CN108934007A - A kind of policy control method, PCF and the SMF of UPF gravity treatment - Google Patents
A kind of policy control method, PCF and the SMF of UPF gravity treatment Download PDFInfo
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Abstract
The embodiment of the invention discloses policy control method, PCF and the SMF of a kind of UPF gravity treatment, the method includes：The first PDU session is obtained from SMF, and the validity period of the event of anchor point gravity treatment and the first IP address of the corresponding UE of the first UPF and the second IP address of the corresponding UE of the 2nd UPF occurs；The validity period of first IP address and second IP address are sent to the corresponding AF of each target application.
Description
Technical field
The present invention relates to mobile communication technology more particularly to a kind of policy control sides of user plane functions entity UPF gravity treatment
Method, policy control functions entity PCF and conversation management functional entity SMF.
Background technique
Industry is studying Next-Generation Wireless Communication Systems, i.e. the 5th third-generation mobile communication technology (5th- at present
Generation, abbreviation 5G).Fig. 1 is that the composed structure of the existing 5G network based on single protocol Data Unit PDU session is illustrated
Figure.As shown in Figure 1,5G network includes following functions：Connection management function：It is mainly responsible for the interface-free resources tune of accessing terminal to network
The connection management spent and eated dishes without rice or wine；Authentication service function：It is mainly responsible for the access to user equipment (User Equipment, UE)
It is authenticated and is authorized；Uniform data management (Unified Data Manager, UDM) function：It is mainly responsible for and saves user's
Subscription data；Access and mobile management function to ps domain (Access and Mobility Management Function, AMF)：It is main
It is responsible for access authentication, authorization and mobile management；Conversation management functional (Session Management Function,
SMF), it is mainly responsible for session management, IP address distribution；User plane functions (User Plane Function, UPF), are mainly responsible for
Routing, the forwarding of protocol Data Unit (Protocol Data Unit, PDU), and to the strategy execution of packet data.Strategy
Control function (Policy Control Function, PCF), is mainly responsible for strategic decision-making；Application function (Application
Function, AF), it is mainly responsible for and provides user's business information for accessing business to PCF, the strategic decision-making for PCF.
In addition, defined in 5G network session and business continuance (Session and Service Continuity,
SSC Three models)：1), mode (Mode) 1：How the access net no matter UE is used changes, and UPF is remained unchanged；2), mode
2：UE without departing from UPF coverage when, UPF is remained unchanged；When UE leaves the coverage of UPF, one is suitable for UE and works as
The different UPF of preceding access net attachment point will be used to service the UE；3), mode 3：UE is allowed to before the first PDU session termination,
Newly-built one is arrived the PDU session of the same data network, and network selects the 2nd UPF of a suitable UE.At this point, UE can be with
It will be using the first UPF of release after moving to the 2nd UPF from the first UPF；Alternatively, UE waits the application knot being bundled on the first UPF
The first UPF is discharged after beam.
Fig. 2 is the composed structure schematic diagram of the existing 5G network based on more ownership (Multi-Homed) PDU sessions.Such as Fig. 2
Shown, when UE occurs mobile, network introduces bifurcation (Branching point) and is divided in the user face link of UE
With a new UPF, i.e. second user face functional entity (the 2nd UPF), while network also can be to UE with distributing another IP
Location.Up direction, bifurcation give UE to second user face functional entity (the 2nd UPF) using the data forwarding of new IP address,
The first user plane functions entity (the first UPF) is still transmitted to using the data of old IP address.In down direction, bifurcation will
It is forwarded after the convergence of the data of the first user plane functions entity (the first UPF) and second user face functional entity (the 2nd UPF)
To base station.In actual deployment, bifurcation may be integrated with second user face functional entity 2 (the 2nd UPF).
Fig. 3 is the implementation process schematic diagram of the policy control method of UPF gravity treatment in the prior art.As shown in figure 3, UPF weight
The policy control method of choosing may comprise steps of：
The first PDU session is established between step 301, UE and the first UPF.
When step 302, SMF meet pre-set trigger condition, SMF executes Multi-Homed decision.
Step 303, SMF send NAS message notice to UE.
In this step, SMF notifies the first PDU session of UE that will be released after a period of time (Time1), while SMF is logical
Know that the 2nd PDU session for arriving the same outer data network DN (Data Network) is established in UE request.
Step 304, UE send twoth PDU session of the message to establish between the 2nd UPF to SMF.
The first PDU session between step 305, release UE and the first UPF.
In the implementation of the present invention, at least there are the following problems in the prior art for inventor's discovery：
It is to be decided whether to carry out UPF gravity treatment by SMF in the policy control method of existing UPF gravity treatment, although when SMF is full
When the pre-set trigger condition of foot, can according to the request of third-party application by the third-party application from the first UPF gravity treatment to
2nd UPF, but since SMF can only carry out UPF gravity treatment for one of target application, UE is being accessed
Other target applications, SMF do not have method to allow these target applications from the first UPF gravity treatment into the 2nd UPF, thus can be to UE
The usage experience of other target applications accessed has an impact.
Summary of the invention
To solve existing technical problem, an embodiment of the present invention is intended to provide a kind of policy control sides of UPF gravity treatment
Method, PCF and SMF, after UPF gravity treatment being triggered because of target application, other target applications UPF that notice UE is being accessed
The event of gravity treatment will not be to UE just so that other target applications carry out the gravity treatment of application layer within the validity period of the first IP address
It is had an impact in the usage experience of other target applications of access.
In order to achieve the above objectives, the technical solution of the embodiment of the present invention is realized in：
The embodiment of the invention provides a kind of policy control method of UPF gravity treatment, the method includes：
The event notice and the corresponding user equipment (UE) of the first UPF that anchor point gravity treatment occurs for the first PDU session are obtained from SMF
The first IP address validity period and the corresponding UE of the 2nd UPF the second IP address；
The validity period of first IP address and second IP address are sent to the corresponding AF of each target application.
In the above-described embodiments, it is described from SMF obtain the first PDU session occur the event notice of anchor point gravity treatment with
And the first the corresponding UE of UPF the validity period of the first IP address and the second IP address of the corresponding UE of the 2nd UPF before, the side
Method further includes：
In the establishment process of the first PDU session, first IP address is obtained from the SMF.
In the above-described embodiments, the event notice and that anchor point gravity treatment occurs for the first PDU session is obtained from SMF described
Before the validity period of the first IP address of the corresponding UE of one UPF and the second IP address of the corresponding UE of the 2nd UPF, the method is also
Including：
Receive corresponding first business information of each target application that each AF is provided；
Corresponding first policing rule of each target application is formulated according to corresponding first business information of each target application；
The corresponding policing rule of each target application is supplied to the SMF.
In the above-described embodiments, the validity period of first IP address and second IP address are sent to respectively described
After the corresponding AF of a target application, the method also includes：
Receive corresponding second business information of each target application that each AF is provided；
Corresponding second policing rule of each target application is formulated according to corresponding second business information of each target application；
Corresponding second policing rule of each target application is supplied to the SMF.
In the above-described embodiments, the validity period of first IP address and second IP address are sent to respectively described
After the corresponding AF of a target application, the method also includes：
Receive the address for the corresponding destination application server of each target application that each AF is provided；
The address of the corresponding destination application server of each target application is supplied to the SMF.
The embodiment of the invention also provides a kind of policy control method of UPF gravity treatment, the method includes：
When meeting pre-set trigger condition, anchor point gravity treatment is executed to the first PDU session；
The validity period and second of the first IP address of the event notice and the corresponding UE of the first UPF of anchor point gravity treatment will occur
The second IP address of the corresponding UE of UPF is notified to PCF.
In the above-described embodiments, before the execution anchor point gravity treatment to the first PDU session, the method also includes：
In the establishment process of the first PDU session, the first UPF is selected for the first PDU session, distributes institute
State the first IP address；
First IP address is notified to the PCF.
In the above-described embodiments, the trigger condition includes at least one of：
Receive the flow guiding request of any one target application transmission；
Alternatively, the network load of the first UPF is more than pre-set threshold value；
Alternatively, receiving reporting for the user face detection information that the first UPF is sent.
In the above-described embodiments, after the execution anchor point gravity treatment to the first UPF, the method also includes：
The first UPF session is changed to more ownership Multi-Homing PDU sessions；
The 2nd UPF is selected for the Multi-Homing PDU session, and distributes second IP address.
In the above-described embodiments, after the execution anchor point gravity treatment to the first PDU session, the method also includes：
Notify the first PDU session described in the UE that will be released after the validity period, so that UE request establishes one
A 2nd PDU session；Wherein, the first PDU session outer data network DN corresponding with the 2nd PDU session is identical；
Receive the 2nd PDU session that the UE is sent establishes request message, selects institute for the 2nd PDU session
The 2nd UPF is stated, and distributes second IP address.
In the above-described embodiments, before the execution anchor point gravity treatment to the first PDU session, the method also includes：
Receive corresponding first policing rule of each target application that the PCF is formulated；
Corresponding first interblock interference of each target application is formulated according to corresponding first policing rule of each target application
Rule；
The corresponding first interblock interference rule of each target application is supplied to the 2nd UPF.
In the above-described embodiments, it is described by occur anchor point gravity treatment event notice and the corresponding UE of the first UPF the
The second IP address of the validity period of one IP address and the corresponding UE of the 2nd UPF notify that the method is also wrapped to after the PCF
It includes：
Receive corresponding second policing rule of each target application that the PCF is formulated；
The corresponding second packet detection of each target application is formulated according to corresponding second policing rule of each target application
Rule；
The corresponding interblock interference rule of each target application is supplied to the 2nd UPF.
In the above-described embodiments, before the execution anchor point gravity treatment to the first PDU session, the method also includes：
Receive the address for the corresponding source application server of each target application that the PCF is provided；
The address of the corresponding source application server of each target application is supplied to the UE.
In the above-described embodiments, in the event notice and the corresponding UE of the first UPF that anchor point gravity treatment will occur
The validity period of the first IP address and the second IP address of the corresponding UE of the 2nd UPF notify that the method is also wrapped to after PCF
It includes：
Receive the address for the corresponding destination application server of each target application that the PCF is provided；
The address of the corresponding destination application server of each target application is supplied to the UE.
The embodiment of the invention also provides a kind of PCF, the PCF includes：Acquiring unit and transmission unit；Wherein,
The acquiring unit, for obtaining the event notice and first that anchor point gravity treatment occurs for the first PDU session from SMF
The validity period of the first IP address of the corresponding UE of UPF and the second IP address of the corresponding UE of the 2nd UPF；
First IP address and validity period and second IP address are sent to the corresponding AF of each target application.
In the above-described embodiments, the acquiring unit is also used in the establishment process of the first PDU session, from institute
It states SMF and obtains first IP address.
In the above-described embodiments, the PCF further includes：Policing rule formulates unit, for receiving each of each AF offer
Corresponding first business information of a target application；Each target is formulated according to corresponding first business information of each target application to answer
With corresponding first policing rule；
The transmission unit is also used to the corresponding policing rule of each target application being supplied to the SMF.
In the above-described embodiments, the policing rule formulates unit, is also used to receive each target that each AF is provided and answers
With corresponding second business information；It is corresponding that each target application is formulated according to corresponding second business information of each target application
Second policing rule；
The transmission unit is also used to corresponding second policing rule of each target application being supplied to the SMF.
In the above-described embodiments, it is corresponding to be also used to receive each target application that each AF is provided for the acquiring unit
The address of destination application server；
The transmission unit is also used to for being supplied to the address of the corresponding destination application server of each target application described
SMF。
The embodiment of the invention also provides a kind of SMF, the SMF includes：Anchor point gravity treatment unit and notification unit；Wherein,
The anchor point gravity treatment unit, for executing anchor point to the first PDU session when meeting pre-set trigger condition
Gravity treatment；
The notification unit, the event for anchor point gravity treatment will to occur notifies and the first IP of the corresponding UE of the first UPF
The second IP address of the validity period of address and the corresponding UE of the 2nd UPF are notified to PCF.
In the above-described embodiments, the SMF further includes：Allocation unit, for the foundation in the first PDU session
In the process, the first UPF is selected for the first PDU session, distributes first IP address；
The notification unit is also used to first IP address notifying the PCF.
In the above-described embodiments, the trigger condition includes at least one of：
Receive the flow guiding request of any one target application transmission；
Alternatively, the network load of the first UPF is more than pre-set threshold value；
Alternatively, receiving reporting for the user face detection information that the first UPF is sent.
In the above-described embodiments, the allocation unit is also used to for the first UPF session being changed to belong to more
Multi-Homing PDU session；The 2nd UPF is selected for the Multi-Homing PDU session, and distributes described second
IP address.
In the above-described embodiments, the notification unit is also used to notify the first PDU session described in the UE described effective
It will be released after phase, so that a 2nd PDU session is established in UE request；Wherein, the first PDU session and described second
The corresponding outer data network DN of PDU session is identical；
The allocation unit, be also used to receive the 2nd PDU session that the UE is sent establishes request message,
The 2nd UPF is selected for the 2nd PDU session, and distributes second IP address.
In the above-described embodiments, the SMF further includes：Detected rule formulates unit, for receiving each of the PCF formulation
Corresponding first policing rule of a target application；Each target is formulated according to corresponding first policing rule of each target application to answer
With corresponding first interblock interference rule；
The notification unit is also used to the corresponding first interblock interference rule of each target application being supplied to described second
UPF。
In the above-described embodiments, the detected rule formulates unit, is also used to receive each target that the PCF is formulated and answers
With corresponding second policing rule；It is corresponding that each target application is formulated according to corresponding second policing rule of each target application
Second packet detected rule；
The notification unit is also used to the corresponding interblock interference rule of each target application being supplied to described second
UPF。
In the above-described embodiments, the anchor point gravity treatment unit is also used to receive each target application pair that the PCF is provided
The address for the source application server answered；
The notification unit is also used to for being supplied to the address of the corresponding source application server of each target application described
UE。
In the above-described embodiments, the anchor point gravity treatment unit is also used to receive each target application pair that the PCF is provided
The address for the destination application server answered；
The notification unit is also used to for being supplied to the address of the corresponding destination application server of each target application described
UE。
It can be seen that PCF first can obtain the first PDU session from SMF and anchor occurs in the technical solution of the embodiment of the present invention
The of validity period of first IP address of the event notice and corresponding UE of the first UPF of point gravity treatment and the corresponding UE of the 2nd UPF
Two IP address；Then the validity period of the first IP address and the second IP address, it is corresponding can be sent to each target application by PCF
AF.That is, in the technical solution of the embodiment of the present invention, PCF can by the validity period of the corresponding IP address of the first UPF and
The IP address of 2nd UPF notifies AF corresponding to each target application, so that each target application can be in the first IP address
The preceding gravity treatment for executing application layer, i.e., carry out business access using the second IP address in validity period, and each target application can choose
One application server closer to the 2nd UPF continues offer business.And in the prior art, SMF can only be directed to one of mesh
Mark application carries out UPF gravity treatment.Therefore, compared to the prior art, the policy control side for the UPF gravity treatment that the embodiment of the present invention proposes
Method, PCF and SMF, after UPF gravity treatment being triggered because of target application, other target applications UPF that notice UE is being accessed
The event of gravity treatment will not be to UE just so that other target applications carry out the gravity treatment of application layer within the validity period of the first IP address
It is had an impact in the usage experience of other target applications of access；Also, the technical solution of the embodiment of the present invention realizes simple side
Just, convenient for universal, use scope is wider.
Detailed description of the invention
Fig. 1 is the composed structure schematic diagram of the existing 5G network based on single PDU session；
Fig. 2 is the composed structure schematic diagram of the existing 5G network based on more ownership PDU sessions；
Fig. 3 is the implementation process schematic diagram of the policy control method of UPF gravity treatment in the prior art；
Fig. 4 is the first implementation flow schematic diagram of the policy control method of UPF gravity treatment in the embodiment of the present invention；
Fig. 5 is the second implementation process schematic diagram of the policy control method of UPF gravity treatment in the embodiment of the present invention；
Fig. 6 is the third implementation process schematic diagram of the policy control method of UPF gravity treatment in the embodiment of the present invention；
Fig. 7 is the 4th implementation process schematic diagram of the policy control method of UPF gravity treatment in the embodiment of the present invention；
Fig. 8 is the first composed structure schematic diagram of PCF in the embodiment of the present invention；
Fig. 9 is the second composed structure schematic diagram of PCF in the embodiment of the present invention；
Figure 10 is the first composed structure schematic diagram of SMF in the embodiment of the present invention；
Figure 11 is the second composed structure schematic diagram of SMF in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
In a specific embodiment of the present invention, Fig. 4 is first of the policy control method of UPF gravity treatment in the embodiment of the present invention
Implementation process schematic diagram.As shown in figure 4, the policy control method of UPF gravity treatment may comprise steps of：
Step 401 obtains anchor point gravity treatment occurs for the first PDU session event notice and the corresponding UE of the first UPF from SMF
The first IP address validity period and the corresponding UE of the 2nd UPF the second IP address.
In a specific embodiment of the present invention, PCF obtains the event notice that anchor point gravity treatment occurs for the first PDU session from SMF,
The validity period of the first IP address of the corresponding UE of first UPF and the second IP address of the corresponding UE of the 2nd UPF.Preferably, at this
In the specific embodiment of invention, PCF is obtaining the event notice and the first UPF that anchor point gravity treatment occurs for the first PDU session from SMF
Before the validity period of the first IP address of corresponding UE and the second IP address of the corresponding UE of the 2nd UPF, PCF can be first
In the establishment process of PDU session, the first IP address is obtained from SMF.Preferably, in a specific embodiment of the present invention, PCF from
PCF is obtaining the first PDU session the event notice of anchor point gravity treatment and the first IP of the corresponding UE of the first UPF occurs from SMF
Before the second IP address of the validity period of location and the corresponding UE of the 2nd UPF, PCF can also receive each target that each AF is provided
Using corresponding first business information；It is corresponding that each target application is formulated according to corresponding first business information of each target application
The first policing rule；The corresponding policing rule of each target application is supplied to SMF.
The validity period of first IP address and the second IP address are sent to the corresponding AF of each target application by step 402.
In a specific embodiment of the present invention, the validity period of the first IP address and the second IP address are sent to each by PCF
The corresponding AF of target application.Preferably, in a specific embodiment of the present invention, PCF is by the validity period of the first IP address and
Two IP address are sent to after the corresponding AF of each target application, and PCF can also receive each target application that each AF is provided
Corresponding second business information；Each target application corresponding the is formulated according to corresponding second business information of each target application
Two policing rules；Corresponding second policing rule of each target application is supplied to SMF.Preferably, in specific reality of the invention
Apply in example, PCF after the validity period of the first IP address and the second IP address are sent to the corresponding AF of each target application,
PCF can also receive the address for the corresponding destination application server of each target application that each AF is provided；Each target is answered
SMF is supplied to the address of corresponding destination application server.
First from the first PDU session anchor point can occur for the UPF reselection strategies control method that the embodiment of the present invention proposes, PCF
The event of gravity treatment notify and the validity period of the first IP address of the corresponding UE of the first UPF and the corresponding UE of the 2nd UPF second
IP address；Then the validity period of the first IP address and the second IP address can be sent to the corresponding AF of each target application by PCF.
That is, PCF can be by the validity period of the corresponding IP address of the first UPF and in the technical solution of the embodiment of the present invention
The IP address of two UPF notifies AF corresponding to the first PDU session, so that each target application can be in the effective of the first IP address
The preceding gravity treatment for executing application layer, i.e., carry out business access using the second IP address in phase, and each target application can choose one
Application server closer to the 2nd UPF continues offer business.And in the prior art, SMF can only be answered for one of target
With carrying out UPF gravity treatment.Therefore, compared to the prior art, the policy control method for the UPF gravity treatment that the embodiment of the present invention proposes, can
Because the event of other target applications UPF gravity treatment is notified, so that other targets are answered after a target application triggering UPF gravity treatment
The gravity treatment that application layer is carried out within the validity period of the first IP address, will not be to the use for other target applications that UE is being accessed
Experience has an impact；Also, the technical solution realization of the embodiment of the present invention is simple and convenient, and convenient for universal, use scope is wider.
Fig. 5 is the second implementation process schematic diagram of the policy control method of UPF gravity treatment in the embodiment of the present invention.Such as Fig. 5 institute
Show, the policy control method of UPF gravity treatment may comprise steps of：
Step 501, when meeting pre-set trigger condition, to the first PDU session execute anchor point gravity treatment.
In a specific embodiment of the present invention, when meeting pre-set trigger condition, SMF holds the first PDU session
Row anchor point gravity treatment.Preferably, in a specific embodiment of the present invention, SMF before executing anchor point gravity treatment to the first PDU session,
SMF can be in the establishment process of the first PDU session, and SMF is that the first PDU session selects the first UPF, with distributing the first IP
Location；First IP address is notified to PCF.Preferably, in a specific embodiment of the present invention, trigger condition include at least it is following its
One of：SMF receives the flow guiding request of any one target application transmission；Alternatively, the network load of the first UPF is more than
Pre-set threshold value；Alternatively, SMF receives reporting for the user face detection information of the first UPF transmission.Preferably, at this
In the specific embodiment of invention, after executing anchor point gravity treatment to the first UPF, SMF can also change the first UPF session SMF
To belong to Multi-Homing PDU session more；The 2nd UPF is selected for Multi-Homing PDU session, and with distributing the 2nd IP
Location.Preferably, in a specific embodiment of the present invention, for SMF after executing anchor point gravity treatment to the first PDU session, SMF can be with
Notice the first PDU session of UE will be released after validity period, so that a 2nd PDU session is established in UE request；Wherein, first
PDU session outer data network DN corresponding with the 2nd PDU session is identical；SMF receives the foundation for the 2nd PDU session that UE is sent
Request message selects the 2nd UPF for the 2nd PDU session, and distributes the second IP address.Preferably, in specific implementation of the invention
In example, for SMF before executing anchor point gravity treatment to the first PDU session, SMF can also receive each target application pair of PCF formulation
The first policing rule answered；Each target application corresponding first is formulated according to corresponding first policing rule of each target application
Interblock interference rule；The corresponding first interblock interference rule of each target application is supplied to the 2nd UPF.Preferably, in this hair
In bright specific embodiment, for SMF before executing anchor point gravity treatment to the first PDU session, SMF can also receive each of PCF offer
The address of the corresponding source application server of a target application；The address of the corresponding source application server of each target application is provided
To UE.
Step 502, will occur anchor point gravity treatment event notice and the corresponding UE of the first UPF the first IP address it is effective
The second IP address of phase and the corresponding UE of the 2nd UPF are notified to PCF.
In a specific embodiment of the present invention, the event notice and the corresponding UE of the first UPF of anchor point gravity treatment will occur for SMF
The validity period of the first IP address and the second IP address of the corresponding UE of the 2nd UPF notify to PCF.Preferably, of the invention
In specific embodiment, SMF has in the first IP address of the event notice and the corresponding UE of the first UPF that will occur anchor point gravity treatment
The second IP address of effect phase and the corresponding UE of the 2nd UPF notify that SMF can also receive each target of PCF formulation to after PCF
Using corresponding second policing rule；It is corresponding that each target application is formulated according to corresponding second policing rule of each target application
Second packet detected rule；The corresponding interblock interference rule of each target application is supplied to the 2nd UPF.Preferably,
In specific embodiments of the present invention, first IP of the SMF in event notice and the corresponding UE of the first UPF that anchor point gravity treatment will occur
The second IP address of the validity period of address and the corresponding UE of the 2nd UPF notify that SMF can also receive PCF offer to after PCF
The address of the corresponding destination application server of each target application；By the ground of the corresponding destination application server of each target application
Location is supplied to UE.
The UPF reselection strategies control method that the embodiment of the present invention proposes, when meeting pre-set trigger condition, SMF
Anchor point gravity treatment can be executed to the first PDU session；Then the event notice and the first UPF of anchor point gravity treatment can will occur for SMF
The validity period of the first IP address of corresponding UE and the second IP address of the corresponding UE of the 2nd UPF are notified to PCF.That is,
In the technical solution of the embodiment of the present invention, the event notice and the corresponding UE of the first UPF of anchor point gravity treatment can will occur for SMF
The validity period of the first IP address and the second IP address of the corresponding UE of the 2nd UPF notify that then PCF can be by first to PCF
The validity period of the corresponding IP address of UPF and the IP address of the 2nd UPF notify AF corresponding to each target application, so that each mesh
Mark application can within the validity period of the first IP address it is preceding execute application layer gravity treatment, i.e., using the second IP address carry out business visit
It asks, each target application can choose an application server closer to the 2nd UPF and continue offer business.And the prior art
In, SMF can only carry out UPF gravity treatment for one of target application.Therefore, compared to the prior art, the embodiment of the present invention mentions
The policy control method of UPF gravity treatment out, after can triggering UPF gravity treatment because of a target application, notice UE is being accessed
The event of other target applications UPF gravity treatment, so that other target applications carry out application layer within the validity period of the first IP address
Gravity treatment will not have an impact the usage experience for other target applications that UE is being accessed；Also, the technology of the embodiment of the present invention
Scheme realization is simple and convenient, and convenient for universal, use scope is wider.
Fig. 6 is the third implementation process schematic diagram of the policy control method of UPF gravity treatment in the embodiment of the present invention.Such as Fig. 6 institute
Show, the policy control method of UPF gravity treatment may comprise steps of：
Step 601, UE initiate attachment flow to AMF by base station, complete network registry of the UE in AMF.
Step 602, UE initiate the PDU session establishment request message of the first PDU session to AMF；Wherein, the PDU session
The first PDU session identification, request type, N1 session management information (SM Information) can be carried by establishing in request message
(Data Network Name, DN Name) is known with data network mark.
Step 603, AMF send session management request message to selected SMF；Wherein, the session management request disappears
User identifier can be carried in breath；DN Name, the first DPU session identification, customer position information, SSC Mode and N1 session
Management information (N1 SM Information).
Step 604, SMF select a UPF as anchor point UPF (being expressed as the first UPF) for the first PDU session, and are UE
Distribute the corresponding IP address of anchor point UPF (being IPv6 prefix1 here, be expressed as the first IP address).SMF sends the to PCF
Corresponding first policy request message of one PDU session；Wherein, can be carried in first policy request message user identifier,
DN Name, SSC Mode and IPv6 prefix1.
In this step, SMF is before sending the corresponding policy request message of the first PDU session to PCF, and SMF can be with
It is interacted with uniform data management UDM, obtains the signing information of user, and verify to UE.In addition, SMF can also be on PCF
UE is reported to support the ability instruction of Multi-Homed.
Step 605, PCF return to the first tactful confirmation message to SMF；It wherein, can be in the described first tactful confirmation message
Carry default policy.
In a specific embodiment of the present invention, the default policy may include：It polymerize maximum rate (Aggregate
Maximum Bit Rat, AMBR), qos parameter and event trigger event trigger.
Step 606, SMF send N4 session establishment request message to the first UPF；First UPF returns to N4 session establishment to SMF
Confirmation message；Wherein, interblock interference rule can be carried in the N4 session establishment request message.
In a specific embodiment of the present invention, the first UPF receive SMF transmission N4 session establishment request message it
Afterwards, the first UPF can be regular with the interblock interference carried in the installed/activated N4 session establishment request message, and returns to N4 to SMF
Session establishment confirmation message.If the first UPF distributes CN tunnel information, the N4 session establishment confirmation message that the first UPF is returned to SMF
In can also carry the CN tunnel information.
Step 607, SMF send session management response message to AMF；It wherein, can be in the session management response message
Carry N2 session management information (N2 SM Information) and N1 session management information (N1 SM Information).
Step 608, AMF send N2 PDU conversation request message to base station；Wherein, in the N2 PDU conversation request message
N2 session management information and NAS information can be carried.
Step 609, base station send access network A N (Access Network) specific signaling to UE；And to UE provide from
The information that SMF is received.
Step 610, base station send N2 PDU session response message to AMF；Wherein, in the N2 PDU session response message
The first PDU session identification and N2 session management information can be carried.
Step 611, AMF send N2 session management request message to SMF；Wherein, in the N2 session management request message
N2 session management information can be carried.
Step 612, AMF send N4 session establishment request message to the first UPF；First UPF returns to N4 session establishment to AMF
Confirmation message.
Step 613, SMF return to N2 session management response message to AMF.
Step 614, SMF send IPv6 advertising of route (Router Advertisement, RA) to UE by the first UPF and disappear
Breath；Wherein, the first IP address can be carried in the IPv6 advertising of route message.
In a specific embodiment of the present invention, UE carries out business access by the first PDU session established, and can be same
When access multiple target applications.The corresponding AF of each target application can be interacted directly with PCF；Can also by NEF with
PCF is interacted, and provides strategic decision-making of the relevant business information for PCF to PCF.Each target that AF is provided to PCF is answered
With the bandwidth that can carry the first IP address, the first media description component and first time request in corresponding first business information
Etc. information；AF can carry the second IP address, the second matchmaker into corresponding second business information of each target application that PCF is provided
Body describes the information such as the bandwidth of component and second of request.
When step 615, SMF meet pre-set trigger condition, SMF executes Multi-Homed to the first PDU session and determines
Plan.
In a specific embodiment of the present invention, the trigger condition may include：SMF receives any one target application
The flow of transmission is oriented to request；Alternatively, the network load of the first UPF is more than pre-set threshold value；Alternatively, SMF is received
The user face detection information that first UPF is sent reports.That is, any one third-party application may be found that the position of UE
And the first the position of UPF be not the optimal path for accessing the third-party application, which can send to SMF
Flow guiding request, for SMF after receiving the flow guiding request of third-party application transmission, SMF can determine gravity treatment UPF；Or
Person, when the network load of the first UPF is more than pre-set threshold value, SMF can determine gravity treatment UPF；Alternatively, SMF is received
User face detection information reports, and SMF can determine gravity treatment UPF.
Step 616, SMF select a new UPF as new anchor point UPF (being expressed as the 2nd UPF), and new for UE distribution
The corresponding new IP address (being IPv6 perfix2 here, be expressed as the 2nd UPF) of anchor point UPF.SMF sends first to PCF
Corresponding second policy request message of PDU session；Wherein, wherein can at least be carried in second policy request message
The validity period of IPv6 prefix1, IPv6 prefix2 and IPv6 prefix1.
Step 617, PCF carry out policy authorization.PCF determines the policing rule of the 2nd UPF of installation or activation.PCF is returned to SMF
Return the second tactful confirmation message.
Step 618, SMF can select UPF (being expressed as the 3rd UPF) as bifurcation (Branching Point,
BP)；SMF sends N4 session establishment request message to the 2nd UPF；2nd UPF returns to N4 session establishment confirmation message to SMF；Its
In, interblock interference rule can be carried in the N4 session establishment request message.
In a specific embodiment of the present invention, the 2nd UPF receive SMF transmission N4 session establishment request message it
Afterwards, the 2nd UPF can be regular with the interblock interference carried in the installed/activated N4 session establishment request message, and returns to N4 to SMF
Session establishment confirmation message.If the 2nd UPF distributes CN tunnel information, the N4 session establishment confirmation message that the 2nd UPF is returned to SMF
In can also carry the CN tunnel information.
Step 619, SMF send N4 session establishment message to BP；BP returns to N4 session confirmation message to SMF；Wherein, N4 meeting
Words establish in message the tunnel information, the tunnel information of the 2nd UPF and the tunnel information of RAN that can carry the first UPF.
In a specific embodiment of the present invention, SMF can also to BP send interblock interference rule, for by source address with
The matched upstream data of IPv6 prefix1 is transmitted to the first UPF, by source address and the matched upstream data of IPv6 prefix2
It is transmitted to the 2nd UPF；The downlink data from the first UPF or the 2nd UPF is sent to RAN simultaneously.If CN tunnel information is
First UPF distribution, BP can carry the tunnel information of BP into the N4 session confirmation message that SMF is returned.
If step 620, CN tunnel information are the 2nd UPF distribution, SMF sends N4 session modification request to the 2nd UPF and disappears
Breath；2nd UPF returns to N4 session modification confirmation message to SMF；Wherein, the tunnel of BP is carried in the N4 session modification request message
Road information.
Step 621, SMF send N4 session modification request message to the first UPF；First UPF returns to N4 session modification to SMF
Confirmation message；Wherein, the tunnel information of BP is carried in the N4 session modification request message.
Step 622, SMF send session modification request message to base station by AMF；Base station returns to session to SMF by AMF
Modify response message；Wherein, the tunnel information of BP can be carried in the session modification request message.
Step 623, SMF send IPv6 advertising of route message (IPv6 RA message) to UE by the first UPF；Wherein, described
The first IP address and validity period can be carried in IPv6 RA message.
Step 624, SMF send IPv6 RA message to UE by the 2nd UPF；It wherein, can be in the IPv6 RA message
Carry the second IP address.
Step 625, PCF carry out strategic decision-making.
In this step, PCF determines what UE was being accessed, and needs to carry out each target application of service flow transfer；
In addition, PCF also needs to consider whether each target application supports application layer gravity treatment.These target applications are in the first PDU session
It after foundation, is interacted by AF with PCF, business information is provided and requests the application for carrying out QoS guarantee to business.
Step 626, PCF send UPF reselection request message to the corresponding AF of target application；Wherein, the UPF reselection message
In can at least carry validity period and the second IP address of the first IP address.Optionally, the UPF reselection message can also carry
The location information of 2nd UPF.
Step 627, within the validity period of the first IP address, each target application is interacted with UE, carries out application layer
Gravity treatment, UE are accessed using the IP address (i.e. the second IP address) that new IPv6 Prefix 2 is generated, and each target application can
Can select one closer to the 2nd UPF destination application server continue provide access, then UE needs answered with each target
It is interacted with server.
Step 628, the corresponding AF of each target application return to UPF gravity treatment confirmation message to PCF；Wherein, the UPF gravity treatment
Each second business information after application layer gravity treatment can be carried in confirmation message.Optionally, in the UPF gravity treatment confirmation message
The address of each destination application server can also be carried.
The confirmation information updating strategic decision-making that step 629, PCF are returned according to AF, PCF are answered according to each target that AF is provided
Second business information implementation strategy.PCF is interacted with SMF, the policing rule for needing the target application migrated is provided, if AF is mentioned
The address of the destination application server of target application has been supplied, then can also carry the ground of destination application server in the acknowledgement message
Location.
Step 630, SMF send N4 session establishment request message to the 2nd UPF, for providing each target to the 2nd UPF
Using corresponding policing rule；2nd UPF returns to N4 session establishment confirmation message to SMF.
Step 631, SMF send IPv6 RA message to UE by the 2nd UPF；Wherein, the IPv6 RA message can be taken
The second IP address of band (i.e. IPv6 Prefixe2) and route option information；Wherein, mesh can be carried in the route option information
Mark the address of application server.
In a specific embodiment of the present invention, the application for needing to notify is determined for every PCF, executes step 626- step
631。
First from the first PDU session anchor can occur for the policy control method for the UPF gravity treatment that the embodiment of the present invention proposes, PCF
The of validity period of first IP address of the event notice and corresponding UE of the first UPF of point gravity treatment and the corresponding UE of the 2nd UPF
Two IP address；Then the validity period of the first IP address and the second IP address, it is corresponding can be sent to each target application by PCF
AF.That is, in the technical solution of the embodiment of the present invention, PCF can by the validity period of the corresponding IP address of the first UPF and
The IP address of 2nd UPF notifies AF corresponding to the first PDU session, so that each target application can having in the first IP address
The preceding gravity treatment for executing application layer, i.e., carry out business access using the second IP address in the effect phase, and each target application can choose one
A application server closer to the 2nd UPF continues offer business.And in the prior art, SMF can only be directed to one of target
Using progress UPF gravity treatment.Therefore, compared to the prior art, the policy control method for the UPF gravity treatment that the embodiment of the present invention proposes,
After UPF gravity treatment being triggered because of a target application, the event for other target applications UPF gravity treatment that notice UE is being accessed,
So that other target applications carry out the gravity treatment of application layer within the validity period of the first IP address, UE will not accessed other
The usage experience of target application has an impact；Also, the technical solution realization of the embodiment of the present invention is simple and convenient, convenient for universal,
Use scope is wider.
Fig. 7 is the 4th implementation process schematic diagram of the policy control method of UPF gravity treatment in the embodiment of the present invention.Such as Fig. 7 institute
Show, the policy control method of UPF gravity treatment may comprise steps of：
Step 701, UE initiate attachment flow to AMF by base station, complete network registry of the UE in AMF.
Step 702, UE initiate the PDU session establishment request message of the first PDU session to AMF；Wherein, the PDU session
The first PDU session identification, request type, N1 session management information (SM Information) can be carried by establishing in request message
(Data Network Name, DN Name) is known with data network mark.
Step 703, AMF send session management request message to selected SMF；Wherein, the session management request disappears
User identifier can be carried in breath；DN Name, the first PDU session identification, customer position information, SSC Mode and N1 session
Management information (N1 SM Information).
Step 704, SMF select a UPF as anchor point UPF (being expressed as the first UPF) for the first PDU session, and are UE
Distributing the corresponding IP address of anchor point UPF (is IPv6 prefix1 or IPv4address 1 here, with being expressed as the first IP
Location).SMF sends corresponding first policy request message of the first PDU session to PCF；Wherein, in first policy request message
User identifier, DN Name, SSC Mode and the first IP address can be carried.
In this step, for SMF before sending the corresponding policy request message of PDU session to PCF, SMF can also be with system
One data management UDM interaction, obtains the signing information of user, and verify to UE.
Step 705, PCF return to the first tactful confirmation message to SMF；It wherein, can be in the described first tactful confirmation message
Carry default policy.
In a specific embodiment of the present invention, the default policy may include：It polymerize maximum rate (Aggregate
Maximum Bit Rat, AMBR), qos parameter and event trigger event trigger.
Step 706, SMF send N4 session establishment request message to the first UPF；First UPF returns to N4 session establishment to SMF
Confirmation message；Wherein, interblock interference rule can be carried in the N4 session establishment request message.
Step 707, SMF send session management response message to AMF；It wherein, can be in the session management response message
Carry N2 session management information (N2 SM Information) and N1 session management information (N1 SM Information).
Step 708, AMF send N2 PDU conversation request message to base station；Wherein, in the N2 PDU conversation request message
N2 session management information and NAS information can be carried.
Step 709, base station send the specific signaling of AN to UE；And the information received from SMF is provided to UE.
Step 710, base station send N2 PDU session response message to AMF；Wherein, in the N2 PDU session response message
The first PDU session identification and N2 session management information (N2 SM Information) can be carried.
Step 711, AMF send N2 session management request message to SMF；Wherein, in the N2 session management request message
N2 session management information (N2 SM Information) can be carried.
Step 712, AMF send N4 session establishment request message to the first UPF；First UPF returns to N4 session establishment to AMF
Confirmation message.
Step 713, SMF return to N2 session management response message to AMF.
Step 714, optionally, if SMF is by the first UPF to UE without the first IP address of distribution in step 707
It sends address configuration message and distributes the first IP address.As IPv6 advertising of route (Router Advertisement, abbreviation RA) disappears
Breath.
In a specific embodiment of the present invention, UE carries out business access by the first PDU session established, and can be same
When access multiple target applications.The corresponding AF of each target application can be interacted directly with PCF；Can also by NEF with
PCF is interacted, and provides strategic decision-making of the relevant business information for PCF to PCF.Each target that AF is provided to PCF is answered
With the bandwidth that can carry the first IP address, the first media description component and first time request in corresponding first business information
Etc. information；AF can carry the second IP address, the second matchmaker into corresponding second business information of each target application that PCF is provided
Body describes the information such as the bandwidth of component and second of request.
When step 715, SMF meet pre-set trigger condition, anchor point UPF gravity treatment is carried out by more PDU session establishments.
In a specific embodiment of the present invention, the trigger condition may include：SMF receives any one target application
The flow of transmission is oriented to request；Alternatively, the network load of the first UPF is more than pre-set threshold value；Alternatively, SMF is received
The user face detection information that first UPF is sent reports.That is, any one third-party application may be found that the position of UE
And the first the position of UPF be not the optimal path for accessing the third-party application, which can send to SMF
Flow guiding request, for SMF after receiving the flow guiding request of third-party application transmission, SMF can determine gravity treatment UPF；Or
Person, when the network load of the first UPF is more than pre-set threshold value, SMF can determine gravity treatment UPF；Alternatively, SMF is received
User face detection information reports, and SMF can determine gravity treatment UPF.
Step 716, SMF send NAS notification message to UE；Wherein, the first PDU can be carried in the NAS notification message
The validity period (i.e. the time that the first PDU session will be kept) of session identification and the first IP address.
In this step, SMF notifies the first PDU session of UE that will be released over time, while notifying UE that request is built
Vertical one is arrived the 2nd PDU session of the same DN.
Step 717, UE initiate the PDU session establishment request message of the 2nd PDU session to AMF；Wherein, the PDU session
The first PDU session identification, the 2nd PDU session identification, request type, N1 session management information can be carried by establishing in request message
(SM Information) and data network mark know (Data Network Name, DN Name).
Step 718, AMF select the same SMF according to the first PDU session identification；AMF sends session to selected SMF
Manage request message；Wherein, user identifier can be carried in the session management request message；DN Name, the first PDU session
Mark, the 2nd PDU session identification, customer position information, SSC Mode and N1 session management information (N1 SM
Information)。
Step 719, SMF are that the 2nd PDU session selects the 2nd UPF as new anchor point UPF, and distributes the 2nd UPF for UE
Corresponding second IP address (can be the address IPv4 2 or IPv6 prefix 2).SMF sends the 2nd PDU session to PCF and corresponds to
The second policy request message；Wherein, user identifier, DN Name, SSC can be carried in second policy request message
Mode and the second IP address.
In this step, SMF is before sending corresponding second policy request message of the 2nd PDU session to PCF, and SMF is also
UDM can be managed with uniform data to interact, obtain the signing information of user, and verify to UE.
Step 720, PCF return to the second tactful confirmation message to SMF；It wherein, can be in the described second tactful confirmation message
Carry default policy.
Step 721, SMF send N4 session establishment request message to the 2nd UPF；2nd UPF returns to N4 session establishment to SMF
Confirmation message；Wherein, interblock interference rule can be carried in the N4 session establishment request message.
Step 722, SMF send session management response message to AMF；It wherein, can be in the session management response message
Carry N2 session management information (N2 SM Information) and N1 session management information (N1 SM Information).
Step 723, AMF send N2 PDU conversation request message to base station；Wherein, in the N2 PDU conversation request message
N2 session management information and NAS information can be carried.
Step 724, base station send the specific signaling of AN to UE；And the information received from SMF is provided to UE.
Step 725, base station send N2 PDU session response message to AMF；Wherein, in the N2 PDU session response message
PDU session identification and N2 session management information (N2 SM Information) can be carried.
Step 726, AMF send N2 session management request message to SMF；Wherein, in the N2 session management request message
N2 session management information (N2 SM Information) can be carried.
Step 727, AMF send N4 session modification request message to the first UPF；First UPF returns to N4 session modification to AMF
Confirmation message.
Step 728, SMF return to N2 session management response message to AMF.
Step 729, optionally, if SMF is by the 2nd UPF to UE in step 622 without the second IP address of distribution
It sends address configuration message and distributes the second IP address.As IPv6 advertising of route (Router Advertisement, abbreviation RA) disappears
Breath.
Step 730, PCF carry out strategic decision-making.
In this step, PCF determines what UE was being accessed, and needs to carry out each target application of service flow transfer；
In addition, PCF also needs to consider whether each target application supports application layer gravity treatment.These applications are in the first PDU session establishment
Afterwards, it is interacted by AF with PCF, business information is provided and requests the application for carrying out QoS guarantee to business.
Step 731, PCF send UPF reselection request message to the corresponding AF of target application；Wherein, the UPF reselection message
In can at least carry validity period and the second IP address of the first IP address.Optionally, it can also be taken in the UPF reselection message
Location information with the 2nd UPF.
Step 732, within the validity period of the first IP address, each target application is interacted with UE, carries out application layer
Gravity treatment, UE are accessed using the second new IP address, and each target application may select a target closer to the 2nd UPF
Application server continues to provide access, then UE needs are interacted with each destination application server.
Step 733, the corresponding AF of each target application return to UPF gravity treatment confirmation message to PCF；Wherein, the UPF gravity treatment
Confirmation message can carry the second business information after application layer gravity treatment.Optionally, the UPF gravity treatment confirmation message can also be taken
Address with destination application server.
The confirmation information update strategic decision-making that step 734, PCF are returned according to AF, PCF are answered according to each target that AF is provided
Second business information is generated strategy.PCF is interacted with SMF, the policing rule for needing the target application migrated is provided, if AF is mentioned
The address of the destination application server of target application has been supplied, then can also carry the ground of destination application server in confirmation message
Location.
Step 735, SMF send N4 session modification request message to the 2nd UPF；2nd UPF returns to N4 session modification to SMF
Confirmation message.
Step 736, optionally, SMF sends address configuration message to UE by the 2nd UPF, such as IPv6 RA message；Wherein,
IPv6 prefix 2 and route option information can be carried in the IPv6 RA message；Wherein, the routing iinformation option letter
Carrying in breath can be with the address of destination application server.
In a specific embodiment of the present invention, the application for needing to notify is determined for every PCF, executes step 731- step
736。
First from the first PDU session anchor can occur for the policy control method for the UPF gravity treatment that the embodiment of the present invention proposes, PCF
The of validity period of first IP address of the event notice and corresponding UE of the first UPF of point gravity treatment and the corresponding UE of the 2nd UPF
Two IP address；Then the validity period of the first IP address and the second IP address, it is corresponding can be sent to each target application by PCF
AF.That is, in the technical solution of the embodiment of the present invention, PCF can by the validity period of the corresponding IP address of the first UPF and
The IP address of 2nd UPF notifies AF corresponding to the first PDU session, so that each target application can having in the first IP address
The preceding gravity treatment for executing application layer, i.e., carry out business access using the second IP address in the effect phase, and each target application can choose one
A application server closer to the 2nd UPF continues offer business.And in the prior art, SMF can only be directed to one of target
Using progress UPF gravity treatment.Therefore, compared to the prior art, the policy control method for the UPF gravity treatment that the embodiment of the present invention proposes,
After UPF gravity treatment being triggered because of a target application, the event for other target applications UPF gravity treatment that notice UE is being accessed,
So that other target applications carry out the gravity treatment of application layer within the validity period of the first IP address, UE will not accessed other
The usage experience of target application has an impact；Also, the technical solution realization of the embodiment of the present invention is simple and convenient, convenient for universal,
Use scope is wider.
Fig. 8 is the first composed structure schematic diagram of PCF in the embodiment of the present invention.As shown in figure 8, the PCF includes：It obtains
Unit 801 and transmission unit 802；Wherein,
The acquiring unit 801, for obtaining the event notice and that anchor point gravity treatment occurs for the first PDU session from SMF
The validity period of the first IP address of the corresponding UE of one UPF and the second IP address of the corresponding UE of the 2nd UPF；
The transmission unit 802, for first IP address and validity period and second IP address to be sent to respectively
The corresponding AF of a target application.
Further, the acquiring unit 801 is also used in the establishment process of the first PDU session, from described
SMF obtains first IP address.
Fig. 9 is the second composed structure schematic diagram of PCF in the embodiment of the present invention.As shown in figure 9, the PCF further includes：Plan
Slightly Rulemaking unit 803, corresponding first business information of each target application provided for receiving each AF；According to each
Corresponding first business information of target application formulates corresponding first policing rule of each target application；
The transmission unit 802 is also used to the corresponding policing rule of each target application being supplied to the SMF.
Further, the policing rule formulates unit 803, is also used to receive each target application pair that each AF is provided
The second business information answered；Each target application corresponding second is formulated according to corresponding second business information of each target application
Policing rule；
The transmission unit 802 is also used to corresponding second policing rule of each target application being supplied to the SMF.
Further, the acquiring unit 801 is also used to receive the corresponding target of each target application that each AF is provided
The address of application server；
The transmission unit 802 is also used to for being supplied to the address of the corresponding destination application server of each target application
The SMF.
The event notice of anchor point gravity treatment can first occur from the first PDU session for the PCF that the embodiment of the present invention proposes, PCF, with
And the first the corresponding UE of UPF the first IP address validity period and the corresponding UE of the 2nd UPF the second IP address；Then PCF can
The validity period of the first IP address and the second IP address are sent to the corresponding AF of each target application.That is, in this hair
In the technical solution of bright embodiment, PCF can lead to the IP address of the validity period of the corresponding IP address of the first UPF and the 2nd UPF
AF corresponding to the first PDU session is known, so that each target application preceding within the validity period of the first IP address can execute application
The gravity treatment of layer, i.e., carry out business access using the second IP address, and each target application can choose one closer to the 2nd UPF's
Application server continues offer business.And in the prior art, SMF can only carry out UPF gravity treatment for one of target application.Cause
This, compared to the prior art, the PCF that the embodiment of the present invention proposes leads to after can triggering UPF gravity treatment because of a target application
The event for other target applications UPF gravity treatment that UE is being accessed is known, so that other target applications are in the validity period of the first IP address
The interior gravity treatment for carrying out application layer, will not have an impact the usage experience for other target applications that UE is being accessed；Also, this hair
The technical solution realization of bright embodiment is simple and convenient, and convenient for universal, use scope is wider.
Figure 10 is the first composed structure schematic diagram of SMF in the embodiment of the present invention.As shown in Figure 10, the SMF includes：Anchor
Point gravity treatment unit 1001 and notification unit 1002；Wherein,
The anchor point gravity treatment unit 1001, for being executed to the first PDU session when meeting pre-set trigger condition
Anchor point gravity treatment；
The notification unit 1002, the event for anchor point gravity treatment will to occur notify and the corresponding UE of the first UPF the
The second IP address of the validity period of one IP address and the corresponding UE of the 2nd UPF are notified to PCF.
Figure 11 is the second composed structure schematic diagram of SMF in the embodiment of the present invention.As shown in figure 11, the SMF further includes：
Allocation unit 1003, in the establishment process of the first PDU session, being described in the first PDU session selection
First UPF distributes first IP address；
The notification unit 1002 is also used to first IP address notifying the PCF.
Further, the trigger condition includes at least one of：
Receive the flow guiding request of any one target application transmission；
Alternatively, the network load of the first UPF is more than pre-set threshold value；
Alternatively, receiving reporting for the user face detection information that the first UPF is sent.
Further, the allocation unit 1003 is also used to for the first UPF session being changed to belong to more
Multi-Homing PDU session；The 2nd UPF is selected for the Multi-Homing PDU session, and distributes described second
IP address.
Further, the notification unit 1002 is also used to notify the first PDU session described in the UE in the validity period
After will be released so that the UE request establish a 2nd PDU session；Wherein, the first PDU session and described second
The corresponding outer data network DN of PDU session is identical；
The allocation unit 1003 is also used to receive the foundation request for the 2nd PDU session that the UE is sent
Message selects the 2nd UPF for the 2nd PDU session, and distributes second IP address.
Further, the SMF further includes：Detected rule formulates unit 1004, for receiving each of the PCF formulation
Corresponding first policing rule of target application；Each target application is formulated according to corresponding first policing rule of each target application
Corresponding first interblock interference rule；
The notification unit 1002 is also used to for the corresponding first interblock interference rule of each target application being supplied to described
2nd UPF.
Further, the detected rule formulates unit 1004, is also used to receive each target application that the PCF is formulated
Corresponding second policing rule；Each target application corresponding the is formulated according to corresponding second policing rule of each target application
Two interblock interferences rule；
The notification unit 1002 is also used to for the corresponding interblock interference rule of each target application being supplied to described
Two UPF.
Further, it is corresponding to be also used to receive each target application that the PCF is provided for the anchor point gravity treatment unit 1001
Source application server address；
The notification unit 1002 is also used to the address of the corresponding source application server of each target application being supplied to institute
State UE.
Further, it is corresponding to be also used to receive each target application that the PCF is provided for the anchor point gravity treatment unit 1001
Destination application server address；
The notification unit 1002 is also used to for being supplied to the address of the corresponding destination application server of each target application
The UE.
The SMF that the embodiment of the present invention proposes, when meeting pre-set trigger condition, SMF can be to the first PDU session
Execute anchor point gravity treatment；Then the event notice of anchor point gravity treatment and the first IP of the first UPF corresponding UE can will occur for SMF
The second IP address of the validity period of location and the corresponding UE of the 2nd UPF are notified to PCF.That is, in the skill of the embodiment of the present invention
In art scheme, the effective of the first IP address of the event notice and the corresponding UE of the first UPF of anchor point gravity treatment can will occur for SMF
The second IP address of phase and the corresponding UE of the 2nd UPF notify that then PCF can having the first corresponding IP address of UPF to PCF
The IP address of effect phase and the 2nd UPF notify AF corresponding to each target application, so that each target application can be in the first IP
The preceding gravity treatment for executing application layer, i.e., carry out business access using the second IP address, each target application can in the validity period of address
To select an application server closer to the 2nd UPF to continue offer business.And in the prior art, SMF can only be for wherein
One target application carries out UPF gravity treatment.Therefore, compared to the prior art, the SMF that the embodiment of the present invention proposes, can be because of one
After a target application triggering UPF gravity treatment, the event for other target applications UPF gravity treatment that notice UE is being accessed, so as to other mesh
Mark applies the gravity treatment that application layer is carried out within the validity period of the first IP address, will not be to other target applications that UE is being accessed
Usage experience has an impact；Also, the technical solution realization of the embodiment of the present invention is simple and convenient, and convenient for universal, use scope is more
Extensively.
In practical applications, the acquiring unit 801, transmission unit 802 and policing rule formulation unit 803 can be by being located at
Central processing unit (CPU), microprocessor (MPU), digital signal processor (DSP) or field programmable gate array in PCF
(FPGA) etc. it realizes；Anchor point gravity treatment unit 1001, notification unit 1002 and allocation unit 1003 can by be located at SMF in
Central processor (CPU), microprocessor (MPU), digital signal processor (DSP) or field programmable gate array (FPGA) etc. are real
It is existing.
In addition, each unit in the present embodiment can physically exist alone, it can also be with two or more units
It is integrated in one unit.Above-mentioned integrated unit both can take the form of hardware realization, can also use software function mould
The form of block is realized.
If the integrated unit realizes that being not intended as independent product is sold in the form of software function module
Or in use, can store in a read/write memory medium, based on this understanding, the technical solution of the present embodiment is essential
On all or part of the part that contributes to existing technology or the technical solution can be with the shape of software product in other words
Formula embodies, which is stored in a storage medium, including some instructions are used so that a host (can be
Individual mobile terminal, server or network equipment etc.) or processor (processor) execution the present embodiment the method
All or part of the steps.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
Specifically, the corresponding program instruction of the policy control method of UPF gravity treatment can be stored in light in the present embodiment
Disk, hard disk, on the storage mediums such as USB flash disk, when the program instruction quilt corresponding with the policy control method of UPF gravity treatment in storage medium
One electronic equipment reads or is performed, and includes the following steps：
The event notice and the corresponding user equipment of the first UPF that anchor point gravity treatment occurs for the first PDU session are obtained from SMF
The validity period of the first IP address of UE and the second IP address of the corresponding UE of the 2nd UPF；
The validity period of first IP address and second IP address are sent to the corresponding AF of each target application.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, the shape of hardware embodiment, software implementation or embodiment combining software and hardware aspects can be used in the present invention
Formula.Moreover, the present invention, which can be used, can use storage in the computer that one or more wherein includes computer usable program code
The form for the computer program product implemented on medium (including but not limited to magnetic disk storage and optical memory etc.).
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (28)
1. a kind of policy control method of user plane functions entity UPF gravity treatment, which is characterized in that the method includes：
From conversation management functional entity SMF obtain the first protocol Data Unit PDU session occur anchor point gravity treatment event notice with
And the first the corresponding user equipment (UE) of UPF the first IP address validity period and the corresponding UE of the 2nd UPF the second IP address；
The validity period of first IP address and second IP address are sent to the corresponding application function of each target application
Entity A F.
2. the method according to claim 1, wherein obtaining the first PDU session generation anchor from SMF described
The of validity period of first IP address of the event notice and corresponding UE of the first UPF of point gravity treatment and the corresponding UE of the 2nd UPF
Before two IP address, the method also includes：
In the establishment process of the first PDU session, first IP address is obtained from the SMF.
3. the method according to claim 1, wherein obtaining the first PDU session generation anchor point weight from SMF described
The event of choosing notifies and the 2nd IP of the validity period of the first IP address of the corresponding UE of the first UPF and the corresponding UE of the 2nd UPF
Before address, the method also includes：
Receive corresponding first business information of each target application that each AF is provided；
Corresponding first policing rule of each target application is formulated according to corresponding first business information of each target application；
The corresponding policing rule of each target application is supplied to the SMF.
4. according to the method described in claim 3, it is characterized in that, described by the validity period of first IP address and described
Second IP address is sent to after the corresponding AF of each target application, the method also includes：
Receive corresponding second business information of each target application that each AF is provided；
Corresponding second policing rule of each target application is formulated according to corresponding second business information of each target application；
Corresponding second policing rule of each target application is supplied to the SMF.
5. the method according to claim 1, wherein described by the validity period of first IP address and described
Second IP address is sent to after the corresponding AF of each target application, the method also includes：
Receive the address for the corresponding destination application server of each target application that each AF is provided；
The address of the corresponding destination application server of each target application is supplied to the SMF.
6. a kind of policy control method of UPF gravity treatment, which is characterized in that the method includes：
When meeting pre-set trigger condition, anchor point gravity treatment is executed to the first PDU session；
Validity period and the 2nd UPF of the first IP address of the event notice and the corresponding UE of the first UPF of anchor point gravity treatment will occur
The second IP address of corresponding UE notifies to give policy control functions entity PCF.
7. according to the method described in claim 6, the method is also before the execution anchor point gravity treatment to the first PDU session
Including：
In the establishment process of the first PDU session, the first UPF is selected for the first PDU session, distributes described the
One IP address；
First IP address is notified to the PCF.
8. according to the method described in claim 6, it is characterized in that, the trigger condition includes at least one of：
Receive the flow guiding request of any one target application transmission；
Alternatively, the network load of the first UPF is more than pre-set threshold value；
Alternatively, receiving reporting for the user face detection information that the first UPF is sent.
9. according to the method described in claim 6, it is characterized in that, it is described to the first UPF execute anchor point gravity treatment after,
The method also includes：
The first UPF session is changed to more ownership Multi-Homing PDU sessions；
The 2nd UPF is selected for the Multi-Homing PDU session, and distributes second IP address.
10. according to the method described in claim 6, it is characterized in that, it is described to the first PDU session execute anchor point gravity treatment it
Afterwards, the method also includes：
Notify the first PDU session described in the UE that will be released after the validity period, so that UE request establishes one the
Two PDU sessions；Wherein, the first PDU session outer data network DN corresponding with the 2nd PDU session is identical；
Receive the 2nd PDU session that the UE is sent establishes request message, for the 2nd PDU session selection described the
Two UPF, and distribute second IP address.
11. according to the method described in claim 6, it is characterized in that, it is described to the first PDU session execute anchor point gravity treatment it
Before, the method also includes：
Receive corresponding first policing rule of each target application that the PCF is formulated；
The corresponding first interblock interference rule of each target application is formulated according to corresponding first policing rule of each target application；
The corresponding first interblock interference rule of each target application is supplied to the 2nd UPF.
12. according to the method for claim 11, which is characterized in that it is described by occur anchor point gravity treatment event notice and
The validity period of the first IP address of the corresponding UE of first UPF and the second IP address of the corresponding UE of the 2nd UPF are notified to the PCF
Later, the method also includes：
Receive corresponding second policing rule of each target application that the PCF is formulated；
The corresponding second packet detected rule of each target application is formulated according to corresponding second policing rule of each target application；
The corresponding interblock interference rule of each target application is supplied to the 2nd UPF.
13. according to the method described in claim 6, it is characterized in that, it is described to the first PDU session execute anchor point gravity treatment it
Before, the method also includes：
Receive the address for the corresponding source application server of each target application that the PCF is provided；
The address of the corresponding source application server of each target application is supplied to the UE.
14. according to the method described in claim 6, it is characterized in that, it is described by occur anchor point gravity treatment event notice and
The validity period of the first IP address of the corresponding UE of first UPF and the second IP address of the corresponding UE of the 2nd UPF are notified to PCF
Later, the method also includes：
Receive the address for the corresponding destination application server of each target application that the PCF is provided；
The address of the corresponding destination application server of each target application is supplied to the UE.
15. a kind of PCF, which is characterized in that the PCF includes：Acquiring unit and transmission unit；Wherein,
The acquiring unit, for from SMF obtain the first PDU session occur anchor point gravity treatment event notice and the first UPF pairs
The validity period of the first IP address of the UE answered and the second IP address of the corresponding UE of the 2nd UPF；
First IP address and validity period and second IP address are sent to the corresponding AF of each target application.
16. PCF according to claim 15, which is characterized in that the acquiring unit is also used in the first PDU meeting
In the establishment process of words, first IP address is obtained from the SMF.
17. PCF according to claim 15, which is characterized in that the PCF further includes：Policing rule formulates unit, is used for
Receive corresponding first business information of each target application that each AF is provided；According to corresponding first business of each target application
Information formulates corresponding first policing rule of each target application；
The transmission unit is also used to the corresponding policing rule of each target application being supplied to the SMF.
18. PCF according to claim 17, which is characterized in that the policing rule formulates unit, is also used to receive each
Corresponding second business information of each target application that AF is provided；It is formulated according to corresponding second business information of each target application
Corresponding second policing rule of each target application；
The transmission unit is also used to corresponding second policing rule of each target application being supplied to the SMF.
19. PCF according to claim 15, which is characterized in that the acquiring unit is also used to receive what each AF was provided
The address of the corresponding destination application server of each target application；
The transmission unit is also used to the address of the corresponding destination application server of each target application being supplied to the SMF.
20. a kind of SMF, which is characterized in that the SMF includes：Anchor point gravity treatment unit and notification unit；Wherein,
The anchor point gravity treatment unit, for executing anchor point weight to the first PDU session when meeting pre-set trigger condition
Choosing；
The notification unit, the event for anchor point gravity treatment will to occur notifies and the first IP address of the corresponding UE of the first UPF
Validity period and the second IP address of the corresponding UE of the 2nd UPF notify to PCF.
21. SMF according to claim 20, which is characterized in that the SMF further includes：Allocation unit, in institute
In the establishment process for stating the first PDU session, the first UPF is selected for the first PDU session, with distributing the first IP
Location；
The notification unit is also used to first IP address notifying the PCF.
22. SMF according to claim 20, which is characterized in that the trigger condition includes at least one of：
Receive the flow guiding request of any one target application transmission；
Alternatively, the network load of the first UPF is more than pre-set threshold value；
Alternatively, receiving reporting for the user face detection information that the first UPF is sent.
23. SMF according to claim 20, which is characterized in that the allocation unit is also used to described first
UPF session is changed to more ownership Multi-Homing PDU sessions；For Multi-Homing PDU session selection described the
Two UPF, and distribute second IP address.
24. SMF according to claim 20, which is characterized in that the notification unit is also used to notify described in the UE
One PDU session will be released after the validity period, so that a 2nd PDU session is established in UE request；Wherein, described
One PDU session outer data network DN corresponding with the 2nd PDU session is identical；
The allocation unit, be also used to receive the 2nd PDU session that the UE is sent establishes request message, for institute
It states the 2nd PDU session and selects the 2nd UPF, and distribute second IP address.
25. SMF according to claim 20, which is characterized in that the SMF further includes：Detected rule formulates unit, is used for
Receive corresponding first policing rule of each target application that the PCF is formulated；According to corresponding first plan of each target application
The slightly corresponding first interblock interference rule of each target application of Rulemaking；
The notification unit is also used to the corresponding first interblock interference rule of each target application being supplied to the 2nd UPF.
26. SMF according to claim 25, which is characterized in that the detected rule formulates unit, is also used to receive described
Corresponding second policing rule of each target application that PCF is formulated；According to the corresponding second policing rule system of each target application
Determine the corresponding second packet detected rule of each target application；
The notification unit is also used to the corresponding interblock interference rule of each target application being supplied to the 2nd UPF.
27. SMF according to claim 20, which is characterized in that the anchor point gravity treatment unit is also used to receive the PCF
The address of the corresponding source application server of each target application provided；
The notification unit is also used to the address of the corresponding source application server of each target application being supplied to the UE.
28. SMF according to claim 20, which is characterized in that the anchor point gravity treatment unit is also used to receive the PCF
The address of the corresponding destination application server of each target application provided；
The notification unit is also used to the address of the corresponding destination application server of each target application being supplied to the UE.
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| CN201710377964.1A CN108934007B (en) | 2017-05-25 | 2017-05-25 | Policy control method for UPF reselection, PCF and SMF |
| PCT/CN2018/080732 WO2018214638A1 (en) | 2017-05-25 | 2018-03-27 | Policy control method and device for user-plane function entity reselection, and storage medium |
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| CN201710377964.1A CN108934007B (en) | 2017-05-25 | 2017-05-25 | Policy control method for UPF reselection, PCF and SMF |
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| CN108934007B (en) | 2022-03-25 |
| WO2018214638A1 (en) | 2018-11-29 |
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