Condition switching information processing method and device, terminal and equipment

Abstract

The invention provides a condition switching information processing method and device, a terminal and equipment. The method comprises the step of sending failure information of conditional switching of a conditional candidate secondary cell group to network side equipment, wherein the failure information is used for determining a failure type of conditional switching of the conditional candidate secondary cell group. In the present application, for the conditional switching of the conditional candidate secondary cell group, the terminal reports the failure information of the conditional switching to the network side device, so that the network side device can determine the failure type of the conditional switching of the conditional candidate secondary cell group based on the failure information, thereby performing corresponding mobility configuration for the determined failure type. The more accurate MRO is realized, the switching success rate is improved, and the network index is improved.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an information processing method, apparatus, terminal and device for condition switching. Background Technology

[0002] During a conditional handover with a conditional candidate secondary cell group (CHO+candidate SCG), the primary cell group (MCG) may fail and the SCG may fail sequentially, or only one of these failures may occur. After an MCG failure, the primary cell (PCell) that the user equipment (UE) reconnects to may be the original PCell, the target PCell, or another PCell. From the perspective of the MCG, this may be a handover that is too late, a handover that is too early, or a handover to the wrong cell. Similarly, after an SCG failure, depending on the primary secondary cell (PSCell) of the newly selected secondary cell group, it may be a handover that is too late, a handover that is too early, or a handover to the wrong PSCell cell.

[0003] Due to the existence of various possible handover failure scenarios, the network side cannot determine the failure type of the CHO+candidate SCG process, and the mobility failure problem of the CHO+candidate SCG process cannot be resolved by existing methods. Summary of the Invention

[0004] The purpose of this application is to provide an information processing method, apparatus, terminal and device for condition switching, which solves the mobility failure problem in the CHO+candidate SCG process.

[0005] Embodiments of this application provide an information processing method for condition switching, applied to a terminal, including:

[0006] The failure information of conditional handover of the conditional candidate secondary cell group is sent to the network-side equipment. The failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0007] Optionally, the failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group, including one of the following:

[0008] The failure information of the first failure is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group;

[0009] Failure information of MCG failure is used to determine the failure type of conditional handover of the conditional candidate secondary cell group;

[0010] Failure information for either MCG or SCG failures is used to determine the failure type of the conditional handover for the conditional candidate secondary cell group.

[0011] Optionally, the failure type includes at least one of the following:

[0012] The conditional handover of the conditional candidate secondary cell group was executed too late;

[0013] The conditional handover of the conditional candidate auxiliary cell group was executed too early;

[0014] The conditions of the candidate auxiliary cell group with conditions were applied to the wrong cell.

[0015] Optionally, send failure information for conditional handover with conditional candidate secondary cell group to the network-side equipment, including one of the following:

[0016] During the conditional handover process of the conditional candidate secondary cell group, the failure information of the first failure is reported to the network-side device;

[0017] During the conditional handover process of the conditional candidate secondary cell group, only the failure information of MCG failure is reported to the network-side device;

[0018] During the conditional handover process of the conditional candidate secondary cell group, failure information of MCG failure or SCG failure is reported to the network side device according to the instruction information of the network side device.

[0019] Optionally, the method further includes:

[0020] Send first information to the network-side device, the first information being used to determine whether to configure conditional handover with conditional candidate secondary cell group;

[0021] The first information includes at least one of the following:

[0022] Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the primary cell PSCell of the secondary cell group;

[0023] Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met;

[0024] Information on when the PSCell execution conditions are met, and information on whether the PCell execution conditions are met if the PSCell execution conditions are met.

[0025] Measurement results when PCell execution conditions are met;

[0026] Measurement results when PSCell execution conditions are met;

[0027] The first identification information is used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met;

[0028] The second identification information is used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met;

[0029] The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met;

[0030] The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

[0031] Optionally, conditional handover of the conditional candidate secondary cell group shall not be configured in at least one of the following cases:

[0032] There is no overlap between the PCell switching area and the PSCell switching area;

[0033] The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap.

[0034] The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group;

[0035] Conditional handover cannot be configured for the conditional candidate secondary cell group;

[0036] Configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed.

[0037] Optionally, the definition of "conditional handover of the conditional candidate secondary cell group is too late" includes one of the following:

[0038] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on measurements, which is a different PSCell from the source PSCell.

[0039] The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs, and the new PSCell selected is a different PSCell from the source PSCell.

[0040] The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG radio link failure (RLF) occurs, and the terminal re-establishes a connection in a cell different from the source PCell.

[0041] The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal experiences MCG RLF after a second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

[0042] Optionally, the definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following:

[0043] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the third time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is the source PSCell.

[0044] If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within the fourth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on the source PCell.

[0045] Optionally, the definition of conditional execution to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following:

[0046] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the fifth time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is another PSCell that is different from the source PSCell and different from the target PSCell.

[0047] If a conditional handover with a conditional candidate secondary cell group fails, or if an MCG RLF occurs within six hours after the conditional handover with the conditional candidate secondary cell group is successfully executed, the terminal will re-establish a connection on another PCell that is different from both the source PCell and the target PCell.

[0048] Embodiments of this application provide an information processing method for conditional switching, applied to a network-side device, comprising:

[0049] Receive terminal sending conditional handover failure information for conditional candidate secondary cell groups;

[0050] Based on the failure information, determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0051] Optionally, based on the failure information, the failure type of the conditional handover of the conditional candidate secondary cell group is determined, including one of the following:

[0052] Based on the failure information of the first failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group;

[0053] Based on the failure information of the MCG failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group;

[0054] Based on the failure information of MCG failure or SCG failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0055] Optionally, the failure type includes at least one of the following:

[0056] The conditional handover of the conditional candidate secondary cell group was executed too late;

[0057] The conditional handover of the conditional candidate auxiliary cell group was executed too early;

[0058] The conditions of the candidate auxiliary cell group with conditions were applied to the wrong cell.

[0059] Optionally, the method further includes:

[0060] The first message sent by the receiving terminal;

[0061] Based on the first information, determine whether to configure conditional handover of conditional candidate secondary cell groups;

[0062] The first information includes at least one of the following:

[0063] Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the primary cell PSCell of the secondary cell group;

[0064] Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met;

[0065] Information on when the PSCell execution conditions are met, and information on whether the PCell execution conditions are met if the PSCell execution conditions are met.

[0066] Measurement results when PCell execution conditions are met;

[0067] Measurement results when PSCell execution conditions are met;

[0068] The first identification information is used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met;

[0069] The second identification information is used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met;

[0070] The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met;

[0071] The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

[0072] Optionally, determining whether to configure conditional handover with conditional candidate secondary cell groups based on the first information includes:

[0073] Based on the first information, it is determined that conditional handover of the conditional candidate secondary cell group will not be configured under at least one of the following conditions:

[0074] There is no overlap between the PCell switching area and the PSCell switching area;

[0075] The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap.

[0076] The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group;

[0077] Conditional handover cannot be configured for the conditional candidate secondary cell group;

[0078] Configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed.

[0079] Optionally, the definition of "conditional handover of the conditional candidate secondary cell group is too late" includes one of the following:

[0080] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on measurements, which is a different PSCell from the source PSCell.

[0081] The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs, and the new PSCell selected is a different PSCell from the source PSCell.

[0082] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG RLF occurs, and the terminal re-establishes a connection in a cell different from the source PCell.

[0083] The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal experiences MCG RLF after a second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

[0084] Optionally, the definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following:

[0085] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the third time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is the source PSCell.

[0086] If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within the fourth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on the source PCell.

[0087] Optionally, the definition of conditional execution to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following:

[0088] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the fifth time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is another PSCell that is different from the source PSCell and different from the target PSCell.

[0089] If a conditional handover with a conditional candidate secondary cell group fails, or if an MCG RLF occurs within six hours after the conditional handover with the conditional candidate secondary cell group is successfully executed, the terminal will re-establish a connection on another PCell that is different from both the source PCell and the target PCell.

[0090] Embodiments of this application provide a terminal, including: a memory, a transceiver, and a processor.

[0091] A memory for storing computer programs; a transceiver for receiving and sending data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0092] The failure information of conditional handover of the conditional candidate secondary cell group is sent to the network-side equipment. The failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0093] Optionally, the failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group, including one of the following:

[0094] The failure information of the first failure is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group;

[0095] Failure information of MCG failure is used to determine the failure type of conditional handover of the conditional candidate secondary cell group;

[0096] Failure information for either MCG or SCG failures is used to determine the failure type of the conditional handover for the conditional candidate secondary cell group.

[0097] Optionally, the failure type includes at least one of the following:

[0098] The conditional handover of the conditional candidate secondary cell group was executed too late;

[0099] The conditional handover of the conditional candidate auxiliary cell group was executed too early;

[0100] The conditions of the candidate auxiliary cell group with conditions were applied to the wrong cell.

[0101] Optionally, the processor is configured to read the computer program in the memory and perform one of the following operations:

[0102] During the conditional handover process of the conditional candidate secondary cell group, the failure information of the first failure is reported to the network-side device;

[0103] During the conditional handover process of the conditional candidate secondary cell group, only the failure information of MCG failure is reported to the network-side device;

[0104] During the conditional handover process of the conditional candidate secondary cell group, failure information of MCG failure or SCG failure is reported to the network side device according to the instruction information of the network side device.

[0105] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0106] Send first information to the network-side device, the first information being used to determine whether to configure conditional handover with conditional candidate secondary cell group;

[0107] The first information includes at least one of the following:

[0108] Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the primary cell PSCell of the secondary cell group;

[0109] Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met;

[0110] Information on when the PSCell execution conditions are met, and information on whether the PCell execution conditions are met if the PSCell execution conditions are met.

[0111] Measurement results when PCell execution conditions are met;

[0112] Measurement results when PSCell execution conditions are met;

[0113] The first identification information is used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met;

[0114] The second identification information is used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met;

[0115] The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met;

[0116] The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

[0117] Optionally, conditional handover of the conditional candidate secondary cell group shall not be configured in at least one of the following cases:

[0118] There is no overlap between the PCell switching area and the PSCell switching area;

[0119] The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap.

[0120] The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group;

[0121] Conditional handover cannot be configured for the conditional candidate secondary cell group;

[0122] Configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed.

[0123] Optionally, the definition of "conditional handover of the conditional candidate secondary cell group is too late" includes one of the following:

[0124] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on measurements, which is a different PSCell from the source PSCell.

[0125] The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs, and the new PSCell selected is a different PSCell from the source PSCell.

[0126] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG RLF occurs, and the terminal re-establishes a connection in a cell different from the source PCell.

[0127] The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal experiences MCG RLF after a second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

[0128] Optionally, the definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following:

[0129] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the third time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is the source PSCell.

[0130] If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within the fourth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on the source PCell.

[0131] Optionally, the definition of conditional execution to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following:

[0132] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the fifth time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is another PSCell that is different from the source PSCell and different from the target PSCell.

[0133] If a conditional handover with a conditional candidate secondary cell group fails, or if an MCG RLF occurs within six hours after the conditional handover with the conditional candidate secondary cell group is successfully executed, the terminal will re-establish a connection on another PCell that is different from both the source PCell and the target PCell.

[0134] Embodiments of this application provide a network-side device, including: a memory, a transceiver, and a processor.

[0135] A memory for storing computer programs; a transceiver for receiving and sending data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0136] Receive terminal sending conditional handover failure information for conditional candidate secondary cell groups;

[0137] Based on the failure information, determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0138] Optionally, the processor is configured to read the computer program in the memory and perform one of the following operations:

[0139] Based on the failure information of the first failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group;

[0140] Based on the failure information of the MCG failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group;

[0141] Based on the failure information of MCG failure or SCG failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0142] Optionally, the failure type includes at least one of the following:

[0143] The conditional handover of the conditional candidate secondary cell group was executed too late;

[0144] The conditional handover of the conditional candidate auxiliary cell group was executed too early;

[0145] The conditions of the candidate auxiliary cell group with conditions were applied to the wrong cell.

[0146] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0147] The first message sent by the receiving terminal;

[0148] Based on the first information, determine whether to configure conditional handover of conditional candidate secondary cell groups;

[0149] The first information includes at least one of the following:

[0150] Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the primary cell PSCell of the secondary cell group;

[0151] Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met;

[0152] Information on when the PSCell execution conditions are met, and information on whether the PCell execution conditions are met if the PSCell execution conditions are met.

[0153] Measurement results when PCell execution conditions are met;

[0154] Measurement results when PSCell execution conditions are met;

[0155] The first identification information is used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met;

[0156] The second identification information is used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met;

[0157] The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met;

[0158] The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

[0159] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0160] Based on the first information, it is determined that conditional handover of the conditional candidate secondary cell group will not be configured under at least one of the following conditions:

[0161] There is no overlap between the PCell switching area and the PSCell switching area;

[0162] The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap.

[0163] The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group;

[0164] Conditional handover cannot be configured for the conditional candidate secondary cell group;

[0165] Configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed.

[0166] Optionally, the definition of "conditional handover of the conditional candidate secondary cell group is too late" includes one of the following:

[0167] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on measurements, which is a different PSCell from the source PSCell.

[0168] The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs, and the new PSCell selected is a different PSCell from the source PSCell.

[0169] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG RLF occurs, and the terminal re-establishes a connection in a cell different from the source PCell.

[0170] The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal experiences MCG RLF after a second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

[0171] Optionally, the definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following:

[0172] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the third time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is the source PSCell.

[0173] If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within the fourth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on the source PCell.

[0174] Optionally, the definition of conditional execution to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following:

[0175] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the fifth time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is another PSCell that is different from the source PSCell and different from the target PSCell.

[0176] If a conditional handover with a conditional candidate secondary cell group fails, or if an MCG RLF occurs within six hours after the conditional handover with the conditional candidate secondary cell group is successfully executed, the terminal will re-establish a connection on another PCell that is different from both the source PCell and the target PCell.

[0177] Embodiments of this application provide an information processing apparatus for condition switching, comprising:

[0178] The first sending unit is used to send failure information of conditional handover of the conditional candidate secondary cell group to the network-side equipment. The failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0179] Embodiments of this application provide an information processing apparatus for condition switching, comprising:

[0180] The first receiving unit is used to receive the failure information of conditional handover of conditional candidate secondary cell group sent by the terminal;

[0181] The first determining unit is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group based on the failure information.

[0182] Embodiments of this application provide a processor-readable storage medium having a computer program stored thereon, the program being used to cause the processor to execute the above-described conditional switching information processing method.

[0183] The beneficial effects of the above-mentioned technical solution of this application are:

[0184] In embodiments of this application, for conditional handover of a conditional candidate secondary cell group, the terminal reports the failure information of the conditional handover to the network-side device, enabling the network-side device to determine the failure type of the conditional handover of the conditional candidate secondary cell group based on the failure information, thereby performing corresponding mobility configuration for the determined failure type, achieving more accurate MRO, improving the handover success rate, and enhancing network indicators. Attached Figure Description

[0185] Figure 1 A schematic diagram showing the control surface structure of a dual-connection system;

[0186] Figure 2 One of the flowcharts illustrating the information processing method for condition switching in an embodiment of this application;

[0187] Figure 3 This is a schematic diagram illustrating a switching scenario according to an embodiment of this application;

[0188] Figure 4 A second flowchart illustrating the information processing method for condition switching in an embodiment of this application;

[0189] Figure 5 One of the schematic diagrams illustrating the structure of the information processing apparatus for condition switching according to an embodiment of this application;

[0190] Figure 6 A second schematic diagram illustrating the structure of the information processing device for condition switching according to an embodiment of this application;

[0191] Figure 7 A schematic diagram illustrating the structure of the terminal according to an embodiment of this application;

[0192] Figure 8 This is a schematic diagram illustrating the structure of a network-side device according to an embodiment of this application. Detailed Implementation

[0193] To make the technical problems, technical solutions, and advantages of this application clearer, a detailed description will be provided below in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as particular configurations and components are provided merely to aid in a comprehensive understanding of the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0194] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0195] In the various embodiments of this application, it should be understood that the sequence number of each process described below does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0196] In the embodiments of this application, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0197] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0198] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0199] In describing the embodiments of this application, some concepts used in the following description will first be explained.

[0200] I. Multi-Radio Dual Connectivity (MR-DC) Network Architecture.

[0201] In a multi-connectivity architecture, a user equipment (UE) may connect to a master node (MN) and one or more secondary nodes (SNs), and interact with these network nodes for signaling and / or data exchange. Both the MN and SN nodes can be Long Term Evolution (LTE) / e-LTE / New Radio (NR) nodes. When there is one MN node and one SN node, it is referred to as a dual-connectivity DC.

[0202] When a UE is in connected mode, it can connect to one or more network-side nodes, which can be based on one or more Radio Access Technologies (RATs). For example, when MN is an LTE node and SN is an NR node, it is (NG)EN-DC dual connectivity; when MN is an NR node and SN is an LTE node, it is NE-DC dual connectivity; when both MN and SN are NR nodes, it is NR-NR-DC.

[0203] Dual-connection control surface structure such as Figure 1 As shown. A Secondary Cell Group (SCG) is a serving cell group under the SN node in MR-DC, which includes one PSCell and one or more Scells that may exist.

[0204] II. Enhanced Mobility

[0205] CHO (Conditional Synchronization Reconfiguration) refers to the network side issuing a synchronization reconfiguration command to the terminal in advance. After receiving the conditional synchronization reconfiguration command, the terminal does not immediately initiate the synchronization reconfiguration process in the target cell as in the traditional synchronization reconfiguration process. Instead, it first saves the configuration in the synchronization reconfiguration command and only initiates the synchronization reconfiguration process in the target cell after the conditions configured in the synchronization reconfiguration command are met. A conditional synchronization reconfiguration command allows configuring the synchronization reconfiguration configuration of one or more target cells.

[0206] To ensure optimal access to a suitable PSCell during CHO execution, the NR Mobility project discussed Conditional Handover with Conditional Candidate Secondary Cell Groups (CHO+candidate SCG). This means that when configuring CHO, multiple candidate PSCell configurations can be configured for each candidate PCell. If a candidate PCell configuration is associated with multiple candidate PSCell configurations, the network can provide multiple CHO configurations for that candidate PCell, each corresponding to a different candidate SCG configuration. The network reconfigures the execution conditions for both the associated PCell and PSCell for each conditional PCell configuration. Only when both PCell and PSCell execution conditions are met will the UE execute the CHO+candidate SCG configuration and access the candidate target PCell and PSCell. Otherwise, the UE does not execute the CHO+candidate SCG and continues to evaluate.

[0207] III. Mobility Robustness Optimisation (MRO).

[0208] MRO (Mechanical Resource Recovery) is primarily used to address failures during terminal mobility and assist in network optimization. When a handover failure or RLF (Radio Link Failure) occurs, the terminal measures and records the measured frequencies, as well as information related to random access, handover, and re-establishment. After a handover failure, the terminal performs cell selection and then re-establishes or re-accesses the network via Radio Resource Control (RRC) connection re-establishment or RRC connection establishment. The terminal notifies the network that it retains information about the radio link failure or handover failure, which the network can retrieve from the terminal when needed for network optimization.

[0209] IV. RLF report and air interface SCG failure information message.

[0210] If a radio link failure or handover failure occurs in the MCG, the UE generates an RLF report; if a radio link failure or PSCell addition / transformation failure occurs in the SCG, the UE sends an SCG failure information message to the MN node.

[0211] Embodiments of this application provide a method, apparatus, terminal, and device for processing information on condition switching, in order to solve the mobility failure problem in the CHO+candidate SCG process.

[0212] The method and apparatus are based on the same concept of the application. Since the methods and apparatus solve problems in similar ways, the implementation of the apparatus and methods can refer to each other, and the repeated parts will not be described again.

[0213] like Figure 2 As shown, an embodiment of this application provides an information processing method for condition switching, applied to a terminal, specifically including the following steps:

[0214] Step 201: Send failure information of conditional handover (CHO+candidateSCG) of the conditional candidate secondary cell group to the network-side device. The failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0215] In this embodiment, if a handover failure occurs during the execution of CHO+candidate SCG, the terminal sends failure information to the network-side device. The failure may include MCG failure and / or SCG failure, and the failure information may include information related to the MCG failure and / or SCG failure. The MCG failure may include a radio link failure and / or handover failure on the MCG, such as a PCell handover failure or an RLF on the MCG; the SCG failure may include a radio link failure on the SCG and / or a synchronization reconfiguration failure on the SCG, such as a PSCell addition failure, a PSCell transition failure, or an RLF on the SCG.

[0216] The failure information can be used to determine the failure type of CHO+candidate SCG, or it can be understood as the failure information used to define the failure type of CHO+candidate SCG. For example, network-side devices can determine (or define) the type of failure that occurred during the CHO+candidate SCG process based on the failure information, and thus perform MRO for the determined failure type to achieve targeted optimization and more accurately solve mobility problems.

[0217] In embodiments of this application, for conditional handover of a conditional candidate secondary cell group, the terminal reports the failure information of the conditional handover to the network-side device, enabling the network-side device to determine the failure type of the conditional handover of the conditional candidate secondary cell group based on the failure information, thereby performing corresponding mobility configuration for the determined failure type, achieving more accurate MRO, improving the handover success rate, and enhancing network indicators.

[0218] Optionally, the failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group, including one of the following:

[0219] (1) The failure information of the first failure is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group;

[0220] In this embodiment, the "first failure" refers to, for example, the failure that occurs first after the terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group, such as MCG failure first and SCG failure first. For example, if the terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group and then experiences MCG failure first, followed by SCG failure, then the first failure refers to MCG failure; as another example, if the terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group and then experiences SCG failure first, followed by MCG failure, then the first failure refers to SCG failure.

[0221] In this scenario, the terminal can report only the failure information of the first failure to the network-side device, and the network-side device can determine the failure type of the CHO+candidate SCG based on the failure information of the first failure. Optionally, the terminal can also report the failure information of each subsequent failure, but the network-side device will only determine the failure type of the CHO+candidate SCG based on the failure information of the first failure.

[0222] (2) Failure information of MCG failure, used to determine the failure type of conditional handover of the conditional candidate secondary cell group;

[0223] In this embodiment, the terminal may only report the failure information of MCG failure to the network-side device, and the network-side device determines the failure type of CHO+candidate SCG based on the failure information of MCG failure; alternatively, the terminal may also report the failure information of each failure, but the network-side device determines the failure type of CHO+candidateSCG only based on the failure information of MCG failure.

[0224] For example: If the CHO+candidate SCG process fails with an MCG failure, the terminal reports the MCG failure information to the network-side device. If an SCG failure subsequently occurs, the terminal may choose not to send the SCG failure information or to do so. As another example: If the CHO+candidate SCG process fails with an SCG failure, the terminal may choose not to report the SCG failure information to the network-side device. If an MCG failure subsequently occurs, the terminal may then report the MCG failure information to the network-side device.

[0225] (3) Failure information of MCG failure or failure information of SCG failure, used to determine the failure type of conditional handover of the conditional candidate secondary cell group.

[0226] In this embodiment, the terminal may send only the MCG failure information, only the SCG failure information, or both MCG and SCG failure information to the network-side device. The network-side device can determine the failure type of CHO+candidate SCG based on either the MCG failure information or the SCG failure information. The network-side device can choose which type of information to use to determine the failure type.

[0227] Optionally, send failure information for conditional handover with conditional candidate secondary cell group to the network-side equipment, including one of the following:

[0228] 1) During the conditional handover process of the conditional candidate secondary cell group, report the failure information of the first failure to the network-side device;

[0229] In this embodiment, the terminal sends the failure information of the first failure to the network-side device. For example, if the MCG failure occurs first, the UE reports an RLF report. If the SCG failure occurs later, the UE can choose not to send the SCG failure information message.

[0230] For example, if an SCG failure occurs first, the UE sends an SCG failure information message. If an MCG failure occurs later, the UE can choose not to generate an RLF report.

[0231] The network-side device determines the failure type of CHO+candidate SCG based on the first failure message sent by the terminal.

[0232] 2) During the conditional handover process of the conditional candidate secondary cell group, only the failure information of MCG failure is reported to the network-side device;

[0233] In this embodiment, the terminal may send only the failure information for MCG failure to the network-side device, without sending the failure information for SCG failure. For example, for a failure occurring during the CHO+candidate SCG process, the terminal only sends the RLF report recorded after the MCG failure, and does not send the SCG failure information message after the SCG failure. The network-side device determines the failure type of CHO+candidate SCG based on the failure information for the MCG failure.

[0234] 3) During the conditional handover process of the conditional candidate secondary cell group, according to the instruction information of the network-side device, report the failure information of MCG failure or SCG failure to the network-side device.

[0235] In this embodiment, the network-side device can choose which type of failure information to use to determine the failure type. The network-side device can indicate the required failure information to the terminal, and the terminal will then report the corresponding failure information according to the network-side indication. For example, the network-side device can send either MCG or SCG indication information to the UE. If the UE receives MCG indication information, it will only send the RLF report recorded after an MCG failure, and will not send an SCG failure information message after an SCG failure. If the UE receives SCG indication information, it will only send an SCG failure information message after an SCG failure, and will not record an RLF report after an MCG failure.

[0236] As an optional embodiment, the failure type includes at least one of the following:

[0237] (1) The conditional handover of the conditional candidate auxiliary cell group is executed too late; it can also be understood as the CHO+candidate SCG is executed too late.

[0238] (2) The conditional handover of the conditional candidate auxiliary cell group was executed too early; it can also be understood as the premature execution of CHO+candidate SCG.

[0239] (3) The conditions of the candidate auxiliary cell group with conditions are applied to the wrong cell.

[0240] In this embodiment, during the execution of CHO+candidate SCG, either MCG failure or SCG failure may occur, or both of the above failures may occur. The terminal reports the failure information during the execution of CHO+candidate SCG to the network-side device. The network-side device can determine the failure type of CHO+candidate SCG as any of the above based on the failure information. For example, the network-side device determines the failure type of CHO+candidate SCG as any of the above based on the failure information of the first failure, or the network-side device determines the failure type of CHO+candidate SCG as any of the above based on the failure information of the MCG failure, or the network-side device determines the failure type of CHO+candidate SCG as any of the above based on the failure information of the SCG failure.

[0241] Optionally, the definition of "conditional handover of the conditional candidate secondary cell group is too late" includes one of the following:

[0242] 11) The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on the measurement, which is a different PSCell from the source PSCell.

[0243] In this embodiment, the execution of CHO+candidate SCG too late or a delayed CHO+candidate SCG can be defined as follows: the UE receives the CHO+candidate SCG configuration, and before the execution conditions are met, the SCG RLF occurs, and the appropriate PSCell selected based on measurement is another PSCell different from the source PSCell. The SCG RLF occurs first, and the MCG RLF may or may not fail afterward.

[0244] 12) The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs. The new PSCell selected is a different PSCell from the source PSCell.

[0245] In this embodiment, the description of delayed CHO+candidate SCG execution or delayed CHO+candidate SCG execution can be reused from the description of delayed secondary cell group (PSCell) addition and modification (CPAC) execution. For example, after the terminal has been stably camped on the source PSCell cell for a period of time, an SCG failure occurs, and the newly selected suitable PSCell is not the source PSCell. Alternatively, a description can be added to the description of delayed CPAC execution: This description also applies to CHO+candidate SCG; or, a description can be added to the description of delayed CPAC execution: The UE receives the CHO+candidate SCG configuration, and the SCG RLF occurs before the CHO+candidate SCG execution conditions are met; or, a description can be added to the description of delayed CPAC execution: The SCG RLF occurs first, and the MCG RLF may or may not occur afterward.

[0246] This embodiment does not limit the specific duration of the first time, which refers to the duration for which the terminal resides in the source PSCell.

[0247] 13) The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG RLF occurs, and the terminal re-establishes a connection in a cell different from the source PCell.

[0248] In this embodiment, a delayed or excessively late CHO+candidate SCG execution can be defined as follows: The UE receives the CHO+candidate SCG configuration, and before the execution conditions are met, an MCG RLF occurs, and the UE attempts to establish a connection in a cell different from the original PCell. The MCG RLF occurs first, and the SCG RLF may or may not occur afterward.

[0249] 14) The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal performs MCGRLF after the second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

[0250] In this embodiment, the description of delayed handover for CHO+candidate SCG execution can be reused. For example, after the terminal has been stably camped in the source cell for a period of time, a radio link failure occurs, and the terminal attempts to establish a connection in a different cell. Alternatively, the description of delayed handover can be supplemented with: this description also applies to CHO+candidate SCG; or, the description of delayed handover can be supplemented with: CHO+candidate SCG has been configured before the connection failure occurs but execution has not been triggered; or, the description of delayed handover can be supplemented with: MCG RLF occurs first, and SCG RLF may or may not occur afterward.

[0251] This embodiment does not limit the specific duration of the second time, which represents the duration for which the terminal resides in the source cell.

[0252] Optionally, the definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following:

[0253] 21) In the case of performing conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or the PSCell access fails, or the SCG fails within the third time after the conditional handover of the conditional candidate secondary cell group is successfully performed, the appropriate PSCell selected by the terminal based on the measurement is the source PSCell.

[0254] In this embodiment, premature or early execution of CHO+candidate SCG can be defined as: PSCell access failure during CHO+candidate SCG execution or SCG RLF occurring shortly after successful CHO+candidate SCG execution, and the appropriate PSCell selected based on measurement is the source PSCell.

[0255] When CHO+candidate SCG is executed, PSCell connection fails. At this time, PCell connection may or may not succeed. After CHO+candidate SCG is executed successfully, SCG RLF will occur first, and MCG RLF may or may not occur afterward.

[0256] This embodiment does not limit the specific length of the third time. The third time refers to the duration from the execution of the conditional switch to the occurrence of SCG failure, or it can be understood as the duration from the start of the conditional switch to the occurrence of SCG failure.

[0257] Alternatively, the description of premature CHO+candidate SCG execution can be reused, for example: during PSCell transition, the terminal fails to access the target PSCell cell, or access to the target PSCell cell is successful but SCG failure occurs shortly afterward, and the newly selected suitable PSCell is the source PSCell. Alternatively, the description of premature CPAC execution can be expanded to include: this description also applies to CHO+candidate SCG; or, the description of premature CPAC execution can be expanded to include: CHO+candidate SCG execution fails, or PSCell access fails, or SCG RLF occurs shortly after successful CHO+candidate SCG execution; or, the description of premature CPAC execution can be expanded to include: SCG RLF occurs first, and MCG RLF may or may not occur afterward.

[0258] 22) If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if MCG RLF occurs within the fourth time after successful conditional handover of the conditional candidate secondary cell group, the terminal re-establishes a connection in the source PCell.

[0259] In this embodiment, premature or excessively early execution of CHO+candidate SCG can be defined as follows: PCell access fails during CHO+candidate SCG execution, or MCG RLF occurs shortly after successful CHO+candidate SCG execution, and the UE attempts to establish a connection in the original PCell cell. If PCell access fails during CHO+candidate SCG execution, PSCell access may or may not succeed.

[0260] After CHO+candidate SCG is executed successfully, MCG RLF will occur first, and SCG RLF may or may not occur afterward.

[0261] Alternatively, the description of premature handover can be reused for CHO+candidate SCG execution prematurely or too early CHO+candidate SCG execution. For example: during the handover process, the terminal fails to access the target cell, or successfully accesses the target cell but soon experiences a radio link failure, and the terminal attempts to establish a connection in the source cell. Alternatively, the description of premature handover can be supplemented by adding: this description also applies to CHO+candidate SCG; or, the description of premature handover can be supplemented by adding: CHO+candidate SCG execution fails, or handover fails, or RLF occurs soon after successful CHO+candidate SCG execution; or, the description of premature handover can be supplemented by adding: MCG RLF occurs first, and SCG RLF may or may not occur afterward.

[0262] This embodiment does not limit the specific length of the fourth time. The fourth time represents the duration from the execution of the conditional switch to the occurrence of MCG failure, or it can be understood as the duration from the start of the conditional switch to the occurrence of MCG failure.

[0263] Optionally, the definition of conditional execution to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following:

[0264] 31) In the case of performing conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or the PSCell access fails, or the SCG fails within the fifth time after the conditional handover of the conditional candidate secondary cell group is successfully performed, the appropriate PSCell selected by the terminal based on the measurement is another PSCell that is different from the source PSCell and different from the target PSCell.

[0265] In this embodiment, the condition execution to the wrong cell in the conditional candidate secondary cell group can be defined as follows: PSCell access fails when CHO+candidate SCG is executed, or SCGRLF occurs shortly after CHO+candidate SCG is executed successfully. The suitable PSCell selected based on measurements is another cell that is neither the source PSCell nor the target PSCell. When PSCell access fails during CHO+candidate SCG execution, PCell access may or may not succeed. Shortly after successful CHO+candidate SCG execution, SCG RLF occurs first, followed by MCG RLF, which may or may not occur.

[0266] Alternatively, the definition of conditional execution to the wrong cell in the conditional candidate secondary cell group can reuse the description of CPAC execution to the wrong PSCell. For example, during PSCell transition, if the terminal fails to access the target PSCell cell, or successfully accesses the target PSCell cell but SCG failure occurs shortly afterward, the newly selected suitable PSCell is another PSCell cell that is neither the target PSCell cell nor the source PSCell cell. Alternatively, based on the description of CPAC execution to the wrong PSCell, add the description: This description also applies to CHO+candidate SCG; or, based on the description of CPAC execution to the wrong PSCell, add the description: CHO+candidate SCG execution fails, or PSCell access fails, or SCG RLF occurs shortly after CHO+candidate SCG execution succeeds; or, based on the description of CPAC execution to the wrong PSCell, add the description: SCG RLF occurs first, and MCG RLF may or may not occur afterward.

[0267] This embodiment does not limit the specific length of the fifth time. The fifth time represents the duration from the execution of the conditional switch to the occurrence of SCG failure, or it can be understood as the duration from the start of the conditional switch to the occurrence of SCG failure.

[0268] 32) If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within six hours after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on another PCell that is different from the source PCell and different from the target PCell.

[0269] In this embodiment, the condition execution to the wrong cell in the conditional candidate secondary cell group can be defined as follows: PCell access fails when CHO+candidate SCG is executed, or MCGRLF occurs shortly after CHO+candidate SCG is executed successfully, and the UE attempts to establish a connection in another cell that is neither the original PCell nor the target PCell. If PCell access fails when CHO+candidate SCG is executed, PSCell access may or may not succeed. If CHO+candidate SCG is executed successfully, MCG RLF occurs shortly afterward, and SCG RLF may or may not occur afterward.

[0270] Alternatively, the definition of conditional execution to the wrong cell in the conditional candidate secondary cell group can also reuse the description of handover to the wrong cell. For example: during the handover process, the terminal fails to access the target cell, or successfully accesses the target cell but a radio link failure occurs shortly afterward, and the terminal attempts to establish a connection in a cell different from the handover target cell and the source cell. Alternatively, based on the description of handover to the wrong cell, add the description: this description also applies to CHO+candidateSCG; or, based on the description of handover to the wrong cell, add the description: CHO+candidate SCG execution fails, or handover fails, or an RLF occurs shortly after CHO+candidate SCG execution succeeds; or, based on the description of handover to the wrong cell, add the description: MCG RLF occurs first, and SCG RLF may or may not occur afterward.

[0271] This embodiment does not limit the specific length of the sixth time. The sixth time represents the duration from the execution of the conditional switch to the occurrence of MCG failure, or it can be understood as the duration from the start of the conditional switch to the occurrence of MCG failure.

[0272] As an optional embodiment, the method further includes:

[0273] Send first information to the network-side device, the first information being used to determine whether to configure conditional handover with conditional candidate secondary cell group;

[0274] The first information includes at least one of the following:

[0275] 1) Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the secondary cell group's primary cell PSCell;

[0276] In this embodiment, the terminal can send the PCell trigger condition fulfillment time information and the PSCell trigger condition fulfillment time information to the network-side device. Optionally, a PCell trigger condition fulfillment time list can be used for recording, where each node in the list includes the start time and end time of fulfilling the condition. Similarly, a PSCell trigger condition fulfillment time list can be used for recording, where each node in the list includes the start time and end time of fulfilling the condition.

[0277] 2) Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met;

[0278] In this embodiment, the terminal can also record whether the PSCell trigger condition is met each time the PCell trigger condition is met, and send the recorded information to the network-side device.

[0279] 3) Information on the timing of PSCell execution conditions being met, and information on whether PCell execution conditions are met when PSCell execution conditions are met;

[0280] In this embodiment, the terminal can also record whether the PSCell trigger condition is met each time the PCell trigger condition is met, and send the recorded information to the network-side device.

[0281] 4) Measurement results when the PCell execution conditions are met;

[0282] In this embodiment, the terminal can record the measurement results and report the measurement results to the network-side device when the PCell trigger condition is met.

[0283] 5) Measurement results when the PSCell execution conditions are met;

[0284] In this embodiment, the terminal can record the measurement results and report the measurement results to the network-side device when the PSCell trigger condition is met.

[0285] 6) First identification information, used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met;

[0286] In this embodiment, the terminal records and reports the first identification information to the network side, indicating that the PCell trigger condition and the PSCell trigger condition have not been met simultaneously.

[0287] 7) Second identification information, used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met;

[0288] In this embodiment, the terminal records and reports the second identification information to the network side, indicating that within the time period when the PCell trigger condition is met, the measurement result of the relevant candidate PSCell is lower than a threshold value. The first value is not limited here and can be configured, pre-configured, or pre-defined by the network side device.

[0289] 8) The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met;

[0290] In this embodiment, the terminal records and reports third identification information to the network side, indicating that within the time period when the PSCell trigger condition is met, the measurement result of the relevant candidate PCell is lower than a threshold value. The second value is not limited here and can be configured, pre-configured, or pre-defined by the network-side device.

[0291] The first value and / or the second value can be the aforementioned threshold values, which can be traditional measurement threshold values, such as s-MeasureConfig in measurement configuration, a5-Threshold2 in ReportConfig, a4-Threshold, etc.

[0292] 9) Fourth identification information, used to indicate that the PCell handover area and the PSCell handover area have no common coverage area. In this embodiment, the terminal records and reports the fourth identification information to the network side, indicating that the PCell and PSCell have no common coverage area.

[0293] In this embodiment, after receiving the failure information reported by the terminal, the network-side device can optimize the configuration of CHO+candidate SCG based on the failure information. However, in some cases, the failure type determined by the network-side device may be incorrect, and even if the configuration is optimized, the mobility failure problem cannot be solved. Therefore, in these cases, the network-side device does not configure or optimize the conditional handover of the conditional candidate secondary cell group. To assist the network-side device in identifying these cases, the terminal reports at least one of the first pieces of information to the network-side device.

[0294] Optionally, conditional handover of the conditional candidate secondary cell group shall not be configured in at least one of the following cases:

[0295] There is no overlap between the PCell switching area and the PSCell switching area;

[0296] The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap.

[0297] The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group;

[0298] Conditional handover of the conditional candidate secondary cell group cannot be configured; or it can be understood that the configuration optimization of CHO+candidate SCG should not be performed.

[0299] The configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed, or it can be understood that the configuration optimization of CHO+candidate SCG should not be performed.

[0300] In this embodiment, the terminal reports first information to the network-side device. If the network-side device identifies at least one of the aforementioned situations based on the first information, it will not configure or optimize the conditional handover of the conditional candidate secondary cell group. In other cases, it can optimize the configuration of the conditional handover of the conditional candidate secondary cell group, thereby resolving the mobility failure problem. The "whether to configure the conditional handover of the conditional candidate secondary cell group" mentioned in this embodiment can also be understood as whether the network-side device optimizes the configuration of the conditional handover of the conditional candidate secondary cell group after receiving the failure information reported by the terminal.

[0301] In embodiments of this application, after receiving the failure information of conditional handover of the conditional candidate secondary cell group reported by the terminal and the first information, the network-side device can exclude the case where the conditional handover is not configured for optimization. In other cases, it can determine the failure type and perform corresponding optimizations. For example, for the error type of CHO+candidate SCG execution that is too late, the parameters can be optimized to make the CHO+candidate SCG execution conditions easier to meet, achieving the goal of advancing the execution time point; for the error type of CHO+candidate SCG execution that is too early, the parameters can be optimized to make the CHO+candidate SCG execution conditions more difficult to meet, achieving the goal of delaying the execution time point; for the error type of CHO+candidate SCG execution to the wrong cell, the parameters can be optimized to make it easier for CHO+candidate SCG to select the target candidate PCell and PSCell, or the target PCell and PSCell may not be in the candidate cell list and need to be added to the candidate cell list.

[0302] The following example illustrates the implementation process of the information processing method for condition switching in an embodiment of this application.

[0303] Example 1: Taking the determination of the failure type of the conditional handover of the conditional candidate secondary cell group based on the failure information of the first failure as an example.

[0304] During the CHO+candidate SCG process, there may be only one failure (MCG failure or SCG failure), or two failures (MCG failure first followed by SCG failure, or SCG failure first followed by MCG failure). The advantage of defining the failure according to the first occurrence is that the processing is simple. The UE can report the failure information only once during a CHO+candidate SCG process, and the network-side equipment can start analysis immediately after receiving the failure information without needing to pay attention to whether subsequent failures occur.

[0305] The problem-solving approach is as follows: even if only the first failed optimization was performed, there's a possibility that a second failure might not have been analyzed and addressed. However, subsequent CHO+candidate SCG processes (potentially other UEs) may also fail, allowing for further handling later. By resolving parts of the problem each time, the entire optimization process can eventually be completed.

[0306] The definition of the CHO+candidate SCG issue based on the first occurrence of the failure type is as follows:

[0307] (1) The CHO+candidate SCG is executed too late or the CHO+candidate SCG is executed too late, which may be due to one of the following:

[0308] 11) When the UE receives the CHO+candidate SCG configuration, the SCG RLF occurs before the execution conditions are met. The appropriate PSCell selected based on the measurement is a different PSCell from the source PSCell. The SCG RLF occurs first, and the MCG RLF may fail or not occur afterward.

[0309] 12) Description of reusing delayed CPAC execution. The description of delayed CPAC execution is as follows: After the terminal has been stably camped on the source PSCell cell for a period of time, an SCG failure occurs, and the newly selected suitable PSCell is not the source PSCell.

[0310] Alternatively, based on the description of delayed CPAC execution, the following description can be added: This description also applies to CHO+candidate SCG; Alternatively, the following description can be added: When the UE receives the CHO+candidate SCG configuration, the SCG RLF occurs before the CHO+candidate SCG execution conditions are met; Alternatively, the following description can be added: The SCG RLF occurs first, and the MCG RLF may fail or not occur afterward.

[0311] 13) When the UE receives the CHO+candidate SCG configuration, before the execution conditions are met, the MCG RLF occurs, and the UE attempts to establish a connection in a cell different from the original PCell. The MCG RLF occurs first, and the SCG RLF may or may not occur afterward.

[0312] 14) Description of delayed handover. Delayed handover is described as follows: After the terminal has been stably camped in the source cell for a period of time, a radio link failure occurs, and the terminal attempts to establish a connection in a different cell.

[0313] You can also add a description to the description of delayed switching: This description also applies to CHO+candidateSCG. Alternatively, you can add: CHO+candidate SCG was configured before the connection failure occurred, but execution was not triggered. You can also add: MCG RLF occurs first, and SCG RLF may or may not occur afterward.

[0314] (2) Premature execution of CHO+candidate SCG or premature execution of CHO+candidate SCG may be due to one of the following:

[0315] 21) If PSCell connection fails during CHO+candidate SCG execution, or if SCG RLF occurs shortly after successful CHO+candidate SCG execution, the appropriate PSCell selected based on the measurement is the source PSCell. If PSCell connection fails during CHO+candidate SCG execution, PCell connection may or may not occur. If SCG RLF occurs shortly after successful CHO+candidate SCG execution, MCG RLF may or may not occur afterward.

[0316] 22) Reuse the description of premature CPAC execution. The description of premature CPAC execution is: during PSCell transition, the terminal fails to access the target PSCell cell, or successfully accesses the target PSCell cell but quickly experiences SCG failure; the newly selected suitable PSCell is the source PSCell. Alternatively, the description of premature CPAC execution can be expanded to include: this description also applies to CHO+candidate SCG; or the description can be expanded to: CHO+candidate SCG execution fails, or PSCell access fails, or SCG RLF occurs quickly after successful CHO+candidate SCG execution; or the description can be expanded to: SCG RLF occurs first, after which MCG RLF may or may not occur.

[0317] 23) If PCell access fails during CHO+candidate SCG execution, or if MCG RLF occurs shortly after successful CHO+candidate SCG execution, the UE attempts to establish a connection in the original PCell's cell. If PCell access fails during CHO+candidate SCG execution, PSCell access may or may not succeed. If MCG RLF occurs shortly after successful CHO+candidate SCG execution, SCG RLF may or may not occur afterward.

[0318] 24) Reuse the description of premature handover. Premature handover is described as follows: During the handover process, the terminal fails to access the target cell, or successfully accesses the target cell but soon experiences a radio link failure, and the terminal attempts to establish a connection in the source cell. Alternatively, the description of premature handover can be expanded to include: This description also applies to CHO+candidate SCG. Another description can be added: CHO+candidate SCG execution fails, or handover fails, or an RLF occurs shortly after successful CHO+candidate SCG execution. A further description can be added: MCG RLF occurs first, followed by SCG RLF, which may or may not occur.

[0319] (3) CHO+candidate SCG was executed in the wrong cell, which may be one of the following:

[0320] 31) If PSCell access fails during CHO+candidate SCG execution, or if SCG RLF occurs shortly after successful CHO+candidate SCG execution, the appropriate PSCell selected based on measurements is another cell that is neither the source PSCell nor the target PSCell. If PSCell access fails during CHO+candidate SCG execution, PCell access may or may not occur. If SCG RLF occurs shortly after successful CHO+candidate SCG execution, MCG RLF may or may not occur afterward.

[0321] 32) Reuse the description of CPAC execution reaching an incorrect PSCell. The description of CPAC execution reaching an incorrect PSCell is: During PSCell transition, the terminal fails to access the target PSCell cell, or successfully accesses the target PSCell cell but quickly experiences an SCG failure. The newly selected suitable PSCell is a PSCell cell that is neither the target nor the source PSCell cell. Alternatively, the description of CPAC execution reaching an incorrect PSCell can be expanded to include: This description also applies to CHO+candidate SCG. Another description can be added: CHO+candidate SCG execution fails, or PSCell access fails, or an SCG RLF occurs quickly after successful CHO+candidate SCG execution. A further description can be added: SCG RLF occurs first, after which MCG RLF may or may not occur.

[0322] 33) If PCell access fails during CHO+candidate SCG execution, or if MCG RLF occurs shortly after successful CHO+candidate SCG execution, the UE attempts to establish a connection in a cell other than the original PCell and the target PCell. If PCell access fails during CHO+candidate SCG execution, PSCell access may or may not succeed. If MCG RLF occurs shortly after successful CHO+candidate SCG execution, SCG RLF may or may not occur afterward.

[0323] 34) Reuse the description of handover to the wrong cell. The description of handover to the wrong cell is: During the handover process, the terminal fails to access the target cell, or successfully accesses the target cell but a radio link failure occurs shortly afterward, and the terminal attempts to establish a connection in a cell different from both the target and source cells. Alternatively, the description of handover to the wrong cell can be expanded to include: This description also applies to CHO+candidate SCG. Another description can be added: CHO+candidate SCG execution fails, or handover fails, or an RLF occurs shortly after successful CHO+candidate SCG execution. A further description can be added: MCG RLF occurs first, followed by SCG RLF, which may or may not occur.

[0324] The detection mechanism corresponding to the above failure types can be based on the above problem definition, adding the use of a UE reporting timer to determine the length of the dwell time, for example:

[0325] When the CHO+candidate SCG is executed too late, the UE reports that the timer is empty or greater than the configured threshold value, which indicates a long dwell time.

[0326] Premature execution of CHO+candidate SCG or execution of CHO+candidate SCG to the wrong cell will cause the UE to report that the timer is less than the configured threshold value, which is used to indicate a short dwell time.

[0327] After a failure, the UE's actions in attempting to establish a connection to the access cell include: first attempting to re-establish the access cell, and / or attempting to re-establish the connection to the access cell, and / or attempting to recover the access cell via CHO;

[0328] From a user experience (UE) perspective:

[0329] If an MCG failure occurs first, the UE reports an RLF report. If an SCG failure occurs next, the UE can choose not to send an SCG failure information message.

[0330] If an SCG failure occurs first, the UE sends an SCG failure information message. If an MCG failure occurs next, the UE can choose not to generate an RLF report.

[0331] From the perspective of network-side device processing:

[0332] When the network-side device receives an SCG failure information message or an RLF report, it first analyzes whether the analysis for this handover of the UE has been processed before. If it has not been processed, it analyzes and processes the SCG failure information message or RLF report received this time. If it has been processed, it does not need to be processed this time.

[0333] Example 2: Taking the failure type of conditional handover of the conditional candidate secondary cell group as an example, based on the failure information of the MCG failure.

[0334] During the CHO+candidate SCG process, MCG failure and SCG failure may occur sequentially. Based on the idea of ​​defining failure types according to MCG failure, the importance of MCG connection is greater than that of SCG. Therefore, when both MCG and SCG failures occur simultaneously, the problem of MCG failure should be resolved first.

[0335] (A) The CHO+candidate SCG is executed too late, or the CHO+candidate SCG is executed too late, which may be due to one of the following:

[0336] A1) If the UE receives the CHO+candidate SCG configuration and an MCG RLF failure occurs before the execution conditions are met, the UE attempts to establish a connection in a cell different from the original PCell. The SCG RLF may or may not occur before or after the MCG RLF.

[0337] A2) Description of delayed handover. Delayed handover is described as follows: After the terminal has been stably camped in the source cell for a period of time, a radio link failure occurs, and the terminal attempts to establish a connection in a different cell.

[0338] You can also add a description to the description of delayed switching: This description also applies to CHO+candidateSCG. You can also add a description: CHO+candidate SCG was configured before the connection failure occurred but execution was not triggered. You can also add a description: SCG RLF may or may not occur before or after MCG RLF occurs.

[0339] (B) Premature execution of CHO+candidate SCG or premature execution of CHO+candidate SCG may be due to one of the following:

[0340] B1) If PCell access fails during CHO+candidate SCG execution, or if MCG RLF occurs shortly after successful CHO+candidate SCG execution, the UE attempts to establish a connection in the original PCell cell. If PCell access fails during CHO+candidate SCG execution, PSCell access may or may not succeed. If MCG RLF occurs shortly after successful CHO+candidate SCG execution, SCG RLF may or may not occur before or after the MCG RLF.

[0341] B2) Reuse the description of premature handover. Premature handover is described as follows: During the handover process, the terminal fails to access the target cell, or successfully accesses the target cell but soon experiences a radio link failure, and the terminal attempts to establish a connection in the source cell. Alternatively, the following descriptions can be added to the premature handover description: This description also applies to CHO+candidate SCG; or the following descriptions can be added: CHO+candidate SCG execution fails, or handover fails, or an RLF occurs shortly after successful CHO+candidate SCG execution; or the following description can be added: PCell access fails during CHO+candidate SCG execution, in which case PSCell may or may not access successfully.

[0342] (C)CHO+candidate SCG was executed in the wrong cell, which may be one of the following:

[0343] C1) If PCell access fails during CHO+candidate SCG execution, or if MCG RLF occurs shortly after successful CHO+candidate SCG execution, the UE attempts to establish a connection in a cell other than the original PCell and the target PCell. If PCell access fails during CHO+candidate SCG execution, PSCell access may or may not succeed. If MCG RLF occurs shortly after successful CHO+candidate SCG execution, SCG RLF may or may not occur before or after the MCG RLF.

[0344] C2) Reuse the description of handover to the wrong cell. The description of handover to the wrong cell is: During the handover process, the terminal fails to access the target cell, or successfully accesses the target cell but a radio link failure occurs shortly afterward, and the terminal attempts to establish a connection in a cell different from both the target and source cells. Alternatively, the following description can be added to the description of handover to the wrong cell: This description also applies to CHO+candidate SCG; The following description can also be added: CHO+candidate SCG execution fails, or handover fails, or an RLF occurs shortly after successful CHO+candidate SCG execution; The following description can also be added: MCG RLF occurs shortly after successful CHO+candidate SCG execution; SCG RLF may or may not occur before or after the MCG RLF.

[0345] The detection mechanism corresponding to the above failure types can be based on the above problem definition, adding the use of a UE reporting timer to determine the length of the dwell time, for example:

[0346] When the CHO+candidate SCG is executed too late, the UE reports that the timer is empty or greater than the configured threshold value, which indicates a long dwell time.

[0347] Premature execution of CHO+candidate SCG or execution of CHO+candidate SCG to the wrong cell will cause the UE to report that the timer is less than the configured threshold value, which is used to indicate a short dwell time.

[0348] After a failure, the UE's attempts to establish a connection to the access cell include: first attempting to re-establish the access cell, and / or attempting to re-establish the connection to the access cell, and / or attempting to recover the access cell via CHO.

[0349] From the UE's perspective: The UE only sends the RLF report recorded after the MCG failure, and does not send the SCG failure information message after the SCG failure.

[0350] From the perspective of network-side device processing: network-side devices only receive, analyze, and process RLF reports, and no longer analyze SCG failure information messages.

[0351] Example 3: Taking the network-side device as an example, the failure type of the conditional handover of the conditional candidate secondary cell group is determined based on the failure information of the MCG failure or the failure information of the SCG failure.

[0352] In Example 2, defining the failure type based solely on the failure information of MCG failure can resolve scenarios where MCG and SCG fail sequentially. However, if only SCG failure occurs, the network-side device will miss the opportunity for optimization and adjustment. Therefore, a more flexible approach is for the network-side device to choose whether to define the failure type based on MCG failure or SCG failure.

[0353] The approach is as follows: In the early stages of network optimization, we can focus only on scenarios where MCG fails and abandon optimization for SCG failures; after the MCG failure problem is resolved, the network side can be configured to collect SCG failure information and then optimize SCG mobility.

[0354] If the network-side device selects to define the failure type based on the failure information of MCG failure, then the definition of the CHO+candidateSCG failure type is the same as in Example 2, and will not be repeated here.

[0355] If the network-side device selects to define the failure type based on the failure information of SCG failure, the definition of the CHO+candidateSCG failure type is as follows:

[0356] (a) The CHO+candidate SCG is executed too late, or the CHO+candidate SCG is executed too late, which may be due to one of the following:

[0357] a1) When the UE receives the CHO+candidate SCG configuration, an SCG RLF occurs before the execution conditions are met. The appropriate PSCell selected based on the measurement is a different PSCell from the source PSCell. An MCG RLF may or may not occur before or after the SCG RLF.

[0358] a2) Description of reusing delayed CPAC execution. The description of delayed CPAC execution is as follows: After the terminal has been stably camped on the source PSCell cell for a period of time, an SCG failure occurs, and the newly selected suitable PSCell is not the source PSCell.

[0359] You can also add a description to the description of delayed CPAC execution: This description also applies to CHO+candidate SCG. You can also add a description: The UE receives the CHO+candidate SCG configuration and before the CHO+candidate SCG execution conditions are met, the SCG RLF occurs. You can also add a description: The MCG RLF may or may not occur before or after the SCG RLF occurs.

[0360] (b) Premature execution of CHO+candidate SCG or premature execution of CHO+candidate SCG may be due to one of the following:

[0361] b1) If PSCell connection fails during CHO+candidate SCG execution, or if SCG RLF occurs shortly after successful CHO+candidate SCG execution, the appropriate PSCell selected based on the measurement is the source PSCell. If PSCell connection fails during CHO+candidate SCG execution, PCell connection may or may not occur. If SCG RLF occurs shortly after successful CHO+candidate SCG execution, MCG RLF may or may not occur before or after the SCG RLF.

[0362] b2) Description of premature CPAC execution. Premature CPAC execution is described as follows: During PSCell transition, the terminal fails to access the target PSCell cell, or successfully accesses the target PSCell cell but soon experiences SCG failure, and the newly selected suitable PSCell is the source PSCell.

[0363] You can also add a description to the description of premature CPAC execution: This description also applies to CHO+candidate SCG; you can also add a description: CHO+candidate SCG execution fails, or PSCell access fails, or SCG RLF occurs shortly after CHO+candidate SCG execution succeeds; you can also add a description: MCG RLF may or may not occur before or after SCG RLF occurs.

[0364] (c) CHO+candidate SCG was executed in the wrong cell, which may be one of the following:

[0365] c1) If PSCell access fails during CHO+candidate SCG execution, or if SCG RLF occurs shortly after successful CHO+candidate SCG execution, the appropriate PSCell selected based on measurements is another cell that is neither the source PSCell nor the target PSCell. If PSCell access fails during CHO+candidate SCG execution, PCell access may or may not succeed. If SCG RLF occurs shortly after successful CHO+candidate SCG execution, MCGRLF may or may not occur before or after the SCG RLF.

[0366] c2) Reuse the description of the error PSCell when executing CPCA.

[0367] The description of CPAC execution to an incorrect PSCell is as follows: During the PSCell transition process, the terminal fails to access the target PSCell cell, or successfully accesses the target PSCell cell but quickly experiences an SCG failure, and the newly selected suitable PSCell is another PSCell cell that is neither the target PSCell cell nor the source PSCell cell.

[0368] You can also add a description to the description of CPAC execution reaching the error PSCell: This description also applies to CHO+candidate SCG; you can also add a description: CHO+candidate SCG execution failed, or PSCell access failed, or SCG RLF occurred shortly after CHO+candidate SCG execution was successful; you can also add a description: MCG RLF may or may not occur before or after SCG RLF occurs.

[0369] The detection mechanism corresponding to the above failure types can be based on the above problem definition, adding the use of a UE reporting timer to determine the length of the dwell time, for example:

[0370] When the CHO+candidate SCG is executed too late, the UE reports that the timer is empty or greater than the configured threshold value, which indicates a long dwell time.

[0371] Premature execution of CHO+candidate SCG or execution of CHO+candidate SCG to the wrong cell will cause the UE to report that the timer is less than the configured threshold value, which is used to indicate a short dwell time.

[0372] After a failure, the UE's actions in attempting to establish a connection to the access cell include: first attempting to re-establish the access cell, and / or attempting to re-establish the connection to the access cell, and / or attempting to recover the access cell via CHO;

[0373] From the UE's perspective: The network-side device can send either MCG indication information or SCG indication information to the UE. If the UE receives MCG indication information, it will only send the RLF report recorded after an MCG failure, and will not send an SCG failure information message after an SCG failure. If the UE receives SCG indication information, it will only send an SCG failure information message after an SCG failure, and will not record an RLF report after an MCG failure.

[0374] The network-side equipment may also choose not to send MCG indication information or SCG indication information to the UE. The UE may report both RLF reports and SCG failure information messages, and the network side may make the choice.

[0375] From the perspective of network-side device processing:

[0376] If the network-side device has already sent MCG or SCG indication information to the UE, the network side only needs to receive and analyze the corresponding failure information.

[0377] If the network-side device does not send MCG or SCG indication information to the UE, the network side needs to select the corresponding RLF report or SCG failure information message for processing according to the configuration.

[0378] Example 4: Scenarios where configuring CHO+candidate SCG is not applicable.

[0379] In Examples 1, 2, and 3 above, after receiving the CHO+candidate SCG failure information reported by the UE, the network-side device can analyze the failure type of CHO+candidate SCG, such as CHO+candidate SCG being executed too late, CHO+candidate SCG being executed too early, or CHO+candidate SCG being executed in the wrong cell, and perform corresponding parameter configuration optimization. However, in the following... Figure 3 In such scenarios, after the network-side device receives the failure information reported by the UE, it will obtain the failure type as CHO+candidate SCG execution too late. This analysis result is incorrect, and even if the configuration is optimized, the mobility failure problem cannot be solved.

[0380] Figure 3 In the process, the UE first connects to the primary cell A (PCell1+PSCell A) of the primary cell 1 and the secondary cell, and the target cell executed by CHO+candidate SCG is the primary cell B (PCell2+PSCell B) of the primary cell 2 and the secondary cell.

[0381] The execution of CHO+candidate SCG requires the simultaneous fulfillment of execution conditions for both PCell and PSCell. However, during UE movement, the triggering condition for PCell can be met within the common coverage area of ​​PCell1 and PCell2, and the triggering condition for PSCell can be met within the common coverage area of ​​PSCellA and PSCellB. Since the execution conditions for both PCell and PSCell are not simultaneously met, CHO+candidate SCG will not be triggered. MCG RLF will occur after the UE leaves the coverage area of ​​PCell1.

[0382] According to the definition in the above embodiments, the failure type is determined to be CHO+candidate SCG execution too late. However, even if the execution conditions are optimized to be more lenient and easier to meet, hoping to advance the execution time, CHO+candidate SCG cannot be executed because the common coverage areas of PCell1 and PCell2 and PSCellA and PSCellB do not overlap, making it impossible for the execution conditions of PCell and PSCell to be met simultaneously. Therefore, before performing failure type analysis in Examples 1, 2, and 3, this scenario needs to be excluded to avoid incorrect network parameter optimization.

[0383] The following situations need to be excluded:

[0384] The PCell switching area and the PSCell switching area do not overlap, or

[0385] The time when the trigger condition of PCell is met and the time when the trigger condition of PSCell are met do not overlap, or

[0386] The coverage area does not meet the execution conditions of CHO+candidate SCG.

[0387] CHO+candidate SCG should not be configured, or CHO+candidate SCG configuration optimization should not be performed.

[0388] To assist the network in identifying the above scenarios, the UE needs to report one or more of the following information (i.e., the first information):

[0389] (1) Time information for fulfilling PCell trigger conditions and PSCell trigger conditions. A list of PCell trigger condition fulfillment times can be used to record this information. Each node in the list includes the start time and end time of fulfilling the condition. The process is similar for PSCell, and will not be elaborated upon here.

[0390] (2) Each time the PCell trigger condition is met, the PSCell trigger condition is also recorded; similarly, each time the PCell trigger condition is met, the PSCell trigger condition is also recorded.

[0391] (3) Record the measurement results when the PCell trigger condition is met. Record the measurement results when the PSCell trigger condition is met as well. The measurement results may include the measurement results of the PCell and PSCell candidate cells.

[0392] (4) UE record identification information, which is used to indicate that the PCell trigger condition and the PSCell trigger condition have not been met at the same time.

[0393] (5) The UE records the identification information of the PSCell measurement to indicate that the measurement result of the relevant candidate PSCell is lower than a threshold value within the time period when the PCell trigger condition is met.

[0394] (6) The UE records the identification information of the PCell measurement to indicate that the measurement result of the relevant candidate PCell is lower than a threshold value within the time period when the PSCell trigger condition is met.

[0395] The threshold values ​​mentioned above can be existing measurement threshold values, such as s-MeasureConfig in the measurement configuration, a5-Threshold2 in ReportConfig, a4-Threshold, etc.

[0396] (7) The UE records identification information related to the coverage area, which is used to indicate that the PCell and PSCell do not have a common coverage area, that is... Figure 3 There is no overlap between the common coverage areas of PCell1 and PCell2 and the common coverage areas of PSCellA and PSCellB.

[0397] In this embodiment, the terminal reports the failure information of CHO+candidate SCG to the network-side device. The network-side device analyzes the failure type of CHO+candidate SCG based on the failure information to resolve the connection failure problem during movement. Before analyzing the failure type, the network side needs to exclude the above scenario; otherwise, it will lead to incorrect failure type analysis results.

[0398] In embodiments of this application, necessary information is collected from the UE to assist the network-side equipment in determining the failure type of CHO+candidateSCG. After determining the failure type, mobility configuration can be optimized accordingly. For example, if CHO+candidateSCG is executed too late, the execution conditions need to be made easier to meet, achieving the goal of advancing the execution time; if CHO+candidateSCG is executed to the wrong cell, the correct cell needs to be added to the candidate cell list so that it can be executed to the correct target cell. Through the above-mentioned optimized configuration, the handover success rate can be improved, and network indicators can be enhanced.

[0399] like Figure 4 As shown in the embodiments of this application, an information processing method for condition switching is also provided, applied to a network-side device, including:

[0400] Step 401: Receive the failure information of conditional handover of the conditional candidate secondary cell group sent by the terminal;

[0401] Step 402: Based on the failure information, determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0402] In this embodiment, if a handover failure occurs during the execution of CHO+candidate SCG, the terminal sends failure information to the network-side device. The failure may include MCG failure and / or SCG failure, and the failure information may include information related to the MCG failure and / or SCG failure. The MCG failure may include a radio link failure and / or handover failure on the MCG, such as a PCell handover failure or an RLF on the MCG; the SCG failure may include a radio link failure on the SCG and / or a synchronization reconfiguration failure on the SCG, such as a PSCell addition failure, a PSCell transition failure, or an RLF on the SCG.

[0403] The failure information can be used to determine the failure type of CHO+candidate SCG, or it can be understood as the failure information used to define the failure type of CHO+candidate SCG. For example, network-side devices can determine (or define) the type of failure that occurred during the CHO+candidate SCG process based on the failure information, and thus perform MRO for the determined failure type to achieve targeted optimization and more accurately solve mobility problems.

[0404] In the embodiments of this application, for conditional handover of a conditional candidate secondary cell group, the terminal reports the failure information of the conditional handover to the network-side device. The network-side device can determine the failure type of the conditional handover of the conditional candidate secondary cell group based on the failure information, and then perform corresponding mobility configuration for the determined failure type to achieve more accurate MRO, improve the handover success rate, and improve network indicators.

[0405] Optionally, based on the failure information, the failure type of the conditional handover of the conditional candidate secondary cell group is determined, including one of the following:

[0406] (1) Determine the failure type of the conditional handover of the conditional candidate secondary cell group based on the failure information of the first failure;

[0407] In this embodiment, the "first failure" refers to, for example, the failure that occurs first after the terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group, such as MCG failure first and SCG failure first. For example, if the terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group and then experiences MCG failure first, followed by SCG failure, then the first failure refers to MCG failure; as another example, if the terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group and then experiences SCG failure first, followed by MCG failure, then the first failure refers to SCG failure.

[0408] In this scenario, the terminal can report only the failure information of the first failure to the network-side device, and the network-side device can determine the failure type of the CHO+candidate SCG based on the failure information of the first failure. Optionally, the terminal can also report the failure information of each subsequent failure, but the network-side device will only determine the failure type of the CHO+candidate SCG based on the failure information of the first failure.

[0409] (2) Determine the failure type of the conditional handover of the conditional candidate secondary cell group based on the failure information of the MCG failure;

[0410] In this embodiment, the terminal may only report the failure information of MCG failure to the network-side device, and the network-side device determines the failure type of CHO+candidate SCG based on the failure information of MCG failure; alternatively, the terminal may also report the failure information of each failure, but the network-side device determines the failure type of CHO+candidateSCG only based on the failure information of MCG failure.

[0411] For example: If the CHO+candidate SCG process fails with an MCG failure, the terminal reports the MCG failure information to the network-side device. If an SCG failure subsequently occurs, the terminal may choose not to send the SCG failure information or to do so. As another example: If the CHO+candidate SCG process fails with an SCG failure, the terminal may choose not to report the SCG failure information to the network-side device. If an MCG failure subsequently occurs, the terminal may then report the MCG failure information to the network-side device.

[0412] (3) Determine the failure type of the conditional handover of the conditional candidate secondary cell group based on the failure information of the MCG failure or the failure information of the SCG failure.

[0413] In this embodiment, the terminal may send only the MCG failure information, only the SCG failure information, or both MCG and SCG failure information to the network-side device. The network-side device can determine the failure type of CHO+candidate SCG based on either the MCG failure information or the SCG failure information. The network-side device can choose which type of information to use to determine the failure type.

[0414] As an optional embodiment, the failure type includes at least one of the following:

[0415] (1) The conditional handover of the conditional candidate auxiliary cell group is executed too late; it can also be understood as the CHO+candidate SCG is executed too late.

[0416] (2) Conditional handover of the conditional candidate secondary cell group was executed too early; this can also be understood as premature execution of CHO+candidate SCG.

[0417] (3) The conditions of the candidate auxiliary cell group with conditions are applied to the wrong cell.

[0418] In this embodiment, during the execution of CHO+candidate SCG, either MCG failure or SCG failure may occur, or both of the above failures may occur. The terminal reports the failure information during the execution of CHO+candidate SCG to the network-side device. The network-side device can determine the failure type of CHO+candidate SCG as any of the above based on the failure information. For example, the network-side device determines the failure type of CHO+candidate SCG as any of the above based on the failure information of the first failure, or the network-side device determines the failure type of CHO+candidate SCG as any of the above based on the failure information of the MCG failure, or the network-side device determines the failure type of CHO+candidate SCG as any of the above based on the failure information of the SCG failure.

[0419] Optionally, the definition of "conditional handover of the conditional candidate secondary cell group is too late" includes one of the following:

[0420] 11) The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on the measurement, which is a different PSCell from the source PSCell.

[0421] In this embodiment, the execution of CHO+candidate SCG too late or a delayed CHO+candidate SCG can be defined as follows: the UE receives the CHO+candidate SCG configuration, and before the execution conditions are met, the SCG RLF occurs, and the appropriate PSCell selected based on measurement is another PSCell different from the source PSCell. The SCG RLF occurs first, and the MCG RLF may or may not fail afterward.

[0422] 12) The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs. The new PSCell selected is a different PSCell from the source PSCell.

[0423] In this embodiment, the description of delayed CHO+candidate SCG execution can be reused, for example: after the terminal has stably camped on the source PSCell cell for a period of time, an SCG failure occurs, and the newly selected suitable PSCell is not the source PSCell. Alternatively, the description of delayed CPAC execution can be supplemented with: this description also applies to CHO+candidate SCG; or, the description of delayed CPAC execution can be supplemented with: the UE receives the CHO+candidate SCG configuration, and the SCG RLF occurs before the CHO+candidate SCG execution conditions are met; or, the description of delayed CPAC execution can be supplemented with: the SCG RLF occurs first, and the MCG RLF may fail or not occur afterward.

[0424] This embodiment does not limit the specific duration of the first time, which refers to the duration for which the terminal resides in the source PSCell.

[0425] 13) The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG RLF occurs, and the terminal re-establishes a connection in a cell different from the source PCell.

[0426] In this embodiment, a delayed or excessively late CHO+candidate SCG execution can be defined as follows: The UE receives the CHO+candidate SCG configuration, and before the execution conditions are met, an MCG RLF occurs, and the UE attempts to establish a connection in a cell different from the original PCell. The MCG RLF occurs first, and the SCG RLF may or may not occur afterward.

[0427] 14) The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal performs MCGRLF after the second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

[0428] In this embodiment, the description of delayed handover for CHO+candidate SCG execution can be reused. For example, after the terminal has been stably camped in the source cell for a period of time, a radio link failure occurs, and the terminal attempts to establish a connection in a different cell. Alternatively, the description of delayed handover can be supplemented with: this description also applies to CHO+candidate SCG; or, the description of delayed handover can be supplemented with: CHO+candidate SCG has been configured before the connection failure occurs but execution has not been triggered; or, the description of delayed handover can be supplemented with: MCG RLF occurs first, and SCG RLF may or may not occur afterward.

[0429] This embodiment does not limit the specific duration of the second time, which represents the duration for which the terminal resides in the source cell.

[0430] Optionally, the definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following:

[0431] 21) In the case of performing conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or the PSCell access fails, or the SCG fails within the third time after the conditional handover of the conditional candidate secondary cell group is successfully performed, the appropriate PSCell selected by the terminal based on the measurement is the source PSCell.

[0432] In this embodiment, premature or early execution of CHO+candidate SCG can be defined as: PSCell access failure during CHO+candidate SCG execution or SCG RLF occurring shortly after successful CHO+candidate SCG execution, and the appropriate PSCell selected based on measurement is the source PSCell.

[0433] When CHO+candidate SCG is executed, PSCell connection fails. At this time, PCell connection may or may not succeed. After CHO+candidate SCG is executed successfully, SCG RLF will occur first, and MCG RLF may or may not occur afterward.

[0434] This embodiment does not limit the specific length of the third time. The third time refers to the duration from the execution of the conditional switch to the occurrence of SCG failure, or it can be understood as the duration from the start of the conditional switch to the occurrence of SCG failure.

[0435] Alternatively, the description of premature CHO+candidate SCG execution can be reused, for example: during PSCell transition, the terminal fails to access the target PSCell cell, or access to the target PSCell cell is successful but SCG failure occurs shortly afterward, and the newly selected suitable PSCell is the source PSCell. Alternatively, the description of premature CPAC execution can be expanded to include: this description also applies to CHO+candidate SCG; or, the description of premature CPAC execution can be expanded to include: CHO+candidate SCG execution fails, or PSCell access fails, or SCG RLF occurs shortly after successful CHO+candidate SCG execution; or, the description of premature CPAC execution can be expanded to include: SCG RLF occurs first, and MCG RLF may or may not occur afterward.

[0436] 22) If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if MCG RLF occurs within the fourth time after successful conditional handover of the conditional candidate secondary cell group, the terminal re-establishes a connection in the source PCell.

[0437] In this embodiment, premature or excessively early execution of CHO+candidate SCG can be defined as follows: PCell access fails during CHO+candidate SCG execution, or MCG RLF occurs shortly after successful CHO+candidate SCG execution, and the UE attempts to establish a connection in the original PCell cell. If PCell access fails during CHO+candidate SCG execution, PSCell access may or may not succeed.

[0438] After CHO+candidate SCG is executed successfully, MCG RLF will occur first, and SCG RLF may or may not occur afterward.

[0439] Alternatively, the description of premature handover can be reused for CHO+candidate SCG execution prematurely or too early CHO+candidate SCG execution. For example: during the handover process, the terminal fails to access the target cell, or successfully accesses the target cell but soon experiences a radio link failure, and the terminal attempts to establish a connection in the source cell. Alternatively, the description of premature handover can be supplemented by adding: this description also applies to CHO+candidate SCG; or, the description of premature handover can be supplemented by adding: CHO+candidate SCG execution fails, or handover fails, or RLF occurs soon after successful CHO+candidate SCG execution; or, the description of premature handover can be supplemented by adding: MCG RLF occurs first, and SCG RLF may or may not occur afterward.

[0440] This embodiment does not limit the specific length of the fourth time. The fourth time represents the duration from the execution of the conditional switch to the occurrence of MCG failure, or it can be understood as the duration from the start of the conditional switch to the occurrence of MCG failure.

[0441] Optionally, the definition of conditional execution to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following:

[0442] 31) In the case of performing conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or the PSCell access fails, or the SCG fails within the fifth time after the conditional handover of the conditional candidate secondary cell group is successfully performed, the appropriate PSCell selected by the terminal based on the measurement is another PSCell that is different from the source PSCell and different from the target PSCell.

[0443] In this embodiment, the condition execution to the wrong cell in the conditional candidate secondary cell group can be defined as follows: PSCell access fails when CHO+candidate SCG is executed, or SCGRLF occurs shortly after CHO+candidate SCG is executed successfully. The suitable PSCell selected based on measurements is another cell that is neither the source PSCell nor the target PSCell. When PSCell access fails during CHO+candidate SCG execution, PCell access may or may not succeed. Shortly after successful CHO+candidate SCG execution, SCG RLF occurs first, followed by MCG RLF, which may or may not occur.

[0444] Alternatively, the definition of conditional execution to the wrong cell in the conditional candidate secondary cell group can reuse the description of CPAC execution to the wrong PSCell. For example, during PSCell transition, if the terminal fails to access the target PSCell cell, or successfully accesses the target PSCell cell but SCG failure occurs shortly afterward, the newly selected suitable PSCell is another PSCell cell that is neither the target PSCell cell nor the source PSCell cell. Alternatively, based on the description of CPAC execution to the wrong PSCell, add the description: This description also applies to CHO+candidate SCG; or, based on the description of CPAC execution to the wrong PSCell, add the description: CHO+candidate SCG execution fails, or PSCell access fails, or SCG RLF occurs shortly after CHO+candidate SCG execution succeeds; or, based on the description of CPAC execution to the wrong PSCell, add the description: SCG RLF occurs first, and MCG RLF may or may not occur afterward.

[0445] This embodiment does not limit the specific length of the fifth time. The fifth time represents the duration from the execution of the conditional switch to the occurrence of SCG failure, or it can be understood as the duration from the start of the conditional switch to the occurrence of SCG failure.

[0446] 32) If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within six hours after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on another PCell that is different from the source PCell and different from the target PCell.

[0447] In this embodiment, the condition execution to the wrong cell in the conditional candidate secondary cell group can be defined as follows: PCell access fails when CHO+candidate SCG is executed, or MCGRLF occurs shortly after CHO+candidate SCG is executed successfully, and the UE attempts to establish a connection in another cell that is neither the original PCell nor the target PCell. If PCell access fails when CHO+candidate SCG is executed, PSCell access may or may not succeed. If CHO+candidate SCG is executed successfully, MCG RLF occurs shortly afterward, and SCG RLF may or may not occur afterward.

[0448] Alternatively, the definition of conditional execution to the wrong cell in the conditional candidate secondary cell group can also reuse the description of handover to the wrong cell. For example: during the handover process, the terminal fails to access the target cell, or successfully accesses the target cell but a radio link failure occurs shortly afterward, and the terminal attempts to establish a connection in a cell different from the handover target cell and the source cell. Alternatively, based on the description of handover to the wrong cell, add the description: this description also applies to CHO+candidateSCG; or, based on the description of handover to the wrong cell, add the description: CHO+candidate SCG execution fails, or handover fails, or an RLF occurs shortly after CHO+candidate SCG execution succeeds; or, based on the description of handover to the wrong cell, add the description: MCG RLF occurs first, and SCG RLF may or may not occur afterward.

[0449] This embodiment does not limit the specific length of the sixth time. The sixth time represents the duration from the execution of the conditional switch to the occurrence of MCG failure, or it can be understood as the duration from the start of the conditional switch to the occurrence of MCG failure.

[0450] As an optional embodiment, the method further includes:

[0451] The first message sent by the receiving terminal;

[0452] Based on the first information, determine whether to configure conditional handover of conditional candidate secondary cell groups;

[0453] The first information includes at least one of the following:

[0454] 1) Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the secondary cell group's primary cell PSCell;

[0455] In this embodiment, the terminal can send the PCell trigger condition fulfillment time information and the PSCell trigger condition fulfillment time information to the network-side device. Optionally, a PCell trigger condition fulfillment time list can be used for recording, where each node in the list includes the start time and end time of fulfilling the condition. Similarly, a PSCell trigger condition fulfillment time list can be used for recording, where each node in the list includes the start time and end time of fulfilling the condition.

[0456] 2) Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met;

[0457] In this embodiment, the terminal can also record whether the PSCell trigger condition is met each time the PCell trigger condition is met, and send the recorded information to the network-side device.

[0458] 3) Information on the timing of PSCell execution conditions being met, and information on whether PCell execution conditions are met when PSCell execution conditions are met;

[0459] In this embodiment, the terminal can also record whether the PSCell trigger condition is met each time the PCell trigger condition is met, and send the recorded information to the network-side device.

[0460] 4) Measurement results when the PCell execution conditions are met;

[0461] In this embodiment, the terminal can record the measurement results and report the measurement results to the network-side device when the PCell trigger condition is met.

[0462] 5) Measurement results when the PSCell execution conditions are met;

[0463] In this embodiment, the terminal can record the measurement results and report the measurement results to the network-side device when the PSCell trigger condition is met.

[0464] 6) First identification information, used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met;

[0465] In this embodiment, the terminal records and reports the first identification information to the network side, indicating that the PCell trigger condition and the PSCell trigger condition have not been met simultaneously.

[0466] 7) Second identification information, used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met;

[0467] In this embodiment, the terminal records and reports the second identification information to the network side, indicating that within the time period when the PCell trigger condition is met, the measurement result of the relevant candidate PSCell is lower than a threshold value. The first value is not limited here and can be configured, pre-configured, or pre-defined by the network side device.

[0468] 8) The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met;

[0469] In this embodiment, the terminal records and reports third identification information to the network side, indicating that within the time period when the PSCell trigger condition is met, the measurement result of the relevant candidate PCell is lower than a threshold value. The second value is not limited here and can be configured, pre-configured, or pre-defined by the network-side device.

[0470] The first value and / or the second value can be the aforementioned threshold values, which can be traditional measurement threshold values, such as s-MeasureConfig in measurement configuration, a5-Threshold2 in ReportConfig, a4-Threshold, etc.

[0471] 9) Fourth identification information, used to indicate that the PCell handover area and the PSCell handover area have no common coverage area. In this embodiment, the terminal records and reports the fourth identification information to the network side, indicating that the PCell and PSCell have no common coverage area.

[0472] In this embodiment, after receiving failure information reported by the terminal, the network-side device can optimize the configuration of CHO+candidate SCG based on the failure information. However, in some cases, the failure type determined by the network-side device may be incorrect, and even with configuration optimization, the mobility failure problem cannot be resolved. Therefore, in these cases, the network-side device does not configure or optimize the conditional handover of the conditional candidate secondary cell group. To assist the network-side device in identifying these cases, the terminal reports at least one of the first pieces of information to the network-side device. The network-side device determines whether to configure or optimize CHO+candidate SCG based on the first information.

[0473] Optionally, conditional handover of the conditional candidate secondary cell group shall not be configured in at least one of the following cases:

[0474] There is no overlap between the PCell switching area and the PSCell switching area;

[0475] The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap.

[0476] The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group;

[0477] Conditional handover of the conditional candidate secondary cell group cannot be configured; or it can be understood that CHO+candidate SCG should not be configured.

[0478] The configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed, or it can be understood that the configuration optimization of CHO+candidate SCG should not be performed.

[0479] In this embodiment, the terminal reports first information to the network-side device. If the network-side device identifies at least one of the aforementioned situations based on the first information, it will not configure or optimize the conditional handover of the conditional candidate secondary cell group. In other cases, it can optimize the configuration of the conditional handover of the conditional candidate secondary cell group, thereby resolving the mobility failure problem. The "whether to configure the conditional handover of the conditional candidate secondary cell group" mentioned in this embodiment can also be understood as whether the network-side device optimizes the configuration of the conditional handover of the conditional candidate secondary cell group after receiving the failure information reported by the terminal.

[0480] In embodiments of this application, after receiving the failure information of conditional handover of the conditional candidate secondary cell group reported by the terminal and the first information, the network-side device can exclude the case where the conditional handover is not configured for optimization. In other cases, it can determine the failure type and perform corresponding optimizations. For example, for the error type of CHO+candidate SCG execution that is too late, the parameters can be optimized to make the CHO+candidate SCG execution conditions easier to meet, achieving the goal of advancing the execution time point; for the error type of CHO+candidate SCG execution that is too early, the parameters can be optimized to make the CHO+candidate SCG execution conditions more difficult to meet, achieving the goal of delaying the execution time point; for the error type of CHO+candidate SCG execution to the wrong cell, the parameters can be optimized to make it easier for CHO+candidate SCG to select the target candidate PCell and PSCell, or the target PCell and PSCell may not be in the candidate cell list and need to be added to the candidate cell list.

[0481] In embodiments of this application, necessary information is collected from the UE to assist the network-side equipment in determining the failure type of CHO+candidateSCG. After determining the failure type, mobility configuration can be optimized accordingly. For example, if CHO+candidateSCG is executed too late, the execution conditions need to be made easier to meet, achieving the goal of advancing the execution time; if CHO+candidateSCG is executed to the wrong cell, the correct cell needs to be added to the candidate cell list so that it can be executed to the correct target cell. Through the above-mentioned optimized configuration, the handover success rate can be improved, and network indicators can be enhanced.

[0482] The above embodiments describe the information processing method for condition switching in this application. The following embodiments will further describe the corresponding devices in conjunction with the accompanying drawings.

[0483] Specifically, such as Figure 5 As shown, this application embodiment provides an information processing device 500 for condition switching, applied to a terminal, including:

[0484] The first sending unit 510 is used to send failure information of conditional handover of the conditional candidate secondary cell group to the network-side device. The failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0485] Optionally, the failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group, including one of the following:

[0486] The failure information of the first failure is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group;

[0487] Failure information of MCG failure is used to determine the failure type of conditional handover of the conditional candidate secondary cell group;

[0488] Failure information for either MCG or SCG failures is used to determine the failure type of the conditional handover for the conditional candidate secondary cell group.

[0489] Optionally, the failure type includes at least one of the following:

[0490] The conditional handover of the conditional candidate secondary cell group was executed too late;

[0491] The conditional handover of the conditional candidate auxiliary cell group was executed too early;

[0492] The conditions of the candidate auxiliary cell group with conditions were applied to the wrong cell.

[0493] Optionally, the first sending unit is specifically configured to perform one of the following:

[0494] During the conditional handover process of the conditional candidate secondary cell group, the failure information of the first failure is reported to the network-side device;

[0495] During the conditional handover process of the conditional candidate secondary cell group, only the failure information of MCG failure is reported to the network-side device;

[0496] During the conditional handover process of the conditional candidate secondary cell group, failure information of MCG failure or SCG failure is reported to the network side device according to the instruction information of the network side device.

[0497] Optionally, the device further includes:

[0498] The second sending unit is used to send first information to the network-side device, the first information being used to determine whether to configure conditional handover with conditional candidate secondary cell group;

[0499] The first information includes at least one of the following:

[0500] Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the primary cell PSCell of the secondary cell group;

[0501] Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met;

[0502] Information on when the PSCell execution conditions are met, and information on whether the PCell execution conditions are met if the PSCell execution conditions are met.

[0503] Measurement results when PCell execution conditions are met;

[0504] Measurement results when PSCell execution conditions are met;

[0505] The first identification information is used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met;

[0506] The second identification information is used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met;

[0507] The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met;

[0508] The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

[0509] Optionally, conditional handover of the conditional candidate secondary cell group shall not be configured in at least one of the following cases:

[0510] There is no overlap between the PCell switching area and the PSCell switching area;

[0511] The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap.

[0512] The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group;

[0513] Conditional handover cannot be configured for the conditional candidate secondary cell group;

[0514] Configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed.

[0515] Optionally, the definition of "conditional handover of the conditional candidate secondary cell group is too late" includes one of the following:

[0516] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on measurements, which is a different PSCell from the source PSCell.

[0517] The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs, and the new PSCell selected is a different PSCell from the source PSCell.

[0518] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG RLF occurs, and the terminal re-establishes a connection in a cell different from the source PCell.

[0519] The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal experiences MCG RLF after a second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

[0520] Optionally, the definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following:

[0521] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the third time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is the source PSCell.

[0522] If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within the fourth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on the source PCell.

[0523] Optionally, the definition of conditional execution to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following:

[0524] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the fifth time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is another PSCell that is different from the source PSCell and different from the target PSCell.

[0525] If a conditional handover with a conditional candidate secondary cell group fails, or if an MCG RLF occurs within six hours after the conditional handover with the conditional candidate secondary cell group is successfully executed, the terminal will re-establish a connection on another PCell that is different from both the source PCell and the target PCell.

[0526] It should be noted that the apparatus provided in this application embodiment can implement all the method steps implemented in the method embodiment applied to the terminal, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0527] Specifically, such as Figure 6 As shown, this application embodiment provides an information processing device 600 for conditional switching, applied to a network-side device, including:

[0528] The first receiving unit 610 is used to receive the failure information of conditional handover of conditional candidate secondary cell group sent by the terminal;

[0529] The first determining unit 620 is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group based on the failure information.

[0530] Optionally, the first determining unit is specifically configured to perform one of the following:

[0531] Based on the failure information of the first failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group;

[0532] Based on the failure information of the MCG failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group;

[0533] Based on the failure information of MCG failure or SCG failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0534] Optionally, the failure type includes at least one of the following:

[0535] The conditional handover of the conditional candidate secondary cell group was executed too late;

[0536] The conditional handover of the conditional candidate auxiliary cell group was executed too early;

[0537] The conditions of the candidate auxiliary cell group with conditions were applied to the wrong cell.

[0538] Optionally, the device further includes:

[0539] The second receiving unit is used to receive the first information sent by the terminal;

[0540] The second determining unit is used to determine whether to configure conditional handover of conditional candidate secondary cell groups based on the first information.

[0541] The first information includes at least one of the following:

[0542] Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the primary cell PSCell of the secondary cell group;

[0543] Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met;

[0544] Information on when the PSCell execution conditions are met, and information on whether the PCell execution conditions are met if the PSCell execution conditions are met.

[0545] Measurement results when PCell execution conditions are met;

[0546] Measurement results when PSCell execution conditions are met;

[0547] The first identification information is used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met;

[0548] The second identification information is used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met;

[0549] The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met;

[0550] The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

[0551] Optionally, the second determining unit is specifically used for:

[0552] Based on the first information, it is determined that conditional handover of the conditional candidate secondary cell group will not be configured under at least one of the following conditions:

[0553] There is no overlap between the PCell switching area and the PSCell switching area;

[0554] The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap.

[0555] The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group;

[0556] Conditional handover cannot be configured for the conditional candidate secondary cell group;

[0557] Configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed.

[0558] Optionally, the definition of "conditional handover of the conditional candidate secondary cell group is too late" includes one of the following:

[0559] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on measurements, which is a different PSCell from the source PSCell.

[0560] The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs, and the new PSCell selected is a different PSCell from the source PSCell.

[0561] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG RLF occurs, and the terminal re-establishes a connection in a cell different from the source PCell.

[0562] The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal experiences MCG RLF after a second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

[0563] Optionally, the definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following:

[0564] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the third time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is the source PSCell.

[0565] If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within the fourth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on the source PCell.

[0566] Optionally, the definition of conditional execution to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following:

[0567] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the fifth time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is another PSCell that is different from the source PSCell and different from the target PSCell.

[0568] If a conditional handover with a conditional candidate secondary cell group fails, or if an MCG RLF occurs within six hours after the conditional handover with the conditional candidate secondary cell group is successfully executed, the terminal will re-establish a connection on another PCell that is different from both the source PCell and the target PCell.

[0569] It should be noted that the apparatus provided in this application embodiment can implement all the method steps implemented in the method embodiment applied to the network side device, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0570] It should be noted that the division of units in the embodiments of this application is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0571] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0572] like Figure 7 As shown, embodiments of this application also provide a terminal, including: a memory 720, a transceiver 700, and a processor 710; wherein, the memory 720 is used to store computer programs; the transceiver 700 is used to receive and send data under the control of the processor 710; and the processor 710 is used to read the computer program in the memory and perform the following operations:

[0573] The failure information of conditional handover of the conditional candidate secondary cell group is sent to the network-side equipment. The failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0574] Optionally, the failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group, including one of the following:

[0575] The failure information of the first failure is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group;

[0576] Failure information of MCG failure is used to determine the failure type of conditional handover of the conditional candidate secondary cell group;

[0577] Failure information for either MCG or SCG failures is used to determine the failure type of the conditional handover for the conditional candidate secondary cell group.

[0578] Optionally, the failure type includes at least one of the following:

[0579] The conditional handover of the conditional candidate secondary cell group was executed too late;

[0580] The conditional handover of the conditional candidate auxiliary cell group was executed too early;

[0581] The conditions of the candidate auxiliary cell group with conditions were applied to the wrong cell.

[0582] Optionally, the processor is configured to read the computer program in the memory and perform one of the following operations:

[0583] During the conditional handover process of the conditional candidate secondary cell group, the failure information of the first failure is reported to the network-side device;

[0584] During the conditional handover process of the conditional candidate secondary cell group, only the failure information of MCG failure is reported to the network-side device;

[0585] During the conditional handover process of the conditional candidate secondary cell group, failure information of MCG failure or SCG failure is reported to the network side device according to the instruction information of the network side device.

[0586] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0587] Send first information to the network-side device, the first information being used to determine whether to configure conditional handover with conditional candidate secondary cell group;

[0588] The first information includes at least one of the following:

[0589] Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the primary cell PSCell of the secondary cell group;

[0590] Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met;

[0591] Information on when the PSCell execution conditions are met, and information on whether the PCell execution conditions are met if the PSCell execution conditions are met.

[0592] Measurement results when PCell execution conditions are met;

[0593] Measurement results when PSCell execution conditions are met;

[0594] The first identification information is used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met;

[0595] The second identification information is used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met;

[0596] The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met;

[0597] The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

[0598] Optionally, conditional handover of the conditional candidate secondary cell group shall not be configured in at least one of the following cases:

[0599] There is no overlap between the PCell switching area and the PSCell switching area;

[0600] The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap.

[0601] The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group;

[0602] Conditional handover cannot be configured for the conditional candidate secondary cell group;

[0603] Configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed.

[0604] Optionally, the definition of "conditional handover of the conditional candidate secondary cell group is too late" includes one of the following:

[0605] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on measurements, which is a different PSCell from the source PSCell.

[0606] The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs, and the new PSCell selected is a different PSCell from the source PSCell.

[0607] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG RLF occurs, and the terminal re-establishes a connection in a cell different from the source PCell.

[0608] The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal experiences MCG RLF after a second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

[0609] Optionally, the definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following:

[0610] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the third time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is the source PSCell.

[0611] If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within the fourth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on the source PCell.

[0612] Optionally, the definition of conditional execution to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following:

[0613] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the fifth time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is another PSCell that is different from the source PSCell and different from the target PSCell.

[0614] If a conditional handover with a conditional candidate secondary cell group fails, or if an MCG RLF occurs within six hours after the conditional handover with the conditional candidate secondary cell group is successfully executed, the terminal will re-establish a connection on another PCell that is different from both the source PCell and the target PCell.

[0615] Among them, Figure 7In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 710 and memory represented by memory 720 together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 700 can be multiple components, including transmitters and transceivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, the user interface 730 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0616] The processor 710 is responsible for managing the bus architecture and general processing, while the memory 720 can store the data used by the processor 710 during operation.

[0617] Optionally, the processor 710 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD), and the processor can also adopt a multi-core architecture.

[0618] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0619] It should be noted that the terminal provided in this application embodiment can implement all the method steps implemented in the method embodiment applied to the terminal, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0620] like Figure 8 As shown, embodiments of this application also provide a network-side device, including: a memory 820, a transceiver 800, and a processor 810; wherein, the memory 820 is used to store computer programs; the transceiver 800 is used to receive and send data under the control of the processor 810; and the processor 810 is used to read the computer program in the memory and perform the following operations:

[0621] Receive terminal sending conditional handover failure information for conditional candidate secondary cell groups;

[0622] Based on the failure information, determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0623] Optionally, the processor is configured to read the computer program in the memory and perform one of the following operations:

[0624] Based on the failure information of the first failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group;

[0625] Based on the failure information of the MCG failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group;

[0626] Based on the failure information of MCG failure or SCG failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0627] Optionally, the failure type includes at least one of the following:

[0628] The conditional handover of the conditional candidate secondary cell group was executed too late;

[0629] The conditional handover of the conditional candidate auxiliary cell group was executed too early;

[0630] The conditions of the candidate auxiliary cell group with conditions were applied to the wrong cell.

[0631] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0632] The first message sent by the receiving terminal;

[0633] Based on the first information, determine whether to configure conditional handover of conditional candidate secondary cell groups;

[0634] The first information includes at least one of the following:

[0635] Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the primary cell PSCell of the secondary cell group;

[0636] Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met;

[0637] Information on when the PSCell execution conditions are met, and information on whether the PCell execution conditions are met if the PSCell execution conditions are met.

[0638] Measurement results when PCell execution conditions are met;

[0639] Measurement results when PSCell execution conditions are met;

[0640] The first identification information is used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met;

[0641] The second identification information is used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met;

[0642] The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met;

[0643] The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

[0644] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0645] Based on the first information, it is determined that conditional handover of the conditional candidate secondary cell group will not be configured under at least one of the following conditions:

[0646] There is no overlap between the PCell switching area and the PSCell switching area;

[0647] The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap.

[0648] The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group;

[0649] Conditional handover cannot be configured for the conditional candidate secondary cell group;

[0650] Configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed.

[0651] Optionally, the definition of "conditional handover of the conditional candidate secondary cell group is too late" includes one of the following:

[0652] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on measurements, which is a different PSCell from the source PSCell.

[0653] The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs, and the new PSCell selected is a different PSCell from the source PSCell.

[0654] The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG RLF occurs, and the terminal re-establishes a connection in a cell different from the source PCell.

[0655] The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal experiences MCG RLF after a second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

[0656] Optionally, the definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following:

[0657] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the third time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is the source PSCell.

[0658] If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within the fourth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on the source PCell.

[0659] Optionally, the definition of conditional execution to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following:

[0660] In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the fifth time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is another PSCell that is different from the source PSCell and different from the target PSCell.

[0661] If a conditional handover with a conditional candidate secondary cell group fails, or if an MCG RLF occurs within six hours after the conditional handover with the conditional candidate secondary cell group is successfully executed, the terminal will re-establish a connection on another PCell that is different from both the source PCell and the target PCell.

[0662] Among them, Figure 8 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits together, represented by one or more processors (processor 810) and memory (memory 820). The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 800 can be multiple elements, including transmitters and transceivers, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. The processor is responsible for managing the bus architecture and general processing. The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 can store data used by the processor 810 during operation.

[0663] The processor 810 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor can also adopt a multi-core architecture.

[0664] It should be noted that the network-side device provided in this application embodiment can implement all the method steps implemented in the method embodiment applied to the network-side device, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0665] In addition, specific embodiments of this application also provide a processor-readable storage medium storing a computer program thereon. When executed by a processor, this program implements the steps of the information processing method described above for condition switching, achieving the same technical effect. To avoid repetition, it will not be described again here. The readable storage medium can be any available medium or data storage device accessible to the processor, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs), etc.).

[0666] It should be noted that the technical solutions provided in this application can be applied to a variety of systems. For example, applicable systems may include Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Long Term Evolution Advanced (LTE-A) systems, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) systems, 5G New Radio (NR) systems and their evolved communication systems, and 6G (sixth generation mobile communication technology) systems. These systems may include terminal equipment and network equipment. The systems may also include a core network component, such as the Evolved Packet Core (EPC) and the 5G Core Network (5GC).

[0667] The terminal devices involved in the embodiments of this application can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminal devices may differ in different systems; for example, in 5G or 6G systems, the terminal device may be called User Equipment (UE). Wireless terminal devices can be USB storage devices, other personal computer memory devices, and dongles. They can also communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices. For example, they can be portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the radio access network. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), personal computers, tablets, and Machine-type Communication (MTC) terminal devices. Wireless terminal devices can also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile devices, remote stations, access points, remote terminals, access terminals, user terminals, user agents, user devices, and wireless access devices and routers / modems that meet the limitations of this definition; however, this application does not limit the scope of the embodiments.

[0668] The network-side equipment involved in this application embodiment can be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, the base station may also be called an access point, or a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network-side equipment can be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network-side equipment can also coordinate the attribute management of the air interface. For example, the network-side equipment involved in this application embodiment can be an evolved network device (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system, or a Home evolved Node B (HeNB), relay node, femto, pico, network testing equipment, etc., and is not limited in this application embodiment. In some network architectures, network-side devices may include centralized unit (CU) nodes and distributed unit (DU) nodes, which may also be geographically separated.

[0669] Network devices and terminal devices can each use one or more antennas to perform Multiple-Input Multiple-Output (MIMO) transmission. MIMO transmission can be single-user MIMO or multi-user MIMO. Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and can also be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0670] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0671] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more blocks of the flowchart illustrations and / or one or more blocks of the block diagrams.

[0672] These processor-executable instructions may also be stored in a processor-readable memory that can instruct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more blocks of a block diagram.

[0673] These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more blocks of a block diagram.

[0674] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for processing information involving condition switching, characterized in that, Applied to terminals, including: The failure information of conditional handover of the conditional candidate secondary cell group is sent to the network-side equipment. The failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

2. The method according to claim 1, characterized in that, The failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group, including one of the following: The failure information of the first failure is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group; Failure information of MCG failure is used to determine the failure type of conditional handover of the conditional candidate secondary cell group; Failure information for either MCG or SCG failures is used to determine the failure type of the conditional handover for the conditional candidate secondary cell group.

3. The method according to claim 1 or 2, characterized in that, The failure type includes at least one of the following: The conditional handover of the conditional candidate secondary cell group was executed too late; The conditional handover of the conditional candidate auxiliary cell group was executed too early; The conditions of the candidate auxiliary cell group with conditions were applied to the wrong cell.

4. The method according to claim 1 or 2, characterized in that, Send a failure message for conditional handover with conditional candidate secondary cell group to the network-side equipment, including one of the following: During the conditional handover process of the conditional candidate secondary cell group, the failure information of the first failure is reported to the network-side device; During the conditional handover process of the conditional candidate secondary cell group, only the failure information of MCG failure is reported to the network-side device; During the conditional handover process of the conditional candidate secondary cell group, failure information of MCG failure or SCG failure is reported to the network side device according to the instruction information of the network side device.

5. The method according to claim 1, characterized in that, The method further includes: Send first information to the network-side device, the first information being used to determine whether to configure conditional handover with conditional candidate secondary cell group; The first information includes at least one of the following: Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the primary cell PSCell of the secondary cell group; Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met; Information on when the PSCell execution conditions are met, and information on whether the PCell execution conditions are met if the PSCell execution conditions are met. Measurement results when PCell execution conditions are met; Measurement results when PSCell execution conditions are met; The first identification information is used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met; The second identification information is used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met; The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met; The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

6. The method according to claim 5, characterized in that, Conditional handover of the conditional candidate secondary cell group shall not be configured in at least one of the following circumstances: There is no overlap between the PCell switching area and the PSCell switching area; The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap. The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group; Conditional handover cannot be configured for the conditional candidate secondary cell group; Configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed.

7. The method according to claim 3, characterized in that, The definition of "conditional handover of conditional candidate secondary cell group is too late" includes the following: The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on measurements, which is a different PSCell from the source PSCell. The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs, and the new PSCell selected is a different PSCell from the source PSCell. The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG radio link failure (RLF) occurs, and the terminal re-establishes a connection in a cell different from the source PCell. The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal experiences MCG RLF after a second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

8. The method according to claim 3, characterized in that, The definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following: In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the third time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is the source PSCell. If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within the fourth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on the source PCell.

9. The method according to claim 3, characterized in that, The definition of applying the conditions to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following: In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the fifth time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is another PSCell that is different from the source PSCell and different from the target PSCell. If a conditional handover with a conditional candidate secondary cell group fails, or if an MCG RLF occurs within six hours after the conditional handover with the conditional candidate secondary cell group is successfully executed, the terminal will re-establish a connection on another PCell that is different from both the source PCell and the target PCell.

10. A method for processing information involving condition switching, characterized in that, Applied to network-side devices, including: Receive terminal sending conditional handover failure information for conditional candidate secondary cell groups; Based on the failure information, determine the failure type of the conditional handover of the conditional candidate secondary cell group.

11. The method according to claim 10, characterized in that, Based on the failure information, determine the failure type of the conditional handover of the conditional candidate secondary cell group, including one of the following: Based on the failure information of the first failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group; Based on the failure information of the MCG failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group; Based on the failure information of MCG failure or SCG failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group.

12. The method according to claim 10 or 11, characterized in that, The failure type includes at least one of the following: The conditional handover of the conditional candidate secondary cell group was executed too late; The conditional handover of the conditional candidate auxiliary cell group was executed too early; The conditions of the candidate auxiliary cell group with conditions were applied to the wrong cell.

13. The method according to claim 10, characterized in that, The method further includes: The first message sent by the receiving terminal; Based on the first information, determine whether to configure conditional handover of conditional candidate secondary cell groups; The first information includes at least one of the following: Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the primary cell PSCell of the secondary cell group; Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met; Information on when the PSCell execution conditions are met, and information on whether the PCell execution conditions are met if the PSCell execution conditions are met. Measurement results when PCell execution conditions are met; Measurement results when PSCell execution conditions are met; The first identification information is used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met; The second identification information is used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met; The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met; The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

14. The method according to claim 13, characterized in that, Determining whether to configure conditional handover of conditional candidate secondary cell groups based on the first information includes: Based on the first information, it is determined that conditional handover of the conditional candidate secondary cell group will not be configured under at least one of the following conditions: There is no overlap between the PCell switching area and the PSCell switching area; The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap. The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group; Conditional handover cannot be configured for the conditional candidate secondary cell group; Configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed.

15. The method according to claim 12, characterized in that, The definition of "conditional handover of conditional candidate secondary cell group is too late" includes the following: The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on measurements, which is a different PSCell from the source PSCell. The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs, and the new PSCell selected is a different PSCell from the source PSCell. The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG RLF occurs, and the terminal re-establishes a connection in a cell different from the source PCell. The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal experiences MCG RLF after a second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

16. The method according to claim 12, characterized in that, The definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following: In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the third time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is the source PSCell. If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within the fourth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on the source PCell.

17. The method according to claim 12, characterized in that, The definition of applying the conditions to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following: In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the fifth time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is another PSCell that is different from the source PSCell and different from the target PSCell. If a conditional handover with a conditional candidate secondary cell group fails, or if an MCG RLF occurs within six hours after the conditional handover with the conditional candidate secondary cell group is successfully executed, the terminal will re-establish a connection on another PCell that is different from both the source PCell and the target PCell.

18. A terminal, characterized in that, include: Memory, transceiver, processor: Memory, used to store computer programs; A transceiver, used to receive and send data under the control of the processor; Processor, configured to read the computer program in the memory and perform the following operations: The failure information of conditional handover of the conditional candidate secondary cell group is sent to the network-side equipment. The failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

19. The terminal according to claim 18, characterized in that, The failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group, including one of the following: The failure information of the first failure is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group; Failure information of MCG failure is used to determine the failure type of conditional handover of the conditional candidate secondary cell group; Failure information for either MCG or SCG failures is used to determine the failure type of the conditional handover for the conditional candidate secondary cell group.

20. The terminal according to claim 18 or 19, characterized in that, The failure type includes at least one of the following: The conditional handover of the conditional candidate secondary cell group was executed too late; The conditional handover of the conditional candidate auxiliary cell group was executed too early; The conditions of the candidate auxiliary cell group with conditions were applied to the wrong cell.

21. The terminal according to claim 18 or 19, characterized in that, The processor is configured to read a computer program from the memory and perform one of the following operations: During the conditional handover process of the conditional candidate secondary cell group, the failure information of the first failure is reported to the network-side device; During the conditional handover process of the conditional candidate secondary cell group, only the failure information of MCG failure is reported to the network-side device; During the conditional handover process of the conditional candidate secondary cell group, failure information of MCG failure or SCG failure is reported to the network side device according to the instruction information of the network side device.

22. The terminal according to claim 18, characterized in that, The processor is used to read the computer program in the memory and perform the following operations: Send first information to the network-side device, the first information being used to determine whether to configure conditional handover with conditional candidate secondary cell group; The first information includes at least one of the following: Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the primary cell PSCell of the secondary cell group; Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met; Information on when the PSCell execution conditions are met, and information on whether the PCell execution conditions are met if the PSCell execution conditions are met. Measurement results when PCell execution conditions are met; Measurement results when PSCell execution conditions are met; The first identification information is used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met; The second identification information is used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met; The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met; The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

23. The terminal according to claim 22, characterized in that, Conditional handover of the conditional candidate secondary cell group shall not be configured in at least one of the following circumstances: There is no overlap between the PCell switching area and the PSCell switching area; The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap. The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group; Conditional handover cannot be configured for the conditional candidate secondary cell group; Configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed.

24. The terminal according to claim 20, characterized in that, The definition of "conditional handover of conditional candidate secondary cell group is too late" includes the following: The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on measurements, which is a different PSCell from the source PSCell. The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs, and the new PSCell selected is a different PSCell from the source PSCell. The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG RLF occurs, and the terminal re-establishes a connection in a cell different from the source PCell. The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal experiences MCG RLF after a second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

25. The terminal according to claim 20, characterized in that, The definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following: In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the third time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is the source PSCell. If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within the fourth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on the source PCell.

26. The terminal according to claim 20, characterized in that, The definition of applying the conditions to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following: In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the fifth time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is another PSCell that is different from the source PSCell and different from the target PSCell. If a conditional handover with a conditional candidate secondary cell group fails, or if an MCG RLF occurs within six hours after the conditional handover with the conditional candidate secondary cell group is successfully executed, the terminal will re-establish a connection on another PCell that is different from both the source PCell and the target PCell.

27. A network-side device, characterized in that, include: Memory, transceiver, processor: Memory, used to store computer programs; A transceiver, used to receive and send data under the control of the processor; Processor, configured to read the computer program in the memory and perform the following operations: Receive terminal sending conditional handover failure information for conditional candidate secondary cell groups; Based on the failure information, determine the failure type of the conditional handover of the conditional candidate secondary cell group.

28. The device according to claim 27, characterized in that, The processor is configured to read a computer program from the memory and perform one of the following operations: Based on the failure information of the first failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group; Based on the failure information of the MCG failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group; Based on the failure information of MCG failure or SCG failure, determine the failure type of the conditional handover of the conditional candidate secondary cell group.

29. The device according to claim 27 or 28, characterized in that, The failure type includes at least one of the following: The conditional handover of the conditional candidate secondary cell group was executed too late; The conditional handover of the conditional candidate auxiliary cell group was executed too early; The conditions of the candidate auxiliary cell group with conditions were applied to the wrong cell.

30. The device according to claim 27, characterized in that, The processor is used to read the computer program in the memory and perform the following operations: The first message sent by the receiving terminal; Based on the first information, determine whether to configure conditional handover of conditional candidate secondary cell groups; The first information includes at least one of the following: Time information for meeting the execution conditions of the primary cell PCell and time information for meeting the execution conditions of the primary cell PSCell of the secondary cell group; Information on the timing of PCell execution conditions being met, and information on whether PSCell execution conditions are met if PCell execution conditions are met; Information on when the PSCell execution conditions are met, and information on whether the PCell execution conditions are met if the PSCell execution conditions are met. Measurement results when PCell execution conditions are met; Measurement results when PSCell execution conditions are met; The first identification information is used to indicate that the PCell execution condition and the PSCell execution condition are not simultaneously met; The second identification information is used to indicate that the measurement result of PSCell is lower than the first value when the PCell execution conditions are met; The third identification information is used to indicate that the PCell measurement result is lower than the second value when the PSCell execution conditions are met; The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

31. The device according to claim 30, characterized in that, The processor is used to read the computer program in the memory and perform the following operations: Based on the first information, it is determined that conditional handover of the conditional candidate secondary cell group will not be configured under at least one of the following conditions: There is no overlap between the PCell switching area and the PSCell switching area; The time when the PCell execution condition is met and the time when the PSCell execution condition is met do not overlap. The coverage area does not meet the execution conditions for the conditional handover of the conditional candidate secondary cell group; Conditional handover cannot be configured for the conditional candidate secondary cell group; Configuration optimization for conditional handover of the conditional candidate secondary cell group cannot be performed.

32. The device according to claim 30, characterized in that, The definition of "conditional handover of conditional candidate secondary cell group is too late" includes the following: The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an SCG failure occurs. The terminal selects a suitable PSCell based on measurements, which is a different PSCell from the source PSCell. The terminal receives the configuration information for conditional handover of the candidate secondary cell group. After the terminal accesses the source PSCell cell and camps stably for the first time, an SCG failure occurs, and the new PSCell selected is a different PSCell from the source PSCell. The terminal receives the configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, an MCG RLF occurs, and the terminal re-establishes a connection in a cell different from the source PCell. The terminal receives configuration information for conditional handover of the conditional candidate secondary cell group. Before the execution conditions for the conditional handover of the conditional candidate secondary cell group are met, the terminal experiences MCG RLF after a second stable camping time in the source cell, and the terminal re-establishes a connection in a cell different from the source cell.

33. The device according to claim 30, characterized in that, The definition of premature conditional handover execution for the conditional candidate secondary cell group includes at least one of the following: In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the third time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is the source PSCell. If PCell access fails during conditional handover of a conditional candidate secondary cell group, or if an MCG RLF occurs within the fourth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection on the source PCell.

34. The device according to claim 30, characterized in that, The definition of applying the conditions to the erroneous cell in the conditional candidate secondary cell group includes at least one of the following: In the case of conditional handover of a conditional candidate secondary cell group, if the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within the fifth time after the conditional handover of the conditional candidate secondary cell group is successful, the appropriate PSCell selected by the terminal based on measurement is another PSCell that is different from the source PSCell and different from the target PSCell. If a conditional handover with a conditional candidate secondary cell group fails, or if an MCG RLF occurs within six hours after the conditional handover with the conditional candidate secondary cell group is successfully executed, the terminal will re-establish a connection on another PCell that is different from both the source PCell and the target PCell.

35. An information processing device for condition switching, characterized in that, include: The first sending unit is used to send failure information of conditional handover of the conditional candidate secondary cell group to the network-side equipment. The failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

36. An information processing device for condition switching, characterized in that, include: The first receiving unit is used to receive the failure information of conditional handover of conditional candidate secondary cell group sent by the terminal; The first determining unit is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group based on the failure information.

37. A processor-readable storage medium, characterized in that, The processor-readable storage medium stores a program for causing the processor to execute the information processing method for conditional switching as described in any one of claims 1 to 10, or to execute the information processing method for conditional switching as described in any one of claims 11 to 17.

Images