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

Abstract

The present application discloses a method and apparatus in a communication node used for wireless communication. The communication node determines that a wireless connection failure occurs in a first cell; when a second cell is in a first state, as a response to determining that the wireless connection failure occurs in the first cell, the second cell is determined to enter a third state and send a first message; when the second cell is in a second state, as a response to determining that the wireless connection failure occurs in the first cell, a second message is sent; when the second cell is in a third state, as a response to determining that the wireless connection failure occurs in the first cell, the first message is sent; the first message is used for wireless connection recovery; the second message is used for wireless connection re-establishment; when the second cell is in the first state, control signaling is not monitored on the second cell; when the second cell is in the third state, the control signaling is monitored on the second cell.

Description

Technical Field

[0001] The present application relates to a transmission method and device in a wireless communication system, and in particular to a dual-connection transmission method and device. Background Art

[0002] Release 16 studied the MCG (Master Cell Group) Fast Recovery (Fast MCG Recovery) in the "Ehanced Dual Connectivity and Carrier Aggregation, eDCCA" work item (WI), supporting the recovery of the MCG link through the SCG (Secondary Cell Group) after the MCG RLF (Radio Link Failure). Release 17 supports an effective SCG activation (Activation) / deactivation (De-activation) mechanism for the "Multi-Radio Dual-Connectivity (MR-DC) Enhancements" work item. Summary of the invention

[0003] When RLF occurs in MCG, if certain conditions are met, link recovery can be performed through SCG without triggering RRC (Radio Resource Control) connection reestablishment. After the introduction of SCG activation / deactivation mechanism, it is necessary to enhance how to support MCG fast recovery when SCG is in deactivated state.

[0004] In view of the above problems, this application provides a solution. In the description of the above problems, the terrestrial network (TN) scenario is used as an example; this application is also applicable to scenarios such as non-terrestrial networks (NTN) to achieve similar technical effects in terrestrial transmission scenarios. In addition, the use of a unified solution for different scenarios also helps reduce hardware complexity and costs.

[0005] As an embodiment, the interpretation of the terminology in the present application refers to the definition of the TS36 series of specification protocols of 3GPP (the 3rd Generation Partnership Project).

[0006] As an example, the interpretation of the terms in the present application refers to the definitions of the TS38 series of specification protocols of 3GPP.

[0007] As an example, the interpretation of the terms in the present application refers to the definitions of the TS37 series of specification protocols of 3GPP.

[0008] As an embodiment, the interpretation of the terms in this application refers to the definition of the standard protocol of IEEE (Institute of Electrical and Electronics Engineers).

[0009] It should be noted that, in the absence of conflict, the embodiments and features in any node of the present application can be applied to any other node. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other.

[0010] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0011] Determining that a wireless connection failure occurs in the first cell;

[0012] When the second cell is in the first state, as a response to determining that the radio connection failure occurs in the first cell, determining that the second cell enters the third state, and sending a first message; when the second cell is in the second state, as a response to determining that the radio connection failure occurs in the first cell, sending a second message; when the second cell is in the third state, as a response to determining that the radio connection failure occurs in the first cell, sending the first message;

[0013] The first message is used for wireless connection recovery; the second message is used for wireless connection re-establishment; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; when the second cell is in the third state, the first node monitors the control signaling on the second cell.

[0014] As an embodiment, the problem to be solved by the present application includes: when RLF occurs in a first cell, if a second cell is in a dormant state, whether the link of the first cell can be recovered through the second cell.

[0015] As an embodiment, the problem to be solved by the present application includes: when RLF occurs in the first cell and the second cell is in a dormant state, how to activate the second cell.

[0016] As an embodiment, the problem to be solved by the present application includes: when RLF occurs in the first cell, if the second cell is in a dormant state, whether the MCG Failure Information process can be executed.

[0017] As an embodiment, the problem to be solved by the present application includes: when RLF occurs in the first cell, if the second cell is in a dormant state, how to avoid performing RRC connection re-establishment.

[0018] As an embodiment, the characteristics of the above method include: when RLF occurs in the first cell, if the second cell is in a dormant state, the second cell is first activated, and then the MCG Failure Information process is performed.

[0019] As an embodiment, the characteristics of the above method include: the UE controls the second cell to be activated from a dormant state.

[0020] As an embodiment, the benefits of the above method include: improving reliability.

[0021] As an embodiment, the benefits of the above method include: improving robustness.

[0022] As an embodiment, the benefits of the above method include: avoiding triggering RRC connection re-establishment.

[0023] According to one aspect of the present application, it is characterized in that the behavior of determining that the second cell enters the third state includes restoring the radio bearer between the second cell and the second cell.

[0024] According to one aspect of the present application, it is characterized in that the behavior determines that the second cell enters the third state includes:

[0025] Sending a first wireless signal;

[0026] The first wireless signal is used to trigger the second cell to enter a third state.

[0027] According to one aspect of the present application, it is characterized in that the behavior determines that the second cell enters the third state includes:

[0028] receiving a second wireless signal;

[0029] The second wireless signal is used to trigger the second cell to enter a third state.

[0030] According to one aspect of the present application, it is characterized by comprising:

[0031] receiving a first signaling;

[0032] The first signaling is used to instruct the second cell to enter the first state.

[0033] According to one aspect of the present application, it is characterized by comprising:

[0034] receiving a second signaling;

[0035] When a first condition set is met, start a first timer; during the operation of the first timer, convert the second cell to the third state and stop the first timer; when the first timer expires, initiate an RRC connection re-establishment process;

[0036] The second signaling includes a first expiration value, and the first expiration value is used to determine the maximum running time of the first timer.

[0037] According to one aspect of the present application, it is characterized by comprising:

[0038] receiving a third signaling;

[0039] The third signaling is used to indicate whether the second cell enters the third state from the first state.

[0040] The present application discloses a method in a second type node used for wireless communication, characterized by comprising:

[0041] When the second cell is in the first state, as a response to the first cell being determined to have a radio connection failure, determining that the second cell enters a third state, and receiving a first message; when the second cell is in the second state, receiving a second message as a response to the first cell being determined to have a radio connection failure; when the second cell is in the third state, receiving the first message as a response to the first cell being determined to have a radio connection failure;

[0042] The first message is used for wireless connection recovery; the second message is used for wireless connection re-establishment; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; when the second cell is in the third state, the first node monitors the control signaling on the second cell.

[0043] According to one aspect of the present application, it is characterized in that the behavior of determining that the second cell enters the third state includes restoring the radio bearer between the sender of the first message and the second cell.

[0044] According to one aspect of the present application, it is characterized in that the behavior determines that the second cell enters the third state includes:

[0045] receiving a first wireless signal;

[0046] The first wireless signal is used to trigger the second cell to enter a third state.

[0047] According to one aspect of the present application, it is characterized in that the behavior determines that the second cell enters the third state includes:

[0048] sending a second wireless signal;

[0049] The second wireless signal is used to trigger the second cell to enter a third state.

[0050] According to one aspect of the present application, it is characterized by comprising:

[0051] Sending a first signaling;

[0052] The first signaling is used to instruct the second cell to enter the first state.

[0053] According to one aspect of the present application, it is characterized by comprising:

[0054] Sending a second signaling;

[0055] The second signaling includes a first expiration value, which is used to determine the maximum operating time of a first timer; when a first set of conditions is met, the first timer is started; during the operation of the first timer, the second cell is converted to the second state and the first timer is stopped; when the first timer expires, the RRC connection re-establishment process is initiated.

[0056] According to one aspect of the present application, it is characterized by comprising:

[0057] Sending a third signaling;

[0058] The third signaling is used to indicate whether the second cell enters the third state from the first state.

[0059] The present application discloses a first node used for wireless communication, characterized in that it includes:

[0060] The first receiver determines that a wireless connection failure occurs in the first cell;

[0061] The first transmitter determines, when the second cell is in the first state, as a response to determining that the radio connection failure occurs in the first cell, that the second cell enters a third state and sends a first message; when the second cell is in the second state, as a response to determining that the radio connection failure occurs in the first cell, sends a second message; when the second cell is in the third state, as a response to determining that the radio connection failure occurs in the first cell, sends the first message;

[0062] The first message is used for wireless connection recovery; the second message is used for wireless connection re-establishment; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; when the second cell is in the third state, the first node monitors the control signaling on the second cell.

[0063] The present application discloses a second type of node used for wireless communication, characterized in that it includes:

[0064] The second type of receiver, when the second cell is in the first state, determines that the second cell enters the third state as a response to the first cell being determined to have a wireless connection failure, and receives the first message; when the second cell is in the second state, receives the second message as a response to the first cell being determined to have a wireless connection failure; when the second cell is in the third state, receives the first message as a response to the first cell being determined to have a wireless connection failure;

[0065] The first message is used for wireless connection recovery; the second message is used for wireless connection re-establishment; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; when the second cell is in the third state, the first node monitors the control signaling on the second cell.

[0066] As an embodiment, compared with the traditional solution, this application has the following advantages:

[0067] -. Improve reliability;

[0068] -. Improve robustness;

[0069] -.Avoid triggering RRC connection re-establishment. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0071] Figure 1A flow chart showing the transmission of a first message and a second message according to an embodiment of the present application;

[0072] Figure 2 A schematic diagram of a network architecture according to an embodiment of the present application is shown;

[0073] Figure 3 A schematic diagram showing an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0074] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0075] Figure 5 A flow chart showing wireless signal transmission according to an embodiment of the present application is shown;

[0076] Figure 6 A wireless signal transmission flow chart according to another embodiment of the present application is shown;

[0077] Figure 7 A wireless signal transmission flow chart according to another embodiment of the present application is shown;

[0078] Figure 8 A transmission flow chart of the second signaling and the third signaling according to an embodiment of the present application is shown;

[0079] Fig. 9 A schematic diagram showing a behavior of a first node when a second cell is in different states according to an embodiment of the present application;

[0080] Fig.10 A schematic diagram showing a first field used to indicate a reason for sending a first wireless signal according to an embodiment of the present application;

[0081] Fig.11 A schematic diagram showing a first bitmap according to an embodiment of the present application being used to indicate a state of a second cell;

[0082] Fig.12 A schematic diagram showing a first node being connected to a second node and a third node simultaneously according to an embodiment of the present application;

[0083] Fig.13 A structural block diagram of a processing device used in a first node according to an embodiment of the present application is shown;

[0084] Fig.14 A structural block diagram of a processing device used in a second type of node according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0085] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily.

[0086] Example 1

[0087] Embodiment 1 illustrates a flowchart of the transmission of a first message and a second message according to an embodiment of the present application, as shown in the attached Figure 1 Attached Figure 1 In the figure, each box represents a step. It should be emphasized that the order of the boxes in the figure does not represent the temporal relationship between the steps represented.

[0088] In Example 1, the first node in the present application determines in step 101 that a wireless connection failure occurs in the first cell; in step 102, when the second cell is in the first state, as a response to determining that the wireless connection failure occurs in the first cell, the second cell is determined to enter the third state, and a first message is sent; when the second cell is in the second state, as a response to determining that the wireless connection failure occurs in the first cell, a second message is sent; when the second cell is in the third state, as a response to determining that the wireless connection failure occurs in the first cell, the first message is sent; wherein the first message is used for wireless connection recovery; the second message is used for wireless connection re-establishment; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; when the second cell is in the third state, the first node monitors the control signaling on the second cell.

[0089] As an embodiment, the action of determining that a radio connection failure occurs in the first cell includes: determining that a radio connection failure occurs between the first node and the first cell.

[0090] As an embodiment, the action of determining that a radio connection failure occurs in the first cell includes: considering that the radio connection failure is detected for the first cell.

[0091] As an embodiment, the wireless connection failure includes a radio link failure (Radio Link Failure, RLF).

[0092] As an embodiment, the wireless connection failure includes a handover failure (Handover Failure, HOF).

[0093] As a sub-embodiment of this embodiment, the handover failure includes a conditional handover (CHO) failure.

[0094] As a sub-embodiment of this embodiment, the switching failure includes a conventional switching failure.

[0095] As a sub-embodiment of this embodiment, the switching failure includes a dual active protocol stack (Dual Active Protocol Stack, DAPS) switching failure.

[0096] As an embodiment, when the action determines that a wireless connection failure occurs in the first cell, a DAPS (Dual Active Protocol Stack) bearer is not configured.

[0097] As an embodiment, the first node determines that the wireless connection fails based on wireless measurement.

[0098] As a sub-embodiment of this embodiment, the wireless measurement is for the first cell.

[0099] As a sub-embodiment of this embodiment, the wireless measurement includes measuring at least one of {synchronization signal (Synchronization Signal), cell-specific reference signal (Cell-specific Reference Signal, CRS), SS-RS (Synchronization Signal Reference Signal, synchronization reference signal), SSB (Synchronization Signal Block, synchronization signal block), primary synchronization signal (Primary Synchronization Signal), secondary synchronization signal (Secondary Synchronization Signal, SSS), SS (Synchronization Signal) / PBCH (Physical Broadcast Channel, physical broadcast channel) block (Block), channel state indication reference signal (Channel State Information Reference Signal, CSI-RS), cell-common physical downlink control channel (Physical Downlink Control Channel, PDCCH), PBCH}.

[0100] As an embodiment, when the timer (Timer) T310 in the first cell expires (Expiry), it is determined that the radio connection failure occurs in the first cell.

[0101] As an embodiment, when the timer T312 of the first cell expires, it is determined that the radio connection failure occurs in the first cell.

[0102] As an embodiment, when a random access (RA) problem indication is received from MCG MAC (Medium Access Control) and timers T300, T301, T304, T311 and T319 are not running, it is determined that the wireless connection failure occurs in the first cell.

[0103] As an embodiment, when an indication of reaching the maximum number of retransmissions is received from MCG (Master Cell Group) RLC (Radio Link Control), it is determined that the radio connection failure occurs in the first cell.

[0104] As an embodiment, if the connection is performed as an IAB (Integrated Access and Backhaul) node, when the BAP entity receives a BH RLF indication from the MCG, it is determined that the radio connection failure occurs in the first cell.

[0105] As an embodiment, when the timer T304 is not running and a continuous uplink LBT (Listen Before Talk) failure indication is received from the MCG MAC, it is determined that the radio connection failure occurs in the first cell.

[0106] As an embodiment, when the timer T304 expires, it is determined that the radio connection failure occurs in the first cell.

[0107] As an embodiment, when an indication of the maximum number of retransmissions reaching an SRB (Signaling Radio Bearer) or DRB (Data Radio Bearer) is received from the MCG RLC, it is determined that a radio connection failure occurs in the first cell.

[0108] As an embodiment, when a random access problem indication is received from the MCG MAC and timers T300, T301, T304 and T311 are not running, it is determined that a radio connection failure occurs in the first cell.

[0109] As an embodiment, the first cell includes a serving cell (Serving Cell).

[0110] As an embodiment, the first cell includes a special cell (Special Cell, SPCell).

[0111] As a sub-embodiment of this embodiment, the special cell includes a primary cell (Primary Cell, PCell).

[0112] As a subsidiary embodiment of this sub-embodiment, the primary cell includes MCG.

[0113] As a subsidiary embodiment of this sub-embodiment, the maintaining base station of the primary cell includes a master node (Master Node, MN).

[0114] As a sub-embodiment of this embodiment, the special cell includes a primary and secondary cell (Primary SCG Cell, PSCell).

[0115] As a subsidiary embodiment of this sub-embodiment, the primary and secondary cells include a SCG (Secondary Cell Group).

[0116] As a subsidiary embodiment of this sub-embodiment, the maintaining base station of the primary cell includes a secondary node (SN).

[0117] As an embodiment, the first cell includes a secondary cell.

[0118] As an embodiment, the first cell does not include a secondary cell.

[0119] As an embodiment, the first cell is a cell in an MCG.

[0120] As an embodiment, the second cell includes a service cell.

[0121] As an embodiment, the second cell includes a special cell.

[0122] As an embodiment, the second cell includes a secondary cell.

[0123] As an embodiment, the second cell does not include a secondary cell.

[0124] As an embodiment, the second cell is a cell in the SCG.

[0125] As an embodiment, the first cell includes an MCG, and the second cell includes an SCG.

[0126] As an embodiment, the first cell includes a PCell, and the second cell includes a PSCell.

[0127] As an embodiment, the first cell includes an SCG, and the second cell includes an MCG.

[0128] As an embodiment, the first cell includes a PSCell, and the second cell includes a PCell.

[0129] As an embodiment, the first cell and the second cell are both service cells of the first node.

[0130] As an embodiment, the first node maintains connection with the first cell and the second cell through dual connection.

[0131] As an embodiment, the first state is for the second cell.

[0132] As an embodiment, the first state is for the cell group where the second cell is located, and the cell group includes SCG or MCG.

[0133] As an embodiment, the first state includes a dormancy state.

[0134] As an embodiment, the first state includes a deep dormancy state.

[0135] As an embodiment, the first state includes a DRX (Discontinuous Reception) state.

[0136] As an embodiment, the first state includes a deactivated state.

[0137] As an embodiment, the first state includes an inactive state.

[0138] As an embodiment, the first state includes a suspended state.

[0139] As a sub-embodiment of this embodiment, the meaning of suspending includes pausing.

[0140] As a sub-embodiment of this embodiment, the meaning of suspending includes Suspend.

[0141] As an embodiment, the first state includes an SCG deactivation state.

[0142] As an embodiment, the first state includes the SCG inactivation state.

[0143] As an embodiment, the first state includes the SCG dormant state.

[0144] As an embodiment, the first state includes an SCG suspended state.

[0145] As an embodiment, the first state includes an RRC_INACTIVE state.

[0146] As an embodiment, when the second cell is in the first state, the first node does not monitor the PDCCH for the second cell.

[0147] As an embodiment, when the second cell is in the first state, the first node performs RLM (Radio Link Monitor) measurement for the second cell.

[0148] As an embodiment, the first state includes that no RLF occurs in the second cell.

[0149] As an embodiment, the first state includes that the SCG is not detected to have RLF.

[0150] As an embodiment, the first state includes that no synchronous reconfiguration failure occurs in the SCG.

[0151] As an embodiment, the first state includes that no configuration failure occurs in the SCG.

[0152] As an embodiment, the first state includes that the SCG has no low-layer integrity check failure indication regarding SRB3 (Signalling Radio Bearer 3).

[0153] As an embodiment, the first state belongs to the CM_CONNECTED state.

[0154] As an embodiment, the first cell belongs to the RRC connected state (RRC_CONNECTED).

[0155] As an embodiment, when the second cell is in the first state, the first cell is in an RRC connected state (RRC_CONNECTED).

[0156] As an embodiment, when the second cell of the first node is in the first state, the behavior of the first node includes several first-type behaviors.

[0157] As a sub-embodiment of this embodiment, the first type of behavior includes not monitoring the PDCCH for the second cell.

[0158] As a sub-embodiment of this embodiment, the first type of behavior includes not performing uplink transmission for the second cell.

[0159] As a sub-embodiment of this embodiment, the first type of behavior includes not performing CSI measurement for the second cell.

[0160] As a sub-embodiment of this embodiment, the first type of behavior includes not reporting the CSI of the second cell.

[0161] As a sub-embodiment of this embodiment, the first type of behavior includes retaining the RRC configuration for the second cell.

[0162] As a sub-embodiment of this embodiment, the first type of behavior includes performing RLM measurement on the second cell.

[0163] As a sub-embodiment of this embodiment, the first type of behavior includes performing CSI measurement for the second cell.

[0164] As a sub-embodiment of this embodiment, the first type of behavior includes performing RRM (Radio Resource Management) measurements on the second cell.

[0165] As a sub-embodiment of this embodiment, the first type of behavior includes suspending the SRB for the second cell.

[0166] As a sub-embodiment of this embodiment, the first type of behavior includes suspending a DRB (Data Radio Bearer) for the second cell.

[0167] As a sub-embodiment of this embodiment, the first type of behavior includes continuing beam management (BM) for the second cell.

[0168] As a sub-embodiment of this embodiment, the first type of behavior includes not performing random access in the second cell.

[0169] As a sub-embodiment of this embodiment, the first type of behavior includes performing random access in the second cell.

[0170] As a sub-embodiment of this embodiment, the first type of behavior includes not sending an SRS (Sounding Reference Signal) in the second cell.

[0171] As a sub-embodiment of this embodiment, the first type of behavior includes not sending UL-SCH (Uplink Shared CHannel) in the second cell.

[0172] As a sub-embodiment of this embodiment, the first type of behavior includes not sending a PUCCH (Physical Uplink Control Channel) in the second cell.

[0173] As a sub-embodiment of this embodiment, the plurality of first-category behaviors include T1 first-category behaviors, where T1 is a positive integer.

[0174] As a sub-embodiment of this embodiment, the several first-category behaviors include all the first-category behaviors in this application.

[0175] As a sub-embodiment of this embodiment, the several first-category behaviors include some of the first-category behaviors in this application.

[0176] As an embodiment, when the second cell is in the first state, the first node performs channel measurement on the second cell.

[0177] As a sub-embodiment of this embodiment, the channel measurement includes RSRP (Reference Signal Received Power) measurement.

[0178] As a sub-embodiment of this embodiment, the channel measurement includes RSRQ (Reference Signal Received Quality) measurement.

[0179] As a sub-embodiment of this embodiment, the channel measurement includes SINR (Signal to Interference plus Noise Ratio) measurement.

[0180] As a sub-embodiment of this embodiment, the channel measurement includes CSI (Channel State Information) measurement.

[0181] As a sub-embodiment of this embodiment, the channel measurement includes downlink synchronization measurement.

[0182] As an embodiment, the phrase as a response to determining that the radio connection failure occurs in the first cell includes: when the radio connection failure occurs in the first cell.

[0183] As an embodiment, the phrase as a response to determining that the wireless connection failure occurs in the first cell includes: as a next step action of determining that the wireless connection failure occurs in the first cell.

[0184] As an embodiment, the phrase as a response to determining that the radio connection failure occurs in the first cell includes: as feedback of determining that the radio connection failure occurs in the first cell.

[0185] As an embodiment, the action of determining that the second cell enters the third state includes: converting the second cell from the first state to the third state.

[0186] As an embodiment, the action of determining that the second cell enters the third state includes: judging that the second cell satisfies a condition for the second cell to enter the third state.

[0187] As an embodiment, the third state is for the second cell.

[0188] As an embodiment, the third state is for the cell group where the second cell is located.

[0189] As an embodiment, the third state includes normal PSCell operation.

[0190] As an embodiment, the third state includes a connection state.

[0191] As an embodiment, the third state includes an active state.

[0192] As an embodiment, the third state is not a DRX state.

[0193] As an embodiment, the third state includes an activated state.

[0194] As an embodiment, the third state is not a suspended state.

[0195] As an embodiment, when the second cell is in the third state, the first node sends an SRS in the second cell.

[0196] As an embodiment, when the second cell is in the third state, the first node reports CSI for the second cell.

[0197] As an embodiment, when the second cell is in the third state, the first node monitors the PDCCH in the second cell.

[0198] As an embodiment, when the second cell is in the third state, the first node monitors the PDCCH for the second cell.

[0199] As an embodiment, when the second cell is in the third state, if the PUCCH for the second cell is configured, the first node sends the PUCCH in the second cell.

[0200] As an embodiment, the third state includes that all SRBs and all DRBs of the second cell are not suspended.

[0201] As an embodiment, the third state includes that all SRBs and all DRBs of the second cell are not suspended.

[0202] As an embodiment, the third state includes that the SRB of the second cell is available.

[0203] As an embodiment, the third state includes that the SRB of the second cell is established.

[0204] As an embodiment, the third state includes that the SRB of the second cell is restored.

[0205] As an embodiment, the third state includes that the DRB of the second cell is restored.

[0206] As an embodiment, the third state includes a PSCell change (Change) not being in progress (Ongoing).

[0207] As an embodiment, the third state includes that the timer T304 of the second cell is not running.

[0208] As an embodiment, the third state includes that the timer T307 of the second cell is not running.

[0209] As an embodiment, the third state includes that the SCG is not detected to have RLF.

[0210] As an embodiment, the third state includes that no synchronous reconfiguration failure occurs in the SCG.

[0211] As an embodiment, the third state includes that no configuration failure occurs in the SCG.

[0212] As an embodiment, the third state includes that the SCG has no low-layer integrity check failure indication regarding SRB3.

[0213] As an embodiment, the third state includes performing a PSCell change.

[0214] As an embodiment, the phrase that the first message is used for wireless connection recovery includes: the first message is used to initiate the wireless connection recovery.

[0215] As an embodiment, the phrase that the first message is used for wireless connection recovery includes: the first message is used to determine the execution of the wireless connection recovery process.

[0216] As an embodiment, the phrase that the first message is used for wireless connection recovery includes: when it is determined to perform the wireless connection recovery, sending the first message.

[0217] As an embodiment, the wireless connection recovery includes CHO.

[0218] As an embodiment, the wireless connection recovery includes restoring the MCG link through the SCG.

[0219] As an embodiment, the wireless connection recovery includes an MCG Failure Information process.

[0220] As an embodiment, the wireless connection recovery includes restoring the RRC connection of the MCG.

[0221] As an embodiment, the recipient of the second message includes a base station maintaining the second cell.

[0222] As an embodiment, the first message is transmitted via an air interface.

[0223] As an embodiment, the first message is transmitted via a wireless interface.

[0224] As an embodiment, the first message is transmitted via high-layer signaling.

[0225] As an embodiment, the first message includes higher layer signaling.

[0226] As an embodiment, the first message includes all or part of the high-level signaling.

[0227] As an embodiment, the first message includes an RRC message.

[0228] As an embodiment, the first message includes all or part of the IE (Information Element) of the RRC message.

[0229] As an embodiment, the first message includes all or part of a field (Field) in an IE of an RRC message.

[0230] As an embodiment, the first message includes an uplink (Uplink, UL) signaling.

[0231] As an embodiment, the signaling radio bearer of the first message includes SRB1.

[0232] As an embodiment, the signaling radio bearer of the first message includes SRB3.

[0233] As an embodiment, the logical channel carrying the first message includes a DCCH (Dedicated Control Channel).

[0234] As an embodiment, the first message includes a MCGFailureInformation message.

[0235] As an embodiment, the first message includes a FailureInformation2 message.

[0236] As an embodiment, the first message includes a MCGFailureInformationEUTRA message.

[0237] As an embodiment, the first message includes a MCGFailureInformationNR message.

[0238] As an embodiment, the first message includes a SCGFailureInformation message.

[0239] As an embodiment, the first message includes a SCGFailureInformationNR message.

[0240] As an embodiment, the first message includes a SCGFailureInformationEUTRA message.

[0241] As an embodiment, the first message includes a SidelinkUEInformation message.

[0242] As an embodiment, the first message includes a SidelinkUEInformationNR message.

[0243] As an embodiment, the first message includes a SidelinkUEInformationEUTRA message.

[0244] As an embodiment, the first message includes a FailureInformation message.

[0245] As an embodiment, the first message includes a ULInformationTransferMRDC message.

[0246] As an embodiment, the first message includes a measurement report.

[0247] As an embodiment, the first message includes a ULInformationTransferMRDC message, and the ULInformationTransferMRDC message includes a MCGFailureInformation message.

[0248] As an embodiment, the first message includes a MCGFailureInformation message, and the MCGFailureInformation message is transmitted via SRB1.

[0249] As an embodiment, the first message includes a ULInformationTransferMRDC message, and the ULInformationTransferMRDC message is transmitted via SRB3.

[0250] As an embodiment, the first message is sent after the behavior determines that the second cell enters a third state.

[0251] As an embodiment, the first message is sent during the process of the behavior determining that the second cell enters the third state.

[0252] As an embodiment, the first message is sent on the second cell.

[0253] As an embodiment, the first message is sent in a cell in an SCG, and the SCG includes the second cell.

[0254] As an embodiment, the second state is for the second cell.

[0255] As an embodiment, the second state includes RLF.

[0256] As an embodiment, the second state includes an SCG suspension state.

[0257] As an embodiment, the second state includes the wireless connection failure occurring in the second cell.

[0258] As an embodiment, the second state includes that the cell group where the second cell is located is suspended.

[0259] As an embodiment, the second state includes failure of synchronous reconfiguration (reconfiguration with sync) of the cell group where the second cell is located.

[0260] As an embodiment, the second state includes a failure in changing the cell group to which the second cell belongs.

[0261] As an embodiment, the second state includes a configuration failure of the cell group where the second cell is located.

[0262] As an embodiment, the second state includes receiving an integrity check failure indication regarding SRB3 from a lower layer of the cell group where the second cell is located.

[0263] As an embodiment, the second state includes that the second cell is performing a PSCell change.

[0264] As an embodiment, in the second state, all SRB(s) and DRB(s) of the second cell are suspended (Suspend).

[0265] As an embodiment, in the second state, the MAC of the second cell is reset.

[0266] As an embodiment, in the second state, the timer T304 in the second cell is stopped.

[0267] As an embodiment, in the second state, if CPC (Conditional PSCellChange) is configured, CPC conditional reconfiguration evaluation is stopped.

[0268] As an embodiment, when the second cell is in the second state, the first node does not perform the channel measurement on the second cell.

[0269] As an embodiment, the phrase that the second message is used for wireless connection re-establishment includes: the second message is used to request RRC connection (Connection) re-establishment.

[0270] As an embodiment, the phrase that the second message is used for wireless connection re-establishment includes: the second signal is used to initiate wireless connection re-establishment.

[0271] As an embodiment, the phrase that the second message is used for wireless connection reestablishment includes: the second message is sent during the connection reestablishment process.

[0272] As an embodiment, the phrase that the second message is used for wireless connection re-establishment includes: when it is determined to perform the wireless connection re-establishment, sending the second message.

[0273] As an embodiment, the recipient of the second message includes the first base station.

[0274] As a sub-embodiment of this embodiment, the first node performs cell selection to determine the first base station.

[0275] As a sub-embodiment of this embodiment, the first base station is the same as the maintaining base station of the first cell.

[0276] As a sub-embodiment of this embodiment, the first base station is different from the maintaining base station of the first cell.

[0277] As a sub-embodiment of this embodiment, the first base station is the same as the maintaining base station of the second cell.

[0278] As a sub-embodiment of this embodiment, the first base station is different from the maintaining base station of the second cell.

[0279] As an embodiment, the second message is transmitted via an air interface.

[0280] As an embodiment, the second message is transmitted via a wireless interface.

[0281] As an embodiment, the second message is transmitted via high-layer signaling.

[0282] As an embodiment, the second message includes higher layer signaling.

[0283] As an embodiment, the second message includes all or part of the high-layer signaling.

[0284] As an embodiment, the second message includes an RRC message.

[0285] As an embodiment, the second message includes all or part of the IE of the RRC message.

[0286] As an embodiment, the second message includes all or part of the fields in an IE of the RRC message.

[0287] As an embodiment, the second message includes an uplink (Uplink, UL) signaling.

[0288] As an embodiment, the signaling radio bearer of the second message includes SRB0.

[0289] As an embodiment, the logical channel carrying the second message includes CCCH (Common Control Channel).

[0290] As an embodiment, the second message includes an RRCReestablishmentRequest message.

[0291] As an embodiment, the second message includes an RRCConnectionReestablishmentRequest message.

[0292] As an embodiment, the phrase that the first node does not monitor control signaling on the second cell includes: the first node does not monitor the control signaling for the second cell.

[0293] As an embodiment, the phrase "the first node does not monitor control signaling on the second cell" includes: the first node does not monitor the control signaling sent by the second cell.

[0294] As an embodiment, the phrase the first node monitors the control signaling on the second cell includes: the first node monitors the control signaling for the second cell.

[0295] As an embodiment, the phrase "the first node monitors the control signaling on the second cell" includes: the first node monitors the control signaling sent by the second cell.

[0296] As an embodiment, the monitoring control signaling includes: monitoring the control signaling.

[0297] As an embodiment, the monitoring of control signaling includes: detecting whether the control signaling exists on a channel occupied by the control signaling.

[0298] As an embodiment, the monitoring includes CRC (Cyclic Redundancy Check) check.

[0299] As an embodiment, the monitoring includes blind detection.

[0300] As an embodiment, the monitoring includes coherent detection of the characteristic sequence.

[0301] As an embodiment, the control signaling includes DCI.

[0302] As an embodiment, the control signaling includes UCI.

[0303] As an embodiment, the control signaling includes PDCCH.

[0304] As an embodiment, the control signaling includes PUCCH.

[0305] As an embodiment, the channel occupied by the control signaling includes PDCCH.

[0306] As an embodiment, the channel occupied by the control signaling includes PUCCH.

[0307] As an embodiment, it is determined that a wireless connection failure occurs in the first cell; when the second cell is in the first state and when a first set of conditions is met, as a response to determining that the wireless connection failure occurs in the first cell, the second cell is determined to enter a third state and a first message is sent.

[0308] As an embodiment, the first condition set includes M1 first-category conditions, where M1 is a positive integer.

[0309] As a sub-embodiment of this embodiment, the first type of condition includes the third signaling indicating that the second cell enters the third state from the first state.

[0310] As a sub-embodiment of this embodiment, the first type of condition includes that the third signaling indicates that the first node has the ability to transfer the second cell from the first state to the third state.

[0311] As a sub-embodiment of this embodiment, the first node determines to transfer the second cell from the first state to the third state.

[0312] As a sub-embodiment of this embodiment, the first type of condition includes that the second cell is in the first state.

[0313] As a sub-embodiment of this embodiment, the first type of condition includes the wireless connection failure occurring in the first cell.

[0314] As a sub-embodiment of this embodiment, the first type of condition includes that the first node is configured with splitSRB1.

[0315] As a sub-embodiment of this embodiment, the first type of condition includes that the first node is configured with SRB3.

[0316] As a sub-embodiment of this embodiment, the first type of conditions includes that the MCG is not suspended (Suspend).

[0317] As a sub-embodiment of this embodiment, the first type of conditions includes that the SCG is not suspended.

[0318] As a sub-embodiment of this embodiment, the first type of condition includes that a first timer is configured and the first timer is not running.

[0319] As a subsidiary embodiment of this sub-embodiment, the first timer includes T316.

[0320] As a subsidiary embodiment of this sub-embodiment, the first timer includes T310.

[0321] As a sub-embodiment of this embodiment, the M1 first-category conditions are all satisfied and are used to determine that the first condition set is satisfied.

[0322] As a sub-embodiment of this embodiment, the satisfaction of M2 first-category conditions among the M1 first-category conditions is used to determine that the first condition set is satisfied, and M2 is a positive integer not greater than M1.

[0323] As an embodiment, the first condition set is satisfied including that the first node can execute the MCGFailure Information process, and the second cell is in the first state.

[0324] As an embodiment, it is determined that a radio connection failure occurs in the first cell; when the second cell is in a third state and when a first condition set is satisfied, a first message is sent as a response to determining that the radio connection failure occurs in the first cell.

[0325] As an embodiment, it is determined that a radio connection failure occurs in the first cell; when the second cell is in the second state and when the first condition set is not satisfied, a second message is sent as a response to determining that the radio connection failure occurs in the first cell.

[0326] As a sub-embodiment of this embodiment, the first set of conditions not being met includes the SCG being detected as RLF.

[0327] As a sub-embodiment of this embodiment, the failure to satisfy the first set of conditions includes a synchronous reconfiguration failure of the SCG.

[0328] As a sub-embodiment of this embodiment, the failure to satisfy the first set of conditions includes a configuration failure of the SCG.

[0329] As a sub-embodiment of this embodiment, the first condition set is not met, including the SCG generating a low-layer integrity check failure indication regarding SRB3.

[0330] As a sub-embodiment of this embodiment, the first condition set not being satisfied includes performing a PSCell change.

[0331] As an embodiment, it is determined that a radio connection failure occurs in the first cell; when the second cell is in the second state, a second message is sent as a response to determining that the radio connection failure occurs in the first cell.

[0332] As an embodiment, the second cell being in a given state means: the second cell is in a given state with respect to the first node; the given state is the first state, or the second state, or the third state.

[0333] As an embodiment, the second cell being in a given state means: the second cell of the first node is in the given state; the given state is the first state, or the second state, or the third state.

[0334] As an embodiment, the second cell being in a given state means: the state of the second cell belongs to the given state; the given state is the first state, or the second state, or the third state.

[0335] As an embodiment, the second cell being in a given state means that: the first node performs the behavior of the given state for the second cell; the given state is the first state, or the second state, or the third state.

[0336] As an embodiment, the second cell being in a given state means that: the behavior of the first node in the first cell is in a given state; the given state is the first state, or the second state, or the third state.

[0337] Example 2

[0338] Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the attached Figure 2 Attached Figure 2A diagram of a network architecture 200 of a 5G NR (New Radio), LTE (Long-Term Evolution) and LTE-A (Long-Term Evolution Advanced) system is illustrated. The 5G NR or LTE network architecture 200 may be referred to as a 5G System (5G System) / 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) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet services 230. The 5GS / EPS may be interconnected 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 can be extended to networks providing circuit-switched services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol terminations toward UE 201. gNB 203 can be connected to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 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 (transmitting receiving node), or some other suitable term. gNB 203 provides an access point to 5GC / EPC 210 for UE 201. Examples of UE 201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop computer, a personal digital assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a drone, an aircraft, a narrowband Internet of Things device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similarly functional device.A person skilled in the art may also refer to 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 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 term. gNB203 is connected to 5GC / EPC210 via an S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF213. MME / AMF / SMF211 is the control node that handles the signaling between UE201 and 5GC / EPC210. ​​In general, MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocal) packets are transmitted through S-GW / UPF212, which itself is connected to P-GW / UPF213. P-GW provides UE IP address allocation and other functions. P-GW / UPF213 is connected to Internet services 230. Internet services 230 include operator-corresponding Internet protocol services, which may specifically include Internet, intranet, IMS (IP Multimedia Subsystem) and packet switching streaming services.

[0339] As an embodiment, the UE201 corresponds to the first node in the present application.

[0340] As an embodiment, the UE 201 supports transmission in a non-terrestrial network (NTN).

[0341] As an embodiment, the UE201 supports transmission in a network with a large delay difference.

[0342] As an embodiment, the UE 201 supports transmission of a terrestrial network (TN).

[0343] As an embodiment, the UE201 is a user equipment (UE).

[0344] As an embodiment, the UE 201 is an aircraft.

[0345] As an embodiment, the UE201 is a vehicle-mounted terminal.

[0346] As an embodiment, the UE 201 is a relay.

[0347] As an embodiment, the UE 201 is a vessel.

[0348] As an embodiment, the UE201 is an Internet of Things terminal.

[0349] As an embodiment, the UE201 is an industrial Internet of Things terminal.

[0350] As an embodiment, the UE201 is a device supporting low-latency and high-reliability transmission.

[0351] As an embodiment, the gNB203 corresponds to the second type of node in this application.

[0352] As an embodiment, the gNB203 supports transmission in a non-terrestrial network (NTN).

[0353] As an embodiment, the gNB203 supports transmission in a network with large latency difference.

[0354] As an embodiment, the gNB203 supports transmission of the terrestrial network (TN).

[0355] As an embodiment, the gNB203 is a macro cellular base station.

[0356] As an embodiment, the gNB203 is a micro cell base station.

[0357] As an embodiment, the gNB203 is a pico cell base station.

[0358] As an embodiment, the gNB203 is a home base station (Femtocell).

[0359] As an embodiment, the gNB203 is a base station device that supports large delay difference.

[0360] As an embodiment, the gNB203 is a flying platform device.

[0361] As an embodiment, the gNB203 is a satellite device.

[0362] As an embodiment, the gNB203 is a UE (user equipment).

[0363] As an embodiment, the gNB203 is a gateway.

[0364] Example 3

[0365] Embodiment 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in the attached Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3The radio protocol architecture for the control plane 300 is shown in three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to as PHY 301 herein. Layer 2 (L2 layer) 305 is above PHY 301 and includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets, and provides inter-zone mobility 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 various radio resources (e.g., resource blocks) in a 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 using RRC signaling to configure lower layers. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). In the user plane 350, the radio protocol architecture is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 also includes a SDAP (Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for mapping between QoS flows and data radio bearers (DRBs) to support service diversity.

[0366] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0367] As an example, Figure 3 The wireless protocol architecture in is applicable to the second type of node in this application.

[0368] As an embodiment, the first message in the present application is generated in the RRC306.

[0369] As an embodiment, the second message in the present application is generated in the RRC306.

[0370] As an embodiment, the first wireless signal in the present application is generated in the RRC306.

[0371] As an embodiment, the first wireless signal in the present application is generated by the MAC302 or MAC352.

[0372] As an embodiment, the first wireless signal in the present application is generated by the PHY301 or PHY351.

[0373] As an embodiment, the second wireless signal in the present application is generated in the RRC306.

[0374] As an embodiment, the second wireless signal in the present application is generated by the MAC302 or MAC352.

[0375] As an embodiment, the second wireless signal in the present application is generated by the PHY301 or PHY351.

[0376] As an embodiment, the first signaling in the present application is generated in the RRC306.

[0377] As an embodiment, the first signaling in the present application is generated by the MAC302 or MAC352.

[0378] As an embodiment, the first signaling in the present application is generated in the PHY301 or PHY351.

[0379] As an embodiment, the second signaling in the present application is generated in the RRC306.

[0380] As an embodiment, the third signaling in the present application is generated in the RRC306.

[0381] Example 4

[0382] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in the attached figure. Figure 4 shown. Figure 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

[0383] 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.

[0384] 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 .

[0385] In transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 layer. In transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0386] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any spatial stream destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program codes and data. The 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 multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

[0387] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, and implements L2 layer functions for user plane and control plane. The controller / processor 459 is also responsible for the retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0388] 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 reception 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 a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 storing program codes and data. The memory 476 can be referred to as a computer-readable medium. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the UE 450. Upper layer packets from controller / processor 475 may be provided to the core network.

[0389] As an embodiment, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor, and the first communication device 450 at least: determines that a wireless connection failure occurs in the first cell; when the second cell is in the first state, as a response to determining that the wireless connection failure occurs in the first cell, determines that the second cell enters a third state and sends a first message; when the second cell is in the second state, as a response to determining that the wireless connection failure occurs in the first cell, sends a second message; when the second cell is in the third state, as a response to determining that the wireless connection failure occurs in the first cell, sends the first message; wherein the first message is used for wireless connection recovery; the second message is used for wireless connection re-establishment; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; when the second cell is in the third state, the first node monitors the control signaling on the second cell.

[0390] As an embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates actions when executed by at least one processor, the actions including: determining that a wireless connection failure occurs in the first cell; when the second cell is in the first state, as a response to determining that the wireless connection failure occurs in the first cell, determining that the second cell enters a third state and sending a first message; when the second cell is in the second state, as a response to determining that the wireless connection failure occurs in the first cell, sending a second message; when the second cell is in the third state, as a response to determining that the wireless connection failure occurs in the first cell, sending the first message; wherein the first message is used for wireless connection recovery; the second message is used for wireless connection re-establishment; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; when the second cell is in the third state, the first node monitors the control signaling on the second cell.

[0391] As an embodiment, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The second communication device 410 at least: when the second cell is in the first state, as a response to the first cell being determined to have a radio connection failure, determines that the second cell enters a third state and receives a first message; when the second cell is in the third state, as a response to the first cell being determined to have a radio connection failure, receives the first message; wherein the first message is used for radio connection recovery; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; when the second cell is in the third state, the first node monitors the control signaling on the second cell.

[0392] As an embodiment, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The second communication device 410 at least: when the second cell is in the second state, as a response to the first cell being determined to have a wireless connection failure, receives a second message; the second message is used for wireless connection reestablishment.

[0393] As an embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates actions when executed by at least one processor, and the actions include: when the second cell is in the first state, as a response to the first cell being determined to have a wireless connection failure, determining that the second cell enters a third state and receiving a first message; when the second cell is in the third state, as a response to the first cell being determined to have a wireless connection failure, receiving the first message; wherein the first message is used for wireless connection recovery; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; when the second cell is in the third state, the first node monitors the control signaling on the second cell.

[0394] As an embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates an action when executed by at least one processor, the action including: the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 410 at least: when the second cell is in the second state, as a response to the first cell being determined to have a wireless connection failure, receives a second message; the second message is used for wireless connection reestablishment.

[0395] As an implementation, the antenna 452, the transmitter 454, the transmit processor 468, and the controller / processor 459 are used to send a first message; and at least one of the antenna 420, the receiver 418, the receive processor 470, and the controller / processor 475 is used to receive a first message.

[0396] As an implementation, the antenna 452, the transmitter 454, the transmit processor 468, and the controller / processor 459 are used to send a second message; and at least one of the antenna 420, the receiver 418, the receive processor 470, and the controller / processor 475 is used to receive a second message.

[0397] As an implementation, the antenna 452, the transmitter 454, the transmit processor 468, and the controller / processor 459 are used to send a first wireless signal; and at least one of the antenna 420, the receiver 418, the receive processor 470, and the controller / processor 475 is used to receive a first wireless signal.

[0398] As an embodiment, the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 are used to receive a second wireless signal; and at least one of the antenna 420, the transmitter 418, the transmitting processor 416, and the controller / processor 475 is used to send a second wireless signal.

[0399] As an embodiment, the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 are used to receive the first signaling; and at least one of the antenna 420, the transmitter 418, the transmitting processor 416, and the controller / processor 475 is used to send the first signaling.

[0400] As an embodiment, the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 are used to receive a second signaling; and at least one of the antenna 420, the transmitter 418, the transmitting processor 416, and the controller / processor 475 is used to send a second signaling.

[0401] As an embodiment, the antenna 452, the receiver 454, the receiving processor 456, and the controller / processor 459 are used to receive a third signaling; and at least one of the antenna 420, the transmitter 418, the transmitting processor 416, and the controller / processor 475 is used to send a third signaling.

[0402] As an embodiment, the first communication device 450 corresponds to the first node in this application.

[0403] As an embodiment, the second communication device 410 corresponds to the second type of node in this application.

[0404] As a sub-embodiment of this embodiment, the second type of node includes a base station maintaining the first cell.

[0405] As a sub-embodiment of this embodiment, the second type of node includes a base station maintaining the second cell.

[0406] As a sub-embodiment of this embodiment, the second type of node includes a recipient of the first message.

[0407] As a sub-embodiment of this embodiment, the second type of node includes a recipient of the second message.

[0408] As an embodiment, the first communication device 450 is a user equipment.

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

[0410] As an embodiment, the first communication device 450 is a user equipment supporting NTN.

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

[0412] As an embodiment, the first communication device 450 has a positioning capability.

[0413] As an embodiment, the first communication device 450 does not have a fixed energy capability.

[0414] As an embodiment, the first communication device 450 is a user equipment supporting TN.

[0415] As an embodiment, the second communication device 410 is a base station device (gNB / eNB / ng-eNB).

[0416] As an embodiment, the second communication device 410 is a base station device supporting a large delay difference.

[0417] As an embodiment, the second communication device 410 is a base station device supporting NTN.

[0418] As an embodiment, the second communication device 410 is a satellite device.

[0419] As an embodiment, the second communication device 410 is a flying platform device.

[0420] As an embodiment, the second communication device 410 is a base station device supporting TN.

[0421] Example 5

[0422] Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 5 It is particularly noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0423] for First node U01 , receiving the first signaling in step S5101; determining in step S5102 that a wireless connection failure occurs in the first cell; in step S5103, the second cell is in the first state; when the second cell is in the first state, as a response to determining that the wireless connection failure occurs in the first cell, determining that the second cell enters the third state; sending a first wireless signal in step S5104, receiving a second wireless signal in step S5105, restoring the wireless bearer with the second cell in step S5106, the second cell is in the third state in step S5107, and sending a first message in step S5108.

[0424] for Second node N02 , sending the first signaling in step S5201.

[0425] for The third node N03 , sending the first signaling in step S5301, receiving the first wireless signal in step S5302, sending the second wireless signal in step S5303, and receiving the first message in step S5304.

[0426] In Example 5, the first message is used for wireless connection recovery; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; when the second cell is in the third state, the first node monitors the control signaling on the second cell; the first wireless signal is used to trigger the second cell to enter the third state, or the second wireless signal is used to trigger the second cell to enter the third state; the first signaling is used to instruct the second cell to enter the first state.

[0427] As an embodiment, the behavior of determining that the second cell enters the third state includes restoring the radio bearer with the second cell.

[0428] As an embodiment, the behavior of determining that the second cell enters the third state includes: sending a first wireless signal.

[0429] As an embodiment, the behavior of determining that the second cell enters the third state includes: receiving a second wireless signal.

[0430] As an embodiment, the second node N02 is one of the second-type nodes in the present application.

[0431] As an embodiment, the third node N03 is one of the second-type nodes in this application.

[0432] As an embodiment, the phrase that the first signaling is used to indicate that the second cell enters the first state includes: when the first node receives the first signaling and the first signaling includes a first indication, determining to transition the second cell to the first state.

[0433] As a sub-embodiment of this embodiment, the first signaling is used to carry the first indication.

[0434] As a sub-embodiment of this embodiment, the first signaling carries the first indication.

[0435] As a sub-embodiment of this embodiment, the first indication includes 1 bit.

[0436] As a sub-embodiment of this embodiment, the first indication includes K1 bits, and K1 is an integer greater than 1.

[0437] As a sub-embodiment of this embodiment, the first indication is a field in the first signaling.

[0438] As a sub-embodiment of this embodiment, the first indication is an IE in the first signaling.

[0439] As a sub-embodiment of this embodiment, the first indication includes the first bit map in this application.

[0440] As an embodiment, the phrase that the first signaling is used to indicate that the second cell enters the first state includes: the first signaling is used to determine to transition the second cell to the first state.

[0441] As an embodiment, the phrase that the first signaling is used to indicate that the second cell enters the first state includes: the first signaling indicates that the second cell of the first node enters a dormant state.

[0442] As an embodiment, the sender of the first signaling includes a base station maintaining the first cell.

[0443] As an embodiment, the sender of the first signaling includes a base station maintaining the second cell.

[0444] As an embodiment, the first signaling is all or part of an RRC signaling.

[0445] As an embodiment, the first signaling is all or part of one or more IE(s) in an RRC signaling.

[0446] As an embodiment, the first signaling is all or part of one or more fields in an IE in an RRC signaling.

[0447] As an embodiment, the first signaling includes an RRCReconfiguration message.

[0448] As an embodiment, the first signaling includes an RRCConnectionReconfiguration message.

[0449] As an embodiment, the signaling radio bearer of the first signaling includes SRB1.

[0450] As an embodiment, the signaling radio bearer of the first signaling includes SRB3.

[0451] As an embodiment, the first signaling includes MAC layer signaling.

[0452] As an embodiment, the first signaling includes MAC CE.

[0453] As an embodiment, the first signaling includes a MAC subheader.

[0454] As an embodiment, the first signaling includes physical layer signaling.

[0455] As an embodiment, the first signaling includes DCI.

[0456] As an embodiment, the phrase that the first wireless signal is used to trigger the second cell to enter the third state includes: the first wireless signal is sent on predefined resources and is used to trigger the second cell to enter the third state.

[0457] As an embodiment, the phrase that the first radio signal is used to trigger the second cell to enter the third state includes: when the first node restores the radio bearer of the second cell, sending the first radio signal.

[0458] As an embodiment, the phrase that the first wireless signal is used to trigger the second cell to enter the third state includes: sending the first wireless signal when the first node converts the second cell to the third state.

[0459] As an embodiment, the phrase that the first wireless signal is used to trigger the second cell to enter the third state includes: the first wireless signal carrying the first domain in the present application is used to apply for converting the second cell to the third state.

[0460] As a sub-embodiment of this embodiment, the first domain indicates that the second cell enters a third state.

[0461] As an embodiment, the receiver of the first wireless signal includes a maintaining base station of the second cell.

[0462] As an embodiment, the first wireless signal is transmitted via an air interface.

[0463] As an embodiment, the first wireless signal is sent through an antenna port.

[0464] As an embodiment, the first wireless signal is transmitted through the uu port.

[0465] As an embodiment, the first wireless signal includes an uplink (Uplink, UL) signal.

[0466] As an embodiment, the first wireless signal includes a baseband signal.

[0467] As an embodiment, the first wireless signal includes all or part of a physical layer (Physical Layer) signal (Signal).

[0468] As an embodiment, the first wireless signal includes all or part of MAC signaling.

[0469] As an embodiment, the first wireless signal includes all or part of a field of a MAC CE (Control Element).

[0470] As an embodiment, the first wireless signal includes all or part of a MAC subheader.

[0471] As an embodiment, the first wireless signal includes all or part of a field of a MAC PDU.

[0472] As an embodiment, the first wireless signal includes a C-RNTI (Cell Radio Network Temporary Identifier) ​​MAC CE.

[0473] As an embodiment, the first wireless signal includes a CCCH SDU.

[0474] As an embodiment, the first wireless signal includes all or part of the high-layer signaling.

[0475] As an embodiment, the first wireless signal includes all or part of higher layer signaling.

[0476] As an embodiment, the first wireless signal includes an RRC message.

[0477] As an embodiment, the first wireless signal includes one or more IE(s) in an RRC message.

[0478] As an embodiment, the first wireless signal includes one or more fields in an IE in an RRC message.

[0479] As an embodiment, the first wireless signal is used to initiate a random access process.

[0480] As an embodiment, the first wireless signal is used to initiate a first type of random access.

[0481] As a sub-embodiment of this embodiment, the first type of random access includes 4-step RA.

[0482] As a sub-embodiment of this embodiment, the first type of random access includes contention-based random access.

[0483] As a sub-embodiment of this embodiment, the first type of random access includes non-contention-based random access.

[0484] As a sub-embodiment of this embodiment, the first type of random access includes message 1, message 2, message 3 and message 4.

[0485] As a subsidiary embodiment of this sub-embodiment, the first wireless signal includes message 1.

[0486] As a subsidiary embodiment of this sub-embodiment, the first wireless signal includes message 3.

[0487] As a subsidiary embodiment of this sub-embodiment, the second signal includes message 2.

[0488] As a subsidiary embodiment of this sub-embodiment, the second signal includes message 4.

[0489] As a sub-embodiment of this embodiment, the first type of random access includes message 1 and message 2.

[0490] As an embodiment, the first wireless signal is used to initiate a second type of random access.

[0491] As a sub-embodiment of this embodiment, the second type of random access includes 2-step RA.

[0492] As a sub-embodiment of this embodiment, the second type of random access includes contention-based random access.

[0493] As a sub-embodiment of this embodiment, the second type of random access includes non-contention-based random access.

[0494] As a sub-embodiment of this embodiment, the second type of random access includes message A and message B.

[0495] As a subsidiary embodiment of this sub-embodiment, the first wireless signal includes message A.

[0496] As a subsidiary embodiment of this sub-embodiment, the second signal includes message B.

[0497] As a subsidiary embodiment of this sub-embodiment, the message A includes all or part of the message 1 in the present application.

[0498] As a subsidiary embodiment of this sub-embodiment, the message A includes all or part of the message 3 in the present application.

[0499] As a subsidiary embodiment of this sub-embodiment, the message B includes all or part of the message 2 in the present application.

[0500] As a subsidiary embodiment of this sub-embodiment, the message B includes all or part of the message 4 in the present application.

[0501] As an embodiment, the first wireless signal includes all or part of message 1.

[0502] As a sub-embodiment of this embodiment, the message 1 includes a preamble sequence (Sequence).

[0503] As a sub-embodiment of this embodiment, the message 1 includes a bit string.

[0504] As a sub-embodiment of this embodiment, the message 1 includes a sequence (Sequence).

[0505] As a sub-embodiment of this embodiment, the message 1 includes a ZC sequence.

[0506] As a sub-embodiment of this embodiment, the message 1 includes a Gold sequence.

[0507] As a sub-embodiment of this embodiment, the message 1 includes a Preamble.

[0508] As a sub-embodiment of this embodiment, the message 1 includes a PRACH signal.

[0509] As a sub-embodiment of this embodiment, the message 1 includes a NPRACH signal.

[0510] As an embodiment, the first wireless signal includes all or part of message 3.

[0511] As a sub-embodiment of this embodiment, the message 3 includes PUSCH.

[0512] As a sub-embodiment of this embodiment, the message 3 includes a payload (Payload).

[0513] As a sub-embodiment of this embodiment, the message 3 includes MAC information.

[0514] As a sub-embodiment of this embodiment, the message 3 includes RRC information.

[0515] As a sub-embodiment of this embodiment, the message 3 includes the RRCResumeRequest1 message.

[0516] As a sub-embodiment of this embodiment, the message 3 includes a RRCResumeRequest message.

[0517] As a sub-embodiment of this embodiment, the message 3 includes an RRCConnectionResumeRequest message.

[0518] As a sub-embodiment of this embodiment, the message 3 includes a UE identifier.

[0519] As a sub-embodiment of this embodiment, the message 3 includes C-RNTI.

[0520] As a sub-embodiment of this embodiment, the message 3 includes a BSR (Buffer Status Report).

[0521] As a sub-embodiment of this embodiment, the message 3 includes a Resume ID.

[0522] As a sub-embodiment of this embodiment, the message 3 includes I-RNTI.

[0523] As a sub-embodiment of this embodiment, the message 3 includes an indicator of the amount of data.

[0524] As a sub-embodiment of this embodiment, the message 3 includes a NAS UE identifier.

[0525] As an embodiment, the phrase "the first wireless signal is used to trigger the second cell to enter the third state" includes: the first wireless signal

[0526] As an embodiment, the phrase that the second wireless signal is used to trigger the second cell to enter the third state includes: the second wireless signal is used to determine to transition the second cell to the third state.

[0527] As an embodiment, the phrase that the second wireless signal is used to trigger the second cell to enter a third state includes: the second wireless signal indicates that the second cell of the first node enters an activated state.

[0528] As an embodiment, the phrase the second wireless signal is used to trigger the second cell to enter the third state, including: when the first node receives the second wireless signal and the second wireless signal includes a second indication, determining to transition the second cell to the third state.

[0529] As a sub-embodiment of this embodiment, the second wireless signal is used to carry the second indication.

[0530] As a sub-embodiment of this embodiment, the second wireless signal carries the second indication.

[0531] As a sub-embodiment of this embodiment, the second indication includes 1 bit.

[0532] As a sub-embodiment of this embodiment, the second indication includes K1 bits, and K1 is an integer greater than 1.

[0533] As a sub-embodiment of this embodiment, the second indication is a field in the second wireless signal.

[0534] As a sub-embodiment of this embodiment, the second indication is an IE in the second wireless signal.

[0535] As a sub-embodiment of this embodiment, the second indication includes the first bit map in this application.

[0536] As an embodiment, the sender of the second wireless signal includes a maintaining base station of the first cell.

[0537] As an embodiment, the sender of the second wireless signal includes a maintaining base station of the second cell.

[0538] As an embodiment, the second wireless signal is all or part of an RRC signaling.

[0539] As an embodiment, the second wireless signal is all or part of one or more IE(s) in an RRC signaling.

[0540] As an embodiment, the second wireless signal is all or part of one or more fields in an IE in an RRC signaling.

[0541] As an embodiment, the second wireless signal includes an RRCReconfiguration message.

[0542] As an embodiment, the second wireless signal includes an RRCConnectionReconfiguration message.

[0543] As an embodiment, the second wireless signal includes an RRCResume message.

[0544] As an embodiment, the second wireless signal includes an RRCConnectionResume message.

[0545] As an embodiment, the signaling radio bearer of the second radio signal includes SRB1.

[0546] As an embodiment, the signaling radio bearer of the second radio signal includes SRB3.

[0547] As an embodiment, the second wireless signal includes MAC layer signaling.

[0548] As an embodiment, the second wireless signal includes a MAC CE.

[0549] As an embodiment, the second wireless signal includes a MAC subheader.

[0550] As an embodiment, the second wireless signal includes physical layer signaling.

[0551] As an embodiment, the second wireless signal includes DCI.

[0552] As an embodiment, the second wireless signal includes the first bit map in the present application.

[0553] As an embodiment, the second wireless signal and the first signaling include the same RRC message.

[0554] As an embodiment, the second wireless signal is the same as the first signaling.

[0555] As an embodiment, the second wireless signal is different from the first signaling.

[0556] As an embodiment, the second wireless signal and the first signaling do not include the same RRC message.

[0557] As an embodiment, the meaning of resume includes Resume.

[0558] As an embodiment, the recovery means including Restore.

[0559] As an embodiment, the wireless bearer includes a Radio Bearer (RB).

[0560] As an embodiment, the wireless bearer includes SRB (Signalling Radio Bearer).

[0561] As a sub-embodiment of this embodiment, the SRB is used to transmit control signaling.

[0562] As a sub-embodiment of this embodiment, the SRB is used to transmit RRC messages.

[0563] As a sub-embodiment of this embodiment, the SRB is used to transmit NAS messages.

[0564] As a sub-embodiment of this embodiment, the SRB includes SRB0.

[0565] As a sub-embodiment of this embodiment, the SRB includes SRB1.

[0566] As a sub-embodiment of this embodiment, the SRB includes SRB2.

[0567] As a sub-embodiment of this embodiment, the SRB includes SRB3.

[0568] As a sub-embodiment of this embodiment, the SRB includes a Split SRB.

[0569] As a subsidiary embodiment of this sub-embodiment, the Split SRB is used for dual connectivity (Dual Connectivity, DC).

[0570] As a subsidiary embodiment of this sub-embodiment, the Split SRB supports transmission through MCG and SCG.

[0571] As an embodiment, the wireless bearer includes a DRB.

[0572] As a sub-embodiment of this embodiment, the DRB is used to transmit data.

[0573] As a sub-embodiment of this embodiment, the DRB is used to carry user plane data.

[0574] As an embodiment, the wireless bearer includes a DAPS bearer (Bearer).

[0575] As a sub-embodiment of this embodiment, during DAPS switching, the protocol stack carried by the DAPS is located at both the serving base station of the source cell and the serving base station of the target cell.

[0576] As a subsidiary embodiment of this sub-embodiment, the source cell includes the first cell.

[0577] As a subsidiary embodiment of this sub-embodiment, the serving base station of the source cell includes a source gNB.

[0578] As a subsidiary embodiment of this sub-embodiment, the serving base station of the target cell includes a target gNB.

[0579] As a sub-embodiment of this embodiment, during DAPS switching, the DAPS bearer simultaneously uses resources of a serving base station of a source cell and a serving base station of a target cell.

[0580] As an embodiment, the action of restoring the wireless bearer between the second cell includes: restoring the SRB between the second cell.

[0581] As an embodiment, the action of restoring the wireless bearer between the second cell includes: restoring SRB1 between the second cell.

[0582] As an embodiment, the action of restoring the wireless bearer between the second cell includes: restoring Split SRB1 between the second cell.

[0583] As an embodiment, the action of restoring the wireless bearer between the second cell includes: restoring SRB3 between the second cell.

[0584] As an embodiment, the action of restoring the wireless bearer between the second cell includes: restoring the DRB between the second cell.

[0585] As an embodiment, the behavior determining that the second cell enters the third state includes: restoring the wireless bearer between the second cell and the second cell; sending a first wireless signal; wherein the first wireless signal is used to trigger the second cell to enter the third state.

[0586] As a sub-embodiment of this embodiment, when the second cell enters the third state, the radio bearer between the second cell is restored first, and then the first radio signal is sent.

[0587] As a sub-embodiment of this embodiment, when the second cell enters the third state, the first wireless signal is first sent, and then the wireless bearer between the second cell and the second cell is restored.

[0588] As an embodiment, the behavior determining that the second cell enters the third state includes: restoring the wireless bearer between the second cell; sending the first wireless signal; receiving the second wireless signal, wherein the second wireless signal is used to trigger the second cell to enter the third state.

[0589] As a sub-embodiment of this embodiment, when the second cell enters the third state, the radio bearer between the second cell and the second cell is first restored; then the first radio signal is sent, and the second radio signal is received.

[0590] As a sub-embodiment of this embodiment, when the second cell enters the third state, the first wireless signal is first sent, and the second wireless signal is received; and then the wireless bearer between the second cell and the second cell is restored.

[0591] As a sub-embodiment of this embodiment, when the second cell enters the third state, the first wireless signal is first sent; then the wireless bearer between the second cell is restored; and then the second wireless signal is received.

[0592] As an embodiment, the first wireless signal or the second wireless signal is used to trigger the second cell to enter a third state.

[0593] As an embodiment, when the first wireless signal is used to trigger the second cell to enter the third state.

[0594] As an embodiment, the sentence "the behavior determining that the second cell enters the third state includes: sending a first wireless signal;" includes: sending the first wireless signal is an action in the behavior determining that the second cell enters the third state.

[0595] As an embodiment, the sentence "The behavior determining that the second cell enters the third state includes: sending a first wireless signal;" includes: the behavior determining that the second cell enters the third state includes multiple actions, and sending the first wireless signal is one of the multiple actions.

[0596] As an embodiment, the dashed box F1 is optional.

[0597] As an example, a dashed box F1 exists.

[0598] As an embodiment, the dashed box F1 does not exist.

[0599] As an embodiment, the dashed box F2 is optional.

[0600] As an example, a dashed box F2 exists.

[0601] As an embodiment, the dashed box F2 does not exist.

[0602] As an embodiment, the dashed box F3 is optional.

[0603] As an example, a dashed box F3 exists.

[0604] As an embodiment, the dashed box F3 does not exist.

[0605] As an embodiment, the dashed box F4 is optional.

[0606] As an example, a dashed box F4 exists.

[0607] As an embodiment, the dashed box F4 does not exist.

[0608] Example 6

[0609] Embodiment 6 illustrates a wireless signal transmission flow chart according to another embodiment of the present application, as shown in the attached Figure 6 It is particularly noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0610] for First node U01 , in step S6101, it is determined that a wireless connection failure occurs in the first cell, in step S6102, the second cell is in a second state, and in step S6103, a second message is sent.

[0611] for Fourth node N04 , receiving the second message in step S6401.

[0612] In Embodiment 6, it is determined that a wireless connection failure occurs in the first cell; when the second cell is in a second state, a second message is sent as a response to determining that the wireless connection failure occurs in the first cell; wherein the second message is used for wireless connection reestablishment.

[0613] As an embodiment, the first node U01 includes a user equipment.

[0614] As an embodiment, the first node U01 is connected to the second node N02 and the third node N03 at the same time.

[0615] As an embodiment, the first cell is a cell in the second node N02.

[0616] As an embodiment, the second cell is a cell in the third node N03.

[0617] As an embodiment, the fourth node N04 is one of the second-type nodes in this application.

[0618] As an embodiment, the fourth node N04 is determined through cell selection (Cell Selection).

[0619] As an embodiment, the fourth node N04 is determined through cell reselection.

[0620] As an embodiment, the fourth node N04 is determined through cell measurement.

[0621] As an embodiment, the fourth node N04 is different from the base station maintaining the first cell and the base station maintaining the second cell.

[0622] As an embodiment, the fourth node N04 is the same as the base station maintaining the first cell.

[0623] As an embodiment, the fourth node N04 is the same as the maintaining base station of the second cell.

[0624] As an embodiment, step S6101 and step S6102 occur simultaneously.

[0625] As an embodiment, step S6101 is before step S6102.

[0626] As an embodiment, step S6101 is performed after step S6102.

[0627] Example 7

[0628] Embodiment 7 illustrates a wireless signal transmission flow chart according to another embodiment of the present application, as shown in the attached Figure 7 It is particularly noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0629] for First node U01 , in step S7101, it is determined that a wireless connection failure occurs in the first cell; in step S7102, the second cell is in a third state; and in step S7103, a first message is sent.

[0630] for The third node N03 , receiving the first message in step S7301.

[0631] In Example 7, it is determined that a wireless connection failure occurs in the first cell; when the second cell is in the third state, the first message is sent as a response to determining that the wireless connection failure occurs in the first cell; wherein the first message is used for wireless connection recovery; when the second cell is in the third state, the first node monitors the control signaling on the second cell.

[0632] As an embodiment, the first node U01 includes a user equipment.

[0633] As an embodiment, the first node U01 is simultaneously connected to the second node N02 in the present application and the third node N03 in the present application.

[0634] As an embodiment, the first cell is a cell in the second node N02 in the present application.

[0635] As an embodiment, the second cell is a cell in the third node N03.

[0636] As an embodiment, step S7101 and step S7102 occur simultaneously.

[0637] As an embodiment, step S7101 is before step S7102.

[0638] As an embodiment, step S7101 is performed after step S7102.

[0639] Example 8

[0640] Embodiment 8 illustrates a transmission flow chart of the second signaling and the third signaling according to an embodiment of the present application, as shown in the attached figure. Figure 8 It is particularly noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0641] for First node U01 , receiving the second signaling in step S8101; receiving the third signaling in step S8102.

[0642] for Fifth node N05 , sending the second signaling in step S8501; sending the third signaling in step S8502.

[0643] In Example 8, when a first set of conditions is met, a first timer is started; while the first timer is running, the second cell is converted to the third state and the first timer is stopped; when the first timer expires, an RRC connection re-establishment process is initiated; the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum running time of the first timer; the third signaling is used to indicate whether the second cell enters the third state from the first state.

[0644] As an embodiment, the fifth node N05 includes the second node N02.

[0645] As an embodiment, the fifth node N05 includes the third node N03.

[0646] As an embodiment, the second signaling is transmitted via an air interface.

[0647] As an embodiment, the second signaling is sent through the antenna port.

[0648] As an embodiment, the second signaling includes a downlink (DL) signal.

[0649] As an embodiment, the second signaling includes a sidelink (Sidelink, SL) signal.

[0650] As an embodiment, the second signaling includes all or part of the high-layer signaling.

[0651] As an embodiment, the second signaling includes all or part of higher layer signaling.

[0652] As an embodiment, the second signaling includes an RRC (Radio Resource Control) message.

[0653] As an embodiment, the second signaling includes all or part of an IE (Information Element) in an RRC message.

[0654] As an embodiment, the second signaling includes all or part of a field in an IE in an RRC message.

[0655] As an embodiment, the second signaling includes UE-TimersAndConstants.

[0656] As an embodiment, the second signaling includes RLF-TimersAndConstants.

[0657] As an embodiment, the second signaling includes SIB1.

[0658] As an embodiment, the second signaling includes an RRCReconfiguration message.

[0659] As an embodiment, the second signaling includes an RRCConnectionReconfiguration message.

[0660] As an embodiment, the phrase that the second signaling includes the first expiration value includes: the second signaling indicates the first expiration value.

[0661] As an embodiment, the phrase that the second signaling includes the first expiration value includes: the second signaling is applied to configure the first expiration value of the first timer.

[0662] As an embodiment, the phrase that the second signaling includes the first expiration value includes: the second signaling is used to determine the first expiration value.

[0663] As an embodiment, the phrase that the second signaling includes the first expiration value includes: the first expiration value is a field in the second signaling.

[0664] As an embodiment, the phrase that the first expiration value is used to determine the maximum running time of the first timer includes: the first expiration value is equal to the maximum running time of the first timer.

[0665] As an embodiment, the phrase that the first expiration value is used to determine the maximum running time of the first timer includes: when the running time of the first timer reaches the first expiration value, the first timer expires.

[0666] As an embodiment, the phrase that the first expiration value is used to determine the maximum running time of the first timer includes: when the running time of the first timer reaches the first expiration value, the first timer does not continue timing.

[0667] As an embodiment, the action of starting a first timer includes: the first timer starts timing.

[0668] As an embodiment, the action of starting a first timer includes: the first timer starts running.

[0669] As an embodiment, the action of stopping the first timer includes: the first timer stops timing.

[0670] As an embodiment, the action of stopping the first timer includes: the first timer does not continue to run.

[0671] As an embodiment, the third signaling is transmitted via an air interface.

[0672] As an embodiment, the third signaling is sent through the antenna port.

[0673] As an embodiment, the third signaling includes a downlink (DL) signal.

[0674] As an embodiment, the third signaling includes a sidelink (Sidelink, SL) signal.

[0675] As an embodiment, the third signaling includes all or part of the high-layer signaling.

[0676] As an embodiment, the third signaling includes all or part of higher layer signaling.

[0677] As an embodiment, the third signaling includes an RRC (Radio Resource Control) message.

[0678] As an embodiment, the third signaling includes all or part of an IE (Information Element) in an RRC message.

[0679] As an embodiment, the third signaling includes all or part of a field in an IE in an RRC message.

[0680] As an embodiment, the third signaling is all or part of the fields in the RRCReconfiguration message.

[0681] As an embodiment, the third signaling is all or part of the fields in the RRCConnectionReconfiguration message.

[0682] As an embodiment, the third signaling is all or part of the fields in the RRCResume message.

[0683] As an embodiment, the third signaling is all or part of the fields in the RRCConnectionResume message.

[0684] As an embodiment, the third signaling is all or part of the fields in the RRCReestablishment message.

[0685] As an embodiment, the third signaling is all or part of the fields in the RRCConnectionReestablishment message.

[0686] As an embodiment, the third signaling is all or part of the fields in the RRCSetup message.

[0687] As an embodiment, the third signaling is all or part of the fields in the RRCConnectionSetup message.

[0688] As an embodiment, the third signaling is all or part of the fields in the SIB1 message.

[0689] As an embodiment, the third signaling is all or part of the fields in the SystemInformationBlockType1 message.

[0690] As an embodiment, the third signaling includes attemptSCGResume.

[0691] As an embodiment, the third signaling includes attemptSCGActivation.

[0692] As an embodiment, the third signaling includes attemptSCGRestore.

[0693] As an embodiment, the third signaling includes restoreSCG.

[0694] As an embodiment, the third signaling includes resumeSCG.

[0695] As an embodiment, the third signaling includes activateSCG.

[0696] As an embodiment, the third signaling and the first signaling belong to the same RRC message.

[0697] As an embodiment, the third signaling and the first signaling are different IEs of the same RRC message.

[0698] As an embodiment, the third signaling and the first signaling are different domains of the same IE of the same RRC message.

[0699] As an embodiment, the phrase that the third signaling is used to indicate whether the second cell enters the third state from the first state includes: whether the third signaling exists is used to indicate whether the second cell enters the third state from the first state.

[0700] As a sub-embodiment of this embodiment, the third signaling is used to indicate that the second cell enters the third state from the first state.

[0701] As a sub-embodiment of this embodiment, the third signaling is not used to indicate that the second cell does not enter the third state from the first state.

[0702] As an embodiment, the third signaling is used to indicate whether the second cell enters the third state from the first state when the second cell is in the first state and it is determined that a radio connection failure occurs in the first cell.

[0703] As an embodiment, the third signaling indicates whether the first node has the ability to transfer the second cell from the first state to the third state.

[0704] As an embodiment, the third signaling includes one bit.

[0705] As an embodiment, the third signaling includes P1 bits, where P1 is a positive integer.

[0706] As an embodiment, when the third signaling is set to a true value, it indicates that the second cell enters the third state from the first state.

[0707] As a sub-embodiment of this embodiment, the true value includes ture.

[0708] As a sub-embodiment of this embodiment, the true value includes 1.

[0709] As an embodiment, when the third signaling is set to a false value, it indicates that the second cell does not enter the third state from the first state.

[0710] As a sub-embodiment of this embodiment, the false value includes false.

[0711] As a sub-embodiment of this embodiment, the false value includes 1.

[0712] As an embodiment, converting the second cell to the third state includes receiving the second wireless signal.

[0713] As an embodiment, converting the second cell to the third state includes restoring a radio bearer between the first node and the second cell.

[0714] As an embodiment, the action to determine that the second cell enters the third state includes: starting the first timer.

[0715] As an embodiment, the action to determine that the second cell enters the third state includes: the third signaling instructs the second cell to enter the third state from the first state.

[0716] As an embodiment, the sentence "when the first condition set is satisfied, starting the first timer" includes: when the first node determines to transition the second cell from the first state to the third state, starting the first timer.

[0717] As an embodiment, when the first set of conditions is met, the first timer is started and the first wireless signal is sent.

[0718] As an embodiment, the sentence "During the operation of the first timer, the second cell is converted to the third state and the first timer is stopped" includes: when the running time of the first timer is not greater than the first expiration value, if the second cell is converted to the second state, the first timer is stopped.

[0719] As an embodiment, the sentence "while the first timer is running, the second cell is converted to the third state and the first timer is stopped" includes: during the operation of the first timer, if the wireless bearer between the first node and the second cell is restored, the first timer is stopped.

[0720] As an embodiment, when the second wireless signal is received while the first timer is running, the first timer is stopped.

[0721] As an embodiment, the sentence "When the first timer expires, the RRC connection re-establishment process is initiated" includes: when the running time of the first timer reaches the first expiration value, the RRC connection re-establishment process is initiated.

[0722] As an embodiment, the sentence "When the first timer expires, the RRC connection re-establishment process is initiated" includes: when the running time of the first timer reaches the first expiration value, the RRC connection re-establishment process is executed.

[0723] As an embodiment, when the first timer expires, the RRC IDLE state is entered.

[0724] As an embodiment, when the first timer expires, a cell reselection process is performed.

[0725] As an embodiment, the dashed box F5 is optional.

[0726] As an embodiment, the dashed box F6 is optional.

[0727] As an embodiment, one of the dashed box F5 and the dashed box F6 exists.

[0728] As an embodiment, both the dashed box F5 and the dashed box F6 exist.

[0729] As an embodiment, the dashed box F5 and the dashed box F6 do not exist.

[0730] Example 9

[0731] Embodiment 9 illustrates a schematic diagram of the behavior of the first node when the second cell is in different states according to an embodiment of the present application, as shown in the attached figure. Fig. 9 It is particularly noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0732] In Example 9, the first node determines in step S901 that a wireless connection failure occurs in the first cell; if the second cell is in the first state, enters step S902(a), then executes step S903(a), determines that the second cell enters the third state, then jumps to step S902(b), in which the second cell is in the third state, then executes step S903(b), and sends a first message; if the second cell is in the third state, enters step S902(b), executes step S903(b), and sends a first message; if the second cell is in the second state, enters step S902(c), executes step S903(c), and sends a second message.

[0733] As an embodiment, step S902(a), step S902(b) and step S902(c) do not occur at the same time.

[0734] As an embodiment, step S902(a), step S902(b) and step S902(c) are performed before step S901.

[0735] As an embodiment, step S902(a), step S902(b) and step S902(c) are performed after step S901.

[0736] As an embodiment, before sending the first message, if the second cell is in the first state, first execute step S903 (a) to convert the second cell to the third state.

[0737] Example 10

[0738] Embodiment 10 illustrates a schematic diagram of a first field used to indicate a reason for sending a first wireless signal according to an embodiment of the present application, as shown in the attached figure. Fig.10 shown.

[0739] In Example 10, the behavior in the present application determines that the second cell enters the third state, including: sending a first wireless signal, the first wireless signal including a first domain; wherein the first wireless signal is used to trigger the second cell to enter the third state, and the first domain is used to indicate the reason for sending the first wireless signal.

[0740] As an embodiment, the phrase that the first wireless signal includes a first domain includes: the first domain is a domain in the first wireless signal.

[0741] As an embodiment, the phrase that the first wireless signal includes a first field includes: the first field is an IE in the first wireless signal.

[0742] As an embodiment, the phrase that the first wireless signal includes a first domain includes: the first domain is all or part of the first wireless signal.

[0743] As an embodiment, the phrase the first field is used to indicate the reason for sending the first wireless signal, including: the first wireless signal includes an RRC connection recovery request message, and the first field indicates the reason for initiating the RRC connection recovery.

[0744] As an embodiment, the phrase that the first field is used to indicate the reason for sending the first wireless signal includes: the first field indicates that the second cell transitions to the third state.

[0745] As an embodiment, the phrase, the first domain is used to indicate the reason for sending the first wireless signal, including: the first domain indicates that the second cell is switched from a sleep state to a non-sleep state.

[0746] As an embodiment, the phrase that the first domain is used to indicate the reason for sending the first wireless signal includes: the first domain indicates that the first state of the second cell is converted to the third state.

[0747] As an embodiment, the phrase, the first domain is used to indicate the reason for sending the first wireless signal, including: the first domain indicates that RLF occurs in the MCG.

[0748] As an embodiment, the phrase the first field is used to indicate the reason for sending the first wireless signal including: the first field indicates performing MCG link recovery through SCG.

[0749] As an embodiment, the phrase, the first field is used to indicate the reason for sending the first wireless signal, including: the first field indicates the execution of the MCG Failure Information process.

[0750] As an embodiment, the phrase, the first domain is used to indicate the reason for sending the first wireless signal, including: the first domain indicates activation of SCG.

[0751] As an embodiment, the first field includes ResumeCause.

[0752] As an embodiment, the first domain includes establishmentCause.

[0753] As an embodiment, the first domain includes delayTolerantAccess.

[0754] As an embodiment, the name of the first domain includes ResumeCause.

[0755] As an embodiment, the first domain includes scg-Activation.

[0756] As an embodiment, the first domain includes scgActivation.

[0757] As an embodiment, the first domain includes pscell-Activation.

[0758] As an embodiment, the first domain includes pscellActivation.

[0759] As an embodiment, the first domain includes mcg-Recovery.

[0760] As an embodiment, the first field includes mcgFailureInformation.

[0761] As an embodiment, the first domain includes mcg-RLF.

[0762] As an embodiment, the first domain includes emergency.

[0763] As an embodiment, the first domain includes highPriorityAccess.

[0764] As an embodiment, the first domain includes mt-Access.

[0765] As an embodiment, the first domain includes mo-Signalling.

[0766] As an embodiment, the first domain includes mo-Data.

[0767] As an embodiment, the first domain includes mo-VoiceCall.

[0768] As an embodiment, the first domain includes mo-VideoCall.

[0769] As an embodiment, the first domain includes mo-SMS.

[0770] As an embodiment, the first domain includes rna-Update.

[0771] As an embodiment, the first domain includes mps-PriorityAccess.

[0772] As an embodiment, the first domain includes mcs-PriorityAccess.

[0773] Embodiment 11

[0774] Embodiment 11 illustrates a schematic diagram of a first bitmap according to an embodiment of the present application being used to indicate the state of a second cell, as shown in the attached figure. Fig.11 As shown in the attached Fig.11 In the figure, each solid line box represents a bit, the dotted line box represents the first bit map, and 1 / 0 represents that a bit is set to 1 or set to 0.

[0775] In embodiment 11, the first signaling includes a first bitmap, which is used to indicate the status of the second cell; the first bitmap includes Q1 bits, the Q1 bits correspond to Q1 cells respectively, and the second cell is one of the Q1 cells.

[0776] In embodiment 11, the second wireless signal includes a first bit map, which is used to indicate the status of the second cell; the first bit map includes Q1 bits, the Q1 bits correspond to Q1 cells respectively, and the second cell is one of the Q1 cells.

[0777] As an embodiment, the first bit map is used to indicate that the second cell enters the first state.

[0778] As an embodiment, the first bit map is used to indicate that the second cell enters the third state.

[0779] As an embodiment, when one of the Q1 bits is set to 1, it indicates that a cell corresponding to the one bit is set to the first state.

[0780] As an embodiment, when one of the Q1 bits is set to 0, it indicates that a cell corresponding to the one bit is set to the third state.

[0781] As an embodiment, when one of the Q1 bits is set to 0, it indicates that a cell corresponding to the one bit is set to the first state.

[0782] As an embodiment, when one of the Q1 bits is set to 1, it indicates that a cell corresponding to the one bit is set to the third state.

[0783] As an embodiment, Q1 is equal to a non-negative integer multiple of 8.

[0784] As an embodiment, Q1 is equal to 8.

[0785] As an embodiment, Q1 is equal to 16.

[0786] As an embodiment, Q1 is equal to 24.

[0787] As an embodiment, Q1 is equal to 32.

[0788] As an embodiment, the Q1 cells are all associated with the same SCG.

[0789] As a sub-embodiment of this embodiment, one of the Q1 cells includes a PSCell.

[0790] As a sub-embodiment of this embodiment, one of the Q1 cells includes an SCell.

[0791] As a sub-embodiment of this embodiment, when the bit corresponding to the PSCell is set to 0, the remaining bits in the Q1 bits are set to 0.

[0792] As a sub-embodiment of this embodiment, when the PSCell is set to the first state, the SCell in the SCG is set to the first state.

[0793] As a sub-embodiment of this embodiment, when the PSCell is set to the third state, the SCell in the SCG is set to the first state or the third state.

[0794] As an embodiment, the Q1 cells are all associated with Q1 SCG(s).

[0795] As a sub-embodiment of this embodiment, one of the Q1 cells includes a PSCell.

[0796] As a sub-embodiment of this embodiment, one of the Q1 cells includes an SCG.

[0797] As a sub-embodiment of this embodiment, bits corresponding to Q2 cells among the Q1 cells are set to 0, and Q2 is a non-negative integer not greater than Q1.

[0798] Example 12

[0799] Embodiment 12 illustrates a schematic diagram of a first node connecting to a second node and a third node at the same time according to an embodiment of the present application. Fig.12 In the figure, the first node is a user equipment, the second node and the third node are two base station devices respectively; the two solid lines respectively represent the link between the first node and the second node and the link between the first node and the third node; the dotted line represents the link between the second node and the third node.

[0800] In embodiment 12, the first node is connected to the second node and the third node at the same time.

[0801] As an embodiment, the second node includes the second node N02 in the present application.

[0802] As an embodiment, the second node includes the third node N03 in the present application.

[0803] As an embodiment, the second node is a second-type node in the present application.

[0804] As an embodiment, the third node is one of the second-type nodes in this application.

[0805] As an embodiment, the second node and the third node are connected via an Xn interface.

[0806] As an embodiment, the second node and the third node are connected via an Xn-C interface.

[0807] As an embodiment, the second node and the third node are connected via an X2-C interface.

[0808] As an embodiment, the link between the second node and the third node is a non-ideal backhaul.

[0809] As an embodiment, the link between the second node and the third node is an ideal backhaul.

[0810] As an embodiment, the second node and the third node are connected via an optical fiber.

[0811] As an embodiment, the second node and the third node are connected wirelessly.

[0812] As an embodiment, the second node and the third node are connected via a wire.

[0813] As an embodiment, the second node and the third node are connected via multi-hop.

[0814] As an embodiment, the first node and the third node are connected via a Uu interface.

[0815] As an embodiment, the first node and the second node are connected via a Uu interface.

[0816] As an embodiment, the first node is a device supporting dual connectivity.

[0817] As an embodiment, the first node supports MR-DC (Multi-Radio Dual Connectivity).

[0818] As an embodiment, the first node supports NR DC (NR-NR Dual Connectivity).

[0819] As an embodiment, the first node supports Intra-E-UTRA DC.

[0820] As an embodiment, the first node supports NE-DC (NR-E-UTRA Dual Connectivity).

[0821] As an embodiment, the first node supports NGEN-DC (NG-RAN E-UTRA-NR Dual Connectivity).

[0822] As an embodiment, the first node supports EN DC (E-UTRA-NR Dual Connectivity).

[0823] As an embodiment, the signaling radio bearer between the first node and the second node includes SRB1.

[0824] As an embodiment, the signaling radio bearer between the first node and the second node includes SRB2.

[0825] As an embodiment, the signaling radio bearer between the first node and the second node includes SRB3.

[0826] As an embodiment, the signaling radio bearer between the first node and the third node includes SRB1.

[0827] As an embodiment, the signaling radio bearer between the first node and the third node includes SRB2.

[0828] As an embodiment, the signaling radio bearer between the first node and the third node includes SRB3.

[0829] As an embodiment, the second node includes a primary node, and the third node includes a secondary node.

[0830] As an embodiment, the second node includes a MeNB (Master eNodeB), and the third node includes an SgNB.

[0831] As an embodiment, the second node includes a CU (Centralized Unit), and the third node includes a DU.

[0832] As an embodiment, the second node includes a node in an MCG, and the third node includes a node in an SCG.

[0833] As an embodiment, the second node includes a secondary node, and the third node includes a primary node.

[0834] As an embodiment, the second node includes an SgNB (Secondary eNodeB), and the third node includes a MeNB.

[0835] As an embodiment, the second node includes a DU (Distributed Unit), and the third node includes a CU.

[0836] As an embodiment, the second node includes a node in an SCG, and the third node includes a node in an MCG.

[0837] As an embodiment, the second node includes a base station maintaining a PCell, and the third node includes a base station maintaining a PSCell.

[0838] As an embodiment, the second node includes a base station maintaining a PSCell, and the third node includes a base station maintaining a PCell.

[0839] Embodiment 13

[0840] Embodiment 13 illustrates a structural block diagram of a processing device used in a first node according to an embodiment of the present application; Fig.13 As shown in the attached Fig.13 In the embodiment, the processing device 1300 in the first node includes a first receiver 1301 and a first transmitter 1302.

[0841] The first receiver 1301 determines that a wireless connection failure occurs in the first cell;

[0842] The first transmitter 1302, when the second cell is in the first state, determines that the second cell enters a third state and sends a first message as a response to determining that the radio connection failure occurs in the first cell; when the second cell is in the second state, sends a second message as a response to determining that the radio connection failure occurs in the first cell; when the second cell is in the third state, sends the first message as a response to determining that the radio connection failure occurs in the first cell;

[0843] In Example 12, the first message is used for wireless connection recovery; the second message is used for wireless connection re-establishment; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; when the second cell is in the third state, the first node monitors the control signaling on the second cell.

[0844] As an embodiment, the behavior of determining that the second cell enters the third state includes restoring the radio bearer with the second cell.

[0845] As an embodiment, the behavior determining that the second cell enters the third state includes: the first transmitter 1302 sends a first wireless signal; wherein the first wireless signal is used to trigger the second cell to enter the third state.

[0846] As an embodiment, the behavior of determining that the second cell enters the third state includes: the first receiver 1301 receives a second wireless signal; wherein the second wireless signal is used to trigger the second cell to enter the third state.

[0847] As an embodiment, the first receiver 1301 receives a first signaling; wherein the first signaling is used to indicate that the second cell enters the first state.

[0848] As an embodiment, the first receiver 1301 receives a second signaling; when a first condition set is met, starts a first timer; during the operation of the first timer, converts the second cell to the third state and stops the first timer; when the first timer expires, initiates an RRC connection re-establishment process; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum operating time of the first timer.

[0849] As an embodiment, the first receiver 1301 receives a third signaling; wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

[0850] As an embodiment, the first receiver 1301 includes the attached Figure 4 Antenna 452, receiver 454, multi-antenna reception processor 458, reception processor 456, controller / processor 459, memory 460 and data source 467.

[0851] As an embodiment, the first receiver 1301 includes the attached Figure 4 Antenna 452, receiver 454, multi-antenna receive processor 458, and receive processor 456.

[0852] As an embodiment, the first receiver 1301 includes the attached Figure 4 Antenna 452, receiver 454, and receive processor 456.

[0853] As an embodiment, the first transmitter 1302 includes the attached Figure 4 Antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0854] As an embodiment, the first transmitter 1302 includes the attached Figure 4 Antenna 452, transmitter 454, multi-antenna transmit processor 457, and transmit processor 468.

[0855] As an embodiment, the first transmitter 1302 includes the attached Figure 4 Antenna 452, transmitter 454, and transmit processor 468.

[0856] Embodiment 14

[0857] Embodiment 14 illustrates a structural block diagram of a processing device used in a second type of node according to an embodiment of the present application; Fig.14 As shown in the attached Fig.14 In the embodiment, the processing device 1400 in the second type node includes a second type transmitter 1401 and a second type receiver 1402.

[0858] The second type of receiver 1402, when the second cell is in the first state, determines that the second cell enters the third state as a response to the first cell being determined to have a radio connection failure, and receives the first message; when the second cell is in the second state, receives the second message as a response to the first cell being determined to have a radio connection failure; when the second cell is in the third state, receives the first message as a response to the first cell being determined to have a radio connection failure;

[0859] In Example 14, the first message is used for wireless connection recovery; the second message is used for wireless connection re-establishment; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; when the second cell is in the third state, the first node monitors the control signaling on the second cell.

[0860] As an embodiment, the second type of node used to receive the first message includes a base station maintaining the first cell.

[0861] As an embodiment, the second type of node used to receive the first message includes a base station maintaining the second cell.

[0862] As an embodiment, the second type of node includes a recipient of the second message.

[0863] As an embodiment, the recipient of the second message is determined by cell selection.

[0864] As an embodiment, the second type of node includes a recipient of the first message.

[0865] As an embodiment, the behavior of determining that the second cell enters the third state includes restoring a radio bearer between the sender of the first message and the second cell.

[0866] As an embodiment, the behavior determining that the second cell enters the third state includes: the second type receiver 1402 receives a first wireless signal; wherein the first wireless signal is used to trigger the second cell to enter the third state.

[0867] As an embodiment, the second type of node used to receive the first wireless signal includes a base station maintaining the second cell.

[0868] As an embodiment, the behavior determining that the second cell enters the third state includes: the second type transmitter 1401 sends a second wireless signal; wherein the second wireless signal is used to trigger the second cell to enter the third state.

[0869] As an embodiment, the second type of node used to send the second wireless signal includes a base station maintaining the second cell.

[0870] As an embodiment, the second type transmitter 1401 sends a first signaling; wherein the first signaling is used to indicate that the second cell enters the first state.

[0871] As an embodiment, the second type of node used to send the first signaling includes a base station maintaining the second cell.

[0872] As an embodiment, the second type of node used to send the first signaling includes a base station maintaining the first cell.

[0873] As an embodiment, the second type transmitter 1401 sends a second signaling; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum operating time of a first timer; when a first set of conditions is met, the first timer is started; during the operation of the first timer, the second cell is converted to the second state, and the first timer is stopped; when the first timer expires, the RRC connection re-establishment process is initiated.

[0874] As an embodiment, the second type of node used to send the second signaling includes a base station maintaining the second cell.

[0875] As an embodiment, the second type of node used to send the second signaling includes a base station maintaining the first cell.

[0876] As an embodiment, the second type transmitter 1401 sends a third signaling; wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

[0877] As an embodiment, the second type of node used to send the third signaling includes a base station maintaining the second cell.

[0878] As an embodiment, the second type of node used to send the third signaling includes a base station maintaining the first cell.

[0879] As an embodiment, the second type of transmitter 1401 includes the attached Figure 4 Antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475, and memory 476.

[0880] As an embodiment, the second type of transmitter 1401 includes the attached Figure 4 Antenna 420, transmitter 418, multi-antenna transmit processor 471, and transmit processor 416.

[0881] As an embodiment, the second type of transmitter 1401 includes the attached Figure 4 Antenna 420, transmitter 418, and transmit processor 416.

[0882] As an embodiment, the second type of receiver 1402 includes the attached Figure 4 Antenna 420, receiver 418, multi-antenna reception processor 472, reception processor 470, controller / processor 475, and memory 476.

[0883] As an embodiment, the second type of receiver 1402 includes the attached Figure 4 Antenna 420, receiver 418, multi-antenna receive processor 472, receive processor 470.

[0884] As an embodiment, the second type of receiver 1402 includes the attached Figure 4 Antenna 420, receiver 418, and receive processor 470.

[0885] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of software and hardware combination. The user equipment, terminal and UE in the present application include but are not limited to drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment, wireless sensors, Internet cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication, Machine Type Communication) terminals, eMTC (enhanced MTC, enhanced MTC) terminals, data cards, Internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base stations or system devices in this application include but are not limited to macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR Node B) NR Node B, TRP (Transmitter Receiver Point) and other wireless communication devices.

[0886] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A first node used for wireless communication, characterized in that: include: The first receiver determines that a wireless connection failure occurs in the first cell; The first transmitter, when the second cell is in the first state, determines that the second cell enters a third state as a response to determining that the radio connection failure occurs in the first cell, and sends a first message; When the second cell is in the second state, sending a second message as a response to determining that the radio connection failure occurs in the first cell; when the second cell is in the third state, sending the first message as a response to determining that the radio connection failure occurs in the first cell; The first message is used for wireless connection recovery; the second message is used for wireless connection reestablishment; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; When the second cell is in the third state, the first node monitors the control signaling on the second cell.

2. The first node according to claim 1, characterized in that: The determining that the second cell enters the third state includes restoring a radio bearer with the second cell.

3. The first node according to claim 1 or 2, characterized in that: The determining that the second cell enters the third state includes: The first transmitter sends a first wireless signal; The first wireless signal is used to trigger the second cell to enter a third state.

4. The first node according to any one of claims 1 or 2, characterized in that The determining that the second cell enters the third state includes: The first receiver receives a second wireless signal; The second wireless signal is used to trigger the second cell to enter a third state.

5. The first node according to claim 3, characterized in that: The determining that the second cell enters the third state includes: The first receiver receives a second wireless signal; The second wireless signal is used to trigger the second cell to enter a third state.

6. The first node according to any one of claims 1, 2 or 5, characterized in that: include: The first receiver receives a first signaling; The first signaling is used to instruct the second cell to enter the first state.

7. The first node according to claim 3, characterized in that: include: The first receiver receives a first signaling; The first signaling is used to instruct the second cell to enter the first state.

8. The first node according to claim 4, characterized in that: include: The first receiver receives a first signaling; The first signaling is used to instruct the second cell to enter the first state.

9. The first node according to any one of claims 1, 2, 5, 7 or 8, characterized in that: include: The first receiver receives a second signaling; when a first condition set is met, starts a first timer; During the operation of the first timer, converting the second cell to the third state and stopping the first timer; when the first timer expires, initiating an RRC connection re-establishment process; The second signaling includes a first expiration value, and the first expiration value is used to determine the maximum running time of the first timer.

10. The first node according to claim 3, characterized in that: include: The first receiver receives a second signaling; when a first condition set is met, starts a first timer; During the operation of the first timer, the second cell is converted to the third state and the first timer is stopped; when the first timer expires, an RRC connection re-establishment process is initiated; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum operating time of the first timer.

11. The first node according to claim 4, characterized in that: include: The first receiver receives a second signaling; when a first condition set is met, starts a first timer; During the operation of the first timer, the second cell is converted to the third state and the first timer is stopped; when the first timer expires, an RRC connection re-establishment process is initiated; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum operating time of the first timer.

12. The first node according to claim 6, characterized in that: include: The first receiver receives a second signaling; when a first condition set is met, starts a first timer; During the operation of the first timer, the second cell is converted to the third state and the first timer is stopped; when the first timer expires, an RRC connection re-establishment process is initiated; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum operating time of the first timer.

13. The first node according to any one of claims 1, 2, 5, 7, 8, 10, 11 or 12, characterized in that: include: The first receiver receives a third signaling; The third signaling is used to indicate whether the second cell enters the third state from the first state.

14. The first node according to claim 3, characterized in that: include: The first receiver receives third signaling, wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

15. The first node according to claim 4, characterized in that: include: The first receiver receives third signaling, wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

16. The first node according to claim 6, characterized in that: include: The first receiver receives third signaling, wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

17. The first node according to claim 9, characterized in that: include: The first receiver receives third signaling, wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

18. A second type of node used for wireless communication, characterized in that: include: The second type of receiver, when the second cell is in the first state, determines that the second cell enters a third state as a response to the first cell being determined to have a radio connection failure, and receives a first message; When the second cell is in the second state, receiving a second message as a response to the first cell being determined to have a radio connection failure; When the second cell is in the third state, receiving the first message as a response to the first cell being determined to have a radio connection failure; The first message is used for wireless connection recovery; the second message is used for wireless connection reestablishment; when the second cell is in the first state, the sender of the first message does not monitor control signaling on the second cell; When the second cell is in the third state, the sender of the second message monitors the control signaling on the second cell.

19. The second type of node according to claim 18, characterized in that: The determining that the second cell enters the third state includes restoring a radio bearer between the sender of the first message and the second cell.

20. The second type node according to claim 18 or 19, characterized in that: The determining that the second cell enters the third state includes: the second type of receiver receives a first wireless signal; wherein the first wireless signal is used to trigger the second cell to enter the third state.

21. The second type node according to any one of claims 18 or 19, characterized in that: The determining that the second cell enters the third state includes: a second type of transmitter sends a second wireless signal; wherein the second wireless signal is used to trigger the second cell to enter the third state.

22. The second type node according to claim 20, characterized in that: The determining that the second cell enters the third state includes: a second type of transmitter sends a second wireless signal; wherein the second wireless signal is used to trigger the second cell to enter the third state.

23. The second type node according to claim 18 or 19, characterized in that: The second type of transmitter sends a first signaling, wherein the first signaling is used to instruct the second cell to enter the first state.

24. The second type node according to claim 20, characterized in that: The second type of transmitter sends a first signaling, wherein the first signaling is used to instruct the second cell to enter the first state.

25. The second type node according to claim 21, characterized in that: The second type of transmitter sends a first signaling, wherein the first signaling is used to instruct the second cell to enter the first state.

26. The second type node according to claim 18 or 19, characterized in that: A second type of transmitter, sending a second signaling; The second signaling includes a first expiration value, which is used to determine the maximum operating time of a first timer; when a first set of conditions is met, the first timer is started; during the operation of the first timer, the second cell is converted to the second state and the first timer is stopped; when the first timer expires, the RRC connection re-establishment process is initiated.

27. The second type node according to claim 20, characterized in that: A second type of transmitter sends a second signaling; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum operating time of a first timer; when a first set of conditions is met, the first timer is started; during the operation of the first timer, the second cell is converted to the second state, and the first timer is stopped; when the first timer expires, an RRC connection re-establishment process is initiated.

28. The second type of node according to claim 21, characterized in that: The second type of transmitter sends a second signaling; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum operating time of a first timer; when a first set of conditions is met, the first timer is started; during the operation of the first timer, the second cell is converted to the second state, and the first timer is stopped; when the first timer expires, the RRC connection re-establishment process is initiated.

29. The second type of node according to claim 23, characterized in that: The second type of transmitter sends a second signaling; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum operating time of a first timer; when a first set of conditions is met, the first timer is started; during the operation of the first timer, the second cell is converted to the second state, and the first timer is stopped; when the first timer expires, the RRC connection re-establishment process is initiated.

30. The second type node according to any one of claims 22, 24, 25, 27, 28 or 29, characterized in that: The second type of transmitter sends a third signaling; The third signaling is used to indicate whether the second cell enters the third state from the first state.

31. The second type of node according to claim 20, characterized in that: The second type of transmitter sends a third signaling; wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

32. The second type of node according to claim 21, characterized in that: The second type of transmitter sends a third signaling, wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

33. The second type of node according to claim 23, characterized in that: The second type of transmitter sends a third signaling, wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

34. The second type node according to claim 26, characterized in that: The second type of transmitter sends a third signaling, wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

35. A method in a first node for wireless communication, characterized in that: include: Determining that a wireless connection failure occurs in the first cell; When the second cell is in the first state, in response to determining that the radio connection failure occurs in the first cell, determining that the second cell enters a third state and sending a first message; When the second cell is in the second state, sending a second message as a response to determining that the radio connection failure occurs in the first cell; when the second cell is in the third state, sending the first message as a response to determining that the radio connection failure occurs in the first cell; The first message is used for wireless connection recovery; the second message is used for wireless connection reestablishment; when the second cell is in the first state, the first node does not monitor control signaling on the second cell; When the second cell is in the third state, the first node monitors the control signaling on the second cell.

36. The method in the first node according to claim 35, characterized in that: The determining that the second cell enters the third state includes restoring a radio bearer with the second cell.

37. The method in the first node according to claim 35 or 36, characterized in that: The determining that the second cell enters the third state includes: Sending a first wireless signal; The first wireless signal is used to trigger the second cell to enter a third state.

38. The method in the first node according to any one of claims 35 or 36, characterized in that: The determining that the second cell enters the third state includes: receiving a second wireless signal; The second wireless signal is used to trigger the second cell to enter a third state.

39. The method in the first node according to claim 37, characterized in that: The determining that the second cell enters the third state includes: receiving a second wireless signal; The second wireless signal is used to trigger the second cell to enter a third state.

40. The method in the first node according to any one of claims 35, 36 or 39, characterized in that: include: receiving a first signaling; The first signaling is used to instruct the second cell to enter the first state.

41. The method in the first node according to claim 37, characterized in that: include: Receive first signaling; wherein the first signaling is used to instruct the second cell to enter the first state.

42. The method in the first node according to claim 38, characterized in that: include: Receive first signaling; wherein the first signaling is used to instruct the second cell to enter the first state.

43. The method in the first node according to any one of claims 35, 36, 39, 41 or 42, characterized in that: include: receiving a second signaling; When the first condition set is met, starting a first timer; During the operation of the first timer, converting the second cell to the third state and stopping the first timer; when the first timer expires, initiating an RRC connection re-establishment process; The second signaling includes a first expiration value, and the first expiration value is used to determine the maximum running time of the first timer.

44. The method in the first node according to claim 37, characterized in that: include: receiving a second signaling; When a first set of conditions is met, start a first timer; while the first timer is running, convert the second cell to the third state and stop the first timer; when the first timer expires, initiate an RRC connection re-establishment process; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum running time of the first timer.

45. The method in the first node according to claim 38, characterized in that: include: receiving a second signaling; When a first set of conditions is met, start a first timer; while the first timer is running, convert the second cell to the third state and stop the first timer; when the first timer expires, initiate an RRC connection re-establishment process; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum running time of the first timer.

46. ​​The method in the first node according to claim 40, characterized in that: include: receiving a second signaling; When a first set of conditions is met, start a first timer; while the first timer is running, convert the second cell to the third state and stop the first timer; when the first timer expires, initiate an RRC connection re-establishment process; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum running time of the first timer.

47. The method in the first node according to any one of claims 35, 36, 39, 41, 42, 44, 45 or 46, characterized in that include: receiving a third signaling; The third signaling is used to indicate whether the second cell enters the third state from the first state.

48. The method in the first node according to claim 37, characterized in that: include: Receive third signaling; wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

49. The method in the first node according to claim 38, characterized in that: include: Receive third signaling; wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

50. The method in the first node according to claim 40, characterized in that: include: Receive third signaling; wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

51. The method in the first node according to claim 43, characterized in that: include: Receive third signaling; wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

52. A method in a second type node used for wireless communication, characterized in that: include: When the second cell is in the first state, as a response to the first cell being determined to have a radio connection failure, determining that the second cell enters a third state, and receiving a first message; When the second cell is in the second state, receiving a second message as a response to the first cell being determined to have a radio connection failure; When the second cell is in the third state, receiving the first message as a response to the first cell being determined to have a radio connection failure; The first message is used for wireless connection recovery; the second message is used for wireless connection reestablishment; when the second cell is in the first state, the sender of the first message does not monitor control signaling on the second cell; When the second cell is in the third state, the sender of the second message monitors the control signaling on the second cell.

53. The method in the second type node according to claim 52, characterized in that: The determining that the second cell enters the third state includes restoring a radio bearer between the sender of the first message and the second cell.

54. The method in the second type node according to claim 52 or 53, characterized in that: The determining that the second cell enters the third state includes: receiving a first wireless signal; The first wireless signal is used to trigger the second cell to enter a third state.

55. The method in the second type node according to any one of claims 52 or 53, characterized in that: The determining that the second cell enters the third state includes: sending a second wireless signal; The second wireless signal is used to trigger the second cell to enter a third state.

56. The method in the second type node according to claim 54, characterized in that: The determining that the second cell enters the third state includes: sending a second wireless signal; The second wireless signal is used to trigger the second cell to enter a third state.

57. The method in the second type node according to any one of claims 52, 53 or 56, characterized in that: include: Sending a first signaling; The first signaling is used to instruct the second cell to enter the first state.

58. The method in the second type node according to claim 54, characterized in that: include: Sending a first signaling; wherein the first signaling is used to instruct the second cell to enter the first state.

59. The method in the second type node according to claim 55, characterized in that: include: Sending a first signaling; wherein the first signaling is used to instruct the second cell to enter the first state.

60. The method in the second type node according to any one of claims 52, 53, 56, 58 or 59, characterized in that: include: Sending a second signaling; The second signaling includes a first expiration value, which is used to determine the maximum operating time of a first timer; when a first set of conditions is met, the first timer is started; during the operation of the first timer, the second cell is converted to the second state and the first timer is stopped; when the first timer expires, the RRC connection re-establishment process is initiated.

61. The method in the second type node according to claim 54, characterized in that: include: Sending a second signaling; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum running time of a first timer; when a first condition set is met, the first timer is started; during the running of the first timer, the second cell is converted to the second state, and the first timer is stopped; when the first timer expires, the RRC connection re-establishment process is initiated.

62. The method in the second type node according to claim 55, characterized in that: include: Sending a second signaling; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum running time of a first timer; when a first condition set is met, the first timer is started; during the running of the first timer, the second cell is converted to the second state, and the first timer is stopped; when the first timer expires, the RRC connection re-establishment process is initiated.

63. The method in the second type node according to claim 57, characterized in that: include: Sending a second signaling; wherein the second signaling includes a first expiration value, and the first expiration value is used to determine the maximum running time of a first timer; when a first condition set is met, the first timer is started; during the running of the first timer, the second cell is converted to the second state, and the first timer is stopped; when the first timer expires, the RRC connection re-establishment process is initiated.

64. A method in a second type node according to any one of claims 52, 53, 56, 58, 59, 61, 62 or 63, characterized in that: include: Sending a third signaling; The third signaling is used to indicate whether the second cell enters the third state from the first state.

65. The method in the second type node according to claim 54, characterized in that: include: Sending a third signaling; wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

66. The method in the second type node according to claim 55, characterized in that: include: Sending a third signaling; wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

67. The method in the second type node according to claim 57, characterized in that: include: Sending a third signaling; wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

68. The method in the second type node according to claim 60, characterized in that: include: Sending a third signaling; wherein the third signaling is used to indicate whether the second cell enters the third state from the first state.

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