Cell condition updating method, user equipment, and computer-readable storage medium

Abstract

A cell condition update method, user equipment, and computer-readable storage medium are disclosed. The update method includes: executing a primary and secondary cell update when it is determined that a candidate primary and secondary cell meets a primary and secondary cell update trigger condition; the candidate primary and secondary cell corresponds to a candidate secondary base station; and when executing the primary and secondary cell update, if it is detected that the candidate primary cell meets a conditional handover trigger condition, executing a primary cell handover and terminating the primary and secondary cell update. The above solution can process the ongoing PSCell update when the UE receives RRC signaling sent by the primary base station, so that the UE can correctly handle the PSCell update and link management on the primary base station side, avoid the UE entering an uncontrollable scenario, and improve the stability of the wireless link.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to a cell condition updating method, user equipment, and a computer-readable storage medium. Background Art

[0002] During the 3GPP discussion, a conditional handover (CHO) was introduced. Compared to existing handover procedures, the handover command includes a handover condition (or handover trigger condition), such as determining whether the signal quality of the candidate target cell is higher than that of the serving cell by a predetermined offset. After receiving the handover command, the user equipment (UE) determines whether the handover condition is met. If the condition is met, the UE uses the configuration parameters of the candidate target cell included in the handover command to access the target cell, synchronize with the target cell, and initiate a random access procedure in the target cell. If the handover condition is not met, the UE continues to maintain a radio resource control (RRC) connection with the source base station.

[0003] The conditional switching mechanism can be used for primary and secondary cell update (PSCell change) and primary and secondary cell addition (PSCell Addition) in dual connectivity. In dual connectivity, the UE maintains a connection with two base stations (one primary base station, the UE on the primary base station side is configured with at least a primary cell PCell; one secondary base station, the UE on the secondary base station side is configured with at least a primary and secondary cell PSCell), and can simultaneously receive signaling and data from the two base stations, as well as send signaling and data to the two base stations.

[0004] When the conditional switching mechanism is introduced in the PSCell change, the master node (MN) can determine one or several candidate primary and secondary cells (Primary Secondary Cell), as well as the update (change) triggering conditions corresponding to each candidate primary and secondary cell. It should be noted that for PSCell update, it is strictly speaking not a "handover", because for UE in dual-connection state, the master base station is responsible for the UE's RRC connection establishment and link management such as handover decisions; the secondary base station is mainly responsible for data transmission. When the secondary base station changes or the PSCell changes, it can only be called a secondary base station change or a PSCell change. When the primary cell PCell changes, it can be called a handover. This article uses cell update to represent PCellchange and PSCell change. For PSCell Change, it can occur within the same secondary base station or between different secondary base stations. The PSCell change between different secondary base stations can also be called a secondary base station change (SNchange).

[0005] The primary base station sends a primary / secondary cell conditional change request (PSCellconditionalchangerequest) to the secondary base station to which the candidate primary / secondary cell belongs. The PSCellconditionalchangerequest includes the radio parameters configured by the MN for the UE, particularly the secondary base station configuration restriction information (ConfigRestrictInfoSCG) set by the MN, as well as the UE capability information and the radio parameters configured by the source secondary base station for the UE (sourceConfigSCG).

[0006] After receiving the PSCell conditional change request, the candidate secondary base station makes an admission control decision based on information such as the cell load, and accepts or rejects the request. If the request is accepted, the radio parameters (SCG configuration) of the candidate secondary cell group are configured for the UE, and a confirmation message is returned to the primary base station, which carries the radio parameters of the candidate secondary cell group configured for the UE. After receiving the confirmation message, the primary base station sends the radio parameters of the candidate secondary cell group, the candidate primary and secondary cell identifiers, and the primary and secondary cell update (PSCell change) trigger conditions to the UE through RRC signaling. After receiving the RRC signaling, the UE saves the received information and starts to evaluate the candidate primary and secondary cells. When the candidate primary and secondary cells meet the PSCell change trigger conditions, the PSCell change is started.

[0007] In the prior art, when a UE is in the process of updating the conditions of its primary and secondary cells (PSCell change), and the UE has already started performing the primary and secondary cell update (PSCell change), the UE still maintains a connection with the primary base station. At this time, the UE may detect that the candidate primary cell meets the conditional handover trigger conditions, which conflicts with the currently executing PSCell change. Existing protocols do not provide a corresponding solution for this scenario. Summary of the Invention

[0008] The technical problem solved by the embodiment of the present invention is how to process the PSCell change being executed when the UE detects that the candidate primary cell meets the conditional switching trigger condition, so that the UE can correctly handle the link management between the PSCell change and the primary base station side, avoid the UE from entering an uncontrollable scenario, and improve the stability of the wireless link.

[0009] To solve the above technical problems, an embodiment of the present invention provides a cell condition update method, including: when it is determined that the candidate primary and secondary cells meet the primary and secondary cell update trigger conditions, performing the primary and secondary cell update; the candidate primary and secondary cells correspond to the candidate secondary base stations; when performing the primary and secondary cell update, if it is detected that the candidate primary cell meets the conditional switching trigger conditions, performing the primary cell switching and terminating the primary and secondary cell update.

[0010] Optionally, the cell condition update method also includes: when executing the primary and secondary cell update, receiving RRC signaling sent by the main base station; if the RRC signaling is a preset type of RRC signaling, terminating the execution of the primary and secondary cell update; the preset type of RRC signaling includes any one of the following: RRC signaling for primary cell update, RRC signaling for primary and secondary cell update, and release signaling of primary and secondary cells.

[0011] Optionally, after receiving the RRC signaling for the primary cell update, the method further includes: when detecting that the RRC signaling for the primary cell update does not include the secondary cell group information, deleting the secondary cell group information corresponding to the source secondary base station and the secondary cell group information corresponding to the candidate secondary base station.

[0012] Optionally, after receiving the RRC signaling for updating the primary cell, the method further includes: when detecting that the RRC signaling for updating the primary cell includes new secondary cell group information, accessing a target secondary base station corresponding to the new secondary cell group information according to the new secondary cell group information.

[0013] Optionally, after receiving the RRC signaling for updating the primary cell, the method further includes: when detecting that the RRC signaling for updating the primary cell includes source secondary base station information, accessing the source secondary base station through a random access procedure.

[0014] Optionally, after detecting that the RRC signaling for updating the primary cell includes source secondary base station information, the method further includes: saving secondary cell group information corresponding to the candidate secondary base station.

[0015] Optionally, after receiving the RRC signaling for updating the primary and secondary cells sent by the primary base station, the method further includes: accessing the primary and secondary cells indicated by the RRC signaling for updating the primary and secondary cells.

[0016] Optionally, after determining that the candidate primary and secondary cells meet the primary and secondary cell update triggering condition, the method further includes: sending the candidate primary and secondary cells that meet the update triggering condition to the primary base station.

[0017] An embodiment of the present invention further provides another cell condition updating method, applied to user equipment, comprising: during the process of updating the primary and secondary cell conditions, if it is detected that the candidate primary cell meets the conditional switching triggering condition, executing the primary cell switching.

[0018] Optionally, the cell condition update method further includes: if it is found that only the candidate primary and secondary cells meet the primary and secondary cell update triggering condition, executing the primary and secondary cell update.

[0019] To solve the above technical problems, an embodiment of the present invention also provides a user equipment, including: a configuration unit, used to simultaneously configure the conditional switching of the primary cell and the conditional update of the primary and secondary cells; an evaluation unit, used to evaluate the candidate primary cell and the candidate primary and secondary cells; an execution unit, used to execute the primary cell switching when it is found that the candidate primary and secondary cells meet the primary and secondary cell update trigger conditions and the candidate primary cell meets the conditional switching trigger conditions.

[0020] An embodiment of the present invention also provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, on which computer instructions are stored. When the computer instructions are executed, the steps of any of the above-mentioned cell condition updating methods are executed.

[0021] An embodiment of the present invention further provides another user equipment, comprising a memory and a processor, wherein the memory stores computer instructions that can be executed on the processor, and the processor executes the steps of any of the above-mentioned cell condition updating methods when executing the computer instructions.

[0022] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0023] During the primary / secondary cell update process, if the UE detects that the candidate primary cell meets the conditional handover trigger conditions, the ongoing PSCell change is terminated. The above solution allows the UE to correctly handle the link management between the PSCell change and the primary base station, preventing the UE from entering an uncontrollable scenario and improving the stability of the wireless link.

[0024] Furthermore, when an abnormal connection with the primary base station is detected, the primary and secondary cell updates are terminated, the secondary cell group information corresponding to the source secondary base station is retained, and the secondary cell group information corresponding to the candidate secondary base station is deleted, which can further ensure the robustness of the user equipment communication link. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a step of a method for updating cell conditions in an embodiment of the present invention;

[0026] Figure 2 is a structural diagram of a user equipment in an embodiment of the present invention;

[0027] Figure 3 This is a flowchart of a PSCell conditional change in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] As mentioned above, in existing cell condition update technologies, when a dual-connected user equipment (UE) is performing a primary / secondary cell change (PSCell change), the UE maintains a connection with the primary base station. At this point, the UE may detect that the candidate primary cell meets the conditional handover trigger conditions, which conflicts with the currently executing PSCell change. Existing protocols do not provide a corresponding solution for this scenario.

[0029] In this embodiment of the present invention, during the primary / secondary cell update process, if the UE detects that the candidate primary cell meets the conditional handover triggering conditions, the ongoing PSCell change is terminated. This solution facilitates the UE to correctly handle the link management between the PSCell change and the primary base station, preventing the UE from entering an uncontrollable scenario and improving the stability of the wireless link.

[0030] In order to make the above-mentioned objects, features and beneficial effects of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] Reference Figure 1 , a cell condition updating method in an embodiment of the present invention is given, which is described in detail through specific steps below.

[0032] Step S101: When it is determined that the candidate primary and secondary cells meet the primary and secondary cell update triggering condition, the primary and secondary cells are updated.

[0033] When the UE determines that the candidate primary and secondary cells meet the primary and secondary cell update triggering condition, the primary and secondary cell update operation can be performed. The specific primary and secondary cell update triggering condition can be set using different mechanisms such as existing measurement events A3 or A5, which are not limited in this embodiment of the present invention.

[0034] In this step, when the UE determines that the candidate primary and secondary cells meet the primary and secondary cell update triggering conditions, it can indicate the determined target primary and secondary cells to the primary base station, that is, the target primary and secondary cells that the UE will access. The UE can indicate the determined target primary and secondary cells to be accessed to the primary base station through RRC signaling, and can indicate the identifier of the cell.

[0035] In this embodiment of the present invention, the candidate primary and secondary cells are governed by the candidate secondary base station, the primary cell is governed by the primary base station, and the source primary and secondary cells are governed by the source secondary base station. Before the UE performs a primary and secondary cell update, the UE establishes a dual connection with the master node (MN) and the source secondary base station (SN).

[0036] In actual applications, it can be known that there can be different types of dual connections, such as LTE dual connection, LTE and New Radio (NR) dual connection, NR dual connection, etc. For LTE and NR dual connection, it can include EN-DC (LTE base station as the main base station of UE, NR base station as the auxiliary base station of UE), NE-DC (NR base station as the main base station of UE, LTE base station as the auxiliary base station of UE), NGEN-DC (LTE base station connected to the 5G core network as the main base station of UE, NR base station as the auxiliary base station of UE). The process of establishing dual connection belongs to the prior art and is not described in detail in the embodiments of the present invention. For details, please refer to 3GPP protocol TS37.340.

[0037] Step S102: When performing the primary and secondary cell update, receive the RRC signaling sent by the primary base station.

[0038] In a specific implementation, while the UE is performing a PSCell change, because the UE and the mobile network (MN) maintain a connection, the UE can continue to receive RRC signaling from the MN. If the RRC signaling from the MN is only for modifying MN-side radio parameters, the UE can continue to perform the PSCell change. However, the RRC signaling from the MN received by the UE may also be other types of signaling.

[0039] Therefore, after receiving the RRC signaling sent by the primary base station, step S103 may be executed.

[0040] Step S103: Determine whether the received RRC signaling is an RRC signaling of a preset type.

[0041] In an embodiment of the present invention, the preset type of RRC signaling may be RRC signaling for updating a primary cell, RRC signaling for updating a primary / secondary cell, or signaling for releasing a primary / secondary cell or releasing a secondary cell group (ReleaseSCG). When the user equipment detects that the received RRC signaling is any of the above types of RRC signaling, the user equipment may execute step S104.

[0042] When the received RRC signaling is not of the preset type, the received RRC signaling may be processed according to the existing operation procedure, and the PSCell change may continue to be executed.

[0043] For example, if the received RRC signaling is an RRC signaling for modifying the radio parameters of the current MN side, and the RRC signaling is not the RRC signaling of the above-mentioned preset type, the UE may continue to perform the PSCell change.

[0044] Step S104: terminating the updating of the primary and secondary cells.

[0045] In a specific implementation, during the UE's PSCell change process, if the UE receives RRC signaling for a primary cell update, the UE may terminate the PSCell change, i.e., stop accessing the candidate secondary base station. During the UE's PSCell change process, if the UE receives RRC signaling for a primary or secondary cell update, or receives release signaling for a primary or secondary cell, the UE may also terminate the PSCell change, i.e., stop accessing the candidate secondary base station.

[0046] In a specific implementation, after receiving the RRC signaling for the primary cell update, the content of the RRC signaling for the primary cell update can be obtained. When the UE detects that the RRC signaling for the primary cell update does not include secondary cell group (SCG) information, the UE can delete the saved SCG information corresponding to the source secondary base station and the SCG information corresponding to the candidate secondary base station.

[0047] In a specific implementation, when the UE detects that the RRC signaling of the primary cell update includes new SCG information, it can access the target secondary base station corresponding to the new SCG information according to the new SCG information.

[0048] When the target secondary base station adopts delta signaling mode, the UE can generate target configuration information based on the SCG information corresponding to the source secondary base station and the new SCG information. Then, the UE accesses the target secondary base station according to the target configuration information.

[0049] In a specific implementation, when the UE detects that the RRC signaling for the primary cell update includes information about the source secondary base station, the UE can terminate access to the candidate secondary base station and perform a random access procedure to access the source secondary base station. After successful random access, the UE can receive physical layer control signaling and data sent by the source secondary base station. At this time, although the UE terminates access to the candidate secondary base station, it can save the SCG information corresponding to the candidate secondary base station. Because the UE may need to perform a PSCell conditional change again to meet mobility requirements, saving the SCG information corresponding to these candidate secondary base stations can avoid the network from reconfiguring the parameters of these candidate primary and secondary cells, effectively saving air interface signaling overhead.

[0050] In a specific implementation, while the UE is performing a PSCell change, it may also be performing a PCell conditional handover or PCell conditional change. That is, during the PSCell change, the UE detects that the candidate PCell meets the conditional handover trigger condition and begins PCell handover. Furthermore, the candidate PCell is not configured with an SCG or is configured with an SCG related to another primary or secondary cell. In these scenarios, the UE may terminate the ongoing PSCell change.

[0051] In a specific implementation, when the UE is executing PSCell change, if any of the following situations occurs, the UE can terminate the execution of PSCell change, retain the SCG information corresponding to the source SN, and delete the SCG information corresponding to the candidate secondary base station: detecting failure of the main cell wireless link, integrity protection failure (that is, detecting integrity verification failure), receiving the RRC signaling sent by the main base station but failing to comply with the configuration parameters therein (such as RRC reconfiguration failure), and triggering RRC connection reconstruction.

[0052] It can be seen that when an abnormal connection with the primary base station is detected, the update of the primary and secondary cells is terminated, the secondary cell group information corresponding to the source secondary base station is retained, and the secondary cell group information corresponding to the candidate secondary base station is deleted. At this time, the UE needs to give priority to the recovery of the RRC connection. Termination of the update of the primary and secondary cells helps the UE speed up the recovery of the RRC connection, which can further ensure the robustness of the user equipment communication link.

[0053] In summary, using the cell condition update method provided in an embodiment of the present invention, during the primary and secondary cell update process, upon receiving RRC signaling sent by the primary base station, if the received RRC signaling is of a preset type, the ongoing PSCell change is processed and terminated. The above solution facilitates the UE to correctly handle the link management between the PSCell change and the primary base station, prevents the UE from entering an uncontrollable scenario, and improves the stability of the wireless link.

[0054] In a specific implementation, the primary and secondary cells are indicated in the RRC signaling for primary and secondary cell update. When the UE receives the RRC signaling for primary and secondary cell update sent by the primary base station, the UE can access the primary and secondary cells indicated by the RRC signaling for primary and secondary cell update.

[0055] In a specific implementation, when the received RRC signaling is a release signaling of the primary secondary cell or releases the secondary cell master information, the UE may delete the secondary cell group information corresponding to the source secondary base station and the secondary cell group information corresponding to the candidate secondary base station.

[0056] In a specific implementation, after the UE determines that the candidate primary and secondary cells meet the primary and secondary cell update triggering conditions, the UE may also send primary and secondary cell update information to the MN. The primary and secondary cell update information may indicate the candidate primary and secondary cells that meet the update triggering conditions, or indicate the target primary and secondary cells selected by the UE.

[0057] In an embodiment of the present invention, the primary and secondary cell update information may carry identification information corresponding to candidate primary and secondary cells that meet the update triggering conditions. After receiving the primary and secondary cell update information, the MN may obtain the identification information therefrom and thereby learn the candidate primary and secondary cells that meet the update triggering conditions.

[0058] It is understandable that, in actual applications, the primary and secondary cell update information may also carry other information that can indicate candidate primary and secondary cells that meet the update triggering condition, and is not limited to the above identification information.

[0059] Reference Figure 3 , a flowchart of a PSCell conditional change in an embodiment of the present invention is given, and the following is a detailed description through specific steps.

[0060] Step 1: The UE establishes dual connectivity.

[0061] In actual applications, it can be known that dual connections can be of different types, such as LTE dual connection, LTE and New Radio (NR) dual connection, NR dual connection, etc. For LTE and NR dual connection, it can include EN-DC (LTE base station as the main base station of UE, NR base station as the auxiliary base station of UE), NE-DC (NR base station as the main base station of UE, LTE base station as the auxiliary base station of UE), NGEN-DC (LTE base station connected to the 5G core network as the main base station of UE, NR base station as the auxiliary base station of UE). The process of establishing dual connection belongs to the existing technology and will not be described in detail in this article. For details, please refer to 3GPP protocol TS37.340.

[0062] Step 2: The UE performs measurement according to the measurement configuration and reports a measurement report to the network when the reporting conditions are met.

[0063] In a specific implementation, the UE can perform measurements according to the measurement tasks configured by the master base station (Master Node, MN), and then report a measurement report to the master base station when there is a neighboring cell or serving cell that meets the reporting conditions. The report carries the identifier and signal quality of the neighboring cell and / or serving cell that meets the reporting conditions, that is, the report carries the identifier and signal quality of the neighboring cell that meets the reporting conditions, or the identifier and signal quality of the serving cell, or the identifier and signal quality of the neighboring cell and the identifier and signal quality of the serving cell.

[0064] Step 3: The primary base station decides to perform primary and secondary cell condition update based on the measurement report.

[0065] Steps 4 and 4A: The primary base station selects one or more candidate primary and secondary cells and sends a primary and secondary cell condition update request to the base station to which the candidate primary and secondary cells belong, namely the candidate secondary base station. The request includes the radio parameters configured for the UE by the primary base station, particularly the secondary base station configuration restriction information (ConfigRestrictInfoSCG) set by the primary base station, as well as UE capability information and the radio parameters configured for the UE by the source secondary base station (sourceConfigSCG). The request also includes the trigger condition (Trigger condition or execution condition) for the primary and secondary cell update and the candidate primary and secondary cell identifier. The condition can be that the UE determines whether the candidate primary and secondary cells meet the update condition. If so, the UE executes the primary and secondary cell update (PSCellchange or SN change). The trigger condition can be that the signal quality of the candidate primary and secondary cell is higher than the signal quality of the source primary and secondary cell by a preset offset.

[0066] It should be noted that the primary / secondary cell condition update request may be named differently, such as secondary base station condition update request. A UE in dual connectivity can configure carrier aggregation on the secondary base station side. Therefore, the primary / secondary cell condition update request is not limited to updates to the PSCell but may also include updates to other secondary cells. That is, the candidate secondary base station may configure only the candidate PSCell parameters for the UE, or it may configure the candidate PSCell parameters and the parameters of one or more secondary cells for the UE.

[0067] When the primary base station selects multiple candidate primary and secondary cells, it may send primary and secondary cell condition update requests to the multiple candidate secondary base stations in parallel or sequentially.

[0068] Steps 5 and 5A: After receiving the primary and secondary cell condition update request, candidate secondary base station 1 and candidate secondary base station 2 perform admission control based on cell load and other factors, and accept the update request if resources permit.

[0069] Steps 6 and 6A: After receiving the update request, candidate secondary base station 1 and candidate secondary base station 2 allocate necessary radio resources, such as random access resources, to the UE, and return a primary and secondary cell condition update confirmation to the primary base station. The confirmation message includes the radio resources configured for the UE, namely, SCG config.

[0070] Step 7: The primary base station sends signaling for updating the primary and secondary cell conditions to the UE. The primary base station can send multiple primary and secondary cell condition update information at once through RRC reconfiguration signaling, or can use multiple RRC reconfiguration signaling messages to send multiple primary and secondary cell condition update information in sequence. The primary and secondary cell condition update information includes the identifiers of the candidate primary and secondary cells, the triggering conditions for the primary and secondary cell update, and the radio resources configured by the candidate secondary base station for the UE. Different candidate primary and secondary cells can have different or the same update triggering conditions.

[0071] Step 8: The UE receives the information about the primary and secondary cell condition update and starts to evaluate whether the candidate primary and secondary cells meet the triggering conditions for the update.

[0072] Step 9: The UE finds that at least one candidate primary and secondary cell meets the update triggering conditions. If there are multiple candidate primary and secondary cells that meet the PSCell update triggering conditions, the UE may select the candidate primary and secondary cell with the best signal quality as the target primary and secondary cell for update, or may randomly select a candidate primary and secondary cell as the target primary and secondary cell for update.

[0073] Step 10: The UE indicates to the primary base station the determined target primary and secondary cells, that is, the target primary and secondary cells that the UE will access. The UE may indicate to the primary base station the determined target primary and secondary cells to access through RRC signaling, and may indicate the identifier of the cell. After receiving the indication information, the primary base station may forward the data of the data radio bearer established by the UE to the target secondary base station in advance, so that the UE can immediately receive the downlink data sent by the target secondary base station after accessing the target secondary base station.

[0074] Step 11: The UE performs random access through the radio resources configured by the determined target secondary base station for the UE, and accesses the target secondary base station.

[0075] Steps 10 and 11 can be performed in parallel. Step 10 is optional.

[0076] Step 12: After the UE successfully accesses the target secondary base station, the target secondary base station sends a primary and secondary cell update completion message to the primary base station.

[0077] Steps 13 and 13A: the primary base station notifies the source secondary base station and other candidate secondary base stations to release the UE context.

[0078] In an embodiment of the present invention, Figure 3 Steps 8 and 9 in the Figure 1 Step S101 in the example above is to determine whether there is a primary or secondary cell that meets the triggering condition. If there is a primary or secondary cell that meets the triggering condition, subsequent steps 10 to 13 and step 13A may be performed.

[0079] Reference Figure 2 , a user equipment 20 in an embodiment of the present invention is provided, comprising: a condition judgment unit 201, an execution unit 202, a receiving unit 203, a type judgment unit 204, and a control unit 205, wherein:

[0080] A condition judgment unit 201 is configured to judge whether a candidate primary and secondary cell satisfies a primary and secondary cell update triggering condition;

[0081] An executing unit 202 is configured to execute a primary and secondary cell update when the determining unit 201 determines that the candidate primary and secondary cells meet the primary and secondary cell update triggering condition;

[0082] The receiving unit 203 is configured to receive RRC signaling sent by the primary base station when the executing unit 202 executes the primary and secondary cell update;

[0083] The type determination unit 204 is configured to determine whether the received RRC signaling is an RRC signaling of a preset type; the preset type of RRC signaling includes any one of the following: RRC signaling for updating a primary cell, RRC signaling for updating a primary and secondary cell, and release signaling of a primary and secondary cell;

[0084] The control unit 205 is configured to terminate the execution of the primary and secondary cell update when the received RRC signaling is of the preset type.

[0085] In a specific implementation, the control unit 205 may also be configured to delete the secondary cell group information corresponding to the source secondary base station and the secondary cell group information corresponding to the candidate secondary base station when detecting that the RRC signaling for the primary cell update does not include the secondary cell group information.

[0086] In a specific implementation, the control unit 205 may be further configured to, when detecting that the RRC signaling of the primary cell update includes new secondary cell group information, access the target secondary base station corresponding to the new secondary cell group information according to the new secondary cell group information.

[0087] In a specific implementation, the control unit 205 can be used to generate target configuration information according to the secondary cell group information corresponding to the source secondary base station and the new secondary cell group information when the target secondary base station adopts the incremental signaling mode; and access the target secondary base station based on the target configuration information.

[0088] In a specific implementation, the control unit 205 may also be configured to terminate access to the candidate secondary base station when detecting that the RRC signaling for updating the primary cell includes information of the source secondary base station.

[0089] In a specific implementation, the control unit 205 may be further configured to save the secondary cell group information corresponding to the candidate secondary base station after detecting that the RRC signaling for the primary cell update includes the source secondary base station information.

[0090] In a specific implementation, the user equipment 20 may further include a primary cell switching unit ( Figure 2 (not shown) can be used to, when the execution unit executes the primary and secondary cell update, if it is detected that the candidate primary cell meets the conditional switching trigger condition, execute the primary cell switching and terminate the primary and secondary cell update.

[0091] In a specific implementation, the control unit 205 may also be configured to access the primary and secondary cells indicated by the RRC signaling for updating the primary and secondary cells after the type determination unit 204 determines that the received RRC signaling is the RRC signaling for updating the primary and secondary cells.

[0092] In a specific implementation, the control unit 205 may also be configured to delete the secondary cell group information corresponding to the source secondary base station and the secondary cell group information corresponding to the candidate secondary base station after the type determination unit 204 determines that the received RRC signaling is the release signaling of the primary and secondary cells.

[0093] In a specific implementation, the user equipment 20 may further include: a sending unit ( Figure 2 (not shown) is used to send primary and secondary cell update information to the primary base station after the condition judgment unit 201 determines that the candidate primary and secondary cells meet the primary and secondary cell update trigger conditions, and indicate the candidate primary and secondary cells that meet the update trigger conditions or indicate the target primary and secondary cells in the primary and secondary cell update information.

[0094] In a specific implementation, the user equipment 20 may further include a termination unit ( Figure 2 (not shown) is used to terminate the update of the primary and secondary cells if an abnormal connection with the primary base station is detected when the execution unit executes the update of the primary and secondary cells; the scenarios of abnormal connection with the primary base station include at least one of the following: detection of failure of the primary cell radio link, failure of integrity protection, receipt of RRC signaling sent by the primary base station but inability to comply with the configuration parameters therein, and triggering RRC connection reconstruction.

[0095] In a specific implementation, the user equipment 20 may further include: a storage unit ( Figure 2 (not shown) is used to retain the secondary cell group information corresponding to the source secondary base station and delete the secondary cell group information corresponding to the candidate secondary base station.

[0096] An embodiment of the present invention also provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, on which computer instructions are stored. When the computer instructions are executed, the steps of the cell condition updating method provided in any of the above embodiments of the present invention are executed.

[0097] An embodiment of the present invention also provides another user equipment, including a memory and a processor, wherein the memory stores computer instructions that can be executed on the processor, and when the processor executes the computer instructions, it executes the steps of the cell condition updating method provided in any of the above embodiments of the present invention.

[0098] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, which may include: ROM, RAM, disk or CD, etc.

[0099] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A cell condition updating method, applied to a user equipment, characterized in that: include: When it is determined that the candidate primary and secondary cells meet the primary and secondary cell update triggering condition, performing the primary and secondary cell update; the candidate primary and secondary cells correspond to the candidate secondary base stations; During the process of executing the primary and secondary cell update, if it is detected that the candidate primary cell meets the conditional switching triggering condition, the primary cell switching is executed and the primary and secondary cell update is terminated; During the process of executing the primary and secondary cell update, RRC signaling sent by the primary base station is also received; if the RRC signaling is a preset type of signaling, the execution of the primary and secondary cell update is terminated; the preset type of RRC signaling includes any one of the following: RRC signaling for primary cell update, release signaling of primary and secondary cells, and RRC signaling for primary and secondary cell update; After receiving the RRC signaling for the primary cell update, when detecting that the RRC signaling for the primary cell update does not include the secondary cell group information, deleting the secondary cell group information corresponding to the source secondary base station and the secondary cell group information corresponding to the candidate secondary base station; After determining that the candidate primary and secondary cells meet the primary and secondary cell update triggering condition, the method further includes: sending primary and secondary cell update information to the primary base station, and carrying identification information corresponding to the candidate primary and secondary cells meeting the update triggering condition in the primary and secondary cell update information.

2. The cell condition updating method according to claim 1, wherein: After receiving the RRC signaling of the primary cell update, the method further includes: When it is detected that the RRC signaling for the primary cell update includes new secondary cell group information, the target secondary base station corresponding to the new secondary cell group information is accessed according to the new secondary cell group information.

3. The cell condition updating method according to claim 2, wherein: The accessing, according to the new secondary cell group information, a target secondary base station corresponding to the new secondary cell group information includes: When the target secondary base station adopts the incremental signaling mode, generating target configuration information according to the secondary cell group information corresponding to the source secondary base station and the new secondary cell group information; Based on the target configuration information, access the target secondary base station.

4. The cell condition updating method according to claim 1, wherein: After receiving the RRC signaling of the primary cell update, the method further includes: When it is detected that the RRC signaling for updating the primary cell includes the source secondary base station information, the source secondary base station is accessed through a random access procedure.

5. The cell condition updating method according to claim 4, wherein: After detecting that the RRC signaling for updating the primary cell includes information of the source secondary base station, the method further includes: The secondary cell group information corresponding to the candidate secondary base station is saved.

6. The cell condition updating method according to claim 1, wherein: After receiving the RRC signaling for updating the primary and secondary cells sent by the primary base station, the method further includes: Access the primary and secondary cells indicated by the RRC signaling for updating the primary and secondary cells.

7. The cell condition updating method according to claim 1, wherein: After receiving the release signaling of the primary and secondary cells sent by the primary base station, the method further includes: The secondary cell group information corresponding to the source secondary base station and the secondary cell group information corresponding to the candidate secondary base station are deleted.

8. The cell condition updating method according to claim 1, wherein: Also includes: During the process of performing the primary and secondary cell update, if an abnormal connection with the primary base station is detected, terminating the primary and secondary cell update; The scenarios of abnormal connection with the primary base station include at least one of the following: detecting a primary cell radio link failure, integrity protection failure, receiving RRC signaling sent by the primary base station but failing to comply with the configuration parameters therein, and triggering RRC connection reconstruction.

9. The cell condition updating method according to claim 8, wherein: After terminating the updating of the primary and secondary cells, the method further includes: The secondary cell group information corresponding to the source secondary base station is retained, and the secondary cell group information corresponding to the candidate secondary base station is deleted.

10. A user equipment, characterized in that: include: A first execution unit is configured to execute a primary and secondary cell update when it is determined that a candidate primary and secondary cell meets a primary and secondary cell update triggering condition; the candidate primary and secondary cell corresponds to a candidate secondary base station; The second execution unit is used to, during the process of executing the update of the primary and secondary cells, if it is detected that the candidate primary cell meets the conditional switching trigger condition, execute the primary cell switching and terminate the primary and secondary cell update; and, during the process of executing the update of the primary and secondary cells, also receive the RRC signaling sent by the primary base station; if the RRC signaling is a preset type of signaling, terminate the execution of the primary and secondary cell update; the preset type of RRC signaling includes any one of the following: RRC signaling for primary cell update, release signaling for primary and secondary cells, and RRC signaling for primary and secondary cell update; after receiving the RRC signaling for the primary cell update, when it is detected that the RRC signaling for the primary cell update does not include secondary cell group information, delete the secondary cell group information corresponding to the source secondary base station and the secondary cell group information corresponding to the candidate secondary base station; after determining that the candidate primary and secondary cells meet the primary and secondary cell update trigger condition, it also includes: sending primary and secondary cell update information to the primary base station, and carrying the identification information corresponding to the candidate primary and secondary cells that meet the update trigger condition in the primary and secondary cell update information.

11. A computer-readable storage medium, wherein the computer-readable storage medium is a non-volatile storage medium or a non-transient storage medium, and wherein computer instructions are stored thereon, wherein: When the computer instructions are executed, the steps of the cell condition updating method according to any one of claims 1 to 9 are executed.

12. A user device comprising a memory and a processor, wherein the memory stores computer instructions that can be executed on the processor, characterized in that: When the processor runs the computer instructions, it performs the steps of the cell condition updating method according to any one of claims 1 to 9.

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