CN101959258B - Session association method and "Policy and Charging Rules Function entity - Google Patents
Session association method and "Policy and Charging Rules Function entity Download PDFInfo
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Abstract
The invention discloses a kind of session association method and "Policy and Charging Rules Function entity, the method includes: "Policy and Charging Rules Function entity obtains first network agreement from packet data serving node and connects the request of access network session establishment, sets up first network agreement and connects access network session；"Policy and Charging Rules Function entity obtains the second procotol from home agent and connects the request of access network session establishment, sets up the second procotol and connects access network session；"Policy and Charging Rules Function entity completes first network agreement and connects access network session and the association of the second procotol connection access network session, and completes procotol connection access network session and the association of gateway control session.This invention ensures that the correctness of session association.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of session association method and
"Policy and Charging Rules Function entity (Policy and Charging Rules Function, letter
It is referred to as PCRF).
Background technology
(3rd Generation Partnership Project is called for short third generation partner program
For 3GPP) define the strategy for mobile network and charging control architecture (Policy and
Charging Control, referred to as PCC), Fig. 1 is the 3GPP PCC according to correlation technique
The schematic diagram of R8 framework, as it is shown in figure 1, each entity function is described below:
PCRF is that the business data flow that business packet contains uses Internet resources to carry out service quality
(Quality of Service, referred to as QoS) and the formulation of charging policy and management.PCRF
It is divided into ownership PCRF (home PCRF, referred to as h-PCRF) and visit PCRF (visit
PCRF, referred to as v-PCRF), wherein, h-PCRF is positioned at home network, v-PCRF
It is positioned at roaming network.
Strategy and charging execution function entity (Policy and Charging Enforcement
Function, referred to as PCEF) prewired for performing on that PCRF issues or PCEF
The PCC rule put, detects the IP message of transmission over networks, identifies this IP message
The business data flow being subordinate to, and business data flow provides QoS and charging control.
Bearing binding and reporting events function (Bearer Binding and Event Report
Function, referred to as BBERF) it is mainly used in the IP message of transmission over networks is examined
Survey, and IP message is mapped on the bearer path of correspondence according to rule.Additionally, BBERF
Also perform reporting of carrying gateway dependent event, such as, when carrying is lost, or connect
When entering network switching, it is required for making corresponding reporting events to PCRF, request PCRF
Corresponding decision-making.
Additionally, user-subscribed database (Subscription Profile Repository, abbreviation
For SPR) for preserving the business information of user's signing, work out PCC rule for PCRF and carry
For necessary user signing contract information.Online Charging System (Online Charging System,
Referred to as OCS) and off-line accounting system (Offline Charging System, referred to as
OFCS) it is respectively used to online and offline charging.
PCRF respectively by Gx, Gxa, Sp, Rx interface realize and PCEF, BBERF,
SPR, AF's is mutual, and PCEF is realized and OCS, OFCS by Gy, Gz interface respectively
Mutual.
PCC framework is as follows to the principle of the service implementation policy control of transmission on bearer network:
First, PCRF before user formally carries out concrete business, need and BBERF,
Set up gateway control session between PCEF respectively, procotol connects access network (Internet
Protocol Connection Access Network, referred to as IP-CAN) session, and want
Set up gateway control session and IP-CAN session association (its flow process as shown in Figure 2 and Figure 3,
To will be described in detail below), with ensure for particular traffic data stream at BBERF and
The upper uniformity implementing control strategy of PCEF.
Hereafter, during business is carried out, by PCRF according to application layer consultation business service information,
User signing contract information, carrier policy etc. are worked out corresponding for the business data flow that business packet contains
Strategy, comprises the information such as the five-tuple information of mark stream, mandate bandwidth.And by strategy with QoS
Rule format is handed down to BBERF, is handed down to PCEF with PCC rule format.When IP reports
When literary composition arrives PCEF, BBERF, first according to five-tuple information matches IP in rule
Message, and use corresponding carrying to be transmitted the IP message matched, and carry out corresponding
Charging, to realize the effective control to business.It addition, during business is carried out, send out
The change of raw business information, such as, is terminated a certain business data flow, also may be used by PCC
To discharge the Internet resources shared by business in real time, reach business is carried out dynamic QoS control
Purpose.
Related to the present invention gateway control session and IP-CAN session establishment stream are described below
Journey.Gateway control session and IP-CAN session can be attached to network or request connects in terminal
Set up when entering Packet Data Network (Packet Data Network, referred to as PDN) network.
Fig. 2 is the interaction diagrams that the gateway control session according to correlation technique is set up, such as figure
Shown in 2, the flow process that gateway control session is set up includes that steps S201 is to step
S208:
Step S201, BBERF receives the finger setting up gateway control session from access network
Show message.
Step S202, BBERF initiates gateway by Diameter CCR message to PCRF
Control session establishment request, and in this Diameter CCR message provide ID,
PDN mark, IP-CAN access style information.If under roaming condition, ask message
(that is, Diameter CCR message) needs to be sent to h-PCRF through v-PCRF.
Step S203, PCRF receives request message, and the information wherein carried is protected
Deposit.
Step S204, if now PCRF does not has and this user-dependent user signing contract information,
From SPR, then obtain user signing contract information.
Step S205, PCRF is according to the information of above-mentioned acquisition and carrier policy, for i.e.
The IP-CAN session of foundation is generated PCC rule, decision-making of generating strategy, and according to PCC
Rule produces QoS rule.
Step S206, PCRF returns gateway control session by message to BBERF and sets up
Response, comprises QoS rule, the QoS etc. of default bearer in this Diameter CCA message
Information.If roaming condition, response message (that is, Diameter CCA message) by
H-PCRF is handed down to BBERF by v-PCRF.
Step S207, BBERF implementation strategy, the QoS rule received is installed.
Step S208, BBERF returns the response that gateway control session is successfully established.
Fig. 3 is the interaction diagrams of the IP-CAN session establishment according to correlation technique, such as figure
Shown in 3, IP-CAN session establishment flow process includes that steps S301 is to step S311:
Step S301, BBERF detects that UE initiates the request of IP-CAN session establishment,
Gateway control session is set up between BBERF and PCRF.During setting up, user is marked
Know, PDN mark, IP-CAN access style are sent to PCRF.
Step S302, the IP-CAN session establishment that PCEF receives from BBERF is asked.
Step S303, PCEF initiates IP-CAN by Diameter CCR message to PCRF
Session establishment is asked, and comprises ID, PDN mark, UE this locality in this request message
The information such as IP address, IP-CAN access style, acquiescence charging method.If roaming feelings
Condition, then request message is sent to h-PCRF by v-PCRF.
Step S304, PCRF preserves the information received from PCEF.
Step S305, according to ID, the PDN mark of PCEF transmission, and gateway
Controlling ID and PDN mark that session establishment phase BBERF sends, PCRF is complete
Become gateway control session and the association of IP-CAN session.
Step S306, if PCRF now lacks this user-dependent user signing contract information,
Then obtain user signing contract information to SPR.
Step S307, according to above-mentioned information and carrier policy, PCRF carries out strategy certainly
Plan, and select or produce (formulation) PCC rule.
Step S308, PCRF provides PCC by Diameter CCA message to PCEF
Rule.If the situation of roaming, then PCC rule needs h-PCRF to pass through v-PCRF
It is supplied to PCEF.
Step S309, now PCRF also needs to produce QoS rule according to PCC rule,
By gateway control and QoS rule provide program by up-to-date QoS algorithm to
BBERF。
Step S310, PCEF receives and implementation strategy, installs PCC rule.
Step S311, PCEF returns the response of IP-CAN session establishment request.
Third generation partner program 2 (3rd Generation Partnership Project2, letter
It is referred to as 3GPP 2) introduce PCC as CDMA access (Code Division Multiple
Access, referred to as CDMA) 2000 networks resources control mechanism.Fig. 4 is according to phase
Pass technology be used without reverse tunnel mobile Internet Protocol (Mobile Internet
Protocol, referred to as MIP) the PCC framework that introduces of the CDMA2000 network of agreement
Schematic diagram；As shown in Figure 4, the CDMA2000 of reverse tunnel MIP agreement is not carried in use
Framework each network entity function that network introduces PCC is as follows:
Home agent (Home Agent, referred to as HA) is the function network in MIP network
Unit, it functions primarily as anchor point when terminal moves under MIP network, i.e. eventually
End roams, or when there is access network switching, HA distributes to the ownership of terminal
IP address is the most constant so that terminal, when being moved, ensure that Correspondent Node all the time
The home IP address being distributed to terminal by HA finds this terminal.HA also conduct simultaneously
The destination node in MIP tunnel.
Foreign Agent (Foreign Agent, referred to as FA) is the function in MIP network
Network element, wherein, major function is for terminal distribution local ip address.When terminal roams,
Or when there is access network switching, terminal is currently located the FA of network and will divide for terminal
Join a local IP address.FA simultaneously can also be as the destination node in MIP tunnel.
Packet data serving node (Packet Date Serving Node, referred to as PDSN)
To access device, such as, Packet Control Function entity (Packet Control Function,
Referred to as PCF) the A10/A11 interface of open standard, pass for data message for setting up
Defeated and QoS controls A10 and connects, meanwhile, and PDSN or Radio Access Network and outer portion
The gateway of group IP network, route the data message of terminal and external IP network, controls
System and forwarding.CDMA2000 network does not carry the situation of reverse tunnel MIP agreement using
Under realized FA function by PDSN.
Use foreign agent care-of address (the FA-Care of not carrying reverse tunnel
Address, referred to as MIP FA-CoA) message routing of CDMA2000 network of pattern
Principle: set up unidirectional MIP tunnel after MIP registration process between HA and FA,
During business is carried out, the route to IP message enforcement in the following manner:
For forward-flow, (that is, external network is sent to IP stream (the From External of terminal
IP network), carry HoA address) when arriving HA, IP message is carried out by HA
Reseal, carries again CoA address, is sent to FA, FA through unidirectional MIP tunnel
When receiving forward-flow, IP message is decapsulated, remove CoA address, send
Terminal to IP heading HoA mark.
For reverse flow, (that is, terminal is sent to IP stream (the to ExternalIP of external network
Network), carry Correspondent Node address) when arriving FA, FA is according to normal route
Mode is routed directly to external network, and transmits without unidirectional MIP tunnel.
PCC is realizing the CDMA2000 enforcement control without reverse tunnel MIP agreement
Time:
When forward-flow (external network is sent to the IP of terminal and flows) is controlled, PCEF
Function realizes on HA, and the function of BBERF realizes on PDSN/FA.
When reverse flow (terminal is sent to the IP of external network and flows) is controlled, it is not required to
Want BBERF function, and the function of PCEF realizes (that is, PCEF on PDSN/FA
FA-CoA without reverse tunnel)。
3GPP defines the PCC framework shown in Fig. 1 when being deployed in 3GPP network, BBERF
Being distributed in the different network equipments with PCEF function, such as, BBERF is positioned at gateway
(Serving Gateway, referred to as S-GW), PCEF is positioned at packet data gateway (Packet
Data Network Gateway, referred to as P-GW).3GPP network is being carried out by PCC
Service implementation policy control time, PCRF needs simultaneously to hairpin under S-GW and P-GW
Control strategy (QoS rule or PCC rule) to business data flow.In order to ensure
S-GW and P-GW carries out the uniformity of policy control to business data flow, is formally carrying out
Before business, PCRF is firstly the need of according to ID, PDN mark, local ip address
In any two associations completing gateway control session and IP-CAN session.The most certain
After executing association, PCRF could produce QoS rule according to the PCC rule being supplied to PCEF
Then, and providing program to be handed down to BBERF by corresponding QoS, collateral security is to business number
Implement correct policy control according to stream and charging controls.
But, introduce at the CDMA2000 network being used without reverse tunnel MIP agreement
When resource is controlled by PCC, for the control of forward-flow, BBERF is positioned at PDSN,
PCEF is positioned at HA；For the control of reverse flow, without BBERF function, PCEF is positioned at
PDSN.Therefore, during business is carried out, PDSN need to realize simultaneously BBERF and
The function of PCEF, PCC existing procedure and relation mechanism be just difficult to ensure that HA (PCEF),
Session association correctness between PDSN (HA/PCEF) and PCRF, thus cannot expire
The forward and backward business data flow in the case of this contained business packet enough implements correct strategy control
Demand processed.
Summary of the invention
The forward and backward business in the case of cannot meeting this for correlation technique, business packet contained
Data stream is implemented the problem of correct policy control demand and is proposed the present invention, to this end, this
Bright main purpose is to provide the session association scheme of a kind of improvement, to solve the problems referred to above.
According to an aspect of the invention, it is provided a kind of session association method.
Session association method according to the present invention includes: "Policy and Charging Rules Function entity from
Packet data serving node obtains first network agreement and connects the request of access network session establishment, builds
Vertical first network agreement connects access network session；"Policy and Charging Rules Function entity is from ownership
Agency obtains the second procotol and connects the request of access network session establishment, sets up the second network association
View connects access network session；"Policy and Charging Rules Function entity completes first network agreement even
Connect access network session and the association of the second procotol connection access network session, and complete network
Agreement connects access network session and the association of gateway control session.
Preferably, first network agreement connects access network session and the second procotol connects
Networking session is to set up the procotol needed for same Packet Data Network connects to connect access network meeting
Words.
Preferably, first network agreement connects the request of access network session establishment and the second network association
View connection access network session establishment request carries ID and Packet Data Network's mark.
Preferably, first network agreement connects the request of access network session establishment and the second network association
View connection access network session establishment request also carries internet protocol address.
Preferably, "Policy and Charging Rules Function entity completes the connection access of first network agreement
Net session and the second procotol connect the association of access network session and include: strategy and charging are advised
Then functional entity is according to appointing in ID, Packet Data Network's mark, internet protocol address
Two information of anticipating complete first network agreement and connect access network session and the connection of the second procotol
The association of access network session.
Preferably, "Policy and Charging Rules Function entity completes procotol connection access network meeting
The association of words and gateway control session includes: "Policy and Charging Rules Function entity is according to user
Any two information in mark, Packet Data Network's mark, internet protocol address complete network
Agreement connects access network session and the association of gateway control session.
Preferably, first network agreement connects access network session and the second procotol connects
The association of networking session, and procotol connects access network session and gateway control session
It is associated in subscriber equipment and is initially attached to network, or cut in subscriber equipment generation access network
Occur when changing.
According to an aspect of the invention, it is provided a kind of session association method.
"Policy and Charging Rules Function entity according to the present invention includes: the first acquisition module,
Please for obtaining first network agreement connection access network session establishment from packet data serving node
Ask；First sets up module, is used for setting up first network agreement and connects access network session；Second
Acquisition module, connects access network session establishment for obtaining the second procotol from home agent
Request；Second sets up module, is used for setting up the second procotol and connects access network session；The
One relating module, has been used for first network agreement and has connected access network session and the second network association
View connects the association of access network session；Second relating module, has been used for procotol and has connected
Access network session and the association of gateway control session.
Preferably, the first relating module is additionally operable to connect access network meeting according to first network agreement
Words set up request and the second procotol connects the user carried in the request of access network session establishment
Any two information in mark, Packet Data Network's mark, internet protocol address complete first
Procotol connects access network session and the association of the second procotol connection access network session.
Preferably, the second relating module is additionally operable to connect access network meeting according to first network agreement
Words set up request and the second procotol connects the user carried in the request of access network session establishment
Any two information in mark, Packet Data Network's mark, internet protocol address complete network
Agreement connects access network session and the association of gateway control session.
By the present invention, PCRF is according to an IP-CAN session establishment request and second
IP-CAN session establishment has asked an IP-CAN session and the 2nd IP-CAN session
Association, and complete the association of IP-CAN session and gateway control session, solve relevant skill
The forward and backward business data flow that business packet is contained in the case of cannot meeting this by art is implemented correct
The problem of policy control demand, and then ensure that the correctness of session association.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes this Shen
A part please, the schematic description and description of the present invention is used for explaining the present invention, and
Do not constitute inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the 3GPP PCC R8 framework according to correlation technique；
Fig. 2 is the interaction diagrams that the gateway control session according to correlation technique is set up；
Fig. 3 is the interaction diagrams of the IP-CAN session establishment according to correlation technique；
Fig. 4 is to be used without reverse tunnel MIP agreement according to correlation technique
The schematic diagram of the PCC framework that CDMA2000 network introduces；
Fig. 5 is the flow chart of session association method according to embodiments of the present invention；
Fig. 6 be according to embodiments of the present invention one IP-CAN session between association and IP-CAN
The flow chart that session associates with gateway control session；
After Fig. 7 is the session association success of according to embodiments of the present invention two, business is carried out
The flow chart of PCC policy control；
Fig. 8 is the IP-CAN session termination of according to embodiments of the present invention three, cancels session and closes
The flow chart of connection；
Fig. 9 is the structured flowchart of PCRF according to embodiments of the present invention.
Detailed description of the invention
Functional overview
The CDMA2000 network being used without reverse tunnel MIP agreement is being carried out by PCC
During service implementation policy control, according to the framework of Fig. 2, need to implement PCEF on HA
Function, and need to realize PCEF and BBERF function on PDSN simultaneously.PCC is existing
Having session association mechanism cannot meet the session association demand under this framework, the present invention is real
Executing example and provide the session association scheme of a kind of improvement, PCRF is according to an IP-CAN session
Set up request and the 2nd IP-CAN session establishment has asked an IP-CAN session and the
The association of two IP-CAN sessions, and complete the pass of IP-CAN session and gateway control session
Connection, carries out the CDMA2000 being used without reverse tunnel MIP agreement reaching PCC
The purpose that the correct implementation strategy of business controls.
It should be noted that in the case of not conflicting, the embodiment in the application and enforcement
Feature in example can be mutually combined.Come below with reference to the accompanying drawings and in conjunction with the embodiments specifically
The bright present invention.
Embodiment of the method
According to embodiments of the invention, it is provided that a kind of session association method.Its invention thought
As follows:
Fig. 5 is the flow chart of session association method according to embodiments of the present invention, such as Fig. 5 institute
Showing, the method includes that steps S502 is to step S506:
Step S502, PCRF obtains an IP-CAN session establishment request from PDSN,
Setting up an IP-CAN session with PDSN, wherein, an IP-CAN session establishment please
ID and PDN mark is carried, it is preferable that IP address can also be carried in asking.
Specifically, PCRF obtains an IP-CAN session establishment request from PDSN, and
IP-CAN session 1 is set up with PDSN；Wherein, PCRF builds from an IP-CAN session
Vertical request obtains ID, PDN mark, IP address, ID here, PDN
Mark, IP address are for unique mark the oneth IP-CAN session on PDSN.
Step S504, PCRF obtains the 2nd IP-CAN session establishment request from HA, with
HA sets up the 2nd IP-CAN session, wherein, takes in the 2nd IP-CAN session establishment request
Identify with ID and PDN, it is preferable that can also carry IP address, first
Needed for same PDN connection is set up in IP-CAN session and the 2nd IP-CAN session
IP-CAN session.
Specifically, PCRF obtains the 2nd IP-CAN session establishment from HA and asks, and and
HA sets up the 2nd IP-CAN session, and wherein, PCRF is from the 2nd IP-CAN session establishment
Request obtains ID, PDN mark, IP address, ID here, PDN
Mark, IP address are for unique mark the 2nd IP-CAN session on HA.
Step S506, PCRF is according to an IP-CAN session establishment request and second
IP-CAN session establishment has asked an IP-CAN session and the pass of IP-CAN session
Connection, and complete the association of IP-CAN session and gateway control session.The operation of this step can
To be initially attached to network at subscriber equipment, or switch in subscriber equipment generation access network
Shi Fasheng.
Wherein, PCRF is according to any two in ID, PDN mark, IP address
Information completes an IP-CAN session and the association of IP-CAN session, and completes
IP-CAN session and the association of gateway control session.If an IP-CAN session establishment please
Ask the IP address carried different with the IP address that the 2nd IP-CAN session establishment request is carried,
Then PCRF has identified an IP-CAN session and second according to ID and PDN
The association of IP-CAN session.
Below in conjunction with example, the embodiment of the present invention is realized process to be described in detail.
Embodiment one
This embodiment gives terminal and be attached to employing without reverse tunnel MIP agreement
Attachment flow during CDMA2000 network.Fig. 6 is according to embodiments of the present invention one
The flow process that between IP-CAN session, association and IP-CAN session associate with gateway control session
Figure, as shown in Figure 6, this flow process includes that steps S601 is to step S613:
Step S601, terminal is attached to network, initially sets up the connection of L2 layer.And perform
Authentication procedure.During Authentication Authorization, pass through if authorized, then AAA is by user couple
The CAMEL-Subscription-Information answered is handed down to PDSN/FA.
Step S602, terminal initiates Agent Solicitation to FA/PDSN.
Step S603, after FA Receiving Agent request message, returns agent advertisement to terminal and disappears
Breath, carries the CoA address of FA in this agent advertisement message.
Step S604, terminal initiates MIP registration request message, this MIP to FA/PDSN
Login request message comprises ID, PDN mark and the Life Cycle of MIP registration
Phase.When FA receives this MIP registration request message, need according to user signing contract information,
Judge that the PDN that terminal sends identifies whether legal.If in MIP registration request message
Do not comprise PDN mark, then FA thinks that terminal request is connected to default PDN network.
Additionally, FA HA to be selected.
Step S605, FA/PDSN (BBERF) initiates gateway control session to PCRF
Set up request, and the information such as ID, PDN mark are sent to PCRF,
Gateway control session is set up between FA/PDSN and PCRF.
Step S606, FA initiates MIP registration request message to HA, and this MIP registration please
Seek information such as carrying ID, PDN mark, CoA address in message.
Step S607, FA initiates IP-CAN session 1 to PCRF and sets up request, should
IP-CAN session 1 is set up in request and is comprised ID, PDN mark, CoA address etc.
Information.Authorize through PCRF, between PCRF and HA, set up IP-CAN session 1.
Step S608, HA (PCEF) from FA receive MIP registration request, and according to
IP-CAN session 1 set up request in information, from authentication and authorization charging (Authentication,
Authorization and Accounting, referred to as AAA) obtain user and contract relevant letter
Breath, completes CoA address and the binding of HoA address.Meanwhile, IP-CAN is initiated to PCRF
Request is set up in session 2, and this IP-CAN session 2 is set up in request and comprised ID, PDN
The information such as mark, CoA address, HoA address.After authorizing through PCRF,
IP-CAN session 2 is set up between HA and PCRF.
Step S609, according to the information received from FA/PDSN and the information received from HA,
PCRF completes the association of IP-CAN session 1 and IP-CAN session 2, completes simultaneously
IP-CAN session and the association of gateway control session.
Step S610, after HA and PCRF sets up IP-CAN session, HA and AAA
Alternately, HA address is sent to AAA.
Step S611, HA returns MIP registration reply message, this MIP to FA/PDSN
Registration reply message comprises ID, HoA address, HA address, MIP Life Cycle
The information such as phase.
Step S612, if QoS changes, then PCRF needs the QoS of amendment
Rule provides program to be handed down to FA/PDSN by gateway control and QoS rule.
Step S613, FA/PDSN returns MIP registration reply message, this MIP to terminal
Registration reply message comprises the information such as ID, HoA address, HA address.
After MIP succeeds in registration, between terminal and FA/PDSN and FA and HA
Between set up forward direction MIP tunnel.And between terminal and FA/PDSN, set up reverse MIP
Tunnel.For forward-flow, it is possible to implement plan on HA and PDSN according to PCC strategy
Slightly control；For reverse flow, it is possible to according to PCC strategy implementation strategy control on PDSN
System.
Embodiment two
When user is successfully attached to network, build between BBERF (PDSN) and PCRF
Vertical gateway control session, IP-CAN meeting between PCEF (PDSN/HA) and PCRF
After words, user can commence business, and business can be carried out the network of use by PCRF
Resource implements dynamic policy control.Fig. 7 is the session association of according to embodiments of the present invention two
After success, business is carried out the flow chart of PCC policy control, as it is shown in fig. 7, business is opened
During exhibition, the flow process of service implementation policy control is included that steps S701 is to step
S714:
Step S701, successful implementation adhere to after, terminal is commenced business, first and application
Layer AF completes the negotiation about business information, the Business Stream (example contained including the business packet carried out
As, audio stream, video flowing etc.), each Business Stream use address port five-tuple information,
Each Business Stream transmits encoding and decoding, the information such as desire bandwidth used.
Step S702, after completing application layer business information and consulting, business is correlated with by AF
Information is handed down to h-PCRF with the form of Diameter AAR message.
Step S703, after h-PCRF receives Diameter AAR message, returns
Diameter AAA responds.
Step S704, terminal, after completing application layer business information and consulting, is initiated to network
Request is set up in IP-CAN carrying needed for traffic streams, i.e. need in attaching process
The IP-CAN session set up is modified.Request message comprise relevant with Business Stream
The information such as request QoS.
Step S705, after PCEF receives request message, the request that terminal is sent
In message, the information relevant to forward-flow, by HA with the form of Diameter CCR message
Report h-PCRF, ask to use Internet resources to carry out policy authorization for forward business stream.Right
Pass through with the form of Diameter CCR message by PDSN in the information relevant to reverse flow
V-PCRF reports h-PCRF, asks to use Internet resources to carry out strategy for Reverse Traffic
Authorize.
Step S706, PCRF preserves the information received from PDSN and HA.
Step S707, if now PCRF does not also have and user-dependent CAMEL-Subscription-Information, then
User signing contract information is obtained from SPR.
Step S708, according to the service negotiation information of application layer, user request information, user
CAMEL-Subscription-Information, carrier policy etc., be respectively, by PCRF, the forward business stream that business is relevant
PCC rule is worked out respectively with Reverse Traffic, and according to IP-CAN session and gateway control
The result (that is, embodiment one) of session association, for corresponding gateway control session produce and
The QoS Rule Information that PCC rule is corresponding.
Step S709, h-PCRF performs gateway control and QoS provides program, passes through
QoS Rule Information is handed down to by v-PCRF with the form of Diameter RAR message
BBERF (PDSN) performs.
Step S710, BBERF (PDSN) performs QoS rule for forward-flow, and will
QoS rule is installed in the carrying of correspondence.
Step S711, BBERF (PDSN) is disappeared with Diameter RAA by v-PCRF
The form of breath returns response to h-PCRF.
Step S712, simultaneously according to IP-CAN session association information, h-PCRF respectively will
The PCC rule worked out for forward-flow and the PCC for reverse flow formulation are regular, pass through
The form of Diameter CCA message is handed down to PCEF (HA), PCEF (PDSN) respectively
Perform.
Step S713, PCEF (HA and PDSN) receives the PCC rule that issues
After, implementation strategy, installation rule, rule is tied to regular the holding with corresponding QoS
In load.
Step S714, PCEF returns IP-CAN session modification to terminal and successfully responds.
By IP-CAN session modification program, can be that the Business Stream that business packet contains sets up tool
The IP-CAN having corresponding QoS guarantee carries.During business is carried out, PCRF is permissible
Internet resources are used to provide the QoS guarantee of correspondence for Business Stream, it is possible to provide corresponding meter
Take control.
Embodiment three
In service ending, or when terminal needs to leave network, need to terminate accordingly
IP-CAN session.On PCRF, now need to delete corresponding PCC rule and QoS advises
Then, delete corresponding session association information simultaneously.Fig. 8 is according to embodiments of the present invention three
IP-CAN session termination, cancels the flow chart of session association, as shown in Figure 8, this flow process
Including steps S801 to step S814:
Step S801, terminal initiates IP-CAN session eventually to PCEF (HA and PDSN)
Only request.
Step S802, BBERF (PDSN) is passed through by Diameter CCR message
V-PCRF initiates gateway control session to h-PCRF and terminates request.
Step S803, h-PCRF identifies that gateway control session terminates request, and according to session
Incidence relation recognizes the IP-CAN session associated with gateway control session.H-PCRF deletes
The QoS rule associated with gateway control session.
Step S804, h-PCRF returns net by v-PCRF to BBERF (PDSN)
Close and control session termination response (Diameter CCA message).
Step S805, BBERF (PDSN) receives response, deletes corresponding QoS rule,
Terminate gateway control session.
Step S806, PCEF (PDSN and HA) passes through Diameter CCR message warp
Cross v-PCRF and send the request of IP-CAN session termination to h-PCRF.
Step S807, h-PCRF recognizes this IP-CAN session and gateway control session pair
Should, and recognize and the AF session of this IP-CAN session association.H-PCRF deletes and should
The PCC rule of IP-CAN session association.
Step S808, h-PCRF is returned to PCEF (PDSN and HA) by v-PCRF
Return IP-CAN session termination response (Diameter CCA message).
Step S809, PCEF (PDSN and HA) deletes and IP-CAN session association
PCC Rule Information, terminates IP-CAN session.
Step S810, PCEF (PDSN and HA) returns IP-CAN session to UE and deletes
Except response.
Step S811, h-PCRF sends Diameter ASR message to AF, indicates session
Terminate.
Step S812, AF returns Diameter ASA response to h-PCRF.
Step S813, AF sends the instruction AF meeting of Diameter STR message to h-PCRF
Words terminate.
Step S814, h-PCRF returns the response (Diameter of AF session termination to AF
STA message).
Device embodiment
According to embodiments of the invention, it is provided that a kind of PCRF.Fig. 9 is according to the present invention
The structured flowchart of the PCRF of embodiment, as it is shown in figure 9, this PCRF includes: first builds
Formwork erection block 2, second sets up module 4, the first relating module 6, the second relating module 8, and
One acquisition module 12, the second acquisition module 14, below said structure is described.
First acquisition module 12, please for obtaining an IP-CAN session establishment from PDSN
Ask；First sets up module 2, is connected to the first acquisition module 12, for obtaining according to first
The IP-CAN session establishment request that module 12 obtains sets up first with PDSN
IP-CAN session, wherein, carries ID in an IP-CAN session establishment request
Identify with PDN, it is preferable that also carry IP address.
Second acquisition module 14, for obtaining the 2nd IP-CAN session establishment request from HA；
Second sets up module 4, is connected to the second acquisition module 14, for according to the second acquisition module
14 the 2nd IP-CAN session establishment requests obtained set up the 2nd IP-CAN session with HA,
Wherein, the 2nd IP-CAN session establishment request carries ID and PDN mark,
Preferably, IP address, wherein, an IP-CAN session and the 2nd IP-CAN are also carried
Session is to set up the IP-CAN session needed for same PDN connects.
First relating module 6, is connected to first and sets up module 2 and second and set up module 4, uses
Set up after module 4 completes to set up IP-CAN session in setting up module 2 and second first,
Complete an IP-CAN session and the association of IP-CAN session；Second relating module 8, even
It is connected to the first acquisition module 12 and the second acquisition module 14, for according to the first acquisition module
The 12 IP-CAN session establishments requests obtained and the second acquisition module 14 obtain the
Two IP-CAN session establishments have asked the association of IP-CAN session and gateway control session.
Wherein, the first relating module is according to appointing in ID, PDN mark, IP address
Two information of anticipating complete an IP-CAN session and the association of IP-CAN session；Second closes
Gang mould block completes according to any two information in ID, PDN mark, IP address
IP-CAN session and the association of gateway control session.
It should be noted that the first relating module can initially be attached to network at subscriber equipment,
Or complete operation associated when subscriber equipment generation access network switches；Second relating module
Can initially be attached to network at subscriber equipment, or cut in subscriber equipment generation access network
Complete operation associated when changing.
In sum, the above embodiment of the present invention is passed through, it is provided that the session of a kind of improvement
Association scheme, PCRF is according to the IP-CAN session establishment request obtained from PDSN
An IP-CAN session has been asked with the 2nd IP-CAN session establishment obtained from HA
With the association of the 2nd IP-CAN session, and complete IP-CAN session and gateway control session
Association, it is achieved that the PCC CDMA2000 to being used without reverse tunnel MIP agreement
Correct implementation strategy of commencing business controls.
Obviously, those skilled in the art should be understood that the above-mentioned present invention each module or
Each step can realize with general calculating device, and they can concentrate on single calculating
On device, or it is distributed on the network that multiple calculating device is formed, alternatively, they
Can realize with calculating the executable program code of device, it is thus possible to they are stored
Performed by calculating device in the storage device, or it is integrated that they are fabricated to respectively
Circuit module, or the multiple modules in them or step are fabricated to single integrated circuit mould
Block realizes.So, the present invention is not restricted to the combination of any specific hardware and software.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention,
For a person skilled in the art, the present invention can have various modifications and variations.All
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made,
Should be included within the scope of the present invention.
Claims (5)
1. a session association method, it is characterised in that including:
"Policy and Charging Rules Function entity obtains first from packet data serving node
Procotol connects the request of access network session establishment, sets up first network agreement and connects
Networking session；
Described "Policy and Charging Rules Function entity obtains the second network from home agent
Agreement connects the request of access network session establishment, sets up the second procotol and connects access network
Session；
Described "Policy and Charging Rules Function entity completes described first network agreement even
Connect access network session and the association of described second procotol connection access network session, and
Complete procotol and connect access network session and the association of gateway control session；
Wherein, described first network agreement connects the request of access network session establishment with described
Second procotol connect access network session establishment request in carry ID and
Packet Data Network identifies；
Described first network agreement connects access network session establishment request and described second
Procotol connection access network session establishment request also carries internet protocol address；
Described "Policy and Charging Rules Function entity completes described first network agreement even
Connect access network session and the association bag of described second procotol connection access network session
Include:
Described "Policy and Charging Rules Function entity according to described ID, described point
Any two information in group data network mark, described internet protocol address complete described
First network agreement connects access network session and described second procotol connects access
The association of net session；
Wherein, described first network agreement connects access network session and described second network
It is to set up the network needed for same Packet Data Network connects that agreement connects access network session
Agreement connects access network session.
Method the most according to claim 1, it is characterised in that described strategy and charging rule
Then functional entity completes the connection access network session of described procotol and gateway control meeting
The association of words includes:
Described "Policy and Charging Rules Function entity according to described ID, described point
Any two information in group data network mark, described internet protocol address complete described
Procotol connects access network session and the association of gateway control session.
Method the most according to any one of claim 1 to 2, it is characterised in that described
First network agreement connects access network session and described second procotol connects access
The association of net session, and described procotol connects access network session and gateway control
The subscriber equipment that is associated in of session is initially attached to network, or occurs at subscriber equipment
Occur during access network switching.
4. a "Policy and Charging Rules Function entity, it is characterised in that including:
First acquisition module, for obtaining first network association from packet data serving node
View connects the request of access network session establishment；
First sets up module, is used for setting up first network agreement and connects access network session；
Second acquisition module, connects for obtaining the second procotol from home agent
Networking session establishment is asked；
Second sets up module, is used for setting up the second procotol and connects access network session；
First relating module, has been used for described first network agreement and has connected access network meeting
Words and described second procotol connect the association of access network session；
Second relating module, has been used for procotol and has connected access network session and gateway
Control the association of session；
Wherein, described first relating module is additionally operable to according to described first network agreement even
Connect the request of access network session establishment and described second procotol connects access network session
ID, the Packet Data Network carried in foundation request identify, internet protocol address
In any two information complete described first network agreement connect access network session and
Described second procotol connects the association of access network session；
Wherein, described first network agreement connects access network session and described second network
It is to set up the network needed for same Packet Data Network connects that agreement connects access network session
Agreement connects access network session.
"Policy and Charging Rules Function entity the most according to claim 4, its feature exists
In,
Described second relating module is additionally operable to connect according to described first network agreement
The request of networking session establishment and described second procotol connect access network session establishment
The described ID carried in request, described Packet Data Network mark, described network
Any two information in protocol address complete described procotol and connect access network meeting
Words and the association of gateway control session.
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| CN200910160762.7A CN101959258B (en) | 2009-07-15 | 2009-07-15 | Session association method and "Policy and Charging Rules Function entity |
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| CN200910160762.7A CN101959258B (en) | 2009-07-15 | 2009-07-15 | Session association method and "Policy and Charging Rules Function entity |
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| CN103269334B (en) | 2013-04-24 | 2017-06-20 | 华为技术有限公司 | Session association method, apparatus and system |
| CN104955085A (en) * | 2014-03-24 | 2015-09-30 | 中兴通讯股份有限公司 | Method for application detection control under roaming scene and V-PCRF |
| CN110048951B (en) * | 2018-01-16 | 2020-11-27 | 中国移动通信有限公司研究院 | PCF addressing method and device, equipment and storage medium |
| US20190313311A1 (en) * | 2018-04-09 | 2019-10-10 | Mediatek Inc. | Apparatuses, service networks, and methods for handling plmn-specific parameters for an inter-plmn handover |
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| CN101150418A (en) * | 2007-10-17 | 2008-03-26 | 中兴通讯股份有限公司 | A selection method for policy billing control server |
| CN101227391A (en) * | 2008-01-09 | 2008-07-23 | 中兴通讯股份有限公司 | Tactics under non-roaming condition and method for selecting charging regulation function entity |
| CN101369901A (en) * | 2007-08-15 | 2009-02-18 | 华为技术有限公司 | Method, apparatus and system for associating policy and charging execution function entity |
| CN101384076A (en) * | 2007-09-04 | 2009-03-11 | 华为技术有限公司 | Processing method, switching method for policy and charging control, system and device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101369901A (en) * | 2007-08-15 | 2009-02-18 | 华为技术有限公司 | Method, apparatus and system for associating policy and charging execution function entity |
| CN101384076A (en) * | 2007-09-04 | 2009-03-11 | 华为技术有限公司 | Processing method, switching method for policy and charging control, system and device |
| CN101150418A (en) * | 2007-10-17 | 2008-03-26 | 中兴通讯股份有限公司 | A selection method for policy billing control server |
| CN101227391A (en) * | 2008-01-09 | 2008-07-23 | 中兴通讯股份有限公司 | Tactics under non-roaming condition and method for selecting charging regulation function entity |
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