Cell switching method, device and equipment

Abstract

The invention provides a cell switching method, device and equipment, and the method comprises the steps: receiving first prediction information which is transmitted by a terminal and is related to cell switching; selecting at least one candidate target cell; sending a first message to a second network device where the selected candidate target cell is located, wherein the first message is used for initiating a switching request; and after a response message of the first message sent by the second network device is received, a second message is sent to the terminal, and the second message is used for indicating the terminal to switch to one target cell in the selected candidate target cells. According to the scheme, the candidate target cells can be selected in combination with the prediction information of the terminal, and then the cells are switched, so that the factors of the UE side can be more fully considered, the switching accuracy is improved, the switching failure is avoided as much as possible, and the proportion of the cell switching failure is reduced.

Description

Technical Field

[0001] The present invention relates to the field of communication technologies, and in particular, to a cell handover method, apparatus, and device. Background Art

[0002] Currently, artificial intelligence (AI) or machine learning (ML) technologies have been introduced into some important scenarios in the field of mobile communications (such as network energy saving, load balancing, and mobility optimization), enabling the analysis and automatic processing of a large amount of collected data to output corresponding predictions or policies, thereby helping to handle complex problems that are difficult to model and better improving network management and user experience. Specifically, for example, the scenarios where AI technology works in the radio access network and high-layer fields: AI or ML model training and management are performed on the collected data, and prediction results or inference policies are formed using the AI or ML model. After the policies are executed, performance parameters related to the UE (terminal) or the base station are input for AI model training, thereby helping to correct the AI model to make it more reasonable.

[0003] Among them, in the mobility management mechanism in the connected state, the base station determines the candidate target cell for UE handover based on information such as the measurement results reported by the UE and the load of the target cell, negotiates with the target cell for the relevant resources to be used by the UE after handover to access the target cell, and then instructs the UE to perform the handover.

[0004] However, the handover in the prior art is dominated by the source base station, including the handover timing and the selection of the target cell for handover. Therefore, the factors on the UE side that can be considered in the handover are relatively limited, which may lead to inaccurate determination of the handover timing and target cell by the source base station based on the measurement results reported by the UE (such as not conforming to the actual situation of the UE's movement trajectory), and may further lead to handover failure.

[0005] Therefore, there are problems such as a certain proportion of handover failures in the cell handover solutions in the prior art. Summary of the Invention

[0006] The purpose of the present invention is to provide a cell handover method, apparatus, and device to solve the problem of a certain proportion of handover failures in the cell handover solutions in the prior art.

[0007] To solve the above technical problems, an embodiment of the present invention provides a cell handover method, which is applied to a first network device and includes:

[0008] Receive the first prediction information related to cell handover sent by the receiving terminal;

[0009] Select at least one candidate target cell;

[0010] 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;

[0011] After receiving a response message to the first message sent by the second network device, send 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.

[0012] Optionally, the first prediction information includes: first information corresponding to at least one predicted cell;

[0013] 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.

[0014] Optionally, the first prediction information is obtained according to second information; the second information includes: historical movement information.

[0015] Optionally, the selection of the at least one candidate target cell is performed according to the first prediction information and candidate target cell information.

[0016] Optionally, the first message carries third information corresponding to the at least one selected candidate target cell;

[0017] 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.

[0018] Optionally, 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;

[0019] 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.

[0020] Optionally, the terminal access time information carried in the handover-related information includes: the time information of the terminal accessing the beam;

[0021] And / or, the terminal access time information carried in the target cell handover information includes: the time information of the terminal accessing the beam.

[0022] Optionally, the selection of at least one candidate target cell includes:

[0023] Selecting at least one candidate target cell by using an AI or ML model.

[0024] Optionally, it further includes:

[0025] Receiving terminal performance-related information sent by the second network device;

[0026] Wherein, the terminal performance-related information includes at least one of the following:

[0027] Uplink packet delay information;

[0028] Uplink throughput information;

[0029] Actual cell residence duration;

[0030] Duration of working under the access beam;

[0031] Downlink packet delay information;

[0032] Downlink throughput information.

[0033] Optionally, it further includes:

[0034] Updating the local AI or ML model according to the terminal performance-related information.

[0035] An embodiment of the present invention further provides a cell handover method, which is applied to a second network device and includes:

[0036] Receiving a first message sent by a first network device, where the first message is used to initiate a handover request;

[0037] Sending a response message to the first message to the first network device.

[0038] Optionally, before sending the response message to the first message to the first network device, it further includes:

[0039] 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;

[0040] Obtaining a response message to the first message according to the determination result.

[0041] Optionally, 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:

[0042] 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 to obtain a determination result.

[0043] Optionally, the first message carries third information corresponding to at least one candidate target cell selected by the first network device;

[0044] 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 of the access beam, and terminal access time information.

[0045] 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, C-RNTI, system information, and terminal access time information.

[0046] Optionally, the terminal access time information carried by the handover-related information includes: time information of the terminal accessing the beam.

[0047] Optionally, it further includes:

[0048] Obtain terminal performance-related information of the terminal corresponding to the first message;

[0049] Send the terminal performance-related information to the first network device;

[0050] Wherein, the terminal performance-related information includes at least one of the following:

[0051] Uplink packet delay information;

[0052] Uplink throughput information;

[0053] Actual cell residence duration;

[0054] Working duration under the access beam;

[0055] Downlink packet delay information;

[0056] Downlink throughput information.

[0057] Optionally, obtaining the terminal performance-related information of the terminal includes at least one of the following:

[0058] Statistically obtain first performance-related information after the terminal accesses the target cell;

[0059] Receive the second performance-related information sent by the receiving terminal;

[0060] Wherein, the first performance-related information includes at least one of: downlink data packet delay information, downlink throughput information, actual cell residence duration, and working duration under the access beam;

[0061] The second performance-related information includes at least one of: uplink data packet delay information, uplink throughput information, actual cell residence duration, and working duration under the access beam.

[0062] Optionally, the terminal performance-related information of the terminal is obtained based on the first performance-related information and the second performance-related information.

[0063] An embodiment of the present invention further provides a cell handover method, which is applied to a terminal and includes:

[0064] Obtain first prediction information related to cell handover;

[0065] Send the first prediction information to a first network device;

[0066] Receive 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;

[0067] Perform a cell handover operation.

[0068] Optionally, the first prediction information includes: first information corresponding to at least one predicted cell;

[0069] 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.

[0070] Optionally, the first prediction information is obtained based on second information; the second information includes: historical movement information.

[0071] Optionally, 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.

[0072] Optionally, the terminal access time information carried by the target cell handover information includes: time information of the terminal access beam.

[0073] Optionally, when the target cell handover information includes the terminal access time information, the performing the cell handover operation includes:

[0074] Performing a cell handover operation within the time corresponding to the terminal access time information.

[0075] Optionally, it further includes:

[0076] Statistically obtaining second performance-related information after the terminal accesses the target cell;

[0077] Sending the second performance-related information to a second network device where the target cell is located;

[0078] 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.

[0079] Optionally, the performing the cell handover operation includes:

[0080] Performing a cell handover operation according to the second message.

[0081] An embodiment of the present invention further provides a cell handover device, which is applied to a first network device and includes:

[0082] A first receiving module, configured to receive first prediction information related to cell handover sent by a terminal;

[0083] A first processing module, configured to select at least one candidate target cell;

[0084] A first sending module, configured to send 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 handover request;

[0085] 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, and the second message is used to instruct the terminal to switch to one of the selected candidate target cells.

[0086] Optionally, the first prediction information includes: first information corresponding to at least one predicted cell;

[0087] 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.

[0088] Optionally, the first prediction information is obtained based on second information; the second information includes: historical movement information.

[0089] Optionally, the selection of the at least one candidate target cell is performed according to the first prediction information and candidate target cell information.

[0090] Optionally, the first message carries third information corresponding to the at least one selected candidate target cell;

[0091] 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 of the access beam, and terminal access time information.

[0092] Optionally, 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 identifier C-RNTI, system information, and terminal access time information;

[0093] And / or, 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.

[0094] Optionally, the terminal access time information carried by the handover-related information includes: time information of the terminal accessing the beam;

[0095] And / or, the terminal access time information carried by the target cell handover information includes: time information of the terminal accessing the beam.

[0096] Optionally, the selection of the at least one candidate target cell includes:

[0097] Using an AI or ML model to select at least one candidate target cell.

[0098] Optionally, it further includes:

[0099] A second receiving module, configured to receive terminal performance-related information sent by the second network device;

[0100] wherein the terminal performance-related information includes at least one of the following:

[0101] Uplink packet delay information;

[0102] Uplink throughput information;

[0103] Actual cell residence duration;

[0104] Duration of working under the access beam;

[0105] Downlink data packet delay information;

[0106] Downlink throughput information.

[0107] Optionally, it further includes:

[0108] A second processing module, configured to update the local AI or ML model according to the terminal performance-related information.

[0109] An embodiment of the present invention further provides a cell handover device, which is applied to a second network device and includes:

[0110] A third receiving module, configured to receive a first message sent by a first network device, where the first message is used to initiate a handover request;

[0111] A third sending module, configured to send a response message of the first message to the first network device.

[0112] Optionally, it further includes:

[0113] A first determination module, configured to determine whether to allow the terminal corresponding to the handover request to access at least one candidate target cell under the second network device before sending the response message of the first message to the first network device, to obtain a determination result;

[0114] A third processing module, configured to obtain a response message of the first message according to the determination result.

[0115] 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 and obtaining a determination result includes:

[0116] 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, to obtain a determination result.

[0117] Optionally, the first message carries third information corresponding to at least one candidate target cell selected by the first network device;

[0118] 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.

[0119] 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, C-RNTI, system information, and terminal access time information.

[0120] Optionally, the terminal access time information carried by the handover-related information includes time information of the terminal accessing a beam.

[0121] Optionally, it further includes:

[0122] A first obtaining module, configured to obtain terminal performance-related information of a terminal corresponding to the first message;

[0123] A fourth sending module, configured to send the terminal performance-related information to the first network device;

[0124] Wherein, the terminal performance-related information includes at least one of the following:

[0125] Uplink packet delay information;

[0126] Uplink throughput information;

[0127] Actual cell residence duration;

[0128] Duration of working under an access beam;

[0129] Downlink packet delay information;

[0130] Downlink throughput information.

[0131] Optionally, obtaining the terminal performance-related information of the terminal includes at least one of the following:

[0132] Statistically obtaining first performance-related information after the terminal accesses the target cell;

[0133] Receiving second performance-related information sent by the terminal;

[0134] Wherein, the first performance-related information includes at least one of downlink packet delay information, downlink throughput information, actual cell residence duration, and duration of working under an access beam;

[0135] The second performance-related information includes at least one of uplink packet delay information, uplink throughput information, actual cell residence duration, and duration of working under an access beam.

[0136] Optionally, the terminal performance-related information of the terminal is obtained based on the first performance-related information and the second performance-related information.

[0137] An embodiment of the present invention further provides a cell handover device, which is applied to a terminal and includes:

[0138] A second acquisition module, configured to acquire first prediction information related to cell handover;

[0139] A fifth sending module, configured to send the first prediction information to a first network device;

[0140] A fourth receiving module, 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 candidate target cells selected by the first network device;

[0141] A fourth processing module, configured to perform a cell handover operation.

[0142] Optionally, the first prediction information includes: first information corresponding to at least one predicted cell;

[0143] 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.

[0144] Optionally, the first prediction information is obtained according to second information; the second information includes: historical movement information.

[0145] Optionally, 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.

[0146] Optionally, the terminal access time information carried in the target cell handover information includes: time information of the terminal accessing the beam.

[0147] Optionally, when the target cell handover information includes the terminal access time information, the performing the cell handover operation includes:

[0148] Performing a cell handover operation within the time corresponding to the terminal access time information.

[0149] Optionally, it further includes:

[0150] A fifth processing module, configured to statistically obtain second performance-related information after the terminal accesses the target cell;

[0151] A sixth sending module, configured to send the second performance-related information to a second network device where the target cell is located;

[0152] Among them, the second performance-related information includes at least one of the following: uplink data packet delay information, uplink throughput information, actual cell residence duration, and working duration under the access beam.

[0153] Optionally, the performing of the cell handover operation includes:

[0154] Performing a cell handover operation according to the second message.

[0155] An embodiment of the present invention further provides a cell handover device, which is a first network device and includes a processor and a transceiver;

[0156] The processor is configured to receive, through the transceiver, first prediction information related to cell handover sent by a terminal;

[0157] Select at least one candidate target cell;

[0158] Through the transceiver, send 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 handover request;

[0159] After receiving a response message of the first message sent by the second network device, send a second message to the terminal through the transceiver, and the second message is used to instruct the terminal to switch to one of the selected candidate target cells.

[0160] Optionally, the first prediction information includes first information corresponding to at least one predicted cell;

[0161] Among them, the first information includes at least one of the following: 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.

[0162] Optionally, the first prediction information is obtained according to second information; the second information includes historical movement information.

[0163] Optionally, the selection of the at least one candidate target cell is performed according to the first prediction information and candidate target cell information.

[0164] Optionally, the first message carries third information corresponding to at least one of the selected candidate target cells;

[0165] Among them, the third information includes at least one of the following: 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.

[0166] Optionally, the response message carries at least one piece of handover-related information corresponding to the 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;

[0167] And / or, the second message carries target cell handover information, where the target cell handover information includes at least one of random access resource information, C-RNTI, system information, and terminal access time information.

[0168] Optionally, the terminal access time information carried by the handover-related information includes: time information of the terminal accessing the beam;

[0169] And / or, the terminal access time information carried by the target cell handover information includes: time information of the terminal accessing the beam.

[0170] Optionally, the selecting at least one candidate target cell includes:

[0171] Using an AI or ML model to select at least one candidate target cell.

[0172] Optionally, the processor is further configured to:

[0173] Receive terminal performance-related information sent by the second network device through the transceiver;

[0174] Wherein, the terminal performance-related information includes at least one of the following:

[0175] Uplink packet delay information;

[0176] Uplink throughput information;

[0177] Actual cell residence duration;

[0178] Duration of working under the access beam;

[0179] Downlink packet delay information;

[0180] Downlink throughput information.

[0181] Optionally, the processor is further configured to:

[0182] Update the local AI or ML model according to the terminal performance-related information.

[0183] An embodiment of the present invention further provides a cell handover device, where the cell handover device is a second network device, including: a processor and a transceiver;

[0184] The processor is configured to receive, via the transceiver, a first message sent by a first network device, where the first message is used to initiate a handover request;

[0185] Via the transceiver, send a response message to the first network device for the first message.

[0186] Optionally, the processor is further configured to:

[0187] Before sending the response message for the first message to the first network device, determine 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;

[0188] Based on the determination result, obtain the response message for the first message.

[0189] 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:

[0190] Based on 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, to obtain a determination result.

[0191] Optionally, the first message carries third information corresponding to at least one candidate target cell selected by the first network device;

[0192] 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 of the access beam, and terminal access time information.

[0193] 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, C-RNTI, system information, and terminal access time information.

[0194] Optionally, the terminal access time information carried in the handover-related information includes: time information of the terminal accessing the beam.

[0195] Optionally, the processor is further configured to:

[0196] Obtain terminal performance-related information of the terminal corresponding to the first message;

[0197] Via the transceiver, send the terminal performance-related information to the first network device;

[0198] Wherein, the terminal performance-related information includes at least one of the following:

[0199] Uplink data packet delay information;

[0200] Uplink throughput information;

[0201] Actual cell residence duration;

[0202] Operating duration under the access beam;

[0203] Downlink data packet delay information;

[0204] Downlink throughput information.

[0205] Optionally, obtaining the terminal performance-related information of the terminal includes at least one of the following:

[0206] Statistically obtaining the first performance-related information after the terminal accesses the target cell;

[0207] Receiving, through the transceiver, second performance-related information sent by the terminal;

[0208] Wherein, the first performance-related information includes at least one of: downlink data packet delay information, downlink throughput information, actual cell residence duration, and operating duration under the access beam;

[0209] The second performance-related information includes at least one of: uplink data packet delay information, uplink throughput information, actual cell residence duration, and operating duration under the access beam.

[0210] Optionally, the terminal performance-related information of the terminal is obtained based on the first performance-related information and the second performance-related information.

[0211] An embodiment of the present invention further provides a cell handover device, where the cell handover device is a terminal, including: a processor and a transceiver;

[0212] The processor is configured to obtain first prediction information related to cell handover;

[0213] Send the first prediction information to a first network device through the transceiver;

[0214] Receive, through 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;

[0215] Perform a cell handover operation.

[0216] Optionally, the first prediction information includes: first information corresponding to at least one predicted cell;

[0217] 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.

[0218] Optionally, the first prediction information is obtained based on the second information; the second information includes historical movement information.

[0219] Optionally, 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.

[0220] Optionally, the terminal access time information carried by the target cell handover information includes the time information of the terminal accessing the beam.

[0221] Optionally, when the target cell handover information includes the terminal access time information, performing the cell handover operation includes:

[0222] Performing the cell handover operation within the time corresponding to the terminal access time information.

[0223] Optionally, the processor is further configured to:

[0224] Statistically obtain second performance-related information after the terminal accesses the target cell;

[0225] Send the second performance-related information to a second network device where the target cell is located through the transceiver;

[0226] 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.

[0227] Optionally, performing the cell handover operation includes:

[0228] Performing the cell handover operation according to the second message.

[0229] An embodiment of the present invention further provides a cell handover device, including a memory, a processor, and a program stored on the memory and executable on the processor; when the processor executes the program, it implements the cell handover method on the first network device side, the second network device side, or the terminal side as described above.

[0230] An embodiment of the present invention further provides a readable storage medium, on which a program is stored, and when the program is executed by a processor, it implements the steps in the cell handover method on the first network device side, the second network device side, or the terminal side as described above.

[0231] The beneficial effects of the above technical solutions of the present invention are as follows:

[0232] In the above solution, the cell handover method receives first prediction information related to cell handover sent by a 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 handover request; after receiving a response message of 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 hand over to one of the selected candidate target cells; it can support the selection of candidate target cells by combining the prediction information of the terminal itself, and then perform cell handover, so that factors on the UE side can be more fully considered, the handover accuracy can be improved, handover failures can be avoided as much as possible, and the proportion of cell handover failures can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0233] Figure 1 It is a schematic flowchart of the cell handover method according to an embodiment of the present invention Figure 1 ;

[0234] Figure 2 It is a schematic flowchart of the cell handover method according to an embodiment of the present invention Figure 2 ;

[0235] Figure 3 It is a schematic flowchart of the cell handover method according to an embodiment of the present invention Figure 3 ;

[0236] Figure 4 It is a schematic structural diagram of the cell handover device according to an embodiment of the present invention Figure 1 ;

[0237] Figure 5 It is a schematic structural diagram of the cell handover device according to an embodiment of the present invention Figure 2 ;

[0238] Figure 6 It is a schematic structural diagram of the cell handover device according to an embodiment of the present invention Figure 3 ;

[0239] Figure 7 It is a schematic structural diagram of the cell handover device according to an embodiment of the present invention Figure 1 ;

[0240] Figure 8 It is a schematic structural diagram of the cell handover device according to an embodiment of the present invention Figure 2 ;

[0241] Figure 9 It is a schematic structural diagram of the cell handover device according to an embodiment of the present invention Figure 3 . DETAILED DESCRIPTION OF THE INVENTION

[0242] To make the technical problems, technical solutions, and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0243] In view of the problem that there is a certain proportion of handover failures in the existing cell handover scheme in the prior art, the present invention provides a cell handover method, which is applied to a first network device, such as Figure 1 as shown, including:

[0244] Step 11: Receive first prediction information related to cell handover sent by a terminal;

[0245] Step 12: Select at least one candidate target cell;

[0246] Step 13: Send 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 handover request;

[0247] Step 14: After receiving a response message of the first message sent by the second network device, send a second message to the terminal, and the second message is used to instruct the terminal to switch to a target cell among the selected candidate target cells.

[0248] Among them, the first network device can be implemented as a source base station, and the second network device can be implemented as a target base station, but it is not limited thereto.

[0249] The cell handover method provided by the embodiment of the present invention receives first prediction information related to cell handover sent by a 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 handover request; after receiving a response message of 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 a target cell among the selected candidate target cells; it can support the selection of candidate target cells by combining the prediction information of the terminal itself, and then perform cell handover, so that the factors on the UE side can be more fully considered, the handover accuracy can be improved, handover failures can be avoided as much as possible, and the proportion of cell handover failures can be reduced.

[0250] Among them, the first prediction information includes: first information corresponding to at least one predicted cell; among them, the first information includes at least one of identification information, 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 handover time information.

[0251] This can support the first network device to more accurately select candidate target cells; among them, the terminal handover time information can be time point information or time period information; in addition, it can be embodied as absolute time information or relative time information (such as absolute time: 10 am or 10:00 - 10:02 am, or relative time: 100 ms later or between 100 ms - 10,000 ms;)

[0252] In an embodiment of the present invention, the first prediction information is obtained according to the second information; the second information includes: historical movement information.

[0253] This can ensure the accuracy of the first prediction information. Among them, the historical movement information can include: historical movement direction, speed, etc.

[0254] Among them, the selection of the at least one candidate target cell is performed according to the first prediction information and the candidate target cell information.

[0255] This can improve the accuracy of the candidate target cell selection. Among them, the candidate target cell information may include: the load information of the candidate target cell, but is not limited thereto.

[0256] In an embodiment of the present invention, the first message carries the third information corresponding to the at least one selected candidate target cell; among them, 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 access beam coverage range, and terminal access time information.

[0257] This can support the second network device to accurately determine the relevant candidate target cells. Among them, the terminal access time information can include the absolute time or relative time when the terminal accesses the cell, which is not limited herein.

[0258] Among them, the response message carries the 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 identifier C-RNTI, system information, and terminal access time information; and / or, 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.

[0259] This can ensure the accurate determination and access of the target cell. Among them, the system information can include: system information blocks SIB1 and / or SIB2, etc., such as the system information required for the UE to access the cell, which is not limited herein.

[0260] In the embodiments of the present invention, the terminal access time information carried by the handover-related information includes: the time information of the terminal accessing the beam; and / or, the terminal access time information carried by the target cell handover information includes: the time information of the terminal accessing the beam.

[0261] In this way, the relevant time information of the access beam can be clarified.

[0262] Among them, the selection of at least one candidate target cell includes: using an AI or ML model to select at least one candidate target cell.

[0263] In this way, the network management performance and user experience can be improved.

[0264] Furthermore, the cell handover method further includes: receiving terminal performance-related information sent by the second network device; where 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.

[0265] In this way, the first network device can accurately obtain the relevant performance information after the terminal accesses the target cell.

[0266] In the embodiments of the present invention, the cell handover method further includes: updating the local AI or ML model according to the terminal performance-related information.

[0267] In this way, the accuracy of the model can be improved.

[0268] The embodiments of the present invention also provide a cell handover method applied to a second network device, as Figure 2 shown, including:

[0269] Step 21: Receive a first message sent by a first network device, where the first message is used to initiate a handover request;

[0270] Step 22: Send a response message to the first network device for the first message.

[0271] The cell handover method provided by the embodiments of the present invention can support the first network device to select candidate target cells in combination with the prediction information of the terminal itself by receiving a first message sent by the first network device, where the first message is used to initiate a handover request; and sending a response message to the first network device for the first message, and then perform cell handover, so as to completely implement the handover scheme; in this way, the factors on the UE side can be considered more fully, the handover accuracy can be improved, handover failures can be avoided as much as possible, and the proportion of cell handover failures can be reduced.

[0272] Further, before sending a response message to the first network device for the first message, the method further includes: 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; and obtaining a response message to the first message according to the determination result.

[0273] In this way, the response corresponding to the handover request can be accurately obtained.

[0274] Among them, 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: determining whether to allow the terminal corresponding to the handover request to access at least one candidate target cell under the second network device according to the handover request to obtain a determination result.

[0275] In this way, the above determination result can be accurately obtained.

[0276] In an embodiment of the present invention, 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.

[0277] In this way, the second network device can be assisted in accurately determining relevant candidate target cells.

[0278] Among them, 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.

[0279] In this way, the accurate determination of the target cell can be ensured.

[0280] In an embodiment of the present invention, the terminal access time information carried by the handover-related information includes: time information of the terminal accessing the beam.

[0281] In this way, the relevant time information of the access beam can be clarified.

[0282] Further, the cell handover method further includes: obtaining terminal performance-related information of the terminal corresponding to the first message; and 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 packet delay information; uplink throughput information; actual cell residence duration; working duration under the access beam; downlink packet delay information; downlink throughput information.

[0283] This enables the first network device to accurately obtain the relevant performance information after the terminal accesses the target cell.

[0284] Among them, obtaining the terminal performance-related information of the terminal includes 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; where the first performance-related information includes at least one of the following: 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 the following: uplink packet delay information, uplink throughput information, actual cell residence duration, and working duration under the access beam.

[0285] This can accurately obtain the terminal performance-related information of the terminal.

[0286] In the embodiment of the present invention, the terminal performance-related information of the terminal is obtained based on the first performance-related information and the second performance-related information.

[0287] This can improve the accuracy of the terminal performance-related information.

[0288] The embodiment of the present invention also provides a cell handover method applied to a terminal, as Figure 3 shown, including:

[0289] Step 31: Obtain the first prediction information related to cell handover;

[0290] Step 32: Send the first prediction information to the first network device;

[0291] Step 33: Receive the 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;

[0292] Step 34: Perform a cell handover operation.

[0293] Among them, step 34 may include: performing a cell handover or accessing the target cell, which is not limited here.

[0294] The cell handover method provided by the embodiments of the present invention obtains first prediction information related to cell handover; 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 hand over to one of the candidate target cells selected by the first network device; and performs a cell handover operation. It can support the first network device to select candidate target cells in combination with the terminal's own prediction information and then perform cell handover, which can more fully consider the factors on the UE side, improve the handover accuracy, avoid handover failures as much as possible, and reduce the proportion of cell handover failures.

[0295] Among them, the first prediction information includes: first information corresponding to at least one predicted cell; where 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.

[0296] This can support the first network device to more accurately select candidate target cells.

[0297] In the embodiments of the present invention, the first prediction information is obtained according to second information; the second information includes: historical movement information.

[0298] This can ensure the accuracy of the first prediction information.

[0299] Among them, 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.

[0300] This can ensure the accurate access to the target cell.

[0301] In the embodiments of the present invention, the terminal access time information carried in the target cell handover information includes: time information of the terminal accessing the beam.

[0302] This can clarify the relevant time information of the access beam.

[0303] Among them, when the target cell handover information includes the terminal access time information, the performing of the cell handover operation includes: performing the cell handover operation within the time corresponding to the terminal access time information.

[0304] This can ensure the successful execution of the cell handover operation as much as possible.

[0305] Further, the cell handover method further includes: 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; where 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.

[0306] This can support the second network device to accurately obtain the performance-related information statistically obtained by the terminal.

[0307] Among them, performing the cell handover operation includes: performing the cell handover operation according to the second message.

[0308] This can accurately perform the cell handover operation.

[0309] It is hereby explained that the relevant content on the side of the first network device, the second network device, and the terminal side can be referred to each other, and the repeated parts will not be elaborated.

[0310] The cell handover method provided by the embodiments of the present invention will be illustrated below. The first network device is taken as an example of the source base station, and the second network device is taken as an example of the target base station.

[0311] In view of the above technical problems, the embodiments of the present invention provide a cell handover 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 handover, the UE judges relevant information such as appropriate handover timing and accurate target cell (corresponding to the above 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 information such as the load of the candidate target cell (corresponding to the above candidate target cell information), selects the target cell for resource negotiation and preparation before handover, and notifies the UE to perform the handover. Further, after the handover, the UE can also report performance information such as UL (uplink) packet delay and throughput in the target cell (corresponding to the above second performance-related information) to help the source base station further optimize the handover model (corresponding to the AI or ML model in the local area of the above first network device).

[0312] Specifically, this solution may include the following operations:

[0313] 1. The UE reports the predicted handover-related information (corresponding to the above first prediction information) to the source base station; this information may include: the cell ID of one or more target cells that can be handed over (cell identifier; corresponding to the above identifier information), the length of time staying in the cell (corresponding to the above cell stay duration, such as 600 ms), the probability of accessing the cell (corresponding to the above cell access probability, such as 60%, or probability first), the beam ID (or SSB ID (synchronization signal block identifier) or CSI-RS ID (channel state information reference signal identifier)) for accessing the cell within the coverage range of the beam, the length of time staying within the coverage range of the access beam (corresponding to the above stay duration within the coverage range of the access beam), the time point of the UE handover (such as absolute time: 10 am, or relative time: 100 ms later), or the time period of the handover (such as 10:00 - 10:02 am, or between 100 ms - 10000 ms); among them, the time point or time period of the UE handover may correspond to the above terminal handover time information.

[0314] Optionally, this information related to the handover-related information may be predicted by the UE using an AI model based on information such as the historical movement direction and speed (corresponding to the above historical movement information); among them, this information may be reported to the source base station together with the current measurement report information or reported separately, which is not limited herein.

[0315] 2. The source base station selects an appropriate (at least one) target base station where the candidate target cell is located according to 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 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 being used to initiate a handover request; the selection of the at least one candidate target cell is performed according to the first prediction information and candidate target cell information); among them, this message may carry information such as the probability of the UE arriving at the target cell, the staying time, the beam ID (SSB ID or CSI-RS ID) for accessing the cell within the coverage range of the beam, the length of time staying within the coverage range of the beam, the absolute time or relative time of accessing the cell, etc. (corresponding to the above first message carrying the third information corresponding to the at least one selected candidate target cell; among them, the third information includes: at least one of the cell stay duration, cell access probability, access beam identifier or synchronization signal block identifier or channel state information reference signal identifier, stay duration within the coverage range of the access beam, and terminal access time information); when multiple candidate target cells all allow the UE to access, the source base station may select one of them as the target cell that the UE is about to access by itself, but this is not limited thereto.

[0316] Optionally, the selection of the candidate target cell is predicted or determined by the source base station using an AI-based handover model based on information reported by the UE and other information; corresponding to the above use of the AI or ML model, at least one candidate target cell is selected;

[0317] Among them, regarding the selection of the candidate target cell, for example: among cells 1 to 4, only cells 2 and 3 are idle, and then the candidate target cell can be selected from cells 2 and 3 according to the cell access probabilities corresponding to cells 2 and 3 respectively. For example, if the cell access probability of cell 2 is higher than that of cell 3, then cell 2 can be used as the candidate target cell; but it is not limited thereto.

[0318] 3. The target base station performs admission control on the UE (corresponding to 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 sends the handover-related information (corresponding to the handover-related information corresponding to the above candidate target cell, such as the random access RA resource, C-RNTI, system information, etc. used by the UE in the corresponding cell) to the UE through the source base station; corresponding to the response message of the second network device sending the first message to the first network device; after receiving the response message of the first message sent by the second network device, the 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.

[0319] Among them, the second message may carry the time when the UE accesses the target cell, and may 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 terminal accessing the beam); the relevant information about time can be obtained by prediction or judgment, and is not limited here.

[0320] 4. The UE performs handover-related operations such as synchronizing and randomly accessing the target cell using the indicated beam according to the indication of the handover command (corresponding to the above second message); corresponding to 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; according to the second message, perform the cell handover operation;

[0321] Among them, if the time information of the UE accessing the target cell and / or beam is indicated in the handover command, the UE accesses the target cell and / or beam at the indicated time; corresponding to performing the cell handover operation within the time corresponding to the terminal access time information.

[0322] 5. After the UE switches to the target cell, it statistics the performance-related information (corresponding to the second performance-related information above) within a period of time (this period of time may be configured by the network-side device for the UE, may be determined by the UE itself, or may be defined by the protocol), such as the delay of the uplink data packet per cell or per beam (corresponding to the uplink data packet delay information above), the uplink throughput per cell or per beam (corresponding to the uplink throughput information above), the length of time staying in the cell (corresponding to the actual cell staying duration above), the length of time working under (each) access beam (corresponding to the working duration under the access beam above), etc.

[0323] 6. The target base station statistics the performance-related information of the UE within a period of time (corresponding to the first performance-related information above), such as the delay of the downlink data packet (corresponding to the downlink data packet delay information above), the downlink throughput (corresponding to the downlink throughput information above), the length of time staying in the cell (corresponding to the actual cell staying duration above), the length of time working under each beam (corresponding to the working duration under the access beam above), etc.

[0324] 7. The UE reports the above-statistics information to the target base station (corresponding to the terminal sending the second performance-related information to the second network device where the target cell is located above), and the target base station then sends the performance information of itself and the UE to the source base station (corresponding to obtaining the terminal performance-related information of the terminal corresponding to the first message above; sending the terminal performance-related information to the first network device above; the terminal performance-related information of the terminal is obtained according to the first performance-related information and the second performance-related information above), so as to help the source base station correct the handover AI model (corresponding to the first network device updating the local AI or ML model according to the terminal performance-related information);

[0325] Among them, the UE can also use the above-statistics information obtained by itself to correct the handover AI model; that is, the UE updates the local AI model.

[0326] As above, the solution provided by the embodiment of the present invention includes:

[0327] 1) The terminal reports the handover-related information corresponding to the target cell predicted based on the local AI model to the source base station; the source base station determines the final target cell for handover according to the information reported by the terminal and in combination with its own AI model.

[0328] 2) On the basis of 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 according to the performance information reported by the UE and its own statistics performance information, so as to optimize the handover AI model of the source base station.

[0329] In summary, the embodiment of the present invention provides a method for improving the accuracy of handover, which can make the handover more efficient and more in line with the UE requirements.

[0330] The embodiment of the present invention also provides a cell handover device, which is applied to a first network device, such as Figure 4 shown, including:

[0331] A first receiving module 41, configured to receive first prediction information related to cell handover sent by a terminal;

[0332] A first processing module 42, configured to select at least one candidate target cell;

[0333] A first sending module 43, configured to send 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;

[0334] A second sending module 44, configured to send a second message to the terminal after receiving a response message of 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.

[0335] The cell handover device provided by the embodiment of the present invention receives first prediction information related to cell handover sent by a 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, where the first message is used to initiate a handover request; after receiving a response message of the first message sent by the second network device, sends a second message 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; can support the selection of candidate target cells by combining the prediction information of the terminal itself, and then perform cell handover, so that factors on the UE side can be more fully considered, the handover accuracy can be improved, handover failure can be avoided as much as possible, and the proportion of cell handover failure can be reduced.

[0336] 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.

[0337] In the embodiment of the present invention, the first prediction information is obtained according to second information; the second information includes: historical movement information.

[0338] Wherein, the selection of the at least one candidate target cell is performed according to the first prediction information and candidate target cell information.

[0339] In an embodiment of the present invention, the first message carries third information corresponding to at least one of the selected candidate target cells; 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.

[0340] Wherein, the response message carries handover-related information corresponding to at least one of the candidate target cells; 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; and / or, 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.

[0341] In an embodiment of the present invention, 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.

[0342] Wherein, the selection of at least one candidate target cell includes: using an AI or ML model to select at least one candidate target cell.

[0343] Further, the cell handover device further includes: a second receiving module, configured to receive 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; working duration under the access beam; downlink packet delay information; downlink throughput information.

[0344] In an embodiment of the present invention, the cell handover device further includes: a second processing module, configured to update the local AI or ML model according to the terminal performance-related information.

[0345] Wherein, the implementation embodiments of the cell handover method on the first network device side are all applicable to the embodiments of this cell handover device and can achieve the same technical effects.

[0346] An embodiment of the present invention further provides a cell handover device, which is applied to a second network device, as Figure 5 shown, including:

[0347] A third receiving module 51, configured to receive a first message sent by a first network device, where the first message is used to initiate a handover request;

[0348] A third sending module 52, configured to send a response message of the first message to the first network device.

[0349] The cell handover device provided by the embodiment of the present invention receives a first message sent by a first network device, where the first message is used to initiate a handover request; and sends a response message of the first message to the first network device; it can support the first network device to select candidate target cells in combination with the prediction information of the terminal itself, and then perform cell handover, and fully implement the handover scheme; in this way, factors on the UE side can be more fully considered, the handover accuracy can be improved, handover failures can be avoided as much as possible, and the proportion of cell handover failures can be reduced.

[0350] Further, the cell handover device further includes: a first determination module, configured to determine whether to allow the terminal corresponding to the handover request 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, to obtain a determination result; a third processing module, configured to obtain a response message of the first message according to the determination result.

[0351] Wherein, 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: determining whether to allow the terminal corresponding to the handover request to access at least one candidate target cell under the second network device according to the handover request, to obtain a determination result.

[0352] In the embodiment of the present invention, 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.

[0353] 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.

[0354] In the embodiment of the present invention, the terminal access time information carried in the handover-related information includes: time information of the terminal accessing the beam.

[0355] Further, the cell handover device further includes: a first acquisition module, configured to acquire terminal performance-related information of a terminal corresponding to the first message; a fourth transmission module, configured to send the terminal performance-related information to the first network device; where 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 an access beam; downlink packet delay information; downlink throughput information.

[0356] Wherein, acquiring the terminal performance-related information of the terminal includes at least one of the following: statistically obtaining first performance-related information after the terminal accesses a target cell; receiving second performance-related information sent by the terminal; where 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 an 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 an access beam.

[0357] In an embodiment of the present invention, the terminal performance-related information of the terminal is obtained based on the first performance-related information and the second performance-related information.

[0358] Wherein, the implementation embodiments of the cell handover method on the second network device side are all applicable to the embodiments of this cell handover device, and the same technical effects can also be achieved.

[0359] An embodiment of the present invention further provides a cell handover device, applied to a terminal, as Figure 6 shown, including:

[0360] A second acquisition module 61, configured to acquire first prediction information related to cell handover;

[0361] A fifth transmission module 62, configured to send the first prediction information to a first network device;

[0362] A fourth reception module 63, 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 one of the candidate target cells selected by the first network device;

[0363] A fourth processing module 64, configured to perform a cell handover operation.

[0364] The cell handover device provided by the embodiment of the present invention obtains first prediction information related to cell handover; 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 hand over to one of the candidate target cells selected by the first network device; and performs a cell handover operation. It can support the first network device to select candidate target cells in combination with the prediction information of the terminal itself and then perform cell handover, so as to more fully consider the factors on the UE side, improve the handover accuracy, avoid handover failures as much as possible, and reduce the proportion of cell handover failures.

[0365] Among them, the first prediction information includes: first information corresponding to at least one predicted cell; where 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.

[0366] In the embodiment of the present invention, the first prediction information is obtained according to second information; the second information includes historical movement information.

[0367] Among them, 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.

[0368] In the embodiment of the present invention, the terminal access time information carried in the target cell handover information includes time information of the terminal access beam.

[0369] Among them, when the target cell handover information includes the terminal access time information, the performing of the cell handover operation includes: performing the cell handover operation within the time corresponding to the terminal access time information.

[0370] Further, the cell handover device further includes: a fifth processing module, configured to statistically obtain second performance-related information after the terminal accesses the target cell; and a sixth sending module, configured to send the second performance-related information to a second network device where the target cell is located; where 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.

[0371] In the embodiment of the present invention, the performing of the cell handover operation includes: performing the cell handover operation according to the second message.

[0372] 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 effect.

[0373] The embodiment of the present invention further provides a cell switching device, wherein the cell switching device is a first network device, such as Figure 7 As shown, it includes: a processor 71 and a transceiver 72;

[0374] The processor 71 is configured to receive first prediction information related to cell switching sent by the terminal through the transceiver 72;

[0375] selecting at least one candidate target cell;

[0376] 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;

[0377] 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.

[0378] The cell switching device provided in the embodiment of the present invention 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.

[0379] Among them, the first prediction information includes: the first information corresponding to at least one predicted cell; wherein, 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, and at least one of the terminal switching time information.

[0380] In the embodiment of the present invention, the first prediction information is obtained based on second information; the second information includes: historical motion information.

[0381] Among them, the selection of the at least one candidate target cell is performed according to the first prediction information and the candidate target cell information.

[0382] In an embodiment of the present invention, 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 identifier or synchronization signal block identifier or channel state information reference signal identifier, residence duration within the coverage of the access beam, and terminal access time information.

[0383] Among them, 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 identifier C-RNTI, system information, and terminal access time information; and / or, 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.

[0384] In an embodiment of the present invention, the terminal access time information carried by the handover-related information includes: time information of the terminal accessing the beam; and / or, the terminal access time information carried by the target cell handover information includes: time information of the terminal accessing the beam.

[0385] Among them, the selection of the at least one candidate target cell includes: using an AI or ML model to select the at least one candidate target cell.

[0386] Furthermore, the processor is further configured to: receive, through the transceiver, 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; working duration under the access beam; downlink packet delay information; downlink throughput information.

[0387] In an embodiment of the present invention, the processor is further configured to: update the local AI or ML model according to the terminal performance-related information.

[0388] Among them, the implementation embodiments of the cell handover method on the first network device side are all applicable to the embodiments of this cell handover device, and the same technical effects can also be achieved.

[0389] An embodiment of the present invention further provides a cell handover device, and the cell handover device is a second network device, as Figure 8 shown, including: a processor 81 and a transceiver 82;

[0390] The processor 81 is configured to receive, via the transceiver 82, a first message sent by a first network device, where the first message is used to initiate a handover request.

[0391] Via the transceiver 82, send a response message to the first network device for the first message.

[0392] The cell handover device provided in the embodiment of the present invention can support a first network device to select candidate target cells in combination with the prediction information of the terminal itself by receiving a first message sent by the first network device, where the first message is used to initiate a handover request, and then perform cell handover, so as to completely implement a handover solution. In this way, factors on the UE side can be considered more fully, the handover accuracy can be improved, handover failures can be avoided as much as possible, and the proportion of cell handover failures can be reduced.

[0393] Further, the processor is further configured to: before sending a response message to the first network device for the first message, determine 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; and obtain a response message to the first message according to the determination result.

[0394] 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 to obtain a determination result includes: determining whether to allow the terminal corresponding to the handover request to access at least one candidate target cell under the second network device according to the handover request to obtain a determination result.

[0395] In the embodiment of the present invention, 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.

[0396] 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.

[0397] In the embodiment of the present invention, the terminal access time information carried in the handover-related information includes: time information of the terminal accessing the beam.

[0398] Further, the processor is further configured to: obtain information related to the terminal performance of the terminal corresponding to the first message; and send the information related to the terminal performance to the first network device through the transceiver; wherein the information related to the terminal performance 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.

[0399] Wherein, the obtaining the information related to the terminal performance 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 at least one of: downlink packet delay information, downlink throughput information, actual cell residence duration, and working duration under the access beam; and 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.

[0400] In an embodiment of the present invention, the information related to the terminal performance of the terminal is obtained based on the first performance-related information and the second performance-related information.

[0401] Wherein, the implementation embodiments of the cell handover method on the second network device side are all applicable to the embodiments of the cell handover device and can achieve the same technical effects.

[0402] An embodiment of the present invention further provides a cell handover device, and the cell handover device is a terminal, as Figure 9 shown, including: a processor 91 and a transceiver 92;

[0403] The processor 91 is configured to obtain first prediction information related to cell handover;

[0404] send the first prediction information to a first network device through the transceiver 92;

[0405] receive, through 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 a target cell among the candidate target cells selected by the first network device;

[0406] perform a cell handover operation.

[0407] The cell handover device provided by the embodiment of the present invention obtains first prediction information related to cell handover; 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; and performs a cell handover operation. It can support the first network device to select candidate target cells in combination with the terminal's own prediction information and then perform cell handover, so as to more fully consider the factors on the UE side, improve the handover accuracy, avoid handover failures as much as possible, and reduce the proportion of cell handover failures.

[0408] Among them, the first prediction information includes: first information corresponding to at least one predicted cell; where 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.

[0409] In the embodiment of the present invention, the first prediction information is obtained based on second information; the second information includes historical movement information.

[0410] Among them, 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.

[0411] In the embodiment of the present invention, the terminal access time information carried in the target cell handover information includes time information of the terminal accessing the beam.

[0412] Among them, when the target cell handover information includes the terminal access time information, the performing of the cell handover operation includes: performing the cell handover operation within the time corresponding to the terminal access time information.

[0413] Further, the processor is further configured to: statistically obtain second performance-related information after the terminal accesses the target cell; send the second performance-related information to a second network device where the target cell is located through the transceiver; where 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.

[0414] In the embodiment of the present invention, the performing of the cell handover operation includes: performing the cell handover operation according to the second message.

[0415] Among them, the implementation embodiments of the above cell handover method on the terminal side are all applicable to the embodiments of this cell handover device and can achieve the same technical effects.

[0416] An embodiment of the present invention further provides a cell handover device, including 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 methods on the above-mentioned first network device side, second network device side, or terminal side are implemented.

[0417] Among them, the implementation embodiments of the above-mentioned cell handover methods on the first network device side, second network device side, or terminal side are all applicable to the embodiment of this cell handover device, and the same technical effects can also be achieved.

[0418] An embodiment of the present invention further provides a readable storage medium, on which a program is stored, and when the program is executed by a processor, the steps in the above-mentioned cell handover methods on the first network device side, second network device side, or terminal side are implemented.

[0419] Among them, the implementation embodiments of the above-mentioned cell handover methods on the first network device side, second network device side, or terminal side are all applicable to the embodiment of this readable storage medium, and the same technical effects can also be achieved.

[0420] 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.

[0421] In the embodiments of the present invention, a module can be implemented by software so as to be executed by various types of processors. For example, an identifiable executable code module can include one or more physical or logical blocks of computer instructions. For example, it can be constructed as an object, a procedure, or a function. 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. When these instructions are logically combined together, they constitute the module and achieve the specified purpose of the module.

[0422] In fact, an executable code module can be a single instruction or many instructions, and can even be distributed on multiple different code segments, distributed in different programs, and distributed across multiple memory devices. Similarly, the operation data can be identified within the module, and can be implemented in any appropriate form and organized in any appropriate type of data structure. The operation data can be collected as a single data set, or can be distributed in different locations (including on different storage devices), and at least partially can only exist as an electronic signal in the system or network.

[0423] When a module can be implemented by software, considering the level of existing hardware technology, for a module that can be implemented by software, without considering cost, those skilled in the art can build a corresponding hardware circuit to implement the corresponding function. The hardware circuit includes 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.

[0424] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A cell handover method, applied to a first network device, characterized in that, It includes: Receiving first prediction information related to cell handover sent by a receiving 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 target cell among 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, characterized in that, The first prediction information is obtained based on 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, characterized in that, 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, characterized in that The selecting at least one candidate target cell includes: Using an AI or ML model to select at least one candidate target cell.

9. The cell handover method according to claim 1, wherein It further 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 packet delay information; Uplink throughput information; Actual cell residence duration; Working duration under the access beam; Downlink packet delay information; Downlink throughput information.

10. The cell handover method according to claim 9, characterized in that, It further includes: 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, characterized in that, It includes: Receiving a first message sent by a first network device, the first message being used to initiate a handover request; Sending a response message of the first message to the first network device.

12. The cell handover method according to claim 11, wherein Before sending the response message of 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; Obtain a response message to the first message according to the determination result.

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 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, wherein, It 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; Operating 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 operating 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 operating 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 according to the first performance-related information and the second performance-related information.

20. A cell handover method, applied to a terminal, characterized in that, It includes: Obtain first prediction information related to cell handover; Send the first prediction information to the first network device; Receive a second message sent by the first network device, where the second message is used to instruct the terminal to handover 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 identifier or synchronization signal block identifier or channel state information reference signal identifier, residence duration within the coverage 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 the 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 a beam.

25. The cell handover method according to claim 23 or 24, characterized in that, 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, wherein Further includes: 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 an access beam.

27. The cell handover method according to claim 20, characterized in that, 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, characterized in that, 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, and the first message is 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, and the second message is used to instruct the terminal to switch to a target cell among the selected candidate target cells.

29. A cell handover device, applied to a second network device, characterized in that Includes: A third receiving module, configured to receive a first message sent by a first network device, and the first message is 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, characterized in that, 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, and the second message is used to instruct the terminal to switch to a target cell among 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, characterized in that, Includes: A processor and a transceiver; The processor is configured to receive, through the transceiver, first prediction information related to cell handover sent by a terminal; Select at least one candidate target cell; Through the transceiver, send 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 handover request; After receiving a response message of the first message sent by the second network device, send a second message to the terminal through the transceiver, and the second message is used to instruct the terminal to switch to a target cell among the selected candidate target cells.

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

33. A cell handover device, the cell handover device being a terminal, characterized in that, Comprising: a processor and a transceiver; The processor is configured to obtain first prediction information related to cell handover; send the first prediction information to a first network device via the transceiver; receive, via the transceiver, 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 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; characterized in that, When the processor executes the program, it implements the cell handover method according to any one of claims 1 to 27.

35. A readable storage medium, on which a program is stored, characterized in that, When the program is executed by the processor, it implements the steps in the cell handover method according to any one of claims 1 to 27.

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