CN114727350B - Terminal switching method, device, equipment and storage medium - Google Patents

Abstract

The present invention provides a terminal switching method, device, equipment and storage medium, which relate to the communication field and are used to improve the service performance after terminal switching, shorten the switching delay, and improve the switching performance, including: the network equipment determines that the target terminal is at a preset time The location information of the target terminal, and according to the location information of the target terminal at the preset time, determine multiple coverage cells that simultaneously cover the target terminal at the preset time; further, the network device determines at least one candidate cell from the multiple coverage cells, and sends the The serving base station of the target terminal sends the target sequence, so that the serving base station instructs the target terminal to switch to the target cell at the preset time; the service performance parameters of each candidate cell meet the performance requirements of the target terminal at the preset time, and the target cell is at least one candidate Among the cells, the target sequence includes the identity of at least one candidate cell for a cell that satisfies the handover condition of the target terminal.

Description

Terminal switching method, device, equipment and storage medium

technical field

The present invention relates to the technical field of communication, and in particular to a terminal switching method, device, equipment and storage medium.

Background technique

In a mobile communication network, cell switching by a terminal is a basic mobility management technology, which enables the terminal to maintain continuous network access during the mobile process. In related technologies, the process of cell handover by a terminal generally includes stages such as terminal measurement reporting, base station judgment, handover preparation, and handover execution. Specifically, after the serving base station of the terminal receives the measurement report reported by the terminal, if the signal strength of the serving cell measured by the terminal in the measurement report is less than the preset threshold, the serving base station will base all signals of all cells measured by the terminal in the measurement report Strength, the cell with the highest signal strength is used as the target cell to be handed over by the terminal, so as to perform subsequent handover procedures.

However, in the above-mentioned cell switching method for the terminal, there may be performance differences between the target cell and the serving cell in terms of network capabilities and service performance. business experience.

Contents of the invention

The invention provides a terminal switching method, device, equipment and storage medium, which are used to improve the service performance after terminal switching, shorten the switching delay, and improve the switching performance.

To achieve the above object, the present invention adopts the following technical solutions:

In a first aspect, a terminal switching method is provided, and the terminal switching method is applied to a network device. The terminal handover method includes: the network device determines the location information of the target terminal at a preset time, and according to the location information of the target terminal at the preset time, determines a plurality of coverage cells that simultaneously cover the target terminal at the preset time; Determine at least one candidate cell in the cell; the service performance parameters of each candidate cell meet the performance requirements of the target terminal at the preset time; send the target sequence to multiple in the preset area, so that the serving base station of the target terminal indicates that the target terminal is in Switch to the target cell at a preset time, the target cell is a cell that satisfies the switching conditions of the target terminal among at least one candidate cell, the target sequence includes the identity of at least one candidate cell, and the service of the target terminal is the target terminal at the previous corresponding time at the preset time The serving base station accessed at adjacent times belongs to a certain base station in the preset area, and multiple coverage cells belong to multiple base stations in the preset area.

In the terminal handover method provided by the present invention, the target cell to be handed over by the target terminal is confirmed from candidate cells that meet the performance requirements of the target terminal. In this way, it is ensured that the target cell can meet the performance requirements of the target terminal, which can improve The service performance of the terminal after handover shortens the handover delay and improves the handover performance, ensuring the service experience of the terminal.

In a possible design, the above-mentioned preset time is a time before the current time, and the above-mentioned determination of the location information of the target terminal at the preset time includes: the network device obtains the latitude and longitude information of the target terminal at the preset time, and the preset area The latitude and longitude information of the center position of each grid; determine the distance between the target terminal and the center position of each grid; determine the grid identification of the grid with the shortest distance from the target terminal as the position information of the target terminal. In this design, the network device determines the location information of the historical moment, and prepares for the subsequent process, the network device predicts the location information of the future moment according to the location information of the historical moment.

In a possible design, the preset time is a time after the current time, and the determination of the location information of the target terminal at the preset time further includes: the network device predicts that the target terminal will be at the preset time according to the preset time and the first prediction model. The location information at a time is assumed; the first prediction model is used to characterize the mapping relationship between the time and the location information of the target terminal. In this design, the network equipment predicts the location information of the target terminal, so that when the preset time arrives, the target terminal can be handed over to a cell with better service performance.

In a possible design, the above terminal switching method further includes: the network device acquires multiple historical location information corresponding to the target terminal at multiple historical moments; one historical location information corresponds to one historical moment; each historical moment is used as a feature, The historical location information corresponding to each historical moment is used as a label, and the preset first neural network is trained to obtain the first prediction model. In this design, the first prediction model for predicting the location information of the target terminal is established, so that in the subsequent process, the model can be used to determine the location information of the target terminal at a preset time.

In a possible design, the service performance parameters of each candidate cell include the maximum bandwidth supported by the candidate cell, frequency range, network standard set, public land mobile network (public land mobile network, PLMN) identity set and network slice identity set at least one of the . The service performance parameters of each candidate cell meet the performance requirements of the target terminal at the preset time, including at least one of the following conditions: the maximum bandwidth supported by the candidate cell is greater than or equal to the maximum bandwidth supported by the target terminal, and the frequency range supported by the target terminal is within Within the frequency range supported by the candidate cell, the set of network standards supported by the candidate cell includes the network standard supported by the target terminal, the set of PLMN identifiers supported by the candidate cell includes the PLMN identifier supported by the target terminal, and the set of network slice identifiers supported by the candidate cell includes the set of network slice identifiers supported by the target terminal. The network slice identifier for . This design implements how to determine candidate cells from multiple coverage cells, which can ensure that no matter which candidate cell is selected, it can meet the performance requirements of the target terminal when determining the target cell.

In a possible design, the above terminal handover method further includes: the network device determines the service performance characteristic value of each candidate cell, and the service performance characteristic value of each candidate cell is used to represent the service performance provided by each candidate cell to the target terminal ; According to the size of the service performance characteristic value of each candidate cell, at least one candidate cell is sorted to obtain a target sequence; the target sequence includes the identification of at least one candidate cell; sending the identification of at least one candidate cell to the serving base station of the target terminal includes: The target sequence is sent to the serving base station of the target terminal. In this design, the candidate cells that meet the performance requirements of the target terminal are sorted according to the size of their respective service performance characteristic values, so that when the serving base station of the target terminal determines the target cell in the subsequent process, it can preferentially select the larger service performance characteristic value The candidate cell is used as the target cell, so that the target terminal can obtain better service performance after accessing the target cell.

In a possible design, the above-mentioned determination of the service performance characteristic value of each candidate cell includes network equipment determining multiple target service performance parameters corresponding to each candidate cell at multiple target times, and one target time corresponds to one target service performance parameter , each target time is the time after the current time, and each target service performance parameter is used to characterize the service quality of a candidate cell for the target terminal at different target times; according to multiple target service performance parameters, determine each candidate The service performance characteristic value of the cell. In this design, the network equipment determines the service performance characteristic value used to characterize the service performance of the candidate cell, which facilitates the selection of the target cell with better service performance for the target terminal in the subsequent process.

In a possible design, for any candidate cell, the above-mentioned determination of multiple target service performance parameters corresponding to the candidate cell at multiple target times includes: according to the first target time, the spectral efficiency of the target terminal, and the target terminal at the first The location information at the target moment and the second prediction model predict the target service performance parameters corresponding to each candidate cell at the first target moment; the first target moment is any one of the multiple target moments; the second prediction model is used to characterize At different target times, the mapping relationship between the spectral efficiency of the terminal, the location information of the terminal, and the target service performance parameters corresponding to the candidate cell of the terminal. In this design, the network equipment predicts the service performance parameters of the candidate cells at the preset time, so that when the preset time arrives, the target terminal can be handed over to a cell with better service performance.

In a possible design, the network device acquires multiple sample service performance parameters corresponding to each candidate cell at multiple historical moments, the spectral efficiency of the first terminal, and the location information of the first terminal at each historical moment; a historical moment Corresponding to a sample service performance parameter, each sample service performance parameter is used to characterize the service quality of a candidate cell for the first terminal at different historical moments; the first terminal is any terminal in each candidate cell; the first The spectral efficiency of the terminal, the location information of the first terminal at each historical moment, and each historical moment are used as features, and the sample service performance parameters corresponding to each candidate cell at each historical moment are used as labels, and the preset second neural network Perform training to obtain the second prediction model. In this design, the network device establishes a second prediction model for predicting the service performance parameters of the candidate cell at the preset time, so that the model can be used to determine the service performance parameters of the candidate cell at the preset time in the subsequent process.

In a second aspect, the present invention provides a terminal switching method, which is applied to a serving base station of a target terminal. The serving base station of the target terminal obtains the identity of at least one candidate cell; each candidate cell covers the target terminal at a preset time, and the service performance parameters of each candidate cell meet the performance requirements of the target terminal at a preset time; according to at least one candidate cell , indicating that the target terminal is handed over to the target cell at a preset time, and the target cell is a cell that satisfies the handover condition of the target terminal among at least one candidate cell.

In the terminal handover method provided by the present invention, when determining the target cell, the serving base station of the target terminal determines the cell whose signal strength meets the requirements from the candidate cells whose service performance parameters can meet the terminal performance requirements as the target cell, which not only ensures the terminal handover The service performance after reaching the target cell is not affected, and the signal strength of the target cell at the location of the target terminal is better, ensuring that the target terminal can successfully access the target cell and improving the handover success rate.

In a possible design, the acquisition of the identity of at least one candidate cell specifically includes: receiving the target sequence sent by the network device; the target sequence sorts at least one candidate cell according to the service performance characteristic value of each candidate cell, and the target sequence The sequence includes an identifier of at least one candidate cell; the target cell is the first cell that satisfies the handover condition of the target terminal based on the order in the target sequence. In this design, when the serving base station of the target terminal receives a target sequence that includes the identity of at least one candidate cell, based on the target sequence, the candidate cells are sorted according to the size of the service performance characteristic value, and the service of the target terminal The base station can preferentially select a candidate cell with a larger service performance characteristic value as the target cell, so that the target terminal can obtain better service performance after accessing the target cell.

In a third aspect, the present invention provides a terminal handover method, which is applied to a target base station to which a target cell belongs. The target cell is a cell that satisfies the handover condition of the target terminal among at least one candidate cell, each candidate cell covers the target terminal at a preset time, and the service performance parameters of each candidate cell meet the performance requirements of the target terminal at a preset time; the method The method includes: the target base station determines the target transmission resources for the target cell to provide services for the target terminal before the preset time, and provides services for the target terminal based on the target transmission resources after the target terminal is handed over to the target cell.

In the terminal handover method provided by the present invention, the target base station allocates target transmission resources for the target terminal according to the bandwidth capability and location information of the target terminal, realizing on-demand allocation of cell transmission resources such as physical resource block (PRB), power, etc. It can meet the service transmission requirements of the target terminal and avoid waste of resources; and it can determine the target cell in advance, reserve cell transmission resources for the target terminal before the target terminal moves to the target cell, and make preparations before handover. When the target terminal moves to the location of the target cell, there is no need to perform handover preparation processes such as terminal measurement reporting, handover judgment, and target cell resource allocation, which minimizes handover delay and improves handover performance.

In a possible design, the above target transmission resources include target transmission power and/or target PRB resources; the target transmission power is positively correlated with the target transmission distance, and the target transmission distance is the distance between the target terminal and the target base station; the target PRB The resource is positively related to the maximum bandwidth supported by the target terminal. In this design, the target base station determines how many resources should be configured for the target terminal in advance to meet the performance requirements of the target terminal service.

In a fourth aspect, a network device is provided, including a determining unit and a sending unit, the determining unit is used to determine the location information of the target terminal at a preset time; the determining unit is also used to determine the location information of the target terminal at a preset time Covering multiple coverage cells of the target terminal at the preset time; the determination unit is also used to determine at least one candidate cell from the multiple coverage cells; the service performance parameters of each candidate cell meet the performance requirements of the target terminal at the preset time; The unit is used to send a target sequence to multiple base stations in the preset area, so that the serving base station of the target terminal instructs the target terminal to switch to the target cell at a preset time, and the target cell is a cell that satisfies the switching conditions of the target terminal among at least one candidate cell ; The target sequence includes the identity of at least one candidate cell, the serving base station of the target terminal is the serving base station accessed by the target terminal at the previous adjacent time of the preset time, and belongs to a certain base station in the preset area, and multiple coverage cells Belonging to multiple base stations within the preset area.

In a possible design, the foregoing network device further includes an acquisition unit. The acquiring unit is used to acquire the latitude and longitude information of the target terminal at the preset moment, and the latitude and longitude information of the center position of each grid in the preset area. The determination unit is also used to determine the distance between the target terminal and the center position of each grid. The determining unit is further configured to determine the grid identifier of the grid with the shortest distance from the target terminal as the position information of the target terminal.

In a possible design, the determination unit in the network device is further configured to predict the location information of the target terminal at the preset time according to the preset time and the first prediction model. The first prediction model is used to represent the mapping relationship between time and location information of the target terminal.

In a possible design, the foregoing network device further includes a processing unit. The obtaining unit is used to obtain multiple pieces of historical location information corresponding to multiple historical moments of the target terminal; one piece of historical location information corresponds to one historical moment. The processing unit is configured to use each historical moment as a feature and the historical location information corresponding to each historical moment as a label to train the preset first neural network to obtain a first prediction model.

In a possible design, the service performance parameters of the candidate cell include at least one of the maximum bandwidth supported by the candidate cell, frequency range, network standard set, public land mobile network PLMN identity set, and network slice identity set. The service performance parameters of the candidate cell meet the performance requirements of the target terminal at the preset time, including at least one of the following conditions: the maximum bandwidth supported by the candidate cell is greater than or equal to the maximum bandwidth supported by the target terminal, and the frequency range supported by the target terminal is located in the candidate cell Within the supported frequency range, the set of network standards supported by the candidate cell includes the network standard supported by the target terminal, the set of PLMN identifiers supported by the candidate cell includes the PLMN identifier supported by the target terminal, and the set of network slice identifiers supported by the candidate cell includes the network supported by the target terminal Slice ID.

In a possible design, the determining unit in the network device is further configured to determine a service performance characteristic value of each candidate cell, and the service performance characteristic value of the candidate cell is used to represent the service performance provided by the candidate cell to the target terminal. The determination unit is also used to sort at least one candidate cell according to the service performance characteristic value of each candidate cell to obtain a target sequence; the target sequence includes the identity of at least one candidate cell; the sending unit is used to send to the serving base station of the target terminal target sequence.

In a possible design, the determination unit in the above network device is also used to determine multiple target service performance parameters corresponding to each candidate cell at multiple target times, one target time corresponds to one target service performance parameter, and each target time Both are moments after the current moment, and each target service performance parameter is used to characterize the service quality of a candidate cell for the target terminal at different target moments; according to multiple target service performance parameters, determine the service performance characteristics of each candidate cell value.

In a possible design, the determination unit in the network device is specifically configured to predict the candidate cell according to the first target time, the spectral efficiency of the target terminal, the location information of the target terminal at the first target time, and the second prediction model The target service performance parameters corresponding to the first target time; the first target time is any one of multiple target times; the second prediction model is used to represent the spectral efficiency of the terminal, the location information of the terminal and the terminal The mapping relationship of the target service performance parameters corresponding to the candidate cells.

In a possible design, the obtaining unit is also used to obtain multiple sample service performance parameters corresponding to each candidate cell at multiple historical moments, the spectral efficiency of the first terminal, and the location information of the first terminal at each historical moment; A historical moment corresponds to a sample service performance parameter, and each sample service performance parameter is used to characterize the service quality of a candidate cell providing services to the first terminal at different historical moments; the first terminal is any terminal in each candidate cell. The processing unit is configured to use the spectral efficiency of the first terminal, the location information of the first terminal at each historical moment, and each historical moment as features, and use the sample service performance parameters corresponding to each candidate cell at each historical moment as a label, to The preset second neural network is trained to obtain a second prediction model.

In a fifth aspect, there is provided a base station device, the base station device is a serving base station for a target terminal, the base station device includes an acquisition unit and a processing unit, the acquisition unit is used to acquire the identity of at least one candidate cell; each candidate cell covers at a preset time The target terminal, and the service performance parameters of each candidate cell meet the performance requirements of the target terminal at a preset time; the processing unit is used to instruct the target terminal to switch to the target cell at a preset time according to the identity of at least one candidate cell, and the target cell is A cell that satisfies the handover condition of the target terminal in at least one candidate cell.

In a possible design, the acquisition unit in the base station equipment is specifically used to receive a target sequence; the target sequence sorts at least one candidate cell according to the service performance characteristic value of each candidate cell, and the target sequence includes at least one candidate cell logo. The target cell is the first cell that satisfies the handover condition of the target terminal based on the sequence in the target sequence.

According to the sixth aspect, a base station device is provided. The base station device is the target base station to which the target cell belongs; the target cell is a cell that satisfies the switching conditions of the target terminal among at least one candidate cell, and each candidate cell covers the target terminal at a preset time, and every The service performance parameters of the candidate cells meet the performance requirements of the target terminal at a preset time; including a determination unit and a processing unit. The determining unit is used to determine the target transmission resources for the target cell to provide services for the target terminal before the preset time; the processing unit is used to provide services for the target terminal based on the target transmission resources after the target terminal is handed over to the target cell.

In a possible design, the target transmission resource includes a target transmission power, and/or, a target physical resource block PRB resource; the target transmission power is positively correlated with the target transmission distance, and the target transmission distance is the distance between the target terminal and the target base station; The target PRB resource is positively correlated with the maximum bandwidth supported by the target terminal.

In a seventh aspect, there is provided a network device, the network device includes a memory and a processor; the memory and the processor are coupled, the memory is used to store computer program codes, the computer program codes include computer instructions, and when the processor executes the computer instructions , the network device executes the terminal switching method in the first aspect.

In an eighth aspect, there is provided a base station device, where the base station device includes a memory and a processor; the memory and the processor are coupled, and the memory is used to store computer program codes, where the computer program codes include computer instructions, and when the processor executes the computer instructions , the base station device executes the terminal handover method in the second aspect or the third aspect.

In a ninth aspect, a computer-readable storage medium is provided. Instructions are stored in the computer-readable storage medium. When the instructions are run on a network device, the network device is made to execute the terminal switching method in the first aspect.

In a tenth aspect, a computer-readable storage medium is provided, and an instruction is stored in the computer-readable storage medium, and when the instruction is run on a base station device, the base station device is made to execute the terminal handover method as in the second aspect or the third aspect .

Description of drawings

FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present invention;

FIG. 2 is a first schematic flow diagram of a terminal switching method provided by an embodiment of the present invention;

FIG. 3 is a second schematic flow diagram of a terminal switching method provided by an embodiment of the present invention;

FIG. 4 is a third schematic flowchart of a terminal switching method provided by an embodiment of the present invention;

FIG. 5 is a fourth schematic flow diagram of a terminal switching method provided by an embodiment of the present invention;

FIG. 6 is a fifth schematic flow diagram of a terminal switching method provided by an embodiment of the present invention;

FIG. 7 is a sixth schematic flow diagram of a terminal switching method provided by an embodiment of the present invention;

FIG. 8 is a seventh schematic flowchart of a terminal switching method provided by an embodiment of the present invention.

FIG. 9 is a first structural diagram of a network device provided by an embodiment of the present invention;

FIG. 10 is a first structural schematic diagram of a base station device provided by an embodiment of the present invention;

FIG. 11 is a second structural schematic diagram of a base station device provided by an embodiment of the present invention;

FIG. 12 is a second structural diagram of a network device provided by an embodiment of the present invention;

FIG. 13 is a third structural diagram of a network device provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present invention shall not be construed as being more preferred or more advantageous than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

In the description of the present invention, unless otherwise specified, "/" means "or", for example, A/B may mean A or B. The "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone These three situations. In addition, "at least one" and "plurality" mean two or more. Words such as "first" and "second" do not limit the number and order of execution, and words such as "first" and "second" do not necessarily limit the difference.

In the prior art, when the serving base station determines the target cell to be handed over by the terminal, it usually determines the cell with the highest signal strength as the target cell based on the measurement report reported by the terminal. Considering the network capability and service performance of the target cell and the serving cell, if there is a difference in the network capability and service performance between the target cell and the serving cell, the service performance of the terminal before and after the handover will be inconsistent, which will affect the service experience.

In order to solve the above problems, the present invention provides a terminal switching method, device, device and storage medium. The network device determines the location information of the target terminal at the preset time, and determines the location information of the target terminal at the preset time according to the location information of the target terminal at the preset time. Cover multiple coverage cells of the target terminal at the same time; determine at least one candidate cell from multiple coverage cells; the service performance parameters of each candidate cell meet the performance requirements of the target terminal at the preset time; send at least An identifier of a candidate cell, so that the serving base station instructs the target terminal to switch to the target cell at a preset time, and the target cell is a cell that satisfies the handover condition of the target terminal among at least one candidate cell. In the terminal handover method provided by the present invention, the target cell to be handed over by the target terminal is confirmed from candidate cells that meet the performance requirements of the target terminal. Service performance, shorten the handover delay, improve the handover performance, and ensure the service experience of the terminal.

An embodiment of the present invention provides a communication system. Referring to FIG. 1 , the above terminal switching method may be applied to the communication system 10 shown in FIG. 1 . As shown in FIG. 1 , a communication system 10 includes a network device 11 , a target terminal 12 , a base station device 13 , a base station device 14 and a base station device 15 .

Wherein, the preset area is an arbitrarily defined area in the network, including multiple base station devices. In the communication system shown in FIG. 1 , the preset area includes base station equipment 13 , base station equipment 14 and base station equipment 15 .

The network device 11 may be a certain base station device, core network device, or base station operation and maintenance platform within a preset area, or may be a switching management device connected to the base station device, core network device, and base station device operation and maintenance platform.

The network device 11 is used to realize the switching management function of the terminal 12 in the preset area, and there is a message interaction interface with the base station device 13, the base station device 14, and the base station device 15 in the preset area for information acquisition and message transmission . The network device 11 and the base station device 13 , the base station device 14 and the base station device 15 may be connected in a wired manner or in a wireless manner, which is not limited in this embodiment of the present invention.

The target terminal 12 may be any terminal in the preset area, moves in the preset area, and accesses the base station equipment in the preset area.

Taking the base station device 13 as an example, if the base station device 13 provides services for the target terminal 12 , then the base station device 13 is the serving base station of the target terminal 12 .

Fig. 2 is a schematic flowchart of a terminal handover method according to some exemplary embodiments. In some embodiments, the above terminal handover method can be applied to network devices in the communication system as shown in FIG. 1 . Hereinafter, the embodiment of the present invention will describe the above terminal switching method by taking the terminal switching method applied to a network device as an example.

As shown in FIG. 2, the terminal switching method provided by the embodiment of the present invention includes the following S201-S206.

S201. The network device determines location information of a target terminal at a preset time.

As a possible implementation, when the preset time is the current time, the network device receives the location indication message sent by the serving base station of the target terminal, and determines the location information of the target terminal at the preset time based on the location indication message.

In some embodiments, the serving base station of the target terminal obtains the latitude and longitude of the location of the target terminal based on the base station positioning technology, generates a location indication message, and sends it to the network device.

It should be noted that the latitude and longitude of the target terminal may also be acquired through a terminal global positioning system (global positioning system, GPS) positioning technology, and reported by the target terminal to a serving base station of the target terminal. Further, the serving base station of the target terminal generates a location indication message according to the latitude and longitude of the target terminal, and sends it to the network device. The embodiment of the present invention does not limit how to determine the latitude and longitude of the target terminal.

In practical applications, the above location information may also be a grid identifier used to indicate the location of the target terminal.

It should be noted that the network device divides each cell in the preset area into multiple grids, and each grid corresponds to a grid ID. The grid ID consists of a cell ID and a grid ID. Each grid ID is in There is only one grid corresponding to the preset area, and it is also uniquely corresponding to one cell. Information such as the cell ID in the preset area, the grid ID corresponding to each cell ID, the latitude and longitude of the base station equipment to which the cell belongs, and the latitude and longitude of the center of the grid are pre-stored in the storage unit of the network device.

In some embodiments, if the grid identifier is used as the location information to be determined, after the network device determines the latitude and longitude of the target terminal, it obtains the latitude and longitude of the center positions of each grid in the preset area, and determines the distance between the target terminal and the location in the preset area. The distance between each grid center location. Further, the network device determines the grid identifier of the grid with the smallest distance from the target terminal as the location information of the target terminal.

As another possible implementation, when the preset time is a time after the current time, the network device predicts the location of the target terminal at the preset time according to the location information of multiple target terminals corresponding to multiple historical times. location information.

It should be noted that the network device can determine the regularity of the position change of the target terminal according to the position information of multiple target terminals corresponding to multiple historical moments, and then predict the moving trajectory of the target terminal in the future. Further, the network device determines the location information of the target terminal at the preset moment.

In the case that the preset time is a time after the current time, for a specific implementation manner of predicting the location information of the target terminal at the preset time, reference may be made to the subsequent description of the embodiments of the present invention, which will not be repeated here.

S202. The network device determines multiple coverage cells that simultaneously cover the target terminal at the preset time according to the location information of the target terminal at the preset time.

As a possible implementation manner, the network device determines the grid corresponding to the location information of the target terminal at a preset time, and then determines the cell to which the grid belongs. Further, based on the determined cell to which the grid belongs, the network device determines the cell that has the same coverage relationship with the cell to which the grid belongs from the same coverage information database of the preset area, and obtains the location information corresponding to the target terminal at the preset time. Multiple coverage cells, that is, multiple coverage cells that simultaneously cover the target terminal at a preset time.

It should be noted that the co-coverage information base of the preset area includes the co-coverage relationship among the cells in the preset area, which may be pre-stored in the storage unit of the network device. Wherein, if the two cells have the same wireless signal coverage area, it is considered that the same coverage relationship exists between the two cells. The same coverage relationship between cells in the preset area can be determined based on engineering parameters such as latitude, longitude and azimuth of each cell, or based on measurement reports and handover data of terminals.

In some embodiments, the network device calculates the distance between the two cells based on the latitude and longitude of the two cells, if the distance between the two cells is less than the preset distance threshold, and the difference between the azimuth angles of the two cells is less than the preset angle threshold , it is determined that there is a same coverage relationship between the above two cells.

In yet another embodiment, the network device obtains the measurement report sent by any terminal to the serving base station of the terminal. If the difference between the signal strengths of the two cells in the measurement report is less than the preset signal strength threshold, the network device determines the measurement report as the first measurement report, and if the measurement report includes any one of the above two cells signal strength, the network device determines the measurement report as the second measurement report.

Further, if the ratio of the number of first measurement reports received by the serving base station within a preset time period to the number of second measurement reports received by the serving base station within a preset time period is greater than a preset threshold, the network device determines The above two cells have the same coverage relationship.

In the third embodiment, the network device obtains handover statistical data of two cells, and if the number of handovers between the two cells is greater than a preset handover number threshold, it is determined that the two cells have the same coverage relationship.

It should be noted that the series of thresholds set in the foregoing embodiments may be pre-set in the network device by the operation and maintenance personnel of the network device.

S203. The network device determines at least one candidate cell from multiple coverage cells.

Wherein, the service performance parameter of each candidate cell satisfies the performance requirement of the target terminal at a preset moment.

As a possible implementation manner, the network device acquires the service performance parameter of each of the multiple coverage cells and the performance requirement of the target terminal. Further, the network device determines at least one candidate cell from multiple coverage cells based on the performance requirement of the target terminal.

It should be noted that the service performance parameters of the candidate cell include at least one of the maximum bandwidth supported by the candidate cell, frequency range, network standard set, public land mobile network PLMN identity set, and network slice identity set. The performance requirement parameters of the target terminal include at least one of a maximum bandwidth supported by the target terminal, a frequency range, a network standard set, a public land mobile network PLMN identification set, and a network slice identification set.

Exemplarily, the above-mentioned network standard may be third generation mobile communication technology (third generation, 3G)/fourth generation mobile communication technology (fourth generation, 4G)/fifth generation mobile communication technology (fifth generation, 5G), etc.; The PLMN identifier can be configured according to the network type of the operator, and different operators or different types of wireless networks (such as 2C networks and 2C networks) can be configured as different PLMN network identifiers; the above slice identifiers reflect the slice types supported by the terminal (such as URLLC Slice, eMBB slice, massive machine type communication (massive machine type communication, mMTC) slice), different slice types correspond to different slice identifiers.

It should be noted that the service performance parameters of the candidate cell meet the performance requirements of the target terminal at the preset time, including at least one of the following conditions: the maximum bandwidth supported by the candidate cell is greater than or equal to the maximum bandwidth supported by the target terminal, and the frequency supported by the target terminal The range is within the frequency range supported by the candidate cell, the set of network standards supported by the candidate cell includes the network standard supported by the target terminal, the set of PLMN identifiers supported by the candidate cell includes the PLMN identifier supported by the target terminal, and the set of network slice identifiers supported by the candidate cell includes the target The identifier of the network slice supported by the terminal.

In some embodiments, the network device acquires the service performance parameter of each coverage cell in the plurality of coverage cells, which may be: the network device sends a cell service performance parameter request message to the base station device to which each coverage cell belongs. Wherein, the cell service performance parameter request message includes the cell identity of each covered cell, and the cell service performance parameter request message is used to request to acquire the service performance parameter of each covered cell.

Correspondingly, the base station equipment to which each coverage cell belongs receives the cell service performance parameter request message, and after determining the service performance parameter of each coverage cell based on the cell identity of each coverage cell, generates a service performance parameter carrying the service performance parameter an indication message, and send the service performance parameter indication message to the network device.

Further, the network equipment receives the service performance parameter indication message sent by the base station equipment, and determines the service performance parameter of each covered cell from the service performance parameter indication message.

In some embodiments, the network device acquires the performance requirements of the target terminal, which may be: within a preset historical time, when the target terminal accesses any base station device in the preset area, send the terminal capability to the accessed serving base station The message carries the capability parameter of the target terminal. After receiving the capability parameter of the target terminal, the serving base station sends the capability parameter of the target terminal to the network device. Further, after receiving the capability parameter of the target terminal, the network device determines the performance requirement of the target terminal. If the network device receives the capability parameters of the target terminal sent by multiple base station devices, it updates the capability parameter of the target terminal to the latest received capability parameter of the target terminal, and then determines the performance requirements of the target terminal.

S204. The network device determines the service performance characteristic value of each candidate cell, sorts at least one candidate cell, and obtains a target sequence.

Wherein, the service performance characteristic value of each candidate cell is used to characterize the service performance provided by each candidate cell to the target terminal, and the target sequence includes an identifier of at least one candidate cell.

It should be noted that how to determine the service performance characteristic value of each candidate cell and how to implement the sorting of at least one candidate cell can refer to the subsequent records of the embodiments of the present invention, and will not be repeated here.

S205. The network device sends the target sequence to multiple base stations in the preset area.

Correspondingly, the serving base station of the target terminal receives the target sequence sent by the network device, and obtains the identity of at least one candidate cell from the target sequence. Wherein, each candidate cell covers the target terminal at a preset time, and the service performance parameters of each candidate cell meet the performance requirement of the target terminal at a preset time.

S206. The serving base station of the target terminal instructs the target terminal to switch to the target cell at a preset time according to the identifier of at least one candidate cell.

Wherein, the target cell is a cell that satisfies the handover condition of the target terminal among at least one candidate cell.

As a possible implementation manner, the serving base station of the target terminal obtains the measurement report of the target terminal after receiving the identity of at least one candidate cell sent by the network device. Further, based on the signal strength value of the candidate cell carried in the measurement report and according to the target sequence, the serving base station of the target terminal determines the first candidate cell that satisfies the handover condition of the target terminal as the target cell; where the handover condition can be The signal strength value of the candidate cell at an adjacent time before the preset time is greater than a preset signal strength threshold.

Subsequently, the serving base station of the target terminal generates a handover instruction message based on the determined target cell, and the handover instruction message is used to instruct the target terminal to switch to the target cell at a preset time.

It should be noted that the above preset signal strength threshold may be preset by operation and maintenance personnel of the base station equipment.

As another possible implementation manner, after receiving the identity of at least one candidate cell sent by the network device, the serving base station of the target terminal forwards it to the target terminal. Further, the target terminal obtains the signal strength measurement values of each candidate cell, and according to the target sequence, determines the first candidate cell that satisfies the handover condition of the handover target terminal as the target cell; wherein, the handover condition can be the previous The signal strength values of the candidate cells in adjacent time periods are greater than a preset signal strength threshold.

Subsequently, the target terminal sends the determined identity of the target cell to the serving base station of the target terminal. Correspondingly, after receiving the identity of the target cell, the serving base station of the target terminal generates a handover instruction message, which is used to instruct the target terminal to switch to the target cell at a preset time.

It can be understood that, based on the candidate cells determined from the plurality of coverage cells in step S203 above, since each candidate cell can meet the performance requirements of the target terminal at the preset time, the matching between the cell capability and the terminal capability is realized, In the subsequent process, after the serving base station of the target terminal selects the target cell from the candidate cells, the target cell can guarantee the normal access of the target terminal and meet the network capability requirements of the target terminal, and at the same time, the first one in the target sequence that meets the target terminal’s The candidate cell of the handover condition is determined as the target cell, and the candidate cell with a larger service performance characteristic value is determined as the target cell, thereby improving the service performance response of the terminal after switching to the target cell.

It can be understood that in the embodiment of the present invention, when determining the target cell, from the candidate cells whose service performance parameters can meet the performance requirements of the terminal, determine the cell whose signal strength meets the requirements as the target cell, which not only ensures the security of the terminal after switching to the target cell The service performance is not affected, and the signal strength of the target cell at the location of the target terminal is better, ensuring that the target terminal can successfully access the target cell and improving the handover success rate.

In one design, when the preset time is a time after the current time, in order to realize the prediction of the location information of the target terminal, as shown in FIG. 3 , the terminal switching method provided by the embodiment of the present invention further includes S301-S303.

S301. The network device acquires multiple pieces of historical location information corresponding to multiple historical moments of the target terminal.

Wherein, one piece of historical location information corresponds to one historical moment.

It should be noted that, for the network device to obtain multiple pieces of historical location information corresponding to multiple historical moments of the target terminal, reference may be made to the method recorded in the above step S201 , which will not be repeated here.

Exemplarily, the above-mentioned multiple historical moments are historical moments within a preset historical time period, assuming that the preset historical time period is 7*24 hours before the current moment, a time period is 24 hours, and the preset time granularity If it is 5 minutes, a time cycle is divided into 60/5*24=288 unit time periods, a historical moment is any moment corresponding to a unit time period in the preset historical time period, and a historical moment corresponds to a unit time period.

Based on the above settings, the historical moment of a time period in the preset historical time period can be expressed as [T ₁ , T ₂ ,...,T ₂₈₈ ]; the historical moment in the preset historical time period [T ₁ , T ₂ ,...,T _288*7 ].

Correspondingly, the network device acquires the location information of the target terminal at each historical moment, and generates a binary value (T _i , P _i ) for each historical moment and the location information of the corresponding target terminal, where T _i is the preset history A historical moment in time, P _i is the location information of the target terminal corresponding to the historical moment T _i . The multiple pieces of historical location information corresponding to the above target terminal at multiple historical moments may be expressed as [(T ₁ , P ₁ ), . . . , (T _288*7 , P _288*7 )].

S302. The network device trains the preset first neural network to obtain a first prediction model.

Wherein, the first prediction model is used to represent the mapping relationship between the time and the location information of the target terminal. The above-mentioned first neural network may adopt models such as a Bayesian model (DB), an artificial neural network (ANN), and a gradient boosting decision tree (GDBT), which are not limited in this embodiment of the present invention.

As a possible implementation, the network device uses each historical moment as a feature, uses historical location information corresponding to each historical moment as a label, and trains a preset first neural network to obtain a first prediction model.

Exemplarily, the network device uses each historical moment T _i obtained in the above step S301 as a feature, uses the historical position information P _i corresponding to each historical moment as a label, trains the preset first neural network, and establishes the first neural network. A prediction model, expressed as P _i =f(T _i ), the output is the position information of the target terminal corresponding to the input time.

S303. The network device predicts the location information of the target terminal at a preset time.

As a possible implementation, when the preset time is a time after the current time, the network device inputs the preset time into the first prediction model, and the first prediction model outputs the predicted position of the target terminal at the preset time information.

Exemplarily, the network device inputs the preset time t ₅ into the first prediction model P _i =f(T _i ), the first prediction model outputs position information p ₅ corresponding to the preset time t ₅ , and the network device determines that the target terminal is at The position information at the preset moment is p ₅ .

In some embodiments, the network device may input multiple preset times into the first prediction model, so as to predict the location information of the target terminal corresponding to the multiple preset times.

Exemplarily, the network device inputs multiple preset times [t ₁ , t ₂ ,...,t ₂₈₈ ] in each unit time period within a time period after the current time into the first prediction model P _i =f (T _i ), the first prediction model outputs the predicted location information [p ₁ , p ₂ , . . . , p ₂₈₈ ] corresponding to the target terminal at multiple preset moments.

It can be understood that the network device establishes a first prediction model based on the acquired location information of the target terminal within a preset historical time, determines the location information of the target terminal after the current time through the first prediction model, and predicts the location of the target terminal information, the mobile trajectory of the terminal in the future can be obtained in advance, and then the target cell for the target terminal handover can be determined in advance, transmission resources can be allocated, etc., reducing the handover delay and improving the terminal handover performance.

In one design, in order to enable the target terminal to obtain better service performance after accessing the target cell, as shown in FIG. 4 , the terminal handover method provided by the embodiment of the present invention further includes S401-S403.

S401. The network device determines the service performance characteristic value of each candidate cell.

Wherein, the service performance characteristic value of each candidate cell is used to represent the service performance provided by each candidate cell to the target terminal.

It should be noted that the service performance provided by each candidate cell to the target terminal may be, when each candidate cell accesses the candidate cell at a position corresponding to the target terminal at a preset time, the service performance that the candidate cell can provide to the target terminal . The larger the characteristic value of service performance, the better the service performance that the target terminal can obtain after accessing the candidate cell, the smaller the deviation of service performance at different times, the smaller the fluctuation of service performance, and the better the consistency of service performance.

As a possible implementation, if the service performance characteristic value is determined by the service performance parameters at multiple moments in the historical time, the network device obtains multiple service performance parameters corresponding to the candidate cells at multiple moments in the preset historical time , based on the obtained plurality of service performance parameters, substituting into a preset service performance characteristic value calculation formula to determine the service performance characteristic value of the candidate cell.

It should be noted that the calculation formula of the above preset service performance characteristic value may be:

Among them, the value of Z is the characteristic value of the service performance of the candidate cell; zi is the service performance parameter value corresponding to the i-th historical moment of the candidate cell, k is a preset coefficient, k≠0; C is the preset service performance parameter The value is a preset fixed value; u is the average value of multiple service performance parameters of the candidate cell obtained by the network equipment,

It should be noted that the service performance parameter is used to characterize the service quality of the service provided by the cell to the terminal at the corresponding moment, wherein the value of the service performance parameter is the weighted sum of one or more of the parameters such as service rate and service delay, and the service performance The larger the value of the parameter, the better the corresponding service quality, that is, the higher the service rate and the smaller the service delay.

As another possible implementation, if the service performance characteristic value is determined by the service performance parameters at multiple moments in the future, the network device first predicts the service performance parameters at multiple moments in the future, and based on the predicted The service performance parameters of the candidate cell are substituted into the preset service performance characteristic value calculation formula to determine the service performance characteristic value of the candidate cell.

It should be noted that how to implement the prediction of the service performance parameters at multiple time points in the future by the network device may refer to the subsequent description of the embodiment of the present invention, which will not be repeated here.

S402. The network device sorts at least one candidate cell according to the service performance characteristic value of each candidate cell to obtain a target sequence.

Wherein, the target sequence includes an identifier of at least one candidate cell.

As a possible implementation, the network device arranges the identifiers of each candidate cell in descending order based on the service performance characteristic value of each candidate cell determined in the above step S401 according to the size of the service performance characteristic value, and obtains the The target sequence after eigenvalue reordering.

Exemplarily, if the identity of at least one candidate cell includes cell1, cell2, and cell3, wherein the service performance of each candidate cell is Z _cell1 =Z1, Z _cell2 =Z2, Z _cell3 =Z3, if Z1>Z3>Z2, Then cell1, cell2, and cell3 are reordered to obtain the target sequence {cell1, cell3, cell2}.

S403. The network device sends the target sequence to the serving base station of the target terminal.

Correspondingly, the serving base station of the target terminal receives the target sequence sent by the network device, and determines the magnitude relationship of service performance characteristic values between at least one candidate cell.

It can be understood that, through the reordering of at least one candidate cell by the network device, each candidate cell is sorted in descending order according to the size of the service characteristic value, and the candidate cell with a larger service performance characteristic value is ranked first, so that the target terminal In the subsequent process, based on the service performance characteristic value, the serving base station determines the first candidate cell in the target sequence that satisfies the handover condition of the target terminal as the target cell, and then determines the candidate cell with a larger service performance characteristic value as the target cell, so that the target After the terminal accesses the target cell, it can obtain better service performance.

In one design, in order to realize the prediction of service performance characteristic values of candidate cells, as shown in FIG. 5 , the terminal handover method provided by the embodiment of the present invention further includes S501-S502.

S501. The network device determines multiple target service performance parameters corresponding to multiple target times for each candidate cell.

Wherein, a target time corresponds to a target service performance parameter, and each target time is a time after the current time, and each target service performance parameter is used to represent the service quality of a candidate cell for providing services to the target terminal at different target times.

As a possible implementation manner, the network device determines the first target time, the spectrum efficiency of the target terminal, and the location information of the target terminal at the first target time. Further, the network device predicts the target service performance parameter corresponding to each candidate cell at the first target time based on the first target time, the spectrum efficiency of the target terminal, the location information of the target terminal at the first target time, and the second prediction model.

It should be noted that the first target time is any one of multiple target times; the second prediction model is used to characterize the target service performance corresponding to the spectral efficiency of the terminal, the location information of the terminal, and the candidate cell of the terminal at different target times The mapping relationship of parameters.

It should be noted that the spectral efficiency of the target terminal is the amount of data that can be transmitted per unit spectrum, according to the coding and modulation mode supported by the target terminal, carrier aggregation capability, multiple-input multiple-out-put (MIMO) stream number, etc. The transmission function is determined; the higher the code modulation order supported by the target terminal, the greater the number of carrier aggregation, and the greater the number of MIMO streams, the greater the spectral efficiency value of the target terminal; the spectral efficiency of each terminal is sent by each terminal through an air interface message to The base station equipment accessed by the terminal; the network equipment acquires the spectrum efficiency of each terminal by sending a spectrum efficiency request acquisition message to the base station equipment, wherein the spectrum efficiency request acquisition message includes the identification of the terminal.

It should be noted that for the location information of the target terminal at the first target time, the location information of the target terminal at the first target time can be determined by referring to the method described in step S201 in the embodiment of the present invention.

It should be noted that after the network device determines the first target time, the spectral efficiency of the target terminal, and the location information of the target terminal at the first target time, for any candidate cell, how to pass the first target time, the spectral efficiency of the target terminal, The location information of the target terminal at the first target time and the trained second prediction model predict the target service performance parameters corresponding to the candidate cell at the first target time, as shown in FIG. 6 , the terminal handover method provided by the embodiment of the present invention, Also includes S5011-S5013.

S5011. The network device acquires multiple sample service performance parameters corresponding to each candidate cell at multiple historical moments, spectrum efficiency of the first terminal, and location information of the first terminal at each historical moment.

Wherein, a historical moment corresponds to a sample service performance parameter, and each sample service performance parameter is used to characterize the service quality of a candidate cell providing services for the first terminal at different historical moments; the first terminal is any one in each candidate cell terminal.

It should be noted that the network device obtains multiple sample service performance parameters corresponding to each candidate cell at multiple historical moments, the spectrum efficiency of the first terminal, and the location information of the first terminal at each historical moment, which can refer to the embodiment of the present invention The method recorded in the above step S501 will not be repeated here.

Exemplarily, based on the same setting shown in the above step S301 of the embodiment of the present invention, the historical moment of a time period within the preset historical time period can be expressed as [T ₁ , T ₂ ,...,T ₂₈₈ ]; Historical moments [T ₁ , T ₂ , . . . , T _288*7 ] within a preset historical time period.

The spectral efficiency of the first terminal corresponding to multiple historical moments in the historical time period obtained by the network device can be expressed as [X ₁ ,X ₂ ,...,X _288*7 ]; the historical time period obtained by the network device and The location information of the first terminal corresponding to multiple historical moments can be expressed as [Y ₁ , Y ₂ ,...,Y _288*7 ]; the network device obtains multiple sample service performances corresponding to each candidate cell at multiple historical moments The parameters can be expressed as [Z ₁ , Z ₂ , . . . , Z _288*7 ]. Furthermore, it can be determined that within the preset historical time, the sample parameters corresponding to the target terminal accessing a candidate cell can be expressed as [(T ₁ ,X ₁ ,Y ₁ ,Z ₁ ),(T ₂ ,X ₂ ,Y ₂ , Z ₂ ),...,(T _288*7 ,X _288*7 ,Y _288*7 ,Z _288*7 )].

S5012. The network device trains the preset second neural network to obtain a second prediction model.

Wherein, the second neural network may adopt regression models, such as Linear Regression, Polynomial Regression, Ridge Regression and other regression models, which are not limited in the embodiment of the present invention.

As a possible implementation, the network device takes the spectral efficiency of the first terminal, the location information of the first terminal at each historical moment, and each historical moment as features, and uses the sample service corresponding to each candidate cell at each historical moment The performance parameter is used as a label, and the preset second neural network is trained to obtain a second prediction model.

Exemplarily, the network device takes the spectral efficiency X _i of the first terminal obtained in the above step S5011, the location information Y _i of the first terminal at each historical moment, and each historical moment T _i as features, and classifies each candidate cell at The sample service performance parameter Z _i corresponding to each historical moment is used as a label, and the preset second neural network is trained to establish a second prediction model, which is expressed as Z _i =f(T _i ,X _i ,Y _i ), and the output The quantity is the service performance parameter corresponding to the input moment.

S5013. The network device predicts a target service performance parameter corresponding to each candidate cell at the first target moment.

Wherein, the first target time is any one of multiple target times; the second prediction model is used to characterize the spectral efficiency of the terminal, the location information of the terminal and the target service performance parameters corresponding to the candidate cells of the terminal at different target times Mapping relations.

As a possible implementation, the network device inputs the first target time, the spectral efficiency of the target terminal, and the location information of the target terminal at the first target time into the second prediction model, and predicts each candidate cell at the first target time. Target business performance parameters.

Exemplarily, if the first target time is t ₇ , the spectral efficiency of the target terminal is x ₇ , and the location information of the target terminal at the first target time is y ₇ , the network device inputs each data into the second prediction model Z _i =f (T _i ,X _i ,Y _i ), the second prediction model outputs the target service performance parameter z ₇ corresponding to the first target moment.

In some embodiments, the network device may input multiple target times into the second prediction model, so as to predict multiple target service performance parameters corresponding to the multiple target times of the candidate cell.

Exemplarily, the network device sets the multiple target times [t ₁ , t ₂ ,...,t ₂₈₈ ] in each unit time period within a time period after the current time, and correspondingly, the Spectrum efficiency [x ₁ , x ₂ ,…,x ₂₈₈ ], multiple location information [y ₁ ,y ₂ ,…,y ₂₈₈ ] corresponding to target terminals at multiple target moments, input to the second prediction model Z _i = f(T _i ,X _i ,Y _i ), the second prediction model outputs multiple target service performance parameters [z ₁ ,z ₂ ,...,z ₂₈₈ ] corresponding to the predicted candidate cells at multiple target moments.

S502. The network device determines a service performance characteristic value of each candidate cell according to multiple target service performance parameters.

It should be noted that how to specifically realize multiple target service performance parameters of network equipment and determine the service performance characteristic value of each candidate cell can refer to the method for determining the service performance characteristic value recorded in the above-mentioned step S401 of the embodiment of the present invention, which is not described here. Let me repeat.

In one design, in order to enable the serving base station of the target terminal to determine a target cell with better service performance for the target terminal, as shown in FIG. 7 , the terminal switching method provided by the embodiment of the present invention further includes S601-S602.

S601. The serving base station of the target terminal acquires an identifier of at least one candidate cell.

As a possible implementation manner, the serving base station of the target terminal receives the target sequence sent by the network device and includes the identifier of at least one candidate cell.

It should be noted that the target sequence is obtained by sorting at least one candidate cell in descending order according to the service performance characteristic value of each candidate cell.

It should be noted that how the network device sorts the at least one candidate cell to obtain the target sequence can refer to the above step S402 in the embodiment of the present invention, which will not be repeated here.

S602. The serving base station of the target terminal determines the target cell.

Wherein, the target cell is the first cell that satisfies the handover condition of the target terminal based on the order in the target sequence.

Wherein, the handover condition may be that the signal strength value of the candidate cell is greater than a preset signal strength threshold at an adjacent time before the preset time.

As a possible implementation, if the target sequence obtained by the serving base station of the target terminal in the above step S601 is a sequence arranged in descending order according to the size of the service performance characteristic value, the serving base station of the target terminal starts to judge from the first candidate cell, Determine whether the signal strength value of the candidate cell is greater than the preset signal strength threshold in turn, until the determined signal strength value of the candidate cell is greater than the preset signal strength threshold, and determine that the candidate cell is the target cell.

It should be noted that the foregoing signal strength threshold may be pre-set in the base station device by the operation and maintenance personnel of the base station device.

Exemplarily, if the target sequence is {cell ₁ , cell ₂ , cell ₃ , cell ₄ }, the preset signal strength threshold is -90dBm. The signal strength value of cell ₁ is -100dBm, the signal strength value of cell ₂ is -80dBm, the signal strength value of cell ₃ is -70dBm, and the signal strength value of cell ₄ is -100dBm. Further, the serving base station of the target terminal sequentially determines whether each candidate cell satisfies the above handover condition, and based on the signal strength values of each candidate cell, it can determine that cell ₂ is the target cell.

In some embodiments, if the target sequence acquired by the serving base station of the target terminal is a sequence arranged in ascending order according to the size of the service performance characteristic value, the serving base station of the target terminal judges from the last one in the sequence, and sequentially determines the signal of the candidate cell Whether the strength value is greater than the preset signal strength threshold, until the determined signal strength value of the candidate cell is greater than the preset signal strength threshold, the candidate cell is determined to be the target cell.

In one design, in order to reduce the time delay when the target terminal performs handover, as shown in FIG. 8 , the terminal handover method provided by the embodiment of the present invention further includes S701-S702.

S701. Before a preset time, the target base station determines a target transmission resource for the target cell to provide services for the target terminal.

Wherein, the target cell is a cell satisfying the handover condition of the target terminal among at least one candidate cell, each candidate cell covers the target terminal at a preset time, and the service performance parameters of each candidate cell meet the performance requirement of the target terminal at a preset time.

It should be noted that the target transmission resources include target transmission power and/or target PRB resources; the target transmission power is positively correlated with the target transmission distance, and the target transmission distance is the distance between the target terminal and the target base station; the target PRB resource and the target terminal The maximum bandwidth supported is positively related.

As a possible implementation, after determining the target cell in the above step S205, the serving base station of the target terminal sends the performance requirements of the target terminal, the location information of the target terminal at a preset time, and the identity of the target cell to the target base station, It is used to indicate that the target terminal will switch to the target cell at a preset time. Correspondingly, the target base station determines the target cell based on the received message, and determines the target transmission resources required by the target cell to provide services for the target terminal based on the performance requirements of the target terminal.

It should be noted that the target base station determines the power value of service data transmission allocated by the target cell to the target terminal = maximum transmit power of the target cell * distance between the target terminal and the target cell / maximum coverage distance of the target cell. Among them, the distance Di between the target terminal and the target cell can be determined according to the location information Pi of the target terminal corresponding to the preset time, the longitude and latitude of the grid where the target terminal is located, the longitude and latitude of the base station equipment to which the target cell belongs, and the maximum emission of the target cell. The power and the maximum coverage distance of the target cell can be preset in the target base station. In this way, the target base station can configure the service data transmission power for the target terminal in advance when the target terminal does not access the target cell, and the farther the target terminal is from the target base station, the power allocated by the target base station to the target terminal The larger the , the greater the signal strength received at the location of the terminal can meet the requirements for the terminal to normally access the target cell, ensuring the success rate of the terminal accessing the target cell.

It should be noted that the target base station determines the number of PRBs allocated by the target cell to the terminal=the total number of available PRBs of the target cell*the maximum bandwidth supported by the target terminal/the maximum bandwidth supported by the target cell. Among them, the number of available PRBs in the target cell is the difference between the total number of PRBs in the target cell and the number of PRBs allocated for service data transmission in the target cell; the maximum bandwidth supported by the target terminal can be obtained from the performance requirements of the target terminal; the maximum bandwidth supported by the target cell The bandwidth is preset in the base station equipment to which the target cell belongs. In this way, the target base station can configure PRBs for the target terminal in advance when the target terminal does not access the target cell, and the larger the bandwidth supported by the target terminal, the more PRB resources are allocated for the target terminal, satisfying The maximum transmission capability of the target terminal is required to improve the service transmission performance of the target terminal; the smaller the bandwidth supported by the target terminal, the less PRB resources are allocated to the target terminal, avoiding waste of cell resources.

S702. After the target terminal is handed over to the target cell, the target base station provides a service for the target terminal based on the target transmission resource.

As a possible implementation manner, after the target terminal is handed over to the target cell, the target base station allocates the target transmission resource determined in step S701 to the target terminal.

It can be understood that the target base station allocates target transmission resources for the target terminal according to the bandwidth capability and location information of the target terminal, and realizes on-demand allocation of cell transmission resources such as PRB and power, which can meet the service transmission needs of the target terminal and avoid resource loss. Waste; and realize that before the target terminal moves to the target cell, the target cell is determined in advance, cell transmission resources are reserved for the target terminal, and preparations before handover are made. When the target terminal moves to the corresponding position within the coverage of the target cell, There is no need to perform handover preparation processes such as terminal measurement reporting, handover judgment, and target cell resource allocation, which minimizes handover delay and improves handover performance.

The present invention provides a terminal handover method, device, equipment, and storage medium. In the terminal handover method provided by the present invention, the target cell to be handed over by the target terminal is confirmed from candidate cells that meet the performance requirements of the target terminal. Such a This ensures that the target cell can meet the performance requirements of the target terminal, improves the service performance of the terminal after handover, shortens the handover delay, improves the handover performance, and guarantees the service experience of the terminal.

The foregoing mainly introduces the solutions provided by the embodiments of the present invention from the perspective of methods. In order to realize the above functions, it includes corresponding hardware structures and/or software modules for performing various functions. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the embodiments of the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

The embodiments of the present invention may divide the user equipment into functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. Optionally, the division of modules in this embodiment of the present invention is schematic, and is only a logical function division, and there may be another division manner in actual implementation.

FIG. 9 is a schematic structural diagram of a network device provided by an embodiment of the present invention. The network device is used to execute the above terminal switching method. As shown in FIG. 9 , the network device 80 includes a determining unit 801 , a sending unit 802 , an acquiring unit 803 and a processing unit 804 .

The determining unit 801 is configured to determine the location information of the target terminal at a preset time. For example, as shown in FIG. 2 , the determining unit 801 may be configured to perform S201.

The determining unit 801 is further configured to determine multiple coverage cells that simultaneously cover the target terminal at the preset time according to the location information of the target terminal at the preset time. For example, as shown in FIG. 2 , the determining unit 801 may be configured to execute S202.

The determining unit 801 is further configured to determine at least one candidate cell from multiple coverage cells. The service performance parameters of each candidate cell meet the performance requirements of the target terminal at a preset moment. For example, as shown in FIG. 2 , the determining unit 801 may be configured to perform S203.

The sending unit 802 is configured to send the target sequence to multiple base stations in the preset area, so that the serving base station of the target terminal instructs the target terminal to switch to the target cell at a preset time, and the target cell is at least one candidate cell that satisfies the target terminal switching conditions of the district. The target sequence includes the identity of at least one candidate cell. The serving base station of the target terminal is the serving base station accessed by the target terminal at the previous adjacent time of the preset time, and belongs to a certain base station in the preset area. Multiple coverage cells belong to Multiple base stations within a predetermined area. For example, as shown in FIG. 2 , the sending unit 802 may be configured to execute S205.

Optionally, as shown in FIG. 9 , the network device 80 provided in this embodiment of the present invention further includes an acquiring unit 803 .

The acquiring unit 803 is configured to acquire the latitude and longitude information of the target terminal at the preset moment, and the latitude and longitude information of the center position of each grid in the preset area.

The determining unit 801 is further configured to determine the distance between the target terminal and the center position of each grid.

The determining unit 801 is further configured to determine the grid identifier of the grid with the shortest distance from the target terminal as the location information of the target terminal.

Optionally, as shown in FIG. 9, in the network device 80 provided by the embodiment of the present invention, the determining unit 801 is specifically configured to predict the location information of the target terminal at the preset time according to the preset time and the first prediction model; A prediction model is used to represent the mapping relationship between the time and the location information of the target terminal. For example, as shown in FIG. 3 , the determining unit 801 may be configured to perform S303.

Optionally, as shown in FIG. 9 , the network device 80 provided in this embodiment of the present invention further includes a processing unit 804 .

The acquiring unit 803 is configured to acquire multiple pieces of historical location information corresponding to multiple historical moments of the target terminal. A piece of historical location information corresponds to a historical moment. For example, as shown in FIG. 3 , the acquiring unit 803 may be configured to execute S301.

The processing unit 804 is configured to use each historical moment as a feature and historical position information corresponding to each historical moment as a label to train a preset first neural network to obtain a first prediction model. For example, as shown in FIG. 3 , the processing unit 804 may be configured to execute S302.

Optionally, the service performance parameters of the candidate cell include at least one of the maximum bandwidth supported by the candidate cell, the frequency range, the network standard set, the public land mobile network PLMN identification set, and the network slice identification set; the service performance parameters of each candidate cell Satisfying the performance requirements of the target terminal at the preset time includes at least one of the following conditions: the maximum bandwidth supported by the candidate cell is greater than or equal to the maximum bandwidth supported by the target terminal, the frequency range supported by the target terminal is within the frequency range supported by the candidate cell, The set of network standards supported by the candidate cell includes the network standard supported by the target terminal, the set of PLMN identifiers supported by the candidate cell includes the PLMN identifier supported by the target terminal, and the set of network slice identifiers supported by the candidate cell includes the network slice identifier supported by the target terminal.

Optionally, as shown in FIG. 9 , in the network device 80 provided by the embodiment of the present invention, the determining unit 801 is further configured to determine the service performance characteristic value of each candidate cell. The service performance characteristic value of each candidate cell is used to characterize the service performance provided by each candidate cell to the target terminal. For example, as shown in FIG. 4 , the determining unit 801 may be configured to perform S401.

The processing unit 804 is further configured to sort at least one candidate cell according to the service performance characteristic value of each candidate cell to obtain a target sequence. The target sequence includes the identification of at least one candidate cell. For example, as shown in FIG. 4, the processing unit 804 may be configured to execute S402.

The sending unit 802 is further configured to send the target sequence to the serving base station of the target terminal. For example, as shown in FIG. 4 , the sending unit 802 may be configured to perform S403.

Optionally, as shown in FIG. 9 , in the network device 80 provided by the embodiment of the present invention, the determining unit 801 is further configured to determine multiple target service performance parameters corresponding to multiple target times for each candidate cell. A target time corresponds to a target service performance parameter, and each target time is a time after the current time, and each target service performance parameter is used to represent the service quality of a candidate cell for providing services to the target terminal at different target times. For example, as shown in FIG. 5 , the determining unit 801 may be configured to perform S501.

The determining unit 801 is further configured to determine a service performance characteristic value of each candidate cell according to multiple target service performance parameters. For example, as shown in FIG. 5 , the determining unit 801 may be configured to execute S502.

Optionally, as shown in FIG. 9, in the network device 80 provided by the embodiment of the present invention, the determining unit 801 is specifically configured to: And a second prediction model, predicting a target service performance parameter corresponding to each candidate cell at the first target moment. The first target moment is any one of multiple target moments; the second prediction model is used to represent the mapping relationship between the spectral efficiency of the terminal, the location information of the terminal and the target service performance parameters corresponding to the candidate cells of the terminal at different target moments . For example, as shown in FIG. 6 , the determining unit 801 may be configured to execute S5013.

Optionally, as shown in FIG. 9, in the network device 80 provided by the embodiment of the present invention, the acquiring unit 801 is also configured to acquire multiple sample service performance parameters, first terminal The spectral efficiency of and the location information of the first terminal at each historical moment. A historical moment corresponds to a sample service performance parameter, and each sample service performance parameter is used to characterize the service quality of a candidate cell providing services to the first terminal at different historical moments; the first terminal is any terminal in each candidate cell. For example, as shown in FIG. 6 , the acquiring unit 803 may be configured to execute S5011.

The processing unit 804 is further configured to use the spectral efficiency of the first terminal, the location information of the first terminal at each historical moment, and each historical moment as features, and use the sample service performance parameters corresponding to each candidate cell at each historical moment as label, and train the preset second neural network to obtain the second prediction model. For example, as shown in FIG. 6, the processing unit 804 may be configured to execute S5012.

FIG. 10 is a schematic structural diagram of a base station device 90 provided by an embodiment of the present invention, and the base station device is used to execute the above terminal handover method. As shown in FIG. 10 , the base station device 90 includes an acquiring unit 901 and a processing unit 902 .

The acquiring unit 901 is configured to acquire an identifier of at least one candidate cell. Each candidate cell covers the target terminal at a preset time, and the service performance parameters of each candidate cell meet the performance requirements of the target terminal at a preset time. For example, as shown in FIG. 7 , the acquiring unit 901 may be configured to perform S601.

The processing unit 902 is configured to instruct the target terminal to switch to the target cell at a preset time according to the identity of at least one candidate cell. The target cell is a cell that satisfies the handover condition of the target terminal among at least one candidate cell. For example, as shown in FIG. 7, the processing unit 902 may be configured to execute S602.

Optionally, in the base station device 90 provided in the embodiment of the present invention, the obtaining unit 901 is also configured to receive the target sequence sent by the network device. The target sequence sorts at least one candidate cell according to the service performance characteristic value of each candidate cell, and the target sequence includes an identifier of at least one candidate cell. The target cell is the first cell that satisfies the handover condition of the target terminal based on the sequence in the target sequence.

FIG. 11 is a schematic structural diagram of a base station device 100 provided by an embodiment of the present invention, and the base station device is used to execute the above terminal handover method. As shown in FIG. 11 , the base station device 100 includes a determining unit 1001 and a processing unit 1002 . Among them, the base station device is the target base station to which the target cell belongs; the target cell is a cell that satisfies the switching conditions of the target terminal among at least one candidate cell, each candidate cell covers the target terminal at a preset time, and the service performance parameters of each candidate cell are in The preset time meets the performance requirements of the target terminal.

The determining unit 1001 is configured to determine a target transmission resource for a target cell to serve a target terminal before a preset time. For example, as shown in FIG. 8 , the determining unit 1001 may be used to execute S701.

The processing unit 1002 is configured to provide a service for the target terminal based on the target transmission resource after the target terminal is handed over to the target cell. For example, as shown in FIG. 8, the processing unit 1002 may be configured to execute S702.

Optionally, the target transmission resource includes target transmission power, and/or, target PRB resource; the target transmission power is positively correlated with the target transmission distance, and the target transmission distance is the distance between the target terminal and the target base station; the target PRB resource and the target terminal The maximum bandwidth supported is positively related.

In the case that the functions of the above-mentioned integrated modules are implemented in the form of hardware, the embodiment of the present invention provides a schematic structural diagram of a possible network device. The network device is configured to execute the communication method executed by the network device in the foregoing embodiments. As shown in FIG. 12 , the network device 110 includes a processor 1101 , a memory 1102 and a bus 1103 . The processor 1101 and the memory 1102 may be connected through a bus 1103 .

The processor 1101 is the control center of the network device, and may be one processor, or may be a general term for multiple processing elements. For example, the processor 1101 may be a general-purpose central processing unit (central processing unit, CPU), or other general-purpose processors. Wherein, the general-purpose processor may be a microprocessor or any conventional processor.

As an embodiment, the processor 1101 may include one or more CPUs, such as CPU 0 and CPU 1 shown in FIG. 12 .

The memory 1102 may be a read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, a random access memory (random access memory, RAM) or other types that can store information and instructions The dynamic storage device can also be an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a magnetic disk storage medium or other magnetic storage devices, or can be used to carry or store instructions or data structures desired program code and any other medium that can be accessed by a computer, but is not limited thereto.

As a possible implementation manner, the memory 1102 may exist independently of the processor 1101 , and the memory 1102 may be connected to the processor 1101 through the bus 1103 to store instructions or program codes. When the processor 1101 invokes and executes instructions or program codes stored in the memory 1102, the communication method provided by the embodiment of the present invention can be implemented.

In another possible implementation manner, the memory 1102 may also be integrated with the processor 1101 .

The bus 1103 may be an Industry Standard Architecture (Industry Standard Architecture, ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus, etc. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 12 , but it does not mean that there is only one bus or one type of bus.

It should be noted that the structure shown in FIG. 12 does not limit the network device 110 . In addition to the components shown in FIG. 12 , the network device 110 may include more or fewer components than those shown in FIG. 12 , or combine certain components, or have different component arrangements.

As an example, with reference to FIG. 9 , the functions implemented by the determining unit 801 , the sending unit 802 , the acquiring unit 803 and the processing unit 804 in the network device 80 are the same as those of the processor 1101 in FIG. 12 .

Optionally, as shown in FIG. 12 , the network device provided in this embodiment of the present invention may further include a communication interface 1104 .

The communication interface 1104 is used to connect with other devices through the communication network. The communication network may be Ethernet, wireless access network, wireless local area network (wireless local area networks, WLAN) and so on. The communication interface 1104 may include a receiving unit for receiving data, and a sending unit for sending data.

In one design, in the network device provided by the embodiment of the present invention, the communication interface may also be integrated in the processor.

Fig. 13 shows another hardware structure of the network device in the embodiment of the present invention. As shown in FIG. 13 , the network device 120 may include a processor 1201 and a communication interface 1202 . Processor 1201 is coupled with communication interface 1202 .

For functions of the processor 1201, reference may be made to the description of the processor 1101 above. In addition, the processor 1201 also has a storage function, and reference may be made to the function of the above-mentioned memory 1102 .

The communication interface 1202 is used to provide data to the processor 1201 . The communication interface 1202 may be an internal interface of the network device, or an external interface of the network device (equivalent to the communication interface 1104).

It should be pointed out that the structure shown in FIG. 13 does not constitute a limitation on the network device. Except for the components shown in FIG. some components, or a different arrangement of components.

Meanwhile, for a schematic structural diagram of hardware of another base station device provided by an embodiment of the present invention, reference may also be made to the description of the network device in FIG. 12 or FIG. 13 , and details are not repeated here. The difference is that the processor included in the base station device is used to execute the steps performed by the base station device in the above embodiments.

Through the above description of the implementation, those skilled in the art can clearly understand that, for the convenience and brevity of the description, only the division of the above functional units is used as an example for illustration. In practical applications, the above function allocation can be completed by different functional units according to needs, that is, the internal structure of the device is divided into different functional units, so as to complete all or part of the functions described above. For the specific working process of the above-described system, device, and unit, reference may be made to the corresponding process in the foregoing method embodiments, and details are not repeated here.

An embodiment of the present invention also provides a computer-readable storage medium, in which instructions are stored. When a computer executes the instructions, the computer executes each step in the method flow shown in the above-mentioned method embodiments.

An embodiment of the present invention provides a computer program product containing instructions, and when the instructions are run on a computer, the computer is made to execute the terminal switching method in the above method embodiments.

Wherein, the computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples (non-exhaustive list) of computer readable storage media include: electrical connection having one or more wires, portable computer disk, hard disk. Random Access Memory (Random Access Memory, RAM), Read-Only Memory (Read-Only Memory, ROM), Erasable Programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), registers, hard disk, optical fiber, portable compact Disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any other form of computer-readable storage medium in a suitable combination of the above, or values in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be a component of the processor. The processor and the storage medium may be located in an application specific integrated circuit (Application Specific Integrated Circuit, ASIC). In the embodiments of the present invention, a computer-readable storage medium may be any tangible medium containing or storing a program, and the program may be used by or in combination with an instruction execution system, apparatus or device.

Since the device, device, computer-readable storage medium, and computer program product in the embodiments of the present invention can be applied to the above methods, the technical effects that can be obtained can also refer to the above method embodiments, and the embodiments of the present invention are not described herein Let me repeat.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or replacements within the technical scope disclosed in the present invention shall be covered within the protection scope of the present invention . Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (26)

1. A terminal switching method, characterized in that, comprising: determining the location information of the target terminal at a preset time, and determining a plurality of coverage cells that simultaneously cover the target terminal at the preset time according to the location information of the target terminal at the preset time; Determining at least one candidate cell from the plurality of coverage cells; the service performance parameters of each candidate cell meet the performance requirements of the target terminal at the preset moment; determining a service performance characteristic value of each of the candidate cells, the service performance characteristic value of the candidate cell is used to characterize the service performance provided by the candidate cell to the target terminal, and the service performance characteristic value Among them, the value of Z is the characteristic value of the service performance of the candidate cell; zi is the service performance parameter value corresponding to the i-th historical moment of the candidate cell, k is a preset coefficient, k≠0; C is the preset service performance parameter The value is a preset fixed value; u is the average value of multiple service performance parameters of the candidate cell obtained by the network equipment, Sorting the at least one candidate cell according to the service performance characteristic value of each candidate cell to obtain a target sequence; the target sequence includes an identifier of the at least one candidate cell; sending the target sequence to multiple base stations in a preset area, so that the serving base station of the target terminal instructs the target terminal to switch to a target cell at the preset time, and the target cell is the at least one candidate A cell that satisfies the handover condition of the target terminal among the cells; the target sequence includes the identity of the at least one candidate cell, and the serving base station of the target terminal is the target terminal at an adjacent time before the preset time The accessed serving base station belongs to a certain base station in the preset area, and the multiple coverage cells belong to multiple base stations in the preset area. 2. The terminal switching method according to claim 1, wherein the preset time is a time before the current time; the determination of the location information of the target terminal at the preset time includes: Obtaining the latitude and longitude information of the target terminal at the preset moment, and the latitude and longitude information of the center position of each grid in the preset area; determining the distance between the target terminal and the center position of each grid; Determining the grid identifier of the grid with the shortest distance from the target terminal as the location information of the target terminal. 3. The terminal switching method according to claim 1, wherein the preset time is a time after the current time; the determination of the location information of the target terminal at the preset time includes: Predict the position information of the target terminal at the preset time according to the preset time and the first prediction model; the first prediction model is used to represent the mapping relationship between the time and the position information of the target terminal . 4. The terminal switching method according to claim 3, wherein the method further comprises: Obtaining a plurality of historical location information corresponding to the target terminal at a plurality of historical moments; one historical location information corresponds to one historical moment; Each historical moment is used as a feature, and the historical location information corresponding to each historical moment is used as a label, and the preset first neural network is trained to obtain the first prediction model. 5. The terminal switching method according to claim 1, wherein the service performance parameters of the candidate cell include the maximum bandwidth supported by the candidate cell, frequency range, network standard set, public land mobile network PLMN identification set and At least one of the set of network slice identifiers; The service performance parameters of the candidate cell meet the performance requirements of the target terminal at the preset time, including at least one of the following conditions: the maximum bandwidth supported by the candidate cell is greater than or equal to the maximum bandwidth supported by the target terminal , the frequency range supported by the target terminal is within the frequency range supported by the candidate cell, the set of network standards supported by the candidate cell includes the network standard supported by the target terminal, and the set of PLMN identities supported by the candidate cell includes the The PLMN identifier supported by the target terminal and the set of network slice identifiers supported by the candidate cell include the network slice identifier supported by the target terminal. 6. The terminal switching method according to claim 1, wherein said determining the service performance characteristic value of each of said candidate cells comprises: Determine a plurality of target service performance parameters corresponding to each of the candidate cells at a plurality of target moments, one target moment corresponds to a target service performance parameter, each target moment is a moment after the current moment, and each target service performance parameter is used To characterize the service quality of a candidate cell providing services for the target terminal at different target times; Determine a service performance characteristic value of each candidate cell according to the plurality of target service performance parameters. 7. The terminal switching method according to claim 6, wherein, for any candidate cell, determining a plurality of target service performance parameters corresponding to the candidate cell at a plurality of target moments comprises: Predict the target service corresponding to the candidate cell at the first target time according to the first target time, the spectral efficiency of the target terminal, the location information of the target terminal at the first target time, and a second prediction model Performance parameters; the first target time is any one of the multiple target times; the second prediction model is used to characterize the spectral efficiency of the terminal, the location information of the terminal, and the candidate cell of the terminal at different target times The mapping relationship of the corresponding target service performance parameters. 8. The terminal switching method according to claim 7, wherein the method further comprises: Obtain multiple sample service performance parameters corresponding to each of the candidate cells at multiple historical moments, the spectral efficiency of the first terminal, and the location information of the first terminal at each historical moment; one historical moment corresponds to one sample service performance Parameters, each sample service performance parameter is used to characterize the service quality of a candidate cell providing services to the first terminal at different historical moments; the first terminal is any terminal in each candidate cell; Taking the spectral efficiency of the first terminal, the location information of the first terminal at each historical moment at each historical moment, and each historical moment as features, and using the The sample service performance parameters are used as labels, and the preset second neural network is trained to obtain the second prediction model. 9. A terminal switching method, characterized in that it is applied to a serving base station of a target terminal, the method comprising: Acquiring the identity of at least one candidate cell; each candidate cell covers the target terminal at a preset time, and the service performance parameters of each candidate cell meet the performance requirements of the target terminal at the preset time; According to the identity of the at least one candidate cell, instruct the target terminal to switch to the target cell at the preset time, where the target cell is a cell in the at least one candidate cell that satisfies the handover condition of the target terminal; The acquiring the identity of at least one candidate cell specifically includes: receiving a target sequence; the target sequence sorts the at least one candidate cell according to the service performance characteristic value of each candidate cell, and the target sequence includes The identity of the at least one candidate cell, the service performance characteristic value Among them, the value of Z is the characteristic value of the service performance of the candidate cell; zi is the service performance parameter value corresponding to the i-th historical moment of the candidate cell, k is a preset coefficient, k≠0; C is the preset service performance parameter The value is a preset fixed value; u is the average value of multiple service performance parameters of the candidate cell obtained by the network equipment, The target cell is the first cell that satisfies the handover condition of the target terminal based on the order in the target sequence. 10. A terminal handover method, characterized in that it is applied to the target base station to which the target cell belongs, and the target cell is a cell that satisfies the handover condition of the target terminal among at least one candidate cell, and each candidate cell covers the The target terminal, and the service performance parameters of each candidate cell meet the performance requirements of the target terminal at the preset time; the target cell is included in the target sequence, and the target sequence is based on the Sorting by size of service performance characteristic values, service performance characteristic values of candidate cells Among them, the value of Z is the characteristic value of the service performance of the candidate cell; zi is the service performance parameter value corresponding to the i-th historical moment of the candidate cell, k is a preset coefficient, k≠0; C is the preset service performance parameter The value is a preset fixed value; u is the average value of multiple service performance parameters of the candidate cell obtained by the network equipment, The methods include: Before the preset time, determine a target transmission resource for the target cell to serve the target terminal, and after the target terminal is handed over to the target cell, set the target transmission resource for the target terminal based on the target transmission resource Provide services. 11. The terminal handover method according to claim 10, wherein the target transmission resource comprises a target transmission power, and/or a target physical resource block PRB resource; the target transmission power is positively correlated with a target transmission distance, The target transmission distance is the distance between the target terminal and the target base station; the target PRB resource is positively correlated with the maximum bandwidth supported by the target terminal. 12. A network device, comprising a determining unit and a sending unit; The determining unit is configured to determine the location information of the target terminal at a preset time; The determining unit is further configured to determine multiple coverage cells that simultaneously cover the target terminal at the preset time according to the location information of the target terminal at the preset time; The determining unit is further configured to determine at least one candidate cell from the plurality of coverage cells; the service performance parameters of each candidate cell meet the performance requirements of the target terminal at the preset time; The determining unit is further configured to determine a service performance characteristic value of each of the candidate cells, the service performance characteristic value of the candidate cell is used to represent the service performance provided by the candidate cell to the target terminal, and the service performance Performance characteristic value Among them, the value of Z is the characteristic value of the service performance of the candidate cell; zi is the service performance parameter value corresponding to the i-th historical moment of the candidate cell, k is a preset coefficient, k≠0; C is the preset service performance parameter The value is a preset fixed value; u is the average value of multiple service performance parameters of the candidate cell obtained by the network equipment, The determining unit is further configured to sort the at least one candidate cell according to the service performance characteristic value of each candidate cell to obtain the target sequence; the target sequence includes the at least one candidate cell logo; The sending unit is configured to send a target sequence to multiple base stations in a preset area, so that the serving base station of the target terminal instructs the target terminal to switch to a target cell at the preset time, and the target cell is A cell in the at least one candidate cell that satisfies the handover condition of the target terminal; the target sequence includes an identifier of the at least one candidate cell, and the serving base station of the target terminal is the target terminal at the preset time The serving base station accessed at the previous adjacent time belongs to a certain base station in the preset area, and the multiple coverage cells belong to multiple base stations in the preset area. 13. The network device according to claim 12, further comprising an acquisition unit; The acquiring unit is configured to acquire the latitude and longitude information of the target terminal at the preset moment, and the latitude and longitude information of the center position of each grid in the preset area; The determination unit is further configured to determine the distance between the target terminal and the center position of each grid; The determining unit is further configured to determine the grid identifier of the grid with the shortest distance from the target terminal as the position information of the target terminal. 14. The network device according to claim 12, wherein the determining unit is further configured to predict the location information of the target terminal at the preset time according to the preset time and the first prediction model ; The first prediction model is used to characterize the mapping relationship between the time and the location information of the target terminal. 15. The network device according to claim 14, further comprising an acquisition unit and a processing unit; The acquiring unit is configured to acquire multiple historical location information corresponding to the target terminal at multiple historical moments; one historical location information corresponds to one historical moment; The processing unit is configured to use each historical moment as a feature and the historical location information corresponding to each historical moment as a label to train a preset first neural network to obtain the first prediction model. 16. The network device according to claim 12, wherein the service performance parameters of the candidate cell include the maximum bandwidth supported by the candidate cell, frequency range, network standard set, public land mobile network PLMN identification set, and network Slicing identifies at least one of the set; The service performance parameters of the candidate cell meet the performance requirements of the target terminal at the preset time, including at least one of the following conditions: the maximum bandwidth supported by the candidate cell is greater than or equal to the maximum bandwidth supported by the target terminal , the frequency range supported by the target terminal is within the frequency range supported by the candidate cell, the set of network standards supported by the candidate cell includes the network standard supported by the target terminal, and the set of PLMN identities supported by the candidate cell includes the The PLMN identifier supported by the target terminal and the set of network slice identifiers supported by the candidate cell include the network slice identifier supported by the target terminal. 17. The network device according to claim 12, wherein the determining unit is further configured to determine multiple target service performance parameters corresponding to each of the candidate cells at multiple target times, one target time corresponding to one Target service performance parameters, each target time is a time after the current time, and each target service performance parameter is used to represent the service quality of a candidate cell for providing services to the target terminal at different target times; Determine a service performance characteristic value of each candidate cell according to the plurality of target service performance parameters. 18. The network device according to claim 17, wherein the determining unit is specifically configured to, according to the first target time, the spectral efficiency of the target terminal, and the frequency of the target terminal at the first target time location information and a second prediction model, predicting the target service performance parameter corresponding to the candidate cell at the first target time; the first target time is any one of the multiple target times; the second The prediction model is used to characterize the mapping relationship between the spectral efficiency of the terminal, the location information of the terminal and the target service performance parameters corresponding to the candidate cell of the terminal at different target moments. 19. The network device according to claim 18, comprising an acquisition unit and a processing unit; The acquiring unit is further configured to acquire multiple sample service performance parameters corresponding to each of the candidate cells at multiple historical moments, the spectrum efficiency of the first terminal, and the location information of the first terminal at each historical moment; A historical moment corresponds to a sample service performance parameter, and each sample service performance parameter is used to characterize the service quality of a candidate cell for providing services to the first terminal at different historical moments; Any terminal within; The processing unit is configured to use the spectral efficiency of the first terminal, the location information of the first terminal at each historical moment, and each historical moment as features, and use the spectral efficiency of each candidate cell at the The sample service performance parameters corresponding to each historical moment are used as labels, and the preset second neural network is trained to obtain the second prediction model. 20. A base station device, wherein the base station device is a serving base station of a target terminal, and the base station device includes an acquisition unit and a processing unit; The acquiring unit is configured to acquire an identity of at least one candidate cell; each candidate cell covers the target terminal at a preset time, and the service performance parameter of each candidate cell meets the target at the preset time Terminal performance requirements; The processing unit is configured to instruct the target terminal to switch to a target cell at the preset time according to the identifier of the at least one candidate cell, and the target cell is one of the at least one candidate cell that satisfies the target terminal The cell of the handover condition; The acquiring unit is specifically configured to receive a target sequence; the target sequence sorts the at least one candidate cell according to the service performance characteristic value of each candidate cell, and the target sequence includes the at least one candidate cell The identity of the cell, the characteristic value of the service performance Among them, the value of Z is the characteristic value of the service performance of the candidate cell; zi is the service performance parameter value corresponding to the i-th historical moment of the candidate cell, k is a preset coefficient, k≠0; C is the preset service performance parameter The value is a preset fixed value; u is the average value of multiple service performance parameters of the candidate cell obtained by the network equipment, The target cell is the first cell that satisfies the handover condition of the target terminal based on the order in the target sequence. 21. A base station device, characterized in that the base station device is the target base station to which the target cell belongs; the target cell is a cell that satisfies the switching conditions of the target terminal among at least one candidate cell, and each candidate cell covers The target terminal, and the service performance parameters of each candidate cell meet the performance requirements of the target terminal at the preset time; the target cell is included in the target sequence, and the target sequence is based on each of the candidate The service performance characteristic value of the cell is sorted by size, and the service performance characteristic value of the candidate cell Among them, the value of Z is the characteristic value of the service performance of the candidate cell; zi is the service performance parameter value corresponding to the i-th historical moment of the candidate cell, k is a preset coefficient, k≠0; C is the preset service performance parameter The value is a preset fixed value; u is the average value of multiple service performance parameters of the candidate cell obtained by the network equipment, The base station equipment includes a determining unit and a processing unit; The determining unit is configured to determine a target transmission resource for the target cell to serve the target terminal before the preset time; The processing unit is configured to provide a service for the target terminal based on the target transmission resource after the target terminal is handed over to the target cell. 22. The base station device according to claim 21, wherein the target transmission resource comprises a target transmission power, and/or, a target physical resource block PRB resource; the target transmission power is positively correlated with a target transmission distance, so The target transmission distance is the distance between the target terminal and the target base station; the target PRB resources are positively correlated with the maximum bandwidth supported by the target terminal. 23. A network device, characterized in that the network device includes a memory and a processor; the memory is coupled to the processor; said memory is for storing computer program code, said computer program code comprising computer instructions; When the processor executes the computer instructions, the network device executes the terminal switching method according to any one of claims 1-8. 24. A base station device, characterized in that the base station device includes a memory and a processor; the memory is coupled to the processor; said memory is for storing computer program code, said computer program code comprising computer instructions; When the processor executes the computer instructions, the base station device executes the terminal handover method according to any one of claims 9 or 10-11. 25. A computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, wherein when the instructions are run on a network device, the network device is made to execute the The terminal switching method described in any one. 26. A computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, wherein when the instructions are run on the base station equipment, the base station equipment is made to execute the method according to claim 9 or 10- The terminal switching method described in any one of 11.