CN111884848A - Network slice selection method and device - Google Patents

Abstract

The present application provides a method and device for selecting a network slice, which relate to the field of communication technologies and are used to solve the problem that the access network equipment cannot select the correct network slice when the core network equipment and the access network equipment belong to different operators. The method includes: the selection device receives the information of the first network slice sent by the first core network device; the selection device determines the second network slice according to the information of the first network slice and the information of all network slices in the access network device. This application applies to the process of selecting network slices.

Description

Method and device for selecting network slice

technical field

The present application relates to the field of communications, and in particular, to a method and apparatus for selecting a network slice.

Background technique

There is at least one network slice in the access network equipment, and each network slice can provide services for a specific type of communication service. In a scenario where the core network device and the access network device belong to the same operator, the access network device can select a network slice corresponding to the network slice identifier to provide services according to the network slice identifier sent by the core network device of the same operator.

However, in a shared network, different operators can use the same access network device (which may be called a shared device). Since different operators have their own core network equipment, it may happen that the core network equipment and the shared equipment belong to different operators. In this way, when a core network device (which may be referred to as a first core network device) that is different from the operator to which the shared device belongs, sends the network slice identifier to the shared device, because the network slice identifier does not exist in the shared device, or the shared device does not have the network slice identifier. The network slice corresponding to the network slice identifier is different from the network slice requested by the first core network device, so that the sharing device cannot select the correct network slice.

SUMMARY OF THE INVENTION

The present application provides a method and apparatus for selecting a network slice, which are used to solve the problem that the access network equipment cannot select the correct network slice when the core network equipment and the access network equipment belong to different operators.

To achieve the above object, the application adopts the following technical solutions:

In a first aspect, the present application provides a method for selecting a network slice.

The network slice selection device (hereinafter referred to as "selection device") receives the information of the first network slice sent by the first core network device; the selection device is based on the information of the first network slice and the access network device (the first core network device belongs to information about all network slices in the operator and the operator to which the access network device belongs), and determine the second network slice (the second network slice is the network whose correlation with the first network slice satisfies the preset condition among all network slices) slice).

Based on the above technical solutions, when the operator to which the first core network device belongs is different from the operator to which the access network device belongs, even if the first network slice identifier does not exist in the access network device, or the access network device cannot identify the first network slice identifier An identifier of a network slice, the selection device can still select the correlation between all network slices of the access network device and the first network slice according to the information of the first network slice and the information of all network slices in the access network device The second network slice that satisfies the preset condition. In this way, the correct network slicing service can be provided and the user experience can be improved.

Optionally, the selection apparatus in this embodiment of the present application may be an access network device. In this way, the access network device can select a correct network slice from the existing network slices, and provide the corresponding network slice service to improve user experience.

In a possible design, the preset condition is that the correlation coefficient is the largest, the access network equipment includes N network slices, and N is a positive integer. The above method of "determining the second network slice according to the information of the first network slice and the information of all network slices in the access network device" includes: determining the identifier of the target network slice, and the target network slice is the largest correlation coefficient among N correlation coefficients. The network slice corresponding to the coefficient; it is determined that the network slice indicated by the identifier of the target network slice is the second network slice.

In a possible design, the network slice information further includes M groups of QoS parameters, where M is a positive integer. The correlation coefficient between the QoS parameter of each network slice in the N network slices and the QoS parameter of the first network slice is determined according to the following formula:

where sliceT _q is the correlation coefficient between the qth network slice in the access network device and the first network slice, X _i is the QoS parameter of the qth network slice in the access network device, and Y _i is the QoS of the first network slice parameter, _Xi and _Yi are the same QoS parameters in the same group of QoS parameters, and q is a positive integer less than or equal to N.

In a possible design, the first network slice and the second network slice are the same; or, the first network slice and the second network slice are different.

In a second aspect, the present application provides an apparatus for selecting a network slice, where the apparatus for selecting a network slice includes a receiving unit and a determining unit.

a receiving unit, configured to receive the information of the first network slice sent by the first core network device;

A determining unit, configured to determine a second network slice according to the information of the first network slice and the information of all network slices in the access network device, where the second network slice is a correlation between all network slices and the first network slice satisfying For network slices with preset conditions, the operator to which the first core network device belongs is different from the operator to which the access network device belongs.

In a possible design, the preset condition is that the correlation coefficient is the largest, the access network equipment includes N network slices, and N is a positive integer. The above determination unit is specifically used to calculate the correlation between the information of each network slice in the N network slices and the information of the first network slice, and obtain N correlation coefficients; determine the identifier of the target network slice, and the target network slice is N The network slice corresponding to the largest correlation coefficient among the correlation coefficients; determining the network slice indicated by the identifier of the target network slice as the second network slice.

In a possible design, the network slice information further includes M groups of QoS parameters, where M is a positive integer. The correlation coefficient between the QoS parameter of each network slice in the N network slices and the QoS parameter of the first network slice is determined according to the following formula:

where sliceT _q is the correlation coefficient between the qth network slice in the access network device and the first network slice, X _i is the QoS parameter of the qth network slice in the access network device, and Y _i is the QoS of the first network slice parameter, _Xi and _Yi are the same QoS parameters in the same group of QoS parameters, and q is a positive integer less than or equal to N.

In a possible design, the first network slice and the second network slice are the same; or, the first network slice and the second network slice are different.

In a third aspect, the present application provides a network slicing selection device, the device includes: a processor and a communication interface; the communication interface is coupled to the processor, and the processor is configured to run a computer program or instructions to implement the first aspect and the first The method for selecting network slices described in any possible implementation manner of an aspect.

In a fourth aspect, the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed on a computer, the computer is made to execute any one of the first aspect and the first aspect. The method for selecting network slices described in the implementation manner of .

In a fifth aspect, the present application provides a computer program product comprising instructions, which, when the computer program product is run on a computer, enables the computer to execute the network described in the first aspect and any possible implementation manner of the first aspect. Slice selection method.

In a sixth aspect, the present application provides a chip, the chip includes a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run a computer program or instruction to realize any possibility as the first aspect and the first aspect The method for selecting network slices described in the implementation manner of .

In the above solution, the technical problems and technical effects that can be solved by the selection device, computer equipment, computer storage medium, computer program product or chip for network slicing can refer to the technical problems and technical effects solved in the first aspect above. Here No longer.

Description of drawings

FIG. 1 is a system architecture diagram of a communication system provided by an embodiment of the present application;

2 is a schematic flowchart of a method for selecting a network slice provided by an embodiment of the present application;

3 is a schematic flowchart of another method for selecting a network slice provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of an apparatus for selecting a network slice provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of another apparatus for selecting a network slice provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The character "/" in this text generally indicates that the related objects are an "or" relationship. For example, A/B can be understood as A or B.

The terms "first" and "second" in the description and claims of the present application are used to distinguish different objects, rather than to describe a specific order of the objects.

Furthermore, references to the terms "comprising" and "having" in the description of this application, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or modules is not limited to the listed steps or modules, but may optionally also include other unlisted steps or modules, or optionally also Other steps or modules inherent to these processes, methods, products or devices are included.

In addition, in the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or illustrations. Any embodiment or design described in this application as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, use of words such as "exemplary" or "such as" is intended to present concepts in a specific manner.

In order to facilitate the understanding of the technical solutions of the present application, before the detailed introduction of the code package quoting method in the embodiments of the present application, the implementation environment and application scenarios of the embodiments of the present application are first introduced.

Referring to FIG. 1 , the method for selecting a network slice provided in this embodiment of the present application may be applied to an implementation environment composed of core network equipment, bearer network equipment, shared equipment, and terminals. As shown in FIG. 1 , the implementation environment may include core network device A, bearer network device A, core network device B, bearer network device B, shared device, terminal A, and terminal B. Among them, core network equipment A, bearer network equipment A, and shared equipment belong to operator A, and core network equipment B and bearer network equipment B belong to operator B; both operator A and operator B can use shared equipment; terminal A is A user of operator A, and terminal B is a user of operator B.

The functions of core network equipment are mainly to establish connections for users (such as mobility management, call management, etc.), manage user data (such as user communication records, user descriptions, security management of mobile services, etc.) and complete services. Bearer connections (such as connections to external circuit data networks and packet data networks, etc.) are used as interfaces provided by the bearer network to external networks.

The bearer network equipment is located between the access network equipment and the switch, and is used to transmit various voice and data services. Usually, optical fiber is used as the transmission medium.

The terminal may be: user equipment (UE), access terminal, terminal unit, terminal station, mobile station, mobile station, remote station, remote terminal, mobile device, wireless communication device, vehicle user equipment, terminal agent or terminal device etc. Optionally, the terminal may be various handheld devices, vehicle-mounted devices, wearable devices, and computers with communication functions, which are not limited in this embodiment of the present application. For example, the handheld device may be a smartphone. The in-vehicle device may be an in-vehicle navigation system. The wearable device can be a smart bracelet. The computer may be a personal digital assistant (PDA) computer, a tablet computer, and a laptop computer.

In this embodiment of the present application, when terminal A sends a service data request to core network device A, core network device A sends a network slice identifier to the sharing device through bearer network device A according to the service data request, and the sharing device selects the corresponding network slice identifier according to the network slice identifier. The network slice provides services; when terminal B sends a service data request to core network device B, core network device B sends network slice information to bearer network device A through bearer network device B according to the service data request, and bearer network device A sends the shared The device sends network slice information, and the sharing device selects the corresponding network slice to provide services according to the network slice identifier.

The technical solutions provided by the embodiments of the present application can be applied to the above communication system. The network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. The evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

As shown in FIG. 2 , the method for selecting a network slice provided by this embodiment of the present application includes the following steps:

S101. The selecting apparatus receives the information of the first network slice sent by the first core network device.

The information of the network slice is the template configuration information of the network slice.

In a possible implementation manner, the terminal sends a service request to the first core network device; the first core network device matches network slices that meet the service characteristics in a preset network slice database according to the service characteristics of the service requested by the terminal. The first core network sends the network slice to the selection device, and the selection device receives the network slice.

It should be noted that the network slice database is pre-configured by the operator. Therefore, when a user terminal of the same operator sends a service request to the first core network device, the core network device must be able to find out a network slice that satisfies the service characteristics.

Exemplarily, Table 1 shows the correspondence between services and network slices in the network slice database. Among them, service A corresponds to network slice A, service B corresponds to network slice B, and service C corresponds to network slice C. When the terminal requests the service A from the first core network device, the first core network device sends the network slice template A to the selection device.

Table I

business network slice Business A network slice A business B network slice B business C network slice C

S102. The selecting device determines the second network slice according to the information of the first network slice and the information of all network slices in the access network device.

The second network slice is a network slice whose correlation with the first network slice satisfies a preset condition among all network slices.

In a possible implementation manner, the selection device inputs the information of each network slice in the access network device and the information of the first network slice into a preset formula to obtain a plurality of correlation coefficients. The selection device determines the second network slice according to a plurality of correlation coefficients and preset conditions. For the specific process of determining the second network slice, reference may be made to S201-S203, which will not be repeated here.

In this embodiment of the present application, the preset condition may be that the correlation coefficient is the largest, or the correlation coefficient may be greater than a threshold. This embodiment of the present application does not limit this.

It can be understood that, if the correlation between the second network slice and the first network slice satisfies the preset condition, it means that the correlation between the second network slice and the first network slice is strong. Therefore, when the first network slice cannot be correctly selected, the selecting device may determine the second network slice, replace the first network slice with the second network slice, and provide the second network slice service.

In this embodiment of the present application, the operator to which the first core network device belongs may be different from the operator to which the access network device belongs, and the operator to which the first core network device belongs may also be the same as the operator to which the access network device belongs. This is not limited.

It can be understood that, when the operator to which the first core network device belongs is different from the operator to which the access network device belongs, it can only be retrieved from the access network device according to the information of the network slice and the information of all network slices in the access network device. The network slice identifies a network slice. When the operator to which the first core network device belongs is the same as the operator to which the access network device belongs, if the access network device does not recognize the identifier of the network slice, the network information to determine a network slice from the network slices in the access network equipment.

Based on the above technical solutions, when the operator to which the first core network device belongs is different from the operator to which the access network device belongs, even if the first network slice identifier does not exist in the access network device, or the access network device cannot identify the first network slice identifier An identifier of a network slice, the selection device can still select the correlation between all network slices of the access network device and the first network slice according to the information of the first network slice and the information of all network slices in the access network device The second network slice that satisfies the preset condition. In this way, the access network device can select the correct network slice and provide the corresponding network slice service, which improves the user experience.

The process of determining the second network slice by the selecting apparatus according to the information of the first network slice and the information of all network slices in the access network device will be described in detail below. As shown in FIG. 3 , a method for selecting a network slice provided by an embodiment of the present application includes the following steps:

S201. The selection device calculates the correlation between the information of each network slice in the N network slices and the information of the first network slice, and obtains N correlation coefficients.

The information of the network slice includes M groups of quality of service (Quality of Service, QoS) parameters.

It should be noted that the QoS parameters include: 5G Quality of Service Identifier (5G QoS Identifier, 5QI), Allocation and Retention Priority (ARP), Guaranteed Flow Bit Rate (GFBR), Maximum Traffic Bit Maximum Flow Bit Rate (MFBR), Aggregate Maximum Bit Rate (AMBR), Session-Aggregate Maximum Bit Rate (Session-AMBR), The Maximum Packet Loss Rate ), Resource Type, Priority level, Packet Delay Budget, Packet Error Rate, Average Window, Maximum Data Burst Volume).

Exemplarily, Table 2 shows the information of network slice A. The information of network slice A includes two sets of QoS parameters, which are a set of QoS parameters corresponding to 5QI of 1 and a set of QoS parameters corresponding to 5QI of 2, respectively.

Table II

It should be noted that 5QI is a service quality indicator. Each network slice includes at least one 5QI, and each 5QI corresponds to a service type. Exemplarily, a 5QI of 1 corresponds to a video service type, and a 5QI of 2 corresponds to a game service type.

In a possible implementation manner, the selection device randomly orders the N network slices. The selection device sequentially calculates the correlation coefficient between the information of each network slice and the information of the first network slice according to the order of the N network slices.

In a possible design, the correlation coefficient between the QOS parameter of each network slice in the N network slices and the QOS parameter of the first network slice is determined according to the following formula:

where sliceT _q is the correlation coefficient between the qth network slice in the access network device and the first network slice, X _i is the QOS parameter of the qth network slice in the access network device, and Yi is the QOS parameter of the first network slice , _Xi and Yi are the same _QOS parameters in the same group of QOS parameters, and q is a positive integer less than or equal to N.

Exemplarily, Table 3 is the QoS parameters of the first network slice in the access network device, and Table 4 is the QoS parameters of the first network slice. Then the correlation coefficient between the first network slice and the first network slice in the access network device is:

Table 3

Table 4

It should be noted that if the 5QIs in the two network slices are different, that is, one network slice has a certain 5QI, and the other network slice does not have the 5QI. Then, the values of a group of QoS parameters corresponding to the 5QI in the network slice without the 5QI are all 0. For example, if there is a set of QoS parameters corresponding to 5QI of 1 in the second network slice, and there is no set of QoS parameters corresponding to 5QI of 1 in the first network slice, then a set of QoS parameters corresponding to 5QI of 1 in the first network slice The value of is 0.

S202. The selection device determines the identifier of the target network slice, where the target network slice is the network slice corresponding to the largest correlation coefficient among the N correlation coefficients.

In a possible implementation manner, the selection device sorts the obtained N correlation coefficients according to a preset order, obtains the largest correlation coefficient, and determines the identifier of the network slice corresponding to the largest correlation coefficient.

The preset order may be sorted from small to large, or may be sorted from large to small. This embodiment of the present application does not limit this.

S203. The selection device determines that the network slice indicated by the identifier of the target network slice is the second network slice.

Based on the above technical solution, the selecting device may select the network slice with the greatest correlation with the first network slice among all the network slices in the access network device according to the information of the first network slice and the information of all network slices in the access network device. Second network slice. In this way, the access network device can select the correct network slice and provide the corresponding network slice service, which improves the user experience.

The solutions provided by the embodiments of the present application have been introduced above mainly from the perspective of computer equipment. It can be understood that, in order to realize the above-mentioned functions, the computer device includes corresponding hardware structures and/or software modules for executing each function. Those skilled in the art should easily realize that the method steps for selecting network slices in each example described in conjunction with the embodiments disclosed in this application can be implemented in hardware or in a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

The embodiment of the present application further provides an apparatus for selecting a network slice. The device for selecting a network slice may be a computer device, a CPU in the above-mentioned computer device, a processing module in the above-mentioned computer device for selecting a network slice, or a device in the above-mentioned computer device for selecting a network slice client.

In this embodiment of the present application, the device for selecting network slices may be divided into functional modules or functional units according to the foregoing method examples. For example, each functional module or functional unit may be divided corresponding to each function, or two or more functions may be integrated. in a processing module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules or functional units. Wherein, the division of modules or units in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.

As shown in FIG. 4 , it is a schematic structural diagram of an apparatus for selecting a network slice provided by an embodiment of the present application. The apparatus for selecting a network slice is used to perform the method for selecting a network slice shown in FIG. 2 or FIG. 3 . The apparatus for selecting a network slice may include a receiving unit 101 and a determining unit 102 .

The receiving unit 101 is configured to receive the information of the first network slice sent by the first core network device. For example, in conjunction with FIG. 2, the receiving unit 101 may be configured to perform S101. Determining unit 102, configured to determine a second network slice according to information of the first network slice and information of all network slices in the access network device, where the second network slice is the correlation between all network slices and the first network slice For network slices that meet the preset conditions, the operator to which the first core network device belongs is different from the operator to which the access network device belongs. For example, in conjunction with FIG. 2, the determination unit 102 may be configured to perform S102.

Optionally, the preset condition is that the correlation coefficient is the largest, the access network device includes N network slices, and N is a positive integer. The determining unit 102 is specifically configured to calculate the correlation between the information of each network slice in the N network slices and the information of the first network slice, and obtain N correlation coefficients; determine the identifier of the target network slice, and the target network slice is N The network slice corresponding to the largest correlation coefficient among the correlation coefficients; determining the network slice indicated by the identifier of the target network slice as the second network slice. For example, in conjunction with FIG. 3 , the determining unit 102 may be configured to perform S201.

Optionally, the network slice information further includes M groups of QoS parameters, where M is a positive integer. The correlation coefficient between the QoS parameter of each network slice in the N network slices and the QoS parameter of the first network slice is determined according to the following formula:

where sliceT _q is the correlation coefficient between the qth network slice in the access network device and the first network slice, X _i is the QoS parameter of the qth network slice in the access network device, and Y _i is the QoS of the first network slice parameter, _Xi and _Yi are the same QoS parameters in the same group of QoS parameters, and q is a positive integer less than or equal to N.

Optionally, the first network slice and the second network slice are the same; or, the first network slice and the second network slice are different.

FIG. 5 shows yet another possible structure of the apparatus for selecting network slices involved in the foregoing embodiment. The apparatus for selecting a network slice includes: a processor 201 and a communication interface 202 . The processor 201 is used to control and manage the actions of the apparatus, for example, to perform each step in the method flow shown in the above method embodiments, and/or to perform other processes of the technology described herein. The communication interface 202 is used to support communication between the selection device of the network slice and other network entities. The device for selecting a network slice may further include a memory 203 and a bus 204, where the memory 203 is used to store program codes and data of the device.

The above-mentioned processor 201 may implement or execute various exemplary logical blocks, units and circuits described in conjunction with the present disclosure. The processor may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It may implement or execute the various exemplary logical blocks, units and circuits described in connection with this disclosure. A processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

The memory 203 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, hard disk or solid-state disk; the memory may also include the above-mentioned types of memory. combination.

The bus 204 may be an Extended Industry Standard Architecture (EISA) bus or the like. The bus 204 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 5, but it does not mean that there is only one bus or one type of bus.

In actual implementation, the receiving unit 101 may be implemented by the communication interface 202 shown in FIG. 5 , and the determining unit 102 may be implemented by calling the program code in the memory 203 by the processor 201 shown in FIG. 5 . For the specific execution process, reference may be made to the description of the method for selecting network slices shown in FIG. 2 or FIG. 3 , which will not be repeated here.

From the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of the above functional modules is used as an example for illustration. In practical applications, the above functions can be allocated as required. It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the functions described above. For the specific working process of the system, apparatus and unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

The embodiments of the present application provide a computer program product containing instructions, when the computer program product runs on a computer, the computer is made to execute the method for selecting a network slice in the above method embodiments.

Embodiments of the present application further provide a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed on a computer, the computer is made to execute the network slice in the method process shown in the above method embodiments selection method.

The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or any combination of the above. More specific examples (non-exhaustive list) of computer readable storage media include: electrical connections with one or more wires, portable computer disks, hard disks, 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 suitable combination of the foregoing, or any other form of computer-readable storage medium known in the art. An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium may be located in an Application Specific Integrated Circuit (ASIC). In the embodiments of the present application, the 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 for selecting network slice, the computer-readable storage medium, and the computer program product in the embodiments of the present invention can be applied to the above method, the technical effects that can be obtained may also refer to the above method embodiments, the embodiments of the present invention. It is not repeated here.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (10)

1. A method for selecting a network slice, wherein the method comprises: receiving information about the first network slice sent by the first core network device; According to the information of the first network slice and the information of all network slices in the access network device, a second network slice is determined, and the second network slice is the connection between the all network slices and the first network slice For network slices whose correlation satisfies a preset condition, the operator to which the first core network device belongs is different from the operator to which the access network device belongs. 2. The selection method according to claim 1, wherein the preset condition is that the correlation coefficient is the largest, the access network device comprises N network slices, and N is a positive integer; The determining of the second network slice according to the information of the first network slice and the information of all network slices in the access network device includes: Calculate the correlation between the information of each network slice in the N network slices and the information of the first network slice to obtain N correlation coefficients; Determine the identifier of the target network slice, and the target network slice is the network slice corresponding to the largest correlation coefficient among the N correlation coefficients; It is determined that the network slice indicated by the identifier of the target network slice is the second network slice. 3. The selection method according to claim 2, wherein the information of the network slice further comprises M groups of QoS parameters, where M is a positive integer; The correlation coefficient between the QoS parameter of each network slice in the N network slices and the QoS parameter of the first network slice is determined according to the following formula:

where sliceT _q is the correlation coefficient between the qth network slice in the access network device and the first network slice, X _i is the QoS parameter of the qth network slice in the access network device, and Y _i is the QoS of the first network slice parameter, _Xi and _Yi are the same QoS parameters in the same group of QoS parameters, and q is a positive integer less than or equal to N. 4 . The selection method according to claim 1 , wherein the first network slice is the same as the second network slice; or the first network slice is the same as the second network slice. 5 . Two network slices are different. 5. An apparatus for selecting network slices, wherein the apparatus comprises: a receiving unit, configured to receive the information of the first network slice sent by the first core network device; a determining unit, configured to determine a second network slice according to the information of the first network slice and the information of all network slices in the access network device, where the second network slice is the same as the first network slice among all the network slices For a network slice whose correlation between network slices satisfies a preset condition, the operator to which the first core network device belongs is different from the operator to which the access network device belongs. 6 . The selection device according to claim 5 , wherein the preset condition is that the correlation coefficient is the largest, the access network device includes N network slices, and N is a positive integer; the determining unit is specifically configured by the following 6 . At Calculate the correlation between the information of each network slice in the N network slices and the information of the first network slice to obtain N correlation coefficients; Determine the identifier of the target network slice, and the target network slice is the network slice corresponding to the largest correlation coefficient among the N correlation coefficients; It is determined that the network slice indicated by the identifier of the target network slice is the second network slice. 7. The selection device according to claim 6, wherein the information of the network slice further comprises M groups of QoS parameters, where M is a positive integer; The correlation coefficient between the QoS parameter of each network slice in the N network slices and the QoS parameter of the first network slice is determined according to the following formula:

where sliceT _q is the correlation coefficient between the qth network slice in the access network device and the first network slice, X _i is the QoS parameter of the qth network slice in the access network device, and Y _i is the QoS of the first network slice parameter, _Xi and _Yi are the same QoS parameters in the same group of QoS parameters, and q is a positive integer less than or equal to N. 8 . The selection device according to claim 5 , wherein the first network slice is the same as the second network slice; or the first network slice is the same as the second network slice. 9 . Two network slices are different. 9. An apparatus for selecting a network slice, comprising: a processor, a memory, and a communication interface; wherein, the communication interface is used for the selection apparatus of the network slice to communicate with other devices or networks; the memory is used for storing One or more programs comprising computer-executable instructions, when the selection means of the network slice is run, the processor executes the computer-executable instructions stored in the memory to cause the selection means of the network slice to execute the claims The method for selecting a network slice described in any one of 1-4. 10. A computer-readable storage medium having instructions stored in the computer-readable storage medium, wherein when a computer executes the instruction, the computer executes the network described in any one of the preceding claims 1-4. Slice selection method.

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