Cell switching method, terminal and storage medium

Abstract

The embodiment of the invention provides a cell switching method, a terminal and a storage medium, and the method comprises the steps: judging whether a conditional main and auxiliary cell adding CPA or a conditional main and auxiliary cell changing CPC event of one or more first candidate main and auxiliary cells associated with a first candidate main cell is satisfied or not if a conditional switching CHO event of the first candidate main cell is satisfied; if it is judged that the CPA or CPC event of at least one first candidate primary and secondary cell exists, switching to the first candidate primary cell and using one of the at least one first candidate primary and secondary cell to perform dual connectivity; if it is judged that the CPA or CPC event of the first candidate primary and secondary cell does not exist, determining a switched target primary cell according to a switching strategy corresponding to a first switching scene or a second switching scene or a third switching scene under the condition that the first switching scene or the second switching scene or the third switching scene is detected to be met; and switching to the target main cell.

Description

Technical Field

[0001] The present application relates to the field of wireless communications, and in particular to a cell switching method, a terminal, and a storage medium. Background Art

[0002] Conditional Handover (CHO) is defined as: when one or more handover execution conditions are met, the terminal performs handover by itself. Therefore, the terminal starts to evaluate the execution conditions after receiving the CHO configuration, and once the handover is performed, the terminal stops evaluating the execution conditions. In order to enable the terminal to quickly use dual connections after the primary cell is switched and improve the data transmission rate of the terminal, a mechanism is proposed to jointly configure the terminal with a CHO event for the primary cell and a Conditional PSCell Addition (CPA) event or a Conditional PSCell Change (CPC) event for the primary and secondary cells.

[0003] Since the joint configuration of CHO+CPA or CPC configures the terminal with the CHO event for the primary cell and the CPA / CPC event for the primary and secondary cells, the terminal can use dual connectivity in the target cell or base station only when both the CHO event and the CPA / CPC event are satisfied. When the CHO event of the candidate primary cell is not synchronized with the CPA / CPC event of the candidate primary and secondary cells, a Radio Link Failure (RLF) will occur in the currently serving cell, which will lead to a low data transmission rate of the terminal. Summary of the invention

[0004] The embodiments of the present application provide a cell switching method, a terminal, and a storage medium, which can avoid RLF of the terminal and improve the data transmission rate of the terminal.

[0005] The technical solution of this application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application proposes a cell switching method, which is applied to a terminal, and the method includes:

[0007] If the conditional handover CHO event of the first candidate primary cell is satisfied, determining whether the conditional primary and secondary cell addition CPA or conditional primary and secondary cell change CPC events of one or more first candidate primary and secondary cells associated with the first candidate primary cell are satisfied;

[0008] If it is determined that the CPA or CPC event of at least one of the first candidate primary and secondary cells is satisfied, switching to the first candidate primary cell and using one of the at least one first candidate primary and secondary cells for dual connectivity;

[0009] If it is determined that there is no CPA or CPC event that satisfies the first candidate primary and secondary cells, then when it is detected that the first switching scenario, the second switching scenario, or the third switching scenario is satisfied, determine the target primary cell for switching according to the switching strategy corresponding to the first switching scenario, the second switching scenario, or the third switching scenario; and switch to the target primary cell;

[0010] Among them, the first switching scenario is that the CHO event of the second candidate primary cell and the CPA or CPC events of one or more second candidate primary and secondary cells associated with the second candidate primary cell are satisfied; the second switching scenario is that the signal quality measurement value of the current serving cell is less than or equal to a preset threshold; the third switching scenario is that the duration of the CHO event of the first candidate primary cell is greater than or equal to the first duration.

[0011] In a second aspect, an embodiment of the present application provides a terminal, the terminal comprising:

[0012] a judgment unit, configured to judge whether a conditional primary and secondary cell addition CPA or conditional primary and secondary cell change CPC event of one or more first candidate primary and secondary cells associated with the first candidate primary cell is satisfied if the conditional switching CHO event of the first candidate primary cell is satisfied;

[0013] a dual connection unit, configured to, if it is determined that a CPA or CPC event of at least one of the first candidate primary and secondary cells is satisfied, switch to the first candidate primary cell and use one of the at least one first candidate primary and secondary cells for dual connection;

[0014] A determination unit, for determining a target primary cell for switching according to a switching strategy corresponding to the first switching scenario, the second switching scenario, or the third switching scenario, if it is determined that there is no CPA or CPC event satisfied for the first candidate primary and secondary cells, when it is detected that the first switching scenario, the second switching scenario, or the third switching scenario is satisfied; wherein the first switching scenario is that the CHO event of the second candidate primary cell and the CPA or CPC events of one or more second candidate primary and secondary cells associated with the second candidate primary cell are satisfied; the second switching scenario is that the signal quality measurement value of the current serving cell is less than or equal to a preset threshold; the third switching scenario is that the duration for which the CHO event of the first candidate primary cell is satisfied is greater than or equal to the first duration;

[0015] A switching unit is used to switch to the target primary cell.

[0016] In a third aspect, an embodiment of the present application proposes a terminal, which includes: a processor and a memory; when the processor executes an operating program stored in the memory, the above-mentioned cell switching method is implemented.

[0017] In a fourth aspect, an embodiment of the present application proposes a storage medium on which a computer program is stored, characterized in that the computer program implements the above-mentioned cell switching method when executed by a processor.

[0018] The embodiment of the present application provides a cell switching method, a terminal, and a storage medium, which are applied to a terminal. The method includes: if a conditional switching CHO event of a first candidate primary cell is satisfied, determining whether a conditional primary and secondary cell adding CPA or a conditional primary and secondary cell changing CPC event of one or more first candidate primary and secondary cells associated with the first candidate primary cell is satisfied; if it is determined that at least one of the CPA or CPC events of the first candidate primary and secondary cells is satisfied, switching to the first candidate primary cell and using one of the first candidate primary and secondary cells in at least one of the first candidate primary and secondary cells for dual connection; if it is determined that there is no CPA or CPC event of the first candidate primary and secondary cells satisfied, If the first switching scenario, the second switching scenario, or the third switching scenario is detected to be satisfied, the target primary cell for switching is determined according to the switching strategy corresponding to the first switching scenario, the second switching scenario, or the third switching scenario; the target primary cell is switched to; wherein the first switching scenario is that the CHO event of the second candidate primary cell and the CPA or CPC events of one or more second candidate primary and secondary cells associated with the second candidate primary cell are satisfied; the second switching scenario is that the signal quality measurement value of the current serving cell is less than or equal to the preset threshold; the third switching scenario is that the duration of the CHO event of the first candidate primary cell is greater than or equal to the first duration. Using the above implementation scheme, different solutions are proposed for the situation where the CHO event of the candidate primary cell is not synchronized with the CPA or CPC event of the candidate primary and secondary cells, so that the terminal can use dual connection or switch to the target primary cell as soon as possible without RLF, thereby improving the data transmission rate of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A flowchart of a cell switching method provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of a terminal structure provided in an embodiment of the present application Figure 1 ;

[0021] Figure 3 A schematic diagram of a terminal structure provided in an embodiment of the present application Figure 2 . DETAILED DESCRIPTION

[0022] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0024] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict. It should also be noted that the terms "first\second\third" involved in the embodiments of the present application are only used to distinguish similar objects and do not represent a specific ordering of the objects. It is understandable that "first\second\third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0025] The present application embodiment provides a cell switching method, such as Figure 1 As shown, applied to a terminal, the method may include:

[0026] S101. If a conditional handover CHO event of a first candidate primary cell is satisfied, determine whether a conditional primary and secondary cell addition CPA or conditional primary and secondary cell change CPC event of one or more first candidate primary and secondary cells associated with the first candidate primary cell is satisfied.

[0027] In some embodiments, the terminal device may be referred to as User Equipment (UE). The terminal device may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), etc. The terminal device may also be a smart phone, a tablet computer, a PDA, a Mobile Station (MS), a Mobile Terminal, etc. The terminal device may communicate with one or more network devices via a Radio Access Network (RAN). For example, the terminal device may be a mobile phone (or a "cellular" phone) or a computer with a terminal device, etc. For example, the terminal device may also be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device, which exchanges voice and / or data with a wireless access network. The terminal device may also be a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future evolving network, etc., which is not limited in the implementation of this application.

[0028] In an embodiment of the present application, the terminal also receives the CHO configuration and CPA or CPC configuration of the network device; wherein the CHO configuration corresponds to the CHO events of one or more candidate primary cells, and / or the CPA or CPC configuration corresponds to the CPA or CPC events of one or more candidate primary and secondary cells associated with each candidate primary cell.

[0029] It should be noted that, the CHO configuration also corresponds to the priorities of multiple candidate primary cells, and / or the CPA or CPC configuration also corresponds to the priorities of multiple candidate primary and secondary cells associated with each candidate primary cell.

[0030] It should be noted that after receiving the CHO configuration and CPA or CPC configuration of the network device, the terminal starts to evaluate whether the conditional switching CHO event of the candidate primary cell is satisfied and whether the CPA or CPC event of the candidate primary and secondary cells is satisfied, and executes S101.

[0031] It should be noted that if the CPA or CPC events of one or more candidate primary and secondary cells are satisfied before the CHO event of the candidate primary cell is satisfied, the terminal cannot perform CPA or CPC at this time, but needs to continue to evaluate whether the CHO event of the candidate primary cell is satisfied. Because the goal of CHO+CPA or CPC is to use dual connectivity as soon as possible after switching the primary cell, and replacing the candidate primary and secondary cells is not the goal of CHO+CPA or CPC, therefore, in this application, the terminal first determines whether the CHO event of the first candidate primary cell is satisfied, and then performs a satisfaction judgment on the CPA or CPC event of the first candidate primary and secondary cell associated with the first candidate primary cell.

[0032] S102: If it is determined that a CPA or CPC event of at least one first candidate primary and secondary cell is satisfied, switch to the first candidate primary cell and use one of the at least one first candidate primary and secondary cells for dual connectivity.

[0033] In an optional embodiment, if a CPA or CPC event of a first candidate primary and secondary cell associated with the first candidate primary cell is satisfied, switching to the first candidate primary cell is performed, and dual connectivity is achieved using the first candidate primary and secondary cell.

[0034] In another optional embodiment, if the CPA or CPC events of multiple first candidate primary and secondary cells associated with the first candidate primary cell are satisfied, the first candidate primary cell is switched to, and a first candidate primary and secondary cell is selected from the multiple first candidate primary and secondary cells to achieve dual connectivity.

[0035] Optionally, the terminal selects a first candidate primary and secondary cell from multiple first candidate primary and secondary cells to achieve dual connectivity according to a strategy such as randomness, the highest network quality measurement value, or the highest network configuration priority.

[0036] S103. If it is determined that there is no CPA or CPC event satisfied by the first candidate primary and secondary cells, then when it is detected that the first switching scenario, the second switching scenario, or the third switching scenario is satisfied, the target primary cell for switching is determined according to the switching strategy corresponding to the first switching scenario, the second switching scenario, or the third switching scenario; and switching is performed to the target primary cell.

[0037] It should be noted that S102 and S103 are two parallel steps after S101, and the specific execution order can be selected according to the actual determination result, and the embodiment of the present application does not make any specific limitation.

[0038] In an embodiment of the present application, if the terminal does not detect that the CPA or CPC event of any first candidate primary and secondary cells associated with the first candidate primary cell is satisfied, the terminal continues to evaluate the CPA or CPC of the first candidate primary and secondary cells associated with the first candidate primary cell, as well as the CHO of other candidate primary cells and the CPA or CPC of the corresponding associated candidate primary and secondary cells, until the first switching scenario, the second switching scenario or the third switching scenario is satisfied, and the primary cell switching process is executed, and optionally, a dual connection process using the primary and secondary cells can also be executed.

[0039] In an embodiment of the present application, the first switching scenario is that the CHO event of the second candidate primary cell and the CPA or CPC events of one or more second candidate primary and secondary cells associated with the second candidate primary cell are satisfied; the second switching scenario is that the signal quality measurement value of the current serving cell is less than or equal to a preset threshold; the third switching scenario is that the duration of the CHO event of the first candidate primary cell is greater than or equal to the first duration.

[0040] Optionally, the signal quality may include parameters such as Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), etc. The specific parameters can be selected according to actual conditions, and the embodiments of the present application do not make specific limitations.

[0041] For the second switching scenario, the preset threshold may be pre-configured by the network device or may be pre-defined in the protocol. The specific threshold may be selected according to actual conditions and is not specifically limited in the embodiments of the present application.

[0042] For the second switching scenario, if the terminal detects that the signal quality measurement value of the current serving cell is less than or equal to the preset threshold, it indicates that if the terminal does not perform cell switching again, there will be a RLF problem in the current serving cell. At this time, the terminal needs to directly switch to the first candidate primary cell.

[0043] It should be noted that after determining the target primary cell that satisfies the CHO event, optionally, the target primary and secondary cells associated with the target primary cell can also be determined, and the target primary and secondary cells can be used for dual connection; the target primary and secondary cells are selected from one or more first candidate primary and secondary cells, or one or more second candidate primary and secondary cells.

[0044] It should be noted that, for different switching scenarios, a candidate primary and secondary cell is selected from different candidate primary and secondary cells as the target primary and secondary cell. Specifically, for the first switching scenario and the second switching scenario, a candidate primary and secondary cell is selected from one or more second candidate primary and secondary cells as the target primary and secondary cell; for the second switching scenario, a candidate primary and secondary cell is selected from one or more first candidate primary and secondary cells as the target primary and secondary cell.

[0045] Specifically, a candidate primary and auxiliary cell is randomly selected from one or more first candidate primary and auxiliary cells, or one or more second candidate primary and auxiliary cells as the target primary and auxiliary cell; or, according to the signal quality measurement value of the candidate primary and auxiliary cell, a candidate primary and auxiliary cell is selected from one or more first candidate primary and auxiliary cells, or one or more second candidate primary and auxiliary cells as the target primary and auxiliary cell; or, according to the priority of the candidate primary and auxiliary cell configured by the network device, a candidate primary and auxiliary cell is selected from one or more first candidate primary and auxiliary cells, or one or more second candidate primary and auxiliary cells as the target primary and auxiliary cell. The specific selection can be made according to the actual situation, and the embodiments of the present application are not specifically limited.

[0046] Preferably, a candidate primary and secondary cell with the highest signal quality measurement value is selected from one or more first candidate primary and secondary cells or one or more second candidate primary and secondary cells as the target primary and secondary cell.

[0047] Preferably, a candidate primary and secondary cell with the highest priority is selected from one or more first candidate primary and secondary cells or one or more second candidate primary and secondary cells as the target primary and secondary cell.

[0048] For the embodiment under the second handover scenario, when it is detected that the second handover scenario is met, the first candidate primary cell is determined as the target primary cell according to the handover strategy corresponding to the second handover scenario.

[0049] Optionally, for the embodiment in the second switching scenario, a candidate primary and secondary cell may be selected from one or more first candidate primary and secondary cells as the target primary and secondary cell to achieve dual connectivity.

[0050] For the embodiment under the third handover scenario, when it is detected that the third handover scenario is met, the second candidate primary cell is determined as the target primary cell according to the handover strategy corresponding to the third handover scenario.

[0051] Optionally, for the embodiment under the third switching scenario, a candidate primary and secondary cell may be selected from one or more first candidate primary and secondary cells as the target primary and secondary cell to achieve dual connectivity.

[0052] It should be noted that the process of selecting a candidate primary and auxiliary cell as the target primary and auxiliary cell from one or more first candidate primary and auxiliary cells can be to randomly select a candidate primary and auxiliary cell as the target primary and auxiliary cell from one or more first candidate primary and auxiliary cells; or, according to the signal quality measurement values ​​of one or more first candidate primary and auxiliary cells, select a candidate primary and auxiliary cell as the target primary and auxiliary cell from one or more first candidate primary and auxiliary cells; or, according to the priority of one or more first candidate primary and auxiliary cells configured by the network device, select a candidate primary and auxiliary cell as the target primary and auxiliary cell from one or more first candidate primary and auxiliary cells. The specific selection can be made according to the actual situation, and the embodiments of the present application do not make specific limitations.

[0053] Based on the above embodiment, when it is detected that the CHO event of the third candidate primary cell is satisfied within the first duration, a candidate primary cell is selected from the first candidate primary cell and the third candidate primary cell as the target primary cell.

[0054] Optionally, a candidate primary cell may be randomly selected from the first candidate primary cell and the third candidate primary cell as the target primary cell; or, according to the signal quality measurement value of the first candidate primary cell and the signal quality measurement value of the third candidate primary cell, a candidate primary cell may be selected from the first candidate primary cell and the third candidate primary cell as the target primary cell; or, according to the priorities of multiple candidate primary cells configured by the network device, a candidate primary cell may be selected from the first candidate primary cell and the third candidate primary cell as the target primary cell. The specific selection may be made according to the actual situation, and the embodiments of the present application do not make specific limitations.

[0055] Preferably, a candidate primary cell with the highest signal quality measurement value is selected from the first candidate primary cell and the third candidate primary cell as the target primary cell.

[0056] Preferably, a candidate primary cell with the highest priority is selected from the first candidate primary cell and the third candidate primary cell as the target primary cell.

[0057] Optionally, after selecting a candidate primary cell from the first candidate primary cell and the third candidate primary cell as the target primary cell, a candidate primary secondary cell may be selected from one or more candidate primary secondary cells associated with the target primary cell as the target primary secondary cell to achieve dual connectivity.

[0058] It should be noted that if the first candidate primary cell is selected as the target primary cell, a candidate primary and secondary cell is selected from one or more first candidate primary and secondary cells as the target primary and secondary cell; if the third candidate primary cell is selected as the target primary cell, a candidate primary and secondary cell is selected from one or more third candidate primary and secondary cells as the target primary and secondary cell.

[0059] It should be noted that the CPA or CPC events of one or more third candidate primary and secondary cells associated with the third candidate primary cell may not be satisfied.

[0060] For the embodiment under the first switching scenario, when it is detected that the first switching scenario is met, the characterization terminal can use dual connectivity immediately after switching to the second candidate primary cell, and the second candidate primary cell is determined as the target primary cell according to the switching strategy corresponding to the first switching scenario.

[0061] Optionally, for the embodiment in the first switching scenario, a second candidate primary and secondary cell may be determined from one or more second candidate primary and secondary cells as the target primary and secondary cell to achieve dual connectivity.

[0062] It should be noted that the present application does not make any specific limitation on the order of satisfying the CHO event of the second candidate primary cell and the CPA or CPC events of one or more second candidate primary and secondary cells. The specific order can be selected according to actual conditions, and the embodiments of the present application do not make any specific limitation.

[0063] Based on the above embodiment, optionally, when it is detected that the first switching scenario is met and the number of second candidate primary and secondary cells is more than one, that is, before the CHO event of the second candidate primary cell is met, there are multiple CPA or CPC events of second candidate primary and secondary cells associated with the second candidate primary cell that are met; at this time, according to the switching strategy corresponding to the first switching scenario, the second candidate primary cell is determined to be the target primary cell, and a second candidate primary and secondary cell is selected from the multiple second candidate primary and secondary cells as the target primary and secondary cell.

[0064] It is understandable that different solutions are proposed for the situation where the CHO event of the candidate primary cell is not synchronized with the CPA or CPC event of the candidate primary and secondary cells, so that the terminal can use dual connection or switch to the target primary cell as soon as possible without RLF, thereby improving the data transmission rate of the terminal.

[0065] Based on the above embodiment, a terminal 1 is proposed, such as Figure 2 As shown, the terminal 1 includes:

[0066] The judging unit 10 is configured to judge whether a conditional primary and secondary cell addition CPA or conditional primary and secondary cell change CPC event of one or more first candidate primary and secondary cells associated with the first candidate primary cell is satisfied if the conditional switching CHO event of the first candidate primary cell is satisfied;

[0067] The dual connection unit 11 is used to switch to the first candidate primary cell and use one of the at least one first candidate primary and secondary cells for dual connection if it is determined that the CPA or CPC event of at least one of the first candidate primary and secondary cells is satisfied.

[0068] A determination unit 12 is configured to determine the target primary cell for switching according to the switching strategy corresponding to the first switching scenario, the second switching scenario, or the third switching scenario if it is determined that there is no CPA or CPC event satisfied for the first candidate primary and secondary cells, and when it is detected that the first switching scenario, the second switching scenario, or the third switching scenario is satisfied; wherein the first switching scenario is that the CHO event of the second candidate primary cell and the CPA or CPC events of one or more second candidate primary and secondary cells associated with the second candidate primary cell are satisfied; the second switching scenario is that the signal quality measurement value of the current serving cell is less than or equal to a preset threshold; the third switching scenario is that the duration for which the CHO event of the first candidate primary cell is satisfied is greater than or equal to the first duration;

[0069] The switching unit 13 is configured to switch to the target primary cell.

[0070] Optionally, the terminal further includes: a receiving unit;

[0071] The receiving unit is used to receive the CHO configuration and CPA or CPC configuration of the network device; wherein the CHO configuration corresponds to the CHO events of one or more candidate primary cells, and / or the CPA or CPC configuration corresponds to the CPA or CPC events of one or more candidate primary and secondary cells associated with each candidate primary cell.

[0072] Optionally, the CHO configuration further configures priorities of multiple candidate primary cells, and / or the CPA or CPC configuration further configures priorities of multiple candidate primary and secondary cells associated with each candidate primary cell.

[0073] Optionally, the determining unit 12 is further configured to determine, when detecting that the second switching scenario is met, that the first candidate primary cell is the target primary cell according to a switching policy corresponding to the second switching scenario.

[0074] Optionally, the determining unit 12 is further configured to determine, when detecting that the third switching scenario is met, that the second candidate primary cell is the target primary cell according to a switching policy corresponding to the third switching scenario.

[0075] Optionally, the terminal further includes: a selection unit;

[0076] The selection unit is configured to select a candidate primary cell from the first candidate primary cell and the third candidate primary cell as the target primary cell when it is detected that a CHO event of the third candidate primary cell is satisfied within the first duration.

[0077] Optionally, the selection unit is also used to randomly select a candidate primary cell from the first candidate primary cell and the third candidate primary cell as the target primary cell; or, according to the signal quality measurement value of the first candidate primary cell and the signal quality measurement value of the third candidate primary cell, select a candidate primary cell from the first candidate primary cell and the third candidate primary cell as the target primary cell; or, according to the priorities of multiple candidate primary cells configured by the network device, select a candidate primary cell from the first candidate primary cell and the third candidate primary cell as the target primary cell.

[0078] Optionally, the determining unit 12 is further configured to determine, when detecting that the first switching scenario is met, that the second candidate primary cell is the target primary cell according to a switching policy corresponding to the first switching scenario.

[0079] Optionally, the determination unit 12 is also used to determine that the second candidate primary cell is the target primary cell according to the switching strategy corresponding to the first switching scenario when it is detected that the first switching scenario is met and the number of the second candidate primary and secondary cells is multiple, and select a second candidate primary and secondary cell from multiple second candidate primary and secondary cells as the target primary and secondary cell.

[0080] Optionally, the dual connection unit 11 is also used to determine a target primary and secondary cell associated with the target primary cell, and use the target primary and secondary cell for dual connection; the target primary and secondary cell is selected from one or more of the first candidate primary and secondary cells, or one or more of the second candidate primary and secondary cells.

[0081] Optionally, the selection unit is also used to randomly select a candidate primary and secondary cell from one or more of the first candidate primary and secondary cells, or one or more of the second candidate primary and secondary cells as the target primary and secondary cell; or, according to the signal quality measurement value of the candidate primary and secondary cells, select a candidate primary and secondary cell from one or more of the first candidate primary and secondary cells, or one or more of the second candidate primary and secondary cells as the target primary and secondary cell; or, according to the priority of the candidate primary and secondary cells configured by the network device, select a candidate primary and secondary cell from one or more of the first candidate primary and secondary cells, or one or more of the second candidate primary and secondary cells as the target primary and secondary cell.

[0082] A terminal provided in an embodiment of the present application, if a conditional switching CHO event of a first candidate primary cell is satisfied, then determining whether a conditional primary and secondary cell adding CPA or a conditional primary and secondary cell changing CPC event of one or more first candidate primary and secondary cells associated with the first candidate primary cell is satisfied; if it is determined that there is at least one CPA or CPC event of the first candidate primary and secondary cells satisfied, then switching to the first candidate primary cell and using one of the first candidate primary and secondary cells for dual connection; if it is determined that there is no CPA or CPC event of the first candidate primary and secondary cells satisfied, then, when it is detected that the first switching scenario, the second switching scenario, or the third switching scenario is satisfied, determining a target primary cell for switching according to a switching strategy corresponding to the first switching scenario, the second switching scenario, or the third switching scenario; switching to the target primary cell; wherein the first switching scenario is that the CHO event of the second candidate primary cell and the CPA or CPC events of one or more second candidate primary and secondary cells associated with the second candidate primary cell are satisfied; the second switching scenario is that the signal quality measurement value of the current serving cell is less than or equal to a preset threshold; the third switching scenario is that the duration of the satisfaction of the CHO event of the first candidate primary cell is greater than or equal to the first duration. It can be seen that the terminal proposed in this embodiment proposes different solutions for the situation where the CHO event of the candidate primary cell is not synchronized with the CPA or CPC event of the candidate primary and secondary cells, so that the terminal can use dual connection or switch to the target primary cell as soon as possible without RLF, thereby improving the data transmission rate of the terminal.

[0083] Figure 3 A schematic diagram of the structure of a terminal 1 provided in an embodiment of the present application Figure 2 In practical applications, based on the same disclosure concept of the above embodiments, Figure 3 As shown, the terminal 1 of this embodiment includes: a processor 14 , a memory 15 and a communication bus 16 .

[0084] In the process of a specific embodiment, the processor 16 may be at least one of an application-specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing image processing device (DSPD), a programmable logic image processing device (PLD), a field programmable gate array (FPGA), a CPU, a controller, a microcontroller, and a microprocessor. It is understandable that for different devices, the electronic device used to implement the function of the processor may also be other, which is not specifically limited in this embodiment.

[0085] In the embodiment of the present application, the communication bus 16 is used to realize the connection communication between the processor 14 and the memory 15; when the processor 14 executes the running program stored in the memory 15, the following cell switching method is implemented:

[0086] If the conditional switching CHO event of the first candidate primary cell is satisfied, determine whether the conditional primary and secondary cell adding CPA or conditional primary and secondary cell changing CPC events of one or more first candidate primary and secondary cells associated with the first candidate primary cell are satisfied; if it is determined that there is at least one CPA or CPC event of the first candidate primary and secondary cells satisfied, switch to the first candidate primary cell and use one of the first candidate primary and secondary cells in at least one of the first candidate primary and secondary cells for dual connection; if it is determined that there is no CPA or CPC event of the first candidate primary and secondary cells satisfied, then when it is detected that the first switching scenario or the second switching scenario or the third switching scenario is satisfied, determine the target primary cell for switching according to the switching strategy corresponding to the first switching scenario or the second switching scenario or the third switching scenario; switch to the target primary cell; wherein the first switching scenario is that the CHO event of the second candidate primary cell and the CPA or CPC events of one or more second candidate primary and secondary cells associated with the second candidate primary cell are satisfied; the second switching scenario is that the signal quality measurement value of the current serving cell is less than or equal to the preset threshold; the third switching scenario is that the duration of the CHO event of the first candidate primary cell is greater than or equal to the first duration.

[0087] Furthermore, the above-mentioned processor 14 is also used to receive the CHO configuration and CPA or CPC configuration of the network device; wherein the CHO configuration corresponds to the CHO events of one or more candidate primary cells, and / or the CPA or CPC configuration corresponds to the CPA or CPC events of one or more candidate primary and secondary cells associated with each candidate primary cell.

[0088] Furthermore, the CHO configuration also configures priorities of multiple candidate primary cells, and / or the CPA or CPC configuration also configures priorities of multiple candidate primary and secondary cells associated with each candidate primary cell.

[0089] Furthermore, the processor 14 is further configured to, when detecting that the second switching scenario is satisfied, determine that the first candidate primary cell is the target primary cell according to a switching policy corresponding to the second switching scenario.

[0090] Furthermore, the processor 14 is further configured to, when detecting that the third switching scenario is satisfied, determine that the second candidate primary cell is the target primary cell according to a switching policy corresponding to the third switching scenario.

[0091] Furthermore, the processor 14 is further configured to select a candidate primary cell from the first candidate primary cell and the third candidate primary cell as the target primary cell when it is detected that a CHO event of the third candidate primary cell is satisfied within the first duration.

[0092] Further, the above-mentioned processor 14 is also used to randomly select a candidate primary cell from the first candidate primary cell and the third candidate primary cell as the target primary cell; or, according to the signal quality measurement value of the first candidate primary cell and the signal quality measurement value of the third candidate primary cell, select a candidate primary cell from the first candidate primary cell and the third candidate primary cell as the target primary cell; or, according to the priorities of multiple candidate primary cells configured by the network device, select a candidate primary cell from the first candidate primary cell and the third candidate primary cell as the target primary cell.

[0093] Furthermore, the processor 14 is further configured to, when detecting that the first switching scenario is satisfied, determine that the second candidate primary cell is the target primary cell according to a switching policy corresponding to the first switching scenario.

[0094] Furthermore, the above-mentioned processor 14 is also used to determine that the second candidate primary cell is the target primary cell according to the switching strategy corresponding to the first switching scenario when it is detected that the first switching scenario is met and the number of the second candidate primary and secondary cells is more than one, and select a second candidate primary and secondary cell from multiple second candidate primary and secondary cells as the target primary and secondary cell.

[0095] Furthermore, the processor 14 is further configured to determine a target primary and secondary cell associated with the target primary cell, and use the target primary and secondary cell for dual connection; the target primary and secondary cell is selected from one or more of the first candidate primary and secondary cells, or one or more of the second candidate primary and secondary cells.

[0096] Further, the above-mentioned processor 14 is also used to randomly select a candidate primary and secondary cell from one or more of the first candidate primary and secondary cells, or one or more of the second candidate primary and secondary cells as the target primary and secondary cell; or, according to the signal quality measurement value of the candidate primary and secondary cells, select a candidate primary and secondary cell from one or more of the first candidate primary and secondary cells, or one or more of the second candidate primary and secondary cells as the target primary and secondary cell; or, according to the priority of the candidate primary and secondary cells configured by the network device, select a candidate primary and secondary cell from one or more of the first candidate primary and secondary cells, or one or more of the second candidate primary and secondary cells as the target primary and secondary cell.

[0097] An embodiment of the present application provides a storage medium having a computer program stored thereon. The computer-readable storage medium stores one or more programs. The one or more programs can be executed by one or more processors and applied to a terminal. The computer program implements the cell switching method as described above.

[0098] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0099] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present disclosure, or the part that contributes to the relevant technology, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for enabling an image display device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present disclosure.

[0100] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A cell switching method, characterized in that: Applied to a terminal, the method comprises: If the conditional handover CHO event of the first candidate primary cell is satisfied, determining whether the conditional primary and secondary cell addition CPA or conditional primary and secondary cell change CPC events of one or more first candidate primary and secondary cells associated with the first candidate primary cell are satisfied; If it is determined that the CPA or CPC event of at least one of the first candidate primary and secondary cells is satisfied, switching to the first candidate primary cell and using one of the at least one first candidate primary and secondary cells for dual connectivity; If it is determined that there is no CPA or CPC event that satisfies the first candidate primary and secondary cells, then when it is detected that the first switching scenario, the second switching scenario, or the third switching scenario is satisfied, determine the target primary cell for switching according to the switching strategy corresponding to the first switching scenario, the second switching scenario, or the third switching scenario; and switch to the target primary cell; Among them, the first switching scenario is that the CHO event of the second candidate primary cell and the CPA or CPC events of one or more second candidate primary and secondary cells associated with the second candidate primary cell are satisfied; the second switching scenario is that the signal quality measurement value of the current serving cell is less than or equal to a preset threshold; the third switching scenario is that the duration of the CHO event of the first candidate primary cell is greater than or equal to the first duration.

2. The method according to claim 1, characterized in that The method further comprises: Receive the CHO configuration and CPA or CPC configuration of the network device; wherein the CHO configuration corresponds to the CHO events of one or more candidate primary cells, and / or the CPA or CPC configuration corresponds to the CPA or CPC events of one or more candidate primary and secondary cells associated with each candidate primary cell.

3. The method according to claim 2, characterized in that The CHO configuration also configures priorities of multiple candidate primary cells, and / or the CPA or CPC configuration also configures priorities of multiple candidate primary and secondary cells associated with each candidate primary cell.

4. The method according to claim 1, characterized in that: The method further comprises: When it is detected that the second switching scenario is met, the first candidate primary cell is determined as the target primary cell according to a switching policy corresponding to the second switching scenario.

5. The method according to claim 1, characterized in that The method further comprises: When it is detected that the third switching scenario is met, the second candidate primary cell is determined as the target primary cell according to a switching policy corresponding to the third switching scenario.

6. The method according to claim 1, characterized in that The method further comprises: When it is detected that the CHO event of the third candidate primary cell is satisfied within the first duration, a candidate primary cell is selected from the first candidate primary cell and the third candidate primary cell as the target primary cell.

7. The method according to claim 6, characterized in that The method further comprises: Randomly select a candidate primary cell from the first candidate primary cell and the third candidate primary cell as the target primary cell; or, selecting a candidate primary cell from the first candidate primary cell and the third candidate primary cell as the target primary cell according to the signal quality measurement value of the first candidate primary cell and the signal quality measurement value of the third candidate primary cell; Alternatively, according to the priorities of multiple candidate primary cells configured by the network device, one candidate primary cell is selected from the first candidate primary cell and the third candidate primary cell as the target primary cell.

8. The method according to claim 1, characterized in that The method further comprises: When it is detected that the first switching scenario is met, the second candidate primary cell is determined as the target primary cell according to a switching policy corresponding to the first switching scenario.

9. The method according to claim 1, characterized in that: The method further comprises: When it is detected that the first switching scenario is met and the number of the second candidate primary and secondary cells is more than one, the second candidate primary cell is determined as the target primary cell according to the switching strategy corresponding to the first switching scenario, and a second candidate primary and secondary cell is selected from multiple second candidate primary and secondary cells as the target primary and secondary cell.

10. The method according to claim 1, characterized in that The method further comprises: A target primary and secondary cell associated with the target primary cell is determined, and the target primary and secondary cell is used for dual connectivity; the target primary and secondary cell is selected from one or more of the first candidate primary and secondary cells, or one or more of the second candidate primary and secondary cells.

11. The method according to claim 10, characterized in that The method further comprises: Randomly selecting a candidate primary and secondary cell from one or more of the first candidate primary and secondary cells, or one or more of the second candidate primary and secondary cells as the target primary and secondary cell; Alternatively, according to the signal quality measurement values ​​of the candidate primary and secondary cells, selecting a candidate primary and secondary cell from one or more of the first candidate primary and secondary cells or one or more of the second candidate primary and secondary cells as the target primary and secondary cell; Alternatively, according to the priorities of the candidate primary and secondary cells configured by the network device, one candidate primary and secondary cell is selected from one or more of the first candidate primary and secondary cells or one or more of the second candidate primary and secondary cells as the target primary and secondary cell.

12. A terminal, characterized in that: The terminal comprises: a judgment unit, configured to judge whether a conditional primary and secondary cell addition CPA or conditional primary and secondary cell change CPC event of one or more first candidate primary and secondary cells associated with the first candidate primary cell is satisfied if the conditional switching CHO event of the first candidate primary cell is satisfied; a dual connection unit, configured to, if it is determined that a CPA or CPC event of at least one of the first candidate primary and secondary cells is satisfied, switch to the first candidate primary cell and use one of the at least one first candidate primary and secondary cells for dual connection; A determination unit, for determining a target primary cell for switching according to a switching strategy corresponding to the first switching scenario, the second switching scenario, or the third switching scenario, if it is determined that there is no CPA or CPC event satisfied for the first candidate primary and secondary cells, when it is detected that the first switching scenario, the second switching scenario, or the third switching scenario is satisfied; wherein the first switching scenario is that the CHO event of the second candidate primary cell and the CPA or CPC events of one or more second candidate primary and secondary cells associated with the second candidate primary cell are satisfied; the second switching scenario is that the signal quality measurement value of the current serving cell is less than or equal to a preset threshold; the third switching scenario is that the duration for which the CHO event of the first candidate primary cell is satisfied is greater than or equal to the first duration; A switching unit is used to switch to the target primary cell.

13. A terminal, characterized in that: The terminal includes: a processor and a memory; when the processor executes the running program stored in the memory, the method according to any one of claims 1 to 11 is implemented.

14. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 11 is implemented.

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