Wireless communication method, terminal equipment and network equipment

Abstract

The invention provides a wireless communication method, terminal equipment and network equipment. The method comprises: a terminal device receiving first candidate cell configuration information sent by a network device, the first candidate cell configuration information comprising one or more of the following: a first conditional primary and secondary cell addition / change (CPAC) candidate cell configuration associated with a first conditional switching (CHO) cell configuration, a second CPAC candidate cell configuration, and a second CPAC candidate cell configuration associated with a second CHO cell configuration; and a third CPAC candidate cell configuration associated with a selectively activated SACG of the group of cells. In the embodiments of the present application, by specifying one or more of different storage modes, transmission modes and effective time for a plurality of CPAC candidate cell configurations (e.g., at least two of a first CPAC candidate cell configuration, a second CPAC candidate cell configuration and a third CPAC candidate cell configuration), a terminal device is helped to distinguish the plurality of CPAC candidate cell configurations. And confusion of various CPAC candidate cell configurations is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and more particularly, to a wireless communication method, a terminal device and a network device. BACKGROUND

[0002] In some scenarios, a network device can configure a terminal device with CPAC candidate cell configurations associated with multiple procedures, such as conditional PSCell addition / change (CPAC), conditional handover (CHO) combined with CPAC (denoted as "CHO+CPAC procedure"), and selective activation of cell groups (SACG) procedure.

[0003] For example, the network device configures the terminal device with at least two of CPAC candidate cell configurations associated with the CHO+CPAC procedure (also referred to as "first CPAC candidate cell configuration"), CPAC configurations associated with the CPAC procedure (also referred to as "second CPAC candidate cell configuration"), and CPAC candidate cell configurations associated with the SACG (also referred to as "third CPAC candidate cell configuration"). However, the terminal device cannot distinguish the procedures associated with the obtained CPAC candidate cell configurations, which leads to confusion among the CPAC candidate cell configurations associated with multiple procedures. SUMMARY

[0004] The present application provides a wireless communication method, a terminal device and a network device. The various aspects involved in the present application are introduced as follows.

[0005] In a first aspect, a method of wireless communication is provided, comprising: receiving, by a terminal device, first candidate cell configuration information sent by a network device, wherein the first candidate cell configuration information comprises one or more of: first conditional PSCell addition / change (CPAC) candidate cell configuration associated with a first conditional handover (CHO) cell configuration, second CPAC candidate cell configuration, and third CPAC candidate cell configuration associated with selective activation of cell groups (SACG); wherein at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration are different in storage mode, and / or at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration are different in transmission mode, and / or at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration are different in validity time.

[0006] In a second aspect, a method of wireless communication is provided that includes transmitting, by a network device, first candidate cell configuration information to a terminal device, wherein the first candidate cell configuration information includes one or more of: a first conditional primary secondary cell addition / change, CPAC, candidate cell configuration associated with a first conditional handover, CHO, cell configuration, a second CPAC candidate cell configuration, a third CPAC candidate cell configuration associated with a selective activation of a cell group, SACG. wherein at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration are different in storage, and / or at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration are different in transmission, and / or at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration are different in time of taking effect.

[0007] In a third aspect, a terminal device is provided that includes a receiving unit configured to receive first candidate cell configuration information transmitted by a network device, wherein the first candidate cell configuration information includes one or more of: a first conditional primary secondary cell addition / change, CPAC, candidate cell configuration associated with a first conditional handover, CHO, cell configuration, a second CPAC candidate cell configuration, a third CPAC candidate cell configuration associated with a selective activation of a cell group, SACG. wherein at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration are different in storage, and / or at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration are different in transmission, and / or at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration are different in time of taking effect.

[0008] In a fourth aspect, a network device is provided that includes a transmitting unit configured to transmit first candidate cell configuration information to a terminal device, wherein the first candidate cell configuration information includes one or more of: a first conditional primary secondary cell addition / change, CPAC, candidate cell configuration associated with a first conditional handover, CHO, cell configuration, a second CPAC candidate cell configuration, a third CPAC candidate cell configuration associated with a selective activation of a cell group, SACG. The storage manners of at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration are different; and / or the transmission manners of at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration are different; and / or the effective times of at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration are different.

[0009] In a fifth aspect, a terminal device is provided, which includes a processor, a memory, and a communication interface. The memory is configured to store one or more computer programs. The processor is configured to invoke the computer programs in the memory, so that the terminal device performs part or all of the steps in the method of the first aspect.

[0010] In a sixth aspect, a network device is provided, which includes a processor, a memory, and a transceiver. The memory is configured to store one or more computer programs. The processor is configured to invoke the computer programs in the memory, so that the network device performs part or all of the steps in the method of the second aspect.

[0011] In a seventh aspect, a communication system is provided, which includes the terminal device and / or the network device described above. In another possible design, the system can further include other devices interacting with the terminal device or the network device in the schemes provided by the embodiments of the present application.

[0012] In an eighth aspect, a computer-readable storage medium is provided, which stores a computer program. The computer program causes a communication device (e.g., a terminal device or a network device) to perform part or all of the steps in the methods of the above aspects.

[0013] In a ninth aspect, a computer program product is provided, which includes a non-transitory computer-readable storage medium storing a computer program. The computer program is operable to cause a communication device (e.g., a terminal device or a network device) to perform part or all of the steps in the methods of the above aspects. In some implementations, the computer program product can be a software installation package.

[0014] In a tenth aspect, a chip is provided, which includes a memory and a processor. The processor can invoke and run a computer program from the memory, to implement part or all of the steps described in the methods of the above aspects.

[0015] In this application embodiment, by specifying one or more of the following storage methods, transmission methods, and effective times for multiple CPAC candidate cell configurations (e.g., at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration), it is helpful for the terminal device to distinguish between multiple CPAC candidate cell configurations and avoid confusion between multiple CPAC candidate cell configurations. Attached Figure Description

[0016] Figure 1 This is the wireless communication system 10 used in the embodiments of this application.

[0017] Figure 2 This is a schematic diagram of a conventional switching process applicable to the embodiments of this application.

[0018] Figure 3 This is a schematic flowchart of a wireless communication method according to an embodiment of this application.

[0019] Figure 4 This is a schematic diagram of the configuration stored in the terminal device in an embodiment of this application.

[0020] Figure 5 This is a schematic diagram of a terminal device according to an embodiment of this application.

[0021] Figure 6 This is a schematic diagram of a network device according to an embodiment of this application.

[0022] Figure 7 This is a schematic structural diagram of a communication device according to an embodiment of this application. Detailed Implementation

[0023] The technical solution of this application will now be described with reference to the accompanying drawings. For ease of understanding, the following description will first refer to the accompanying drawings. Figure 1 This paper introduces the communication scenarios to which the embodiments of this application are applicable.

[0024] The method provided in this application can be used in various dual-connectivity (MR-DC) architectures, such as dual connectivity between a 4th generation (4G) communication system and a 5th generation (5G) communication system, dual connectivity between a 5G communication system and a 4G communication system, or dual connectivity between two 5G communication systems, etc.

[0025] The dual connectivity between the aforementioned 4G and 5G communication systems can include: dual connectivity between the evolved universal terrestrial radio access (E-UTRA) system and the new radio (NR) system (E-UTRA-NR dual connectivity, EN-DC), and dual connectivity between the E-UTRA system and the NR system under the 5G core network (NG-RAN E-UTRA-NR dual connectivity, NGEN-DC), etc. EN-DC can also be referred to as option 3 series. EN-DC is based on long-term evolution (LTE) base stations... For example, an eNB acts as the master node (MN) or primary base station, while an NR base station, such as a gNB, acts as the secondary node (SN) or secondary base station's data center (DC). Both the MN and SN can have data plane connections to the evolved packet core (EPC) network, i.e., the 4G core network, providing air interface transmission resources for data between the terminal and the EPC. NG EN-DC can also be called the option 7 series. NG EN-DC uses an LTE base station, such as an ng-eNB, as the MN, and an NR base station, such as a gNB, as the SN. Unlike EN-DC, in NG EN-DC, both the MN and SN are connected to the 5G core network (5GC), providing air interface transmission resources for data between the terminal and the 5GC.

[0026] Dual connectivity between 5G and 4G communication systems can include dual connectivity between NR and E-UTRA systems (NRE-UTRA dual connectivity, NE-DC). NE-DC can also be referred to as option 4 series. NE-DC uses an NR base station, such as a gNB, as the MN and an LTE base station, such as an ng-eNB, as the SN. Both the MN and SN can have data plane connections with the 5GC, providing air interface transmission resources for data between the terminal and the 5GC.

[0027] Dual connectivity between 5G communication systems can include NR systems and NR system data centers (DCs). In the NR system and NR system DC, both MN and SN are NR base stations.

[0028] The following is based on only... Figure 1 Taking the communication system 10 shown as an example, the method provided in the embodiments of this application will be described.

[0029] like Figure 1 The diagram shown is a schematic diagram of the architecture of the communication system 10 provided in an embodiment of this application. Figure 1 In the communication system 10, network device 101, network device 102, network device 105, terminal device 103, and terminal device 104 may be included. Figure 1 This is merely an illustrative diagram and does not constitute a limitation on the applicable scenarios of the technical solutions provided in this application.

[0030] Figure 1 The network devices, namely network device 101, network device 102, or network device 105, can be any device with a wireless transmission and reception process. This includes, but is not limited to: evolved Node Bs (NodeB, eNB, or e-NodeB) in LTE, base stations (gNodeB or gNB) or transmission receiving points / transmission reception points (TRPs) in NR, and subsequent evolutions of 3GPP, etc. Base stations can be: macro base stations, micro base stations, pico base stations, small cells, relay stations, or balloon stations, etc. Multiple base stations can support networks using the same technology mentioned above, or they can support networks using different technologies mentioned above. A base station can contain one or more co-located or non-co-located TRPs. Network devices can also be radio controllers, centralized units (CUs), and / or distributed units (DUs) in cloud radio access network (CRAN) scenarios.

[0031] Figure 1The terminal, namely terminal device 103 or terminal device 104, is a device with wireless transceiver capabilities. It can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as on ships); and it can be deployed in the air (e.g., on airplanes, balloons, and satellites). The terminal can be a mobile phone, tablet computer, computer with wireless transceiver capabilities, virtual reality (VR) terminal device, augmented reality (AR) terminal device, terminal in industrial control, vehicle-mounted terminal device, terminal in self-driving, terminal in assisted driving, terminal in remote medical care, terminal in smart grid, terminal in transportation safety, terminal in smart city, terminal in smart home, etc. The embodiments of this application do not limit the application scenarios. A terminal may also be referred to as terminal equipment, user equipment (UE), access terminal, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal equipment, wireless communication equipment, machine terminal, UE agent, or UE device, etc. A terminal can be fixed or mobile.

[0032] By way of example and not limitation, in this embodiment, the terminal can be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also enable powerful processes through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those with comprehensive processes, large size, and the ability to achieve complete or partial processes without relying on a smartphone, such as smartwatches or smart glasses, as well as those focused on a specific type of application process that require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0033] For ease of understanding, the communication process involved in the embodiments of this application is described below.

[0034] Legacy handover procedure Similar to LTE systems, NR systems support handover processes for terminal devices in a connected state. When a terminal device using network services moves from one cell to another, or due to adjustments in radio transmission load, activation maintenance, equipment failure, or other reasons, in order to ensure communication continuity and service quality, the network device must switch the communication link between the terminal device and the source cell (also known as the "source base station") to a new cell (also known as the "target cell or target base station"), i.e., perform a handover process.

[0035] For ease of understanding, the following text will combine... Figure 2 This describes the traditional switching process. See also... Figure 2 As shown, Figure 2 The method shown includes steps S210 to S260.

[0036] In step S210, the source network device triggers handover based on the L3 measurement results reported by the terminal device and sends a handover request (HANDOVER REQUEST) to the target network device where the target cell is located via the Xn interface.

[0037] In step S220, in response to the handover request, the target network device performs admission control.

[0038] In step S230, the target network device sends a handover request acknowledgment message to the source network device.

[0039] In some implementations, the handover request confirmation may include the RRC configuration of the target cell.

[0040] In step S240, the source network device sends an RRC Reconfiguration message to the terminal device, instructing the terminal device to initiate a handover process.

[0041] In some implementations, the RRC reconfiguration message includes RRC configuration information for accessing the target cell.

[0042] In step S250, the terminal device accesses the target cell.

[0043] In step S260, the terminal device sends an RRC Reconfiguration Complete message to the target network device.

[0044] In some implementations, the main behaviors of each protocol layer after the terminal device receives the handover command can be seen in Table 1. For the Packet Data Convergence Protocol (PDCP) layer, if the terminal device rebuilds based on the handover command, the terminal device needs to perform a security update; conversely, if the terminal device restores data at the PDCP layer based on the handover command, the terminal device does not need to perform a security update.

[0045] For the radio link control (RLC) layer, if the terminal device rebuilds based on a handover command, the terminal device may or may not need to perform a security update.

[0046] For the media access control (MAC) layer, if the terminal device is rebuilt based on the handover command, the terminal device may or may not need to perform a security update.

[0047] Table 1

[0048] It should be noted that the content of the security update described above is not specifically limited in this embodiment. For example, a security update may include updating the key. Another example is that a security update may include updating the encryption algorithm. Yet another example is that a security update may include updating the integrity protection algorithm.

[0049] Furthermore, in this embodiment, the content of the aforementioned security update can be indicated via an RRC reconfiguration message. Of course, the content of the aforementioned security update can also be indicated in other ways, and this embodiment does not limit this approach.

[0050] It should also be noted that, in this embodiment, the operation of the protocol layer can be determined through RRC reconfiguration messages. For example, the RRC reconfiguration message can be used to determine whether to perform PDCP reconstruction. Another example is that the RRC reconfiguration message can be used to determine whether to perform PDCP layer data recovery. Yet another example is that the RRC reconfiguration message can be used to determine whether to perform RLC reconstruction. Of course, in this embodiment, the operation of the protocol layer can also be indicated through other means.

[0051] It should also be noted that, in this embodiment, the PDCP layer can be responsible for data-related security operations. For example, the PDCP layer can perform one or more of the following on the data: AS layer encryption, AS layer decryption, and integrity protection. Of course, in this embodiment, the PDCP layer can also perform other operations.

[0052] Conditional PSCell addition / change (CPAC) procedure For ease of understanding, the following text will combine... Figure 1 Introduce the CPAC process. Figure 1 In this configuration, terminal device 103 or terminal device 104 can be dual-connected to network devices 101 and 102, where one network device is MN and the other is SN. One or more serving cells in MN belong to a master cell group (MCG). Typically, an MCG can include a primary cell (PCell). In some implementations, an MCG may include one or more secondary cells (SCells) in addition to PCells. One or more serving cells in SN belong to a secondary cell group (SCG). Typically, an SCG can include primary and secondary cells (PSCells). In some implementations, an SCG may include one or more SCells in addition to PSCells.

[0053] exist Figure 1 In the communication system 10 shown, terminal device 103 or terminal device 104 can perform CPAC. For example, terminal device 103 can perform conditional primary and secondary cell addition (CPA) through Example 1 below, and conditional primary and secondary cell change (CPC) through Example 2 below.

[0054] Example 1: Taking a terminal device 103 and network device 101 that have established an RRC connection, and the terminal device 103 needs to perform CPA and establish a connection with network device 102 as an example, after establishing the RRC connection, network device 101 can configure one or more candidate PSCells for the terminal device 103. These candidate PSCells include PSCells configured by network device 102 for the terminal device 103 and PSCells configured by other network devices for the terminal device 103. Network device 101 sends configuration information 1 of the one or more candidate PSCells to the terminal device 103. The configuration information 1 of the candidate PSCells includes the configuration 1 of the candidate PSCell and the addition conditions. Upon receiving the configuration information 1 of the one or more candidate PSCells from network device 101, the terminal device 103 can detect the addition conditions of the one or more candidate PSCells. When at least one candidate PSCell that meets the addition conditions is detected, the terminal device 103 selects one of the candidate PSCells (such as the candidate PSCell configured by network device 102 for the terminal) and applies the configuration of that candidate PSCell. Subsequently, terminal device 103 initiates random access with the candidate PSCell, and after successful random access with the candidate PSCell, establishes dual connections with network device 101 and network device 102. The configuration information 1 of the candidate PSCell can also be referred to as the CPA configuration information 1 of the candidate PSCell; the name of this configuration information is not limited in this embodiment.

[0055] Understandably, when terminal device 103 detects multiple candidate PSCells that meet the addition conditions, it can select one candidate PSCell according to a preset strategy and apply its configuration. For example, when terminal device 103 detects multiple candidate PSCells that meet the addition conditions, it can randomly select one and apply its configuration; or, it can select the candidate PSCell with the best signal quality from among the multiple candidate PSCells that meet the addition conditions and apply its configuration; or, it can select the candidate PSCell with the most beams from among the multiple candidate PSCells that meet the addition conditions and have a beam count greater than or equal to a threshold value and apply its configuration. The above are just examples of terminal device 103 selecting candidate PSCells; terminal device 103 can also select candidate PSCells in other ways without limitation.

[0056] Example 2 illustrates a scenario where terminal device 103 is dual-connected with network devices 101 and 102, where network device 101 is the MN and network device 102 is the SN. Taking a CPC (Cyclic Access Point) scenario where terminal device 103 needs to perform a CPC, network device 101 can configure one or more candidate PSCells for terminal device 103. Network device 101 sends configuration information 2 of these candidate PSCells to terminal device 103. This configuration information 2 includes the candidate PSCell's configuration and modification conditions. Upon receiving the configuration information 2 from network device 101, terminal device 103 can detect the modification conditions of these candidate PSCells. When at least one candidate PSCell that meets the modification conditions is detected, terminal device 103 selects one of the candidate PSCells and applies its configuration. Subsequently, terminal device 103 initiates random access with the candidate PSCell, and after successful random access, establishes dual connections with network device 101 and the secondary base station to which the candidate PSCell belongs. The configuration information 2 of the candidate PSCell can also be called the CPC configuration information 2 of the candidate PSCell, without restriction.

[0057] Understandably, when terminal device 103 detects multiple candidate PSCells that meet the change conditions, it can select one candidate PSCell according to a preset strategy and apply its configuration. For example, when terminal device 103 detects multiple candidate PSCells that meet the change conditions, it can randomly select one and apply its configuration; or, it can select the candidate PSCell with the best signal quality from among the multiple candidate PSCells that meet the change conditions and apply its configuration; or, it can select the candidate PSCell with the most beams from among the multiple candidate PSCells that meet the change conditions and have a beam count greater than or equal to a threshold value and apply its configuration. The above are just examples of terminal device 103 selecting candidate PSCells; terminal device 103 can also select candidate PSCells in other ways without limitation.

[0058] It should be noted that, in this embodiment of the application, for any candidate PSCell among one or more candidate PSCells configured for a terminal by any network device, the configuration information 1 of the candidate PSCell when the terminal performs CPA, and the configuration information 2 of the candidate PSCell when the terminal performs CPC, can be collectively referred to as the configuration information of the candidate PSCell. The configuration information of the candidate PSCell includes the configuration of the candidate PSCell and the conditions for adding / changing it. Specifically, when the terminal performs CPA, the configuration of the candidate PSCell is used by the terminal to communicate with the candidate PSCell after adding it. The conditions for adding / changing the candidate PSCell include the conditions for adding the candidate PSCell, which are used by the terminal to determine whether to add the candidate PSCell. When the terminal performs CPC, the configuration of the candidate PSCell is used by the terminal to communicate with the candidate PSCell after changing the source PSCell to the candidate PSCell. The conditions for adding / changing the candidate PSCell include the conditions for changing the candidate PSCell. The conditions for changing the candidate PSCell are used by the terminal to determine whether to change the source PSCell to the candidate PSCell.

[0059] When terminal device 103 receives the configuration and add / change conditions of one or more candidate PSCells, but has not yet detected a PSCell that meets the add / change conditions, terminal device 103 can switch from the current MN to a target MN with better signal quality. For example, terminal device 103 can switch from network device 101 to network device 105. Typically, after terminal device 103 performs an MN handover, the current MN will release one or more candidate PSCells configured for terminal device 103. After the target MN establishes an RRC connection with terminal device 103, it can reconfigure one or more candidate PSCells for terminal device 103 and send the configuration information of one or more candidate PSCells configured by the target MN for the terminal to perform CPAC. The configuration information of one or more candidate PSCells configured by the target MN for the terminal includes the configuration and add / change conditions of the candidate PSCell.

[0060] Typically, the configuration and addition / modification conditions of a candidate PSCell include a considerable amount of information. For example, the configuration of a candidate PSCell may include: the candidate PSCell's configuration identifier, and / or, the random access resources allocated to the terminal by the candidate PSCell, and / or, the cell radio network temporary identifier (CRNIT), and / or, the candidate PSCell's cell global identification (CGI), and / or, the candidate PSCell's physical cell identifier (PCI), and / or, the frequency information corresponding to the candidate PSCell. The frequency information corresponding to the candidate PSCell may include one or more of the following: the absolute frequency of the synchronization signal block (e.g., absoluteFrequency SSB), the absolute frequency location of the reference resource module (common RB0) (e.g., absoluteFrequencyPointA), a frequency bandwidth list (e.g., frequencyBandList), and a subcarrier spacing (SCS) specific carrier list (e.g., scs-SpecificCarrierList), etc. The configuration of a candidate PSCell also includes resource information corresponding to the candidate PSCell. This resource information includes one or more of the following: radioBearerConfig parameters, cellGroupConfig parameters, physical layer (PHY layer) configuration parameters, media access control (MAC) layer configuration parameters, radio link control (RLC) layer configuration parameters, packet data convergence protocol (PDCP) layer configuration parameters, service data adaptation protocol (SDAP) layer configuration parameters, or RRC layer configuration parameters. The configuration of a candidate PSCell can also be referred to as the CPAC configuration of the candidate PSCell, CPAC configuration information of the candidate PSCell, etc. This application embodiment does not specifically limit the name of the above configuration.

[0061] The conditions for adding / changing a candidate PSCell are used by the terminal to determine whether to add the candidate PSCell or to change the source PSCell to the candidate PSCell. For example, if the terminal detects that a candidate PSCell meets the conditions for adding / changing it, the terminal determines to add the candidate PSCell or change the source PSCell to the candidate PSCell. If the terminal detects that a candidate PSCell does not meet the conditions for adding / changing it, the terminal determines not to add the candidate PSCell or not to change the source PSCell to the candidate PSCell.

[0062] Optionally, the conditions for adding / changing a candidate PSCell include the execution event type for that condition. This execution event type can also be called a measurement event or a reporting event, etc. The terminal can measure the signal quality of the candidate PSCell, or measure the signal quality of the candidate PSCell and the signal quality of its neighboring cells, and determine whether to add the candidate PSCell or change the source PSCell to the candidate PSCell based on the measurement results and the execution event type.

[0063] Typically, before the terminal device executes the CPAC process described above, the network device provides CPAC configuration to the terminal device. Accordingly, the terminal device changes the PSCell based on the CPAC configuration provided by the network device. In some implementations, the network device can determine whether the terminal device needs CPAC based on service conditions (e.g., transmission latency, amount of data to be transmitted, etc.) and channel measurements (e.g., channel state).

[0064] In some implementations, the CPAC configuration described above may include a candidate cell configuration list, execution conditions, and cell configuration.

[0065] The aforementioned candidate cell list can be understood as a candidate cell configuration list used for CPA or CPC. This candidate cell list can contain cell information for one or more candidate cells. Each candidate cell's cell information can include a configuration information identifier. It should be noted that the configuration information ID can be determined based on the number of candidate cells configured by the network device for the terminal device. For example, if the network device provides 5 candidate cell configurations for the terminal device, then the aforementioned cell configuration information ID can be used to identify the 5 candidate cell configurations.

[0066] The aforementioned execution conditions may be execution conditions used to instruct the terminal device to perform CPA or CPC.

[0067] The aforementioned cell configuration can be provided to the MN by the candidate SN as the SCG configuration. In some implementations, the aforementioned SCG configuration can be sent by the SN to the MN via the Xn interface, and correspondingly, the MN transparently transmits it to the terminal device. In one implementation, the aforementioned SCG configuration can include the configuration of the candidate SCG, wherein the configuration of the candidate SCG can include cell ID, radio bearer configuration, logical channel configuration, RLC configuration, MAC configuration, physical layer configuration, and SCell configuration.

[0068] It should be noted that, as described above, an SCG can contain one or more SCells, and correspondingly, the above SCG configuration can contain one or more SCell configurations. This application embodiment does not limit this.

[0069] Conditional handover (CHO) combined with CPAC procedure Currently, some communication protocols (e.g., R17) support carrying SCG configuration information in CHO cell configurations to enable terminal devices to quickly establish dual links. However, since CHO cells are pre-configured, improper SCG cell configuration may lead to SCG addition failures. Therefore, some other communication protocols (e.g., R10) introduce a mechanism combining CHO and CPAC, also known as the "CHO+CPAC process." This means that a CHO cell can be associated with at least one CPAC cell. In this way, terminal devices can select the appropriate SCG based on conditions and perform the addition, helping to improve the situation where SCG cell configuration is inappropriate.

[0070] Selective activation of cell groups (SACG) procedure Currently, some communication protocols (e.g., R16 and R17) have introduced the CPAC mechanism, which allows network devices to configure at least one candidate cell and associated condition information for a terminal device (hereinafter referred to as "CAPC configuration"). Accordingly, after receiving the configuration, the terminal device can continuously evaluate the configured candidate cells. If at least one candidate cell meets the conditions, the terminal device triggers the CPAC process. After completing the CPAC process, the terminal device can release all candidate cell configurations provided by the network device.

[0071] This means that network devices need to configure the CPAC configuration for the terminal device before each CAPC procedure, significantly increasing the overhead of transmitting the CPAC configuration. In some cases, the CPAC configuration can be reused. Therefore, to avoid frequent CPAC configuration reconfiguration by network devices, some communication protocols (e.g., R10) have enhanced the CPAC procedure. After completing a CPA or CPC procedure, the terminal device can retain the candidate cell configuration (i.e., the CPAC configuration) and continue evaluating candidate cells for the next CPAC procedure. Therefore, the aforementioned SACG can also be called a "continuous CAPC procedure."

[0072] CHO re-establishment enhancement In some communication protocols (e.g., R16), a CHO handover procedure has been introduced to improve handover robustness. Accordingly, network devices pre-configure multiple candidate cell configurations and condition information for terminal devices. The terminal devices can then evaluate candidate cells based on this condition information. If the handover conditions are met, the terminal devices execute the handover procedure based on the candidate cell configurations.

[0073] In some cases, if a CHO handover fails, the terminal device can trigger a connection re-establishment process. During the re-establishment process, the terminal device can first perform cell reselection. Once the terminal device selects a candidate CHO cell, it can then perform the CHO process again.

[0074] In some implementations, the description of the above CHO reconstruction enhancement in the communication protocol can be found below: 1> If "attemptcondreconfig" is configured; and 1> If the selected cell is not configured with event "CondEventT1", or the selected cell is configured with event "CondEventT1" but the remaining conditions are not met; and 1> If the selected cell is one of the candidate cells corresponding to "reconfigurationWithSync" in the primary cell group of the MCG variable "VarConditionalReconfig": 2> If the terminal device supports conditional handover via RLF-reporting, the CHO cell identifier in the variable “VarRLF-Report” will be set to the global cell identifier. If available, the physical cell identifier and the carrier frequency of the selected cell will be used. 2> Apply the stored condRRCReconfig associated with the selected cell and perform the operations specified in section 5.3.5.3.

[0075] As mentioned earlier, in some scenarios, network devices may configure CPAC candidate cells associated with multiple processes as described above for terminal devices. For example, at least two of the following: CPAC candidate cell configuration associated with the CHO+CPAC process (also known as "first CPAC candidate cell configuration"), CPAC configuration associated with the CPAC process (also known as "second CPAC candidate cell configuration"), and CPAC candidate cell configuration associated with SACG (also known as "third CPAC candidate cell configuration"). Terminal devices cannot distinguish the process associated with the acquired CPAC candidate cell configuration, which makes it easy to confuse the CPAC candidate cell configurations associated with multiple processes.

[0076] Therefore, embodiments of this application provide a wireless communication method to distinguish the CPAC candidate cell configurations associated with the above-described processes. For ease of understanding, the following description is in conjunction with... Figure 3 This application describes a wireless communication method according to an embodiment. Figure 3 The method shown includes step S310.

[0077] In step S310, the network device sends the first candidate cell configuration information to the terminal device.

[0078] In some implementations, the aforementioned first candidate cell configuration information includes one or more of the following: a first CPAC candidate cell configuration associated with the first CHO cell configuration, a second CPAC candidate cell configuration, and a third CPAC candidate cell configuration associated with the SACG. For ease of description below, at least two of the first, second, and third CPAC candidate cell configurations are collectively referred to as "multiple CPAC candidate cell configurations".

[0079] In this embodiment of the application, the name of the above-mentioned CPAC candidate cell configuration is not specifically limited. For example, the above-mentioned CPAC candidate cell configuration may also be called SCG configuration, candidate cell configuration, etc.

[0080] In this embodiment, the configuration information of the first candidate cell can be one or more of the following: full configuration, reference configuration, and incremental configuration. The reference configuration can be, for example, the configuration provided by the network device for the terminal device. Alternatively, the reference configuration can be a set of configurations that the terminal device independently retains and serves from the network device; this embodiment does not limit this specific configuration.

[0081] In some implementations, the terminal device can determine the candidate cell configuration based on a reference configuration and incremental configuration. Of course, the terminal device can also use other methods to determine the candidate cell configuration.

[0082] To facilitate the differentiation of the various CPAC candidate cell configurations, this application embodiment specifies the storage method, transmission method, and effective time of the CPAC candidate cell configuration, which helps the terminal device to distinguish between the various CPAC candidate cell configurations. The following descriptions are based on implementation methods 1 to 3.

[0083] It should be noted that implementation methods 1 to 3 of this application can be used in combination or individually, and this application does not limit this.

[0084] Furthermore, it should be noted that other methods can also be used to distinguish between various CPAC candidate cell configurations in the embodiments of this application. For example, the implementation of the terminal device can be used to distinguish between various CPAC candidate cell configurations. As another example, the implementation of the network device can help the terminal device distinguish between various CPAC candidate cell configurations. The embodiments of this application do not limit this approach.

[0085] In implementation method 1, at least two of the multiple CPAC candidate cell configurations use different transmission methods. Accordingly, the terminal device can distinguish between the multiple CPAC candidate cell configurations based on these different transmission methods.

[0086] Alternatively, at least two transmission methods in the first, second, and third CPAC candidate cell configurations are different. For example, the transmission methods of the first and second CPAC candidate cell configurations are different. Or, the transmission methods of the second and third CPAC candidate cell configurations are different. Of course, in the embodiments of this application, the transmission methods of the first, second, and third CPAC candidate cell configurations can all be different.

[0087] In some implementations, the different transmission methods described above can be understood as using different information to transmit various CPAC candidate cell configurations. Accordingly, the terminal device can distinguish between various CPAC candidate cell configurations based on different information.

[0088] Assume that the information transmitted for the configuration of the first CPAC candidate cell is the first information, the information transmitted for the configuration of the second CPAC candidate cell is the second information, and the information transmitted for the configuration of the third CPAC candidate cell is the third information. Then, the different transmission methods described above can be understood as at least two of the first, second, and third information being different types of information.

[0089] It should be noted that, in the embodiments of this application, the first information, the second information, and the third information can be understood as independently transmitted information. For example, the first information, the second information, and the third information can correspond to different signaling.

[0090] In other implementations, the different transmission methods described above may include transmitting different Information Elements (IEs) for the information used to transmit various CPAC candidate cell configurations. Accordingly, the terminal device can distinguish between various CPAC candidate cell configurations based on different IEs (e.g., the names of the IEs).

[0091] Assume that the information transmitted for the configuration of the first CPAC candidate cell is the first information, the information transmitted for the configuration of the second CPAC candidate cell is the second information, and the information transmitted for the configuration of the third CPAC candidate cell is the third information. Then, the different transmission methods described above can be understood as at least two of the first, second, and third information being different Information Interfaces (IEs).

[0092] It should be noted that, in the embodiments of this application, the IEs used to carry multiple CPAC candidate cell configurations can be different IEs in the same signaling. Of course, the IEs used to carry multiple CPAC candidate cell configurations can be different IEs in different signaling.

[0093] In other implementations, the different transmission methods mentioned above may include different information nesting methods corresponding to the transmission of information on various CPAC candidate cell configurations.

[0094] For example, the first CPAC candidate cell configuration can be nested with the first CHO cell configuration; that is, the first CHO cell configuration can be nested within the first CPAC candidate cell configuration. Correspondingly, the second CPAC candidate cell configuration can be delivered without nesting. Thus, when the terminal device determines that the CPAC candidate cell configuration is nested within the first CHO cell configuration, the terminal device can determine that this CPAC candidate cell configuration is the first CPAC candidate cell configuration, i.e., associated with the CHO+CPAC process. When the terminal device receives a CPAC candidate cell configuration transmitted without nesting, the terminal device can determine that this CPAC candidate cell configuration is the second CPAC candidate cell configuration.

[0095] It should be noted that, in the embodiments of this application, the configuration of the first CPAC candidate cell can be issued in a nested manner with the configuration of the first CHO cell. Of course, the configuration of the first CPAC candidate cell can also be issued in parallel with the configuration of the first CHO cell. For example, the configuration of the CHO+CPAC process can include the configuration of the first CPAC candidate cell and the configuration of the first CHO cell.

[0096] In other implementations, the aforementioned transmission methods may include a process associated with indicating the CPAC candidate cell configuration via indication information. Alternatively, the indication information may indicate that the CPAC candidate cell configuration is one of several CPAC candidate cell configurations.

[0097] For example, the first candidate cell configuration information carries first indication information, which is used to indicate that the first candidate cell configuration information is one of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration.

[0098] It should be noted that, in the embodiments of this application, the above-mentioned indication information can be transmitted simultaneously with the CPAC candidate cell configuration. For example, the first indication information can be transmitted simultaneously with the first CPAC candidate cell configuration. Of course, in the embodiments of this application, the indication information can be transmitted separately from the CPAC candidate cell configuration.

[0099] Furthermore, in this embodiment, the configuration granularity of the aforementioned indication information is not limited. In some implementations, the configuration granularity of the indication information is uniformly configured for the candidate cell list. In this case, it can be understood that the indication information indicates the process corresponding to the CPAC candidate cell configuration associated with the entire candidate cell list. In other implementations, the configuration granularity of the indication information can be for a set of candidate cells in the candidate cell list. For example, candidate cells in the first candidate cell set can be associated with the CHO+CPAC process, candidate cells in the second candidate cell set can be associated with the CPAC process, and candidate cells in the third candidate cell set can be associated with the SACG process. Correspondingly, the configuration granularity of the indication information can be the set of candidate cells. That is, the first candidate cell set corresponds to indication information 1 applied to the CHO+CPAC process, the second candidate cell set corresponds to indication information 2 applied to the CPAC process, and the third candidate cell set corresponds to indication information 3 applied to the SACG process. Of course, in this embodiment, the configuration granularity of the indication information can also be configured individually for each candidate cell.

[0100] In implementation method 2, the various CPAC candidate cell configurations take effect at different times, or in other words, the various CPAC candidate cell configurations do not take effect simultaneously. Accordingly, since only one of the aforementioned CPAC candidate cell configurations takes effect within a certain period of time, the terminal device does not need to distinguish between the various CPAC candidate cell configurations.

[0101] Alternatively, at least two of the first, second, and third CPAC candidate cell configurations may have different effective times. For example, the effective time of the first CPAC candidate cell configuration may differ from that of the second CPAC candidate cell configuration. Or, for example, the effective time of the second CPAC candidate cell configuration may differ from that of the third CPAC candidate cell configuration. Of course, in the embodiments of this application, the effective times of the first, second, and third CPAC candidate cell configurations may all be different.

[0102] Alternatively, the processes associated with multiple CPAC candidate cell configurations may not take effect simultaneously. In other words, at least two of the SACG, CAPC, and CHO+CPAC processes may not be effective at the same time. Alternatively, a terminal device may not support the simultaneous configuration of more than one process. Alternatively, network devices may not configure at least two processes for a terminal device simultaneously.

[0103] For example, if the CAPC process and the SACG process are not configured simultaneously, then the configuration of the second CAPC candidate cell and the configuration of the third CAPC candidate cell will not take effect at the same time.

[0104] For example, if the terminal device is configured with the SACG procedure, then the CHO cell configuration cannot include the first CAPC candidate cell configuration, that is to say, the terminal device does not support the CHO+CPAC procedure.

[0105] For example, if the terminal device is configured with the CAPC procedure, then the CHO cell configuration cannot include the first CAPC candidate cell configuration, that is to say, the terminal device does not support the CHO+CPAC procedure.

[0106] In some implementations, at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration can be defined to not be active simultaneously through predefinition (e.g., protocol predefinition).

[0107] Of course, in this embodiment, the network device may also configure at least two of the above processes for the terminal device simultaneously, or in other words, the at least two processes may be effective simultaneously. However, each process may not involve the same candidate cell; that is, a candidate cell can only support one process. For example, the terminal device may be configured with a first CPAC candidate cell configuration and a third CPAC candidate cell configuration simultaneously. The first CPAC candidate cell configuration may be associated with CPAC candidate cell 1, and the third CPAC candidate cell configuration may be associated with CPAC candidate cell 2. CPAC candidate cell 1 and CPAC candidate cell 2 are different.

[0108] In implementation method 3, at least two of the multiple CPAC candidate cell configurations are stored in different ways. Accordingly, the terminal device can distinguish between multiple CPAC candidate cell configurations based on the different storage methods.

[0109] Alternatively, at least two of the storage methods for the first, second, and third CPAC candidate cell configurations are different. For example, the storage method for the first CPAC candidate cell configuration is different from that for the second CPAC candidate cell configuration. Or, for example, the storage method for the second CPAC candidate cell configuration is different from that for the third CPAC candidate cell configuration. Or, for example, the storage method for the first and third CPAC candidate cell configurations are different. Of course, in the embodiments of this application, the storage methods for the first, second, and third CPAC candidate cell configurations can all be different.

[0110] In some implementations, the above storage methods may vary and include storing multiple CPAC candidate cell configurations in different variables. These different variables may, for example, correspond to different variable names.

[0111] Assume that the stored variable corresponding to the configuration of the first CPAC candidate cell is the first variable, the stored variable corresponding to the configuration of the second CPAC candidate cell is the second variable, and the stored variable corresponding to the configuration of the third CPAC candidate cell is the third variable. Accordingly, at least two of the first, second, and third variables are different variables.

[0112] For example, the terminal device receives CPAC configuration information, which is associated with the CAPC process. Accordingly, the terminal device stores the candidate cell configuration (i.e., the second CAPC candidate cell configuration) from the CPAC configuration information in a second variable (using "..."). VarConditionalReconfig (This is a punctuation mark)

[0113] If the terminal device supports both CHO+CPAC procedures, when the terminal device receives the CPAC configuration associated with the CHO+CPAC procedure, it will also store the CPAC candidate cell configuration (i.e., the first CAPC candidate cell configuration) in the first variable.

[0114] If the terminal device also supports the SACG process, after receiving the SACG configuration, the terminal device can store the CPAC candidate cell configuration (i.e., the third CAPC candidate cell configuration) in the SACG configuration into the third variable.

[0115] In some other implementations, at least two of the first, second, and third variables mentioned above are different partitions of the same variable.

[0116] For example, the second variable used to store the configuration of the second CAPC candidate cell can be represented as "SCG". VarConditionalReconfig The third variable used to store the configuration of the third CAPC candidate cell can be represented as "SACG". VarConditionalReconfig In this context, the second and third variables can be understood as variables. VarConditionalReconfig The two categories in "".

[0117] The preceding text describes the scheme for the terminal device to distinguish between multiple CPAC candidate cell configurations in the embodiments of this application. The following text describes the storage conditions, or rather, the storage method, for the first CPAC candidate cell configuration in the embodiments of this application.

[0118] Furthermore, in this embodiment, the storage conditions for the first CPAC candidate cell configuration can be used in combination with the above-described scheme for distinguishing multiple CPAC candidate cell configurations. Of course, the storage conditions for the first CPAC candidate cell configuration can also be used independently of the above-described scheme for distinguishing multiple CPAC candidate cell configurations.

[0119] For the configuration of the first CPAC candidate cell, in some implementations, the above storage conditions may include the terminal device determining the first CHO cell associated with the first CHO cell configuration based on conditional handover.

[0120] That is, if the first candidate cell configuration information includes the first CPAC candidate cell configuration, the above method further includes: if the terminal device determines the first CHO cell based on conditional handover (e.g., handover conditions in the first CHO cell configuration), then the first terminal device stores the first CPAC candidate cell configuration in the first variable.

[0121] In other implementations, the aforementioned storage conditions may further include the terminal device determining the first CHO cell based on conditional handover, and the terminal device using the first CHO cell configuration. Of course, in this embodiment, the aforementioned storage conditions may also include the terminal device successfully executing CHO based on the first CHO cell configuration. Of course, in this embodiment, when the terminal device receives the CHO+CPAC configuration, it can immediately store the first CHO cell configuration and the first CPAC candidate cell configuration from the CHO+CPAC configuration.

[0122] It should be noted that, in the embodiments of this application, the use of the first CHO cell configuration by the terminal device is not specifically limited. For example, the terminal device may use the first CHO cell configuration when the conditions of the first CHO cell are met; or, for example, the terminal device may use the first CHO cell configuration when it needs to use the candidate cell configuration of the first CHO cell; or, for example, the terminal device may use the first CHO cell configuration when performing a reconfiguration process.

[0123] As described above, in some scenarios, the first CPAC candidate cell configuration can be nested within the first CHO cell configuration. Accordingly, when storing the first CPAC candidate cell configuration, the terminal device can first store the first CHO cell configuration in an associated variable (e.g., the first variable is named "..."). VarConditionalReconfig In the first variable, the configuration of the first CPAC candidate cell is stored in the first variable. Of course, in this embodiment, the configuration of the first CPAC candidate cell is not nested in the configuration of the first CHO cell. In this case, the terminal device can also store the configuration of the first CHO cell and the configuration of the first CPAC candidate cell in different variables at the same time. This embodiment does not limit this.

[0124] For ease of understanding, the following examples 1-3 illustrate the combination of storage conditions and storage methods in the embodiments of this application. It should be noted that examples 1-3 are used as examples of the first CHO cell configuration including the first CPAC candidate cell configuration. Examples 1-3 can also be applied to scenarios where the first CHO cell configuration and the first CPAC candidate cell configuration are transmitted in a non-nested manner, and the embodiments of this application do not limit this.

[0125] Example 1: Assuming the terminal device supports the CHO+CPAC procedure, the network device can send the first CHO cell configuration to the terminal device, and the first CHO cell configuration includes the first CPAC candidate cell configuration. Accordingly, the terminal device can store the first CHO cell configuration in the variable "". VarConditionalReconfig If the terminal device determines the first CHO cell based on conditions and applies the first CHO cell configuration information, the terminal device can write the first CPAC candidate cell configuration nested in the first CHO cell configuration into the first variable.

[0126] Example 2: Assuming the terminal device supports the CHO+CPAC procedure, the network device can send a first CHO cell configuration to the terminal device, and the first CHO cell configuration includes a first CPAC candidate cell configuration. If the CHO is successful, the terminal device can apply the conditions in the first CHO cell configuration to perform reconfiguration, and store the first CPAC candidate cell configuration carried in the first CHO cell configuration into the variable "use" used to store SCG. VarConditionalReconfig for SCG It means "in".

[0127] Example 3: Assuming the terminal device supports the CHO+CPAC procedure, the network device can send a first CHO cell configuration to the terminal device, and the first CHO cell configuration includes a first CPAC candidate cell configuration. If the CHO execution conditions of the first CHO cell are met, the terminal device can store the first CPAC candidate cell configuration carried in the first CHO cell configuration into the variable "use" used to store SCG. VarConditionalReconfig for SCG It means "in".

[0128] The storage conditions for the first CPAC candidate cell configuration were introduced above. The release conditions for various CPAC candidate cell configurations in this application embodiment are described below. For ease of understanding, the following descriptions of various CPAC candidate cell configurations are presented in conjunction with scenarios 1 to 3.

[0129] Scenario 1: Release conditions configured for the first CPAC candidate cell.

[0130] According to the existing protocol, if the terminal device successfully executes the CHO, the terminal device will release all conditional reconfiguration variables, including the variable " MCG VarConditionalReconfig "MCG configuration and variables stored in " SCG VarConditionalReconfig "Stored SCG configuration. In other words, the CPAC configuration associated with the CHO cell will also be released. However, at this time, the terminal device often still needs to continue to perform SCG condition evaluation. If the CPAC configuration associated with the CHO cell is released, the terminal device will not be able to add or change SCGs based on the CPAC configuration."

[0131] Therefore, in this embodiment of the application, if the terminal device accesses the first CHO cell, the terminal device releases the cell configurations other than the first CPAC candidate cell configuration.

[0132] In some implementations, the terminal device's access to the first CHO cell may include, for example, after the terminal device successfully accesses the first CHO cell.

[0133] It should be noted that, in this embodiment, other cell configurations may include one or more of the following: first CHO cell configuration (e.g., configuration associated with MCG), second CPAC candidate cell configuration, and third CPAC candidate cell configuration. Of course, in this embodiment, other cell configurations may also include candidate cell configurations that have already been executed / applied.

[0134] For ease of understanding, the following uses the synchronization reconfiguration (referred to as "reconfigurationWithSync") included in the first CPAC candidate cell configuration as an example, and combines the description method of the communication protocol to introduce the release conditions of the first CPAC candidate cell configuration in this application embodiment.

[0135] 1> If reconfigurationWithSync is included in the variable "spCellConfig" of MCG or SCG, and the random access procedure triggered by the MAC of the NR cell group is successfully completed; 2> If the `reconfigurationWithSync` variable in `spCellConfig` of the MCG is not configured by the CHO+CPAC procedure; 2> If reconfigurationWithSync is included in spCellConfig of SCG, and CPA or CPC is not configured by the CHO+CPAC procedure: 3> Remove items included in MCG and SCG VarConditionalReconfig Other configurations besides the CHO+CPAC process configuration, if any; 3> Based on the description in TS 36.331

[10] , Clause 5.3.5.9.6, delete the variable " VarConditionalReconfiguration The configuration stored in "" if any; In other scenarios, when the terminal device successfully executes a CHO for the first CHO cell, it can also release / delete the first CPAC candidate cell configuration. For example, after the terminal device completes the CHO and CPAC process associated with the first CPAC candidate cell configuration, it may no longer need to use the first CPAC candidate cell configuration. Therefore, the terminal device can release / delete the first CPAC candidate cell configuration to save storage space. Another example is when the terminal device releases / deletes the SCG associated with the first CPAC candidate cell configuration.

[0136] It should be noted that if the terminal device successfully executes a CHO for the first CHO cell, it can also release the configurations of other CHO cells and the CPAC candidate cell configurations associated with other CHO cell configurations. This application's embodiments are not intended to limit this.

[0137] The foregoing described the release conditions for the first CPAC candidate cell configuration when the CHO operation performed by the terminal device on the first CHO cell is successful, as described in the embodiments of this application. The following describes the release conditions for the first CAPC candidate cell configuration when the CHO operation performed by the terminal device on the first CHO cell fails, as described in the embodiments of this application.

[0138] In other scenarios, the terminal device will trigger RRC connection re-establishment after CHO execution fails. According to existing communication protocols, if the terminal device selects a new CHO cell, it will not release the variable "". VarConditionalReconfig The content in the document is as follows. However, in reality, if the terminal device successfully completes the CHO (Confirmation of Hazardous Cells) process, it only needs to evaluate the CPAC candidate cells associated with the successful CHO cell. As for the configuration of the first CPAC candidate cell associated with the first failed CHO cell, even if it is stored in the variable "..." VarConditionalReconfig "In the process, the terminal device will no longer use it, resulting in a waste of storage space."

[0139] Therefore, to save storage space, in this embodiment, when the CHO operation performed by the terminal device on the first CHO cell fails, the terminal device can clear the first CAPC candidate cell configuration associated with the first CHO cell configuration. Alternatively, when the terminal device successfully performs a CHO, the terminal device can clear the CAPC candidate cell configuration associated with the previously failed CHO cell. The variable "" is used to store the CAPC candidate cell configuration associated with the previously failed CHO cells. VarConditionalReconfig for SCG ".

[0140] Taking the configuration information of the first candidate cell as including the configuration of the first CPAC candidate cell as an example, the above method also includes: if the first condition is met, the terminal device releases the configuration of the first CPAC candidate cell.

[0141] In some implementations, the first condition mentioned above includes one or more of the following: the terminal device enters an idle state; the terminal device enters an inactive state; the terminal device's timer T304 times out; the terminal device receives an RRC release message; the terminal device fails to switch to the first CHO cell based on conditions; or the terminal device selects a cell other than the first CHO cell during the operation of timer T311.

[0142] Taking the first condition including the terminal device entering the idle state as an example, when the terminal device enters the idle state, it can be understood that the terminal device fails to execute the CHO for the first CHO cell, and the terminal device can release the configuration of the first CAPC candidate cell.

[0143] Taking the first condition including the terminal device entering the inactive state as an example, when the terminal device enters the inactive state, it can be understood that the terminal device failed to execute the CHO for the first CHO cell, and the terminal device can release the configuration of the first CAPC candidate cell.

[0144] Taking the first condition including the timer T304 of the terminal device timeout as an example, when the timer T304 times out, the handover of the terminal device in LTE FDD fails, and accordingly, the terminal device can release the configuration of the first CAPC candidate cell.

[0145] Taking the first condition including the terminal device receiving an RRC release message as an example, when the terminal device receives an RRC release message sent by the network device, the terminal device can release the configuration of the first CAPC candidate cell.

[0146] Taking the failure of the terminal device to switch to the first CHO cell based on the condition as an example, when the terminal device fails to switch to the first CHO cell, the terminal device can release the configuration of the first CAPC candidate cell.

[0147] Taking the first condition including the terminal device selecting a cell other than the first CHO cell during the operation of timer T311 as an example, timer T311 can typically be started when the terminal device initiates the initial RRC connection re-establishment. Correspondingly, once the terminal device selects a suitable cell (e.g., an E-UTRAN cell or an inter-RAT cell), the terminal device can stop timer T311.

[0148] Therefore, if the terminal device selects a cell other than the first CHO cell during the operation of timer T311, it means that the terminal device has found another suitable cell to access. The first CHO cell can be understood as the cell where the terminal device failed to execute CHO. At this time, the terminal device can release the configuration of the first CAPC candidate cell.

[0149] Scenario 2: Release conditions configured for the third CPAC candidate cell.

[0150] Currently, existing communication protocols stipulate that after receiving the candidate cell configuration (i.e., the third CAPC candidate cell configuration) during the SACG process, the terminal device will also store it in a variable. Furthermore, when the terminal device successfully executes CPA or CPC, it will immediately release / delete the third CAPC candidate cell configuration.

[0151] However, since the SACG process is a continuous CPAC process, meaning that even if the terminal device successfully executes CPA or CPC based on the third CAPC candidate cell configuration, it still needs to continue executing the next round of CPA or CPC based on the third CAPC candidate cell configuration. The current release mechanism for the third CAPC candidate cell configuration specified in the communication protocol prevents the terminal device from executing the next round of CPA or CPC.

[0152] Therefore, embodiments of this application provide a scheme for releasing candidate cell configurations. That is, if the terminal device successfully executes CPA or CPC based on the third CPAC candidate cell configuration, the terminal device releases the cell configurations other than the third CPAC candidate cell configuration.

[0153] It should be noted that the aforementioned other cell configurations may include one or more of the following: the first CHO cell configuration (e.g., the configuration associated with the MCG), the second CPAC candidate cell configuration, and the first CPAC candidate cell configuration. Of course, in this embodiment, other cell configurations may also include candidate cell configurations that have already been executed / applied.

[0154] For ease of understanding, the following uses the synchronization reconfiguration (referred to as "reconfigurationWithSync") included in the third CPAC candidate cell configuration as an example, and combines the description method of the communication protocol to introduce the release conditions of the third CPAC candidate cell configuration in this application embodiment.

[0155] 1> If `reconfigurationWithSync` is included in the variable `spCellConfig` of the MCG or SCG, and the NR cell group's MAC successfully completes the triggered random access procedure; 2> If `reconfigurationWithSync` is included in the `spCellConfig` variable of the `MCG`; 2> If `reconfigurationWithSync` is included in `spCellConfig` of `SCG`, and `CPA` or `CPC` is not configured as a `SACG` procedure: 3> Delete those included in MCG and SCG VarConditionalReconfig Other configurations besides the SACG process configuration, if any; 3> Based on the description of TS 36.331

[10] , Clause 5.3.5.9.6, delete the variable " VarConditionalReconfiguration The configuration stored in "" if any; Scenario 3: Release conditions provided in this application embodiment when the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration are configured simultaneously.

[0156] If the network device configures the CHO+CPAC procedure for the terminal device, after receiving the CHO+CPAC configuration, the terminal device will store the configuration of the candidate cell (including the CHO cell and CPAC) into the variable "". VarConditionalReconfig "If the network device also configures a CPAC procedure or a SACG procedure for the terminal device, the candidate cell configuration associated with the CPAC procedure and the candidate cell configuration associated with the SACG procedure may also be stored in this variable." VarConditionalReconfig "If the terminal device fails to access via CHO and triggers a reconstruction process, and selects a CHO cell (e.g., the first CHO cell), according to the existing protocol, the terminal device will change the variable " VarConditionalReconfig The configurations for both MCG and SCG are released.

[0157] During the CHO+CPAC process, the terminal device will continue to execute the CPAC process associated with the first CHO cell. This means the terminal device still needs to configure and execute the CPAC process based on the first CPAC candidate cell. According to the release mechanism specified in the existing protocol, this would prevent the terminal device from configuring and executing the CPAC process based on the first CPAC candidate cell.

[0158] During the SACG process, the terminal device still needs to continue executing the SACG process based on the third CPAC candidate cell configuration. According to the release mechanism stipulated in the existing protocol, the terminal device will also release the third CPAC candidate cell configuration, causing the terminal device to be unable to execute the SACG process based on the third CPAC candidate cell configuration.

[0159] Therefore, to address the above problems, this application provides a release mechanism, namely, the above method further includes: if the terminal device accesses the first CHO cell, the terminal device releases the cell configurations other than the first CPAC candidate cell configuration and the third CPAC candidate cell configuration.

[0160] It should be noted that the aforementioned other cell configurations may include the first CHO cell configuration (e.g., the configuration associated with the MCG) and / or the second CPAC candidate cell configuration. Of course, in this embodiment, other cell configurations may also include candidate cell configurations that have been executed and / or applied.

[0161] For ease of understanding, the following text will combine... Figure 4 The release scheme in the embodiments of this application is described. See also Figure 4As shown, the variables in the terminal device include the MCG variable "MCG var" and the SCG variable "SCG var". The MCG variable "MCG var" stores the CHO candidate cell configurations 1-3 associated with the CHO+CPAC process. The SCG variable "SCG var" can include two categories: Category 1 and Category 2. Category 1 stores the CPAC candidate cell configurations 1-3 associated with the CHO+CPAC process. Category 2 stores the CPAC candidate cell configurations 1-3 associated with the SACG process. Specifically, the CPAC candidate cell configuration associated with CHO candidate cell configuration 1 of CHO cell 1 is CPAC candidate cell configuration 2. The CPAC candidate cell configuration associated with CHO candidate cell configuration 2 of CHO cell 2 is CPAC candidate cell configuration 3. The CPAC candidate cell configuration associated with CHO candidate cell configuration 3 of CHO cell 3 is CPAC candidate cell configuration 1.

[0162] In some implementations, as shown in 410, after the terminal device successfully performs CHO for CHO cell 1, the terminal device can clear the CHO candidate cell configurations 1-3 in the variable "MCG var". It retains the CPAC candidate cell configurations 1-3 associated with the CHO+CPAC procedure and the CPAC candidate cell configurations 1-3 associated with the SACG procedure stored in the variable "SCG var".

[0163] In some other implementations, as shown in 420, after the terminal device successfully performs a CHO for CHO cell 1, the terminal device can clear the CHO candidate cell configurations 1-3 in the variable "MCG var". It retains the CPAC candidate cell configuration 2 stored in category 1, and all CPAC candidate cell configurations 1-3 associated with the SACG process stored in category 2.

[0164] In some other implementations, see 430, after the terminal device successfully executes CHO for CHO cell 1, the terminal device can clear the CHO candidate cell configurations 1-3 in the variable "MCG var" and all CPAC candidate cell configurations 1-3 associated with the SACG process stored in category 2, and only retain the CPAC candidate cell configuration 2 stored in category 1.

[0165] For ease of understanding, the following uses the synchronization reconfiguration (referred to as "reconfigurationWithSync") included in the third CPAC candidate cell configuration as an example, and combines the description method of the communication protocol to introduce the release conditions of the third CPAC candidate cell configuration in this application embodiment.

[0166] When a terminal device receives an RRC reconfiguration message or performs a conditional reconfiguration (CHO, CPA, or CPC), it should perform the following actions: 1> If the RRC reconfiguration message is applied due to conditional reconfiguration performed during cell selection while running timer T311, as defined in 5.3.7.3: 2> Delete variables MCG and SCG VarConditionalReconfig The configuration stored in "" except for the configuration associated with the SACG procedure or CHO+CPAC procedure (if any); The above text combined Figures 1 to 4 The method embodiments of this application are described in detail below, in conjunction with... Figures 5 to 7 The present application provides a detailed description of the apparatus embodiments. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be found in the foregoing method embodiments.

[0167] Figure 5 This is a schematic diagram of a terminal device according to an embodiment of this application. Figure 5 The terminal device 500 shown includes a receiving unit 510.

[0168] The receiving unit 510 is configured to receive first candidate cell configuration information sent by the network device, wherein the first candidate cell configuration information includes one or more of the following: first condition primary and secondary cell addition / change CPAC candidate cell configuration associated with the first condition handover CHO cell configuration, second CPAC candidate cell configuration, and third CPAC candidate cell configuration associated with selective activation SACG of cell group. Specifically, at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration have different storage methods; and / or at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration have different transmission methods; and / or at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration have different effective times.

[0169] In some implementations, the information transmitting the configuration of the first CPAC candidate cell is called first information, the information transmitting the configuration of the second CPAC candidate cell is called second information, and the information transmitting the configuration of the third CPAC candidate cell is called third information. The transmission methods of at least two of the first, second, and third CPAC candidate cell configurations are different, including one or more of the following: at least two of the first, second, and third information are different information; at least two of the first, second, and third information are different information elements (IEs) within the same information; at least two of the first, second, and third information correspond to different information nesting methods.

[0170] In some implementations, the first candidate cell configuration information carries first indication information, which indicates that the first candidate cell configuration information is one of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration.

[0171] In some implementations, the effective time of at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration is different, including: based on the protocol predefined, at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration do not take effect simultaneously.

[0172] In some implementations, the stored variable corresponding to the first CPAC candidate cell configuration is a first variable, the stored variable corresponding to the second CPAC candidate cell configuration is a second variable, and the stored variable corresponding to the third CPAC candidate cell configuration is a third variable. At least two different storage methods among the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration include: at least two of the first variable, the second variable, and the third variable are different variables; and / or at least two of the first variable, the second variable, and the third variable are different partitions of the same variable.

[0173] In some implementations, the first CHO cell configuration corresponds to the first CHO cell. If the first candidate cell configuration information includes the first CPAC candidate cell configuration, the terminal device further includes: if the terminal device determines the first CHO cell based on conditional handover, the first processing unit stores the first CPAC candidate cell configuration in the first variable.

[0174] In some implementations, the terminal device further includes: if the terminal device accesses the first CHO cell, the second processing unit releases other cell configurations besides the first CPAC candidate cell configuration.

[0175] In some implementations, if the first candidate cell configuration information includes the first CPAC candidate cell configuration, the terminal device further includes: if a first condition is met, the third processing unit releases the first CPAC candidate cell configuration, the first condition including one or more of the following: the terminal device enters an idle state; the terminal device enters an inactive state; the terminal device's timer T304 times out; the terminal device receives an RRC release message; the terminal device fails to switch the first CHO cell based on conditions; the terminal device completes the CHO and CPAC process associated with the first CPAC candidate cell configuration; during the operation of timer T311, the terminal device selects a cell other than the first CHO cell.

[0176] In some implementations, if the first candidate cell configuration information includes the third CPAC candidate cell configuration, the terminal device further includes: if the terminal device successfully executes CPA or CPC based on the third CPAC candidate cell configuration, a fourth processing unit is used to release other cell configurations besides the third CPAC candidate cell configuration.

[0177] In some implementations, if the first candidate cell configuration information includes the first CPAC candidate cell configuration and the third CPAC candidate cell configuration, the terminal device further includes: if the terminal device accesses the first CHO cell, a fifth processing unit is used to release other cell configurations besides the first CPAC candidate cell configuration and the third CPAC candidate cell configuration.

[0178] In some implementations, the other cell configurations include one or more of the first CHO cell configuration and the second CPAC candidate cell configuration.

[0179] Figure 6 This is a schematic diagram of a network device according to an embodiment of this application. Figure 6 The network device 600 shown includes: a transmitting unit 610.

[0180] The sending unit 610 is used to send first candidate cell configuration information to the terminal device, wherein the first candidate cell configuration information includes one or more of the following: first condition primary and secondary cell addition / change CPAC candidate cell configuration associated with the first condition handover CHO cell configuration, second CPAC candidate cell configuration, and third CPAC candidate cell configuration associated with selective activation SACG of cell group. Specifically, at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration have different storage methods; and / or at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration have different transmission methods; and / or at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration have different effective times.

[0181] In some implementations, the information transmitting the configuration of the first CPAC candidate cell is called first information, the information transmitting the configuration of the second CPAC candidate cell is called second information, and the information transmitting the configuration of the third CPAC candidate cell is called third information. The transmission methods of at least two of the first, second, and third CPAC candidate cell configurations are different, including one or more of the following: at least two of the first, second, and third information are different information; at least two of the first, second, and third information are different information elements (IEs) within the same information; at least two of the first, second, and third information correspond to different information nesting methods.

[0182] In some implementations, the first candidate cell configuration information carries first indication information, which indicates that the first candidate cell configuration information is one of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration.

[0183] In some implementations, the effective time of at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration is different, including: based on the protocol predefined, at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration do not take effect simultaneously.

[0184] In some implementations, the stored variable corresponding to the first CPAC candidate cell configuration is a first variable, the stored variable corresponding to the second CPAC candidate cell configuration is a second variable, and the stored variable corresponding to the third CPAC candidate cell configuration is a third variable. At least two different storage methods among the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration include: at least two of the first variable, the second variable, and the third variable are different variables; and / or at least two of the first variable, the second variable, and the third variable are different partitions of the same variable.

[0185] In some implementations, the first CHO cell configuration corresponds to the first CHO cell, and the first candidate cell configuration information includes the first CPAC candidate cell configuration. If the terminal device accesses the first CHO cell, then other cell configurations except for the first CPAC candidate cell configuration are released.

[0186] In some implementations, if the first candidate cell configuration information includes the first CPAC candidate cell configuration, the terminal device releases the first CPAC candidate cell configuration when a first condition is met. The first condition includes one or more of the following: the terminal device enters an idle state; the terminal device enters an inactive state; the terminal device's timer T304 times out; the terminal device receives an RRC release message; the terminal device fails to switch the first CHO cell based on conditions; the terminal device completes the CHO and CPAC process associated with the first CPAC candidate cell configuration; and the terminal device selects a cell other than the first CHO cell during the execution of timer T311.

[0187] In some implementations, the first candidate cell configuration information includes the third CPAC candidate cell configuration. If the terminal device successfully executes CPA or CPC based on the third CPAC candidate cell configuration, then other cell configurations other than the third CPAC candidate cell configuration are released.

[0188] In some implementations, the first candidate cell configuration information includes the first CPAC candidate cell configuration and the third CPAC candidate cell configuration. If the terminal device accesses the first CHO cell, then other cell configurations except for the first CPAC candidate cell configuration and the third CPAC candidate cell configuration are released.

[0189] In some implementations, the other cell configurations include one or more of the first CHO cell configuration and the second CPAC candidate cell configuration.

[0190] In an optional embodiment, the receiving unit 510 may be a transceiver 730. The terminal device 500 may also include a processor 710 and a memory 720, specifically as follows: Figure 7 As shown.

[0191] In an optional embodiment, the transmitting unit 610 may be a transceiver 730. The network device 600 may also include a processor 710 and a memory 720, specifically as follows: Figure 7 As shown.

[0192] Figure 7 This is a schematic structural diagram of a communication device according to an embodiment of this application. Figure 7 The dashed lines indicate that the unit or module is optional. The device 700 can be used to implement the methods described in the above method embodiments. The device 700 can be a chip, a terminal device, or a network device.

[0193] The apparatus 700 may include one or more processors 710. The processor 710 may support the apparatus 700 in implementing the methods described in the preceding method embodiments. The processor 710 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0194] The apparatus 700 may also include one or more memories 720. The memories 720 store a program that can be executed by the processor 710, causing the processor 710 to perform the methods described in the preceding method embodiments. The memories 720 may be independent of the processor 710 or integrated within the processor 710.

[0195] The device 700 may also include a transceiver 730. The processor 710 can communicate with other devices or chips via the transceiver 730. For example, the processor 710 can send and receive data with other devices or chips via the transceiver 730.

[0196] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal or network device provided in this application, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0197] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0198] This application also provides a computer program. This computer program can be applied to the terminal or network device provided in this application, and the computer program causes the computer to execute the methods performed by the terminal or network device in various embodiments of this application.

[0199] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0200] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0201] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0202] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0203] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0204] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0205] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0206] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its process and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0207] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical process division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0208] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0209] In addition, each process unit in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0210] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the process or procedure described in the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0211] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for wireless communication, characterized in that, include: The terminal device receives first candidate cell configuration information sent by the network device, wherein the first candidate cell configuration information includes one or more of the following: first condition primary and secondary cell addition / change CPAC candidate cell configuration associated with the first condition handover CHO cell configuration, second CPAC candidate cell configuration, and third CPAC candidate cell configuration associated with selective activation SACG of cell group; The information transmitting the configuration of the first CPAC candidate cell is the first information, the information transmitting the configuration of the second CPAC candidate cell is the second information, and the information transmitting the configuration of the third CPAC candidate cell is the third information. At least two of the first information, the second information, and the third information are different information elements (IEs) in the same information.

2. The method as described in claim 1, characterized in that, The stored variable corresponding to the configuration of the first CPAC candidate cell is the first variable, the stored variable corresponding to the configuration of the second CPAC candidate cell is the second variable, and the stored variable corresponding to the configuration of the third CPAC candidate cell is the third variable. Among them, at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration have different storage methods; Wherein, at least two storage methods differ in the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration, including: At least two of the first variable, the second variable, and the third variable are different variables; and / or At least two of the first variable, the second variable, and the third variable are different partitions of the same variable.

3. The method as described in claim 1 or 2, characterized in that, If the first candidate cell configuration information includes the first CPAC candidate cell configuration, the method further includes: If the first condition is met, the terminal device deletes the first CPAC candidate cell configuration. The first condition includes one or more of the following: The terminal device enters an idle state; The terminal device enters an inactive state; The timer T304 of the terminal device timed out; The terminal device receives the RRC release message; The terminal device failed to switch to the first CHO cell based on conditional handover. The terminal device completes the CHO and CPAC process associated with the configuration of the first CPAC candidate cell; During the operation of timer T311, the terminal device selects a cell other than the first CHO cell.

4. The method as described in claim 1 or 2, characterized in that, If the first candidate cell configuration information includes the third CPAC candidate cell configuration, the method further includes: If the terminal device successfully executes CPA or CPC based on the third CPAC candidate cell configuration, the terminal device deletes all cell configurations other than the third CPAC candidate cell configuration.

5. The method as described in claim 1 or 2, characterized in that, If the first candidate cell configuration information includes the third CPAC candidate cell configuration, the method further includes: If the RRC reconfiguration message is applied due to conditional reconfiguration performed during cell selection when running timer T311, the terminal device deletes all cell configurations except for the third CPAC candidate cell configuration.

6. A method for wireless communication, characterized in that, include: The network device sends first candidate cell configuration information to the terminal device, wherein the first candidate cell configuration information includes one or more of the following: first condition primary and secondary cell addition / change CPAC candidate cell configuration associated with the first condition handover CHO cell configuration, second CPAC candidate cell configuration, and third CPAC candidate cell configuration associated with selective activation SACG of cell group; Specifically, the information transmitted regarding the configuration of the first CPAC candidate cell is designated as first information, the information transmitted regarding the configuration of the second CPAC candidate cell is designated as second information, and the information transmitted regarding the configuration of the third CPAC candidate cell is designated as third information. Among them, at least two of the first information, the second information, and the third information are different information elements (IE) in the same information.

7. The method as described in claim 6, characterized in that, The stored variable corresponding to the configuration of the first CPAC candidate cell is the first variable, the stored variable corresponding to the configuration of the second CPAC candidate cell is the second variable, and the stored variable corresponding to the configuration of the third CPAC candidate cell is the third variable. Among them, at least two of the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration have different storage methods; Wherein, at least two storage methods differ in the first CPAC candidate cell configuration, the second CPAC candidate cell configuration, and the third CPAC candidate cell configuration, including: At least two of the first variable, the second variable, and the third variable are different variables; and / or At least two of the first variable, the second variable, and the third variable are different partitions of the same variable.

8. The method as described in claim 6 or 7, characterized in that, If the first candidate cell configuration information includes the first CPAC candidate cell configuration, the terminal device deletes the first CPAC candidate cell configuration if a first condition is met, wherein the first condition includes one or more of the following: The terminal device enters an idle state; The terminal device enters an inactive state; The timer T304 of the terminal device timed out; The terminal device receives the RRC release message; The terminal device failed to switch to the first CHO cell based on conditional handover. The terminal device completes the CHO and CPAC process associated with the configuration of the first CPAC candidate cell; During the operation of timer T311, the terminal device selects a cell other than the first CHO cell.

9. The method as described in claim 6 or 7, characterized in that, The first candidate cell configuration information includes the third CPAC candidate cell configuration. If the terminal device successfully executes CPA or CPC based on the third CPAC candidate cell configuration, then other cell configurations other than the third CPAC candidate cell configuration are deleted.

10. The method as described in claim 6 or 7, characterized in that, The first candidate cell configuration information includes the third CPAC candidate cell configuration. If the RRC reconfiguration message is applied due to conditional reconfiguration during cell selection when running timer T311, then all cell configurations other than the third CPAC candidate cell configuration are deleted.

11. A terminal device, characterized in that, It includes a memory and a processor, the memory being used to store a program, and the processor being used to invoke the program in the memory to cause the terminal device to perform the method as described in any one of claims 1-5.

12. A network device, characterized in that, It includes a memory and a processor, the memory being used to store a program, and the processor being used to invoke the program in the memory to cause the network device to perform the method as described in any one of claims 6-10.

13. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-10.

Images