CN108833181A - NG-CN network slice systems and network are sliced selection method - Google Patents
NG-CN network slice systems and network are sliced selection method Download PDFInfo
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- CN108833181A CN108833181A CN201810664782.7A CN201810664782A CN108833181A CN 108833181 A CN108833181 A CN 108833181A CN 201810664782 A CN201810664782 A CN 201810664782A CN 108833181 A CN108833181 A CN 108833181A
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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
- H04L41/0893—Assignment of logical groups to network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/50—Service provisioning or reconfiguring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
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Abstract
The present invention discloses the network slice systems of next generation mobile communication core network NG-CN a kind of, it is characterized in that, the system includes default slice and business slice, and default slice is sliced for controlling user equipment (UE) and next generation communication access net NG-RAN, business for supporting corresponding type of service.Using the present invention can provide the abilities of extensive service application, moreover it is possible to more efficiently promotion network resource usage.This can effectively solve the problems, such as that the low time delay being unable to satisfy in current mobile communications network is highly reliable, while solve the time-space distribution mismatch problem in present communications network.
Description
Technical field
The present invention relates to mobile communication fields, and in particular to a kind of network slice system of next generation mobile communication core network
System, and the selection of the slice of the network based on the system, gravity treatment and NAS routing conversion.
Background technique
Demand by user to mobile communication new demand servicing scene produces new mobile network's demand in turn.Due to current
Some basic problems in evolution block core (EPC), for example concentrate routing mechanism, current 4G LTE (long term evolution) network
It is insufficient for new demand.In this respect, next generation mobile networks framework, which needs to redesign, is used for emerging scene demand.
Wherein more most important is network enhanced mobile broadband (eMBB), magnanimity Internet of Things (mMTC) and the highly reliable connection of low time delay
(UPLLC) it services.
These emerging use-cases are that next generation mobile networks bring new demand, such as RAN (Radio Access Network) domain
It is close that interior delay is less than 1ms, the data transmission rate of average each user 1Gbs/s, and up to 10^6 equipment/km^2 flow
Degree.With regard to network data rate, for delay and connection number, they need different types of function and network.Current 4G network
It is not able to satisfy these emerging demands, because it has been optimized for current mobile phone service.However, next-generation mobile
Communication network must serve the various equipment with different characteristics and demand.
Next generation mobile communication network will be cut by using many logical network of network virtualization skill 5, i.e., so-called network
Piece is configured with specific network function, to provide the service of various different characteristics.
Fig. 1 is shown in the same infrastructure while multiple communication network scenes of operation.For example, passing through setting point
The next-generation communication network slice of typical smart phone service may be implemented in function in cloth network.For supporting automobile
The next-generation communication network slice of example, institute is functional to be instantiated in cloud fringe node, including must due to deferred constraint
That wants is longitudinally applied.For supporting the next-generation communication network slice of a large amount of machine type equipments, it is flat that basic control can be configured
Some mobility functions can be improved in face function in this way, and slow down the competition based on access resource.
But under next generation mobile communication core net NG-CN framework, existing next-generation communication network is sliced,
Its network function, slice selection, non access stratum NAS message routing mechanism are still indefinite.
Summary of the invention
(1) technical problems to be solved
In order to solve the problems in the existing technology, the invention proposes a kind of next generation mobile communication core networks
The network slice systems of NG-CN, and the network slice selection method based on the system is provided, network is sliced NAS routing forwarding
Method and network are sliced reselecting method, to realize through the multiple logical network of single physical network support.
(2) technical solution
According to an aspect of the present invention, the network slice system of next generation mobile communication core network NG-CN a kind of is proposed
System, the system include default slice and business slice, and default slice is for controlling user equipment (UE) and next generation communication access net
NG-RAN, business are sliced for supporting corresponding type of service.
According to another aspect of the invention, it is proposed that a kind of NAS method for routing, the method comprising the steps of：Step 100, UE is logical
It crosses the NG-RAN that wireless channel to be accessed to UE and sends NAS message；Step 110, NG-RAN will not include the NAS of network slice ID
Message is transmitted to the default slice of NG-RAN；Step 120, for the NAS message comprising network slice ID, NG-RAN verifies UE's
Default cuts ID, if default slice ID is not changed, NAS message is sent to the default and is sliced by NG-RAN, if default slice
ID has been changed, then the default that NAS message is forwarded to NG-RAN access is sliced by NG-RAN, wherein default slice is the next generation
A kind of network of mobile communication core network is sliced, for controlling user equipment (UE) and next generation communication access net NG-RAN.
In accordance with a further aspect of the present invention, a kind of network slice selection method is proposed, the method comprising the steps of：Step 200,
When UE booting, UE sends " registration request " message to NG-RAN；Step 210, NG-RAN receive ' search after registration request ' message
Rope and itself associated default are sliced, and obtain from the default slice of data library to be sliced to the default transmission ' registration request '
The address of the AMF example of message, and then activate AMF；Step 220, when default slice receives " registration request " message, if
Confirmation does not allow UE directly to terminate the NAS message from UE using NG-CN, AMF, if UE is allowed to use NG-CN, default slice
That business corresponding with the service type received from UE is selected to be sliced ID；Step 230, default slice is sending data grouping
Interim ID and IP address are distributed to UE while packet, after sending " registration receives " message to NG-RAN, default slice will be closed
It stores in all information of UE to DSF；Step 240, NG-RAN sends " registration receives " message, UE inspection to UE by wireless channel
The information received is looked into, wherein a kind of network that the default slice is next generation mobile communication core network is sliced, for controlling
User equipment (UE) and next generation communication access net NG-RAN processed.
In accordance with a further aspect of the present invention, a kind of NAS routing conversion is proposed, the method comprising the steps of：Step 300,
When generation user data traffic is transferred to NG-CN, UE establishes the channel with NG-RAN Radio Link；Step 310, UE is sent
" service request " message is to NG-RAN；Step 320, after NG-RAN receives " service request " message, the default of verifying UE registration
Whether slice changes, if do not changed, NG-RAN obtains transmission from the network slice ID received, and " service is asked
Ask " address of the AMF example of message, ID is then sliced according to business, NG-RAN' service request ' message is transmitted to corresponding net
Network business slice；Step 330, when AMF receives " service request " message, whether confirmation UE is authorized to use business slice,
If it is allowed, AMF is determined by calling service interface from SSF and to be used which kind of business to be sliced, then, AMF will " service be asked
Ask " message is transmitted to specific SMF example to maintain the connectivity for user data service；Step 340, SMF is according to NG-
The position selection of RAN executes the NG-GW of data forwarding function, and sends " path request " message, NG-GW NG- to NG-GW
User data traffic between RAN and NG-GW establishes path, and by result notice SMF, after receiving ' path ready ' message, such as
Fruit path is successfully established, then SMF sends ' service allow ' message to AMF；Step 350, in the business slice determined in step 330
AMF to NG-RAN send " service request " message, wherein include the information in relation to data service path, NG-RAN and NG-GW
The path for being used for user data service is established, then sends " allowing business " message to UE, UE passes through data service path allocation
IP address send user data, wherein it is described default slice be next generation mobile communication core network a kind of network be sliced,
For controlling user equipment (UE) and next generation communication access net NG-RAN.
In accordance with a further aspect of the present invention, a kind of network is sliced reselecting method, and the method comprising the steps of：Step 400, in UE
After leaving registered location, when the application program generation in UE will be sent to the user data of NG-CN, service request mistake is activated
Journey；Step 410, UE is to NG-RAN transmission ' service request ' the message newly accessed, the default slice of NG-RAN verifying UE registration
No to be changed, in case of changing, " service request " message can be sent to the default slice of NG-RAN access by NG-RAN；
Step 420, when default slice receives " service request " message, data packet and NG-RAN is sent in UE and sends " retrying " to UE
When message, default slice will be used to distribute new IP address, after sending " retrying " message including above- mentioned information to UE,
Default slice will be about all information updates of UE to DSF；Step 430, after UE receives ' retry ' message, type of service is updated
With slice ID between mapping relations, and with change after network slice ID reconstruction ' service request ' message, wherein the default
Slice is that a kind of network of next generation mobile communication core network is sliced, for controlling user equipment (UE) and next generation communication access
Net NG-RAN.
In accordance with a further aspect of the present invention, it proposes a kind of computer storage medium, is stored with computer program on the medium,
The program can be performed to realize method of the invention.
(3) beneficial effect
Scheme proposed by the present invention can be by the multiple logical network of single physical network support, by using network virtualization
The network fragment framework of technology meets various demands, a single one physical network will be divided into many logical network, i.e.,
So-called network slice, is configured with specific network function, to provide the service of various different characteristics.Due to each slice root
Ability and resource needed for business service demand customized network service according to oneself, therefore the ability of extensive service application is provided,
Network resource usage can also more efficiently be promoted.This can effectively solve the low time delay being unable to satisfy in current mobile communications network
Highly reliable problem, while solving the time-space distribution mismatch problem in present communications network.
Detailed description of the invention
Fig. 1 is that next generation wireless communication network is sliced concrete scene schematic diagram in the prior art；
Fig. 2 is to be sliced function according to the network of next generation wireless communication core net of the present invention to be intended to；
Fig. 3 is the network slice systems schematic diagram according to next generation wireless communication core net of the present invention；
Fig. 4 is NAS method for routing flow chart according to the present invention；
Fig. 5 shows the network according to the invention slice selection method schematic diagram and flow chart；
Fig. 6 shows NAS routing conversion according to the present invention；
Fig. 7 shows the network according to the invention slice reselecting method.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Next generation mobile communication core network architecture is defined in 3GPP to support data connection and service.It is moved in forth generation
Hindering present communications network effectively to meet the main problem of business demand in dynamic communication is centralized architecture, rather than completely
Isolated control and data plane.Centralized architecture will lead to inefficient flow path and Single Point of Faliure risk etc.
Problem.Due to the decoupling of the function of control plane and data surface in 4G core net, the opening of 4G LTE network and flexibility by
Limitation.This has aggravated the Capital expenditure of operator's enlarging network, while bringing difficulty to the innovation for developing new network service.
The basic conception of next generation mobile communication network is will to control plane and data plane is completely separable, and be based on network
Function is basic rather than nodal basis constructs next generation mobile communication network.In addition, it is different from 4G network, it can define and be suitble to often
The logical private network of kind of service characteristic, effectively to support enhanced mobile broadband (eMBB), magnanimity Internet of Things (mMTC) and low
Highly reliable connection (UPLLC) service of time delay.
Next generation wireless communication core network (NG-CN) framework and corresponding support data connection kimonos are defined in 3GPP
Business, so that deployment is able to use such as network function virtualization (NFV) and software defined network (SDN).Some Key Principles and
Concept is as follows：
I. data plane (DP) function and control plane (CP) function are separated.
Ii. the dependence between access network (AN) and core network (CN) is reduced to the greatest extent.
Iii. Modular function design realizes flexible and efficient network slice.
As long as being iv. applicable in, a series of interactions between network function are defined as servicing.
V. " stateless " network function is supported, wherein " calculating " resource and " storage " resource separation.
Fig. 2 depicts the reference architecture based on 3GPP reference model, wherein having in control plane based on service
Interface.
Next generation mobile communication core network architecture includes the following contents network function (NF).
Access and mobile management function (AMF)
Authentication server functions (AUSF)
Conversation management functional (SMF)
Policy control functions (PCF)
Uniform data management function (UDMF)
It is sliced selection function (SSF)
Data storage function (DSF)
User data plane function (UPF)
User equipment (UE)
Radio access network (RAN)
The present invention proposes the system of next generation mobile communication core net NG-CN based on slice a kind of on the basis of 3GPP
Architecture reference model.
Fig. 3 is the structure chart of the network slice systems of next generation mobile communication core network NG-CN according to the present invention,
The network slice systems of NG-CN are the allocation plans as the logical network for supporting special services.
Referring to Fig. 3, system of the invention is made of four kinds of slice types, is sliced and is used namely for the default of UE management
It is cut in three kinds for supporting enhancing mobile broadband eMBB, big connection Internet of Things mMTC and low time delay high reliable communication URLLC to service
Sheet type, these three slice types are hereinafter referred to as business slice.It is only through exemplary mode herein and proposes three kinds
Business slice can design the type of business slice in concrete application of the invention according to actual needs.
Wherein control of the UE and next generation communication access net NG-RAN by the same default slice.
The application program being mounted in UE has the ID of their own, and is divided into enhancing mobile broadband eMBB, extensive object
Networking mMTC and low time delay high reliable communication URLLC three classes service.
In same type of business slice, the corresponding business slice of each third party service provider is by application program mark
Know and distinguishes.It is sliced ID=AMF ID+ slice type (default slice/business slice)+final NF example ID.
Default slice is made of the common network function such as AMF, SSF, AUSF, PCF and UDMF, all in NG- for supporting
The business slice of the UE registration of CN.When UE is first connected to NG-CN, default slice certification UE allows to access network, and by UE
The type of service brought into is mapped to UE and corresponding service to be used is sliced ID, and one business slice ID of distribution and IP address are given
UE.Default slice can be installed according to decisions such as load balance and area distributions.In this case, it is cut for each default
Piece distributes an individually slice ID.
The business slice of every kind of service type consists of two parts：Shared network function, these functions are in the control plane
Business slice between be used in conjunction with, and be related to control plane and data plane particular network functions.
Each business slice is according to service provider's independent operating.The shared network function in plane is controlled by AMF, SSF
It is formed with AUSF.Particular network functions in control plane are completed by the particular network functions in SMF and data plane, data
Particular network functions in plane are completed by the UPF for data forwarding function.The business slice of various service types can be with
It is controlled, can also be operated according to decision, such as load balancing and area distribution decision by a default slice.
The present invention also proposes a kind of NAS method for routing based on network slice systems of the invention, and the NAS from UE is disappeared
Breath is routed to network slice appropriate, as shown in figure 4, the method comprising the steps of：
Step 100, UE sends various NAS messages by the wireless channel NG-RAN to be accessed to UE, and NAS message includes
UE_ID, business slice type and application program ID (if necessary) and network slice ID (are cut comprising default slice and business
Piece) (if present).
NAS message be used as realizing data information between user terminal and NG-RAN and NG-CN based on slice or
Control the interaction of information.(foundation, release or the mobility management information of such as business) UE_ID is the unique identification of UE, is used for
Identify corresponding UE.
Business slice type includes eMBB business slice, mMTC business slice or URRLC business slice.
Application program ID different application for identification in the present invention.
Network slice ID (system can distribute one group of hexadecimal number as slice ID when network slice generates) is for identifying
Different types of network slice, the ID of network slice include that default slice ID and business are sliced ID.Default is sliced by AMF, SSF,
The common network function composition such as AUSF, PCF and UDMF, the business slice for supporting the UE of NG-CN to register.When UE is connected for the first time
When to NG-CN, default fragment certification UE allows to access network, and the type of service that UE is brought into is mapped to UE for phase to be used
It should be sliced ID, and distribute a business slice ID and IP address to UE.
Step 110, the default that the NAS message for not including network slice ID is transmitted to NG-RAN is sliced by NG-RAN；Due to
The control that UE and NG-RAN is sliced by the same default, if not including network in NAS message is sliced ID, by the silent of NG-RAN
Recognize slice its ID is included in NSA information, guarantees the normal random access of UE.
Step 120, for comprising network slice ID NAS message, NG-RAN verify UE default be sliced ID, due to UE with
NG-RAN by it is same default slice control, if in NAS message institute default slice ID and NG-RAN default slice ID
It is identical, then default slice ID and do not change, NAS message is sent to the default and is sliced by NG-RAN, if it is different, then default slice ID
It has been changed that, the default that NAS message is forwarded to NG-RAN access is sliced by NG-RAN.
This is done to be sliced the customization of service, when a certain specific slice service of handset customization, NSA information is necessary
Correct network slice ID is carried to correspond to the customization of specific slice service.When not needing customization slice service, only require normal
When random access, can not carry network slice ID or the unacceptable business slice ID of verifying (is also likely to be that network provides not
Required slice types of customization)
All application services being mounted in UE are classified as three kinds of service types by UE, i.e., enhanced mobile broadband eMBB,
Magnanimity Internet of Things mMTC and the highly reliable linking URL LC service of low time delay.UE is each by default slice during registration process
Service type assignment business is sliced ID.The NAS method for routing through the invention, may be implemented flexible according to business service demand
Ability and resource needed for customized network service, therefore the ability of extensive service application is provided, moreover it is possible to more efficiently promotion network
The utilization of resources.This solves the time-space distribution mismatch problem in present communications network.Meanwhile distributed slice network structure
Solves the problems such as traditional centralized architecture will lead to such as inefficient flow path and Single Point of Faliure risk.
The present invention also proposes that a kind of network slice selection method based on network slice systems of the invention, this method use
Above-mentioned NAS method for routing.Slice selection is executed when UE is registered to NG-CN.Under the lamellar structure of Fig. 3, UE was registered
Journey and slice selection course as shown in figure 5, immediately access NG-CN for UE after powering.
Referring to Fig. 5, it includes step that network, which is sliced selection method,：
Step 200, when UE is switched on, UE receives radio signal and synchronous with radio channel from the NG-RAN of surrounding,
In order to access NG-CN, it includes " infusing for the manageable UE information of UE (for example, UE ID and service type) that UE is sent to NG-RAN
Volume request information；
Step 210, it is controlled since UE and NG-RAN is sliced by same default, receive ' registration request ' message (encapsulates phase
The default slice ID answered, requested service slice type) after, NG-RAN search and itself associated default slice, and from the default
The address that be sliced the AMF example of transmission ' registration request ' message to the default is obtained in slice of data library, and then activates AMF
(AMF terminates the NAS message from UE, and is responsible for the IP connection service of management UE, is specifically shown in following steps)；
Step 220, when default slice receives " registration request " message, it requests UE registration information, default to UDMF
After slice receives UE registration information from UDMF, it is confirmed whether to allow UE using NG-CN, if it is not allowed, AMF is directly terminated
From the NAS message of UE, if it is allowed, then default slice can generate be mutually authenticated with key needed for safety, and default cut
Piece selection with from service type that UE is received (being included in registration information) corresponding that business slice ID.
Step 230, default slice distributes one for identifying facing for UE identity to UE while sending data grouping packet
When ID and IP address, after sending " registration receives " message to NG-RAN, default slice stores all information about UE
To DSF；
Step 240, NG-RAN sends " registration receives " message to UE by wireless channel, and UE checks the information received,
Such as it is used to mutually authenticate the key with safety, network is sliced ID, time ID and the IP address for data transmission.
The present invention also proposes a kind of network slice NAS routing conversion, the application after being registered to NG-CN, in UE
Accessible internet.Fig. 6 is the service request under the network piece cutting structure when the application program in UE is activated in Fig. 3
Process.
Referring to Fig. 6, it includes step that network, which is sliced NAS routing conversion,：
Step 300, when generation user data traffic is transferred to NG-CN, UE establishes the channel with NG-RAN Radio Link；
Step 310, UE sends " service request " message comprising time ID, authorization key and are worked as current application program ID
The network slice ID (including default slice and corresponding business slice) of preceding distribution arrives NG-RAN, user data may be embodied in '
Transmitted towards connectionless data in service request ' message；
Step 320, after NG-RAN receives " service request " message, the network received by comparing is sliced silent in ID
Recognize the default slice ID of slice ID and NG-RAN access, whether the default slice of verifying UE registration changes, if in comparison
The AMF ID stated in two default slice ID is identical, then illustrates that the default slice of UE registration does not change, in this case,
NG-RAN obtains the address for sending the AMF example of " service request " message from the network slice ID received, then according to industry
NG-RAN' service request ' message is transmitted to corresponding network service and is sliced by business slice ID, executes step 330；If UE is registered
Default slice have occurred and that variation, then need to re-start network slice select the step of；
Step 330, when AMF receives " service request " message, it passes through based on the subscriber information in application server
Application ID is checked to confirm whether UE is authorized to use network slice (business slice), if it is allowed, AMF from SSF by calling
Service interface will use which kind of business slice (eMBB is sliced, mMTC slice or URRLC slice) to determine, then, AMF will
" service request " message is transmitted to specific SMF example to maintain the connectivity for user data service；
Step 340, SMF selects to execute the NG-GW (gateway) of data forwarding function according to the position of NG-RAN, and to NG-
GW sends " path request " message, is used for routing user data flow.User data of the NG-GW between NG-RAN and NG-GW
Flow establishes path, and by result notice SMF.After receiving ' path ready ' message, if path is successfully established, SMF is to AMF
Send ' service permission ' message.
Step 350, the AMF in business slice determined in step 330 sends " service request " message to NG-RAN, wherein
Include the information in relation to data service path.NG-RAN and NG-GW establishes the path for being used for user data service, then sends out to UE
Send " service is established " message.UE sends user data by the IP address of data service path allocation.
The present invention also proposes that a kind of network slice reselecting method, Fig. 7 are to select new network piece after UE removes registered location
Process.Referring to Fig. 7, it includes step that network, which is sliced reselecting method,：
Step 400, after UE leaves registered location, when the application program generation in UE will be sent to the number of users of NG-CN
According to when, activate service request procedure；
Step 410, UE is sent comprising one to the NG-RAN newly accessed for identifying the interim ID of UE identity, is authorized close
Key, application identities and it is corresponding with applied business type prestore business slice ID ' service request ' message.The NG-RAN passes through
Compare the AMF ID in the default slice ID of the default slice ID and NG-RAN access in the network slice received to verify UE
Whether the default slice of registration is changed, if AMF ID is different, the default slice of UE registration is changed, NG-RAN meeting
" service request " message is sent to the default slice of NG-RAN access, executes step 420；If AMF ID is identical, UE
The default slice of registration does not change, then network continues to operate normally, and does not trigger following steps.
Step 420, when default slice receives " service request " message (comprising the UE registration information being stored in DSF)
When, when UE sends data packet and NG-RAN and sends " retrying " message to UE, default slice will be used to distribute new IP address.
After sending " retrying " message including above- mentioned information to UE, default slice will be about all information updates of UE to DSF；
Step 430, after UE receives ' retry ' message, the mapping relations for updating type of service and being sliced between ID are used in combination
Network slice ID reconstruction ' service request ' message after change, subsequent step are identical as service request procedure.
To sum up, by the present invention in that meeting all these demands with the network slice systems of network virtualization technology.It will
One single one physical network will be divided into many logical network, i.e., so-called network slice is configured with specific network function,
To provide the service of various different characteristics.
Ability and resource needed for being serviced due to each slice according to the business service demand customized network of oneself,
The ability of extensive service application can be provided, moreover it is possible to more efficiently promotion network resource usage.
Those skilled in the art are considering specification and after practicing disclosure disclosed herein, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (10)
1. a kind of network slice systems of next generation mobile communication core network NG-CN, which is characterized in that the system includes default
Slice and business slice, default slice are used for controlling user equipment (UE) and next generation communication access net NG-RAN, business slice
In the corresponding type of service of support.
2. system according to claim 1, which is characterized in that the network function of composition default slice is supported all next
The business slice of the user equipment (UE) registration of generation wireless communication core network NG-CN, when UE is first connected to NG-CN, default
Slice certification UE allows to access network, and the type of service that UE is brought into is mapped to UE and corresponding service to be used is sliced ID,
And an interim ID and IP address are distributed to UE.
3. system according to claim 1, which is characterized in that the business slice of every kind of service type consists of two parts：
Can the shared network function that be used in conjunction between business slice in the control plane, and be related to controlling plane and data plane
Particular network functions.
4. system according to claim 3, which is characterized in that it is described control plane in shared network function by access and
Mobile management function AMF, slice selection function SSF and authentication server functions AUSF composition, control the particular network in plane
Function is made of the particular network functions in conversation management functional SMF and data plane, the particular network functions in data plane
It is made of the user data plane function UPF for data forwarding function.
5. system according to claim 1-4, which is characterized in that UE, which is sliced during registration process by default, is
Each service type assignment business is sliced ID, service type include enhanced mobile broadband eMBB, magnanimity Internet of Things mMTC, it is low when
Prolong highly reliable linking URL LC service.
6. a kind of NAS method for routing, which is characterized in that the method comprising the steps of：
Step 100, UE sends NAS message by the wireless channel NG-RAN to be accessed to UE；
Step 110, the default that the NAS message for not including network slice ID is transmitted to NG-RAN is sliced by NG-RAN；
Step 120, for the NAS message comprising network slice ID, the default of NG-RAN verifying UE cuts ID, if default slice ID
It does not change, then NAS message is sent to default slice by NG-RAN, if default slice ID has been changed, NG-RAN disappears NAS
Breath is forwarded to the default slice of NG-RAN access,
Wherein the default slice is that a kind of network of next generation mobile communication core network is sliced, for controlling user equipment (UE)
Net NG-RAN is accessed with next generation communication.
7. a kind of network is sliced selection method, which is characterized in that the method comprising the steps of：
Step 200, when UE is switched on, UE sends " registration request " message to NG-RAN；
Step 210, NG-RAN receive ' after registration request ' message search be sliced with itself associated default, and from default slice
The address that be sliced the AMF example of transmission ' registration request ' message to the default is obtained in database, and then activates AMF；
Step 220, when default slice receives " registration request " message, if it is confirmed that not allowing UE using NG-CN, AMF is straight
It connects and terminates the NAS message from UE, if UE is allowed to use NG-CN, default the service type for being sliced selection and receiving from UE
That corresponding business is sliced ID；
Step 230, default slice distributes one for identifying the interim ID of UE identity to UE while sending data grouping packet
And IP address, after sending " registration receives " message to NG-RAN, default slice arrives all information storages about UE
DSF；
Step 240, NG-RAN sends " registration receives " message to UE by wireless channel, and UE checks the information received,
Wherein the default slice is that a kind of network of next generation mobile communication core network is sliced, for controlling user equipment (UE)
Net NG-RAN is accessed with next generation communication.
8. a kind of NAS routing conversion, which is characterized in that the method comprising the steps of：
Step 300, when generation user data traffic is transferred to NG-CN, UE establishes the channel with NG-RAN Radio Link；
Step 310, UE sends " service request " message to NG-RAN；
Step 320, after NG-RAN receives " service request " message, whether the default slice of verifying UE registration changes, such as
Fruit does not change, and NG-RAN obtains the ground for sending the AMF example of " service request " message from the network slice ID received
Then location is sliced ID according to business and NG-RAN' service request ' message is transmitted to corresponding network service slice；
Step 330, when AMF receives " service request " message, whether confirmation UE is authorized to use business slice, if permitted
Perhaps, AMF is determined by calling service interface from SSF and to be used which kind of business be sliced, and then, AMF is by " service request " message
Specific SMF example is transmitted to maintain the connectivity for user data service；
Step 340, SMF selects to execute the NG-GW of data forwarding function according to the position of NG-RAN, and sends " path to NG-GW
Request information, user data traffic of the NG-GW between NG-RAN and NG-GW establish path, and by result notice SMF, receive
To after ' path ready ' message, if path is successfully established, SMF sends ' service allow ' message to AMF；
Step 350, the AMF in business slice determined in step 330 sends " service request " message to NG-RAN, wherein including
Information in relation to data service path, NG-RAN and NG-GW establish the path for being used for user data service, then send to UE
" business permission " message, UE send user data by the IP address of data service path allocation,
Wherein the default slice is that a kind of network of next generation mobile communication core network is sliced, for controlling user equipment (UE)
Net NG-RAN is accessed with next generation communication.
9. a kind of network is sliced reselecting method, which is characterized in that the method comprising the steps of：
Step 400, after UE leaves registered location, when the application program generation in UE will be sent to the user data of NG-CN,
Activate service request procedure；
Step 410, UE is to NG-RAN transmission ' service request ' the message newly accessed, the default slice of NG-RAN verifying UE registration
No to be changed, in case of changing, " service request " message can be sent to the default slice of NG-RAN access by NG-RAN；
Step 420, when default slice receives " service request " message, data packet and NG-RAN is sent in UE and is sent to UE
When " retrying " message, default slice will be used to distribute new IP address,
After sending " retrying " message including above- mentioned information to UE, default slice arrives all information updates about UE
DSF；
Step 430, after UE receives ' retry ' message, the mapping relations for updating type of service and being sliced between ID, and with change
Network slice ID reconstruction ' service request ' message afterwards,
Wherein the default slice is that a kind of network of next generation mobile communication core network is sliced, for controlling user equipment (UE)
Net NG-RAN is accessed with next generation communication.
10. a kind of computer storage medium, which is characterized in that be stored with computer program on the medium, which can be held
Row is to realize the method as described in weighing and require 6-9.
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