CN116405959A

CN116405959A - Method and apparatus in a communication node for wireless communication

Info

Publication number: CN116405959A
Application number: CN202310349827.2A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2023-07-07
Also published as: CN116233894A; CN113453244B; CN113453244A

Abstract

A method and apparatus in a communication node for wireless communication is disclosed. The communication node receives first signaling indicating a first set of candidate cells; determining a wireless connection failure; selecting a first target cell in response to the determination of the radio connection failure; when the first target cell does not belong to the first candidate cell set, sending second signaling, wherein the second signaling comprises a first message; transmitting third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; one of the second signaling and the third signaling is transmitted; the first message is used to determine whether the radio link failure related message is present. The proposal of the method does not report the related information of the radio link failure after the recovery of the radio link failure, can avoid unnecessary information reporting, reduces signaling overhead and is beneficial to network optimization.

Description

Method and apparatus in a communication node for wireless communication

This application is a divisional application of the following original applications:

Filing date of the original application: 2020, 03 and 26 days

Number of the original application: 202010223482.2

-the name of the invention of the original application: method and apparatus in a communication node for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission method and apparatus for a radio link failure report.

Background

The UE's radio link failure (Radio Link Failure, RLF) report may be used for coverage optimization and mobility robustness optimization, the UE storing the latest RLF or information related to handover failure and indicating RLF report availability at each subsequent RRC (RadioResource Control ) connection re-establishment and handover cell until the network acquires the RLF report or 48 hours after RLF or detects a handover failure. Self-organizing networks (Self-Organising Networks, SON) include network Self-configuration and Self-optimization, 3GPP (the 3rd Generation Partnership Project, third generation partnership project) has passed the data collection enhancement "work item (work item, WI) of" NR (new radio, new air interface) SON/MDT (Minimization of Drive Tests, minimization drive test) at ran#86, supporting the data collection characteristics of SON, including mobility enhancement optimization, successful handover report, UE (user equipment) history information in EN-DC (E-UTRA NR Dual Connectivity); data collection features supporting MDT include 2-stepRACH (random access channel) optimization, RLF reporting, etc. Release 16 investigated the standardization work of conditional handover (ConditionalHandover, CHO) in the "NR and LTE (Long Term Evolution ) mobility enhancement" work item, supporting radio link Recovery (Recovery) by CHO after RLF of the UE. Release 16 studied MCG (Master cell group) fast recovery (FastMCGRECover) in the "Dual connectivity and Carrier aggregation enhancement (ehancedDual Connectivity and Carrier Aggregation, eDCCA)" work project, supporting MCGRLF followed by MCG radio link recovery via SCG (Secondary cell group).

Disclosure of Invention

Before Release 16, when RLF occurs in the UE, the UE remains in RRC CONNECTED state (rrc_connected), selects one cell and performs RRC connection Reestablishment (Reestablishment), and if no suitable cell is selected, enters RRC IDLE state (rrc_idle). Release 16 introduces CHO and supports recovery of radio links by CHO, performs CHO procedures when the UE selected cell is a CHO candidate cell, otherwise performs RRC connection reestablishment. When the UE selects one CHO candidate cell and performs CHO procedures, the radio connection failure is recovered by performing RRC connection reconfiguration without performing RRC connection re-establishment. Because the UE has stored the radio link failure related message, the RRC connection complete acknowledgement message carries an indication that the UE has the radio link failure related message, so that when the base station schedules UE information, the UE will report the RLF of this time. Since the radio link failure has been recovered, the UE reporting the currently stored RLF information has an impact on network optimization and mobility enhancement, requiring enhancement of the radio link failure report.

In view of the above problems, the present application provides a solution. In the description of the problems, the recovery of a scene by CHO after RLF is adopted as an example; the method and the device are also applicable to a scene which is quickly recovered through MCG after MCG failure, and achieve the technical effect similar to that in a scene recovered through CHO after RLF. Furthermore, the adoption of a unified solution for different scenarios also helps to reduce hardware complexity and cost.

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

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

receiving first signaling, wherein the first signaling indicates a first candidate cell set; determining a wireless connection failure; selecting a first target cell in response to the determination of the radio connection failure;

when the first target cell does not belong to the first candidate cell set, sending second signaling, wherein the second signaling comprises a first message; transmitting third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; one of the second signaling and the third signaling is transmitted;

wherein the first message is used to determine whether the radio link failure related message is present.

As one embodiment, the problems to be solved by the present application include: in the traditional scheme, even if the UE executes radio link recovery after RLF, the UE still reports the RLF information, thereby influencing the network optimization strategy.

As one embodiment, the problems to be solved by the present application include: when the UE goes through RLF and recovers, the base station UE side is still notified of RLF information through the RRC connection reconfiguration complete message.

As one embodiment, the problems to be solved by the present application include: when the MCG generates RLF and performs MCG fast recovery through the SCG, the UE stores RLF information and notifies the base station UE of the RLF information in an RRC connection reconfiguration complete message.

As one embodiment, the problems to be solved by the present application include: when a Radio Link Failure (RLF) occurs in the serving cell and recovery is performed by a Conditional Handover (CHO), the UE stores the RLF information and notifies the base station UE of the RLF information in an RRC connection reconfiguration complete message.

As one embodiment, the problems to be solved by the present application include: when RLF occurs and recovers, there is no significant impact on network coverage optimization and mobility enhancement, and the UE stores and generates RLF reports increasing signaling overhead.

As one embodiment, the problems to be solved by the present application include: RLF occurs and the recovered RLF report increases the complexity of network optimization.

As one embodiment, the features of the above method include: after RLF occurred and recovered, no statistics were performed as RLF.

As one embodiment, the features of the above method include: after RLF, selecting a CHO cell for link recovery, and then, RLF reporting is not needed.

As one embodiment, the features of the above method include: after MCG RLF is quickly recovered through SCG, RLF reporting is not needed.

As one embodiment, the features of the above method include: and selecting a cell after RLF, if the selected cell is a CHO cell, performing CHO recovery without performing RRC connection reestablishment procedure.

As one embodiment, the features of the above method include: and selecting a cell after RLF, and if the selected cell belongs to the MCG, performing MCG fast recovery without performing RRC connection reestablishment.

As one example, the benefits of the above method include: and reducing RLF information storage at the UE side.

As one example, the benefits of the above method include: unnecessary RLF reporting is reduced.

As one example, the benefits of the above method include: and network coverage strategy optimization is facilitated.

As one example, the benefits of the above method include: and mobility robustness optimization is facilitated.

As one example, the benefits of the above method include: the signaling overhead is reduced.

As one example, the benefits of the above method include: and the network optimization complexity is reduced.

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

receiving a second message;

transmitting a third set of information;

wherein the second message is used to trigger transmission of the third set of information, the third set of information comprising a first sub-information block comprising the radio link failure related message; the first target cell does not belong to the first set of candidate cells.

As one embodiment, the features of the above method include: when the first target cell belongs to the first candidate cell set, the third information set does not include the radio link failure related message.

As one embodiment, the features of the above method include: when RLF is recovered, the third information set does not include the RLF report of this time.

transmitting a fourth signaling;

Receiving fifth signaling;

wherein the fifth signaling is used to trigger the second signaling.

According to an aspect of the application, the radio link failure related message is generated as a response to the determination of radio link failure.

As one embodiment, the features of the above method include: after RLF the UE stores the radio link failure related message.

According to an aspect of the application, the radio link failure related message is cleared; wherein the first target cell is one candidate cell in the first set of candidate cells.

As one embodiment, the features of the above method include: and when one CHO candidate cell is selected, clearing the radio link failure related message.

As one embodiment, the features of the above method include: and when the MCG cell is selected, clearing the radio link failure related message.

As one embodiment, the features of the above method include: and clearing the radio link failure related message before the RRC connection reconfiguration complete message is sent.

As one embodiment, the features of the above method include: and clearing the radio link failure related message after the RRC connection reconfiguration completion message is sent.

As one embodiment, the features of the above method include: and after the RLF recovery is completed, the radio link failure related message is cleared.

As one embodiment, the features of the above method include: after RLF recovery, when the base station schedules a UE information request, the UE side has cleared the RLF information.

As one example, the benefits of the above method include: the UE is ensured not to report the RLF related information.

As one example, the benefits of the above method include: and avoiding the RLF report by the UE.

According to an aspect of the application, the first signaling indicates a first condition and a first configuration, the first configuration being associated to the first target cell, the first target cell satisfying the first condition being used for triggering application of the first configuration.

As one embodiment, the features of the above method include: CHO configuration includes execution conditions and RRC configuration of the first target cell.

According to an aspect of the application, the first sub-information block comprises a first identity and the first condition, the first identity being used to indicate the first target cell.

As one embodiment, the features of the above method include: after the RLF recovery fails, the UE reports CHO execution conditions.

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

receiving second signaling when the first target cell does not belong to the first candidate cell set, wherein the second signaling comprises a first message; receiving third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; one of the second signaling and the third signaling is received;

wherein the first message is used to determine whether a radio link failure related message exists; the first set of candidate cells is indicated by first signaling; in response to determining that the radio connection failed, the first target cell is selected.

sending a second message;

receiving a third set of information;

wherein the second message is used to trigger receipt of the third set of information, the third set of information comprising a first sub-information block comprising the radio link failure related message; the first target cell does not belong to the first set of candidate cells.

receiving a fourth signaling;

transmitting a fifth signaling;

wherein the fifth signaling is used to trigger the second signaling.

The application discloses a first node used for wireless communication, which is characterized by comprising:

A first receiver that receives first signaling indicating a first set of candidate cells; determining a wireless connection failure; selecting a first target cell in response to the determination of the radio connection failure;

a first transmitter that transmits second signaling when the first target cell does not belong to the first candidate cell set, the second signaling including a first message; transmitting third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; one of the second signaling and the third signaling is transmitted;

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

a second receiver that receives second signaling when the first target cell does not belong to the first set of candidate cells, the second signaling including the first message; receiving third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; one of the second signaling and the third signaling is received;

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

when the UE experiences radio link failure, recovering by CHO, no RLF reporting is performed.

When the UE experiences MCG failure, RLF reporting is not performed when fast recovery through MCG.

When the UE recovers after experiencing a radio link failure, no RLF reporting is performed.

Saving signalling overhead.

Providing more efficient RLF reporting for the network side.

Drawings

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

fig. 1 shows a flow chart of transmission of first, second and third signaling according to an embodiment of the present application;

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

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

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

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

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

fig. 7 illustrates a schematic diagram of generating and clearing radio link failure related messages according to one embodiment of the present application;

fig. 8 is a schematic diagram illustrating generation and removal of radio link failure related messages according to another embodiment of the present application;

fig. 9 shows a schematic diagram of a first signaling indicating a first condition and a first configuration according to an embodiment of the present application;

fig. 10 shows a schematic diagram of a first sub-information block comprising a first identity and a first condition according to the present application;

fig. 11 shows a schematic diagram of first signaling including K1 first type signaling according to an embodiment of the present application;

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

FIG. 13 shows a block diagram of a processing apparatus for use in a second node according to one embodiment of the present application;

fig. 14 shows a schematic diagram of sending third signaling or second signaling in relation to whether a first target cell belongs to a first candidate cell set according to an embodiment of the present application.

Detailed Description

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

Example 1

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

In embodiment 1, a first node in the present application receives in step 101 a first signaling indicating a first set of candidate cells; determining a wireless connection failure; selecting a first target cell in response to the determination of the radio connection failure; transmitting second signaling when the first target cell does not belong to the first candidate cell set in step 102, the second signaling including a first message; transmitting third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; one of the second signaling and the third signaling is transmitted; wherein the first message is used to determine whether the radio link failure related message is present.

As an embodiment, the first signaling is used to configure for conditional handover (Conditional Handover, CHO), which refers to a handover decided to be performed by the first node when one or more performance conditions are met.

As an embodiment, the first signaling is used to configure for conditional primary and secondary Cell (PrimarySCG (SecondaryCellGroup) Cell, PSCell) modification (ConditionalPSCellChange, CPC), the CPC being a modification of PSCell decided to be performed by the first node when one or more execution conditions are met.

As an embodiment, the first signaling is used to configure for conditional PSCell addition (ConditionalPSCellAddition, CPA), the CPA referring to the addition of PSCell decided to be performed by the first node when one or more execution conditions are met.

As an embodiment, the sender of the first signaling comprises a maintaining base station of the first serving cell.

As a sub-embodiment of this embodiment, the first serving cell comprises a source serving cell.

As a sub-embodiment of this embodiment, the first serving cell comprises a source cell (sourccell).

As a sub-embodiment of this embodiment, the first serving cell includes a serving cell in which a radio connection failure occurs.

As a sub-embodiment of this embodiment, the first serving cell comprises a Source (Source) primary cell.

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

As an embodiment, the first signaling is used to configure for the conditional handover.

As an embodiment, the first signaling is used to configure a candidate cell list for the conditional handover, which is used to add/delete/modify candidate cells of the primary cell.

As an embodiment, the first signaling is used to configure for the conditional primary and secondary cell addition/modification.

As an embodiment, the first signaling is configured for a candidate cell list for conditional primary and secondary cell addition/modification, the candidate cell list being used for adding/deleting/modifying candidate cells of the primary and secondary cells.

As an embodiment, the first signaling is transmitted over an air interface.

As an embodiment, the first signaling is transmitted over a wireless interface.

As an embodiment, the first signaling is transmitted by higher layer signaling.

As an embodiment, the first signaling comprises higher layer signaling.

As an embodiment, the first signaling comprises all or part of a higher layer signaling.

As an embodiment, the signaling radio bearer of the first signaling includes SRB1 (Signalling Radio Bearer 1).

As an embodiment, the signaling radio bearer of the first signaling includes SRB3 (Signalling Radio Bearer 3).

As an embodiment, the first signaling includes a Downlink (DL) signaling.

As an embodiment, the logical channel carrying the first signaling comprises DCCH (Dedicated Control Channel, common control channel).

As an embodiment, the first signaling includes an RRC (Radio Resource Control ) Message (Message).

As an embodiment, the first signaling comprises all or part of an IE (Information Element ) of one RRC message.

For one embodiment, the first signaling includes all or part of a Field (Field) in an IE of an RRC message.

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

As an embodiment, the first signaling includes RRCReconfiguration IE.

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

As an embodiment, the first signaling includes ConditionalReconfiguration IE.

As an embodiment, the first signaling includes a condconfigtoadmodlist field.

As an embodiment, the first signaling includes a condConfigToRemoveList field.

As an embodiment, the first signaling comprises an attemptcond reconfig field.

As an embodiment, the first signaling includes a condcon figid IE.

As an embodiment, the first signaling includes CondConfigToAddModList IE.

As an embodiment, the first signaling includes a condexectioncond field.

As an embodiment, the first signaling includes a condrrcrecon field.

As an embodiment, the first signaling includes an RRCConnectionReconfiguration message.

As an embodiment, the first signaling includes conditionalReconfiguration IE.

As an embodiment, the first signaling includes ConditionalReconfiguration IE.

As an embodiment, the first signaling includes an attemptcond reconf field.

As an embodiment, the first signaling includes a condReconfigurationToAddModList field.

As an embodiment, the first signaling comprises a condreconfigurationtosemolist field.

As an embodiment, the first signaling includes ConditionalReconfigurationId IE.

As an embodiment, the first signaling includes CondReconfigurationToAddModList IE.

As an embodiment, the first signaling includes a condreconfigurationtoppply field.

As an embodiment, the first signaling includes a triggerCondition field.

As an embodiment, the sentence the first signaling indicates that the first set of candidate cells comprises the following meanings: the first signaling includes all or part of the first set of candidate cells.

As an embodiment, the first set of candidate cells comprises at least one Inactive (Inactive) serving cell.

As an embodiment, the first set of candidate cells comprises a plurality of serving cells.

As an embodiment, the first candidate cell set includes K candidate cells of the first type, where K is a positive integer; the K candidate cells of the first class are selected according to measurement reports of the first node.

As one embodiment, the radio connection failure comprises a primary cell group (MasterCellGroup, MCG) radio link failure.

As an embodiment, the radio connection failure comprises a primary cell group synchronization reconfiguration failure (re-configuration with sync).

As one embodiment, the radio connection failure includes an RRC connection re-establishment (rrcreestabliment) failure.

As one embodiment, the radio connection failure comprises a radio link failure (RadioLinkFailure, RLF).

As one embodiment, the radio connection Failure includes a Handover (HO) Failure.

As a sub-embodiment of this embodiment, the handover failure comprises a conditional handover (ConditionalHandover, CHO) failure.

As a sub-embodiment of this embodiment, the Handover Failure includes a Regular Handover Failure (Failure).

As a sub-embodiment of this embodiment, the Handover Failure includes DAPS (Dual Active Protocol Stack) Handover Failure (HOF).

As one embodiment, the radio connection failure includes a primary cell group (MasterCellGroup, MCG) link failure.

As one embodiment, the determining that the wireless connection fails includes: the first node determines that a radio connection with a first serving cell fails.

As one embodiment, the first node determines a radio connection failure based on the radio measurements.

As a sub-embodiment of this embodiment, the wireless measurement is for a first serving cell.

As a sub-embodiment of this embodiment, the wireless measurement comprises a measurement synchronization signal (Synchronization Signal).

As a sub-embodiment of this embodiment, the wireless measurements include Cell-specific reference signals (Cell-specific Reference Signal, CRS).

As a sub-embodiment of this embodiment, the wireless measurements include SS-RS (Synchronization Signal Reference Signal, synchronization reference signal).

As a sub-embodiment of this embodiment, the wireless measurement includes SSB (Synchronization Signal Block, synchronization signal fast).

As a sub-embodiment of this embodiment, the wireless measurement includes a primary synchronization signal (Primary Synchronization Signal)

As a sub-embodiment of this embodiment, the wireless measurement includes a secondary synchronization signal (Secondary Synchronization Signal, SSS)

As a sub-embodiment of this embodiment, the wireless measurement includes measuring SS/PBCH blocks (blocks).

As a sub-embodiment of this embodiment, the wireless measurement includes measuring a channel state indication reference signal (Channel State Information Reference Signal, CSI-RS).

As a sub-embodiment of this embodiment, the wireless measurement comprises measuring a cell common physical downlink control channel (Physical Downlink Control Channel, PDCCH).

As a sub-embodiment of this embodiment, the wireless measurement includes measuring a physical broadcast channel (Physical Broadcast Channel, PBCH).

As one embodiment, the first node determines that the radio connection has failed when the timer T310 expires.

As a sub-embodiment of this embodiment, the T310 is directed to the first serving cell.

As one embodiment, the first node determines that the radio connection has failed when the timer T312 expires.

As a sub-embodiment of this embodiment, the T312 is directed to the first serving cell.

As an embodiment, the first node determines that the radio connection fails when an indication of reaching a maximum number of retransmissions is received from an MCG RLC (radio link control).

As one embodiment, the first node determines that the radio connection fails when receiving an indication from the MCG RLC to reach a maximum number of retransmissions of one SRB or DRB.

As an embodiment, the first node determines that the radio connection with the first serving cell fails when a random access problem indication from the MCG MAC (Medium Access Control ) is received and none of the timers T300, T301, T304, T311 and T319 are running.

As an embodiment, the first node determines that the radio connection with the first serving cell fails when a random access problem indication is received from the MCG MAC and none of the timers T300, T301, T304 and T311 are running.

As an embodiment, the first node determines that the radio connection with the first serving cell fails, the first serving cell belonging to the MCG.

As an embodiment, the first target cell is a neighbor cell of the source serving cell.

As an embodiment, the first target cell is a source serving cell.

As an embodiment, the first target cell is a cell selected according to the measurement result.

As an embodiment, the first target cell is a cell selected by a cell selection procedure.

As an embodiment, the first target cell comprises a target candidate cell (Target Candidate Cell).

As an embodiment, the sentence as a response to the determining that the radio connection failed, selecting the first target cell comprises the following meanings: the first target cell is selected when the first node asserts (Declare) that the radio connection fails.

As an embodiment, the sentence as a response to the determining that the radio connection failed, selecting the first target cell comprises the following meanings: when the first node declares that the radio connection fails, the cell selected by the first node by performing a cell selection procedure is the first target cell.

As an embodiment, the sentence as a response to the determining that the radio connection failed, selecting the first target cell comprises the following meanings: the selecting the first target cell is triggered by the radio connection failure.

As an embodiment, the sentence as a response to the determining that the radio connection failed, selecting the first target cell comprises the following meanings: after determining that the radio connection fails, a cell selection process is triggered, and the selected cell is the first target cell.

As one example, the meaning of the response includes a next action.

As an embodiment, the meaning of the response comprises feedback.

As an embodiment, the phrase that the first target cell does not belong to the first set of candidate cells includes the following meanings: the first target cell is not one candidate cell in the first set of candidate cells.

As an embodiment, the phrase that the first target cell does not belong to the first set of candidate cells includes the following meanings: the first target cell is a cell outside the first set of candidate cells.

As an embodiment, the receiver of the second signaling comprises a maintaining base station of the first target cell, which is a cell outside the first set of candidate cells.

As an embodiment, the second signaling is transmitted over an air interface.

As an embodiment, the second signaling is transmitted over a wireless interface.

As an embodiment, the second signaling is transmitted by higher layer signaling.

As an embodiment, the second signaling comprises higher layer signaling.

As an embodiment, the second signaling comprises all or part of a higher layer signaling.

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

As an embodiment, the second signaling includes all or part of an IE of an RRC message.

As an embodiment, the second signaling includes all or part of a field in an IE of an RRC message.

As an embodiment, the second signaling is used for RRC connection re-establishment procedure.

As an embodiment, the second signaling is used to confirm that the RRC connection reestablishment was completed successfully.

As an embodiment, the signaling radio bearer of the second signaling includes SRB1.

As an embodiment, the second signaling includes an Uplink (UL) signaling.

As an embodiment, the logical channel carrying the second signaling comprises DCCH (Dedicated Control Channel, common control channel).

As an embodiment, the second signaling comprises an rrcreestablischentcomplete message.

As an embodiment, the second signaling comprises an rrcconnectionreestiblesetcomplete message.

As an embodiment, the sentence when the first target cell does not belong to the first candidate cell set, the sending the second signaling comprises the following meaning: and when the first target cell selected by the first node is not a CHO candidate cell, initiating an RRC connection reestablishment process.

As one embodiment, a second signaling is sent when the first target cell is one of the first set of candidate cells and the first node fails to establish a connection with the first target cell.

As an embodiment, the phrase the second signaling comprises that the first message comprises the following meaning: the second signaling is used to indicate the presence of the radio link failure related message by the first node.

As an embodiment, the phrase that the first target cell is one candidate cell of the first set of candidate cells includes the following meanings: the first target cell belongs to the first set of candidate cells.

As an embodiment, the receiver of the third signaling is a maintaining base station of the first target cell.

As an embodiment, the third signaling is transmitted over an air interface.

As an embodiment, the third signaling is transmitted over a wireless interface.

As an embodiment, the third signaling is transmitted by higher layer signaling.

As an embodiment, the third signaling comprises higher layer signaling.

As an embodiment, the third signaling comprises all or part of a higher layer signaling.

As an embodiment, the third signaling comprises an RRC message.

As an embodiment, the third signaling includes all or part of an IE of an RRC message.

As an embodiment, the third signaling includes all or part of a field in an IE of an RRC message.

As an embodiment, the third signaling is used for RRC connection reconfiguration procedure.

As an embodiment, the third signaling is used for a recovery procedure of the radio connection failure.

As an embodiment, the third signaling is used to confirm that the RRC connection reconfiguration was successfully completed.

As an embodiment, the signaling radio bearer of the third signaling includes SRB1.

As an embodiment, the signaling radio bearer of the third signaling includes SRB3.

As an embodiment, the third signaling comprises an uplink signaling.

As an embodiment, the logical channel carrying the third signaling comprises DCCH.

As an embodiment, the third signaling comprises an RRCConnectionReconfigurationComplete message.

As an embodiment, the third signaling comprises an rrcrecon configuration complete message.

As an embodiment, the sentence when the first target cell is one candidate cell in the first set of candidate cells, sending the third signaling comprises the following meaning: and when the first target cell selected by the first node is a CHO candidate cell, initiating an RRC connection reconfiguration process.

As an embodiment, when the first target cell is one candidate cell in the first set of candidate cells and the first node successfully establishes a connection with the first target cell, third signaling is sent.

As an embodiment, the phrase that the third signaling does not include the first message includes the following meaning: the third signaling is used to indicate that the first node does not have the radio link failure related message.

As an embodiment, when the first target cell does not belong to the first set of candidate cells, sending second signaling, the second signaling comprising a first message; and when the first target cell is one of the first set of candidate cells, transmitting third signaling, the third signaling not including the first message; one of the second signaling and the third signaling is transmitted.

As an embodiment, the second signaling and the third signaling are different RRC messages.

As an embodiment, the receiver of the second signaling and the receiver of the third signaling are different.

As an embodiment, the sentence one of the second signaling and the third signaling is sent comprising the following meaning: the second signaling is sent and the third signaling is not sent.

As an embodiment, the sentence one of the second signaling and the third signaling is sent comprising the following meaning: the third signaling is sent and the second signaling is not sent.

As an embodiment, the sentence one of the second signaling and the third signaling is sent comprising the following meaning: the second signaling and the third signaling are not sent simultaneously.

As an embodiment, the first message is used to determine if there is a radio link failure (Radio Link Failure, RLF) related message in the VarRLF-Report.

As an embodiment, the first message is used to determine whether Handover Failure (HOF) related information exists in the VarRLF-Report.

As an embodiment, the first message comprises all or part of higher layer signaling.

As an embodiment, the first message comprises all or part of RRC signaling.

As an embodiment, the first message indicates whether the first node currently stores the radio link failure related message.

As an embodiment, the first message indicates whether there is the radio link failure related message that has not yet been reported.

As an embodiment, the first message is used by a receiver to schedule the first node to report a UE information response (ueinfo response).

As an embodiment, the first message comprises rlf-infoaavailable.

As an embodiment, the sentence the first message is used to determine whether the radio link failure related message is present comprises the following meanings: the first message is used to explicitly indicate whether the radio link failure related message is present.

As a sub-embodiment of this embodiment, the first message includes a boolean value including a true value (wire) and a non-true value (False).

As an subsidiary embodiment of this sub-embodiment, said first message indicates the presence of said radio link failure related message when said first message comprises a true value.

As an subsidiary embodiment of this sub-embodiment, said first message indicates that said radio link failure related message is absent when said first message comprises a non-true value.

As a subsidiary embodiment of this sub-embodiment, said true value comprises 1 and said non-true value comprises 0.

As an embodiment, the sentence the first message is used to determine whether the radio link failure related message is present comprises the following meanings: the first message is used to implicitly indicate whether the radio link failure related message is present.

As a sub-embodiment of this embodiment, the first message indicates that the radio link failure related message is present when the first message is present.

As an subsidiary embodiment of this sub-embodiment, said phrase said first message has the following meaning: the first message is set to a true value (tube).

As a sub-embodiment of this embodiment, when the first message is not present, the first message indicates that the radio link failure related message is not present.

As an subsidiary embodiment of this sub-embodiment, said phrase said first message does not have a meaning comprising: the first message is default.

As an embodiment, the phrase the second signaling comprises that the first message comprises the following meaning: the first message is present in the second signaling.

As an embodiment, the phrase the second signaling comprises that the first message comprises the following meaning: the first message in the second signaling includes a true value.

As an embodiment, the phrase that the third signaling does not include the first message includes the following meaning: the first message is absent from the third signaling.

As an embodiment, the phrase the second signaling comprises that the first message comprises the following meaning: the first message in the second signaling includes a non-true value.

As an embodiment, the radio link failure related message is generated by the first node.

As an embodiment, the radio link failure related message is stored by the first node.

As an embodiment, the radio link failure related message is higher layer information.

As an embodiment, the radio link failure related message relates to the radio connection failure.

As an embodiment, the radio link failure related message is used to determine a serving cell for which the radio connection failed.

As an embodiment, the radio link failure related message is used to determine the radio link failure related measurement result.

As an embodiment, the radio link failure related message is used to determine the type of radio link failure.

As an embodiment, the radio link failure related message is used to determine the cause of the radio link failure.

As an embodiment, the radio link failure related message is stored in VarRLF-Report.

As an embodiment, the radio link failure related message comprises information stored in VarRLF-Report.

As an embodiment, the radio link failure related message includes part of the information stored in VarRLF-Report.

As one embodiment, the radio link failure related message is generated and stored when the first node detects (Detected) a radio connection failure.

As an embodiment, the radio link failure related message is generated and stored when the first node asserts (Declare) a radio connection failure.

As an example, the radio link failure related message is cleared (Clear) after being Detected (Detected) for more than 48 hours.

As an embodiment, the last radio connection failure is used to trigger the generation of the radio link failure related message.

As an embodiment, the radio link failure related information includes plmn-identity list.

As an embodiment, the radio link failure related information includes measresuultlastservcellie.

As an embodiment, the radio link failure related information includes a measresultneigcells ie.

As an embodiment, the radio link failure related information includes a previouspcalld.

As an embodiment, the radio link failure related information includes a failiedcelld.

As an embodiment, the radio link failure related information includes connectionFailureType.

As one embodiment, the radio link failure related information includes rlf-Cause.

As an embodiment, the messages (Message), IE (InformationElement), domain (file) in the present application include different versions in 3GPP evolution.

Example 2

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

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

As an embodiment, the UE201 supports transmissions in a Non-terrestrial network (Non-terrestrial Networks, NTN).

As an embodiment, the UE201 supports transmissions in a large latency difference network.

As an embodiment, the UE201 supports transmission of a terrestrial network (Terrestrial Networks, TN).

As an embodiment, the UE201 supports dual connectivity (Dual Connectivity, DC) transmissions.

As an embodiment, the UE201 is a user equipment (UserEquipment, UE).

As an embodiment, the UE201 is a terminal device (end).

As an embodiment, the gNB203 corresponds to the second node in the present application.

As an embodiment, the gNB203 corresponds to the third node in the present application.

As an embodiment, the gNB203 corresponds to the fourth node in the present application.

As an embodiment, the gNB203 supports transmissions in a non-terrestrial network (NTN).

As an embodiment, the gNB203 supports transmissions in a large latency difference network.

As one embodiment, the gNB203 supports transmission of a Terrestrial Network (TN).

As an embodiment, the gNB203 supports Dual Connection (DC) transmissions.

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

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

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

As an example, the gNB203 is a home base station (Femtocell).

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture according to one user plane and control plane of the present application, as shown in fig. 3. Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, fig. 3 shows the radio protocol architecture for the control plane 300 with three layers: layer 1, layer 2 and layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY301. Layer 2 (L2 layer) 305 is above PHY301 and includes a MAC (Medium Access Control ) sublayer 302, an RLC (Radio Link Control, radio link layer control protocol) sublayer 303, and a PDCP (Packet Data Convergence Protocol ) sublayer 304. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by ciphering the data packets and handover support. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out of order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control ) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer), in which user plane 350 the radio protocol architecture is substantially the same for the physical layer 351, PDCP sublayer 354 in the L2 layer 355, RLC sublayer 353 in the L2 layer 355 and MAC sublayer 352 in the L2 layer 355 as the corresponding layers and sublayers in the control plane 300, but PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. Also included in the L2 layer 355 in the user plane 350 is an SDAP (Service Data Adaptation Protocol ) sublayer 356, the SDAP sublayer 356 being responsible for mapping between QoS flows and data radio bearers (DRBs, data Radio Bearer) to support diversity of traffic.

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

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

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

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

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

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

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

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

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

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

As an embodiment, the third information set in the present application is generated in the RRC306.

Example 4

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

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

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

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

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

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

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

As an embodiment, the first communication device 450 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured to, with the at least one processor, the first communication device 450 at least: receiving first signaling, wherein the first signaling indicates a first candidate cell set; determining a wireless connection failure; selecting a first target cell in response to the determination of the radio connection failure; when the first target cell does not belong to the first candidate cell set, sending second signaling, wherein the second signaling comprises a first message; transmitting third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; one of the second signaling and the third signaling is transmitted; wherein the first message is used to determine whether the radio link failure related message is present.

As an embodiment, the first communication device 450 includes: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: receiving first signaling, wherein the first signaling indicates a first candidate cell set; determining a wireless connection failure; selecting a first target cell in response to the determination of the radio connection failure; when the first target cell does not belong to the first candidate cell set, sending second signaling, wherein the second signaling comprises a first message; transmitting third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; one of the second signaling and the third signaling is transmitted; wherein the first message is used to determine whether the radio link failure related message is present.

As one embodiment, the second communication device 410 includes: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured for use with the at least one processor. The second communication device 410 at least: a first signaling is sent, the first signaling indicating a first set of candidate cells; a radio connection failure is determined; in response to the determination of the radio connection failure, a first target cell is selected; receiving second signaling when the first target cell does not belong to the first candidate cell set, wherein the second signaling comprises a first message; receiving third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; one of the second signaling and the third signaling is received. Wherein the first message is used to determine whether the radio link failure related message is present.

As one embodiment, the second communication device 410 includes: a memory storing a program of computer-readable instructions that, when executed by at least one processor, produce acts comprising: a first signaling is sent, the first signaling indicating a first set of candidate cells; a radio connection failure is determined; in response to the determination of the radio connection failure, a first target cell is selected; receiving second signaling when the first target cell does not belong to the first candidate cell set, wherein the second signaling comprises a first message; receiving third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; one of the second signaling and the third signaling is received. Wherein the first message is used to determine whether the radio link failure related message is present.

As an embodiment, the antenna 452, the receiver 454, the receive processor 456, the controller/processor 459 is used to receive first signaling; the antenna 420, the transmitter 418, the transmit processor 416, and at least one of the controller/processors 475 are used to transmit first signaling.

As one implementation, the antenna 452, the transmitter 454, the transmit processor 468, the controller/processor 459 is used to transmit third signaling; the antenna 420, the receiver 418, the receive processor 470, at least one of the controller/processors 475 is used to receive third signaling.

As an embodiment, the antenna 452, the receiver 454, the receive processor 456, the controller/processor 459 is used to receive fifth signaling; the antenna 420, the transmitter 418, the transmit processor 416, and at least one of the controller/processors 475 are used to transmit fifth signaling.

As one implementation, the antenna 452, the transmitter 454, the transmit processor 468, the controller/processor 459 is used to transmit second and fourth signaling; the antenna 420, the receiver 418, the receive processor 470, and at least one of the controller/processor 475 is used to receive second signaling and fourth signaling.

As an example, the antenna 452, the receiver 454, the receive processor 456, the controller/processor 459 is used to receive a second message; the antenna 420, the transmitter 418, the transmit processor 416, and at least one of the controller/processors 475 are used to transmit a second message.

As one implementation, the antenna 452, the transmitter 454, the transmit processor 468, the controller/processor 459 is used to transmit a third set of information; the antenna 420, the receiver 418, the receive processor 470, at least one of the controller/processors 475 is used to receive a third set of information.

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

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

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

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

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

As an embodiment, the first communication device 450 is a user device supporting dual connectivity.

As an embodiment, the first communication device 450 is a user device supporting a large delay difference.

As an embodiment, the first communication device 450 is a NTN-enabled user device.

As an embodiment, the first communication device 450 is a TN enabled user device.

As an embodiment, the second communication device 410 is a base station device (gNB/eNB/ng-eNB).

As an embodiment, the second communication device 410 is a base station device supporting a large delay difference.

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

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

Example 5

Embodiment 5 illustrates a wireless signal transmission flow diagram according to one embodiment of the present application, as shown in fig. 5. The second node N02 is a maintenance base station of the cell determined by the first node U01 through cell selection; the third node N03 is a maintenance base station of the source cell of the first node U01; it is specifically noted that the order in this example is not limiting of the order of signal transmission and the order of implementation in this application.

For the followingFirst node U01 The first signaling is received in step S5101, the third signaling is transmitted in step S5102, the fourth signaling is transmitted in step S5103, the fifth signaling is received in step S5104, the second signaling is received in step S5105, the second message is received in step S5106, and the third information set is transmitted in step S5107.

For the followingSecond node N02The third signaling is received in step S5201, the fourth signaling is received in step S5202, the fifth signaling is sent in step S5203, the second signaling is received in step S5204, the second message is sent in step S5205, and the third set of information is received in step S5206.

For the followingThird node N03The first signaling is transmitted in step S5301.

In embodiment 5, the first signaling indicates a first set of candidate cells; determining a wireless connection failure; generating the radio link failure related message as a response to the determination of the radio link failure; selecting a first target cell in response to the determination of the radio connection failure; when the first target cell does not belong to the first candidate cell set, sending second signaling, wherein the second signaling comprises a first message; transmitting third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; clearing the radio link failure related message; the first target cell is one candidate cell in the first set of candidate cells; one of the second signaling and the third signaling is transmitted; the first message is used to determine whether the radio link failure related message exists; the fifth signaling is used to trigger the second signaling; the second message is used to trigger transmission of the third set of information, the third set of information comprising a first sub-information block, the first sub-information block comprising the radio link failure related message; the first target cell does not belong to the first set of candidate cells.

As an embodiment, the second node N02 is a maintaining base station of the first target cell.

As an embodiment, the second node N02 is a maintenance base station of a CHO candidate cell.

As an embodiment, the second node N02 is not a maintaining base station of the CHO candidate cell.

As an embodiment, the third node N03 is a maintenance base station of a cell in which the radio connection failure occurs.

As an embodiment, the third node N03 is a maintenance base station configuring the CHO cell.

As an embodiment, the first receiver generates the radio link failure related message.

As an embodiment, the first node U01 generates the radio link failure related message.

As an embodiment, the sentence is used as a response for determining the radio connection failure, and generating the radio connection failure related message includes the following meanings: and generating the radio link failure related message after determining the radio link failure.

As an embodiment, the sentence is used as a response for determining the radio connection failure, and generating the radio connection failure related message includes the following meanings: and when the wireless connection fails, generating the wireless link failure related message.

As an embodiment, the sentence is used as a response for determining the radio connection failure, and generating the radio connection failure related message includes the following meanings: the radio link failure related message is generated when the first node U01 asserts (Declare) the radio connection failure.

As one embodiment, the generating includes storing (Store).

As one embodiment, the generating includes Save (Save).

As an embodiment, the generating comprises setting (Set).

As an embodiment, the generating comprises recording (Log).

As an embodiment, the phrase generating the radio link failure related message includes the following meanings: setting a domain in the VarRLF-Report as information about the radio connection failure.

As an embodiment, the phrase generating the radio link failure related message includes the following meanings: storing the radio link failure related message to the VarRLF-Report.

As an embodiment, the first receiver clears the radio link failure related message.

As an embodiment, the first node U01 clears the radio link failure related message.

As one embodiment, the sentence "clear the radio link failure related message; the first target cell being one candidate cell of the first set of candidate cells "comprising the following meanings: and clearing the radio link failure related message as a response of selecting the first target cell.

As one embodiment, the sentence "clear the radio link failure related message; the first target cell being one candidate cell of the first set of candidate cells "comprising the following meanings: and when the selected cell is a CHO candidate cell, clearing the radio link failure related message.

As one embodiment, the sentence "clear the radio link failure related message; the first target cell being one candidate cell of the first set of candidate cells "comprising the following meanings: and in response to the first target cell being one candidate cell in the first candidate cell set, clearing the generated radio link failure related message.

As one embodiment, the sentence "clear the radio link failure related message; the first target cell being one candidate cell of the first set of candidate cells "comprising the following meanings: and when the first target cell is one candidate cell in the first candidate cell set and the first node recovers the wireless link through the first target cell, clearing the wireless link failure related message.

As an embodiment, the radio link failure related message is cleared in response to the phrase sending a third signaling.

As one example, the meaning of the purge includes a delete (Clear).

As an embodiment, the meaning of clearing includes discarding (Discard).

As an embodiment, the meaning of clearing includes Release (Release).

As one embodiment, the sentence clearing the radio link failure related message includes clearing the radio link failure related message stored in the VarRLF-Report.

As an embodiment, the fourth signaling is transmitted over an air interface.

As an embodiment, the fourth signaling is transmitted over a wireless interface.

As an embodiment, the fourth signaling is transmitted by higher layer signaling.

As an embodiment, the fourth signaling comprises higher layer signaling.

As an embodiment, the fourth signaling comprises all or part of a higher layer signaling.

As an embodiment, the fourth signaling includes an RRC (Radio Resource Control ) Message (Message).

As an embodiment, the fourth signaling includes all or part of an IE (Information Element ) of one RRC message.

For one embodiment, the fourth signaling includes all or part of the Field (Field) in an IE of an RRC message.

As an embodiment, the signaling radio bearer carrying the fourth signaling comprises SRB0 (SignallingRadio Bearer 1).

As an embodiment, the logical channel carrying the fourth signaling comprises CCCH (Common Control Channel ).

As an embodiment, the fourth signaling is used to initiate an RRC connection reestablishment request.

As an embodiment, the fourth signaling comprises an RRCReestablishmentRequest message.

As an embodiment, the fourth signaling comprises an rrcconnectionreestibleshmentrequest message.

As an embodiment, the fourth signaling is used to trigger the fifth signaling.

As an embodiment, the fifth signaling is transmitted over an air interface.

As an embodiment, the fifth signaling is transmitted over a wireless interface.

As an embodiment, the fifth signaling is transmitted by higher layer signaling.

As an embodiment, the fifth signaling comprises higher layer signaling.

As an embodiment, the fifth signaling comprises all or part of a higher layer signaling.

As an embodiment, the fifth signaling includes an RRC (Radio Resource Control ) Message (Message).

As an embodiment, the fifth signaling includes all or part of an IE (Information Element ) of one RRC message.

For one embodiment, the fifth signaling includes all or part of the Field (Field) in an IE of an RRC message.

As an embodiment, the signaling radio bearer carrying the fifth signaling includes SRB0.

As an embodiment, the signaling radio bearer carrying the fifth signaling comprises SRB1 (SignallingRadio Bearer 2).

As an embodiment, the logical channel carrying the fifth signaling comprises DCCH.

As an embodiment, the logical channel carrying the fifth signaling comprises CCCH.

As an embodiment, the fifth signaling is used to reconstruct SRB1.

As an embodiment, the fifth signaling includes an rrcreestablistant message.

As an embodiment, the fifth signaling includes an rrcconnectionreestisistent message.

As an embodiment, the sentence the fifth signaling is used to trigger the second signaling comprises the following meanings: and after the first node U01 receives the fifth signaling, sending the second signaling.

As an embodiment, the sentence the fifth signaling is used to trigger the second signaling comprises the following meanings: and after the first node U01 successfully completes RRC connection reestablishment according to the fifth signaling, the second signaling is sent.

As an embodiment, the sender of the second message is the same as the sender of the first signaling.

As an embodiment, the sender of the second message is the same as the receiver of the second signaling.

As an embodiment, the sender of the second message is the same as the receiver of the third signaling.

As an embodiment, the sender of the second message is different from the sender of the first signaling, the receiver of the second signaling and the receiver of the third signaling.

As an embodiment, the sender of the second message comprises a maintaining base station of the first target cell.

As an embodiment, the sender of the second message comprises a maintaining base station of the first serving cell.

As an embodiment, the sender of the second message comprises a maintaining base station of the serving cell to which the first node U01 is currently connected.

As a sub-embodiment of this embodiment, the serving cell to which the first node U01 is currently connected is different from the first target cell.

As a sub-embodiment of this embodiment, the serving cell to which the first node U01 is currently connected is the same as the first target cell.

As a sub-embodiment of this embodiment, the serving cell to which the first node U01 is currently connected is different from the first serving cell.

As a sub-embodiment of this embodiment, the serving cell to which the first node U01 is currently connected is the same as the first serving cell.

As an embodiment, the second message is transmitted over an air interface.

As an embodiment, the second message is transmitted over a wireless interface.

As an embodiment, the second message is transmitted by higher layer signaling.

As an embodiment, the second message comprises higher layer signaling.

As an embodiment, the second message comprises all or part of the higher layer signaling.

As an embodiment, the second message comprises an RRC message.

As an embodiment, the second message includes all or part of an IE of an RRC message.

As an embodiment, the second message includes all or part of a field in one IE of the RRC message.

As an embodiment, the second message includes a Downlink (DL) signaling.

As an embodiment, the signaling radio bearer of the second message includes SRB1.

As an embodiment, the logical channel carrying the second message comprises DCCH.

As an embodiment, the second message is used to request user equipment information (UEInformation).

As an embodiment, the second message is used to Request (Request) radio link failure related information.

As an embodiment, the second message includes a ueinfo request message.

As an embodiment, the second message comprises an RLF-ReportReq IE.

As an embodiment, the second message comprises a rlf-ReportReq field.

As an embodiment, the rlf-ReportReq is used to request the radio link failure related message when set to wire in the second message.

As an embodiment, the rlf-ReportReq is not set to wire in the second message, and is used for not requesting the radio link failure related message.

As an embodiment, the sentence the second message is used to trigger the sending of the third set of information comprises the following meanings: and when the first node U01 receives the second message, sending the third information set.

As an embodiment, the sentence the second message is used to trigger the sending of the third set of information comprises the following meanings: the first node U01 determines information in the third information set according to the received second message.

As an embodiment, the receiver of the third set of messages is the same as the sender of the second message.

As an embodiment, the third set of information is transmitted over an air interface.

As an embodiment, the third set of information is transmitted over a wireless interface.

As an embodiment, the third set of information is transmitted by higher layer signaling.

As an embodiment, the third set of information comprises higher layer signaling.

As an embodiment, the third set of information comprises all or part of a higher layer signaling.

As an embodiment, the third set of information comprises an RRC message.

As an embodiment, the third information set includes all or part of an IE of one RRC message.

As an embodiment, the third information set includes all or part of a field in an IE of an RRC message.

As an embodiment, the third information set includes an Uplink (UL) message.

As an embodiment, the third set of information is used for user equipment information response.

As an embodiment, the third set of information is used for reporting radio link failure related messages.

As an embodiment, the signaling radio bearer of the third set of information includes SRB1.

As an embodiment, the signaling radio bearers of the third signaling set include SRB2 (SignallingRadio Bearer 2).

As an embodiment, the logical channel carrying the third set of information comprises DCCH.

As an embodiment, the third information set includes a ueinfo information response message.

As an embodiment, the third set of information comprises a rlf-Report IE, the rlf-Report IE comprising the radio link failure related message.

As an embodiment, the sentence said third set of information comprises a first sub-information block comprising the following meanings: the first sub-information block is one or more IEs in the third information set message.

As an embodiment, the sentence said third set of information comprises a first sub-information block comprising the following meanings: the first sub-information block is one or more fields of an IE in the third information set message.

As an embodiment, the first sub-information block comprises a rlf-Report field.

As an embodiment, the first sub-information block comprises a partial field in RLF-Report-r 9.

As an embodiment, the first sub-information block comprises a partial field in RLF-Report-r 16.

As an embodiment, the first sub-information block comprises all domains in RLF-Report-r 9.

As an embodiment, the first sub-information block comprises all domains in RLF-Report-r 16.

As an embodiment, the phrase that the first sub-information block comprises the radio link failure related message comprises the following meaning: the first sub-information block includes all of the radio link failure related messages.

As an embodiment, the phrase that the first sub-information block comprises the radio link failure related message comprises the following meaning: the first sub-information block includes a portion of the radio link failure related message.

As an embodiment, the first message is used to determine the transmission of the second message.

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

As one embodiment, the receiver of the first message determines the sending time of the second message according to the first message.

As one embodiment, the receiver of the first message assists in determining the sending time of the second message according to the first message.

As an embodiment, the sending time of the second message is determined by the receiver of the first message.

As one embodiment, the receiver of the first message determines the sending time of the second message according to the first message and the scheduling result of the scheduler.

As an embodiment, the dashed box F1 is optional.

As an embodiment, the dashed box F2 is optional.

As one embodiment, the dashed box F1 exists and the dashed box F2 does not exist.

As one embodiment, the dashed box F1 is absent and the dashed box F2 is present.

Example 6

Embodiment 6 illustrates a wireless signal transmission flow diagram according to another embodiment of the present application, as shown in fig. 6. The second node N02 is a maintenance base station of the cell determined by the first node U01 through cell selection; the third node N03 is a maintenance base station of the source cell of the first node U01; the fourth node N04 is an auxiliary node; it is specifically noted that the order in this example is not limiting of the order of signal transmission and the order of implementation in this application.

For the followingFirst node U01The sixth signaling is transmitted in step S6101 (a), or the sixth signaling is transmitted in step S6101 (b), the first signaling is received in step S6102, the third signaling is transmitted in step S6103, the fourth signaling is transmitted in step S6104, the fifth signaling is received in step S6105, the second signaling is transmitted in step S6106, the second message is received in step S6107, and the third information set is transmitted in step S6108.

For the followingSecond node N02The fourth signaling is received in step S6201, the fifth signaling is transmitted in step S6202, the second signaling is received in step S6203, the second message is transmitted in step S6204, and the third information set is received in step S6205.

For the followingThird node N03The sixth signaling is received in step S6301, and the third signaling is received in step S6302.

For the followingFourth node N04The sixth signaling is received in step S6401 and the first signaling is transmitted in step S6402.

In embodiment 6, a radio connection failure is determined; generating the radio link failure related message as a response to the determination of the radio link failure; selecting a first target cell in response to the determination of the radio connection failure; the sixth signaling is used to indicate the radio connection failure; the first signaling indicates a first set of candidate cells; when the first target cell does not belong to the first candidate cell set, sending second signaling, wherein the second signaling comprises a first message; transmitting third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; clearing the radio link failure related message; the first target cell is one candidate cell in the first set of candidate cells; one of the second signaling and the third signaling is transmitted; the first message is used to determine whether the radio link failure related message exists; the fifth signaling is used to trigger the second signaling; the second message is used to trigger transmission of the third set of information, the third set of information comprising a first sub-information block, the first sub-information block comprising the radio link failure related message; the first target cell does not belong to the first set of candidate cells.

In embodiment 6, a first receiver determines that a radio connection fails; selecting a first target cell in response to the determination of the radio connection failure; receiving first signaling, wherein the first signaling indicates a first candidate cell set; a first transmitter that transmits second signaling when the first target cell does not belong to the first candidate cell set, the second signaling including a first message; transmitting third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; one of the second signaling and the third signaling is transmitted; the first message is used to determine whether the radio link failure related message is present.

As an embodiment, the first node U01 is connected to the third node N03 and the fourth node N04 through a dual connection, where the third node N03 is a primary node and the fourth node N04 is a secondary node.

As an embodiment, the third node N03 comprises a master node, which is associated to a master Cell group (MasterCellGroup, MCG) comprising one Primary Cell (PCell) and M1 secondary cells (SecondaryCell, SCell), the M1 being a non-negative integer.

As an embodiment, the fourth node N04 comprises a secondary node, the secondary Cell being associated to a secondary Cell group (SecondaryCellGroup, SCG), the secondary Cell group comprising one Primary secondary Cell (PSCell) and M2 secondary cells (scells), the M2 being a non-negative integer.

As an embodiment, the first node U01 determines that the radio connection failure includes the MCG having a radio link failure.

As an embodiment, the first node U01 determining that the radio connection fails includes the SCG having a radio link failure.

As an embodiment, the sentence as a response to the determining that the radio connection failed, selecting the first target cell comprises the following meanings: and in response to the determination of the radio connection failure, selecting to perform RRC connection reestablishment or RRC connection recovery.

As an embodiment, the sentence as a response to the determining that the radio connection failed, selecting the first target cell comprises the following meanings: in response to the determination of radio connection failure, the sixth signaling is selected to be sent to the third node N03 or the fourth signaling is selected to be sent to the second node N02.

As an embodiment, the sentence as a response to the determining that the radio connection failed, selecting the first target cell comprises the following meanings: if the first node U01 is configured to perform MCG recovery, the first target cell includes the PCell; otherwise, the first target cell includes a cell determined by the first node U01 through cell reselection.

As an embodiment, the first target cell comprises a source serving cell.

As an embodiment, the first target cell comprises a PCell.

As an embodiment, the first target cell comprises a cell determined by cell reselection.

As an embodiment, the first target cell is associated to the second node N02.

As an embodiment, the first target cell is associated to the third node N03.

As one embodiment, the sentence selection of the first target cell includes determining the first target cell.

As an embodiment, the first transmitter transmits a sixth signaling, which is used to indicate that the MCG has failed the radio connection.

As an embodiment, the receiver of the sixth signaling comprises the third node N03.

As an embodiment, the receiver of the sixth signaling comprises the fourth node N04.

As an embodiment, the sixth signaling is transmitted over an air interface.

As an embodiment, the sixth signaling is transmitted over a wireless interface.

As an embodiment, the sixth signaling is transmitted by higher layer signaling.

As an embodiment, the signaling radio bearer carrying the sixth signaling includes split srb1 (Signalling Radio Bearer 1).

As an embodiment, the signaling radio bearer carrying the sixth signaling comprises SRB3 (Signalling Radio Bearer 3).

As an embodiment, when the SRB3 is configured, the sixth signaling is sent to the fourth node N04 through the SRB 3; when the SRB3 is not configured, the sixth signaling is sent to the third node N03 through the SRB 1.

As an embodiment, the logical channel carrying the sixth signaling comprises DCCH (Dedicated Control Channel, common control channel).

As an embodiment, the sixth signaling comprises higher layer signaling.

As an embodiment, the sixth signaling comprises all or part of a higher layer signaling.

As an embodiment, the sixth signaling includes an RRC (Radio Resource Control ) Message (Message).

As an embodiment, the sixth signaling includes all or part of an IE (Information Element ) of one RRC message.

For one embodiment, the sixth signaling includes all or part of the Field (Field) in an IE of an RRC message.

As an embodiment, the sixth signaling includes the radio link failure related message.

As an embodiment, the sixth signaling includes a measurement result of the MCG.

As an embodiment, the sixth signaling includes a cause of MCG failure.

As an embodiment, the sixth signaling includes a measurement of SCG.

As an embodiment, the sixth signaling includes an mcgfailurenformation message.

As an embodiment, the first signaling is used to configure for MCG failure recovery.

As an embodiment, the first signaling comprises a dlinfo information transfer mrdc message.

As an embodiment, the first signaling comprises dl-DCCH-MessageNR IE.

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

As an embodiment, the first signaling is used to transmit an RRCRelease message.

As an embodiment, the first signaling comprises dl-DCCH-MessageEUTRA IE.

As an embodiment, the first signaling is used to transmit an RRCConnectionReconfiguration message.

As an embodiment, the first signaling is used to transmit an RRCConnectionRelease message.

As an embodiment, the signaling radio bearer carrying the first signaling comprises SRB3.

As an embodiment, the sender of the first signaling comprises the fourth node N04.

As an embodiment, the sentence the first signaling indicates that the first set of candidate cells comprises the following meanings: the first signaling is associated to the first set of candidate cells.

As an embodiment, the sentence the first signaling indicates that the first set of candidate cells comprises the following meanings: the first signaling is related to the first set of candidate cells.

As an embodiment, the sentence the first signaling indicates that the first set of candidate cells comprises the following meanings: the first signaling is used to configure for the first set of candidate cells.

As an embodiment, the first set of candidate cells comprises MCG.

As an embodiment, the first set of candidate cells comprises PCell.

As an embodiment, the first set of candidate cells comprises source cells.

As an embodiment, the first set of candidate cells is associated to the third node N03.

As one embodiment, the sentence clears the radio link failure related message; the first target cell being one candidate cell of the first set of candidate cells comprising the following meanings: and in response to the first target cell being one candidate cell in the first set of candidate cells, clearing the radio link failure related message.

As one embodiment, the sentence clears the radio link failure related message; the first target cell being one candidate cell of the first set of candidate cells comprising the following meanings: and when the first target cell is the PCell, clearing the radio link failure related message.

As one embodiment, the sentence clears the radio link failure related message; the first target cell being one candidate cell of the first set of candidate cells comprising the following meanings: and when the MCG fast recovery is executed, clearing the radio link failure related message.

As an embodiment, the sentence when the first target cell is one candidate cell in the first set of candidate cells, sending the third signaling comprises the following meaning: and transmitting the third signaling when the first target cell is a PCell of the MCG.

As an embodiment, the third signaling is used to confirm successful completion of RRC connection reconfiguration.

As an embodiment, the receiver of the third signaling comprises the third node N03.

As an embodiment, the receiver of the third signaling includes the PCell.

As an embodiment, the third signaling does not include the first message.

As an embodiment, the third signaling is used to indicate that the first node U01 does not have the radio link failure related message.

As an embodiment, the sentence when the first target cell does not belong to the first candidate cell set, the sending the second signaling comprises the following meaning: and transmitting the second signaling when the first target cell is a cell determined by cell selection.

As an embodiment, the fifth signaling includes an rrcreestablistant message.

As an embodiment, the second signaling is used to confirm successful completion of RRC connection reestablishment.

As an embodiment, the receiver of the second signaling comprises the second node N02.

As an embodiment, the receiver of the second signaling comprises a sustaining base station of a cell other than the first target cell.

As an embodiment, the second signaling is used to indicate the presence of the radio link failure related message by the first node U01.

As an embodiment, the radio link failure related message is cleared before the third signaling is sent.

As an embodiment, after the third signaling is sent, the radio link failure related message is cleared.

As an embodiment, the second message is not used to request the RLF report when the third signaling is sent.

As an embodiment, the second message does not include rlf-ReportReq when the third signaling is sent.

As an embodiment, the third set of information does not comprise the first sub-information block when the third signaling is sent.

As an embodiment, when the third signaling is sent, the third set of information does not include the radio link failure related message.

As an embodiment, the dashed box F1, the dashed box F2, the dashed box F3 are used to perform RRC connection recovery.

As an embodiment, the dashed box F4 is used to perform RRC connection re-establishment.

As an embodiment, the dashed box F1 is optional.

As an embodiment, the dashed box F2 is optional.

As an embodiment, the dashed box F3 is optional.

As an embodiment, the dashed box F4 is optional.

As one embodiment, the dashed box F3 exists and the dashed box F4 does not exist.

As one embodiment, the dashed box F3 is absent and the dashed box F4 is present.

Example 7

Embodiment 7 illustrates a schematic diagram of generating and clearing radio link failure related messages according to one embodiment of the present application. In fig. 7, each block represents a step, and it is emphasized that the order of the blocks in the drawing does not represent temporal relationships between the represented steps.

In embodiment 7, a first node receives first signaling in step S701; determining a radio connection failure in step S702; generating a radio link failure related message as a response to the determination of radio link failure in step S703; selecting a first target cell in step S704, and the first target cell belongs to a first set of candidate cells; transmitting a third signaling in step S705; the radio link failure related message is cleared in step S706.

As an embodiment, the sender of the first signaling comprises the first target cell.

As one embodiment, the radio connection failure includes an MCG radio link failure (RadioLinkFailure, RLF).

As an embodiment, the radio connection failure includes a synchronous reconfiguration (re-configuration with sync) failure of the MCG.

As an embodiment, the radio connection failure triggers a cell selection, and the cell selected by the cell selection is the first target cell.

As an embodiment, the first signaling comprises a first indicator, which is used to indicate whether the first node is allowed to attempt to perform the first configuration in the present application.

As an embodiment, the first indicator is used to indicate that the first node may perform the first configuration if the selected first cell is one cell of the first set of candidate cells after the radio connection fails.

As a sub-embodiment of this embodiment, the first indicator is configured to indicate that the first node is allowed to attempt to perform the first configuration in the present application.

As a sub-embodiment of this embodiment, the first indicator is not configured to indicate that the first node is not allowed to attempt to perform the first configuration in the present application.

As a sub-embodiment of this embodiment, the configured refers to present and the unconfigured refers to absent.

As a sub-embodiment of this embodiment, the first indicator is a field in the first signaling.

As a sub-embodiment of this embodiment, the first indicator comprises an attemptcond reconfig field.

As a sub-embodiment of this embodiment, the first indicator comprises an attemptcondecon field.

As an embodiment, the first indicator is configured in the first signaling.

As an embodiment, the sentence that the first target cell belongs to the first candidate cell set includes the following meanings: the first target cell is one cell in a first set of candidate cells.

As an embodiment, the first node applies the first configuration if the first target cell belongs to the first set of candidate cells, the first configuration being associated to the first target cell.

As an embodiment, the first node sends the third signaling in response to applying the first configuration.

As an embodiment, the third signaling does not include the first message in the present application.

As an embodiment, the first node does not add the first message to the third signaling.

As an embodiment, the first node does not include the first message when setting the content of the third signaling.

As an embodiment, when the content in the third signaling is set, the radio link failure related message exists in the first node.

As an embodiment, when the content in the third signaling is set, the first node has the radio link failure related message in VarRLF-Report.

As an embodiment, the first node clears the radio link failure related message in response to sending the third signaling.

As an embodiment, the first node clears the radio link failure related message after the third signaling is successfully sent.

As an embodiment, the step S801 receives the first signaling before the step S802 determines that the radio connection fails.

As an embodiment, the step S801 receives the first signaling after determining that the radio connection fails in step S802.

Example 8

Embodiment 8 illustrates a schematic diagram of generating and clearing a radio link failure related message according to another embodiment of the present application, as shown in fig. 8. In fig. 8, each block represents a step, and it is emphasized that the order of the blocks in the drawing does not represent temporal relationships between the represented steps.

In embodiment 8, the first node receives first signaling in step S801; determining a radio connection failure in step S802; generating a radio link failure related message as a response to the determination of radio link failure in step S803; selecting a first target cell in step S804, the first target cell belonging to a first candidate cell set; clearing the radio link failure related message in step S805; the third signaling is sent in step S806.

As an embodiment, the first node is allowed to attempt to perform the first configuration in the present application.

As an embodiment, the sentence that the first target cell belongs to the first candidate cell set includes the following meanings: the first target cell is a CHO candidate cell.

As an embodiment, the first node clears the radio link failure related message in response to applying the first configuration.

As an embodiment, the first node clears the radio link failure related message in response to selecting the first target cell.

As an embodiment, the first node clears the radio link failure related message before the third signaling is sent.

As an embodiment, the first node sends the third signaling after the radio link failure related message is cleared.

As an embodiment, after the radio link failure related message is cleared, the first node does not have the radio link failure related message in VarRLF-Report.

As an embodiment, in response to clearing the radio link failure related message, the first node sets the third signaling, where the third signaling does not include the first message in the present application.

As an embodiment, the phrase that the third signaling does not include the first message in the present application includes the following meaning: the first node does not add the first message to the third signaling.

As an embodiment, the first node has no radio link failure related message in VarRLF-Report when the third signaling is set.

As an embodiment, the radio link failure related message in the VarRLF-Report has been cleared when the third signaling is set.

Example 9

Embodiment 9 illustrates a schematic diagram of a first signaling indicating a first condition and a first configuration according to one embodiment of the present application, as shown in fig. 9.

In embodiment 9, the first signaling indicates a first condition and a first configuration, the first configuration being associated to the first target cell, the first target cell satisfying the first condition being used to trigger application of the first configuration.

As an embodiment, the phrase the first signaling indicates that the first condition and the first configuration include the following meanings: the first signaling includes the first condition and the first configuration.

As an embodiment, the phrase the first signaling indicates that the first condition and the first configuration include the following meanings: the first condition and the first configuration are one or more domains in the first signaling, respectively.

As one embodiment, the first condition includes an execution condition (Execution Condition).

As an embodiment, the first condition is used to determine a condition under which the first configuration is applied.

As an embodiment, the first condition is used to determine a condition that the execution condition configuration (Conditional Reconfiguration) is triggered to satisfy.

As an embodiment, the first condition is used to determine an execution condition of the condition switching (CHO) in the present application.

As an embodiment, the first condition is used to determine an execution condition of the condition PSCell change in the present application.

As an embodiment, the first condition includes a condexecu-tion cond field.

As an embodiment, the first condition includes a triggerCondition field.

As an embodiment, the first configuration is related to the first target cell.

As an embodiment, the first configuration comprises an RRC configuration of the first target cell.

As an embodiment, the first configuration comprises a condrrcrecon field.

As an embodiment, the first configuration includes a condreconfigurationtopapplied domain.

As an embodiment, the sentence that the first target cell satisfies the first condition is used to trigger the application of the first configuration comprises the following meanings: the first configuration of the first target cell is applied by the first node when the first condition is satisfied.

As an embodiment, when the radio connection fails, the first condition does not need to be evaluated when the first configuration is applied if the selected cell is the first target cell.

As an embodiment, the first condition is satisfied when the first configuration is performed.

As an embodiment, the first condition is not satisfied when the first configuration is performed.

Example 10

Embodiment 10 illustrates a schematic diagram of a first sub-information block including a first identification and a first condition according to one embodiment of the present application, as shown in fig. 10.

In embodiment 10, the first sub-information block includes a first identity and the first condition, the first identity being used to indicate the first target cell.

As an embodiment, the first identity is related to the first target cell.

As an embodiment, the first identity is used to determine a cell to be used for radio link failure recovery.

As an embodiment, the first identity is used to determine the first target cell.

As an embodiment, the first identity comprises a global cell identity (CellGlobalIdentity, CGI) of the first target cell.

As an embodiment, the first identity comprises an evolved cell global identity (Evolved Cell Global Identifier, ECGI) of the first target cell.

As an embodiment, the first identity comprises a physical cell identity (PhysicalCellIdentity, PCI) of the first target cell.

As an embodiment, the first identity comprises cellglobalideeutra of the first target cell.

As an embodiment, the first identifier includes CGI-Info-location of the first target cell.

As one embodiment, the first identifier includes a reestibleshmentcellid.

As an embodiment, the first identifier includes a reconfigurationCellId.

As an embodiment, the first identifier includes a recoupercell id.

As an embodiment, the first condition is used to determine an execution condition when the first configuration is applied.

As one embodiment, the first condition includes condexecu-tion cond.

As an embodiment, the first condition includes triggerCondition.

As an embodiment, the first condition comprises one or more trigger conditions.

As an embodiment, the first condition comprises one or two trigger conditions.

As one embodiment, the first condition includes an A3 event.

As one embodiment, the first condition includes an A5 event.

As an embodiment, the evaluating the trigger amount (Trigger Quantities) of the first condition comprises RSRP (Reference Signal Received Power ).

As an embodiment, the evaluating the trigger amount of the first condition comprises RSRQ (Reference Signal Received Quality ).

As an embodiment, the triggering quantity for evaluating the first condition includes SINR (Signal to Interference plus Noise Ratio, signal-to-interference-and-noise ratio).

As an embodiment, the trigger amount evaluating the first condition includes RSRP and RSRQ.

As an embodiment, the trigger amount evaluating the first condition includes RSRP and SINR.

As an embodiment, the trigger quantity comprises a measurement quantity (Measurement quantity).

As an embodiment, after the radio connection fails, the radio connection failure recovery failure is performed through the conditional handover in the present application.

As an embodiment, the radio connection failure recovery failure refers to the first configuration application failure.

As an embodiment, after the radio connection fails, the radio connection failure recovery is successfully performed through the conditional handover in the present application.

As an embodiment, the successful recovery of the radio connection failure refers to the success of the first configuration application.

As an embodiment, after the radio connection failure recovery fails, an RRC (radio resource control) connection reestablishment procedure is performed.

As an embodiment, the second signaling is sent.

As an embodiment, after the radio connection failure recovery is successful, an RRC connection reconfiguration procedure is performed.

As an embodiment, the third signaling is sent.

As one embodiment, the first configuration application fails and the second signaling is sent.

As an embodiment, when the fourth signaling is set, the radio connection failure related message is stored in the VarRLF-Report, the radio connection failure related message including the first identification and the first condition.

As an embodiment, when the fourth signaling is set, the radio connection failure related message is stored in the VarRLF-Report, the radio connection failure related message including the first identity.

As an embodiment, when the fourth signaling is set, the radio connection failure related message is stored in the VarRLF-Report, the radio connection failure related message including the first condition.

As an embodiment, the fourth signaling is set before the fourth signaling is sent.

As an embodiment, when the first target cell is one candidate cell of the first set of candidate cells and the first node fails to apply the first configuration, the first sub-information block includes the radio connection failure related message including the first identity and the first condition.

As an embodiment, the first sub-information block comprises the first identification and the first condition comprises the following meanings: the third set of information includes a first identification and the first condition.

As an embodiment, when the first target cell is one of the first set of candidate cells and the first node fails to apply the first configuration, the first transmitter sends a second signaling, the second signaling comprising the first message.

Example 11

Embodiment 11 illustrates a schematic diagram in which the first signaling includes K1 first type signaling according to an embodiment of the present application, as shown in fig. 11.

In embodiment 11, the first signaling includes the K1 first type signaling; any one of the K1 first type of signaling is used to indicate all or part of the first set of candidate cells; the K1 is a positive integer.

As an embodiment, any one of the K1 first type of signaling has the same signaling format as the first signaling.

As an embodiment, any one of the K1 first type of signaling has a different signaling format than the first signaling.

As an embodiment, any one of the K1 first type of signaling is used to carry information about one or more candidate cells in the first set of candidate cells.

As an embodiment, the K1 first type signaling does not belong to the same RRC (radio resource control) message.

As an embodiment, the candidate cells carried in the K1 first type signaling together form the first candidate cell set.

As an embodiment, any one of the K1 first type of signaling includes an rrcrecon configuration message.

As an embodiment, any one of the K1 first type of signaling includes an RRCConnectionReconfiguration message.

As an embodiment, any one of the K1 first type of signaling includes ConditionalReconfiguration IE.

As an embodiment, the senders of the K1 first type signaling are the same.

As an embodiment, the K1 first type signaling senders are different.

As an embodiment, the K1 first type signaling is used to configure for CHO (conditional handover).

As an embodiment, the K1 first type signaling is used to configure for CPC (conditional primary and secondary cell change).

As an embodiment, one of the K1 first type signaling is sent through SRB1 (Signalling Radio Bearer 1).

As an embodiment, one of the K1 first type signaling is sent through SRB3 (Signalling Radio Bearer 3).

Example 12

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

The first receiver 1201 receives first signaling indicating a first set of candidate cells; determining a wireless connection failure; selecting a first target cell in response to the determination of the radio connection failure;

the first transmitter 1202, when the first target cell does not belong to the first set of candidate cells, sends second signaling, the second signaling comprising a first message; transmitting third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; one of the second signaling and the third signaling is transmitted;

In embodiment 12, the first message is used to determine whether the radio link failure related message is present.

For one embodiment, the first receiver 1201 receives a second message; the first transmitter 1202 transmitting a third set of information; wherein the second message is used to trigger transmission of the third set of information, the third set of information comprising a first sub-information block comprising the radio link failure related message; the first target cell does not belong to the first set of candidate cells.

As an embodiment, the first transmitter 1202 sends fourth signaling; the first receiver 1201 receives fifth signaling; wherein the fifth signaling is used to trigger the second signaling.

As an embodiment, the radio link failure related message is generated in response to the determination of radio link failure.

As one embodiment, the radio link failure related message is cleared; wherein the first target cell is one candidate cell in the first set of candidate cells.

As an embodiment, the first signaling indicates a first condition and a first configuration, the first configuration being associated to the first target cell, the first target cell satisfying the first condition being used to trigger application of the first configuration.

As an embodiment, the first sub-information block comprises a first identity and the first condition, the first identity being used to indicate the first target cell.

As an example, the first receiver 1201 includes the antenna 452, the receiver 454, the multi-antenna receive processor 458, the receive processor 456, the controller/processor 459, the memory 460, and the data source 467 of fig. 4 of the present application.

As an embodiment, the first receiver 1201 includes an antenna 452, a receiver 454, a multi-antenna receiving processor 458, and a receiving processor 456 in fig. 4 of the present application.

As an embodiment, the first receiver 1201 includes the antenna 452, the receiver 454, and the receiving processor 456 of fig. 4 of the present application.

As an example, the first transmitter 1202 includes an antenna 452, a transmitter 454, a multi-antenna transmit processor 457, a transmit processor 468, a controller/processor 459, a memory 460, and a data source 467 of fig. 4 of the present application.

As an example, the first transmitter 1202 includes an antenna 452, a transmitter 454, a multi-antenna transmit processor 457, and a transmit processor 468 of fig. 4 of the present application.

As an example, the first transmitter 1202 includes an antenna 452, a transmitter 454, and a transmission processor 468 of fig. 4 of the present application.

Example 13

Embodiment 13 illustrates a block diagram of a processing apparatus for use in a second node according to one embodiment of the present application; as shown in fig. 13. In fig. 13, the processing means 1300 in the second node comprises a second transmitter 1301 and a second receiver 1302.

A second receiver 1302 that receives second signaling when the first target cell does not belong to the first set of candidate cells, the second signaling comprising a first message; receiving third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message; one of the second signaling and the third signaling is received;

in embodiment 13, the first message is used to determine whether a radio link failure related message exists; the first set of candidate cells is indicated by first signaling; in response to determining that the radio connection failed, the first target cell is selected.

As an embodiment, the second transmitter 1301 transmits a second message; the second receiver 1302 receives a third set of information; wherein the second message is used to trigger receipt of the third set of information, the third set of information comprising a first sub-information block comprising the radio link failure related message; the first target cell does not belong to the first set of candidate cells.

For one embodiment, the second receiver 1302 receives fourth signaling; the second transmitter 1301 transmits fifth signaling; wherein the fifth signaling is used to trigger the second signaling.

As an embodiment, the radio link failure related message is cleared by the first node in the present application.

As an example, the second transmitter 1301 includes the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 416, the controller/processor 475, and the memory 476 of fig. 4 of the present application.

As an example, the second transmitter 1301 includes the antenna 420, the transmitter 418, the multi-antenna transmitting processor 471, and the transmitting processor 416 shown in fig. 4 of the present application.

As an embodiment, the second transmitter 1301 includes the antenna 420 in fig. 4 of the present application, the transmitter 418, and the transmitting processor 416.

The second receiver 1302, as one embodiment, includes the antenna 420, the receiver 418, the multi-antenna receive processor 472, the receive processor 470, the controller/processor 475, and the memory 476 of fig. 4 of the present application.

The second receiver 1302, for one embodiment, includes the antenna 420, the receiver 418, the multi-antenna receive processor 472, and the receive processor 470 of fig. 4 of the present application.

The second receiver 1302, as one embodiment, includes the antenna 420, the receiver 418, and the receive processor 470 of fig. 4 of the present application.

Example 14

Embodiment 14 illustrates a schematic diagram of sending third signaling or second signaling regarding whether the first target cell belongs to the first candidate cell set according to one embodiment of the present application, as shown in fig. 14.

In embodiment 14, a first node determines in step S1401 whether the first target cell belongs to the first candidate cell set; transmitting the third signaling in step S1402 (a) if the first target cell belongs to the first candidate cell set; if the first target cell does not belong to the first candidate cell, fourth signaling is transmitted in step S1402 (b), fifth signaling is received in step S1403, and the second signaling is transmitted in step S1404.

As an embodiment, when the first target cell does not belong to the first set of candidate cells, sending the second signaling, the second signaling comprising a first message; transmitting the third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message;

as an embodiment, the step S1402 (a) is used to perform RRC connection reconfiguration.

As one embodiment, the steps S1402 (b), S1403 and S1404 are used to perform RRC connection reestablishment.

As an embodiment, the first target cell includes one cell selected through a cell reselection (cell selection) procedure.

As an embodiment, the first target cell includes a PCell (primary cell).

As an embodiment, the first candidate cell set includes a CHO (conditional handover) candidate cell list.

As an embodiment, the first candidate cell set includes MCG (master cell group).

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

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application are intended to be included within the scope of the present application.

Claims

1. A first node for wireless communication, comprising:

a first transmitter that transmits second signaling when the first target cell does not belong to the first candidate cell set, the second signaling including a first message; transmitting third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message;

wherein the first message is used to determine whether a radio link failure related message exists.

2. The first node of claim 1, comprising:

the first receiver receives a second message;

The first transmitter transmitting a third set of information;

3. The first node of claim 2, comprising:

the first transmitter transmits a fourth signaling;

the first receiver receives fifth signaling;

wherein the fifth signaling is used to trigger the second signaling.

4. The first node of claim 1, wherein the radio link failure related message is generated in response to the determination of a radio connection failure.

5. The first node of claim 4, wherein the radio link failure related message is cleared; wherein the first target cell is one candidate cell in the first set of candidate cells.

6. The first node according to any of claims 1-5, characterized in that the first signaling indicates a first condition and a first configuration, the first configuration being associated to the first target cell, the first target cell satisfying the first condition being used for triggering application of the first configuration.

7. The first node according to any of claims 2, 3 and 6, characterized in that the first sub information block comprises a first identity and the first condition, the first identity being used to indicate the first target cell.

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

the first transmitter transmits a sixth signaling, wherein the sixth signaling is used for indicating the MCG to generate wireless connection failure;

wherein the signaling radio bearer carrying the sixth signaling includes split SRB1, or the signaling radio bearer carrying the sixth signaling includes SRB3 (signalradio bearer 3); the sixth signaling includes an mcgfailurenformation message.

9. The first node according to any of claims 1-8, characterized in that the radio link failure related message is cleared after MCG radio connection failure is detected for more than 48 hours.

10. The first node according to claim 8 or 9, characterized in that the first signaling is used to configure for MCG failure recovery; the first signaling is triggered by the sixth signaling; the sentence the first signaling indicates that the first set of candidate cells includes the following meanings: the first signaling is used to configure for the first set of candidate cells.

11. The first node according to any of claims 1 to 10, wherein the first signaling comprises an rrcrecon configuration message, or wherein the first signaling comprises an rrcconnectionreconfigurationmessage, or wherein the first signaling comprises a DLInformationTransferMRDC message.

12. The first node according to any of claims 1 to 11, characterized in that the second signaling is used to confirm that the RRC connection re-establishment was successfully completed; the second signaling includes an RRCReestablishmentComplete message or the second signaling includes an rrcconnectionreestishmentcomplete message.

13. The first node according to any of claims 1 to 12, characterized in that the third signaling is used to confirm that the RRC connection reconfiguration was successfully completed; the third signaling includes an RRCConnectionReconfigurationComplete message, or the third signaling includes an rrcrecnonfigurationcomplete message.

14. The first node according to any of claims 1 to 13, characterized in that the second message comprises a ueinfomation request message; the third information set includes a ueinfo information response message.

15. The first node of any of claims 1-14, wherein the fourth signaling comprises a rrcreestablischentrequest message and the fifth signaling comprises a rrcreestablischent message; alternatively, the fourth signaling includes an rrcconnectionreestistablentrequest message and the fifth signaling includes an rrcconnectionreestiblentrequest message.

16. The first node according to any of claims 1 to 15, wherein the radio link failure related message is stored in a VarRLF-Report; the phrase generating the radio link failure related message includes the following meanings: storing the radio link failure related message to the VarRLF-Report; the radio connection failure includes a radio link failure; the first message includes rlf-infoaavailable.

17. A second node for wireless communication, comprising:

a second receiver that receives second signaling when the first target cell does not belong to the first set of candidate cells, the second signaling including the first message; receiving third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message;

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

when the first target cell does not belong to the first candidate cell set, sending second signaling, wherein the second signaling comprises a first message; transmitting third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message;

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

receiving second signaling when the first target cell does not belong to the first candidate cell set, wherein the second signaling comprises a first message; receiving third signaling when the first target cell is one candidate cell in the first set of candidate cells, the third signaling not including the first message;