CN106549806B - A kind of network slice manager and its management method - Google Patents
A kind of network slice manager and its management method Download PDFInfo
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- CN106549806B CN106549806B CN201610949216.1A CN201610949216A CN106549806B CN 106549806 B CN106549806 B CN 106549806B CN 201610949216 A CN201610949216 A CN 201610949216A CN 106549806 B CN106549806 B CN 106549806B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/78—Architectures of resource allocation
Abstract
The present invention proposes that a kind of network is sliced manager and its management method, belongs to field of communication technology, which includes creation module, dilatation module, removing module, user's required list, network slicing parameter table and network slice state table and multiple external interfaces；Wherein, creation module is connected with user's required list, network slicing parameter table respectively；Dilatation, removing module are connected with network slicing parameter table, network slice state table respectively；Creation module is connect by external interface with core net, access net, physical resource pool and user, and dilatation module is sliced by external interface with existing network and physical resource pool is connected, and removing module is connected by external interface with existing network slice；The management method of the manager includes three creation of network slice, dilatation and deletion parts；The present invention according to user demand, can be created that the network slice of meet demand, effectively maximize the utilization rate of network slice, to improve network resource utilization.
Description
Technical field
The invention belongs to field of communication technology, in particular to a kind of network slice manager and its management method.
Background technique
In following the internet of things era, the connection between person to person, people and object, object and object will appear various rich and varied
Communication requirement.Future network application scenarios are many kinds of, different application scene to speed, capacity, coverage rate and safety etc. all
There is different requirements.If a specific network is all established for every kind of business, although can be very good to meet various scenes
Demand, but cost is too high is difficult to realize；If all different business demands are all carried in identical consolidated network,
It can lead to the decline of business experience because of the larger difference of business demand.5G network should construct in a more flexible way, and transport
Battalion quotient then can be adjusted flexibly and combine to network performance indexes such as speed, capacity, coverage rate and safeties, to meet
The individual demand of different application.Therefore, NGMN (Next Generation Mobile Networks) proposes network slice
Technological concept, 3GPP (3rd Generation Partnership Project) also close network slice as next generation network
One of key technology.
Network, which is sliced (Network Slice, NS), to be made of one group of network function (Network Function, NF)
A series of complete instantiation logical network, it is intended to provide network services needed for it for user.In same physical infrastructure
On, (Network is virtualized using software defined network (Software Defined Network, SDN) and network function
Function Virtualization, NFV) etc. technologies, for different application scenarios create on demand setting network be sliced,
Reach the optimization of network resource usage.
Network microtomy is intended to higher using the resource allocation of optimization as one of next generation network key technology
Effect ground solution line business (such as to the higher HD video business of bandwidth requirement, game service more demanding to time delay etc.
Deng).For future network, network slice will be there are many type, and wherein most basic type then corresponds to three under 5G network
The enhanced mobile broadband type slice of big application scenarios, superelevation are reliably cut with low latency type slice and large-scale machines class communication type
Piece.
Network slice as the network function that is adapted with application scenarios and with physical resource structure corresponding to the network function
At.Network function is present in access net and core net, and some of them network function can be only present in access net or core net, and
Some network functions both can reside in access net and can also exist in core net.Different network functions needs corresponding object
Resource is managed to support, and physical resource is present in physical resource pool.In addition, between network slice, there is likely to be topologys to close
System, there are the shared of physical resource can be carried out between the slice of topological relation.The manager to network slice proposed at present
Method is mainly described network slice from technological layer, there is no setting out based entirely on the demand of user, can not reach money
The optimization that source utilizes.
Summary of the invention
The purpose of the invention is to overcome the shortcoming of prior art, propose that a kind of network is sliced manager and its pipe
Reason method, the present invention can make corresponding adjustment according to the variation of user demand in real time, reach utilization of resources optimization, realization pair
The perfect management of network slice.
A kind of network manager proposed by the present invention, which is characterized in that including creation module, dilatation module, removing module,
User's required list, network slicing parameter table and network slice state table and multiple external interfaces；Wherein, creation module is distinguished
It is connected with user's required list, network slicing parameter table；Dilatation module is sliced state table phase with network slicing parameter table, network respectively
Even；Removing module is connected with network slicing parameter table, network slice state table respectively；Creation module passes through external interface and core
Net, access net, physical resource pool are connected with user, and dilatation module is sliced by external interface and already present network and physics provides
Source Chi Xianglian, removing module are connected by external interface with already present network slice.
The creation module is used for the creation of network slice；Creation module receives the network slice application request that user sends
Afterwards, the application information to the type of service being sliced including user's log on and including the application time be collected and store to
In the required list of family, the application information is updated according to the timing of setting period by creation module；Creation module is received according to previous cycle
The application information of collection analyzes the parameters of the slice of network needed for user, mainly including in network slice type, network slice
The creation time of the network function, network slice that include, the user capacity of the prediction duration of network slice and network slice
And store these parameters into network slicing parameter table, it using core net or is accessed corresponding in net according to network slicing parameter
Corresponding physical resource creation network slice in network function and physical resource pool, or be sliced and create to user feedback network
The information of failure；Wherein, the network function that network slice type and the network slice of same type of service include uniquely determines；
Creation time is created module according to the application time of this and last time network slice and updates, and creates such network as next time
The creation time of slice.
The dilatation module is used for the dilatation of network slice；Dilatation module obtains the congestion of each existing network slice in real time
State, the topological relation of the active user connection amount of network slice and each existing network slice and by these status informations
It stores into network slice state table；Dilatation module when detecting that congestion occurs for a certain existing network slice, will from this
Network slice is adapted to the physics of network slice there are obtaining in other networks of topological relation slice or physical resource pool
Resource carries out dilatation to the network slice that congestion occurs；Meanwhile the type network slice of congestion can will occur for dilatation module
User capacity promotes 5%~15%, meets the business demand of user, and the user capacity after promotion is as creation next time same type
The user capacity of network slice.
The removing module is used for the deletion of network slice；After network slice creation, when the duration of network slice
Reach after the 75%~85% of prediction duration and in 5% period of continuous prediction duration network slice use
Family connection amount is zero, and removing module then deletes network slice, discharges its internal physical resource and deletes network slice
Corresponding status information；Removing module is sliced the type network according to the current actual duration for being deleted network slice
The prediction duration is updated, convenient for using when creation next time same type network piece slice.
The management method of the network slice manager, which is characterized in that creation, dilatation and deletion including network slice
Three parts；The network that creation module collects user is sliced solicited message, and the creation for network slice is prepared, and creation module is logical
It crosses after user request information analyzes and need the network slice type that creates and its parameter, is created that network is sliced；When dilatation mould
When block detects that congestion occurs for network slice, then dilatation can be carried out to it, that is, promote the user capacity of network slice；Work as satisfaction
The time requirement of setting accesses already present network slice without user, and removing module then deletes the network and is sliced and discharges it
Internal physical resource.
The creation method of the network slice, specifically includes the following steps:
(1.1) user sends log on slice request to the creation module of network slice manager according to business demand；
It (1.2) will include network slice request after the log on slice that creation module receives user's transmission is requested
Type of service and the application information including the application time are collected and stored in user's required list；Creation module is according to the setting period
The information in user's required list is automatically updated, and was applied according to user of the user's application information of storage of the upper period to this period
Information is predicted；
(1.3) creation module classifies to user's application of different service types, analyzes creation different service types
Network function required for network is sliced；Creation module also counts the distribution situation of different service types application time, root respectively
Continue according to the different service types application time densely distributed period come the creation time for determining each network slice and prediction
Time T applies number as user capacity using user in maximum single hour；Creation module cuts network corresponding with type of service
The creation time of the network function, network slice that include in sheet type, network slice, the prediction duration of network slice and net
The user capacity of network slice is stored in network slicing parameter table；
(1.4) according to the parameter in network slicing parameter table, creation module is searched whether there is in core net and access net
Corresponding network function judges whether the resource in physical resource pool is sufficient according to user capacity: if there is corresponding network function
Can be with sufficient physical resource, then creation module is according to the parameter creation network slice in network slicing parameter table；If do not deposited
Then create failure in corresponding network function or physical resource deficiency, after creation failure creation module to user feedback failure information,
User is enabled to abandon the request of the business；
(1.5) creation module is received again by corresponding with the network slice type being already recorded in network slicing parameter table
When user requests, densely distributed period its application time is counted again, analyzes new creation time, and be sliced with network
Original creation time is averaged the wound to update creation time, as creation same type network slice next time in parameter list
Build the time.
The expansion method of the network slice, specifically includes the following steps:
(2.1) dilatation module obtains the status information of all existing network slices in real time, and the status information is stored in
Network is sliced in state table；When detecting that congestion occurs for network slice, dilatation module, which is obtained, has topology with network slice
User's connection amount of other networks slice of relationship, is sliced if there is other abundant networks of resource, is then sliced the network
Physical resource share to occur congestion network slice；If there is no the network slice that resource is abundant, then enter step
(2.2)；
(2.2) dilatation module obtains the physical resource for being adapted to the network and being sliced from physical resource pool, is sliced to the network
Dilatation；If respective resources are insufficient in physical resource pool, dilatation failure；After dilatation failure, dilatation module can prevent user from connecing
Enter onto the network slice of the congestion, when user's connection amount of network slice is lower than the 70%~80% of user capacity
User is allowed to access；
(2.3) Yi Dan detect some network slice occur a congestion when, no matter dilatation success or not, dilatation module is all
The user capacity that the type network in network slicing parameter table can be sliced promotes 5%~15%, creates same type as next time
The user capacity of network slice.
The delet method of the network slice, specifically includes the following steps:
(3.1) after network chip durations t1 reaches the 75%~85% of prediction duration T, if continuous time t2
Interior removing module detects that user's connection amount of the type network slice in network slice state table is always zero, then removing module
It deletes the network to be sliced and discharge its internal physical resource, while it is corresponding to delete network slice in network slice state table
All information；The continuous time t2 is predict duration T 5%；
(3.2) removing module records each network and is sliced each actual duration T1, if the actual duration
T1 is differed with prediction duration T is no more than the 5% of prediction duration T, then next network slice still maintains former prediction
Duration T；If actual duration T 1 differs by more than the 5% of prediction duration T with prediction duration T, into
Enter step (3.3)；
(3.3) removing module calculates the average value T2 of prediction duration T and actual duration T 1, and by network
The former prediction duration that the network is sliced in slicing parameter table is revised as average value T2, as creation the type net next time
The prediction duration of network slice.
The features of the present invention and the utility model has the advantages that
The present invention is added to record customer service application and utilizes application information analysis wound in network slice visioning procedure
Establishing network is sliced the step of relevant parameter.This method according to user demand, can be created that the network slice of meet demand, effectively
The utilization rate that network is sliced by ground maximizes, to improve network resource utilization.After the completion of network is sliced and creates, network is cut
Dynamically according to user, connection amount is sliced progress dilatation operation to network to piece manager in real time, enhances flexibility, can be effective
Certain emergency event is coped with, meets the needs of more users.In the stage of deletion, adjustment network chip durations function is increased
Can, it can be according to the duration of practical connection dynamic adjustment network slice, the connection need as much as possible for meeting user
While asking, completes the deletion of network slice and discharge resource.
Detailed description of the invention
Attached drawing herein is only used to provide further understanding of the present invention, and is constituted part of this application.Of the invention
Illustrative embodiments and their description for explaining only the invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram that network is sliced manager.
Fig. 2 is that network is sliced network integrated stand composition.
Fig. 3 is that network is sliced state transition diagram.
Fig. 4 is that network is sliced visioning procedure figure.
Fig. 5 is that network is sliced dilatation flow chart.
Fig. 6 is that network slice deletes flow chart.
Specific embodiment
In order to make technical solution of the present invention and functional structure easily facilitate understanding, pass through each section function below in conjunction with attached drawing
The present invention is described in detail for energy.Concrete function embodiment described herein only to explain the present invention, is not used to limit
The present invention.
The structure of network slice manager proposed by the present invention a kind of as shown in Figure 1, include creation module, dilatation module,
Removing module, user's required list, network slicing parameter table and network slice state table and multiple external interfaces；Wherein, it creates
Module is connected with user's required list, network slicing parameter table respectively；Dilatation module is sliced with network slicing parameter table, network respectively
State table is connected；Removing module is connected with network slicing parameter table, network slice state table respectively.
Using the overall architecture of the network slice network of the above-mentioned manager of the present invention, as shown in Fig. 2, including in whole network
Core net, access net, physical resource pool, network slice manager, network slice and user.Wherein, in core net and access net
Store multiple network function NF, NF1, NF2 as shown in Figure 2 ..., NF8；Network is sliced the creation module in manager
It is connect by external interface with core net, access net, physical resource pool and user；It is logical that network is sliced the dilatation module in manager
Cross that external interface is sliced with already present network and physical resource pool is connected；Network is sliced the removing module in manager outside
Portion's interface is connected with already present network slice.
The creation module of the manager is used for the creation of network slice；Creation module receives user and sends network slice
After application request, the application information to the type of service being sliced including user's log on and including the application time is collected simultaneously
It is stored in user's required list, the application information is updated according to the period timing of setting by creation module, the activity tool of user
There is certain periodicity, the present embodiment is with 24 hours as a cycle；The application that creation module is collected according to previous cycle
Information analysis goes out the parameters of the slice of network needed for user, the main net including including in network slice type, network slice
Network function, the creation time of network slice, the user capacity of the prediction duration of network slice and network slice, according to network
Slicing parameter is created using corresponding physical resource in corresponding network function in core net or access net and physical resource pool
Network slice, or the information that creation fails is sliced to user feedback network；Wherein, the network slice type of same type of service
And the network function that network slice includes uniquely determines；The application time that creation time is sliced according to this with the last time network
It is created module update, the creation time of such network slice is created as next time.
The dilatation module of the manager is used for the dilatation of network slice；Dilatation module obtains each existing network in real time and cuts
The topological relation of the congestion state of piece, actual user's connection amount of network slice and each existing network slice；Dilatation mould
Block, will be from there are other networks of topological relation with the network slice when detecting that congestion occurs for a certain existing network slice
The physical resource for being adapted to network slice is obtained in slice or physical resource pool, and the network slice that congestion occurs is expanded
Hold；Meanwhile the user capacity for the type network slice that congestion occurs can be promoted 5%~15% (specific value by dilatation module
Can be set according to practical Congestion Level SPCC), meet the business demand of user, the user capacity after promotion is as creation next time phase
The user capacity of same type network slice.
The removing module of the manager is used for the deletion of network slice；After network slice creation, when network slice
Duration reach the prediction duration 75%~85% (specific value can be set according to practical connection amount size at that time
It is fixed) user's connection amount of network slice is zero afterwards and in 5% period of continuous prediction duration, and removing module is then
Network slice is deleted, its internal physical resource is discharged and deletes the network and is sliced corresponding status information；Removing module root
The prediction duration that the type network is sliced is updated according to the current actual duration for being deleted network slice, is convenient for
It is used when creation next time same type network piece slice.
User's required list of the manager is as shown in table 1, and user's log on for storing creation module collection is cut
Piece solicited message, including type of service and application time two arrange；Wherein, type of service refers to such as HD video, game service
Business, these types of service are indicated by 7 bit binary numbers in table 1, can at most represent 128 kinds of different types of service,
As 0000000 indicates that HD video business, 0000001 indicate game service in table 1；Application time is stored by 10 integers, such as
Shown in table 1,0910082034 is indicated 8 points of September 10 days 20 minutes and 34 seconds；User's required list will record user's letter of application in 24 hours
Breath, the present embodiment store up to 20000 (user's application information item number upper limit of storage can be set according to actual needs)
User's application information, the every 24 hours all information deleted in table 1, and table 1 is updated by creation module.
Table 1
| Type of service | Application time |
| 0000000 | 0910082034 |
| 0000001 | 0910093023 |
| …… | …… |
The network slicing parameter table of the manager is as shown in table 2, which is used to store all types of network slices
Parameters, including network slice type, network slice in include network function, network slice creation time, network
The user capacity of the prediction duration of slice and network slice；Wherein, network slice type is opposite with the type of service in table 1
It answers, is indicated with same 7bit；Network function NF is present in core net and access net, with the different network of 2 integer representation
03 indicates that the network function of high bandwidth, 02 indicate the network function of low time delay in function, such as the network function of table 2；When creation
Between indicated 8 points of September 11 days 0 minute and 10 seconds equally by 10 integer representations, 0911080010；Predict that the unit of duration is small
When；The unit of user capacity is a.For creating network slice, the creation time of network slice and prediction duration for the first time
It is determined by creation module according to densely distributed period application time in table 1, the user capacity of network slice is by creating
Module applies for that number determines according to the user in maximum single hour.For the non-same type network slice created for the first time, the network
Corresponding network function is sliced to uniquely determine and will not change, and creation time is according to the application of this and last time network slice
Time is created the actual duration that module updates, the prediction duration is sliced according to this network and the last time network is cut
Prediction duration of piece is deleted module and updates, the user capacity of congested network slice occurred before by dilatation module more
Newly, it is used when being sliced convenient for creation next time same type network piece.
Table 2
| Network slice type | Network function | Creation time | Predict the duration | User capacity |
| 0000000 | 03,05 | 0911080010 | 4 | 400 |
| 0000001 | 02,07 | 0911090023 | 6 | 200 |
| …… | …… | …… | …… | …… |
The network slice state table of the manager is as shown in table 3, which is used to store the state letter of existing network slice
Breath, the topological relation being sliced including network slice number, congestion state, network slice with other networks and user's connection amount
Four column；Due to can only have one in the network slice of synchronization, same type, so net in network slice number and table 2
Network slice type is corresponding, is indicated with same 7bit；When the user for accessing network slice is excessive, network slice service user
During will appear the case where packet loss or time delay increase, i.e. generation congestion indicates to occur congestion with " 1 " in table 3, " 0 " then table
Show and congestion does not occur；The network that " 0000001 " indicates that network slice is 0000001 with network slice number in topological relation is cut
There are topological relation, " 0000000 " indicates that the network slice that network slice is 0000000 with network slice number exists and opens up piece
Relationship is flutterred, "-" indicates that there are the network of topological relation slices with network slice；User's connection amount then indicates currently to connect
It is connected to the number of users of network slice.
Table 3
| Network slice number | Congestion state | Topological relation | User's connection amount |
| 0000000 | 0 | 0000001 | 20 |
| 0000001 | 1 | 0000000 | 200 |
| 0000010 | 0 | — | 0 |
| …… | …… | …… | …… |
The management method of above-mentioned network slice manager proposed by the present invention includes creation, dilatation and the deletion of network slice
Three parts, Fig. 3 are sliced the transfer figure of state for network, and there is no networks to be sliced for 0 representative, and there are network slices for 1 representative.The shape
All processes involved in inventive network slice manager administration method are covered in state transfer figure: before creation network slice
Solicited message is sliced by the network that creation module collects user, the creation for network slice is prepared, and creation module passes through user
Solicited message analyzes the network slice type for needing to create and its parameter (is sliced included network function, wound including network
Build time and prediction duration etc.) after, it is created that network is sliced, into state 1；Network slice there are during, work as expansion
When molar block detects that congestion occurs for network slice, then dilatation operation can be carried out to it, that is, the user for promoting network slice holds
Amount；When the time requirement for meeting setting, when connecting network slice without user, removing module then deletes network slice simultaneously
Its internal physical resource is discharged, state 0 is returned.
Detailed description are as follows for specific steps below with reference to flow chart to management method of the present invention:
The creation method of network slice, process as shown in figure 4, specifically includes the following steps:
(1.1) user sends log on slice request to the creation module of network slice manager according to business demand；
It (1.2) will include network slice request after the log on slice that creation module receives user's transmission is requested
Type of service and the application information including the application time are collected and stored in user's required list；In the present embodiment, user's request
Table first records user's application information in 24 hours, all information in every 24 hours deletion tables of creation module, and under start recording
One 24 hours user's application information, user's application information that creation module was collected according to the past 24 hours one day will be to future one
It user's application information is predicted；
(1.3) creation module classifies to user's application of different service types, analyzes creation different service types
Network function required for network is sliced；Creation module counts the distribution situation of different service types application time respectively, according to
When densely distributed period different service types application time determines that the creation time of each network slice and prediction continue
Between T, apply number as user capacity using user in maximum single hour；Creation module will network slice corresponding with type of service
The creation time of the network function, network slice that include in type, network slice, the prediction duration of network slice and network
The user capacity of slice is stored in network slicing parameter table；
(1.4) according to the parameter in step (1.3) network slicing parameter table, creation module is searched in core net and access net
With the presence or absence of corresponding network function, judge whether the resource in physical resource pool is sufficient according to user capacity: if there is phase
Network function and sufficient physical resource are answered, then creation module is created according to the parameter in step (1.3) network slicing parameter table
Network slice；Then create failure if there is no corresponding network function or physical resource deficiency, after creation failure creation module to
User feedback failure information enables user abandon the request of the business；
(1.5) creation module is received again by corresponding with the network slice type being already recorded in network slicing parameter table
When user requests, densely distributed period its application time is counted again, analyzes new creation time, and be sliced with network
Original creation time is averaged the wound to update creation time, as creation same type network slice next time in parameter list
Build the time.
The expansion method of network slice, process as shown in figure 5, specifically includes the following steps:
(2.1) dilatation module obtains status information (including the network slice number, congestion of all existing networks slices in real time
State, topological relation and user's connection amount etc. with other networks slice), and it is sliced that the status information is stored in network
In state table；When detect network slice occur congestion when, dilatation module obtain with the network slice there are topological relation other
User's connection amount of network slice, if there is abundant other networks slice of resource, (such as the user of network slice is connected
Amount is lower than the 20% of its user capacity, and specific value can be set according to the actual situation), then the physics being sliced the network provides
Source shares to the network slice that congestion occurs；If there is no the network slice that resource is abundant, then (2.2) are entered step；
(2.2) dilatation module obtains the physical resource for being adapted to the network and being sliced from physical resource pool, is sliced to the network
Dilatation；If respective resources are insufficient in physical resource pool, dilatation failure；After dilatation failure, dilatation module can prevent user from connecing
Enter onto the network slice of the congestion, until 70%~80% of user's connection amount of network slice lower than user capacity (has
Body numerical value can be set according to real network congestion situation) when just allow user access；
(2.3) Yi Dan detect some network slice occur a congestion when, no matter dilatation success or not, dilatation module is all
The user capacity that the type network in network slicing parameter table can be sliced promotes 5%~15%, creates same type as next time
The user capacity of network slice.
The delet method of network slice, process as shown in fig. 6, specifically includes the following steps:
(3.1) after network chip durations t1 reaches the 75%~85% of prediction duration T, if continuous time t2
(the 5% of the prediction duration) interior removing module detects user's connection amount of the type network slice in network slice state table
It is always zero, then removing module deletes the network and is sliced and discharges its internal physical resource, while deleting network slice state
The network is sliced corresponding all information in table；
(3.2) removing module records each network and is sliced each actual duration T1 (i.e. network slice is from initial
Be created to it is final delete institute after duration), if actual duration T 1 is differed with prediction duration T no more than predicting
The 5% of duration T, then next network slice still maintains former prediction duration T；If actual duration T with
Prediction duration T differs by more than the 5% of prediction duration T, then enters step (3.3)；
(3.3) removing module calculates the average value T2 of prediction duration T and actual duration T 1, and by network
The former prediction duration that the network is sliced in slicing parameter table is revised as average value T2, as creation the type net next time
The prediction duration of network slice.
Above step can be realized by common programmed method.
Claims (7)
1. a kind of network is sliced manager, which is characterized in that including creation module, dilatation module, removing module, user's request
Table, network slicing parameter table and network slice state table and multiple external interfaces；Wherein, creation module is asked with user respectively
Table, network slicing parameter table is asked to be connected；Dilatation module is connected with network slicing parameter table, network slice state table respectively；It deletes
Module is connected with network slicing parameter table, network slice state table respectively；Creation module passes through external interface and core net, access
Net, physical resource pool are connected with user, and dilatation module is sliced by external interface with already present network and physical resource pool phase
Even, removing module is connected by external interface with already present network slice；
The creation module is used for the creation of network slice；After creation module receives the network slice application request that user sends,
Application information to the type of service being sliced including user's log on and including the application time is collected and stores to user
In required list, the application information is updated according to the timing of setting period by creation module；Creation module is collected according to previous cycle
Application information analyze network needed for user slice parameters, mainly include network slice type, network slice in wrap
The user capacity of the creation time of the network function, network slice that contain, the prediction duration of network slice and network slice is simultaneously
These parameters are stored into network slicing parameter table, corresponding net in core net or access net is utilized according to network slicing parameter
Corresponding physical resource creation network slice in network function and physical resource pool, or be sliced creation to user feedback network and lose
The information lost；Wherein, the network function that network slice type and the network slice of same type of service include uniquely determines；Wound
Building the time is created module according to application time of this and the last time network slice and updates, and cuts as such network is created next time
The creation time of piece.
2. network as described in claim 1 is sliced manager, which is characterized in that the dilatation module is used for the expansion of network slice
Hold；Dilatation module obtain in real time the congestion state of each existing network slice, network slice active user connection amount and
The topological relation of each existing network slice simultaneously stores these status informations into network slice state table；Dilatation module is once
When detecting that congestion occurs for a certain existing network slice, by from network slice there are other networks of topological relation slice or
The physical resource for being adapted to network slice is obtained in person's physical resource pool, and dilatation is carried out to the network slice that congestion occurs；Together
When, the user capacity for the type network slice that congestion occurs can be promoted 5%~15% by dilatation module, meet the business of user
Demand, user capacity of the user capacity as creation next time same type network slice after promotion.
3. network as claimed in claim 2 is sliced manager, which is characterized in that the removing module is deleted for network slice
It removes；It is after the duration of network slice reaching the 75%~85% of prediction duration and continuous after network slice creation
The user's connection amount for predicting network slice in 5% period of duration is zero, and removing module is then deleted the network and cut
Piece discharges its internal physical resource and deletes the corresponding status information of network slice；Removing module is deleted according to current
The actual duration of network slice is updated the prediction duration that the type network is sliced, similar convenient for creation next time
Type network piece uses when being sliced.
4. a kind of management method of network slice manager as described in claim 1, which is characterized in that the wound including network slice
It builds, three parts of dilatation and deletion；The network slice manager includes creation module, dilatation module and removing module；Creation
The network of module collection user is sliced solicited message, and the creation for network slice is prepared, and creation module requests to believe by user
After breath analyzes the network slice type for needing to create and its parameter, it is created that network is sliced；When dilatation module detects network
When congestion occurs for slice, then dilatation can be carried out to it, that is, promote the user capacity of network slice；It is wanted when the time for meeting setting
It asks and accesses already present network slice without user, removing module then deletes the network and is sliced and discharges its internal physics money
Source.
5. the management method of network slice manager as claimed in claim 4, which is characterized in that the creation side of the network slice
Method, specifically includes the following steps:
(1.1) user sends log on slice request to the creation module of network slice manager according to business demand；
It (1.2) will include the business of network slice request after the log on slice that creation module receives user's transmission is requested
Type and the application information including the application time are collected and stored in user's required list；Creation module is automatic according to the setting period
The information in user's required list was updated, and according to user's application information of storage of the upper period to user's application information in this period
It is predicted；
(1.3) creation module classifies to user's application of different service types, analyzes creation different service types network
Network function required for being sliced；Creation module also counts the distribution situation of different service types application time respectively, according to not
To determine the creation time of each network slice and the duration is predicted with the type of service application time densely distributed period
T applies number as user capacity using user in maximum single hour；Network corresponding with type of service is sliced class by creation module
The creation time of the network function, network slice that include in type, network slice, the prediction duration of network slice and network are cut
The user capacity of piece is stored in network slicing parameter table；
(1.4) according to the parameter in network slicing parameter table, creation module is searched in core net and access net with the presence or absence of corresponding
Network function, judge whether the resource in physical resource pool sufficient according to user capacity: if there is corresponding network function and
Sufficient physical resource, then creation module is according to the parameter creation network slice in network slicing parameter table；If there is no phase
Network function or physical resource deficiency is answered then to create failure, creation module is enabled and being used to user feedback failure information after creation failure
Abandon the request of the business in family；
(1.5) creation module is received again by user corresponding with the network slice type being already recorded in network slicing parameter table
When request, count densely distributed period its application time again, analyze new creation time, and with network slicing parameter
Original creation time is averaged to update creation time in table, when as the creation of creation same type network slice next time
Between.
6. the management method of network slice manager as claimed in claim 4, which is characterized in that the dilatation side of the network slice
Method, specifically includes the following steps:
(2.1) dilatation module obtains the status information of all existing network slices in real time, and the status information is stored in network
It is sliced in state table；When detecting that congestion occurs for network slice, there are topological relations with network slice for the acquisition of dilatation module
Other networks slice user's connection amount, be sliced if there is other abundant networks of resource, then the object being sliced the network
Resource-sharing is managed to the network slice that congestion occurs；If there is no the network slice that resource is abundant, then (2.2) are entered step；
(2.2) dilatation module obtains the physical resource for being adapted to the network and being sliced from physical resource pool, is sliced dilatation to the network；
If respective resources are insufficient in physical resource pool, dilatation failure；After dilatation failure, dilatation module can prevent user from being linked into this
On the network slice of congestion, just allow to use when user's connection amount of network slice is lower than the 70%~80% of user capacity
Family access；
(2.3) Yi Dan detect some network slice occur a congestion when, no matter dilatation success or not, dilatation module all can will
The user capacity that the type network is sliced in network slicing parameter table promotes 5%~15%, creates same type network as next time
The user capacity of slice.
7. the management method of network slice manager as claimed in claim 4, which is characterized in that the deletion side of the network slice
Method, specifically includes the following steps:
(3.1) after network chip durations t1 reaches the 75%~85% of prediction duration T, if being deleted in continuous time t2
Except module detects that user's connection amount of the type network slice in network slice state table is always zero, then removing module is deleted
The network is sliced and discharges its internal physical resource, while it is corresponding all to delete network slice in network slice state table
Information；The continuous time t2 is predict duration T 5%；
(3.2) removing module records each network and is sliced each actual duration T1, if actual duration T 1 with
Predict that duration T difference is no more than the 5% of prediction duration T, then next network slice still maintains former prediction to continue
Time T；If actual duration T and prediction duration T differ by more than the 5% of prediction duration T, enter step
(3.3)；
(3.3) removing module calculates the average value T2 of prediction duration T and actual duration T 1, and network is sliced
The former prediction duration that the network is sliced in parameter list is revised as average value T2, cuts as creation the type network next time
The prediction duration of piece.
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