CN109756937A - Business continuance support method, functional network element and storage medium - Google Patents
Business continuance support method, functional network element and storage medium Download PDFInfo
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Abstract
The embodiment of the invention discloses a kind of business continuance support method, functional network element and storage mediums.Network element is stored applied to core net, the business continuance support method includes: the context of the specified application on the source AF for store user equipment (UE) access；The context of the specified application is sent to target AF, wherein the context of the specified application provides the application service of the specified application for continuing as the AF for the target AF.
Description
Technical field
The present invention relates to wireless communication technology field more particularly to a kind of business continuance support method, functional network element and
Storage medium.
Background technique
In wireless communication technology field, since user equipment (User Equipment, UE) has mobility.UE is mobile
Afterwards, UE access can also change therewith to the base station of network, the functional network element that uses.It finds, answers in practical application scene
With using there is the unnecessary repeating transmission of business data packet, alternatively, the phenomenon that leakage hair, especially UE access network side some
Movement has occurred during, causes the problem of the business continuances difference such as this business datum packet retransmission or leakage hair especially bright
It is aobvious.
Summary of the invention
In view of this, an embodiment of the present invention is intended to provide a kind of business continuance support method, functional network element and storages to be situated between
Matter at least partly solves the above problems.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
In a first aspect, the embodiment of the present invention provides a kind of business continuance support method, it is applied to core net and stores network element,
Include:
Store the context of the specified application on the source application function network element AF of user equipment (UE) access；
The context of the specified application is sent to target AF, wherein the context of the specified application, for for institute
It states target AF and continues as the UE and the application service of the specified application is provided.
Optionally, the context of the specified application on the source AF of the storage user equipment (UE) access, comprising:
Receive the storage notice sent when the user plane functions network element UPF switching of the UE access；
It is notified according to the storage, the context of the specified application on the source AF of storage user equipment (UE) access.
Based on above scheme, the storage that the user plane functions network element UPF for receiving the UE access is sent when switching is logical
Know, comprising:
Receive the storage notice that conversation management functional network element SMF is sent when receiving the switching notice that UPF is sent.
Based on above scheme, the method also includes:
Receive the access notifications of the specified application of the UE access target AF, wherein the access notifications can be the UE, institute
It states target AF or detects what network element was sent；
The context by the specified application is sent to target AF, comprising:
After receiving the access notifications, the context of the specified application is sent to the target AF.
Based on above scheme, the method also includes:
The corresponding former network protocol IP address for storing the UE and the context of the specified application；
The updated new IP address of the UE is received,
According to the device identification of UE, the corresponding relationship of the former IP address and the new IP address is established；
The method also includes:
Obtain the access notifications that the UE accesses the target AF with new IP address；
The context by the specified application is sent to target AF, comprising:
According to the corresponding relationship and the new IP address, the context of the specified application of storage is sent to described
Target AF.
Based on above scheme, the context of the specified application includes at least one of:
The business datum of the specified application sends condition information；
The business datum of the specified application receives condition information.
Based on above scheme, the context of the specified application on the source AF of the storage user equipment (UE) access, comprising:
Store the upper of the device identification of the UE, IP address, the application identities of the specified application and the specified application
Hereafter.
Based on above scheme, the core net storage network element is the open functional network element NEF of network capabilities.
Second aspect, the embodiment of the present invention provide a kind of business continuance support method, it is applied to session management network element
SMF, comprising:
When receiving the switching notice of user plane functions network element UPF of user equipment UE access, net is stored to core net
Member sends storage notice；Wherein, the storage notice, for triggering core net storage network element storage UE access originator application function net
The context of application is specified on first AF.
Based on above scheme, the method also includes:
By at least one of the new IP address of the location information of the target UPF of the UE and the UE, it is sent to institute
State core net storage network element；
Wherein, the location information of the target UPF, for determining target AF for core net storage network element；
The new IP address, for establishing the former IP address and new IP address of the UE for core net storage network element
Corresponding relationship；Wherein, the corresponding relationship is receiving the UE for triggering the core net storage network element with new IP address
The context of storage is sent when the access notifications of access target AF to target AF.
The third aspect, the embodiment of the present invention provide a kind of business continuance support method, including, it is applied to target application function
In energy network element AF, comprising:
The context that application is specified on user equipment (UE) access originator AF is received from core net storage network element；
Based on the context of the specified application, the access request that the UE accesses the specified application is responded.
Based on above scheme, the method also includes:
Receive the access request that the UE accesses the specified application；
Based on the access request, Xiang Suoshu core net storage network element sends the access for carrying the identification information of the UE
Notice；Wherein, the identification information of the UE include: the device identification of the UE and the IP address of the UE at least within it
One；
The context that the specified application of user equipment (UE) access is received from core net storage network element, comprising:
Receive the context for the specified application that the core net storage network element is returned based on the access notifications.
Fourth aspect, the embodiment of the present invention provide a kind of functional network element, and the functional network element is that core net stores network element, packet
It includes:
Storage unit, the context of the specified application on the AF of source for storing user equipment (UE) access；
First transmission unit, for the context of the specified application to be sent to target AF, wherein the specified application
Context, for continuing as the AF for the target AF and providing the application service of the specified application.
5th aspect, the embodiment of the present invention provide a kind of functional network element, and the functional network element is session management network element SMF,
Include:
Second transmission unit, for the switching notice as the user plane functions network element UPF for receiving user equipment UE access
When to core net storage network element send storage notice；Wherein, the storage notice, for triggering core net storage network element storage UE
The context of application is specified on access originator application function network element AF.
6th aspect, the embodiment of the present invention provide a kind of functional network element, including, it is applied to target application functional network element AF
In, comprising:
Receiving unit, for from core net storage network element receive user equipment (UE) access originator AF on specify application up and down
Text；
Response unit responds the visit that the UE accesses the specified application for the context based on the specified application
Ask request.
7th aspect, the embodiment of the present invention provide a kind of functional network element, comprising: transceiver, memory, processor and storage
The computer program executed on a memory and by the processor；
The processor is connect with the transceiver and memory respectively, for executing the computer program, with aforementioned
The business continuance support method that one or more technical solutions provide.
Eighth aspect, the embodiment of the present invention provide a kind of computer storage medium, and the computer storage medium is stored with
Computer program；After the computer program is performed, it can be realized the business that aforementioned one or more technical solutions provide and connect
Continuous property support method.
The embodiment of the present invention provides business continuance support method, functional network element and storage medium, in the AF hair of UE access
When raw switching, core net storage network element can store the context that application is specified on UE access originator AF, and be transmitted to target AF, in this way
If, target AF can provide the application of the same application according to UE is continued as from the core net storage received context of network element
Service, so as to avoid because not knowing the context on previous AF, caused data leakage is sent out and/or polyisomenism, from
And solve the problems, such as that business continuance is poor, so that improving UE accesses the business continuance of the same application of different AF and steady
It is qualitative.
Detailed description of the invention
Fig. 1 is the flow diagram of the first business continuance support method provided in an embodiment of the present invention；
Fig. 2 is the flow diagram of second of business continuance support method provided in an embodiment of the present invention；
Fig. 3 is the flow diagram of the third business continuance support method provided in an embodiment of the present invention；
Fig. 4 is the flow diagram of the third business continuance support method provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram that a kind of core net provided in an embodiment of the present invention stores network element；
Fig. 6 is a kind of structural schematic diagram of target AF provided in an embodiment of the present invention；
Fig. 7 is a kind of network architecture schematic diagram provided in an embodiment of the present invention；
Fig. 8 is the flow diagram of another business continuance support method provided in an embodiment of the present invention；
Fig. 9 is a kind of structural schematic diagram of functional network element provided in an embodiment of the present invention.
Specific embodiment
Technical solution of the present invention is further described in detail with reference to the accompanying drawings and specific embodiments of the specification.
As shown in Figure 1, being applied to core net the present embodiment provides a kind of business continuance support method and storing network element, packet
It includes:
Step S110: the context of the specified application on the source AF of storage user equipment (UE) access；
Step S120: the context of the specified application is sent to target AF, wherein above and below the specified application
Text provides the application service of the specified application for continuing as the AF for the target AF.
Core net described in the present embodiment, which stores network element, can be various types of with store function and be located at core net
In network element.In the present embodiment, the core net storage network element can be open functional network element (the Network Exposure of ability
Function, NEF), it can also be other network elements, for example, access application control entity (Application Access
Control, ACC) etc..In the present embodiment, the core net storage network element is chosen as the communication network on isolation communication operation
With the network element of network where the AF such as third-party application server.For example, the source AF and target AF can be with the caching network elements
Connection, but connection may not be established each other, alternatively, needing to cache communication network where network element etc. carries out business datum
The management of transmission controls, therefore can temporarily be stored and be forwarded by caching network element and access the upper and lower of the same application on different AF
Text, in this case, the safety that is compatible strong and can ensuring service data visitation with existing network.
For example, the UE such as mobile phone, tablet computer or vehicle-mounted UE have mobility, can be covered in different mobile networks
It is moved in region.If the geographical location of UE is changed, the AF of UE access can switch.In the present embodiment, described
Source AF is the AF that UE was accessed originally, the AF that the target AF can be accessed after mobile for UE.
In the present embodiment, the core net storage network element can store the context that application is specified on the source AF of UE.It is described
Specified application can be any type of application, for example, shopping application, payment application, social application either reading application etc..Institute
Specified application is stated, can negotiate in advance between UE and core net storage network element, be also possible to through application identities come specified.
In the present embodiment, the specified application can be the application of predefined type business, for example, when offer superelevation is reliably low
Prolong the application of communication (URLLC) business service.
The context of the specified application on the source AF can be stored in step s 110.The context of the specified application can
Include:
The business datum of the specified application sends condition information, for example, the sequence number of data packet has been sent, data packet
Identification number (ID).
The business datum of the specified application receives condition information.The business datum receives condition information, and being can root
Reception feedback of the data packet or retransmission request etc. are determined according to UE.For example, UE often receives one in some scenes
A data packet can be sent when can all send confirmation (ACK) response of a data packet, not receive the received data packet of needs
Deny (NACK) response.In some cases, it when UE can also not receive the received data packet of expectation in the given time, can send out
Send retransmission request.These information all characterize UE to the reception situation of business datum.
In the present embodiment, the context of the specified application can be the transmission situation letter of the business datum of specified application
Breath and at least one for receiving condition information.
The context of the storage specified application in the present embodiment, it may include at least one of:
The context of the specified application is cached in the memory of core net storage network element；
It is answered in described specify of specific memory section (some storage location on hard disk) storage of core net storage network element
Context.
In the present embodiment, the upper and lower of the specified application is preferably temporarily stored in the memory of core net storage network element
Text when needing to be sent to target AF in this way, can read directly from memory, be able to ascend speed and reduce core net and deposit
Store up the operation that network element reads data from hard disk.
In step s 110 while storing the context of the specified application, answering for the specified application can be also stored
With at least one of mark, the device identification of the UE and IP address.The application identities can be Apply Names, using sequence
Row number etc..The device identification of the UE can include: the equipment Serial Number of the UE, for example, international mobile phone equipment identification code
(International Mobile Equipment Identity) etc..The IP address can be to distribute to the IPv4 of the UE
Address or the address IPv6 etc..
In the present embodiment step S120, the context of the specified application can be sent to target AF, in this case, mesh
Mark AF (switch after AF) will appreciate that specified using upper transmitting-receiving condition information on UE access originator AF, therefore can be based on source AF
The interaction condition of business datum between UE provides application service to UE, reduces repeating transmission and the leakage hair of unnecessary data packet.
In the present embodiment, the specific executive mode of the step S120 has following several:
The first:
The context of the specified application is actively pushed to target AF, in this case, once core net store network element at
Function has cached the context of the specified application of the source AF, and target AF has been determined, will automatically forward the context of caching
Target AF is given, before receiving the request of the access specified application of UE, the target AF just has received such target AF
The context of the specified application, the context that can be directly based upon the specified application sends data to the UE, thus really
Protect business continuance.
Second:
It, will not be actively to mesh after the core net storage network element stores the context of the specified application on the source AF
Mark AF sends the context of the specified application, after only meeting certain trigger condition, can just send to the target AF
The context of the specified application of storage.For example, only determine that the UE continues to access the specified application on the target AF,
In this case just it is necessary to which the context of the specified application is sent to the target AF, the biography of unnecessary context is reduced
It is defeated, to reduce the data volume of transmission.
In some embodiments, the method also includes:
Setting caching timer；
After the caching timer expiry, the context or invalid storage of the specified application of storage are deleted
The context of the specified application.
In this case, it is possible to reduce do not continue to save the storage of the context of meaning in core net storage network element.
For example, the AF that UE 1 is accessed is switched to AF2 from AF1, answered on UE1 access AF1 if core net storage network element has cached
It is previous to illustrate that user may be not desired to continue if UE1 is never wanted access to using X after being switched to AF2 with the context of X
The secondary operation using X then continues to save at this time on AF1 and the context of X is applied just to be not necessarily to, therefore in the present embodiment, lead to
Setting caching timer is crossed, once caching timer expiry, then be automatically deleted the context being not necessarily to.
In further embodiments, as shown in Fig. 2, the method also includes:
Step S130: after the context of the specified application is sent to target AF, the upper of the specified application is deleted
The hereafter or in vain context of the specified application.
If after the context of the specified application is deactivated, the memory space of the context occupancy of the specified application
It is released, the context before being covered by other data.
In some embodiments, the step S110 can include:
When detecting caching trigger condition, the context of the specified application on the source AF of the UE access is cached.It is optional
Ground such as, the step S110 can include:
Receive the storage notice sent when the UPF of the UE access switches；
It is notified according to the storage, the context of the specified application on the source AF of storage user equipment (UE) access.
In a communication network (for example, in the 5th generation (5G) communication network), network has been divided into control plane and user face.At this
In embodiment, control plane is used for the transmission of control signaling, and user face is used for the transmission of business datum.If UE is mobile, session pipe
Reason functional entity (SMF), which can be triggered, carries out the switching of UPF.If UPF switches, usual AF is also required to send switching.
For example, the UPF of the UE access switches, the SMF can receive the switching notice of UPF transmission, the SMF
After receiving switching notice, then the SMF can store network element to the core net and send storage notice, in this case, institute
The storage notice that SMF is sent when receiving the switching notice of UPF transmission can be received by stating core net storage network element.
In the present embodiment, if SMF needs to be implemented UPF switching, network element can be stored to core net and sends storage notice.Institute
State the context storage for the specified application that core net storage network element is just will do it after receiving storage notice on the source AF.
The context of specified application on the caching source AF, it may include:
Cache request is sent to the source AF, wherein the cache request can include: the identification information of the UE, described
The application identities of specified application；
Receive and store the context for the specified application that the source AF is returned based on the cache request.
In also some embodiments, the step S110 may also include that
Receive the transmissions storage notice such as target AF, detection network element；For example, UE has begun access target AF, the mesh
Network element transmission storage notice can be stored from trend core net by marking AF, and the core net storage network element that just sets out reads institute from the AF of source
State the context of specified application.Certainly, the modes such as Packet analyzing be can use in order to reduce the detection network element such as time delay, such as gateway,
It determines whether the AF of current UE access changes, network element can be stored to the core net if being changed and send institute
State storage notice.For example, gateway etc. can use described in packet deep analysis (Deep Packet Inspection, DPI) parsing
The packet header for the access request that UE is sent and text, so that the address of the AP of current accessed is obtained, if variation has been freeed in the address of AP,
The AF of obvious UE access is switched, and network element can be stored to corresponding core net and sends the storage notice.It herein, is only to lift
Example, it is not limited to this when specific implementation.
Optionally, the method also includes:
Receive the access notifications of the specified application of the UE access target AF, wherein the access notifications can be the UE, mesh
It marks AF or detects what network element was sent；
The step S120 is specific can include:
After receiving the access notifications, the context of the specified application is sent to the target AF.
Context is sent to the mode of target AF by the core net storage network element, is at least divided into active push, and be based on
Certain trigger condition is sent.In the present embodiment, it can be received on UE access target AF from UE, target AF or detection network element etc.
When the access notifications of specified application, context just is sent to the target AF, to reduce the transmission of unnecessary context.
Optionally, the method also includes:
The corresponding former IP address for storing the UE and the context of the specified application；
The updated new IP address of the UE is received,
According to the identification information of the UE, the corresponding relationship of the former IP address and the new IP address is established；
The method also includes:
Obtain the access notifications that the UE accesses the target AF with new IP address；
The step S120 can include:
According to the corresponding relationship and the new IP address, by the context of the specified application of storage；
It is sent to the target AF.
During AF carries out UPF and AF switching, the UE assigned IP address may also can change, in order to
The variation for avoiding this IP address causes subsequent not determining whether to be that the same UE is accessed same specified on different AF
In application, the new IP address after the network elements such as described SMF can also replace UE is sent to core net storage network element in advance, it is such
Words, core net storage network element is it is known that former IP address and new IP address before the IP address replacement of UE.
The core net storage network element can establish the former IP address and new IP address after receiving new IP address
Mapping relations, for example, corresponding store the former IP address and the new IP address, to establish the mapping relations.
In this case, it even if UE accesses the target AF with new IP address after the AF switching of UE access, receives and takes
It, can also even if core net storage network element is not known by the device identification of UE when the access notifications of the new IP address with UE
With context needed for determining current goal AF based on new IP address.
As shown in figure 3, being applied to session management network element SMF, packet the present embodiment provides a kind of business continuance support method
It includes:
Step S210: when receiving the switching notice of user plane functions network element UPF of UE access, net is stored to core net
Member sends storage notice；Wherein, the storage notice, for triggering core net storage network element storage UE access originator application function net
The context of application is specified on first AF.
In the present embodiment, the method is applied to the method in SMF.The SMF is applied not only to the session management of UE,
Also it is used in the caching etc. of triggering core net storage network element context.
Therefore in the present embodiment, the SMF can be in the UPF for needing to switch UE, to described in core net storage network element transmission
Storage notice.In this case, after core net storage network element receives the storage notice, it can move to read on the source AF of UE and specify
The context of application, and be locally stored.
Further, the method also includes:
By at least one of the new IP address of the location information of the target UPF of the UE and the UE, it is sent to institute
State core net storage network element；
Wherein, the location information of the target UPF, for determining target AF for core net storage network element；
The new IP address, for establishing the former IP address and new IP address of the UE for core net storage network element
Corresponding relationship, wherein the corresponding relationship, for triggering core net storage network element in conjunction with indicating the UE with new IP
When the access notifications of location access target AF, the context of storage is sent to target AF.
In the present embodiment, the location information of the target UPF of the UE can also be informed that the core net stores by the SMF
Network element.The location information of usual UPF and the location information of AF have corresponding relationship, and in this case, the core net stores network element
The location information of AF can be determined according to the location information of the target UPF, so that it is determined that target AF out.
In some embodiments, the IP address of UE may also can change, if in this case, it is also necessary to by the new IP
Address informs that core net stores network element, and the core net storage network element is facilitated to establish the correspondence between new IP address and former IP address
Relationship.
As shown in figure 4, the present embodiment provides a kind of business continuance support methods, including, it is applied in target AF, packet
It includes:
Step S310: the context that application is specified on UE access originator AF is received from core net storage network element；
Step S320: the context based on the specified application responds the UE and accesses the access of the specified application and asks
It asks.
The present embodiment provides a kind of business continuance support methods applied in target AF.
In some embodiments, the target AF with UE carry out service data interaction before, if UE be from access other
Specified application on AF, the specified application being switched on access target AF then need to store from core net on network element described in reading
The context of the specified application of UE access.
In the present embodiment, after the context for having read the specified application on UE access originator AF, the source is just obtained
The transmitting-receiving condition information of the business datum based on specified application between AF and the UE, so as to based on business number before
According to transmitting-receiving condition information, with the UE carry out service data interaction, thus reduce unnecessary business datum repetition send,
And phenomena such as reducing the leakage hair of data of request repeat, to promote the continuity of business datum.
Optionally, the method also includes:
Receive the access request that the UE accesses the specified application；
Based on the access request, the access for the identification information that Xiang Suoshu core net storage network element carries the UE is logical
Know；Wherein, the identification information of the UE includes: at least one of the device identification of the UE and the IP address of the UE；
The step S320 can include:
Receive the core net storage network element, the context based on the specified application that the access notifications return.
In the present embodiment, the target AF can be after the request for receiving the specified application of UE access, Xiang Suoshu
Core net stores network element and sends the access notifications, and in the present embodiment, the access notifications can carry the mark letter of the UE
Breath, the identification information of the UE, it may include: the device identification of UE and/or IP address etc..In some embodiments, the access is logical
Know further include: the application identities of the specified application.
The core net storage network element can be after receiving the access notifications, the UE based on access notifications carrying
Identification information, inquire the context of storage, and context is sent to target AF, in this case, target AF will receive
The context of the specified application.
In some embodiments, the access request of the specified application of the UE access target AF is reaching the target AF
Before, the caching network element just has been based on the access notifications of the detection network element or UE or the target AF has sent the finger
Surely the context applied, or context based on active push principle by the specified application have sent target AF, then this
Shi Suoshu target AF has just stored the context of the specified application, it is not necessary to repetitive requests context.Therefore
In other embodiments, the target AF not yet receives institute after receiving the UE and accessing the request of the specified application
The context for specifying application on the UE access originator AF that core net storage network element is sent is stated, then sends the access notifications.
As shown in figure 5, the functional network element is that core net stores network element the present embodiment provides a kind of functional network element, comprising:
Storage unit 110, the context of the specified application on the AF of source for storing user equipment (UE) access；
First transmission unit 120, for the context of the specified application to be sent to target AF, wherein described specified
The context of application provides the application service of the specified application for continuing as the AF for the target AF.
Core net described in the present embodiment, which stores network element, to be the functional network elements such as NEF or ACC.
First transmission unit 120 can correspond to transmission interface, which can connect with target AF, can be to mesh
It marks AF and sends context.
Network element is stored by core net and stores the context specified and applied on UE access originator AF, and is transmitted to target AF, this
The context that sample target AF can store network element offer based on core net continues as UE and provides the application service of the same application, this
Sample can be good at guaranteeing business continuity, and the repeating transmission and/or leakage discovery for reducing data packet are as and can satisfy business access
Delay requirement.
Optionally, the cache unit, further includes:
First notification receiving unit, can correspond to communication interface, can be used for receiving the user plane functions network element UPF of the UE
The storage notice sent when switching；
The storage unit 110 is specifically used for being notified according to the storage, on the source AF of storage user equipment (UE) access
The context of specified application.
Optionally, the core net stores network element further include:
Second notification receiving unit, can correspond to communication interface, can be used for receiving the specified application of the UE access target AF
Access notifications, wherein the access notifications can for UE, target AF or detect network element send；
First transmission unit 120, specifically for after receiving the access notifications, by the upper of the specified application
Hereafter it is sent to the target AF.
Optionally, the storage unit 110 is also used to the corresponding former network protocol IP address for storing the UE and the finger
Surely the context applied；
Address receiving unit, can correspond to communication interface, for receiving the updated new IP address of the UE,
The storage unit 110, is also used to establish the corresponding relationship of the former IP address and the new IP address；
The core net stores network element further include:
Second notification receiving unit accesses the access notifications of the target AF for obtaining the UE with new IP address；
First transmission unit 120 is specifically used for according to the corresponding relationship and the new IP address, by the institute of storage
State the context of specified application；It is sent to the target AF.
Optionally, the context of the specified application includes at least one of:
Business datum sends condition information；
Business datum receives condition information.
Optionally, the storage unit 110, specifically for the corresponding device identification for storing the UE, IP address, the finger
Surely the context of the application identities and the specified application applied.
The present embodiment also provides a kind of functional network element, and the functional network element is session management network element SMF, comprising:
Second transmission unit when the switching notice of the UPF for receiving user equipment UE access, stores net to core net
Member sends storage notice；Wherein, the storage notice, for triggering core net storage network element storage UE access originator application function net
The context of application is specified on first AF.
SMF described in the present embodiment includes the second transmission unit, and second transmission unit can correspond to communication interface, can use
It is notified in sending storage to core net storage network element.
In some embodiments, the SMF further includes storage unit, is connect with second transmission unit, and storage is
State the relevant informations such as the identification information of UE.For example, the application identities of the device identification of the UE, IP address and specified application are extremely
It is one of few.
Optionally, second transmission unit is also used to the new of the location information of the target UPF of the UE and the UE
At least one of IP address is sent to the core net storage network element；Wherein, the location information of the target UPF, is used for
Target AF is determined for core net storage network element；
The new IP address, for establishing the former IP address and new IP address of the UE for core net storage network element
Corresponding relationship, wherein the corresponding relationship, for triggering core net storage network element in conjunction with indicating the UE with new IP
When the access notifications of location access target AF, the context of storage is sent to target AF.
As shown in fig. 6, the present embodiment also provides a kind of functional network element, including, it is applied in target AF, comprising:
Receiving unit 210 specifies application for receiving from core net storage network element on user equipment (UE) access originator AF
Hereafter；
Response unit 220 responds the UE and accesses the specified application for the context based on the specified application
Access request.
The AF can be the application server or application server cluster that common carrier itself provides.
The receiving unit 210, can correspond to communication interface.
In embodiments of the present invention, the communication interface can be wireline interface or wireless interface, preferably wireless interface, institute
Stating wireless interface can be cable interface or fiber optic cable interface.
The receiving unit 210, can be above and below the specified application on core net storage network element reception UE access originator AF
Text.
The response unit 220, the communication interface that can correspond to processor and be connected to the processor.The processor
It may include central processing unit, microprocessor, digital signal processor, application processor, programmable array or specific integrated circuit
Deng.The processor can be by the computer executable instructions such as computer program, the context according to the specified application
The UE continues to provide the application service of the specified application, for example, responding the access request.
Optionally, the receiving unit 210 is also used to receive the access request that the UE accesses the specified application；
The response unit 220 is also used to based on the access request, and Xiang Suoshu core net storage network element carries described
The access notifications of the identification information of UE；Wherein, the identification information of the UE includes: the device identification of the UE and the IP of the UE
At least one of address；
The receiving unit 210 is also used to receive the institute that the core net storage network element is returned based on the access notifications
State the context of specified application.
A specific example is provided below in conjunction with above-mentioned any embodiment:
Example 1:
As shown in fig. 7, this example provides a kind of network architecture first, which can be the 5G network architecture, specifically may be used
Include:
Authentication management functional network element (Authentication Management Function, AMF), SMF, NEF, AF,
Access network element (Access Network, AN), UPF and data network (Data Network DN).As shown in fig. 7, AMF distinguishes
Connect with SMF, UE and AN, SMF with connect respectively with AMF and NEF, AF is linked into network by NEF, and AN and UPF foundation have company
It connects, and DN is connected to by UPF.Below in conjunction with the network architecture as shown in Figure 7, a kind of business continuity support method is provided, it can
Include:
The data channel that UE arrives source user veil first (S-AF) to source user veil first (S-UPF) is normally established, at this time UE
A is applied in access.
UE is moved, and triggering SMF carries out UPF switching.
SMF notifies NEF, stores the context using A of UE access.At this point, NEF is when the context of A is applied in storage
Storing data includes: UE ID, using the ID of A, UE IP address, using the context of A.
UE and network establish new PDU session.SMF reports the position of T-UPF to NEF simultaneously；
NEF is notified the UE and is used using A.NEF is notified UE and is used there are three types of the implementations using A:
(1) UE informs that NEF, (2) T-AF inform that NEF, (3) T-UPF know that UE is being accessed using A by DPI, then T-UPF reports SMF
And report NEF.
NEF obtains the position of T-AF by the position of analysis T-UPF.NEF is by the context and UE using A of storage
New IP address passes to and applies A on T-AF.At this point, the data of NEF storage include: UE ID, using the ID of A, the new IP of UE
Location.
Example 2:
As shown in figure 8, this example provides a kind of business continuance support method, comprising:
Step 1: since UE is mobile, SMF triggers UPF and carries out gravity treatment.
Source user face functional network element (S-PDU) session release timer is arranged in step 2:SMF, and passes to AMF.
Step 3:SMF notifies NEF, which will carry out gravity treatment, to trigger step 5.
S-PDU Session Timer is passed to UE by step 4:AMF.
Step 5:NEF is interacted with source application function network element (S-AF), and obtain the UE access on the AF applies A context.
Step 6:UE triggering is established from UE to RAN to the PDU session of target user face functional network element (T-UPF).
Step 7:SMF is by the location information of the T-UPF of selection, and the IP address informing NEF that the UE is new.NEF is according to T-
The location information of UPF judges the position of T-AF.
Step 8:NEF knows that UE is being accessed using A；The step 8 may include step 8a to step 8c at least within
One of:
Step 8a:UE notifies NEF, is accessing using A.
Step 8b: target user's functional network element (T-AF) reports NEF, says that some IP address is being accessed using A.NEF is logical
Overmatching IP address knows that the UE has started to continue access using A
Step 8c:T-UPF carries out DPI to the UE data flow, knows that it has just started to continue access using A.
Step 9:NEF is configured to T-AF using A context for the UE for what is stored before.
Step 10: network or UE triggering discharge the PDU session of UE to S-UPF.
Example 3:
In this example,
Certain application context on step S1 core net storage source AF, and the same application being allocated on target AF.The step
Rapid S1 can comprise the following steps that
Step S1.1: the trigger condition of the storage context is: when the user plane functions of core net switch, core net
Store the context of certain specified application；For example, core net stores a specific implementation of the context of certain specified application can include:
The open function of notification capabilities is stored the context of certain specified application by conversation management functional；
Step S1.2: the application can be identified with application ID；
Step S1.3: the context of application includes but is not limited to: the packet sequence number of context；
Step S2: core net is triggered by certain conditions, certain is configured to the application on target AF using upper context.Institute
State step S2 can include:
Step S2.1: certain trigger conditions include: (1) UE notice core net, certain application is used；(2) target AF
Inform core net, UE is accessing certain application；(3) core net knows UE by detecting (such as 5G user face passes through DPI)
Access certain application.For example, target AF informs that the address core net UEIP is accessing certain application.The open function of core net ability is logical
The ID and IP address relationship of overmatching UE, confirms that the UE is accessing certain application, so that triggering the open function of core net ability will
Certain application context of storage is allocated to the same application on target AF.
For example, the open function of core net ability is by way of the ID and IP address relationship that match UE can include: ability is opened
Playing function by record the UE ID and existing IP address, it is thus understood that target AF provide certain IP address be the UE, thus with
The application context that UEID is stored before retrieving.
In another example core network user face knows that UE is accessing certain application by DPI, then user face announcement session manages function
Can, the open function of conversation management functional notification capabilities.
Step S3: the open function of core net ability can select suitable target AF according to the position in target user face.
Step S4: the open function of core net ability can record UEID, the corresponding relationship of the address UEIP and application ID, to prop up
UE is held when replacing IP address, guaranteeing business continuity.
It is focused in the embodiment of the present invention under UE situation of movement, how to ensure low time delay business continuance problem.Main side
Method is that core net function stores the application context in local session anchor point handoff procedure, from local application server.Work as net
When network or UE create local session connection, by judging local session anchor point position, suitable local application server is selected, and
The application context stored before is configured on new local application server, to ensure low time delay business in business side
Continuity.
The application context of storage AF is assisted by core net, on the one hand, core net understands the mobility of UE, i.e. core
Net can accurate judgement UE access purpose user face position, so that the purpose AF of UE access is obtained, thus assistance application context
From source, AF is configured to purpose AF.
On the other hand, the ID of the recordable UE of core net, the relationship of the purpose IP address of the source IP address and UE of UE, therefore
In the case that UE replaces IP address, it still is able to the application context stored when accessing application before accurately finding the UE, thus
Ensure the business experience of UE.
As shown in figure 9, the present embodiment also provides a kind of functional network element, comprising: transceiver 330, memory 310, processor
320 and the computer program that is stored on memory 310 and is executed by the processor 320；
The processor 320 is connect with the memory 310 and transceiver 330 respectively, for by executing the calculating
Machine program 340, controls information storage and the information transmit-receive of the transceiver 330 of the memory 310, and realizes above-mentioned any
The business continuance support method that one or more technical solutions provide, for example, executing Fig. 1 to Fig. 4 and business shown in Fig. 8 company
One or more of continuous property support method.In another example the processor 320 can be by the execution of computer program, before realization
One or more of the business continuance support method being applied in core net storage network element is stated, or is applied to session management function
One or more of the business continuance support method of energy network element, or applied to the business continuance support method in target AF
One or more.
Transceiver 330 described in the present embodiment can correspond to network interface, the network interface can for cable interface, can be with
Data interaction is carried out for other network elements.
The memory 310 can include: various types of storage mediums can be used for data storage.In the present embodiment,
The storage medium at least partially non-volatile memory medium that the memory 310 includes, can be used for storing the computer
Program 340.
The processor 320 can include: central processing unit, microprocessor, digital signal processor, application processor, specially
With integrated circuit or programmable array etc., it can be used for realizing the formation of PNF packet by the execution of computer program 340.
In the present embodiment, the processor 320 can be by the equipment internal bus such as IC bus, with the transceiver
330 and memory 310 connect.
The embodiment of the present invention also provides a kind of computer storage medium, and the computer storage medium is stored with computer journey
Sequence, after the computer program is executed by processor, and the business for realizing that above-mentioned any one or more technical solutions provide connects
Continuous property support method, for example, executing one or more of Fig. 1 to Fig. 4 and business continuance support method shown in Fig. 8.Again
For example, the processor 320 can realize business of the aforementioned applications in core net storage network element by the execution of computer program
One or more of continuity support method, or applied in the business continuance support method of conversation management functional network element
One or more, or the one or more applied to the business continuance support method in target AF.
Computer storage medium provided in an embodiment of the present invention include: movable storage device, read-only memory (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. it is various
It can store the medium of program code.It is chosen as, the computer storage medium can be non-moment storage medium.Here non-wink
Between storage medium be properly termed as non-volatile memory medium again.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.Apparatus embodiments described above are merely indicative, for example, the division of the unit, only
A kind of logical function partition, there may be another division manner in actual implementation, such as: multiple units or components can combine, or
It is desirably integrated into another system, or some features can be ignored or not executed.In addition, shown or discussed each composition portion
Mutual coupling or direct-coupling or communication connection is divided to can be through some interfaces, the INDIRECT COUPLING of equipment or unit
Or communication connection, it can be electrical, mechanical or other forms.
Above-mentioned unit as illustrated by the separation member, which can be or may not be, to be physically separated, aobvious as unit
The component shown can be or may not be physical unit, it can and it is in one place, it may be distributed over multiple network lists
In member；Some or all of units can be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a processing module, it can also
To be each unit individually as a unit, can also be integrated in one unit with two or more units；It is above-mentioned
Integrated unit both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned include: movable storage device, it is read-only
Memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or
The various media that can store program code such as person's CD.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (17)
1. a kind of business continuance support method, which is characterized in that be applied to core net and store network element, comprising:
Store the context of the specified application on the source application function network element AF of user equipment (UE) access；
The context of the specified application is sent to target AF, wherein the context of the specified application, for supplying the mesh
Mark AF continues as the UE and provides the application service of the specified application.
2. the method according to claim 1, wherein
The context of specified application on the source AF of the storage user equipment (UE) access, comprising:
Receive the storage notice sent when the user plane functions network element UPF switching of the UE access；
It is notified according to the storage, the context of the specified application on the source AF of storage user equipment (UE) access.
3. according to the method described in claim 2, it is characterized in that,
The storage notice sent when the user plane functions network element UPF switching for receiving the UE access, comprising:
Receive the storage notice that conversation management functional network element SMF is sent when receiving the switching notice that UPF is sent.
4. method according to claim 1,2 or 3, which is characterized in that
The method also includes:
Receive the access notifications of the specified application of the UE access target AF, wherein the access notifications can be the UE, the mesh
It marks AF or detects what network element was sent；
The context by the specified application is sent to target AF, comprising:
After receiving the access notifications, the context of the specified application is sent to the target AF.
5. method according to claim 1,2 or 3, which is characterized in that
The method also includes:
The corresponding former network protocol IP address for storing the UE and the context of the specified application；
The updated new IP address of the UE is received,
According to the device identification of UE, the corresponding relationship of the former IP address and the new IP address is established；
The method also includes:
Obtain the access notifications that the UE accesses the target AF with new IP address；
The context by the specified application is sent to target AF, comprising:
According to the corresponding relationship and the new IP address, the context of the specified application of storage is sent to the target
AF。
6. method according to claim 1,2 or 3, which is characterized in that
The context of the specified application includes at least one of:
The business datum of the specified application sends condition information；
The business datum of the specified application receives condition information.
7. method according to claim 1,2 or 3, which is characterized in that
The context of specified application on the source AF of the storage user equipment (UE) access, comprising:
Store the context of the device identification of the UE, IP address, the application identities of the specified application and the specified application.
8. method according to claim 1,2 or 3, which is characterized in that
The core net storage network element is the open functional network element NEF of network capabilities.
9. a kind of business continuance support method, which is characterized in that be applied to session management network element SMF, comprising:
When receiving the switching notice of user plane functions network element UPF of user equipment UE access, to core net storage network element hair
Storage is sent to notify；Wherein, the storage notice, for triggering core net storage network element storage UE access originator application function network element AF
The context of upper specified application.
10. according to the method described in claim 9, it is characterized in that,
The method also includes:
By at least one of the new IP address of the location information of the target UPF of the UE and the UE, it is sent to the core
Heart net stores network element；
Wherein, the location information of the target UPF, for determining target AF for core net storage network element；
The new IP address, for establishing the former IP address of the UE and pair of new IP address for core net storage network element
It should be related to；Wherein, the corresponding relationship is accessed for triggering the core net storage network element in the reception UE with new IP address
The context of storage is sent when the access notifications of target AF to target AF.
11. a kind of business continuance support method, including, it is applied in target application functional network element AF, comprising:
The context that application is specified on user equipment (UE) access originator AF is received from core net storage network element；
Based on the context of the specified application, the access request that the UE accesses the specified application is responded.
12. according to the method for claim 11, which is characterized in that
The method also includes:
Receive the access request that the UE accesses the specified application；
Based on the access request, the access for the identification information that the storage network element transmission of Xiang Suoshu core net carries the UE is logical
Know；Wherein, the identification information of the UE includes: at least one of the device identification of the UE and the IP address of the UE；
The context that the specified application of user equipment (UE) access is received from core net storage network element, comprising:
Receive the context for the specified application that the core net storage network element is returned based on the access notifications.
13. a kind of functional network element, which is characterized in that the functional network element is that core net stores network element, comprising:
Storage unit, the context of the specified application on the AF of source for storing user equipment (UE) access；
First transmission unit, for the context of the specified application to be sent to target AF, wherein the specified application it is upper
Hereafter, the application service of the specified application is provided for continuing as the AF for the target AF.
14. a kind of functional network element, which is characterized in that the functional network element is session management network element SMF, comprising:
Second transmission unit, for when receiving the switching notice of user plane functions network element UPF of user equipment UE access to
Core net stores network element and sends storage notice；Wherein, the storage notice, for triggering core net storage network element storage UE access
The context of application is specified on the application function network element AF of source.
15. a kind of functional network element, including, it is applied in target application functional network element AF, comprising:
Receiving unit, for receiving the context for specifying application on user equipment (UE) access originator AF from core net storage network element；
Response unit responds the UE and accesses the access of the specified application and ask for the context based on the specified application
It asks.
16. a kind of functional network element, comprising: transceiver, memory, processor and storage are held on a memory and by the processor
Capable computer program；
The processor is connect with the transceiver and memory respectively, for executing the computer program, to realize right
It is required that any one of 1 to the 11 business continuance support method provided.
17. a kind of computer storage medium, the computer storage medium is stored with computer program；The computer program quilt
After execution, the business continuance support method that any one of claim 1 to 11 provides can be realized.
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