CN110461027A

CN110461027A - A kind of network slice selection method and device

Info

Publication number: CN110461027A
Application number: CN201810427973.1A
Authority: CN
Inventors: 苏偌宇; 武绍芸
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-05-07
Filing date: 2018-05-07
Publication date: 2019-11-15
Anticipated expiration: 2038-05-07
Also published as: CN110461027B

Abstract

A kind of network slice selection method and device, to report the selecting network of NSSAI ability to be sliced not have.This method are as follows: access and mobile management function to ps domain AMF send to network slice selection function NSSF and be sliced selection request, the slice selects request for requesting the service selection network for terminal to be sliced, the dynamic feature information of the terminal is carried in the slice selection request, the dynamic feature information is for selecting the network to be sliced；The AMF receives the identification information that the network is sliced from the NSSF.

Description

A kind of network slice selection method and device

Technical field

The invention relates to field of communication technology more particularly to a kind of network slice selection method and devices.

Background technique

5th third-generation mobile communication (the 5th-generation, 5G) system uses network microtomy, and network slice is Network operator meets hardware, software, the strategy of the service quality of specific user's collection and Dynamical Deployment from business visual angle With a kind of combination of frequency spectrum.Network slice provides the network service end to end from wireless access network to core net for terminal.Tool Body, in the network for supporting microtomy, network function is divided into multiple virtual network functions (virtual network Function, VNF) module, each VNF module can be used to execute different network functions, such as sort, segmentation, encryption and decryption Etc. functions can form network slice one by one by the way that VNF module to be dynamically deployed in network.Each network slice packet Containing one group of function example.Network slice can provide service for various types business, for network security angle, different business Or different tenants have different needs safety.The application of network slice allows operator or user for different application field Scape, neatly on-premise network service improve the utilization efficiency of physical network resource.Simultaneously in separate configurations and management network slice On the basis of, guarantee the safety of network slice.

In the prior art, after terminal is attached to network, network is the network slice of terminal selection service.Specifically, eventually End can send network to core net and be sliced auxiliary information (Network Slice Selection Assistance Information, NSSAI), which includes the type of service and other information for selecting network to be sliced of terminal, can also To be the mark of network slice, core net is that the network that terminal selection services is sliced according to the NSSAI.But for some Do not have the terminal for reporting NSSAI ability, core net can not be that the Terminal Type selects suitable network to be sliced by NSSAI.

Summary of the invention

The embodiment of the present application provides a kind of network slice selection method and device, how to report to solve not have The problem of selecting network slice of NSSAI ability.

Specific technical solution provided by the embodiments of the present application is as follows:

In a first aspect, providing a kind of network slice selection method, the executing subject of this method can be access and mobility The step of management function AMF, specific method, can be as described below: sending slice selection to network slice selection function NSSF and asks It asks, receives the identification information that the network is sliced from the NSSF, wherein the slice selects request for requesting as terminal Service selection network slice, the slice select the dynamic feature information that the terminal is carried in request, the behavioral characteristics letter Breath is for selecting the network to be sliced.It, can be according to the behavioral characteristics of terminal in the case where terminal has and reports NSSAI message Information is service selection one suitable network slice of terminal, and the program does not depend on some static state of network side acquisition Information selects network to be sliced, but selects network slice according to dynamic feature information, can change with the business of terminal and suitable The change of answering property has flexibility.In addition, selection method is sliced by above-mentioned network, it can be different for different service selections Network slice suitable network can be selected to be sliced for multiple business respectively, in short, energy when terminal accesses multiple business Enough network performances required for guarantee business improve network resource utilization, improve user to the experience sense of business, enhance user Commercial value.

In a possible design, before Xiang Suoshu NSSF sends slice selection request, the behavioral characteristics are also obtained Information.

In a possible design, before Xiang Suoshu NSSF sends slice selection request, also to network data analysis function Energy NWDAF sends inquiry request message, and the inquiry request message includes the identification information of the terminal, and the inquiry request disappears Breath is for requesting the information of inquiry network slice corresponding with the terminal identification information；The inquiry is received from the NWDAF The response message of request message, the response message are used to indicate the result of the inquiry as failure；It, can be under this scene According to the response message, the dynamic feature information is obtained.The collection Macro or mass analysis of data is realized by introducing NWDAF, It is easier to the decoupling of software architecture.

In a possible design, the dynamic feature information is comprised at least one of the following: signaling plane characteristic information, number According to region feature information and charging event.

In a possible design, the dynamic feature information is comprised at least one of the following: handoff features, position feature And business information.

In a possible design, the dynamic feature information is comprised at least one of the following: the movement speed of the terminal Degree, the switching historical information of the terminal, the change in location frequency of the terminal, the terminal initiate the session of the business Frequency, the AMF initiate the frequency of paging request, the service quality QoS of the business negotiates frequency, the QoS association of the business Quotient's result, the average data packet length of the business, the data packet interarrival times of the business, the business charging plan Slightly；Wherein, the paging request is for paging the terminal.Network is selected to be sliced according to dynamic feature information, it can be with end The business at end changes and the change of adaptability, has flexibility, so that the network slice of selection can more adapt to the business of terminal Feature.

In a possible design, the dynamic feature information is obtained by any one or more following method: logical It crosses the change in location frequency for itself obtaining the terminal and/or the AMF initiates the frequency of paging request；Alternatively, the AMF from Access network equipment obtains the movement velocity of the terminal and/or the switching historical information of the terminal；Alternatively, the AMF is from meeting Words management function SMF obtains the frequency of the session for initiating the business, the QoS of the business negotiates frequency and the business At least one of QoS negotiation result；Alternatively, the average data packet that the AMF obtains the business from user plane functions UPF is long The data packet interarrival times of degree and/or the business；Alternatively, the AMF obtains the business from policy control functions PCF Charging policy.Give the specific method for obtaining dynamic feature information.

In a possible design, the AMF notifies UPF to acquire spy relevant to the business of the terminal by SMF Reference breath, specifically, AMF sends a notification message to SMF, SMF sends a notification message to UPF, for notify UPF obtain with it is described Dynamic feature information.

In a possible design, the change in location frequency of terminal can be obtained by the following method: receiving the end The location information at end determines the change in location frequency of the terminal according to the location information of the terminal.It can use existing Process in 3GPP TS23.502 standard obtains the location information of terminal, further obtain terminal change in location frequency this Dynamic feature information, without introducing new signaling process.

In a possible design, the frequency that the AMF initiates paging request can be obtained by the following method: statistics The number for initiating paging request in setting time to the terminal is sought according in the setting time counted to terminal initiation The number asked is called for, determines that the AMF initiates the frequency of paging request.

In a possible design, the mode for receiving the location information of the terminal can have: in registration management process In from access network equipment receive the first N2 message, the location information of the terminal is carried in the first N2 message；And/or In The 2nd N2 message is received from access network equipment in se ce request procedure, the position letter of the terminal is carried in the 2nd N2 message Breath.The location information that terminal can be obtained using the process in existing 23.502 standard of 3GPP TS, further obtains terminal This dynamic feature information of change in location frequency, without introducing new signaling process.

In a possible design, it will be recorded in the business contexts of the terminal with the dynamic feature information.

Second aspect, provides a kind of network slice selection method, and the executing subject of this method can be network slice selection The step of function NSSF, specific method, can be as described below: receiving slice selection from access and mobile management function to ps domain AMF and asks It asks, Xiang Suoshu AMF sends the identification information of the network slice, and the slice selects request for requesting the business for terminal to be selected Network slice is selected, the dynamic feature information of the terminal is carried in the slice selection request, the dynamic feature information is used for The network is selected to be sliced.Terminal have report NSSAI message in the case where, can according to the dynamic feature information of terminal, It is sliced for service selection one suitable network of terminal, and the program does not depend on some static informations that network side obtains and comes Network slice is selected, but network slice is selected according to dynamic feature information, can be changed and adaptability with the business of terminal Change, there is flexibility.It can be the different network of different service selections in addition, being sliced selection method by above-mentioned network Slice can select respectively suitable network to be sliced, in short, can ensure when terminal accesses multiple business for multiple business Network performance required for business improves network resource utilization, improves user to the experience sense of business, enhances the business of user Value.

In a possible design, before Xiang Suoshu AMF sends the identification information of the network slice, also to third party Application server sends the dynamic feature information, and receives the mark that the network is sliced from the third-party application server Information；Alternatively, sending the dynamic feature information to network data analysis function NWDAF, and the net is received from the NWDAF The identification information of network slice.The collection Macro or mass analysis of data is realized by introducing NWDAF, it is easier to the decoupling of software architecture. It may be implemented to give network slice selection function opening to third-party application server.

In a possible design, before Xiang Suoshu AMF sends the identification information of the network slice, also according to described Slice selection request, selects the network to be sliced.

In a possible design, according to the dynamic feature information of the terminal and dynamic feature information and network The mapping relations of slice between the two, select the network to be sliced.

The mapping relations may in comprising multiple groups dynamic feature information and multiple networks slice between corresponding relationship, one group There is corresponding relationship between dynamic feature information and a network slice.

In a possible design, which is obtained according to following any mode: being cut according to the network The dynamic feature information of piece and the terminal of network slice service, generates the mapping relations；Alternatively, being sliced from sub-network Management function NSSMF receives the mapping relations；Alternatively, receiving the mapping relations from operation management face equipment.It provides more Kind obtains the mode of mapping relations.

The third aspect, provides a kind of network slice selection method, and the executing subject of this method can be network data analysis The step of function NWDAF, specific method, can be as described below: the dynamic feature information of terminal is received, according to the behavioral characteristics Information is that the service selection network of the terminal is sliced.It, can be according to end in the case where terminal has and reports NSSAI message The dynamic feature information at end is service selection one suitable network slice of terminal, and the program does not depend on network side and obtains Some static informations for taking select network to be sliced, but select network slice according to dynamic feature information, can be with terminal Business changes and the change of adaptability, has flexibility.It can be different in addition, being sliced selection method by above-mentioned network The different network slice of service selection can select respectively suitable network when terminal accesses multiple business for multiple business Slice improves network resource utilization in short, network performance required for business can be ensured, improves user to the body of business Sense is tested, the commercial value of user is enhanced.

In a possible design, according to the dynamic feature information and dynamic feature information and network slice two Mapping relations between person select the network to be sliced.

In a possible design, after the dynamic feature information for receiving terminal, also sent out to third-party application server The dynamic feature information for sending the terminal receives the mark letter for the network slice that the third-party application server returns Breath.Wherein, the dynamic feature information is according to the slice selection strategy being locally configured for the third-party application server The service selection network of the terminal is sliced, and may be implemented to give network slice selection function opening to third-party application server.

Fourth aspect, provides a kind of network slice selection method, and the executing subject of this method can be access network equipment, have The step of body method, can be as described below: receiving notification message from access and mobile management function to ps domain AMF；Disappeared according to the notice Breath, obtains the dynamic feature information of terminal, and the dynamic feature information is used to be sliced for the service selection network of the terminal.It is logical The dynamic feature information that access network device obtains terminal is crossed, the dynamic feature information of terminal AMF can be reported to, go forward side by side one Step is reported to NSSF or NWDAF by AMF, can be special according to the dynamic of terminal in the case where terminal has and reports NSSAI message Reference breath is service selection one suitable network slice of terminal, and the program does not depend on some quiet of network side acquisition State information selects network to be sliced, but selects network slice according to dynamic feature information, can change with the business of terminal and The change of adaptability has flexibility.In addition, selection method is sliced by above-mentioned network, it can be for different service selections not Same network slice can select respectively suitable network to be sliced when terminal accesses multiple business for multiple business, in short, It can ensure network performance required for business, improve network resource utilization, improve user to the experience sense of business, enhancing is used The commercial value at family.

In a possible design, the movement velocity of the terminal and/or the switching historical information of the terminal are obtained. It can be cut in this way according to the switching historical information of the movement velocity of terminal and/or the terminal for the service selection network of terminal Piece.

In a possible design, the movement velocity of the terminal is obtained according to following methods: being switched based on the received Request message counts the number that handover between cells occur within the set time for the terminal, according to the terminal in setting time The interior number that handover between cells occur, obtains the movement velocity of the terminal.

In a possible design, the switching historical information of the terminal is obtained according to following methods: based on the received Switching request message counts the terminal per the time interval that handover between cells occur twice, sends out twice according to the terminal is every The time interval of raw handover between cells, obtains the switching historical information of the terminal.

It should be pointed out that the terminal can be obtained using the process in existing 23.502 standard of 3GPP TS Movement velocity and/or the switching historical information of the terminal this dynamic feature information, without introducing new signaling process.

5th aspect, provides a kind of network slice selection method, and the executing subject of this method can be conversation management functional The step of SMF, specific method, can be as described below: notification message is received from access and mobile management function to ps domain AMF, according to described Notification message obtains the dynamic feature information of terminal, the service selection network that the dynamic feature information is used for as the terminal Slice.The dynamic feature information of terminal can be reported to AMF by the dynamic feature information that terminal is obtained by SMF, and further NSSF or NWDAF are reported to by AMF, it, can be according to the behavioral characteristics of terminal in the case where terminal has and reports NSSAI message Information is service selection one suitable network slice of terminal, and the program does not depend on some static state of network side acquisition Information selects network to be sliced, but selects network slice according to dynamic feature information, can change with the business of terminal and suitable The change of answering property has flexibility.In addition, selection method is sliced by above-mentioned network, it can be different for different service selections Network slice suitable network can be selected to be sliced for multiple business respectively, in short, energy when terminal accesses multiple business Enough network performances required for guarantee business improve network resource utilization, improve user to the experience sense of business, enhance user Commercial value.

In a possible design, according to the notification message, the session that the terminal initiates the business is obtained At least one of frequency, the service quality QoS negotiation frequency of the business, QoS negotiation result of the business.

In a possible design, the frequency that the terminal initiates the session of the business is obtained by the following method: Statistics receives protocol Data Unit session from access and mobile management function to ps domain AMF in se ce request procedure within the set time The number of context request is updated, and determines that the terminal initiates the frequency of the session of the business according to the number；Alternatively, The SMF statistics is built in session management process from the AMF receiving packet data unit PDU session in the setting time The number of vertical context request, and according to the number, determine that the terminal initiates the frequency of the session of the business.

In a possible design, the service quality QoS for obtaining the business by the following method negotiates frequency: described SMF receives subscription data from uniform data management UDM in PDU session establishment process, carries QoS mass in the subscription data Description, the SMF negotiate frequency according to the service quality QoS that QoS mass description obtains the business；Alternatively, the SMF The QoS information of the terminal is received from the AMF, and is negotiated according to the service quality QoS that the QoS information obtains the business Frequency.

In a possible design, obtain the QoS negotiation result of the business by the following method: the SMF is in PDU Subscription data is received from UDM in session establishment process, the description of QoS mass is carried in the subscription data, the SMF is according to The description of QoS mass obtains the QoS negotiation result of the business；Alternatively, the SMF receives the QoS letter of the terminal from the AMF It ceases, and obtains the QoS negotiation result of the business according to the QoS information.

It should be pointed out that the service of the business can be obtained using the process in existing 23.502 standard of 3GPP TS Quality Q oS negotiates frequency and the QoS negotiation result of the business this dynamic feature information, without introducing new signaling process.

6th aspect, provides a kind of network slice selection method, and the executing subject of this method can be user's signing description The step of function UPF, specific method, can be as described below: receiving notification message, according to the notification message, obtains the dynamic of terminal State characteristic information, the dynamic feature information are used to be sliced for the service selection network of the terminal.Terminal is obtained by UPF The dynamic feature information of terminal can be reported to AMF by dynamic feature information, and further by AMF be reported to NSSF or NWDAF can be the business of terminal according to the dynamic feature information of terminal in the case where terminal has and reports NSSAI message The suitable network slice of selection one, and the program does not depend on some static informations of network side acquisition to select network to cut Piece, but network slice is selected according to dynamic feature information, it can change and the change of adaptability with the business of terminal, there is spirit Activity.In addition, being sliced selection method by above-mentioned network, it can be sliced for the different network of different service selections, work as terminal When accessing multiple business, suitable network can be selected to be sliced for multiple business respectively, in short, can ensure required for business Network performance improves network resource utilization, improves user to the experience sense of business, enhances the commercial value of user.

In a possible design, according to the notification message, obtain the business average data packet length and/or The data packet interarrival times of the business.

In a possible design, the average data packet length of the business is obtained by the following method: from access net Equipment receives N3 message, and according to the data packet of the business in the N3 message, the average data packet for counting the business is long Degree.

In a possible design, the data packet interarrival times of the business are obtained by the following method: from connecing Log equipment receives N3 message, and according to the data packet of the business in the N3 message, counts the data packet of the business Arrival time interval.

In a possible design, notification message is received from conversation management functional SMF, the notification message is from connecing Enter and mobile management function to ps domain AMF.

7th aspect, provides a kind of network slice selection method, and the executing subject of this method can be policy control functions The step of PCF, specific method, can be as described below: notification message is received from access and mobile management function to ps domain AMF, according to described Notification message obtains the dynamic feature information of terminal, the service selection network that the dynamic feature information is used for as the terminal Slice.The dynamic feature information of terminal can be reported to AMF by the dynamic feature information that terminal is obtained by PCF, and further NSSF or NWDAF are reported to by AMF, it, can be according to the behavioral characteristics of terminal in the case where terminal has and reports NSSAI message Information is service selection one suitable network slice of terminal, and the program does not depend on some static state of network side acquisition Information selects network to be sliced, but selects network slice according to dynamic feature information, can change with the business of terminal and suitable The change of answering property has flexibility.In addition, selection method is sliced by above-mentioned network, it can be different for different service selections Network slice suitable network can be selected to be sliced for multiple business respectively, in short, energy when terminal accesses multiple business Enough network performances required for guarantee business improve network resource utilization, improve user to the experience sense of business, enhance user Commercial value.

In a possible design, according to the notification message, the charging policy of the business is obtained.

In a possible design, connect in Packet Data Unit PDU session establishment process from conversation management functional SMF It receives policy control and obtains operation information, the charging policy for obtaining the business in operation information is obtained from the policy control.It can To obtain this dynamic feature information of the charging policy of the business, nothing using the process in existing 23.502 standard of 3GPP TS New signaling process need to be introduced.

Eighth aspect provides a kind of network slice selection device, which, which has, realizes above-mentioned first aspect and first party The function with mobile management function to ps domain AMF behavior is accessed in any possible design in face.The function can pass through hardware It realizes, corresponding software realization can also be executed by hardware.The hardware or software include one or more and above-mentioned function Corresponding module.

In a possible design, which can be chip or integrated circuit.

In a possible design, which includes memory and processor, and memory is stored with batch processing, processing Device is used to execute the program of memory storage, and when program is performed, described device can execute above-mentioned first aspect and first Method described in any possible design of aspect.

In a possible design, which further includes transceiver, for being led between the device and other network elements Letter.

In a possible design, which is AMF.

9th aspect provides a kind of network slice selection device, which, which has, realizes above-mentioned second aspect and second party The function of network slice selection function NSSF behavior in any possible design in face.The function can pass through hardware reality It is existing, corresponding software realization can also be executed by hardware.The hardware or software include one or more and above-mentioned function phase Corresponding module.

In a possible design, which can be chip or integrated circuit.

In a possible design, which includes memory and processor, and memory is stored with batch processing, processing Device is used to execute the program of memory storage, and when program is performed, described device can execute above-mentioned second aspect and second Method described in any possible design of aspect.

In a possible design, which is NSSF.

Tenth aspect provides a kind of network slice selection device, which, which has, realizes the above-mentioned third aspect and third party The function of network data analysis function NWDAF behavior in any possible design in face.The function can pass through hardware reality It is existing, corresponding software realization can also be executed by hardware.The hardware or software include one or more and above-mentioned function phase Corresponding module.

In a possible design, which can be chip or integrated circuit.

In a possible design, which includes memory and processor, and memory is stored with batch processing, processing Device is used to execute the program of memory storage, and when program is performed, described device can execute the above-mentioned third aspect and third Method described in any possible design of aspect.

In a possible design, which is NWDAF.

Tenth on the one hand, provides a kind of network slice selection device, which, which has, realizes above-mentioned fourth aspect and the 4th The function of access network equipment behavior in any possible design of aspect.The function can be by hardware realization, can also be with Corresponding software realization is executed by hardware.The hardware or software include one or more moulds corresponding with above-mentioned function Block.

In a possible design, which can be chip or integrated circuit.

In a possible design, which includes memory and processor, and memory is stored with batch processing, processing Device is used to execute the program of memory storage, and when program is performed, described device can execute above-mentioned fourth aspect and the 4th Method described in any possible design of aspect.

In a possible design, which is access network equipment.

12nd aspect provides a kind of network slice selection device, which, which has, realizes above-mentioned 5th aspect and the 5th The function of conversation management functional SMF behavior in any possible design of aspect.The function can by hardware realization, Corresponding software realization can be executed by hardware.The hardware or software include one or more corresponding with above-mentioned function Module.

In a possible design, which can be chip or integrated circuit.

In a possible design, which includes memory and processor, and memory is stored with batch processing, processing Device is used to execute the program of memory storage, and when program is performed, described device can execute above-mentioned 5th aspect and the 5th Method described in any possible design of aspect.

In a possible design, which is SMF.

13rd aspect provides a kind of network slice selection device, which, which has, realizes above-mentioned 6th aspect and the 6th The function of user's signing representation function UPF behavior in any possible design of aspect.The function can pass through hardware reality It is existing, corresponding software realization can also be executed by hardware.The hardware or software include one or more and above-mentioned function phase Corresponding module.

In a possible design, which can be chip or integrated circuit.

In a possible design, which includes memory and processor, and memory is stored with batch processing, processing Device is used to execute the program of memory storage, and when program is performed, described device can execute above-mentioned 6th aspect and the 6th Method described in any possible design of aspect.

In a possible design, which is UPF.

Fourteenth aspect provides a kind of network slice selection device, which, which has, realizes above-mentioned 7th aspect and the 7th The function of policy control functions PCF behavior in any possible design of aspect.The function can by hardware realization, Corresponding software realization can be executed by hardware.The hardware or software include one or more corresponding with above-mentioned function Module.

In a possible design, which can be chip or integrated circuit.

In a possible design, which includes memory and processor, and memory is stored with batch processing, processing Device is used to execute the program of memory storage, and when program is performed, described device can execute above-mentioned 7th aspect and the 7th Method described in any possible design of aspect.

In a possible design, which is PCF.

9th aspect, provides a kind of chip, which is connected with memory or the chip includes memory, for reading And the software program stored in the memory is executed, to realize such as above-mentioned first aspect, second aspect, the third aspect, first Any possible design, any possible design of any possible design and the third aspect of second aspect of aspect The method.

15th aspect, provides a kind of chip, which is connected with memory or the chip includes memory, for reading The software program stored in the memory is taken and executes, to realize any possible design such as above-mentioned various aspects and various aspects Described in method.

16th aspect, provides a kind of communication system, which includes any in first aspect~the 7th aspect Device described in aspects more than two aspects or any two aspect.

17th aspect, provides a kind of computer storage medium, is stored with computer program, which includes using The instruction of method in any possible design for executing above-mentioned various aspects and various aspects.

18th aspect, provides a kind of computer program product, when computer is read and executes the computer program When product, so that computer executes method described in any possible design of above-mentioned various aspects and various aspects.

Detailed description of the invention

Fig. 1 is one of system architecture schematic diagram in the embodiment of the present application；

Fig. 2 a is two of system architecture schematic diagram in the embodiment of the present application；

Fig. 2 b is three of system architecture schematic diagram in the embodiment of the present application；

Fig. 3 is the structural schematic diagram of dynamic feature information record sheet in the embodiment of the present application；

Fig. 4 is that network is sliced one of selection method flow diagram in the embodiment of the present application；

Fig. 5 is network is sliced selection method flow diagram in the embodiment of the present application two；

Fig. 6 is the schematic diagram of acquisition characteristics information in register flow path in the embodiment of the present application；

Fig. 7 is the schematic diagram of acquisition characteristics information in session establishment process in the embodiment of the present application；

Fig. 8 a is the schematic diagram of acquisition characteristics information in signaling process in the embodiment of the present application；

Fig. 8 b be the embodiment of the present application in AMF switching flow acquisition terminal location information schematic diagram；

Fig. 9 is the schematic diagram of acquisition characteristics information in user's surface current journey in the embodiment of the present application；

Figure 10 is the schematic diagram of one of acquisition methods of mapping relations in the embodiment of the present application；

Figure 11 is two schematic diagram of the acquisition methods of mapping relations in the embodiment of the present application；

Figure 12 is that the embodiment of the present application is sliced the exemplary schematic diagram of template；

Figure 13 is three schematic diagram of the acquisition methods of mapping relations in the embodiment of the present application；

Figure 14 is the schematic diagram of open function in the embodiment of the present application；

Figure 15 is network is sliced selection method flow diagram in the embodiment of the present application three；

Figure 16 is that network is sliced one of selection device structural schematic diagram in the embodiment of the present application；

Figure 17 is that network is sliced selection device second structural representation in the embodiment of the present application；

Figure 18 is that network is sliced selection device third structural representation in the embodiment of the present application；

Figure 19 is network is sliced selection device structural schematic diagram in the embodiment of the present application four；

Figure 20 is network is sliced selection device structural schematic diagram in the embodiment of the present application five；

Figure 21 is network is sliced selection device structural schematic diagram in the embodiment of the present application six；

Figure 22 is network is sliced selection device structural schematic diagram in the embodiment of the present application seven；

Figure 23 is network is sliced selection device structural schematic diagram in the embodiment of the present application eight.

Specific embodiment

The application provides a kind of network slice selection method and device, to be sliced relevant information in the non-report network of terminal When for terminal select suitable network slice.Wherein, method and apparatus be based on the same or similar design of same invention, due to The principle that method and apparatus solves the problems, such as is similar, therefore the implementation of apparatus and method for it is no longer superfluous can to repeat place with cross-reference It states.In the description of the embodiment of the present application, "and/or" describes the incidence relation of affiliated partner, indicates may exist three kinds of relationships, For example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.Character "/" is general Indicate that forward-backward correlation object is a kind of relationship of "or".At least one refers to one or more involved in the application；It is multiple, Refer to two or more.In addition, it is necessary to understand, in the description of the present application, the vocabulary such as " first ", " second ", only For distinguishing the purpose of description, it is not understood to indicate or imply relative importance, it is suitable indication or suggestion can not to be interpreted as Sequence."at least one" refers to one or more；"at least one" refers to one or more；It is multiple to refer to two or more.

Below in conjunction with attached drawing, the embodiment of the present application is described in detail.

Network slice selection method provided by the embodiments of the present application can be adapted for the communication of different wireless access technologys In system, for example, long term evolution (long term evolution, LTE) system, the 5th generation (5th generation, 5G) are led to In more possible communication systems such as letter system.

Fig. 1 illustrates a kind of applicable system architecture schematic diagram of the embodiment of the present application, and the embodiment of the present application is not It is limited in system architecture shown in FIG. 1.Each network element shown in FIG. 1 can be hardware, be also possible to functionally divide soft Part or more than both combine after structure.As shown in Figure 1, system architecture provided by the embodiments of the present application includes terminal, access Net (access network, AN) equipment, mobile management network element (can also be referred to as are as follows: mobile management function to ps domain/mobility pipe Manage functional entity), session management network element (can also be referred to as are as follows: conversation management functional/conversation management functional entity), user's veil First (can also be referred to as are as follows: user plane functions/user plane functions entity), policy control network element (or policy control functions/strategy control Functional entity processed), network slice selection network element (or network slice selection function/network is sliced selection functional entity), network number According to analysis network element (or network data analysis function/network data analysis functional entity) and data network (data network, DN).Terminal is communicated by AN equipment and user's veil member with DN foundation.Pass through N2 between AN equipment and mobile management network element Interface is connected.User's veil member is connected between AN equipment by N3 interface, can be connect by N6 between user's veil member and DN Mouth is connected, in addition, can also pass through the connected (not shown) of N9 interface between multiple user's veils member.Wherein, interface name Only one illustrates, and the embodiment of the present application is not especially limited this.

Wherein network element shown in Fig. 1 is either network element in 4G framework, can also be network element in 5G framework.

It should be noted that network element described in the embodiment of the present application can also be known as function or functional entity, for example, moving Mobility management network element can also be known as mobile management function to ps domain or mobile management function to ps domain entity, and session management network element can also claim For conversation management functional or conversation management functional entity, user's veil member can also be known as user plane functions or user plane functions are real Body, policy control functions can also be known as policy control functions entity or policy control network element.

In this application without limitation, those skilled in the art can be by the title of said network element more for the title of each network element It is changed to other titles and executes identical function, belong to the range of the application protection.

Illustratively, system architecture shown in FIG. 1 can be the system architecture of 5G as shown in Figure 2 a, can also be such as figure The fused system architecture diagram of 4G and 5G shown in 2b.Wherein, the function of each network element or equipment is as described below.

Terminal, also referred to as user equipment (user equipment, UE), are moved at mobile station (mobile station, MS) Dynamic terminal (mobile terminal, MT), terminal device etc. are a kind of to provide a user setting for voice and/or data connectivity It is standby.For example, terminal includes the handheld device with wireless connecting function, mobile unit etc..Currently, terminal may is that mobile phone (mobile phone), tablet computer, laptop, palm PC, mobile internet device (mobile internet Device, MID), wearable device, virtual reality (virtual reality, VR) equipment, augmented reality (augmented Reality, AR) equipment, the wireless terminal in Industry Control (industrial control), unmanned (self Driving the wireless terminal in wireless terminal, remote operation (remote medical surgery) in), smart grid The wireless terminal in wireless terminal, transportation safety (transportation safety) in (smart grid), smart city The wireless terminal etc. in wireless terminal or wisdom family (smart home) in (smart city).

AN equipment is responsible for the wireless side access of terminal, and possible deployment form includes: centralized unit (centralized Unit, CU) and distributed unit (distributed unit, DU) separation scene；And the scene of single site.Single site includes GNB/NR-NB, transmission receiving point (transmission reception point, TRP), evolved node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), node B (Node B, NB), base Station control (base station controller, BSC), base transceiver station (base transceiver station, BTS), Home eNodeB (for example, home evolved NodeB or home Node B, HNB), Base Band Unit (base band Unit, BBU) or Wireless Fidelity (wireless fidelity, Wifi) access point (access point, AP) etc..It is logical in 5G In letter system, single site gNB/NR-NB.Wherein, CU support wireless heterogeneous networks (radio resource control, RRC), Packet Data Convergence Protocol (packet data convergence protocol, PDCP), business datum adapting protocol Agreements such as (service data adaptation protocol, SDAP).CU can generally be deployed in center office point, have more Computing resource abundant.DU mainly supports wireless chain control layer (radio link control, RLC), media access control Layer (media access control, MAC) and physical layer (PHY) agreement.DU generally uses distributed deployment mode, usual The next CU of situation will connect more than one DU.GNB has the function of CU and DU, and usually as the form portion of single site Administration.

Mobile management network element can be the access in 5G and mobility management entity (access and mobility Management function, AMF)；It can also be the control plane function of gateway in 4G (Serving GateWay, SGW) It can (SGW-C) or mobility management entity (mobility management entity, MME)；The either above network element fusion The all or part of the control function formed afterwards.Mobile management network element is responsible for the access of terminal and mobility pipe in mobile network Reason.Wherein, AMF is responsible for the access and mobile management of terminal, NAS message routing, SMF selection etc..AMF can be used as centre Network element, for the session management messages between transmission terminal and SMF.

Session management network element is responsible for forward-path management, such as to user's veil member downward message forwarding strategy, indicates user Veil member carries out Message processing and forwarding according to message forwarding strategy.Session management network element can be the conversation management functional in 5G (session management function, SMF) is responsible for session management, such as conversation establishing/modification/deletion, user's veil Member selection and the distribution and management of user face tunnel information etc..Session management network element can also be the control of the gateway in 4G The control plane of face function (SGW-C) processed or Packet Data Network (packet data network, PDN) gateway (gate way, GW) Function (PGW-C), session management network element can also be whole or the portion of the control function formed after the fusion of SMF and PGW-C network element Point.

User's veil member, can be the user plane functions (user plane function, UPF) in 5G framework, such as Fig. 2 a Or shown in Fig. 2 b.UPF is responsible for Message processing and forwarding.User's veil member can also be PGW forwarding surface function (PGW-U), Physics or the virtual forwarding devices such as the forwarding surface function (SGW-U) of SGW, router, interchanger.

Policy control functions, can be in 5G framework policy control functions (policy control function, PCF) entity can be used for being responsible for the functions such as policy control decision.

Network slice selection network element (or network slice selection function/network is sliced selection functional entity), can be 5G frame Network in structure is sliced selection function (network slice selection function, NSSF), for the industry for terminal Business selects suitable network slice.

Network data analysis network element (or network data analysis function/network data analysis functional entity), can be 5G frame Network data analysis function (network data analytics function, NWDAF) in structure, for for terminal or The service functions such as network provided data storage, analysis.

DN provides data transport service for terminal, can be PDN network, such as internet (internet), IP multimedia industry Be engaged in (IP Multi-media Service, IMS) etc..

Currently, there are three types of types for the network slice of third generation partner program (3GPP) protocol definition, it is enhancing respectively Mobile broadband (enhanced mobile broadband, eMBB), highly reliable (the ultra-reliable low of low time delay Latency communications, uRLLC) and extensive Internet of Things (massive Internet of Things, mIoT). Every kind of network slice type is directed to specific type of service.Such as: eMBB slice type is high for high data rate, mobility Business；URLLC is sliced the communication scenes that can be used for handling high reliability and low delay；MIoT slice can serve quantity More, small data quantity, tolerable time delay and the business (such as sensor, wearable device business) infrequently accessed.With user and industry The customizing requirement of network service is continuously improved in business, and the differentiation of heterogeneous networks service further increases.In 5G communication network Research is deeply disposed under the background being unfolded on a large scale with commercialization, and the type of network slice can substantially increase in predictable future It is long.

Under every kind of network slice type, one or more network slice examples can be disposed.One network is sliced example It is a static network, refers on network infrastructure physically or a virtually, is customized according to different demands for services Different logical network.It includes terminal, access net, transmission network, core net and application service that network slice example, which can be one, The complete end to end network of device, is capable of providing complete communication service, has certain network capabilities.Network is sliced example can also To be terminal, access net, transmission network, any combination of core net and application server.In the description of the embodiment of the present application, network Slice example and network slice type are indicated with network slice, when being described to network slice, can refer to that network is sliced Type, or refer to that network is sliced example.

Existing protocol defines a terminal can access 8 network slices simultaneously, and a business of terminal is by a net Network is sliced to provide service.For a service selection one suitable network slice of terminal, guarantee business institute can aid in The network performance needed improves network resource utilization, improves user to business experience sense, enhances the commercial value of user.This The method that application embodiment provides basically describes how the suitable network slice of the service selection for terminal, especially for not having Standby report network slice selection auxiliary information (Network Slice Selection Assistance Information, NSSAI the terminal of ability).In the system architecture of the application, when terminal has the ability for reporting NSSAI, network can be with According to the correct network slice of service selection that NSSAI is terminal.It introduces in detail below, how for without reporting How the method that the terminal of NSSAI ability selects suitable network slice is the business choosing for the terminal for not reporting NSSAI in other words Select suitable network slice.Certainly, this method can be applicable to the terminal of any performance, for example, having the energy for reporting NSSAI The terminal of power can also be applied, alternatively, not reporting the terminal of NSSAI can be applicable in, alternatively, regardless of whether reporting NSSAI's Terminal can be applicable in, and the application is not construed as limiting.

The embodiment of the present application it is described below in, mobile management network element is introduced by taking AMF as an example, network slice selection Network element is introduced by taking NSSF as an example, and network data analysis network element is introduced by taking NWDAF as an example, AN equipment by taking base station as an example into Row is introduced, and policy control functions are introduced by taking PCF as an example, and user's veil member is introduced by taking UPF as an example, session management network element It is introduced, is not construed as limiting by taking SMF as an example.

For convenience of understanding, " dynamic feature information " involved in the embodiment of the present application is illustrated first.Behavioral characteristics The suitable network slice of service selection that information is used for as terminal, certainly, the title of dynamic feature information is only exemplary, can Also may be used with being changed to other titles.

In the embodiment of the present application, terminal is using the network slice accessed to carry out in business procession, generates and whole The relevant some characteristic informations of the business at end, also some characteristic informations are related with the feature of terminal itself, for example, with terminal Ambulant feature is related.Because a terminal may have multiple business, feature letter related with the feature of terminal itself Breath is suitable for each business of terminal.Above-mentioned terminal is properly termed as in these characteristic informations that the process for carrying out business processing generates Dynamic feature information.Dynamic feature information can be information related with the feature of terminal itself, such as: the movement speed of the terminal Degree, the switching historical information of the terminal, the change in location frequency of the terminal.Dynamic feature information can also be the business with terminal Related information, such as: the terminal initiates the frequency of the session of the business, AMF initiates the clothes of the frequency of paging request, the business Be engaged in quality (quality of service, QoS) negotiate frequency, the QoS negotiation result of the business of the terminal, the terminal should The average data packet length of business, the data packet interarrival times of the business of the terminal, the terminal the business charging Strategy；Wherein, paging request is for paging the terminal.

Based on the above-mentioned description to dynamic feature information, from different angles from the point of view of, this application involves behavioral characteristics letter Breath can also have different classification, be introduced by taking two kinds of classification as an example below.

In a kind of possible implementation, as shown in table 1, dynamic feature information may include signaling plane, data surface and meter The characteristic information of bothersome these three levels of part.

Specifically, the characteristic information of signaling plane includes following one or more: the switching of the movement velocity, terminal of terminal is gone through History information, the change in location frequency of terminal, the frequency of the session of terminal originating service, network side initiate paging request frequency, The QoS of the business of the terminal negotiates frequency, the QoS negotiation result of the business of the terminal.

Wherein, this application involves to frequency can be construed to the unit time or set the number that occurs in duration.

The characteristic information of data surface includes following one or more: average data packet length, the terminal of the business of terminal The data packet interarrival times of business.

Charging event includes the charging policy for the business of terminal.

It should be pointed out that different dynamic feature informations can be acquired by different equipment, as shown in table 1:

Table 1

In conjunction with shown in table 1:

1) the switching historical information of the movement velocity of terminal and terminal is acquired by access network equipment (i.e. base station).For example, Base station switching of acquisition terminal in switching request (handover request) message in switching (handover) process is gone through History information and terminal movement velocity.Wherein, time that base station can switch between different community whithin a period of time according to terminal Number is to determine that the movement velocity of terminal optionally can be divided into three high speed, middling speed, low speed class by the movement velocity of terminal (or grade), the characteristic information of the movement velocity for the terminal that base station reports every time, can with the class of the movement velocity of reporting terminal, Can certainly the switching times of reporting terminal whithin a period of time, or report the movement velocity phase according to other according to terminal The value of movement velocity close, that terminal can be characterized.The switching historical information of terminal is the relevant some letters of switching to terminal Breath, such as can be terminal per the time interval between switching twice.For example, the switching historical information of terminal may include Whether switching of the terminal between cell 1 and cell 2 be frequent, for example, terminal is less than threshold per the time interval between switching twice When value, represents switching frequently, otherwise represent switching infrequently.The granularity of above-mentioned switching can be handover between cells or other The switching of granularity.For example, according to characteristic information, (i.e. class is high speed) bigger for movement velocity or switching are compared Frequent business selects slice type to be sliced for the network of V2X；(i.e. class is low speed) smaller for movement velocity or switching The very low business of frequency selects slice type to be sliced for the network of mIoT.

2) the change in location frequency of terminal, is acquired by AMF or is counted.AMF is acquired or is counted in some processes, example Such as, in registration management (registration management) process, AMF receives the position in the N2message that base station is sent Confidence ceases (location information).Location information may include cell ID or tracking area identification (tracking Area identity, TAI).The change in location frequency of the terminal of AMF acquisition includes the frequency of these information changes, information change Frequency be determined for the position of terminal and whether often change.The whether often frequency that variation can change according to location information Rate is measured, for example, the frequency of change in location, which is higher than threshold value, represents often variation, it is (or relatively solid otherwise to represent infrequently variation It is fixed).For example, according to this characteristic information of the change in location frequency of terminal, for the business that the position of terminal often changes, Slice type is selected to be sliced for the network of eMBB or V2X；It is relatively fixed for the position of terminal, select slice type for mIoT's Network slice.

3) frequency of the session of terminal originating service is acquired by SMF or is counted.For example, SMF is in service request In (service request) process, session is more to SMF transmission Packet Data Unit (packet data unit, PDU) by AMF New context request (Nsmf_PDUSession_UpdateSMContext Request), in another example, in session management process In, AMF sends PDU session establishment context request (Namf_PDUSession_CreateSMContext to SMF Request).Specifically, the number or frequency of some message such as above-mentioned service request or session request that SMF statistics terminal is initiated Rate.For example, being acyclic business for initiating session, can choose the net that slice type is eMBB according to characteristic information Network slice；It is periodic business for initiating session, can choose the network that slice type is mIoT and be sliced.

4) network side initiates the frequency of paging request, is acquired by AMF or is counted.AMF is specifically counted between certain time Every the middle number for initiating paging request (i.e. paging request) to base station, which is for call terminal.Example Such as, according to characteristic information, the business regular for the frequency of paging request can choose the network that slice type is mIoT Slice.Wherein, the regular number that can refer to initiation paging request in same time interval is fixed, for example, one week Once.

5) QoS of the business of the terminal negotiates frequency, the QoS negotiation result of the business of the terminal, is acquired by SMF Or statistics.In various businesses process, the QoS and SMF of default are provided according to QoS, SMF of the QoS of terminal request, terminal unit contractual The resource situation of itself needs to carry out the negotiation of QoS, to negotiate the feasible QoS of the business.Various businesses process includes PDU Process (PDU Session is changed in session establishment process (PDU Session Establishment), PDU session Modification), in PDU session establishment process, terminal can be carried into the PDU session establishment request that base station is sent QoS information.QoS, which negotiates resulting result, under normal circumstances can only reduce QoS, therefore, for frequently initiating to negotiate or negotiate to lose The business lost, it can be determined that the QoS needed for the business is relatively high, then according to characteristic information, for frequently initiating to negotiate Or frequently negotiate the business of failure, selection is capable of providing the network slice of high experience sense, such as selection is capable of providing high bandwidth The network of video class is sliced.

6) the average data packet length of the business of terminal, is acquired by UPF or is counted, the data packet in UPF statistical data face Length or average data packet length, it is long packet that the length of data packet, which is greater than given threshold, is short no more than the given threshold Packet.According to characteristic information, the business of given threshold is greater than for average data packet length, selects slice type for the network of eMBB Slice is not more than average data packet length the business of the given threshold, and slice type is selected to be sliced for the network of mIoT.

7) the data packet interarrival times of the business of terminal, are acquired by UPF or are counted, the number in UPF statistical data face According to Inter-arrival Time, i.e. time interval between the arrival of every two data packet, according to this feature information, to select network to be sliced. For example, data packet interarrival times are the business of regular length, slice type is selected to be sliced for the network of mIoT.

8) charging policy is acquired by PCF or is counted.For example, SMF is sent to PCF in PDU session establishment process Policy control, which obtains, obtains charging policy in operation (Npcf_SMPolicyControl_Get operation).Different business Charging policy it is different, for example, exempting from charging for certain business；For certain business, detailed charging is carried out.Such as: for IoT The business of type carries out exempting from charging or rough charging, carries out classification or the different charging such as at times for the business of eMBB type Standard carries out detailed charging.PCF counts the charging policy of different business, according to this feature information, to select the net of corresponding types Network slice.

According to it is above-mentioned 1)~8) in description to dynamic feature information, it is believed that one group of dynamic feature information and a net Network slice has mapping relations, wherein one group of dynamic feature information may include one or more dynamic feature informations.It is specific real In existing, NSSF or NWDAF can be according to the mapping relations being obtained ahead of time, to determine the corresponding network slice of characteristic information, also Mapping relations can not be obtained ahead of time, and after receiving characteristic information, suitable network slice is judged according to characteristic information. For example, the net that movement velocity is this characteristic information of high speed and slice type is V2X of terminal is obtained ahead of time in NSSF or NWDAF Network slice has mapping relations, be the movement velocity of terminal is the business of high speed according to the mapping relations, select slice type for The network of V2X is sliced.It is also possible that NSSF or NWDAF are in the movement speed for receiving terminal when mapping relations are not obtained ahead of time After degree is this characteristic information of high speed, according to this feature information, the network that the service selection slice type for the terminal is V2X is cut Piece.

Different characteristic informations, which is described above, respectively is acquired by which network element.Each network element is receiving acquisition When the notice of characteristic information, the business contexts of terminal can be respectively created, for example, applying for one piece of memory space within a context To store characteristic information, and collected characteristic information is recorded in the memory space within a context.

For example, applying for one piece within a context when AMF in register flow path, creates the business contexts of the terminal Memory space is used to store the change in location frequency of terminal, and records the change in location frequency of terminal；SMF is in PDU session establishment When, apply for that one piece of memory space is used for the session characteristics information of storage service in the business contexts of terminal, and start The session characteristics information of record traffic.Subsequent user repeated registration, PDU Session repeat the processes such as foundation, and AMF and SMF divide Corresponding characteristic information is not recorded persistently within a context.

It should be noted that table 1 is a citing to the classification of characteristic information, each network element believes feature for convenience Cease the classification for being stored and being expressed and carried out.Each network element can be remembered in a manner of characteristic information record sheet within a context The collected characteristic information of network element is recorded, characteristic information record sheet can carry out the book of final entry to characteristic information in the way of table 1, Network element records or updates collected characteristic information in the case where characteristic information record sheet corresponds to classification.It is of course also possible to without dividing Class record, network element record or update collected characteristic information in applied memory space within a context.It can be with It is recorded according to other classification.For example, it is also possible to be divided according to three kinds of handoff features, position feature and business information classifications Class.Each network element stores characteristic information according to these types classification.In the case where this classification, characteristic information record sheet The specific structure is shown in FIG. 3.Short-term in Fig. 3 represents classification, and long line represents such subcategory now.For example, switching is special Movement velocity (Fig. 3 shown in be movement velocity), the switching historical information of terminal of the sign including terminal (are switching shown in Fig. 3 Historical information)；Position feature includes the change in location frequency of terminal；Business information is divided into meeting according to the different of network element of acquisition again Feature, number biography feature and billing features are talked about, session characteristics include that the frequency of network side initiation paging request (is to seek shown in Fig. 3 Exhale frequency), the QoS of the frequency (being to initiate session ratio shown in Fig. 3) of the session of terminal originating service, the business of the terminal Negotiate frequency (being to negotiate frequency shown in Fig. 3), the QoS negotiation result of terminal traffic (Fig. 3 is not shown)；It includes being somebody's turn to do that number, which passes feature, Average data packet length (being average data packet length shown in Fig. 3), the data of the business of the terminal of the business of terminal Packet interarrival times (being data Inter-arrival Time shown in Fig. 3)；Billing features include the charging plan for the business of terminal Slightly (being charging policy shown in Fig. 3).The structure of characteristic information record sheet is shown in following figure 6~Fig. 9 with knot shown in Fig. 3 Based on structure.

Based on above-mentioned introduction, as shown in figure 4, a kind of process of network slice selection method provided by the embodiments of the present application is such as It is lower described.

S401, AMF send slice selection request (slice select request) to NSSF, and NSSF is received from AMF should Slice selection request.

Wherein, which selects request to can be used for requesting to be sliced for the service selection network of terminal, and slice selection is asked Can be with the dynamic feature information of carried terminal in asking, the dynamic feature information is for selecting the network to be sliced.

Illustratively, AMF obtains the dynamic feature information before sending slice selection request to NSSF.

Wherein, in conjunction with the above-mentioned description to dynamic feature information, dynamic feature information may include one or more of Dynamic feature information: movement velocity, the switching historical information of the terminal, the change in location frequency of the terminal, the end of the terminal The frequency of the session of the business is initiated at end, the AMF initiates the service quality QoS of the frequency of paging request, the business of the terminal Negotiate frequency, the QoS negotiation result of the business of the terminal, the average data packet length of the business of the terminal, the terminal The charging policy of the data packet interarrival times of business, the business of the terminal；Wherein, paging request is for paging the end End.

Based on the type of above-mentioned dynamic feature information, the dynamic feature information that AMF is obtained can be itself acquisition, can also To be received from other network elements in addition to the AMF.

Illustratively, the change in location frequency of the available terminal of AMF and/or AMF initiate the frequency of paging request； AMF can obtain the movement velocity of the terminal and/or the switching historical information of the terminal from access network equipment；AMF can be from SMF The QoS of the frequency, the business of the terminal that obtain the session of initiation business negotiates frequency and the QoS of the business of the terminal negotiates At least one of as a result；AMF can obtain the average data packet length of business and/or the data packet arrival time of business from UPF Interval；AMF can obtain the charging policy of business from PCF.

Wherein, AMF obtains the possible implementation of the change in location frequency of terminal are as follows:

AMF receives N2 message (can be denoted as the first N2 message) from access network equipment in registration management process, and the first N2 disappears The location information of the terminal is carried in breath, location information may include cell ID or TAI, alternatively, AMF is in se ce request procedure In from access network equipment receive the 2nd N2 message, the location information of the terminal is carried in the 2nd N2 message.AMF receives the terminal Location information after, the change in location frequency of the terminal is determined according to the location information of the terminal.

Wherein, AMF initiates the possible implementation for paging the frequency of the paging request of the terminal are as follows:

AMF count setting time in the terminal initiate paging request number, according in the setting time counted to The terminal initiates the number of paging request, determines that AMF initiates the frequency of paging request.

S402, NSSF send the identification information that the network is sliced to AMF, and AMF receives the mark letter that network is sliced from NSSF Breath.

Wherein, the identification information of network slice is used to be identified as the network slice of the service selection of terminal.For example, network The identification information of slice is the mark (network slice instance identifier, NSI ID) that network is sliced example Optionally, NSSF receives the slice from AMF and selects after requesting, the above method further include: NSSF disappears according to slice selection request Breath is sliced for the service selection network of the terminal.

Before S401AMF sends slice selection request to NSSF, AMF can also obtain the dynamic feature information of terminal.

Wherein, AMF can go the dynamic feature information of acquisition terminal by itself, can also receive terminal from each network element Dynamic feature information obtain the dynamic feature information of terminal.

In one example, AMF triggers the dynamic feature information of each network element acquisition terminal.

Specifically, terminal is sliced using default network after access default network slice and carries out business processing.Using silent Recognize network slice to carry out in business procession, generates dynamic feature information.

AMF to each network element by sending a notification message, to trigger the dynamic feature information of each network acquisition terminal.Respectively A network element receives the notification message of AMF transmission.The notification message can be the one kind individually sent new signaling or service and disappear Breath, can also be carried in existing signaling or service message.Each network element may include access network equipment, PCF, SMF and UPF.Wherein, AMF notifies the dynamic feature information of acquisition terminal by SMF to UPF, disappears it is, AMF sends notice to SMF After breath, dynamic feature information of the SMF to UPF notice acquisition terminal.

In another example, AMF itself also can acquisition terminal dynamic feature information.

Specifically, AMF, access network equipment, PCF, SMF and UPF respectively can be according to such as to the dynamic feature information of terminal It is above-mentioned 1)~8) described in mode be acquired.

Wherein, acquisition also may include receive, each network element in the received message acquisition terminal behavioral characteristics letter Breath.In a possible implementation, AMF, access network equipment, PCF, SMF and UPF are in the business contexts for creating terminal When, the dynamic feature information of terminal is added within a context, for example, applying for one piece of memory space within a context, for creating Characteristic information record sheet records the characteristic information being collected into record sheet.

Optionally, AMF and each network element can be distinguished according to the mark (for example, DN title (DN name, DNN)) of DN Different business.It is established in session process in terminal, the information of each available DNN of network element.

Below with reference to process shown in Fig. 4, the selection method of network provided by the embodiments of the present application slice is done in more detail Description.As shown in figure 5, the process of network slice selection method is as described below.It should be noted that this method process is to compare It is comprehensive to introduce, some of them step or it is described as possible implementation, any two in this method process or any two A above step, it is optional situation in some steps that can form a embodiment of the present application, which needs scheme to be protected, Under, remaining step, which still can form the embodiment of the present application, needs scheme to be protected, and optional step can also have other possible Implementation.For example, S507~S509 can be equivalent to scheme shown in Fig. 4, belonging to the embodiment of the present application needs side to be protected Case.In addition, being respectively executing subject institute with access network equipment, AMF, SMF, NSSF, UPF, PCF or NWDAF in being described below The step of execution, can be respectively formed independent technical solution.

It is illustrated so that the business of terminal is session as an example.

S501, terminal send session establishment request message to AMF, and AMF receives the session establishment request message that terminal is sent.

Wherein, NSSAI is not carried in the session establishment request message, or do not carry other assisted Selection network slices Information.It may include the identification information of terminal in the session establishment request message.

S502, AMF are sliced according to the service selection one initial network that local policy is terminal.

Wherein, which is referred to as default network slice or default web slice.

Illustratively, AMF is the service selection one that service selection one SMF, SMF of terminal are terminal according to local policy A UPF.

Wherein, local policy may be embodied in the subscription data of terminal, and AMF is whole according to the subscription data of the terminal The service selection SMF, SMF at end are the service selection UPF of terminal according to the subscription data of the terminal.

The dynamic feature information of S503, AMF acquisition terminal.

Wherein, AMF can go the dynamic feature information of acquisition terminal by itself, can also receive terminal from each network element Dynamic feature information obtain the dynamic feature information of terminal.It specifically may refer to the associated description in embodiment illustrated in fig. 4, It repeats no more.Wherein, AMF is realized from the dynamic feature information that each network element receives terminal by S504~S506.

S504, AMF trigger each network element and acquire dynamic feature information.

S505, AMF, access network equipment, PCF, SMF and UPF are respectively acquired the dynamic feature information of terminal.

Detail is referring to the description in method shown in Fig. 4.

The dynamic feature information of the terminal of acquisition is sent to AMF by S506, each network element, and AMF, which is received, comes from each network element The dynamic feature information of transmission.

Specifically, the dynamic feature information (can be referred to as characteristic information) of collected terminal is sent to by each network element AMF.Wherein, UPF is to be sent to AMF by SMF.Collected characteristic information is sent to SMF by UPF, and SMF adopts itself The characteristic information collected and the characteristic information from UPF received are sent to AMF together.Access network equipment and PCF respectively will Respective collected characteristic information is sent to AMF.

In a possible implementation, each network element can send feature letter to AMF when the threshold value of setting is reached Breath.The threshold value can be time threshold, which can be specified in agreement, be also possible to AMF transmission, such as above-mentioned The threshold value is carried in notification message.Each network element upon receiving the notification message, starts timing, in arrival time threshold value, hair It rises and reports.What the threshold value of PCF can be set is slightly less than the threshold value of other network elements.

S507, AMF receive session establishment request message from terminal.

Wherein, which can be used for requesting to establish session for the business of the terminal.

Dynamic feature information is sent to NSSF by S508, AMF, and NSSF receives the dynamic feature information that AMF is sent.

Specifically, AMF sends slice selection request message to NSSF, dynamic spy is carried in slice selection request message Reference breath.Illustratively, the characteristic information that AMF sends itself collected characteristic information and each network element for being collected into as The dynamic feature information carried in slice selection request.AMF waits the terminal to send out again after summarizing to obtain dynamic feature information Play the session establishment request message (or being known as slice selection request) for the business.

S509, NSSF are that the service selection network of terminal is sliced.

Optionally, NSSF gets the mapping relations of dynamic feature information and network slice, and NSSF can be according to the mapping Relation acquisition selects network corresponding to dynamic feature information in request to be sliced the net as the service selection for terminal to slice Network slice.Wherein, specific mapping mode the embodiment of the present application is not construed as limiting, for example, it may be map in the form of a list, or It is mapped in the form of function.

Illustratively, NSSF is after the dynamic feature information for receiving AMF transmission, and according to mapping relations, selection is dynamic with this There is state characteristic information the network of corresponding relationship to be sliced, and selected network slice is the suitable net of the service selection of terminal Network slice.

Wherein, NSSF selection with the dynamic feature information there is the network of corresponding relationship to be sliced, can be in the following manner.

Due to AMF send dynamic feature information may include various features information, it is thus possible to there are it is following it is several can The case where energy:

Assuming that the mapping relations for dynamic feature information and the network slice that NSSF is obtained are as follows: a kind of dynamic feature information is corresponding One network slice, then:

If in dynamic feature information including a kind of dynamic feature information, NSSF selection and a kind of this dynamic feature information tool There is the network of corresponding relationship to be sliced；Alternatively, NSSF selection is a variety of if in dynamic feature information including a variety of dynamic feature informations One of dynamic feature information in dynamic feature information, and select the net that there is corresponding relationship with this dynamic feature information Network slice, optionally, can choose the higher dynamic feature information of genre priority grade of dynamic feature information, priority can root It is provided according to agreement or according to network configuration.

For example, change in location frequency of the NSSF according to the terminal in dynamic feature information, judges the change in location frequency of terminal Rate variation is relatively slow (there is no variations such as in one month), then slice type is selected to be sliced for the network of mIoT.Specifically, can It is sliced with the network according to the mIoT type of load distribution selection light load, one can also be selected in the way of polling The network of mIoT type is sliced.

Assuming that the mapping relations for dynamic feature information and the network slice that NSSF is obtained are as follows: the combination pair of various features information Answer a network slice, then:

It, can also be with NSSF selects the combination institute of various features information if in dynamic feature information including various features information Corresponding network slice.

For example, NSSF is according to the characteristic information of the average data packet length of terminal traffic and the meeting of terminal originating service The two characteristic informations of the frequency of words obtain the data packet length of the business between 50~300bytes, initiate the business The frequency of session is 10Hz, then slice type is selected to be sliced for the network of V2X, similar, can be selected according to load distribution negative The network slice for carrying lighter V2X type, can also select the network of a V2X type to be sliced in the way of polling.

The identification information that the network of selection is sliced is notified the mark that network slice is received to AMF, AMF by S510, NSSF Information.

Illustratively, NSSF sends slice selection response (slice select response) message to AMF, is being sliced It selects to carry the identification information for network slice in response message, for example, the identification information of network slice can be network It is sliced the mark (i.e. NSI ID) of example, AMF is determined as the network slice of the business service of terminal according to the NSI ID.

The process of AMF, access network equipment, PCF, SMF and UPF acquisition characteristics information design is introduced below.

Each network element can be acquired and count to characteristic information in several different signaling processes, below will be to several The process kind being related to is illustrated, and several processes being related to are normal process below, the title of each message of process and Transmission sequence is referred to existing normal process, and the embodiment of the present application is by carrying information in the message in existing normal process Or information is collected, the selection method of Lai Shixian network slice.Specifically, with according to handoff features, position feature and business information Three kinds of classifications are introduced for being classified, and the contents such as described process or characteristic information are suitable for other classification forms.

In Fig. 6~Fig. 9, the characteristic information black overstriking circle that network element is filled in characteristic information record sheet goes out, for example, Base station fills in handoff features information in Fig. 6, and AMF fills in paging frequency and position feature information.

As shown in fig. 6, AMF can collect and record the change in location frequency of terminal and AMF initiation is sought in register flow path The frequency asked is called for, access network equipment (i.e. base station) can collect and record the handoff features information of terminal, the movement including terminal The switching historical information of speed and terminal.Wherein, register flow path includes initial registration process and/or repeated registration process.Registration Process is referred to the description in existing 23.502 standard of 3GPP TS to register flow path.

As shown in fig. 7, SMF is collected and recorded for each business in PDU session establishment process: network side is initiated The frequency of the session of the frequency, terminal originating service of paging request, the QoS of the business of the terminal negotiate frequency, terminal traffic QoS negotiation result.PCF records charging policy.Wherein, PDU session establishment process is referred to existing 3GPP TS23.502 mark To the description of PDU session establishment process in standard.

As shown in Figure 8 a, network element records characteristic information in some signaling processes, for example, service request (service Request) (PDU session modification) process is changed in process, switching (handover) process, PDU session.Its In, these above-mentioned signaling processes are referred to the description in existing 23.502 standard of 3GPP TS to these signaling processes.Specifically , in these signaling processes, access network equipment (i.e. base station) collects and records the movement velocity of terminal, the switching history of terminal Information；AMF collects and records the change in location frequency of terminal；SMF is collected and recorded: the frequency of network side initiation paging request, The frequency of the session of terminal originating service, the QoS of the business of the terminal negotiate frequency, the QoS of the business of the terminal negotiates As a result；PCF collects and records charging policy.For example, as shown in Figure 8 b, AMF obtains the position of terminal in switching flow Change frequency, specifically, AMF receives PDU session updates context response (Nsmf_PDUSession_ from SMF UpdatSMContext Response) message, and to access network equipment transmitting path Handover Request Acknowledge (N2Path Switch Request Ack) message, AMF from SMF receive PDU session updates context response information after, sent out to access network equipment Before sending path switching request acknowledgement message, AMF collects and records the location information of terminal, is determined according to the location information of terminal The change in location frequency of terminal.

As shown in figure 9, network element records characteristic information in user's surface current journey, for example, PCF is acquired simultaneously in user's surface current journey Charging policy is counted, UPF acquires and count the average data packet length of the business of terminal, the business of terminal in user's surface current journey Data packet interarrival times.

NSSF once introduced below is how to obtain the mapping relations that dynamic feature information is sliced with network (to may be simply referred to as reflecting Penetrate relationship).

In a kind of possible implementation, NSSF learns historical data, include in historical data history service just The characteristic information of the network slice and history service that really access obtains mapping relations by the study to historical data.

Illustratively, as shown in Figure 10, terminal has the ability for reporting NSSAI, and NSSF is according to the NSSAI that terminal reports The service access network of terminal is sliced.NSSF triggers the dynamic feature information of the network element acquisition terminal in these networks slice, such as AMF of the NSSF into these networks slice sends a notification message, and AMF, which is reinformed, carrys out acquisition characteristics information to each network element.Figure 10 In show two networks slice, indicated with slice X and slice Y.The specific process for notifying and acquiring can be found in institute above The related content of description, details are not described herein.AMF in each network slice summarizes the characteristic information of acquisition, obtains The corresponding relationship (or mapping relations) that dynamic feature information and network are sliced is reported to NSSF by dynamic feature information, and NSSF is just The mapping relations of dynamic feature information and network slice are obtained.

In alternatively possible implementation, as shown in figure 11, NSSMF is cut when planned network is sliced template in network Configuration network is sliced corresponding dynamic feature information in piece template, and for NSSMF when on-premise network is sliced, parsing network is sliced template In mapping relations, mapping relations are notified to NSSF.A kind of example of possible network slice template is as shown in figure 12, slice Type is eMBB, and slice instance number is 001, and corresponding dynamic feature information includes: to initiate traffic frequencies for 10s, average data Packet length is 500bytes, and transmission data packet frequency is 1s, it is also possible to including other characteristic informations.

In another possible implementation, as shown in figure 13, dynamic spy is locally configured to NSSF in operation management face (OM) The mapping relations of reference breath and network slice, NSSF is in the local maintenance mapping relations.

As shown in figure 14, it the embodiment of the present application also provides a kind of method of selection network slice, is taken by third-party application Device be engaged in select network to be sliced, as described below.

S1401, AMF send slice selection request to NSSF, and NSSF receives the slice that AMF is sent and selects request.

Wherein, which selects the dynamic feature information of carried terminal in request.Wherein, dynamic feature information can be by AMF is obtained, and preparation method may refer to S501~S506 in Fig. 5, and details are not described herein.

S1402, NSSF send the dynamic feature information that S1401 is received, third-party application to third-party application server Server receives the dynamic feature information that NSSF is sent.

Wherein, the IP address of third-party application server can be with static configuration on NSSF.

S1403, third-party application server are terminal according to slice selection strategy and the dynamic feature information received Service selection network slice.

Wherein, slice selection strategy can also be given with static configuration on the third-party application server with dynamic configuration The third-party application server, not limits.

The identification information that the network of selection is sliced is sent to NSSF by S1404, third-party application server, and NSSF receives the The identification information for the network slice that tripartite's application server is sent.

Wherein, the identification information of network slice may refer to the associated description in previous embodiment, repeat no more.

The identification information that network is sliced is sent to AMF by S1405, NSSF, and AMF receives the mark for the network slice that NSSF is sent Know information.

Wherein, the description of this step can be found in S510.

The network slice selection method provided through the foregoing embodiment, in the case where terminal has and reports NSSAI message, It can be service selection one suitable network slice of terminal, and the program is disobeyed according to the dynamic feature information of terminal Rely some static informations of network side acquisition that network is selected to be sliced, but network slice, energy are selected according to dynamic feature information Enough business with terminal change and the change of adaptability, have flexibility, in addition, being sliced selection method, energy by above-mentioned network Network slices enough different for different service selections can select respectively when terminal accesses multiple business for multiple business Suitable network slice improves network resource utilization in short, network performance required for business can be ensured, improves user To the experience sense of business, enhance the commercial value of user.

It is sliced selection method in conjunction with the network that above-described embodiment describes, in another possible design, the application is implemented The operation of selection network slice can also be executed by NWDAF in example, under this application scenarios, as shown in figure 15, Yi Zhongke The implementation of energy is as described below.The part details operation of following methods can quote the network slice choosing of above-described embodiment description Description in selection method, overlaps will not be repeated.

The description of the same S501~S502 of S1501~S1502.

S1503, AMF send request message to NWDAF, and NWDAF receives the request message that AMF is sent.

Wherein, in the request message carried terminal identification information, for example, user's permanent identification (subscription Permanent identifier, SUPI) or international mobile subscriber identification code (international mobile Subscriber identity, IMSI), for inquiring the letter that network corresponding with the identification information of the terminal is sliced to NWDAF Breath.The information of network slice described here can refer to the mark letter for the network slice that the business service for the terminal is crossed Breath also can refer to the information of assisted Selection network slice.Based on this, AMF can be to by the identification information of the terminal NWDAF inquiry is the information for the network slice that the service access of the terminal is crossed, alternatively, being used for assisted Selection net to NWDAF inquiry The information of network slice, the information for assisted Selection network slice can be NSSAI corresponding with the identification information of the terminal.

S1504, NWDAF determine that there is no network corresponding with the identification information of terminal slices according to the request message Information, triggering AMF acquire the dynamic feature information of the terminal.

The explanation of the information of network slice is as described in S1503.

Same S504~the S506 of S1505~S1507.It should be noted that PCF can there are communication interface, In with NWDAF In S1505~S1507, NWDAF can directly send the notification message of acquisition dynamic feature information to PCF, and PCF can also be direct Collected dynamic feature information is returned to NWDAF.

Dynamic feature information is sent to NWDAF by S1508, AMF, and NWDAF receives the dynamic feature information that AMF is sent.

The same S507 of S1509.

S1510, AMF send slice selection request message to NSSF, and NSSF receives the slice selection request that AMF is sent and disappears Breath.

Optionally, the identification information that the terminal is carried in slice selection request message, can also carry the behavioral characteristics Information.

S1511, NSSF send slice selection request message to NWDAF, and NWDAF receives the slice that NSSF is sent and selects request Message.

S1512, NWDAF select request message according to the slice received, are that the service selection network of terminal is sliced.

Optionally, NWDAF selects the dynamic feature information carried in request message according to the slice, is the business of terminal Network slice is selected, alternatively, NWDAF can also select the identification information of the terminal carried in request message according to the slice, It determines the dynamic feature information of the terminal obtained, and is the service selection of terminal according to the dynamic feature information of the terminal Network slice.

Specifically, NWDAF is the method for the service selection network slice of terminal in this step, it can be with reference to NSSF in S409 For the method that the service selection network of terminal is sliced, overlaps will not be repeated.Equally, NWDAF obtain dynamic feature information with The method of the mapping relations of network slice also may refer to the operation of NSSF, and NWDAF can quote the operating method of NSSF, principle Similar, overlaps will not be repeated.It is to be understood that the operation of NSSF selection network slice is replaced by NWDAF.

The identification information that S1513, NWDAF are sliced to the network that NSSF sends selection, NSSF receive the network that NWDAF is sent The identification information of slice.

The same S510 of S1514.

Similar, with method described in Figure 14, the function that network can also be sliced selection by NWDAF is open to third party Application server, that is, in conjunction with the process of Figure 15, dynamic feature information is sent to by NWDAF after receiving dynamic feature information Third-party application server, third-party application server to be sliced according to local policy selection network, and returns to NWDAF.

It is sliced selection method by the network that Figure 15 is provided, in the case where terminal has and reports NSSAI message, Neng Gougen It is service selection one suitable network slice of terminal according to the dynamic feature information of terminal, and the program does not depend on network Some static informations that side obtains select network to be sliced, but select network slice according to dynamic feature information, can with end The business at end changes and the change of adaptability, has flexibility, in addition, selection method is sliced by above-mentioned network, it can be for not The different network slice of same service selection can select respectively suitably when terminal accesses multiple business for multiple business Network slice improves network resource utilization in short, network performance required for business can be ensured, improves user to business Experience sense, enhance the commercial value of user.The program introduces NWDAF to realize the collection Macro or mass analysis of data, it is easier to soft The decoupling of part framework.

Same inventive concept based on above method embodiment, as shown in figure 16, the embodiment of the present application also provides one kind Network is sliced selection device 1600, which can be AMF, which can execute above method embodiment and provide AMF Performed operation.The device 1600 includes that transmission unit 1601 and receiving unit 1602 further include optionally processing unit 1603。

Wherein, transmission unit 1601, for sending slice selection request to network slice selection function NSSF.

Receiving unit 1602, for receiving the identification information that network is sliced from NSSF, wherein slice selection request is for asking The service selection network slice for terminal is sought, the dynamic feature information of carried terminal, dynamic feature information in slice selection request For selecting network to be sliced.Terminal have report NSSAI message in the case where, can according to the dynamic feature information of terminal, It is sliced for service selection one suitable network of terminal, and the program does not depend on some static informations that network side obtains and comes Network slice is selected, but network slice is selected according to dynamic feature information, can be changed and adaptability with the business of terminal Change, there is flexibility.It can be the different network of different service selections in addition, being sliced selection method by above-mentioned network Slice can select respectively suitable network to be sliced, in short, can ensure when terminal accesses multiple business for multiple business Network performance required for business improves network resource utilization, improves user to the experience sense of business, enhances the business of user Value.

Optionally, before sending slice selection request to NSSF, processing unit 1603 is for obtaining dynamic feature information.

Optionally, before sending slice selection request to NSSF, transmission unit 1601 is also used to network data analysis function Energy NWDAF sends inquiry request message, and inquiry request message includes the identification information of terminal, and inquiry request message is looked into for requesting Ask the information of network slice corresponding with terminal identification information；Receiving unit 1602, which is also used to receive inquiry request from NWDAF, to disappear The response message of breath, response message are used to indicate the result of inquiry as failure；Under this scene, can message according to response, Obtain dynamic feature information.The collection Macro or mass analysis of data is realized by introducing NWDAF, it is easier to the decoupling of software architecture.

Optionally, dynamic feature information comprises at least one of the following: signaling plane characteristic information, data surface characteristic information and meter Bothersome part.

Optionally, dynamic feature information comprises at least one of the following: handoff features, position feature and business information.

Optionally, dynamic feature information comprises at least one of the following: the movement velocity of terminal, the switching history of terminal letter Breath, the change in location frequency of terminal, the frequency of the session of terminal originating service, AMF initiate the frequency of paging request, the terminal The service quality QoS of the business negotiates frequency, the QoS negotiation result of the business of the terminal, the business of the terminal and is averaged Data packet length, the data packet interarrival times of the business of the terminal, the terminal the business charging policy；Wherein, Paging request is used for call terminal.It selects network to be sliced according to dynamic feature information, can change with the business of terminal and fit The change of answering property has flexibility, so that the network slice of selection can more adapt to the service feature of terminal.

Optionally, dynamic feature information is obtained by any one or more following method: terminal is obtained by itself Change in location frequency and/or AMF initiate the frequency of paging request；Alternatively, AMF obtains the movement velocity of terminal from access network equipment And/or the switching historical information of terminal；Alternatively, AMF from conversation management functional SMF obtain initiation business session frequency, should The QoS of the business of terminal negotiates at least one of the QoS negotiation result of the business of frequency and the terminal；Alternatively, AMF from Family face function UPF obtains the average data packet length of business and/or the data packet interarrival times of business；Alternatively, AMF is from plan The charging policy that slightly control function PCF obtains business.Give the specific method for obtaining dynamic feature information.

Optionally, processing unit 1603 can obtain the change in location frequency of terminal by the following method: receive terminal Location information determines the change in location frequency of terminal according to the location information of terminal.Existing 3GPP TS 23.502 can be used Process in standard obtains the location information of terminal, further obtains this dynamic feature information of the change in location frequency of terminal, Without introducing new signaling process.

Optionally, the frequency that AMF initiates paging request can be obtained by the following method: to terminal in statistics setting time The number for initiating paging request determines that AMF is initiated according to the number for initiating paging request in the setting time counted to terminal The frequency of paging request.

Optionally, the mode of location information that receiving unit 1602 receives terminal can have: in registration management process from Access network equipment receives the first N2 message, the location information of carried terminal in the first N2 message；And/or in se ce request procedure In from access network equipment receive the 2nd N2 message, the location information of carried terminal in the 2nd N2 message.Existing 3GPP can be used Process in 23.502 standard of TS obtains the location information of terminal, further obtains this dynamic of the change in location frequency of terminal Characteristic information, without introducing new signaling process.

Optionally, processing unit 1603 is also used to be recorded in the business contexts of terminal with dynamic feature information.

Same inventive concept based on above method embodiment, as shown in figure 17, the embodiment of the present application also provides one kind Network is sliced selection device 1700, which can be NSSF, which can execute above method embodiment offer Operation performed by NSSF.The device 1700 includes that transmission unit 1701 and receiving unit 1702 further include optionally that processing is single Member 1703.Wherein:

Receiving unit 1702, for receiving slice selection request from access and mobile management function to ps domain AMF；

Transmission unit 1701, for sending the identification information that the network is sliced to the AMF, slice selection request is for asking The service selection network slice for terminal is sought, the dynamic feature information of the terminal is carried in slice selection request, the dynamic is special Reference breath is for selecting the network to be sliced.

It can be the industry of terminal according to the dynamic feature information of terminal in the case where terminal has and reports NSSAI message The suitable network slice of business selection one, and the program does not depend on some static informations of network side acquisition to select network to cut Piece, but network slice is selected according to dynamic feature information, it can change and the change of adaptability with the business of terminal, there is spirit Activity.In addition, being sliced selection method by above-mentioned network, it can be sliced for the different network of different service selections, work as terminal When accessing multiple business, suitable network can be selected to be sliced for multiple business respectively, in short, can ensure required for business Network performance improves network resource utilization, improves user to the experience sense of business, enhances the commercial value of user.

Optionally, transmission unit 1701 is also used to, before the identification information that the network is sliced is sent to the AMF, also to the Tripartite's application server sends the dynamic feature information, and receives the mark letter that the network is sliced from the third-party application server Breath；Alternatively, sending the dynamic feature information to network data analysis function NWDAF, and receive what the network was sliced from the NWDAF Identification information.The collection Macro or mass analysis of data is realized by introducing NWDAF, it is easier to the decoupling of software architecture.It may be implemented Network slice selection function is open to third-party application.

Optionally, before the identification information that the network is sliced being sent to the AMF, processing unit 1703 is used for according to the slice Selection request, selects the network to be sliced.

Optionally, processing unit 1703 is used for dynamic feature information and dynamic feature information and net according to the terminal The mapping relations of network slice between the two, select the network to be sliced.

Optionally, processing unit 1703 is used to obtain the mapping relations according to following any mode: according to the network The dynamic feature information of slice and the terminal of network slice service, generates the mapping relations；It is managed alternatively, being sliced from sub-network Reason function NSSMF receives the mapping relations；Alternatively, receiving the mapping relations from operation management face equipment.Provide a variety of acquisitions The mode of mapping relations.

Optionally, which comprises at least one of the following: signaling plane characteristic information, data surface characteristic information and Charging event.

Optionally, which comprises at least one of the following: handoff features, position feature and business information.

Optionally, which comprises at least one of the following: the switching of the movement velocity, the terminal of the terminal is gone through History information, the change in location frequency of the terminal, the terminal initiate the frequency of the session of the business, the AMF initiates paging request Frequency, the business of the terminal service quality QoS negotiate frequency, the QoS negotiation result of the business of the terminal, the terminal The average data packet length of the business, the data packet interarrival times of the business of the terminal, the terminal the business meter Take strategy；Wherein, the paging request is for paging the terminal.Network is selected to be sliced according to dynamic feature information, it can be with end The business at end changes and the change of adaptability, has flexibility, so that the network slice of selection can more adapt to the business of terminal Feature.

Same inventive concept based on above method embodiment, as shown in figure 18, the embodiment of the present application also provides one kind Network is sliced selection device 1800, which can be NWDAF, which can execute above method embodiment offer Operation performed by NWDAF.The device 1800 includes receiving unit 1801 and processing unit 1802.It optionally, further include sending Unit 1803.

Receiving unit 1801, for receiving the dynamic feature information of terminal；

According to the dynamic feature information, it is sliced for the service selection network of the terminal.

Optionally, processing unit 1802, for being sliced according to the dynamic feature information and dynamic feature information and network Mapping relations between the two select the network to be sliced.

Optionally, processing unit 1802, for obtaining the mapping relations according to following any mode: according to the network The dynamic feature information of slice and the terminal of network slice service, generates the mapping relations；It is managed alternatively, being sliced from sub-network Reason function NSSMF receives the mapping relations；Alternatively, receiving the mapping relations from operation management face equipment.Provide a variety of acquisitions The mode of mapping relations.

Optionally, which comprises at least one of the following: the switching of the movement velocity, the terminal of the terminal is gone through History information, the change in location frequency of the terminal, the terminal initiate the frequency of the session of the business, the AMF initiates paging request Frequency, the business of the terminal service quality QoS negotiate frequency, the QoS negotiation result of the business of the terminal, the terminal The average data packet length of the business, the data packet interarrival times of the business of the terminal, the terminal the business Charging policy；Wherein, the paging request is for paging the terminal.Network is selected to be sliced according to dynamic feature information, Neng Gousui The business of terminal changes and the change of adaptability, has flexibility, so that the network slice of selection can more adapt to the industry of terminal Business feature.

Optionally, after the dynamic feature information for receiving terminal, transmission unit 1803 is used to send to third-party application should The dynamic feature information of terminal, receiving unit 1801 are also used to receive the mark letter of the network slice of third-party application return Breath.Wherein, which is the industry of the terminal according to the slice selection strategy being locally configured for the third-party application Business selection network slice may be implemented network slice selection function is open to third-party application.

Same inventive concept based on above method embodiment, as shown in figure 19, the embodiment of the present application also provides one kind Network is sliced selection device 1900, which can be access network equipment, which can execute above method embodiment Operation performed by access network equipment is provided.The device 1900 includes that receiving unit 1901 and processing unit 1902 are optionally gone back Including transmission unit 1903.Wherein:

Receiving unit 1901, for receiving notification message from access and mobile management function to ps domain AMF；

Processing unit 1902, for obtaining the dynamic feature information of terminal, the dynamic feature information according to the notification message For the service selection network slice for the terminal.

Transmission unit 1903, for sending the dynamic feature information of terminal to AMF.

The dynamic feature information that terminal is obtained by access network device, the dynamic feature information of terminal can be reported to AMF, and NSSF or NWDAF are further reported to by AMF, it, can be according to end in the case where terminal has and reports NSSAI message The dynamic feature information at end is service selection one suitable network slice of terminal, and the program does not depend on network side and obtains Some static informations for taking select network to be sliced, but select network slice according to dynamic feature information, can be with terminal Business changes and the change of adaptability, has flexibility.It can be different in addition, being sliced selection method by above-mentioned network The different network slice of service selection can select respectively suitable network when terminal accesses multiple business for multiple business Slice improves network resource utilization in short, network performance required for business can be ensured, improves user to the body of business Sense is tested, the commercial value of user is enhanced.

Optionally, processing unit 1902, for obtaining the movement velocity of the terminal and/or the switching history letter of the terminal Breath.Network relevant to the switching historical information of the movement velocity of terminal and/or the terminal can be selected to be sliced in this way.

Optionally, processing unit 1902, for obtaining according to following methods the movement velocity and/or the terminal of the terminal Switch historical information: switching request message based on the received, counts time that handover between cells occur within the set time for the terminal Number, occurs the number of handover between cells within the set time according to the terminal, obtains the movement velocity of the terminal；Based on the received Switching request message counts the every time interval that handover between cells occur twice of the terminal, small per occurring twice according to the terminal The time interval of section switching, obtains the switching historical information of the terminal.It can be using in existing 23.502 standard of 3GPP TS Process obtain the movement velocity and/or the switching historical information of the terminal this dynamic feature information of the terminal, without introducing New signaling process.

Same inventive concept based on above method embodiment, as shown in figure 20, the embodiment of the present application also provides one kind Network is sliced selection device 2000, which can be AMF, which can execute above method embodiment and provide AMF Performed operation.The device 2000 includes that receiving unit 2001 and processing unit 2002 further include optionally transmission unit 2003.Wherein:

Receiving unit 2001, for receiving notification message from access and mobile management function to ps domain AMF；

Processing unit 2002, for obtaining the dynamic feature information of terminal, the dynamic feature information according to the notification message For the service selection network slice for the terminal.

Transmission unit 2003, for sending the dynamic feature information of terminal to AMF.

The dynamic feature information that terminal is obtained by SMF, can be reported to AMF for the dynamic feature information of terminal, go forward side by side One step is reported to NSSF or NWDAF by AMF, can be according to the dynamic of terminal in the case where terminal has and reports NSSAI message Characteristic information is service selection one suitable network slice of terminal, and the program does not depend on some of network side acquisition Static information selects network to be sliced, but selects network slice according to dynamic feature information, can change with the business of terminal And the change of adaptability, there is flexibility.It can be different service selections in addition, being sliced selection method by above-mentioned network Different network slices can select respectively suitable network to be sliced, always when terminal accesses multiple business for multiple business It, can ensure network performance required for business, improve network resource utilization, improve user to the experience sense of business, increase The commercial value of strong user.

Optionally, processing unit 2002, for obtaining the frequency that the terminal initiates the session of the business according to the notification message Rate, the business service quality QoS negotiate frequency, in the QoS negotiation result of the business of the terminal at least one of.

Optionally, processing unit 2002, the frequency for initiating the session of the business for obtaining the terminal by the following method: Statistics receives protocol Data Unit session from access and mobile management function to ps domain AMF in se ce request procedure within the set time The number of context request is updated, which determines that the terminal initiates the frequency of the session of the business according to the number, alternatively, should SMF statistics receives the number of PDU session establishment context request in the setting time in session management process from the AMF, The SMF determines that the terminal initiates the frequency of the session of the business according to number.

Optionally, processing unit 2002, the service quality QoS for obtaining the business by the following method negotiate frequency: Subscription data is received from uniform data management UDM in PDU session establishment process, the description of QoS mass is carried in the subscription data, Negotiate frequency according to the service quality QoS that QoS mass describes to obtain the business；Alternatively, the SMF receives the terminal from the AMF QoS information negotiates frequency according to the service quality QoS that the QoS information obtains the business.

Optionally, processing unit 2002, for obtaining the QoS negotiation result of the business by the following method: in PDU session Subscription data is received from uniform data management UDM in Establishing process, the description of QoS mass is carried in the subscription data, according to QoS matter Amount description obtains the QoS negotiation result of the business；Alternatively, the SMF receives the QoS information of the terminal from the AMF, according to the QoS The QoS negotiation result of the acquisition of information business.

The service quality QoS that the business can be obtained using the process in existing 23.502 standard of 3GPP TS negotiates frequency With this dynamic feature information of the QoS negotiation result of the business, without introducing new signaling process.

Same inventive concept based on above method embodiment, as shown in figure 21, the embodiment of the present application also provides one kind Network is sliced selection device 2100, which can be access network equipment, which can execute above method embodiment Operation performed by access network equipment is provided.The device 2100 includes that receiving unit 2101 and processing unit 2102 are optionally gone back Including transmission unit 2103.Wherein:

Receiving unit 2101, for receiving notification message.

Processing unit 2102, for obtaining the dynamic feature information of terminal, the dynamic feature information according to the notification message For the service selection network slice for the terminal.

The dynamic feature information that terminal is obtained by UPF, can be reported to AMF for the dynamic feature information of terminal, go forward side by side One step is reported to NSSF or NWDAF by AMF, can be according to the dynamic of terminal in the case where terminal has and reports NSSAI message Characteristic information is service selection one suitable network slice of terminal, and the program does not depend on some of network side acquisition Static information selects network to be sliced, but selects network slice according to dynamic feature information, can change with the business of terminal And the change of adaptability, there is flexibility.It can be different service selections in addition, being sliced selection method by above-mentioned network Different network slices can select respectively suitable network to be sliced, always when terminal accesses multiple business for multiple business It, can ensure network performance required for business, improve network resource utilization, improve user to the experience sense of business, increase The commercial value of strong user.

Optionally, processing unit 2102, for obtaining the average data packet length of the business, being somebody's turn to do according to the notification message The data packet interarrival times of business.

Optionally, processing unit 2102, for obtaining the average data packet length of the business by the following method: from access Net equipment receives N3 message, according to the data packet of the business in the N3 message, count the business average data packet length and The data packet interarrival times of the business.

Optionally, processing unit 2102, for obtaining the data packet interarrival times of the business by the following method: from Access network equipment receives N3 message, according to the data packet of the business in the N3 message, when counting the data packet arrival of the business Between be spaced.

Optionally, processing unit 2102, for receiving notification message from conversation management functional SMF, which is come from In access and mobile management function to ps domain AMF.

Same inventive concept based on above method embodiment, as shown in figure 22, the embodiment of the present application also provides one kind Network is sliced selection device 2200, which can be access network equipment, which can execute above method embodiment Operation performed by access network equipment is provided.The device 2200 includes that receiving unit 2201 and processing unit 2202 are optionally gone back Including transmission unit 2203.Wherein:

Receiving unit 2201, for receiving notification message from access and mobile management function to ps domain AMF.

Processing unit 2202, for obtaining the dynamic feature information of terminal, the dynamic feature information according to the notification message For the service selection network slice for the terminal.

Transmission unit 2203, for sending the dynamic feature information of terminal to AMF.

The dynamic feature information that terminal is obtained by PCF, can be reported to AMF for the dynamic feature information of terminal, go forward side by side One step is reported to NSSF or NWDAF by AMF, can be according to the dynamic of terminal in the case where terminal has and reports NSSAI message Characteristic information is service selection one suitable network slice of terminal, and the program does not depend on some of network side acquisition Static information selects network to be sliced, but selects network slice according to dynamic feature information, can change with the business of terminal And the change of adaptability, there is flexibility.It can be different service selections in addition, being sliced selection method by above-mentioned network Different network slices can select respectively suitable network to be sliced, always when terminal accesses multiple business for multiple business It, can ensure network performance required for business, improve network resource utilization, improve user to the experience sense of business, increase The commercial value of strong user.

Optionally, processing unit 2202, for obtaining the charging policy of the business according to the notification message.

Optionally, processing unit 2202, for receiving strategy from conversation management functional SMF in PDU session establishment process Control obtains operation information, and the charging policy that the business is obtained in operation information is obtained from the policy control.It can use existing Process in 23.502 standard of 3GPP TS obtains this dynamic feature information of the charging policy of the business, without introducing new letter Enable process.

Based on the same inventive concept with above method embodiment, as shown in figure 23, the embodiment of the present application also provides one Kind of network is sliced selection device 2300, the communication device 2300 for realizing AMF in communication means provided by the above embodiment, The operation that NSSF, NWDAF, access network equipment, SMF, UPF or PCF are executed, for summary signal, above-mentioned each possible reality of network element The schematic diagram of body device is illustrated by quoting Figure 23, it is to be understood that Figure 23 is only schematic diagram, be can be applied to above-mentioned In a variety of different network elements.The communication device 2300 includes: transceiver 2301, processor 2302, memory 2303.Processor 2302 for calling batch processing, when program is performed, so that processor 2302 executes communication party provided by the above embodiment The operation that terminal executes in one of method.Memory 2303 is used for the program that storage processor 2302 executes.Above-mentioned Figure 16~Figure 22 In functional module transmission unit and receiving unit can be realized by processor 2302, processing unit can pass through processor 2302 realize.

Processor 2302 can be central processing unit (central processing unit, CPU), network processing unit The combination of (network processor, NP) or CPU and NP.

Processor 2302 can further include hardware chip.Above-mentioned hardware chip can be specific integrated circuit (application-specific integrated circuit, ASIC), programmable logic device (programmable Logic device, PLD) or combinations thereof.Above-mentioned PLD can be Complex Programmable Logic Devices (complex Programmable logic device, CPLD), field programmable gate array (field-programmable gate Array, FPGA), Universal Array Logic (generic array logic, GAL) or any combination thereof.

Memory 2303 may include volatile memory (volatile memory), such as random access memory (random-access memory, RAM)；Memory 2303 also may include nonvolatile memory (non-volatile ), such as flash memory (flash memory), hard disk (hard disk drive, HDD) or solid state hard disk memory (solid-state drive, SSD)；Memory 2303 can also include the combination of the memory of mentioned kind.

In the method that the above embodiments of the present application provide, in operations and functions performed by described network element or equipment Some or all of, it can be completed with chip or integrated circuit.

In order to realize that the function of device described in above-mentioned Figure 16~Figure 23, the embodiment of the present application also provide a kind of chip, wrap Processor is included, for supporting the device to realize function involved in method provided by the above embodiment.In a kind of possible design In, which connect with memory or the chip includes memory, which refers to for saving the necessary program of the device Order and data.

The embodiment of the present application provides a kind of computer storage medium, is stored with computer program, the computer program packet Include the instruction for executing method provided by the above embodiment.

The embodiment of the present application provides a kind of computer program product comprising instruction, when run on a computer, So that computer executes method provided by the above embodiment.

It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.

The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the application range.

Obviously, those skilled in the art can carry out various modification and variations without departing from this Shen to the embodiment of the present application Please embodiment spirit and scope.In this way, if these modifications and variations of the embodiment of the present application belong to the claim of this application And its within the scope of equivalent technologies, then the application is also intended to include these modifications and variations.

Claims

1. a kind of network is sliced selection method characterized by comprising

Access and mobile management function to ps domain AMF are sent to network slice selection function NSSF is sliced selection request, the slice choosing Request is selected for requesting the service selection network for terminal to be sliced, the dynamic that the terminal is carried in the slice selection request is special Reference breath, the dynamic feature information is for selecting the network to be sliced；

The AMF receives the identification information that the network is sliced from the NSSF.

2. the method as described in claim 1, which is characterized in that before the AMF sends slice selection request to the NSSF, Further include:

The AMF obtains the dynamic feature information.

3. method according to claim 2, which is characterized in that before the AMF sends slice selection request to the NSSF, Further include:

The AMF sends inquiry request message to network data analysis function NWDAF, and the inquiry request message includes the end The identification information at end, the inquiry request message are used to request to inquire the letter of network slice corresponding with the terminal identification information Breath；

The AMF receives the response message of the inquiry request message from the NWDAF, and the response message is used to indicate described The result of inquiry is failure；

The AMF obtains the dynamic feature information, comprising: the AMF obtains the behavioral characteristics according to the response message Information.

4. the method according to claim 1, which is characterized in that the dynamic feature information includes following at least one Kind: the movement velocity of the terminal, the switching historical information of the terminal, the change in location frequency of the terminal, the terminal Initiate the frequency of the session of the business, the AMF initiates the frequency of paging request, the service quality QoS of the business is negotiated The data packet arrival time of frequency, the QoS negotiation result of the business, the average data packet length of the business, the business It is spaced, the charging policy of the business；Wherein, the paging request is for paging the terminal.

5. method as claimed in claim 4, which is characterized in that the AMF obtains the dynamic feature information and includes:

The AMF obtains the change in location frequency of the terminal and/or the frequency of AMF initiation paging request；Alternatively,

The AMF obtains the movement velocity of the terminal and/or the switching historical information of the terminal from access network equipment；Or Person,

The AMF obtains the terminal from conversation management functional SMF and initiates described in the frequency of session of the business, the initiation The QoS of business negotiates at least one of frequency and the QoS negotiation result of the business；Alternatively,

The AMF from user plane functions UPF obtain the business average data packet length and/or the business data packet to Up to time interval；Alternatively,

The AMF obtains the charging policy of the business from policy control functions PCF.

6. method as claimed in claim 5, which is characterized in that the AMF obtains the change in location frequency of the terminal, packet It includes:

The AMF receives the location information of the terminal, determines that the position of the terminal becomes according to the location information of the terminal Change frequency.

7. method as claimed in claim 5, which is characterized in that the AMF obtains the frequency that the AMF initiates paging request, Include:

The number for initiating paging request in the AMF statistics setting time to the terminal, according in the setting time counted The number that paging request is initiated to the terminal determines that the AMF initiates the frequency of paging request.

8. method according to claim 6 or 7, which is characterized in that the AMF receives the location information of the terminal, comprising:

The AMF receives the first N2 message from access network equipment in registration management process, carries institute in the first N2 message State the location information of terminal；Or,

The AMF receives the 2nd N2 message from access network equipment in se ce request procedure, carries institute in the 2nd N2 message State the location information of terminal.

9. a kind of network is sliced selection method characterized by comprising

Network is sliced selection function NSSF and receives slice selection request, the slice choosing from access and mobile management function to ps domain AMF Request is selected for requesting the service selection network for terminal to be sliced, the dynamic that the terminal is carried in the slice selection request is special Reference breath, the dynamic feature information is for selecting the network to be sliced；

The NSSF sends the identification information that the network is sliced to the AMF.

10. method as claimed in claim 9, which is characterized in that the NSSF sends the mark that the network is sliced to the AMF Before knowledge information, further includes:

The NSSF sends the dynamic feature information to third-party application server, and connects from the third-party application server Receive the identification information of the network slice；Alternatively,

The NSSF sends the dynamic feature information to network data analysis function NWDAF, and from described in NWDAF reception The identification information of network slice.

11. method as claimed in claim 10, which is characterized in that the NSSF sends what the network was sliced to the AMF Before identification information, further includes:

The NSSF selects to request according to the slice, and the network is selected to be sliced.

12. method as claimed in claim 11, which is characterized in that the NSSF selects to request according to the slice, selects institute State network slice, comprising:

The NSSF is sliced reflecting between the two according to the dynamic feature information of the terminal and dynamic feature information and network Relationship is penetrated, the network is selected to be sliced.

13. method as claimed in claim 12, which is characterized in that further include:

The NSSF is sliced according to the network and the dynamic feature information of the terminal of network slice service, described in generation Mapping relations；Alternatively,

The NSSF receives the mapping relations from sub-network slice management function NSSMF；Alternatively,

The NSSF receives the mapping relations from operation management face equipment.

14. a kind of network is sliced selection method characterized by comprising

The dynamic feature information of network data analysis function NWDAF reception terminal；

The NWDAF is that the service selection network of the terminal is sliced according to the dynamic feature information.

15. method as claimed in claim 14, which is characterized in that the NWDAF is described according to the dynamic feature information The service selection network of terminal is sliced, comprising:

The NWDAF is sliced mapping between the two according to the dynamic feature information and dynamic feature information and network and closes System selects the network to be sliced.

16. method as claimed in claim 15, which is characterized in that further include:

17. a kind of network is sliced selection device characterized by comprising

Processor calls the program in the memory, executes described program to realize that right such as is wanted for coupling with memory Seek method described in 1-8 any one.

18. device as claimed in claim 17, which is characterized in that further include:

The memory, the program called for storing the processor.

19. a kind of network is sliced selection device characterized by comprising

Processor calls the program in the memory, executes described program to realize that right such as is wanted for coupling with memory Seek method described in 9-13 any one.

20. a kind of network is sliced selection device characterized by comprising

Processor calls the program in the memory, executes described program to realize that right such as is wanted for coupling with memory Seek method described in 14-16 any one.