CN101959258A - Session association method as well as policy and charging rule function (PCRF) entity - Google Patents

Session association method as well as policy and charging rule function (PCRF) entity Download PDF

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Publication number
CN101959258A
CN101959258A CN2009101607627A CN200910160762A CN101959258A CN 101959258 A CN101959258 A CN 101959258A CN 2009101607627 A CN2009101607627 A CN 2009101607627A CN 200910160762 A CN200910160762 A CN 200910160762A CN 101959258 A CN101959258 A CN 101959258A
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session
access network
procotol
network session
pcrf
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CN101959258B (en
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毛玉欣
毕以峰
吴锦花
芮通
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Shenzhen Zhongrong fortune Trade Co. Ltd
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ZTE Corp
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Abstract

The invention discloses session association method and a as well as policy and charging rule function (PCRF) entity. The method comprises the following steps of obtaining a session establishment request on connecting a first network protocol with an access network from a grouped data service node and establishing a session of connecting the first network protocol with the access network, by the PCRF entity; obtaining a session establishment request on connecting a second network protocol with the access network from a home agent and establishing a session of connecting the second network protocol with the access network, by PCRF entity; and finishing association of the session of connecting the first network protocol with the access network and the session of connecting the second network protocol with the access network and finishing association of a session of connecting a network protocol with the access network and a gateway controlled session, by the PCRF entity. The invention ensures the correctness of session association.

Description

Session association method and "Policy and Charging Rules Function entity
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 abbreviates PCRF as).
Background technology
Third generation partner program (3rd Generation Partnership Project, abbreviate 3GPP as) defined strategy and charging control architecture (Policy andCharging Control at the mobile network, abbreviate PCC as), Fig. 1 is the schematic diagram according to the 3GPP PCCR8 framework of correlation technique, as shown in Figure 1, the following description of each entity function:
PCRF carries out the formulation and the management of service quality (Quality of Service abbreviates QoS as) and charging policy for the professional business data flow that comprises uses Internet resources.PCRF is divided into ownership PCRF (home PCRF abbreviates h-PCRF as) and visit PCRF (visitPCRF abbreviates v-PCRF as), and wherein, h-PCRF is positioned at home network, and v-PCRF is positioned at roaming network.
Strategy and charging execution function entity (Policy and Charging EnforcementFunction, abbreviate PCEF as) be used to carry out that PCRF issues or the last pre-configured PCC rule of PCEF, IP message to transmission over networks detects, discern the business data flow that this IP message is subordinate to, and provide QoS and the control of chargeing business data flow.
The IP message that bearing binding and reporting events function (Bearer Binding and Event ReportFunction abbreviates BBERF as) are mainly used in transmission over networks detects, and the IP message is mapped on the corresponding bearer path according to rule.In addition, BBERF also carries out reporting of carrying gateway dependent event, for example, when carrying is lost, when the access network switching perhaps takes place, all needs events corresponding is reported PCRF, and request PCRF does corresponding decision-making.
In addition, user-subscribed database (Subscription Profile Repository abbreviates SPR as) is used to preserve the business information that the user contracts, and provides necessary user signing contract information for PCRF works out the PCC rule.Online Charging System (Online Charging System abbreviates OCS as) and off-line accounting system (Offline Charging System abbreviates OFCS as) are respectively applied for online and offline charging.
PCRF passes through the mutual of Gx, Gxa, Sp, Rx interface realization and PCEF, BBERF, SPR, AF respectively, and PCEF passes through the mutual of Gy, the realization of Gz interface and OCS, OFCS respectively.
The PCC framework is as follows to the principle of the service implementation policy control transmitted on the bearer network:
At first, PCRF is before the user formally carries out concrete business, set up gateway control session, procotol connection Access Network (InternetProtocol Connection Access Network between needs and BBERF, the PCEF respectively, abbreviate IP-CAN as) session, and to set up gateway control session and IP-CAN session association (its flow process such as Fig. 2, shown in Figure 3, will be described in detail below), to guarantee on BBERF and PCEF, to implement the consistency of control strategy at particular traffic data stream.
After this, carry out in the process, work out corresponding strategy according to application layer consultation business service information, user signing contract information, carrier policy etc. for the professional business data flow that comprises by PCRF in business, comprise sign stream five-tuple information, authorize information such as bandwidth.And strategy is handed down to BBERF with the QoS rule format, be handed down to PCEF with the PCC rule format.When the IP message arrived PCEF, BBERF, at first according to the five-tuple information matches IP message in the rule, and the IP message that will mate used corresponding carrying to transmit, and charges accordingly, with the effective control of realization to business.In addition, when business is carried out in the process, the change of business information taking place, for example, stopped a certain business data flow, also can discharge professional shared Internet resources in real time by PCC, reaches the purpose of business being carried out dynamic QoS control.
Introduce gateway control session related to the present invention below and flow process is set up in the IP-CAN session.Gateway control session and IP-CAN session meeting are set up when terminal is attached to network or request accessing group data net (Packet Data Network abbreviates PDN as) network.
Fig. 2 is the interaction diagrams of setting up according to the gateway control session of correlation technique, and as shown in Figure 2, the flow process that gateway control session is set up comprises that following step S201 is to step S208:
Step S201, BBERF receive the Indication message of setting up gateway control session from access network.
Step S202, BBERF initiates gateway control session by Diameter CCR message to PCRF and sets up request, and user ID, PDN sign, IP-CAN access style information are provided in this Diameter CCR message.If under the roaming condition, request message (that is Diameter CCR message) needs to send to h-PCRF through v-PCRF.
Step S203, PCRF receives request message, and the information that will wherein carry is preserved.
Step S204 if this moment, PCRF did not have and this user-dependent user signing contract information, then obtains user signing contract information from SPR.
Step S205, PCRF for the IP-CAN session that is about to set up generates PCC rule, the decision-making of generating strategy, and produce QoS rule according to the PCC rule according to above-mentioned information of obtaining and carrier policy.
Step S206, PCRF returns gateway control session by message to BBERF and sets up response, comprises the information such as QoS of QoS rule, default bearer in this Diameter CCA message.If roaming condition, response message (that is Diameter CCA message) is handed down to BBERF by h-PCRF by v-PCRF.
Step S207, the BBERF implementation strategy is installed the QoS rule that receives.
Step S208, BBERF return gateway control session and set up successful response.
Fig. 3 is the interaction diagrams of setting up according to the IP-CAN session of correlation technique, and as shown in Figure 3, the IP-CAN session is set up flow process and comprised that following step S301 is to step S311:
Step S301, BBERF detect UE and initiate IP-CAN session foundation request, set up gateway control session between BBERF and PCRF.In setting up process, user ID, PDN sign, IP-CAN access style are sent to PCRF.
Step S302, PCEF receive from the IP-CAN session of BBERF and set up request.
Step S303, PCEF initiates the IP-CAN session by Diameter CCR message to PCRF and sets up request, comprises information such as user ID, PDN sign, UE local ip address, IP-CAN access style, acquiescence charging method in this request message.If roaming condition, then request message sends to h-PCRF by v-PCRF.
Step S304, PCRF preserves the information that receives from PCEF.
Step S305, the user ID, the PDN that send according to PCEF identify, and the user ID of gateway control session establishment stage BBERF transmission and PDN sign, and PCRF finishes the related of gateway control session and IP-CAN session.
Step S306 if PCRF lacks this user-dependent user signing contract information at this moment, then obtains user signing contract information to SPR.
Step S307, according to above-mentioned information and carrier policy, PCRF carries out strategic decision-making, and selects or produce (formulation) PCC rule.
Step S308, PCRF provides PCC rule by Diameter CCA message to PCEF.If the situation of roaming, then the PCC rule needs h-PCRF to offer PCEF by v-PCRF.
Step S309, this moment, PCRF also needed to produce the QoS rule according to PCC rule, by gateway control and QoS rule provide program with up-to-date QoS algorithm to BBERF.
Step S310, PCEF receives and implementation strategy, and the PCC rule is installed.
Step S311, PCEF return the IP-CAN session and set up request responding.
Third generation partner program 2 (3rd Generation Partnership Project2 abbreviates 3GPP2 as) is introduced PCC inserts (Code Division MultipleAccess abbreviates CDMA as) 2000 networks as code division multiple access resource controlling mechanism.Fig. 4 is a schematic diagram of not being with the PCC framework that the CDMA2000 network of reverse tunnel mobile Internet Protocol (Mobile InternetProtocol abbreviates MIP as) agreement introduces according to the use of correlation technique; As shown in Figure 4, use each network entity function of framework of the CDMA2000 network introducing PCC that does not carry reverse tunnel MIP agreement as follows:
Home agent (Home Agent, abbreviate HA as) be the function network element in the MIP network, its major function is as terminal anchor point when mobile under the MIP network, promptly, terminal is roamed, and when the access network switching perhaps took place, the home IP address of being distributed to terminal by HA was constant all the time, make terminal when being moved, can guarantee that all the time Correspondent Node finds this terminal by the home IP address that HA distributes to terminal.HA is simultaneously also as the destination node in MIP tunnel.
Foreign Agent (Foreign Agent abbreviates FA as) is the function network element in the MIP network, and wherein, major function is to be the terminal distribution local ip address.When terminal is roamed, when access network perhaps taking place switching, the FA of the current place of terminal network will be the IP address of this locality of terminal distribution.FA also can be used as the destination node in MIP tunnel simultaneously.
Packet data serving node (Packet Date Serving Node, abbreviate PDSN as) to access device, for example, Packet Control Function entity (Packet Control Function, abbreviate PCF as) the A10/A11 interface of open standard, be used for setting up and be used for data message transmission and QoS and control A10 and be connected, simultaneously, PDSN still is the gateway of Radio Access Network and external packet IP network, and the data message of terminal and external IP network is carried out route, control and forwarding.The CDMA2000 network is using under the situation of not carrying reverse tunnel MIP agreement by PDSN realization FA function.
Adopt foreign agent care-of address (the FA-Care ofAddress that does not carry reverse tunnel, abbreviate MIP FA-CoA as) the message routing principle of the CDMA2000 network of pattern: through between HA and FA, setting up unidirectional MIP tunnel after the MIP registration process, carry out in the process in business, the IP message implemented the route of following mode:
For forward-flow (promptly, external network sends to the IP stream (From ExternalIP network) of terminal, carried the HoA address) when arriving HA, HA encapsulates again to the IP message, carries the CoA address again, sends to FA through unidirectional MIP tunnel, FA is when receiving forward-flow, the IP message is carried out decapsulation, remove the CoA address, send to the terminal of IP heading HoA sign.
For reverse flow (promptly, terminal sends to the IP stream (to External IPnetwork) of external network, carried the Correspondent Node address) when arriving FA, FA is routed directly to external network according to normal routing mode, and transmits without unidirectional MIP tunnel.
PCC is realizing when not implementing control with the CDMA2000 of reverse tunnel MIP agreement:
When controlling, the PCEF function realizes on HA for forward-flow (external network sends to the IP stream of terminal), and the function of BBERF realizes on PDSN/FA.
When controlling, do not need the BBERF function, and the function of PCEF realizes (that is PCEF forFA-CoA without reverse tunnel) for reverse flow (terminal sends to the IP stream of external network) on PDSN/FA.
When 3GPP definition PCC Business Information and IT Solution Mgmt Dep shown in Figure 1 is deployed in the 3GPP network, BBERF is distributed in the different network equipments with the PCEF function, for example, BBERF is positioned at gateway (Serving Gateway, abbreviate S-GW as), PCEF is positioned at packet data gateway (PacketData Network Gateway abbreviates P-GW as).PCC is when the service implementation policy control that the 3GPP network is carried out, and PCRF needs to give simultaneously S-GW and P-GW to issue control strategy (QoS rule or PCC rule) at business data flow.In order to guarantee business data flow to be carried out the consistency of policy control at S-GW and P-GW, before formally commencing business, PCRF at first needs to finish the related of gateway control session and IP-CAN session according to any two in user ID, PDN sign, the local ip address.After correct enforcement association, PCRF could produce the QoS rule according to the PCC rule that offers PCEF, and provides program to be handed down to BBERF by corresponding QoS, and collateral security is implemented correct policy control and charging control to business data flow.
Yet, using not when introducing PCC resource is controlled with the CDMA2000 network of reverse tunnel MIP agreement, for the control of forward-flow, BBERF is positioned at PDSN, and PCEF is positioned at HA; For the control of reverse flow, no BBERF function, PCEF is positioned at PDSN.Therefore, carry out in the process in business, PDSN need realize the function of BBERF and PCEF simultaneously, PCC existing procedure and relation mechanism just are difficult to guarantee the session association correctness between HA (PCEF), PDSN (HA/PCEF) and the PCRF, implement correct policy control demand thereby can't satisfy the forward direction and the reverse traffic data flow that in the case business are comprised.
Summary of the invention
Can't satisfy the forward direction and the reverse traffic data flow that in the case business are comprised at correlation technique implements the problem of correct policy control demand and proposes the present invention, for this reason, main purpose of the present invention is to provide a kind of improved session association scheme, to address the above problem.
According to an aspect of the present invention, provide a kind of session association method.
Session association method according to the present invention comprises: the "Policy and Charging Rules Function entity obtains first procotol from packet data serving node and connects Access Network session foundation request, sets up first procotol and connects the Access Network session; The "Policy and Charging Rules Function entity obtains second procotol from home agent and connects Access Network session foundation request, sets up second procotol and connects the Access Network session; The "Policy and Charging Rules Function entity is finished the session of first procotol connection Access Network and is connected the association of Access Network session with second procotol, and finishes the related of procotol connection Access Network session and gateway control session.
Preferably, first procotol connects the Access Network session is connected the Access Network session with second procotol is to set up same Packet Data Network to connect required procotol connection Access Network session.
Preferably, first procotol connects the Access Network session request of setting up and is connected the Access Network session with second procotol and sets up and carry user ID in asking and Packet Data Network identifies.
Preferably, first procotol connects the Access Network session request of setting up and is connected Access Network session foundation with second procotol and also carries internet protocol address in asking.
Preferably, the "Policy and Charging Rules Function entity is finished first procotol and connected the Access Network session and comprise with the association that second procotol is connected the Access Network session: the "Policy and Charging Rules Function entity is finished the session of first procotol connection Access Network is connected the Access Network session with second procotol association according to any two information in user ID, Packet Data Network's sign, the internet protocol address.
Preferably, the "Policy and Charging Rules Function entity is finished the association that procotol connects Access Network session and gateway control session and comprised: the "Policy and Charging Rules Function entity is finished procotol according to any two information in user ID, Packet Data Network's sign, the internet protocol address and is connected the related of Access Network session and gateway control session.
Preferably, first procotol connects the Access Network session is connected the Access Network session with second procotol association, and the subscriber equipment that is associated in of procotol connection Access Network session and gateway control session initially is attached to network, perhaps generation when subscriber equipment generation access network switches.
According to an aspect of the present invention, provide a kind of session association method.
"Policy and Charging Rules Function entity according to the present invention comprises: first acquisition module is used for obtaining first procotol from packet data serving node and connects Access Network session foundation request; First sets up module, is used to set up first procotol and connects the Access Network session; Second acquisition module is used for obtaining second procotol from home agent and connects Access Network session foundation request; Second sets up module, is used to set up second procotol and connects the Access Network session; First relating module is used to finish first procotol and connects the Access Network session is connected the Access Network session with second procotol association; Second relating module is used to finish procotol and connects the related of Access Network session and gateway control session.
Preferably, first relating module also be used for according to first procotol connect that the Access Network session request of setting up is connected with second procotol that user ID, the Packet Data Network that the Access Network session request of setting up carries identifies, any two information in the internet protocol address finish the session of first procotol connection Access Network is connected the Access Network session with second procotol association.
Preferably, second relating module also be used for according to first procotol connect that the Access Network session request of setting up is connected with second procotol that user ID, the Packet Data Network that the Access Network session request of setting up carries identifies, any two information in the internet protocol address finish the related of procotol connection Access Network session and gateway control session.
By the present invention, PCRF finishes the related of an IP-CAN session and the 2nd IP-CAN session according to the IP-CAN session request of setting up with the 2nd IP-CAN session request of setting up, and finish the related of IP-CAN session and gateway control session, solve correlation technique and can't satisfy the forward direction and the reverse traffic data flow that in the case business are comprised and implement the problem of correct policy control demand, and then guaranteed the correctness of session association.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the 3GPP PCC R8 framework of correlation technique;
Fig. 2 is the interaction diagrams of setting up according to the gateway control session of correlation technique;
Fig. 3 is the interaction diagrams of setting up according to the IP-CAN session of correlation technique;
Fig. 4 is the schematic diagram of the PCC framework do not introduced with the CDMA2000 network of reverse tunnel MIP agreement according to the use of correlation technique;
Fig. 5 is the flow chart according to the session association method of the embodiment of the invention;
Fig. 6 is according to association between the IP-CAN session of the embodiment of the invention one and the IP-CAN session flow chart related with gateway control session;
Fig. 7 is according to after the success of the session association of the embodiment of the invention two, business is carried out the flow chart of PCC policy control;
Fig. 8 is the IP-CAN session termination according to the embodiment of the invention three, the flow chart of cancellation session association;
Fig. 9 is the structured flowchart according to the PCRF of the embodiment of the invention.
Embodiment
Functional overview
PCC shown in the framework of Fig. 2, need implement the PCEF function, and need to realize simultaneously PCEF and BBERF function on PDSN when use is not commenced business implementation strategy control with the CDMA2000 network of reverse tunnel MIP agreement on HA.PCC existing session relation mechanism can't satisfy the session association demand under this framework, the embodiment of the invention provides a kind of improved session association scheme, PCRF finishes the related of an IP-CAN session and the 2nd IP-CAN session according to the IP-CAN session request of setting up with the 2nd IP-CAN session request of setting up, and finish the related of IP-CAN session and gateway control session, to reach PCC to using not the commence business purpose of correct implementation strategy control of CDMA2000 with reverse tunnel MIP agreement.
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Method embodiment
According to embodiments of the invention, provide a kind of session association method.Its invention thought is as follows:
Fig. 5 is the flow chart according to the session association method of the embodiment of the invention, and as shown in Figure 5, this method comprises that following step S502 is to step S506:
Step S502, PCRF obtains an IP-CAN session from PDSN and sets up request, sets up an IP-CAN session with PDSN, and wherein, an IP-CAN session is set up and is carried user ID and PDN sign in the request, preferably, can also carry the IP address.
Particularly, PCRF obtains an IP-CAN session from PDSN and sets up request, and sets up IP-CAN session 1 with PDSN; Wherein, PCRF sets up from an IP-CAN session and obtains user ID, PDN sign, IP address the request, and the user ID here, PDN sign, IP address are used for unique identification the one IP-CAN session on PDSN.
Step S504, PCRF obtains the 2nd IP-CAN session from HA and sets up request, set up the 2nd IP-CAN session with HA, wherein, the 2nd IP-CAN session is set up and is carried user ID and PDN sign in the request, preferably, can also carry the IP address, an IP-CAN session is to set up same PDN to be connected required IP-CAN session with the 2nd IP-CAN session.
Particularly, PCRF obtains the 2nd IP-CAN session from HA and sets up request, and and HA set up the 2nd IP-CAN session, wherein, PCRF sets up from the 2nd IP-CAN session and obtains user ID, PDN sign, IP address the request, and the user ID here, PDN sign, IP address are used for unique identification the 2nd IP-CAN session on HA.
Step S506, PCRF finishes the related of an IP-CAN session and IP-CAN session according to the IP-CAN session request of setting up with the 2nd IP-CAN session request of setting up, and finishes the related of IP-CAN session and gateway control session.The operation of this step can initially be attached to network at subscriber equipment, perhaps takes place when subscriber equipment generation access network switches.
Wherein, PCRF finishes the related of an IP-CAN session and IP-CAN session according to any two information in user ID, PDN sign, the IP address, and finishes the related of IP-CAN session and gateway control session.If the IP address that the IP-CAN session request of setting up is carried is different with the IP address that the 2nd IP-CAN session request of setting up is carried, then PCRF finishes the related of an IP-CAN session and the 2nd IP-CAN session according to user ID with the PDN sign.
Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.
Embodiment one
This embodiment has provided the attachment flow of terminal when being attached to employing not with the CDMA2000 network of reverse tunnel MIP agreement.Fig. 6 is according to association between the IP-CAN session of the embodiment of the invention one and the IP-CAN session flow chart related with gateway control session, and as shown in Figure 6, this flow process comprises that following step S601 is to step S613:
Step S601, terminal is attached to network, at first sets up the connection of L2 layer.And execution authentication procedure.In the Authentication Authorization process, pass through if authorize, then AAA is handed down to PDSN/FA with the CAMEL-Subscription-Information of user's correspondence.
Step S602, terminal is initiated Agent Solicitation to FA/PDSN.
Step S603, FA returns agent advertisement message to terminal after receiving Agent Solicitation, carries the CoA address of FA in this agent advertisement message.
Step S604, terminal is initiated the MIP login request message to FA/PDSN, comprises the life cycle of user ID, PDN sign and MIP registration in this MIP login request message.When FA receives this MIP login request message, need judge whether the PDN sign of terminal transmission is legal according to user signing contract information.If do not comprise the PDN sign in the MIP login request message, then FA thinks that terminal request is connected to default PDN network.In addition, FA also will select HA.
Step S605, FA/PDSN (BBERF) initiates gateway control session to PCRF and sets up request, and information such as user ID, PDN sign are sent to PCRF, sets up gateway control session between FA/PDSN and PCRF.
Step S606, FA initiates the MIP login request message to HA, carries information such as user ID, PDN sign, CoA address in this MIP login request message.
Step S607, FA initiates IP-CAN session 1 to PCRF and sets up request, and this IP-CAN session 1 is set up in the request and is comprised information such as user ID, PDN sign, CoA address.Authorize through PCRF, between PCRF and HA, set up IP-CAN session 1.
Step S608, HA (PCEF) receives the MIP register requirement from FA, and according to the information in the IP-CAN session 1 foundation request, from authentication and authorization charging (Authentication, Authorization and Accounting, abbreviate AAA as) obtain the signatory relevant information of user, finish the binding of CoA address and HoA address.Simultaneously, initiate IP-CAN session 2 to PCRF and set up request, this IP-CAN session 2 is set up in the request and is comprised information such as user ID, PDN sign, CoA address, HoA address.After authorizing, between HA and PCRF, set up IP-CAN session 2 through PCRF.
Step S609, according to information that receives from FA/PDSN and the information that receives from HA, PCRF finishes the related of IP-CAN session 1 and IP-CAN session 2, finishes the related of IP-CAN session and gateway control session simultaneously.
Step S610, after HA and PCRF set up the IP-CAN session, HA and AAA were mutual, and the HA address is sent to AAA.
Step S611, HA returns MIP registration reply message to FA/PDSN, comprises information such as user ID, HoA address, HA address, MIP life cycle in this MIP registration reply message.
Step S612, if QoS changes, then PCRF need provide program to be handed down to FA/PDSN by gateway control and QoS rule the QoS rule of revising.
Step S613, FA/PDSN returns MIP registration reply message to terminal, comprises information such as user ID, HoA address, HA address in this MIP registration reply message.
After MIP succeeds in registration, setting up forward direction MIP tunnel between terminal and the FA/PDSN and between FA and the HA.And between terminal and FA/PDSN, set up reverse MIP tunnel.For forward-flow, just can be according to the implementation strategy control on HA and PDSN of PCC strategy; For reverse flow, just can be according to the implementation strategy control on PDSN of PCC strategy.
Embodiment two
When the user successfully is attached to network, between BBERF (PDSN) and PCRF, set up gateway control session, after the IP-CAN session, the user can commence business between PCEF (PDSN/HA) and PCRF, and PCRF can implement dynamic policy control to the Internet resources that business is carried out use.Fig. 7 is according to after the success of the session association of the embodiment of the invention two, and business is carried out the flow chart of PCC policy control, and as shown in Figure 7, business is carried out in the process, and the flow process of service implementation policy control is comprised that following step S701 is to step S714:
Step S701, after successful implementation is adhered to, terminal is commenced business, at first finish negotiation about business information with application layer AF, comprise information such as the Business Stream (for example, audio stream, video flowing etc.) that the business of carrying out comprises, the address port five-tuple information that each Business Stream uses, the encoding and decoding that each Business Stream transmission is adopted, required bandwidth.
Step S702 finishes after the application layer business information consults, and AF is handed down to h-PCRF with service related information with the form of Diameter AAR message.
Step S703, h-PCRF receive after the Diameter AAR message, return Diameter AAA response.
Step S704, terminal is initiated the required IP-CAN carrying of traffic streams to network and is set up request after finishing the negotiation of application layer business information, that is, need make amendment to the IP-CAN session of setting up in the attaching process.In request message, comprise the information such as request QoS relevant with Business Stream.
Step S705, PCEF receive after the request message, in the request message that sends for terminal, the information relevant with forward-flow, by HA with Diameter CCR message offer h-PCRF in form, ask to carry out policy authorization for forward business stream use Internet resources.Report h-PCRF with the form of Diameter CCR message by v-PCRF by PDSN for the information relevant, ask to carry out policy authorization for reverse traffic stream uses Internet resources with reverse flow.
Step S706, PCRF preserve the information that receives from PDSN and HA.
Step S707 if this moment, PCRF did not also have and user-dependent CAMEL-Subscription-Information, then obtains user signing contract information from SPR.
Step S708, according to the service negotiation information of application layer, user request information, user signing contract information, carrier policy etc., be respectively professional forward business stream and reverse traffic flow point of being correlated with by PCRF and do not work out the PCC rule, and (promptly according to the IP-CAN session result related with gateway control session, embodiment one), for corresponding gateway control session produces and the corresponding QoS Rule Information of PCC rule.
Step S709, h-PCRF carry out gateway control and QoS provides program, with the form of Diameter RAR message the QoS Rule Information are handed down to BBERF (PDSN) by v-PCRF and carry out.
Step S710, BBERF (PDSN) carries out the QoS rule for forward-flow, and the QoS rule is installed in the corresponding carrying.
Step S711, BBERF (PDSN) returns response with the form of Diameter RAA message to h-PCRF by v-PCRF.
Step S712, simultaneously according to IP-CAN session association information, the PCC rule that h-PCRF will work out for forward-flow respectively and be the PCC rule of reverse flow formulation, the form by Diameter CCA message is handed down to PCEF (HA), PCEF (PDSN) execution respectively.
Step S713, PCEF (HA and PDSN) receives after the PCC rule that issues, implementation strategy, installation rule is tied to rule in the carrying of the rule with corresponding QoS.
Step S714, PCEF return the response of IP-CAN session modification success to terminal.
By IP-CAN session modification program, can set up IP-CAN carrying for the Business Stream that business packet contains with corresponding QoS assurance.Carry out in the process in business, PCRF can provide corresponding QoS to guarantee for Business Stream uses Internet resources, and corresponding charging control can be provided.
Embodiment three
In service ending, when perhaps terminal needs deviated from network, need to stop corresponding IP-CAN session.On PCRF, need this moment to delete corresponding PCC rule and QoS rule, delete corresponding session association information simultaneously.Fig. 8 stops according to the IP-CAN session of the embodiment of the invention three, the flow chart of cancellation session association, and as shown in Figure 8, this flow process comprises that following step S801 is to step S814:
Step S801, terminal is initiated the IP-CAN session to PCEF (HA and PDSN) and is stopped request.
Step S802, BBERF (PDSN) initiates gateway control session through v-PCRF to h-PCRF by Diameter CCR message and stops request.
Step S803, h-PCRF identification gateway control session stops request, and arrives the IP-CAN session related with gateway control session according to the session association relation recognition.The QoS rule that the h-PCRF deletion is related with gateway control session.
Step S804, h-PCRF returns gateway control session by v-PCRF to BBERF (PDSN) and stops response (Diameter CCA message).
Step S805, BBERF (PDSN) receives response, and the QoS rule that deletion is corresponding stops gateway control session.
Step S806, PCEF (PDSN and HA) sends IP-CAN session through v-PCRF to h-PCRF by Diameter CCR message and stops request.
Step S807, h-PCRF recognize this IP-CAN session and gateway control session correspondence, and recognize and the AF session of this IP-CAN session association.The PCC rule of h-PCRF deletion and this IP-CAN session association.
Step S808, h-PCRF returns the IP-CAN session by v-PCRF to PCEF (PDSN and HA) and stops response (Diameter CCA message).
Step S809, the PCC Rule Information of PCEF (PDSN and HA) deletion and IP-CAN session association stops the IP-CAN session.
Step S810, PCEF (PDSN and HA) returns IP-CAN session deletion response to UE.
Step S811, h-PCRF sends Diameter ASR message to AF, and the indication session stops.
Step S812, AF returns Diameter ASA response to h-PCRF.
Step S813, AF sends Diameter STR message indication AF session to h-PCRF and stops.
Step S814, h-PCRF returns the response (DiameterSTA message) that the AF session stops to AF.
Device embodiment
According to embodiments of the invention, provide a kind of PCRF.Fig. 9 is the structured flowchart according to the PCRF of the embodiment of the invention, and as shown in Figure 9, this PCRF comprises: first sets up module 2, second sets up module 4, the first relating modules 6, the second relating modules 8, first acquisition module, 12, the second acquisition modules 14 are described said structure below.
First acquisition module 12 is used for obtaining an IP-CAN session from PDSN and sets up request; First sets up module 2, be connected to first acquisition module 12, an IP-CAN session that is used for obtaining according to first acquisition module 12 request of setting up is set up an IP-CAN session with PDSN, wherein, the one IP-CAN session is set up and is carried user ID and PDN sign in the request, preferably, also carry the IP address.
Second acquisition module 14 is used for obtaining the 2nd IP-CAN session from HA and sets up request; Second sets up module 4, be connected to second acquisition module 14, the 2nd IP-CAN session that is used for obtaining according to second acquisition module 14 request of setting up is set up the 2nd IP-CAN session with HA, wherein, the 2nd IP-CAN session is set up and is carried user ID and PDN sign in the request, preferably, also carries the IP address, wherein, an IP-CAN session is to set up same PDN to be connected required IP-CAN session with the 2nd IP-CAN session.
First relating module 6 is connected to first and sets up module 2 and second and set up module 4, be used for first set up module 2 and second set up module 4 finish set up the IP-CAN session after, finish the related of an IP-CAN session and IP-CAN session; Second relating module 8, be connected to first acquisition module 12 and second acquisition module 14, an IP-CAN session that is used for obtaining according to first acquisition module 12 is set up request and is finished the related of IP-CAN session and gateway control session with the 2nd IP-CAN session request of setting up that second acquisition module 14 obtains.
Wherein, first relating module is finished the related of an IP-CAN session and IP-CAN session according to any two information in user ID, PDN sign, the IP address; Second relating module is finished the related of IP-CAN session and gateway control session according to any two information in user ID, PDN sign, the IP address.
Need to prove that first relating module can initially be attached to network at subscriber equipment, perhaps when subscriber equipment generation access network switches, finish operation associated; Second relating module can initially be attached to network at subscriber equipment, perhaps finishes operation associated when subscriber equipment generation access network switches.
In sum, pass through the above embodiment of the present invention, a kind of improved session association scheme is provided, PCRF finishes the related of an IP-CAN session and the 2nd IP-CAN session according to an IP-CAN session of obtaining from the PDSN request of setting up with the 2nd IP-CAN session of obtaining from the HA request of setting up, and finish the related of IP-CAN session and gateway control session, realized that PCC is to using not CDMA2000 with the reverse tunnel MIP agreement correct implementation strategy control of commencing business.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a session association method is characterized in that, comprising:
The "Policy and Charging Rules Function entity obtains first procotol from packet data serving node and connects Access Network session foundation request, sets up first procotol and connects the Access Network session;
Described "Policy and Charging Rules Function entity obtains second procotol from home agent and connects Access Network session foundation request, sets up second procotol and connects the Access Network session;
Described "Policy and Charging Rules Function entity is finished the session of described first procotol connection Access Network and is connected the association of Access Network session with described second procotol, and finishes the related of procotol connection Access Network session and gateway control session.
2. method according to claim 1 is characterized in that, the session of described first procotol connection Access Network is connected the Access Network session with described second procotol be to set up same Packet Data Network to connect required procotol connection Access Network session.
3. method according to claim 1 is characterized in that, described first procotol connects the Access Network session request of setting up and is connected the Access Network session with described second procotol and sets up and carry user ID in asking and Packet Data Network identifies.
4. method according to claim 3 is characterized in that, described first procotol connects the Access Network session request of setting up and is connected Access Network session foundation with described second procotol and also carries internet protocol address in asking.
5. method according to claim 4 is characterized in that, described "Policy and Charging Rules Function entity is finished the session of described first procotol connection Access Network and comprised with the association that described second procotol is connected the Access Network session:
Described "Policy and Charging Rules Function entity is finished described first procotol according to any two information in described user ID, described Packet Data Network sign, the described internet protocol address and is connected the Access Network session is connected the Access Network session with described second procotol association.
6. method according to claim 4 is characterized in that, described "Policy and Charging Rules Function entity is finished described procotol connection Access Network session and the related of gateway control session comprises:
Described "Policy and Charging Rules Function entity is finished described procotol according to any two information in described user ID, described Packet Data Network sign, the described internet protocol address and is connected the related of Access Network session and gateway control session.
7. according to each described method in the claim 1 to 6, it is characterized in that, described first procotol connects the Access Network session is connected the Access Network session with described second procotol association, and the subscriber equipment that is associated in of described procotol connection Access Network session and gateway control session initially is attached to network, perhaps generation when subscriber equipment generation access network switches.
8. a "Policy and Charging Rules Function entity is characterized in that, comprising:
First acquisition module is used for obtaining described first procotol from packet data serving node and connects Access Network session foundation request;
First sets up module, is used to set up first procotol and connects the Access Network session;
Second acquisition module is used for obtaining described second procotol from home agent and connects Access Network session foundation request;
Second sets up module, is used to set up second procotol and connects the Access Network session;
First relating module is used to finish described first procotol and connects the Access Network session is connected the Access Network session with described second procotol association;
Second relating module is used to finish procotol and connects the related of Access Network session and gateway control session.
9. "Policy and Charging Rules Function entity according to claim 8 is characterized in that,
Described first relating module also be used for according to described first procotol connect that the Access Network session request of setting up is connected with described second procotol that user ID, the Packet Data Network that the Access Network session request of setting up carries identifies, any two information in the internet protocol address finish the session of described first procotol connection Access Network is connected the Access Network session with described second procotol association.
10. "Policy and Charging Rules Function entity according to claim 8 is characterized in that,
Described second relating module also be used for according to described first procotol connect that the Access Network session request of setting up is connected with described second procotol that described user ID, the described Packet Data Network that the Access Network session request of setting up carries identifies, any two information in the described internet protocol address finish the related of described procotol connection Access Network session and gateway control session.
CN200910160762.7A 2009-07-15 2009-07-15 Session association method and "Policy and Charging Rules Function entity Expired - Fee Related CN101959258B (en)

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CN103269334A (en) * 2013-04-24 2013-08-28 华为技术有限公司 Session association method, session association device and session association 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
CN110048951A (en) * 2018-01-16 2019-07-23 中国移动通信有限公司研究院 A kind of PCF addressing method and device, equipment, storage medium
CN110583095A (en) * 2018-04-09 2019-12-17 联发科技股份有限公司 quality of service rule management in the fifth generation

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CN101369901B (en) * 2007-08-15 2012-02-22 华为技术有限公司 Method, apparatus and system for associating policy and charging execution function entity
CN101384076B (en) * 2007-09-04 2012-02-01 华为技术有限公司 Processing method, switching method for policy and charging control, system and device
CN101150418B (en) * 2007-10-17 2011-01-05 中兴通讯股份有限公司 A selection method for policy billing control server
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CN103269334A (en) * 2013-04-24 2013-08-28 华为技术有限公司 Session association method, session association device and session association system
CN103269334B (en) * 2013-04-24 2017-06-20 华为技术有限公司 Session association method, apparatus and system
US10148702B2 (en) 2013-04-24 2018-12-04 Huawei Technologies Co., Ltd. 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
CN110048951A (en) * 2018-01-16 2019-07-23 中国移动通信有限公司研究院 A kind of PCF addressing method and device, equipment, storage medium
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
CN110583095A (en) * 2018-04-09 2019-12-17 联发科技股份有限公司 quality of service rule management in the fifth generation
CN110583095B (en) * 2018-04-09 2022-07-19 联发科技股份有限公司 Default service quality rule management method and user equipment

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