A method and apparatus for wireless communication

Abstract

A method and apparatus for wireless communication are disclosed, including receiving at least one RRC information block, each of the at least one RRC information block being for configuring one cell group; application of any of the at least one RRC information block depends on receiving signaling other than the at least one RRC information block; receiving second signaling; the second signaling is signaling of a protocol layer below RRC layer; in response to receiving the second signaling, applying a first RRC information block, the second signaling indicates the first RRC information block in the at least one RRC information block; the application of the first RRC information block does not include random access; wherein expiration of the first timer is used to determine failure to successfully apply the first RRC information block. The present application can achieve better mobility management.

Description

Technical Field

[0001] This application relates to transmission methods and apparatus in wireless communication systems, to mobility management, and particularly to reducing latency and avoiding communication interruptions. Background Technology

[0002] The application scenarios of future wireless communication systems are becoming increasingly diversified, and different application scenarios place different performance requirements on the system. In order to meet the different performance requirements of various application scenarios, the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting decided to conduct research on New Radio (NR) (or Fifth Generation, 5G). The 3GPP RAN #75 plenary meeting adopted the NR WI (Work Item), and began the standardization work of NR.

[0003] In communications, both LTE (Long Term Evolution) and 5G NR involve reliable and accurate information reception, optimized energy efficiency, determination of information validity, flexible resource allocation, scalable system architecture, efficient non-access stratum information processing, low service interruption and drop rate, and support for low power consumption. These are crucial for normal communication between base stations and user equipment, rational resource scheduling, and balanced system load. They are the cornerstone of high throughput, meeting the communication needs of various services, improving spectrum utilization, and enhancing service quality. They are indispensable for eMBB (enhanced Mobile Broadband), URLLC (Ultra Reliable Low Latency Communication), and eMTC (enhanced Machine Type Communication). Meanwhile, there are extensive needs in IIoT (Industrial Internet of Things), V2X (Vehicle-to-X), Device-to-Device communication, unlicensed spectrum communication, user communication quality monitoring, network planning and optimization, NTN (Non-Terrestrial Network), TN (Terrestrial Network), dual connectivity systems, radio resource management and codebook selection for multiple antennas, signaling design, neighbor cell management, service management, and beamforming. Information transmission methods are divided into broadcast and unicast, both essential for 5G systems as they are highly helpful in meeting the above requirements. The UE can connect to the network directly or via a relay.

[0004] As system scenarios and complexity continue to increase, higher demands are placed on reducing interruption rates, reducing latency, enhancing reliability, improving system stability, increasing business flexibility, and saving power. At the same time, compatibility between different systems and versions needs to be considered during system design.

[0005] The meanings of concepts, terms and abbreviations in this application are as follows: Refer to 3GPP standards, including but not limited to:

[0006] https: / / www.3gpp.org / ftp / Specs / archive / 21_series / 21.905 / 21905-h10.zip

[0007] https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.300 / 38300-h10.zip

[0008] https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.331 / 38331-h10.zip

[0009] https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.321 / 38321-h10.zip

[0010] https: / / www.3gpp.org / ftp / Specs / archive / 38_series / 38.304 / 38304-h10.zip Summary of the Invention

[0011] Researchers have discovered that in scenarios involving the application of RRC (Related Relay Code) blocks, the expiration of a timer can determine if the RRC block application was unsuccessful. The timer needs to be stopped at an appropriate time, such as upon successful application of the RRC block, including receiving information that confirms successful application. Otherwise, the timer will expire, leading to the mistaken assumption that the RRC block was not successfully applied, causing problems and even dropped calls. Therefore, how to use timers when applying RRC blocks is a problem that needs to be solved. Researchers have also found that timers have an important function in mobility management; successful application of RRC blocks signifies a successful cell handover or cell exchange, and the timer can be used to determine whether the handover or cell exchange was successful. Researchers also found that mobility management includes cell handover and / or cell switching. In traditional cell handover, a Layer 3 (L3) based control method, namely radio resource control (RRC), is used. Selectable terminals report L3 measurement results, the network selects an appropriate target cell based on the measurement results, and sends RRC signaling to indicate handover to the target cell. The terminal executes the RRC signaling for handover, and the execution process generally includes: determining the target cell, applying the target cell's configuration, synchronizing with the target cell, initiating random access, and sending a handover completion message. The entire handover process involves: signaling interpretation and execution, downlink synchronization, uplink synchronization, and completing the remaining handover steps, which generally takes tens to hundreds of milliseconds. Services with high latency requirements are significantly affected; for some services, latency exceeding 20 milliseconds can cause a noticeable degradation in service quality. In 5G, cells are becoming smaller, handovers are becoming more frequent, and the supported services are becoming more diverse. The issue of service quality degradation caused by handover latency deserves attention. Researchers also found that a feasible approach is to use optional, lower-layer (L1 physical layer) measurement results and lower-layer (e.g., physical layer or MAC layer) signaling to indicate the handover. Combined with pre-configured RRC blocks and optional terminal pre-synchronization measures, this can significantly reduce handover latency. This type of handover, also known as cell switching or Layer 1 / Layer 2 triggered mobility (LTM), has relatively short latency. In some scenarios, the target cell is already synchronized with the current cell, for example, within the same timing advance group. In this case, the UE is also synchronized with the target cell, or the UE has pre-executed the synchronization process, or synchronization is achieved with network indication. In short, there is no need to use the random access procedure to complete synchronization. Timers in mobility management can be stopped upon successful random access, but without using the random access procedure, it may be impossible to stop the mobility management timers in a timely manner, leading to errors. This is an urgent issue that needs to be addressed.

[0012] To address the problems mentioned above, this application provides a solution.

[0013] It should be noted that, unless otherwise specified, the embodiments and features in any node of this application can be applied to any other node. Unless otherwise specified, the embodiments and features in any node of this application can be arbitrarily combined with each other. Furthermore, the method proposed in this application can also be used to solve other problems in communication.

[0014] This application discloses a method used in a first node of wireless communication, comprising:

[0015] Receive at least one RRC information block, each of the at least one RRC information block being used to configure a cell group; the application of any of the at least one RRC information blocks depends on receiving signaling other than the at least one RRC information block.

[0016] Receive a second signaling; the second signaling is signaling at a protocol layer below the RRC layer; in response to receiving the second signaling, apply a first RRC information block, the second signaling indicating the first RRC information block in the at least one RRC information block; the application of the first RRC information block does not include random access; accompanying the reception of the second signaling, start a first timer; the stopping of the first timer depends on the reception of first information, the first information being generated by a protocol layer below the RRC layer; the reception of the first information is used to determine that the first RRC information block has been successfully applied;

[0017] The expiration of the first timer is used to determine that the first RRC information block was not successfully applied.

[0018] As an example, the problems to be solved by this application include: how to use timers, how to stop timers, how to properly use timers in scenarios where RRC information blocks are triggered by L1L2 signaling, how to coordinate signaling at different protocol layers, reduce signaling application latency, make signaling application more coordinated, and how to accurately and timely determine whether an RRC information block has been successfully applied.

[0019] As an example, the advantages of the above method include: greater flexibility, reduced latency in RRC block application, guaranteed service quality and continuity, and prevention of interruptions. It allows for timely determination of whether the RRC block has been successfully applied; prevents erroneous operations; reduces signaling overhead; and improves signaling efficiency.

[0020] Specifically, according to one aspect of this application, a first transmitter transmits a first measurement result, wherein the first measurement result is an L1 measurement result;

[0021] The first transmitter sends a first confirmation message, which is used to indicate that the first RRC information block is applied;

[0022] Specifically, the action of sending the first measurement result is executed before receiving the second signaling; the action of sending the first confirmation information is executed after receiving the second signaling.

[0023] Specifically, according to one aspect of this application, the first receiver receives third signaling, the third signaling being signaling at a protocol layer below the RRC layer; in response to receiving the third signaling, it applies a second RRC information block, the third signaling indicating the second RRC information block in the at least one RRC information block; the second RRC information block includes triggering random access; accompanying the reception of the third signaling, it starts a first timer; in response to the successful completion of random access for a cell in the cell group configured for the second RRC information block, it stops the first timer.

[0024] Specifically, according to one aspect of this application, the expiration of the first timer will not trigger an RRC reconstruction.

[0025] Specifically, according to one aspect of this application, the at least one RRC information block is used to indicate whether the expiration of the first timer triggers an RRC reconstruction.

[0026] Specifically, according to one aspect of this application, a first processor, in response to the expiration of the first timer, applies one of the at least one RRC information blocks to start the first timer.

[0027] Specifically, according to one aspect of this application, the first processor, in response to the expiration of the first timer, reverts to a configuration prior to the application of the first RRC information block.

[0028] Specifically, according to one aspect of this application, the phrase fallback to the configuration prior to the application of the first RRC information block does not include releasing the signaling radio bearer, discarding the key, or falling back to the previous PDCP state variables for the DRB. The phrase fallback to the configuration prior to the application of the first RRC information block includes at least a partial MAC reset.

[0029] Specifically, according to one aspect of this application, the phrase fallback to the configuration prior to the application of the first RRC information block does not include releasing or rebuilding the RLC entity.

[0030] Specifically, according to one aspect of this application, the first node is an Internet of Things (IoT) terminal.

[0031] Specifically, according to one aspect of this application, the first node is a user equipment.

[0032] Specifically, according to one aspect of this application, the first node is a relay.

[0033] Specifically, according to one aspect of this application, the first node is an access network device.

[0034] Specifically, according to one aspect of this application, the first node is an in-vehicle terminal.

[0035] Specifically, according to one aspect of this application, the first node is an aircraft.

[0036] Specifically, according to one aspect of this application, the first node is a mobile phone.

[0037] This application discloses a first node used for wireless communication, comprising:

[0038] A first receiver receives at least one RRC information block, each of the at least one RRC information block being used to configure a cell group; the application of any of the at least one RRC information blocks depends on receiving signaling other than the at least one RRC information block.

[0039] The first receiver receives a second signaling; the second signaling is signaling at a protocol layer below the RRC layer; in response to receiving the second signaling, a first RRC information block is applied, the second signaling indicating the first RRC information block in the at least one RRC information block; the application of the first RRC information block does not include random access; along with the reception of the second signaling, a first timer is started; the stopping of the first timer depends on the reception of first information, the first information being generated by a protocol layer below the RRC layer; the reception of the first information is used to determine that the first RRC information block has been successfully applied;

[0040] The expiration of the first timer is used to determine that the first RRC information block was not successfully applied.

[0041] As an example, compared with conventional solutions, this application has the following advantages:

[0042] It can support fast handover within the same CU (Control Unit), especially within the same DU (Data Unit), which can also be called cell switching.

[0043] This reduced the handover latency.

[0044] It can ensure data continuity during the switching process.

[0045] Minimize the impact of the handover on data transmission.

[0046] Supports L1 and L2 mobility management.

[0047] This prevented communication interruptions.

[0048] It reduces the impact of wireless link failures on communication.

[0049] It helps with network optimization.

[0050] This reduced the number of handover failures.

[0051] This reduces the possibility of switching between ping-pong and other modes. Attached Figure Description

[0052] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0053] Figure 1 A flowchart is shown for receiving at least one RRC information block, receiving second signaling, and applying the first RRC information block according to an embodiment of this application.

[0054] Figure 2 A schematic diagram of a network architecture according to an embodiment of this application is shown;

[0055] Figure 3 A schematic diagram of an embodiment of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application is shown;

[0056] Figure 4 A schematic diagram of a first communication device and a second communication device according to an embodiment of this application is shown;

[0057] Figure 5 A flowchart of wireless signal transmission according to an embodiment of this application is shown;

[0058] Figure 6 A schematic diagram of an LTM according to an embodiment of this application is shown;

[0059] Figure 7 A schematic diagram is shown illustrating how the receipt of first information according to an embodiment of this application is used to determine that the first RRC information block has been successfully applied;

[0060] Figure 8 A schematic diagram is shown illustrating how the expiration of a first timer according to an embodiment of this application is used to determine the failure to successfully apply a first RRC information block;

[0061] Figure 9A schematic diagram is shown illustrating how first confirmation information, according to an embodiment of this application, is used to indicate that a first RRC information block is applied;

[0062] Figure 10 A schematic diagram of a processing apparatus for a first node according to an embodiment of this application is illustrated. Implementation

[0063] The technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0064] Example 1

[0065] Example 1 illustrates a flowchart of receiving at least one RRC information block, receiving second signaling, and applying a first RRC information block according to an embodiment of this application, as shown in the attached diagram. Figure 1 As shown. (Attached) Figure 1 In the diagram, each box represents a step. It is particularly important to emphasize that the order of the boxes does not represent the chronological order of the steps they represent.

[0066] In Embodiment 1, the first node in this application receives at least one RRC information block in step 101; receives second signaling in step 102; and applies the first RRC information block in step 103.

[0067] Wherein, each of the at least one RRC information blocks is used to configure a cell group; the application of any of the at least one RRC information blocks depends on receiving signaling other than the at least one RRC information block; the second signaling is signaling of a protocol layer below the RRC layer; in response to receiving the second signaling, the first node applies a first RRC information block, the second signaling indicating the first RRC information block in the at least one RRC information block; the application of the first RRC information block does not include random access; with the receipt of the second signaling, a first timer is started; the stopping of the first timer depends on the receipt of first information, the first information being generated by a protocol layer below the RRC layer; the receipt of the first information is used to determine that the first RRC information block has been successfully applied; wherein, the expiration of the first timer is used to determine that the first RRC information block has not been successfully applied.

[0068] As an example, the first node is UE (User Equipment).

[0069] As an example, the first node is in RRC connected state.

[0070] As an example, any parameter in this application may be configured by the network or may be generated by the first node according to an internal algorithm, such as randomization.

[0071] As an example, this application is directed to NR.

[0072] As an example, this application is directed to wireless communication networks after NR.

[0073] As an example, the serving cell refers to the cell where the UE camps. Performing a cell search includes the UE searching for a suitable cell within a selected PLMN (Public Land Mobile Network) or SNPN (Stand-alone 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 camping on a cell; that is, a camped cell is the serving cell for the UE. Camping on a cell in 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 wishes to establish an RRC connection or continue a suspended RRC connection, the UE can perform initial access on the control channel of the camped cell; the network can page the UE; and the UE can receive ETWS (Earthquake and Tsunami Warning System) and CMAS (Commercial Mobile Alert System) notifications.

[0074] As an example, for a UE in RRC connected state without CA / DC (carrier aggregation / dual connectivity) configured, there is only one serving cell, including the primary cell. For a UE in RRC connected state with CA / DC configured, the serving cell is used to indicate the set of cells including the special cell (SpCell) and all cells from smaller cells. The primary cell is an MCG (Master Cell Group) cell, operating on the primary frequency. The UE performs the initial connection establishment process or initiates connection reconstruction on the primary cell. For dual connectivity operations, the special cell refers to the PCell (Primary Cell) of the MCG or the PSCell (Primary SCGCell) of the SCG (Secondary Cell Group); if it is not a dual connectivity operation, the special cell refers to the PCell.

[0075] As an example, the frequency at which the SCell (Secondary Cell) operates is the frequency of the cell.

[0076] As an example, the individual content of an information element is called a field.

[0077] As an example, MR-DC (Multi-Radio Dual Connectivity) refers to dual connectivity between an E-UTRA and an NR node, or dual connectivity between two NR nodes.

[0078] As an example, in MR-DC, the radio access node that provides control plane connection to the core network is the master node, which can be a master eNB, a master ng-eNB, or a master gNB.

[0079] As an example, MCG refers to a group of serving cells associated with the master node in MR-DC, including SpCell, and optionally, one or more SCell.

[0080] As an example, PCell is the SpCell of MCG.

[0081] As an example, PSCell is the SpCell of SCG.

[0082] As an example, in MR-DC, no control plane connection to the core network is provided; instead, the radio access node that provides additional resources to the UE is a slave node. The slave node can be an en-gNB, an ng-eNB, or a gNB.

[0083] As an example, in MR-DC, the set of serving cells associated with a slave node is an SCG (secondary cell group), which includes SpCell and, optionally, one or more SCells.

[0084] As an example, the SpCell is a PCCell or the SpCell is a PSCell.

[0085] As an example, an RRC information block refers to an information element in an RRC message.

[0086] As an example, an RRC information block may include one or more RRC information blocks.

[0087] As an example, an RRC information block may not include any RRC information blocks, but only include at least one parameter.

[0088] As an example, the at least one RRC information block includes only one RRC information block.

[0089] As one embodiment, the at least one RRC information block includes multiple RRC information blocks.

[0090] As an example, the at least one RRC information block includes at least one information block in the RRCReconfiguration message.

[0091] As an example, the at least one RRC information block includes only one information block in the RRCReconfiguration message.

[0092] As an example, the at least one RRC information block is carried by an RRC message.

[0093] As an example, the at least one RRC information block is carried by an RRCReconfiguration message.

[0094] As an example, each of the at least one RRC information block is carried by an RRCReconfiguration message.

[0095] As one embodiment, the at least one RRC information block is or includes CellGroupConfig.

[0096] As an example, the at least one RRC information block constitutes a list of RRC information blocks.

[0097] As a sub-example of this embodiment, the list is named AddMod.

[0098] As an example, the phrase "each RRC information block in the at least one RRC information block is used to configure a cell group" means that each RRC information block in the at least one RRC information block includes at least CellGroupConfig.

[0099] As an example, multiple RRC information blocks in at least one RRC information block described in the phrase can be used to configure the same cell group.

[0100] As a sub-example of this embodiment, the phrase "configure the same cell" means that the configured cells include the same SpCell, but the configuration parameters of the cell group are different.

[0101] As a sub-example of this embodiment, the phrase "configure the same cell" means that the configured cell includes the same SpCell and SCell, but the configuration parameters of the cell group are different.

[0102] As a sub-implementation of this embodiment, the configuration parameters of the cell group include at least one parameter, such as time-frequency resources, such as the value of a timer.

[0103] As an example, the phrase "each of the at least one RRC information block is used to configure a cell group" means that each of the at least one RRC information block is used to configure the SpCell of a cell group.

[0104] As an example, the cell group is either a primary cell group or a candidate primary cell group, or a secondary cell group or a candidate secondary cell group.

[0105] As an example, the phrase "each of the at least one RRC information block in the phrase is used to configure a cell group" means that each of the at least one RRC information block is used to configure the value of at least one timer for a cell group.

[0106] As an example, the phrase "each of the at least one RRC information block in the phrase is used to configure a cell group" means that each of the at least one RRC information block is used to configure random access resources for a cell group.

[0107] As an example, the phrase "each of the at least one RRC information block is used to configure a cell group" means that each of the at least one RRC information block is used to configure the reference signal resources of a cell group.

[0108] As an example, the phrase "each of the at least one RRC information blocks in the phrase is used to configure a cell group" means that each of the at least one RRC information blocks is used to configure the value of a first timer for a cell group.

[0109] As an example, the phrase "each of the at least one RRC information block in the phrase is used to configure a cell group" means that each of the at least one RRC information block is used to configure an RLC bearer or RLC entity of a cell group.

[0110] As an example, the phrase "each RRC information block in the at least one RRC information block is used to configure a cell group" means that each RRC information block in the at least one RRC information block is used to configure the MAC of a cell group.

[0111] As an example, the phrase "each of the at least one RRC information block in the phrase is used to configure a cell group" means that each of the at least one RRC information block is used to configure the identity or index of a cell group.

[0112] As an example, the phrase "each RRC information block in the at least one RRC information block is used to configure a cell group" means that each RRC information block in the at least one RRC information block is used to configure a SCell of a cell group.

[0113] As an example, the phrase "each of the at least one RRC information block in the phrase is used to configure a cell group" means that each of the at least one RRC information block is used to configure the reconfigurationWithSync of the SpCell of a cell group.

[0114] As an example, the phrase "each of the at least one RRC information block in the phrase is used to configure a cell group" means that each of the at least one RRC information block is used to configure measurement and / or parameters for mobility management of a cell group.

[0115] As an example, the meaning of "application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block" is or includes: the at least one RRC information block does not include the signaling other than the at least one RRC information block; the RRC message to which the at least one RRC information block belongs does not include the signaling other than the at least one RRC information block.

[0116] As an example, the meaning of "application of any RRC information block in the at least one RRC information block in the sentence depends on receiving signaling other than the at least one RRC information block" is or includes: the signaling other than the at least one RRC information block is signaling of a protocol layer below the RRC layer.

[0117] As an example, the meaning of the sentence "the application of any RRC information block in at least one RRC information block depends on receiving signaling other than the at least one RRC information block" is or includes: the signaling other than the at least one RRC information block is MAC layer signaling.

[0118] As an example, the meaning of "application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block" is or includes: the signaling other than the at least one RRC information block is MAC layer and physical layer signaling.

[0119] As an example, the meaning of the application of any RRC information block in the at least one RRC information block in the sentence depending on the reception of signaling other than the at least one RRC information block is or includes: the signaling other than the at least one RRC information block is a MAC CE (Control element).

[0120] As an example, the meaning of "the application of any RRC information block in the at least one RRC information block depends on the receipt of signaling other than the at least one RRC information block" is or includes: the at least one RRC information block will not be applied immediately after being received.

[0121] As an example, the meaning of the application of any RRC information block in the at least one RRC information block in the sentence depending on the reception of signaling other than the at least one RRC information block is or includes: the at least one RRC information block will be stored in a state variable after being received.

[0122] As an example, the meaning of the sentence "The application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block" is or includes: the application of any RRC information block in the at least one RRC information block needs to be triggered.

[0123] As an example, the meaning of "application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block" is or includes: if the signaling other than the at least one RRC information block is not received, then none of the RRC information blocks in the at least one RRC information block will be applied.

[0124] As an example, the meaning of the sentence "the application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block" is or includes: if the signaling other than the at least one RRC information block is received, then one or more of the at least one RRC information blocks will be applied.

[0125] As an example, the meaning of the sentence "The application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block" is or includes: the application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block only when no RRC information block in the at least one RRC information block has failed to be successfully applied.

[0126] As an example, the meaning of the sentence "Application dependency of any RRC information block in at least one RRC information block receiving signaling other than the at least one RRC information block" is or includes: application dependency of any RRC information block in at least one RRC information block receiving signaling other than the at least one RRC information block only when the first timer has not expired.

[0127] As an example, the meaning of the sentence "the application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block" is or includes: when no RRC information block in the at least one RRC information block is applied, the application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block.

[0128] As an example, the meaning of the sentence "the application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block" is or includes: when no RRC information block in the at least one RRC information block is attempted to be applied, the application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block.

[0129] As an example, the meaning of the sentence "The application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block" is or includes: when the first RRC information block of the at least one RRC information block is applied, the application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block.

[0130] As an example, the meaning of the sentence "The application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block" is or includes: after the last successful execution of LTM, when the first RRC information block of the at least one RRC information block is applied, the application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block.

[0131] As an example, the meaning of the sentence "the application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block" is or includes: when no LTM failure occurs for the at least one RRC information block, the application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block.

[0132] As an example, the second signaling is the signaling other than the at least one RRC information block.

[0133] As one example, the second signaling is MAC CE.

[0134] As one example, the second signaling is MAC CE and DCI (downlink control information).

[0135] As a sub-implementation of this embodiment, the phrase "the second signaling is MAC CE and DCI" means that the second signaling includes both MAC CE and DCI.

[0136] As an example, after receiving the second signaling, the MAC layer of the first node sends an indication to the RRC layer of the first node.

[0137] As a sub-implementation of this embodiment, the indication includes receiving the second signaling.

[0138] As a sub-implementation of this embodiment, the indication includes receiving the second signaling, the second signaling indicating the application of the first RRC information block.

[0139] As a sub-implementation of this embodiment, the indication includes a request or need to apply the first RRC information block.

[0140] As an example, the phrase "as a response to receiving the second signaling" means that the application of the first RRC information block triggers the application of the first RRC information block.

[0141] As an example, the meaning of the phrase "applying the first RRC information block" includes: executing the first RRC information block.

[0142] As an example, the meaning of the phrase "applying the first RRC information block" includes: applying the parameters and / or configuration in the first RRC information block.

[0143] As an example, the meaning of the phrase "applying the first RRC information block" includes: saving the current configuration and applying the configuration indicated by the first RRC information block.

[0144] As an example, the meaning of the phrase applying the first RRC information block includes: applying each parameter indicated by the first RRC information block.

[0145] As an example, applying the first RRC information block includes stopping at least one timer other than the first timer.

[0146] As one example, applying the first RRC information block includes stopping or restarting the first timer.

[0147] As one example, the second signaling is generated by a protocol layer below the RRC layer.

[0148] As an example, the second signaling is not RRC signaling.

[0149] As an example, the meaning of the phrase "the second signaling" indicating the first RRC information block in the at least one RRC information block is or includes: the second signaling explicitly indicates which of the at least one RRC information blocks is the first RRC information block.

[0150] As an example, the meaning of the phrase "second signaling" indicating the first RRC information block in the at least one RRC information block is or includes: the second signaling includes a first identity, the first identity being the identity of one of the at least one RRC information blocks.

[0151] As a sub-implementation of this embodiment, the first identity is a configuration identity.

[0152] As a sub-implementation of this embodiment, the first identity is an index.

[0153] As a sub-implementation of this embodiment, the first identity is the first identity indicated by the second signaling.

[0154] As a sub-implementation of this embodiment, the first identity is the preferred identity indicated by the second signaling.

[0155] As a sub-implementation of this embodiment, the first identity is a configuration index.

[0156] As a sub-implementation of this embodiment, the first identity is the index of the RRC information block in the at least one RRC information block.

[0157] As a sub-implementation of this embodiment, the information block including the first identity in the at least one RRC information block is determined to be the first RRC information block.

[0158] As a sub-implementation of this embodiment, each RRC information block in the at least one RRC information block includes an identity.

[0159] As a sub-implementation of this embodiment, only one of the at least one RRC information block includes the first identity, and the only one RRC information block is the first information block.

[0160] As a sub-implementation of this embodiment, each RRC information block in the at least one RRC information block is associated with an identity, and the RRC information block associated with the first identity in the at least one RRC information block is determined as the first RRC information block.

[0161] As a sub-implementation of this embodiment, each of the at least one RRC information blocks is mapped to an identity, and the RRC information block that is mapped to the first identity is determined as the first RRC information block.

[0162] As an example, the phrase "the application of the first RRC information block does not include random access" means or includes: the application of the first RRC information block does not involve and / or does not require random access.

[0163] As an example, the phrase "the application of the first RRC information block does not include random access" means or includes: the application of the first RRC information block is not accompanied by random access.

[0164] As an example, the phrase "the application of the first RRC information block does not include random access" means or includes: the application of the first RRC information block triggers random access.

[0165] As an example, the phrase "application of the first RRC information block does not include random access" means or includes: the first RRC information block indicates that random access is not used.

[0166] As an example, the phrase "application of the first RRC information block does not include random access" means or includes: the first RRC information block indicates RACH-less.

[0167] As an example, the phrase "application of the first RRC information block does not include random access" means or includes: the first RRC information block does not indicate random access resources.

[0168] As an example, the phrase "the application of the first RRC information block does not include random access" means or includes: the first RRC information block is used for cell switching, and when the cell group configured by the first RRC information block is applied as a primary cell group or a secondary cell group, it is not necessary to perform random access for the target cell configured by the first RRC information block.

[0169] As a sub-example of this embodiment, the target cell is the SpCell of the cell group configured in the first RRC information block.

[0170] As an example, the phrase "the application of the first RRC information block does not include random access" means or includes: whether the first RRC information block is successfully applied does not depend on initiating random access.

[0171] As an example, the phrase "application of the first RRC information block does not include random access" means or includes: whether the first RRC information block is successfully applied does not depend on the completion of random access.

[0172] As an example, the phrase "receive the second signaling and start the first timer" means or includes: when the second signaling is received, the first timer will definitely be started.

[0173] As an example, the phrase "receive the second signaling and start the first timer" means or includes: the second signaling triggers the start of the first timer.

[0174] As an example, the meaning of receiving the second signaling phrase and starting the first timer is or includes: the second signaling triggers the application of the first RRC information block, and the application of the first RRC information block includes starting the first timer.

[0175] As an example, the meaning of receiving the second signaling phrase and starting the first timer is or includes: the second signaling triggers the application of the first RRC information block, and the application of the first RRC information block triggers the start of the first timer.

[0176] As an example, the phrase "receive the second signaling and start the first timer" means or includes: the second signaling triggers the application of the first RRC information block, and the application of ReconfigurationWithSync included in the first RRC information block includes or triggers the start of the first timer.

[0177] As an example, the phrase "receive the second signaling" means that starting the first timer means or includes: the first timer is started after the second signaling is received.

[0178] As an example, the first timer is a timer for the RRC layer.

[0179] As an example, the value of the first timer is configured by the first RRC information block.

[0180] As an example, the value of the first timer is determined based on the implementation.

[0181] As an example, the value of the first timer is fixed.

[0182] As an example, the value of the first timer is predefined.

[0183] As one embodiment, the value of the first timer is indicated by the second signaling.

[0184] As an example, the value of the first timer is 20ms.

[0185] As an example, the first timer is a T304 timer.

[0186] As an example, the first timer is a T304a timer.

[0187] As an example, the first timer is a timer for the MAC layer.

[0188] As an example, the name of the first timer includes ltm.

[0189] As one example, each configuration identity indicated by the second signaling corresponds to an instance of the first timer.

[0190] As an example, each of the at least one RRC information blocks corresponds to an instance of the first timer.

[0191] As an example, the stopping of the first timer in the sentence depends on the meaning of receiving the first information, which is or includes: if the first information is not received after the first timer is started, then the first timer will expire.

[0192] As one embodiment, the stopping of the first timer depends on the meaning of receiving the first information, which is or includes: if the first information is received after the first timer has been started, then the first timer is stopped.

[0193] As one example, the first information is signaling.

[0194] As an example, the first information is or includes MAC SDU (service data unit).

[0195] As one example, the first information is or includes MAC CE.

[0196] As a sub-example of this embodiment, the size of the MAC CE is 0.

[0197] As a sub-example of this embodiment, the MAC CE uses a defined logical channel identity.

[0198] As a sub-example of this embodiment, the size of the MAC CE is greater than 0.

[0199] As one embodiment, the first information is or includes signals on the PDCCH (physical downlink control channel).

[0200] As an example, the first information is a field in MAC CE or DCI.

[0201] As an example, the first information occupies 1 bit.

[0202] As one example, the first information occupies multiple bits.

[0203] As one embodiment, the first information is or includes DCI.

[0204] As one embodiment, the first information is or includes HARQ (Hybrid Automatic RepeatreQuest ACK).

[0205] As a sub-example of this embodiment, the HARQ ACK is for the signal sent by the first node.

[0206] As a sub-implementation of this embodiment, the HARQ ACK is for an uplink HARQ process or an uplink HARQ process number.

[0207] As an example, the advantages of the above method include that determining the successful application of the first RRC information block by explicitly receiving the first information is more explicit and reliable, and it is also faster than traditional switching methods.

[0208] As an example, the phrase "failed to successfully apply the one RRC information block in the at least one RRC information block" means that at least one field in the one RRC information block in the at least one RRC information block failed to be applied.

[0209] As an example, the phrase "failed to successfully apply the one of the at least one RRC information blocks" means that the ReconfigurationWithSync field in the one of the at least one RRC information blocks was not successfully applied.

[0210] As an example, the phrase "failed to successfully apply the one of the at least one RRC information blocks" means that the application of the ReconfigurationWithSync field in the one of the at least one RRC information blocks failed.

[0211] As an example, the expiration of the first timer will not trigger an RRC reconstruction.

[0212] As an example, the expiration of the first timer is considered a switching failure, but it will not trigger an RRC rebuild.

[0213] As an example, the expiration of the first timer is considered a failure of Reconfiguration With Sync, but does not trigger an RRC rebuild.

[0214] As an example, the expiration of the first timer is considered a failure of an RRC information block application, but not an LTM or cell handover failure.

[0215] As an example, the expiration of the first timer is considered a failure of the second signaling execution, but not an LTM or cell handover failure.

[0216] As an example, the expiration trigger of the first timer causes a rollback to the original cell group.

[0217] As a sub-implementation of this embodiment, the original cell group is the cell group that sent the second signaling.

[0218] As a sub-implementation of this embodiment, the original cell group is the cell group that sent the at least one RRC information block.

[0219] As a sub-example of this embodiment, the original cell group is the primary cell group or the secondary cell group of the first node when receiving the second signaling.

[0220] As a sub-implementation of this embodiment, when the first RRC information block is used to configure the primary cell group, the original cell group is the primary cell group of the first node when receiving the second signaling; when the first RRC information block is used to configure the secondary cell group, the original cell group is the secondary cell group of the first node when receiving the second signaling.

[0221] As an example, the expiration of the first timer triggers a rollback to the original cell.

[0222] As a sub-example of this embodiment, the original cell is the source cell.

[0223] As a sub-implementation of this embodiment, the original cell is the cell that sent the second signaling.

[0224] As a sub-example of this embodiment, the original cell is the cell that sent the at least one RRC information block.

[0225] As a sub-example of this embodiment, the original cell is the SpCell of the first node when receiving the second signaling.

[0226] As a sub-implementation of this embodiment, when the first RRC information block is used to configure the primary cell group, the original cell is the PCell of the first node when receiving the second signaling; when the first RRC information block is used to configure the secondary cell group, the original cell is the PSCell of the first node when receiving the second signaling.

[0227] As an example, the phrase fallback to the configuration prior to the application of the first RRC information block does not include releasing the signaling radio bearer.

[0228] As a sub-implementation of this embodiment, excluding the release of the signaling radio bearer means that the SRB (signaling radio bearer) of the first node is maintained.

[0229] As an example, the phrase fallback to the configuration prior to the application of the first RRC information block does not include discarding the key.

[0230] As a sub-example of this embodiment, the key is a key included in encryption and integrity.

[0231] As a sub-implementation of this embodiment, the key is used for signaling and data encryption.

[0232] As a sub-example of this embodiment, the first node establishes a secure connection with the network.

[0233] As an example, the phrase fallback to the configuration prior to the application of the first RRC information block does not include the fallback to the previous PDCP state variables used for DRB.

[0234] As a sub-implementation of this embodiment, one DRB corresponds to one PDCP entity.

[0235] As a sub-example of this embodiment, the PDCP state variable is the state variable of a PDCP entity.

[0236] As a sub-implementation of this embodiment, the meaning of PDCP for DRB is PDCP entity associated with DRB.

[0237] As an example, the phrase fallback to the configuration prior to the application of the first RRC information block includes at least a partial MAC reset.

[0238] As a sub-implementation of this embodiment, partial MAC reset refers to partial MAC reset.

[0239] As a sub-example of this embodiment, resetting the MAC includes performing at least one operation, and a partial MAC reset includes only a portion of the at least one operation.

[0240] As a sub-implementation of this embodiment, a portion of resetting the MAC includes clearing the random access cache.

[0241] As a sub-implementation of this embodiment, a portion of resetting the MAC includes clearing the HARQ cache.

[0242] As a sub-implementation of this embodiment, a portion of the MAC reset includes canceling beam failure recovery.

[0243] As a sub-implementation of this embodiment, a portion of resetting the MAC includes canceling pending scheduling requests.

[0244] As a sub-implementation of this embodiment, a partial MAC reset includes stopping at least one timer in the MAC layer.

[0245] As a sub-implementation of this embodiment, a partial MAC reset includes stopping at least one counter in the MAC layer.

[0246] As one embodiment, the radio bearer includes at least a signaling radio bearer and a data radio bearer.

[0247] As an example, the wireless bearer is a service or service interface provided by the PDCP layer to higher layers.

[0248] As a sub-implementation of this embodiment, the higher layers include at least one of the RRC layer, NAS, and SDAP layer.

[0249] As an example, the signaling radio bearer is a service or service interface that PDCP provides to higher layers.

[0250] As a sub-implementation of this embodiment, the higher layers include the RRC layer, at least the former in the NAS.

[0251] As an example, the data radio bearer is a service or service interface that PDCP provides to higher layers.

[0252] As a sub-implementation of this embodiment, the higher layer includes the SDAP layer, at least the former in NAS.

[0253] As an example, the expiration trigger of the first timer is determined from the at least one RRC information block and an RRC information block is applied.

[0254] As a sub-implementation of this embodiment, the second signaling indicates whether an RRC information block is determined and applied from the at least one RRC information block.

[0255] As a sub-implementation of this embodiment, the second signaling indicates which RRC information block to determine and apply from the at least one RRC information block.

[0256] As an example, the expiration of the first timer triggers cell selection.

[0257] As a sub-example of this embodiment, the behavior execution cell selection includes selecting a first cell, applying an RRC information block from the at least one RRC information block, wherein the PCell of the cell group configured by the one RRC information block is the first cell, or the PSCell of the cell group configured by the one RRC information block is the first cell.

[0258] As an example, the advantages of the above method include: not triggering RRC reconstruction helps reduce latency and interruption time.

[0259] As an example, the at least one RRC information block is used to indicate whether the expiration of the first timer triggers an RRC reconstruction.

[0260] As an example, an RRC message carrying at least one RRC information block indicates whether the expiration of the first timer triggers an RRC reconstruction.

[0261] As an example, the first RRC information block indicates whether the expiration of the first timer triggers an RRC reconstruction.

[0262] As a sub-implementation of this embodiment, the AttemptLtm of the first RRC information block indicates whether the expiration of the first timer triggers an RRC reconstruction.

[0263] As a sub-implementation of this embodiment, the AttemptLtmConfig of the first RRC information block indicates whether the expiration of the first timer triggers an RRC reconstruction.

[0264] As one embodiment, the second signaling indicates whether the expiration of the first timer triggers an RRC reconstruction.

[0265] As a sub-implementation of this embodiment, one bit of the second signaling indicates whether the expiration of the first timer triggers an RRC reconstruction.

[0266] As an example, each RRC information block in the at least one RRC information block has the same name.

[0267] As an example, the second signaling does not include the PDU (protocol data unit) of the RRC layer.

[0268] As an example, the second signaling does not include the PDU (protocol data unit) of the RLC layer.

[0269] As one embodiment, the second signaling includes an index or configuration index of one of the at least one RRC information blocks.

[0270] As one embodiment, the second signaling includes an index or configuration index or identity of the cell group configured in one of the at least one RRC information blocks.

[0271] As one embodiment, the second signaling includes an index or configuration index or identity of the cells included in the cell group configured by one of the at least one RRC information blocks.

[0272] As an example, the logical channel occupied by the at least one RRC information block includes DCCH (dedicated control channel).

[0273] As an example, the at least one RRC information block is encrypted.

[0274] As an example, the at least one RRC information block uses integrity protection.

[0275] As an example, the second signaling uses encryption.

[0276] As an example, the second signaling uses integrity protection.

[0277] As an example, the second signaling does not use encryption.

[0278] As an example, the second signaling does not use integrity protection.

[0279] As one example, the second signaling is directed at the first node.

[0280] As an example, the second signaling is only directed at the first node.

[0281] As an example, the physical channel occupied by the second signaling includes the PDCCH (physical downlink control channel).

[0282] As an example, the physical channel occupied by the second signaling includes PDSCH (physical downlink shared channel).

[0283] Example 2

[0284] Example 2 illustrates a schematic diagram of a network architecture according to this application, as shown in the attached diagram. Figure 2 As shown.

[0285] Appendix Figure 2This diagram illustrates the network architecture 200 of 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems. The 5G NR or LTE network architecture 200 can be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable term. 5GS / EPS 200 may include one or more UE (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet services 230. 5GS / EPS can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown in the figure, 5GS / EPS provides packet-switched services; however, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol termination to UE 201. gNB 203 can connect to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Service Set (BSS), Extended Service Set (ESS), TRP (Transmitter Receiver Node), or some other suitable terminology. gNB 203 provides UE 201 with an access point to 5GC / EPC 210. Examples of UE201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional devices.Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. gNB203 connects to 5GC / EPC210 via the S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF 214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF 213. The MME / AMF / SMF211 is the control node that handles signaling between UE201 and 5GC / EPC210. ​​Essentially, the MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW / UPF212, which is itself connected to the P-GW / UPF213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF213 is connected to Internet service 230. Internet service 230 includes operator-compliant Internet Protocol services, specifically including the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0286] As an example, the first node in this application is UE201.

[0287] As an example, the base station of the second node in this application is gNB203.

[0288] As an example, the radio link from UE201 to NR node B is an uplink.

[0289] As an example, the radio link from NR node B to UE201 is a downlink.

[0290] As an example, the UE201 supports relay transmission.

[0291] As an example, the UE201 includes a mobile phone.

[0292] As an example, the UE201 is a vehicle including a car.

[0293] As an example, the gNB203 is a macrocell base station.

[0294] As an example, the gNB203 is a microcell base station.

[0295] As an example, the gNB203 is a pico cell base station.

[0296] As one example, the gNB203 is a flight platform device.

[0297] As an example, the gNB203 is a satellite device.

[0298] Example 3

[0299] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for a user plane and a control plane according to this application, as shown in the attached diagram. Figure 3 As shown. Figure 3 This is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300. Figure 3The radio protocol architecture for the control plane 300 between the first node (a satellite or aircraft in the gNB or NTN) and the second node (a satellite or aircraft in the gNB, UE, or NTN), or between two UEs, is illustrated 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. Layer 1 will be referred to as PHY301 in this document. Layer 2 (L2 layer) 305 sits above PHY301 and is responsible for the link between the first and second nodes and between the two UEs via PHY301. Layer 2 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. PDCP sublayer 304 also provides security through encrypted data packets and supports cross-cell mobility between second nodes to the first node. RLC sublayer 303 provides upper-layer packet segmentation and reassembly, retransmission of lost packets, and packet reordering to compensate for out-of-order reception due to HARQ. MAC sublayer 302 provides multiplexing between logical and transport channels. MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell between first nodes. MAC sublayer 302 is also responsible for HARQ operations. RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for acquiring radio resources (i.e., radio bearers) and configuring the lower layer using RRC signaling between the second and first nodes. PC5-S (PC5 Signaling Protocol) sublayer 307 is responsible for processing the signaling protocol of the PC5 interface. The radio protocol architecture of user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for the first and second nodes in user plane 350 is largely the same as the corresponding layers and sublayers in control plane 300 for physical layer 351, PDCP sublayer 354 in L2 layer 355, RLC sublayer 353 in L2 layer 355 and MAC sublayer 352 in L2 layer 355. However, PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes the SDAP (Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for mapping between QoS flows and Data Radio Bearers (DRBs) to support service diversity. SRBs can be seen as services or interfaces provided by the PDCP layer to higher layers, such as the RRC layer. In NR systems, SRBs include SRB1, SRB2, and SRB3, and SRB4 is also included when secondary link communication is involved, each used to transmit different types of control signaling. SRBs are bearers between the UE and the access network, used to transmit control signaling, including RRC signaling, between the UE and the access network. SRB1 is particularly important for the UE; after each UE establishes an RRC connection, there will be an SRB1 used to transmit RRC signaling. Most signaling is transmitted through SRB1. If SRB1 is interrupted or unavailable, the UE must re-establish RRC. SRB2 is generally only used to transmit NAS signaling or security-related signaling. UEs may not configure SRB3. Except for emergency services, the UE must establish an RRC connection with the network for subsequent communication. Although not illustrated, the first node may have several upper layers above L2 layer 355. It also includes a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., remote UE, server, etc.). For UEs involving relay services, their control plane may also include an adaptation sublayer SRAP (Sidelink Relay Adaptation Protocol) 308, and their user plane may also include an adaptation sublayer SRAP 358. The introduction of the adaptation layer helps lower layers, such as the MAC layer and RLC layer, to multiplex and / or differentiate data from multiple source UEs. For nodes not involved in relay communication, PC5-S307, SRAP 308, and SRAP 358 are not required during communication.

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

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

[0302] As an example, the at least one RR information block in this application is generated in RRC306.

[0303] As an example, the second signaling in this application is generated in MAC302 or PHY301.

[0304] As an example, the third signaling in this application is generated in MAC302 or PHY301.

[0305] As an example, the first information in this application is generated by MAC302 or PHY301.

[0306] As an example, the first measurement result in this application is generated by MAC302 or PHY301.

[0307] As an example, the first confirmation information in this application is generated in MAC302 or PHY301.

[0308] Example 4

[0309] Example 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of this application, as shown in the attached diagram. Figure 4 As shown. Figure 4 This is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in the access network.

[0310] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmitting processor 468, a receiving processor 456, and optionally may also include a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0311] The second communication device 410 includes a controller / processor 475, a memory 476, a receiver processor 470, a transmitter processor 416, and optionally may also include a multi-antenna receiver processor 472, a multi-antenna transmitter processor 471, a transmitter / receiver 418, and an antenna 420.

[0312] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper-layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements Layer 2 (L2) functionality. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmitting lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). Transmit processor 416 performs encoding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, and mapping of signal clusters based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-Phase Shift Keying (M-PSK), M-QAM). Multi-antenna transmit processor 471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based and non-codebook-based precoding, and beamforming processing, generating one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes it with a reference signal (e.g., a pilot) in the time and / or frequency domains, and subsequently uses inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multicarrier symbol stream. Multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmitter processor 471 into an radio frequency stream, which is then provided to different antennas 420.

[0313] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream, which is then provided to the receiver processor 456. The receiver processor 456 and the multi-antenna receiver processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiver processor 458 performs receive analog precoding / beamforming operations on the baseband multicarrier symbol stream from the receiver 454. The receiver processor 456 uses a Fast Fourier Transform (FFT) to convert the baseband multicarrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiver processor 456, where the reference signal is used for channel estimation, and the data signal is recovered in the multi-antenna receiver processor 458 after multi-antenna detection to recover any spatial stream destined for the first communication device 450. Symbols on each spatial stream are demodulated and recovered in the receive processor 456, generating 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 over the physical channel. The upper-layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of Layer 2. The controller / processor 459 may be associated with a memory 460 storing program code and data. The memory 460 may be referred to as computer-readable media. In the transmission from the second communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport and logical channels to recover upper-layer data packets from the core network. The upper-layer data packets are then provided to all protocol layers above Layer 2. Various control signals may also be provided to Layer 3 for Layer 3 processing.

[0314] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, a data source 467 is used to provide upper-layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functions at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmitting lost packets and signaling to the second communication device 410. Transmit processor 468 performs modulation mapping and channel coding processing, while multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming processing. Subsequently, transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding / beamforming operations in multi-antenna transmit processor 457, the stream is provided to different antennas 452 via transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by multi-antenna transmit processor 457 into a radio frequency symbol stream before providing it to antenna 452.

[0315] In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the receiving function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly implement the L1 layer functions. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be referred to as computer-readable media. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between the transmission and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper-layer data packets from the UE 450. Upper-layer data packets from the controller / processor 475 can be provided to the core network.

[0316] As one embodiment, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the first communication device 450 at least: receives at least one RRC information block, each of the at least one RRC information block being used to configure a cell group; the application of any of the at least one RRC information block depends on receiving signaling other than the at least one RRC information block; receives second signaling; the second signaling is signaling of a protocol layer below the RRC layer; in response to receiving the second signaling, applies a first RRC information block, the second signaling indicating the first RRC information block in the at least one RRC information block; the application of the first RRC information block does not include random access; with the receipt of the second signaling, starts a first timer; the stopping of the first timer depends on receiving first information, the first information being generated by a protocol layer below the RRC layer; the receipt of the first information is used to determine that the first RRC information block has been successfully applied; wherein, the expiration of the first timer is used to determine that the first RRC information block has not been successfully applied.

[0317] As one embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: receiving at least one RRC information block, each of the at least one RRC information block being used to configure a cell group; the application of any of the at least one RRC information block depending on the reception of signaling other than the at least one RRC information block; receiving second signaling; the second signaling being signaling of a protocol layer below the RRC layer; in response to receiving the second signaling, applying a first RRC information block, the second signaling indicating the first RRC information block in the at least one RRC information block; the application of the first RRC information block not including random access; and, accompanying the reception of the second signaling, starting a first timer; the stopping of the first timer depending on the reception of first information generated by a protocol layer below the RRC layer; the reception of the first information being used to determine that the first RRC information block was successfully applied; wherein, the expiration of the first timer being used to determine that the first RRC information block was not successfully applied.

[0318] As an example, the first communication device 450 corresponds to the first node in this application.

[0319] As an example, the second communication device 410 corresponds to the second node in this application.

[0320] As an example, the first communication device 450 is a UE.

[0321] As an example, the first communication device 450 is a vehicle-mounted terminal.

[0322] As an example, the first communication device 450 is a mobile phone.

[0323] As one embodiment, the second communication device 450 is a relay.

[0324] As one embodiment, the second communication device 410 is a satellite.

[0325] As one embodiment, the second communication device 410 is an aircraft.

[0326] As one embodiment, the second communication device 410 is a base station.

[0327] As one embodiment, receiver 454 (including antenna 452), receiver processor 456 and controller / processor 459 are used to receive the at least one RRC information block in this application.

[0328] As one embodiment, receiver 454 (including antenna 452), receiver processor 456 and controller / processor 459 are used in this application to receive the second signaling.

[0329] As one embodiment, receiver 454 (including antenna 452), receiver processor 456 and controller / processor 459 are used in this application to receive the third signaling.

[0330] As one embodiment, receiver 454 (including antenna 452), receiver processor 456 and controller / processor 459 are used in this application to receive the first information.

[0331] As one embodiment, a transmitter 454 (including an antenna 452), a transmitter processor 468, and a controller / processor 459 are used in this application to transmit the first measurement result.

[0332] As one embodiment, a transmitter 454 (including an antenna 452), a transmitter processor 468, and a controller / processor 459 are used in this application to transmit the first confirmation information.

[0333] Example 5

[0334] Example 5 illustrates a wireless signal transmission flowchart according to an embodiment of this application, as shown in the attached diagram. Figure 5 As shown. (Attached) Figure 5In this example, U01 corresponds to the first node of this application. It should be noted that the order in this example does not limit the signal transmission order and the implementation order in this application. The steps in F51 and F52 are optional.

[0335] for First node U01 In step S5101, at least one RRC information block is received; in step S5102, a first measurement result is sent; in step S5103, a second signaling is received; in step S5104, one of the first RRC information blocks is applied; in step S5105, a first message is received; in step S5106, a first confirmation message is sent; in step S5107, a third signaling is received; and in step S5108, a second RRC information block is applied.

[0336] for Second node U02 In step S5201, at least one RRC information block is sent; in step S5202, a first measurement result is received; in step S5203, a second signaling is sent; and in step S5204, a third signaling is sent.

[0337] In Embodiment 5, each of the at least one RRC information blocks is used to configure a cell group; the application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block; the second signaling is signaling of a protocol layer below the RRC layer; in response to receiving the second signaling, a first RRC information block is applied, the second signaling indicating the first RRC information block in the at least one RRC information block; the application of the first RRC information block does not include random access; with the reception of the second signaling, a first timer is started; the stopping of the first timer depends on receiving first information, the first information being generated by a protocol layer below the RRC layer; the reception of the first information is used to determine that the first RRC information block has been successfully applied; wherein, the expiration of the first timer is used to determine that the first RRC information block has not been successfully applied.

[0338] As one example, the second node U02 is a base station.

[0339] As one example, the second node U02 is a network device.

[0340] As an example, the second node U02 is the source cell of the first node U01.

[0341] As an example, the second node U02 is the source SpCell of the first node U01.

[0342] As an example, the second node U02 is the primary cell group of the first node U01.

[0343] As an example, the second node U02 is the PCell of the first node U01 when receiving the at least one RRC information block.

[0344] As an example, the first node U01 switches from the second node U02 to the target SpCell.

[0345] As a sub-example of this embodiment, the first node U01 switches to the target SpCell via LTM.

[0346] As an example, each of the at least one RRC information block includes pre-configured parameters for switching.

[0347] As one example, the switching includes LTM.

[0348] As an example, the SpCell of the first node U01 after successfully completing step S5104 is the cell configured by the first RRC information block.

[0349] As an example, the air interface between the first node U01 and the second node U02 is the Uu interface.

[0350] As an example, the first node U01 is in the RRC connected state.

[0351] As an example, the cells included in the cell group configured by the at least one RRC information block are nodes other than the second node U02.

[0352] As an example, when the second node U02 receives the first confirmation information, it determines the cell switch.

[0353] As one embodiment, the cell switching is or includes LTM.

[0354] As an example, the second node U02 determines cell switching based on the first measurement result, which includes the L1 measurement result or the target cell recommended based on the L1 measurement result.

[0355] As a sub-example of this embodiment, the target cell includes the cells included in the cell group configured by the first RRC information block.

[0356] As a sub-example of this embodiment, the target cell includes the SpCells included in the cell group configured by the first RRC information block.

[0357] As an example, L3 (layer 3) based measurement means: processing the measured data using an L3 filter.

[0358] As an example, L1 (layer 1) based measurement means: processing the measured data using an L1 filter.

[0359] As an example, the measurement results of L3 are smoother than those of L1, but it takes longer to obtain them.

[0360] As an example, L1 measurement results can be obtained faster, but it is prone to ping-pong handover; L2 results are more stable, but the acquisition time is longer, which can easily lead to disconnection before handover. The method proposed in this application can perform fast handover between multiple candidate cells, avoiding disconnection and data interruption caused by traditional ping-pong handover.

[0361] As an example, the SpCells included in at least one cell group configured by the first node U01 for the at least one RRC information block do not need to use random access.

[0362] As an example, the at least one RRC information block is used to configure the first measurement result.

[0363] As an example, step S5101 occurs before step S5102.

[0364] As an example, step S5101 occurs before step S5103.

[0365] As an example, step S5104 follows step S5103.

[0366] As an example, step S5103 follows step S5102.

[0367] As an example, step S5201 occurs before step S5202.

[0368] As an example, step S5203 follows step S5202.

[0369] As an example, step S5105 occurs before step S5106.

[0370] As an example, step S5107 occurs before step S5108.

[0371] As an example, when the first RRC information block fails to be applied, the sender of the third signaling is the second node U02.

[0372] As an example, when the first RRC information block is successfully applied, the sender of the third signaling is the SpCell of the cell group configured by the first RRC information block.

[0373] As an example, when the first RRC information block is successfully applied, the sender of the third signaling is the PCell of the cell group configured by the first RRC information block; the first RRC information block is used to configure the primary cell group.

[0374] As an example, the first measurement result is used to trigger the second signaling.

[0375] As an example, the first measurement result is used to indicate whether the conditions for triggering the application associated with the at least one RRC information block are met.

[0376] As an example, the at least one RRC information block is used to configure the measurement on which the first measurement result is based.

[0377] As an example, the RRCReconfiguration message to which the at least one RRC information block belongs is used to configure the measurement on which the first measurement result is based.

[0378] As an example, the execution of each RRC information block in the at least one RRC information block depends on the second signaling.

[0379] As an example, the execution of each of the at least one RRC information blocks depends on the second signaling, including: the at least one RRC information block is not executed immediately or automatically after being received, but waits for the second signaling, and one of the at least one RRC information blocks will be executed only when triggered by the second signaling.

[0380] As an example, the second signaling is DCI.

[0381] As an example, the first node U01 listens to the PDCCH to receive the second signaling.

[0382] As an example, the second signaling is unicast.

[0383] As one embodiment, the second signaling indicates the reference signal resources of the target SpCell.

[0384] As an example, the second signaling indicates the beam information of the target SpCell.

[0385] As an example, the first measurement result indicates the recommended reference signal resource for the target SpCell.

[0386] As an example, the first measurement result indicates the beam information of the recommended target SpCell.

[0387] As an example, in step S5104, applying one of the at least one RRC information blocks includes applying the TCI (transmission configuration indication) state.

[0388] As an example, in step S5104, applying the first RRC information block includes applying the TCI (transmission configuration indication) state of the SpCell of the cell group configured for the first RRC information block.

[0389] As an example, in step S5104, applying the first RRC information block includes the TCI (transmission configuration indication) status associated with the SpCell of the cell group configured by applying the first RRC information block.

[0390] As an example, step S5104 includes applying a unified TCI state.

[0391] As an example, after receiving the at least one RRC information block, the first node U01 provides feedback confirmation.

[0392] As an example, the at least one RRC information block is included in at least one RRCReconfiguration message.

[0393] As an example, the application of one of the at least one RRC information blocks will not be accompanied by a random access procedure for the cell configured for one of the at least one RRC information blocks.

[0394] As an example, the first measurement result is used to report measurement results or to report recommended target cells or recommended reference signal resources.

[0395] As an example, the at least one RRC information block includes a second threshold, which is used to control the transmission of the first measurement result.

[0396] As a sub-implementation of this embodiment, the first measurement result is sent only when the quality of the current cell does not meet the second threshold.

[0397] As a sub-implementation of this embodiment, the first measurement result is sent only if the measurement result meets the second threshold.

[0398] As an example, the at least one RRC information block indicates the random access resources of the cell configured for the at least one RRC information block.

[0399] As an example, the first measurement result is used to trigger the second signal.

[0400] As an example, each of the at least one RRC information block is used to configure a target cell group.

[0401] As an example, each of the at least one RRC information block is used to configure a candidate target cell group.

[0402] As one example, the sender of the first information is a cell other than the second node U02.

[0403] As a sub-implementation of this embodiment, the first RRC information block is used to configure the primary cell group.

[0404] As an example, the sender of the first information is the SpCell of the cell group configured by the first RRC information block.

[0405] As an example, the first information does not belong to the random access process.

[0406] As an example, the first information is not used to determine the completion of a random access procedure.

[0407] As an example, the first information is a physical layer signal.

[0408] As an example, the first information is a signal on a reference signal resource.

[0409] As an example, the first information is a measurement result on a reference signal resource.

[0410] As an example, there is a fixed time interval between receiving the first information and applying the first RRC information block.

[0411] As one example, the transmission of the first confirmation information depends on the reception of the first information.

[0412] As an example, the first confirmation information is sent only upon receiving the first information.

[0413] In one embodiment, the recipient of the first confirmation information is the same as the sender of the first information.

[0414] As one embodiment, the first confirmation information is or includes a physical layer signal.

[0415] As one embodiment, the first confirmation information is or includes UCI (uplink control information).

[0416] As one example, the first confirmation information is or includes MAC CE.

[0417] As one embodiment, the first confirmation information is or includes an SR (Schedule Request).

[0418] As one example, the first confirmation information is generated from a sequence or a pseudo-random sequence.

[0419] As an example, the third signaling is signaling at the protocol layer below the RRC layer.

[0420] As an example, the third signaling is or includes MAC CE.

[0421] As one example, the third signaling includes DCI.

[0422] As an example, the third signaling has the same name as the second signaling.

[0423] As an example, the third signaling is generated by the same protocol layer as the second signaling.

[0424] As an example, the first node U01, in response to receiving the third signaling, applies a second RRC information block.

[0425] As a sub-implementation of this embodiment, the second RRC information block is not the first RRC information block.

[0426] As a sub-implementation of this embodiment, the second RRC information block is the first RRC information block.

[0427] As a sub-example of this embodiment, applying the second RRC information block includes applying each configuration parameter in the second RRC information block.

[0428] As a sub-example of this embodiment, applying the second RRC information block includes stopping at least one timer other than the first timer.

[0429] As a sub-implementation of this embodiment, applying the second RRC information block includes configuring physical resources.

[0430] As a sub-implementation of this embodiment, the application of the second RRC information block includes configuring reference signal resources.

[0431] As a sub-implementation of this embodiment, the second RRC information is used to configure the MCG, and applying the second RRC information block includes releasing the current MCG.

[0432] As a sub-implementation of this embodiment, the second RRC information is used to configure the MCG, and the application of the second RRC information block includes releasing the SCell of the current MCG.

[0433] As an example, the third signaling indicates the second RRC information block in the at least one RRC information block.

[0434] As a sub-implementation of this embodiment, the third signaling indicates the identity of the second RRC information block.

[0435] As a sub-implementation of this embodiment, the third signaling indicates the index of the second RRC information block in the at least one RRC information block.

[0436] As a sub-implementation of this embodiment, the third signaling indicates the configuration identity or configuration index of the second RRC information block.

[0437] As a sub-implementation of this embodiment, the second RRC information block includes a configuration identity or a configuration index.

[0438] As one embodiment, the second RRC information block includes triggering random access.

[0439] As a sub-example of this embodiment, the random access is for the SpCell of the cell group configured for the second RRC information block.

[0440] As an example, the successful application of the second RRC information block depends on the successful completion of random access.

[0441] As a sub-example of this embodiment, the random access is for the SpCell of the cell group configured for the second RRC information block.

[0442] As one example, the application of the second RRC information block includes random access.

[0443] As a sub-example of this embodiment, the random access is for the SpCell of the cell group configured for the second RRC information block.

[0444] As an example, the application of the second RRC information block involves random access.

[0445] As a sub-example of this embodiment, the random access is for the SpCell of the cell group configured for the second RRC information block.

[0446] As an example, successful application of the second RRC information block requires random access.

[0447] As a sub-example of this embodiment, the random access is for the SpCell of the cell group configured for the second RRC information block.

[0448] As an example, the application of the second RRC information block is accompanied by random access.

[0449] As a sub-example of this embodiment, the random access is for the SpCell of the cell group configured for the second RRC information block.

[0450] As an example, the first node U01 starts the first timer upon receiving the third signaling.

[0451] As an example, the meaning of starting the first timer in conjunction with the receipt of the third signaling is or includes: the receipt of the third signaling triggers the start of the first timer.

[0452] As an example, the meaning of starting the first timer in conjunction with the receipt of the third signaling is or includes: the receipt of the third signaling triggers the application of the second RRC information block, and the application of the second RRC information block includes starting the first timer.

[0453] As an example, the meaning of starting the first timer in conjunction with the receipt of the third signaling is or includes: the receipt of the third signaling triggers the application of the second RRC information block, and the application of the second RRC information block triggers or is accompanied by the start of the first timer.

[0454] As an example, starting a timer in this application includes starting and restarting.

[0455] As an example, the first node U01 stops the first timer in response to the successful completion of random access to a cell in the cell group configured for the second RRC information block.

[0456] As an example, the first node U01, along with the application of the second RRC information block, initiates a random access procedure, and stops the first timer as a response to the successful completion of the random access procedure.

[0457] As a sub-example of this embodiment, the random access procedure is for cells in the cell group configured in the second RRC information block.

[0458] As a sub-example of this embodiment, the random access procedure is for the SpCell cell of the cell group configured in the second RRC information block.

[0459] As an example, the first node U01, the application of the second RRC information block uses, includes, or triggers a random access procedure, and in response to the successful completion of the random access procedure, stops the first timer.

[0460] As a sub-example of this embodiment, the random access procedure is for cells in the cell group configured in the second RRC information block.

[0461] As a sub-example of this embodiment, the random access procedure is for the SpCell cell of the cell group configured in the second RRC information block.

[0462] As an example, the second RRC information block is an RRC information block other than the first RRC information block among the at least one RRC information blocks.

[0463] As an example, the third signaling indicates whether random access is required when applying the second RRC information block.

[0464] As one embodiment, the second RRC information block is used to indicate whether random access is required when applying the second RRC information block.

[0465] As an example, after the first RRC information block is successfully applied, the at least one RRC information block will not be automatically released.

[0466] As an example, after the first RRC information block is successfully applied, the at least one RRC information block will not be released unless instructed by the network.

[0467] As an example, after the first RRC information block is successfully applied, the RRC message blocks other than the first RRC message block in the at least one RRC information block will not be automatically released.

[0468] As an example, after the first RRC information block is successfully applied, the RRC message blocks other than the first RRC message block in the at least one RRC information block will not be released unless otherwise indicated by the network.

[0469] As an example, the advantages of the above method include reducing signaling overhead, which is particularly useful for scenarios involving intra-CU and / or intra-DU.

[0470] As an example, the third signaling is sent when the first RRC information block is not successfully applied.

[0471] As an example, the third signaling does not depend on whether the first RRC information block is successfully applied.

[0472] As an example, steps S5107 and S5108 occur simultaneously.

[0473] Example 6

[0474] Example 6 illustrates a schematic diagram of an LTM according to an embodiment of this application, as shown in the attached diagram. Figure 6 As shown, attached Figure 6 The mobile phone in the image corresponds to the first node in this application, and the straight line with the arrow indicates that the first node moves from the source SpCell to the target SpCell.

[0475] As an example, LTM is mobility triggered by layer 1 and / or layer 2.

[0476] As a sub-implementation of this embodiment, Layer 1 refers to the signaling of Layer 1.

[0477] As a sub-implementation of this embodiment, layer 1 refers to DCI.

[0478] As a sub-implementation of this embodiment, Layer 1 refers to the signaling of Layer 2.

[0479] As a sub-implementation of this embodiment, layer 1 refers to MAC CE.

[0480] As an example, LTM includes switching from the source SpCell to the target SpCell.

[0481] As a sub-example of this embodiment, the phrase "switch from source SpCell to target SpCell" means "switch from source PCell to target PCell".

[0482] As a sub-example of this embodiment, the phrase "switch from source SpCell to target SpCell" means switching from source PSCell to target PSCell.

[0483] As an example, the source SpCell is the PCell of the MCG when the first node receives the second signaling.

[0484] As a sub-implementation of this embodiment, the first RRC information block is used to configure the MCG.

[0485] As an example, the source SpCell is the PSCell of the SCG when the first node receives the second signaling.

[0486] As a sub-implementation of this embodiment, the first RRC information block is used to configure SCG.

[0487] As an example, the SpCell of the cell group configured in the first RRC information block is the target SpCell.

[0488] As an example, after successfully executing LTM, the target SpCell becomes the SpCell of the first node, and the source SpCell is no longer the SpCell of the first node.

[0489] As an example, Appendix Figure 6 The source SpCell in the equation is the cell that sent the at least one RRC information block.

[0490] As an example, the first node receives at least one RRC information block from the source SpCell, sends a first signal near the boundary between the source SpCell and the target SpCell, and then receives a second signaling from the source SpCell. The second signaling instructs the execution of the first RRC information block. After the first RRC information block is completed, the first node switches to the target SpCell.

[0491] As an example, when the first node fails to execute the first RRC information block, the first node does not initiate RRC connection reconstruction.

[0492] As a sub-example of this embodiment, the first node selects a cell from the SpCell of the cell group configured by the at least one RRC information block and applies the cell group RRC information block of the at least one RRC information block that is configured with this SpCell.

[0493] As a sub-implementation of this embodiment, the receipt of the second signaling triggers the start of the second timer.

[0494] As a sub-implementation of this embodiment, before the second timer expires, if the first node fails to successfully apply the RRC information block in the at least one RRC information block, it may select and apply one of the at least one RRC information blocks.

[0495] As a sub-implementation of this embodiment, the expiration of the second timer triggers the RRC connection reconstruction.

[0496] As an example, in traditional cell handover, the source SpCell is configured with measurement and reporting. When the first node is at the cell edge, it sends a report when the reporting conditions are met. The report generally includes the measurement results of the target SpCell. Based on the measurement report, the source SpCell sends signaling to hand over to the target SpCell. After receiving the handover signaling, the first node initiates a random access procedure to the target SpCell and then hands over to the target SpCell. The entire process is based on RRC signaling, and the measurement and reporting are based on L3 and require random access, resulting in high latency.

[0497] As an example, the source SpCell and the target SpCell belong to different cell groups.

[0498] As an example, the source SpCell and the target SpCell belong to the same cell group.

[0499] As an example, during the process of switching from the source SpCell to the target SpCell, the first node does not need to initiate random access for the target SpCell.

[0500] As an example, during the process of switching from the source SpCell to the target SpCell, the first node determines whether the switch has been successfully performed by checking whether the first timer has expired.

[0501] As an example, the phrase switching in this application is or includes LTM.

[0502] As an example, the phrase handover in this application is or includes cell switching.

[0503] As an example, the advantage of the above method is that it can shorten the handover latency by eliminating the need for random access.

[0504] Example 7

[0505] Example 7 illustrates a schematic diagram of how the receipt of first information according to an embodiment of this application is used to determine that the first RRC information block has been successfully applied, as shown in the attached diagram. Figure 7 As shown.

[0506] As an example, receiving the first information is sufficient to determine that the first RRC information block has been successfully applied.

[0507] As an example, the successful application of the first RRC information block means or includes: successfully establishing a connection with the SpCell of the cell group configured by the first RRC information block.

[0508] As an example, the successful application of the first RRC information block means or includes: a successful handover to the SpCell of the cell group configured by the first RRC information block.

[0509] As an example, the successful application of the first RRC information block means or includes: a successful handover to the cell group configured by the first RRC information block.

[0510] As an example, the successful application of the first RRC information block means or includes: the second signaling was successfully executed.

[0511] As an example, receiving the first information is sufficient to determine that the second signaling has been successfully executed, and the successful execution of the second signaling means that the first RRC information block has been successfully applied.

[0512] As an example, the first information occupies the resources of the cell group configured in the first RRC information block.

[0513] As an example, the first information is a signal on the PDCCH.

[0514] As an example, the first information is a reference signal.

[0515] As one example, the first information is a or the first downlink SDU or PDU.

[0516] As an example, the first information is a dedicated downlink signal or a first dedicated downlink signal.

[0517] As an example, the first information is the downlink reference signal received for the first time.

[0518] As a sub-example of this embodiment, the downlink reference signal occupies the resources of the target SpCell.

[0519] As a sub-implementation of this embodiment, the downlink reference signal occupies the resources indicated by the first RRC information block.

[0520] As an example, the first information explicitly indicates that LTM was successful.

[0521] As a sub-example of this embodiment, LTM successfully determined that the first RRC information block was successfully applied.

[0522] As an example, the first information explicitly indicates that the second signaling was executed successfully.

[0523] As a sub-example of this embodiment, the successful execution of the second signaling determines that the first RRC information block was successfully applied.

[0524] As an example, the first information explicitly indicates that the first RRC information block was successfully applied.

[0525] As an example, the first information is used to confirm the first indication information.

[0526] As an example, the first node sends the first indication information.

[0527] As an example, the application of the first RRC message block includes sending the first indication information.

[0528] As an example, the application of the first RRC message block is accompanied by the sending of the first indication information.

[0529] As an example, the application of the first RRC message block triggers the sending of the first indication information.

[0530] As an example, the first indication information is configured by the first RRC information block.

[0531] As an example, the first indication information occupies the resources of the cell group configured in the first RRC information block.

[0532] As an example, the first indication information occupies the resources of the SpCell of the cell group configured by the first RRC information block.

[0533] As one embodiment, the first indication information is or includes physical layer signals.

[0534] As one embodiment, the first indication information is or includes SR.

[0535] As one embodiment, the first indication information is or includes UCI.

[0536] As one embodiment, the first indication information includes an uplink reference signal.

[0537] As an example, the first indication information occupies the PUCCH (physical uplink control channel).

[0538] As an example, the first indication information is used to indicate entry into a SpCell.

[0539] As a sub-implementation of this embodiment, the SpCell is the SpCell of the cell group configured by the first RRC information block.

[0540] As an example, the first indication information is used to indicate that a connection has been established with a SpCell.

[0541] As a sub-implementation of this embodiment, the SpCell is the SpCell of the cell group configured by the first RRC information block.

[0542] As an example, the first indication information is used to indicate that LTM has been performed.

[0543] As an example, the first indication information is used to indicate that the RRC information block in the at least one RRC information block has been applied.

[0544] As an example, the first indication information explicitly indicates that the first RRC information block was successfully applied.

[0545] As an example, the first indication information indirectly indicates that the first RRC information block was successfully applied.

[0546] Example 8

[0547] Example 8 illustrates a schematic diagram of how the expiration of a first timer according to an embodiment of this application is used to determine the failure to successfully apply a first RRC information block, as shown in the attached diagram. Figure 8 As shown.

[0548] As an example, the phrase "failed to successfully apply the one RRC information block in the at least one RRC information block" means that at least one field in the one RRC information block in the at least one RRC information block failed to be applied.

[0549] As an example, the phrase "failed to successfully apply the one RRC information block in the at least one RRC information block" means that "failed to successfully apply ReconfigurationWithSync in the one RRC information block in the at least one RRC information block".

[0550] As an example, the phrase "failed to successfully apply the one of the at least one RRC information blocks" means that the application of ReconfigurationWithSync in the one of the at least one RRC information blocks failed.

[0551] As an example, the first timer is associated with the application of the first RRC information block.

[0552] As an example, the start of the first timer is triggered by the application of the first RRC information block, and the expiration of the first timer means that the first RRC information block has not been successfully applied.

[0553] As an example, if the expiration of the first timer is caused by the application of the first RRC information block, then the expiration of the first timer determines that the first RRC information block has failed to be applied successfully.

[0554] As an example, if the start of the first timer is caused by the application of the first RRC information block, then the expiration of the first timer indicates that the first RRC information block has failed to be applied successfully.

[0555] As an example, if the start of the first timer is caused by LTM, then the expiration of the first timer determines that the RRC information block in the at least one RRC information block failed to be applied successfully; the first RRC information block is the RRC information that was attempted to be applied in the at least one RRC information block.

[0556] As an example, if the reconfigurationWithSync that triggers the start of the first timer is included by the at least one RRC information block, then the expiration of the first timer determines that the RRC information block in the at least one RRC information block failed to be applied successfully; the first RRC information block is the RRC information that was attempted to be applied in the at least one RRC information block.

[0557] As an example, the first node considers the application of the first RRC information block to have failed when the first timer expires.

[0558] As an example, the first node considers LTM or an LTM failure when the first timer expires.

[0559] As an example, failure to successfully apply the first RRC information block means failure to successfully execute the second signaling.

[0560] As an example, the first timer is a timer of the MAC layer, and the expiration of the first timer triggers the MAC layer to send an indication to a higher layer.

[0561] As a sub-implementation of this embodiment, the higher layer includes the RRC layer.

[0562] As a sub-implementation of this embodiment, the higher layer includes an RLC layer.

[0563] As a sub-implementation of this embodiment, the higher layer includes the NAS layer.

[0564] As a sub-example of this embodiment, the indication includes LTM failure.

[0565] As a sub-example of this embodiment, the indication includes failure to successfully hand over to the target cell.

[0566] As a sub-implementation of this embodiment, the indication includes the expiration of the first timer.

[0567] As a sub-implementation of this embodiment, when the higher layer receives the indication, the higher layer determines that the application of the first RRC information block has failed.

[0568] Example 9

[0569] Example 9 illustrates a schematic diagram of how first confirmation information according to an embodiment of this application is used to indicate the application of a first RRC information block, as shown in the attached diagram. Figure 9 As shown.

[0570] As an example, the first confirmation message indicates that the first RRC information block was successfully applied.

[0571] As a sub-example of this embodiment, the recipient of the first confirmation information is the target cell.

[0572] As a sub-implementation of this embodiment, the recipient of the first confirmation information is the cell group configured by the first RRC information block.

[0573] As a sub-implementation of this embodiment, the recipient of the first confirmation information is the SpCell of the cell group configured by the first RRC information block.

[0574] As an example, the first confirmation message indicates that the first RRC information block was not successfully applied.

[0575] As a sub-implementation of this embodiment, the recipient of the first confirmation information is the source cell.

[0576] As a sub-implementation of this embodiment, the recipient of the first confirmation information is the sender of the first RRC information block.

[0577] As a sub-implementation of this embodiment, the recipient of the first confirmation information is the sender of the second signaling.

[0578] As one embodiment, the first confirmation information is or includes the L1 measurement result.

[0579] As a sub-implementation of this embodiment, the first node sends the first confirmation information only when the first RRC information block is not successfully applied.

[0580] As a sub-example of this embodiment, the L1 measurement result has the same signaling or message name as the first measurement result.

[0581] As a sub-example of this embodiment, when the first confirmation information is received, the recipient of the first confirmation information believes or may believe or assume that the first RRC information block has not been successfully applied.

[0582] As one embodiment, the first confirmation information is or includes signals during the random access process.

[0583] As a sub-implementation of this embodiment, only when an RRC information block including a random access procedure is applied.

[0584] As one embodiment, the first confirmation information is or includes an uplink signal.

[0585] As a sub-example of this embodiment, any uplink signal occupies the resources of the target cell.

[0586] As a sub-example of this embodiment, any uplink signal occupies the resources of the cell group configured in the first RRC information block.

[0587] As a sub-example of this embodiment, any uplink signal occupies the resources of the SpCell of the cell group configured by the first RRC information block.

[0588] As a sub-implementation of this embodiment, the first confirmation information is used to determine that the first RRC information block was successfully applied.

[0589] As a sub-example of this embodiment, the first confirmation information is sent on the PUCCH.

[0590] As a sub-implementation of this embodiment, the first confirmation information includes UCI.

[0591] As a sub-example of this embodiment, the first confirmation information includes MAC CE.

[0592] As one embodiment, the first confirmation information is or includes any uplink signal.

[0593] As a sub-example of this embodiment, any uplink signal occupies the resources of the target cell.

[0594] As a sub-example of this embodiment, any uplink signal occupies the resources of the cell group configured in the first RRC information block.

[0595] As a sub-example of this embodiment, any uplink signal occupies the resources of the SpCell of the cell group configured by the first RRC information block.

[0596] As a sub-implementation of this embodiment, the first confirmation information is used to determine that the first RRC information block was successfully applied.

[0597] As an example, the first confirmation information is used to indicate that the target cell has been reached or the SpCell of the cell group configured by the first RRC information block has been reached.

[0598] As a sub-implementation of this embodiment, the first confirmation information is sent only after the first RRC information block has been successfully applied.

[0599] As a sub-implementation of this embodiment, after receiving the first confirmation information, it can be considered that the first RRC information block has been successfully applied.

[0600] As an example, the first confirmation information is used to trigger the first information, and receiving the first information can determine that the first RRC information block has been successfully applied.

[0601] Example 10

[0602] Example 10 illustrates a structural block diagram of a processing apparatus for a first node according to an embodiment of this application; as shown in the appendix. Figure 10 As shown. In the appendix Figure 10 In the first node, the processing device 1000 includes a first receiver 1001, a first transmitter 1002, and a first processor 1003. In embodiment 10,

[0603] A first receiver 1001 receives at least one RRC information block, each of the at least one RRC information block being used to configure a cell group; the application of any RRC information block in the at least one RRC information block depends on receiving signaling other than the at least one RRC information block.

[0604] The first receiver 1001 receives a second signaling; the second signaling is signaling at a protocol layer below the RRC layer; in response to receiving the second signaling, a first RRC information block is applied, the second signaling indicating the first RRC information block in the at least one RRC information block; the application of the first RRC information block does not include random access; along with the reception of the second signaling, a first timer is started; the stopping of the first timer depends on the reception of first information, the first information being generated by a protocol layer below the RRC layer; the reception of the first information is used to determine that the first RRC information block has been successfully applied;

[0605] The expiration of the first timer is used to determine that the first RRC information block was not successfully applied.

[0606] As an example, the first transmitter 1002 transmits a first measurement result, the first measurement result being the L1 measurement result;

[0607] The first transmitter sends a first confirmation message, which is used to indicate that the first RRC information block is applied;

[0608] Specifically, the action of sending the first measurement result is executed before receiving the second signaling; the action of sending the first confirmation information is executed after receiving the second signaling.

[0609] As one embodiment, the first receiver 1001 receives a third signaling, which is signaling at a protocol layer below the RRC layer; in response to receiving the third signaling, it applies a second RRC information block, the third signaling indicating the second RRC information block in the at least one RRC information block; the second RRC information block includes triggering random access; accompanying the reception of the third signaling, it starts a first timer; in response to the successful completion of random access for a cell in the cell group configured for the second RRC information block, it stops the first timer.

[0610] As an example, the expiration of the first timer will not trigger an RRC reconstruction.

[0611] As an example, the at least one RRC information block is used to indicate whether the expiration of the first timer triggers an RRC reconstruction.

[0612] As an example, the first processor 1003, in response to the expiration of the first timer, applies one of the at least one RRC information blocks to start the first timer.

[0613] As an example, the first processor 1003, in response to the expiration of the first timer, reverts to the configuration prior to the application of the first RRC information block.

[0614] As an example, the phrase fallback to the configuration prior to the application of the first RRC information block does not include releasing the signaling radio bearer, discarding the key, or falling back to the previous PDCP state variables for DRB. The phrase fallback to the configuration prior to the application of the first RRC information block includes at least a partial MAC reset.

[0615] As an example, the phrase fallback to the configuration prior to the application of the first RRC information block does not include releasing or rebuilding the RLC entity.

[0616] As an example, the first node is a user equipment (UE).

[0617] As an example, the first node is a terminal that supports large latency differences.

[0618] As an example, the first node is an NTN-enabled terminal.

[0619] As an example, the first node is an aircraft or a ship.

[0620] As an example, the first node is a mobile phone or vehicle terminal.

[0621] As one example, the first node is a relay UE and / or a U2N remote UE.

[0622] As an example, the first node is an Internet of Things (IoT) terminal or an industrial IoT terminal.

[0623] As an example, the first node is a device that supports low-latency, high-reliability transmission.

[0624] As an example, the first node is a secondary link communication node.

[0625] As one embodiment, the first receiver 1001 includes at least one of the following in embodiment 4: antenna 452, receiver 454, receiver processor 456, multi-antenna receiver processor 458, controller / processor 459, memory 460, or data source 467.

[0626] As one embodiment, the first transmitter 1002 includes at least one of the following in embodiment 4: antenna 452, transmitter 454, transmission processor 468, multi-antenna transmission processor 457, controller / processor 459, memory 460, or data source 467.

[0627] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The user equipment, terminal, and UE in this application include, but are not limited to, drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablets, laptops, vehicle-mounted communication equipment, wireless sensors, internet access cards, IoT terminals, RFID terminals, NB-IoT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet access cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablets, satellite communication equipment, ship communication equipment, NTN user equipment, and other wireless communication equipment. The base station or system equipment in this application includes, but is not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR Node B), TRP (Transmitter Receiver Point), NTN base stations, satellite equipment, flight platform equipment, and other wireless communication equipment.

[0628] This invention may be practiced in other specified forms without departing from its core or essential characteristics. Therefore, the embodiments disclosed herein should in any way be considered descriptive rather than restrictive. The scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications within their equivalent meaning and scope are considered to be included therein.

Claims

1. A user equipment used in wireless communication, wherein, include: The receiver receives at least one RRC (Radio Resource Control) information block, each of which is used to configure a cell group; the application of any RRC information block depends on receiving signaling other than the at least one RRC information block. The receiver receives the second signaling; The second signaling is signaling at a protocol layer below the RRC layer; in response to receiving the second signaling, a first RRC information block is applied, the second signaling indicating the first RRC information block in the at least one RRC information block; the application of the first RRC information block does not include random access; along with the reception of the second signaling, a first timer is started; the stopping of the first timer depends on the reception of first information, the first information being generated by a protocol layer below the RRC layer; the reception of the first information is used to determine that the first RRC information block has been successfully applied; The expiration of the first timer is used to determine that the first RRC information block was not successfully applied.

2. The user equipment according to claim 1, characterized in that, include: The transmitter sends the first measurement result, which is the L1 (Layer 1) measurement result; The transmitter sends a first confirmation message, which is used to indicate that the first RRC information block is applied. Specifically, sending the first measurement result is performed before receiving the second signaling; sending the first confirmation information is performed after receiving the second signaling.

3. The user equipment according to claim 1 or 2, characterized in that, include: The receiver receives third signaling, which is signaling at a protocol layer below the RRC layer; In response to receiving the third signaling, a second RRC information block is applied, the third signaling indicating the second RRC information block in the at least one RRC information block; the second RRC information block includes triggering random access; accompanying the receipt of the third signaling, the first timer is started; in response to the successful completion of random access for a cell in the cell group configured for the second RRC information block, the first timer is stopped.

4. The user equipment according to claim 1, characterized in that, The expiration of the first timer will not trigger an RRC rebuild.

5. The user equipment according to claim 1, characterized in that, The at least one RRC information block is used to indicate whether the expiration of the first timer triggers an RRC reconstruction.

6. The user equipment according to claim 1, characterized in that, In response to the expiration of the first timer, the processor starts the first timer by applying one of the at least one RRC information blocks.

7. The user equipment according to claim 1, characterized in that, The processor, in response to the expiration of the first timer, reverts to the configuration prior to the application of the first RRC information block.

8. The user equipment according to claim 7, characterized in that, The fallback to the configuration prior to the application of the first RRC block does not include releasing the signaling radio bearer, discarding the key, or the PDCP (Packet Data Convergence Protocol) state variables used for the DRB (Data Radio Bearer) prior to the fallback. The fallback to the configuration prior to the application of the first RRC block includes at least a partial MAC reset.

9. The user equipment according to claim 7, characterized in that, The fallback to the configuration prior to the application of the first RRC information block does not include releasing or rebuilding the RLC entity.

10. The user equipment according to claim 1, characterized in that, The first information is a physical layer signal.

11. The user equipment according to claim 1, characterized in that, The first piece of information is a signal on the PDCCH (physical downlink control channel).

12. The user equipment according to claim 1, characterized in that, The first information occupies 1 bit.

13. The user equipment according to claim 1, characterized in that, The first message is HARQ (Hybrid Automatic Repeat reQuest ACK).

14. The user equipment according to claim 13, characterized in that, The HARQ ACK is a signal sent to the user equipment.

15. A method used in a user equipment for wireless communication, wherein, include: Receive at least one RRC information block, each of the at least one RRC information block being used to configure a cell group; The application of any one of the at least one RRC information blocks depends on receiving signaling other than the at least one RRC information block; Receive a second signaling; the second signaling is signaling at a protocol layer below the RRC layer; in response to receiving the second signaling, apply a first RRC information block, the second signaling indicating the first RRC information block in the at least one RRC information block; the application of the first RRC information block does not include random access; accompanying the reception of the second signaling, start a first timer; the stopping of the first timer depends on the reception of first information, the first information being generated by a protocol layer below the RRC layer; the reception of the first information is used to determine that the first RRC information block has been successfully applied; The expiration of the first timer is used to determine that the first RRC information block was not successfully applied.

16. The method used in a user equipment for wireless communication according to claim 15, characterized in that, include: Send the first measurement result, which is the L1 (Layer 1) measurement result; Send a first confirmation message, which is used to indicate that the first RRC information block is applied; Specifically, sending the first measurement result is performed before receiving the second signaling; sending the first confirmation information is performed after receiving the second signaling.

17. The method used in a user equipment for wireless communication according to claim 15 or 16, characterized in that, include: Receive third signaling, which is signaling at the protocol layer below the RRC layer; In response to receiving the third signaling, a second RRC information block is applied, the third signaling indicating the second RRC information block in the at least one RRC information block; the second RRC information block includes triggering random access; accompanying the receipt of the third signaling, the first timer is started; in response to the successful completion of random access for a cell in the cell group configured for the second RRC information block, the first timer is stopped.

18. The method for use in a user equipment for wireless communication according to claim 15, characterized in that, The expiration of the first timer will not trigger an RRC rebuild.

19. The method used in a user equipment for wireless communication according to claim 15, characterized in that, The at least one RRC information block is used to indicate whether the expiration of the first timer triggers an RRC reconstruction.

20. The method used in a user equipment for wireless communication according to claim 15, characterized in that, In response to the expiration of the first timer, one of the at least one RRC information blocks is used to start the first timer.

21. The method for use in a user equipment for wireless communication according to claim 15, characterized in that, As a response to the expiration of the first timer, the configuration is rolled back to the state before the first RRC information block was applied.

22. The method for use in a user equipment for wireless communication according to claim 21, characterized in that, The fallback to the configuration prior to the application of the first RRC block does not include releasing the signaling radio bearer, discarding the key, or the PDCP (Packet Data Convergence Protocol) state variables used for the DRB (Data Radio Bearer) prior to the fallback. The fallback to the configuration prior to the application of the first RRC block includes at least a partial MAC reset.

23. The method for use in a user equipment for wireless communication according to claim 21, characterized in that, The fallback to the configuration prior to the application of the first RRC information block does not include releasing or rebuilding the RLC entity.

24. The method for use in a user equipment for wireless communication according to claim 15, characterized in that, The first information is a physical layer signal.

25. The method used in a user equipment for wireless communication according to claim 15, characterized in that, The first piece of information is a signal on the PDCCH (physical downlink control channel).

26. The method used in a user equipment for wireless communication according to claim 15, characterized in that, The first information occupies 1 bit.

27. The method for use in a user equipment for wireless communication according to claim 15, characterized in that, The first message is HARQ (Hybrid Automatic Repeat reQuest ACK).

28. The method for use in a user equipment for wireless communication according to claim 27, characterized in that, The HARQ ACK is a signal sent to the user equipment.

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