A method and apparatus in a communication node used for wireless communication

Abstract

This application discloses a method and apparatus for use in a communication node for wireless communication. The communication node receives a first RRC message, the first RRC message including configuration information of a first candidate cell; determines that at least one PCell has a link problem; starts a first timer in conjunction with the determination that at least one PCell has a link problem; receives first signaling; applies the configuration information of the first candidate cell as a response to the reception of the first signaling; and stops the first timer; wherein the first signaling is signaling below the RRC sublayer, the first signaling indicates the first candidate cell; the first timer is running when the first signaling is received; and the stopping of the first timer depends on the reception of the first signaling.

Description

A method and apparatus for use in a communication node for wireless communication

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on March 28, 2024, with application number 202410374253.9 and application name “A method and device in a communication node used for wireless communication”, and claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on April 18, 2024, with application number 202410472575.7 and application name “A method and device in a communication node used for wireless communication”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to a transmission method and apparatus in a wireless communication system, and in particular to a method and apparatus for storing connection failure information. Background Art

[0003] With the continuous development of wireless communications, the requirements for mobility, transmission latency, and system capacity are becoming increasingly stringent. In addition to continuously improving existing L3 mobility, the 3GPP (3rd Generation Partnership Project) RAN (Radio Access Network) #94e meeting decided to study L1 (Layer 1) / L2 (Layer 2) Triggered Mobility (LTM) within the "Further NR (New Radio) Mobility Enhancements" Work Item (WI). Currently under discussion, LTM is already allowed to be configured in dual connectivity.

[0004] Self-Organizing Networks (SON) include network self-configuration and self-optimization. To optimize mobility performance and achieve fast handover, existing protocols support user equipment (UE) to store relevant handover information during handover and report the stored information after a connection failure based on base station scheduling. Summary of the Invention

[0005] In the traditional scheme, the UE performs a synchronous reconfiguration process after receiving an MCG LTM switching command during T316 operation. If the current configuration does not support RLF report, the UE will clear the stored failure information for MCG fast recovery. The inventors found through research that the existing scheme may cause the loss of connection failure information during the execution of synchronous reconfiguration. Therefore, it is necessary to study the storage method of connection failure information when the MCG LTM switching command is received during T316 operation.

[0006] To address the above-mentioned issues, the present application provides a solution for storing connection failure information. While the NR system is used as an example in the description of the above-mentioned issues, the present application is also applicable to scenarios such as LTE (Long-Term Evolution), LTE-A (Long-Term Evolution Advanced), or future 6G systems, achieving technical effects similar to those of the NR system. Furthermore, although the present application primarily provides specific implementations for triggering conditions for reporting stored information in the RRC_CONNECTED state, the present application can also be used in scenarios such as the RRC_IDLE state or the RRC_INACTIVE state, achieving technical effects similar to those of storing and reporting subsequent information in the RRC connection state. Furthermore, adopting a unified design solution for different scenarios also helps reduce hardware complexity and cost. Furthermore, although the present application provides specific implementations for the LTM scenario, the present application can also be used in scenarios such as m-TRP m-TA, achieving technical effects similar to those in the LTM scenario. Furthermore, although the present application provides a specific implementation method for the LTM scenario, the present application can also be used in scenarios such as C-LTM and L3 HO, achieving technical effects similar to those in the LTM scenario. 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 interface, achieving technical effects similar to those in the Uu air interface. Furthermore, although the original intention of the present application is for the terminal and base station scenario, the present application is also applicable to the V2X (Vehicle-to-Everything) scenario, the communication scenario between the terminal and the relay, and the relay and the base station, achieving technical effects similar to those in the terminal and base station scenario. Furthermore, although the original intention of the present application is for the terminal and base station scenario, the present application is also applicable to the IAB (Integrated Access and Backhaul) communication scenario, achieving technical effects similar to those 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, achieving technical effects similar to those in the TN scenario. Furthermore, although the original intention of this application is for the traditional communication waveform transmission scenario, this application is also applicable to the transmission scenario that combines communication and perception waveforms, achieving technical effects similar to those in the traditional pass-through waveform transmission scenario. In addition, adopting a unified solution for different scenarios also helps reduce hardware complexity and cost.

[0007] As an embodiment, the interpretation of terminology in this application refers to the definition of 3GPP specification protocol TS36 series.

[0008] As an embodiment, the interpretation of the terms in this application refers to the definitions of the 3GPP specification protocol TS37 series.

[0009] As an embodiment, the interpretation of the terms in this application refers to the definition of the 3GPP specification protocol TS38 series.

[0010] 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.

[0011] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0012] receiving a first RRC message including configuration information of a first candidate cell; determining that a link problem occurs in at least the PCell; starting a first timer in response to determining that a link problem occurs in at least the PCell; receiving first signaling; applying the configuration information of the first candidate cell in response to receiving the first signaling; and stopping the first timer;

[0013] The first signaling is signaling under the RRC sublayer, and the first signaling indicates the first candidate cell; when the first signaling is received, the first timer is running; and stopping the first timer depends on the first signaling being received.

[0014] As an embodiment, the problem to be solved by the present application includes: when to start the first timer.

[0015] As an embodiment, the characteristics of the above method include: determining that a link problem occurs in at least the PCell; and starting a first timer along with the determination that a link problem occurs in at least the PCell.

[0016] As an embodiment, the benefits of the above method include: reducing the modification of existing protocols.

[0017] As an embodiment, the problem to be solved by this application includes: how to determine the first signaling.

[0018] As an embodiment, the problem to be solved by the present application includes: how to determine the time to stop the first timer.

[0019] As an embodiment, the characteristics of the above method include: receiving a first signaling; and applying the configuration information of the first candidate cell in response to the reception of the first signaling.

[0020] As an embodiment, the characteristics of the above method include: the first signaling is signaling below the RRC sublayer, and the first signaling indicates the first candidate cell.

[0021] As an embodiment, the characteristics of the above method include: when the first signaling is received, the first timer is running; and stopping the first timer depends on the reception of the first signaling.

[0022] As an embodiment, the benefits of the above method include: reducing control signaling interaction.

[0023] As an embodiment, the benefits of the above method include: facilitating subsequent protocol modifications.

[0024] As an embodiment, the benefits of the above method include: being conducive to improving UE autonomy.

[0025] According to one aspect of the present application, it is characterized by comprising:

[0026] In response to determining that a link problem occurs in at least the PCell, setting a VarRLF-Report; and maintaining the VarRLF-Report along with stopping the first timer;

[0027] The first timer is T316; and the determination that a link problem occurs in at least the PCell is accompanied by the determination that a link problem occurs in the PCell refers to: when the MCG is detected to have an RLF and MCGFailureInformation is initiated.

[0028] As an embodiment, the problem to be solved by this application includes: when to set VarRLF-Report.

[0029] As an embodiment, the characteristics of the above method include: setting VarRLF-Report as a response to the determination that a link problem occurs in at least the PCell.

[0030] As an embodiment, the benefits of the above method include: reducing control signaling interaction.

[0031] As an embodiment, the problem to be solved by the present application includes: defining the behavior of determining that a link problem occurs in at least a PCell.

[0032] As an embodiment, the characteristics of the above method include: setting VarRLF-Report as a response to the determination that a link problem occurs in at least the PCell.

[0033] As an embodiment, the benefits of the above method include: being conducive to network optimization.

[0034] As an embodiment, the problem to be solved by the present application includes: defining a behavior accompanying the stopping of the first timer.

[0035] As an embodiment, the characteristics of the above method include: maintaining the VarRLF-Report

[0036] As an embodiment, the benefits of the above method include: being helpful in preventing data information from being lost.

[0037] As an embodiment, the benefits of the above method include: being helpful in reducing unnecessary power waste of UE.

[0038] As an embodiment, the problem to be solved by the present application includes: how to determine that at least a link problem occurs in the PCell.

[0039] As an embodiment, the characteristics of the above method include: the first timer is T316; the determination that a link problem occurs in at least the PCell refers to: when the MCG is detected to have an RLF and MCGFailureInformation is initiated.

[0040] As an embodiment, the benefits of the above method include: limiting the identity of the first timer.

[0041] As an embodiment, the benefits of the above method include: clarifying the scenario of determining that at least a link problem occurs in a PCell.

[0042] According to one aspect of the present application, it is characterized in that maintaining the VarRLF-Report depends on the first signaling.

[0043] As an embodiment, the problem to be solved by this application includes: how to determine whether the VarRLF-Report should be maintained.

[0044] As an embodiment, the characteristics of the above method include: maintaining the VarRLF-Report depends on the first signaling.

[0045] As an embodiment, the benefits of the above method include: clarifying the conditions for maintaining the VarRLF-Report.

[0046] According to one aspect of the present application, it is characterized in that maintaining the VarRLF-Report includes setting a first information block in the VarRLF-Report, and the first information block indicates the first candidate cell.

[0047] As an embodiment, the problem to be solved by this application includes: determining the behavior of maintaining the VarRLF-Report.

[0048] As an embodiment, the characteristics of the above method include: setting a first information block in the VarRLF-Report, and the first information block indicates the first candidate cell.

[0049] As an embodiment, the benefits of the above method include: being conducive to capability reporting on the UE side.

[0050] According to one aspect of the present application, it is characterized in that maintaining the VarRLF-Report includes setting a second information block in the VarRLF-Report, where the second information block indicates the first timer.

[0051] As an embodiment, the problem to be solved by this application includes: determining the behavior of maintaining the VarRLF-Report.

[0052] As an embodiment, the characteristics of the above method include: setting a second information block in the VarRLF-Report, and the second information block indicates the first timer.

[0053] As an embodiment, the benefits of the above method include: facilitating data collection.

[0054] As an embodiment, the benefits of the above method include: being conducive to network self-optimization and self-configuration.

[0055] According to one aspect of the present application, it is characterized by comprising:

[0056] Setting a third information block in a VarSuccessHO-Report as a response to the successful application of the configuration information of the first candidate cell;

[0057] The third information block indicates the reason for setting the VarSuccessHO-Report.

[0058] As an embodiment, the problem to be solved by the present application includes: when to set the third information block in the VarSuccessHO-Report.

[0059] As an embodiment, the problem to be solved by this application includes: how to determine the content of the third information block.

[0060] As an embodiment, the characteristics of the above method include: as a response to the successful application of the configuration information of the first candidate cell, setting a third information block in VarSuccessHO-Report.

[0061] As an embodiment, the characteristics of the above method include: the third information block indicates the reason for setting the VarSuccessHO-Report.

[0062] As an embodiment, the benefits of the above method include: reducing the modification of existing protocols.

[0063] According to one aspect of the present application, it is characterized by comprising:

[0064] receiving a second RRC message, where the second RRC message includes a first request indication;

[0065] sending a third RRC message in response to receiving the second RRC message;

[0066] The third RRC message includes information stored in at least one of the VarRLF-Report or the VarSuccessHO-Report, and the content of the third RRC message depends on the first request indication.

[0067] As an embodiment, the problem to be solved by this application includes: how to report stored information.

[0068] As an embodiment, the problem to be solved by this application includes: when to report the stored information.

[0069] As an embodiment, the characteristics of the above method include: receiving a second RRC message, wherein the second RRC message includes a first request indication; and sending a third RRC message as a response to the receipt of the second RRC message.

[0070] As an embodiment, the problem to be solved by this application includes: how to report stored information.

[0071] As an embodiment, the characteristics of the above method include: the third RRC message includes information stored in at least one of the VarRLF-Report or the VarSuccessHO-Report, and the content of the third RRC message depends on the first request indication.

[0072] As an embodiment, the benefits of the above method include: simple protocol implementation.

[0073] According to one aspect of the present application, it is characterized in that, in response to the expiration of the first timer, a first process is started and a first action is performed; wherein, the first timer is T310 or T312.

[0074] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0075] Sending a first RRC message, where the first RRC message includes configuration information of a first candidate cell; sending first signaling, where the first signaling is signaling under the RRC sublayer, and the first signaling indicates the first candidate cell;

[0076] In which, the receiver of the first RRC message determines that a link problem occurs in at least PCell; accompanying the determination that a link problem occurs in at least PCell, a first timer is started; as a response to the reception of the first signaling, the receiver of the first RRC message applies the configuration information of the first candidate cell; when the first signaling is received, the first timer is running; stopping the first timer depends on the reception of the first signaling.

[0077] According to one aspect of the present application, it is characterized in that as a response to the determination that a link problem occurs in at least PCell, the recipient of the first RRC message sets VarRLF-Report; accompanying the stopping of the first timer, the recipient of the first RRC message maintains the VarRLF-Report; wherein, the first timer is T316; the accompanying the determination that a link problem occurs in at least PCell refers to: when MCG is detected to have RLF and MCGFailureInformation is initiated.

[0078] According to one aspect of the present application, it is characterized in that maintaining the VarRLF-Report depends on the first signaling.

[0079] According to one aspect of the present application, it is characterized in that maintaining the VarRLF-Report includes setting a first information block in the VarRLF-Report, and the first information block indicates the first candidate cell.

[0080] According to one aspect of the present application, it is characterized in that maintaining the VarRLF-Report includes setting a second information block in the VarRLF-Report, where the second information block indicates the first timer.

[0081] According to one aspect of the present application, it is characterized in that as a response to the successful application of the configuration information of the first candidate cell, the recipient of the first RRC message sets a third information block in VarSuccessHO-Report; wherein the third information block indicates the reason for setting the VarSuccessHO-Report.

[0082] According to one aspect of the present application, it is characterized by comprising:

[0083] Transmitting a second RRC message, where the second RRC message includes the first request indication;

[0084] receiving a third RRC message in response to the second RRC message being sent;

[0085] The third RRC message includes information stored in at least one of the VarRLF-Report or the VarSuccessHO-Report, and the content of the third RRC message depends on the first request indication.

[0086] According to one aspect of the present application, it is characterized in that, in response to the expiration of the first timer, the recipient of the first RRC message starts a first process and performs a first action; wherein, the first timer is T310 or T312.

[0087] The present application discloses a first node used for wireless communication, characterized by comprising:

[0088] A first processor is configured to receive a first RRC message including configuration information of a first candidate cell; determine that a link problem occurs in at least the PCell; start a first timer in response to determining that the link problem occurs in at least the PCell; receive a first signaling; apply the configuration information of the first candidate cell in response to receiving the first signaling; and stop the first timer.

[0089] The first signaling is signaling under the RRC sublayer, and the first signaling indicates the first candidate cell; when the first signaling is received, the first timer is running; and stopping the first timer depends on the first signaling being received.

[0090] The present application discloses a second node used for wireless communication, characterized by comprising:

[0091] A second transmitter sends a first RRC message, where the first RRC message includes configuration information of a first candidate cell; and sends first signaling, where the first signaling is signaling under the RRC sublayer and indicates the first candidate cell.

[0092] In which, the receiver of the first RRC message determines that a link problem occurs in at least PCell; accompanying the determination that a link problem occurs in at least PCell, a first timer is started; as a response to the reception of the first signaling, the receiver of the first RRC message applies the configuration information of the first candidate cell; when the first signaling is received, the first timer is running; stopping the first timer depends on the reception of the first signaling.

[0093] As an example, compared with traditional solutions, this application has the following advantages:

[0094] Facilitates self-configuration and self-optimization for mobility;

[0095] -. It is helpful to reduce communication interruption delay;

[0096] -.It is conducive to improving the reliability of cell handover;

[0097] -. Facilitates rapid communication recovery;

[0098] -.It is helpful for base stations to obtain more information;

[0099] -. It is conducive to data collection BRIEF DESCRIPTION OF THE DRAWINGS

[0100] 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:

[0101] FIG1 shows a flow chart of communication of a first node according to an embodiment of the present application;

[0102] FIG2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

[0103] FIG3 is a schematic diagram showing an embodiment of a radio protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0104] FIG4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;

[0105] FIG5 shows a wireless signal transmission flow chart according to an embodiment of the present application;

[0106] FIG6 is a schematic diagram showing maintaining the VarRLF-Report along with stopping the first timer according to an embodiment of the present application;

[0107] FIG7 shows a schematic diagram of maintaining the VarRLF-Report dependent on the first signaling according to an embodiment of the present application;

[0108] FIG8 is a schematic diagram showing that maintaining the VarRLF-Report includes setting a first information block in the VarRLF-Report according to an embodiment of the present application;

[0109] FIG9 shows a schematic diagram of maintaining the VarRLF-Report including setting a second information block in the VarRLF-Report according to an embodiment of the present application;

[0110] FIG10 is a schematic diagram showing a configuration of a third information block in a VarSuccessHO-Report according to an embodiment of the present application;

[0111] FIG11 shows another wireless signal transmission flow chart according to an embodiment of the present application;

[0112] FIG12 is a schematic diagram showing a first action executed after a first timer expires according to an embodiment of the present application;

[0113] FIG13 shows a structural block diagram of a processing device used in a first node according to an embodiment of the present application;

[0114] FIG14 shows a structural block diagram of a processing device used in a second node according to an embodiment of the present application. DETAILED DESCRIPTION

[0115] 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.

[0116] Example 1

[0117] Example 1 illustrates a flow chart of communication of a first node according to an embodiment of the present application, as shown in Figure 1. In Figure 1, each box represents a step, and it is particularly important to emphasize that the order of the boxes in the figure does not represent the temporal sequence between the steps represented.

[0118] In Example 1, the first node in the present application receives a first RRC message in step 101, and the first RRC message includes configuration information of a first candidate cell; in step 102, it is determined that a link problem occurs in at least PCell; accompanying the determination that a link problem occurs in at least PCell, a first timer is started; in step 103, a first signaling is received; as a response to the reception of the first signaling, the configuration information of the first candidate cell is applied; the first timer is stopped; wherein the first signaling is signaling below the RRC sublayer, and the first signaling indicates the first candidate cell; when the first signaling is received, the first timer is running; and stopping the first timer depends on the reception of the first signaling.

[0119] As an embodiment, the first RRC message is UE-specific (UE-Specifc).

[0120] As an embodiment, the first RRC message is a cell common RRC message.

[0121] As an embodiment, the first RRC message is transmitted via a DCCH (Dedicated Control Channel).

[0122] As an embodiment, the first RRC message is transmitted via SCCH (Sidelink Control Channel).

[0123] As an embodiment, the first RRC message is transmitted via BCCH (Broadcast Control Channel).

[0124] As an embodiment, the first RRC message is transmitted via SRB0 (Signalling Radio Bearer 0).

[0125] As an embodiment, the first RRC message is transmitted via SRB1 (Signalling Radio Bearer 1).

[0126] As an embodiment, the first RRC message is transmitted via SRB3 (Signalling Radio Bearer 3).

[0127] As an embodiment, the first RRC message is transmitted via PDSCH (Physical Downlink Shared Channel).

[0128] As an embodiment, the first RRC message includes an RRCReconfiguration message.

[0129] As an embodiment, the first RRC message includes an RRCResume message.

[0130] As an embodiment, the first RRC message includes an RRCSetup message.

[0131] As an embodiment, the first RRC message includes an RRCReconfiguration-v1610-IEs.

[0132] As an embodiment, the first RRC message is an RRCReconfiguration message.

[0133] As an embodiment, the first RRC message is an RRCResume message.

[0134] As an embodiment, the first RRC message is an RRCSetup message.

[0135] As an embodiment, the first RRC message is an RRCReconfiguration-v1610-IEs.

[0136] As an embodiment, the first RRC message includes the configuration information of the first candidate cell, which means that the first RRC message includes a list of configuration information of multiple candidate cells, and the first candidate cell is at least one of the multiple candidate cells.

[0137] As an embodiment, the first RRC message includes the configuration information of the first candidate cell, which means that the first RRC message includes partial configuration information of the first candidate cell, and the partial configuration information is delta configuration information.

[0138] As an embodiment, the first RRC message includes the configuration information of the first candidate cell, which means that the first RRC message includes a configuration field, and the configuration field includes the configuration information of the first candidate cell.

[0139] As an embodiment, the name of the configuration domain includes conditional.

[0140] As an embodiment, the name of the configuration domain includes LTM.

[0141] As an embodiment, the one configuration domain is conditionalReconfiguration.

[0142] As an embodiment, the one configuration domain is ltm-config.

[0143] As an embodiment, the first RRC message includes the configuration information of the first candidate cell, which means that the first RRC message activates the configuration information of the first candidate cell stored by the first node.

[0144] As an embodiment, the first candidate cell is a PCell.

[0145] As an embodiment, the first candidate cell is a PSCell.

[0146] As an embodiment, the first candidate cell is a SpCell.

[0147] As an embodiment, the first candidate cell is a candidate PCell.

[0148] As an embodiment, the first candidate cell is a candidate PSCell.

[0149] As an embodiment, the first candidate cell is a candidate SpCell.

[0150] As an embodiment, the first candidate cell is an LTM candidate cell.

[0151] As an embodiment, the first candidate cell is a C-LTM candidate cell.

[0152] As an embodiment, the first candidate cell is an MCG LTM candidate cell.

[0153] As an embodiment, the first candidate cell is an SCG LTM candidate cell.

[0154] As an embodiment, the first candidate cell is a subsequent LTM candidate cell.

[0155] As an embodiment, the configuration information of the first candidate cell is for LTM.

[0156] As an embodiment, the configuration information of the first candidate cell includes LTM-Config IE.

[0157] As an embodiment, the configuration information of the first candidate cell is LTM-Config IE.

[0158] As an embodiment, the configuration information of the first candidate cell includes LTM-Candidate IE.

[0159] As an embodiment, the configuration information of the first candidate cell includes the timer T310.

[0160] As an embodiment, the configuration information of the first candidate cell includes the timer T312.

[0161] As an embodiment, the configuration information of the first candidate cell includes the timer T316.

[0162] As an embodiment, the configuration information of the first candidate cell includes a timer other than timers T310, T312, and T316.

[0163] As an embodiment, the configuration information of the first candidate cell includes measurement configuration.

[0164] As an embodiment, the measurement configuration includes configuration information required to perform L1 measurement or L3 measurement.

[0165] As an embodiment, the measurement configuration includes a measurement reference signal configuration.

[0166] As a sub-embodiment of the above embodiment, the measurement reference signal configuration refers to: SSB related configuration.

[0167] As a sub-embodiment of the above embodiment, the measurement reference signal configuration refers to: LTM-SSB-Config.

[0168] As a sub-embodiment of the above embodiment, the measurement reference signal configuration refers to: LTM-SSB-Config-r18.

[0169] As a sub-embodiment of the above embodiment, the measurement reference signal configuration refers to: CSI-related configuration.

[0170] As a sub-embodiment of the above embodiment, the measurement reference signal configuration refers to: LTM-CSI-Config.

[0171] As a sub-embodiment of the above embodiment, the measurement reference signal configuration refers to: LTM-CSI-Config-r19.

[0172] As a sub-embodiment of the above embodiment, the measurement reference signal configuration refers to: LTM-CSI-ResourceConfig-r18.

[0173] As a sub-embodiment of the above embodiment, the measurement reference signal configuration refers to: LTM-CSI-ResourceConfig-r19.

[0174] As a sub-embodiment of the above embodiment, the name of the measurement reference signal configuration includes LTM and CSI.

[0175] As an embodiment, the measurement configuration includes measurement reporting configuration.

[0176] As a sub-embodiment of the above embodiment, the measurement reporting configuration refers to: CSI-ReportConfig.

[0177] As a sub-embodiment of the above embodiment, the measurement reporting configuration refers to: LTM-CSI-ReportConfig-r18.

[0178] As a sub-embodiment of the above embodiment, the measurement reporting configuration refers to: L1 measurement reporting configuration.

[0179] As an embodiment, the configuration information of the first candidate cell includes a field indicating whether LTM fast recovery can be performed.

[0180] As an embodiment, the configuration information of the first candidate cell includes relevant configuration information instructing the UE to perform TA measurement.

[0181] As an embodiment, the configuration information of the first candidate cell includes random access configuration.

[0182] As an embodiment, the random access configuration includes the Preamble Index of the first candidate cell.

[0183] As an embodiment, the random access configuration includes the prach-ConfigurationIndex of the first candidate cell.

[0184] As an embodiment, the at least PCell is a PCell.

[0185] As an embodiment, the at least PCell is only PCell.

[0186] As an embodiment, the at least PCell is an MCG; the PCell is a primary cell of the MCG.

[0187] As an embodiment, the at least PCell is an MCG; the PCell is a primary cell of the MCG, and the first timer is any one of T310, T312, and T316.

[0188] As an embodiment, the at least PCell is a PCell and a PSCell, the PCell is a primary cell of an MCG, and the PSCell is a primary cell of an SCG.

[0189] As an embodiment, starting the first timer along with determining that a link problem occurs in at least the PCell means: starting the first timer when determining that a link problem occurs in at least the PCell.

[0190] As an embodiment, starting the first timer along with determining that a link problem occurs in at least the PCell means starting the first timer when at least determining that a link problem occurs in at least the PCell.

[0191] As an embodiment, starting the first timer along with determining that a link problem occurs in at least the PCell means starting the first timer as soon as it is determined that a link problem occurs in at least the PCell.

[0192] As an embodiment, the first timer is T310; the determination that a link problem occurs in at least the PCell refers to: when N310 consecutive out-of-sync indications are detected in the PCell.

[0193] As an embodiment, the first timer is T310; the determination that a link problem occurs in at least the PCell refers to: when N310 consecutive out-of-sync indications are detected in at least the PCell.

[0194] As an embodiment, the first timer is T310; the determination that a link problem occurs in at least the PCell refers to: only when N310 consecutive out-of-sync indications are detected in the PCell.

[0195] As an embodiment, the PCell is detected to have N310 consecutive out-of-sync indications, which means that N310 consecutive out-of-sync indications are received from a lower layer on the PCell.

[0196] As an embodiment, the PCell is detected to have N310 consecutive out-of-sync indications, which means that N310 consecutive out-of-sync indications are received from the lower layer on the PCell and at least any one of the timers T300, T301, T304, T311, T316, and T319 is not running.

[0197] As an embodiment, the PCell is detected to have N310 consecutive out-of-sync indications, which means that N311 consecutive in-sync indications from the lower layer are not received on the PCell when the first timer is running.

[0198] As an embodiment, when N310 consecutive out-of-sync indications are detected in the PCell, T310 is started.

[0199] As an embodiment, when at least N310 consecutive out-of-sync indications are detected in the PCell, T310 is started.

[0200] As an embodiment, once N310 consecutive out-of-sync indications are detected in the PCell, T310 is started.

[0201] As an embodiment, the first timer is T310, and the determination of a link problem in at least PCell refers to: when N310 consecutive out-of-sync indications are detected on at least PCell; the first signaling is LTM Cell switch MAC CE, and the first signaling indicates the first candidate cell as the target PCell; during the operation of the first timer, a first signaling is received, and as a response to the reception of the first signaling, the configuration information of the first candidate cell is applied, and the first timer is stopped.

[0202] As an embodiment, the first timer is T312; and the determination that a link problem occurs in at least the PCell is accompanied by the determination that a link problem occurs in the PCell refers to: when T310 of the PCell is running and a MeasurementReport is sent.

[0203] As an embodiment, the first timer is T312; the accompanying determination of a link problem in at least PCell refers to: when T310 of PCell is running and a MeasurementReport is sent and useT312 in reportConfig is set to true.

[0204] As an embodiment, the first timer is T312; the accompanying determination of a link problem in at least PCell refers to: when T310 of PCell is running and a MeasurementReport is sent and useT312 in reportConfig is set to true and T312 is not running.

[0205] As a sub-embodiment of the above embodiment, the running of T310 of the PCell means that N311 consecutive synchronization indications are not received from the lower layer.

[0206] As a sub-embodiment of the above embodiment, the T310 of the PCell being running means that the T310 of the PCell is not stopped.

[0207] As a sub-embodiment of the above embodiment, the T310 of the PCell being running means that the T310 of the PCell has not expired.

[0208] As a sub-embodiment of the above embodiment, the sending of a MeasurementReport means that a triggering condition of the MeasurementReport is satisfied.

[0209] As a sub-embodiment of the above embodiment, the sending of a MeasurementReport means that a triggering condition of the MeasurementReport is satisfied and related content is set.

[0210] As an embodiment, the T312 is configured to the MCG, and the PCell is the primary cell of the MCG; when the T310 of the PCell is running and a measurement target is configured with the T312 and the useT312 of the measurement target is set to true and the measurement report of the measurement target is triggered to be sent, the T312 is started.

[0211] As an embodiment, the T312 is configured to the MCG, and the PCell is the primary cell of the MCG; when at least the T310 of the PCell is running and a measurement target is configured with the T312 and the useT312 of the measurement target is set to true and the measurement report of the measurement target is triggered to be sent, the T312 is started.

[0212] As an embodiment, the first timer is T312, and the determination of a link problem in at least PCell refers to: when T310 of at least PCell is running and a MeasurementReport is sent; the first signaling is LTM Cell switch MAC CE, and the first signaling indicates the first candidate cell as the target PCell; during the operation of the first timer, a first signaling is received, and as a response to the reception of the first signaling, the configuration information of the first candidate cell is applied, and the first timer is stopped.

[0213] As an embodiment, the first timer is T316; the determination that a link problem occurs in at least the PCell is when MCGFailureInformation is initiated.

[0214] As an embodiment, the first timer is T316; the determination that a link problem occurs in at least the PCell is accompanied by the determination that a link problem occurs in the PCell refers to: when the MCG is detected to have an RLF and MCGFailureInformation is initiated.

[0215] As an example, when the MCG is detected to have RLF and MCGFailureInformation is initiated, it depends on T316 not being running.

[0216] As an embodiment, when the MCG is detected as RLF and MCGFailureInformation is initiated, T316 of the PCell is configured and the T316 is not running.

[0217] As a sub-embodiment of the above embodiment, the RLF detection of the MCG means that the T310 configured in the PCell of the MCG expires.

[0218] As a sub-embodiment of the above embodiment, the RLF detection of the MCG means that the T312 configured in the PCell of the MCG expires.

[0219] As a sub-embodiment of the above embodiment, when the MCG is detected to have RLF and MCGFailureInformation is initiated, the transmission between the MCG and SCG is not suspended and the SCG is not deactivated.

[0220] As a sub-embodiment of the above embodiment, when the transmission between the MCG and SCG is not suspended and the SCG is not deactivated, the MCG is detected to have an RLF and MCGFailureInformation is initiated.

[0221] As a sub-embodiment of the above embodiment, when at least the transmission of the MCG and SCG is not suspended and the SCG is not deactivated, the MCG is detected to have an RLF and MCGFailureInformation is initiated.

[0222] As an embodiment, when the MCG is detected to have RLF and the MCGFailureInformation is initiated, T316 is started.

[0223] As an embodiment, when at least the MCG is detected to be RLF and the MCGFailureInformation is initiated, T316 is started.

[0224] As an embodiment, T316 is started as soon as the MCG is detected as RLF and the MCGFailureInformation is initiated.

[0225] As an embodiment, the MCGFailureInformation is initiated to start the MCG fast recovery program.

[0226] As an embodiment, the MCGFailureInformation is initiated by setting the content in the MCGFailureInformation message.

[0227] As an embodiment, the MCGFailureInformation being initiated means: delivering the MCGFailureInformation message to a lower layer.

[0228] As an embodiment, the MCGFailureInformation being initiated means that the MCGFailureInformation message is sent.

[0229] As an embodiment, when the MCG is detected to be RLF means that: T310 of the MCG expires.

[0230] As an embodiment, when the MCG is detected to be RLF means that: T312 of the MCG expires.

[0231] As an embodiment, the first timer is T316, and the determination of a link problem in at least PCell refers to: when the MCG is detected as RLF and MCGFailureInformation is initiated; the first signaling is MCG LTM Cell switch MAC CE, and the first signaling indicates the first candidate cell as the target PCell; during the operation of the first timer, a first signaling is received, and as a response to the reception of the first signaling, the configuration information of the first candidate cell is applied, and the first timer is stopped.

[0232] As an embodiment, the first timer is T316, and the determination of a link problem in at least PCell refers to: when the MCG is detected as RLF and MCGFailureInformation is initiated; the first signaling is MCG LTM Cell switch MAC CE, and the first signaling indicates the first candidate cell as the target PCell; during the operation of the first timer, the first signaling is received, and as a response to the reception of the first signaling, the configuration information of the first candidate cell is applied, the first timer is stopped, and the RRC message is no longer received from the SCG.

[0233] As an embodiment, stopping the first timer means that the MCG fast recovery procedure is completed.

[0234] As an embodiment, stopping the first timer means that the MCG fast recovery program is canceled.

[0235] As an embodiment, the first signaling is used to initiate the RRC reestablishment procedure.

[0236] As an embodiment, the first signaling is used to initiate a cell switching procedure.

[0237] As an embodiment, the first signaling is a MAC sublayer signaling.

[0238] As an embodiment, the first signaling is an LTM Cell switch MAC CE.

[0239] As an embodiment, the first signaling is an MCG LTM Cell switch MAC CE.

[0240] As an embodiment, the first signaling is an SCG LTM Cell switch MAC CE.

[0241] As an embodiment, the first signaling indicating the first candidate cell means that the first signaling indicates handover to the first candidate cell.

[0242] As an embodiment, the first signaling indicating the first candidate cell means that the first signaling indicates the configuration information of the first candidate cell.

[0243] As an embodiment, the first signaling indicating the first candidate cell means that the first signaling indicates an application condition for evaluating the configuration information of the first candidate cell.

[0244] As an embodiment, the first signaling indicating the first candidate cell means that the first signaling activates the configuration information of the first candidate cell.

[0245] As an embodiment, the first signaling indicating the first candidate cell means that the first signaling indicates the application of the configuration information of the first candidate cell.

[0246] As an embodiment, the first signaling indicating the first candidate cell means that the first signaling indicates a switch to the first candidate cell.

[0247] As an embodiment, the first signaling indicating the first candidate cell means that the first signaling indicates the cell identifier of the first candidate cell.

[0248] As a sub-embodiment of the above embodiment, the cell identifier is a logical identifier.

[0249] As a sub-embodiment of the above embodiment, the cell identifier includes NCGI (NR Cell Global Identifier).

[0250] As a sub-embodiment of the above embodiment, the cell identifier includes a CGI (Cell Global Identifier).

[0251] As a sub-embodiment of the above embodiment, the cell identifier includes a PLMN (Public Land Mobile Network).

[0252] As a sub-embodiment of the above embodiment, the cell identifier includes SNPN (Stand-alone Non-Public Network).

[0253] As a sub-embodiment of the above embodiment, the cell identifier includes one of NCGI, CGI, and PLMN.

[0254] As a sub-embodiment of the above embodiment, the cell identifier includes a PLMN and a CGI.

[0255] As a sub-embodiment of the above embodiment, the cell identifier is a bit string.

[0256] As a sub-embodiment of the above embodiment, the cell identifier uniquely indicates any cell in a tracking area (Tracking Area).

[0257] As a sub-embodiment of the above embodiment, the cell identifier uniquely indicates any one cell in multiple tracking areas.

[0258] As a sub-embodiment of the above embodiment, the cell identifier uniquely indicates any cell within a PLMN.

[0259] As a sub-embodiment of the above embodiment, the cell identifier uniquely indicates any one cell in multiple PLMNs.

[0260] As a sub-embodiment of the above embodiment, the cell identifier uniquely indicates any cell within a SNPN.

[0261] As a sub-embodiment of the above embodiment, the cell identifier uniquely indicates any one cell within multiple SNPNs.

[0262] As a sub-embodiment of the above embodiment, the cell identity includes a global cell identity (Cell Global Identity).

[0263] As a sub-embodiment of the above embodiment, the cell identifier is a global cell identifier and a tracking area code (Tracking Area Code).

[0264] As a sub-embodiment of the above embodiment, the cell identifier includes a cell PCI (Physical Cell Identity).

[0265] As a sub-embodiment of the above embodiment, the cell identifier is the cell PCI and carrier frequency (Carrier Frequency).

[0266] As a sub-embodiment of the above embodiment, if the global cell identifier and tracking area code of the first candidate cell are available, the cell identifier is the global cell identifier and tracking area code of the first candidate cell; otherwise, the cell identifier is the cell PCI.

[0267] As an embodiment, once the first signaling is received, the configuration information of the first candidate cell is applied.

[0268] As an embodiment, when the first signaling is received, the configuration information of the first candidate cell is applied.

[0269] As an embodiment, when at least the first signaling is received, the configuration information of the first candidate cell is applied.

[0270] As an embodiment, when the first signaling is delivered to a higher layer, the configuration information of the first candidate cell is applied.

[0271] As an embodiment, when the first signaling is transmitted to the RRC sublayer, the configuration information of the first candidate cell is applied.

[0272] As an embodiment, applying the configuration information of the first candidate cell includes: selecting the first candidate cell.

[0273] As an embodiment, applying the configuration information of the first candidate cell includes: performing switching in the first candidate cell.

[0274] As an embodiment, applying the configuration information of the first candidate cell includes: performing random access in the first candidate cell.

[0275] As an embodiment, the applying of the configuration information of the first candidate cell includes: performing uplink data transmission in the first candidate cell.

[0276] As an embodiment, applying the configuration information of the first candidate cell includes: applying the Reconfigurationwithsync domain of the first candidate cell.

[0277] As an embodiment, the configuration information of applying the first candidate cell includes: applying the newUE-Identity of the first candidate cell.

[0278] As an embodiment, the application of the configuration information of the first candidate cell includes: resetting the value of the first timer.

[0279] As an embodiment, the applying of the configuration information of the first candidate cell includes: resetting the MAC entity of the MCG.

[0280] As an embodiment, the applying of the configuration information of the first candidate cell includes: downlink synchronization to the first candidate cell.

[0281] As an embodiment, applying the configuration information of the first candidate cell includes: performing random access to the first candidate cell.

[0282] As an embodiment, the applying of the configuration information of the first candidate cell includes: configuring a radio link monitoring reference signal.

[0283] As an embodiment, when the first signaling is received, the first timer is running.

[0284] As an embodiment, the first timer is running when at least the first signaling is received.

[0285] As an embodiment, when the first timing is running, no other RRC layer messages are received before the first signaling is received.

[0286] As an embodiment, the first signaling is received while the first timer is running.

[0287] As an embodiment, the first signaling is received when at least the first timer is running.

[0288] As an embodiment, the first signaling can be received only when the first timer is running.

[0289] As an embodiment, the stopping of the first timer depends on the first signaling being received, and the first timer is running when the first signaling is received.

[0290] As an embodiment, the first timer can be stopped only when the first timer is running when the first signaling is received.

[0291] As an embodiment, the first timer can be stopped only when the first timer is running when at least the first signaling is received.

[0292] As an embodiment, stopping the first timer depending on the first signaling being received means: stopping the first timer once the first signaling is received.

[0293] As an embodiment, the stopping of the first timer depending on the reception of the first signaling means that the reception of the first signaling triggers the stopping of the first timer.

[0294] As an embodiment, stopping the first timer depending on the first signaling being received means: stopping the first timer when the first signaling is received.

[0295] As an embodiment, stopping the first timer depending on the first signaling being received means: stopping the first timer when at least the first signaling is received.

[0296] As an embodiment, stopping the first timer depending on the first signaling being received means: stopping the first timer as a response to the first signaling being received.

[0297] As an embodiment, stopping the first timer depending on the first signaling being received means: stopping the first timer when the first signaling is executed.

[0298] As an embodiment, stopping the first timer depending on the first signaling being received means: stopping the first timer as a response to the execution of the first signaling.

[0299] As an embodiment, stopping the first timer depending on the reception of the first signaling means that: when the first signaling is received, the MAC sublayer sends the indication to the upper layer; once the upper layer of the MAC sublayer receives the indication, the first timer is stopped.

[0300] As an embodiment, stopping the first timer depending on the reception of the first signaling means that: when the first signaling is received, the MAC sublayer sends the indication to the upper layer; once the RRC sublayer receives the indication, the first timer is stopped.

[0301] As an embodiment, stopping the first timer depending on the reception of the first signaling means that: when the first signaling is received, the MAC sublayer sends the indication to the upper layer; and after the RRC sublayer receives the indication, it stops the first timer.

[0302] As an embodiment, stopping the first timer depending on the first signaling being received means: stopping the first timer after receiving the first signaling and before determining to apply the configuration information of the first candidate cell.

[0303] As an embodiment, stopping the first timer depending on the first signaling being received means: after receiving the first signaling and determining to apply the configuration information of the first candidate cell, stopping the first timer.

[0304] As an embodiment, stopping the first timer in dependence on the first signaling being received means that: when the candidate configuration of the first candidate cell indicated by the first signaling begins to be applied, the first timer is stopped.

[0305] As an embodiment, stopping the first timer in dependence on the first signaling being received means that the first timer is stopped when the Reconfiguration with sync process for the first candidate cell starts to be executed.

[0306] As an embodiment, stopping the first timer in dependence on the first signaling being received means: stopping the first timer during the execution of the Reconfiguration with sync process for the first candidate cell.

[0307] As an embodiment, stopping the first timer depending on the first signaling being received means: once the configuration information of the first candidate cell is applied, the first timer is stopped.

[0308] As an embodiment, stopping the first timer depending on the first signaling being received means: stopping the first timer when the configuration information of the first candidate cell is applied.

[0309] As an embodiment, stopping the first timer depending on the first signaling being received means: stopping the first timer when at least the configuration information of the first candidate cell is applied.

[0310] As an embodiment, stopping the first timer in dependence on the first signaling being received means: stopping the first timer as a response to starting to apply the configuration information of the first candidate cell.

[0311] As an embodiment, stopping the first timer depending on the reception of the first signaling means: applying the configuration information of the first candidate cell as a response to the reception of the first signaling; and applying the configuration information of the first candidate cell includes stopping the first timer.

[0312] As an embodiment, stopping the first timer depending on the reception of the first signaling means: applying the configuration information of the first candidate cell as a response to the reception of the first signaling; and applying the configuration information of the first candidate cell includes resetting the value of the first timer.

[0313] As an embodiment, stopping the first timer depending on the reception of the first signaling means: applying the configuration information of the first candidate cell as a response to the reception of the first signaling; and the act of applying the configuration information of the first candidate cell triggers stopping the first timer.

[0314] As an embodiment, stopping the first timer depending on the first signaling being received means: when it is determined that the configuration information of the first candidate cell is successfully applied, stopping the first timer.

[0315] As an embodiment, stopping the first timer in dependence on the first signaling being received means: stopping the first timer as a response to the configuration information of the first candidate cell being successfully applied.

[0316] Example 2

[0317] Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in FIG2 . FIG2 illustrates a network architecture 200 of a 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system. The 5G NR / LTE / LTE-A network architecture 200 may be referred to as a 5G System (5G System) / EPS (Evolved Packet System) 200 or some other appropriate terminology. The 5GS / EPS 200 includes at least one of a UE (User Equipment) 201, a RAN (Radio Access Network) 202, a 5G Core Network (5G Core Network) / EPC (Evolved Packet Core) 210, an HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and an Internet service 230. 5GS / EPS can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown, 5GS / EPS 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. Node 203 provides an access point to the 5GC / EPC 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 5GC / EPC 210 via an S1 / NG interface. 5GC / EPC 210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MMEs / AMFs / SMFs 214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF 213. MME / AMF / SMF 211 is a control node that handles signaling between UE 201 and 5GC / EPC 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.

[0318] As an embodiment, the UE201 corresponds to the first node in this application.

[0319] As an embodiment, the UE 201 is a user equipment (UE).

[0320] As an embodiment, the UE 201 is a base station (BS).

[0321] As an embodiment, the UE 201 is a relay device.

[0322] As an embodiment, the UE 201 is a gateway device.

[0323] As an embodiment, the node 203 corresponds to the second node in this application.

[0324] As an embodiment, the node 203 is a base station device.

[0325] As an embodiment, the node 203 is a user equipment.

[0326] As an embodiment, the node 203 is a relay device.

[0327] As an embodiment, the node 203 is a gateway device.

[0328] Typically, the UE 201 is a user equipment, and the node 203 is a base station device.

[0329] Typically, the UE 201 is a user equipment, and the node 203 is a user equipment.

[0330] Typically, the UE 201 is a base station device, and the node 203 is a base station device.

[0331] As an embodiment, the user equipment supports transmission of a non-terrestrial network (NTN).

[0332] As an embodiment, the user equipment supports transmission via a terrestrial network (Terrestrial Network).

[0333] As an embodiment, the user equipment supports dual connection (DC) transmission.

[0334] As an embodiment, the user equipment includes an aircraft.

[0335] As an embodiment, the user equipment includes a vehicle-mounted terminal.

[0336] As an embodiment, the user equipment includes a vessel.

[0337] As an embodiment, the user equipment includes an Internet of Things terminal.

[0338] As an embodiment, the user equipment includes a terminal of the Industrial Internet of Things.

[0339] As an embodiment, the user equipment includes a device that supports low-latency and high-reliability transmission.

[0340] As an embodiment, the user equipment includes a test device.

[0341] As an embodiment, the user equipment includes a signaling tester.

[0342] As an embodiment, the user equipment includes an IAB (Integrated Access and Backhaul)-MT.

[0343] As an embodiment, the user equipment supports generating reports using AI (Artificial Intelligence) or machine learning.

[0344] As an embodiment, the user equipment supports dynamic switching using AI (Artificial Intelligence) or machine learning (Machine Learning).

[0345] As an embodiment, the user equipment supports using AI (Artificial Intelligence) or machine learning (Machine Learning) to store network self-optimization related information.

[0346] As an embodiment, the user equipment supports generating a trained model using training data or generating part of the parameters in the trained model using trained data.

[0347] As an embodiment, the user equipment supports applying the first RRC message through training.

[0348] As an embodiment, the user equipment supports determining at least part of the information in the first RRC message through training.

[0349] As an embodiment, the user equipment is a terminal supporting Massive-MIMO.

[0350] As an embodiment, the base station device supports transmission in a non-terrestrial network.

[0351] As an embodiment, the base station device supports transmission of a terrestrial network.

[0352] As an embodiment, the base station equipment includes a base transceiver station (Base Transceiver Station, BTS).

[0353] As an embodiment, the base station device includes a Node B (NB).

[0354] As an embodiment, the base station device includes a gNB.

[0355] As an embodiment, the base station device includes an eNB.

[0356] As an embodiment, the base station device includes ng-eNB.

[0357] As an embodiment, the base station device includes an en-gNB.

[0358] As an embodiment, the base station device includes a CU (Centralized Unit).

[0359] As an embodiment, the base station device includes a DU (Distributed Unit).

[0360] As an embodiment, the base station device includes a TRP (Transmitter Receiver Point).

[0361] As an embodiment, the base station device includes a macro cellular (Marco Cellular) base station.

[0362] As an embodiment, the base station device includes a micro cell base station.

[0363] As an embodiment, the base station device includes a pico cell (Pico Cell) base station.

[0364] As an embodiment, the base station device includes a home base station (Femtocell).

[0365] As an embodiment, the base station device includes a flying platform device.

[0366] As an embodiment, the base station device includes a satellite device.

[0367] As an embodiment, the base station device includes a testing device.

[0368] As an embodiment, the base station equipment includes a signaling tester.

[0369] As an embodiment, the base station device includes a gateway device.

[0370] As an embodiment, the base station device includes an IAB-node.

[0371] As an embodiment, the base station device includes an IAB-donor.

[0372] As an embodiment, the base station device includes an IAB-donor-CU.

[0373] As an embodiment, the base station device includes an IAB-donor-DU.

[0374] As an embodiment, the base station device includes an IAB-DU.

[0375] As an embodiment, the base station device includes an IAB-MT.

[0376] As an embodiment, the base station device supports transmission based on Massive-MIMO.

[0377] As an embodiment, the base station device supports network self-optimization and self-configuration.

[0378] As an embodiment, the base station device supports decompression of CSI using AI or deep learning.

[0379] As an embodiment, the base station device supports mobility management using AI or deep learning.

[0380] Example 3

[0381] Embodiment 3 illustrates a schematic diagram of an embodiment of a radio protocol architecture for a user plane and a control plane according to the present application, as shown in FIG3 . FIG3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300. FIG3 illustrates the radio protocol architecture for the control plane 300 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 is above PHY 301 and includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a 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 inter-zone mobility. 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 generally identical to the corresponding layers and sublayers in the control plane 300, including 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 the SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping QoS flows to data radio bearers (DRBs) to support service diversity.

[0382] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the first node in this application.

[0383] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the second node in this application.

[0384] As an embodiment, the first RRC message in this application is generated in the RRC306.

[0385] As an embodiment, the second RRC message in this application is generated in the RRC306.

[0386] As an embodiment, the third RRC message in this application is generated in the RRC306.

[0387] As an embodiment, the first signaling in this application is generated by the MAC302.

[0388] As an embodiment, the first signaling in this application is generated by the PHY301.

[0389] Example 4

[0390] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in Figure 4. 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.

[0391] 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 .

[0392] 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 .

[0393] 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.

[0394] 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 second 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.

[0395] 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.

[0396] 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.

[0397] As an embodiment, the first communication device 450 corresponds to the first node in the present application; 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 including configuration information of a first candidate cell; determines that a link problem occurs in at least PCell; starts a first timer accompanying the determination that a link problem occurs in at least PCell; receives a first signaling; applies the configuration information of the first candidate cell as a response to the reception of the first signaling; stops the first timer; wherein the first signaling is signaling below the RRC sublayer, and the first signaling indicates the first candidate cell; when the first signaling is received, the first timer is running; and stopping the first timer depends on the reception of the first signaling.

[0398] As an embodiment, the first communication device 450 corresponds to the first node in the present application; the first communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating an action when executed by at least one processor, the action including: receiving a first RRC message, the first RRC message including configuration information of a first candidate cell; determining that a link problem occurs at least in PCell; starting a first timer accompanying the determination that a link problem occurs in at least in PCell; receiving a first signaling; applying the configuration information of the first candidate cell as a response to the reception of the first signaling; stopping the first timer; wherein the first signaling is signaling below the RRC sublayer, the first signaling indicates the first candidate cell; when the first signaling is received, the first timer is running; stopping the first timer depends on the reception of the first signaling.

[0399] As an embodiment, the second communication device 410 corresponds to the second node in the present application; 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 together with the at least one processor. The second communication device 410 at least: sends a first RRC message, the first RRC message includes configuration information of a first candidate cell; sends a first signaling, the first signaling is signaling below the RRC sublayer, and the first signaling indicates the first candidate cell; wherein the recipient of the first RRC message determines that a link problem occurs in at least PCell; accompanying the determination that a link problem occurs in at least PCell, a first timer is started; as a response to the reception of the first signaling, the recipient of the first RRC message applies the configuration information of the first candidate cell; when the first signaling is received, the first timer is running; stopping the first timer depends on the reception of the first signaling.

[0400] As an embodiment, the second communication device 410 corresponds to the second node in the present application; the second communication device 410 includes: a memory storing a computer-readable instruction program, 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 including configuration information of a first candidate cell; sending a first signaling, the first signaling is a signaling below the RRC sublayer, and the first signaling indicates the first candidate cell; wherein, the recipient of the first RRC message determines that a link problem occurs in at least PCell; accompanying the determination that a link problem occurs in at least PCell, a first timer is started; as a response to the first signaling being received, the recipient of the first RRC message applies the configuration information of the first candidate cell; when the first signaling is received, the first timer is running; stopping the first timer depends on the first signaling being received.

[0401] 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 a first RRC message.

[0402] 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 a first RRC message.

[0403] 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 a second RRC message.

[0404] As an embodiment, at least one of the antenna 452, the receiver 454, the reception processor 456, and the controller / processor 459 is used to receive a second RRC message.

[0405] 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 a third RRC message.

[0406] As an embodiment, at least one of the antenna 420, the receiver 418, the receiving processor 470, and the controller / processor 475 is used to receive a third RRC message

[0407] As an embodiment, the first communication device 450 corresponds to the first node in this application.

[0408] As an embodiment, the second communication device 410 corresponds to the second node in this application.

[0409] As an embodiment, the first communication device 450 is a user equipment.

[0410] As an embodiment, the first communication device 450 is a base station device.

[0411] As an embodiment, the first communication device 450 is a relay device.

[0412] As an embodiment, the second communication device 410 is a user equipment.

[0413] As an embodiment, the second communication device 410 is a base station device.

[0414] As an embodiment, the second communication device 410 is a relay device.

[0415] Example 5

[0416] Example 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in FIG5. It should be noted that the order in this example does not limit the signal transmission order and implementation order in the present application.

[0417] For the first node U01, in step S5101, a first RRC message is received, which includes configuration information of the first candidate cell; in step S5102, it is determined that a link problem occurs in at least PCell; in step S5103, along with the determination that a link problem occurs in at least PCell, a first timer is started; in step S5104, a first signaling is received; in step S5105, the first timer is stopped; in step S5106, VarRLF-Report is maintained;

[0418] For the second node N02, in step S5201, the first RRC message is sent; in step S5202, the first signaling is sent.

[0419] In embodiment 5, the first signaling is signaling below the RRC sublayer, and the first signaling indicates the first candidate cell; when the first signaling is received, the first timer is running; and stopping the first timer depends on the first signaling being received.

[0420] As an embodiment, the first node is a UE.

[0421] As an embodiment, the first node is a UE supporting 3GPP R19.

[0422] As an embodiment, the first node is a UE supporting SON / MDT.

[0423] As an embodiment, the first node is a UE supporting information storage.

[0424] As an embodiment, the first node is not a UE.

[0425] As an embodiment, the first node U01 and the second node N02 are connected wirelessly.

[0426] As an embodiment, the first node U01 and the second node N02 are connected via a wired connection.

[0427] As an embodiment, the first node U01 and the second node N02 are connected via a Uu port.

[0428] As an embodiment, the first node U01 and the second node N02 are connected via an IAB port.

[0429] As an embodiment, the first node U01 and the second node N02 are connected via a PC5 interface.

[0430] As an embodiment, the second node N02 is a cell served by the first node U01.

[0431] As an embodiment, the second node N02 is a maintaining base station of the current serving cell.

[0432] As an embodiment, the second node N02 is the currently serving MN.

[0433] As an embodiment, the second node N02 is a maintaining base station of the first candidate cell.

[0434] As an embodiment, the second node N02 is a maintaining base station of a subsequent candidate cell of the first candidate cell.

[0435] As an embodiment, the first node U01 receives the first RRC message.

[0436] As a sub-embodiment of the above embodiment, before receiving the first message, the first node U01 is connected to a serving cell.

[0437] As a sub-embodiment of the above embodiment, the connection is to perform handover.

[0438] As a sub-embodiment of the above embodiment, the connection is to perform a switch.

[0439] As a sub-embodiment of the above embodiment, the connection is to perform initial access.

[0440] As a sub-embodiment of the above embodiment, the connection is to perform random access.

[0441] As a sub-embodiment of the above embodiment, the connection is to perform a reconnection.

[0442] As a sub-embodiment of the above embodiment, after the first RRC message is received, the first node U01 applies the configuration information of the first candidate cell.

[0443] As a sub-embodiment of the above embodiment, after the first RRC message is received, the first node U01 stores the configuration of the first candidate cell.

[0444] As a sub-embodiment of the above embodiment, after the first RRC message is received, the first node U01 applies the measurement configuration information of the first candidate cell.

[0445] As an embodiment, the first node U01 determines that a link problem occurs in at least PCell.

[0446] As a sub-embodiment of the above embodiment, the determining that a link problem occurs in at least the PCell occurs after the first RRC message is received.

[0447] As a sub-embodiment of the above embodiment, the determination of whether at least a link problem occurs in the PCell depends on configuration information of a serving cell to which the first node U01 is currently connected.

[0448] As a sub-embodiment of the above embodiment, the determination that a link problem occurs in at least PCell depends on the configuration information of the service cell to which the first node U01 is currently connected, which means: the determination that a link problem occurs in at least PCell is: N310 "out-of-sync" indications are detected; the value of N310 is configured by the configuration information of the currently connected service cell.

[0449] As a sub-embodiment of the above embodiment, the determination that a link problem occurs at least in PCell depends on the configuration information of the service cell to which the first node U01 is currently connected, which means that the determination that a link problem occurs at least in PCell is: when T310 of PCell is running and a MeasurementReport is sent; useT312 in reportConfig is set to true and is configured by the configuration information of the currently connected service cell.

[0450] As a sub-embodiment of the above embodiment, the determination that a link problem occurs in at least PCell depends on the configuration information of the service cell to which the first node U01 is currently connected, which means that the determination that a link problem occurs in at least PCell is: when the MCG is detected to have RLF and MCGFailureInformation is initiated; the value of the timer associated with the MCG being detected to have RLF is configured by the configuration information of the currently connected service cell.

[0451] As an embodiment, following the determination that a link problem occurs in at least the PCell, the first node U01 starts a first timer.

[0452] As an embodiment, the first timer is T310, and the determination of a link problem occurring at least in the PCell is: when N310 “out-of-sync” indications are detected.

[0453] As an embodiment, the first timer is T312, and the determining that a link problem occurs in at least the PCell is: when T310 of the PCell is running and a MeasurementReport is sent.

[0454] As an embodiment, the first timer is T316, and the determination of a link problem occurring at least in the PCell is: when the MCG is detected to have RLF and MCGFailureInformation is initiated.

[0455] As a sub-embodiment of the above embodiment, once it is determined that a link problem occurs in at least the PCell, the first node U01 starts a first timer.

[0456] As a sub-embodiment of the above embodiment, when it is determined that a link problem occurs in at least the PCell, the first node U01 starts a first timer.

[0457] As a sub-embodiment of the above embodiment, when it is determined that a link problem occurs in at least the PCell, the first node U01 starts a first timer.

[0458] As a sub-embodiment of the above embodiment, in response to determining that a link problem occurs in at least the PCell, the first node U01 starts a first timer.

[0459] As an embodiment, the first node U01 receives first signaling.

[0460] As a sub-embodiment of the above embodiment, after starting the first timer, the first node U01 receives first signaling.

[0461] As a sub-embodiment of the above embodiment, when the first timer is started and is running, the first node U01 receives the first signaling.

[0462] As a sub-embodiment of the above embodiment, when the first timer is started and is running, the first node U01 monitors the first signaling.

[0463] As an embodiment, the first node U01 stops the first timer.

[0464] As a sub-embodiment of the above embodiment, stopping the first timer depends on receiving the first signaling.

[0465] As a sub-embodiment of the above embodiment, when the first signaling is received, the first timer is stopped.

[0466] As a sub-embodiment of the above embodiment, when the first signaling is received and when the first timer is running, the first timer is stopped.

[0467] As an embodiment, step S5106 exists.

[0468] As an embodiment, the first node U01 maintains the VarRLF-Report.

[0469] As a sub-embodiment of the above embodiment, after the first node U01 stops the first timer, it maintains the VarRLF-Report.

[0470] As a sub-embodiment of the above embodiment, when the first node U01 stops the first timer due to receiving the first signaling, the VarRLF-Report is maintained.

[0471] As a sub-embodiment of the above embodiment, when the first node U01 stops the first timer not due to receiving the first signaling, the VarRLF-Report is maintained.

[0472] As a sub-embodiment of the above embodiment, when the first node U01 stops the first timer not due to receiving the first signaling, it is determined whether to maintain the VarRLF-Report according to the configuration information in the first node U01.

[0473] As an embodiment, step S5106 does not exist.

[0474] As a sub-embodiment of the above embodiment, when the first node U01 stops the first timer not due to receiving the first signaling, the VarRLF-Report is not maintained.

[0475] Example 6

[0476] Example 6 illustrates a schematic diagram of maintaining the VarRLF-Report along with stopping the first timer according to an embodiment of the present application, as shown in FIG6 .

[0477] In Example 6, as a response to determining that a link problem occurs in at least PCell, VarRLF-Report is set; accompanied by stopping the first timer, the VarRLF-Report is maintained; wherein, the first timer is T316; the accompanying determination that a link problem occurs in at least PCell refers to: when MCG is detected to have an RLF and MCGFailureInformation is initiated.

[0478] As an embodiment, once it is determined that a link problem occurs in at least the PCell, VarRLF-Report is set.

[0479] As an embodiment, when it is determined that a link problem occurs in at least the PCell, VarRLF-Report is set.

[0480] As an embodiment, when it is determined that a link problem occurs in at least the PCell, VarRLF-Report is set.

[0481] As an embodiment, the setting of the VarRLF-Report includes: clearing information included in the VarRLF-Report.

[0482] As an embodiment, the setting of VarRLF-Report includes: setting the type of link problem determined to occur in at least the PCell.

[0483] As an embodiment, the setting of VarRLF-Report includes: setting the reason for determining that a link problem occurs in at least the PCell.

[0484] As an embodiment, the setting of VarRLF-Report includes: setting a measurement result when determining that at least a link problem occurs in the PCell.

[0485] As an embodiment, the setting of VarRLF-Report includes: setting candidate cell information when it is determined that at least a link problem occurs in the PCell.

[0486] As an embodiment, the setting of VarRLF-Report includes: setting the cell identifier of the PSCell when it is determined that at least the PCell has a link problem, if any.

[0487] As an embodiment, the setting of VarRLF-Report includes: setting time information of determining that a link problem occurs in at least the PCell.

[0488] As an embodiment, the response to determining that a link problem occurs in at least the PCell refers to: when RLF is detected in the MCG.

[0489] As an embodiment, the response to determining that a link problem occurs in at least the PCell refers to: when an RLF is detected in the MCG and the MCGInformation is initiated.

[0490] As an embodiment, the response to determining that a link problem occurs in at least the PCell refers to: detecting a random access problem at the MAC layer of the MCG.

[0491] As an embodiment, the response to determining that a link problem occurs in at least the PCell refers to: reaching a maximum number of retransmissions at the RLC layer of the MCG.

[0492] As an embodiment, the VarRLF-Report is set before starting the first timer.

[0493] As an embodiment, the VarRLF-Report is set before at least starting the first timer.

[0494] As an embodiment, the VarRLF-Report has been set before the first timer is triggered to start.

[0495] As an embodiment, maintaining the VarRLF-Report along with stopping the first timer means: maintaining the VarRLF-Report when stopping the first timer.

[0496] As an embodiment, maintaining the VarRLF-Report along with stopping the first timer means: maintaining the VarRLF-Report when at least the first timer is stopped.

[0497] As an embodiment, the stopping of the first timer and maintaining the VarRLF-Report depend on the condition of stopping the first timer.

[0498] As an embodiment, the condition of maintaining the VarRLF-Report depending on the stopping of the first timer along with the stopping of the first timer means that the condition of stopping the first timer is receiving signaling other than RRC message.

[0499] As an embodiment, the condition of maintaining the VarRLF-Report depending on the stopping of the first timer along with the stopping of the first timer refers to: the condition of stopping the first timer is receiving LTM Cell switch MAC CE.

[0500] As an embodiment, the condition of maintaining the VarRLF-Report depending on the stopping of the first timer along with the stopping of the first timer refers to: the condition of stopping the first timer is receiving MCG LTM Cell switch MAC CE.

[0501] As an embodiment, maintaining the VarRLF-Report means not clearing the information included in the VarRLF-Report.

[0502] As an embodiment, maintaining the VarRLF-Report means that clearing the information included in the VarRLF-Report is not performed.

[0503] As an embodiment, maintaining the VarRLF-Report refers to maintaining part of the information in the VarRLF-Report.

[0504] As an embodiment, maintaining the VarRLF-Report refers to: setting relevant information in the VarRLF-Report.

[0505] As an embodiment, the first timer is T316; the determination that a link problem occurs in at least PCell refers to: when RLF is detected in MCG and MCGFailureInformation is initiated; as a response to the initiation of MCGFailureInformation, a MCGFailureInformation message is sent to SCG.

[0506] As an embodiment, as a response to sending a MCGFailureInformation message to the SCG, an RRC message is received; the RRC message instructs the MCG to perform a first RRC behavior; the first RRC behavior includes: RRC connection release, RRC reconfiguration, or RRC reconstruction; the first signaling is not received before receiving the RRC message.

[0507] As an embodiment, when the first timer is running, the first signaling is received before the one RRC message is received, and the first node no longer receives the one RRC message.

[0508] As an embodiment, when the first timer is running, the first signaling is received before the one RRC message is received, and the network ensures that the one RRC message is no longer sent through the SCG.

[0509] As an embodiment, when the first timer is running, the first signaling is received before the one RRC message is received, and the first node releases the SCG-related connection.

[0510] Example 7

[0511] Embodiment 7 illustrates a schematic diagram of maintaining the VarRLF-Report dependency on the first signaling according to an embodiment of the present application, as shown in FIG7 .

[0512] In embodiment 7, maintaining the VarRLF-Report depends on the first signaling.

[0513] As an embodiment, the maintaining of the VarRLF-Report dependency on the first signaling means that the maintaining of the VarRLF-Report dependency on the Reconfiguration with sync process is triggered by the first signaling.

[0514] As an embodiment, maintaining the VarRLF-Report in dependence on the first signaling means: if the Reconfiguration with sync process is triggered by the first signaling, maintaining the VarRLF-Report.

[0515] As an embodiment, maintaining the VarRLF-Report in dependence on the first signaling means: if the Reconfiguration with sync process is triggered by the first signaling, regardless of whether the UE performing the Reconfiguration with sync process supports RLF-Report for fast MCG recovery procedure, the VarRLF-Report is maintained.

[0516] As an embodiment, the Reconfiguration with sync process is for the first candidate cell.

[0517] As an embodiment, the Reconfiguration with sync process is triggered by the first signaling, which means that the first signaling indicates the application of the configuration information of the first candidate cell, and the application of the configuration information of the first candidate cell includes triggering the Reconfiguration with sync process.

[0518] As an embodiment, the Reconfiguration with sync process is triggered by the first signaling, which means that the first signaling triggers the application of the configuration information of the first candidate cell, and the application of the configuration information of the first candidate cell includes executing the Reconfiguration with sync process.

[0519] As an embodiment, the maintaining of the VarRLF-Report dependency on the first signaling means that the maintaining of the VarRLF-Report dependency on the configuration information of applying the first candidate cell is triggered by the first signaling.

[0520] As an embodiment, the maintaining of the VarRLF-Report in dependence on the first signaling means: if the application of the configuration information of the first candidate cell is triggered by the first signaling, maintaining the VarRLF-Report.

[0521] As an embodiment, the application of the configuration information of the first candidate cell is triggered by the first signaling, which means that the first signaling indicates the configuration index of the first candidate cell, and in response to the consistency between the configuration index and the configuration information index of the candidate cell stored in the first node, the configuration information of the first candidate cell is applied.

[0522] As an embodiment, the application of the configuration information of the first candidate cell is triggered by the first signaling, which means that the first signaling includes a field for activating the configuration information of the first candidate cell.

[0523] As an embodiment, maintaining the VarRLF-Report in dependence on the first signaling means: under the assumption that the Reconfiguration with sync process is triggered by a CHO condition, clearing the information included in the VarRLF-Report.

[0524] As an embodiment, maintaining the VarRLF-Report in dependence on the first signaling means: under the assumption that the Reconfiguration with sync process is triggered by RRC signaling, clearing the information included in the VarRLF-Report.

[0525] As an embodiment, maintaining the VarRLF-Report in dependence on the first signaling means: under the assumption that the Reconfiguration with sync process is triggered by the UE itself, clearing the information included in the VarRLF-Report.

[0526] As an embodiment, maintaining the VarRLF-Report dependence on the first signaling means: under the assumption that the Reconfiguration with sync process is not triggered by the first signaling, the UE performing the Reconfiguration with sync process does not support the RLF-Report for the fast MCG recovery procedure, and clears the information included in the VarRLF-Report.

[0527] As an embodiment, maintaining the VarRLF-Report dependent on the first signaling means: if an RRC signaling is received before receiving the first signaling, clearing the information included in the VarRLF-Report.

[0528] As an embodiment, maintaining the VarRLF-Report dependent on the first signaling means: if the first signaling is for SCG, clearing the information in the VarRLF-Report.

[0529] As an embodiment, maintaining the VarRLF-Report dependent on the first signaling means: as a response to receiving the first signaling, the MCG fast recovery procedure is considered to be completed, and the first timer is T316.

[0530] As an embodiment, maintaining the VarRLF-Report dependence on the first signaling means: the first timer is T316, the first signaling is received during the operation of the first timer, the configuration information of the first candidate cell is applied, and the UE in the Reconfiguration with sync process does not support RLF-Report for the fast MCG recovery procedure, and maintains the VarRLF-Report.

[0531] Example 8

[0532] Embodiment 8 illustrates a schematic diagram of maintaining the VarRLF-Report according to an embodiment of the present application including setting a first information block in the VarRLF-Report, as shown in FIG8 .

[0533] In embodiment 8, maintaining the VarRLF-Report includes setting a first information block in the VarRLF-Report, where the first information block indicates the first candidate cell.

[0534] As an embodiment, maintaining the VarRLF-Report includes setting a first information block in the VarRLF-Report to be applied depending on configuration information of the first candidate cell.

[0535] As an embodiment, when the configuration information of the first candidate cell is applied, maintaining the VarRLF-Report includes setting a first information block in the VarRLF-Report.

[0536] As an embodiment, when at least the configuration information of the first candidate cell is applied, maintaining the VarRLF-Report includes setting a first information block in the VarRLF-Report.

[0537] As an embodiment, as long as the configuration information of the first candidate cell is applied, maintaining the VarRLF-Report includes setting a first information block in the VarRLF-Report.

[0538] As an embodiment, if the configuration information of the first candidate cell is not applied after receiving the first signaling, the VarRLF-Report is not maintained.

[0539] As an embodiment, if the configuration information of the first candidate cell is not applied after receiving the first signaling, maintaining the VarRLF-Report does not include setting a first information block in the VarRLF-Report.

[0540] As an embodiment, the first information block is an ltmId field.

[0541] As an embodiment, the name of the first information block includes ltm.

[0542] As an embodiment, the name of the first information block includes CellId.

[0543] As an embodiment, the first information block is a ltmCellId field.

[0544] As an embodiment, the first information block is a ltmCandidateCellId field.

[0545] As an embodiment, the first information block is a ltmCandidateCell field.

[0546] As an embodiment, the first information block is a ltmCandidateCellList field.

[0547] As an embodiment, the first information block is for MCG fast recovery.

[0548] As an embodiment, the first information block indicates the index of the first candidate cell.

[0549] As an embodiment, the first information block indicates the cell identifier of the first candidate cell.

[0550] As an embodiment, the first information block indicating the cell identifier of the first candidate cell means that the first information block indicates the PCI of the first candidate cell.

[0551] As an embodiment, the first information block indicating the cell identifier of the first candidate cell means that the first information block indicates the PCI and carrier frequency of the first candidate cell.

[0552] As an embodiment, the first information block indicating the cell identifier of the first candidate cell means that the first information block indicates the CGI (global cell identity) of the first candidate cell.

[0553] As an embodiment, the first information block indicating the cell identifier of the first candidate cell means that the first information block indicates the CGI and PCI of the first candidate cell.

[0554] As an embodiment, the first information block indicating the cell identifier of the first candidate cell means that the first information block indicates the CGI, PCI and carrier frequency of the first candidate cell.

[0555] As an embodiment, the first information block indicating the cell identifier of the first candidate cell means that the first information block indicates the PLMN of the first candidate cell.

[0556] As an embodiment, the first information block indicating the cell identifier of the first candidate cell means that the first information block indicates the SNPN of the first candidate cell.

[0557] As an embodiment, the first information block indicates that configuration information of the first candidate cell is applied.

[0558] As an embodiment, the first information block is set to true to indicate that the configuration information of the first candidate cell is applied.

[0559] As an embodiment, the first information block indicates that the cell identifier of the first candidate cell indicates that configuration information of the first candidate cell is applied.

[0560] As an embodiment, the first timer is T316; the determination that a link problem occurs in at least PCell refers to: when RLF is detected in MCG and MCGFailureInformation is initiated; receiving a first signaling, the first signaling indicating the first candidate cell, maintaining the VarRLF-Report as a response to the first signaling being received; maintaining the VarRLF-Report includes setting a first information block in the VarRLF-Report, the first information block indicating the cell identifier of the first candidate cell. As an embodiment, the first timer is T316; the determination that a link problem occurs in at least PCell refers to: when RLF is detected in MCG and MCGFailureInformation is initiated; receiving a first signaling, the first signaling indicating the first candidate cell, maintaining the VarRLF-Report as a response to the configuration information of the first candidate cell being applied; maintaining the VarRLF-Report includes setting a first information block in the VarRLF-Report, the first information block indicating the cell identifier of the first candidate cell.

[0561] Example 9

[0562] Embodiment 9 illustrates a schematic diagram of maintaining the VarRLF-Report according to an embodiment of the present application including setting a second information block in the VarRLF-Report, as shown in FIG9 .

[0563] In embodiment 9, maintaining the VarRLF-Report includes setting a second information block in the VarRLF-Report, where the second information block indicates the first timer.

[0564] As an embodiment, the second information block is an elapsedTimeT316 field.

[0565] As an embodiment, the second information block is not the elapsedTimeT316 field.

[0566] As an embodiment, the name of the second information block includes T316.

[0567] As an embodiment, the name of the second information block includes Time.

[0568] As an embodiment, the second information block indicating the first timer means that the second information block indicates the time from the start of the first timer to the receipt of the first signaling.

[0569] As an embodiment, the start time of the second information block depends on the time when the first timer starts running, and the end time of the second information block depends on the first signaling.

[0570] As an embodiment, the time when the first timer starts running refers to: the time when the MCG quick recovery is started.

[0571] As an embodiment, the time when the first timer starts running refers to: the time when the MCGFailureInformation is started.

[0572] As an embodiment, the time when the first timer starts running refers to the time when the content of the MCGFailureInformation message is set.

[0573] As an embodiment, the time when the first timer starts running refers to the time when the MCGFailureInformation message is passed to a lower layer.

[0574] As an embodiment, the time when the first timer starts running refers to: the time when the MCGFailureInformation message is sent.

[0575] As an embodiment, the expiration time of the second information block depends on the first signaling, which means that the expiration time of the second information block is the stop time of the first timer, and the stop time of the first timer depends on the first signaling.

[0576] As an embodiment, the expiration time of the second information block depends on the first signaling, which means that the second information block expires when the first signaling is received.

[0577] As an embodiment, the expiration time of the second information block depends on the first signaling, which means that the second information block expires when at least the first signaling is received.

[0578] As an embodiment, the expiration time of the second information block depends on the first signaling, which means that the second information block expires after the first signaling is received.

[0579] As an embodiment, the expiration time of the second information block depends on the first signaling, which means that when the first signaling is transmitted to the sublayer above the MAC sublayer, the second information block expires.

[0580] As an embodiment, the expiration time of the second information block depends on the first signaling, which means that when the first signaling is transmitted to the RRC sublayer, the second information block expires.

[0581] As an embodiment, the expiration time of the second information block depends on the first signaling, which means that when the first signaling is transmitted to the RRC sublayer and it is determined to apply the first signaling indication information, the second information block expires.

[0582] As an embodiment, the expiration time of the second information block depends on the first signaling, which means that when the first signaling indication information is determined to be applied and completed, the second information block expires.

[0583] As an embodiment, the second information block indicating the first timer means that the second information block indicates whether the first timer has expired.

[0584] As an embodiment, the first timer not expiring depends on the second information block being set.

[0585] As an embodiment, when the second information block is set, the first timer has not expired.

[0586] As an embodiment, when at least the second information block is set, the first timer has not expired.

[0587] As an embodiment, the second information block indicating the first timer means that the second information block indicates that the first timer is stopped due to the first signaling being received.

[0588] As an embodiment, the second information block implicitly indicates that the first timer is stopped due to the first signaling being received.

[0589] As an embodiment, the second information block is configured to indicate that the first timer is stopped due to the first signaling being received.

[0590] As an embodiment, the second information block explicitly indicates that the first timer is stopped due to the first signaling being received.

[0591] As an embodiment, the second information block is set to a fixed value to indicate that the first timer is stopped due to the first signaling being received.

[0592] Example 10

[0593] Embodiment 10 illustrates a schematic diagram of setting the third information block in the VarSuccessHO-Report according to an embodiment of the present application, as shown in FIG10 .

[0594] In embodiment 10, as a response to the successful application of the configuration information of the first candidate cell, a third information block is set in VarSuccessHO-Report; wherein the third information block indicates the reason for setting the VarSuccessHO-Report.

[0595] As an embodiment, the configuration information of the first candidate cell is successfully applied, which means that the Reconfiguration with sync process is successfully applied.

[0596] As an embodiment, the configuration information of the first candidate cell is successfully applied, which means that the Reconfiguration with sync process is determined to be completed.

[0597] As an embodiment, the configuration information of the first candidate cell is successfully applied, which means that the Reconfiguration with sync process is determined to be completed and successHO-Config is configured in the configuration information of the first candidate cell.

[0598] As an embodiment, the configuration information of the first candidate cell is successfully applied, which means: successfully connected to the first candidate cell.

[0599] As an embodiment, the third information block indicates that the reason for setting the VarSuccessHO-Report depends on whether the successHO-Config in the first candidate cell is configured.

[0600] As an embodiment, the successHO-Config being configured means that the successHO-Config is set to setup.

[0601] As an embodiment, the successHO-Config being configured means that a specified threshold in the successHO-Config is set.

[0602] As an embodiment, the specified threshold refers to: thresholdPercentageT310-r19.

[0603] As an embodiment, the specified threshold refers to: thresholdPercentageT310-r20.

[0604] As an embodiment, the specified threshold refers to: thresholdPercentageT312-r19.

[0605] As an embodiment, the specified threshold refers to: thresholdPercentageT312-r20.

[0606] As an embodiment, the specified threshold refers to: thresholdPercentageT316-r19.

[0607] As an embodiment, the specified threshold refers to: thresholdPercentageT316-r20.

[0608] As an embodiment, the specified threshold refers to: thresholdPercentageT311-r19.

[0609] As an embodiment, the specified threshold refers to: thresholdPercentageT311-r20.

[0610] As an embodiment, the specified threshold refers to: mcgRecovery-SuccessfulReporting.

[0611] As an embodiment, the specified threshold refers to: Reestablishment-SuccessfulReporting.

[0612] As an embodiment, the name of the specified threshold includes: mcgRecovery.

[0613] As an embodiment, the names of the specified thresholds include: mcgRecovery and successful.

[0614] As an embodiment, the name of the specified threshold includes: Reestablishment.

[0615] As an embodiment, the name of the specified threshold includes: T310.

[0616] As an embodiment, the name of the specified threshold includes: T312.

[0617] As an embodiment, the name of the specified threshold includes: T316.

[0618] As an embodiment, the successHO-Config being configured means that the successHO-Config is set to setup and the running time of the first timer reaches a specified threshold.

[0619] As an embodiment, the reaching refers to not less than.

[0620] As an embodiment, the term "reach" refers to being greater than.

[0621] As an embodiment, the reaching refers to not greater than.

[0622] As an embodiment, the reaching refers to being less than.

[0623] As an embodiment, the third information block includes a candidate cause field, wherein one candidate cause field is set to true, indicating a reason for setting the VarSuccessHO-Report, and the setting of the candidate cause field depends on the first signaling being received.

[0624] As an embodiment, the one candidate cause field is set to depend on the first signaling being received, which means that when the first signaling is received, the one candidate cause field is set.

[0625] As an embodiment, the one candidate cause field is set to depend on the first signaling being received, which means that when at least the first signaling is received, the one candidate cause field is set.

[0626] As an embodiment, the one candidate cause field is set to depend on the first signaling being received, which means that when the first signaling is received and the first timer is stopped due to the first signaling being received, the one candidate cause field is set.

[0627] As an embodiment, the one candidate cause field is set to depend on the first signaling being received, which means that when at least the first signaling is received and the first timer is stopped due to the first signaling being received, the one candidate cause field is set.

[0628] As an embodiment, the one candidate cause field is set to depend on the first signaling being received, which means that when the first signaling is received and the first timer is stopped due to the first signaling being received and the configuration information of the first candidate cell is successfully applied, the one candidate cause field is set.

[0629] As an embodiment, the one candidate cause field is set to depend on the first signaling being received, which means that: when at least the first signaling is received and the first timer is stopped due to the first signaling being received and the configuration information of the first candidate cell is successfully applied, the one candidate cause field is set.

[0630] As an embodiment, the first timer is T310, and the determination of a link problem occurring in at least PCell refers to: when N310 consecutive out-of-sync indications are detected on the at least PCell; first signaling is received during the operation of the first timer, and the first signaling indicates a first candidate cell; as a response to the successful application of the first candidate cell, a third information block is set in the VarSuccessHO-Report.

[0631] As an embodiment, the first timer is T312, and the determination of a link problem occurring in at least PCell refers to: when T310 of at least PCell is running and a MeasurementReport is sent; receiving first signaling during the operation of the first timer, the first signaling indicating a first candidate cell; and setting a third information block in the VarSuccessHO-Report as a response to the successful application of the first candidate cell.

[0632] As an embodiment, the first timer is T316, and a first signaling is received during the operation of the first timer, wherein the first signaling indicates a first candidate cell; as a response to the successful application of the first candidate cell, a third information block is set in the VarSuccessHO-Report.

[0633] As an embodiment, the first timer is T316, and the first timer is stopped due to the reception of the first signaling, which means that after the first signaling is received, T316 is stopped and the MCG fast Recovery process is completed.

[0634] As an embodiment, the first timer is T316, and the first timer is stopped due to the reception of the first signaling, which means that after the first signaling is received, T316 is stopped and the MCG fast Recovery process is successfully completed.

[0635] As an embodiment, the first timer is T311, and a first signaling is received during the operation of the first timer, the first signaling indicating a first candidate cell; as a response to the successful application of the first candidate cell, a third information block is set in the VarSuccessHO-Report.

[0636] As an embodiment, the first timer is T311, and the first timer is stopped due to the reception of the first signaling, which means that after the first signaling is received, T311 is stopped and the RRC Reestablishment process is completed.

[0637] As an embodiment, the first timer is T311, and the first timer is stopped due to the reception of the first signaling, which means that after the first signaling is received, T311 is stopped and the RRC Reestablishment process is successfully completed.

[0638] Example 11

[0639] Embodiment 11 illustrates a wireless signal transmission flow chart according to another embodiment of the present application, as shown in FIG11 .

[0640] It should be noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0641] For the first node U01, in step S11101, a second RRC message is received; the second RRC message includes a first request indication; in step S11102, a third RRC message is sent as a response to the receipt of the second RRC message.

[0642] For the third node N03, in step S11301, a second RRC message is sent; in step S11302, a third RRC message is received.

[0643] In embodiment 11, the third RRC message includes information stored in at least one of the VarRLF-Report or the VarSuccessHO-Report, and the content of the third RRC message depends on the first request indication.

[0644] As an embodiment, the first node U01 and the third node N03 are connected wirelessly.

[0645] As an embodiment, the first node U01 and the third node N03 are connected via a wired connection.

[0646] As an embodiment, the first node U01 and the third node N03 are connected via a Uu port.

[0647] As an embodiment, the first node U01 and the third node N03 are connected via an IAB port.

[0648] As an embodiment, the first node U01 and the third node N03 are connected via a PC5 interface.

[0649] As an embodiment, the third node N03 is a cell served by the first node U01.

[0650] As an embodiment, the third node N03 is a maintaining base station of the first candidate cell.

[0651] As an embodiment, the third node N03 is a maintaining base station of a subsequent candidate cell of the first candidate cell.

[0652] As an embodiment, the third node N03 is a candidate MN.

[0653] As an embodiment, the third node N03 is the same as the second node N02.

[0654] As an embodiment, the third node N03 and the second node N02 are different.

[0655] As an embodiment, the first node U01 receives a second RRC message.

[0656] As a sub-embodiment of the above embodiment, the second RRC message is sent on the first candidate cell.

[0657] As a sub-embodiment of the above embodiment, the second RRC message is sent on a subsequent candidate cell configured for the first candidate cell.

[0658] As a sub-embodiment of the above embodiment, the second RRC message includes a UEInformationRequest message.

[0659] As a sub-embodiment of the above embodiment, the second RRC message is a UEInformationRequest message.

[0660] As a sub-embodiment of the above embodiment, the sender of the second RRC message is the same as the sender of the first RRC message.

[0661] As a sub-embodiment of the above embodiment, the sender of the second RRC message is different from the sender of the first RRC message.

[0662] As a sub-embodiment of the above embodiment, the sender of the second RRC message is related to the sender of the first RRC message.

[0663] As a sub-embodiment of the above embodiment, the sender of the second RRC message is related to the sender of the first RRC message.

[0664] As a sub-embodiment of the above embodiment, the sender of the second RRC message is a candidate cell of the sender of the first RRC message.

[0665] As a sub-embodiment of the above embodiment, the sender of the second RRC message is a subsequent candidate cell of the sender of the first RRC message.

[0666] As a sub-embodiment of the above embodiment, the second RRC message includes a first request indication for indicating the sending of the third RRC message.

[0667] As a subsidiary embodiment of the above sub-embodiment, when the second RRC message includes the first request indication, the first node U01 sends the third RRC message.

[0668] As a subsidiary embodiment of the above sub-embodiment, when at least the second RRC message includes the first request indication, the first node U01 sends the third RRC message.

[0669] As a subsidiary embodiment of the above sub-embodiment, the second RRC message includes the first request indication and the first request indication instructs to send the third RRC message, and the first node U01 sends the third RRC message.

[0670] As a sub-embodiment of the above embodiment, the first request indication includes RLF-ReportReq-r16.

[0671] As a sub-embodiment of the above embodiment, the first request indication includes successHO-ReportReq-r17.

[0672] As a sub-embodiment of the above embodiment, the name of the first request indication includes ltm.

[0673] As a sub-embodiment of the above embodiment, the name of the first request indication includes ReportReq.

[0674] As a sub-embodiment of the above embodiment, the first request indication is RLF-ReportReq-r16.

[0675] As a sub-embodiment of the above embodiment, the first request indication is successHO-ReportReq-r17.

[0676] As an embodiment, the first node U01 sends the third RRC message.

[0677] As an embodiment, the sending of the third RRC message is coupled with the receiving of the second RRC message.

[0678] As an embodiment, the sending of the third RRC message and the receiving of the second RRC message are decoupled.

[0679] As a sub-embodiment of the above embodiment, the second RRC message includes a UEInformationRequest message, and the third RRC message includes a UEInformationResponse message.

[0680] As a sub-embodiment of the above embodiment, the second RRC message is a UEInformationRequest message, and the third RRC message is a UEInformationResponse message.

[0681] As a sub-embodiment of the above embodiment, the second RRC message is not a UEInformationRequest message, and the third RRC message is a UEInformationResponse message.

[0682] As a sub-embodiment of the above embodiment, the third RRC message includes a UEInformationResponse message.

[0683] As a sub-embodiment of the above embodiment, the third RRC message is a UEInformationResponse message.

[0684] As a sub-embodiment of the above embodiment, the third RRC message includes information stored in at least one of the VarRLF-Report or the VarSuccessHO-Report, which means that the third RRC message only includes information stored in the VarRLF-Report.

[0685] As a sub-embodiment of the above embodiment, the third RRC message includes information stored in at least one of the VarRLF-Report or the VarSuccessHO-Report, which means that the third RRC message only includes information stored in the VarSuccessHO-Report.

[0686] As a sub-embodiment of the above embodiment, the third RRC message includes the information stored in at least one of the VarRLF-Report or the VarSuccessHO-Report, which means that the third RRC message includes the information stored in the VarSuccessHO-Report and the VarSuccessHO-Report.

[0687] As a sub-embodiment of the above embodiment, the content in the third RRC message depends on the first request indication, which means that the first request indication indicates that the third RRC message includes a Report type.

[0688] As a sub-embodiment of the above embodiment, the content in the third RRC message depends on the first request indication, which means that the first request indication indicates setting the content of the first request indication in the third RRC message.

[0689] As a sub-embodiment of the above embodiment, the content in the third RRC message depends on the first request indication, which means that the third RRC message is set as a response to the receipt of the first request indication.

[0690] As a sub-embodiment of the above embodiment, the content in the third RRC message depends on the first request indication, which means that: the first request indication is set to true, and the content indicated by the first request indication is included in the third RRC message.

[0691] As a sub-embodiment of the above embodiment, the content in the third RRC message depends on the first request indication, which means that: the first request indication is RLF-ReportReq-r16, and the third RRC message includes all information stored in VarRLF-Report.

[0692] As a sub-embodiment of the above embodiment, the content in the third RRC message depends on the first request indication, which means that: the first request indication is RLF-ReportReq-r16, and the third RRC message includes part of the information stored in VarRLF-Report.

[0693] As a sub-embodiment of the above embodiment, the content in the third RRC message depends on the first request indication, which means that: the first request indication is successHO-ReportReq-r17, and the third RRC message includes all information stored in VarSuccessHO-Report.

[0694] As a sub-embodiment of the above embodiment, the content in the third RRC message depends on the first request indication, which means that: the first request indication is successHO-ReportReq-r17, and the third RRC message includes part of the information stored in VarSuccessHO-Report.

[0695] Example 12

[0696] Example 12 illustrates a schematic diagram of executing a first action after the first timer expires according to an embodiment of the present application, as shown in Figure 12.

[0697] In Example 12, in response to the expiration of the first timer, a first process is started and a first action is performed; wherein the first timer is T310 or T312.

[0698] As an embodiment, when the first timer expires, the first process is started.

[0699] As an embodiment, the first process is started when at least the first timer expires.

[0700] As an embodiment, once the first timer expires, the first process is started.

[0701] As an embodiment, when the first timer expires, the first process is started and the first action is performed.

[0702] As an embodiment, when at least the first timer expires, the first process is started and the first action is performed.

[0703] As an embodiment, once the first timer expires, the first process is started and the first action is performed.

[0704] As an embodiment, the first process is the MCGFailureInformation process.

[0705] As an embodiment, the first process is the SCGFailureInformation process.

[0706] As an embodiment, the first process is a FailureInformation process.

[0707] As an embodiment, the first process is an RRC re-establishment process.

[0708] As an embodiment, the first process is an RLF content determination process.

[0709] As an embodiment, the first process is to store RLF information.

[0710] As an embodiment, the first process is to enter the RRC IDLE state.

[0711] As an embodiment, the first process includes the MCGFailureInformation process.

[0712] As an embodiment, the first process includes the SCGFailureInformation process.

[0713] As an embodiment, the first process includes a FailureInformation process.

[0714] As an embodiment, the first process includes an RRC re-establishment process.

[0715] As an embodiment, the first process includes an RLF content determination process.

[0716] As an embodiment, the first process includes storing RLF information.

[0717] As an embodiment, the first process includes entering the RRC IDLE state.

[0718] As an embodiment, executing the first action depends on starting the first process.

[0719] As an embodiment, starting the first process triggers execution of the first action.

[0720] As an embodiment, starting the first process includes performing the first action.

[0721] As an embodiment, the first action is performed after starting the first process.

[0722] As an embodiment, after the first process is started, the first action is performed.

[0723] As an embodiment, the first action is performed after at least the first process is started.

[0724] As an embodiment, once the first process is started, the first action is performed.

[0725] As an embodiment, the first action is to stop the evaluation of the condition configuration.

[0726] As a sub-embodiment of the above embodiment, the evaluation of the stop condition configuration includes: measuring the stop condition configuration.

[0727] As a sub-embodiment of the above embodiment, the conditional configuration includes: conditional configuration information of CHO.

[0728] As a sub-embodiment of the above embodiment, the condition configuration includes: condition configuration information of CHO with candidate SCGs.

[0729] As a sub-embodiment of the above embodiment, the conditional configuration includes: conditional configuration information of CPAC.

[0730] As a sub-embodiment of the above embodiment, the conditional configuration includes: conditional configuration information of subsequent CPAC.

[0731] As an embodiment, the performing of the first action is to stop transmission of all protocol layers.

[0732] As an embodiment, the performing of the first action is to stop transmission at the physical layer.

[0733] As an embodiment, the performing of the first action is to stop transmission of PDSCH.

[0734] As an embodiment, the performing of the first action is stopping the transmission of the PDCCH.

[0735] As an embodiment, the performing of the first action is stopping transmission of the PDSCH and stopping transmission of the PDCCH.

[0736] As an embodiment, the performing of the first action is to stop the transmission of the PDSCH but not to stop the transmission of the PDCCH.

[0737] As an embodiment, the stopping of transmission includes: stopping reception of signaling.

[0738] As an embodiment, stopping transmission includes: stopping sending signaling.

[0739] As an embodiment, the stopping of transmission includes: stopping monitoring of signaling.

[0740] As an embodiment, the stopping of transmission includes: releasing relevant resource configuration.

[0741] As an embodiment, the first action is to not receive the PDCCH order.

[0742] As an embodiment, the first action is to not receive MAC CE.

[0743] As an embodiment, the first action is to suspend the relevant RB.

[0744] As an embodiment, the first action is performed for the cell currently being served.

[0745] As an embodiment, the first action is performed for the MCG currently being served.

[0746] As an embodiment, the first action is performed for the currently serving SCG.

[0747] As an embodiment, the first action is performed for the target cell.

[0748] As an embodiment, the first action is performed for the target MCG.

[0749] As an embodiment, the first action is performed for the target SCG.

[0750] As an embodiment, the first timer is T310.

[0751] As an embodiment, the first timer is T312.

[0752] As an embodiment, in response to the expiration of T310, the MCGFailureInformation process is started and the first action is performed.

[0753] As an embodiment, in response to the expiration of T310, the MCGFailureInformation process is started and the MAC CE of the MCG is no longer received.

[0754] As an embodiment, in response to the expiration of T310, the RRC connection re-rstablishment process is started and the first action is performed.

[0755] As an embodiment, in response to the expiration of T310, the RRC connection re-rstablishment process is started, and the MAC CE of the relevant cell group is no longer received.

[0756] As an embodiment, in response to the expiration of T312, the MCGFailureInformation process is started and the first action is performed.

[0757] As an embodiment, in response to the expiration of T312, the MCGFailureInformation process is started and the MAC CE of the MCG is no longer received.

[0758] As an embodiment, in response to the expiration of T312, the RRC connection re-rstablishment process is started and the first action is performed.

[0759] As an embodiment, in response to the expiration of T312, the RRC connection re-rstablishment process is started, and the MAC CE of the relevant cell group is no longer received.

[0760] Example 13

[0761] Embodiment 13 illustrates a structural block diagram of a processing device in a first node according to an embodiment of the present application, as shown in FIG13. In FIG13, the processing device 1300 in the first node includes a first processor 1301, a first receiver 1302, and a first transmitter 1303.

[0762] The first processor 1301 receives a first RRC message including configuration information of a first candidate cell; determines that a link problem occurs in at least the PCell; starts a first timer in response to determining that the link problem occurs in at least the PCell; receives a first signaling; applies the configuration information of the first candidate cell in response to receiving the first signaling; and stops the first timer.

[0763] In embodiment 13, the first signaling is signaling below the RRC sublayer, and the first signaling indicates the first candidate cell; when the first signaling is received, the first timer is running; and stopping the first timer depends on the first signaling being received.

[0764] As an embodiment, the first processor 1201 sets a VarRLF-Report in response to determining that a link problem occurs in at least the PCell; and maintains the VarRLF-Report along with stopping the first timer;

[0765] As an embodiment, the first timer is T316; the determination that a link problem occurs in at least the PCell is accompanied by the determination that a link problem occurs in the PCell refers to: when the MCG is detected to have an RLF and MCGFailureInformation is initiated.

[0766] As an embodiment, maintaining the VarRLF-Report depends on the first signaling.

[0767] As an embodiment, maintaining the VarRLF-Report includes setting a first information block in the VarRLF-Report, where the first information block indicates the first candidate cell.

[0768] As an embodiment, maintaining the VarRLF-Report includes setting a second information block in the VarRLF-Report, where the second information block indicates the first timer.

[0769] As an embodiment, the first processor 1301 sets a third information block in VarSuccessHO-Report as a response to the successful application of the configuration information of the first candidate cell;

[0770] As an embodiment, the third information block indicates the reason for setting the VarSuccessHO-Report.

[0771] As an embodiment, in response to the expiration of the first timer, a first process is started and a first action is performed; wherein the first timer is T310 or T312.

[0772] As an embodiment, the first receiver 1302 receives a second RRC message, and the second RRC message includes a first request indication.

[0773] As an embodiment, the first transmitter 1303 sends a third RRC message in response to the second RRC message being received;

[0774] As an embodiment, the third RRC message includes information stored in at least one of the VarRLF-Report or the VarSuccessHO-Report, and the content in the third RRC message depends on the first request indication.

[0775] As an embodiment, the first processor 1301 includes a first receiver 1302 .

[0776] As an embodiment, the first processor 1301 includes a first transmitter 1303 .

[0777] As an embodiment, the first processor 1301 includes a first receiver 1302 and a first transmitter 1303 .

[0778] As an embodiment, the first receiver 1302 includes at least one of the antenna 452 or the receiver 454 or the multi-antenna receiving processor 458 or the receiving processor 456 or the controller / processor 459 or the memory 460 or the data source 467 in FIG. 4 of the present application.

[0779] As an embodiment, the first receiver 1302 includes at least the antenna 452 and the receiver 454 in FIG. 4 of the present application.

[0780] As an embodiment, the first transmitter 1303 includes at least one of the antenna 452 or transmitter 454 or multi-antenna transmission processor 457 or transmission processor 468 or controller / processor 459 or memory 460 or data source 467 in FIG. 4 of the present application.

[0781] As an embodiment, the first transmitter 1303 includes at least the antenna 452 and the transmitter 454 in FIG. 4 of the present application.

[0782] As an embodiment, the first information block in the VarRLF-Report is set by the first receiver.

[0783] As an embodiment, the first information block in the VarRLF-Report is set by the first transmitter.

[0784] As an embodiment, the first information block in the VarRLF-Report is set by the memory 460 in the first receiver.

[0785] As an embodiment, the first information block in the VarRLF-Report is set by the memory 460 in the first transmitter.

[0786] As an embodiment, the first information block in the VarRLF-Report is set by the controller / processor 459 in the first receiver.

[0787] As an embodiment, the first information block in the VarRLF-Report is set by the controller / processor 459 in the first transmitter.

[0788] As an embodiment, the second information block in the VarRLF-Report is set by the first receiver.

[0789] As an embodiment, the second information block in the VarRLF-Report is set by the first transmitter.

[0790] As an embodiment, the second information block in the VarRLF-Report is set by the memory 460 in the first receiver.

[0791] As an embodiment, the second information block in the VarRLF-Report is set by the memory 460 in the first transmitter.

[0792] As an embodiment, the second information block in the VarRLF-Report is set by the controller / processor 459 in the first receiver.

[0793] As an embodiment, the second information block in the VarRLF-Report is set by the controller / processor 459 in the first transmitter.

[0794] As an embodiment, the third information block in the VarSuccessHO-Report is set by the first receiver.

[0795] As an embodiment, the third information block in the VarSuccessHO-Report is set by the first transmitter.

[0796] As an embodiment, the third information block in the VarSuccessHO-Report is set by the memory 460 in the first receiver.

[0797] As an embodiment, the third information block in the VarSuccessHO-Report is set by the memory 460 in the first transmitter.

[0798] As an embodiment, the third information block in the VarSuccessHO-Report is set by the controller / processor 459 in the first receiver.

[0799] As an embodiment, the third information block in the VarSuccessHO-Report is set by the controller / processor 459 in the first transmitter.

[0800] Example 14

[0801] Embodiment 14 illustrates a structural block diagram of a processing device in a second node according to an embodiment of the present application, as shown in FIG14. In FIG14, the processing device 1400 in the second node includes a second transmitter 1401 and a second transmitter 1402.

[0802] The second transmitter 1401 sends a first RRC message, where the first RRC message includes configuration information of a first candidate cell; and sends a first signaling, where the first signaling is signaling under the RRC sublayer and indicates the first candidate cell.

[0803] In embodiment 14, the receiver of the first RRC message determines that a link problem occurs in at least PCell; accompanying the determination that a link problem occurs in at least PCell, a first timer is started; in response to the first signaling being received, the receiver of the first RRC message applies the configuration information of the first candidate cell; when the first signaling is received, the first timer is running; stopping the first timer depends on the reception of the first signaling.

[0804] As an embodiment, in response to the determination that a link problem occurs in at least PCell, the receiver of the first RRC message sets VarRLF-Report; accompanying the stopping of the first timer, the receiver of the first RRC message maintains the VarRLF-Report; wherein, the first timer is T316; accompanying the determination that a link problem occurs in at least PCell refers to: when MCG is detected to have an RLF and MCGFailureInformation is initiated.

[0805] As an embodiment, maintaining the VarRLF-Report depends on the first signaling.

[0806] As an embodiment, maintaining the VarRLF-Report includes setting a first information block in the VarRLF-Report, where the first information block indicates the first candidate cell.

[0807] As an embodiment, maintaining the VarRLF-Report includes setting a second information block in the VarRLF-Report, where the second information block indicates the first timer.

[0808] As an embodiment, as a response to the successful application of the configuration information of the first candidate cell, the receiver of the first RRC message sets a third information block in VarSuccessHO-Report; wherein the third information block indicates the reason for setting the VarSuccessHO-Report.

[0809] As an embodiment, the first information includes a second field, and the second field indicates the identifier of the second candidate cell; wherein the second condition is met.

[0810] As an embodiment, in response to the expiration of the first timer, the recipient of the first RRC message starts a first process and performs a first action; wherein the first timer is T310 or T312.

[0811] As an embodiment, the second transmitter 1401 transmits a second RRC message, where the second RRC message includes the first request indication;

[0812] As an embodiment, the second receiver 1402 receives a third RRC message as a response to the second RRC message being successfully sent;

[0813] As an embodiment, the third RRC message includes information stored in at least one of the VarRLF-Report or the VarSuccessHO-Report, and the content of the third RRC message depends on the first request indication. As an embodiment, the second processor 1301 includes a second receiver.

[0814] As an embodiment, the second transmitter 1401 includes at least one of the antenna 420 or the transmitter 418 or the multi-antenna transmission processor 471 or the transmission processor 416 or the controller / processor 475 or the memory 476 in FIG. 4 of the present application.

[0815] As an embodiment, the second transmitter 1401 includes at least the antenna 420 and the transmitter 418 in FIG. 4 of the present application.

[0816] As an embodiment, the second receiver 1402 includes at least one of the antenna 420 or the receiver 418 or the multi-antenna receiving processor 472 or the receiving processor 470 or the controller / processor 475 or the memory 476 in FIG. 4 of the present application.

[0817] As an embodiment, the second receiver 1402 includes at least the antenna 420 and the receiver 418 in FIG. 4 of the present application.

[0818] 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.

[0819] 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 processor receives a first RRC message, where the first RRC message includes configuration information of a first candidate cell; Determine if at least one PCell has a link problem. In response to determining that at least the PCell has a link problem, starting a first timer; receiving a first signaling; applying the configuration information of the first candidate cell in response to receiving the first signaling; and stopping the first timer; The first signaling is signaling under the RRC sublayer, and the first signaling indicates the first candidate cell; when the first signaling is received, the first timer is running; and stopping the first timer depends on the first signaling being received.

2. The first node according to claim 1, characterized in that include: The first processor sets a VarRLF-Report in response to determining that a link problem occurs in at least the PCell; Along with stopping the first timer, maintaining the VarRLF-Report; The first timer is T316; and the determination that a link problem occurs in at least the PCell is accompanied by the determination that a link problem occurs in the PCell refers to: when the MCG is detected to have an RLF and MCGFailureInformation is initiated.

3. The first node according to claim 2, characterized in that Maintaining the VarRLF-Report depends on the first signaling.

4. The first node according to claim 2 or 3, characterized in that The maintaining the VarRLF-Report includes setting a first information block in the VarRLF-Report, where the first information block indicates the first candidate cell.

5. The first node according to any one of claims 2 to 4, characterized in that: The maintaining the VarRLF-Report includes setting a second information block in the VarRLF-Report, where the second information block indicates the first timer.

6. The first node according to any one of claims 1 to 5, characterized in that: include: The first processor sets a third information block in a VarSuccessHO-Report as a response to the configuration information of the first candidate cell being successfully applied; The third information block indicates the reason for setting the VarSuccessHO-Report.

7. The first node according to any one of claims 1 to 6, characterized in that: include: A first receiver receives a second RRC message, where the second RRC message includes a first request indication; The first transmitter sends a third RRC message in response to receipt of the second RRC message; The third RRC message includes information stored in at least one of the VarRLF-Report or the VarSuccessHO-Report, and the content of the third RRC message depends on the first request indication.

8. The first node according to claim 1, characterized in that In response to the expiration of the first timer, a first process is started and a first action is performed; wherein the first timer is T310 or T312.

9. A second node used for wireless communication, characterized in that: include: A second transmitter sends a first RRC message, where the first RRC message includes configuration information of the first candidate cell; Sending first signaling, where the first signaling is signaling under the RRC sublayer, and the first signaling indicates the first candidate cell; In which, the receiver of the first RRC message determines that a link problem occurs in at least PCell; accompanying the determination that a link problem occurs in at least PCell, a first timer is started; as a response to the reception of the first signaling, the receiver of the first RRC message applies the configuration information of the first candidate cell; when the first signaling is received, the first timer is running; stopping the first timer depends on the reception of the first signaling.

10. A method in a first node for wireless communication, characterized in that: include: receiving a first RRC message, where the first RRC message includes configuration information of a first candidate cell; Determine if at least one PCell has a link problem. In response to determining that at least the PCell has a link problem, starting a first timer; receiving a first signaling; applying the configuration information of the first candidate cell in response to receiving the first signaling; and stopping the first timer; The first signaling is signaling under the RRC sublayer, and the first signaling indicates the first candidate cell; when the first signaling is received, the first timer is running; and stopping the first timer depends on the first signaling being received.

11. A method in a second node for wireless communication, characterized in that: include: Sending a first RRC message, where the first RRC message includes configuration information of the first candidate cell; Sending first signaling, where the first signaling is signaling under the RRC sublayer, and the first signaling indicates the first candidate cell; In which, the receiver of the first RRC message determines that a link problem occurs in at least PCell; accompanying the determination that a link problem occurs in at least PCell, a first timer is started; as a response to the reception of the first signaling, the receiver of the first RRC message applies the configuration information of the first candidate cell; when the first signaling is received, the first timer is running; stopping the first timer depends on the reception of the first signaling.

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