Method and device used for wireless communication

Abstract

The present application discloses a method and device for use in wireless communication. The method includes receiving K RRC signaling, where each of the K RRC signaling is used to configure at least one cell, where K is an integer greater than 1; receiving second signaling, where the second signaling is used to trigger application of one of the K RRC signaling; and performing a first set of operations in response to failure to successfully apply any one of the K RRC signaling, the first set of operations including cell selection, where the first cell is a cell selected in the cell selection included in the first set of operations; whether the first set of operations includes transmitting first information depends on whether the first cell is configured by at least one of the K RRC signaling, and the first set of operations includes transmitting the first information only if the first cell is not configured by any of the K RRC signaling. The present application achieves better mobility management.

Description

[Technical Field]

[0001] The present application relates to a transmission method and apparatus in a wireless communication system, and to mobility management, particularly to reducing latency and avoiding communication interruptions. [Background technology]

[0002] In the future, wireless communication systems will be subject to increasingly diverse application scenarios, which will impose different performance requirements on the system. To meet these requirements, the 72nd 3GPP (3rd Generation Partnership Project) Radio Access Network (RAN) Plenary Meeting decided to consider new radio (NR) technology (also known as fifth generation, or 5G), and the 75th 3GPP RAN Plenary Meeting approved the NR WI (Work Item) to kick off the standardization of NR.

[0003] In communications, both LTE (Long Term Evolution) and 5G NR support reliable and accurate reception of information, optimized energy efficiency, information validity judgment, flexible resource allocation, scalable system architecture, efficient non-access layer information processing, low service interruption and drop rates, and low power consumption. This is crucial for successful communications between base stations and user equipment, rational resource scheduling, and system load balancing. It is also the cornerstone for high throughput, meeting the communication needs of various services, improving spectrum utilization, and improving service quality. This is essential for enhanced mobile broadband (eMBB), ultra-reliable and low-latency communications (URLLC), and enhanced machine-based communications (eMTC). At the same time, there are extensive requirements for the Industrial Internet of Things (IIoT), Vehicle-to-X (V2X), device-to-device communication, unlicensed spectrum communication, user communication quality monitoring, network planning optimization, non-terrestrial network (NTN), terrestrial network (TN), dual connectivity systems, radio resource management and multi-antenna codebook selection, signaling design, neighbor management, service management, and beamforming. Information transmission methods are classified as broadcast and unicast. Both transmission methods are essential for 5G systems, as they are very useful in meeting the above demands. UEs can connect to the network directly or through relay devices.

[0004] As system scenarios and complexity continue to increase, higher requirements are presented for lower interruption rates, lower latency, improved reliability, improved system stability, service flexibility, and power saving. At the same time, compatibility between different versions and different systems also needs to be taken into consideration during system design.

[0005] The meanings of concepts, terms, and abbreviations in this application may refer to 3GPP standards, including, but not limited to: https: / / www.3gpp.org / ftp / Specs / archive / 21_series / 21.905 / 21905-h10.zip https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.300 / 38300-h10.zip https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.331 / 38331-h10.zip https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.321 / 38321-h10.zip https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.304 / 38304-h10.zip Summary of the Invention

[0006] Mobility management is a very important topic among the latest 3GPP research topics. Traditional cell handovers employ a method based on Layer 3 (L3), i.e., RRC (Radio Resource Control) signaling. The terminal reports L3 measurement results, the network selects an appropriate target cell according to the measurement results, and then sends RRC signaling to indicate handover to the target cell. The terminal then executes the RRC signaling for the handover. The execution process generally includes determining the target cell, applying the target cell configuration, synchronizing with the target cell, initiating random access, and sending a handover completion message. The entire handover process involves interpreting and executing signaling, downlink synchronization, uplink synchronization, and completing the remaining handover steps. Generally, this process takes anywhere from tens of milliseconds to 100-200 milliseconds. The impact on services that are sensitive to latency requirements is relatively significant. For some services, a latency of more than 20 milliseconds significantly degrades service quality. In 5G, cells are becoming smaller and smaller, and handovers are becoming more frequent. The problem of service quality degradation caused by handover latency is becoming more severe. A feasible solution is to use measurements from lower layers, i.e., the L1 physical layer, and signal the handover using lower layer signaling, such as the physical layer or MAC layer. Combined with measures such as some preconfigured RRC signaling and terminal presynchronization, handover latency can be significantly reduced. Such handover latency is relatively short, and when it is performed within the same gNB or within one DU (data unit), it can be further optimized to reduce the impact of handover on services. In a new handover method, also known as a cell switching method, the signaling or messages triggering handover can be relatively small. Therefore, they can still be transmitted correctly even if communication quality is degraded. However, there are still some challenges to be faced with such handover methods.First, L1 measurements are acquired faster but are not as stable as L3 measurements, potentially resulting in ping-pong handovers. Similarly, when a handover to a new cell occurs, the quality of the target cell may not be ideal. Conventional handover methods can cause handover failures and even disconnections, which must be avoided. While assistance information can be sent after a handover failure to help the network optimize parameters, it is better to send the assistance information at the appropriate time; otherwise, it may interfere with network decision-making. Therefore, an urgent issue to be solved is how to avoid handover failures and how to appropriately send assistance information related to the failure.

[0007] The present application provides a solution to the above problem.

[0008] It should be noted that, when there is no contradiction, the embodiments and features of any node in the present application may be applied to any other node. When there is no contradiction, the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other. At the same time, the method proposed in the present application can also be used to solve other problems in communication.

[0009] The present application discloses a method for use in a first node for wireless communication, the method comprising: receiving K RRC signalings, each of the K RRC signalings being used to configure at least one cell, where K is an integer greater than 1; receiving second signaling, the second signaling being used to trigger application of one of the K RRC signalings; performing a first set of operations in response to any one of the K RRC signalings not being successfully applied, the first set of operations including cell selection, the first cell being a cell selected in the cell selection included in the first set of operations; Whether the first set of operations includes transmitting the first information depends on whether the first cell is configured by at least one of the K RRC signalings, and the first set of operations includes transmitting the first information only if the first cell is not configured by any of the K RRC signalings, and successfully applying the one RRC signaling includes applying the one cell configured by the RRC signaling as an SpCell.

[0010] In one embodiment, the problems to be solved by the present application include how to ensure communication reliability, how to reduce handover latency, how to support cell handover triggered by lower layers (protocol layers below the RRC layer), how to ensure data continuity in the handover process, how to coordinate radio link failure and handover processes, how to properly determine handover failure, and how to help the network optimize handover.

[0011] In one embodiment, advantages of the above method include more flexibility, contribution to reducing handover latency, ensuring quality of service, ensuring service continuity, improving handover reliability, avoiding handover impact on data transmission, avoiding communication interruptions, and reducing signaling or messaging overhead.

[0012] Specifically, according to one aspect of the present application, the cell selection included in the first set of operations includes: preferentially selecting cells configured by K RRC signalings; and after one cell configured by the K RRC signalings is selected, applying RRC signaling used to configure the one cell from the K RRC signalings.

[0013] Specifically, according to one aspect of the present application, the cell selection included in the first set of operations includes performing up to N cell selections in cells configured by the K RRC signalings before successfully applying one of the K RRC signalings, where N is a positive integer less than or equal to K.

[0014] Specifically, according to one aspect of the present application, the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes the first timer expiring and the first timer being started upon application of any one of the K RRC signalings.

[0015] Specifically, according to one aspect of the present application, the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes N cell selections being performed in a cell configured by the K RRC signalings before successfully applying one of the K RRC signalings.

[0016] Specifically, according to one aspect of the present application, the meaning of the phrase "any one of the K RRC signalings cannot be applied successfully" includes that the quality of the cell configured by any one of the K RRC signalings does not meet the first quality requirement.

[0017] Specifically, according to one embodiment of the present application, the first information includes an L1-based measurement result and an L3-based measurement result.

[0018] Specifically, according to one aspect of the present application, the first information is used to indicate the reason for the cell switch failure.

[0019] Specifically, according to one aspect of the present application, the first information is used to indicate a first cell.

[0020] Specifically, according to one aspect of the present application, the first node is an Internet of Things terminal.

[0021] Specifically, according to one aspect of the present application, the first node is a user equipment.

[0022] Specifically, according to one aspect of the present application, the first node is a relay device.

[0023] Specifically, according to one aspect of the present application, the first node is an access network device.

[0024] Specifically, according to one aspect of the present application, the first node is a vehicle-mounted terminal.

[0025] Specifically, according to one aspect of the present application, the first node is an aircraft.

[0026] Specifically, according to one aspect of the present application, the first node is a mobile phone.

[0027] The present application discloses a first node used for wireless communication, the first node comprising: a first receiver that receives K RRC signalings, each of the K RRC signalings being used to configure at least one cell, where K is an integer greater than 1; a first receiver that receives second signaling, the second signaling being used to trigger application of one of the K RRC signalings; a first processor configured to perform a first set of operations in response to any one of the K RRC signalings being unable to be successfully applied, the first set of operations including cell selection, the first cell being a cell selected in the cell selection included in the first set of operations; Whether the first set of operations includes transmitting the first information depends on whether the first cell is configured by at least one of the K RRC signalings, and the first set of operations includes transmitting the first information only if the first cell is not configured by any of the K RRC signalings, and successfully applying one RRC signaling includes applying the one cell configured by the RRC signaling as an SpCell (special cell).

[0028] In one embodiment, compared to conventional solutions, the present application has the following advantages: Supporting fast handover processes within the same DU (Data Unit); Reducing handover latency; Ensuring data continuity during the handover process; Minimizing the impact of handovers on data transmission; Supporting L1L2 mobility management, Avoiding communication interruptions; Reducing the impact of radio link failures on communications; Supporting fast recovery in case of radio link failure; Helping to optimize the network; Reducing handover failures; and To reduce the transmission of unnecessary auxiliary information. [Brief explanation of the drawings]

[0029] Other features, objects and advantages of the present application will become more apparent from a reading of the detailed description of non-limiting embodiments that follows, taken in conjunction with the figures. [Figure 1] 1 illustrates a flowchart for receiving K RRC signalings, receiving a second signaling, and performing a first set of operations according to an embodiment of the present application. [Figure 2] 1 shows a schematic diagram of a network architecture according to an embodiment of the present application; [Figure 3] 1 illustrates a schematic diagram of an embodiment of a radio protocol architecture for user and control planes according to an embodiment of the present application; [Figure 4] 1 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application; [Figure 5] 1 shows a flowchart of wireless signal transmission according to an embodiment of the present application. [Figure 6] 1 shows a schematic diagram of a signaling format according to an embodiment of the present application; [Figure 7] 1 shows a schematic diagram of a second signaling used to trigger the application of one of the K RRC signalings according to an embodiment of the present application; [Figure 8] FIG. 2 shows a schematic diagram of a first signaling used to configure a first signal according to an embodiment of the present application; [Figure 9] 1 illustrates a schematic diagram of a first signal used to report measurement results or recommended target cells or recommended reference signal resources according to an embodiment of the present application; [Figure 10] 2 shows a schematic diagram of each of K RRC signaling used to configure at least one cell according to an embodiment of the present application; [Figure 11] FIG. 2 shows a schematic diagram of a processing device used in a first node according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0030] The technical solutions of the present application are described in further detail below in conjunction with the drawings. It should be noted that, if there is no contradiction, the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other.

[0031] Embodiment 1 Embodiment 1 illustrates a flowchart of receiving K RRC signalings, receiving a second signaling, and performing a first set of operations according to an embodiment of the present application, as shown in Figure 1. It should be particularly emphasized that in Figure 1, each block represents a step, and the order of the blocks in the figure does not represent a chronological relationship between the represented steps.

[0032] In embodiment 1, the first node of the present application receives K RRC signalings in step 101, receives a second signaling in step 102, and performs a first set of operations in step 103; Each of the K RRC signalings is used to configure at least one cell, where K is an integer greater than 1; the second signaling is used to trigger application of one of the K RRC signalings; any one of the K RRC signalings that cannot be successfully applied is used to trigger execution of a first set of operations, the first set of operations including cell selection, and the first cell is selected from the first set of operations. The cell selected in the included cell selection, and whether the first set of operations includes transmitting the first information depends on whether the first cell is configured by at least one of the K RRC signalings, and the first set of operations includes transmitting the first information only if the first cell is not configured by any of the K RRC signalings, and successfully applying the one RRC signaling includes applying the one cell configured by the RRC signaling as an SpCell.

[0033] In one embodiment, the first node is a UE (User Equipment).

[0034] In one embodiment, the first node is in an RRC connected state.

[0035] In one embodiment, any parameter in this application may be configured by the network or generated by the first node according to an internal algorithm, such as randomly.

[0036] In one embodiment, this application is for NR.

[0037] In one embodiment, this application is for a post-NR wireless communication network.

[0038] In one embodiment, the serving cell refers to the cell where the UE resides. Performing a cell search includes the UE searching for a suitable cell of a selected PLMN (Public Land Mobile Network) or SNPN (Standalone Non-Public Network), selecting the suitable cell to provide available services, and monitoring the control channel of the suitable cell. This process is defined as residing on a cell, i.e., the residing cell is the UE's serving cell for the UE. Residing on a cell in an RRC idle or RRC inactive state has the following advantages: it allows the UE to receive system messages from the PLMN or SNPN; after registration, if the UE wants to establish an RRC connection or continue a suspended RRC connection, the UE can do so by performing initial access on the control channel of the residing cell; the network can page the UE; and the UE can receive notifications from the ETWS (Earthquake and Tsunami Warning System) and CMAS (Commercial Mobile Alert System).

[0039] In one embodiment, for an RRC connected UE not configured with CA / DC (Carrier Aggregation / Dual Connectivity), there is only one serving cell, including the primary cell. For an RRC connected UE configured with CA / DC (Carrier Aggregation / Dual Connectivity), the serving cell is used to refer to a cell set including the special cell (SpCell) and all secondary cells. The primary cell is an MCG (Master Cell Group) cell operating on the primary frequency, and the UE performs the initial connection establishment process or initiates connection re-establishment on the primary cell. In dual connectivity operation, the special cell refers to the PCell (Primary Cell) of the MCG or the PSCell (Primary SCG Cell) of the SCG (Secondary Cell Group), and in non-dual connectivity operation, the special cell refers to the PCell.

[0040] In one embodiment, the frequency at which the SCell (secondary cell) operates is a secondary frequency.

[0041] In one embodiment, the individual contents of an information element are referred to as fields.

[0042] In one embodiment, MR-DC (Multi-Radio Dual Connectivity) refers to dual connectivity of E-UTRA and NR nodes, or dual connectivity between two NR nodes.

[0043] In one embodiment, in MR-DC, the radio access node that provides the control plane connection to the core network is a master node, which may be a master eNB, a master ng-eNB, or a master gNB.

[0044] In one embodiment, MCG refers to a group of serving cells associated with a master node in an MR-DC, including an SpCell, and may optionally also include one or more SCells.

[0045] In one embodiment, the PCell is an SpCell of the MCG.

[0046] In one embodiment, the PSCell is an SpCell of the SCG.

[0047] In one embodiment, in MR-DC, a radio access node that does not provide a control plane connection to the core network and provides additional resources to the UE is a secondary node, which may be an en-gNB, a secondary ng-eNB, or a secondary gNB.

[0048] As an embodiment, in MR-DC, a group of serving cells associated with a secondary node is a SCG (Secondary Cell Group) that includes an SpCell and optionally one or more SCells.

[0049] In one embodiment, the SpCell is a PCell, or the SpCell is a PSCell.

[0050] In one embodiment, the K RRC signalings have the same name.

[0051] In one embodiment, all K RRC signalings are generated by the RRC layer.

[0052] In one embodiment, the K RRC signalings belong to the same RRC message.

[0053] In one embodiment, the K RRC signalings belong to different RRC messages.

[0054] In one embodiment, any one of the K RRC signalings is or includes at least a portion of a field of one RRC message.

[0055] In one embodiment, any one of the K RRC signalings is or includes a field of an RRC message.

[0056] In one embodiment, the content contained in one field in this application is one information element, and the meaning of containing one field is that it contains one information element.

[0057] In one embodiment, the content contained in one field in this application is a plurality of information elements, and the meaning of containing one field is that it contains a plurality of information elements.

[0058] In one embodiment, each of the K RRC signalings is an RRCReconfiguration message.

[0059] In one embodiment, each of the K RRC signalings includes a portion of the fields in the RRCReconfiguration message.

[0060] In one embodiment, each of the K RRC signalings includes only a subset of the fields in the RRCReconfiguration message.

[0061] In one embodiment, each RRCReconfiguration includes at least one CellGroupConfig.

[0062] In one embodiment, each of the K RRC signalings is or includes a CellGroupConfig field or a corresponding information element.

[0063] In one embodiment, each of the K RRC signalings is a CellGroupConfig for a cell group of the target SpCell.

[0064] In one embodiment, each CellGroupConfig contains at least one SpCellConfig.

[0065] In one embodiment, the K RRC signalings include K CellGroupConfig fields in one RRCReconfiguration message.

[0066] In one embodiment, each of the K RRC signalings is or includes an SpCellConfig field or a corresponding information element.

[0067] In one embodiment, the K RRC signalings are SpCellConfigs for the target SpCell.

[0068] In one embodiment, each of the K RRC signalings includes one or more SpCellConfig fields in one RRCReconfiguration message.

[0069] In one embodiment, the K RRC signalings include one or more SpCellConfig fields within one CellGroupConfig field.

[0070] In one embodiment, the K RRC signalings are transmitted to the first node by unicast.

[0071] In one embodiment, the logical channels occupied by the K RRC signaling include a DCCH (Downlink Control Channel).

[0072] In one embodiment, the SpCell includes at least one of a PCell and a PSCell.

[0073] In one embodiment, the SpCell is a PCell.

[0074] In one embodiment, the SpCell is a PSCell.

[0075] In one embodiment, the target SpCell specifically refers to the target cell in the cell handover.

[0076] In one embodiment, the cell handover includes a cell switch.

[0077] In one embodiment, each of the K RRC signalings includes a physCellId field, which indicates the cell configured by the K RRC signalings.

[0078] In one embodiment, K is equal to two.

[0079] In one embodiment, K is 8 or less.

[0080] In one embodiment, K is 16 or less.

[0081] In one embodiment, K is configurable.

[0082] In one embodiment, the K RRC signalings belong to one information element list of one RRC message.

[0083] In one embodiment, the second signaling is control signaling of a protocol layer below the RRC layer.

[0084] In one embodiment, the second signaling is a MAC CE (Control Element).

[0085] In one embodiment, the second signaling is generated at the MAC layer.

[0086] In one embodiment, the second signaling is DCI (Downlink Control Information).

[0087] In one embodiment, the second signaling does not include a PDU (Protocol Data Unit) of the RRC layer.

[0088] In one embodiment, the second signaling does not include a PDU (Protocol Data Unit) of the RLC layer.

[0089] In one embodiment, the second signaling includes an index or a configuration index of one of the K RRC signalings.

[0090] In one embodiment, the second signaling includes an index or a configuration index of at least one of the K RRC signalings.

[0091] In one embodiment, the second signaling includes the identity of the cell configured by one of the K RRC signalings.

[0092] In one embodiment, the second signaling indicates which of the K RRC signalings to perform.

[0093] In one embodiment, the second signaling indicates an execution of one of the K RRC signalings.

[0094] In one embodiment, the execution of any one of the K RRC signalings is dependent on receiving the second signaling.

[0095] In one embodiment, the K RRC signalings are first stored rather than being executed immediately after being received.

[0096] In one embodiment, the first set of actions is performed only if any one of the K RRC signalings cannot be applied successfully.

[0097] In one embodiment, the application of any one of the K RRC signalings depends on the second signaling.

[0098] In one embodiment, the application of at least one of the K RRC signalings depends on the second signaling.

[0099] In one embodiment, the application of one of the K RRC signalings depends on a second signaling.

[0100] In one embodiment, applying one of the K RRC signalings is executing one of the K RRC signalings.

[0101] In one embodiment, the application of the earliest applied RRC signaling among the K RRC signalings depends on the second signaling.

[0102] In one embodiment, applying an RRC signaling other than the earliest applied RRC signaling among the K RRC signalings depends on any one of the K RRC signalings not being successfully applied.

[0103] In one embodiment, whether the first set of operations includes applying RRC signaling for configuring the first cell among the K RRC signalings depends on whether the first cell is configured by at least one of the K RRC signalings.

[0104] In one embodiment, the first set of operations includes applying RRC signaling for configuring the first cell among the K RRC signalings, regardless of whether the first cell is configured by at least one of the K RRC signalings.

[0105] In one embodiment, the action of performing the first set of operations means performing each operation in the first set of operations.

[0106] In one embodiment, the meaning of the phrase "performing a first set of actions in response to any one of the K RRC signalings not being able to be successfully applied" includes that any one of the K RRC signalings not being able to be successfully applied leads to the execution of the first set of actions.

[0107] In one embodiment, the meaning of the phrase "performing a first set of operations in response to any one of the K RRC signalings not being able to be successfully applied" includes performing the first set of operations if any one of the K RRC signalings cannot be successfully applied, and not performing the first set of operations if any one of the K RRC signalings is successfully applied.

[0108] In one embodiment, the meaning of the phrase "performing a first set of operations in response to any one of the K RRC signalings not being able to be successfully applied" includes that if any one of the K RRC signalings cannot be successfully applied, the first set of operations must be performed, and if any one of the K RRC signalings is successfully applied, the first set of operations is not performed.

[0109] In one embodiment, any one of the K RRC signalings that cannot be successfully applied includes one of the K RRC signalings that cannot be successfully applied.

[0110] In one embodiment, the first set of actions is performed after receiving the second signaling.

[0111] In one embodiment, the first set of actions is performed after applying one of the K RRC signalings.

[0112] In one embodiment, the cell selection includes selecting one preferred cell.

[0113] In one embodiment, cell selection involves selecting one cell that meets certain quality requirements.

[0114] In one embodiment, the cell selection includes selecting a cell that meets a first quality requirement.

[0115] In one embodiment, the cell selection includes selecting one target cell.

[0116] As a subembodiment of this embodiment, the cell is a target cell for a cell handover.

[0117] In one subembodiment of this embodiment, the cell is a target cell for cell switching.

[0118] In one embodiment, the cell selection includes selecting one candidate cell for handover.

[0119] In one embodiment, the result of the cell selection is that the first cell is selected.

[0120] In one embodiment, the cell selection includes selecting a first cell.

[0121] In one embodiment, the cell selected in the cell selection is the first cell.

[0122] In one embodiment, the K RRC signaling signals indicate the first cell.

[0123] In one embodiment, the first cell is a candidate cell for cell handover or cell switching.

[0124] In one embodiment, the first cell is a target cell for a cell handover or cell switch.

[0125] In one embodiment, the meaning of the sentence "whether the first set of operations includes transmitting the first information depends on whether the first cell is configured with at least one of the K RRC signalings" is that the first set of operations includes transmitting the first information only if the first cell is not configured with any of the K RRC signalings.

[0126] In one embodiment, the meaning of the phrase "the first set of operations includes transmitting the first information only if the first cell is not configured by any of the K RRC signalings" is that the first set of operations includes transmitting the first information if the first cell is not configured by at least one of the K RRC signalings, and the first set of operations does not include transmitting the first information if the first cell is configured by at least one of the K RRC signalings.

[0127] In one embodiment, the meaning of the phrase "not configured by at least one of the K RRC signalings" includes not belonging to the target cell for cell switching.

[0128] In one embodiment, the advantages of the above method include that cell handover may be performed quickly, especially if one handover attempt fails, successive handover attempts may be performed, and at the same time, it is beneficial to reduce uplink assistance information and save network resources.

[0129] In one embodiment, the meaning of the phrase "not configured by at least one of the K RRC signaling" includes supporting only L3-based handover for the first cell handover.

[0130] In one embodiment, whether the first set of operations includes RRC re-establishment depends on whether the first cell is configured with at least one of the K RRC signalings.

[0131] As a subembodiment of this embodiment, if the first cell is configured with at least one of the K RRC signalings, the first set of operations does not include RRC re-establishment, and if the first cell is not configured with any of the K RRC signalings, the first set of operations includes RRC re-establishment.

[0132] In one embodiment, if the first cell is configured by at least one of the K RRC signalings, the cell switch is not considered to have failed, and if the first cell is not configured by any of the K RRC signalings, the cell switch is considered to have failed.

[0133] In one embodiment, if the first cell is configured by at least one of the K RRC signalings, the first set of operations does not include a MAC reset, and if the first cell is not configured by any of the K RRC signalings, the first set of operations includes a MAC reset.

[0134] In one embodiment, the first information is used to indicate a failure of a cell handover or cell switch.

[0135] In one embodiment, the first information is used to indicate a failure of LTM (L1L2 mobility).

[0136] In one embodiment, the first information is used to indicate a failure of ReconfigurationWithSync.

[0137] In one embodiment, the first information is used to indicate that the K RRC signalings cannot be applied normally.

[0138] In one embodiment, the first information is used to indicate that any one of the K RRC signalings cannot be applied normally.

[0139] In one embodiment, the first information is used to indicate a failure of RRC signaling.

[0140] In one embodiment, the first information is used to indicate a failure of the second signaling.

[0141] In one embodiment, the first message includes one RRC message.

[0142] In one embodiment, the first information includes a report.

[0143] In one embodiment, the first information includes a report related to the failure.

[0144] In one embodiment, the first information is generated by one state variable.

[0145] In one embodiment, the first information is transmitted via an SRB.

[0146] In one embodiment, the first information is a MAC CE.

[0147] In one embodiment, the meaning of the phrase "successfully applying one RRC signaling includes applying one cell configured by the RRC signaling as an SpCell" is that the first cell is a target cell, and successfully applying one RRC signaling includes applying one cell belonging to an MCG configured by the RRC signaling as a PCell and / or applying one cell belonging to an SCG configured by the RRC signaling as a PSCell.

[0148] In one embodiment, the meaning of the phrase "successfully applying one RRC signaling includes applying one cell configured by the RRC signaling as an SpCell" includes synchronizing with one cell configured by the RRC signaling.

[0149] In one embodiment, the meaning of the phrase "successfully applying one RRC signaling includes applying one cell configured by the RRC signaling as an SpCell" includes initiating random access to one cell configured by the RRC signaling.

[0150] In one embodiment, the meaning of "successfully applying one RRC signaling includes applying one cell configured by the RRC signaling as an SpCell" includes executing spCellConfigDedicated that is configured by the RRC signaling and included in the RRC signaling.

[0151] In one embodiment, the meaning of the phrase "successfully applying one RRC signaling includes applying one cell configured by the RRC signaling as an SpCell" is that the RRC signaling includes a physCellId, the physCellId indicates one cell, and successfully applying one RRC signaling includes considering the SpCell to be the cell indicated by the physCellId.

[0152] In one embodiment, the meaning of the phrase "successfully applying one RRC signaling includes applying one cell configured by the RRC signaling as an SpCell" includes applying the BCCH (Broadcast Control Channel) configuration of one cell configured by the RRC signaling.

[0153] In one embodiment, the meaning of the sentence "successfully applying one RRC signaling includes applying one cell configured by the RRC signaling as an SpCell" includes that if the RRC signaling used to configure the first cell among the K RRC signalings is applied successfully, the first cell is applied as / considered to be an SpCell of the first node.

[0154] As a subembodiment of this embodiment, when the RRC signaling used to configure the first cell among the K RRC signalings is for an MCG, the first cell is considered to be a PCell, and when the RRC signaling used to configure the first cell among the K RRC signalings is for an SCG, the first cell is considered to be a PSCell.

[0155] In one embodiment, the meaning of the phrase "successfully applying one RRC signaling includes applying one cell configured by the RRC signaling as an SpCell" includes obtaining the MIB (Master Information Block) of one cell configured by applying the RRC signaling.

[0156] In one embodiment, the meaning of the sentence "whether the first set of operations includes transmitting the first information depends on whether the first cell is configured with at least one of the K RRC signalings" includes whether whether the first set of operations includes transmitting the first information depends on whether the first cell is configured with one of the K RRC signalings.

[0157] In one embodiment, the cell selection included in the first set of operations includes: preferentially selecting cells configured by the K RRC signalings; and, after one cell configured by the K RRC signalings is selected, applying RRC signaling used to configure the one cell from the K RRC signalings.

[0158] In one embodiment, the meaning of the phrase "preferentially selecting a cell configured by K RRC signalings" includes selecting a cell from among the cells configured by K RRC signalings when there is an unselected cell among the cells configured by K RRC signalings.

[0159] In one embodiment, the meaning of the phrase "prefer to select a cell configured by K RRC signalings" includes selecting a cell configured by K RRC signalings instead of selecting a cell other than a cell configured by K RRC signalings under conditions of equal cell quality.

[0160] In one embodiment, "K cells configured by RRC signaling are preferentially selected." The meaning of the phrase "selecting" includes that the K RRC signaling configured cells have a higher priority than cells other than the K RRC signaling configured cells.

[0161] In one embodiment, the meaning of the phrase "preferentially selecting the cells configured by the K RRC signalings" includes still selecting the cells configured by the K RRC signalings even if the quality of the cells configured by the K RRC signalings is not the best with respect to cells other than the cells configured by the K RRC signalings, as long as certain quality requirements are met.

[0162] In one embodiment, the first set of operations includes applying RRC signaling used to configure one cell among the K RRC signaling.

[0163] In one embodiment, the cell selection included in the first set of operations includes performing up to N cell selections in cells configured by the K RRC signalings before successfully applying one of the K RRC signalings, where N is a positive integer less than or equal to K.

[0164] In one embodiment, N is less than K.

[0165] In one embodiment, performing N cell selections means successively selecting N cells configured by K RRC signalings.

[0166] In one embodiment, performing N cell selections means successively selecting N or fewer cells configured by K RRC signalings.

[0167] In one embodiment, N is equal to K.

[0168] In one embodiment, the second signaling is used to indicate N.

[0169] In one embodiment, N is equal to the number of configuration indexes included in the second signaling.

[0170] In one embodiment, if any cell configured by the K RRC signalings is selected in cell selection, then any cell configured by the K RRC signalings will not be involved in subsequent cell selection.

[0171] In one embodiment, if any cell configured by K RRC signalings is selected in cell selection, any cell configured by K RRC signalings before one of the K RRC signalings is successfully applied will not be involved in the subsequent cell selection.

[0172] In one embodiment, if any cell configured by the K RRC signalings is selected in cell selection, any cell configured by the K RRC signalings will not be involved in subsequent cell selections associated with the K RRC signalings.

[0173] In one embodiment, if any cell configured by the K RRC signalings is selected in cell selection, then in a subsequent cell selection, the RRC signaling used to configure any cell among the K RRC signalings is not executed, even if any cell configured by the K RRC signalings is still selected.

[0174] In one embodiment, if any cell configured by the K RRC signalings is selected in cell selection, the RRC signaling used to configure any cell among the K RRC signalings is deleted.

[0175] In one embodiment, the phrase "applying RRC signaling used to configure one cell among the K RRC signalings" means applying one RRC signaling used to configure one cell among the K RRC signalings.

[0176] In one embodiment, the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes the first timer expiring and the first timer being started upon application of any one of the K RRC signalings.

[0177] In one subembodiment of this embodiment, the first timer is T304.

[0178] In one subembodiment of this embodiment, the first timer is T304a.

[0179] In one subembodiment of this embodiment, the first timer is T304b.

[0180] As a subembodiment of this embodiment, if any one of the K RRC signalings is applied, a first timer is started.

[0181] As a subembodiment of this embodiment, the condition for stopping the first timer includes successful completion of random access to a cell configured to apply any one of the K RRC signalings.

[0182] As a subembodiment of this embodiment, any one of the K RRC signalings is used to configure the first timer.

[0183] As a subembodiment of this embodiment, the condition for stopping the first timer includes any one of the K RRC signalings being successfully applied.

[0184] In one embodiment, applying any one of the K RRC signalings means executing any one of the K RRC signalings.

[0185] The meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes N cell selections being performed in cells configured by the K RRC signalings before successfully applying one of the K RRC signalings.

[0186] In one embodiment, the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes N cell selections being performed consecutively in cells configured by the K RRC signalings before one of the K RRC signalings can be successfully applied.

[0187] In one embodiment, the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes N attempts to apply RRC signaling among the K RRC signalings before successfully applying one of the K RRC signalings.

[0188] In one embodiment, the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes N consecutive attempts to apply an RRC signaling among the K RRC signalings before successfully applying one of the K RRC signalings.

[0189] In one embodiment, the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes that after N attempts at the K RRC signalings, none of the K RRC signalings are successfully applied.

[0190] In one embodiment, the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes that all N attempts to apply the RRC signaling among the K RRC signalings are unsuccessful.

[0191] In one embodiment, N is greater than one.

[0192] In one embodiment, N is equal to one.

[0193] In one embodiment, the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes that after receiving the second signaling, all N attempts to apply the RRC signaling among the K RRC signalings are unsuccessful.

[0194] In one embodiment, the application of RRC signaling to configure the selected cell in N cell selections among the K RRC signalings is unsuccessful.

[0195] In one embodiment, the meaning of the phrase "any one of the K RRC signalings cannot be applied successfully" includes that the quality of the cell configured by any one of the K RRC signalings does not satisfy the first quality requirement.

[0196] In one embodiment, the first quality requirement comprises a layer 3 based measurement result being worse than a first threshold.

[0197] In one embodiment, K RRC signalings are used to configure the first threshold.

[0198] In one embodiment, the first threshold is fixed.

[0199] In one embodiment, the first threshold is determined by an internal algorithm of the first node.

[0200] In one embodiment, the first quality requirement is the S standard.

[0201] In one embodiment, K RRC signalings are used to configure the first quality requirement.

[0202] In one embodiment, an RRC message including K RRC signalings is used to configure the first quality requirement.

[0203] In one embodiment, the first quality requirement is any one of the K RRC signalings. The RSRP (referred signal received power) of the cell formed by the two is lower than a first threshold.

[0204] In one subembodiment of this embodiment, the RSRP is RSRP processed based on an L3 filter.

[0205] In one embodiment, the meaning of the phrase "any one of the K RRC signalings cannot be applied successfully" includes that the measurement results of a cell configured by any one of the K RRC signalings do not satisfy the first quality requirement.

[0206] In one embodiment, the meaning of the phrase "any one of the K RRC signalings cannot be applied successfully" includes that the measurement results of a cell configured by any one of the K RRC signalings do not satisfy the first quality requirement within one time window.

[0207] In one embodiment, one time window is constituted by any one of the K RRC signalings.

[0208] In one embodiment, the first cell identity is a first cell identity, and the first cell identity is configured for the target SpCell.

[0209] In one embodiment, the meaning of the phrase "a first cell identity is configured for the target SpCell" includes that the target SpCell is the cell indicated by the first cell identity searched on a particular time-frequency resource.

[0210] In one embodiment, the meaning of the phrase "the first cell identity is configured for the target SpCell" is that if the K RRC signalings indicate downlink frequency information, the target SpCell is the cell indicated by the first cell identity on the SSB (Synchronization Signal Block) frequency indicated by the downlink frequency information.

[0211] In one embodiment, the phrase "the first cell identity is configured for the target SpCell" means that if the K RRC signalings do not indicate downlink frequency information, the target SpCell is the cell indicated by the first cell identity on the SSB (Synchronization Signal Block) frequency of the source cell of the first node.

[0212] In one embodiment, the meaning of the phrase "a first cell identity is configured for the target SpCell" includes that the cell determined by the first cell identity is the target SpCell.

[0213] In one embodiment, the target SpCell corresponds to the source cell or source SpCell.

[0214] In one embodiment, the source cell or source SpCell is the cell from which the first node receives the K RRC signalings.

[0215] In one embodiment, the source cell or source SpCell is the cell before handover of the first node.

[0216] In one embodiment, the first cell identity is or includes a cell index.

[0217] In one embodiment, the first cell identity is or includes an NCGI (NR Cell Global Identity).

[0218] In one embodiment, after the execution of the signaling for configuring the first cell among the K RRC signalings is completed, the target SpCell becomes the SpCell of the first node.

[0219] In one embodiment, the execution of each of the K RRC signalings depends on the second signaling.

[0220] In one embodiment, the execution of one of the K RRC signalings depends on a second signaling.

[0221] In one embodiment, the execution of the first RRC signaling of the K RRC signalings after receiving the second signaling depends on the second signaling.

[0222] In one embodiment, the execution of RRC signaling other than the first RRC signaling executed among the K RRC signalings after receiving the second signaling depends on the inability to successfully apply the RRC signaling among the K RRC signalings.

[0223] In one embodiment, when the second timer is not running, the execution of the K RRC signalings depends on the second signaling.

[0224] In one embodiment, when the second timer is not running, the execution of the K RRC signalings depends on the second signaling.

[0225] In one embodiment, if the RRC connection re-establishment is not initiated, the execution of the K RRC signalings depends on the second signaling.

[0226] In one embodiment, if there is no ongoing RRC connection re-establishment process, the execution of the K RRC signalings depends on the second signaling.

[0227] In one embodiment, the K RRC signalings are not automatically executed after reception.

[0228] In one embodiment, the K RRC signaling is not acted upon immediately upon reception.

[0229] In one embodiment, the execution of each of the K RRC signalings needs to be triggered.

[0230] In one embodiment, the condition for triggering the execution of any one of the K RRC signalings includes receiving a second signaling.

[0231] In one embodiment, the condition for triggering the execution of any one of the K RRC signalings includes the second signaling being received when the second timer is not running.

[0232] In one embodiment, the condition for triggering the execution of any one of the K RRC signalings includes receiving the second signaling when the second timer is running.

[0233] In one embodiment, the conditions for triggering the execution of any one of the K RRC signalings include the cell selected in the RRC connection re-establishment being the target SpCell.

[0234] In one embodiment, the condition for triggering the execution of any one of the K RRC signalings includes the selected cell being the target SpCell when the second timer is running.

[0235] In one embodiment, when the second timer is running, the second signaling triggers one of the K RRC signalings.

[0236] In one embodiment, when the second timer is running and the selected cell is the target SpCell, one of the K RRC signalings is performed.

[0237] In one embodiment, when the second timer is running and the selected cell is not the target SpCell, the K RRC signalings are not performed.

[0238] In one embodiment, when the RRC re-establishment process is initiated and the selected cell is the target SpCell, K RRC signalings are performed.

[0239] In one embodiment, when the RRC re-establishment process is initiated and the selected cell is not the target SpCell, K RRC signaling is not performed.

[0240] In one embodiment, when there is an ongoing RRC re-establishment process and the selected cell is not the target SpCell, the K RRC signalings are not performed.

[0241] In one embodiment, each of the K RRC signalings includes at least a first field.

[0242] In one embodiment, the first field of each of the K RRC signalings constitutes the cell identity of the target SpCell.

[0243] In one embodiment, the first field of each of the K RRC signalings includes a first cell identity.

[0244] In one embodiment, the first field of each of the K RRC signalings configures the downlink frequency information of the target SpCell.

[0245] In one embodiment, the first field of each of the K RRC signalings constitutes uplink access information of the target SpCell.

[0246] In one embodiment, the first field of each of the K RRC signalings configures the uplink resources of the target SpCell.

[0247] In one embodiment, the first field of each of the K RRC signalings is a target It configures the BWP (bandwidth part) of the SpCell.

[0248] In one embodiment, the first field of each of the K RRC signalings configures the power of the target SpCell.

[0249] In one embodiment, the first field of each of the K RRC signalings configures the timing advance of the target SpCell.

[0250] In one embodiment, the first field of each of the K RRC signalings constitutes a reference signal for the target SpCell.

[0251] In one embodiment, the first field of each of the K RRC signalings constitutes a control channel of the target SpCell.

[0252] In one embodiment, the first field of each of the K RRC signalings configures the spatial parameters of the target SpCell.

[0253] In one embodiment, the second signaling explicitly indicates whether to perform the K RRC signalings.

[0254] In one embodiment, the second signaling explicitly indicates which one or more of the K RRC signalings should be performed.

[0255] In one embodiment, the second signaling includes a configuration identity or a configuration index of one of the K RRC signalings.

[0256] In one embodiment, if the second signaling includes a configuration identity or a configuration index of one of the K RRC signalings, execution of one of the K RRC signalings is triggered.

[0257] In one embodiment, the second signaling indicates a target SpCell.

[0258] In one embodiment, if the second signaling indicates a target SpCell, one of the K RRC signalings is executed.

[0259] In one embodiment, the second signaling indicates resources or reference signals of the target SpCell.

[0260] In one embodiment, if the second signaling indicates a resource or reference signal of the target SpCell, execution of one of the K RRC signalings is triggered.

[0261] In one embodiment, before receiving the second signaling, the first node transmits a first signal.

[0262] In one embodiment, the first signal is transmitted after receiving K RRC signalings.

[0263] In one embodiment, the second signaling is received after transmitting the first signal.

[0264] In one embodiment, the first signal is used to trigger the second signaling. .

[0265] In one embodiment, the first signal includes a measurement result.

[0266] In one embodiment, the first signal includes a measurement of L1.

[0267] In one embodiment, the first signal includes an L1-RSRP.

[0268] In one embodiment, the first signal includes an identity or index.

[0269] As a subembodiment of this embodiment, one identity or index is associated with one of the K RRC signalings.

[0270] As a subembodiment of this embodiment, one identity or index is associated with the target SpCell.

[0271] In one embodiment, the RRC connection re-establishment includes sending an RRCReestablishmentRequest message.

[0272] In one embodiment, the RRC connection re-establishment includes suspending SRB1.

[0273] In one embodiment, the RRC connection re-establishment includes suspending SRB0 and all RBs other than MRB (MBS Radio Bearer) for broadcast purposes.

[0274] In one embodiment, the RRC connection re-establishment includes suspending the current service.

[0275] In one embodiment, the RRC connection re-establishment includes releasing the SCG or SCell.

[0276] In one embodiment, the RRC connection re-establishment includes resetting the MAC.

[0277] In one embodiment, the RRC connection re-establishment includes starting a T311 timer.

[0278] In one embodiment, the RRC connection re-establishment includes releasing the spCellConfig.

[0279] In one embodiment, the RRC connection re-establishment includes releasing or deleting at least one of the K RRC signalings.

[0280] In one embodiment, the RRC connection re-establishment includes cell selection.

[0281] In one embodiment, initiating the RRC connection re-establishment is for re-establishing the RRC connection.

[0282] In one embodiment, the reason for initiating the RRC connection re-establishment includes detecting the expiration of the T316 timer.

[0283] In one embodiment, the reasons for initiating the RRC connection re-establishment include detecting that a radio link failure has occurred in the MCG and that T316 is not configured.

[0284] In one embodiment, the reasons for initiating the RRC connection re-establishment include a failure of the reconfiguration with MCG synchronization.

[0285] In one embodiment, the reasons for initiating the RRC connection re-establishment include lower layer indication of failure of integrity protection verification of SRB1 (Signaling Radio Bearer 1) or SRB2.

[0286] In one embodiment, entering the RRC idle state means losing the RRC connection with the access network.

[0287] In one embodiment, communication with the serving cell requires exiting the RRC idle state.

[0288] In one embodiment, communication with the serving cell requires an RRC connection.

[0289] In one embodiment, the logical channels occupied by the K RRC signaling include a DCCH (Dedicated Control Channel).

[0290] In one embodiment, the K RRC signaling uses encryption.

[0291] In one embodiment, the K RRC signaling uses integrity protection.

[0292] In one embodiment, the second signaling uses encryption.

[0293] In one embodiment, the second signaling uses integrity protection.

[0294] In one embodiment, the second signaling does not use encryption.

[0295] In one embodiment, the second signaling does not use integrity protection.

[0296] In one embodiment, the second signaling is for the first node.

[0297] In one embodiment, the second signaling is intended for the first node only.

[0298] In one embodiment, the physical channel occupied by the second signaling includes a PDCCH (Physical Downlink Control Channel).

[0299] In one embodiment, the physical channel occupied by the second signaling includes a PDSCH (Physical Downlink Shared Channel).

[0300] In one embodiment, "performing one of the K RRC signalings" means performing a part of the fields included in one of the K RRC signalings.

[0301] In one embodiment, "performing one of the K RRC signalings" means performing all fields included in one of the K RRC signalings.

[0302] In one embodiment, "executing one of the K RRC signalings" means executing all information elements included in one of the K RRC signalings. be.

[0303] In one embodiment, "performing one of the K RRC signalings" means performing all fields, subfields, etc. included in one of the K RRC signalings.

[0304] In one embodiment, the meaning of "executing one of the K RRC signalings" includes at least executing a reconfigurationWithSync included in one of the K RRC signalings.

[0305] In one embodiment, the meaning of "executing one of the K RRC signalings" includes at least executing a first field included in one of the K RRC signalings.

[0306] In one embodiment, the upper layer includes an RRC layer.

[0307] In one embodiment, the lower layer includes a MAC layer.

[0308] In one embodiment, the lower layer includes a physical layer.

[0309] In one embodiment, the lower layers include protocol layers below the RRC layer.

[0310] In one embodiment, the first field included in the K RRC signalings includes reconfigurationWithSync.

[0311] In one embodiment, the K RRC signalings do not include reconfigurationWithSync.

[0312] In one embodiment, performing the K RRC signaling includes using a new C-RNTI.

[0313] In one embodiment, the new C-RNTI is the identity indicated by the newUE-Identity field.

[0314] In one embodiment, the first information includes an L1-based measurement result and an L3-based measurement result.

[0315] In one embodiment, the L1-based measurement results include L1-RSRP.

[0316] In one embodiment, the L3-based measurement results include RSRP.

[0317] In one embodiment, the L1-based measurements include measurements carried by the first signal.

[0318] In one embodiment, the L3-based measurements include the current RSRP.

[0319] In one embodiment, the L3-based measurement result includes an RSRP when any one of the K RRC signalings cannot be applied successfully.

[0320] In one embodiment, L1 measurements generally refer to physical layer measurements.

[0321] In one embodiment, L1 measurements generally refer to measurements using an L1 filter.

[0322] In one embodiment, L1 measurements generally refer to RRC layer measurements or measurements sent via RRC messages.

[0323] In one embodiment, the first information is used to indicate the reason for the cell switch failure.

[0324] As a subembodiment of this embodiment, the reason for the cell switch failure includes a random access failure.

[0325] As a subembodiment of this embodiment, the reason for the cell switch failure includes the expiration of a timer.

[0326] As a subembodiment of this embodiment, the reason for the cell switch failure includes an inability to meet the first quality requirement.

[0327] As a subembodiment of this embodiment, reasons for cell switch failure include reaching or exceeding a maximum number of attempts.

[0328] As a subembodiment of this embodiment, the maximum number of attempts is the maximum number of attempts to apply any one of the K RRC signalings.

[0329] In one embodiment, the first information is used to indicate a first cell.

[0330] In one embodiment, the first information includes an identity of the first cell.

[0331] In one embodiment, the first information indicates that the first cell is a target cell.

[0332] In one embodiment, the first cell is not the source of the K RRC signalings.

[0333] Embodiment 2 Embodiment 2 shows a schematic diagram of one network architecture according to the present application, as shown in FIG.

[0334] FIG. 2 illustrates a network architecture 200 for 5G NR, LTE (Long Term Evolution), and LTE-A (Long Term Evolution-Advanced) systems. The 5G NR or LTE network architecture 200 may be referred to as a 5G system (5GS) / EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS / EPS 200 may comprise one or more of a user equipment (UE) 201, a next-generation radio access network (NG-RAN) 202, a 5G core network (5GC) / evolved packet core (EPC) 210, a home subscriber server (HSS) / unified data management (UDM) 220, and internet services 230. The 5GS / EPS may interconnect with other access networks, although these entities / interfaces are not shown for simplicity. As shown in the figure, the 5GS / EPS provides packet-switched services; however, those skilled in the art will understand that the various concepts presented throughout this application may also be used in conjunction with networks or other access networks that provide circuit-switched services. It will be readily understood that the NG-RAN can be extended to a cellular network. The NG-RAN comprises an NR Node B (gNB) 203 and other gNBs 204. The gNB 203 provides user plane and control plane protocol termination for the UE 201. The gNB 203 can be connected to the other gNBs 204 via an Xn interface (e.g., backhaul). The gNB 203 can also be referred to as a base station, base transceiver station, radio base station, radio transmit / receive device, transmit / receive device function, basic service set (BSS), extended service set (ESS), TRP (transmit / receive point), or some other suitable terminology. The gNB 203 provides an access point to the 5GC / EPC 210 for the UE 201. Examples of UE 201 include a mobile phone, a smartphone, a Session Initiation Protocol (SIP) phone, a laptop computer, a personal digital assistant (PDA), 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 communications device, a land vehicle, an automobile, a wearable device, or any other device with similar functionality. Those skilled in the art may also refer to UE 201 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 communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB 203 is connected to the 5GC / EPC 210 via an S1 / NGS1 / NG interface. The 5GC / EPC 210 includes an MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MMEs / AMFs / SMFs 214, an S-GW (Service Gateway) / UPF (User Plane Function) 212, and a P-GW (Packet Data Network Gateway) / UPF 213.The MME / AMF / SMF 211 is a control node that handles signaling between the UE 201 and the 5GC / EPC 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW / UPF 212, which is itself connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF 213 is connected to the Internet Services 230. The Internet Services 230 includes Internet Protocol services corresponding to operators, and may specifically include the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0335] In one embodiment, the first node in this application is the UE 201.

[0336] In one embodiment, the base station of the second node in this application is gNB203.

[0337] In one embodiment, the radio link from UE 201 to the NR Node B is an uplink.

[0338] In one embodiment, the radio link from the NR Node B to the UE 201 is a downlink.

[0339] In one embodiment, the UE 201 supports relay transmission.

[0340] In one embodiment, the UE 201 comprises a mobile phone.

[0341] In one embodiment, the UE 201 is a vehicle, including an automobile.

[0342] In one embodiment, the gNB203 is a macrocell base station.

[0343] In one embodiment, the gNB203 is a microcell base station.

[0344] In one embodiment, the gNB203 is a picocell base station.

[0345] In one embodiment, the gNB203 is a flying platform device.

[0346] In one embodiment, the gNB203 is a satellite device.

[0347] Embodiment 3 Embodiment 3 illustrates a schematic diagram of one embodiment of a radio protocol architecture for a user plane and a control plane according to the present application, as shown in FIG. 3. FIG. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300. FIG. 3 illustrates a radio protocol architecture for a control plane 300 between a first node (a UE, a gNB, or a satellite or aircraft in an NTN) and a second node (a gNB, a UE, or a satellite or aircraft in an NTN), or between two parts of a UE, using three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer is referred to herein as PHY 301. Layer 2 (L2 layer) 305 is above PHY 301 and is responsible for the link between the first node and the second node and between two UEs via PHY 301. The L2 layer 305 includes a MAC (Media Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate in the second node. 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-cell mobility support between the first node and the second node. 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 channels and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within one cell between the first node and the second node. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second node and the first node.The PC5-S (PC5 signaling protocol) sublayer 307 is responsible for processing the signaling protocol of the PC5 interface. The radio protocol architecture of the user plane 350 includes Layer 1 (L1 layer) and Layer 2 (L2 layer). The radio protocol architecture for the first node and the second node in the user plane 350 is substantially the same 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, except that 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 an SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS flows and data radio bearers (DRBs) to support service diversity. An SRB may be considered a service or interface provided by the PDCP layer to a higher layer, such as an RRC layer. In an NR system, SRBs are classified as SRB1, SRB2, and SRB3. For secondary link communications, the UE includes SRB4, which are used to transmit different types of control signaling. SRBs are bearers between the UE and the access network and are used to transmit control signaling, including RRC signaling, between the UE and the access network. SRB1 has special meaning for the UE. After each UE establishes an RRC connection, an SRB1 exists to transmit RRC signaling. Most signaling is transmitted over SRB1. If SRB1 is interrupted or unavailable, the UE must perform RRC re-establishment. SRB2 is generally only used to transmit NAS signaling or security-related signaling. A UE may not be configured with SRB3. Except for emergency services, the UE must establish an RRC connection with the network for subsequent communications. Although not shown, the first node may have several upper layers above layer L2 355. In addition, it also includes a network layer (e.g., IP layer) terminated at the P-GW on the network side and an application layer terminated at other terminals of the connection (e.g., remote UE and server). For a UE related to relay service, its control plane may also include an adaptation sublayer SRAP (Sidelink Relay Adaptation Protocol) 308, and its user plane may also include an adaptation sublayer SRAP 358. The introduction of the adaptation layer helps lower layers, such as MAC layers, such as RLC layers, to multiplex and / or distinguish data from multiple source UEs. For nodes not related to relay communication, PC5-S 307, SRAP 308, and SRAP 358 are not required in the communication process.

[0348] As an embodiment, the radio protocol architecture of FIG. 3 is applicable to the first node in this application.

[0349] In one embodiment, the radio protocol architecture of FIG. 3 is applicable to the second node in this application.

[0350] In one embodiment, the K RRC signalings in this application are generated in the RRC 306 .

[0351] In one embodiment, the first information in this application is generated in the RRC 306 or the MAC 302 .

[0352] In one embodiment, the second signaling in this application is generated in MAC 302 or PHY 301.

[0353] In one embodiment, the first signaling in this application is generated in MAC 302 or PHY 301 .

[0354] Embodiment 4 Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application, as shown in Figure 4. Figure 4 is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in an access network.

[0355] The first communication device 450 comprises a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, and optionally also a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmit device / receive device 454, and an antenna 452.

[0356] The second communication device 410 includes a controller / processor 475, a memory 476, a receiver processor 470 , a transmit processor 416 , and optionally a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmit device / receive device 418 , and an antenna 420 .

[0357] For transmissions from the second communication device 410 to the first communication device 450, upper layer data packets from the core network are provided to a controller / processor 475 in the second communication device 410. The controller / processor 475 implements the functions of the L2 layer (Layer 2). For transmissions 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 allocation of radio resources 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 of the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) and mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), and M-quadrature amplitude modulation (M-QAM)) in the second communication device 410. 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 subcarriers, multiplexes each spatial stream with a reference signal (e.g., a pilot frequency) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multi-carrier symbol stream.Each transmitting device 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream and then provides the radio frequency stream to a different antenna 420 .

[0358] In a transmission from the second communication device 410 to the first communication device 450, each receiving device 454 in the first communication device 450 receives a signal via a corresponding antenna 452. Each receiving device 454 recovers the information modulated onto a radio frequency carrier, converts the radio frequency stream to a baseband multi-carrier symbol stream, and provides the baseband multi-carrier symbol stream to a receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receive processor 458 performs receive analog precoding / beamforming operations on the baseband multi-carrier symbol stream from the receiving device 454. After the receive analog precoding / beamforming operations, the receive processor 456 converts the baseband multi-carrier symbol stream from the time domain to the frequency domain using a fast Fourier transform (FFT). In the frequency domain, the physical layer data signal and reference signal are demultiplexed by the receive processor 456, the reference signal is used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receive processor 458 to recover all spatial streams destined for the first communication device 450. The symbols on each spatial stream are demodulated and recovered in the receive processor 456 to generate soft decisions. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the second communication device 410 on the physical channel. The upper layer data and control signals are then provided to a controller / processor 459. The controller / processor 459 implements the functionality 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 also be referred to as a computer-readable medium. For transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover 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 be provided to L3 for L3 processing.

[0359] In a transmission from the first communication device 450 to the second communication device 410, upper layer data packets are provided to the controller / processor 459 using the data source 467 in the first communication device 450. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functions in 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 performs header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmission of lost packets and signaling to the second communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming processing. The transmit processor 468 then modulates the generated spatial streams into multi-carrier / single-carrier symbol streams, which are provided by the transmit devices 454 to different antennas 452 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmit device 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides the radio frequency symbol stream to the antenna 452.

[0360] For transmission from the first communication device 450 to the second communication device 410, the functions at the second communication device 410 are similar to the receiving functions at the first communication device 450 described for transmission from the second communication device 410 to the first communication device 450. Each receiving device 418 receives radio frequency signals via a corresponding antenna 420, converts the received radio frequency signals to baseband signals, and provides the baseband signals to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement the functionality of the L1 layer. The controller / processor 475 implements the functionality of the L2 layer. The controller / processor 475 may be associated with a memory 476 that stores program codes and data. The memory 476 may also be referred to as a computer-readable medium. For transmissions from the first communication device 450 to the second communication device 410, the controller / processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover upper layer data packets from the UE 450. The upper layer data packets from the controller / processor 475 may be provided to the core network.

[0361] In one embodiment, the first communication device 450 comprises at least one processor and at least one memory, the at least one memory being a computer processor. and a program code including at least one memory and configured for use with at least one processor, the program code including at least one memory and configured for use with at least one processor, the first communication device 450 receiving K RRC signaling, each of the K RRC signalings being used to configure at least one cell, K being an integer greater than 1; receiving second signaling, the second signaling being used to trigger application of one of the K RRC signalings; and in response to any one of the K RRC signalings not being able to be successfully applied, and performing a first set of operations, the first set of operations including cell selection, the first cell being a cell selected in the cell selection included in the first set of operations; whether the first set of operations includes transmitting first information depends on whether the first cell is configured by at least one of the K RRC signalings, the first set of operations includes transmitting the first information only if the first cell is not configured by any of the K RRC signalings; and successfully applying the one RRC signaling includes applying the one cell configured by the RRC signaling as an SpCell.

[0362] In one embodiment, the first communication device 450 comprises a memory storing a computer-readable program of instructions, which when executed by at least one processor generates actions, the actions including receiving K RRC signalings, each of the K RRC signalings being used to configure one cell, where K is an integer greater than 1; receiving second signaling, the second signaling being used to trigger application of one of the K RRC signalings; and receiving a second signaling when any one of the K RRC signalings can be successfully applied. performing a first set of operations in response to the fact that the first cell is not configured by the RRC signaling, the first set of operations including cell selection, the first cell being a cell selected in the cell selection included in the first set of operations; whether the first set of operations includes transmitting first information depends on whether the first cell is configured by at least one of the K RRC signalings, the first set of operations including transmitting the first information only if the first cell is not configured by any of the K RRC signalings; and successfully applying the one RRC signaling including applying the one cell configured by the RRC signaling as an SpCell.

[0363] In one embodiment, the first communication device 450 corresponds to the first node in this application.

[0364] In one embodiment, the second communication device 410 corresponds to a second node in this application.

[0365] In one embodiment, the first communication device 450 is a UE.

[0366] In one embodiment, the first communication device 450 is a vehicle-mounted terminal.

[0367] In one embodiment, the second communication device 450 is a relay device.

[0368] In one embodiment, the second communication device 410 is a satellite.

[0369] In one embodiment, the second communication device 410 is an aircraft.

[0370] In one embodiment, the second communication device 410 is a base station.

[0371] In one embodiment, the receiving device 454 (including the antenna 452), the receiving processor 456, and the controller / processor 459 are used to receive K RRC signalings in this application.

[0372] In one embodiment, the receiving device 454 (including the antenna 452), the receiving processor 456, and the controller / processor 459 are used to receive the second signaling in this application.

[0373] In one embodiment, the transmitting device 454 (including the antenna 452), the transmitting processor 468, and the controller / processor 459 are used to transmit a first signal in this application.

[0374] In one embodiment, the transmitting device 454 (including the antenna 452), the transmitting processor 468, and the controller / processor 459 are used to transmit first information in the present application.

[0375] Embodiment 5 Embodiment 5 shows a flowchart of wireless signal transmission according to an embodiment of the present application, as shown in Figure 5. In Figure 5, U01 corresponds to the first node of the present application. It should be noted that the order in this example does not limit the signal transmission order and implementation order in the present application, and steps F51 and F52 are optional.

[0376] For the first node U01, in step S5101, K RRC signalings are received, in step S5102, a first signal is transmitted, in step S5103, a second signaling is received, in step S5104, one of the K RRC signalings is applied, and in step S5105, first information is transmitted.

[0377] For the second node U02, in step S5201, K RRC signalings are transmitted, in step S5202, a first signal is received, in step S5203, a second signaling is transmitted, and in step S5204, a first signal is received.

[0378] In embodiment 5, each of the K RRC signalings is used to configure at least one cell, where K is an integer greater than 1; the second signaling is used to trigger application of one of the K RRC signalings; any one of the K RRC signalings that cannot be successfully applied triggers execution of a first set of operations; the first set of operations includes cell selection, and the first cell is a cell selected by the cell selection included in the first set of operations; whether the first set of operations includes transmitting first information depends on whether the first cell is configured by at least one of the K RRC signalings; only if the first cell is not configured by any of the K RRC signalings, the first set of operations includes transmitting the first information; and successfully applying the one RRC signaling includes applying the one cell configured by the RRC signaling as an SpCell.

[0379] In one embodiment, the second node U02 is a base station.

[0380] In one embodiment, the second node U02 is a network device.

[0381] In one embodiment, the second node U02 is the source cell of the first node U01.

[0382] In one embodiment, the second node U02 is the source SpCell of the first node U01.

[0383] In one embodiment, the second node U02 is the PCell of the first node U01 when receiving the K RRC signalings.

[0384] In one embodiment, the second node U02 is the PSCell of the first node U01 when receiving the K RRC signalings.

[0385] In one embodiment, the first node U01 performs a handover from the second node U02 to the target SpCell.

[0386] In one embodiment, each of the K RRC signalings includes pre-configured parameters for handover.

[0387] In one embodiment, after the successful execution of step S5104 is completed by the first node U01, the SpCell of the first node U01 is a cell configured by one of the K RRC signalings.

[0388] In one embodiment, the air interface between the first node U01 and the second node U02 is a Uu interface.

[0389] In one embodiment, the first node U01 is in an RRC connected state.

[0390] In one embodiment, the K cells configured by the RRC signaling are nodes other than the second node U02.

[0391] In one embodiment, after the second node U02 receives the first signal, a decision to switch cells is made.

[0392] In one embodiment, the second node U02 makes a cell switching decision based on a first signal, where the first signal includes an L1 measurement result or a target cell recommended based on the L1 measurement result.

[0393] In one subembodiment of this embodiment, the target cell includes the first cell.

[0394] In one embodiment, the meaning of L3 (Layer 3) based measurements includes processing the measurement data using an L3 filter.

[0395] In one embodiment, the meaning of L1 (Layer 1) based measurements includes processing the measurement data using an L1 filter.

[0396] In one embodiment, L3 measurements are smoother than L1 measurements, but take longer to acquire.

[0397] In one embodiment, L1 measurement results can be acquired more quickly but are more likely to cause ping-pong handovers, while L2 results are more stable but require a longer acquisition time, which can lead to disconnections before handovers. The method proposed in this application may allow for quick handovers between multiple candidate cells, thereby avoiding disconnections. ,Also, it avoids the problem of data interruption caused by traditional ping-pong handover.

[0398] In one embodiment, the first node U01 does not need to use random access to at least one cell configured by the K RRC signaling.

[0399] In one embodiment, K RRC signalings are used to form the first signal.

[0400] In one embodiment, step S5101 precedes step S5102.

[0401] In one embodiment, step S5101 precedes step S5103.

[0402] In one embodiment, step S5104 follows step S5103.

[0403] In one embodiment, step S5103 follows step S5102.

[0404] In one embodiment, step S5201 precedes step S5202.

[0405] In one embodiment, step S5203 follows step S5202.

[0406] In one embodiment, the first signal is used to trigger the second signaling.

[0407] In one embodiment, the meaning of "the execution of the K RRC signalings depends on the second signaling" includes that the K RRC signalings are not executed immediately after being received or are not executed automatically, but wait for the second signaling, and one of the K RRC signalings is executed only when it is triggered by the second signaling.

[0408] In one embodiment, the first node U01 starts a third timer in response to receiving the second signaling, where the third timer is a MAC (Media Access Control) sublayer timer.

[0409] In one embodiment, the condition for stopping the third timer includes receiving a fourth signal.

[0410] In one subembodiment of this embodiment, the fourth signal is DCI.

[0411] As a subembodiment of this embodiment, the fourth signal is transmitted by the second node U02.

[0412] In one subembodiment of this embodiment, the fourth signal is an ACK.

[0413] In one embodiment, the fourth signal is used to confirm that the handover was successful.

[0414] In one embodiment, the fourth signal is used to confirm that the handover is complete.

[0415] In one embodiment, the fourth signal is used to confirm that execution of one of the K RRC signalings has been completed.

[0416] In one embodiment, the fourth signal is used to confirm that the execution of the second signaling is complete.

[0417] In one embodiment, the condition for stopping the third timer includes completion of random access to the target SpCell.

[0418] In one embodiment, the condition for stopping the third timer includes the completion of execution of one of the K RRC signalings.

[0419] In one embodiment, the expiration of a third timer is used to determine failure.

[0420] In one embodiment, the expiration of the third timer is used to determine the failure of the cell handover.

[0421] In one embodiment, the expiration of the third timer is used to determine failure of execution of one of the K RRC signalings.

[0422] In one embodiment, the expiration of the third timer is used for RRC connection re-establishment.

[0423] In one embodiment, the expiration of the third timer is used to initiate beam failure recovery.

[0424] In one embodiment, the expiration of the third timer is used to retransmit the information contained in the first signal.

[0425] In one embodiment, the expiration of the third timer is used to perform configuration of an SpCell other than the target SpCell.

[0426] In one embodiment, the expiration of the third timer is used to determine that a cell other than the target SpCell is the new target SpCell and perform the corresponding configuration.

[0427] In one embodiment, the expiry of the third timer is used to trigger a fallback to a configuration before the execution of one of the K RRC signalings.

[0428] In one embodiment, the expiration of the third timer is used to fall back to communication with the second node U02.

[0429] In one embodiment, the K RRC signalings or the RRC messages carrying the K RRC signalings include corresponding configurations.

[0430] In one embodiment, the signaling other than the K RRC signalings includes corresponding configurations.

[0431] In one embodiment, the corresponding configuration includes at least the spCellConfig for the new target SpCell.

[0432] In one embodiment, the execution of the corresponding configuration does not depend on receiving signaling from the second node U02.

[0433] In one embodiment, the third timer is started upon transmission of the first signal.

[0434] In one embodiment, the fourth timer is started upon transmission of the first signal.

[0435] In one embodiment, before the expiration of the fourth timer, the first node U01 no longer transmits a MAC CE with the same name as the MAC CE included in the first signal.

[0436] In one embodiment, the first node U01 transmits a MAC CE with the same name as the MAC CE included in the first signal only after the expiration of the fourth timer.

[0437] In one embodiment, the expiration of the fourth timer is used to trigger a retransmission of the information contained in the first signal.

[0438] In one embodiment, the expiration of the fourth timer is used to trigger the transmission of a fifth signal, where the fifth signal includes the same MAC CE as the first signal.

[0439] In one embodiment, the fifth signal is a retransmission of the first signal.

[0440] In one embodiment, the fifth signal is generated at the physical layer.

[0441] In one embodiment, the fifth signal is generated at the MAC layer.

[0442] In one embodiment, the first signal includes UCI (Uplink Control Information).

[0443] In one embodiment, receipt of the second signaling is used to stop the third timer.

[0444] In one embodiment, the expiration of the fourth timer is used to determine that a cell other than the target SpCell is the new target SpCell and perform the corresponding configuration.

[0445] As a subembodiment of this embodiment, the K RRC signalings include corresponding configurations.

[0446] As a subembodiment of this embodiment, the corresponding configuration includes at least the spCellConfig for the new target SpCell.

[0447] As a subembodiment of this embodiment, the execution of the corresponding configuration does not depend on receiving signaling from the second node U02.

[0448] As a subembodiment of this embodiment, after performing the corresponding configuration, the first node U01 performs a handover to the new target SpCell.

[0449] In one embodiment, the second signaling is a DCI.

[0450] In one embodiment, the first node U01 monitors the PDCCH to receive the second signaling.

[0451] In one embodiment, the second signaling includes a MAC CE.

[0452] In one embodiment, the second signaling is unicast.

[0453] In one embodiment, the second signaling indicates a reference signal resource of the target SpCell.

[0454] In one embodiment, the second signaling indicates beam information of the target SpCell.

[0455] In one embodiment, the first signal indicates a reference signal resource of a recommended target SpCell.

[0456] In one embodiment, the first signal indicates beam information of a recommended target SpCell.

[0457] In one embodiment, in step S5104, applying one of the K RRC signalings includes applying a TCI (Transmission Configuration Indication) state.

[0458] As an embodiment, in step S5104, applying one of the K RRC signalings includes applying a TCI (Transmission Configuration Indication) state for the target SpCell.

[0459] As an embodiment, in step S5104, applying one of the K RRC signalings includes applying a TCI (Transmission Configuration Indication) state associated with the target SpCell.

[0460] In one embodiment, in step S5104, applying one of the K RRC signalings includes applying a unified TCI state.

[0461] In one embodiment, after receiving K RRC signalings, the first node U01 performs a feedback check.

[0462] In one embodiment, the K RRC signalings are included in at least one RRCReconfiguration message.

[0463] In one embodiment, the application of one of the K RRC signalings does not involve a random access process for a cell configured by one of the K RRC signalings.

[0464] In one embodiment, the first signal is used to report a measurement result, or to report a recommended target cell, or to report a recommended reference signal resource.

[0465] In one embodiment, the K RRC signalings include a second threshold, which is used to control transmission of the first signal.

[0466] In one subembodiment of this embodiment, the first signal is transmitted only if the quality of the current cell does not meet the second threshold.

[0467] In one subembodiment of this embodiment, the first signal is transmitted only if the measurement satisfies a second threshold.

[0468] In one embodiment, the K RRC signalings indicate random access resources for the cells configured by the K RRC signalings.

[0469] In one embodiment, a first signal is used to trigger a second signal.

[0470] In one embodiment, the first node U01 reports an indication of failure to an upper layer in response to the expiration of the fourth timer, the fourth timer being a MAC layer timer.

[0471] In one embodiment, the first information includes an RRC message.

[0472] In one embodiment, the first information is used to indicate whether at least one of the K RRC signalings has been successfully performed.

[0473] In one embodiment, the first information is used to include a record of K RRC signaling execution failures.

[0474] In one embodiment, the first information includes at least the identity of the target SpCell.

[0475] In one embodiment, the first information is used to indicate that a first event has been detected.

[0476] In one embodiment, the first information is recorded and / or transmitted only when there is an ongoing application of any one of the K RRC signalings.

[0477] In one embodiment, the first information includes MAC layer control signaling.

[0478] In one embodiment, the first information includes physical layer control information.

[0479] In one embodiment, the first information is a retransmission of the first signal.

[0480] In one embodiment, the name of the first information is different from the name of the first signal.

[0481] In one embodiment, the first signal is used to trigger the second signaling.

[0482] In one embodiment, the K RRC signalings are only valid within a first time window.

[0483] As a subembodiment of this embodiment, the K RRC signalings or an RRC message including the K RRC signalings indicate the first time window.

[0484] In one embodiment, in response to any one of the K RRC signalings not being successfully applied, the first node U01 stores failure information.

[0485] In one embodiment, when the first cell is not configured by any of the K RRC signalings, the first node U01 stores failure information.

[0486] In one embodiment, the first node U01 generates the first information according to the maintained failure information. Generate.

[0487] In one embodiment, after the first node U01 stores the failure information, the first node U01 indicates to the second node U02 that there is failure information available.

[0488] In one embodiment, when the second node U02 requests UE information or failure information from the first node U01, the first node U01 sends the first failure information.

[0489] In one embodiment, when the first set of operations includes transmitting the first information, the first set of operations includes storing information related to the inability to successfully apply the K RRC signalings.

[0490] In one embodiment, when the first set of operations includes transmitting first information, the first set of operations includes generating the first information according to stored information related to the inability to successfully apply the K RRC signalings.

[0491] In one embodiment, when the first set of operations includes transmitting the first information, the first set of operations includes generating the first information according to stored information related to the inability to successfully apply the K RRC signalings when receiving a request from the second node U02.

[0492] In one embodiment, the operations in the first set of operations do not have to be performed simultaneously.

[0493] In one embodiment, the actions in the first set of actions may be performed after receiving the request.

[0494] Embodiment 6 Embodiment 6, as shown in FIG. 6, illustrates a schematic diagram of a signaling format according to an embodiment of the present application.

[0495] In FIG. 6, field1, field2, field11, field12, and field21 are all fields.

[0496] In one embodiment, the format of the RRC messages in this application is based on the ISO ASN.1 related specification.

[0497] InformationElement1, InformationElement2, InformationElement11, and InformationElement12 in FIG. 6 are all RRC IEs.

[0498] In one embodiment, one RRC message includes one or more RRC IEs (Information Elements), such as the RRCMessage-IE in FIG.

[0499] In one embodiment, the RRCMessage-IE in FIG. 6 is one RRC IE.

[0500] In one embodiment, the RRCMessage-IE in FIG. 6 is an arbitrary IE in one RRC message.

[0501] In one embodiment, one RRC IE is the RR in FIG. 6, such as Information. Contains one or more fields, such as field1 and field2, contained in a CMessage-IE.

[0502] In one embodiment, the fields in FIG. 6 are applicable to the first field of this application.

[0503] In one embodiment, the fields in FIG. 6 are applicable to all fields and all RRC signaling in this application.

[0504] In one embodiment, the value of one field in the RRC message may be one RRC IE, for example, in FIG. 6, the value of field1 is InformationElement1.

[0505] In one embodiment, one field in an RRC message holds or carries one RRC IE, for example, in FIG. 6, field1 holds or carries InformationElement1.

[0506] In one embodiment, one field in the RRC message corresponds to one RRC IE, for example, field1 corresponds to InformationElement1 in FIG.

[0507] As an embodiment, in an RRC message, different fields may correspond to or carry or have the same RRC IE value, for example, field11 and field21 are both set to be InformationElement11.

[0508] In one embodiment, the IEs in the RRC message may comprise one or more layers.

[0509] In one embodiment, an IE in an RRC message may include one or more sub-IEs.

[0510] In one embodiment, an IE in an RRC message may include one or more sub-IEs and / or IEs of deeper layers.

[0511] In one embodiment, an IE in an RRC message may include one or more subfields and / or grandchild fields, for example, field1 is a subitem of the RRCMessage-IE, field11 is a grandchild item of the RRCMessage-IE, a subfield of an IE in one RRC message may also include its own subfields or grandchild fields, etc.

[0512] In one embodiment, the meaning of "one field is reconfigurationWithSync" includes the name of the one field being "reconfigurationWithSync".

[0513] In one embodiment, the first field includes a subfield ReconfigurationWithSync.

[0514] In one embodiment, each of the K RRC signalings includes one first field.

[0515] As a subembodiment of this embodiment, each of the K RRC signalings is llConfig.

[0516] In one embodiment, the first field is a sub-item for each of the K RRC signalings.

[0517] In one embodiment, the first field is a grandchild item of each of the K RRC signalings.

[0518] In one embodiment, the first field is a sub-item of a grandchild item of each of the K RRC signalings.

[0519] In one embodiment, a sub-item of an RRC IE is a first layer item included in an RRC IE.

[0520] In one embodiment, a grandchild item of an RRC IE is a second layer item included in the RRC IE.

[0521] In one embodiment, a sub-item of a grandchild item of an RRC IE is a third layer item included in the RRC IE.

[0522] In one embodiment, the first field of each of the K RRC signalings includes a second field, and the second field is reconfigurationWithSync.

[0523] In one embodiment, performing any signaling in this application includes performing a part of a field or a part of a subfield included in any signaling.

[0524] In one embodiment, the execution of any signaling in this application includes the execution of all fields contained in the any signaling.

[0525] In one embodiment, "executing all fields included in any signaling" means executing all sub-fields, sub-fields, etc. included in any signaling.

[0526] In one embodiment, the meaning of "executing all fields included in any signaling" includes executing information elements corresponding to any fields included in any signaling.

[0527] In one embodiment, "executing all fields contained in any signaling" means executing all information elements contained in any signaling.

[0528] In one embodiment, the arbitrary signaling is RRC signaling.

[0529] In one embodiment, the execution of any one of the K RRC signalings includes executing a portion of an information element, or a portion of a sub-information element, etc., included in any signaling.

[0530] In one embodiment, executing any one of the K RRC signalings includes executing all information elements contained in the signaling.

[0531] In one embodiment, executing the first field included in any one of the K RRC signalings includes executing an information element corresponding to the first field of any one of the signalings.

[0532] In one embodiment, executing the second field included in the first field included in any one of the K RRC signalings includes executing an information element corresponding to the second field included in the first field of any one of the K RRC signalings.

[0533] Embodiment 7 Embodiment 7, as shown in FIG. 7, illustrates a schematic diagram of a second signaling used to trigger the application of one of the K RRC signalings according to an embodiment of the present application.

[0534] In one embodiment, the second signaling indicates a handover to the target SpCell.

[0535] In one embodiment, the second signaling indicates the execution of at least one of the K RRC signalings.

[0536] In one embodiment, the second signaling includes an identity or configuration index of at least one of the K RRC signalings.

[0537] In one embodiment, the second signaling indicates a first reference signal resource, where the first reference signal resource is associated with the target SpCell.

[0538] In one embodiment, the second signaling indicates the cell group to which the SpCell belongs.

[0539] In one embodiment, the second signaling indicates an identity or index of an event or condition, the identity or index of the event or condition being associated with one of the K RRC signalings.

[0540] In one embodiment, the second signaling indicates one identity or configuration index, and the one identity or configuration index is associated with one of the K RRC signalings.

[0541] In one embodiment, the second signaling indicates one identity or configuration index, and the first identity or configuration index is included in the first signaling.

[0542] In one embodiment, the second signaling implicitly indicates one of the K RRC signalings.

[0543] In one embodiment, the second signaling is associated with one of the K RRC signalings, and receiving the second signaling indicates execution of one of the K RRC signalings.

[0544] In one embodiment, the logical channel identity of the second signaling is used to determine the execution of one of the K RRC signalings.

[0545] In one embodiment, the first candidate SpCell indicated by the second signaling is configured by one of the K RRC signalings, and selecting the first candidate SpCell as the target SpCell triggers the execution of one of the K RRC signalings.

[0546] In one embodiment, the second signaling indicates a first candidate target SpCell and a second candidate target SpCell.

[0547] In one embodiment, one of the K RRC signalings is for the first candidate target SpCell.

[0548] In one embodiment, one of the K RRC signalings is for the second candidate target SpCell.

[0549] In one embodiment, the first node arbitrarily selects the first candidate SpCell or the second candidate SpCell as the target SpCell.

[0550] In one embodiment, the first node preferentially selects the first candidate SpCell from the first candidate SpCell or the second candidate SpCell as the target SpCell.

[0551] In one embodiment, the second signaling is or includes a field in one DCI.

[0552] As a subembodiment of this embodiment, the DCI is one of formats 0_1, 0_0, and 1_0.

[0553] As a subembodiment of this embodiment, the DCI is of a format whose name includes "2_".

[0554] As a subembodiment of this embodiment, the DCI is of the form whose name includes "3_".

[0555] As a subembodiment of this embodiment, the DCI is of the form whose name includes "4_".

[0556] As a subembodiment of this embodiment, the DCI is of the form whose name includes "5_".

[0557] In one embodiment, the first signal is one UCI on a specific PUCCH (Physical Uplink Control Channel) resource.

[0558] As a subembodiment of this embodiment, the specific PUCCH resource is a PUCCH resource configured by the serving cell of the first node.

[0559] As a subembodiment of this embodiment, the specific PUCCH (Physical Uplink Control Channel) resource is a PUCCH resource configured by a serving cell of the first node for transmitting the first signal.

[0560] In one embodiment, the second signaling includes one PDCCH command.

[0561] In one embodiment, the resources indicated by the second signaling are associated with the target SpCell.

[0562] As a subembodiment of this embodiment, the resource indicated by the second signaling is associated with one of the K RRC signalings, and upon receiving the second signaling indicating the resource, the first node executes one of the K RRC signalings.

[0563] As a subembodiment of this embodiment, upon receiving the second signaling indicating the resource, the first node performs one of the K RRC signalings.

[0564] In one embodiment, the first signal indicates one of K RRC signalings.

[0565] As a subembodiment of this embodiment, the second signaling is associated with the first signal.

[0566] As a subembodiment of this embodiment, upon receiving the second signaling, the RRC signaling of the K RRC signalings indicated by the first signal associated with the second signaling is executed.

[0567] As a subembodiment of this embodiment, the second signaling is associated with the first signal via an identity or identifier.

[0568] As a subembodiment of this embodiment, the second signaling is associated with the first signal via resources.

[0569] As a subembodiment of this embodiment, the second signaling is associated with the first signal in a preconfigured manner.

[0570] As a subembodiment of this embodiment, the second signaling is related to the first signal via a spatial parameter.

[0571] As a subembodiment of this embodiment, the second signaling is associated with the first signal via a parameter or identity of the same cell group.

[0572] Embodiment 8 Embodiment 8, as shown in FIG. 8, shows a schematic diagram of a first signaling used to configure a first signal according to an embodiment of the present application.

[0573] In one embodiment, the first signaling includes at least one of the K RRC signalings.

[0574] In one embodiment, the first signaling is an RRC message.

[0575] In one embodiment, the first signaling includes an RRCReconfiguration.

[0576] In one embodiment, the first signaling includes: show.

[0577] In one embodiment, the first signaling indicates a maximum number of items to be included in the first signal.

[0578] In one embodiment, the first signaling indicates a candidate SpCell set that can be recommended by the first signal.

[0579] In one embodiment, the first signaling indicates a reference signal resource to which the measurements contained in the first signal are directed.

[0580] In one embodiment, the first signaling indicates the identity or index of the candidate SpCell recommended by the first signal.

[0581] In one embodiment, the first signaling indicates the identity or index of a reference signal resource recommended by the first signal.

[0582] In one embodiment, the first signaling indicates whether the first signal includes a recommended candidate SpCell.

[0583] In one embodiment, the first signaling indicates whether the first signal includes an identity or index of a recommended reference signal resource.

[0584] In one embodiment, the first signaling indicates a trigger condition for the first signal.

[0585] In one embodiment, the trigger condition of the first signal includes a time trigger.

[0586] In one embodiment, the trigger condition of the first signal includes an event trigger.

[0587] In one embodiment, the trigger condition for the first signal includes the quality of the current serving cell being lower than a first threshold.

[0588] In one embodiment, the trigger condition for the first signal includes a measurement result of the configured first reference signal resource being lower than a first threshold.

[0589] In one embodiment, the trigger condition for the first signal includes a measurement result of the configured first reference signal resource being below a first threshold and sustained for a certain period of time.

[0590] In one embodiment, the trigger condition for the first signal includes a measurement result of a configured first reference signal resource being lower than a first threshold and a measurement result of a reference signal resource in a configured second reference signal resource set being higher than a second threshold.

[0591] In one embodiment, the trigger condition for the first signal includes a measurement result of a configured first reference signal resource being lower than a first threshold and a measurement result of a reference signal resource in a configured second reference signal resource set being higher than a second threshold for a specified period of time.

[0592] In one embodiment, the trigger condition for the first signal includes: a measurement result of a configured first reference signal resource being lower than a first threshold, and a measurement result of a reference signal resource in a configured second reference signal resource set exceeding the measurement result of the first reference signal resource by at least X dB.

[0593] In one embodiment, the trigger condition for the first signal includes that a measurement result of a configured first reference signal resource is lower than a first threshold and a measurement result of a reference signal resource in a configured second reference signal resource set exceeds the measurement result of the first reference signal resource by at least X dB and persists for a certain period of time.

[0594] In one embodiment, the first signaling indicates X, where X is a real number.

[0595] In one embodiment, the first signaling indicates a first threshold value.

[0596] In one embodiment, the first signaling indicates a second threshold value.

[0597] In one embodiment, the first signaling indicates a particular time period.

[0598] In one embodiment, the first signaling comprises a timer that is started upon transmission of the first signal.

[0599] In one embodiment, the first signaling controls a timer for transmitting the first signal.

[0600] In one embodiment, the first signaling comprises a timer that is triggered by the first signal.

[0601] In one embodiment, the first signaling configures a timer that is triggered by the second signaling.

[0602] In one embodiment, the first reference signal resource is used for radio link monitoring.

[0603] In one embodiment, the first reference signal resource is used for beam failure detection.

[0604] In one embodiment, the second reference signal resource set is used for radio link monitoring.

[0605] In one embodiment, the second reference signal resource set is used for beam failure detection.

[0606] In one embodiment, the second reference signal resource set is configured independently from the reference signal resources used for radio link monitoring.

[0607] In one embodiment, the second reference signal resource set is configured independently from the reference signal resources used for beam failure detection.

[0608] In one embodiment, the first reference signal resource is configured independently from the reference signal resource used for radio link monitoring.

[0609] In one embodiment, the first reference signal resource is configured independently from the reference signal resource used for beam failure detection.

[0610] In one embodiment, the first signaling may be to select another candidate SpCell after any one of the K RRC signalings fails to be successfully applied. Indicates whether or not the following is allowed:

[0611] In one embodiment, the first signaling indicates a first quality requirement.

[0612] In one embodiment, the first signaling indicates a first time window.

[0613] In one embodiment, the first signaling indicates a first threshold value.

[0614] In one embodiment, the first signaling indicates a second threshold value.

[0615] In one embodiment, the first signaling indicates whether it is permitted not to perform RRC connection re-establishment.

[0616] In one embodiment, the first signaling indicates whether it is permitted not to perform the RRC connection re-establishment immediately.

[0617] In one embodiment, the first signaling indicates whether a conditional handover (CHO) evaluation is allowed to be performed after transmitting the first signal.

[0618] In one embodiment, the first signaling indicates whether or not it is permitted to perform CHO evaluation after receiving the second signaling.

[0619] In one embodiment, the first signaling indicates whether it is permitted to perform a CPC (Conditional PSCell Change) evaluation after transmitting the first signal.

[0620] In one embodiment, the first signaling indicates whether or not it is permitted to perform a CPC evaluation after receiving the second signaling.

[0621] In one embodiment, the first signaling indicates whether a recovery process based on K RRC signalings is supported.

[0622] In one embodiment, the first signaling indicates whether the LTM recovery process is supported.

[0623] In one embodiment, the first signaling indicates whether a cell switching recovery process is supported.

[0624] In one embodiment, the first signaling indicates whether a recovery process based on signaling execution triggered by a dependency on one signaling is supported.

[0625] In one embodiment, the first signaling indicates whether a recovery process based on L1L2 mobility is supported.

[0626] In one embodiment, the first signal indicates timing assistance information for the target SpCell.

[0627] In one embodiment, the second signaling indicates timing assistance information of the target SpCell.

[0628] In one embodiment, the first cell is selected as the target SpCell.

[0629] In one embodiment, the execution of any one of the K RRC signalings does not stop the evaluation of radio link failure.

[0630] In one embodiment, the first signal includes the identity or index of a reference signal within the second set of reference signals.

[0631] In one embodiment, the first signal does not include the identity or index of the target SpCell.

[0632] In one embodiment, the size of the first signal is zero.

[0633] In one embodiment, the size of the first signal is greater than zero.

[0634] In one embodiment, the priority of the first signal is one of the highest in the MAC CE.

[0635] In one embodiment, the first signal includes a MAC subheader.

[0636] In one embodiment, the first signal includes a first measurement report.

[0637] In one embodiment, the first signaling is used to configure a first measurement report, including configuring a transmission time of the first measurement report.

[0638] In one embodiment, the first signaling is used to configure a first measurement report, and includes configuring a measurement quantity of the first measurement report, such as RSRP.

[0639] In one embodiment, the first signaling is used to configure a first measurement report, including configuring an accuracy of the first measurement report.

[0640] In one embodiment, the first signaling is used to configure the first measurement report, and includes configuring a cell to which the first measurement report is directed.

[0641] In one embodiment, the first signaling is used to configure the first measurement report, and includes configuring a reference signal resource to which the first measurement report is directed.

[0642] In one embodiment, the first signaling is used to configure the first measurement report and includes configuring an identity to which the first measurement report is directed.

[0643] In one embodiment, the first signaling is used to configure a first measurement report, and includes configuring a trigger time (TTT) for the first measurement report.

[0644] In one embodiment, the first measurement report does not correspond to any measurement object.

[0645] In one embodiment, the first measurement report includes an L1-RSRP.

[0646] Embodiment 9 Embodiment 9, as shown in FIG. 9, illustrates a schematic diagram of a first signal used to report measurement results or recommended target cells or recommended reference signal resources according to an embodiment of the present application.

[0647] In one embodiment, the first signal includes a measurement result.

[0648] In one embodiment, the measurements included in the first signal are for cells configured by K RRC signaling.

[0649] In one embodiment, the measurements included in the first signal are for at least one cell configured by the K RRC signaling.

[0650] In one embodiment, the measurement results included in the first signal are for a first cell.

[0651] In one embodiment, the serving cell of the first node configures the first measurement.

[0652] In one embodiment, the first measurement is an L1 measurement.

[0653] In one embodiment, the first measurement is a measurement of a first reference signal resource set.

[0654] In one embodiment, the first signaling includes at least one of the K RRC signalings.

[0655] In one embodiment, the first signaling is an RRC message.

[0656] In one embodiment, the first signaling includes an RRCReconfiguration.

[0657] In one embodiment, a serving cell of the first node configures the first measurement via first signaling.

[0658] In one embodiment, the first measurement includes measuring RSRP of L1.

[0659] In one embodiment, the first measurement includes obtaining channel state information.

[0660] In one embodiment, the first signaling reports the results of the first measurement.

[0661] In one embodiment, the first signal is transmitted only after the first measurement is completed.

[0662] In one embodiment, the first measurement is periodic.

[0663] In one embodiment, the first signal is event-based and periodic.

[0664] In one embodiment, the first signal is transmitted periodically.

[0665] In one embodiment, the first signal is also transmitted periodically when the trigger condition is met.

[0666] In one embodiment, the trigger condition includes the current cell quality being lower than a given threshold.

[0667] In one embodiment, the trigger condition includes the quality of the target cell being higher than another given threshold.

[0668] In one embodiment, the first measurement results include measurements of multiple cells.

[0669] In one embodiment, the first measurement is for PCI of multiple cells.

[0670] In one embodiment, the first signal includes a recommended target cell.

[0671] In one embodiment, the first signal indicates the identity of the target cell or the index of the target cell.

[0672] In one subembodiment of this embodiment, the first signal does not include a measurement result.

[0673] In one subembodiment of this embodiment, the index of the target cell is the index that constitutes the first measurement.

[0674] As a subembodiment of this embodiment, the index of the target cell is the index of the K RRC signalings.

[0675] As a subembodiment of this embodiment, the index of the target cell in the first signal is the same as the index in the first measurement configuration.

[0676] In one embodiment, the first node determines a recommended target cell according to the result of the first measurement.

[0677] In one embodiment, the first node determines the recommended target cell according to parameters of conditions or criteria configured in the first signaling.

[0678] In one embodiment, the first node determines the recommended target cell according to the S criterion.

[0679] In one embodiment, the first node determines the recommended target cell according to an internal algorithm.

[0680] In one embodiment, the first signal indicates a number of recommended target cells.

[0681] In one embodiment, the first cell is one of a plurality of target cells.

[0682] In one embodiment, the target SpCell is one target cell indicated by the first signal.

[0683] In one embodiment, the recommended reference signal resource corresponds to one reference signal.

[0684] In one embodiment, the first signal includes an index or identity of a recommended reference signal resource.

[0685] In one embodiment, the recommended reference signal resources included in the first signal include CSI-RS resources.

[0686] In one embodiment, the recommended reference signal resource included in the first signal includes an SSB resource.

[0687] In one embodiment, the recommended reference signal resources included in the first signal belong to a first reference signal resource set.

[0688] In one embodiment, the index of the recommended reference signal resource included in the first signal is the index of the recommended reference signal resource in the first reference signal resource set.

[0689] In one embodiment, each reference signal resource in the first reference signal resource set is associated with one cell identity.

[0690] In one embodiment, each reference signal resource in the first reference signal resource set is mapped to one cell identity.

[0691] In one embodiment, the first signal indicates a preferred target cell by indicating the identity or index of a measurement configuration.

[0692] In one embodiment, the first signal indicates the identity or index of the measurement configuration, thereby indicating the recommended reference signal resource.

[0693] In one embodiment, the first signal implicitly indicates a preferred target cell.

[0694] In one embodiment, the first signal implicitly indicates the recommended reference signal resource.

[0695] In one embodiment, the first signal may be used for beam failure recovery.

[0696] In one embodiment, the MAC CE name included in the second signaling includes L1L2.

[0697] In one embodiment, the MAC CE name included in the second signaling includes L2.

[0698] In one embodiment, the MAC CE name included in the second signaling includes Mobility.

[0699] In one embodiment, the MAC CE name included in the first signal includes L1L2.

[0700] In one embodiment, the MAC CE name included in the first signal includes L2.

[0701] In one embodiment, the MAC CE name included in the first signal includes Mobility.

[0702] In one embodiment, the MAC CE name included in the first signal includes a BFR.

[0703] In one embodiment, the first signal may include the target cell of the PCell and the target cell of the PSCell simultaneously.

[0704] In one embodiment, the first signal may include only one of the target cell for the PCell and the target cell for the PSCell.

[0705] In one embodiment, the preferred target cell or cells indicated by the first signal The target cells of are candidate target cells.

[0706] In one embodiment, the first signal includes a first indication field, which is used to indicate whether the recommended target cell is a target cell of a PCell or a target cell of a PSCell.

[0707] In one subembodiment of this embodiment, the first indication field occupies 1 bit.

[0708] In one embodiment, the first signal may simultaneously indicate a recommended candidate cell and a recommended reference signal resource.

[0709] In one embodiment, the recommended reference signal resource is also the recommended reference signal.

[0710] In one embodiment, one of the first signal and the second signaling is DCI, and the other is MAC CE.

[0711] In one embodiment, the first signal and the second signaling are both MAC CE.

[0712] In one embodiment, the K RRC signalings indicate that the random access resources of the configured cells are valid within the first window.

[0713] In one embodiment, the first node starts a fourth timer upon transmission of the first signal.

[0714] In one embodiment, before the expiration of the fourth timer, K RRC signaling events are not related to or incidental to the random access process.

[0715] In one embodiment, after expiry of the fourth timer accompanied by execution of one of the K RRC signalings, the first node initiates random access to the target cell.

[0716] In one embodiment, in response to receiving the second signaling, the first node stops transmitting signals for reporting the measurement results or the recommended target cell or the recommended reference signal resource.

[0717] As a subembodiment of this embodiment, stopping transmission refers to stopping transmission while the third timer is running.

[0718] In one embodiment, in response to receiving the second signaling, the first node stops transmitting MAC CEs having the same name as the MAC CE included in the first signaling.

[0719] As a subembodiment of this embodiment, stopping transmission refers to stopping transmission while the third timer is running.

[0720] In one embodiment, in response to receiving the second signaling, the first node stops transmitting MAC PDUs having the same logical channel as that used by the first signaling.

[0721] As a subembodiment of this embodiment, stopping transmission refers to stopping transmission while the third timer is running.

[0722] In one embodiment, in response to receiving the second signaling, the first node stops retransmitting or transmitting copies of the first signal.

[0723] As a subembodiment of this embodiment, stopping transmission refers to stopping transmission while the third timer is running.

[0724] In one embodiment, in response to receiving the second signaling, the first node cancels the triggered L1 measurement reporting process.

[0725] In one embodiment, in response to receiving the second signaling, the first node cancels the recommended cell or recommended reference signal resource reporting process.

[0726] In one embodiment, the first signal recommends both a target cell and a reference signal resource.

[0727] In one embodiment, the name of the first signal includes Mobility.

[0728] In one embodiment, the name of the first signal includes L2.

[0729] In one embodiment, the name of the first signal includes LTM.

[0730] In one embodiment, the name of the second signaling includes Mobility.

[0731] In one embodiment, the name of the second signaling includes L2.

[0732] In one embodiment, the name of the second signaling includes LTM.

[0733] In one embodiment, the names of the K RRC signalings include LTM.

[0734] Embodiment 10 Embodiment 10, as shown in FIG. 10, illustrates a schematic diagram of each of K RRC signalings used to configure at least one cell according to an embodiment of the present application.

[0735] In one embodiment, each of the K RRC signalings includes a third field, and the third field is used to configure an SpCell, and each of the K RRC signalings is used to configure at least one cell configured by the third field.

[0736] In one subembodiment of this embodiment, the third field is SpCellConfig.

[0737] In one subembodiment of this embodiment, the third field is SpCellConfigCommon.

[0738] As a subembodiment of this embodiment, the third domain is SpCellConfigDedicated.

[0739] In one embodiment, each of the K RRC signalings includes a third field, and the third field is used to configure an SpCell, and each of the K RRC signalings is used to configure one cell that is an SpCell or a target SpCell.

[0740] In one subembodiment of this embodiment, the third field is SpCellConfig.

[0741] In one subembodiment of this embodiment, the third field is SpCellConfigCommon.

[0742] As a subembodiment of this embodiment, the third domain is SpCellConfigDedicated.

[0743] As a subembodiment of this embodiment, if any one of the K RRC signalings is normally applied, the cell configured by any one of the K RRC signalings is applied as the SpCell.

[0744] In one embodiment, each of the K RRC signalings has the same name.

[0745] In one embodiment, each of the K RRC signalings constitutes one cell.

[0746] As a subembodiment of this embodiment, the cells configured by the RRC signaling among the K RRC signalings are different.

[0747] As a subembodiment of this embodiment, the cells configured by the RRC signaling among the K RRC signalings may be the same.

[0748] In one embodiment, each of the K RRC signalings constitutes one cell group.

[0749] As a subembodiment of this embodiment, a cell configured by each of the K RRC signalings is a PCell of a cell group configured by each of the K RRC signalings, and the cell group configured by each of the K RRC signalings is an MCG.

[0750] As a subembodiment of this embodiment, a cell configured by each of the K RRC signalings is a PSCell of a cell group configured by each of the K RRC signalings, and the cell group configured by each of the K RRC signalings is an SCG.

[0751] In one embodiment, each of the K RRC signalings includes one cell identity, and each of the K RRC signalings is used to configure one cell, which is the cell identified by the one cell identity included in each of the K RRC signalings.

[0752] In one embodiment, each of the K RRC signalings indicates at least one target SpCell.

[0753] In one embodiment, each of the K RRC signalings indicates at least one cell. Target.

[0754] In one embodiment, the meaning of the phrase "each of the K RRC signalings is used to configure at least one cell" includes configuring the identity of at least one cell.

[0755] In one embodiment, the meaning of the phrase "each of the K RRC signalings is used to configure at least one cell" includes configuring at least one timer of at least one cell.

[0756] As a subembodiment of this embodiment, the at least one timer includes T310.

[0757] As a subembodiment of this embodiment, the at least one timer includes T312.

[0758] As a subembodiment of this embodiment, the at least one timer includes T311.

[0759] As a subembodiment of this embodiment, at least one timer is used for radio link failure.

[0760] In one embodiment, the meaning of the phrase "each of the K RRC signalings is used to configure at least one cell" includes configuring physical layer resources of at least one cell.

[0761] In one embodiment, the meaning of the phrase "each of the K RRC signalings is used to configure at least one cell" includes configuring reference signal resources of at least one cell.

[0762] In one embodiment, the meaning of the phrase "each of the K RRC signalings is used to configure at least one cell" includes configuring random access resources of at least one cell.

[0763] In one embodiment, the meaning of the phrase "each of the K RRC signalings is used to configure at least one cell" includes configuring the frequency of at least one cell.

[0764] In one embodiment, the meaning of the phrase "each of the K RRC signalings is used to configure at least one cell" includes configuring an SSB (Synchronization Signal Block) of at least one cell.

[0765] In one embodiment, the meaning of the phrase "each of the K RRC signalings is used to configure at least one cell" includes configuring a physical layer channel of at least one cell.

[0766] In one embodiment, each of the K RRC signalings is used to configure one PCell and at least one SCell that belongs to the same cell group as the PCell.

[0767] As a subembodiment of this embodiment, the PCell belongs only to the MCG.

[0768] In one embodiment, each of the K RRC signalings is associated with one PSCell and P It is used to configure at least one SCell (secondary cell) that belongs to the same cell group as the SCell.

[0769] As a subembodiment of this embodiment, the PSCell belongs only to the SCG.

[0770] In one embodiment, the meaning of the phrase "the first cell is not configured by any of the K RRC signalings" includes a cell configured by each of the K RRC signalings not being the first cell.

[0771] In one embodiment, the meaning of the phrase "the first cell is not configured by any of the K RRC signalings" includes a PCell that is configured by any one of the K RRC signalings and is not the first cell.

[0772] As a subembodiment of this embodiment, any one of the K RRC signalings is for the MCG.

[0773] In one embodiment, the meaning of the phrase "the first cell is not configured by any of the K RRC signalings" includes a PSCell that is configured by any one of the K RRC signalings and is not the first cell.

[0774] As a subembodiment of this embodiment, any one of the K RRC signalings is for the SCG.

[0775] In one embodiment, the meaning of "the first cell is configured by at least one of the K RRC signalings" includes that the cell configured by at least one of the K RRC signalings is the first cell.

[0776] In one embodiment, the meaning of "the first cell is configured by at least one of the K RRC signalings" includes that the PCell configured by at least one of the K RRC signalings is the first cell.

[0777] As a subembodiment of this embodiment, at least one of the K RRC signalings is for an MCG.

[0778] In one embodiment, the meaning of "the first cell is configured by at least one of the K RRC signalings" includes that the PSCell configured by at least one of the K RRC signalings is the first cell.

[0779] As a subembodiment of this embodiment, at least one of the K RRC signalings is for an SCG.

[0780] In one embodiment, the meaning of the phrase "the first cell is not configured by any of the K RRC signalings" includes the first cell not being a target cell configured by the K RRC signalings.

[0781] In one embodiment, the meaning of the phrase "the first cell is not configured by any of the K RRC signalings" includes the first cell not being a target SpCell configured by the K RRC signalings.

[0782] Embodiment 11 Embodiment 11 shows a structural block diagram of a processing device used in a first node according to an embodiment of the present application, as shown in Figure 11. In Figure 11, a processing device 1100 in the first node includes: a first receiver 1101, a first transmitter 1102, and a first processor 1103. In embodiment 11, The first receiver 1101 receives K RRC signalings, each of the K RRC signalings being used to configure at least one cell, where K is an integer greater than 1; The first receiver 1101 receives second signaling, and the second signaling is used to trigger application of one of the K RRC signalings; the first processor 1103, in response to any one of the K RRC signalings not being successfully applied, performs a first set of operations, the first set of operations including cell selection, the first cell being a cell selected in the cell selection included in the first set of operations; Whether the first set of operations includes transmitting the first information depends on whether the first cell is configured by at least one of the K RRC signalings, and the first set of operations includes transmitting the first information only if the first cell is not configured by any of the K RRC signalings, and successfully applying the one RRC signaling includes applying the one cell configured by the RRC signaling as an SpCell.

[0783] In one embodiment, the cell selection included in the first set of operations includes: preferentially selecting cells configured by the K RRC signalings; and, after one cell configured by the K RRC signalings is selected, applying RRC signaling used to configure the one cell from the K RRC signalings.

[0784] In one embodiment, the cell selection included in the first set of operations includes performing up to N cell selections in cells configured by the K RRC signalings before successfully applying one of the K RRC signalings, where N is a positive integer less than or equal to K.

[0785] In one embodiment, the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes the first timer expiring and the first timer being started upon application of any one of the K RRC signalings.

[0786] In one embodiment, the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes N cell selections being performed in cells configured by the K RRC signalings before successfully applying one of the K RRC signalings.

[0787] In one embodiment, the meaning of the phrase "any one of the K RRC signalings cannot be applied successfully" includes that the quality of the cell configured by any one of the K RRC signalings does not satisfy the first quality requirement.

[0788] In one embodiment, the first information includes an L1-based measurement result and an L3-based measurement result.

[0789] In one embodiment, the first information is used to indicate the reason for the cell switch failure.

[0790] In one embodiment, the first information is used to indicate a first cell.

[0791] In one embodiment, the first node is a user equipment (UE).

[0792] In one embodiment, the first node is a terminal that supports a large latency difference.

[0793] In one embodiment, the first node is a terminal that supports NTN.

[0794] In one embodiment, the first node is an aircraft or a vessel.

[0795] In one embodiment, the first node is a mobile phone or a vehicle-mounted terminal.

[0796] In one embodiment, the first node is a relay UE and / or a U2N remote UE.

[0797] In one embodiment, the first node is an Internet of Things terminal or an industrial Internet of Things terminal.

[0798] In one embodiment, the first node is a device that supports low latency and reliable transmission.

[0799] In one embodiment, the first node is a secondary link communication node.

[0800] In one embodiment, the first receiver 1101 comprises at least one of the antenna 452, the receiving device 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller / processor 459, the memory 460, and the data source 467 in embodiment 4.

[0801] In one embodiment, the first transmitter 1102 comprises at least one of the antenna 452, the transmitting device 454, the transmitting processor 468, the multi-antenna transmitting processor 457, the controller / processor 459, the memory 460, and the data source 467 in embodiment 4.

[0802] Those skilled in the art will understand that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium such as a read-only memory, a hard disk, or an optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Therefore, each module unit in the above embodiments 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 particular combination of software and hardware. User equipment, terminals, and UEs 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 devices, wireless sensors, internet cards, Internet of Things terminals, RFID terminals, NB-IoT terminals, MTC (machine-based communication) terminals, eMTC (extended MTC) terminals, data cards, internet cards, vehicle-mounted communication devices, low-cost mobile phones, low-cost tablet computers, satellite communication devices, ship communication devices, NTN user equipment, and other wireless communication devices. The base station or system device of this application may be a macrocell base station, a microcell base station, a femtocell, a relay base station, a gNB (NR Node B), a TRP (Transmitter Receiving Point), an NTN base station, or a satellite device. , flight platform devices, and other wireless communication devices.

[0803] The present disclosure may be implemented in other specified forms without departing from its core or essential characteristics. Therefore, the presently disclosed embodiments should in all cases be considered descriptive and not limiting. The scope of the present invention is determined by the appended claims, rather than the foregoing specification, and all changes within the meaning and range of equivalents thereof are deemed to be embraced therein.

Claims

1. A first node for wireless communication, comprising: a first receiver for receiving K RRC (Radio Resource Control) signaling, each of the K RRC signaling being used to configure at least one cell, where K is an integer greater than 1; the first receiver receives second signaling, the second signaling being used to trigger application of one of the K RRC signalings; a first processor that performs a first set of operations in response to any one of the K RRC signalings being unable to be successfully applied, the first set of operations including cell selection, a first cell being a cell selected in the cell selection and included in the first set of operations; Whether the first set of operations includes transmitting first information depends on whether the first cell is configured by at least one of the K RRC signalings, and the first set of operations includes transmitting the first information only if the first cell is not configured by any of the K RRC signalings, and successfully applying one RRC signaling includes applying the one cell configured by the RRC signaling as an SpCell (special cell).

2. 2. The first node of claim 1, wherein the cell selection included in the first operation set includes: preferentially selecting cells configured by the K RRC signalings; and, after one cell configured by the K RRC signalings is selected, applying RRC signaling used to configure the one cell among the K RRC signalings.

3. 3. The first node according to claim 1, wherein the cell selection included in the first set of operations comprises performing up to N cell selections in cells configured by the K RRC signalings before successfully applying one of the K RRC signalings, where N is a positive integer less than or equal to K.

4. 4. The first node according to claim 1, wherein the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes that a first timer expires and that the first timer is started upon the application of any one of the K RRC signalings.

5. 5. The first node according to claim 1, wherein the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes that N cell selections are performed in a cell configured by the K RRC signalings before successfully applying one of the K RRC signalings.

6. The first node according to any one of claims 1 to 5, wherein the meaning of the phrase "any one of the K RRC signalings cannot be applied successfully" includes that the quality of a cell configured by any one of the K RRC signalings does not meet a first quality requirement.

7. The first node according to any one of claims 1 to 6, wherein the first information comprises L1-based measurements and L3-based measurements.

8. The first node according to any one of claims 1 to 7, wherein the first information is used to indicate a reason for a cell switch failure.

9. The first node according to any one of claims 1 to 8, wherein the first information is used to indicate the first cell.

10. 1. A method for use in a first node for wireless communication, comprising: receiving K RRC signalings, each of the K RRC signalings being used to configure at least one cell, where K is an integer greater than 1; receiving second signaling, the second signaling being used to trigger application of one of the K RRC signalings; performing a first set of operations in response to any one of the K RRC signalings not being successfully applied, the first set of operations including cell selection, a first cell being a cell selected in the cell selection and included in the first set of operations; Whether the first set of operations includes transmitting first information depends on whether the first cell is configured by at least one of the K RRC signalings, and the first set of operations includes transmitting the first information only if the first cell is not configured by any of the K RRC signalings, and successfully applying one RRC signaling includes applying the one cell configured by the RRC signaling as an SpCell.

11. 11. The method for use in the first node according to claim 10, wherein the cell selection included in the first operation set includes: preferentially selecting cells configured by the K RRC signalings; and, after one cell configured by the K RRC signalings is selected, applying RRC signaling used to configure the one cell among the K RRC signalings.

12. 12. The method for use in the first node according to claim 10 or 11, wherein the cell selection included in the first set of operations comprises performing up to N cell selections among cells configured by the K RRC signalings before successfully applying one of the K RRC signalings, where N is a positive integer less than or equal to K.

13. The method used in the first node according to any one of claims 10 to 12, wherein the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes that a first timer expires and that the first timer is started upon the application of any one of the K RRC signalings.

14. 14. The method for use in a first node according to any one of claims 10 to 13, wherein the meaning of the phrase "any one of the K RRC signalings cannot be successfully applied" includes that N cell selections are performed in a cell configured by the K RRC signalings before successfully applying one of the K RRC signalings.

15. A method for use in a first node as described in any one of claims 10 to 14, wherein the meaning of the phrase "any one of the K RRC signalings cannot be applied successfully" includes that the quality of a cell configured by any one of the K RRC signalings does not meet a first quality requirement.

16. The method for use in the first node according to any one of claims 10 to 15, wherein the first information comprises L1-based measurements and L3-based measurements.

17. The method for use in a first node according to any one of claims 10 to 16, wherein the first information is used to indicate a reason for a cell switch failure.

18. The method for use in a first node according to any one of claims 10 to 17, wherein the first information is used to indicate the first cell.

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