Information processing method and apparatus for conditional handover, and terminal and device

Abstract

Provided in the present disclosure are an information processing method and apparatus for a conditional handover, and a terminal and a device. The method comprises: sending failure information of a conditional handover candidate secondary cell group to a network side device, wherein the failure information is used for determining a failure type of the conditional handover candidate secondary cell group.

Description

Information processing method, device, terminal and equipment for conditional handover

[0001] The present disclosure claims priority to the Chinese patent application No. 202411363187.1, filed on September 27, 2024, and entitled "Information processing method, device, terminal and equipment for conditional handover", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the field of communication technology, and in particular to an information processing method, device, terminal and equipment for conditional handover. BACKGROUND

[0003] In a conditional handover candidate secondary cell group (CHO+candidate SCG) process, a master cell group (MCG) failure and a SCG failure can occur in succession, or only one of them can occur. After the MCG failure, the primary cell (PCell) to which the user equipment (UE) re-accesses can be the original PCell, a target PCell or another PCell. From the perspective of the MCG, it can be a late handover, an early handover or a handover to a wrong cell. After the SCG failure, the primary secondary cell (PSCell) of the newly selected secondary cell group can be a late PSCell handover, an early PSCell handover or a PSCell handover to a wrong PSCell.

[0004] Due to the existence of multiple possible handover failure cases, the network side cannot determine the failure type of the CHO+candidate SCG process, and the related art method cannot solve the problem of mobility failure in the CHO+candidate SCG process. SUMMARY

[0005] The present disclosure aims to provide an information processing method, device, terminal and equipment for conditional handover, which solves the problem of mobility failure in the CHO+candidate SCG process.

[0006] An embodiment of the present disclosure provides an information processing method for conditional handover, applied to a terminal, comprising:

[0007] The failure information of the conditional handover of the conditional candidate secondary cell group is sent to a network side device, and the failure information is used to determine a failure type of the conditional handover of the conditional candidate secondary cell group.

[0008] In some embodiments, the failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group, and includes one of:

[0009] The failure information of the first failure occurrence is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0010] The failure information of the MCG failure is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0011] The failure information of the MCG failure or the failure information of the SCG failure is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0012] In some embodiments, the failure type includes at least one of:

[0013] The conditional handover of the conditional candidate secondary cell group is performed too late.

[0014] The conditional handover of the conditional candidate secondary cell group is performed too early.

[0015] The conditional handover of the conditional candidate secondary cell group is performed to an error cell.

[0016] In some embodiments, the failure information of the conditional handover of the conditional candidate secondary cell group is sent to the network side device, and includes one of:

[0017] In the process of the conditional handover of the conditional candidate secondary cell group, the failure information of the first failure occurrence is reported to the network side device.

[0018] In the process of the conditional handover of the conditional candidate secondary cell group, only the failure information of the MCG failure is reported to the network side device.

[0019] In the process of the conditional handover of the conditional candidate secondary cell group, according to indication information of the network side device, the failure information of the MCG failure or the failure information of the SCG failure is reported to the network side device.

[0020] In some embodiments, the method further includes:

[0021] The first information is sent to a network side device, and the first information is used to determine whether to configure the conditional handover of the conditional candidate secondary cell group.

[0022] The first information includes at least one of:

[0023] time information when the PCell execution condition is met, and information whether the PSCell execution condition is met in case the PCell execution condition is met;

[0024] time information when the PCell execution condition is met, and information whether the PSCell execution condition is met in case the PCell execution condition is met;

[0025] time information when the PCell execution condition is met, and information whether the PSCell execution condition is met in case the PCell execution condition is met;

[0026] measurement result when the PCell execution condition is met;

[0027] measurement result when the PCell execution condition is met;

[0028] first identification information, used for indicating that the PCell execution condition and the PSCell execution condition are not met simultaneously;

[0029] second identification information, used for indicating that the measurement result of the PSCell is lower than a first value in case the PCell execution condition is met;

[0030] third identification information, used for indicating that the measurement result of the PCell is lower than a second value in case the PSCell execution condition is met;

[0031] fourth identification information, used for indicating that the PCell switching area and the PSCell switching area have no common coverage area.

[0032] In some embodiments, the conditional handover of the conditional candidate secondary cell group is not configured in at least one of the following cases:

[0033] the PCell switching area and the PSCell switching area have no overlapping area;

[0034] the time when the PCell execution condition is met and the time when the PSCell execution condition is met have no overlap;

[0035] the coverage area cannot meet the execution condition of the conditional handover of the conditional candidate secondary cell group;

[0036] the conditional handover of the conditional candidate secondary cell group cannot be configured;

[0037] the conditional handover of the conditional candidate secondary cell group cannot be configured optimally.

[0038] In some embodiments, the definition of the conditional handover of the conditional candidate secondary cell group being executed too late includes one of the following:

[0039] The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an SCG failure occurs before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, and the suitable PSCell selected by the terminal based on measurement is a PSCell different from the source PSCell.

[0040] The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an SCG failure occurs after the terminal accesses the source PSCell and stably camps for a first time, and the selected new PSCell is a PSCell different from the source PSCell.

[0041] The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an MCG radio link failure (RLF) occurs before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, and the terminal reestablishes connection in a cell different from the source PCell.

[0042] The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an MCG RLF occurs after the terminal stably camps in the source cell for a second time, and the terminal reestablishes connection in a cell different from the source cell.

[0043] In some embodiments, the definition of the conditional handover with the conditional candidate secondary cell group being executed too early includes at least one of the following:

[0044] In the case of executing the conditional handover with the conditional candidate secondary cell group, the conditional handover with the conditional candidate secondary cell group fails to be executed, or PSCell access fails, or an SCG failure occurs within a third time after the conditional handover with the conditional candidate secondary cell group is successfully executed, and the suitable PSCell selected by the terminal based on measurement is the source PSCell.

[0045] In the case of executing the conditional handover with the conditional candidate secondary cell group, PCell access fails, or an MCG RLF occurs within a fourth time after the conditional handover with the conditional candidate secondary cell group is successfully executed, and the terminal reestablishes connection in the source PCell.

[0046] In some embodiments, the definition of the conditional execution to an error cell includes at least one of the following:

[0047] In a case where conditional handover with a conditional candidate secondary cell group is performed, the conditional handover with the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within a fifth time after the conditional handover with the conditional candidate secondary cell group is successfully performed, and the terminal selects a suitable PSCell based on measurement, the suitable PSCell is a PSCell different from the source PSCell and different from the target PSCell;

[0048] In a case where conditional handover with a conditional candidate secondary cell group is performed, PCell access fails, or MCG RLF occurs within a sixth time after the conditional handover with the conditional candidate secondary cell group is successfully performed, and the terminal re-establishes a connection with a PCell different from the source PCell and different from the target PCell.

[0049] Embodiments of the present disclosure provide a method for processing information of conditional handover, applied to a network side device, comprising:

[0050] Receiving failure information of conditional handover with a conditional candidate secondary cell group sent by a terminal;

[0051] According to the failure information, determining a failure type of the conditional handover with the conditional candidate secondary cell group.

[0052] In some embodiments, according to the failure information, determining the failure type of the conditional handover with the conditional candidate secondary cell group comprises one of the following:

[0053] According to the failure information of the first failure, determining the failure type of the conditional handover with the conditional candidate secondary cell group;

[0054] According to the failure information of MCG failure, determining the failure type of the conditional handover with the conditional candidate secondary cell group;

[0055] According to the failure information of MCG failure or the failure information of SCG failure, determining the failure type of the conditional handover with the conditional candidate secondary cell group.

[0056] In some embodiments, the failure type comprises at least one of the following:

[0057] Conditional handover with a conditional candidate secondary cell group is performed too late;

[0058] Conditional handover with a conditional candidate secondary cell group is performed too early;

[0059] Conditional execution with a conditional candidate secondary cell group is performed to an error cell.

[0060] In some embodiments, the method further comprises:

[0061] Receiving first information sent by a terminal;

[0062] determining whether to configure a conditional handover with a conditional candidate secondary cell group according to the first information;

[0063] The first information includes at least one of the following:

[0064] time information of a PCell execution condition being met and time information of a PSCell execution condition being met;

[0065] time information of a PCell execution condition being met and information of whether a PSCell execution condition is met in the case of the PCell execution condition being met;

[0066] time information of a PSCell execution condition being met and information of whether a PCell execution condition is met in the case of the PSCell execution condition being met;

[0067] a measurement result when the PCell execution condition is met;

[0068] a measurement result when the PSCell execution condition is met;

[0069] first identification information for indicating that the PCell execution condition and the PSCell execution condition are not met at the same time;

[0070] second identification information for indicating that a measurement result of the PSCell is lower than a first value in the case of the PCell execution condition being met;

[0071] third identification information for indicating that a measurement result of the PCell is lower than a second value in the case of the PSCell execution condition being met;

[0072] fourth identification information for indicating that there is no common coverage area between a PCell handover area and a PSCell handover area.

[0073] In some embodiments, the determining whether to configure a conditional handover with a conditional candidate secondary cell group according to the first information includes:

[0074] determining not to configure the conditional handover with the conditional candidate secondary cell group according to the first information in at least one of the following cases:

[0075] there is no overlapping area between a PCell handover area and a PSCell handover area;

[0076] there is no overlap between a time of a PCell execution condition being met and a time of a PSCell execution condition being met;

[0077] a coverage area cannot meet an execution condition of the conditional handover with the conditional candidate secondary cell group.

[0078] The conditional handover of the conditional candidate secondary cell group cannot be configured;

[0079] The configuration optimization of the conditional handover of the conditional candidate secondary cell group cannot be performed.

[0080] In some embodiments, the definition of the conditional handover of the conditional candidate secondary cell group being executed too late includes one of the following:

[0081] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an SCG failure occurs before the execution condition of the conditional handover of the conditional candidate secondary cell group is met, and the suitable PSCell selected by the terminal based on measurement is another PSCell different from the source PSCell;

[0082] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an SCG failure occurs after the terminal accesses the source PSCell cell and stably camps for a first time, and the selected new PSCell is another PSCell different from the source PSCell;

[0083] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an MCG RLF occurs before the execution condition of the conditional handover of the conditional candidate secondary cell group is met, and the terminal re-establishes connection in a cell different from the source PCell;

[0084] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an MCG RLF occurs after the terminal stably camps for a second time in the source cell before the execution condition of the conditional handover of the conditional candidate secondary cell group is met, and the terminal re-establishes connection in a cell different from the source cell.

[0085] In some embodiments, the definition of the conditional handover of the conditional candidate secondary cell group being executed too early includes at least one of the following:

[0086] In the case of performing the conditional handover of the conditional candidate secondary cell group, the conditional handover of the conditional candidate secondary cell group fails to be executed, or PSCell access fails, or an SCG failure occurs within a third time after the conditional handover of the conditional candidate secondary cell group is successfully executed, and the suitable PSCell selected by the terminal based on measurement is the source PSCell;

[0087] In the case of performing the conditional handover of the conditional candidate secondary cell group, PCell access fails, or an MCG RLF occurs within a fourth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, and the terminal re-establishes connection in the source PCell.

[0088] In some embodiments, the definition of the condition of the conditional candidate secondary cell group performing to an error cell comprises at least one of the following:

[0089] In a case where the conditional candidate secondary cell group performs conditional handover, the conditional candidate secondary cell group fails to perform conditional handover, or PSCell access fails, or SCG failure occurs within a fifth time after the conditional candidate secondary cell group successfully performs conditional handover, and the terminal selects a suitable PSCell based on measurement, which is different from the source PSCell and different from the target PSCell;

[0090] In a case where the conditional candidate secondary cell group performs conditional handover, PCell access fails, or MCG RLF occurs within a sixth time after the conditional candidate secondary cell group successfully performs conditional handover, and the terminal re-establishes a connection with another PCell different from the source PCell and different from the target PCell.

[0091] Embodiments of the present disclosure provide a terminal, comprising: a memory, a transceiver, a processor:

[0092] The memory is configured to store a computer program; the transceiver is configured to receive and send data under the control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0093] The terminal sends failure information of the conditional candidate secondary cell group to the network side device, and the failure information is used to determine a failure type of the conditional candidate secondary cell group.

[0094] In some embodiments, the failure information is used to determine the failure type of the conditional candidate secondary cell group, and comprises one of the following:

[0095] The failure information of the first failure is used to determine the failure type of the conditional candidate secondary cell group;

[0096] The failure information of MCG failure is used to determine the failure type of the conditional candidate secondary cell group;

[0097] The failure information of MCG failure or the failure information of SCG failure is used to determine the failure type of the conditional candidate secondary cell group.

[0098] In some embodiments, the failure type comprises at least one of the following:

[0099] The conditional candidate secondary cell group performs conditional handover too late;

[0100] The conditional candidate secondary cell group performs conditional handover too early;

[0101] Conditional execution of a candidate secondary cell group with a condition to an error cell.

[0102] In some embodiments, the processor is configured to read a computer program in the memory and perform one of the following operations:

[0103] In a conditional handover process of a candidate secondary cell group with a condition, report failure information of a first failure to the network side device;

[0104] In a conditional handover process of a candidate secondary cell group with a condition, report failure information of MCG failure to the network side device only;

[0105] In a conditional handover process of a candidate secondary cell group with a condition, according to the indication information of the network side device, report failure information of MCG failure or failure information of SCG failure to the network side device.

[0106] In some embodiments, the processor is configured to read a computer program in the memory and perform the following operations:

[0107] Send first information to the network side device, the first information is used to determine whether to configure a conditional handover of a candidate secondary cell group with a condition;

[0108] The first information includes at least one of the following:

[0109] Time information of PCell execution condition and time information of PSCell execution condition of the secondary cell group;

[0110] Time information of PCell execution condition, and information of whether PSCell execution condition is met in the case of PCell execution condition being met;

[0111] Time information of PSCell execution condition, and information of whether PCell execution condition is met in the case of PSCell execution condition being met;

[0112] Measurement result when PCell execution condition is met;

[0113] Measurement result when PSCell execution condition is met;

[0114] First identification information, used to indicate that PCell execution condition and PSCell execution condition are not met at the same time;

[0115] Second identification information, used to indicate that the measurement result of PSCell is lower than the first value in the case of PCell execution condition being met;

[0116] The third identification information is used to indicate that the measurement result of the PCell is lower than the second value when the PSCell execution condition is met.

[0117] The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

[0118] In some embodiments, the conditional handover of the conditional candidate secondary cell group is not configured in at least one of the following cases:

[0119] The PCell switching area and the PSCell switching area have no overlapping area;

[0120] The time when the PCell execution condition is met and the time when the PSCell execution condition is met have no overlap;

[0121] The coverage area cannot meet the execution condition of the conditional handover of the conditional candidate secondary cell group;

[0122] The conditional handover of the conditional candidate secondary cell group cannot be configured;

[0123] The conditional handover of the conditional candidate secondary cell group cannot be configured optimally.

[0124] In some embodiments, the definition of the conditional handover of the conditional candidate secondary cell group being too late includes one of the following:

[0125] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an SCG failure occurs before the execution condition of the conditional handover of the conditional candidate secondary cell group is met, and the suitable PSCell selected by the terminal based on measurement is another PSCell different from the source PSCell;

[0126] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an SCG failure occurs after the terminal accesses the source PSCell cell and stably camps for a first time, and the selected new PSCell is another PSCell different from the source PSCell;

[0127] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an MCG RLF occurs before the execution condition of the conditional handover of the conditional candidate secondary cell group is met, and the terminal reestablishes connection in a cell different from the source PCell;

[0128] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an MCG RLF occurs after the terminal stably camps in the source cell for a second time before the execution condition of the conditional handover of the conditional candidate secondary cell group is met, and the terminal reestablishes connection in a cell different from the source cell.

[0129] In some embodiments, the definition of the conditional execution of the conditional candidate secondary cell group includes at least one of the following:

[0130] In the case of executing the conditional candidate secondary cell group, the conditional execution of the conditional candidate secondary cell group fails, or the PSCell access fails, or the SCG failure occurs within a third time after the successful execution of the conditional candidate secondary cell group, and the suitable PSCell selected by the terminal based on the measurement is the source PSCell;

[0131] In the case of executing the conditional candidate secondary cell group, the PCell access fails, or the MCG RLF occurs within a fourth time after the successful execution of the conditional candidate secondary cell group, and the terminal reestablishes the connection in the source PCell.

[0132] In some embodiments, the definition of the conditional execution of the conditional candidate secondary cell group to an error cell includes at least one of the following:

[0133] In the case of executing the conditional candidate secondary cell group, the conditional execution of the conditional candidate secondary cell group fails, or the PSCell access fails, or the SCG failure occurs within a fifth time after the successful execution of the conditional candidate secondary cell group, and the suitable PSCell selected by the terminal based on the measurement is a PSCell different from the source PSCell and different from the target PSCell;

[0134] In the case of executing the conditional candidate secondary cell group, the PCell access fails, or the MCG RLF occurs within a sixth time after the successful execution of the conditional candidate secondary cell group, and the terminal reestablishes the connection in a PCell different from the source PCell and different from the target PCell.

[0135] Embodiments of the present disclosure provide a network side device, comprising: a memory, a transceiver, and a processor:

[0136] The memory is configured to store a computer program; the transceiver is configured to receive and send data under the control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0137] Receiving failure information of the conditional candidate secondary cell group sent by the terminal;

[0138] According to the failure information, determining the failure type of the conditional candidate secondary cell group.

[0139] In some embodiments, the processor is configured to read a computer program in the memory and perform one of the following operations:

[0140] determine a failure type of the conditional handover of the conditional candidate secondary cell group according to the failure information of the first failure;

[0141] determine a failure type of the conditional handover of the conditional candidate secondary cell group according to the failure information of the MCG failure;

[0142] determine a failure type of the conditional handover of the conditional candidate secondary cell group according to the failure information of the MCG failure or the failure information of the SCG failure.

[0143] In some embodiments, the failure type comprises at least one of the following:

[0144] the conditional handover of the conditional candidate secondary cell group is performed too late;

[0145] the conditional handover of the conditional candidate secondary cell group is performed too early;

[0146] the conditional handover of the conditional candidate secondary cell group is performed to a wrong cell.

[0147] In some embodiments, the processor is configured to read a computer program in the memory and perform the following operations:

[0148] receive first information sent by a terminal;

[0149] determine whether to configure the conditional handover of the conditional candidate secondary cell group according to the first information;

[0150] The first information comprises at least one of the following:

[0151] time information of a PCell execution condition being met and time information of a PSCell execution condition of a secondary cell group being met;

[0152] time information of a PCell execution condition being met and information of whether a PSCell execution condition is met in the case of the PCell execution condition being met;

[0153] time information of a PSCell execution condition being met and information of whether a PCell execution condition is met in the case of the PSCell execution condition being met;

[0154] a measurement result when the PCell execution condition is met;

[0155] a measurement result when the PSCell execution condition is met;

[0156] The first identification information is used for indicating that the PCell execution condition and the PSCell execution condition are not satisfied simultaneously.

[0157] The second identification information is used for indicating that, in the case of satisfying the PCell execution condition, the measurement result of the PSCell is lower than the first value.

[0158] The third identification information is used for indicating that, in the case of satisfying the PSCell execution condition, the measurement result of the PCell is lower than the second value.

[0159] The fourth identification information is used for indicating that the PCell switching area and the PSCell switching area have no common coverage area.

[0160] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0161] According to the first information, it is determined that the conditional handover of the conditional candidate secondary cell group is not configured in at least one of the following cases:

[0162] The PCell switching area and the PSCell switching area have no overlapping area;

[0163] The time of satisfying the PCell execution condition and the time of satisfying the PSCell execution condition have no overlap;

[0164] The coverage area cannot satisfy the execution condition of the conditional handover of the conditional candidate secondary cell group;

[0165] The conditional handover of the conditional candidate secondary cell group cannot be configured;

[0166] The conditional handover of the conditional candidate secondary cell group cannot be configured optimally.

[0167] In some embodiments, the definition of the conditional handover of the conditional candidate secondary cell group being too late includes one of the following:

[0168] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an SCG failure occurs before the execution condition of the conditional handover of the conditional candidate secondary cell group is satisfied, and the suitable PSCell selected by the terminal based on measurement is another PSCell different from the source PSCell;

[0169] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an SCG failure occurs after the terminal accesses the source PSCell cell and stably resides for the first time, and the selected new PSCell is another PSCell different from the source PSCell;

[0170] The terminal receives configuration information of conditional handover with a conditional candidate secondary cell group, an MCG RLF occurs before execution conditions of the conditional handover with the conditional candidate secondary cell group are met, and the terminal re-establishes connection in a cell different from a source PCell.

[0171] The terminal receives configuration information of conditional handover with a conditional candidate secondary cell group, an MCG RLF occurs after the terminal stably camps in a source cell for a second time before execution conditions of the conditional handover with the conditional candidate secondary cell group are met, and the terminal re-establishes connection in a cell different from the source cell.

[0172] In some embodiments, the definition of the conditional handover with the conditional candidate secondary cell group being executed too early includes at least one of the following:

[0173] In the case of executing the conditional handover with the conditional candidate secondary cell group, the conditional handover with the conditional candidate secondary cell group fails to be executed, or PSCell access fails, or SCG failure occurs within a third time after the conditional handover with the conditional candidate secondary cell group is successfully executed, and the terminal selects a suitable PSCell based on measurement is the source PSCell.

[0174] In the case of executing the conditional handover with the conditional candidate secondary cell group, PCell access fails, or MCG RLF occurs within a fourth time after the conditional handover with the conditional candidate secondary cell group is successfully executed, and the terminal re-establishes connection in a source PCell.

[0175] In some embodiments, the definition of the conditional execution with the conditional candidate secondary cell group to an error cell includes at least one of the following:

[0176] In the case of executing the conditional handover with the conditional candidate secondary cell group, the conditional handover with the conditional candidate secondary cell group fails to be executed, or PSCell access fails, or SCG failure occurs within a fifth time after the conditional handover with the conditional candidate secondary cell group is successfully executed, and the terminal selects a suitable PSCell based on measurement is a PSCell different from the source PSCell and different from a target PSCell.

[0177] In the case of executing the conditional handover with the conditional candidate secondary cell group, PCell access fails, or MCG RLF occurs within a sixth time after the conditional handover with the conditional candidate secondary cell group is successfully executed, and the terminal re-establishes connection in a PCell different from the source PCell and different from the target PCell.

[0178] Embodiments of the present disclosure provide a kind of information processing device of conditional handover, comprising:

[0179] The first sending unit is configured to send, to a network side device, failure information of the conditional handover of the candidate secondary cell group with conditions, and the failure information is used to determine a failure type of the conditional handover of the candidate secondary cell group with conditions.

[0180] Embodiments of the present disclosure provide an information processing apparatus for conditional handover, comprising:

[0181] The first receiving unit is configured to receive failure information of the conditional handover of the candidate secondary cell group with conditions sent by a terminal.

[0182] The first determining unit is configured to determine, according to the failure information, a failure type of the conditional handover of the candidate secondary cell group with conditions.

[0183] Embodiments of the present disclosure provide a processor readable storage medium having a computer program stored thereon, and the program is used to make the processor execute the information processing method for conditional handover described above.

[0184] The above technical solutions of the present disclosure have the following beneficial effects:

[0185] Embodiments of the present disclosure, for the conditional handover of the candidate secondary cell group with conditions, the terminal reports failure information of the conditional handover to a network side device, so that the network side device can determine a failure type of the conditional handover of the candidate secondary cell group with conditions based on the failure information, and then make corresponding mobility configuration according to the determined failure type, so as to realize more accurate MRO, improve the handover success rate, and improve the network index. BRIEF DESCRIPTION OF DRAWINGS

[0186] FIG. 1 shows a schematic diagram of a control plane structure of dual connectivity;

[0187] FIG. 2 shows a schematic diagram of one of the flow of the information processing method for conditional handover according to an embodiment of the present disclosure;

[0188] FIG. 3 shows a schematic diagram of a handover scenario according to an embodiment of the present disclosure;

[0189] FIG. 4 shows a schematic diagram of another of the flow of the information processing method for conditional handover according to an embodiment of the present disclosure;

[0190] FIG. 5 shows a schematic diagram of one of the structure of the information processing apparatus for conditional handover according to an embodiment of the present disclosure;

[0191] FIG. 6 shows a schematic diagram of another of the structure of the information processing apparatus for conditional handover according to an embodiment of the present disclosure;

[0192] FIG. 7 shows a schematic diagram of the structure of a terminal according to an embodiment of the present disclosure;

[0193] FIG. 8 shows a schematic diagram of the structure of a network side device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0194] To make the technical problems to be solved by the present disclosure, technical solutions and advantages clearer, the following will be described in detail in conjunction with the drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help understand the embodiments of the present disclosure. 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 the present disclosure. In addition, in order to be clear and concise, the description of known functions and structures is omitted.

[0195] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present disclosure. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0196] In various embodiments of the present disclosure, it should be understood that the size of the serial number of the following processes does not mean the order of execution, and the execution order of the processes should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure.

[0197] In the embodiments of the present disclosure, the term "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents a "or" relationship between the associated objects before and after it.

[0198] In the embodiments of the present disclosure, the term "a plurality of" means two or more, and other quantifiers are similar.

[0199] The technical solutions in the embodiments of the present disclosure will be described clearly and completely in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present disclosure.

[0200] In the description of the embodiments of the present disclosure, first, some concepts used in the following description are explained.

[0201] I. Multi-Radio Dual Connectivity (MR-DC) network architecture.

[0202] In a multi-connectivity architecture, a user equipment (UE) can be connected to one master node (MN) and to one or more secondary nodes (SNs), and performs signaling and / or data exchange with these network nodes. Both 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 can be referred to as dual connectivity (DC).

[0203] When the UE is in a connected state, it can be connected to one or more network side nodes, and the network nodes can be in one or more radio access technologies (RATs). For example, when the MN is an LTE node and the SN is an NR node, it is (Next Generation (NG)) evolved universal terrestrial radio access (E-UTRA NR Dual Connectivity (EN-DC) dual connectivity; when the MN is an NR node and the SN is an LTE node, it is NE-DC dual connectivity; and when both the MN and the SN are NR nodes, it is NR-NR-DC.

[0204] The control plane structure of dual connectivity is shown in FIG. 1. A secondary cell group (SCG) is a group of serving cells under an SN node under MR-DC, including one PSCell and possibly one or more Scells.

[0205] II. Mobility enhancement

[0206] CHO conditional synchronization reconfiguration refers to: the network side issues a synchronization reconfiguration command to the terminal in advance, and the terminal does not immediately initiate a synchronization reconfiguration procedure in the synchronization reconfiguration target cell after receiving the conditional synchronization reconfiguration command, but saves the configuration in the synchronization reconfiguration command, and initiates a synchronization reconfiguration procedure in the target cell after meeting the conditions configured in the synchronization reconfiguration command. One conditional synchronization reconfiguration command allows the configuration of synchronization reconfiguration of one or more target cells.

[0207] Considering the wish to select a suitable PSCell access as much as possible when CHO is performed, the NR mobility project discusses conditional handover with candidate secondary cell group (CHO+candidate SCG), that is, multiple candidate PSCell configurations can be configured for each candidate PCell when configuring the CHO configuration. For the case where multiple candidate PSCell configurations are associated with a certain candidate PCell configuration, the network side can provide multiple CHO configurations for this candidate PCell, and each CHO configuration corresponds to a different candidate SCG configuration. The network side associates the execution condition of the PCell and the execution condition of the associated PSCell for each conditional reconfiguration configuration. Only when the PCell and PSCell execution conditions are met at the same time, the UE executes the CHO+candidate SCG configuration, accesses the candidate target PCell and the candidate target PSCell. Otherwise, the UE does not execute the CHO+candidate SCG and continues to evaluate.

[0208] Three, Mobility Robustness Optimization (MRO).

[0209] MRO is mainly used to solve the failure problem in terminal mobility process, and assist network optimization. When the terminal occurs handover failure or RLF (Radio Link Failure), the terminal will measure the frequency points configured by measurement and record the measurement results, and the terminal will also record the related information such as random access, handover and re-establishment. After the terminal fails to handover, the terminal selects a cell, re-establishes the RRC (Radio Resource Control) connection or establishes the RRC connection to re-access the network, and notifies the network that the information such as radio link failure or handover failure is retained at the terminal side, which is obtained by the network side from the terminal when needed, and used for network optimization of the network side.

[0210] Four, RLF report and air interface SCG failure information message.

[0211] If the MCG occurs radio link failure or handover failure, the UE generates the RLF report; if the SCG occurs radio link failure or PSCell addition / transform failure, the UE sends the SCG failure information message to the MN node.

[0212] Embodiments of the present disclosure provide an information processing method, device, terminal and equipment for conditional handover, to solve the problem of mobility failure in the CHO+candidate SCG process.

[0213] The method and the device are based on the same application concept, and the device and the method can be referred to each other for implementation because the principles of solving problems are similar, and repeated parts will not be described again.

[0214] As shown in FIG. 2, the embodiment of the disclosure provides an information processing method for conditional switching, applied to a terminal, and specifically includes the following steps:

[0215] In step 201, failure information of conditional switching with a candidate secondary cell group (CHO+candidate SCG) is sent to a network side device, and the failure information is used to determine a failure type of the conditional switching with the candidate secondary cell group.

[0216] In this embodiment, when the CHO+candidate SCG process is performed, if a switching failure occurs, the terminal sends failure information to the network side device. The failure can include MCG failure and / or SCG failure, and the failure information can include related information of the MCG failure and / or related information of the SCG failure. The MCG failure can include radio link failure and / or switching failure on the MCG, such as PCell switching failure and RLF on the MCG; and the SCG failure can include radio link failure on the SCG and / or synchronization reconfiguration failure on the SCG, such as PSCell addition failure, PSCell transformation failure and RLF on the SCG.

[0217] The failure information can be used to determine the failure type of the CHO+candidate SCG, and can also be understood as being used to define the failure type of the CHO+candidate SCG. For example, the network side device can determine (or define) the type of failure that occurs in the CHO+candidate SCG process according to the failure information, so that MRO can be performed for the determined failure type, targeted optimization is achieved, and mobility problems are more accurately solved.

[0218] In the embodiment of the disclosure, for conditional switching with a candidate secondary cell group, the terminal reports 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 with the candidate secondary cell group based on the failure information, perform corresponding mobility configuration for the determined failure type, achieve more accurate MRO, improve the switching success rate, and improve network indicators.

[0219] In some embodiments, the failure information is used to determine the failure type of the conditional switching with the candidate secondary cell group, including one of the following:

[0220] (1) Failure information of the first failure, used to determine the failure type of the conditional switching with the candidate secondary cell group;

[0221] In this embodiment, the "first failure" refers to, for example, a failure that occurs first after the terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, such as an MCG failure that occurs first, or an SCG failure that occurs first. For example, after the terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an MCG failure occurs first, and then an SCG failure occurs. In this case, the first failure refers to the MCG failure. For another example, after the terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an SCG failure occurs first, and then an MCG failure occurs. In this case, the first failure refers to the SCG failure.

[0222] In this case, the terminal can report only the failure information of the first failure to the network side device, and the network side device determines the failure type of the CHO+candidate SCG according to the failure information of the first failure. In some embodiments, the terminal can also report the failure information of each failure to the terminal, but the network side device determines the failure type of the CHO+candidate SCG according to only the failure information of the first failure.

[0223] (2) Failure information of the MCG failure, used to determine the failure type of the conditional handover with the conditional candidate secondary cell group.

[0224] In this embodiment, the terminal can report only the failure information of the MCG failure to the network side device, and the network side device determines the failure type of the CHO+candidate SCG according to the failure information of the MCG failure. In some embodiments, the terminal can also report the failure information of each failure to the terminal, but the network side device determines the failure type of the CHO+candidate SCG according to only the failure information of the MCG failure.

[0225] For example, an MCG failure occurs in the CHO+candidate SCG process, the terminal reports the failure information of the MCG failure to the network side device, and then an SCG failure occurs. In this case, the terminal can not send the failure information of the SCG failure, or can send the failure information of the SCG failure. For another example, an SCG failure occurs in the CHO+candidate SCG process, the terminal can not report the failure information of the SCG failure to the network side device, and then an MCG failure occurs. In this case, the terminal reports the failure information of the MCG failure to the network side device.

[0226] (3) Failure information of the MCG failure or failure information of the SCG failure, used to determine the failure type of the conditional handover with the conditional candidate secondary cell group.

[0227] In this embodiment, the terminal can send the failure information of MCG failure to the network side device, can send the failure information of SCG failure to the network side device, or can send the failure information of MCG failure and the failure information of SCG failure to the network side device, and the network side device can determine the failure type of CHO+candidate SCG according to the failure information of MCG failure or the failure information of SCG failure. The network side device can select according to which information to determine the failure type.

[0228] In some embodiments, the terminal sends the failure information of the conditional handover of the conditional candidate secondary cell group to the network side device, including one of the following:

[0229] 1) In the conditional handover of the conditional candidate secondary cell group, the terminal reports the failure information of the first failure to the network side device.

[0230] In this embodiment, the terminal sends the failure information of the first failure to the network side device, for example, if MCG failure occurs first, the UE reports the RLF report, and if SCG failure occurs later, the UE can choose not to send the SCG failure information message.

[0231] For another example, if SCG failure occurs first, the UE sends the SCG failure information message, and if MCG failure occurs later, the UE can choose not to generate the RLF report.

[0232] The network side device determines the failure type of CHO+candidate SCG according to the failure information of the first failure sent by the terminal.

[0233] 2) In the conditional handover of the conditional candidate secondary cell group, the terminal only reports the failure information of MCG failure to the network side device.

[0234] In this embodiment, the terminal can send the failure information of MCG failure to the network side device, and does not send the failure information of SCG failure. For example, for the failure occurring in the CHO+candidate SCG process, the terminal only sends the RLF report recorded after MCG failure, and does not send the SCG failure information message after SCG failure. The network side device determines the failure type of CHO+candidate SCG according to the failure information of MCG failure.

[0235] 3) In the conditional handover of the conditional candidate secondary cell group, the terminal reports the failure information of MCG failure or the failure information of SCG failure to the network side device according to the indication information of the network side device.

[0236] In this embodiment, the network side device can select which failure information to use to determine the failure type. The network side device can indicate the used failure information to the terminal, and the terminal reports the corresponding failure information according to the indication of the network side. For example, the network side device can send MCG or SCG indication information to the UE. If the UE receives the MCG indication information, it only sends the RLF report recorded after the MCG failure, and does not send the SCG failure information message after the SCG failure. If the UE receives the SCG indication information, it only sends the SCG failure information message after the SCG failure, and does not record the RLF report after the MCG failure.

[0237] As an optional embodiment, the failure type includes at least one of the following:

[0238] (1) The conditional handover with conditional candidate secondary cell group is executed too late; it can also be understood as too late CHO + candidate SCG execution.

[0239] (2) The conditional handover with conditional candidate secondary cell group is executed too early; it can also be understood as too early CHO + candidate SCG execution.

[0240] (3) The conditional execution with conditional candidate secondary cell group is executed to an error cell.

[0241] In this embodiment, MCG failure or SCG failure may occur during the CHO + candidate SCG execution process, or both of the above failures occur, and the terminal reports the failure information during the CHO + candidate SCG execution process to the network side device. The network side device can determine the failure type of the CHO + candidate SCG to be any of the above according to the failure information. For example, the network side device determines the failure type of the CHO + candidate SCG to be any of the above according to the failure information of the first failure, or the network side device determines the failure type of the CHO + candidate SCG to be any of the above according to the failure information of the MCG failure, or the network side device determines the failure type of the CHO + candidate SCG to be any of the above according to the failure information of the SCG failure.

[0242] In some embodiments, the definition of the conditional handover with conditional candidate secondary cell group executed too late includes one of the following:

[0243] 11) The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, SCG failure occurs, and the suitable PSCell selected by the terminal based on measurement is another PSCell different from the source PSCell;

[0244] In this embodiment, the CHO+candidate SCG is executed too late or the CHO+candidate SCG executed too late can be defined as: the UE receives the CHO+candidate SCG configuration, before the execution condition is met, SCG RLF occurs, and the suitable PSCell selected based on measurement is another PSCell different from the source PSCell. SCG RLF occurs first, and then MCG RLF may or may not occur.

[0245] 12) The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, the terminal accesses the source PSCell cell and stably camps for a first time, SCG failure occurs, and the new PSCell selected is another PSCell different from the source PSCell;

[0246] In this embodiment, the CHO+candidate SCG executed too late or the CHO+candidate SCG executed too late can be combined with the description of the late secondary cell group (PSCell) addition and change (CPAC) execution, for example: the terminal accesses the source PSCell cell and stably camps for a period of time, and then SCG failure occurs, and the suitable PSCell selected is not the source PSCell. Alternatively, the description can be added to the description of the late CPAC execution: the description also applies to the CHO+candidate SCG; or, the description can be added to the description of the late CPAC execution: the UE receives the CHO+candidate SCG configuration, before the execution condition of the CHO+candidate SCG is met, SCG RLF occurs. Alternatively, the description can be added to the description of the late CPAC execution: SCG RLF occurs first, and then MCG RLF may or may not occur.

[0247] This embodiment does not limit the specific length of time of the first time, which represents the duration of the terminal camping on the source PSCell.

[0248] 13) The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, MCG RLF occurs, and the terminal re-establishes connection in a cell different from the source PCell;

[0249] In this embodiment, CHO+candidate SCG execution too late or late CHO+candidate SCG can be defined as: the UE receives CHO+candidate SCG configuration, before the execution condition is met, MCG RLF occurs, and the UE attempts to establish a connection in a cell different from the original PCell. MCG RLF occurs first, and then SCG RLF may or may not occur.

[0250] 14) The terminal receives configuration information of conditional handover with a conditional candidate secondary cell group, before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, the terminal occurs MCG RLF after stably camping on the source cell for a second time, and the terminal re-establishes connection in a cell different from the source cell.

[0251] In this embodiment, CHO+candidate SCG execution too late or late CHO+candidate SCG can be described as late handover, for example: the terminal occurs radio link failure after stably camping on the source cell for a period of time, and the terminal attempts to establish a connection in a different cell. Alternatively, the description can be added to the description of late handover: the description also applies to CHO+candidate SCG; or the description can be added to the description of late handover: CHO+candidate SCG has been configured before the connection failure occurs, but the execution has not been triggered; or the description can be added to the description of late handover: MCG RLF occurs first, and then SCG RLF may or may not occur.

[0252] This embodiment does not limit the specific length of time of the second time, which represents the length of time that the terminal camps on the source cell.

[0253] In some embodiments, the definition of the conditional handover with the conditional candidate secondary cell group being executed too early includes at least one of the following:

[0254] 21) In the case of executing conditional handover with a conditional candidate secondary cell group, the conditional handover with the conditional candidate secondary cell group fails to execute, or PSCell access fails, or SCG failure occurs within a third time after the conditional handover with the conditional candidate secondary cell group executes successfully, and the terminal selects the source PSCell based on the measurement of the suitable PSCell;

[0255] In this embodiment, CHO+candidate SCG execution too early or CHO+candidate SCG execution too early can be defined as: PSCell access fails when CHO+candidate SCG is executed, or SCG RLF occurs soon after CHO+candidate SCG execution succeeds, and the suitable PSCell selected based on measurement is the source PSCell.

[0256] Wherein, PSCell access fails when CHO+candidate SCG is executed, at this time PCell may access successfully or access failure. SCG RLF occurs soon after CHO+candidate SCG execution succeeds, and then MCG RLF may occur or not.

[0257] This embodiment does not limit the specific length of time of the third time, which represents the time length from the execution of the conditional handover to the occurrence of SCG failure, and can also be understood as representing the time length from the start of the execution of the conditional handover to the occurrence of SCG failure.

[0258] Alternatively, CHO+candidate SCG execution too early or CHO+candidate SCG execution too early can also reuse the description of early CPAC execution, for example: the terminal fails to access the target PSCell cell during PSCell transformation, or successfully accesses the target PSCell cell but soon SCG failure occurs, and the newly selected suitable PSCell is the source PSCell. Alternatively, on the basis of the description of early CPAC execution, the description is added: this description also applies to CHO+candidate SCG; or, on the basis of the description of early CPAC execution, the description is added: CHO+candidate SCG execution fails, or PSCell access fails, or SCG RLF occurs soon after CHO+candidate SCG execution succeeds; or, on the basis of the description of early CPAC execution, the description is added: SCG RLF occurs first, and then MCG RLF may occur or not.

[0259] 22) In the case of executing conditional handover with conditional candidate secondary cell group, PCell access fails, or MCG RLF occurs within the fourth time after the execution of the conditional handover with conditional candidate secondary cell group succeeds, and the terminal reestablishes connection in the source PCell.

[0260] In this embodiment, the CHO+candidate SCG execution too early or the CHO+candidate SCG execution too early can be defined as: the PCell access fails when the CHO+candidate SCG is executed, or the MCG RLF occurs soon after the CHO+candidate SCG is executed successfully, and the UE attempts to establish a connection in the cell of the original PCell. The PCell access fails when the CHO+candidate SCG is executed, and the PSCell may succeed or fail to access.

[0261] The MCG RLF occurs soon after the CHO+candidate SCG is executed successfully, and then the SCG RLF may or may not occur.

[0262] Alternatively, the CHO+candidate SCG execution too early or the CHO+candidate SCG execution too early can also be described as the early handover, for example: the terminal fails to access the target cell during the handover process, or succeeds in accessing the target cell but soon experiences a radio link failure, and the terminal attempts to establish a connection in the source cell. Alternatively, on the basis of the description of the early handover, the description is added: the description also applies to the CHO+candidate SCG; or, on the basis of the description of the early handover, the description is added: the CHO+candidate SCG execution fails, or the handover fails, or the RLF occurs soon after the CHO+candidate SCG is executed successfully; or, on the basis of the description of the early handover, the description is added: the MCG RLF occurs first, and then the SCG RLF may or may not occur.

[0263] This embodiment does not limit the specific length of time of the fourth time, which represents the time length from the execution of the conditional handover to the occurrence of the MCG failure, and can also be understood as representing the time length from the start of the execution of the conditional handover to the occurrence of the MCG failure.

[0264] In some embodiments, the definition of the conditional execution of the conditional candidate secondary cell group to an error cell includes at least one of the following:

[0265] 31) In the case of executing the conditional handover of the conditional candidate secondary cell group, the conditional handover of the conditional candidate secondary cell group fails, or the PSCell access fails, or the SCG failure occurs within a fifth time after the conditional handover of the conditional candidate secondary cell group is executed successfully, and the terminal selects a suitable PSCell based on measurement, which is other than the source PSCell and different from the target PSCell;

[0266] In this embodiment, the definition of the condition execution of the conditional candidate secondary cell group to an error cell can be: PSCell access failure during CHO+candidate SCG execution or SCG RLF occurs soon after CHO+candidate SCG execution succeeds, and the suitable PSCell selected based on measurement is a PSCell other than the source PSCell and the target PSCell. PSCell access failure during CHO+candidate SCG execution, at this time, PCell access can succeed or fail. SCG RLF occurs soon after CHO+candidate SCG execution succeeds, and then MCG RLF can occur or not occur.

[0267] Alternatively, the definition of the condition execution of the conditional candidate secondary cell group to an error cell can also reuse the description of CPAC execution to an error PSCell, for example: terminal access to the target PSCell cell fails during PSCell switching, or access to the target PSCell cell succeeds but SCG failure occurs soon, and the suitable PSCell selected is a PSCell other than the target PSCell cell and the source PSCell cell. Alternatively, on the basis of the description of CPAC execution to an error PSCell, the description is added: this description also applies to CHO+candidate SCG; or, on the basis of the description of CPAC execution to an error PSCell, the description is added: CHO+candidate SCG execution fails, or PSCell access fails, or SCG RLF occurs soon after CHO+candidate SCG execution succeeds; or, on the basis of the description of CPAC execution to an error PSCell, the description is added: SCG RLF occurs first, and then MCG RLF can occur or not occur.

[0268] This embodiment does not limit the specific length of time of the fifth time, which represents the duration of the condition handover execution to SCG failure, and can also be understood as representing the duration of the condition handover execution to SCG failure.

[0269] 32) In the case of executing the conditional candidate secondary cell group, PCell access fails, or MCG RLF occurs within the sixth time after the execution of the conditional candidate secondary cell group succeeds, the terminal re-establishes connection with other PCell different from the source PCell and different from the target PCell.

[0270] In this embodiment, the definition of the condition execution of the conditional candidate secondary cell group to an error cell can be: PCell access failure during CHO+candidate SCG execution or MCG RLF occurs soon after CHO+candidate SCG execution succeeds, and the UE attempts to establish a connection in other cells other than the original PCell and the target PCell. PCell access failure during CHO+candidate SCG execution, at which time PSCell access can succeed or fail. MCG RLF occurs soon after CHO+candidate SCG execution succeeds, and SCG RLF can or can not occur.

[0271] Alternatively, the definition of the condition execution of the conditional candidate secondary cell group to an error cell can also reuse the description of switching to an error cell, for example: the terminal fails to access the target cell during the switching process, or successfully accesses the target cell but soon experiences radio link failure, and the terminal attempts to establish a connection in other cells different from the switching target cell and the source cell. Alternatively, on the basis of the description of switching to an error cell, the description is added: this description also applies to CHO+candidate SCG; or, on the basis of the description of switching to an error cell, the description is added: CHO+candidate SCG execution fails, or switching fails, or RLF occurs soon after CHO+candidate SCG execution succeeds; or, on the basis of the description of switching to an error cell, the description is added: MCG RLF occurs first, and then SCG RLF can or can not occur.

[0272] This embodiment does not limit the specific length of time of the sixth time, which represents the duration of the condition switching execution to MCG failure, and can also be understood as representing the duration of the condition switching execution to MCG failure.

[0273] As an optional embodiment, the method further comprises:

[0274] sending first information to the network side device, wherein the first information is used to determine whether to configure the condition switching of the conditional candidate secondary cell group;

[0275] The first information includes at least one of the following:

[0276] 1) Time information satisfying the PCell execution condition and time information satisfying the PSCell execution condition of the secondary cell group;

[0277] In this embodiment, the terminal can send the network side device the time information of the PCell trigger condition satisfaction and the time information of the PSCell trigger condition satisfaction. In some embodiments, a PCell trigger condition satisfaction time list can be used for recording, each node in the list including the start time of the condition satisfaction and the end time of the condition satisfaction. Similarly, a PSCell trigger condition satisfaction time list can be used for recording, each node in the list including the start time of the condition satisfaction and the end time of the condition satisfaction.

[0278] 2) the time information of the PCell execution condition satisfaction, and the information of whether the PSCell execution condition is satisfied in the case of the PCell execution condition satisfaction;

[0279] In this embodiment, the terminal can also record whether the PSCell trigger condition is satisfied each time the PCell trigger condition is satisfied, and send the recorded information to the network side device.

[0280] 3) the time information of the PSCell execution condition satisfaction, and the information of whether the PCell execution condition is satisfied in the case of the PSCell execution condition satisfaction;

[0281] In this embodiment, the terminal can also record whether the PSCell trigger condition is satisfied each time the PCell trigger condition is satisfied, and send the recorded information to the network side device.

[0282] 4) the measurement result when the PCell execution condition is satisfied;

[0283] In this embodiment, the terminal can record the measurement result when the PCell trigger condition is satisfied, and report the measurement result to the network side device.

[0284] 5) the measurement result when the PSCell execution condition is satisfied;

[0285] In this embodiment, the terminal can record the measurement result when the PSCell trigger condition is satisfied, and report the measurement result to the network side device.

[0286] 6) first identification information, used to indicate that the PCell execution condition and the PSCell execution condition are not satisfied simultaneously;

[0287] 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 satisfied simultaneously.

[0288] 7) second identification information, used to indicate that the measurement result of the PSCell is lower than a first value in the case of the PCell execution condition satisfaction;

[0289] In this embodiment, the terminal records and reports to the network side the second identification information, indicating that the measurement result of the related candidate PSCell is lower than a threshold value within the time when the PCell triggering condition is met. The first value is not limited here and can be configured by the network side device or pre-configured or pre-defined.

[0290] 8) The third identification information is used to indicate that the measurement result of the PCell is lower than the second value when the PSCell execution condition is met.

[0291] In this embodiment, the terminal records and reports to the network side the third identification information, indicating that the measurement result of the related candidate PCell is lower than a threshold value within the time when the PSCell triggering condition is met. The second value is not limited here and can be configured by the network side device or pre-configured or pre-defined.

[0292] The first value and / or the second value can be the threshold value mentioned above, which can be a conventional measurement threshold value, such as s-MeasureConfig in the measurement configuration, a5-Threshold2, a4-Threshold, etc. in ReportConfig.

[0293] 9) The fourth identification information is used to indicate that there is no common coverage area between the PCell switching area and the PSCell switching area. In this embodiment, the terminal records and reports to the network side the fourth identification information, indicating that there is no common coverage area between the PCell and the PSCell.

[0294] In this embodiment, after the network side device receives the failure information reported by the terminal, it 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 can 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 the conditional handover of the conditional candidate secondary cell group. In order to assist the network side device to identify these cases, the terminal reports at least one of the first information to the network side device.

[0295] In some embodiments, the conditional handover of the conditional candidate secondary cell group is not configured in at least one of the following cases:

[0296] There is no overlapping area between the PCell switching area and the PSCell switching area;

[0297] There is no overlap between the time when the PCell execution condition is met and the time when the PSCell execution condition is met;

[0298] The coverage area cannot meet the execution condition of the conditional handover of the conditional candidate secondary cell group;

[0299] The conditional handover of the candidate secondary cell group with conditions cannot be configured; or it is understood that the configuration optimization of CHO+candidate SCG should not be performed.

[0300] The configuration optimization of the conditional handover of the candidate secondary cell group with conditions cannot be performed, or it is understood that the configuration optimization of CHO+candidate SCG should not be performed.

[0301] In this embodiment, the terminal reports first information to the network side device, and the network side device identifies the above at least one condition according to the first information, and then does not configure the optimization of the conditional handover of the candidate secondary cell group with conditions, and in other cases, the configuration of the conditional handover of the candidate secondary cell group with conditions can be optimized, thereby solving the problem of mobility failure. The "whether to configure the conditional handover of the candidate secondary cell group with conditions" in the embodiment of the disclosure can also be understood as whether the network side device optimizes the configuration of the conditional handover of the candidate secondary cell group with conditions after receiving the failure information reported by the terminal.

[0302] In the embodiment of the disclosure, after the network side device receives the failure information and the first information reported by the terminal, the condition of not configuring the optimization of the conditional handover of the candidate secondary cell group can be excluded, and in the remaining cases, the failure type is determined and the corresponding optimization is performed. For example: for the CHO+candidate SCG execution error type that is too late, the parameters can be optimized to make the CHO+candidate SCG execution condition easier to meet, so as to achieve the goal of advancing the execution time point; for the CHO+candidate SCG execution error type that is too early, the parameters can be optimized to make the CHO+candidate SCG execution condition more difficult to meet, so as to achieve the goal of delaying the execution time point; for the CHO+candidate SCG execution error type to the wrong cell, the parameters can be optimized to make the CHO+candidate SCG more easily 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.

[0303] The implementation process of the information processing method of the conditional handover of the embodiment of the disclosure is illustrated below.

[0304] Example one, taking the failure type of the conditional handover of the candidate secondary cell group with conditions determined according to the failure information of the first failure as an example.

[0305] There can be only one failure (MCG failure or SCG failure) or two failures (MCG failure first and then SCG failure or SCG failure first and then MCG failure) in the CHO + candidate SCG procedure. The definition according to the first failure has the advantage of simple processing, the UE can only report one failure information in the CHO + candidate SCG procedure, and the network side device can start analysis immediately after receiving the failure information, without worrying about whether there will be a subsequent failure.

[0306] The solution is that even if only the first failure is optimized, there is a possibility of a second failure that is not analyzed and processed. However, subsequent CHO + candidate SCG procedures (for other UEs) may still fail, and can be handled next time. By solving part of the problem each time, the entire optimization work can eventually be completed.

[0307] The definition of the CHO + candidate SCG problem according to the type of the first failure is as follows:

[0308] (1) Late CHO + candidate SCG execution or CHO + candidate SCG execution is late, which can be one of the following:

[0309] 11) The UE receives CHO + candidate SCG configuration, SCG RLF occurs before the execution condition is met, and the suitable PSCell selected based on measurement is a PSCell other than the source PSCell. SCG RLF occurs first, and MCG RLF may or may not occur after that.

[0310] 12) Description of late CPAC execution. The description of late CPAC execution is that the terminal accesses the source PSCell cell and stably resides for a period of time, and then SCG failure occurs, and the suitable PSCell selected is not the source PSCell.

[0311] The description of late CPAC execution can also be added to the description of late CPAC execution: this description also applies to CHO + candidate SCG; the description of UE receiving CHO + candidate SCG configuration, SCG RLF occurring before the CHO + candidate SCG execution condition is met can also be added; the description of SCG RLF occurring first and MCG RLF occurring or not occurring after that can also be added.

[0312] 13) UE receives CHO+candidate SCG configuration, before the execution condition is met, MCG RLF occurs, UE tries to establish connection in a cell different from the original PCell. MCG RLF occurs first, then SCG RLF may or may not occur.

[0313] 14) Description of multiplexed late handover. The description of late handover is: the terminal stably resides in the source cell for a period of time, then wireless link failure occurs, and the terminal tries to establish connection in a different cell.

[0314] The description of multiplexed late handover can also be added on the basis of the description of late handover: the description also applies to CHO+candidate SCG, and the description that CHO+candidate SCG has been configured before connection failure occurs but execution is not triggered can also be added. The description that MCG RLF occurs first, then SCG RLF may or may not occur can also be added.

[0315] (2) Early CHO+candidate SCG execution or CHO+candidate SCG execution is too early, which can be one of the following:

[0316] 21) PSCell access fails when CHO+candidate SCG is executed, or SCG RLF occurs soon after CHO+candidate SCG execution succeeds, and the suitable PSCell selected based on measurement is the source PSCell. PSCell access fails when CHO+candidate SCG is executed, in which case PCell access can succeed or fail. SCG RLF occurs soon after CHO+candidate SCG execution succeeds, and then MCG RLF may or may not occur.

[0317] 22) Description of multiplexed early CPAC execution. The description of early CPAC execution is: the terminal fails to access the target PSCell cell during PSCell switching, or successfully accesses the target PSCell cell but soon SCG failure occurs, and the suitable PSCell selected is the source PSCell. The description of multiplexed early CPAC execution can also be added on the basis of the description of early CPAC execution: the description also applies to CHO+candidate SCG, and the description that CHO+candidate SCG execution fails, or PSCell access fails, or SCG RLF occurs soon after CHO+candidate SCG execution succeeds can also be added. The description that SCG RLF occurs first, then MCG RLF may or may not occur can also be added.

[0318] 23) CHO+candidate SCG execution time PCell access failure or CHO+candidate SCG execution success soon after the occurrence of MCG RLF, the UE attempts to establish a connection in the cell of the original PCell. CHO+candidate SCG execution time PCell access failure, at this time PSCell may access success or access failure. CHO+candidate SCG execution success soon after the occurrence of MCG RLF, then SCG RLF may occur or not.

[0319] 24) Multiplexing premature handover description. Premature handover description: the terminal fails to access the target cell during the handover process, or successfully accesses the target cell but soon experiences radio link failure, and the terminal attempts to establish a connection in the source cell. Based on the description of premature handover, it can also be described that this description also applies to CHO+candidate SCG, and it can also be described that CHO+candidate SCG execution fails, or handover fails, or CHO+candidate SCG execution success soon after the occurrence of RLF. It can also be described that MCG RLF occurs first, and then SCG RLF may occur or not.

[0320] (3) CHO+candidate SCG execution to an error cell, which can be one of the following:

[0321] 31) CHO+candidate SCG execution time PSCell access failure or CHO+candidate SCG execution success soon after the occurrence of SCG RLF, the appropriate PSCell selected based on measurement is other cells that are not the source PSCell and not the target PSCell. CHO+candidate SCG execution time PSCell access failure, at this time PCell may access success or access failure. CHO+candidate SCG execution success soon after the occurrence of SCG RLF, then MCG RLF may occur or not.

[0322] 32) multiplexing the description of CPAC execution to wrong PSCell. The description of CPAC execution to wrong PSCell is that the terminal fails to access the target PSCell cell in the PSCell switching process, or successfully accesses the target PSCell cell but soon SCG failure occurs, the newly selected suitable PSCell is a non-target PSCell cell and a non-source PSCell cell. The description can also be added on the basis of the description of CPAC execution to wrong PSCell: the description also applies to CHO+candidate SCG, and the description can also be added: CHO+candidate SCG execution fails, or PSCell access fails, or SCG RLF occurs soon after CHO+candidate SCG execution succeeds. The description can also be added: SCG RLF occurs first, and then MCG RLF may or may not occur.

[0323] 33) PCell access fails when CHO+candidate SCG is executed, or MCG RLF occurs soon after CHO+candidate SCG execution succeeds, and the UE attempts to establish a connection in a cell other than the original PCell and the target PCell. PCell access fails when CHO+candidate SCG is executed, and PSCell access may succeed or fail. MCG RLF occurs soon after CHO+candidate SCG execution succeeds, and then SCG RLF may or may not occur.

[0324] 34) multiplexing the description of switching to a wrong cell. The description of switching to a wrong cell is that the terminal fails to access the target cell in the switching process, or successfully accesses the target cell but soon radio link failure occurs, and the terminal attempts to establish a connection in a cell different from the switching target cell and the source cell. The description can also be added on the basis of the description of switching to a wrong cell: the description also applies to CHO+candidate SCG, and the description can also be added: CHO+candidate SCG execution fails, or switching fails, or RLF occurs soon after CHO+candidate SCG execution succeeds. The description can also be added: MCG RLF occurs first, and then SCG RLF may or may not occur.

[0325] The discovery mechanism corresponding to the above failure type can be based on the above problem definition, and a UE reporting timer is used to judge the length of the residence time, for example:

[0326] When the CHO+candidate SCG is executed too late, the UE reporting timer is empty or greater than the configured threshold value, indicating that the residence time is long.

[0327] Early CHO+candidate SCG execution and CHO+candidate SCG execution to wrong cell, UE reporting timer is less than the configured threshold value, indicating that the residence time is short.

[0328] After the failure occurs, the UE's behavior of trying to establish a connection to access the cell includes: first trying to reestablish access to the cell, and / or trying to reestablish a connection to access the cell, and / or trying to recover access to the cell through CHO;

[0329] From the perspective of the UE:

[0330] If MCG failure occurs first, the UE reports RLF report, and if SCG failure occurs again, the UE can choose not to send the SCG failure information message;

[0331] If SCG failure occurs first, the UE sends the SCG failure information message, and if MCG failure occurs again, the UE can choose not to generate the RLF report.

[0332] From the perspective of network device processing:

[0333] The network side device receives the SCG failure information message or the RLF report, first analyzes whether it has previously processed the analysis of the UE for this handover; if not, it analyzes and processes the received SCG failure information message or RLF report this time; if it has been processed, it can not be processed this time.

[0334] Example two, taking the failure type of conditional handover of the conditional candidate secondary cell group according to the failure information of MCG failure as an example.

[0335] MCG failure and SCG failure may occur in the CHO+candidate SCG process, and the idea of defining the failure type according to MCG failure is: the importance of MCG connection is greater than that of SCG, so in the case of simultaneous MCG and SCG failure, the problem of MCG failure should be solved first.

[0336] (A) Late CHO+candidate SCG execution or CHO+candidate SCG execution is late, which may be one of the following:

[0337] A1) UE receives CHO+candidate SCG configuration, before the execution condition is met, MCG RLF failure occurs, UE tries to establish connection in a cell different from the original PCell. SCG RLF may or may not occur before or after MCG RLF.

[0338] A2) Description of multiplexed late handover. The description of late handover is: the terminal stably resides in the source cell for a period of time, then wireless link failure occurs, and the terminal tries to establish connection in a different cell.

[0339] The description of late handover can also be added on the basis of the description: the description also applies to CHO+candidate SCG, and the description can also be added: CHO+candidate SCG has been configured before connection failure occurs but execution is not triggered; and the description can also be added: SCG RLF may or may not occur before or after MCG RLF.

[0340] (B) Early CHO+candidate SCG execution or CHO+candidate SCG execution is too early, which can be one of the following:

[0341] B1) PCell access fails when CHO+candidate SCG is executed, or MCG RLF occurs soon after CHO+candidate SCG execution succeeds, and UE tries to establish connection in the cell of the original PCell. PCell access fails when CHO+candidate SCG is executed, at which time PSCell access can succeed or fail. MCG RLF occurs soon after CHO+candidate SCG execution succeeds, and SCG RLF may or may not occur before or after MCG RLF.

[0342] B2) Description of multiplexed early handover. The description of early handover is: the terminal fails to access the target cell during handover, or successfully accesses the target cell but soon experiences wireless link failure, and the terminal tries to establish connection in the source cell. The description of early handover can also be added on the basis of the description: the description also applies to CHO+candidate SCG; the description can also be added: CHO+candidate SCG execution fails, or handover fails, or RLF occurs soon after CHO+candidate SCG execution succeeds; and the description can also be added: PCell access fails when CHO+candidate SCG is executed, at which time PSCell access can succeed or fail.

[0343] (C) CHO + candidate SCG execution to an error cell, possibly one of the following:

[0344] C1) CHO + candidate SCG execution PCell access failure or CHO + candidate SCG execution success followed by MCG RLF, UE attempts to establish connection in other cells than the original PCell and target PCell. CHO + candidate SCG execution PCell access failure, at this time PSCell may access success or access failure. CHO + candidate SCG execution success followed by MCG RLF, MCG RLF may occur before or after SCG RLF may occur or not.

[0345] C2) multiplexing switching to an error cell. Switching to an error cell is described as follows: the terminal fails to access the target cell during the switching process, or successfully accesses the target cell but soon experiences radio link failure, and the terminal attempts to establish connection in other cells different from the switching target cell and the source cell. It can also be described on the basis of switching to an error cell that the description also applies to CHO + candidate SCG; it can also be described that CHO + candidate SCG execution fails, or switching fails, or RLF occurs soon after CHO + candidate SCG execution succeeds; it can also be described that MCG RLF occurs soon after CHO + candidate SCG execution succeeds, and SCG RLF may occur or not before or after MCG RLF occurs.

[0346] The discovery mechanism corresponding to the above failure type can be based on the above problem definition, and a UE reporting timer is added to judge the length of the residence time, for example:

[0347] When CHO + candidate SCG execution is too late, the UE reporting timer is empty or greater than the configured threshold value, indicating that the residence time is long.

[0348] When CHO + candidate SCG execution is too early and CHO + candidate SCG execution to an error cell, the UE reporting timer is less than the configured threshold value, indicating that the residence time is short.

[0349] After the failure occurs, the UE attempts to establish connection and access the cell, including: first attempt to reestablish access to the cell, and / or attempt to reestablish connection and access the cell, and / or attempt to recover access to the cell through CHO.

[0350] From UE side: UE only sends RLF report after MCG failure, no longer sends SCG failure information message after SCG failure.

[0351] From network side device processing: network side device only receives, analyzes and processes RLF report, no longer analyzes SCG failure information message.

[0352] Example three, taking the network side device determining the failure type of the conditional handover of the conditional candidate secondary cell group according to the failure information of MCG failure or according to the failure information of SCG failure as an example.

[0353] In example two, only defining the failure type according to the failure information of MCG failure can solve the scenario of MCG and SCG failure occurring in sequence. However, if only SCG failure occurs, the network side device will miss the opportunity for optimization adjustment. Therefore, a more flexible processing method is that the network side device selects to define the failure type according to MCG failure or SCG failure.

[0354] The idea is: in the early stage of network optimization, only the scenario of MCG failure can be focused on, and the optimization of SCG failure is abandoned; after the problem of MCG failure is solved, the network side can configure to collect SCG failure information, and then optimize the mobility of SCG.

[0355] If the network side device selects to define the failure type according to the failure information of MCG failure, the definition of CHO+candidate SCG failure type is the same as example two, which is not repeated here.

[0356] If the network side device selects to define the failure type according to the failure information of SCG failure, the definition of CHO+candidate SCG failure type is as follows:

[0357] (a) CHO+candidate SCG execution is too late or CHO+candidate SCG execution is too late, which can be one of the following:

[0358] a1) UE receives CHO+candidate SCG configuration, before the execution condition is met, SCG RLF occurs, and the suitable PSCell selected based on measurement is other PSCell different from the source PSCell. MCG RLF can or can not occur before or after SCG RLF.

[0359] a2) Description of late CPAC execution. The description of late CPAC execution is that after the terminal accesses the source PSCell cell for a period of time, SCG failure occurs, and the newly selected suitable PSCell is not the source PSCell.

[0360] On the basis of the description of late CPAC execution, the description that the description also applies to CHO+candidate SCG can be added, and the description that the UE receives CHO+candidate SCG configuration, SCG RLF occurs before the CHO+candidate SCG execution condition is met can be added. The description that before or after SCG RLF occurs, MCG RLF can occur or can not occur can also be added.

[0361] (b) Early CHO+candidate SCG execution or CHO+candidate SCG execution is too early, which can be one of the following:

[0362] b1) PSCell access fails when CHO+candidate SCG execution is performed, or SCG RLF occurs soon after CHO+candidate SCG execution is successful, and the suitable PSCell selected based on measurement is the source PSCell. PSCell access fails when CHO+candidate SCG execution is performed, at which time PCell access can succeed or fail. SCG RLF occurs soon after CHO+candidate SCG execution is successful, and before or after SCG RLF occurs, MCG RLF can occur or can not occur.

[0363] b2) Description of early CPAC execution is added. The description of early CPAC execution is that the terminal fails to access the target PSCell cell during PSCell transformation, or successfully accesses the target PSCell cell but soon SCG failure occurs, and the newly selected suitable PSCell is the source PSCell.

[0364] On the basis of the description of early CPAC execution, the description that the description also applies to CHO+candidate SCG can be added, and the description that CHO+candidate SCG execution fails, or PSCell access fails, or SCG RLF occurs soon after CHO+candidate SCG execution is successful can be added. The description that before or after SCG RLF occurs, MCG RLF can occur or can not occur can also be added.

[0365] (c) CHO+candidate SCG execution to an error cell, which can be one of the following:

[0366] c1) CHO + candidate SCG execution time PSCell access failure or CHO + candidate SCG execution success soon after SCG RLF, the suitable PSCell selected based on measurement is the other cell of non-source PSCell and non-target PSCell. CHO + candidate SCG execution time PSCell access failure, at this time PCell may access success or access failure. CHO + candidate SCG execution success soon after SCG RLF, MCG RLF may occur before or after SCG RLF occurs or not.

[0367] c2) Multiplexing CPAC execution to the description of the wrong PSCell.

[0368] The description of CPAC execution to the wrong PSCell is: the terminal fails to access the target PSCell cell during PSCell transformation, or successfully accesses the target PSCell cell but soon SCG failure occurs, and the newly selected suitable PSCell is the other PSCell cell of non-target PSCell cell and non-source PSCell cell.

[0369] The description of CPAC execution to the wrong PSCell can also be added on the basis of the description: this description also applies to CHO + candidate SCG; The description can also be added: CHO + candidate SCG execution failure, or PSCell access failure, or CHO + candidate SCG execution success soon after SCG RLF; The description can also be added: MCG RLF may occur before or after SCG RLF occurs or not.

[0370] The discovery mechanism corresponding to the above failure type can be based on the above problem definition, and the UE reporting timer is added to judge the length of the residence time, for example:

[0371] When the CHO + candidate SCG execution is too late, the UE reporting timer is empty or greater than the configured threshold value, indicating that the residence time is long.

[0372] When the CHO + candidate SCG execution is too early and the CHO + candidate SCG execution is to the wrong cell, the UE reporting timer is less than the configured threshold value, indicating that the residence time is short.

[0373] The behavior of the UE trying to establish a connection to access a cell after a failure includes: trying to reestablish access to a cell for the first time, and / or trying to reestablish a connection to access a cell, and / or trying to recover access to a cell through CHO;

[0374] From the perspective of the UE: the network side device can send MCG indication information or SCG indication information to the UE. If the UE receives the MCG indication information, it only sends the RLF report recorded after the MCG failure, and no longer sends the SCG failure information message after the SCG failure. If the UE receives the SCG indication information, the UE only sends the SCG failure information message after the SCG failure, and no longer records the RLF report after the MCG failure.

[0375] The network side device can also not send MCG indication information or SCG indication information to the UE, and the UE reports both the RLF report and the SCG failure information message, which is selected by the network side.

[0376] From the perspective of the network side device processing:

[0377] If the network side device has sent MCG indication information or SCG indication information to the UE, the network side only needs to receive and analyze the corresponding failure information.

[0378] 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.

[0379] Example four, scenario not applicable to configuration of CHO+candidate SCG.

[0380] In the above example one, example two and example three, after the network side device receives the failure information reported by the UE for CHO+candidate SCG, it can analyze the failure type of CHO+candidate SCG, such as CHO+candidate SCG execution is too late, CHO+candidate SCG execution is too early or CHO+candidate SCG execution is to an error cell, and make corresponding parameter configuration optimization. However, in the scenario of the following FIG. 3, after the network side device receives the failure information reported by the UE, it will get the failure type of CHO+candidate SCG execution is too late, which is an incorrect analysis result, and even if the configuration is optimized, it cannot solve the problem of mobility failure.

[0381] In FIG. 3, the UE first connects to the primary cell 1 and the primary cell A of the secondary cell (PCell1+PSCell A), and the target cell of CHO+candidate SCG execution is the primary cell 2 and the primary cell B of the secondary cell (PCell2+PSCellB).

[0382] CHO+candidate SCG execution requires that the execution conditions of the PCell and the PSCell are met at the same time, but during the movement of the UE, the trigger condition of the PCell can be met in the common coverage area of the PCell1 and the PCell2. The trigger condition of the PSCell can be met in the common coverage area of the PSCellA and the PSCellB. Since the execution conditions of the PCell and the PSCell are not met at the same time, the CHO+candidate SCG is not triggered, and after the UE leaves the coverage area of the PCell1, the MCG RLF occurs.

[0383] If the definition in the above embodiment is adopted, the analysis shows that the failure type is CHO+candidate SCG execution too late. However, even if the execution condition is optimized to be more relaxed and easier to meet, it is still impossible to make the CHO+candidate SCG be executed because there is no overlapping area between the common coverage area of the PCell1 and the PCell2 and the common coverage area of the PSCellA and the PSCellB, and it is impossible to make the execution conditions of the PCell and the PSCell be met at the same time. Therefore, before the failure type analysis of the examples 1, 2 and 3, the part of the scenario needs to be excluded to avoid incorrect network parameter optimization.

[0384] The situation that needs to be excluded is:

[0385] There is no overlapping area between the PCell handover area and the PSCell handover area, or

[0386] There is no overlapping between the time when the trigger condition of the PCell is met and the time when the trigger condition of the PSCell is met, or

[0387] The coverage area cannot meet the execution condition of the CHO+candidate SCG,

[0388] The CHO+candidate SCG should not be configured, or the configuration optimization of the CHO+candidate SCG should not be performed.

[0389] In order to assist the network to identify the above scenario, the UE needs to report one or more of the following information (i.e., the first information):

[0390] (1) The time information of the PCell trigger condition meeting and the time information of the PSCell trigger condition meeting. A list of the PCell trigger condition meeting time can be recorded, and each node in the list includes the start time of the condition meeting and the end time of the condition meeting. The PSCell is similar and is not described here.

[0391] (2) Each time the PCell trigger condition meets, whether the PSCell trigger condition meets is also recorded; similarly, each time the PCell trigger condition meets, whether the PSCell trigger condition meets is also recorded.

[0392] (3) When the PCell trigger condition meets, the measurement result is recorded. When the PSCell trigger condition meets, the measurement result is also recorded. The measurement result can include the measurement result of the PCell and the PSCell candidate cell.

[0393] (4) The UE records the identification information indicating that the PCell trigger condition and the PSCell trigger condition are not met at the same time.

[0394] (5) The UE records the identification information of the PSCell measurement, indicating that the measurement result of the related candidate PSCell is lower than a threshold value within the meeting time of the PCell trigger condition.

[0395] (6) The UE records the identification information of the PCell measurement, indicating that the measurement result of the related candidate PCell is lower than a threshold value within the meeting time of the PSCell trigger condition.

[0396] The threshold value described above can be an existing measurement threshold value, for example: s-MeasureConfig in the measurement configuration, a5-Threshold2, a4-Threshold, etc. in ReportConfig.

[0397] (7) The UE records the identification information related to the coverage area, indicating that the PCell and the PSCell do not have a common coverage area, that is, there is no overlapping area between the common coverage area of PCell1 and PCell2 and the common coverage area of PSCellA and PSCellB in FIG. 3.

[0398] In this embodiment, the terminal reports the failure information of the CHO+candidate SCG to the network side device, and the network side device analyzes the failure type of the CHO+candidate SCG according to the failure information to solve the connection failure problem in the mobile. Before the network side analyzes the failure type, the above scenarios need to be excluded, otherwise it will lead to an incorrect failure type analysis result.

[0399] Embodiments of the present disclosure assist the network side device to determine the failure type of CHO+candidate SCG by collecting necessary information from the UE. After determining the failure type, the mobility configuration can be optimized accordingly. For example: CHO+candidate SCG is executed too late, the execution condition needs to be made easier to meet, so as to achieve the purpose of advancing the execution time point; CHO+candidate SCG is executed to the wrong cell, the correct cell needs to be added to the candidate cell, so as to be able to execute to the correct target cell. Through the above optimization configuration, the handover success rate can be improved, and the network index can be improved.

[0400] As shown in FIG. 4, the present disclosure also provides an information processing method of conditional handover, applied to a network side device, comprising:

[0401] Step 401, receiving failure information of conditional handover with candidate secondary cell group sent by a terminal.

[0402] Step 402, determining the failure type of conditional handover with candidate secondary cell group according to the failure information.

[0403] In this embodiment, when the CHO+candidate SCG process is executed, if handover failure occurs, the terminal sends failure information to the network side device. The failure can include MCG failure and / or SCG failure, and the failure information can include related information of MCG failure and / or related information of SCG failure. The MCG failure can include radio link failure and / or handover failure on MCG, such as PCell handover failure and RLF on MCG; the SCG failure can include radio link failure on SCG and / or synchronization reconfiguration failure on SCG, such as PSCell addition failure, PSCell transformation failure and RLF on SCG.

[0404] The failure information can be used to determine the failure type of CHO+candidate SCG, and can also be understood as the failure information being used to define the failure type of CHO+candidate SCG. For example: the network side device can determine (or define) the type of failure occurring in the CHO+candidate SCG process according to the failure information, so as to perform MRO for the determined failure type, achieve targeted optimization, and more accurately solve the mobility problem.

[0405] Embodiments of the present disclosure, for conditional handover with a conditional candidate secondary cell group, a terminal reports failure information of the conditional handover to a network side device, and the network side device can determine a failure type of the conditional handover with the conditional candidate secondary cell group based on the failure information, so as to perform corresponding mobility configuration for the determined failure type, realize more accurate MRO, improve handover success rate, and improve network indicators.

[0406] In some embodiments, determining the failure type of the conditional handover with the conditional candidate secondary cell group according to the failure information comprises one of the following:

[0407] (1) determining the failure type of the conditional handover with the conditional candidate secondary cell group according to failure information of a first failure;

[0408] In this embodiment, the "first failure" refers to, for example, a failure that occurs first after the terminal receives configuration information of the conditional handover with the conditional candidate secondary cell group, such as a first MCG failure or a first SCG failure. For example, after the terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an MCG failure occurs first, and then an SCG failure occurs. In this case, the first failure refers to the MCG failure. For another example, after the terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an SCG failure occurs first, and then an MCG failure occurs. In this case, the first failure refers to the SCG failure.

[0409] In this case, the terminal can only report the failure information of the first failure to the network side device, and the network side device determines the failure type of the CHO+candidate SCG failure according to the failure information of the first failure. In some embodiments, the terminal can also report the failure information of each failure to the terminal, but the network side device only determines the failure type of the CHO+candidate SCG according to the failure information of the first failure.

[0410] (2) determining the failure type of the conditional handover with the conditional candidate secondary cell group according to failure information of an MCG failure;

[0411] In this embodiment, the terminal can only report the failure information of the MCG failure to the network side device, and the network side device determines the failure type of the CHO+candidate SCG according to the failure information of the MCG failure. In some embodiments, the terminal can also report the failure information of each failure to the terminal, but the network side device only determines the failure type of the CHO+candidate SCG according to the failure information of the MCG failure.

[0412] For example, MCG failure occurs in the CHO+candidate SCG procedure, the terminal reports the failure information of the MCG failure to the network device, and then SCG failure occurs. The terminal can not send the failure information of the SCG failure, or can send the failure information of the SCG failure. For another example, SCG failure occurs in the CHO+candidate SCG procedure, the terminal can not report the failure information of the SCG failure to the network device, and then MCG failure occurs. The terminal reports the failure information of the MCG failure to the network device.

[0413] (3) According to the failure information of the MCG failure or the failure information of the SCG failure, the failure type of the conditional handover of the conditional candidate secondary cell group is determined.

[0414] In this embodiment, the terminal can send only the failure information of the MCG failure to the network device, or send only the failure information of the SCG failure to the network device, or send both the failure information of the MCG failure and the failure information of the SCG failure to the network device. The network device can determine the failure type of the CHO+candidate SCG according to the failure information of the MCG failure, or determine the failure type of the CHO+candidate SCG according to the failure information of the SCG failure. The network device can select according to which information to determine the failure type.

[0415] As an optional embodiment, the failure type includes at least one of the following:

[0416] (1) The conditional handover of the conditional candidate secondary cell group is executed too late; it can also be understood as too late CHO+candidate SCG execution.

[0417] (2) The conditional handover of the conditional candidate secondary cell group is executed too early; it can also be understood as too early CHO+candidate SCG execution

[0418] (3) The conditional handover of the conditional candidate secondary cell group is executed to an error cell.

[0419] In this embodiment, MCG failure and SCG failure can occur in the CHO+candidate SCG execution process, or both of the above failures occur, the terminal reports the failure information in the CHO+candidate SCG execution process to the network side device, and the network side device can determine the failure type of the CHO+candidate SCG as any of the above according to the failure information. For example, the network side device determines the failure type of the CHO+candidate SCG as any of the above according to the failure information of the first failure, or the network side device determines the failure type of the CHO+candidate SCG as any of the above according to the failure information of the MCG failure, or the network side device determines the failure type of the CHO+candidate SCG as any of the above according to the failure information of the SCG failure.

[0420] In some embodiments, the definition of the late execution of the conditional handover of the conditional candidate secondary cell group includes one of the following:

[0421] 11) The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, SCG failure occurs before the execution condition of the conditional handover of the conditional candidate secondary cell group is met, and the suitable PSCell selected by the terminal based on measurement is another PSCell different from the source PSCell;

[0422] In this embodiment, the late or excessively late CHO+candidate SCG can be defined as: the UE receives the CHO+candidate SCG configuration, SCG RLF occurs before the execution condition is met, and the suitable PSCell selected based on measurement is another PSCell different from the source PSCell. SCG RLF occurs first, and then MCG RLF can occur or can not occur.

[0423] 12) The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, SCG failure occurs after the terminal accesses the source PSCell cell and stably resides for the first time, and the selected new PSCell is another PSCell different from the source PSCell;

[0424] In this embodiment, CHO+candidate SCG execution is too late or too late CHO+candidate SCG can reuse the description of too late CPAC execution, for example: after the terminal accesses the source PSCell cell and stably camps for a period of time, SCG failure occurs, and the newly selected suitable PSCell is not the source PSCell. Or, the description can be added on the basis of the description of too late CPAC execution: the description also applies to CHO+candidate SCG; or, the description can be added on the basis of the description of too late CPAC execution: the UE receives the CHO+candidate SCG configuration, and SCG RLF occurs before the CHO+candidate SCG execution condition is met. Or, the description can be added on the basis of the description of too late CPAC execution: SCG RLF occurs first, and then MCG RLF may or may not occur.

[0425] This embodiment does not limit the specific length of time of the first time, which represents the duration of the terminal camping on the source PSCell.

[0426] 13) The terminal receives configuration information of conditional handover with a conditional candidate secondary cell group, MCG RLF occurs before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, and the terminal reestablishes connection in a cell different from the source PCell.

[0427] In this embodiment, too late CHO+candidate SCG execution or too late CHO+candidate SCG can be defined as: the UE receives the CHO+candidate SCG configuration, MCG RLF occurs before the execution condition is met, and the UE attempts to establish connection in a cell different from the original PCell. MCG RLF occurs first, and then SCG RLF may or may not occur.

[0428] 14) The terminal receives configuration information of conditional handover with a conditional candidate secondary cell group, MCG RLF occurs in the source cell after the terminal stably camps for a second time before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, and the terminal reestablishes connection in a cell different from the source cell.

[0429] In this embodiment, CHO+candidate SCG execution is too late or too late CHO+candidate SCG can reuse the description of the late handover, for example: the terminal stably resides in the source cell for a period of time, and then a radio link failure occurs, and the terminal attempts to establish a connection in a different cell. Alternatively, the description can be added on the basis of the description of the late handover: the description also applies to CHO+candidate SCG; or the description can be added on the basis of the description of the late handover: CHO+candidate SCG has been configured before the connection failure occurs but execution is not triggered; or the description can be added on the basis of the description of the late handover: MCG RLF occurs first, and then SCG RLF may or may not occur.

[0430] This embodiment does not limit the specific length of time of the second time, which represents the length of time that the terminal resides in the source cell.

[0431] In some embodiments, the definition of early execution of conditional handover of the conditional candidate secondary cell group includes at least one of the following:

[0432] 21) In the case of executing conditional handover of the conditional candidate secondary cell group, the conditional handover of the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within a third time after the successful execution of the conditional handover of the conditional candidate secondary cell group, and the suitable PSCell selected by the terminal based on measurement is the source PSCell;

[0433] In this embodiment, too early or too early CHO+candidate SCG execution can be defined as: PSCell access fails when CHO+candidate SCG is executed, or SCG RLF occurs soon after the successful execution of CHO+candidate SCG, and the suitable PSCell selected based on measurement is the source PSCell.

[0434] PSCell access fails when CHO+candidate SCG is executed, at which time PCell may or may not be successfully accessed. SCG RLF occurs soon after the successful execution of CHO+candidate SCG, and then MCG RLF may or may not occur.

[0435] This embodiment does not limit the specific length of time of the third time, which represents the length of time from the execution of the conditional handover to the occurrence of SCG failure, and can also be understood as representing the length of time from the start of the execution of the conditional handover to the occurrence of SCG failure.

[0436] Alternatively, the description of early CPAC execution can also be reused for early CHO+candidate SCG execution, for example: the terminal fails to access the target PSCell cell during PSCell switching, or successfully accesses the target PSCell cell but SCG failure occurs soon, and the newly selected suitable PSCell is the source PSCell. Alternatively, the description of early CPAC execution is added with the description: the description also applies to CHO+candidate SCG; or the description of early CPAC execution is added with the description: CHO+candidate SCG execution fails, or PSCell access fails, or SCG RLF occurs soon after CHO+candidate SCG execution succeeds; or the description of early CPAC execution is added with the description: SCG RLF occurs first, and then MCG RLF may or may not occur.

[0437] 22) In the case of conditional handover with a conditional candidate secondary cell group, the PCell access fails, or MCG RLF occurs within the fourth time after the conditional handover with the conditional candidate secondary cell group is successfully executed, and the terminal re-establishes the connection in the source PCell.

[0438] In this embodiment, early CHO+candidate SCG execution or early CHO+candidate SCG can be defined as: PCell access fails when CHO+candidate SCG is executed, or MCG RLF occurs soon after CHO+candidate SCG execution succeeds, and the UE attempts to establish a connection in the cell of the original PCell. PCell access fails when CHO+candidate SCG is executed, and PSCell access may succeed or fail at this time.

[0439] MCG RLF occurs soon after CHO+candidate SCG execution succeeds, and then SCG RLF may or may not occur.

[0440] Alternatively, the CHO+candidate SCG performing early or early CHO+candidate SCG can also reuse the description of early handover, for example: the terminal fails to access the target cell during the handover process, or successfully accesses the target cell but soon experiences radio link failure, and the terminal tries to establish a connection in the source cell. Alternatively, the description of early handover is added on the basis of the description: the description also applies to CHO+candidate SCG; or, on the basis of the description of early handover, add a description: CHO+candidate SCG execution fails, or handover fails, or SCG RLF occurs soon after CHO+candidate SCG execution succeeds; or, on the basis of the description of early handover, add a description: MCG RLF occurs first, and then SCG RLF may or may not occur.

[0441] This embodiment does not limit the specific length of time of the fourth time, which represents the time length from the execution of the conditional handover to the occurrence of MCG failure, and can also be understood as representing the time length from the start of the execution of the conditional handover to the occurrence of MCG failure.

[0442] In some embodiments, the definition of the conditional execution of the conditional candidate secondary cell group to an error cell includes at least one of the following:

[0443] 31) In the case of performing conditional handover of the conditional candidate secondary cell group, the conditional handover of the conditional candidate secondary cell group fails, or the PSCell access fails, or the SCG failure occurs within a fifth time after the conditional handover of the conditional candidate secondary cell group succeeds, and the suitable PSCell selected based on measurement is other PSCell different from the source PSCell and different from the target PSCell;

[0444] In this embodiment, the conditional execution of the conditional candidate secondary cell group to the error cell can be defined as: the PSCell access fails when the CHO+candidate SCG is executed, or SCG RLF occurs soon after the CHO+candidate SCG is successfully executed, and the suitable PSCell selected based on measurement is other cell that is not the source PSCell and not the target PSCell. The PSCell access fails when the CHO+candidate SCG is executed, at which time the PCell may or may not be successfully accessed. SCG RLF occurs soon after the CHO+candidate SCG is successfully executed, and then MCG RLF may or may not occur.

[0445] Alternatively, the definition of the conditional execution of the conditional candidate secondary cell group to an error cell can also reuse the description of the CPAC execution to an error PSCell, for example: the terminal fails to access the target PSCell cell during the PSCell switching process, or successfully accesses the target PSCell cell but soon SCG failure occurs, the newly selected suitable PSCell is a non-target PSCell cell and a non-source PSCell cell. Alternatively, on the basis of the description of the CPAC execution to the error PSCell, the description is added: this description also applies to CHO+candidate SCG; or, on the basis of the description of the CPAC execution to the error PSCell, the description is added: CHO+candidate SCG execution fails, or PSCell access fails, or SCG RLF occurs soon after CHO+candidate SCG execution succeeds; or, on the basis of the description of the CPAC execution to the error PSCell, the description is added: SCG RLF occurs first, and then MCG RLF may or may not occur.

[0446] This embodiment does not limit the specific length of time of the fifth time, which represents the duration of the conditional handover execution to SCG failure, and can also be understood as representing the duration from the start of the conditional handover execution to the occurrence of SCG failure.

[0447] 32) In the case of executing the conditional handover of the conditional candidate secondary cell group, the PCell access fails, or MCG RLF occurs within the sixth time after the conditional handover of the conditional candidate secondary cell group is successfully executed, the terminal re-establishes a connection with other PCells different from the source PCell and different from the target PCell.

[0448] In this embodiment, the conditional execution of the conditional candidate secondary cell group to an error cell can be defined as: CHO+candidate SCG execution PCell access failure or CHO+candidate SCG execution success soon MCG RLF occurs, UE attempts to establish a connection in other cells that are not original PCells and are not target PCells. CHO+candidate SCG execution PCell access failure, at this time PSCell may access success or access failure. CHO+candidate SCG execution success soon MCG RLF occurs first, and then SCG RLF may or may not occur.

[0449] Alternatively, the definition of the condition execution of the conditional candidate secondary cell group to the error cell can also reuse the description of switching to the error cell, for example: the terminal fails to access the target cell during the switching process, or successfully accesses the target cell but soon experiences radio link failure, and the terminal tries to establish a connection in a cell different from the switching target cell and the source cell. Alternatively, on the basis of the description of switching to the error cell, the description is added: the description also applies to CHO+candidate SCG; or, on the basis of the description of switching to the error cell, the description is added: CHO+candidate SCG execution fails, or switching fails, or RLF occurs soon after CHO+candidate SCG execution succeeds; or, on the basis of the description of switching to the error cell, the description is added: MCG RLF occurs first, and then SCG RLF may or may not occur.

[0450] This embodiment does not limit the specific length of time of the sixth time, which represents the duration of the condition switching execution to the occurrence of MCG failure, and can also be understood as representing the duration of the condition switching execution from the start to the occurrence of MCG failure.

[0451] As an optional embodiment, the method further comprises:

[0452] receiving the first information sent by the terminal;

[0453] determining whether to configure the condition switching of the conditional candidate secondary cell group according to the first information;

[0454] The first information includes at least one of the following:

[0455] 1) Time information of satisfying the PCell execution condition and time information of satisfying the PSCell execution condition of the secondary cell group;

[0456] In this embodiment, the terminal can send the network side device the time information of satisfying the PCell trigger condition and the time information of satisfying the PSCell trigger condition. In some embodiments, a PCell trigger condition satisfaction time list can be used for recording, and each node in the list includes the start time of satisfying the condition and the end time of satisfying the condition. Similarly, a PSCell trigger condition satisfaction time list can be used for recording, and each node in the list includes the start time of satisfying the condition and the end time of satisfying the condition.

[0457] 2) Time information of PCell execution condition satisfaction, and information of whether PSCell execution condition is satisfied in the case of PCell execution condition satisfaction;

[0458] In this embodiment, the terminal can also record whether the PSCell triggering condition is met each time the PCell triggering condition is met, and send the recorded information to the network side device.

[0459] 3) time information of when the PSCell execution condition is met, and information of whether the PCell execution condition is met in the case that the PSCell execution condition is met;

[0460] In this embodiment, the terminal can also record whether the PSCell triggering condition is met each time the PCell triggering condition is met, and send the recorded information to the network side device.

[0461] 4) measurement result when the PCell execution condition is met;

[0462] In this embodiment, the terminal can record the measurement result when the PCell triggering condition is met, and report the measurement result to the network side device.

[0463] 5) measurement result when the PSCell execution condition is met;

[0464] In this embodiment, the terminal can record the measurement result when the PSCell triggering condition is met, and report the measurement result to the network side device.

[0465] 6) first identification information, used to indicate that the PCell execution condition and the PSCell execution condition are not met at the same time;

[0466] In this embodiment, the terminal records and reports the first identification information to the network side, indicating that the PCell triggering condition and the PSCell triggering condition are not met at the same time.

[0467] 7) second identification information, used to indicate that the measurement result of the PSCell is lower than a first value in the case that the PCell execution condition is met;

[0468] In this embodiment, the terminal records and reports the second identification information to the network side, indicating that the measurement result of the related candidate PSCell is lower than a threshold value within the time when the PCell triggering condition is met. The first value is not limited here, and can be configured by the network side device or pre-configured or pre-defined.

[0469] 8) third identification information, used to indicate that the measurement result of the PCell is lower than a second value in the case that the PSCell execution condition is met;

[0470] In this embodiment, the terminal records and reports to the network side the third identification information, indicating that the measurement result of the related candidate PCell is lower than a threshold value within the time when the PSCell triggering condition is met. The second value is not limited here and can be configured by the network side device or pre-configured or pre-defined.

[0471] The first value and / or the second value can be the threshold value described above, which can be a conventional measurement threshold value, such as s-MeasureConfig in measurement configuration, a5-Threshold2, a4-Threshold, etc. in ReportConfig.

[0472] 9) The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area. In this embodiment, the terminal records and reports to the network side the fourth identification information, indicating that the PCell and the PSCell have no common coverage area.

[0473] In this embodiment, after the network side device receives the failure information reported by the terminal, it 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 can be incorrect, and even if the configuration is optimized, the problem of mobility failure cannot be solved. Therefore, in these cases, the network side device does not configure the optimization of the conditional handover of the candidate secondary cell group. In order to assist the network side device to identify these cases, the terminal reports at least one of the first information to the network side device. The network side device determines whether to configure the optimization of CHO+candidate SCG according to the first information.

[0474] In some embodiments, the conditional handover of the candidate secondary cell group is not configured in at least one of the following cases:

[0475] There is no overlapping area between the PCell switching area and the PSCell switching area;

[0476] There is no overlap between the time when the PCell execution condition is met and the time when the PSCell execution condition is met;

[0477] The coverage area cannot meet the execution condition of the conditional handover of the candidate secondary cell group;

[0478] The conditional handover of the candidate secondary cell group cannot be configured; or it is understood that the CHO+candidate SCG should not be configured;

[0479] The conditional handover of the candidate secondary cell group cannot be configured, or it is understood that the CHO+candidate SCG should not be configured.

[0480] In this embodiment, the terminal reports first information to the network side device, the network side device identifies the at least one condition according to the first information, and then does not configure the optimization of the conditional handover of the candidate secondary cell group with conditions, and in other cases, the configuration of the conditional handover of the candidate secondary cell group with conditions can be optimized, thereby solving the problem of mobility failure. The "whether to configure the conditional handover of the candidate secondary cell group with conditions" in the embodiment of the disclosure can also be understood as whether the network side device optimizes the configuration of the conditional handover of the candidate secondary cell group with conditions after receiving the failure information reported by the terminal.

[0481] In the embodiment of the disclosure, after the network side device receives the failure information of the conditional handover of the candidate secondary cell group with conditions and the first information reported by the terminal, the condition of not configuring the optimization of the conditional handover can be excluded, and in the remaining cases, the failure type is determined and the corresponding optimization is performed. For example, for the CHO+candidate SCG execution error type, the parameters can be optimized to make the CHO+candidate SCG execution condition easier to meet, so as to achieve the goal of advancing the execution time point; for the CHO+candidate SCG execution error type, the parameters can be optimized to make the CHO+candidate SCG execution condition more difficult to meet, so as to achieve the goal of delaying the execution time point; for the CHO+candidate SCG execution error type, the parameters can be optimized to make the CHO+candidate SCG more easily select the target candidate PCell and PSCell, or the target PCell and PSCell can not be in the candidate cell list, and need to be added to the candidate cell list.

[0482] In the embodiment of the disclosure, the necessary information is collected from the UE to assist the network side device in judging the failure type of the CHO+candidate SCG. After determining the failure type, the mobility configuration can be optimized accordingly. For example, if the CHO+candidate SCG execution is too late, the execution condition needs to be made easier to meet, so as to achieve the goal of advancing the execution time point; if the CHO+candidate SCG execution is to an error cell, the correct cell needs to be added to the candidate cell list so that the execution can be performed to the correct target cell. Through the above optimization configuration, the handover success rate can be improved, and the network index can be improved.

[0483] The above embodiment introduces the information processing method of the conditional handover of the disclosure, and the corresponding device of the embodiment will be further described below with reference to the drawings.

[0484] Specifically, as shown in FIG. 5, the embodiment of the disclosure provides a conditional handover information processing device 500 applied to a terminal, which comprises:

[0485] The first sending unit 510 is configured to send, to a network side device, failure information of the conditional handover of the conditional candidate secondary cell group, and the failure information is used to determine a failure type of the conditional handover of the conditional candidate secondary cell group.

[0486] In some embodiments, the failure information is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group, and includes one of the following:

[0487] The failure information of the first time failure is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0488] The failure information of the MCG failure is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0489] The failure information of the MCG failure or the failure information of the SCG failure is used to determine the failure type of the conditional handover of the conditional candidate secondary cell group.

[0490] In some embodiments, the failure type includes at least one of the following:

[0491] The conditional handover of the conditional candidate secondary cell group is performed too late.

[0492] The conditional handover of the conditional candidate secondary cell group is performed too early.

[0493] The conditional handover of the conditional candidate secondary cell group is performed to an error cell.

[0494] In some embodiments, the first sending unit is specifically configured to perform one of the following:

[0495] During the conditional handover of the conditional candidate secondary cell group, the failure information of the first time failure is reported to the network side device.

[0496] During the conditional handover of the conditional candidate secondary cell group, only the failure information of the MCG failure is reported to the network side device.

[0497] During the conditional handover of the conditional candidate secondary cell group, according to indication information of the network side device, the failure information of the MCG failure or the failure information of the SCG failure is reported to the network side device.

[0498] In some embodiments, the apparatus further includes:

[0499] A second sending unit configured to send, to a network side device, first information used to determine whether to configure the conditional handover of the conditional candidate secondary cell group.

[0500] The first information includes at least one of the following:

[0501] time information when the PCell execution condition is met, and information whether the PSCell execution condition is met in case the PCell execution condition is met;

[0502] time information when the PCell execution condition is met, and information whether the PSCell execution condition is met in case the PCell execution condition is met;

[0503] time information when the PSCell execution condition is met, and information whether the PCell execution condition is met in case the PSCell execution condition is met;

[0504] measurement result when the PCell execution condition is met;

[0505] measurement result when the PSCell execution condition is met;

[0506] first identification information, used for indicating that the PCell execution condition and the PSCell execution condition are not met simultaneously;

[0507] second identification information, used for indicating that the measurement result of the PSCell is lower than a first value in case the PCell execution condition is met;

[0508] third identification information, used for indicating that the measurement result of the PCell is lower than a second value in case the PSCell execution condition is met;

[0509] fourth identification information, used for indicating that the PCell switching area and the PSCell switching area have no common coverage area.

[0510] In some embodiments, the conditional handover of the conditional candidate secondary cell group is not configured in at least one of the following cases:

[0511] the PCell switching area and the PSCell switching area have no overlapping area;

[0512] the time when the PCell execution condition is met and the time when the PSCell execution condition is met have no overlap;

[0513] the coverage area cannot meet the execution condition of the conditional handover of the conditional candidate secondary cell group;

[0514] the conditional handover of the conditional candidate secondary cell group cannot be configured;

[0515] the conditional handover of the conditional candidate secondary cell group cannot be configured optimally.

[0516] In some embodiments, the definition of the conditional handover of the conditional candidate secondary cell group being executed too late includes one of the following:

[0517] The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an SCG failure occurs before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, and the suitable PSCell selected by the terminal based on measurement is a PSCell different from the source PSCell.

[0518] The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an SCG failure occurs after the terminal accesses the source PSCell and stably camps for a first time, and the selected new PSCell is a PSCell different from the source PSCell.

[0519] The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an MCG RLF occurs before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, and the terminal reestablishes connection in a cell different from the source PCell.

[0520] The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an MCG RLF occurs after the terminal stably camps in the source cell for a second time, and the terminal reestablishes connection in a cell different from the source cell.

[0521] In some embodiments, the definition of premature execution of the conditional handover with the conditional candidate secondary cell group includes at least one of the following:

[0522] In the case of executing the conditional handover with the conditional candidate secondary cell group, the conditional handover with the conditional candidate secondary cell group fails to execute, or PSCell access fails, or an SCG failure occurs within a third time after the successful execution of the conditional handover with the conditional candidate secondary cell group, and the suitable PSCell selected by the terminal based on measurement is the source PSCell.

[0523] In the case of executing the conditional handover with the conditional candidate secondary cell group, PCell access fails, or an MCG RLF occurs within a fourth time after the successful execution of the conditional handover with the conditional candidate secondary cell group, and the terminal reestablishes connection in the source PCell.

[0524] In some embodiments, the definition of the conditional execution to an error cell includes at least one of the following:

[0525] In a case where conditional handover with a conditional candidate secondary cell group is performed, the conditional handover with the conditional candidate secondary cell group fails, or PSCell access fails, or SCG failure occurs within a fifth time after the conditional handover with the conditional candidate secondary cell group is successfully performed, and the terminal selects a suitable PSCell based on measurement, the suitable PSCell is a PSCell different from the source PSCell and different from the target PSCell;

[0526] In a case where conditional handover with a conditional candidate secondary cell group is performed, PCell access fails, or MCG RLF occurs within a sixth time after the conditional handover with the conditional candidate secondary cell group is successfully performed, and the terminal re-establishes a connection with a PCell different from the source PCell and different from the target PCell.

[0527] It should be noted that the above-mentioned device provided by the embodiments of the present disclosure can realize all method steps achieved by the above-mentioned method embodiments applied to the terminal, and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be described in detail.

[0528] Specifically, as shown in FIG. 6, the embodiments of the present disclosure provide an information processing device 600 for conditional handover, applied to a network side device, comprising:

[0529] A first receiving unit 610 is configured to receive failure information of conditional handover with a conditional candidate secondary cell group sent by a terminal.

[0530] A first determining unit 620 is configured to determine a failure type of the conditional handover with the conditional candidate secondary cell group according to the failure information.

[0531] In some embodiments, the first determining unit is specifically configured to perform one of the following:

[0532] Determine the failure type of the conditional handover with the conditional candidate secondary cell group according to the failure information of the first failure;

[0533] Determine the failure type of the conditional handover with the conditional candidate secondary cell group according to the failure information of the MCG failure;

[0534] Determine the failure type of the conditional handover with the conditional candidate secondary cell group according to the failure information of the MCG failure or the failure information of the SCG failure.

[0535] In some embodiments, the failure type includes at least one of the following:

[0536] Conditional handover with a conditional candidate secondary cell group is too late;

[0537] Conditional handover with conditional candidate secondary cell group is executed too early;

[0538] Conditional execution with conditional candidate secondary cell group is executed to an error cell.

[0539] In some embodiments, the apparatus further comprises:

[0540] A second receiving unit, configured to receive first information sent by a terminal;

[0541] A second determining unit, configured to determine whether to configure conditional handover with conditional candidate secondary cell group according to the first information;

[0542] The first information comprises at least one of the following:

[0543] Time information satisfying a PCell execution condition and time information satisfying a PSCell execution condition of a secondary cell group;

[0544] Time information of a PCell execution condition and information of whether a PSCell execution condition is satisfied in the case that the PCell execution condition is satisfied;

[0545] Time information of a PSCell execution condition and information of whether a PCell execution condition is satisfied in the case that the PSCell execution condition is satisfied;

[0546] Measurement result when the PCell execution condition is satisfied;

[0547] Measurement result when the PSCell execution condition is satisfied;

[0548] First identification information, used to indicate that the PCell execution condition and the PSCell execution condition are not satisfied at the same time;

[0549] Second identification information, used to indicate that the measurement result of the PSCell is lower than a first value in the case that the PCell execution condition is satisfied;

[0550] Third identification information, used to indicate that the measurement result of the PCell is lower than a second value in the case that the PSCell execution condition is satisfied;

[0551] Fourth identification information, used to indicate that there is no common coverage area between a PCell switching area and a PSCell switching area.

[0552] In some embodiments, the second determining unit is specifically configured to:

[0553] Determine not to configure the conditional handover with the conditional candidate secondary cell group in at least one of the following cases according to the first information:

[0554] There is no overlapping area between the PCell switching area and the PSCell switching area;

[0555] There is no overlapping time between the time when the PCell execution condition is met and the time when the PSCell execution condition is met;

[0556] The execution condition of the conditional switching of the conditional candidate secondary cell group cannot be met by the coverage area;

[0557] The conditional switching of the conditional candidate secondary cell group cannot be configured;

[0558] The configuration optimization of the conditional switching of the conditional candidate secondary cell group cannot be performed.

[0559] In some embodiments, the definition of the conditional switching of the conditional candidate secondary cell group being executed too late includes one of the following:

[0560] The terminal receives the configuration information of the conditional switching of the conditional candidate secondary cell group, an SCG failure occurs before the execution condition of the conditional switching of the conditional candidate secondary cell group is met, and the suitable PSCell selected by the terminal based on measurement is another PSCell different from the source PSCell;

[0561] The terminal receives the configuration information of the conditional switching of the conditional candidate secondary cell group, an SCG failure occurs after the terminal accesses the source PSCell cell and stably camps for a first time, and the selected new PSCell is another PSCell different from the source PSCell;

[0562] The terminal receives the configuration information of the conditional switching of the conditional candidate secondary cell group, an MCG RLF occurs before the execution condition of the conditional switching of the conditional candidate secondary cell group is met, and the terminal re-establishes connection in a cell different from the source PCell;

[0563] The terminal receives the configuration information of the conditional switching of the conditional candidate secondary cell group, an MCG RLF occurs after the terminal stably camps for a second time in the source cell before the execution condition of the conditional switching of the conditional candidate secondary cell group is met, and the terminal re-establishes connection in a cell different from the source cell.

[0564] In some embodiments, the definition of the conditional switching of the conditional candidate secondary cell group being executed too early includes at least one of the following:

[0565] In the case of executing the conditional switching of the conditional candidate secondary cell group, the conditional switching of the conditional candidate secondary cell group fails to execute, or the PSCell fails to access, or an SCG failure occurs within a third time after the conditional switching of the conditional candidate secondary cell group is successfully executed, and the suitable PSCell selected by the terminal based on measurement is the source PSCell;

[0566] In a case where the conditional handover with the conditional candidate secondary cell group is performed, the PCell access fails, or an MCG RLF occurs within a fourth time after the conditional handover with the conditional candidate secondary cell group is successfully performed, the terminal reestablishes connection at a PCell different from the source PCell and different from a target PCell.

[0567] In some embodiments, the definition of the conditional execution to an error cell of the conditional candidate secondary cell group includes at least one of the following:

[0568] In a case where the conditional handover with the conditional candidate secondary cell group is performed, the conditional handover with the conditional candidate secondary cell group fails, or the PSCell access fails, or an SCG failure occurs within a fifth time after the conditional handover with the conditional candidate secondary cell group is successfully performed, the terminal selects a suitable PSCell based on measurement, which is a PSCell different from the source PSCell and different from a target PSCell;

[0569] In a case where the conditional handover with the conditional candidate secondary cell group is performed, the PCell access fails, or an MCG RLF occurs within a sixth time after the conditional handover with the conditional candidate secondary cell group is successfully performed, the terminal reestablishes connection at a PCell different from the source PCell and different from a target PCell.

[0570] It should be noted that the above-mentioned apparatus provided by the embodiments of the present disclosure can realize all the method steps realized by the method embodiments applied to the network side device, and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be described in detail.

[0571] It should be noted that the division of units in the embodiments of the present disclosure is illustrative, and is only a logical function division. Actual implementation can have another division manner. In addition, each functional unit in each embodiment of the present disclosure can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware, or in the form of a software functional unit.

[0572] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a processor-readable storage medium. Based on such understanding, the technical solutions of the disclosure, essentially or parts of the related art that make contributions, or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in the various embodiments of the disclosure. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0573] As shown in FIG. 7, the embodiment of the disclosure further provides a terminal, comprising: a memory 720, a transceiver 700, a processor 710; wherein the memory 720 is used for storing a computer program; the transceiver 700 is used for receiving and sending data under the control of the processor 710; the processor 710 is used for reading the computer program in the memory and performing the following operations:

[0574] The failure information of the conditional handover of the candidate secondary cell group with conditions is sent to a network side device, and the failure information is used to determine a failure type of the conditional handover of the candidate secondary cell group with conditions.

[0575] In some embodiments, the failure information is used to determine the failure type of the conditional handover of the candidate secondary cell group with conditions, including one of the following:

[0576] The failure information of the first failure is used to determine the failure type of the conditional handover of the candidate secondary cell group with conditions;

[0577] The failure information of the MCG failure is used to determine the failure type of the conditional handover of the candidate secondary cell group with conditions;

[0578] The failure information of the MCG failure or the failure information of the SCG failure is used to determine the failure type of the conditional handover of the candidate secondary cell group with conditions.

[0579] In some embodiments, the failure type includes at least one of the following:

[0580] The conditional handover of the candidate secondary cell group with conditions is executed too late;

[0581] The conditional handover of the candidate secondary cell group with conditions is executed too early;

[0582] Conditional execution of a conditional candidate secondary cell group to an error cell.

[0583] In some embodiments, the processor is configured to read a computer program in the memory and perform one of the following operations:

[0584] In a conditional handover process with a conditional candidate secondary cell group, report failure information of the first failure to the network side device;

[0585] In a conditional handover process with a conditional candidate secondary cell group, only report failure information of MCG failure to the network side device;

[0586] In a conditional handover process with a conditional candidate secondary cell group, according to the indication information of the network side device, report failure information of MCG failure or failure information of SCG failure to the network side device.

[0587] In some embodiments, the processor is configured to read a computer program in the memory and perform the following operations:

[0588] Send first information to the network side device, the first information is used to determine whether to configure a conditional handover with a conditional candidate secondary cell group;

[0589] The first information includes at least one of the following:

[0590] Time information of PCell execution condition and time information of PSCell execution condition of secondary cell group execution condition;

[0591] Time information of PCell execution condition, and information of whether PSCell execution condition is met in the case of PCell execution condition being met;

[0592] Time information of PSCell execution condition, and information of whether PCell execution condition is met in the case of PSCell execution condition being met;

[0593] Measurement result when PCell execution condition is met;

[0594] Measurement result when PSCell execution condition is met;

[0595] First identification information, used to indicate that PCell execution condition and PSCell execution condition are not met at the same time;

[0596] Second identification information, used to indicate that the measurement result of PSCell is lower than the first value in the case of meeting PCell execution condition;

[0597] The third identification information is used to indicate that the measurement result of the PCell is lower than a second value when the PSCell execution condition is met.

[0598] The fourth identification information is used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

[0599] In some embodiments, the conditional handover of the conditional candidate secondary cell group is not configured in at least one of the following cases:

[0600] The PCell switching area and the PSCell switching area have no overlapping area;

[0601] The time when the PCell execution condition is met and the time when the PSCell execution condition is met have no overlap;

[0602] The coverage area cannot meet the execution condition of the conditional handover of the conditional candidate secondary cell group;

[0603] The conditional handover of the conditional candidate secondary cell group cannot be configured;

[0604] The conditional handover of the conditional candidate secondary cell group cannot be configured optimally.

[0605] In some embodiments, the definition of the conditional handover of the conditional candidate secondary cell group being too late includes one of the following:

[0606] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an SCG failure occurs before the execution condition of the conditional handover of the conditional candidate secondary cell group is met, and the suitable PSCell selected by the terminal based on measurement is another PSCell different from the source PSCell;

[0607] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an SCG failure occurs after the terminal accesses the source PSCell cell and stably camps for a first time, and the selected new PSCell is another PSCell different from the source PSCell;

[0608] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an MCG RLF occurs before the execution condition of the conditional handover of the conditional candidate secondary cell group is met, and the terminal reestablishes connection in a cell different from the source PCell;

[0609] The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an MCG RLF occurs after the terminal stably camps in the source cell for a second time, and the terminal reestablishes connection in a cell different from the source cell.

[0610] In some embodiments, the definition of the conditional execution of the conditional candidate secondary cell group includes at least one of the following:

[0611] In the case of performing the conditional handover of the conditional candidate secondary cell group, the conditional handover of the conditional candidate secondary cell group fails, or the PSCell access fails, or the SCG failure occurs within a third time after the successful execution of the conditional handover of the conditional candidate secondary cell group, and the suitable PSCell selected by the terminal based on the measurement is the source PSCell;

[0612] In the case of performing the conditional handover of the conditional candidate secondary cell group, the PCell access fails, or the MCG RLF occurs within a fourth time after the successful execution of the conditional handover of the conditional candidate secondary cell group, and the terminal re-establishes the connection in the source PCell.

[0613] In some embodiments, the definition of the conditional execution of the conditional candidate secondary cell group to an error cell includes at least one of the following:

[0614] In the case of performing the conditional handover of the conditional candidate secondary cell group, the conditional handover of the conditional candidate secondary cell group fails, or the PSCell access fails, or the SCG failure occurs within a fifth time after the successful execution of the conditional handover of the conditional candidate secondary cell group, and the suitable PSCell selected by the terminal based on the measurement is a PSCell different from the source PSCell and different from the target PSCell;

[0615] In the case of performing the conditional handover of the conditional candidate secondary cell group, the PCell access fails, or the MCG RLF occurs within a sixth time after the successful execution of the conditional handover of the conditional candidate secondary cell group, and the terminal re-establishes the connection in a PCell different from the source PCell and different from the target PCell.

[0616] In FIG. 7, the bus architecture can include any number of interconnected buses and bridges, specifically, various circuitry of one or more processors represented by the processor 710 and memory represented by the memory 720 are linked together. The bus architecture can also link various other circuitry such as peripheral devices, voltage regulators, and power management circuitry, which are well known in the art, and thus, further description thereof is not provided herein. The bus interface provides an interface. The transceiver 700 can be a plurality of elements, i.e., including a transmitter and a receiver, providing a unit for communicating with various other devices on transmission media, including wireless channels, wired channels, optical cables, and the like. The user interface 730 can also be an interface capable of externally connecting the required devices for different user equipment, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0617] The processor 710 is responsible for managing the bus architecture and general processing, and the memory 720 can store data used by the processor 710 in performing operations.

[0618] In some embodiments, 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.

[0619] The processor executes any of the methods provided by the embodiments of the present disclosure by calling the computer program stored in the memory according to the obtained executable instructions. The processor and the memory can also be physically arranged separately.

[0620] It should be noted that the above terminal provided by the embodiments of the present disclosure can implement all the method steps implemented by the method embodiments applied to the terminal, and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments are not described in detail herein.

[0621] As shown in FIG. 8, the embodiments of the present disclosure also provide a network side device, comprising: a memory 820, a transceiver 800, a processor 810; wherein the memory 820 is configured to store a computer program; the transceiver 800 is configured to receive and send data under the control of the processor 810; the processor 810 is configured to read the computer program in the memory and perform the following operations:

[0622] receiving failure information of the conditional handover with the conditional candidate secondary cell group sent by the terminal;

[0623] determining a failure type of the conditional handover with the conditional candidate secondary cell group according to the failure information.

[0624] In some embodiments, the processor is configured to read a computer program in the memory and perform one of the following operations:

[0625] determining a failure type of the conditional handover with the conditional candidate secondary cell group according to the failure information of the first failure;

[0626] determining a failure type of the conditional handover with the conditional candidate secondary cell group according to the failure information of the MCG failure;

[0627] determining a failure type of the conditional handover with the conditional candidate secondary cell group according to the failure information of the MCG failure or the failure information of the SCG failure.

[0628] In some embodiments, the failure type includes at least one of the following:

[0629] the conditional handover with the conditional candidate secondary cell group is executed too late;

[0630] the conditional handover with the conditional candidate secondary cell group is executed too early;

[0631] the conditional handover with the conditional candidate secondary cell group is executed to an error cell.

[0632] In some embodiments, the processor is configured to read a computer program in the memory and perform the following operations:

[0633] receiving first information sent by the terminal;

[0634] determining whether to configure the conditional handover with the conditional candidate secondary cell group according to the first information;

[0635] The first information includes at least one of the following:

[0636] time information of a PCell execution condition being met and time information of a PSCell execution condition of a secondary cell group being met;

[0637] time information of a PCell execution condition being met and information of whether a PSCell execution condition is met in the case of the PCell execution condition being met;

[0638] time information of a PSCell execution condition being met and information of whether a PCell execution condition is met in the case of the PSCell execution condition being met;

[0639] measurement result when the PCell execution condition is met;

[0640] measurement result when the PSCell execution condition is met;

[0641] first identification information, used to indicate that the PCell execution condition and the PSCell execution condition are not met at the same time;

[0642] second identification information, used to indicate that the measurement result of the PSCell is lower than a first value when the PCell execution condition is met;

[0643] third identification information, used to indicate that the measurement result of the PCell is lower than a second value when the PSCell execution condition is met;

[0644] fourth identification information, used to indicate that the PCell switching area and the PSCell switching area have no common coverage area.

[0645] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0646] determining, according to the first information, that the conditional handover of the conditional candidate secondary cell group is not configured in at least one of the following cases:

[0647] there is no overlapping area between the PCell switching area and the PSCell switching area;

[0648] there is no overlap between the time when the PCell execution condition is met and the time when the PSCell execution condition is met;

[0649] the coverage area cannot meet the execution condition of the conditional handover of the conditional candidate secondary cell group;

[0650] the conditional handover of the conditional candidate secondary cell group cannot be configured;

[0651] the conditional handover of the conditional candidate secondary cell group cannot be configured optimally.

[0652] In some embodiments, the definition of the conditional handover of the conditional candidate secondary cell group being executed too late includes one of the following:

[0653] the terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, before the execution condition of the conditional handover of the conditional candidate secondary cell group is met, an SCG failure occurs, and the terminal selects a suitable PSCell based on measurement, which is a PSCell other than the source PSCell;

[0654] The terminal receives configuration information of conditional handover with a conditional candidate secondary cell group, accesses a source PSCell cell and stably camps for a first time, and then SCG failure occurs, and the selected new PSCell is different from the source PSCell;

[0655] The terminal receives configuration information of conditional handover with a conditional candidate secondary cell group, and before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, MCG RLF occurs, and the terminal re-establishes connection in a cell different from the source PCell;

[0656] The terminal receives configuration information of conditional handover with a conditional candidate secondary cell group, and before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, MCG RLF occurs after the terminal stably camps in the source cell for a second time, and the terminal re-establishes connection in a cell different from the source cell.

[0657] In some embodiments, the definition of premature execution of conditional handover with a conditional candidate secondary cell group includes at least one of the following:

[0658] In the case of executing conditional handover with a conditional candidate secondary cell group, the conditional handover with a conditional candidate secondary cell group fails to execute, or PSCell access fails, or SCG failure occurs within a third time after the successful execution of the conditional handover with a conditional candidate secondary cell group, and the terminal selects a suitable PSCell based on measurement, which is the source PSCell;

[0659] In the case of executing conditional handover with a conditional candidate secondary cell group, PCell access fails, or MCG RLF occurs within a fourth time after the successful execution of the conditional handover with a conditional candidate secondary cell group, and the terminal re-establishes connection in the source PCell.

[0660] In some embodiments, the definition of the conditional execution to an error cell with a conditional candidate secondary cell group includes at least one of the following:

[0661] In the case of executing conditional handover with a conditional candidate secondary cell group, the conditional handover with a conditional candidate secondary cell group fails to execute, or PSCell access fails, or SCG failure occurs within a fifth time after the successful execution of the conditional handover with a conditional candidate secondary cell group, and the terminal selects a suitable PSCell based on measurement, which is a PSCell different from the source PSCell and different from the target PSCell;

[0662] In a case where conditional handover with a conditional candidate secondary cell group is performed, a PCell access fails, or an MCG RLF occurs within a sixth time after the conditional handover with the conditional candidate secondary cell group is successfully performed, the terminal reestablishes connection with a PCell different from the source PCell and different from a target PCell.

[0663] In FIG. 8, the bus architecture can include any number of interconnected buses and bridges, which are used to link various circuits, including the processor 810, which is representative of one or more processors, and the memory 820, which is representative of the memory. 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 thus, will not be described further herein. The bus interface provides an interface. The transceiver 800 can be a plurality of elements, including a transmitter and a receiver, which provide a means for communicating with various other apparatuses over a transmission medium, including a wireless channel, a wired channel, optical cable, and the like. 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 in executing operations.

[0664] 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), and the processor can also adopt a multi-core architecture.

[0665] It should be noted that the network side device provided by the embodiments of the present disclosure can implement all the method steps of the method embodiments applied to the network side device, and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be described in detail.

[0666] In addition, the embodiments of the present disclosure further provide a processor-readable storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the steps of the information processing method for conditional handover as described above and achieves the same technical effects. To avoid repetition, details are not described herein. The readable storage medium can be any available medium or data storage device accessible by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto optical disks (MO), etc.), optical storage (such as compact discs (CD), digital video discs (DVD), Blu-ray discs (BD), high-definition versatile discs (HVD), etc.), and semiconductor storage (such as ROM, erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), non-volatile memory (NAND FLASH), solid state drives (SSD), etc.).

[0667] It should be noted that the technical solutions provided by the embodiments of the present disclosure can be applied to various systems. For example, the applicable systems can be a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a long term evolution advanced (LTE-A) system, a universal mobile system (UMTS), a worldwide interoperability for microwave access (WiMAX) system, a 5th generation mobile communication technology (5G) new radio (NR) system and its evolution communication system, a 6th generation mobile communication technology (6G) system, etc. Among these various systems, there can be terminal devices and network devices. The system can also include a core network part, such as an evolved packet system (EPC), a 5G core network (5GC), etc.

[0668] The terminal device involved in the embodiments of the present disclosure can refer to a device that provides voice and / or data connectivity for a user, a handheld device with wireless connection function, or other processing devices connected to a wireless modem, etc. In different systems, the name of the terminal device can also be different, for example, in the 5G system or the 6G system, the terminal device can be called user equipment (User Equipment, UE). The wireless terminal device can be a USB storage device, other personal computer memory devices and a dongle, and can also communicate with one or more core networks (Core Network, CN) through a radio access network (Radio Access Network, RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (or called "cellular" phone) and a computer with a mobile terminal device, for example, it can be a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device, which exchanges language and / or data with the radio access network. For example, personal communication service (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDA), personal computers, tablet computers, machine type communication (Machine-type Communication, MTC) terminal devices, etc. The wireless terminal device can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, and a wireless access device and a router / modem that meet the limitations of the present definition, etc. The embodiments of the present disclosure are not limited.

[0669] The network side device according to the embodiments of the present disclosure can be a base station, which can include a plurality of cells serving terminals. According to different application scenarios, the base station can also be referred to as an access point, or can be a device in an access network that communicates with wireless terminal devices through one or more sectors over an air interface, or other names. The network side device can be used to exchange received air frames and Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which can include an Internet Protocol (IP) communication network. The network side device can also coordinate the management of the properties of the air interface. For example, the network side device according to the embodiments of the present disclosure can be an evolved network device (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a 5G network architecture, and the like. It can also be a home evolved base station (HeNB), a relay node, a femto, a pico, a network test device, and the like, which are not limited in the embodiments of the present disclosure. In some network structures, the network side device can include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit can also be arranged geographically apart.

[0670] The network device and the terminal device can each use one or more antennas for Multiple-Input Multiple-Output (MIMO) transmission, which can be single-user MIMO or multi-user MIMO. According to the shape and number of antenna combinations, MIMO transmission can be two-dimensional MIMO (2D-MIMO), three-dimensional MIMO (3D-MIMO), full-dimensional MIMO (FD-MIMO), or massive-MIMO, or can be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0671] Those skilled in the art will appreciate that embodiments of the disclosure can be readily used as a method, a system or a computer program product. Accordingly, the disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the disclosure can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage and so forth) having computer-usable program code embodied in the medium.

[0672] The disclosure is described in reference to the flowchart and / or block diagrams of the method, apparatus (system) and computer program product according to embodiments of the disclosure. It should be understood that each flow and / or block in the flowchart and / or block diagrams, and a combination of flows and / or blocks in the flowchart and / or block diagrams, can be implemented by computer executable instructions. The computer executable instructions can be provided to a processor of a general purpose computer, a special purpose computer, an 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 the flowchart and / or block diagram block or blocks.

[0673] These processor executable instructions can also be stored in a processor readable memory that can direct the computer or other programmable data processing apparatus to function 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 function specified in the flowchart and / or block diagram block or blocks.

[0674] These processor executable instructions can 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 executed on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart and / or block diagram block or blocks.

[0675] Moreover, it should be noted that in the apparatus and method of the present disclosure, it is apparent that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present disclosure. Moreover, the steps of performing the above series of processes can naturally be executed in time sequence according to the order of description, but do not necessarily have to be executed in time sequence, and some steps can be executed in parallel or independently of each other. It can be understood by those skilled in the art that all or any steps or components of the method and apparatus of the present disclosure can be implemented in hardware, firmware, software, or a combination thereof, in any computing device (including processors, storage media, etc.) or network of computing devices, using the basic programming skills of those skilled in the art upon reading the description of the present disclosure.

[0676] It should be noted that it should be understood that the division of each module above is only a logical division of functions, and in actual implementation, all or part of them can be integrated into one physical entity, or can be physically separated. Moreover, these modules can all be implemented in the form of software called by a processing element; all can be implemented in the form of hardware; or some modules can be implemented in the form of software called by a processing element, and some modules can be implemented in the form of hardware. For example, a certain module can be a separately established processing element, or can be integrated into a certain chip of the above apparatus, in addition, it can also be stored in the form of program code in the memory of the above apparatus, and called and executed by a certain processing element of the above apparatus to determine the function of the above module. The implementation of other modules is similar. Moreover, all or part of these modules can be integrated together, or can be independently implemented. The processing element described herein can be an integrated circuit having a signal processing capability. In the implementation process, each step of the above method or each of the above modules can be completed by the integrated logic circuit of hardware or the instruction of software in the processing element.

[0677] For example, each module, unit, subunit, or submodule can be one or more integrated circuits configured to implement the above methods, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs). As another example, when a module is implemented using processing element scheduler code, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of calling program code. Furthermore, these modules can be integrated together to implement a system-on-a-chip (SOC).

[0678] The terms “first,” “second,” etc., used in this disclosure and in the claims are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this disclosure described herein may be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. Additionally, the use of “and / or” in the specification and claims indicates at least one of the connected objects, such as A and / or B and / or C, indicating seven possibilities: A alone, B alone, C alone, and both A and B, both B and C, both A and C, and A, B, and C. Similarly, the use of “at least one of A and B” in this specification and claims should be understood as “A alone, B alone, or both A and B.”

[0679] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. An information processing method of conditional handover, applied to a terminal, the method comprising: sending, to a network side device, failure information of conditional handover with a conditional candidate secondary cell group, the failure information being used to determine a failure type of the conditional handover with the conditional candidate secondary cell group.

2. The method of claim 1, wherein, The failure information comprises one of: failure information of a first time failure; failure information of MCG failure; failure information of MCG failure or failure information of SCG failure.

3. The method of claim 1 or 2, wherein, The failure type comprises at least one of: the conditional handover with the conditional candidate secondary cell group is executed too late; the conditional handover with the conditional candidate secondary cell group is executed too early; the conditional execution with the conditional candidate secondary cell group is executed to an error cell.

4. The method of claim 1 or 2, wherein, The sending, to the network side device, of the failure information of the conditional handover with the conditional candidate secondary cell group comprises one of: reporting, to the network side device, the failure information of the first time failure during the conditional handover with the conditional candidate secondary cell group; reporting, to the network side device, only the failure information of MCG failure during the conditional handover with the conditional candidate secondary cell group; reporting, to the network side device, the failure information of MCG failure or the failure information of SCG failure according to indication information of the network side device during the conditional handover with the conditional candidate secondary cell group.

5. The method of claim 1, wherein, The method further comprises: sending, to the network side device, first information used to determine whether to configure the conditional handover with the conditional candidate secondary cell group; The first information comprises at least one of: time information of a primary cell PCell execution condition and time information of a secondary cell group primary cell PSCell execution condition; time information of a PCell execution condition and information of whether a PSCell execution condition is satisfied in the case that the PCell execution condition is satisfied; time information of a PSCell execution condition and information of whether a PCell execution condition is satisfied in the case that the PSCell execution condition is satisfied; a measurement result when the PCell execution condition is satisfied; a measurement result when the PSCell execution condition is satisfied; first identification information used to indicate that the PCell execution condition and the PSCell execution condition are not satisfied at the same time; second identification information used to indicate that a measurement result of the PSCell is lower than a first value in the case that the PCell execution condition is satisfied; third identification information used to indicate that a measurement result of the PCell is lower than a second value in the case that the PSCell execution condition is satisfied; fourth identification information used to indicate that there is no common coverage area between a PCell switching area and a PSCell switching area.

6. The method of claim 5, wherein, The conditional handover with the conditional candidate secondary cell group is not configured in at least one of the following cases: there is no overlapping area between the PCell switching area and the PSCell switching area; there is no overlap between the time when the PCell execution condition is satisfied and the time when the PSCell execution condition is satisfied; a coverage area cannot satisfy an execution condition of the conditional handover with the conditional candidate secondary cell group; the conditional handover with the conditional candidate secondary cell group cannot be configured. Configuration optimization of the conditional handover with the conditional candidate secondary cell group cannot be performed.

7. The method of claim 3, wherein, The definition of the conditional handover with the conditional candidate secondary cell group being performed too late includes one of the following: The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an SCG failure occurs before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, and the suitable PSCell selected by the terminal based on measurement is another PSCell different from the source PSCell; The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an SCG failure occurs after the terminal accesses the source PSCell cell and stably camps for a first time, and the selected new PSCell is another PSCell different from the source PSCell; The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an MCG radio link failure (RLF) occurs before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, and the terminal reestablishes connection in a cell different from the source PCell; The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an MCG RLF occurs after the terminal stably camps in the source cell for a second time, and the terminal reestablishes connection in a cell different from the source cell.

8. The method of claim 3, wherein, The definition of the conditional handover with the conditional candidate secondary cell group being performed too early includes at least one of the following: In the case of performing the conditional handover with the conditional candidate secondary cell group, the conditional handover with the conditional candidate secondary cell group fails to be performed, or PSCell access fails, or an SCG failure occurs within a third time after the conditional handover with the conditional candidate secondary cell group is successfully performed, and the suitable PSCell selected by the terminal based on measurement is the source PSCell; In the case of performing the conditional handover with the conditional candidate secondary cell group, PCell access fails, or an MCG RLF occurs within a fourth time after the conditional handover with the conditional candidate secondary cell group is successfully performed, and the terminal reestablishes connection in the source PCell.

9. The method of claim 3, wherein, The definition of the conditional handover with the conditional candidate secondary cell group being performed to an error cell includes at least one of the following: In the case of performing the conditional handover with the conditional candidate secondary cell group, the conditional handover with the conditional candidate secondary cell group fails to be performed, or PSCell access fails, or an SCG failure occurs within a fifth time after the conditional handover with the conditional candidate secondary cell group is successfully performed, and the suitable PSCell selected by the terminal based on measurement is another PSCell different from the source PSCell and different from the target PSCell; In the case of performing the conditional handover with the conditional candidate secondary cell group, PCell access fails, or an MCG RLF occurs within a sixth time after the conditional handover with the conditional candidate secondary cell group is successfully performed, and the terminal reestablishes connection in another PCell different from the source PCell and different from the target PCell.

10. An information processing method of conditional handover, in which Applied to a network side device, comprising: Receiving the failure information of the conditional handover with the conditional candidate secondary cell group sent by the terminal; According to the failure information, a failure type of the conditional handover of the conditional candidate secondary cell group is determined.

11. The method of claim 10, wherein, According to the failure information, a failure type of the conditional handover of the conditional candidate secondary cell group is determined, including one of the following: According to the failure information of the first occurrence of failure, a failure type of the conditional handover of the conditional candidate secondary cell group is determined. According to the failure information of MCG failure, a failure type of the conditional handover of the conditional candidate secondary cell group is determined. According to the failure information of MCG failure or the failure information of SCG failure, a failure type of the conditional handover of the conditional candidate secondary cell group is determined.

12. The method of claim 10 or 11, wherein, The failure type includes at least one of the following: The conditional handover of the conditional candidate secondary cell group is executed too late. The conditional handover of the conditional candidate secondary cell group is executed too early. The conditional execution of the conditional candidate secondary cell group is executed to an error cell.

13. The method of claim 10, wherein, The method further includes: Receiving first information sent by a terminal; According to the first information, determining whether to configure the conditional handover of the conditional candidate secondary cell group; The first information includes at least one of the following: Time information satisfying the execution condition of the primary cell PCell and time information satisfying the execution condition of the primary secondary cell PSCell of the secondary cell group; Time information of the execution condition of the PCell, and information of whether the execution condition of the PSCell is satisfied in the case of satisfying the execution condition of the PCell; Time information of the execution condition of the PSCell, and information of whether the execution condition of the PCell is satisfied in the case of satisfying the execution condition of the PSCell; Measurement result when the execution condition of the PCell is satisfied; Measurement result when the execution condition of the PSCell is satisfied; First identification information for indicating that the execution condition of the PCell and the execution condition of the PSCell are not satisfied at the same time; Second identification information for indicating that the measurement result of the PSCell is lower than a first value in the case of satisfying the execution condition of the PCell; Third identification information for indicating that the measurement result of the PCell is lower than a second value in the case of satisfying the execution condition of the PSCell; Fourth identification information for indicating that there is no common coverage area between the PCell switching area and the PSCell switching area.

14. The method of claim 13, wherein, According to the first information, determining whether to configure the conditional handover of the conditional candidate secondary cell group includes: According to the first information, it is determined that the conditional handover of the conditional candidate secondary cell group is not configured in at least one of the following cases: There is no overlapping area between the PCell switching area and the PSCell switching area; There is no overlap between the time satisfying the execution condition of the PCell and the time satisfying the execution condition of the PSCell; The coverage area cannot satisfy the execution condition of the conditional handover of the conditional candidate secondary cell group; The conditional handover of the conditional candidate secondary cell group cannot be configured; The configuration optimization of the conditional handover of the conditional candidate secondary cell group cannot be performed.

15. The method of claim 12, wherein, The definition of the conditional handover of the conditional candidate secondary cell group being executed too late includes one of the following: The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an SCG failure occurs before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, and the suitable PSCell selected by the terminal based on measurement is a PSCell different from the source PSCell; The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an SCG failure occurs after the terminal accesses the source PSCell cell and stably camps for a first time, and the selected new PSCell is a PSCell different from the source PSCell; The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an MCG RLF occurs before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, and the terminal re-establishes connection in a cell different from the source PCell; The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, an MCG RLF occurs after the terminal stably camps in the source cell for a second time, and the terminal re-establishes connection in a cell different from the source cell.

16. The method of claim 12, wherein, The definition of the conditional handover with the conditional candidate secondary cell group being executed too early includes at least one of the following: In the case of executing the conditional handover with the conditional candidate secondary cell group, the conditional handover with the conditional candidate secondary cell group fails to be executed, or PSCell access fails, or an SCG failure occurs within a third time after the conditional handover with the conditional candidate secondary cell group is successfully executed, and the suitable PSCell selected by the terminal based on measurement is the source PSCell; In the case of executing the conditional handover with the conditional candidate secondary cell group, PCell access fails, or an MCG RLF occurs within a fourth time after the conditional handover with the conditional candidate secondary cell group is successfully executed, and the terminal re-establishes connection in the source PCell.

17. The method of claim 12, wherein, The definition of the conditional handover with the conditional candidate secondary cell group being executed to an error cell includes at least one of the following: In the case of executing the conditional handover with the conditional candidate secondary cell group, the conditional handover with the conditional candidate secondary cell group fails to be executed, or PSCell access fails, or an SCG failure occurs within a fifth time after the conditional handover with the conditional candidate secondary cell group is successfully executed, and the suitable PSCell selected by the terminal based on measurement is a PSCell different from the source PSCell and different from the target PSCell; In the case of executing the conditional handover with the conditional candidate secondary cell group, PCell access fails, or an MCG RLF occurs within a sixth time after the conditional handover with the conditional candidate secondary cell group is successfully executed, and the terminal re-establishes connection in a PCell different from the source PCell and different from the target PCell.

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

19. The terminal of claim 18, wherein, The failure information includes one of the following: The failure information of the first failure; The failure information of the MCG failure; The failure information of the MCG failure or the failure information of the SCG failure.

20. The terminal according to claim 18 or 19, wherein, The failure type includes at least one of the following: The conditional handover of the conditional candidate secondary cell group is executed too late; The conditional handover of the conditional candidate secondary cell group is executed too early; The conditional execution of the conditional candidate secondary cell group is executed to an error cell.

21. The terminal according to claim 18 or 19, wherein The processor is used to read the computer program in the memory and perform one of the following operations: During the conditional handover of the conditional candidate secondary cell group, the network-side device is reported with the failure information of the first failure; During the conditional handover of the conditional candidate secondary cell group, the network-side device is reported with the failure information of the MCG failure; During the conditional handover of the conditional candidate secondary cell group, the network-side device is reported with the failure information of the MCG failure or the failure information of the SCG failure according to the indication information of the network-side device.

22. The terminal of claim 18, wherein, The processor is used to read the computer program in the memory and perform the following operations: The network-side device is sent with first information, and the first information is used to determine whether to configure the conditional handover of the conditional candidate secondary cell group. The first information includes at least one of the following: Time information of the execution condition of the primary cell PCell and time information of the execution condition of the primary secondary cell PSCell of the secondary cell group; Time information of the execution condition of the PCell and information of whether the execution condition of the PSCell is satisfied in the case of the execution condition of the PCell being satisfied; Time information of the execution condition of the PSCell and information of whether the execution condition of the PCell is satisfied in the case of the execution condition of the PSCell being satisfied; Measurement results when the execution condition of the PCell is satisfied; Measurement results when the execution condition of the PSCell is satisfied; First identification information used to indicate that the execution condition of the PCell and the execution condition of the PSCell are not satisfied at the same time; Second identification information used to indicate that the measurement result of the PSCell is lower than a first value in the case of the execution condition of the PCell being satisfied; Third identification information used to indicate that the measurement result of the PCell is lower than a second value in the case of the execution condition of the PSCell being satisfied; Fourth identification information used to indicate that there is no common coverage area of the PCell switching area and the PSCell switching area.

23. The terminal of claim 22, wherein, In at least one of the following cases, the conditional handover of the conditional candidate secondary cell group is not configured: There is no overlapping area of the PCell switching area and the PSCell switching area; There is no overlap between the time of satisfying the execution condition of the PCell and the time of satisfying the execution condition of the PSCell; The coverage area cannot satisfy the execution condition of the conditional handover of the conditional candidate secondary cell group; The conditional handover of the conditional candidate secondary cell group cannot be configured; The configuration optimization of the conditional handover of the conditional candidate secondary cell group cannot be performed.

24. The terminal of claim 20, wherein, The definition of the execution of the conditional handover of the conditional candidate secondary cell group being too late includes the following one: The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an SCG failure occurs before the execution condition of the conditional handover of the conditional candidate secondary cell group is met, and the suitable PSCell selected by the terminal based on measurement is another PSCell different from the source PSCell; The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an SCG failure occurs after the terminal accesses the source PSCell cell and stably camps for a first time, and the selected new PSCell is another PSCell different from the source PSCell; The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an MCG RLF occurs before the execution condition of the conditional handover of the conditional candidate secondary cell group is met, and the terminal re-establishes connection in a cell different from the source PCell; The terminal receives the configuration information of the conditional handover of the conditional candidate secondary cell group, an MCG RLF occurs after the terminal stably camps for a second time in the source cell, and the terminal re-establishes connection in a cell different from the source cell.

25. The terminal of claim 20, wherein, The definition of the execution of the conditional handover of the conditional candidate secondary cell group being too early includes the following at least one: In the case of executing the conditional handover of the conditional candidate secondary cell group, the conditional handover of the conditional candidate secondary cell group fails to execute, or PSCell access fails, or an SCG failure occurs within a third time after the execution of the conditional handover of the conditional candidate secondary cell group succeeds, and the suitable PSCell selected by the terminal based on measurement is the source PSCell; In the case of executing the conditional handover of the conditional candidate secondary cell group, PCell access fails, or an MCG RLF occurs within a fourth time after the execution of the conditional handover of the conditional candidate secondary cell group succeeds, and the terminal re-establishes connection in the source PCell.

26. The terminal of claim 20, wherein, The definition of the execution of the conditional handover of the conditional candidate secondary cell group being too early includes the following at least one: In the case of executing the conditional handover of the conditional candidate secondary cell group, the conditional handover of the conditional candidate secondary cell group fails to execute, or PSCell access fails, or an SCG failure occurs within a fifth time after the execution of the conditional handover of the conditional candidate secondary cell group succeeds, and the suitable PSCell selected by the terminal based on measurement is another PSCell different from the source PSCell and different from the target PSCell; In the case of executing the conditional handover of the conditional candidate secondary cell group, PCell access fails, or an MCG RLF occurs within a sixth time after the execution of the conditional handover of the conditional candidate secondary cell group succeeds, and the terminal re-establishes connection in another PCell different from the source PCell and different from the target PCell.

27. A network-side device comprising: Memory, transceiver, processor: Memory, for storing a computer program; Transceiver, for receiving and sending data under the control of the processor; A processor is configured to read a computer program in the memory and perform the following operations: receiving failure information of conditional handover with a conditional candidate secondary cell group sent by a terminal; determining a failure type of the conditional handover with the conditional candidate secondary cell group according to the failure information.

28. The apparatus of claim 27, wherein, The processor is configured to read a computer program in the memory and perform one of the following operations: determining the failure type of the conditional handover with the conditional candidate secondary cell group according to the failure information of the first occurrence of failure; determining the failure type of the conditional handover with the conditional candidate secondary cell group according to the failure information of MCG failure; determining the failure type of the conditional handover with the conditional candidate secondary cell group according to the failure information of MCG failure or the failure information of SCG failure.

29. The apparatus of claim 27 or 28, wherein, The failure type includes at least one of the following: the conditional handover with the conditional candidate secondary cell group is executed too late; the conditional handover with the conditional candidate secondary cell group is executed too early; the conditional execution with the conditional candidate secondary cell group is executed to an error cell.

30. The apparatus of claim 27, wherein, The processor is configured to read a computer program in the memory and perform the following operations: receiving first information sent by a terminal; determining whether to configure the conditional handover with the conditional candidate secondary cell group according to the first information; The first information includes at least one of the following: time information satisfying a PCell execution condition and time information satisfying a PSCell execution condition of a secondary cell group; time information of PCell execution condition satisfaction, and information of whether PSCell execution condition is satisfied in the case of PCell execution condition satisfaction; time information of PSCell execution condition satisfaction, and information of whether PCell execution condition is satisfied in the case of PSCell execution condition satisfaction; measurement result when PCell execution condition is satisfied; measurement result when PSCell execution condition is satisfied; first identification information for indicating that PCell execution condition and PSCell execution condition are not satisfied at the same time; second identification information for indicating that the measurement result of PSCell is lower than a first value in the case of satisfying PCell execution condition; third identification information for indicating that the measurement result of PCell is lower than a second value in the case of satisfying PSCell execution condition; fourth identification information for indicating that there is no common coverage area between PCell switching area and PSCell switching area.

31. The apparatus of claim 30, wherein, The processor is configured to read a computer program in the memory and perform the following operations: determining not to configure the conditional handover with the conditional candidate secondary cell group in at least one of the following cases according to the first information: there is no overlapping area between PCell switching area and PSCell switching area; there is no overlap between the time satisfying PCell execution condition and the time satisfying PSCell execution condition; the coverage area cannot satisfy the execution condition of the conditional handover with the conditional candidate secondary cell group; the conditional handover with the conditional candidate secondary cell group cannot be configured; the configuration optimization of the conditional handover with the conditional candidate secondary cell group cannot be performed.

32. The apparatus of claim 30, wherein, The definition of the execution of the conditional handover with the conditional candidate secondary cell group being too late includes the following one: The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, and before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, the SCG failure occurs, and the suitable PSCell selected by the terminal based on the measurement is other PSCell different from the source PSCell; The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, and after the terminal accesses the source PSCell cell and stably camps for the first time, the SCG failure occurs, and the selected new PSCell is other PSCell different from the source PSCell; The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, and before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, the MCG RLF occurs, and the terminal re-establishes the connection in a cell different from the source PCell; The terminal receives the configuration information of the conditional handover with the conditional candidate secondary cell group, and before the execution condition of the conditional handover with the conditional candidate secondary cell group is met, the MCG RLF occurs after the terminal stably camps in the source cell for the second time, and the terminal re-establishes the connection in a cell different from the source cell.

33. The apparatus of claim 30, wherein, The definition of the execution of the conditional handover with the conditional candidate secondary cell group being too early includes the following at least one: In the case of executing the conditional handover with the conditional candidate secondary cell group, the conditional handover with the conditional candidate secondary cell group fails to execute, or the PSCell access fails, or the SCG failure occurs within a third time after the execution of the conditional handover with the conditional candidate secondary cell group succeeds, and the suitable PSCell selected by the terminal based on the measurement is the source PSCell; In the case of executing the conditional handover with the conditional candidate secondary cell group, the PCell access fails, or the MCG RLF occurs within a fourth time after the execution of the conditional handover with the conditional candidate secondary cell group succeeds, and the terminal re-establishes the connection in the source PCell.

34. The apparatus of claim 30, wherein, The definition of the execution of the conditional handover with the conditional candidate secondary cell group being too early includes the following at least one: In the case of executing the conditional handover with the conditional candidate secondary cell group, the conditional handover with the conditional candidate secondary cell group fails to execute, or the PSCell access fails, or the SCG failure occurs within a fifth time after the execution of the conditional handover with the conditional candidate secondary cell group succeeds, and the suitable PSCell selected by the terminal based on the measurement is other PSCell different from the source PSCell and different from the target PSCell; In the case of executing the conditional handover with the conditional candidate secondary cell group, the PCell access fails, or the MCG RLF occurs within a sixth time after the execution of the conditional handover with the conditional candidate secondary cell group succeeds, and the terminal re-establishes the connection in other PCell different from the source PCell and different from the target PCell.

35. An information processing device of conditional handover, comprising: The first sending unit is configured to send, to a network side device, failure information of the conditional handover of the candidate secondary cell group with conditions, and the failure information is used to determine a failure type of the conditional handover of the candidate secondary cell group with conditions. 36.An information processing apparatus of conditional handover, comprising: The first receiving unit is configured to receive, from a terminal, failure information of the conditional handover of the candidate secondary cell group with conditions; The first determining unit is configured to determine, according to the failure information, a failure type of the conditional handover of the candidate secondary cell group with conditions. 37.A processor readable storage medium, storing a program, the program being used to make the processor execute the information processing method of conditional handover according to any one of claims 1 to 10, or execute the information processing method of conditional handover according to any one of claims 11 to 17.

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