Cell handover method and apparatus, and device

Abstract

Provided in the present disclosure are a cell handover method and apparatus, and a device. The cell handover method comprises: receiving first prediction information related to cell handover and sent by a terminal; selecting at least one candidate target cell; sending a first message to a second network device where the selected candidate target cells are located, wherein the first message is configured to initiate a handover request; and upon receiving a response message to the first message sent by the second network device, sending a second message to the terminal, wherein the second message is configured to instruct the terminal to hand over to a target cell among the selected candidate target cells.

Description

A cell switching method, device and equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202410024336.5 filed in China on January 8, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the field of communication technology, and in particular to a cell switching method, apparatus, and device. Background Art

[0004] Currently, artificial intelligence (AI) or machine learning (ML) technologies have been introduced into several important scenarios in the mobile communications field (for example, network energy saving, load balancing, and mobility optimization). These technologies can analyze and automatically process large amounts of collected data to output corresponding predictions or policies, helping to address complex and difficult-to-model problems and improving network management and user experience. For example, in scenarios where AI technology is used in air interface and high-layer domains, AI or ML models are trained and managed using collected data. These models are then used to generate predictions or infer policies. After the policies are executed, performance parameters related to user equipment (UE, also known as terminals) or base stations are input into the AI ​​model training, helping to refine the AI ​​model and make it more reasonable.

[0005] Among them, in the mobility management mechanism in the connected state, the base station determines the candidate target cell for UE switching based on the measurement results reported by the UE, the load of the target cell and other information, negotiates with the target cell on the relevant resources for accessing the target cell to be used by the UE after switching, and then instructs the UE to switch.

[0006] However, the switching of related technologies is led by the source base station, including the timing of switching and the selection of the target cell for switching. Therefore, the factors on the UE side that can be considered in the switching are relatively limited, which may cause the source base station to make inaccurate judgments on the switching timing and target cell based on the measurement results reported by the UE (for example, it may not conform to the actual situation of the UE's movement trajectory), which may lead to switching failure.

[0007] As described above, the cell handover solutions in the related art have problems such as a certain percentage of handover failures. Summary of the Invention

[0008] The purpose of the present disclosure is to provide a cell handover method, apparatus and device to solve the problem that a certain proportion of handover failures exist in cell handover solutions in related technologies.

[0009] In order to solve the above technical problems, an embodiment of the present disclosure provides a cell handover method, which is applied to a first network device, including:

[0010] receiving first prediction information related to cell switching sent by a terminal;

[0011] selecting at least one candidate target cell;

[0012] Sending a first message to the second network device where the selected candidate target cell is located, where the first message is used to initiate a handover request;

[0013] After receiving a response message to the first message sent by the second network device, a second message is sent to the terminal, where the second message is used to instruct the terminal to switch to a target cell among the selected candidate target cells.

[0014] Optionally, the first prediction information includes: first information corresponding to at least one predicted cell;

[0015] Among them, the first information includes: identification information, cell residence time, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence time within the access beam coverage range, and at least one of the terminal switching time information.

[0016] Optionally, the first prediction information is obtained based on second information; the second information includes: historical motion information.

[0017] Optionally, the selection of the at least one candidate target cell is performed based on the first prediction information and the candidate target cell information.

[0018] Optionally, the first message carries third information corresponding to at least one selected candidate target cell;

[0019] Among them, the third information includes: cell residence time, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, residence time within the access beam coverage range, and at least one of the terminal access time information.

[0020] Optionally, the response message carries handover related information corresponding to at least one candidate target cell; the handover related information includes: at least one of random access resource information, cell radio network temporary identifier C-RNTI, system information, and terminal access time information;

[0021] And / or, the second message carries target cell switching information, and the target cell switching information includes: at least one of random access resource information, C-RNTI, system information, and terminal access time information.

[0022] Optionally, the terminal access time information carried by the handover related information includes: time information of the terminal accessing the beam;

[0023] And / or, the terminal access time information carried in the target cell switching information includes: time information of the terminal accessing the beam.

[0024] Optionally, selecting at least one candidate target cell includes:

[0025] Using an AI or ML model, select at least one candidate target cell.

[0026] Optionally, also include:

[0027] receiving terminal performance related information sent by the second network device;

[0028] The terminal performance related information includes at least one of the following:

[0029] Uplink data packet delay information;

[0030] Uplink throughput information;

[0031] Actual length of stay in the community;

[0032] Working time under access beam;

[0033] Downlink data packet delay information;

[0034] Downlink throughput information.

[0035] Optionally, also include:

[0036] Update the local AI or ML model based on the terminal performance related information.

[0037] The embodiment of the present disclosure further provides a cell handover method, applied to a second network device, including:

[0038] receiving a first message sent by a first network device, where the first message is used to initiate a handover request;

[0039] Send a response message to the first message to the first network device.

[0040] Optionally, before sending a response message to the first message to the first network device, the method further includes:

[0041] determining whether to allow the terminal corresponding to the handover request to access at least one candidate target cell under the second network device, and obtaining a determination result;

[0042] According to the determination result, a response message to the first message is obtained.

[0043] Optionally, the determining whether to allow the terminal corresponding to the handover request to access at least one candidate target cell under the second network device to obtain a determination result includes:

[0044] According to the handover request, it is determined whether the terminal corresponding to the handover request is allowed to access at least one candidate target cell under the second network device, and a determination result is obtained.

[0045] Optionally, the first message carries third information corresponding to at least one candidate target cell selected by the first network device;

[0046] Among them, the third information includes: cell residence time, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, residence time within the access beam coverage range, and at least one of the terminal access time information.

[0047] Optionally, the response message carries handover related information corresponding to at least one candidate target cell; the handover related information includes: random access resource information, C-RNTI, system information, and at least one of terminal access time information.

[0048] Optionally, the terminal access time information carried by the switching related information includes: time information of the terminal accessing the beam.

[0049] Optionally, also include:

[0050] Obtaining terminal performance related information of the terminal corresponding to the first message;

[0051] Sending the terminal performance related information to the first network device;

[0052] The terminal performance related information includes at least one of the following:

[0053] Uplink data packet delay information;

[0054] Uplink throughput information;

[0055] Actual length of stay in the community;

[0056] Working time under access beam;

[0057] Downlink data packet delay information;

[0058] Downlink throughput information.

[0059] Optionally, the acquiring terminal performance related information of the terminal includes at least one of the following:

[0060] Obtaining statistically first performance related information after the terminal accesses the target cell;

[0061] receiving second performance-related information sent by the terminal;

[0062] The first performance-related information includes at least one of downlink data packet delay information, downlink throughput information, actual cell stay time, and working time under the access beam;

[0063] The second performance-related information includes at least one of uplink data packet delay information, uplink throughput information, actual cell residence time, and working time under the access beam.

[0064] Optionally, the terminal performance related information of the terminal is obtained based on the first performance related information and the second performance related information.

[0065] The present disclosure also provides a cell handover method, which is applied to a terminal and includes:

[0066] Obtaining first prediction information related to cell switching;

[0067] Sending the first prediction information to the first network device;

[0068] receiving a second message sent by the first network device, where the second message is used to instruct the terminal to switch to one of the candidate target cells selected by the first network device;

[0069] Perform cell switching operations.

[0070] Optionally, the first prediction information includes: first information corresponding to at least one predicted cell;

[0071] Among them, the first information includes: identification information, cell residence time, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence time within the access beam coverage range, and at least one of the terminal switching time information.

[0072] Optionally, the first prediction information is obtained based on second information; the second information includes: historical motion information.

[0073] Optionally, the second message carries target cell switching information, and the target cell switching information includes: random access resource information, C-RNTI, system information, and at least one of terminal access time information.

[0074] Optionally, the terminal access time information carried by the target cell switching information includes: time information of the terminal accessing the beam.

[0075] Optionally, when the target cell switching information includes the terminal access time information, the performing the cell switching operation includes:

[0076] A cell switching operation is performed within a time corresponding to the terminal access time information.

[0077] Optionally, also include:

[0078] Obtaining statistically the second performance related information after the terminal accesses the target cell;

[0079] Sending the second performance related information to the second network device where the target cell is located;

[0080] The second performance-related information includes at least one of uplink data packet delay information, uplink throughput information, actual cell residence time, and working time under the access beam.

[0081] Optionally, the performing a cell switching operation includes:

[0082] A cell switching operation is performed according to the second message.

[0083] The present disclosure also provides a cell switching apparatus, applied to a first network device, including:

[0084] A first receiving module, configured to receive first prediction information related to cell switching sent by a terminal;

[0085] A first processing module is configured to select at least one candidate target cell;

[0086] A first sending module, configured to send a first message to the second network device where the selected candidate target cell is located, where the first message is used to initiate a handover request;

[0087] The second sending module is configured to send a second message to the terminal after receiving a response message to the first message sent by the second network device, where the second message is used to instruct the terminal to switch to a target cell among the selected candidate target cells.

[0088] Optionally, the first prediction information includes: first information corresponding to at least one predicted cell;

[0089] Among them, the first information includes: identification information, cell residence time, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence time within the access beam coverage range, and at least one of the terminal switching time information.

[0090] Optionally, the first prediction information is obtained based on second information; the second information includes: historical motion information.

[0091] Optionally, the selection of the at least one candidate target cell is performed based on the first prediction information and the candidate target cell information.

[0092] Optionally, the first message carries third information corresponding to at least one selected candidate target cell;

[0093] Among them, the third information includes: cell residence time, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, residence time within the access beam coverage range, and at least one of the terminal access time information.

[0094] Optionally, the response message carries handover related information corresponding to at least one candidate target cell; the handover related information includes: at least one of random access resource information, cell radio network temporary identifier C-RNTI, system information, and terminal access time information;

[0095] And / or, the second message carries target cell switching information, and the target cell switching information includes: at least one of random access resource information, C-RNTI, system information, and terminal access time information.

[0096] Optionally, the terminal access time information carried by the handover related information includes: time information of the terminal accessing the beam;

[0097] And / or, the terminal access time information carried in the target cell switching information includes: time information of the terminal accessing the beam.

[0098] Optionally, selecting at least one candidate target cell includes:

[0099] Using an AI or ML model, select at least one candidate target cell.

[0100] Optionally, also include:

[0101] A second receiving module, configured to receive terminal performance related information sent by the second network device;

[0102] The terminal performance related information includes at least one of the following:

[0103] Uplink data packet delay information;

[0104] Uplink throughput information;

[0105] Actual length of stay in the community;

[0106] Working time under access beam;

[0107] Downlink data packet delay information;

[0108] Downlink throughput information.

[0109] Optionally, also include:

[0110] The second processing module is used to update the local AI or ML model according to the terminal performance related information.

[0111] The embodiment of the present disclosure further provides a cell switching apparatus, applied to a second network device, comprising:

[0112] A third receiving module is configured to receive a first message sent by the first network device, where the first message is used to initiate a handover request;

[0113] The third sending module is used to send a response message of the first message to the first network device.

[0114] Optionally, also include:

[0115] A first determining module is configured to determine whether the terminal corresponding to the handover request is allowed to access at least one candidate target cell under the second network device before sending a response message to the first message to the first network device, and obtain a determination result;

[0116] The third processing module is configured to obtain a response message to the first message according to the determination result.

[0117] Optionally, the determining whether to allow the terminal corresponding to the handover request to access at least one candidate target cell under the second network device to obtain a determination result includes:

[0118] According to the handover request, it is determined whether the terminal corresponding to the handover request is allowed to access at least one candidate target cell under the second network device, and a determination result is obtained.

[0119] Optionally, the first message carries third information corresponding to at least one candidate target cell selected by the first network device;

[0120] Among them, the third information includes: cell residence time, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, residence time within the access beam coverage range, and at least one of the terminal access time information.

[0121] Optionally, the response message carries handover related information corresponding to at least one candidate target cell; the handover related information includes: random access resource information, C-RNTI, system information, and at least one of terminal access time information.

[0122] Optionally, the terminal access time information carried by the switching related information includes: time information of the terminal accessing the beam.

[0123] Optionally, also include:

[0124] A first acquisition module, configured to acquire terminal performance related information of the terminal corresponding to the first message;

[0125] A fourth sending module, configured to send the terminal performance related information to the first network device;

[0126] The terminal performance related information includes at least one of the following:

[0127] Uplink data packet delay information;

[0128] Uplink throughput information;

[0129] Actual length of stay in the community;

[0130] Working time under access beam;

[0131] Downlink data packet delay information;

[0132] Downlink throughput information.

[0133] Optionally, the acquiring terminal performance related information of the terminal includes at least one of the following:

[0134] Obtaining statistically first performance related information after the terminal accesses the target cell;

[0135] receiving second performance-related information sent by the terminal;

[0136] The first performance-related information includes at least one of downlink data packet delay information, downlink throughput information, actual cell stay time, and working time under the access beam;

[0137] The second performance-related information includes at least one of uplink data packet delay information, uplink throughput information, actual cell residence time, and working time under the access beam.

[0138] Optionally, the terminal performance related information of the terminal is obtained based on the first performance related information and the second performance related information.

[0139] The present disclosure also provides a cell switching device, applied to a terminal, including:

[0140] A second acquisition module is used to obtain first prediction information related to cell handover;

[0141] a fifth sending module, configured to send the first prediction information to the first network device;

[0142] A fourth receiving module is configured to receive a second message sent by the first network device, where the second message is used to instruct the terminal to switch to a target cell among the candidate target cells selected by the first network device;

[0143] The fourth processing module is used to perform a cell switching operation.

[0144] Optionally, the first prediction information includes: first information corresponding to at least one predicted cell;

[0145] Among them, the first information includes: identification information, cell residence time, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence time within the access beam coverage range, and at least one of the terminal switching time information.

[0146] Optionally, the first prediction information is obtained based on second information; the second information includes: historical motion information.

[0147] Optionally, the second message carries target cell switching information, and the target cell switching information includes: random access resource information, C-RNTI, system information, and at least one of terminal access time information.

[0148] Optionally, the terminal access time information carried by the target cell switching information includes: time information of the terminal accessing the beam.

[0149] Optionally, when the target cell switching information includes the terminal access time information, the performing the cell switching operation includes:

[0150] A cell switching operation is performed within a time corresponding to the terminal access time information.

[0151] Optionally, also include:

[0152] A fifth processing module, configured to obtain statistically the second performance related information after the terminal accesses the target cell;

[0153] A sixth sending module, configured to send the second performance related information to the second network device where the target cell is located;

[0154] The second performance-related information includes at least one of uplink data packet delay information, uplink throughput information, actual cell residence time, and working time under the access beam.

[0155] Optionally, the performing a cell switching operation includes:

[0156] A cell switching operation is performed according to the second message.

[0157] The embodiment of the present disclosure further provides a cell switching device, the cell switching device being a first network device, including: a processor and a transceiver;

[0158] The processor is configured to receive, through the transceiver, first prediction information related to cell switching sent by a terminal;

[0159] selecting at least one candidate target cell;

[0160] Sending, by the transceiver, a first message to a second network device where the selected candidate target cell is located, where the first message is used to initiate a handover request;

[0161] After receiving a response message to the first message sent by the second network device, a second message is sent to the terminal through the transceiver, where the second message is used to instruct the terminal to switch to a target cell among the selected candidate target cells.

[0162] Optionally, the first prediction information includes: first information corresponding to at least one predicted cell;

[0163] Among them, the first information includes: identification information, cell residence time, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence time within the access beam coverage range, and at least one of the terminal switching time information.

[0164] Optionally, the first prediction information is obtained based on second information; the second information includes: historical motion information.

[0165] Optionally, the selection of the at least one candidate target cell is performed based on the first prediction information and the candidate target cell information.

[0166] Optionally, the first message carries third information corresponding to at least one selected candidate target cell;

[0167] Among them, the third information includes: cell residence time, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, residence time within the access beam coverage range, and at least one of the terminal access time information.

[0168] Optionally, the response message carries handover related information corresponding to at least one candidate target cell; the handover related information includes: at least one of random access resource information, cell radio network temporary identifier C-RNTI, system information, and terminal access time information;

[0169] And / or, the second message carries target cell switching information, and the target cell switching information includes: at least one of random access resource information, C-RNTI, system information, and terminal access time information.

[0170] Optionally, the terminal access time information carried by the handover related information includes: time information of the terminal accessing the beam;

[0171] And / or, the terminal access time information carried in the target cell switching information includes: time information of the terminal accessing the beam.

[0172] Optionally, selecting at least one candidate target cell includes:

[0173] Using an AI or ML model, select at least one candidate target cell.

[0174] Optionally, the processor is further configured to:

[0175] receiving, via the transceiver, terminal performance related information sent by the second network device;

[0176] The terminal performance related information includes at least one of the following:

[0177] Uplink data packet delay information;

[0178] Uplink throughput information;

[0179] Actual length of stay in the community;

[0180] Working time under access beam;

[0181] Downlink data packet delay information;

[0182] Downlink throughput information.

[0183] Optionally, the processor is further configured to:

[0184] Update the local AI or ML model based on the terminal performance related information.

[0185] The embodiment of the present disclosure further provides a cell switching device, the cell switching device being a second network device, including: a processor and a transceiver;

[0186] The processor is configured to receive, through the transceiver, a first message sent by a first network device, where the first message is used to initiate a handover request;

[0187] A response message to the first message is sent to the first network device through the transceiver.

[0188] Optionally, the processor is further configured to:

[0189] Before sending a response message to the first message to the first network device, determine whether the terminal corresponding to the handover request is allowed to access at least one candidate target cell under the second network device, and obtain a determination result;

[0190] According to the determination result, a response message to the first message is obtained.

[0191] Optionally, the determining whether to allow the terminal corresponding to the handover request to access at least one candidate target cell under the second network device to obtain a determination result includes:

[0192] According to the handover request, it is determined whether the terminal corresponding to the handover request is allowed to access at least one candidate target cell under the second network device, and a determination result is obtained.

[0193] Optionally, the first message carries third information corresponding to at least one candidate target cell selected by the first network device;

[0194] Among them, the third information includes: cell residence time, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, residence time within the access beam coverage range, and at least one of the terminal access time information.

[0195] Optionally, the response message carries handover related information corresponding to at least one candidate target cell; the handover related information includes: random access resource information, C-RNTI, system information, and at least one of terminal access time information.

[0196] Optionally, the terminal access time information carried by the switching related information includes: time information of the terminal accessing the beam.

[0197] Optionally, the processor is further configured to:

[0198] Obtaining terminal performance related information of the terminal corresponding to the first message;

[0199] sending the terminal performance related information to the first network device via the transceiver;

[0200] The terminal performance related information includes at least one of the following:

[0201] Uplink data packet delay information;

[0202] Uplink throughput information;

[0203] Actual length of stay in the community;

[0204] Working time under access beam;

[0205] Downlink data packet delay information;

[0206] Downlink throughput information.

[0207] Optionally, the acquiring terminal performance related information of the terminal includes at least one of the following:

[0208] Obtaining statistically first performance related information after the terminal accesses the target cell;

[0209] receiving, by the transceiver, second performance related information sent by a terminal;

[0210] The first performance-related information includes at least one of downlink data packet delay information, downlink throughput information, actual cell stay time, and working time under the access beam;

[0211] The second performance-related information includes at least one of uplink data packet delay information, uplink throughput information, actual cell residence time, and working time under the access beam.

[0212] Optionally, the terminal performance related information of the terminal is obtained based on the first performance related information and the second performance related information.

[0213] The embodiment of the present disclosure further provides a cell switching device, which is a terminal and includes: a processor and a transceiver;

[0214] The processor is configured to obtain first prediction information related to cell handover;

[0215] sending the first prediction information to the first network device via the transceiver;

[0216] receiving, by the transceiver, a second message sent by the first network device, where the second message is used to instruct the terminal to switch to one of the candidate target cells selected by the first network device;

[0217] Perform cell switching operations.

[0218] Optionally, the first prediction information includes: first information corresponding to at least one predicted cell;

[0219] Among them, the first information includes: identification information, cell residence time, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence time within the access beam coverage range, and at least one of the terminal switching time information.

[0220] Optionally, the first prediction information is obtained based on second information; the second information includes: historical motion information.

[0221] Optionally, the second message carries target cell switching information, and the target cell switching information includes: random access resource information, C-RNTI, system information, and at least one of terminal access time information.

[0222] Optionally, the terminal access time information carried by the target cell switching information includes: time information of the terminal accessing the beam.

[0223] Optionally, when the target cell switching information includes the terminal access time information, the performing the cell switching operation includes:

[0224] A cell switching operation is performed within a time corresponding to the terminal access time information.

[0225] Optionally, the processor is further configured to:

[0226] Obtaining statistically the second performance related information after the terminal accesses the target cell;

[0227] sending, by the transceiver, the second performance related information to a second network device where the target cell is located;

[0228] The second performance-related information includes at least one of uplink data packet delay information, uplink throughput information, actual cell residence time, and working time under the access beam.

[0229] Optionally, the performing a cell switching operation includes:

[0230] A cell switching operation is performed according to the second message.

[0231] An embodiment of the present disclosure also provides a cell switching device, including a memory, a processor, and a program stored on the memory and runnable on the processor; when the processor executes the program, the above-mentioned cell switching method on the first network device side, the second network device side, or the terminal side is implemented.

[0232] The embodiment of the present disclosure further provides a readable storage medium having a program stored thereon, which, when executed by a processor, implements the steps in the above-mentioned cell switching method on the first network device side, the second network device side, or the terminal side.

[0233] An embodiment of the present disclosure provides a computer program product, including computer instructions, which, when executed by a processor, implement the steps in the cell handover method described above.

[0234] The beneficial effects of the above technical solution disclosed in the present invention are as follows:

[0235] In the above scheme, the cell switching method receives first prediction information related to cell switching sent by the terminal; selects at least one candidate target cell; sends a first message to the second network device where the selected candidate target cell is located, and the first message is used to initiate a switching request; after receiving a response message to the first message sent by the second network device, sends a second message to the terminal, and the second message is used to instruct the terminal to switch to one of the selected candidate target cells; it can support the selection of candidate target cells in combination with the terminal's own prediction information, and then perform cell switching, so that the factors on the UE side can be more fully considered, the switching accuracy can be improved, the switching failure can be avoided as much as possible, and the proportion of cell switching failures can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0236] FIG1 is a schematic diagram of a cell switching method flow chart 1 according to an embodiment of the present disclosure;

[0237] FIG2 is a second flowchart of a cell switching method according to an embodiment of the present disclosure;

[0238] FIG3 is a third flowchart of a cell handover method according to an embodiment of the present disclosure;

[0239] FIG4 is a first structural diagram of a cell switching device according to an embodiment of the present disclosure;

[0240] FIG5 is a second structural diagram of a cell switching device according to an embodiment of the present disclosure;

[0241] FIG6 is a third structural diagram of a cell switching device according to an embodiment of the present disclosure;

[0242] FIG7 is a first structural diagram of a cell switching device according to an embodiment of the present disclosure;

[0243] FIG8 is a second structural diagram of a cell switching device according to an embodiment of the present disclosure;

[0244] FIG9 is a third structural diagram of a cell switching device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0245] In order to make the technical problems, technical solutions and advantages to be solved by the present disclosure clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0246] The present disclosure addresses the problem that a certain proportion of handover failures exist in cell handover solutions in related technologies. A cell handover method is provided, which is applied to a first network device, as shown in FIG1 , and includes:

[0247] Step 11: receiving first prediction information related to cell handover sent by the terminal;

[0248] Step 12: Select at least one candidate target cell;

[0249] Step 13: Send a first message to the second network device where the selected candidate target cell is located, where the first message is used to initiate a handover request;

[0250] Step 14: After receiving a response message to the first message sent by the second network device, a second message is sent to the terminal, where the second message is used to instruct the terminal to switch to a target cell among the selected candidate target cells.

[0251] The first network device may be implemented as a source base station, and the second network device may be implemented as a target base station, but the present invention is not limited thereto.

[0252] The cell switching method provided by the embodiment of the present disclosure receives first prediction information related to cell switching sent by the terminal; selects at least one candidate target cell; sends a first message to a second network device where the selected candidate target cell is located, the first message being used to initiate a switching request; after receiving a response message to the first message sent by the second network device, sends a second message to the terminal, the second message being used to instruct the terminal to switch to one of the selected candidate target cells; can support the selection of candidate target cells in combination with the terminal's own prediction information, and then perform cell switching, so that factors on the UE side can be more fully considered, switching accuracy can be improved, switching failures can be avoided as much as possible, and the proportion of cell switching failures can be reduced.

[0253] The first prediction information includes: first information corresponding to at least one predicted cell; the first information includes: identification information, cell residence time, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence time within the access beam coverage range, and at least one of the terminal switching time information.

[0254] This can support the first network device to more accurately select candidate target cells; wherein, the terminal switching time information can be time point information or time period information; in addition, it can be reflected as absolute time information or relative time information (such as absolute time: 10 o'clock in the morning or 10:00-10:02 in the morning, or relative time: after 100ms or between 100ms-10000ms;).

[0255] In the embodiment of the present disclosure, the first prediction information is obtained based on second information; the second information includes: historical motion information.

[0256] This can ensure the accuracy of the first prediction information. The historical movement information may include: historical movement direction, speed, etc.

[0257] The selection of the at least one candidate target cell is performed based on the first prediction information and the candidate target cell information.

[0258] This can improve the accuracy of candidate target cell selection. The candidate target cell information may include, but is not limited to, load information of the candidate target cell.

[0259] In an embodiment of the present disclosure, the first message carries third information corresponding to at least one selected candidate target cell; wherein the third information includes: cell residence time, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, residence time within the access beam coverage range, and at least one of the terminal access time information.

[0260] This can support the second network device to accurately determine the relevant candidate target cells. The terminal access time information may include the absolute time or relative time when the terminal accesses the cell, which is not limited here.

[0261] The response message carries handover related information corresponding to at least one candidate target cell; the handover related information includes: random access resource information, cell radio network temporary identifier (Cell-Radio Network Temporary Identifier, C-RNTI), system information, and at least one of terminal access time information; and / or, the second message carries target cell handover information, and the target cell handover information includes: random access resource information, C-RNTI, system information, and at least one of terminal access time information.

[0262] This can ensure accurate determination and access to the target cell. The system information may include: system information block (SIB) 1 and / or SIB2, etc., which are system information required for the UE to access the cell and are not limited here.

[0263] In an embodiment of the present disclosure, the terminal access time information carried by the switching related information includes: time information of the terminal accessing the beam; and / or, the terminal access time information carried by the target cell switching information includes: time information of the terminal accessing the beam.

[0264] This allows for clear timing information of the access beam.

[0265] The selecting of at least one candidate target cell includes: selecting at least one candidate target cell using an AI or ML model.

[0266] This can improve network management performance and user experience.

[0267] Furthermore, the cell switching method also includes: receiving terminal performance-related information sent by the second network device; wherein the terminal performance-related information includes at least one of the following: uplink data packet delay information; uplink throughput information; actual cell stay time; working time under the access beam; downlink data packet delay information; downlink throughput information.

[0268] In this way, the first network device can accurately obtain relevant performance information after the terminal accesses the target cell.

[0269] In the embodiment of the present disclosure, the cell switching method further includes: updating a local AI or ML model based on the terminal performance related information.

[0270] This can improve the accuracy of the model.

[0271] The present disclosure also provides a cell handover method, which is applied to a second network device, as shown in FIG2 , and includes:

[0272] Step 21: Receive a first message sent by a first network device, where the first message is used to initiate a handover request;

[0273] Step 22: Send a response message to the first message to the first network device.

[0274] The cell switching method provided in the embodiment of the present disclosure receives a first message sent by a first network device, where the first message is used to initiate a switching request; sends a response message to the first message to the first network device; and can support the first network device to select a candidate target cell based on the terminal's own prediction information, and then perform cell switching to fully implement the switching solution; in this way, UE-side factors can be more fully considered, switching accuracy can be improved, switching failures can be avoided as much as possible, and the proportion of cell switching failures can be reduced.

[0275] Furthermore, before sending a response message to the first message to the first network device, it also includes: determining whether the terminal corresponding to the switching request is allowed to access at least one candidate target cell under the second network device, and obtaining a determination result; and obtaining a response message to the first message based on the determination result.

[0276] In this way, an accurate response corresponding to the switching request can be obtained.

[0277] Among them, determining whether the terminal corresponding to the handover request is allowed to access at least one candidate target cell under the second network device to obtain a determination result includes: determining whether the terminal corresponding to the handover request is allowed to access at least one candidate target cell under the second network device according to the handover request to obtain a determination result.

[0278] In this way, the above determination result can be accurately obtained.

[0279] In an embodiment of the present disclosure, the first message carries third information corresponding to at least one candidate target cell selected by the first network device; wherein the third information includes: cell residence time, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, residence time within the access beam coverage range, and at least one of terminal access time information.

[0280] This can assist the second network device in accurately determining relevant candidate target cells.

[0281] The response message carries handover related information corresponding to at least one candidate target cell; the handover related information includes at least one of random access resource information, C-RNTI, system information, and terminal access time information.

[0282] This ensures accurate determination of the target cell.

[0283] In the embodiment of the present disclosure, the terminal access time information carried by the switching related information includes: time information of the terminal accessing the beam.

[0284] This allows for clear timing information of the access beam.

[0285] Furthermore, the cell switching method also includes: obtaining terminal performance-related information of the terminal corresponding to the first message; sending the terminal performance-related information to the first network device; wherein the terminal performance-related information includes at least one of the following: uplink data packet delay information; uplink throughput information; actual cell stay time; working time under the access beam; downlink data packet delay information; downlink throughput information.

[0286] In this way, the first network device can accurately obtain relevant performance information after the terminal accesses the target cell.

[0287] Among them, the terminal performance related information of the terminal is obtained, including at least one of the following: statistically obtaining the first performance related information after the terminal accesses the target cell; receiving the second performance related information sent by the terminal; wherein, the first performance related information includes: downlink data packet delay information, downlink throughput information, actual cell residence time, and at least one of the working time under the access beam; the second performance related information includes: uplink data packet delay information, uplink throughput information, actual cell residence time, and at least one of the working time under the access beam.

[0288] In this way, the terminal performance related information of the terminal can be accurately obtained.

[0289] In the embodiment of the present disclosure, the terminal performance related information of the terminal is obtained based on the first performance related information and the second performance related information.

[0290] This can improve the accuracy of information related to terminal performance.

[0291] The present disclosure also provides a cell handover method, which is applied to a terminal, as shown in FIG3 , and includes:

[0292] Step 31: Obtain first prediction information related to cell handover;

[0293] Step 32: Sending the first prediction information to the first network device;

[0294] Step 33: Receive a second message sent by the first network device, where the second message is used to instruct the terminal to switch to a target cell among the candidate target cells selected by the first network device;

[0295] Step 34: Perform cell switching operation.

[0296] Wherein, step 34 may include: performing cell switching or accessing a target cell, which is not limited here.

[0297] The cell switching method provided by the embodiment of the present disclosure obtains first prediction information related to cell switching; sends the first prediction information to a first network device; receives a second message sent by the first network device, where the second message is used to instruct the terminal to switch to one of the candidate target cells selected by the first network device; performs a cell switching operation; and can support the first network device to select a candidate target cell based on the terminal's own prediction information, and then perform cell switching, so that factors on the UE side can be more fully considered, switching accuracy can be improved, switching failures can be avoided as much as possible, and the proportion of cell switching failures can be reduced.

[0298] The first prediction information includes: first information corresponding to at least one predicted cell; the first information includes: identification information, cell residence time, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence time within the access beam coverage range, and at least one of the terminal switching time information.

[0299] This can support the first network device to select candidate target cells more accurately.

[0300] In the embodiment of the present disclosure, the first prediction information is obtained based on second information; the second information includes: historical motion information.

[0301] This can ensure the accuracy of the first prediction information.

[0302] The second message carries target cell switching information, and the target cell switching information includes at least one of random access resource information, C-RNTI, system information, and terminal access time information.

[0303] This ensures accurate access to the target cell.

[0304] In the embodiment of the present disclosure, the terminal access time information carried in the target cell switching information includes: time information of the terminal accessing the beam.

[0305] This allows for clear timing information of the access beam.

[0306] Wherein, in the case where the target cell switching information includes the terminal access time information, performing the cell switching operation includes: performing the cell switching operation within the time corresponding to the terminal access time information.

[0307] This ensures that the cell switching operation is performed as successfully as possible.

[0308] Furthermore, the cell switching method also includes: statistically obtaining second performance-related information after the terminal accesses the target cell; sending the second performance-related information to the second network device where the target cell is located; wherein the second performance-related information includes: uplink data packet delay information, uplink throughput information, actual cell stay time, and at least one of the working time under the access beam.

[0309] This can enable the second network device to accurately obtain performance-related information counted by the terminal.

[0310] The performing of the cell switching operation includes: performing the cell switching operation according to the second message.

[0311] This allows accurate execution of cell handover operations.

[0312] It is to be noted that the relevant contents of the first network device side, the second network device side and the terminal side mentioned above can be referred to each other, and the repeated contents will not be repeated.

[0313] The cell switching method provided in the embodiment of the present disclosure is described below with an example, taking a source base station as an example of the first network device and a target base station as an example of the second network device.

[0314] In response to the above technical problems, the embodiments of the present disclosure provide a cell switching method, which can be specifically implemented as a mobility management method based on AI (artificial intelligence), mainly involving: in order to improve the accuracy of the switching, the UE judges the appropriate switching timing, accurate target cell and other related information (corresponding to the above-mentioned first prediction information) based on the richer historical information it has, and reports it to the source base station; the source base station then combines the load and other information of the candidate target cell (corresponding to the above-mentioned candidate target cell information) to select the target cell for resource negotiation and preparation before switching, and notifies the UE to switch. Furthermore, after the switch, the UE can also report the UL (uplink) data packet delay, throughput and other performance information in the target cell (corresponding to the above-mentioned second performance-related information) to help the source base station further optimize the switching model (corresponding to the above-mentioned AI or ML model local to the first network device).

[0315] Specifically, this solution may include the following operations:

[0316] 1. The UE reports predicted handover-related information (corresponding to the above-mentioned first prediction information) to the source base station; the information may include: a cell identifier (cell ID; corresponding to the above-mentioned identifier information) of one or more target cells that can be switched, a length of time stayed in the cell (corresponding to the above-mentioned cell stay time, such as 600 ms), a probability of accessing the cell (corresponding to the above-mentioned cell access probability, such as 60%, or the first probability), a beam identifier (beam ID) (or synchronization signal block identifier (Synchronization Signal / PBCH Block, SSB) identifier (Identifier, ID) or channel state information reference signal (CSI-RS) ID) accessed in the cell, a length of time stayed within the coverage of the beam (corresponding to the above-mentioned stay time within the coverage of the access beam), a UE switching time point (such as absolute time: 10 am, or relative time: after 100 ms) or a switching time period (such as 10:00-10:02 am, or between 100 ms and 10000 ms), at least one of the following; wherein the UE switching time point or the switching time period may correspond to the above-mentioned terminal switching time information.

[0317] Optionally, the information involved in the above-mentioned switching-related information can be predicted by the UE using an AI model based on historical movement direction, speed and other information (corresponding to the above-mentioned historical movement information); wherein, this information can be reported to the source base station together with the current measurement reporting information, or can be reported separately, which is not limited here.

[0318] 2. The source base station selects a suitable (at least one) target base station where the candidate target cell is located, based on the information reported by the UE and in combination with information such as the load of the candidate target cell, and sends a handover request message (corresponding to the above-mentioned selection of at least one candidate target cell; sending a first message to the second network device where the selected candidate target cell is located, the first message is used to initiate a handover request; the selection of the at least one candidate target cell is performed based on the first prediction information and the candidate target cell information); wherein the message may carry information such as the probability of the UE arriving at the target cell, the stay time, the beam ID (SSB ID or CSI-RS ID) accessed in the cell, the length of time stayed within the coverage of the beam, and the absolute time or relative time of access to the cell (corresponding to the above-mentioned first message carrying the third information corresponding to the at least one selected candidate target cell; wherein the third information includes: cell stay time, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, stay time within the coverage of the access beam, and terminal access time information); when multiple candidate target cells allow the UE to access, the source base station can select one of them as the target cell that the UE is about to access, but is not limited to this.

[0319] Optionally, the selection of the candidate target cell is predicted or determined by the source base station based on information such as information reported by the UE using an AI-based handover model; corresponding to the above-mentioned use of the AI ​​or ML model, at least one candidate target cell is selected;

[0320] Among them, regarding the selection of candidate target cells, for example: among cells 1 to 4, only cell 2 and cell 3 are idle, and then candidate target cells can be selected from cells 2 and cell 3 according to the cell access probabilities corresponding to cells 2 and cell 3 respectively. For example, if the cell access probability of cell 2 is higher than the cell access probability of cell 3, cell 2 can be selected as a candidate target cell; but this is not limited to this.

[0321] 3. The target base station performs admission control on the UE (corresponding to the above-mentioned determination of whether the terminal corresponding to the handover request is allowed to access at least one candidate target cell under the second network device), and sends the handover-related information (corresponding to the handover-related information corresponding to the above-mentioned candidate target cell, such as the random access RA resources, C-RNTI, system information, etc. used by the UE in the corresponding cell) to the UE through the source base station; corresponding to the above-mentioned second network device sending a response message to the first message to the first network device; after receiving the response message to the first message sent by the second network device, the above-mentioned first network device sends a second message to the terminal, and the second message is used to instruct the terminal to switch to one of the selected candidate target cells.

[0322] Among them, the second message can carry the time when the UE accesses the target cell, and can further indicate the time information of the specific beam identifier (that is, the time limit for the terminal to access the beam; corresponding to the time information of the above-mentioned terminal access beam); the relevant information about the time can be predicted or judged, and is not limited here.

[0323] 4. The UE performs handover-related operations such as synchronization and random access on the target cell using the indicated beam according to the instruction of the handover command (corresponding to the above-mentioned second message); corresponding to the above-mentioned receiving the second message sent by the first network device, the second message is used to instruct the terminal to switch to one of the candidate target cells selected by the first network device; and performing a cell handover operation according to the second message;

[0324] Among them, if the switching command indicates the time information for the UE to access the target cell and / or beam, the UE accesses the target cell and / or beam at the indicated time; and the cell switching operation is performed within the time corresponding to the terminal access time information.

[0325] 5. After switching to the target cell, the UE collects performance-related information (corresponding to the above-mentioned second performance-related information) over a period of time (the period of time may be configured for the UE by the network-side device, may be determined by the UE itself, or may be defined by the protocol), such as the uplink data packet latency of each cell or each beam (per cell or per beam) (corresponding to the above-mentioned uplink data packet latency information), the uplink throughput of each cell or per beam (corresponding to the above-mentioned uplink throughput information), the length of time the UE stays in the cell (corresponding to the above-mentioned actual cell stay time), the length of time the UE operates under (each) access beam (corresponding to the above-mentioned operating time under the access beam), etc.

[0326] 6. The target base station collects statistics on the performance-related information of the UE over a period of time (corresponding to the above-mentioned first performance-related information), such as the delay of the downlink data packet (corresponding to the above-mentioned downlink data packet delay information), the downlink throughput (corresponding to the above-mentioned downlink throughput information), the length of time stayed in the cell (corresponding to the above-mentioned actual cell stay time), the length of time working under each beam (corresponding to the above-mentioned working time under the access beam), etc.

[0327] 7. The UE reports the above-mentioned statistical information to the target base station (corresponding to the above-mentioned terminal sending the second performance-related information to the second network device where the target cell is located), and the target base station then sends the performance information statistically collected by itself and the UE to the source base station (corresponding to the above-mentioned obtaining the terminal performance-related information of the terminal corresponding to the first message; sending the terminal performance-related information to the first network device; the terminal performance-related information of the terminal is obtained based on the first performance-related information and the second performance-related information) to help the source base station correct the AI ​​model of the handover (corresponding to the above-mentioned first network device updating the local AI or ML model according to the terminal performance-related information);

[0328] Among them, the UE can also use the statistical information obtained by itself to correct the switching AI model; that is, the UE updates the local AI model.

[0329] Based on the above, the solutions provided by the embodiments of the present disclosure include:

[0330] 1) The terminal reports the handover-related information corresponding to the target cell predicted by the local AI model to the source base station; the source base station determines the final target cell for handover based on the information reported by the terminal and its own AI model.

[0331] 2) Based on 1), the UE records the performance information after switching to the target cell and reports it to the target base station; the target base station sends relevant information to the source base station based on the performance information reported by the UE and its own statistical performance information to optimize the switching AI model of the source base station.

[0332] In summary, the embodiments of the present disclosure provide a method for improving the accuracy of handover, which can make the handover more efficient and more in line with UE requirements.

[0333] The present disclosure also provides a cell switching apparatus, which is applied to a first network device, as shown in FIG4 , and includes:

[0334] A first receiving module 41 is configured to receive first prediction information related to cell handover sent by a terminal;

[0335] A first processing module 42 is configured to select at least one candidate target cell;

[0336] A first sending module 43 is configured to send a first message to the second network device where the selected candidate target cell is located, where the first message is used to initiate a handover request;

[0337] The second sending module 44 is configured to send a second message to the terminal after receiving a response message to the first message sent by the second network device, where the second message is used to instruct the terminal to switch to a target cell among the selected candidate target cells.

[0338] The cell switching device provided by the embodiment of the present disclosure receives first prediction information related to cell switching sent by the terminal; selects at least one candidate target cell; sends a first message to a second network device where the selected candidate target cell is located, the first message being used to initiate a switching request; after receiving a response message to the first message sent by the second network device, sends a second message to the terminal, the second message being used to instruct the terminal to switch to one of the selected candidate target cells; can support the selection of candidate target cells in combination with the terminal's own prediction information, and then perform cell switching, so that factors on the UE side can be more fully considered, switching accuracy can be improved, switching failures can be avoided as much as possible, and the proportion of cell switching failures can be reduced.

[0339] The first prediction information includes: first information corresponding to at least one predicted cell; the first information includes: identification information, cell residence time, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence time within the access beam coverage range, and at least one of the terminal switching time information.

[0340] In the embodiment of the present disclosure, the first prediction information is obtained based on second information; the second information includes: historical motion information.

[0341] The selection of the at least one candidate target cell is performed based on the first prediction information and the candidate target cell information.

[0342] In an embodiment of the present disclosure, the first message carries third information corresponding to at least one selected candidate target cell; wherein the third information includes: cell residence time, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, residence time within the access beam coverage range, and at least one of the terminal access time information.

[0343] The response message carries handover-related information corresponding to at least one candidate target cell; the handover-related information includes: random access resource information, cell radio network temporary identifier C-RNTI, system information, and at least one item of terminal access time information; and / or, the second message carries target cell handover information, and the target cell handover information includes: random access resource information, C-RNTI, system information, and at least one item of terminal access time information.

[0344] In an embodiment of the present disclosure, the terminal access time information carried by the switching related information includes: time information of the terminal accessing the beam; and / or, the terminal access time information carried by the target cell switching information includes: time information of the terminal accessing the beam.

[0345] The selecting of at least one candidate target cell includes: selecting at least one candidate target cell using an AI or ML model.

[0346] Furthermore, the cell switching device also includes: a second receiving module for receiving terminal performance-related information sent by the second network device; wherein the terminal performance-related information includes at least one of the following: uplink data packet delay information; uplink throughput information; actual cell stay time; working time under the access beam; downlink data packet delay information; downlink throughput information.

[0347] In the embodiment of the present disclosure, the cell switching device further includes: a second processing module, configured to update a local AI or ML model based on the terminal performance related information.

[0348] Among them, the implementation embodiments of the cell switching method on the first network device side are all applicable to the embodiments of the cell switching device and can achieve the same technical effects.

[0349] The present disclosure also provides a cell switching apparatus, which is applied to a second network device, as shown in FIG5 , and includes:

[0350] A third receiving module 51 is configured to receive a first message sent by a first network device, where the first message is used to initiate a handover request;

[0351] The third sending module 52 is configured to send a response message to the first message to the first network device.

[0352] The cell switching device provided in the embodiment of the present disclosure receives a first message sent by a first network device, where the first message is used to initiate a switching request; sends a response message to the first message to the first network device; and can support the first network device to select a candidate target cell based on the terminal's own prediction information, and then perform cell switching to fully implement the switching solution; in this way, UE-side factors can be more fully considered, switching accuracy can be improved, switching failures can be avoided as much as possible, and the proportion of cell switching failures can be reduced.

[0353] Furthermore, the cell switching device also includes: a first determination module, used to determine whether the terminal corresponding to the switching request is allowed to access at least one candidate target cell under the second network device before sending a response message of the first message to the first network device, and obtain a determination result; a third processing module, used to obtain a response message to the first message based on the determination result.

[0354] Among them, determining whether the terminal corresponding to the handover request is allowed to access at least one candidate target cell under the second network device to obtain a determination result includes: determining whether the terminal corresponding to the handover request is allowed to access at least one candidate target cell under the second network device according to the handover request to obtain a determination result.

[0355] In an embodiment of the present disclosure, the first message carries third information corresponding to at least one candidate target cell selected by the first network device; wherein the third information includes: cell residence time, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, residence time within the access beam coverage range, and at least one of terminal access time information.

[0356] The response message carries handover related information corresponding to at least one candidate target cell; the handover related information includes at least one of random access resource information, C-RNTI, system information, and terminal access time information.

[0357] In the embodiment of the present disclosure, the terminal access time information carried by the switching related information includes: time information of the terminal accessing the beam.

[0358] Furthermore, the cell switching device also includes: a first acquisition module, used to obtain terminal performance-related information of the terminal corresponding to the first message; a fourth sending module, used to send the terminal performance-related information to the first network device; wherein, the terminal performance-related information includes at least one of the following: uplink data packet delay information; uplink throughput information; actual cell stay time; working time under the access beam; downlink data packet delay information; downlink throughput information.

[0359] Among them, the terminal performance related information of the terminal is obtained, including at least one of the following: statistically obtaining the first performance related information after the terminal accesses the target cell; receiving the second performance related information sent by the terminal; wherein, the first performance related information includes: downlink data packet delay information, downlink throughput information, actual cell residence time, and at least one of the working time under the access beam; the second performance related information includes: uplink data packet delay information, uplink throughput information, actual cell residence time, and at least one of the working time under the access beam.

[0360] In the embodiment of the present disclosure, the terminal performance related information of the terminal is obtained based on the first performance related information and the second performance related information.

[0361] Among them, the implementation embodiments of the cell switching method on the second network device side are all applicable to the embodiments of the cell switching device and can achieve the same technical effects.

[0362] The present disclosure also provides a cell switching device, which is applied to a terminal, as shown in FIG6 , and includes:

[0363] A second acquisition module 61 is configured to acquire first prediction information related to cell handover;

[0364] A fifth sending module 62, configured to send the first prediction information to the first network device;

[0365] A fourth receiving module 63 is configured to receive a second message sent by the first network device, where the second message is used to instruct the terminal to switch to a target cell among the candidate target cells selected by the first network device;

[0366] The fourth processing module 64 is configured to perform a cell handover operation.

[0367] The cell switching device provided by the embodiment of the present disclosure obtains first prediction information related to cell switching; sends the first prediction information to a first network device; receives a second message sent by the first network device, where the second message is used to instruct the terminal to switch to a target cell among the candidate target cells selected by the first network device; performs a cell switching operation; and can support the first network device to select a candidate target cell based on the terminal's own prediction information, and then perform cell switching, so that factors on the UE side can be more fully considered, switching accuracy can be improved, switching failures can be avoided as much as possible, and the proportion of cell switching failures can be reduced.

[0368] The first prediction information includes: first information corresponding to at least one predicted cell; the first information includes: identification information, cell residence time, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence time within the access beam coverage range, and at least one of the terminal switching time information.

[0369] In the embodiment of the present disclosure, the first prediction information is obtained based on second information; the second information includes: historical motion information.

[0370] The second message carries target cell switching information, and the target cell switching information includes at least one of random access resource information, C-RNTI, system information, and terminal access time information.

[0371] In the embodiment of the present disclosure, the terminal access time information carried in the target cell switching information includes: time information of the terminal accessing the beam.

[0372] Wherein, in the case where the target cell switching information includes the terminal access time information, performing the cell switching operation includes: performing the cell switching operation within the time corresponding to the terminal access time information.

[0373] Furthermore, the cell switching device also includes: a fifth processing module, used to statistically obtain second performance-related information after the terminal accesses the target cell; a sixth sending module, used to send the second performance-related information to the second network device where the target cell is located; wherein, the second performance-related information includes: uplink data packet delay information, uplink throughput information, actual cell stay time, and at least one of the working time under the access beam.

[0374] In the embodiment of the present disclosure, performing the cell switching operation includes: performing the cell switching operation according to the second message.

[0375] Among them, the implementation embodiments of the cell switching method on the terminal side are all applicable to the embodiments of the cell switching device and can achieve the same technical effects.

[0376] The embodiment of the present disclosure further provides a cell switching device, which is a first network device, as shown in FIG7 , including: a processor 71 and a transceiver 72;

[0377] The processor 71 is configured to receive, through the transceiver 72, first prediction information related to cell handover sent by the terminal;

[0378] selecting at least one candidate target cell;

[0379] Sending a first message to the second network device where the selected candidate target cell is located through the transceiver 72, where the first message is used to initiate a handover request;

[0380] After receiving the response message to the first message sent by the second network device, a second message is sent to the terminal through the transceiver 72, where the second message is used to instruct the terminal to switch to a target cell among the selected candidate target cells.

[0381] The cell switching device provided by the embodiment of the present disclosure receives first prediction information related to cell switching sent by the terminal; selects at least one candidate target cell; sends a first message to a second network device where the selected candidate target cell is located, and the first message is used to initiate a switching request; after receiving a response message to the first message sent by the second network device, sends a second message to the terminal, and the second message is used to instruct the terminal to switch to one of the selected candidate target cells; can support the selection of candidate target cells in combination with the terminal's own prediction information, and then perform cell switching, so that the factors on the UE side can be more fully considered, the switching accuracy can be improved, the switching failure can be avoided as much as possible, and the proportion of cell switching failures can be reduced.

[0382] The first prediction information includes: first information corresponding to at least one predicted cell; the first information includes: identification information, cell residence time, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence time within the access beam coverage range, and at least one of the terminal switching time information.

[0383] In the embodiment of the present disclosure, the first prediction information is obtained based on second information; the second information includes: historical motion information.

[0384] The selection of the at least one candidate target cell is performed based on the first prediction information and the candidate target cell information.

[0385] In an embodiment of the present disclosure, the first message carries third information corresponding to at least one selected candidate target cell; wherein the third information includes: cell residence time, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, residence time within the access beam coverage range, and at least one of the terminal access time information.

[0386] The response message carries handover-related information corresponding to at least one candidate target cell; the handover-related information includes: random access resource information, cell radio network temporary identifier C-RNTI, system information, and at least one item of terminal access time information; and / or, the second message carries target cell handover information, and the target cell handover information includes: random access resource information, C-RNTI, system information, and at least one item of terminal access time information.

[0387] In an embodiment of the present disclosure, the terminal access time information carried by the switching related information includes: time information of the terminal accessing the beam; and / or, the terminal access time information carried by the target cell switching information includes: time information of the terminal accessing the beam.

[0388] The selecting of at least one candidate target cell includes: selecting at least one candidate target cell using an AI or ML model.

[0389] Furthermore, the processor is also used to: receive terminal performance-related information sent by the second network device through the transceiver; wherein the terminal performance-related information includes at least one of the following: uplink data packet delay information; uplink throughput information; actual cell stay time; working time under the access beam; downlink data packet delay information; downlink throughput information.

[0390] In an embodiment of the present disclosure, the processor is further configured to update a local AI or ML model based on the terminal performance related information.

[0391] Among them, the implementation embodiments of the cell switching method on the first network device side are all applicable to the embodiments of the cell switching device and can achieve the same technical effects.

[0392] The embodiment of the present disclosure further provides a cell switching device, which is a second network device, as shown in FIG8 , including: a processor 81 and a transceiver 82;

[0393] The processor 81 is configured to receive, through the transceiver 82, a first message sent by a first network device, where the first message is used to initiate a handover request;

[0394] A response message to the first message is sent to the first network device via the transceiver 82 .

[0395] The cell switching device provided in the embodiment of the present disclosure receives a first message sent by a first network device, where the first message is used to initiate a switching request; sends a response message to the first message to the first network device; and can support the first network device to select a candidate target cell based on the terminal's own prediction information, and then perform cell switching to fully implement the switching solution; in this way, UE-side factors can be more fully considered, switching accuracy can be improved, switching failures can be avoided as much as possible, and the proportion of cell switching failures can be reduced.

[0396] Furthermore, the processor is also used to: before sending a response message to the first message to the first network device, determine whether the terminal corresponding to the switching request is allowed to access at least one candidate target cell under the second network device, and obtain a determination result; and obtain a response message to the first message based on the determination result.

[0397] Among them, determining whether the terminal corresponding to the handover request is allowed to access at least one candidate target cell under the second network device to obtain a determination result includes: determining whether the terminal corresponding to the handover request is allowed to access at least one candidate target cell under the second network device according to the handover request to obtain a determination result.

[0398] In an embodiment of the present disclosure, the first message carries third information corresponding to at least one candidate target cell selected by the first network device; wherein the third information includes: cell residence time, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, residence time within the access beam coverage range, and at least one of terminal access time information.

[0399] The response message carries handover related information corresponding to at least one candidate target cell; the handover related information includes at least one of random access resource information, C-RNTI, system information, and terminal access time information.

[0400] In the embodiment of the present disclosure, the terminal access time information carried by the switching related information includes: time information of the terminal accessing the beam.

[0401] Furthermore, the processor is also used to: obtain terminal performance-related information of the terminal corresponding to the first message; send the terminal performance-related information to the first network device through the transceiver; wherein the terminal performance-related information includes at least one of the following: uplink data packet delay information; uplink throughput information; actual cell stay time; working time under the access beam; downlink data packet delay information; downlink throughput information.

[0402] Among them, the obtaining of terminal performance related information of the terminal includes at least one of the following: statistically obtaining first performance related information after the terminal accesses the target cell; receiving second performance related information sent by the terminal through the transceiver; wherein, the first performance related information includes: downlink data packet delay information, downlink throughput information, actual cell residence time, and at least one of the working time under the access beam; the second performance related information includes: uplink data packet delay information, uplink throughput information, actual cell residence time, and at least one of the working time under the access beam.

[0403] In the embodiment of the present disclosure, the terminal performance related information of the terminal is obtained based on the first performance related information and the second performance related information.

[0404] Among them, the implementation embodiments of the cell switching method on the second network device side are all applicable to the embodiments of the cell switching device and can achieve the same technical effects.

[0405] The embodiment of the present disclosure further provides a cell switching device, which is a terminal, as shown in FIG9 , including: a processor 91 and a transceiver 92;

[0406] The processor 91 is configured to obtain first prediction information related to cell handover;

[0407] sending the first prediction information to the first network device via the transceiver 92;

[0408] receiving, by the transceiver 92, a second message sent by the first network device, where the second message is used to instruct the terminal to switch to one of the candidate target cells selected by the first network device;

[0409] Perform cell switching operations.

[0410] The cell switching device provided by the embodiment of the present disclosure obtains first prediction information related to cell switching; sends the first prediction information to a first network device; receives a second message sent by the first network device, where the second message is used to instruct the terminal to switch to one of the candidate target cells selected by the first network device; performs a cell switching operation; and can support the first network device to select a candidate target cell based on the terminal's own prediction information, and then perform cell switching, so that factors on the UE side can be more fully considered, switching accuracy can be improved, switching failures can be avoided as much as possible, and the proportion of cell switching failures can be reduced.

[0411] The first prediction information includes: first information corresponding to at least one predicted cell; the first information includes: identification information, cell residence time, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence time within the access beam coverage range, and at least one of the terminal switching time information.

[0412] In the embodiment of the present disclosure, the first prediction information is obtained based on second information; the second information includes: historical motion information.

[0413] The second message carries target cell switching information, and the target cell switching information includes at least one of random access resource information, C-RNTI, system information, and terminal access time information.

[0414] In the embodiment of the present disclosure, the terminal access time information carried in the target cell switching information includes: time information of the terminal accessing the beam.

[0415] Wherein, in the case where the target cell switching information includes the terminal access time information, performing the cell switching operation includes: performing the cell switching operation within the time corresponding to the terminal access time information.

[0416] Furthermore, the processor is also used to: obtain statistically the second performance-related information after the terminal accesses the target cell; send the second performance-related information to the second network device where the target cell is located through the transceiver; wherein the second performance-related information includes: uplink data packet delay information, uplink throughput information, actual cell stay time, and at least one of the working time under the access beam.

[0417] In the embodiment of the present disclosure, performing the cell switching operation includes: performing the cell switching operation according to the second message.

[0418] Among them, the implementation embodiments of the cell switching method on the terminal side are all applicable to the embodiments of the cell switching device and can achieve the same technical effects.

[0419] An embodiment of the present disclosure also provides a cell switching device, including a memory, a processor, and a program stored on the memory and runnable on the processor; when the processor executes the program, the above-mentioned cell switching method on the first network device side, the second network device side, or the terminal side is implemented.

[0420] Among them, the implementation embodiments of the cell switching method on the first network device side, the second network device side or the terminal side are all applicable to the embodiments of the cell switching device and can achieve the same technical effects.

[0421] The embodiment of the present disclosure further provides a readable storage medium having a program stored thereon, which, when executed by a processor, implements the steps in the above-mentioned cell switching method on the first network device side, the second network device side, or the terminal side.

[0422] Among them, the implementation embodiments of the cell switching method on the first network device side, the second network device side or the terminal side are all applicable to the embodiments of the readable storage medium and can achieve the same technical effects.

[0423] An embodiment of the present application provides a computer program product, including computer instructions. When the computer instructions are executed by a processor, the various processes of the cell switching method embodiment on the first network device side, the second network device side or the terminal side described above are implemented, and the same technical effect can be achieved. To avoid repetition, they will not be repeated here.

[0424] It should be noted that many functional components described in this specification are referred to as modules in order to more particularly emphasize the independence of their implementation methods.

[0425] In the disclosed embodiments, modules can be implemented in software so that they can be executed by various types of processors. For example, an identified executable code module can include one or more physical or logical blocks of computer instructions, for example, which can be constructed as objects, procedures, or functions. Nevertheless, the executable code of the identified module does not need to be physically located together, but can include different instructions stored in different locations, which, when logically combined together, constitute the module and achieve the specified purpose of the module.

[0426] In fact, executable code module can be a single instruction or many instructions, and can even be distributed on a plurality of different code segments, distributed in the middle of different programs, and distributed across a plurality of memory devices.Similarly, operating data can be identified in the module, and can be implemented and organized in the data structure of any appropriate type according to any appropriate form.Described operating data can be collected as a single data set, or can be distributed in different locations (including on different storage devices), and can only be present on a system or network as an electronic signal at least in part.

[0427] When a module can be implemented using software, taking into account the current state of hardware technology, those skilled in the art can build corresponding hardware circuits to implement the corresponding functions of the module that can be implemented using software, without considering the cost. The hardware circuits include conventional very large scale integration (VLSI) circuits or gate arrays, as well as existing semiconductors such as logic chips and transistors, or other discrete components. The module can also be implemented using programmable hardware devices, such as field programmable gate arrays, programmable array logic, programmable logic devices, etc.

[0428] The above is a preferred embodiment of the present disclosure. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles described in the present disclosure. These improvements and modifications should also be regarded as within the scope of protection of the present disclosure.

Claims

1. A cell handover method, applied to a first network device, the method comprising: Receiving first prediction information related to cell handover sent by a terminal; Selecting at least one candidate target cell; Sending a first message to a second network device where the selected candidate target cell is located, the first message being used to initiate a handover request; After receiving a response message of the first message sent by the second network device, sending a second message to the terminal, the second message being used to instruct the terminal to hand over to one of the selected candidate target cells.

2. The cell handover method according to claim 1, wherein, The first prediction information includes: first information corresponding to at least one predicted cell; Wherein, the first information includes at least one of: identification information, cell residence duration, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence duration within the coverage of the access beam, and terminal handover time information.

3. The cell handover method according to claim 1, wherein, The first prediction information is obtained according to second information; The second information includes: historical movement information.

4. The cell handover method according to claim 1, wherein The selection of the at least one candidate target cell is performed according to the first prediction information and candidate target cell information.

5. The cell handover method according to claim 1, wherein, The first message carries third information corresponding to the at least one selected candidate target cell; Wherein, the third information includes at least one of: cell residence duration, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence duration within the coverage of the access beam, and terminal access time information.

6. The cell handover method according to claim 1, wherein The response message carries handover-related information corresponding to the at least one candidate target cell; the handover-related information includes at least one of: random access resource information, cell radio network temporary identity C-RNTI, system information, and terminal access time information; And / or, the second message carries target cell handover information, the target cell handover information includes at least one of: random access resource information, C-RNTI, system information, and terminal access time information.

7. The cell handover method according to claim 6, wherein, The terminal access time information carried in the handover-related information includes: time information of the terminal accessing the beam; And / or, the terminal access time information carried in the target cell handover information includes: time information of the terminal accessing the beam.

8. The cell handover method according to any one of claims 1 to 7, wherein, The selecting at least one candidate target cell includes: Using an artificial intelligence AI or machine learning ML model to select at least one candidate target cell.

9. The cell handover method according to claim 1, further comprising: Receiving terminal performance-related information sent by the second network device; Wherein, the terminal performance-related information includes at least one of the following: Uplink packet delay information; Uplink throughput information; Actual cell residence duration; Operating duration under the access beam; Downlink packet delay information; Downlink throughput information.

10. The cell handover method according to claim 9, further comprising: Updating the local AI or ML model according to the terminal performance-related information.

11. A cell handover method, applied to a second network device, the method comprising: Receive a first message sent by a first network device, where the first message is used to initiate a handover request; Send a response message to the first message to the first network device.

12. The cell handover method according to claim 11, wherein, Before sending the response message to the first message to the first network device, it further includes: Determine whether to allow the terminal corresponding to the handover request to access at least one candidate target cell under the second network device, and obtain a determination result; According to the determination result, obtain a response message to the first message.

13. The cell handover method according to claim 12, wherein, The determining whether to allow the terminal corresponding to the handover request to access at least one candidate target cell under the second network device and obtaining a determination result includes: According to the handover request, determine whether to allow the terminal corresponding to the handover request to access at least one candidate target cell under the second network device, and obtain a determination result.

14. The cell handover method according to claim 11, wherein, The first message carries third information corresponding to at least one candidate target cell selected by the first network device; Wherein, the third information includes at least one of: cell residence duration, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, residence duration within the coverage range of the access beam, and terminal access time information.

15. The cell handover method according to claim 11, wherein, The response message carries handover-related information corresponding to at least one candidate target cell; the handover-related information includes at least one of: random access resource information, C-RNTI, system information, and terminal access time information.

16. The cell handover method according to claim 15, wherein, The terminal access time information carried by the handover-related information includes: time information of the terminal accessing the beam.

17. The cell handover method according to claim 11, further includes: Obtain terminal performance-related information of the terminal corresponding to the first message; Send the terminal performance-related information to the first network device; Wherein, the terminal performance-related information includes at least one of the following: Uplink packet delay information; Uplink throughput information; Actual cell residence duration; Working duration under the access beam; Downlink packet delay information; Downlink throughput information.

18. The cell handover method according to claim 17, wherein, The obtaining the terminal performance-related information of the terminal includes at least one of the following: Statistically obtain first performance-related information after the terminal accesses the target cell; Receive second performance-related information sent by the terminal; Wherein, the first performance-related information includes at least one of: downlink packet delay information, downlink throughput information, actual cell residence duration, and working duration under the access beam; The second performance-related information includes at least one of: uplink packet delay information, uplink throughput information, actual cell residence duration, and working duration under the access beam.

19. The cell handover method according to claim 18, wherein, The terminal performance-related information of the terminal is obtained based on the first performance-related information and the second performance-related information.

20. A cell handover method, applied to a terminal, the method includes: Obtain first prediction information related to cell handover; Send the first prediction information to a first network device; Receive a second message sent by the first network device, where the second message is used to instruct the terminal to switch to a target cell among the candidate target cells selected by the first network device; Perform a cell handover operation.

21. The cell handover method according to claim 20, wherein, The first prediction information includes: first information corresponding to at least one predicted cell; Wherein, the first information includes at least one of: identification information, cell residence duration, cell access probability, access beam identification or synchronization signal block identification or channel state information reference signal identification, residence duration within the coverage range of the access beam, and terminal handover time information.

22. The cell handover method according to claim 21, wherein, The first prediction information is obtained according to second information; The second information includes: historical movement information.

23. The cell handover method according to claim 20, wherein, The second message carries target cell handover information, and the target cell handover information includes at least one of: random access resource information, C-RNTI, system information, and terminal access time information.

24. The cell handover method according to claim 23, wherein, The terminal access time information carried in the target cell handover information includes: time information of the terminal accessing the access beam.

25. The cell handover method according to claim 23 or 24, wherein, When the target cell handover information includes the terminal access time information, the performing of the cell handover operation includes: Performing a cell handover operation within the time corresponding to the terminal access time information.

26. The cell handover method according to claim 20, further comprising: Statistically obtaining second performance-related information after the terminal accesses the target cell; Sending the second performance-related information to a second network device where the target cell is located; Wherein, the second performance-related information includes at least one of: uplink packet delay information, uplink throughput information, actual cell residence duration, and working duration under the access beam.

27. The cell handover method according to claim 20, wherein, The performing of the cell handover operation includes: Performing a cell handover operation according to the second message.

28. A cell handover device, applied to a first network device, the cell handover device includes: A first receiving module, configured to receive first prediction information related to cell handover sent by a terminal; A first processing module, configured to select at least one candidate target cell; A first sending module, configured to send a first message to a second network device where the selected candidate target cell is located, the first message being used to initiate a handover request; A second sending module, configured to send a second message to the terminal after receiving a response message of the first message sent by the second network device, the second message being used to instruct the terminal to switch to one of the candidate target cells selected by the first network device.

29. A cell handover device, applied to a second network device, the cell handover device includes: A third receiving module, configured to receive a first message sent by a first network device, the first message being used to initiate a handover request; A third sending module, configured to send a response message of the first message to the first network device.

30. A cell handover device, applied to a terminal, the cell handover device includes: A second obtaining module, configured to obtain first prediction information related to cell handover; A fifth sending module, configured to send the first prediction information to a first network device; A fourth receiving module, configured to receive a second message sent by the first network device, the second message being used to instruct the terminal to switch to one of the candidate target cells selected by the first network device; A fourth processing module, configured to perform a cell handover operation.

31. A cell handover device, the cell handover device being a first network device, comprising: A processor and a transceiver; The processor is configured to receive, via the transceiver, first prediction information related to cell handover sent by a terminal; select at least one candidate target cell; send, via the transceiver, a first message to a second network device where the selected candidate target cell is located, the first message being used to initiate a handover request; after receiving a response message of the first message sent by the second network device, send, via the transceiver, a second message to the terminal, the second message being used to instruct the terminal to hand over to a target cell among the selected candidate target cells.

32. A cell handover device, the cell handover device being a second network device, comprising: A processor and a transceiver; The processor is configured to receive, via the transceiver, a first message sent by a first network device, the first message being used to initiate a handover request; send, via the transceiver, a response message of the first message to the first network device.

33. A cell handover device, where the cell handover device is a terminal, and includes: A processor and a transceiver; The processor is configured to obtain first prediction information related to cell handover; send, via the transceiver, the first prediction information to a first network device; receive, via the transceiver, a second message sent by the first network device, the second message being used to instruct the terminal to hand over to a target cell among candidate target cells selected by the first network device; perform a cell handover operation.

34. A cell handover device, comprising a memory, a processor, and a program stored on the memory and executable on the processor; when the processor executes the program, the cell handover method according to any one of claims 1 to 27 is implemented.

35. A readable storage medium, on which a program is stored, and when the program is executed by a processor, the steps in the cell handover method according to any one of claims 1 to 27 are implemented.

36. A computer program product, comprising computer instructions, and when the computer instructions are executed by a processor, the steps in the method according to any one of claims 1 to 27 are implemented.

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