Switching methods, devices, electronic equipment, storage media and program products

Abstract

This application provides a handover method, apparatus, electronic device, storage medium, and program product. The method is applied to a terminal device and includes: receiving configuration information, the configuration information including handover execution conditions for each candidate cell in at least one conditional handover candidate cell, the handover execution conditions being related to the link margin of the serving cell and / or the conditional handover candidate cells of the terminal device; determining a target cell based on the configuration information, the at least one conditional handover candidate cell including the target cell, and the handover execution conditions of the target cell being met. The above method can improve handover timeliness.

Description

Technical Field

[0001] This application relates to the technical fields of terminals and communications, and in particular to a switching method, apparatus, electronic device, storage medium, and program product. Background Technology

[0002] Terminal devices can switch between different cells for connected mobility management.

[0003] Currently, before a terminal device can perform a handover operation, it needs a considerable amount of time to conduct neighbor cell searches and Radio Resource Management (RRM) measurements, resulting in poor handover timeliness. Summary of the Invention

[0004] This application provides a switching method, apparatus, electronic device, storage medium, and program product to solve the technical problem of poor switching timeliness.

[0005] In a first aspect, embodiments of this application provide a switching method applied to a first satellite, the method comprising:

[0006] Receive configuration information, the configuration information including handover execution conditions for each candidate cell in at least one conditional handover candidate cell, the handover execution conditions being related to the link margin of the serving cell and / or the conditional handover candidate cell of the terminal device;

[0007] Based on the configuration information, a target cell is determined, and the at least one conditional handover candidate cell includes the target cell, and the handover execution conditions of the target cell are met.

[0008] In one possible implementation, the switching execution condition includes a first trigger condition and / or a second trigger condition, wherein,

[0009] The first triggering condition is a switching triggering condition based on business experience;

[0010] The second triggering condition is a switching triggering condition based on link margin.

[0011] In one possible implementation, the switching execution condition includes a first triggering condition, which includes:

[0012] The link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the first margin threshold.

[0013] In one possible implementation, the configuration information further includes at least one of the following: the first margin threshold, the first hysteresis value, or the first trigger duration, wherein,

[0014] The first hysteresis value is a parameter used to determine whether the entry condition and / or exit condition of the first triggering condition are met;

[0015] The first trigger duration is the minimum duration during which the entry condition of the first trigger condition is met before the execution condition is switched.

[0016] In one possible implementation, the switching execution condition includes a second triggering condition, which includes at least one of the following:

[0017] The first link margin between the terminal device and the serving cell is less than or equal to the second margin threshold;

[0018] The second link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the third margin threshold.

[0019] The difference between the second link margin and the first link margin is greater than or equal to a preset offset, and the second link margin is greater than the first link margin;

[0020] The first link margin is less than or equal to the fourth margin threshold, and the second link margin is greater than or equal to the fifth margin threshold.

[0021] In one possible implementation, the configuration information further includes at least one of the following: a second margin threshold, a third margin threshold, a preset offset, a fourth margin threshold, a fifth margin threshold, a second hysteresis value, or a second trigger duration, wherein,

[0022] The second hysteresis value is a parameter used to determine whether the entry condition and / or exit condition of the second triggering condition are met;

[0023] The second trigger duration is the minimum duration during which the entry condition of the second trigger condition is met before the execution condition is switched.

[0024] In one possible implementation, the link margin includes uplink margin and / or downlink margin.

[0025] In one possible implementation, the configuration information further includes at least one of the following:

[0026] The identifiers of each candidate cell in the at least one conditional handover candidate cell;

[0027] The first configuration information of the serving cell;

[0028] The second configuration information of the candidate cells for conditional handover.

[0029] In one possible implementation, the first configuration information includes at least one of the following:

[0030] The effective isotropic radiated power (EIRP) of the serving cell;

[0031] The quality factor G / T of the receiving system of the serving cell.

[0032] In one possible implementation, the second configuration information includes at least one of the following:

[0033] The effective isotropic radiated power (EIRP) of the candidate cells for conditional handover;

[0034] The receiving system quality factor G / T of the candidate cell for conditional handover.

[0035] In one possible implementation, the switching execution condition further includes at least one of the following:

[0036] Triggering conditions based on measurement;

[0037] Distance-based triggering conditions; or,

[0038] Time-based triggering conditions.

[0039] In one possible implementation, determining the target cell based on the configuration information includes:

[0040] Based on the configuration information and at least one piece of information, determine the target cell from the at least one conditional handover candidate cells;

[0041] The at least one piece of information includes at least one of the following:

[0042] The location information of the terminal device;

[0043] Satellite ephemeris information of the service cell;

[0044] Satellite ephemeris information of the candidate cells for conditional handover;

[0045] The epoch time of the service cell;

[0046] The epoch time of the candidate cells for conditional handover;

[0047] The EIRP of the terminal device;

[0048] G / T of the terminal equipment;

[0049] The lowest elevation angle supported by the terminal device.

[0050] In one possible implementation, if the number of candidate cells for handover where the handover execution conditions are met is greater than one...

[0051] The target cell is the cell with the largest link margin among the candidate cells for handover where the handover execution conditions are met.

[0052] In one possible implementation, the method further includes:

[0053] Perform a handover operation to the target cell.

[0054] In one possible implementation, the method further includes:

[0055] Send a first message to the network device, the first message indicating at least one of the following:

[0056] The terminal device may or may not support conditional handover based on link margin.

[0057] The EIRP of the terminal device;

[0058] G / T of the terminal equipment;

[0059] The lowest elevation angle supported by the terminal device.

[0060] Secondly, embodiments of this application provide a switching method applied to a first network device, the method comprising:

[0061] Determine at least one conditional handover candidate cell corresponding to the terminal device, and obtain the handover execution conditions for each conditional handover candidate cell;

[0062] The terminal device is sent configuration information, which includes the handover execution conditions of each candidate cell in the at least one conditional handover candidate cell. The configuration information is used by the terminal device to determine the target cell in the at least one conditional handover candidate cell.

[0063] In one possible implementation, determining at least one conditional handover candidate cell corresponding to the terminal device includes:

[0064] At least one conditional handover candidate cell corresponding to the terminal device is determined if at least one of the following conditions is met:

[0065] The load of the serving cell of the terminal device is greater than or equal to the preset load;

[0066] The terminal device has a first service flow, the priority of the first service flow is greater than or equal to a preset priority, and the service quality of the first service flow in the conditional handover candidate cell is greater than the service quality of the first service flow in the serving cell.

[0067] The satellite orbit where the service cell is located has a coverage gap, and the area corresponding to the coverage gap is to be covered by the terminal device.

[0068] In one possible implementation, obtaining the handover execution conditions of the candidate cells includes:

[0069] Send a handover request message to the second network device corresponding to the candidate cell for handover under the condition;

[0070] The system receives a handover confirmation message from the second network device, the handover confirmation message including the handover execution conditions.

[0071] In one possible implementation, the switching request message includes at least one of the following:

[0072] At least one of the first pieces of information, wherein the first pieces of information are sent by the terminal device to the first network device;

[0073] The location of the terminal device.

[0074] In one possible implementation, the first information is used to indicate at least one of the following:

[0075] The terminal device may or may not support conditional handover based on link margin.

[0076] The EIRP of the terminal device;

[0077] G / T of the terminal equipment;

[0078] The lowest elevation angle supported by the terminal device.

[0079] In one possible implementation, the method further includes:

[0080] Receive the first information sent by the terminal device.

[0081] In one possible implementation, the switching execution condition includes a first trigger condition and a second trigger condition, wherein,

[0082] The first triggering condition is a switching triggering condition based on business experience;

[0083] The second triggering condition is a switching triggering condition based on link margin.

[0084] In one possible implementation, the switching execution condition includes a first triggering condition, which includes:

[0085] The link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the first margin threshold.

[0086] In one possible implementation, the configuration information further includes at least one of the following: the first margin threshold, the first hysteresis value, or the first trigger time, wherein,

[0087] The first hysteresis value is a threshold used to determine whether the entry condition and / or exit condition of the first triggering condition are met;

[0088] The first trigger duration is the minimum duration during which the entry condition of the first trigger condition is met before the execution condition is switched.

[0089] In one possible implementation, the switching execution condition includes a second triggering condition, the second trigger including at least one of the following:

[0090] The first link margin between the terminal device and the serving cell is less than or equal to the second margin threshold;

[0091] The second link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the third margin threshold.

[0092] The difference between the second link margin and the first link margin is greater than or equal to a preset offset, and the second link margin is greater than the first link margin;

[0093] The first link margin is less than or equal to the fourth margin threshold, and the second link margin is greater than or equal to the fifth margin threshold.

[0094] In one possible implementation, the configuration information further includes at least one of the following: a second margin threshold, a third margin threshold, a preset offset, a fourth margin threshold, a fifth margin threshold, a second hysteresis value, or a second trigger duration, wherein,

[0095] The second hysteresis value is a threshold used to determine whether the entry condition and / or exit condition of the second triggering condition are met;

[0096] The second trigger duration is the minimum duration during which the entry condition of the second trigger condition is met before the execution condition is switched.

[0097] In one possible implementation, the link margin includes uplink margin and / or downlink margin.

[0098] In one possible implementation, the configuration information further includes at least one of the following:

[0099] The identifiers of each candidate cell in the at least one conditional handover candidate cell;

[0100] The first configuration information of the serving cell;

[0101] The second configuration information of the candidate cells for conditional handover.

[0102] In one possible implementation, the first configuration information includes at least one of the following:

[0103] The effective isotropic radiated power (EIRP) of the serving cell;

[0104] The quality factor G / T of the receiving system of the serving cell.

[0105] In one possible implementation, the second configuration information includes at least one of the following:

[0106] The effective isotropic radiated power (EIRP) of the candidate cells for conditional handover;

[0107] The receiving system quality factor G / T of the candidate cell for conditional handover.

[0108] In one possible implementation, the method further includes:

[0109] Receive second information from the second network device, the second information including the EIRP and / or G / T of the cell corresponding to the second network device.

[0110] In one possible implementation, the method further includes:

[0111] A first request message is sent to the second network device, the first request message being used to request the acquisition of the second information.

[0112] In one possible implementation, the method further includes:

[0113] Send third information to a second network device, the second network device being the network device corresponding to the conditional handover candidate cell, the third information including the EIRP and / or G / T of the cell corresponding to the first network device.

[0114] In one possible implementation, the method further includes:

[0115] The system receives a second request message sent by the second network device, the second request message being used to request the acquisition of the third information.

[0116] Thirdly, embodiments of this application provide a switching method applied to a second network device, the method comprising:

[0117] The terminal device receives a handover request message sent by the first network device, the handover request message being used to request the terminal device to be handed over to the cell corresponding to the second network device;

[0118] According to the handover request message, a handover confirmation message is sent to the first network device, and the handover confirmation message includes the handover execution conditions of the conditional handover candidate cell corresponding to the second network device.

[0119] In one possible implementation, the switching request message includes at least one of the following:

[0120] At least one of the first pieces of information, wherein the first pieces of information are sent by the terminal device to the first network device;

[0121] The location of the terminal device.

[0122] In one possible implementation, the first information is used to indicate at least one of the following:

[0123] The terminal device may or may not support conditional handover based on link margin.

[0124] The EIRP of the terminal device;

[0125] G / T of the terminal equipment;

[0126] The lowest elevation angle supported by the terminal device.

[0127] In one possible implementation, the method further includes:

[0128] Send second information to the first network device, the second information including the EIRP and / or G / T of the cell corresponding to the second network device.

[0129] In one possible implementation, the method further includes:

[0130] The system receives a first request message sent by the first network device, the first request message being used to request the acquisition of the second information.

[0131] In one possible implementation, the method further includes:

[0132] The system receives third information sent by the first network device, the third information including the EIRP and / or G / T of the cell corresponding to the first network device.

[0133] In one possible implementation, the method further includes:

[0134] A second request message is sent to the first network device, the second request message being used to request the acquisition of the third information.

[0135] Fourthly, embodiments of this application provide a switching device applied to a terminal device, the switching device comprising a receiving module and a determining module, wherein...

[0136] The receiving module is specifically used to receive configuration information, which includes handover execution conditions for each candidate cell in at least one conditional handover candidate cell. The handover execution conditions are related to the link margin of the serving cell and / or the conditional handover candidate cell of the terminal device.

[0137] The determining module is specifically used to determine a target cell based on the configuration information, wherein the at least one conditional handover candidate cell includes the target cell, and the handover execution conditions of the target cell are met.

[0138] In one possible implementation, the switching execution condition includes a first trigger condition and / or a second trigger condition, wherein,

[0139] The first triggering condition is a switching triggering condition based on business experience;

[0140] The second triggering condition is a switching triggering condition based on link margin.

[0141] In one possible implementation, the switching execution condition includes a first triggering condition, which includes:

[0142] The link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the first margin threshold.

[0143] In one possible implementation, the configuration information further includes at least one of the following: the first margin threshold, the first hysteresis value, or the first trigger duration, wherein,

[0144] The first hysteresis value is a parameter used to determine whether the entry condition and / or exit condition of the first triggering condition are met;

[0145] The first trigger duration is the minimum duration during which the entry condition of the first trigger condition is met before the execution condition is switched.

[0146] In one possible implementation, the switching execution condition includes a second triggering condition, which includes at least one of the following:

[0147] The first link margin between the terminal device and the serving cell is less than or equal to the second margin threshold;

[0148] The second link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the third margin threshold.

[0149] The difference between the second link margin and the first link margin is greater than or equal to a preset offset, and the second link margin is greater than the first link margin;

[0150] The first link margin is less than or equal to the fourth margin threshold, and the second link margin is greater than or equal to the fifth margin threshold.

[0151] In one possible implementation, the configuration information further includes at least one of the following: a second margin threshold, a third margin threshold, a preset offset, a fourth margin threshold, a fifth margin threshold, a second hysteresis value, or a second trigger duration, wherein,

[0152] The second hysteresis value is a parameter used to determine whether the entry condition and / or exit condition of the second triggering condition are met;

[0153] The second trigger duration is the minimum duration during which the entry condition of the second trigger condition is met before the execution condition is switched.

[0154] In one possible implementation, the link margin includes uplink margin and / or downlink margin.

[0155] In one possible implementation, the configuration information further includes at least one of the following:

[0156] The identifiers of each candidate cell in the at least one conditional handover candidate cell;

[0157] The first configuration information of the serving cell;

[0158] The second configuration information of the candidate cells for conditional handover.

[0159] In one possible implementation, the first configuration information includes at least one of the following:

[0160] The effective isotropic radiated power (EIRP) of the serving cell;

[0161] The quality factor G / T of the receiving system of the serving cell.

[0162] In one possible implementation, the second configuration information includes at least one of the following:

[0163] The effective isotropic radiated power (EIRP) of the candidate cells for conditional handover;

[0164] The receiving system quality factor G / T of the candidate cell for conditional handover.

[0165] In one possible implementation, the switching execution condition further includes at least one of the following:

[0166] Triggering conditions based on measurement;

[0167] Distance-based triggering conditions; or,

[0168] Time-based triggering conditions.

[0169] In one possible implementation, the determining module is specifically used for,

[0170] Based on the configuration information and at least one piece of information, determine the target cell from the at least one conditional handover candidate cells;

[0171] The at least one piece of information includes at least one of the following:

[0172] The location information of the terminal device;

[0173] Satellite ephemeris information of the service cell;

[0174] Satellite ephemeris information of the candidate cells for conditional handover;

[0175] The epoch time of the service cell;

[0176] The epoch time of the candidate cells for conditional handover;

[0177] The EIRP of the terminal device;

[0178] G / T of the terminal equipment;

[0179] The lowest elevation angle supported by the terminal device.

[0180] In one possible implementation, if the number of candidate cells for handover where the handover execution conditions are met is greater than one...

[0181] The target cell is the cell with the largest link margin among the candidate cells for handover where the handover execution conditions are met.

[0182] In one possible implementation, the switching device further includes an execution module and a sending module, wherein,

[0183] The execution module is used to perform a handover operation to the target cell.

[0184] In one possible implementation, the sending module is used to,

[0185] Send a first message to the network device, the first message indicating at least one of the following:

[0186] The terminal device may or may not support conditional handover based on link margin.

[0187] The EIRP of the terminal device;

[0188] G / T of the terminal equipment;

[0189] The lowest elevation angle supported by the terminal device.

[0190] Fifthly, embodiments of this application provide a switching device applied to a first network device, the switching device comprising a determining module, an acquiring module, and a sending module, wherein...

[0191] The determining module is used to determine at least one conditional handover candidate cell corresponding to the terminal device.

[0192] The acquisition module is used to acquire the handover execution conditions of each candidate cell for handover.

[0193] The sending module is used to send configuration information to the terminal device. The configuration information includes the handover execution conditions of each candidate cell in the at least one conditional handover candidate cell. The configuration information is used by the terminal device to determine the target cell in the at least one conditional handover candidate cell.

[0194] In one possible implementation, the determining module is specifically used for,

[0195] At least one conditional handover candidate cell corresponding to the terminal device is determined if at least one of the following conditions is met:

[0196] The load of the serving cell of the terminal device is greater than or equal to the preset load;

[0197] The terminal device has a first service flow, the priority of the first service flow is greater than or equal to a preset priority, and the service quality of the first service flow in the conditional handover candidate cell is greater than the service quality of the first service flow in the serving cell.

[0198] The satellite orbit where the service cell is located has a coverage gap, and the area corresponding to the coverage gap is to be covered by the terminal device.

[0199] In one possible implementation, the acquisition module is specifically used for,

[0200] Send a handover request message to the second network device corresponding to the candidate cell for handover under the condition;

[0201] The system receives a handover confirmation message from the second network device, the handover confirmation message including the handover execution conditions.

[0202] In one possible implementation, the switching request message includes at least one of the following:

[0203] At least one of the first pieces of information, wherein the first pieces of information are sent by the terminal device to the first network device;

[0204] The location of the terminal device.

[0205] In one possible implementation, the first information is used to indicate at least one of the following:

[0206] The terminal device may or may not support conditional handover based on link margin.

[0207] The EIRP of the terminal device;

[0208] G / T of the terminal equipment;

[0209] The lowest elevation angle supported by the terminal device.

[0210] In one possible implementation, the acquisition module is further used to,

[0211] Receive the first information sent by the terminal device.

[0212] In one possible implementation, the switching execution condition includes a first trigger condition and a second trigger condition.

[0213] in,

[0214] The first triggering condition is a switching triggering condition based on business experience;

[0215] The second triggering condition is a switching triggering condition based on link margin.

[0216] In one possible implementation, the switching execution condition includes a first triggering condition, which includes:

[0217] The link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the first margin threshold.

[0218] In one possible implementation, the configuration information further includes at least one of the following: the first margin threshold, the first hysteresis value, or the first trigger time, wherein,

[0219] The first hysteresis value is a threshold used to determine whether the entry condition and / or exit condition of the first triggering condition are met;

[0220] The first trigger duration is the minimum duration during which the entry condition of the first trigger condition is met before the execution condition is switched.

[0221] In one possible implementation, the switching execution condition includes a second triggering condition, the second trigger including at least one of the following:

[0222] The first link margin between the terminal device and the serving cell is less than or equal to the second margin threshold;

[0223] The second link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the third margin threshold.

[0224] The difference between the second link margin and the first link margin is greater than or equal to a preset offset, and the second link margin is greater than the first link margin;

[0225] The first link margin is less than or equal to the fourth margin threshold, and the second link margin is greater than or equal to the fifth margin threshold.

[0226] In one possible implementation, the configuration information further includes at least one of the following: a second margin threshold, a third margin threshold, a preset offset, a fourth margin threshold, a fifth margin threshold, a second hysteresis value, or a second trigger duration, wherein,

[0227] The second hysteresis value is a threshold used to determine whether the entry condition and / or exit condition of the second triggering condition are met;

[0228] The second trigger duration is the minimum duration during which the entry condition of the second trigger condition is met before the execution condition is switched.

[0229] In one possible implementation, the link margin includes uplink margin and / or downlink margin.

[0230] In one possible implementation, the configuration information further includes at least one of the following:

[0231] The identifiers of each candidate cell in the at least one conditional handover candidate cell;

[0232] The first configuration information of the serving cell;

[0233] The second configuration information of the candidate cells for conditional handover.

[0234] In one possible implementation, the first configuration information includes at least one of the following:

[0235] The effective isotropic radiated power (EIRP) of the serving cell;

[0236] The quality factor G / T of the receiving system of the serving cell.

[0237] In one possible implementation, the second configuration information includes at least one of the following:

[0238] The effective isotropic radiated power (EIRP) of the candidate cells for conditional handover;

[0239] The receiving system quality factor G / T of the candidate cell for conditional handover.

[0240] In one possible implementation, the acquisition module is further used to,

[0241] Receive second information from the second network device, the second information including the EIRP and / or G / T of the cell corresponding to the second network device.

[0242] In one possible implementation, the sending module is further configured to,

[0243] A first request message is sent to the second network device, the first request message being used to request the acquisition of the second information.

[0244] In one possible implementation, the sending module is further configured to,

[0245] Send third information to a second network device, the second network device being the network device corresponding to the conditional handover candidate cell, the third information including the EIRP and / or G / T of the cell corresponding to the first network device.

[0246] In one possible implementation, the acquisition module is further used to,

[0247] The system receives a second request message sent by the second network device, the second request message being used to request the acquisition of the third information.

[0248] Sixthly, embodiments of this application provide a switching device applied to a second network device, the switching device comprising a receiving module and a transmitting module, wherein...

[0249] The receiving module is used to receive a handover request message sent by the first network device, the handover request message being used to request the terminal device to be handed over to the cell corresponding to the second network device;

[0250] The sending module is used to send a handover confirmation message to the first network device according to the handover request message. The handover confirmation message includes the handover execution conditions of the conditional handover candidate cell corresponding to the second network device.

[0251] In one possible implementation, the switching request message includes at least one of the following:

[0252] At least one of the first pieces of information, wherein the first pieces of information are sent by the terminal device to the first network device;

[0253] The location of the terminal device.

[0254] In one possible implementation, the first information is used to indicate at least one of the following:

[0255] The terminal device may or may not support conditional handover based on link margin.

[0256] The EIRP of the terminal device;

[0257] G / T of the terminal equipment;

[0258] The lowest elevation angle supported by the terminal device.

[0259] In one possible implementation, the sending module is further configured to,

[0260] Send second information to the first network device, the second information including the EIRP and / or G / T of the cell corresponding to the second network device.

[0261] In one possible implementation, the receiving module is further configured to,

[0262] The system receives a first request message sent by the first network device, the first request message being used to request the acquisition of the second information.

[0263] In one possible implementation, the receiving module is further configured to,

[0264] The system receives third information sent by the first network device, the third information including the EIRP and / or G / T of the cell corresponding to the first network device.

[0265] In one possible implementation, the sending module is further configured to,

[0266] A second request message is sent to the first network device, the second request message being used to request the acquisition of the third information.

[0267] In a seventh aspect, embodiments of this application provide an electronic device, including: a memory and a processor;

[0268] The memory stores computer-executed instructions;

[0269] The processor executes computer execution instructions stored in the memory, causing the processor to perform the first aspect and / or various possible implementations of the first aspect as described above.

[0270] Eighthly, embodiments of this application provide an electronic device, including: a memory and a processor;

[0271] The memory stores computer-executed instructions;

[0272] The processor executes computer execution instructions stored in the memory, causing the processor to perform the second aspect and / or various possible implementations of the second aspect as described above.

[0273] Ninthly, embodiments of this application provide an electronic device, including: a memory and a processor;

[0274] The memory stores computer-executed instructions;

[0275] The processor executes computer execution instructions stored in the memory, causing the processor to perform the third aspect and / or various possible implementations of the third aspect as described above.

[0276] In a tenth aspect, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the first aspect and / or various possible implementations of the first aspect.

[0277] Eleventhly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the second aspect and / or various possible implementations of the second aspect as described above.

[0278] In a twelfth aspect, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the third aspect and / or various possible implementations of the third aspect.

[0279] In a thirteenth aspect, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the first aspect and / or various possible implementations of the first aspect.

[0280] In a fourteenth aspect, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the second aspect and / or various possible implementations of the second aspect as described above.

[0281] In a fifteenth aspect, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the third aspect and / or various possible implementations of the third aspect as described above.

[0282] The handover method, apparatus, electronic device, storage medium, and program product provided in this application embodiment allow the terminal device to receive configuration information and determine the target cell based on the configuration information. In the above method, the terminal device does not need to perform neighbor cell measurements, resulting in a shorter handover process and improved handover timeliness. Attached Figure Description

[0283] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0284] Figure 1 This is a schematic diagram of an application scenario provided by an embodiment of this application;

[0285] Figure 2 A flowchart illustrating a switching method provided in an embodiment of this application;

[0286] Figure 3 A flowchart illustrating another switching method provided in an embodiment of this application;

[0287] Figure 4 A flowchart illustrating yet another switching method provided in an embodiment of this application;

[0288] Figure 5 A flowchart illustrating yet another switching method provided in an embodiment of this application;

[0289] Figure 6 A flowchart illustrating yet another switching method provided in an embodiment of this application;

[0290] Figure 7 A flowchart illustrating yet another switching method provided in an embodiment of this application;

[0291] Figure 8 A flowchart illustrating yet another switching method provided in an embodiment of this application;

[0292] Figure 9 This is a schematic diagram of the structure of a switching device provided in an embodiment of this application;

[0293] Figure 10 This is a schematic diagram of another switching device provided in an embodiment of this application;

[0294] Figure 11 This is a schematic diagram of another switching device provided in an embodiment of this application;

[0295] Figure 12 This is a schematic diagram of another switching device provided in an embodiment of this application;

[0296] Figure 13 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0297] These accompanying drawings and textual descriptions are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0298] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0299] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0300] To facilitate understanding, the technical terms involved in the embodiments of this application will be explained first.

[0301] (1) Non-Terrestrial Network (NTN): refers to a network system that uses non-terrestrial infrastructure such as satellites, drones, and high-altitude balloons in space to provide communication services.

[0302] NTN provides non-terrestrial New Radio (NR) access to terminal equipment through NTN payloads and NTN gateways. The link between the NTN payload and the terminal equipment is a service link, while the link between the NTN payload and the NTN gateway is a feeder link.

[0303] NTN includes Low Earth Orbiting (LEO) satellites, Medium Earth Orbiting (MEO) satellites, Geosynchronous Orbit (GSO) satellites, and High Altitude Platform Systems (HAPS).

[0304] In the NTN system, there are three types of cells:

[0305] Earth-fixed cells: provided by beams that continuously cover the same geographic area. For example, provided by GSO satellites.

[0306] Quasi-Earth-fixed cells: These are provided by beams that cover one geographic area for a limited period and a different geographic area for another period. (For example, this is achieved by steerable beams generated by non-Geosynchronous Orbit (NGSO) satellites.)

[0307] Earth-moving cells: provided by beams that slide across the Earth's surface over their coverage area. (For example, achieved by fixed or non-steerable beams generated by NSGO satellites).

[0308] (2) Conditional Handover (CHO): This refers to the process by which a terminal device switches from one base station to another when one or more handover execution conditions are met. When the terminal device receives the CHO configuration, it begins to evaluate the execution conditions, determines the candidate cell that meets the execution conditions as the target cell for handover, and stops evaluating the execution conditions after the handover is performed.

[0309] (3) Execution conditions for condition switching:

[0310] The execution conditions for conditional handover currently supported by the 3rd Generation Partnership Project (3GPP) standard protocol include:

[0311] Conditional Event (CondEvent) A3: The signal measurement result of the candidate cell for conditional handover is better than that of the source cell by the offset;

[0312] Conditional Event (CondEvent) A4: The signal measurement result of the candidate cell for conditional handover is better than a certain threshold;

[0313] Conditional Event (CondEvent) A5: The signal measurement result of the source cell is worse than a certain threshold, and the signal measurement result of the candidate cell for conditional handover is better than a certain threshold;

[0314] Conditional Event (CondEvent) D1: The distance between the terminal device and the reference location of the serving cell is greater than a certain distance threshold, and the distance between the terminal device and the candidate cell for conditional handover is less than a certain distance threshold. This condition applies to quasi-ground stationary cells. The reference location of the serving cell and the reference location of the candidate cell are directly configured by the network.

[0315] Conditional Event (CondEvent) D2: The distance between the terminal device and the reference location of the serving cell is greater than a certain distance threshold, and the distance between the terminal and the candidate cell for conditional handover is less than a certain distance threshold. This condition applies to ground-to-mobile cells. The reference location of the serving cell and the reference location of the candidate cell are calculated by the terminal based on ephemeris information.

[0316] Conditional event (CondEvent) T1: The time is within the time interval, the start of the time interval is t1-Threshold, and the end of the time interval is t1-Threshold+duration.

[0317] (4) Terminal Device: This refers to a device with wireless transceiver capabilities that can cooperate with network-side equipment to provide communication services to users. Terminal devices can also be called terminals, user equipment (UE), user terminals, mobile terminals (MT), or user agents, etc. For example, terminal devices can be mobile phones, tablets, laptops, wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, vehicle-mounted devices, or shipboard devices, etc.

[0318] (5) Network equipment: refers to network-side equipment capable of communicating with terminal equipment. Network equipment may also be called space base station, satellite-borne base station, satellite, satellite communication node, satellite network terminal equipment, satellite communication module, or base station, etc. This network-side equipment may also be called access network equipment or wireless access network equipment. Network-side equipment can be a base station (BTS) in a satellite-borne Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA) communication system, a base station (NodeB, NB) in a satellite-borne Wideband Code Division Multiple Access (WCDMA) system, an evolved base station (eNB or eNodeB) in a satellite-borne LTE system, a base station (gNB) in a satellite-borne 5G network, a base station in a future network (e.g., 6G network) after 5G, a base station in a future evolved Public Land Mobile Network (PLMN) network, a transmission reception point (TRP) in a satellite-borne transmission reception point (TRP), a radio controller in a cloud radio access network (CRAN) scenario, or a city base station, micro base station, pico base station, or femtobase station, etc., carried by satellite. Base stations can also be ground-based base stations capable of communicating with satellites.

[0319] To facilitate understanding, the application scenarios involved in the embodiments of this application are described below.

[0320] Figure 1 This is a schematic diagram illustrating an application scenario provided by an embodiment of this application. Please refer to [link / reference]. Figure 1 The terminal device can communicate with network device 1. Network device 1 can be a satellite or a ground base station capable of communicating with a satellite. When the location of the terminal device, network device 1, or the satellite connected to network device 1 changes, the terminal device can switch from network device 1 to network device 2 and communicate with network device 2. Network device 2 can also be a satellite or a ground base station capable of communicating with a satellite.

[0321] It should be noted that the terminal device can switch between network device 1 and network device 2. Figure 1 The example provided is only for switching a terminal device from network device 1 to network device 2 and does not constitute a limitation on the technical solutions provided in the embodiments of this application.

[0322] Currently, before a terminal device switches from network device 1 to network device 2, it needs to perform neighbor cell search and RRM measurement. During the neighbor cell search and RRM measurement process, the terminal device needs to measure the Synchronization Signal Block (SSB) beam and Channel State Information Reference Signal (CSI-RS) beam of the cell corresponding to network device 2. In other words, the terminal device needs to measure the SSB beam and CSI-RS beam of the satellite cell.

[0323] The process of measuring the SSB beam and CSI-RS beam of a satellite cell by the terminal equipment is explained below.

[0324] The SSB and CSI-RS beams of a satellite cell typically scan various locations within the network in a time-division multiplexing manner. The time required for the SSB and CSI-RS beams to scan each location within the network is one cycle. Terminal equipment generally needs to continuously measure for one or more cycles to complete the measurement of the SSB and CSI-RS beams of the satellite cell.

[0325] However, due to the long communication distance of satellite communication, narrower SSB and CSI-RS beams are typically used to allow the SSB and CSI-RS beams of a satellite cell to scan a wider area. This results in a longer scanning period for the SSB and CSI-RS beams of a satellite cell. Consequently, it takes a considerable amount of time for terminal equipment to measure the SSB and CSI-RS beams of a satellite cell, leading to poor handover timeliness.

[0326] Furthermore, if the terminal device uses an analog phased array antenna or a parabolic antenna, the terminal device needs to perform neighbor cell searches and measurements separately for each candidate direction. This requires a longer measurement time, further exacerbating the untimely handover.

[0327] In view of this, embodiments of this application provide a handover method in which the terminal device does not need to measure the SSB beam and CSI-RS beam of the satellite cell, which reduces the handover time and improves the timeliness of the handover.

[0328] Furthermore, in the switching method provided in this application embodiment, the terminal device does not need to perform RRM measurement or be configured with a measurement gap (GAP) that requires terminal services. In this way, the terminal device does not need to interrupt services due to RRM measurement, resulting in a better user experience.

[0329] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0330] Figure 2 This is a flowchart illustrating a switching method provided in an embodiment of this application. The executing entity of this method can be a terminal device or a switching device installed within the terminal device. The switching device can be implemented through software or a combination of software and hardware. For ease of understanding, the example of an executing entity being a terminal device will be used for explanation. Figure 2 As shown, the method may include:

[0331] S201, Receive configuration information.

[0332] The configuration information includes the handover execution conditions for each candidate cell in at least one conditional handover candidate cell. The handover execution conditions are related to the link margin of the serving cell and / or the conditional handover candidate cell of the terminal device.

[0333] In some embodiments, the terminal device may receive configuration information sent by the first network device. The first network device may be a network device currently providing wireless communication services to the terminal device. For example, the first network device may be a satellite base station.

[0334] The terminal device can be the terminal device for which the condition switching is to be performed.

[0335] The serving cell for a terminal device can be the cell that currently provides wireless communication services to the terminal device.

[0336] The handover candidate cells can be cells provided by the first network device to the terminal device, which the terminal device can select to handover to. The number of handover candidate cells can be one or more, and more than two can be selected.

[0337] In some embodiments, the configuration information may be dedicated signaling. Optionally, the dedicated signaling may be Radio Resource Control (RRC) reconfiguration messages, etc.

[0338] In some embodiments, the configuration information may be broadcast signaling. Optionally, the broadcast signaling may be system messages, etc.

[0339] In some embodiments, the switching execution condition can be a first triggering condition or a second triggering condition.

[0340] For any conditional handover candidate cell, the handover execution conditions for the conditional handover candidate cell may include a first triggering condition and / or a second triggering condition. Specifically,

[0341] In some embodiments, the handover execution conditions for a conditional handover candidate cell include a first triggering condition;

[0342] In some embodiments, the handover execution conditions for a conditional handover candidate cell include a second triggering condition;

[0343] In some embodiments, the handover execution conditions for a conditional handover candidate cell include a first triggering condition and a second triggering condition.

[0344] In some embodiments, the first triggering condition is a switching triggering condition based on business experience.

[0345] In some embodiments, the first triggering condition is: the link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the first margin threshold.

[0346] In some embodiments, the configuration information further includes at least one of the following: a first margin threshold, a first hysteresis value, or a first trigger duration (timeToTrigger), wherein the first hysteresis value is a parameter used to determine whether the entry condition and / or exit condition of the first trigger condition is met; and the first trigger duration is the minimum duration during which the entry condition of the first trigger condition is met before the execution condition is switched.

[0347] Specifically, if the difference between the link margin of the terminal device and the candidate cell for conditional handover minus the first hysteresis value is greater than or equal to the first margin threshold, the terminal device can confirm that the entry condition of the first triggering condition has been met. If the duration for which the entry condition of the first triggering condition is met is greater than or equal to the first trigger duration, the terminal device can determine that the first triggering condition has been met, and thus can perform conditional handover according to the first triggering condition.

[0348] Furthermore, if the sum of the link margin between the terminal device and the candidate cell for conditional handover and the first hysteresis value is less than the first margin threshold, the terminal device can confirm that the departure condition of the first triggering condition has been met.

[0349] In some embodiments, the second triggering condition is a handover triggering condition based on link margin.

[0350] In some embodiments, the second triggering condition includes at least one of the following: the first link margin between the terminal device and the serving cell is less than or equal to a second margin threshold; the second link margin between the terminal device and the conditional handover candidate cell is greater than or equal to a third margin threshold; the difference between the second link margin and the first link margin is greater than or equal to a preset offset, and the second link margin is greater than the first link margin; the first link margin is less than or equal to a fourth margin threshold, and the second link margin is greater than or equal to a fifth margin threshold.

[0351] In some embodiments, the configuration information further includes at least one of the following: a second margin threshold, a third margin threshold, a preset offset, a fourth margin threshold, a fifth margin threshold, a second hysteresis value, or a second trigger duration, wherein the second hysteresis value is a parameter used to determine whether the entry condition and / or exit condition of the second trigger condition is met; and the second trigger duration is the minimum duration during which the entry condition of the second trigger condition is met before the execution condition is switched.

[0352] It should be noted that, for any second triggering condition, the method by which the terminal device determines whether it can perform a conditional handover is the same or similar. Below, we will explain the method for determining whether the terminal device can perform a conditional handover based on the second triggering condition: the first link margin between the terminal device and the serving cell is less than or equal to the second margin threshold.

[0353] Assume the second triggering condition is: the first link margin between the terminal device and the serving cell is less than or equal to a second margin threshold. If the difference between the first link margin between the terminal device and the serving cell and the second hysteresis value is greater than or equal to the second margin threshold, the terminal device can confirm that the entry condition for the second triggering condition has been met. If the duration for which the entry condition for the second triggering condition is met is greater than or equal to the second trigger duration, the terminal device can determine that the second triggering condition has been met, and thus can perform conditional handover based on the second triggering condition.

[0354] Furthermore, if the sum of the first link margin and the second hysteresis value between the terminal device and the serving cell is less than the second margin threshold, the terminal device can confirm that the departure condition of the second trigger condition has been met.

[0355] It should be noted that if the handover execution conditions of a candidate cell include a first triggering condition and a second triggering condition, then the terminal device can determine that the handover execution conditions of the candidate cell are met if it determines that a conditional handover can be performed according to both the first and second triggering conditions. In other words, if both the first and second triggering conditions are met, it can be determined that the handover execution conditions of the candidate cell are met.

[0356] In some embodiments, the switching execution condition further includes at least one of the following: a measurement-based triggering condition; a distance-based triggering condition; or a time-based triggering condition.

[0357] It should be noted that for explanations of measurement-based, distance-based, and time-based triggering conditions, please refer to relevant technologies, which will not be elaborated here.

[0358] It should be noted that if the handover execution conditions of a candidate cell include multiple triggering conditions, the terminal device can determine that the handover execution conditions of the candidate cell are met if it determines that a conditional handover can be performed according to each triggering condition. In other words, if each triggering condition is met, it can be determined that the handover execution conditions of the candidate cell are met.

[0359] S202. Determine the target cell based on the configuration information.

[0360] The target cell can be the cell to which the terminal device is to be handed over.

[0361] In some embodiments, the configuration information may further include at least one of the following: the identifier of each candidate cell in at least one conditional handover candidate cell; first configuration information of the serving cell; and second configuration information of the conditional handover candidate cell.

[0362] For any candidate cell for conditional handover, the identifier of the candidate cell includes, but is not limited to, the candidate cell identifier (ID), the candidate cell global identity (CGI), or the candidate cell physical cell identity (PCI).

[0363] In some embodiments, the first configuration information includes at least one of the following: the effective isotropic radiated power (EIRP) of the serving cell; and the gain-to-noise temperature ratio (G / T) of the serving cell.

[0364] In some embodiments, the second configuration information includes at least one of the following: the EIRP of the handover candidate cell; and the G / T of the handover candidate cell.

[0365] In some embodiments, the terminal device can determine the target cell from at least one conditional handover candidate cell based on configuration information and at least one piece of information. The at least one piece of information includes at least one of the following: the terminal device's location information; the serving cell's satellite ephemeris information; the conditional handover candidate cell's satellite ephemeris information; the serving cell's epoch time; the conditional handover candidate cell's epoch time; the terminal device's EIRP; the terminal device's G / T; and the minimum elevation angle supported by the terminal device.

[0366] Specifically, the terminal device can determine whether the handover execution conditions of each candidate cell are met based on the configuration information and at least one piece of information, and can determine the target cell among the cells where the handover execution conditions are met.

[0367] It should be noted that for any given conditional handover candidate cell, if a conditional handover can be executed based on each trigger condition of the candidate cell, then the handover execution condition for the candidate cell is satisfied. In other words, if each trigger condition of the candidate cell is satisfied, then the handover execution condition for the candidate cell is satisfied.

[0368] It should be noted that the method by which the terminal device determines whether a handover can be performed based on any trigger condition for any candidate cell is similar. Below, we will use the first trigger condition of any candidate cell as an example to explain the method by which the terminal device determines whether a handover can be performed based on the first trigger condition.

[0369] When determining whether a conditional handover can be performed based on the first trigger condition, the terminal device can first determine the link margin between the terminal device and the candidate cell for conditional handover. If the difference between the link margin between the terminal device and the candidate cell for conditional handover and the first hysteresis value is greater than or equal to the first margin threshold, the terminal device can confirm that the entry condition of the first trigger condition has been met. Furthermore, if the duration for which the entry condition of the first trigger condition is met is greater than or equal to the first trigger duration, the terminal device determines that a conditional handover can be performed based on the first trigger condition.

[0370] In some embodiments, link margin includes uplink margin and / or downlink margin.

[0371] In some embodiments, the terminal device can determine the link margin between the terminal device and the candidate cell for conditional handover using the following formula:

[0372] Link margin = EIRP at the transmitter per unit frequency domain resource - path loss - other losses + G / T at the receiver - Boltzmann constant - desired signal-to-interference-to-noise ratio

[0373] The terminal device can determine the location information of the conditional handover candidate cell based on its satellite ephemeris information, determine the transmission distance based on its own location information and the location information of the candidate cell, and determine the path loss based on the transmission distance and transmission frequency. For example, the terminal device can determine the path loss based on the transmission distance and transmission frequency using its own space propagation model. Other losses are related to shadow fading, atmospheric fading, rain and dew fading, and flicker, and can be network-configured (e.g., through system information configuration or dedicated signaling configuration) or preset loss values. The desired signal-to-interference-plus-noise ratio (SNR) can be a network-configured or preset value. If the desired SNR is a network-configured value, for example, it can be a configuration parameter of the conditional handover candidate cell. The terminal device can obtain the desired SNR of the conditional handover candidate cell from the first network device.

[0374] It should be noted that in the uplink: the EIRP of the transmitter per unit frequency domain resource can be either the EIRP of the terminal device or the G / T of the receiver; the G / T of the receiver can be either the G / T of the corresponding cell. In the downlink: the EIRP of the transmitter per unit frequency domain resource can be either the EIRP of the corresponding cell; the G / T of the receiver can be either the G / T of the terminal device. The corresponding cell can be either a conditional handover candidate cell or the serving cell of the terminal device. For example, when calculating the link margin between the terminal device and the serving cell, the corresponding cell can be the serving cell of the terminal device; when calculating the link margin between the terminal device and the conditional handover candidate cell, the corresponding cell can be either the conditional handover candidate cell.

[0375] Specifically, uplink margin = EIRP of terminal device per unit frequency domain resource - path loss - other losses + G / T of corresponding cell - Boltzmann constant - expected signal-to-interference-to-noise ratio;

[0376] Downlink margin = EIRP of the corresponding cell per unit frequency domain resource - path loss - other losses + GT of terminal equipment - Boltzmann constant - expected signal-to-interference-to-noise ratio.

[0377] In some embodiments, if the number of cells in at least one conditional handover candidate cell where the handover execution conditions are met is 1, then the terminal device may determine the 1 cell where the handover execution conditions are met as the target cell.

[0378] In some embodiments, if the number of cells in at least one conditional handover candidate cell that meets the handover execution conditions is greater than 1, the terminal device may determine the cell with the largest link margin in the conditional handover candidate cells that meet the handover execution conditions as the target cell.

[0379] In the handover method provided in this embodiment, the terminal device can receive configuration information and determine the target cell based on the configuration information. In this method, the terminal device does not need to perform neighbor cell measurements, resulting in a shorter handover process and improved handover timeliness.

[0380] Based on the above embodiments, the first network device can further determine whether the terminal device supports conditional handover based on link margin, and can send configuration information to the terminal device if it is determined that the terminal device supports conditional handover based on link margin. Below, in conjunction with... Figure 3 The method for the first network device to determine whether the terminal device supports conditional handover based on link margin is explained.

[0381] Figure 3 This is a flowchart illustrating another handover method provided in an embodiment of this application. The executing entity of this method can be a first network device or a handover device installed within the first network device. The handover device can be implemented through software or a combination of software and hardware. For ease of understanding, the example of the executing entity being the first network device will be used for explanation. Figure 3 As shown, the method may include:

[0382] S301, Receive the first information sent by the terminal device.

[0383] Accordingly, the terminal device sends the first information to the first network device.

[0384] The first piece of information is used to indicate at least one of the following: the terminal device supports conditional handover based on link margin, or does not support conditional handover based on link margin; the terminal device's EIRP; the terminal device's G / T; and the minimum elevation angle supported by the terminal device.

[0385] In some embodiments, the first information may include an indication field, which indicates whether the terminal device supports conditional handover based on link margin or does not support conditional handover based on link margin. The length of the indication field can be set according to actual needs. Optionally, the length of the indication field can be 1 bit.

[0386] Specifically, when the indication field exists and is the first character, it can indicate that the terminal device supports conditional handover based on link margin; when the indication field exists and is the second character, it can indicate that the terminal device does not support conditional handover based on link margin; when the indication field does not exist, it can indicate that the terminal device does not support conditional handover based on link margin. The first and second characters can be set according to actual needs, and this embodiment does not limit their use.

[0387] In some embodiments, the first information indicates that the terminal device supports conditional handover based on link margin when the first information includes at least one of the following: the terminal device's EIRP; the terminal device's G / T; and the minimum elevation angle supported by the terminal device.

[0388] In some embodiments, the terminal device may send first information to the first network device in any of the following processes: terminal capability reporting process; terminal auxiliary information reporting process; measurement reporting process.

[0389] In some embodiments, the terminal device may send first information to the first network device during the terminal capability reporting process. The first information may be carried by user equipment capability information (UE Capability Information).

[0390] In some embodiments, the terminal device may send first information to the first network device during the terminal assistance information reporting process. The first information may be carried by User Equipment Assistance Information (UE Assistance Information).

[0391] In some embodiments, the terminal device may send first information to the first network device during the measurement reporting process. The first information may be carried by a measurement report (MR).

[0392] It should be noted that the first information may include one or more of the following: an indication field, the terminal device's EIRP, the terminal device's G / T, and the minimum elevation angle supported by the terminal device. If the first information includes multiple items, the terminal device may send the first information to the first network device in one or more processes.

[0393] For example, assuming the first information includes an indication field, the terminal device's EIRP, the terminal device's G / T, and the minimum elevation angle supported by the terminal device, the terminal device can send the indication field to the first network device during the terminal capability reporting process, and can send the terminal device's EIRP, the terminal device's G / T, and the minimum elevation angle supported by the terminal device to the first network device during the terminal auxiliary information reporting process.

[0394] In the handover method provided in this embodiment, the first network device can receive first information sent by the terminal device to determine whether the terminal device supports conditional handover based on link margin. Through the above method, the first network device can determine whether the terminal device supports conditional handover based on link margin.

[0395] Based on any of the above embodiments, the first network device can further determine whether the terminal device needs to perform a handover. If the terminal device needs to perform a handover, the first network device can obtain the execution conditions of each candidate cell and send the handover execution conditions of the conditional handover candidate cells to the terminal device. Below, in conjunction with... Figure 4 The process of the first network device sending the execution conditions of each candidate cell to the terminal device is explained.

[0396] Figure 4 This is a flowchart illustrating another handover method provided in an embodiment of this application. The executing entity of this method can be a first network device or a handover device installed within the first network device. The handover device can be implemented through software or a combination of software and hardware. For ease of understanding, the example of the first network device as the executing entity will be used for explanation. Figure 4 As shown, the method may include:

[0397] S401. Determine at least one conditional handover candidate cell corresponding to the terminal device.

[0398] At least one conditional handover candidate cell corresponding to the terminal device is determined if at least one of the following conditions is met:

[0399] The load of the serving cell of the terminal device is greater than or equal to the preset load;

[0400] The terminal device has a first service flow, the priority of the first service flow is greater than or equal to the preset priority, and the service quality of the first service flow in the candidate cell for conditional handover is greater than the service quality of the first service flow in the serving cell.

[0401] There is a coverage vulnerability in the satellite orbit where the service cell is located, and the area corresponding to the coverage vulnerability is uncovered terminal devices.

[0402] In some embodiments, the load of the serving cell includes, but is not limited to, the air interface resource utilization rate of the serving cell, or the number of terminal devices served by the serving cell.

[0403] In some embodiments, the preset load may be a pre-set air interface resource utilization threshold or an upper limit for the terminal devices serving the service.

[0404] In some embodiments, the first service flow can be the highest priority service quality flow among the service quality flow (QosFlow) corresponding to the terminal device.

[0405] In some embodiments, the first network device may identify cells covered by the second network device as candidate cells for handover.

[0406] In some embodiments, the second network device may be a different network device from the first network device. The number of second network devices may be one or more. Specifically, the number of second network devices may be two or more.

[0407] S402. Obtain the handover execution conditions for each candidate cell under each handover condition.

[0408] In some embodiments, the first network device may obtain the handover execution conditions of each conditional handover candidate cell from the second network device.

[0409] Specifically, for any given second network device, the second network device can obtain the handover execution conditions for the corresponding conditional handover candidate cells from the second network device.

[0410] S403. Send configuration information to the terminal device. The configuration information includes the handover execution conditions of each candidate cell in at least one conditional handover candidate cell.

[0411] The configuration information is used by the terminal device to determine the target cell from at least one conditional handover candidate cell.

[0412] It should be noted that for details regarding configuration information, please refer to [link / reference]. Figure 2 Examples are not described here.

[0413] In the handover method provided in this embodiment, the first network device can determine at least one conditional handover candidate cell corresponding to the terminal device; it can obtain the handover execution conditions of each conditional handover candidate cell; and it can send configuration information to the terminal device. Through the above method, the purpose of the first network device sending the handover execution conditions of the conditional handover candidate cells to the terminal device is achieved.

[0414] Based on any of the above embodiments, the following, in conjunction with Figure 5 The process of the first network device sending the execution conditions of each candidate cell to the terminal device is further explained.

[0415] Figure 5 This is a flowchart illustrating yet another switching method provided in an embodiment of this application. Figure 5 As shown, the method may include:

[0416] S501, The first network device determines at least one conditional handover candidate cell corresponding to the terminal device.

[0417] It should be noted that the specific implementation of S501 can be found in S401, and will not be repeated here.

[0418] S502, the first network device sends a handover request message to the second network device corresponding to the candidate cell for conditional handover.

[0419] Accordingly, the second network device receives the handover request message sent by the first network device. The handover request message is used to request that the terminal device be handed over to the cell corresponding to the second network device.

[0420] The handover request message includes at least one of the following: at least one of the first pieces of information, wherein the first pieces of information are sent by the terminal device to the first network device; and the location of the terminal device.

[0421] It should be noted that for an explanation of the first piece of information, please refer to [link / reference needed]. Figure 3 Examples are not described here.

[0422] It should be noted that there can be one or more second network devices. Figure 5 The example only uses a second network device with a quantity of 1, and does not constitute a limitation on the switching method provided in the embodiments of this application.

[0423] S503. The second network device sends a handover confirmation message to the first network device according to the handover request message. The handover confirmation message includes the handover execution conditions of the conditional handover candidate cell corresponding to the second network device.

[0424] Correspondingly, the first network device receives a handover confirmation message sent by the second network device.

[0425] In some embodiments, the second network device may determine the handover execution conditions of the conditional handover candidate cell based on at least one of the following: the location of the terminal device, the EIRP of the terminal device, the G / T of the terminal device, the minimum elevation angle supported by the terminal device, the EIRP of the serving cell of the terminal device, the G / T of the serving cell of the terminal device, the EIRP of the conditional handover candidate cell, and the G / T of the conditional handover candidate cell.

[0426] It should be noted that the technical solutions provided in this application do not limit the specific method for determining the handover execution conditions of candidate cells for conditional handover, as long as the purpose of determining the handover execution conditions of candidate cells for conditional handover can be achieved.

[0427] It should be noted that before determining the handover execution conditions, the second network device can also obtain the EIRP of the serving cell and the G / T of the serving cell of the terminal device. For the method of the second network device obtaining the EIRP of the serving cell and the G / T of the serving cell of the terminal device, please refer to [link to documentation]. Figure 6 Implementation examples or Figure 7 Examples are not described here.

[0428] S504. The first network device sends configuration information to the terminal device. The configuration information includes the handover execution conditions of each candidate cell in at least one conditional handover candidate cell.

[0429] In the handover method provided in this embodiment, a first network device can determine at least one conditional handover candidate cell corresponding to the terminal device and send a handover request message to a second network device corresponding to the conditional handover candidate cell. The second network device can send a handover confirmation message to the first network device based on the handover request message. The handover confirmation message includes the handover execution conditions of the conditional handover candidate cell corresponding to the second network device. The first network device can also send configuration information to the terminal device, including the handover execution conditions of each candidate cell in the at least one conditional handover candidate cell. This method achieves the purpose of sending the handover execution conditions of each conditional handover candidate cell to the terminal device. Through this method, the terminal device client determines the target cell from at least one conditional handover candidate cell based on the configuration information, without needing to perform neighbor cell measurements, resulting in a shorter handover process and improved handover timeliness.

[0430] It should be noted that, Figure 5 In this embodiment, the second network device can determine the handover execution conditions of the corresponding conditional handover candidate cells based on the handover request message. In some embodiments, the first network device may also determine the handover execution conditions of each conditional handover candidate cell.

[0431] It should be noted that if the handover execution conditions for the candidate cells are determined by the first network device, the first network device can also obtain the EIRP and G / T of each candidate cell. For the method by which the first network device obtains the EIRP and G / T of each candidate cell, please refer to [link to documentation]. Figure 6 Implementation examples or Figure 7 Examples are not described here.

[0432] Based on any of the above embodiments, the first network device and the second network device can also exchange the EIRP and / or G / T of the cell corresponding to the first network device, and the EIRP and / or G / T of the cell corresponding to the second network device. Below, taking any one of the second network devices as an example, combined with... Figure 6 The interaction method between the first network device and the second network device is described.

[0433] Figure 6 This is a flowchart illustrating yet another switching method provided in an embodiment of this application. Figure 6 As shown, the method may include:

[0434] S601. The second network device sends second information to the first network device. The second information includes the EIRP and / or G / T of the cell corresponding to the second network device.

[0435] Correspondingly, the first network device receives the second information sent by the second network device.

[0436] The cell corresponding to the second network device can be the cell where the second network device is deployed. It should be understood that the cell corresponding to the second network device can include candidate cells for handover.

[0437] In some embodiments, an Xn interface exists between the first network device and the second network device. The second network device can send second information to the first network device through the Xn interface.

[0438] It should be noted that the second network device sending the second information to the first network device may include: the second network device sending the second information to the first network device for the first time, and the second network device sending the updated second information to the first network device.

[0439] The updated second information may include the updated EIRP and / or updated G / T for the cell corresponding to the second network device.

[0440] S602. The first network device sends third information to the second network device. The third information includes the EIRP and / or G / T of the cell corresponding to the first network device.

[0441] Correspondingly, the second network device receives the third information sent by the first network device.

[0442] The cell corresponding to the first network device can be the cell where the first network device is deployed. It should be understood that the cell corresponding to the first network device can include the serving cell of the terminal device.

[0443] In some embodiments, the first network device may send third information to the second network device through the Xn interface between the first network device and the second network device.

[0444] It should be noted that the first network device sending third information to the second network device may include: the first network device sending third information to the second network device for the first time, and the first network device sending updated third information to the second network device.

[0445] The updated third information may include the updated EIRP and / or updated G / T of the cell corresponding to the first network device.

[0446] It should be noted that S602 can be executed after S601; or, S602 can be executed before S601; or, S602 can be executed simultaneously with S601. This application's embodiments do not limit this. Figure 6 The following explanation will only take the example of S602 being executed after S601.

[0447] In the handover method provided in this embodiment, the second network device can directly send the EIRP and / or G / T of the cell corresponding to the second network device to the first network device, and the first network device can directly send the EIRP and / or G / T of the cell corresponding to the first network device to the second network device. Through this method, the purpose of interaction between the first network device and the second network device can be achieved.

[0448] Based on any of the above embodiments, the following section takes any second network device as an example, combined with... Figure 7 Another interaction method between the first network device and the second network device will be described.

[0449] Figure 7 This is a flowchart illustrating yet another switching method provided in an embodiment of this application. Figure 7 As shown, the method may include:

[0450] S701, The first network device sends a first request message to the second network device, the first request message being used to request the acquisition of second information.

[0451] Correspondingly, the second network device receives the first request message sent by the first network device.

[0452] S702, the second network device sends second information to the first network device, the second information including the EIRP and / or G / T of the cell corresponding to the second network device.

[0453] In response to the first request message, the second network device may send second information to the first network device.

[0454] It should be noted that the specific implementation of S702 can be found in S601, and will not be repeated here.

[0455] S703, the second network device sends a second request message to the first network device, the second request message being used to request the acquisition of third information.

[0456] Accordingly, the first network device receives the second request message sent by the second network device.

[0457] It should be noted that S703 can be executed after S701; or, S703 can be executed before S701; or, S703 can be executed simultaneously with S701. This application's embodiments do not limit this. Figure 7 The following explanation will only take the example of S703 being executed after S701.

[0458] S704. The first network device sends third information to the second network device. The third information includes the EIRP and / or G / T of the cell corresponding to the first network device.

[0459] In response to the second request message, the first network device may send third information to the second network device.

[0460] It should be noted that the specific implementation of S704 can be found in S602, and will not be repeated here.

[0461] In the handover method provided in this embodiment, in response to a first request message from a first network device, a second network device can send the EIRP and / or G / T of the cell corresponding to the second network device to the first network device. In response to a second request message from the second network device, the first network device can send the EIRP and / or G / T of the cell corresponding to the first network device to the second network device. Through the above method, the purpose of interaction between the first network device and the second network device can be achieved.

[0462] Based on any of the above embodiments, the following is combined with Figure 8 The switching method provided in the embodiments of this application will be further explained.

[0463] Figure 8 This is a flowchart illustrating yet another switching method provided in an embodiment of this application. Figure 8 As shown, the method may include:

[0464] S801. The second network device sends second information to the first network device. The second information includes the EIRP and / or G / T of the cell corresponding to the second network device.

[0465] Optionally, before the second network device sends the second information to the first network device, the first network device may also send a first request message to the second network device, the first request message being used to request the acquisition of the second information.

[0466] S802, the first network device sends third information to the second network device, the third information including the EIRP and / or G / T of the cell corresponding to the first network device.

[0467] Optionally, before the first network device sends the third information to the second network device, the second network device may also send a second request message to the first network device, the second request message being used to request the acquisition of the third information.

[0468] It should be noted that the specific implementation methods of S801-S802 can be found in S601-S602, and will not be repeated here.

[0469] S803, The terminal device sends the first information to the first network device.

[0470] It should be noted that the specific implementation of S803 can be found in S301, and will not be repeated here. In addition, S803 can be executed before S801 or S802, or after S801 or S802, or simultaneously with S801 or S802, or simultaneously with both S801 and S802. Figure 8 The example given is only S803 being executed after S801 and S802, and does not constitute a limitation on the technical solutions provided in the embodiments of this application.

[0471] S804. The first network device determines at least one conditional handover candidate cell corresponding to the terminal device.

[0472] S805, the first network device sends a handover request message to the second network device corresponding to the candidate cell for conditional handover.

[0473] S806. The second network device sends a handover confirmation message to the first network device according to the handover request message. The handover confirmation message includes the handover execution conditions of the conditional handover candidate cell corresponding to the second network device.

[0474] S807. The first network device sends configuration information to the terminal device. The configuration information includes the handover execution conditions of each candidate cell in at least one conditional handover candidate cell.

[0475] It should be noted that the specific implementation methods of S804-S807 can be found in S501-S504, and will not be repeated here.

[0476] S808: The terminal device determines the target cell based on the configuration information.

[0477] It should be noted that the specific implementation of S808 can be found in S202, and will not be repeated here.

[0478] In the handover method provided in this embodiment, the second network device can send the EIRP and / or G / T of the cell corresponding to the second network device to the first network device, and the first network device can send the EIRP and / or G / T of the cell corresponding to the first network device to the second network device; the terminal device can send first information to the first network device; the first network device can determine at least one conditional handover candidate cell corresponding to the terminal device, and can send a handover request message to the second network device corresponding to the conditional handover candidate cell; the second network device can send the handover execution conditions of the conditional handover candidate cell corresponding to the second network device to the first network device according to the handover request message; the first network device can send the handover execution conditions of each candidate cell in at least one conditional handover candidate cell to the terminal device; the terminal device can determine the target cell according to the configuration information. In the above method, the terminal device does not need to perform neighbor cell measurement, which shortens the handover process and improves the handover timeliness.

[0479] Figure 9 This is a schematic diagram of a switching device provided in an embodiment of this application. The switching device 10 is applied to a terminal device, and the switching device 10 includes a receiving module 11 and a determining module 12, wherein...

[0480] The receiving module 11 is specifically used to receive configuration information, the configuration information including handover execution conditions for each candidate cell in at least one conditional handover candidate cell, the handover execution conditions being related to the link margin of the serving cell and / or the conditional handover candidate cell of the terminal device;

[0481] The determining module 12 is specifically used to determine a target cell based on the configuration information, wherein the at least one conditional handover candidate cell includes the target cell, and the handover execution conditions of the target cell are met.

[0482] The switching device provided in this embodiment can execute the method executed by the terminal device in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0483] In one possible implementation, the switching execution condition includes a first trigger condition and / or a second trigger condition, wherein,

[0484] The first triggering condition is a switching triggering condition based on business experience;

[0485] The second triggering condition is a switching triggering condition based on link margin.

[0486] In one possible implementation, the switching execution condition includes a first triggering condition, which includes:

[0487] The link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the first margin threshold.

[0488] In one possible implementation, the configuration information further includes at least one of the following: the first margin threshold, the first hysteresis value, or the first trigger duration, wherein,

[0489] The first hysteresis value is a parameter used to determine whether the entry condition and / or exit condition of the first triggering condition are met;

[0490] The first trigger duration is the minimum duration during which the entry condition of the first trigger condition is met before the execution condition is switched.

[0491] In one possible implementation, the switching execution condition includes a second triggering condition, which includes at least one of the following:

[0492] The first link margin between the terminal device and the serving cell is less than or equal to the second margin threshold;

[0493] The second link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the third margin threshold.

[0494] The difference between the second link margin and the first link margin is greater than or equal to a preset offset, and the second link margin is greater than the first link margin;

[0495] The first link margin is less than or equal to the fourth margin threshold, and the second link margin is greater than or equal to the fifth margin threshold.

[0496] In one possible implementation, the configuration information further includes at least one of the following: a second margin threshold, a third margin threshold, a preset offset, a fourth margin threshold, a fifth margin threshold, a second hysteresis value, or a second trigger duration, wherein,

[0497] The second hysteresis value is a parameter used to determine whether the entry condition and / or exit condition of the second triggering condition are met;

[0498] The second trigger duration is the minimum duration during which the entry condition of the second trigger condition is met before the execution condition is switched.

[0499] In one possible implementation, the link margin includes uplink margin and / or downlink margin.

[0500] In one possible implementation, the configuration information further includes at least one of the following:

[0501] The identifiers of each candidate cell in the at least one conditional handover candidate cell;

[0502] The first configuration information of the serving cell;

[0503] The second configuration information of the candidate cells for conditional handover.

[0504] In one possible implementation, the first configuration information includes at least one of the following:

[0505] The effective isotropic radiated power (EIRP) of the serving cell;

[0506] The quality factor G / T of the receiving system of the serving cell.

[0507] In one possible implementation, the second configuration information includes at least one of the following:

[0508] The effective isotropic radiated power (EIRP) of the candidate cells for conditional handover;

[0509] The receiving system quality factor G / T of the candidate cell for conditional handover.

[0510] In one possible implementation, the switching execution condition further includes at least one of the following:

[0511] Triggering conditions based on measurement;

[0512] Distance-based triggering conditions; or,

[0513] Time-based triggering conditions.

[0514] In one possible implementation, the determining module 12 is specifically used for,

[0515] Based on the configuration information and at least one piece of information, determine the target cell from the at least one conditional handover candidate cells;

[0516] The at least one piece of information includes at least one of the following:

[0517] The location information of the terminal device;

[0518] Satellite ephemeris information of the service cell;

[0519] Satellite ephemeris information of the candidate cells for conditional handover;

[0520] The epoch time of the service cell;

[0521] The epoch time of the candidate cells for conditional handover;

[0522] The EIRP of the terminal device;

[0523] G / T of the terminal equipment;

[0524] The lowest elevation angle supported by the terminal device.

[0525] In one possible implementation, if the number of candidate cells for handover where the handover execution conditions are met is greater than one...

[0526] The target cell is the cell with the largest link margin among the candidate cells for handover where the handover execution conditions are met.

[0527] Figure 10 This is a schematic diagram of another switching device provided in an embodiment of this application. Figure 9 Based on this, the switching device 10 further includes an execution module 13 and a sending module 14, wherein,

[0528] The execution module 13 is used to perform a handover operation to the target cell.

[0529] In one possible implementation, the sending module 14 is used to,

[0530] Send a first message to the network device, the first message indicating at least one of the following:

[0531] The terminal device may or may not support conditional handover based on link margin.

[0532] The EIRP of the terminal device;

[0533] G / T of the terminal equipment;

[0534] The lowest elevation angle supported by the terminal device.

[0535] The switching device provided in this embodiment can execute the method executed by the terminal device in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0536] Figure 11 This is a schematic diagram of another switching device provided in an embodiment of this application. The switching device 20 is applied to a first network device, and the switching device 20 includes a determining module 21, an acquiring module 22, and a sending module 23, wherein...

[0537] The determining module 21 is used to determine at least one conditional handover candidate cell corresponding to the terminal device;

[0538] The acquisition module 22 is used to acquire the handover execution conditions of each handover candidate cell;

[0539] The sending module 23 is used to send configuration information to the terminal device. The configuration information includes the handover execution conditions of each candidate cell in the at least one conditional handover candidate cell. The configuration information is used by the terminal device to determine the target cell in the at least one conditional handover candidate cell.

[0540] The switching device provided in this embodiment can execute the method executed by the first network device in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0541] In one possible implementation, the determining module 21 is specifically used for,

[0542] At least one conditional handover candidate cell corresponding to the terminal device is determined if at least one of the following conditions is met:

[0543] The load of the serving cell of the terminal device is greater than or equal to the preset load;

[0544] The terminal device has a first service flow, the priority of the first service flow is greater than or equal to a preset priority, and the service quality of the first service flow in the conditional handover candidate cell is greater than the service quality of the first service flow in the serving cell.

[0545] The satellite orbit where the service cell is located has a coverage gap, and the area corresponding to the coverage gap is to be covered by the terminal device.

[0546] In one possible implementation, the acquisition module 22 is specifically used for,

[0547] Send a handover request message to the second network device corresponding to the candidate cell for handover under the condition;

[0548] The system receives a handover confirmation message from the second network device, the handover confirmation message including the handover execution conditions.

[0549] In one possible implementation, the switching request message includes at least one of the following:

[0550] At least one of the first pieces of information, wherein the first pieces of information are sent by the terminal device to the first network device;

[0551] The location of the terminal device.

[0552] In one possible implementation, the first information is used to indicate at least one of the following:

[0553] The terminal device may or may not support conditional handover based on link margin.

[0554] The EIRP of the terminal device;

[0555] G / T of the terminal equipment;

[0556] The lowest elevation angle supported by the terminal device.

[0557] In one possible implementation, the acquisition module 22 is further used to,

[0558] Receive the first information sent by the terminal device.

[0559] In one possible implementation, the switching execution condition includes a first trigger condition and a second trigger condition.

[0560] in,

[0561] The first triggering condition is a switching triggering condition based on business experience;

[0562] The second triggering condition is a switching triggering condition based on link margin.

[0563] In one possible implementation, the switching execution condition includes a first triggering condition, which includes:

[0564] The link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the first margin threshold.

[0565] In one possible implementation, the configuration information further includes at least one of the following: the first margin threshold, the first hysteresis value, or the first trigger time, wherein,

[0566] The first hysteresis value is a threshold used to determine whether the entry condition and / or exit condition of the first triggering condition are met;

[0567] The first trigger duration is the minimum duration during which the entry condition of the first trigger condition is met before the execution condition is switched.

[0568] In one possible implementation, the switching execution condition includes a second triggering condition, the second trigger including at least one of the following:

[0569] The first link margin between the terminal device and the serving cell is less than or equal to the second margin threshold;

[0570] The second link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the third margin threshold.

[0571] The difference between the second link margin and the first link margin is greater than or equal to a preset offset, and the second link margin is greater than the first link margin;

[0572] The first link margin is less than or equal to the fourth margin threshold, and the second link margin is greater than or equal to the fifth margin threshold.

[0573] In one possible implementation, the configuration information further includes at least one of the following: a second margin threshold, a third margin threshold, a preset offset, a fourth margin threshold, a fifth margin threshold, a second hysteresis value, or a second trigger duration, wherein,

[0574] The second hysteresis value is a threshold used to determine whether the entry condition and / or exit condition of the second triggering condition are met;

[0575] The second trigger duration is the minimum duration during which the entry condition of the second trigger condition is met before the execution condition is switched.

[0576] In one possible implementation, the link margin includes uplink margin and / or downlink margin.

[0577] In one possible implementation, the configuration information further includes at least one of the following:

[0578] The identifiers of each candidate cell in the at least one conditional handover candidate cell;

[0579] The first configuration information of the serving cell;

[0580] The second configuration information of the candidate cells for conditional handover.

[0581] In one possible implementation, the first configuration information includes at least one of the following:

[0582] The effective isotropic radiated power (EIRP) of the serving cell;

[0583] The quality factor G / T of the receiving system of the serving cell.

[0584] In one possible implementation, the second configuration information includes at least one of the following:

[0585] The effective isotropic radiated power (EIRP) of the candidate cells for conditional handover;

[0586] The receiving system quality factor G / T of the candidate cell for conditional handover.

[0587] In one possible implementation, the acquisition module 22 is further used to,

[0588] Receive second information from the second network device, the second information including the EIRP and / or G / T of the cell corresponding to the second network device.

[0589] In one possible implementation, the sending module 23 is further configured to,

[0590] A first request message is sent to the second network device, the first request message being used to request the acquisition of the second information.

[0591] In one possible implementation, the sending module 23 is further configured to,

[0592] Send third information to a second network device, the second network device being the network device corresponding to the conditional handover candidate cell, the third information including the EIRP and / or G / T of the cell corresponding to the first network device.

[0593] In one possible implementation, the acquisition module 22 is further used to,

[0594] The system receives a second request message sent by the second network device, the second request message being used to request the acquisition of the third information.

[0595] The switching device provided in this embodiment can execute the method executed by the first network device in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0596] Figure 12 This is a schematic diagram of another switching device provided in an embodiment of this application. The switching device 30 is applied to a second network device, and includes a receiving module 31 and a transmitting module 32, wherein...

[0597] The receiving module 31 is used to receive a handover request message sent by the first network device, the handover request message being used to request the terminal device to be switched to the cell corresponding to the second network device;

[0598] The sending module 32 is used to send a handover confirmation message to the first network device according to the handover request message. The handover confirmation message includes the handover execution conditions of the conditional handover candidate cell corresponding to the second network device.

[0599] The switching device provided in this embodiment can execute the method executed by the second network device in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0600] In one possible implementation, the switching request message includes at least one of the following:

[0601] At least one of the first pieces of information, wherein the first pieces of information are sent by the terminal device to the first network device;

[0602] The location of the terminal device.

[0603] In one possible implementation, the first information is used to indicate at least one of the following:

[0604] The terminal device may or may not support conditional handover based on link margin.

[0605] The EIRP of the terminal device;

[0606] G / T of the terminal equipment;

[0607] The lowest elevation angle supported by the terminal device.

[0608] In one possible implementation, the sending module 32 is further configured to,

[0609] Send second information to the first network device, the second information including the EIRP and / or G / T of the cell corresponding to the second network device.

[0610] In one possible implementation, the receiving module 31 is further configured to,

[0611] The system receives a first request message sent by the first network device, the first request message being used to request the acquisition of the second information.

[0612] In one possible implementation, the receiving module 31 is further configured to,

[0613] The system receives third information sent by the first network device, the third information including the EIRP and / or G / T of the cell corresponding to the first network device.

[0614] In one possible implementation, the sending module 32 is further configured to,

[0615] A second request message is sent to the first network device, the second request message being used to request the acquisition of the third information.

[0616] The switching device provided in this embodiment can execute the method executed by the second network device in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0617] Figure 13 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 13 As shown, the electronic device 40 may include a processor 41 and a memory 42, wherein the processor 41 and the memory 42 can communicate; for example, the processor 41 and the memory 42 communicate via a communication bus 43, the memory 42 is used to store computer execution instructions, and the processor 41 is used to call the computer execution instructions in the memory to execute the method shown in any of the above method embodiments.

[0618] Optionally, the electronic device 40 may also include a communication interface, which may include a transmitter and / or a receiver.

[0619] The electronic device 40 can be a terminal device, a first network device, or a second network device as described in any of the above embodiments.

[0620] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0621] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0622] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0623] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0624] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0625] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0626] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0627] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0628] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0629] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0630] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0631] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0632] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A switching method, characterized in that, Applied to a terminal device, the method includes: Receive configuration information, the configuration information including handover execution conditions for each candidate cell in at least one conditional handover candidate cell, the handover execution conditions being related to the link margin of the serving cell and / or the conditional handover candidate cell of the terminal device; Based on the configuration information, a target cell is determined, and the at least one conditional handover candidate cell includes the target cell, and the handover execution conditions of the target cell are met.

2. The method according to claim 1, characterized in that, The switching execution conditions include a first trigger condition and / or a second trigger condition, wherein, The first triggering condition is a switching triggering condition based on business experience; The second triggering condition is a switching triggering condition based on link margin.

3. The method according to claim 1 or 2, characterized in that, The switching execution condition includes a first triggering condition, which includes: The link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the first margin threshold.

4. The method according to claim 3, characterized in that, The configuration information also includes at least one of the following: the first margin threshold, the first hysteresis value, or the first trigger duration, wherein, The first hysteresis value is a parameter used to determine whether the entry condition and / or exit condition of the first triggering condition are met; The first trigger duration is the minimum duration during which the entry condition of the first trigger condition is met before the execution condition is switched.

5. The method according to any one of claims 1-4, characterized in that, The switching execution condition includes a second triggering condition, which includes at least one of the following: The first link margin between the terminal device and the serving cell is less than or equal to the second margin threshold; The second link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the third margin threshold. The difference between the second link margin and the first link margin is greater than or equal to a preset offset, and the second link margin is greater than the first link margin; The first link margin is less than or equal to the fourth margin threshold, and the second link margin is greater than or equal to the fifth margin threshold.

6. The method according to claim 5, characterized in that, The configuration information also includes at least one of the following: the second margin threshold, the third margin threshold, the preset offset, the fourth margin threshold, the fifth margin threshold, the second hysteresis value, or the second trigger duration, wherein, The second hysteresis value is a parameter used to determine whether the entry condition and / or exit condition of the second triggering condition are met; The second trigger duration is the minimum duration during which the entry condition of the second trigger condition is met before the execution condition is switched.

7. The method according to any one of claims 1-6, characterized in that, The link margin includes uplink margin and / or downlink margin.

8. The method according to any one of claims 1-7, characterized in that, The configuration information also includes at least one of the following: The identifiers of each candidate cell in the at least one conditional handover candidate cell; The first configuration information of the serving cell; The second configuration information of the candidate cells for conditional handover.

9. The method according to claim 8, characterized in that, The first configuration information includes at least one of the following: The effective isotropic radiated power (EIRP) of the serving cell; The quality factor G / T of the receiving system of the serving cell.

10. The method according to claim 8 or 9, characterized in that, The second configuration information includes at least one of the following: The effective isotropic radiated power (EIRP) of the candidate cells for conditional handover; The receiving system quality factor G / T of the candidate cell for conditional handover.

11. The method according to any one of claims 1-10, characterized in that, The switching execution condition also includes at least one of the following: Triggering conditions based on measurement; Distance-based triggering conditions; or, Time-based triggering conditions.

12. The method according to any one of claims 1-11, characterized in that, Based on the configuration information, the target cell is determined, including: Based on the configuration information and at least one piece of information, determine the target cell from the at least one conditional handover candidate cells; The at least one piece of information includes at least one of the following: The location information of the terminal device; Satellite ephemeris information of the service cell; Satellite ephemeris information of the candidate cells for conditional handover; The epoch time of the service cell; The epoch time of the candidate cells for conditional handover; The EIRP of the terminal device; G / T of the terminal equipment; The lowest elevation angle supported by the terminal device.

13. The method according to any one of claims 1-12, characterized in that, If the number of candidate cells for handover that meet the handover execution conditions is greater than 1. The target cell is the cell with the largest link margin among the candidate cells for handover where the handover execution conditions are met.

14. The method according to any one of claims 1-13, characterized in that, The method further includes: Perform a handover operation to the target cell.

15. The method according to any one of claims 1-14, characterized in that, The method further includes: Send a first message to the network device, the first message indicating at least one of the following: The terminal device may or may not support conditional handover based on link margin. The EIRP of the terminal device; G / T of the terminal equipment; The lowest elevation angle supported by the terminal device.

16. A switching method, characterized in that, Applied to a first network device, the method includes: Determine at least one conditional handover candidate cell corresponding to the terminal device, and obtain the handover execution conditions for each conditional handover candidate cell; The terminal device is sent configuration information, which includes the handover execution conditions of each candidate cell in the at least one conditional handover candidate cell. The configuration information is used by the terminal device to determine the target cell in the at least one conditional handover candidate cell.

17. The method according to claim 16, characterized in that, Determining at least one conditional handover candidate cell corresponding to the terminal device includes: At least one conditional handover candidate cell corresponding to the terminal device is determined if at least one of the following conditions is met: The load of the serving cell of the terminal device is greater than or equal to the preset load; The terminal device has a first service flow, the priority of the first service flow is greater than or equal to a preset priority, and the service quality of the first service flow in the conditional handover candidate cell is greater than the service quality of the first service flow in the serving cell. The satellite orbit where the service cell is located has a coverage gap, and the area corresponding to the coverage gap is to be covered by the terminal device.

18. The method according to claim 16 or 17, characterized in that, Obtaining the handover execution conditions of the candidate cells for handover includes: Send a handover request message to the second network device corresponding to the candidate cell for handover under the condition; The system receives a handover confirmation message from the second network device, the handover confirmation message including the handover execution conditions.

19. The method according to claim 18, characterized in that, The handover request message includes at least one of the following: At least one of the first pieces of information, wherein the first pieces of information are sent by the terminal device to the first network device; The location of the terminal device.

20. The method according to claim 19, characterized in that, The first information is used to indicate at least one of the following: The terminal device may or may not support conditional handover based on link margin. The EIRP of the terminal device; G / T of the terminal equipment; The lowest elevation angle supported by the terminal device.

21. The method according to claim 19 or 20, characterized in that, The method further includes: Receive the first information sent by the terminal device.

22. The method according to any one of claims 16-21, characterized in that, The switching execution conditions include a first triggering condition and a second triggering condition, wherein... The first triggering condition is a switching triggering condition based on business experience; The second triggering condition is a switching triggering condition based on link margin.

23. The method according to any one of claims 16-22, characterized in that, The switching execution condition includes a first triggering condition, which includes: The link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the first margin threshold.

24. The method according to claim 23, characterized in that, The configuration information also includes at least one of the following: the first margin threshold, the first hysteresis value, or the first trigger time, wherein, The first hysteresis value is a threshold used to determine whether the entry condition and / or exit condition of the first triggering condition are met; The first trigger duration is the minimum duration during which the entry condition of the first trigger condition is met before the execution condition is switched.

25. The method according to any one of claims 16-24, characterized in that, The switching execution condition includes a second triggering condition, and the second triggering condition includes at least one of the following: The first link margin between the terminal device and the serving cell is less than or equal to the second margin threshold; The second link margin between the terminal device and the candidate cell for conditional handover is greater than or equal to the third margin threshold. The difference between the second link margin and the first link margin is greater than or equal to a preset offset, and the second link margin is greater than the first link margin; The first link margin is less than or equal to the fourth margin threshold, and the second link margin is greater than or equal to the fifth margin threshold.

26. The method according to claim 25, characterized in that, The configuration information also includes at least one of the following: the second margin threshold, the third margin threshold, the preset offset, the fourth margin threshold, the fifth margin threshold, the second hysteresis value, or the second trigger duration, wherein, The second hysteresis value is a threshold used to determine whether the entry condition and / or exit condition of the second triggering condition are met; The second trigger duration is the minimum duration during which the entry condition of the second trigger condition is met before the execution condition is switched.

27. The method according to any one of claims 22-26, characterized in that, The link margin includes uplink margin and / or downlink margin.

28. The method according to any one of claims 16-27, characterized in that, The configuration information also includes at least one of the following: The identifiers of each candidate cell in the at least one conditional handover candidate cell; The primary configuration information for the service community; The second configuration information of the candidate cells for conditional handover.

29. The method according to claim 28, characterized in that, The first configuration information includes at least one of the following: The effective isotropic radiated power (EIRP) of the serving cell; The quality factor G / T of the receiving system of the serving cell.

30. The method according to claim 28 or 29, characterized in that, The second configuration information includes at least one of the following: The effective isotropic radiated power (EIRP) of the candidate cells for conditional handover; The receiving system quality factor G / T of the candidate cell for conditional handover.

31. The method according to any one of claims 16-30, characterized in that, The method further includes: Receive second information from the second network device, the second information including the EIRP and / or G / T of the cell corresponding to the second network device.

32. The method according to claim 31, characterized in that, The method further includes: A first request message is sent to the second network device, the first request message being used to request the acquisition of the second information.

33. The method according to any one of claims 16-32, characterized in that, The method further includes: Send third information to a second network device, the second network device being the network device corresponding to the conditional handover candidate cell, the third information including the EIRP and / or G / T of the cell corresponding to the first network device.

34. The method according to claim 33, characterized in that, The method further includes: The system receives a second request message sent by the second network device, the second request message being used to request the acquisition of the third information.

35. A switching method, characterized in that, Applied to a second network device, the method includes: The terminal device receives a handover request message sent by the first network device, the handover request message being used to request the terminal device to be handed over to the cell corresponding to the second network device; Based on the handover request message, a handover confirmation message is sent to the first network device, the handover confirmation message including the handover execution conditions of the cell corresponding to the second network device.

36. The method according to claim 35, characterized in that, The handover request message includes at least one of the following: At least one of the first pieces of information, wherein the first pieces of information are sent by the terminal device to the first network device; The location of the terminal device.

37. The method according to claim 36, characterized in that, The first information is used to indicate at least one of the following: The terminal device may or may not support conditional handover based on link margin. The EIRP of the terminal device; G / T of the terminal equipment; The lowest elevation angle supported by the terminal device.

38. The method according to any one of claims 35-37, characterized in that, The method further includes: Send second information to the first network device, the second information including the EIRP and / or G / T of the cell corresponding to the second network device.

39. The method according to claim 38, characterized in that, The method further includes: The system receives a first request message sent by the first network device, the first request message being used to request the acquisition of the second information.

40. The method according to any one of claims 35-37, characterized in that, The method further includes: The system receives third information sent by the first network device, the third information including the EIRP and / or G / T of the cell corresponding to the first network device.

41. The method according to claim 40, characterized in that, The method further includes: A second request message is sent to the first network device, the second request message being used to request the acquisition of the third information.

42. A switching device, characterized in that, Applied to terminal devices, the switching device includes a receiving module and a determining module, wherein, The receiving module is used to receive configuration information, the configuration information including handover execution conditions for each candidate cell in at least one conditional handover candidate cell, the handover execution conditions being related to the link margin of the serving cell and / or the conditional handover candidate cell of the terminal device; The determining module is used to determine a target cell based on the configuration information, wherein the at least one conditional handover candidate cell includes the target cell, and the handover execution conditions of the target cell are met.

43. A switching device, characterized in that, Applied to a first network device, the switching device includes a determining module, an acquiring module, and a sending module, wherein, The determining module is used to determine at least one conditional handover candidate cell corresponding to the terminal device. The acquisition module is used to acquire the handover execution conditions of each candidate cell for handover. The sending module is used to send configuration information to the terminal device. The configuration information includes the handover execution conditions of each candidate cell in the at least one conditional handover candidate cell. The configuration information is used by the terminal device to determine the target cell in the at least one conditional handover candidate cell.

44. A switching device, characterized in that, Applied to a second network device, the switching device includes a receiving module and a transmitting module, wherein, The receiving module is used to receive a handover request message sent by the first network device, the handover request message being used to request the terminal device to be handed over to the cell corresponding to the second network device; The sending module is used to send a handover confirmation message to the first network device according to the handover request message, wherein the handover confirmation message includes the handover execution conditions of the cell corresponding to the second network device.

45. An electronic device, characterized in that, include: Memory, processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory, causing the processor to perform the method as described in any one of claims 1-15, or the method as described in any one of claims 16-34, or the method as described in any one of claims 35-41.

46. ​​A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1-15, or the method as described in any one of claims 16-34, or the method as described in any one of claims 35-41.

47. A computer program product, characterized in that, The method includes a computer program that, when executed by a processor, implements the method of any one of claims 1-15, or implements the method of any one of claims 16-34, or implements the method of any one of claims 35-41.

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