CN101150418A - A selection method for policy billing control server - Google Patents
A selection method for policy billing control server Download PDFInfo
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- CN101150418A CN101150418A CNA2007101819871A CN200710181987A CN101150418A CN 101150418 A CN101150418 A CN 101150418A CN A2007101819871 A CNA2007101819871 A CN A2007101819871A CN 200710181987 A CN200710181987 A CN 200710181987A CN 101150418 A CN101150418 A CN 101150418A
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Abstract
This invention relates to a method for selecting strategy charge control servers, in which, PCRF entity is placed at the grouping system of 3GPP limit and a PCEF module includes a first PCEF module and a second PCEF module stationed at different nodes and the method includes: when setting up a first IP session from UE to a certain PDN, an entity where the second PCEF module locates selects the PCRF entity and registers the IP session in it and sends IP address of the PCRF to P-GW in the process of setting up tunnel with the P-GW, which registers the IP session to the PCRF to correlate the IP session registered by the P-GW and the entity of the PCEF module to control the charge. This invented method guarantees that multiple PCEF find out a same PCRF when the function of the PCEF is dispersed to more than one node.
Description
Technical field
The present invention relates to 3GPP (3rd Generation Partnership Project, third generation partner program) grouping system of evolution (EPS:Evolved Packet System), the particularly system of selection of the policy billing control server in this system.
Background technology
3GPP (3rd Generation Partnership Project, third generation partner program) the grouping system EPS of evolution (Evolved Packet System) is by E-UTRAN (Evolved UniversalTerrestrial Radio Access Network, the universal mobile telecommunications system land radio access web of evolution), MME (Mobility Management Entity, mobile management unit), S-GW (ServingGateway, gateway), P-GW, claim PDN GW (Packet Data Network Gateway again, grouped data network gateway), HSS (Home Subscriber Server, home subscriber server), AAA (the Authentication of 3GPP, Authorization and Accounting, authenticated/authorized/charging) server, PCRF (Policy and Charging Rules Function, "Policy and Charging Rules Function) entity and other support nodes are formed, and also the PCRF entity are called policy billing control server in the literary composition.
Wherein MME is responsible for chain of command related works such as the processing of mobile management, Non-Access Stratum signaling and the contextual management of user's mobile management; S-GW is the accessing gateway equipment that links to each other with E-UTRAN, transmits data between E-UTRAN and P-GW, and is responsible for pending datas such as paging are carried out buffer memory.P-GW then is the borde gateway of EPS and PDN (Packet Data Network, packet data network) network, and the access of being responsible for PDN reaches functions such as transmitting data between EPS and PDN.PCRF is the "Policy and Charging Rules Function entity, it is by receiving interface Rx interface and the IP (InternetProtocol of operator, procotol) business network links to each other, obtain business information, it links to each other with gateway device in the network by the S7/S7a/S7b/S7c interface on the other hand, is responsible for initiating the foundation of IP carrying, QoS (the Quality of Service of assurance business datum, and the control of chargeing service quality).The 3GPPAAA server is responsible for access authentication when the user is arranged in non-3GPP IP access network (by the Wa of Fig. 1
*, Ta
*, Wm
*Interface), simultaneously, when the interface between P-GW and S-GW was based on proxy-mobile IP (Proxy Mobile IP) agreement, the 3GPP aaa server linked to each other with P-GW (by the S6c interface among Fig. 1), and functions such as tunnel safety control and user access authorization are provided.HSS provides information such as user contracting data for the 3GPP aaa server, passes through Wx between 3GPP aaa server and the HSS
*Interface is interconnected.
Described non-3GPP network is all common names that are different from other access networks of 3GPP access network, such as, WiMax, CDMA2000, WLAN (Wireless Local Area Network, WLAN (wireless local area network)) etc. all are called as the non-3 GPP access network network in the native system framework.EPS supports the intercommunication with the non-3 GPP access network network.Realize that by the S2a/b interface P-GW is as 3GPP and the internetwork anchor point of non-3GPP with the intercommunication of non-3GPP network.The system architecture diagram of EPS as shown in Figure 1.Wherein non-3 GPP system is divided into the non-3GPP IP access of trusted and trustless non-3GPP IP access.The non-3GPP IP of trusted inserts can be directly by S2a and P-GW interface; Trustless non-3GPP IP inserts to be needed to link to each other with P-GW through ePDG (Evolved Packet Data Gateway, the packet data gateway of evolution), and the interface between ePDG and P-GW is S2b.
In traditional 3GPP network, strategy and charge execution function (PCEF:Policy and ChargingEnforcement Function, below be also referred to as the PCEF module) exist only among the P-GW, PCRF passes through S7 interface (see figure 1) exchange message as long as be connected the control that can finish all functions with P-GW between PCRF and P-GW.But, after the 3GPP network provides IWF with non-3GPP, when the interface between P-GW and S-GW during based on PMIP, the funtion part of PCEF has been moved among the S-GW, such as, the binding functions of carrying etc. pass through S7c interface (see figure 1) exchange message between S-GW and the PCRF.When intercommunication inserts between non-3 GPP system is by S2a/S2b and 3GPP system, the also function of resident part PCEF in the non-3 GPP system.When non-3 GPP system is connecting system trusty, pass through S7a interface (see figure 1) exchange message between PCRF and non-3 GPP system; When non-3 GPP system is fly-by-night connecting system, pass through S7b interface (see figure 1) exchange message between PCRF and non-3 GPP system.
When first session that is established to a certain PDN, PCEF need inquire about the IP address of PCRF, and goes registration to PCRF.When PCEF only resides in P-GW, P-GW is according to APN (Access PointName, APN) seek with the corresponding PCRF:P-GW of relevant PDN by dispose IP address or the additive method of PCRF in this locality, as obtain the IP address of PCRF to DNS (Domain Name Server, name server) inquiry.But there are the following problems in meeting when the function of PCEF is distributed to more than a node: how to guarantee that a plurality of PCEF find same PCRF.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of system of selection of policy billing control server is provided, and makes when the function of PCEF is distributed to more than a node and guarantees that a plurality of PCEF find same PCRF, also promptly finds same policy billing control server.
For addressing the above problem, the present invention proposes a kind of system of selection of policy billing control server, described policy billing control server be the PCRF entity be arranged in 3GPP evolution grouping system and the strategy comprise a PCEF module and the 2nd PCEF module that resides in different nodes with charge execution function PCEF module, the method comprising the steps of:
When setting up user equipment (UE) to first IP session of a certain packet data network, the also described IP session of registration in this PCRF entity of the 2nd PCEF module place entity selection one PCRF entity;
At the 2nd PCEF module place entity with comprise in the tunnel establishment procedure between the grouped data network gateway P-GW of a PCEF module, described the 2nd PCEF module place entity sends to described P-GW with the IP address of described PCRF;
Described P-GW registers described IP session to described PCRF, and described PCRF is associated the control of chargeing with the described IP session of described P-GW and described the 2nd PCEF module place registers entities.
Further, said method also can have following characteristics, and described UE is in the 3GPP coverage, and described the 2nd PCEF module place entity is gateway S-GW.
Further, said method also can have following characteristics, and described UE is in the trusted non-3 GPP system coverage, and described the 2nd PCEF module place entity is the entity that has strategy and charge execution function in the described trusted non-3 GPP system.
Further, said method also can have following characteristics, is in trustless non-3 GPP system coverage, and described the 2nd PCEF module place entity is among the packet data gateway ePDG of evolution.
Further, said method also can have following characteristics, and described UE specifically is divided into following steps to the attaching process of the grouping system of described 3GPP evolution:
Described UE sends and adheres to request to mobile management unit MME, described MME initiates identifying procedure, behind the authentication success, described MME sends carrying to the S-GW that selects and sets up request, has the address information of Qos strategy, APN and the P-GW of required foundation carrying;
Described S-GW selects the PCRF entity and the foundation of the described session of registration in this PCRF entity, carries the sign qos policy relevant with this carrying of described UE, and described PCRF entity sends to P-GW with the Qos strategy of affirmation;
After succeeding in registration to PCRF, described S-GW sends the agent binding update request to described P-GW, carries the sign of UE and the address information of described PCRF, and described P-GW and authentication and authorization charging and/or home subscriber server are mutual, and the foundation of this carrying is authorized;
Described P-GW registers described IP session to described PCRF, the sign of carrying described UE, and the session with described S-GW registration and described P-GW registration is associated described PCRF according to described UE sign, and the PCC strategy that described session is relevant sends to P-GW;
Described P-GW sends the agent binding response to described S-GW, and described S-GW sends carrying for described MME and sets up response, and described MME initiates to set up radio bearer, notifies described UE to adhere to successfully.
Further, said method also can have following characteristics, and described UE specifically is divided into following steps to the attaching process of the grouping system of described 3GPP evolution:
Carry out the non-3GPP IP of trusted access process between described UE and trusted non-3 GPP system, described trusted non-3 GPP system is the address information of the P-GW of described UE distribution from authentication and authorization charging and/or home subscriber server acquisition in verification process;
The signaling that sends described UE triggers described trusted non-3 GPP system and initiates to be established to tunnel between described P-GW, described trusted non-3 GPP system is selected the PCRF entity and the foundation of the described IP session of registration in this PCRF entity, carry the sign of described UE, described PCRF entity sends to described trusted non-3 GPP system with the Qos strategy of confirming;
After succeeding in registration to PCRF, described trusted non-3 GPP system sends the agent binding update request to described P-GW, carry the sign of UE and the address information of described PCRF, described P-GW and authentication and authorization charging and/or home subscriber server are mutual, and the foundation of this carrying is authorized;
Described P-GW registers described IP session to described PCRF, the sign of carrying described UE, and the session with described trusted non-3 GPP system and described P-GW registration is associated described PCRF according to described UE sign, and the PCC strategy that described session is relevant sends to P-GW;
Described P-GW sends the agent binding response to described trusted non-3 GPP system, and described trusted non-3 GPP system and described UE finish the flow process of setting up of described IP session.
Further, said method also can have following characteristics, and described UE specifically is divided into following steps to the attaching process of the grouping system of described 3GPP evolution:
Hold consultation between described UE and described ePDG, described ePDG initiates the identifying procedure to described UE, and the address information of the P-GW that authentication and authorization charging and/or home subscriber server will distribute for described UE sends to described ePDG;
Described ePDG selects the PCRF entity and the foundation of the described session of registration in this PCRF entity, carries the sign qos policy relevant with this carrying of described UE, and described PCRF entity sends to described ePDG with the Qos strategy of affirmation;
After succeeding in registration to PCRF, described ePDG sends the agent binding update request to described P-GW, carries the sign of UE and the address information of described PCRF, and described P-GW and authentication and authorization charging and/or home subscriber server are mutual, and the foundation of this carrying is authorized;
Described P-GW registers described IP session to described PCRF, the sign of carrying described UE, and the session with described ePDG and described P-GW registration is associated described PCRF according to described UE sign, and the PCC strategy that described session is relevant sends to P-GW;
Described P-GW sends the agent binding response to described ePDG, finishes the flow process of setting up in Internet Protocol Security IPSEC tunnel between described ePDG and described UE.
Further, said method also can have following characteristics, and in verification process, described MME is that described IP session distributes a PCRF entity also the address information of this PCRF entity to be sent to described S-GW, and described S-GW selects the PCRF entity according to this address information; Perhaps, described S-GW selects the PCRF entity according to APN.
Further, said method also can have following characteristics, in verification process, authentication and authorization charging and/or home subscriber server are that described IP session distributes a PCRF entity also the address information of this PCRF entity to be sent to described trusted non-3 GPP system or ePDG, and described trusted non-3 GPP system or ePDG select described PCRF entity according to this address information;
Further, said method also can have following characteristics, the network access Identifier NAI that is designated UE of described UE or international mobile subscriber identity IMSI.
Further, said method also can have following characteristics, when described P-GW sends the agent binding response to described the 2nd PCEF module place entity, also will send to described the 2nd PCEF module place entity for described UE IP address allocated.
Further, said method also can have following characteristics, and described trusted non-3 GPP system is the WiMax system, and described the 2nd PCEF module place entity is the IAD in the WiMax system; Perhaps
Described trusted non-3 GPP system is the CDMA2000 system, and described the 2nd PCEF module place entity is the group data service node in the CDMA2000 system.
Use the method for the invention, guarantee that a plurality of PCEF find same PCRF in the time of can being distributed to more than a node in the function of PCEF.
Description of drawings
Fig. 1 is the system architecture diagram of EPS.
Fig. 2 is the flow chart of the embodiment of the invention one.
Fig. 3 is the flow chart of the embodiment of the invention two.
Fig. 4 is the flow chart of the embodiment of the invention three.
Embodiment
Thought of the present invention is: when PCEF resides in more than a node, user terminal UE is when first IP session that is established to a certain PDN, the non-3GPP gateway of S-GW/ePDG or trusted (PCEF functional module wherein is called the 2nd PCEF module) is at first registered in PCRF, obtain the IP address of PCRF, set up agreement such as proxy mobile IP protocol (PMIP agreement) by S-GW/ePDG or the non-3GPP gateway of trusted by the tunnel then the IP address of the PCRF that it obtained is sent to P-GW (PCEF functional module wherein is called a PCEF module).In follow-up process, P-GW does not select PCRF voluntarily, needs to register in same PCRF.The non-3GPP gateway of S-GW/ePDG or trusted can be inquired about the IP address of PCRF by APN, also can be selected the IP address of PCRF is sent to S-GW/ePDG or the non-3GPP gateway of trusted by AAA/HSS in verification process.
Below in conjunction with drawings and Examples technical scheme of the present invention is described in detail.
Embodiment one
What present embodiment was described is to be in the 3GPP coverage as UE, and the 3GPP core net adopts is the EPS framework, the interface protocol among the EPS between S-GW and P-GW during based on PMIP UE to the attaching process of this system.To be established to first IP session of a certain PDN in this process, S-GW selects PCRF, and by the interface between S-GW and P-GW the IP address of PCRF is sent to P-GW.The flow chart of present embodiment as shown in Figure 2, each step is described below:
202, UE sends Attach Request message to MME;
204, MME initiates the identifying procedure to UE, exchanges authentication-related information between MME and the HSS as required; Behind the authentication success, MME initiates more new technological process of position, and HSS sends to MME with the subscription data of UE; In verification process, HSS sends to MME with the selection information of P-GW; MME selects S-GW and P-GW; Alternatively, MME also can select PCRF;
206, " request information is set up in carrying to MME, has the IP address of qos policy, APN and the P-GW of required foundation carrying in this message to the S-GW transmission.Also be carried in the IP address of selected PCRF of 204 steps in this message; If the IP address of not carrying PCRF in this message, then S-GW selects PCRF according to APN;
208, sign such as NAI or the IMSI (International Mobile Subscriber Identity, international mobile subscriber identity) of UE are carried in the foundation of S-GW this session of registration in the PCRF in the message, and should the relevant qos policy of carrying.PCRF checks the qos policy of this carrying, and according to the CAMEL-Subscription-Information of UE, PCRF can revise the qos policy of this carrying, and PCRF sends to S-GW with amended qos policy;
210, after PCRF succeeded in registration, S-GW sent the agent binding update request to P-GW; Carry the sign of UE, the information such as IP address of PCRF in this message;
212, P-GW and AAA/HSS are mutual, and the foundation of this carrying is authorized;
214, P-GW registers this IP session in PCRF, the sign of carrying this UE in the message, and PCRF registers the IP session according to the UE sign with P-GW and is associated with the session that S-GW is registered; PCC (policy and charging control) strategy that PCRF is relevant with this session sends to P-GW;
216, P-GW sends the agent binding response to S-GW, if P-GW gives UE distributing IP address, then P-GW sends to S-GW with institute distributing IP address;
218, S-GW sends carrying to MME and sets up response;
220, MME initiates to set up radio bearer, and notice UE adheres to successfully;
222, MME initiates bearer update, and radio bearer information is sent to S-GW.
Embodiment two
What present embodiment was described is to be in the non-3GPP coverage of trusted as UE, and the 3GPP core net adopts is the EPS framework, the S2a interface (as shown in Figure 1) between non-3GPP network of trusted and P-GW during based on the PMIP agreement UE to the attaching process of this system.In this process, will be established to first IP session of a certain PDN; By the non-3GPP network selecting of trusted PCRF, and the IP address of PCRF is sent to P-GW by the S2a interface.
The flow chart of present embodiment as shown in Figure 3, the pairing equipment of the non-3GPP network of the trusted among the figure is different and institute is different according to the type of non-3GPP network, such as, in WiMax, this network element corresponds to IAD A-GW (Access Gateway); In CDMA2000, this network element corresponds to PDSN (Packet Data Serving Node, group data service node).This flow process may further comprise the steps:
302, carry out non-3GPP IP between UE and non-3 GPP system and insert special access process, such as cell selecting, network selecting etc., non-3 GPP system carries out access authentication to UE, and this identifying procedure needs the participation of HSS/AAA; In verification process, HSS/AAA (referring to AAA and/or HSS) distributes P-GW for this UE, and the IP address of P-GW is sent to non-3GPP network; HSS/AAA can also distribute PCRF for UE, and the IP address of PCRF is sent to non-3GPP network;
304, execution level 3 signalings between UE and non-3GPP network, such as, these layer 3 signalings may be DHCP (Dynamic Host Configuration Protocol in WiMax, DHCP) request message or MIP (Mobile IP, mobile IP protocol) route request information, in the CDMA2000 system, it is PPP (Point to Point Protocol, point-to-point protocol) message that this layer 3 triggers signaling.The signalings that trigger this layer 3 will trigger the non-3 GPP system initiation and be established to PMIP tunnel between P-GW;
306, non-3GPP network is to the foundation of PCRF registration IP session, the sign of carrying described UE; If in 302 steps, AAA/HSS does not select PCRF for this IP session, the network based APN of non-3GPP is that PCRF is selected in this IP session; PCRF checks this session QoS policy information according to the CAMEL-Subscription-Information of UE, and the qos policy information after will being confirmed by PCRF sends to non-3GPP network.
308, after PCRF succeeded in registration, non-3GPP network sent the agent binding update request to P-GW, carries the sign of UE such as the information such as IP address of NAI or IMSI, PCRF in this request;
310, P-GW and AAA/HSS are mutual, and the foundation of this carrying is authorized;
312, P-GW registers this IP session in PCRF, the sign of carrying this UE in the message, and PCRF registers the IP session according to the sign of UE with P-GW and is associated with the session that non-3GPP network is registered, and the PCC strategy that PCRF is relevant with this session sends to P-GW;
314, P-GW sends the agent binding response to non-3GPP network; If P-GW gives UE distributing IP address, then P-GW sends to non-3GPP network with institute distributing IP address;
316, finish the flow process of setting up of this IP session between non-3GPP network and UE, this process is different and different according to non-3GPP network, and such as in WiMax, this process may be for sending dhcp response message or advertising of route message to UE; And in CDMA2000, this process may be PPP NCP process.
Embodiment three
What present embodiment was described is to be in trustless non-3GPP network coverage as UE, and what the 3GPP core net adopted is the EPS framework, gateway between ePDG right and wrong 3GPP network and EPS, the S2b interface between ePDG and P-GW during based on the PMIP agreement UE to the attaching process of this system.In this process, will be established to first IP session of a certain PDN, select PCRF, and the IP address of PCRF be sent to P-GW by the S2b interface by ePDG.
The flow chart of present embodiment as shown in Figure 4, each step is described below:
402, carrying out IKE (Internet Key Exchange, cipher key change) between UE and ePDG consults; EPDG authenticates UE, the security information of ePDG and HSS/AAA exchange UE and CAMEL-Subscription-Information, authorization message etc.; HSS/AAA is that UE distributes P-GW, and the IP address of P-GW is sent to ePDG, and alternatively, HSS/AAA is that this IP session distributes PCRF, and gives ePDG with the IP address strap of PCR;
404, ePDG is to the foundation of PCR registration IP session, the sign of carrying described UE; If in 402 steps, AAA/HSS is not that PCRF is selected in this IP session, and ePDG is that PCRF is selected in this IP session according to APN; PCRF checks this session QoS policy information according to the CAMEL-Subscription-Information of UE, and the qos policy information after will being confirmed by PCRF sends to ePDG;
406, after PCRF succeeded in registration, ePDG sent the agent binding update request to P-GW, carries the sign of UE, the information such as IP address of PCRF in this request;
408, P-GW and AAA/HSS are mutual, and the foundation of this carrying is authorized;
410, P-GW this IP session of registration in the PCRF, P-GW carries the sign of this UE, and PCRF registers the session association that IP session and ePDG are registered according to the sign of UE with P-GW, and the PCC strategy that PCRF is correlated with this session sends to P-GW;
412, P-GW sends the agent binding response to ePDG, if P-GW gives UE distributing IP address, then P-GW will send to ePDG for the UE IP address allocated;
414, finish the flow process of setting up in IPSEC (Internet Protocol Security, Internet Protocol Security) tunnel between ePDG and UE, ePDG is a UE configuration of IP address etc.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (12)
1. the system of selection of a policy billing control server, described policy billing control server be the PCRF entity be arranged in 3GPP evolution grouping system and the strategy comprise a PCEF module and the 2nd PCEF module that resides in different nodes with charge execution function PCEF module, the method comprising the steps of:
When setting up user equipment (UE) to first IP session of a certain packet data network, the also described IP session of registration in this PCRF entity of the 2nd PCEF module place entity selection one PCRF entity;
At the 2nd PCEF module place entity with comprise in the tunnel establishment procedure between the grouped data network gateway P-GW of a PCEF module, described the 2nd PCEF module place entity sends to described P-GW with the IP address of described PCRF;
Described P-GW registers described IP session to described PCRF, and described PCRF is associated the control of chargeing with the described IP session of described P-GW and described the 2nd PCEF module place registers entities.
2. system of selection as claimed in claim 1 is characterized in that:
Described UE is in the 3GPP coverage, and described the 2nd PCEF module place entity is gateway S-GW.
3. system of selection as claimed in claim 1 is characterized in that:
Described UE is in the trusted non-3 GPP system coverage, and described the 2nd PCEF module place entity is the entity that has strategy and charge execution function in the described trusted non-3 GPP system.
4. system of selection as claimed in claim 1 is characterized in that:
Described UE is in trustless non-3 GPP system coverage, and described the 2nd PCEF module place entity is among the packet data gateway ePDG of evolution.
5. system of selection as claimed in claim 2 is characterized in that: described UE specifically is divided into following steps to the attaching process of the grouping system of described 3GPP evolution:
Described UE sends and adheres to request to mobile management unit MME, described MME initiates identifying procedure, behind the authentication success, described MME sends carrying to the S-GW that selects and sets up request, has the address information of Qos strategy, APN and the P-GW of required foundation carrying;
Described S-GW selects the PCRF entity and the foundation of the described session of registration in this PCRF entity, carries the sign qos policy relevant with this carrying of described UE, and described PCRF entity sends to P-GW with the Qos strategy of affirmation;
After succeeding in registration to PCRF, described S-GW sends the agent binding update request to described P-GW, carries the sign of UE and the address information of described PCRF, and described P-GW and authentication and authorization charging and/or home subscriber server are mutual, and the foundation of this carrying is authorized;
Described P-GW registers described IP session to described PCRF, the sign of carrying described UE, and the session with described S-GW registration and described P-GW registration is associated described PCRF according to described UE sign, and the PCC strategy that described session is relevant sends to P-GW;
Described P-GW sends the agent binding response to described S-GW, and described S-GW sends carrying for described MME and sets up response, and described MME initiates to set up radio bearer, notifies described UE to adhere to successfully.
6. system of selection as claimed in claim 3 is characterized in that: described UE specifically is divided into following steps to the attaching process of the grouping system of described 3GPP evolution:
Carry out the non-3GPP IP of trusted access process between described UE and trusted non-3 GPP system, described trusted non-3 GPP system is the address information of the P-GW of described UE distribution from authentication and authorization charging and/or home subscriber server acquisition in verification process;
The signaling that sends described UE triggers described trusted non-3 GPP system and initiates to be established to tunnel between described P-GW, described trusted non-3 GPP system is selected the PCRF entity and the foundation of the described IP session of registration in this PCRF entity, carry the sign of described UE, described PCRF entity sends to described trusted non-3 GPP system with the Qos strategy of confirming;
After succeeding in registration to PCRF, described trusted non-3 GPP system sends the agent binding update request to described P-GW, carry the sign of UE and the address information of described PCRF, described P-GW and authentication and authorization charging and/or home subscriber server are mutual, and the foundation of this carrying is authorized;
Described P-GW registers described IP session to described PCRF, the sign of carrying described UE, and the session with described trusted non-3 GPP system and described P-GW registration is associated described PCRF according to described UE sign, and the PCC strategy that described session is relevant sends to P-GW;
Described P-GW sends the agent binding response to described trusted non-3 GPP system, and described trusted non-3 GPP system and described UE finish the flow process of setting up of described IP session.
7. system of selection as claimed in claim 4 is characterized in that: described UE specifically is divided into following steps to the attaching process of the grouping system of described 3GPP evolution:
Hold consultation between described UE and described ePDG, described ePDG initiates the identifying procedure to described UE, and the address information of the P-GW that authentication and authorization charging and/or home subscriber server will distribute for described UE sends to described ePDG;
Described ePDG selects the PCRF entity and the foundation of the described session of registration in this PCRF entity, carries the sign qos policy relevant with this carrying of described UE, and described PCRF entity sends to described ePDG with the Qos strategy of affirmation;
After succeeding in registration to PCRF, described ePDG sends the agent binding update request to described P-GW, carries the sign of UE and the address information of described PCRF, and described P-GW and authentication and authorization charging and/or home subscriber server are mutual, and the foundation of this carrying is authorized;
Described P-GW registers described IP session to described PCRF, the sign of carrying described UE, and the session with described ePDG and described P-GW registration is associated described PCRF according to described UE sign, and the PCC strategy that described session is relevant sends to P-GW;
Described P-GW sends the agent binding response to described ePDG, finishes the flow process of setting up in Internet Protocol Security IPSEC tunnel between described ePDG and described UE.
8. system of selection as claimed in claim 5 is characterized in that:
In verification process, described MME is that described IP session distributes a PCRF entity also the address information of this PCRF entity to be sent to described S-GW, and described S-GW selects the PCRF entity according to this address information; Perhaps, described S-GW selects the PCRF entity according to APN.
9. as claim 6 or 7 described systems of selection, it is characterized in that:
In verification process, authentication and authorization charging and/or home subscriber server are that described IP session distributes a PCRF entity also the address information of this PCRF entity to be sent to described trusted non-3 GPP system or ePDG, and described trusted non-3 GPP system or ePDG select described PCRF entity according to this address information;
10. as claim 5,6 or 7 described systems of selection, it is characterized in that: the network access Identifier NAI that is designated UE of described UE or international mobile subscriber identity IMSI.
11., it is characterized in that as claim 5,6 or 7 described systems of selection:
When described P-GW sends the agent binding response to described the 2nd PCEF module place entity, also will send to described the 2nd PCEF module place entity for described UE IP address allocated.
12. system of selection as claimed in claim 3 is characterized in that:
Described trusted non-3 GPP system is the WiMax system, and described the 2nd PCEF module place entity is the IAD in the WiMax system; Perhaps
Described trusted non-3 GPP system is the CDMA2000 system, and described the 2nd PCEF module place entity is the group data service node in the CDMA2000 system.
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