a recipient of the first RRC message determining that an MCG radio link has failed, execution of an MCG link recovery process depends on at least one of cell DTX or cell DRX of a first cell, the first cell belonging to an SCG; execution of the MCG link recovery process depends on at least one of cell DTX or cell DRX of the first cell including: when at least one of cell DTX or cell DRX of at least the first cell is not configured, the recipient of the first RRC message performs the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the recipient of the first RRC message is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

[0320] As an embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program, and the computer-readable instruction program generates an action when executed by at least one processor, the action including: sending a first RRC message, the first RRC message configuring timer T316; wherein, as a response to the failure of the MCG wireless link determined by the recipient of the first RRC message, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, the recipient of the first RRC message executes the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the recipient of the first RRC message is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

[0321] As an embodiment, at least one of the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 is used to receive the first RRC message.

[0322] As an embodiment, at least one of the antenna 420, the transmitter 418, the transmit processor 416, and the controller / processor 475 is used to send the first RRC message.

[0323] As an embodiment, at least one of the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 is used to receive the second RRC message.

[0324] As an embodiment, at least one of the antenna 420, the transmitter 418, the transmit processor 416, and the controller / processor 475 is used to send the second RRC message.

[0325] As an embodiment, at least one of the antenna 452 , the receiver 454 , the receiving processor 456 , and the controller / processor 459 is used to monitor the PDCCH of the first cell.

[0326] As an embodiment, at least one of the antenna 420, the transmitter 418, the transmit processor 416, and the controller / processor 475 is used to transmit the PDCCH of the first cell.

[0327] As an embodiment, at least one of the antenna 452, the transmitter 454, the transmit processor 468, and the controller / processor 459 is used to send an MCG failure information message.

[0328] As an embodiment, at least one of the antenna 420, the receiver 418, the reception processor 470, and the controller / processor 475 is configured to receive an MCG failure information message.

[0329] As an embodiment, the first communication device 450 corresponds to the first node in this application.

[0330] As an embodiment, the second communication device 410 corresponds to the second node in this application.

[0331] As an embodiment, the third communication device 490 corresponds to the third node in this application.

[0332] As an embodiment, the first communication device 450 is a user equipment.

[0333] As an embodiment, the first communication device 450 is a base station device.

[0334] As an embodiment, the first communication device 450 is a relay device.

[0335] As an embodiment, the second communication device 410 is a user equipment.

[0336] As an embodiment, the second communication device 410 is a base station device.

[0337] As an embodiment, the second communication device 410 is a relay device.

[0338] Example 5

[0339] Example 5 illustrates an implementation flow chart according to an embodiment of the present application, as shown in the attached Figure 5 It is particularly noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0340] for First node U01 In step S5101, a first RRC message is received, and the first RRC message configures timer T316; in step S5102, the MCG wireless link failure is determined; in step S5103, as a response to the determination of the MCG wireless link failure, it is determined whether at least one of the cell DTX or cell DRX of at least the first cell is not configured; when at least one of the cell DTX or cell DRX of at least the first cell is not configured, step S5104 (a) is entered; otherwise, step S5104 (b) is entered; in step S5104 (a), the MCG link recovery process is executed; in step S5105, an MCG failure information message is sent through the SCG; in step S5104 (b), an RRC connection re-establishment process is executed.

[0341] for Second node N02 In step S5201, the first RRC message is sent; in step S5202, the MCG failure information message is received.

[0342] for The third node N03 , in step S5301, the first RRC message is sent.

[0343] In Example 5, as a response to the determination of the MCG wireless link failure, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, executing the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the first node U01 is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

[0344] As an embodiment, the first node U01 and the second node N02 are connected wirelessly.

[0345] As an embodiment, the first node U01 and the second node N02 are connected via a wired connection.

[0346] As an embodiment, the first node U01 and the second node N02 are connected via a Uu port.

[0347] As an embodiment, the first node U01 and the second node N02 are connected via an IAB port.

[0348] As an embodiment, the first node U01 and the second node N02 are connected via a PC5 interface.

[0349] As an embodiment, the third node N03 and the second node N02 are connected via a wireless interface.

[0350] As an embodiment, the third node N03 and the second node N02 are connected via a wired interface.

[0351] As an embodiment, the third node N03 and the second node N02 are connected via an Xn interface.

[0352] As an embodiment, the third node N03 and the second node N02 are connected via an X2 interface.

[0353] As an embodiment, the backhaul between the third node N03 and the second node N02 is ideal.

[0354] As an embodiment, the backhaul between the third node N03 and the second node N02 is non-ideal.

[0355] As an embodiment, the third node N03 is an MN, and the second node N02 is an SN.

[0356] As an embodiment, the third node N03 is a gNB, and the second node N02 is a gNB.

[0357] As an embodiment, the third node N03 is an eNB, and the second node N02 is a gNB.

[0358] As an embodiment, the third node N03 is a gNB, and the second node N02 is an eNB.

[0359] As an embodiment, the dotted box F5.1 is optional.

[0360] As an embodiment, the dotted box F5.1 exists.

[0361] As an embodiment, the dotted box F5.1 does not exist.

[0362] As an embodiment, the dotted box F5.2 is optional.

[0363] As an embodiment, the dotted box F5.2 exists.

[0364] As an embodiment, the dotted box F5.2 does not exist.

[0365] As an embodiment, step S5104(b) is optional.

[0366] As an embodiment, step S5104(b) exists.

[0367] As a sub-embodiment of the above embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is configured, performing the RRC connection re-establishment process.

[0368] As a sub-embodiment of the above embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, executing the MCG link recovery process; when at least one of the cell DTX or cell DRX of at least the first cell is configured, executing the RRC connection re-establishment process.

[0369] As a sub-embodiment of the above embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, the MCG link recovery process is executed; otherwise, the RRC connection re-establishment process is executed.

[0370] As a sub-embodiment of the above embodiment, the RRC connection re-establishment process includes sending an RRCReestablishmentRequest message.

[0371] As a sub-embodiment of the above embodiment, the RRC connection re-establishment process includes sending an RRCConnectionReestablishmentRequest message.

[0372] As an embodiment, step S5104(b) does not exist.

[0373] As a sub-embodiment of the above embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, executing the MCG link recovery process; when at least one of the cell DTX or cell DRX of at least the first cell is configured, entering the RRC_IDLE state.

[0374] As a sub-embodiment of the above embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, executing the MCG link recovery process; otherwise, entering the RRC_IDLE state.

[0375] As a sub-embodiment of the above embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, executing the MCG link recovery process; when at least one of the cell DTX or cell DRX of at least the first cell is configured, applying the configuration information of the candidate cell.

[0376] As a sub-embodiment of the above embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, the MCG link recovery process is executed; otherwise, the configuration information of the candidate cell is applied.

[0377] As a sub-embodiment of the above embodiment, the candidate cell is a CHO candidate cell.

[0378] As a sub-embodiment of the above embodiment, the candidate cell is an LTM candidate cell.

[0379] Example 6

[0380] Example 6 illustrates an implementation flow chart according to an embodiment of the present application, as shown in the attached Figure 6 It is particularly noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0381] for First node U01 In step S6101, a first RRC message is received, and the first RRC message configures timer T316; in step S6102, the MCG wireless link failure is determined; in step S6103, as a response to the determination of the MCG wireless link failure, the MCG link recovery process is executed; in step S6104, it is determined whether at least one of the cell DTX or cell DRX of at least the first cell is not configured; when at least one of the cell DTX or cell DRX of at least the first cell is not configured, step S6105 is entered; otherwise, step S6105 is not executed; in step S6106, an MCG failure information message is sent through the SCG.

[0382] for Second node N02 In step S6201, the first RRC message is sent; in step S6202, the MCG failure information message is received.

[0383] for The third node N03 , in step S6301, the first RRC message is sent.

[0384] In embodiment 6, as a response to determining that the MCG radio link has failed, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, executing the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the first node U01 is configured with split At least one of SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: in the MCG link recovery process, whether to perform the first action depends on the at least one of the cell DTX or cell DRX of the first cell; when at least one of the cell DTX or cell DRX of at least the first cell is configured, the first action is performed in the MCG link recovery process; the first action includes considering the at least one of the cell DTX or cell DRX of the first cell as being deactivated.

[0385] As an embodiment, the dotted box F6.1 is optional.

[0386] As an embodiment, the dotted box F6.1 exists.

[0387] As an embodiment, the dotted box F6.1 does not exist.

[0388] As an embodiment, the dotted box F6.2 is optional.

[0389] As an embodiment, the dotted box F6.2 exists.

[0390] As an embodiment, the dotted box F6.2 does not exist.

[0391] As an embodiment, the step S6101 and the step S6102 refer to the step S5101 and the step S5102 of embodiment 5; the step S6201 refers to the step S5201 of embodiment 5; the step S6301 refers to the step S5301 of embodiment 5; and they will not be repeated here.

[0392] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, the first action is not performed in the MCG link recovery process; when at least one of the cell DTX or cell DRX of at least the first cell is configured, the first action is performed in the MCG link recovery process.

[0393] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is configured, the first action is executed in the MCG link recovery process; otherwise, the first action is not executed in the MCG link recovery process.

[0394] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of the first cell is not activated, the first action is not performed in the MCG link recovery process; when at least one of the cell DTX or cell DRX of the first cell is activated, the first action is performed in the MCG link recovery process.

[0395] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is activated, the first action is executed in the MCG link recovery process; otherwise, the first action is not executed in the MCG link recovery process.

[0396] As an embodiment, the MCG link recovery process refers to: before the MCG failure information message is sent through the SCG.

[0397] As an embodiment, the MCG link recovery process refers to: before resetting the MCG MAC.

[0398] As an embodiment, the MCG link recovery process refers to: before suspending the MCG transmission of all SRBs except SRB0.

[0399] As an embodiment, the MCG link recovery process refers to: after the MCG failure information message is delivered to a lower layer.

[0400] As an embodiment, the MCG link recovery process refers to: after the MCG failure information message is sent.

[0401] As an embodiment, the MCG link recovery process refers to: after the MCG failure information message is sent.

[0402] As an embodiment, the MCG link recovery process refers to: accompanying the MCG link recovery process.

[0403] As an embodiment, considering at least one of the cell DTX or the cell DRX of the first cell as being deactivated means: considering that at least one of the cell DTX or the cell DRX of the first cell is not deactivated.

[0404] As an embodiment, considering at least one of the cell DTX or the cell DRX of the first cell as being deactivated means: assuming that at least one of the cell DTX or the cell DRX of the first cell is not deactivated.

[0405] As an embodiment, considering at least one of the cell DTX or the cell DRX of the first cell as being deactivated means: if at least one of the cell DTX or the cell DRX of the first cell is considered to be activated, considering at least one of the cell DTX or the cell DRX of the first cell as being deactivated.

[0406] Example 7

[0407] Example 7 illustrates an implementation flow chart according to another embodiment of the present application, as shown in the attached Figure 7 It is particularly noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0408] for First node U01 In step S7101, a second RRC message is received, and the second RRC message configures the cell DTX of the first cell; in step S7102, when the cell DTX of the first cell is activated and the first cell is outside the active period of the cell DTX of the first cell, the PDCCH of the first cell is monitored during the MCG link recovery process.

[0409] for Second node N02 , in step S7201, the second RRC message is sent.

[0410] for The third node N03, in step S7301, the second RRC message is sent.

[0411] In embodiment 7, the MCG link recovery process is performed.

[0412] As an embodiment, the second RRC message includes the designated RRC signaling; the designated RRC signaling includes a cellDTXDRXconfigType field, and the cellDTXDRXconfigType field is set to dtx.

[0413] As an embodiment, the second RRC message includes the designated RRC signaling; the designated RRC signaling includes a cellDTXDRXconfigType field, and the cellDTXDRXconfigType is set to Dtxdrx.

[0414] As an embodiment, the second RRC message is an RRC message.

[0415] As an embodiment, the second RRC message is cell-common.

[0416] As an embodiment, the above method reduces signaling overhead.

[0417] As an embodiment, the second RRC message is a SIB1 message.

[0418] As an embodiment, the second RRC message is dedicated to the first node U01.

[0419] As an embodiment, the above method implements differentiated configuration of different UEs.

[0420] As an embodiment, the above method reduces the impact on UEs that do not support cell DTX.

[0421] As an embodiment, the second RRC message is an RRCReconfiguration message.

[0422] As an embodiment, the process accompanying the MCG link recovery refers to: a period of time dependent on the MCG link recovery process.

[0423] As an embodiment, the process accompanying the MCG link recovery refers to: a period of time related to the MCG link recovery process.

[0424] As an embodiment, the accompanying MCG link recovery process refers to: during the MCG link recovery process.

[0425] As an embodiment, the accompanying MCG link recovery process refers to: when the MCG link recovery process is in progress.

[0426] As an embodiment, the accompanying MCG link recovery process refers to: all time during the MCG link recovery process.

[0427] As an embodiment, the accompanying MCG link recovery process refers to: at least part of the time of the MCG link recovery process.

[0428] As an embodiment, the process accompanying the MCG link recovery process refers to: at least a period of time after the MCG failure information process is initiated.

[0429] As an embodiment, the process accompanying the MCG link recovery process refers to: the time interval between the start of the MCG failure information process and the end of the MCG failure information process.

[0430] As an embodiment, the process accompanying the MCG link recovery belongs to: the time interval between the start of the MCG failure information process and the end of the MCG failure information process.

[0431] As an embodiment, the start of the MCG failure information process refers to initiating the MCG failure information process.

[0432] As an embodiment, the start of the MCG failure information process refers to determining to initiate the MCG failure information process.

[0433] As an embodiment, the end of the MCG failure information process includes the MCG failure information process being completed.

[0434] As an embodiment, the end of the MCG failure information process includes the failure of the MCG failure information process.

[0435] As an embodiment, the end of the MCG failure information process includes either the MCG failure information process being completed or the MCG failure information process failing.

[0436] As an embodiment, the start time of the MCG link recovery process depends on whether the MCG failure information message is sent.

[0437] As an embodiment, the sending of the MCG failure information message refers to: initiating the sending of the MCG failure information message.

[0438] As an embodiment, the MCG failure information message being sent means that the MCG failure information message is sent at the physical layer.

[0439] As an embodiment, the MCG failure information message being sent means that the MCG failure information message is sent at the MAC sublayer.

[0440] As an embodiment, the MCG failure information message is sent, which means that the MCG failure information message is sent at the RRC sublayer.

[0441] As an embodiment, the MCG failure information message being sent means that a DCCH message including the MCG failure information message is sent.

[0442] As an embodiment, the MCG failure information message being sent means that the MCG failure information message is successfully sent.

[0443] As an embodiment, after the MCG failure information message is sent, an ACK is received; the MCG failure information message is successfully sent, which means that the ACK for the MCG failure information message is received.

[0444] As an embodiment, the start time of the MCG link recovery process depends on the time when the timer T316 starts running.

[0445] As an embodiment, the start time of the MCG link recovery process depends on the reception of a second indication; along with the sending of the MCG failure information message through the SCG, the RRC sublayer of the first node U01 sends the second indication to the lower layer; the MAC sublayer of the first node U01 receives the second indication.

[0446] As an embodiment, the end time of the MCG link recovery process depends on whether the second message is received.

[0447] As an embodiment, the end time of the MCG link recovery process depends on the time when the timer T316 expires or is stopped.

[0448] As an embodiment, the end time of the MCG link recovery process depends on the reception of a first indication; as a response to the expiration of the timer T316, the RRC sublayer of the first node U01 sends the first indication to the lower layer; the MAC sublayer of the first node U01 receives the first indication.

[0449] As an embodiment, the end time of the MCG link recovery process depends on the reception of a third indication; as a response to the reception of the second message, the RRC sublayer of the first node U01 sends the third indication to the lower layer; the MAC sublayer of the first node U01 receives the third indication.

[0450] As an embodiment, the MCG link recovery process is performed when the timer T316 is running.

[0451] As an embodiment, the MCG link recovery process refers to: the time when the timer T316 is running.

[0452] As an embodiment, the process accompanying the MCG link recovery refers to the time from when the MCG failure information message is sent to when the second message is received.

[0453] As an embodiment, the process accompanying the MCG link recovery refers to the time when the MCG failure information message is sent and the timer T316 is running.

[0454] As an embodiment, the MCG link recovery process refers to: the time from when the second indication is received to when the first indication is received.

[0455] As an embodiment, the process accompanying the MCG link recovery refers to: the time from when the second indication is received to when the third indication is received.

[0456] As an embodiment, how the MAC sublayer of the first node U01 determines that the MCG failure information message is sent depends on UE implementation.

[0457] As an embodiment, how the MAC sublayer of the first node U01 determines that the MCG failure information message is sent is undefined.

[0458] As an embodiment, how the MAC sublayer of the first node U01 determines whether the second message is received depends on UE implementation.

[0459] As an embodiment, how the MAC sublayer of the first node U01 determines whether the second message is received is undefined.

[0460] As an embodiment, how the MAC sublayer of the first node U01 determines whether the timer T316 is running depends on the UE implementation.

[0461] As an embodiment, how the MAC sublayer of the first node U01 determines whether the timer T316 is running is undefined.

[0462] Example 8

[0463] Example 8 illustrates an implementation flow chart according to another embodiment of the present application, as shown in the attached Figure 8 As shown in the attached Figure 8 shown.

[0464] for First node U01 , in step S8101, as a response to determining that the MCG radio link has failed, setting a first information block in a first UE variable;

[0465] In Example 8, the first UE variable includes relevant information about the failure of the MCG wireless link; the first information block indicates the reason why the MCG link recovery process is not executed; and the MCG link recovery process is not executed.

[0466] As an embodiment, a first RRC message is received, and the first RRC message configures timer T316; the MCG wireless link failure is determined; as a response to the determination of the MCG wireless link failure, a first information block is set in a first UE variable; wherein the first UE variable includes relevant information about the MCG wireless link failure; wherein the first information block indicates the reason why the MCG link recovery process is not executed; the MCG link recovery process is not executed.

[0467] As an embodiment, the receiving of the first RRC message refers to Embodiments 1 and 5 and the attached Figure 1 and attached Figure 5 , I will not go into details here.

[0468] As an embodiment, the determination of MCG radio link failure refers to Example 1 and the attached Figure 1 , I will not go into details here.

[0469] As an embodiment, in response to the determination of the MCG radio link failure, execution of the MCG link recovery process depends on at least one of the cell DTX or the cell DRX of the first cell.

[0470] As a sub-embodiment of the above embodiment, a candidate value of the first information block indicates that at least one of cell DTX or cell DRX of the first cell is configured.

[0471] As a sub-embodiment of the above embodiment, the first information block indicates that at least one of the cell DTX or cell DRX of the first cell is configured; when it is determined that the MCG wireless link fails, at least one of the cell DTX or cell DRX of the first cell is configured.

[0472] As a sub-embodiment of the above embodiment, a candidate value of the first information block indicates that at least one of cell DTX or cell DRX of the first cell is activated.

[0473] As a sub-embodiment of the above embodiment, the first information block indicates that at least one of the cell DTX or cell DRX of the first cell is activated; when it is determined that the MCG wireless link fails, at least one of the cell DTX or cell DRX of the first cell is activated.

[0474] As a sub-embodiment of the above embodiment, a candidate value of the first information block indicates that the first cell is outside an active period of the at least one of cell DTX or cell DRX of the first cell.

[0475] As a sub-embodiment of the above embodiment, the first information block indicates that the first cell is outside the active period of at least one of the cell DTX or cell DRX of the first cell; when the MCG wireless link failure is determined, the first cell is outside the active period of at least one of the cell DTX or cell DRX of the first cell.

[0476] As an embodiment, in response to the determination of the MCG radio link failure, the execution of the MCG link recovery process does not depend on at least one of the cell DTX or the cell DRX of the first cell.

[0477] As a sub-embodiment of the above embodiment, as a response to determining that the MCG wireless link has failed, regardless of whether at least one of the cell DTX or the cell DRX of the first cell is configured, whether it is activated, or whether at least one of the cell DTX or the cell DRX of the first cell is in an active period of at least one of the cell DTX or the cell DRX of the first cell, the MCG link recovery process is performed and the first action is not performed.

[0478] As a sub-embodiment of the above embodiment, the above method ignores the impact of at least one of the cell DTX or the cell DRX of the first cell on the MCG link recovery process.

[0479] As a sub-embodiment of the above embodiment, the above method reduces the impact of the protocol.

[0480] As an embodiment, a candidate value of the first information block indicates that the reason why the MCG link recovery process was not performed is that the MCG was suspended.

[0481] As an embodiment, the first information block indicates that the MCG is suspended; when it is determined that the MCG wireless link fails, the MCG is suspended.

[0482] As an embodiment, a candidate value of the first information block indicates that the reason why the MCG link recovery process is not performed is that the SCG is suspended.

[0483] As an embodiment, the first information block indicates that the SCG is suspended; when it is determined that the MCG wireless link fails, the SCG is suspended.

[0484] As an embodiment, a candidate value of the first information block indicates that the reason why the MCG link recovery process was not performed is that the SCG was deactivated.

[0485] As an embodiment, the first information block indicates that the SCG is deactivated; when it is determined that the MCG wireless link fails, the SCG is deactivated.

[0486] As an embodiment, a candidate value of the first information block indicates that the reason why the MCG link recovery process is not performed is that any one of the split SRB1 and the SRB3 is not configured.

[0487] As an embodiment, the first information block indicates that any one of the split SRB1 and the SRB3 is not configured; when it is determined that the MCG radio link fails, any one of the split SRB1 and the SRB3 is not configured.

[0488] As an embodiment, the first UE variable is a VarRLF-Report.

[0489] As an embodiment, the first UE variable includes an rlf-Report-r16 field, and the rlf-Report-r16 field includes the first information block.

[0490] As an embodiment, the first UE variable includes an RLF-Report-r16 field, and the RLF-Report-r16 field includes the first information block.

[0491] As an embodiment, the first information block is a field in the RLF-Report-r16 field in the first UE variable.

[0492] As an embodiment, the name of the first information block includes at least one of Fast or MCG or Failure or Recovery or Information or Failure or Cause.

[0493] As an embodiment, the name of the first information block includes at least one of reestablishment or Cause.

[0494] As an embodiment, the name of the first information block includes at least one of reestablishment or Type.

[0495] As an embodiment, the name of the first information block includes reestablishmentCause.

[0496] As an embodiment, the name of the first information block includes reestablishmentType.

[0497] As an embodiment, the name of the first information block includes mcgFastRecoveryFailureCause.

[0498] As an embodiment, the name of the first information block includes mcgFastRecoveryFailureType.

[0499] As an embodiment, the name of the first information block includes mcgFailureInformationFailureCause.

[0500] As an embodiment, the name of the first information block includes mcgFailureInformationFailureType.

[0501] As an embodiment, the name of the first information block includes mcgRecoveryFailureCause; a candidate value of the first information block includes t316-Expiry and scgDeactivated.

[0502] As an embodiment, the above embodiments do not limit the case of letters in the name of the first information block.

[0503] As an embodiment, as a response to the determination of the MCG radio link failure, the radio link failure information is stored in the first UE variable.

[0504] As an embodiment, storing the radio link failure information in the first UE variable includes setting a first information block in the first UE variable.

[0505] As an embodiment, storing radio link failure information in the first UE variable includes: determining radio link failure report content (RLF report content determination).

[0506] As an embodiment, storing radio link failure information in the first UE variable includes: determining a radio link failure cause (RLF cause determination).

[0507] As an embodiment, storing the radio link failure information in the first UE variable includes: setting the rlf-Cause field in the first UE variable.

[0508] As an embodiment, storing the radio link failure information in the first UE variable includes: setting the c-RNTI field in the first UE variable.

[0509] As an embodiment, after storing the radio link failure information in the first UE variable, the first information block is set in the first UE variable.

[0510] As an embodiment, after storing the radio link failure information in the first UE variable, before initiating the RRC connection re-establishment process, the first information block is set in the first UE variable.

[0511] Example 9

[0512] Example 9 illustrates a schematic diagram of cell DTX of a first cell according to an embodiment of the present application, as shown in the attached figure. Figure 9 The horizontal axis represents time; at time t1, the cell DTX of the first cell is activated; at time t2, the cell DTX of the first cell is deactivated; boxes 901, 902, and 903 represent the time when the cell DTX of the first cell is activated and the first cell is in the active period of the cell DTX of the first cell; within the time interval between time t1 and time t2, the time outside the boxes 901, 902, and 903 represents the time when the first cell is outside the active period of the cell DTX of the first cell; for at least a period of time before time t1 and at least a period of time after time t2, the cell DTX of the first cell is not activated.

[0513] In embodiment 9, the cell DTX of the first cell is configured.

[0514] As an embodiment, the cell DTX of the first cell is configured; a DRX group is configured; and the one DRX group includes the first cell.

[0515] As an embodiment, the cell DRX of the first cell is not configured.

[0516] As an embodiment, the cell DRX of the first cell is configured.

[0517] As an embodiment, the time from the start time of block 901 to before the start time of block 902 is a period of cell DTX of the first cell.

[0518] As an embodiment, the time from the start time of block 902 to before the start time of block 903 is a period of cell DTX of the first cell.

[0519] As an embodiment, this embodiment does not limit the time length and specific time domain position during which the first cell is in the active period of the cell DTX of the first cell and the time length during which the first cell is outside the active period of the cell DTX of the first cell.

[0520] Example 10

[0521] Example 10 illustrates a structural block diagram of a processing device in a first node according to an embodiment of the present application; Figure 10 As shown in the attached Figure 10 In the embodiment, the processing device 1000 in the first node includes a first receiver 1001 and a first processor 1002.

[0522] A first receiver 1001 receives a first RRC message, where the first RRC message configures a timer T316;

[0523] The first processor 1002 determines that the MCG wireless link fails.

[0524] In Example 10, as a response to the determination of the failure of the MCG wireless link, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, executing the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the first node is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

[0525] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is configured, performing the RRC connection re-establishment process.

[0526] As an embodiment, the first processor 1002, as a response to the determination of the MCG wireless link failure, sets a first information block in a first UE variable; wherein, the first UE variable includes relevant information of the MCG wireless link failure; wherein, the first information block indicates the reason why the MCG link recovery process was not executed; the MCG link recovery process was not executed.

[0527] As an embodiment, the first receiver 1001 receives a second RRC message, and the second RRC message configures the cell DTX of the first cell; when the cell DTX of the first cell is activated and the first cell is outside the active period of the cell DTX of the first cell, the first receiver 1001 monitors the PDCCH of the first cell accompanied by the MCG link recovery process; wherein the MCG link recovery process is executed.

[0528] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: whether to execute the first action in the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell; when at least one of the cell DTX or cell DRX of at least the first cell is configured, the first action is executed in the MCG link recovery process; the first action includes considering at least one of the cell DTX or cell DRX of the first cell as being deactivated.

[0529] As an embodiment, the first processor 1002 includes a first transmitter.

[0530] As an embodiment, the first processor 1002 includes a first receiver 1001 and a first transmitter.

[0531] As an embodiment, the first receiver 1001 includes the attached Figure 4 At least one of the antenna 452 or the receiver 454 or the multi-antenna receive processor 458 or the receive processor 456 or the controller / processor 459 or the memory 460 or the data source 467.

[0532] As an embodiment, the first receiver 1001 includes the attached Figure 4 At least an antenna 452 and a receiver 454.

[0533] As an embodiment, the first transmitter includes the attached Figure 4At least one of the antenna 452 or transmitter 454 or multi-antenna transmit processor 457 or transmit processor 468 or controller / processor 459 or memory 460 or data source 467.

[0534] As an embodiment, the first transmitter includes the attached Figure 4 At least antenna 452 and transmitter 454.

[0535] Example 11

[0536] Example 11 illustrates a structural block diagram of a processing device in a second node according to an embodiment of the present application; Figure 11 As shown in the attached Figure 11 In the embodiment, the processing device 1100 in the second node includes a second transmitter 1101 and a second receiver 1102.

[0537] The second transmitter 1101 sends a first RRC message, where the first RRC message configures a timer T316;

[0538] In Example 11, as a response to the failure of the MCG wireless link determined by the receiver of the first RRC message, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, the receiver of the first RRC message executes the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the receiver of the first RRC message is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

[0539] As an embodiment, a second receiver receives the MCG failure information message; wherein the MCG link recovery process is performed by the receiver of the first RRC message; and the second node is a SN.

[0540] As an embodiment, the MCG failure information message is received by the SN; the second node is the MN.

[0541] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is configured, performing the RRC connection re-establishment process.

[0542] As an embodiment, as a response to the failure of the MCG wireless link determined by the receiver of the first RRC message, the receiver of the first RRC message sets a first information block in a first UE variable; wherein, the first UE variable includes relevant information of the failure of the MCG wireless link; the first information block indicates the reason why the MCG link recovery process was not executed; the MCG link recovery process was not executed.

[0543] As an embodiment, the receiver of the first RRC message receives a second RRC message, and the second RRC message configures the cell DTX of the first cell; when the cell DTX of the first cell is activated and the first cell is outside the active period of the cell DTX of the first cell, accompanied by the MCG link recovery process, the receiver of the first RRC message monitors the PDCCH of the first cell; the MCG link recovery process is executed.

[0544] As an embodiment, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: in the MCG link recovery process, whether to execute the first action depends on the at least one of the cell DTX or cell DRX of the first cell; when at least one of the cell DTX or cell DRX of at least the first cell is configured, in the MCG link recovery process, the receiver of the first RRC message executes the first action; the first action includes considering the at least one of the cell DTX or cell DRX of the first cell as being deactivated.

[0545] As an embodiment, the second transmitter 1101 includes the attached Figure 4 At least one of the antenna 420 or transmitter 418 or multi-antenna transmit processor 471 or transmit processor 416 or controller / processor 475 or memory 476.

[0546] As an embodiment, the second transmitter 1101 includes the attached Figure 4 At least antenna 420 and transmitter 418 in.

[0547] As an embodiment, the second receiver 1102 includes the attached Figure 4 At least one of the antenna 420 or the receiver 418 or the multi-antenna receive processor 472 or the receive processor 470 or the controller / processor 475 or the memory 476.

[0548] As an embodiment, the second receiver 1102 includes the attached Figure 4At least the antenna 420 and the receiver 418.

[0549] Those skilled in the art will appreciate that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software functional module. This application is not limited to any specific form of combination of software and hardware. The user equipment, terminal and UE in this application include but are not limited to drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment, wireless sensors, internet cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base stations or system devices in this application include but are not limited to macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR node B) NR node B, TRP (Transmitter Receiver Point) and other wireless communication devices.

[0550] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A first node used for wireless communication, characterized in that: include: A first receiver receives a first RRC message, wherein the first RRC message configures a timer T316; The first processor determines that the MCG wireless link fails; In which, as a response to the determination of the failure of the MCG wireless link, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, executing the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the first node is configured with at least one of splitSRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

2. The first node according to claim 1, wherein: The execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is configured, performing the RRC connection re-establishment process.

3. The first node according to claim 1 or 2, characterized in that include: The first processor, in response to the determination of the MCG radio link failure, sets a first information block in a first UE variable; wherein the first UE variable includes relevant information about the MCG radio link failure; Among them, the first information block indicates the reason why the MCG link recovery process was not executed; the MCG link recovery process was not executed.

4. The first node according to any one of claims 1 to 3, characterized in that: include: The first receiver receives a second RRC message, where the second RRC message configures a cell DTX of the first cell; When the cell DTX of the first cell is activated and the first cell is outside the active period of the cell DTX of the first cell, monitoring the PDCCH of the first cell along with the MCG link recovery process; Among them, the MCG link recovery process is executed.

5. The first node according to any one of claims 1 to 4, characterized in that: The execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: in the MCG link recovery process, whether to execute the first action depends on the at least one of the cell DTX or cell DRX of the first cell; when at least one of the cell DTX or cell DRX of at least the first cell is configured, the first action is executed in the MCG link recovery process; the first action includes considering the at least one of the cell DTX or cell DRX of the first cell as being deactivated.

6. The first node according to any one of claims 1 to 5, characterized in that: The execution of the MCG link recovery process depends on the state of at least one of the cell DTX or cell DRX of the first cell within a given time interval; the length of the given time interval depends on the timer T316.

7. The first node according to any one of claims 1 to 6, characterized in that: The first cell is any cell in the SCG.

8. A method in a first node for wireless communication, characterized in that: include: Receive a first RRC message, wherein the first RRC message configures a timer T316; Determine that the MCG wireless link has failed; In which, as a response to the determination of the failure of the MCG wireless link, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, executing the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the first node is configured with at least one of splitSRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

9. A second node used for wireless communication, characterized in that: include: The second transmitter sends a first RRC message, where the first RRC message configures a timer T316; Among them, as a response to the failure of the MCG wireless link determined by the receiver of the first RRC message, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, the receiver of the first RRC message executes the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the receiver of the first RRC message is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

10. A method used in a second node of wireless communication, characterized in that: include: Sending a first RRC message, wherein the first RRC message configures timer T316; Among them, as a response to the failure of the MCG wireless link determined by the receiver of the first RRC message, the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, and the first cell belongs to the SCG; the execution of the MCG link recovery process depends on at least one of the cell DTX or cell DRX of the first cell, including: when at least one of the cell DTX or cell DRX of at least the first cell is not configured, the receiver of the first RRC message executes the MCG link recovery process; the MCG link recovery process includes sending an MCG failure information message through the SCG; the receiver of the first RRC message is configured with at least one of split SRB1 or SRB3; neither the MCG nor the SCG is suspended; the SCG is not deactivated.

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