CN101272534B

CN101272534B - Policy charging control method for concealing visited place network topological structure

Info

Publication number: CN101272534B
Application number: CN2008100818471A
Authority: CN
Inventors: 周晓云; 宗在峰
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2008-05-08
Filing date: 2008-05-08
Publication date: 2012-07-18
Anticipated expiration: 2028-05-08
Also published as: WO2009135362A1; CN101272534A

Abstract

A method for controlling the strategic charging of a topology structure which hides visit place network is applied to a 3GPP evolutionary grouping system. The method includes: in the IP accessing network of user equipment, namely an IP-CAN conversation modification process and after visit network strategy and charging rules function vPCRF receives a gateway control conversation message which is sent by bearing binding and event reporting function BBERF, the interaction between the IP-CAN conversation message and the vPCRF is adopted to obtain the strategy which is rearranged by home network strategy and charging rules function hPCRF and charging control PCC rules and control and send conversation messages to the BBERF through a gateway. The method of the invention enables the topology structure of the visit place network to hide the network. At the same time, a S9 interface only supports the protocol which is supported by a Gx interface. Then, the S9 interface is simplified.

Description

A kind of method of policy and charging control of concealing visited place network topological structure

Technical field

The present invention relates to the method for the policy and charging control of a kind of concealing visited place network topological structure in the wireless network.

Background technology

Grouping system (the EPS of 3GPP evolution; Evolved Packet System) by the UTRAN (E-UTRAN of evolution; Evolved Universal Terrestrial Radio Access Network), MME (mobile management unit, Mobility Management Entity), S-GW (gateway, ServingGateway), PDN GW (P-GW; Packet Data Network GateWay; Data network gateway), HSS (home subscriber server, Home Subscriber Server), 3GPP aaa server (3GPP authentication and authorization charging server), PCRF (Policy and Charging Rules Function; "Policy and Charging Rules Function), reaching other support nodes forms.Wherein MME is responsible for the processing of mobile management, Non-Access Stratum signaling, user's chain of command related works such as the contextual management of mobile management; S-GW is the accessing gateway equipment that links to each other with E-UTRAN, between E-UTRAN and PDN GW, transmits data, and is responsible for pending datas such as paging are carried out buffer memory.P-GW then is the grouping system (EPS, Evolved Packet System) of 3GPP evolution and the borde gateway of PDN (Packet Data Network) network, is responsible for the access of PDN, between EPS and PDN, transmits function such as data.PCRF is the "Policy and Charging Rules Function entity, and it obtains business information through Rx interface and operator's IP operation network interface; It links to each other another side with gateway device in the network through Gx/Gxa/Gxc; Be responsible for initiating the foundation that IP carries, guarantee the QoS of business datum, and the control of chargeing.

EPS supports the intercommunication with non-3GPP network.Realize that through the S2a/b/c 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 is 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 and can directly pass through 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 data gateway of evolution), and the interface between ePDG and P-GW is S2b.

In the 3GPP network before the EPS; Strategy and charge execution function (PCEF; Policy andcharging enforcement function) exist only among the P-GW, PCRF passes through Gx interface (see figure 1) exchange message as long as can accomplish policy and charging control with the P-GW interface between PCRF and P-GW.But, in the EPS system, when the interface between P-GW and S-GW during based on PMIPv6; Because the limitation of PMIPv6 agreement, can not the transmission policy charging control information, the partial function of PCEF; For example function such as bearing binding and event report has been moved among the S-GW, is called bearing binding and event reporting function (BBERF; Bearer Binding and Event Reporting Function), pass through Gxc interface (see figure 1) exchange message between S-GW and the PCRF.When intercommunication inserts between the non-3GPP connecting system of trusted is through S2a and 3GPP system, the also resident BBERF in the trusted non-3 GPP access network Central Shanxi Plain (like Fig. 1), it is through Gxa interface and PCRF exchange message.When UE roamed, the S9 interface was as the interface of home network PCRF and access zone network PCRF.For providing professional AF (Application Function, application function), UE sends the business information that is used to formulate PCC (Policy and Charging Control, the strategy and the control of chargeing) strategy to PCRF simultaneously through Rx interface.Gx, Gxa, Gxc and Rx interface all adopt Diameter.

Above PCEF, BEERF, vPCRF, hPCRF etc. can be considered functional module or entity.

When the user roams into visit ground, can use local route (Home Routed) or local break-out (LBO, Local BreakOut) dual mode to insert the PDN network.Adopt the mode of Home Routed, the user uses the P-GW of home network to insert PDN network (as shown in Figure 2); Adopt the LBO mode, the user uses the P-GW on visit ground to insert PDN network (as shown in Figure 3).When UE adopted Home Routed mode to roam, the BBERF that is positioned at access zone network carried out through vPCRF (visit PCRF) and hPCRF (home PCRF) alternately.When UE adopted the LBO mode to roam, the operator of access zone network hoped to hide the network topology structure of oneself, and promptly the BBERF of access zone network is sightless for hPCRF.VPCRF the mutual of BBERF and hPCRF that can terminate, and only transmit access zone network PCEF and hPCRF alternately.Under the roaming scence of LBO; UE inserts through E-UTRAN; S-GW and P-GW adopt PMIPv6 agreement or UE to close through the trusted non-3 GPP access network, and when adopting the PMIPv6 agreement to insert, concealing visited place network topological structure was an an open question still when specifically how implementation strategy chargeed control.

Summary of the invention

The technical problem that the present invention will solve provides a kind of method of policy and charging control of concealing visited place network topological structure; Make access zone network can hide topology of networks; The S9 interface has been simplified the S9 interface as long as support the agreement that the Gx interface is supported simultaneously.

In order to address the above problem, the invention provides a kind of method of policy and charging control of concealing visited place network topological structure, be applied to the grouping system of 3GPP evolution, comprising:

In the IP of said subscriber equipment connection access network is in the IP-CAN session modification flow process; After said access zone network "Policy and Charging Rules Function vPCRF receives the gateway control session message of bearing binding and event reporting function BBERF transmission; Adopt IP-CAN conversation message and said vPCRF mutual, obtain strategy that home network "Policy and Charging Rules Function hPCRF reformulates and charging control PCC rule and be handed down to said BBERF through gateway control session message.

Further, said method also can comprise following characteristics:

In the IP-CAN of said subscriber equipment session foundation or session modification flow process, said vPCRF preserves the event trigger that said hPCRF issues; Said vPCRF judges whether that the incident that said event trigger is described takes place after receiving the gateway control session message that said BBERF sends, if any, adopt IP-CAN conversation message and said hPCRF mutual.

Further, said method also can comprise following characteristics:

In the IP-CAN of said subscriber equipment session modification flow process, said vPCRF receives the IP-CAN conversation message that strategy and charge execution function PCEF send;

Said vPCRF judges whether that the incident that said event trigger is described takes place, if any, adopt IP-CAN conversation message and said hPCRF mutual, it is regular and be handed down to said PCEF through IP-CAN message to obtain PCC that said hPCRF reformulates.

Further, said method also can comprise following characteristics:

Said BBERF resides on the gateway S-GW, and said subscriber equipment inserts the grouping system of said 3GPP evolution with the roam mode of local break-out through the UTRAN of evolution, and adopts the PMIPv6 agreement between said S-GW and the data network gateway P-GW; Perhaps

Said BBERF resides in the trusted non-3 GPP access network and shuts, and said subscriber equipment adopts the PMIPv6 agreement to insert the grouping system of said 3GPP evolution with the roam mode of local break-out.

Further, said method also can comprise following characteristics:

Set up in the process in said IP-CAN session, resident have the S-GW of said BBERF or trusted non-3 GPP access network to close the event trigger that the said vPCRF of installation issues;

Said IP-CAN session modification flow process is initiated owing to BBERF switches, and this flow process comprises:

Resident purpose S-GW that this BBERF arranged or trusted non-3 GPP access network close receive set up the gateway control session request message after, send gateway control session to said vPCRF and set up Indication message;

After said vPCRF receives that gateway control session is set up Indication message; Said gateway control session is associated with the IP-CAN session of setting up before; Directly send the indication of IP-CAN session modification or when the incident that judgement has said event trigger to describe takes place, send the indication of IP-CAN session modification, carry the event report and the affected PCC rule that change to said hPCRF to said hPCRF;

Said hPCRF reformulates the PCC rule according to the information of carrying in the IP-CAN session modification Indication message, sends to said vPCRF through IP-CAN session modification acknowledge message;

Said vPCRF reformulates the QoS rule according to the PCC rule, and sets up acknowledge message through gateway control session and send to said purpose S-GW or trusted non-3 GPP access network and close;

Said purpose S-GW or trusted non-3 GPP access network close installs new QoS rule.

Further, said method also can comprise following characteristics: said IP-CAN session modification flow process also comprises:

Said purpose S-GW or trusted non-3 GPP access network close receive set up the gateway control session request message after, also send and set up the IP-CAN conversation request message to the said P-GW of the resident PCEF of having, carry the sign of the PDN that ID and user will insert;

Said P-GW sends the indication of IP-CAN session modification to said vPCRF;

The incident of describing in the event trigger that said vPCRF such as judgement have hPCRF to issue takes place, and sends IP-CAN session modification Indication message to said hPCRF, carries the event report and the affected PCC rule that change;

Said hPCRF reformulates the PCC rule according to the information of said event report, sends to vPCRF through IP-CAN session modification acknowledge message;

Said vPCRF is regular through the PCC that strategy and charging regulation give information after said P-GW sends said PCC rule or makes amendment according to the PCC rule that local policy issues hPCRF;

Said P-GW installs the PCC rule that issues, and sets up the IP-CAN session response message to purpose S-GW or the transmission of trusted non-3 GPP access network pass, and to said vPCRF transmission strategy and charging regulation affirmation is provided;

Said purpose S-GW or trusted non-3 GPP access network close to be received after the IP-CAN session response message to return to the transmit leg of setting up the gateway control session request message and sets up the gateway control session response message.

Further, said method also can comprise following characteristics:

After said vPCRF receives the PCC rule that said hPCRF issues through IP-CAN session modification acknowledge message; Judge whether that also to set up the PCC rule that acknowledge message issues through gateway control session identical with said hPCRF; If change; The PCC rule that then issues according to IP-CAN session modification acknowledge message is reformulated the QoS rule, gives information through gateway control and QoS rule and closes to said S-GW or trusted non-3 GPP access network the QoS rule downloading after upgrading;

Said S-GW or trusted non-3 GPP access network close receives that the QoS that gives information gateway control and QoS rule the back installs wherein is regular, returns gateway control and the QoS rule provides acknowledge message to said vPCRF.

Further, said method also can comprise following characteristics: in the said IP-CAN session modification flow process, also comprise:

After said source S-GW or trusted non-3 GPP access network close and receive the request of deletion gateway control session, carry the sign of the PDN that ID and user will insert in the message;

Said source S-GW or trusted non-3 GPP access network close to said vPCRF and send gateway control session termination Indication message, carry the data network sign that ID and user will insert in the message;

Said vPCRF deletes old gateway control session according to said ID and data network sign;

Said source S-GW or trusted non-3 GPP access network close QoS rule and event trigger deletion that gateway control session is relevant, and the transmit leg that disappears to the request of deletion gateway control session then returns the deletion gateway control session and replys.

Further, said method also can comprise following characteristics:

Said IP-CAN session modification flow process is because resource that the user please look for novelty or release resource are initiated, and further comprises:

Resident have the S-GW of said BBERF or trusted non-3 GPP access network pass to receive gateway control session modification message; Judging has the incident of said event trigger definition to take place; Send gateway control and QoS rule request message to said vPCRF, carry the event report and the affected PCC rule that change;

Said vPCRF sends IP-CAN session modification Indication message to said hPCRF, carries the event report and the affected PCC rule that change;

Said hPCRF reformulates the PCC rule according to the information of said event report, sends to said vPCRF through IP-CAN session modification acknowledge message;

Said vPCRF sends to said S-GW or trusted non-3 GPP access network pass according to the PCC Rulemaking QoS rule that issues through gateway control and QoS rule response message;

Said S-GW or trusted non-3 GPP access network close when judgement Qos rule is new; This Qos rule is installed; Return gateway control and the QoS rule is replied acknowledge message to said vPCRF, and return gateway control session to the transmit leg that gateway control session is revised message and revise response message;

The PCC rule that said vPCRF also issues said hPCRF gives information through strategy and charging regulation and is handed down to P-GW, and said P-GW installs said PCC rule, and to said vPCRF transmission strategy and charging regulation affirmation is provided.

Further, said method also can comprise following characteristics:

Said IP-CAN session modification flow process is initiated owing to business information or user signing contract information change, and further comprises:

Said hPCRF carries out strategic decision-making and mandate after receiving business information or user signing contract information, reformulates the PCC rule, and giving information through strategy and charging regulation sends to said vPCRF;

Said vPCRF reformulates the QoS rule according to the PCC rule that issues, and gives information through gateway control and QoS rule the QoS rule is sent to S-GW or the trusted non-3 GPP access network closes, and giving information through tactful and charging regulation sends to P-GW;

The said QoS rule of said S-GW or the installation of trusted non-3 GPP access network pass is returned gateway control and the QoS rule provides acknowledge message; Said P-GW installs said PCC rule, returns strategy and charging regulation acknowledge message is provided;

Said vPCRF to said hPCRF return the strategy and charging regulation acknowledge message is provided.

Further, said method also can comprise following characteristics:

Said hPCRF goes back the update event trigger when reformulating the PCC rule, and is handed down to said vPCRF together with the said PCC rule of reformulating;

Said vPCRF also is handed down to said P-GW with event trigger after the said renewal and PCC rule together, and S-GW or trusted non-3 GPP access network pass;

Said P-GW, and S-GW or trusted non-3 GPP access network are installed after closing the event trigger of receiving after the said renewal.

In order to solve the problems of the technologies described above, the present invention provides a kind of method of policy and charging control of concealing visited place network topological structure again, is applied to IP connection access network IP-CAN session and sets up process, comprising:

Set up in the process in the IP-CAN session; Resident S-GW that bearing binding and event reporting function BBERF arranged or trusted non-3 GPP access network close through gateway control message and access zone network "Policy and Charging Rules Function vPCRF mutual, and QoS rule and event trigger that it issues are installed;

And; After said S-GW or trusted non-3 GPP access network close and select the resident data network gateway P-GW that strategy and charge execution function PCEF arranged; Set up the IP-CAN conversation request message to the P-GW transmission; Said P-GW obtains strategy and charging control PCC rule and event trigger or regular and event trigger and the installation through the amended PCC of said vPCRF that home network "Policy and Charging Rules Function hPCRF formulates through the IP-CAN conversation message through said vPCRF.

Further, said method also can comprise following characteristics: said IP-CAN session is set up process and may further comprise the steps:

After the S-GW of the resident BBERF of having or trusted non-3 GPP access network pass receive and set up the gateway control session request message; Select P-GW; And send gateway control to said vPCRF and set up Indication message, carry that data network that ID and user will insert identifies and the indication information of roam mode;

Said vPCRF has adopted the roaming mode of local break-out based on said indication information judges; And when not having the IP-CAN session between vPCRF and the hPCRF; For QoS rule and event trigger are formulated in this session, set up acknowledge message through gateway control session and send to said S-GW or trusted non-3 GPP access network pass;

Said S-GW or trusted non-3 GPP access network close installs QoS rule and event trigger;

Said S-GW or trusted non-3 GPP access network close to the P-GW of the resident PCEF of having that selects transmission sets up the IP-CAN conversation request message, carries the data network sign that ID and user will insert;

Said P-GW sends the IP-CAN session to vPCRF and sets up Indication message, carries the data network sign that ID and user will insert;

Said vPCRF is associated said IP-CAN session and gateway control according to the data network sign that ID and user will insert, and sets up Indication message to said hPCRF transmission IP-CAN session;

Said hPCRF formulates PCC rule and event trigger for this session, sets up acknowledge message through the IP-CAN session and sends to said vPCRF;

Said vPCRF sends the IP-CAN session to said P-GW and sets up acknowledge message, carry the PCC rule that issues and event trigger or through the amended PCC of said vPCRF regular and event trigger make amendment;

Said P-GW installs PCC rule and event trigger, closes to return to said S-GW or trusted non-3 GPP access network then and sets up the IP-CAN session response message;

Said S-GW or trusted non-3 GPP access network pass are returned to the transmit leg of setting up the gateway control session request and are set up the gateway control session response message.

Further, said method also can comprise following characteristics:

Said vPCRF also reformulates QoS rule and event trigger based on PCC rule and event trigger that said hPCRF issues; If different, then give information new QoS rule and/or event trigger are handed down to said S-GW or trusted non-3 GPP access network pass through gateway control and QoS rule with the QoS rule and/or the event trigger that are handed down to said S-GW or trusted non-3 GPP access network pass before;

Said S-GW or trusted non-3 GPP access network close installs new QoS rule and event trigger, returns gateway control and the QoS rule provides acknowledge message to vPCRF then.

Further, said method also can comprise following characteristics:

The subscriber equipment of initiating said session inserts the grouping system of said 3GPP evolution with the roam mode of local break-out through the UTRAN of evolution, and adopts the PMIPv6 agreement between said S-GW and the data network gateway P-GW; The subscriber equipment of perhaps initiating said session adopts the PMIPv6 agreement to insert the grouping system of said 3GPP evolution with the roam mode of local break-out.

In order to solve the problems of the technologies described above, the present invention also provides a kind of method of policy and charging control of concealing visited place network topological structure, is applied to IP connection access network session termination flow process, comprising:

Resident gateway S-GW that bearing binding and event reporting function BBERF arranged or trusted non-3 GPP access network close and receive deletion IP connection access network is the IP-CAN conversation request message, carries the data network that ID and user will insert and identifies;

Said S-GW or trusted non-3 GPP access network close according to ID will insert relevant QoS rule and the event trigger of data network sign deletion with the user; And to access zone network "Policy and Charging Rules Function vPCRF transmission gateway control session ending message; Relevant QoS rule and the event trigger of said vPCRF deletion, and return gateway control session termination acknowledge message;

Said S-GW or trusted non-3 GPP access network close to said P-GW and send deletion IP-CAN conversation request message, carry the data network sign that ID and user will insert in the message; Said P-GW sends the indication of IP-CAN session termination according to the sign of the PDN that ID and user will insert to said vPCRF, and deletion local relevant PCC rule and event trigger;

Relevant PCC rule and the event trigger of said vPCRF deletion, and send the IP-CAN session termination to home network "Policy and Charging Rules Function hPCRF and indicate;

Relevant PCC rule and the event trigger of said hPCRF deletion; And return the IP-CAN session termination to vPCRF and confirm; Returning the IP-CAN session termination to said P-GW after said vPCRF receives confirms; After said P-GW receives, close to S-GW or trusted non-3 GPP access network and to return deletion IP-CAN session and reply;

Said S-GW or trusted non-3 GPP access network pass are returned deletion IP-CAN session to deletion IP-CAN session and are replied.

Compared with prior art, the invention enables access zone network can hide topology of networks, the S9 interface has been simplified the S9 interface as long as support the agreement that the Gx interface is supported simultaneously.

Description of drawings

Fig. 1 is the non-roaming Organization Chart of EPS in the prior art;

Fig. 2 is the roaming Organization Chart that UE adopts Home Routed in the prior art;

Fig. 3 is the roaming Organization Chart that UE adopts LBO in the prior art;

Fig. 4 is a flow chart of setting up the IP-CAN session in the embodiment of the invention;

Fig. 5 is a flow chart of revising the IP-CAN session in the embodiment of the invention;

Fig. 6 is a flow chart of revising the IP-CAN session in the embodiment of the invention;

Fig. 7 is a flow chart of revising the IP-CAN session in the embodiment of the invention;

Fig. 8 is the flow chart of termination IP-CAN session in the embodiment of the invention.

Embodiment

The present invention is in order to solve the drawback that conventional solution exists; Further set forth the method for the policy and charging control of a kind of concealing visited place network topological structure of the present invention through following specific embodiment; Below embodiment is described in detail, but not as to qualification of the present invention.

What present embodiment was described is to be under the local break-out roaming scence as UE, and flow chart was set up in the IP-CAN session when UE adopted the PMIPv6 agreement to insert through adopting PMIPv6 agreement or UE between E-UTRAN access and S-GW and the P-GW through the trusted non-3 GPP access network.Present embodiment is as shown in Figure 4, and each step is described below:

401, the S-GW of the resident BBERF of having or trusted non-3 GPP access network close to receive and set up the gateway control session request message.When inserting through E-UTRAN, this message is that the default bearing that MME sends is set up request message, and when inserting through trusted non-3 GPP access network pass, the layer 3 in this message trusted non-3 GPP access network adheres to message.Carry ID in the message, like NAI (NetworkAccess Identifier, network access Identifier)) and the sign of the user PDN that will insert, like APN (Access Point Name, Access Point Name);

402, S-GW or trusted non-3 GPP access network close the P-GW that has selected access zone network, and promptly the user adopts the roaming mode of local break-out.Resident BBERF wherein sends the gateway control request message to access zone network vPCRF, and the sign and the LBO that carry the PDN that ID and user will insert in the message indicate;

When concrete the realization, the LBO indication can be the ID of P-GW place network, vPCRF can with the ID of own place network and LBO indicate with the P-GW ID that belongs to network compare.If identical, the user has adopted the roaming mode of LBO, if inequality, the user has adopted the roaming mode of Home Routed.Also can compare here and judge the roaming mode, also can accomplish,, not influence the present invention program's execution for the selection of judging the roaming mode here by other modes without ID among the LBO.

403, vPCRF has adopted the roaming mode of LBO according to LBO indication judges; And there is not the IP-CAN session between vPCRF and the hPCRF; Therefore vPCRF will be according to this policy development QoS rule and event trigger, and sets up acknowledge message through gateway control session and send to BBERF; S-GW or trusted non-3 GPP access network close installs QoS rule and event trigger;

404, S-GW or trusted non-3 GPP access network close receive set up the gateway control session request message after, send to the P-GW of the resident PCEF of having and to set up the IP-CAN conversation request message, carry the sign of the PDN that ID and user will insert in the message;

405, P-GW (reside in other words conj.or perhaps P-GW PCEF) sends the IP-CAN session to vPCRF and sets up Indication message, carries the sign of the PDN that ID and user will insert in the message;

406, the sign of the vPCRF PDN that will insert according to ID and user is carried out IP-CAN session and gateway control related, and sends the IP-CAN session to hPCRF and sets up Indication message;

407, hPCRF is according to user's CAMEL-Subscription-Information, and network strategy etc. are made a strategic decision, and formulates PCC rule and event trigger;

408, hPCRF sets up acknowledge message through the IP-CAN session and sends PCC rule and event trigger to vPCRF;

409, vPCRF sends the IP-CAN session to P-GW and sets up acknowledge message, carries PCC rule and event trigger.VPCRF may make amendment to PCC rule and event trigger that hPCRF issues according to local policy;

410, P-GW installs PCC rule and event trigger, closes to return to S-GW or trusted non-3 GPP access network then and sets up the IP-CAN session response message;

411, vPCRF reformulates QoS rule and event trigger based on PCC rule and event trigger that hPCRF issues; If different with the QoS rule or the event trigger that are handed down to BBERF before, then vPCRF gives information through gateway control and QoS rule new QoS rule and event trigger is handed down to BBERF;

412, S-GW or trusted non-3 GPP access network close to be installed new QoS rule and event trigger, return gateway control and the QoS rule provides acknowledge message to vPCRF then;

413, S-GW or trusted non-3 GPP access network close to return and set up the gateway control session response message.

After as above an embodiment sets up the IP-CAN session, initiate the IP-CAN session modification owing to BBERF switches, as shown in Figure 5, each step is described below:

501, purpose S-GW or trusted non-3 GPP access network pass is received and is set up the gateway control session request message.When inserting through E-UTRAN, this message is that the default bearing that MME sends is set up request message, and when inserting through trusted non-3 GPP access network pass, this message is that the layer 3 in the trusted non-3 GPP access network adheres to message.Carry the sign of the PDN that ID and user will insert in the message;

502, the purpose S-GW of the resident BBERF of having or trusted non-3 GPP access network close and to send gateway control session to vPCRF and set up Indication message (being that BBERF sends gateway control session message to vPCRF), and the sign and the LBO that carry the PDN that ID and user will insert in the message indicate.The network ID of P-GW in vPCRF self networks ID and the above-mentioned message is identical.VPCRF carries out related with the IP-CAN session of setting up before this gateway control session according to ID with the PDN sign that the user will insert;

503, (change has taken place in the position like UE if the incident of describing in the event trigger that hPCRF issues before takes place; Change etc. has taken place in the access technology type); VPCRF sends the indication of IP-CAN session modification to hPCRF, carries the event report and the affected PCC rule that change in the message;

Whether the incident that vPCRF also might not carry out describing in the decision event trigger takes place; Just information entrained in the gateway control session message is sent to hPCRF through IP-CAN session modification Indication message; Comprise the sign of carrying the PDN that ID and user will insert, and new positional information or access technology type etc.;

504, hPCRF reformulates the PCC rule according to the information of event report, and sends to vPCRF through IP-CAN session modification acknowledge message.The also possible update event trigger of hPCRF, and be handed down to vPCRF;

If hPCRF does not receive event report; The information that it carries according to IP-CAN session modification message; The sign of the PDN that will insert like ID and user; And new positional information or access technology type etc. reformulate the PCC rule, and send to vPCRF through IP-CAN session modification acknowledge message;

505, vPCRF reformulates the QoS rule based on the PCC rule, and sets up acknowledge message through gateway control session QoS rule and event trigger (if upgrade, down with) are sent to purpose S-GW or trusted non-3 GPP access network pass.Purpose S-GW or trusted non-3 GPP access network close installs the QoS rule;

506, purpose S-GW or trusted non-3 GPP access network close receiving setting up behind the gateway control session request message in 501 steps and send to P-GW and to set up the IP-CAN conversation request message, carry the sign of the PDN that ID and user will insert in the message;

This step and follow-up correlation step and step 502 and follow-up correlation step can walk abreast, and do not have fixing sequencing.

507, resident have the P-GW of PCEF to send the indication of IP-CAN session modification to vPCRF;

508, if the incident of describing in the event trigger that hPCRF issues takes place, vPCRF sends IP-CAN session modification Indication message to hPCRF, carries the event report and the affected PCC rule that change in the message;

509, hPCRF reformulates the PCC rule according to the information of event report, and sends to vPCRF through IP-CAN session modification acknowledge message.The also possible update event trigger of hPCRF, and be handed down to vPCRF;

510, vPCRF sends PCC rule and event trigger (if hPCRF update event trigger) through IP-CAN session modification acknowledge message to P-GW, and the vPCRF rule may be made amendment to the PCC rule that hPCRF issues according to local policy;

511, P-GW installs PCC rule and event trigger, and sets up the IP-CAN session response message to purpose S-GW or the transmission of trusted non-3 GPP access network pass;

512, if change has taken place in the PCC rule that the PCC rule that issues in 509 steps issues in going on foot with 506; Then vPCRF reformulates QoS rule and event trigger based on up-to-date PCC rule, and then vPCRF gives information through gateway control and QoS rule QoS rule after upgrading and event trigger (if renewal) are handed down to S-GW or trusted non-3 GPP access network pass;

Step 512 is optional.

513, S-GW or trusted non-3 GPP access network close to be installed QoS rule and event trigger (if renewal), and return gateway control and the QoS rule provides acknowledge message to vPCRF.

514, purpose S-GW or trusted non-3 GPP access network close and to receive setting up in 511 steps and return after the IP-CAN session response message and set up the gateway control session response message;

515, source S-GW or trusted non-3 GPP access network close and to receive deletion gateway control session request message, carry the sign of the PDN that ID and user will insert in the message;

516, source S-GW or trusted non-3 GPP access network close to vPCRF and send gateway control session termination Indication message, carry the sign of the PDN that ID and user will insert in the message;

517, the sign of the vPCRF PDN that will insert according to ID and user is with old gateway control session deletion;

518, source S-GW or trusted non-3 GPP access network close QoS rule that gateway control session is relevant and event trigger deletion, return the deletion gateway control session then and reply.

After setting up the IP-CAN session like first embodiment, because the resource that the user please look for novelty or discharge resource and initiate the IP-CAN session modification, as shown in Figure 6, each step is described below:

601, the S-GW of the resident BBERF of having or trusted non-3 GPP access network close and receive the gateway control session modify request messages.When inserting through E-UTRAN, this message is that the default bearing that MME sends is set up request message, and when inserting through trusted non-3 GPP access network pass, this message is that the layer 3 in the trusted non-3 GPP access network adheres to message.；

602, because the incident that defines in the event trigger that issues before generation; Resident have the S-GW of BBERF or trusted non-3 GPP access network to close to vPCRF transmission gateway control and QoS rule request message, carries the event report and the affected QoS rule that change in the message;

603, vPCRF sends the indication of IP-CAN session modification to hPCRF, carries the event report and the affected PCC rule that change in the message;

604, hPCRF reformulates the PCC rule according to the information of event report, and sends to vPCRF through IP-CAN session modification acknowledge message.The also possible update event trigger of hPCRF, and be handed down to vPCRF;

605, vPCRF reformulates the QoS rule according to the PCC rule that issues, and sends to S-GW or trusted non-3 GPP access network pass through gateway control and QoS rule response message, if hPCRF update event trigger, event trigger also issues together;

606, S-GW or trusted non-3 GPP access network close to be installed new Qos rule and event trigger (if renewal), and return gateway control and the QoS rule is replied acknowledge message to vPCRF;

607, S-GW or trusted non-3 GPP access network close and return gateway control session modification response message;

608, vPCRF gives information the PCC rule that issues and event trigger (if renewal) in 604 steps and is handed down to P-GW through strategy and charging regulation;

609, P-GW installs the PCC rule, and to vPCRF transmission strategy and charging regulation affirmation is provided.

After setting up the IP-CAN session like first embodiment, wait and trigger PCRF initiation IP-CAN session modification because business information changes or user signing contract information changes, as shown in Figure 7, each step is described below:

701, alternatively, AF offers hPCRF with business information;

702, hPCRF preserves business information, returns acknowledge message to AF;

703, hPCRF carries out strategic decision-making and mandate, reformulates the PCC rule.HPCRF might the update event trigger;

704, hPCRF gives information PCC rule and event trigger (if renewal) and sends to vPCRF through strategy and charging regulation;

705, vPCRF reformulates the QoS rule according to the PCC rule that issues, and gives information through gateway control and QoS rule that (if renewal) sends to S-GW or trusted non-3 GPP access network pass with event trigger with the QoS rule;

706, S-GW or trusted non-3 GPP access network close to be installed QoS rule and event trigger (if renewal), and return gateway control and the QoS rule provides acknowledge message;

707, vPCRF gives information PCC rule and event trigger and sends to P-GW through strategy and charging regulation;

708, P-GW installs PCC rule and event trigger, and returns strategy and charging regulation provides acknowledge message;

709, vPCRF returns strategy and charging regulation provides acknowledge message to hPCRF.

Be noted that above-mentioned vPCRF closes to S-GW or trusted non-3 GPP access network, the sequencing of regular operation can have different set with issue QoS to P-GW, and the present invention is not limited to the order of the foregoing description.

After setting up the IP-CAN session like first embodiment, as shown in Figure 8 owing to the IP-CAN session termination is initiated in user's attachment removal, each step is described below:

801, the S-GW of the resident BBERF of having or trusted non-3 GPP access network close the request message that receives deletion IP-CAN session.When inserting through E-UTRAN, this message is that the default bearing that MME sends is set up request message, and when inserting through trusted non-3 GPP access network pass, this message is that the layer 3 in the trusted non-3 GPP access network adheres to message.Carry the sign of the PDN that ID and user will insert in the message;

802, S-GW or trusted non-3 GPP access network close relevant QoS rule and the event trigger of sign deletion of the PDN that will insert based on ID and user, and to vPCRF transmission gateway control session ending message;

803, relevant QoS rule and the event trigger of vPCRF deletion, and return gateway control session termination acknowledge message;

804, S-GW or trusted non-3 GPP access network close to P-GW and send deletion IP-CAN conversation request message, carry the sign of the PDN that ID and user will insert in the message;

805, the sign of the P-GW PDN that will insert according to ID and user is sent the indication of IP-CAN session termination to vPCRF;

806, relevant PCC rule and the event trigger of vPCRF deletion, and send the IP-CAN session termination to hPCRF and indicate;

807, relevant PCC rule and the event trigger of P-GW deletion;

Step 806 and 807 can be carried out simultaneously.

808, relevant PCC rule and the event trigger of hPCRF deletion, and return the IP-CAN session termination to vPCRF and confirm;

809, vPCRF returns the affirmation of IP-CAN session termination to P-GW;

810, P-GW closes to S-GW or trusted non-3 GPP access network and returns deletion IP-CAN session and reply;

811, S-GW or trusted non-3 GPP access network close and to return deletion IP-CAN session and reply.

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 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

1. the method for the policy and charging control of a concealing visited place network topological structure is applied to the grouping system of 3GPP evolution, comprising:

In the IP of subscriber equipment connection access network is in the IP-CAN session modification flow process; After access zone network "Policy and Charging Rules Function vPCRF receives the gateway control session message of bearing binding and event reporting function BBERF transmission; Adopt IP-CAN conversation message and home network "Policy and Charging Rules Function hPCRF mutual, obtain strategy that said hPCRF reformulates and charging control PCC rule and be handed down to said BBERF through gateway control session message;

Wherein, said BBERF resides on the gateway S-GW, and said subscriber equipment inserts the grouping system of said 3GPP evolution with the roam mode of local break-out through the UTRAN of evolution, and adopts the PMIPv6 agreement between said S-GW and the data network gateway P-GW; Perhaps said BBERF resides in the trusted non-3 GPP access network and shuts, and said subscriber equipment adopts the PMIPv6 agreement to insert the grouping system of said 3GPP evolution with the roam mode of local break-out;

Wherein, said IP-CAN session modification flow process is initiated owing to BBERF switches, and perhaps said IP-CAN session modification flow process is because resource that the user please look for novelty or release resource are initiated.

2. strategic charging control method as claimed in claim 1 is characterized in that, also comprises:

In the IP-CAN of subscriber equipment session was set up, said vPCRF preserved the event trigger that said hPCRF issues;

In the session modification flow process of subscriber equipment; When said IP-CAN session modification flow process is owing to BBERF switches when initiating; Said vPCRF judges whether that the incident that said event trigger is described takes place after receiving the gateway control session message that said BBERF sends; If any, adopt IP-CAN conversation message and said hPCRF mutual.

3. strategic charging control method as claimed in claim 2 is characterized in that, also comprises:

In the IP-CAN of said subscriber equipment session modification flow process, when said IP-CAN session modification flow process is owing to BBERF switches when initiating, said vPCRF receives the IP-CAN conversation message of strategy and charge execution function PCEF transmission;

4. strategic charging control method as claimed in claim 1 is characterized in that:

5. strategic charging control method as claimed in claim 4 is characterized in that, said IP-CAN session modification flow process also comprises:

After said purpose S-GW or trusted non-3 GPP access network pass are received and are set up the gateway control session request message; Also send and set up the IP-CAN conversation request message, carry the sign of the data network PDN that ID and user will insert to the said P-GW of the resident PCEF of having;

Said P-GW sends the indication of IP-CAN session modification to said vPCRF;

6. strategic charging control method as claimed in claim 5 is characterized in that, also comprises:

After said vPCRF receives the PCC rule that said hPCRF issues through IP-CAN session modification acknowledge message; Judge whether that also to set up the PCC rule that acknowledge message issues through gateway control session identical with said hPCRF; If change; The PCC rule that then issues according to IP-CAN session modification acknowledge message is reformulated the QoS rule, gives information through gateway control and QoS rule and closes to said purpose S-GW or trusted non-3 GPP access network the QoS rule downloading after upgrading;

Said purpose S-GW or trusted non-3 GPP access network close receives that the QoS that gives information gateway control and QoS rule the back installs wherein is regular, returns gateway control and the QoS rule provides acknowledge message to said vPCRF.

7. strategic charging control method as claimed in claim 5 is characterized in that, in the said IP-CAN session modification flow process, also comprises:

After source S-GW or trusted non-3 GPP access network close and receive the request of deletion gateway control session, carry the sign of the PDN that ID and user will insert in the message;

Said source S-GW or trusted non-3 GPP access network close QoS rule and event trigger deletion that gateway control session is relevant, return the deletion gateway control session to the transmit leg of deleting the gateway control session request message then and reply.

8. strategic charging control method as claimed in claim 1 is characterized in that:

9. like the described strategic charging control method of arbitrary claim in the claim 4 to 8, it is characterized in that:

10. the method for the policy and charging control of a concealing visited place network topological structure is applied to the grouping system of 3GPP evolution, comprising:

In the IP of subscriber equipment connection access network is in the IP-CAN session modification flow process, initiates owing to business information or user signing contract information change when said IP-CAN session modification flow process, comprising:

Home network "Policy and Charging Rules Function hPCRF carries out strategic decision-making and mandate after receiving business information or user signing contract information; Reformulate strategy and charging control PCC rule, giving information through strategy and charging regulation sends to access zone network "Policy and Charging Rules Function vPCRF;

Said vPCRF reformulates the QoS rule based on the PCC rule that issues; And give information through gateway control and QoS rule and the QoS rule to be sent to gateway S-GW or trusted non-3 GPP access network close, giving information through strategy and charging regulation sends to data network gateway P-GW;

Said vPCRF to said hPCRF return the strategy and charging regulation acknowledge message is provided;

Wherein, Bearing binding and event reporting function BBERF reside on the gateway S-GW; Said subscriber equipment inserts the grouping system of said 3GPP evolution with the roam mode of local break-out through the UTRAN of evolution, and adopts the PMIPv6 agreement between said S-GW and the data network gateway P-GW; Perhaps said BBERF resides in the trusted non-3 GPP access network and shuts, and said subscriber equipment adopts the PMIPv6 agreement to insert the grouping system of said 3GPP evolution with the roam mode of local break-out.

11. strategic charging control method as claimed in claim 10 is characterized in that:

12. the method for the policy and charging control of a concealing visited place network topological structure, process is set up in the grouping system IP connection access network IP-CAN session that is applied to 3GPP evolution, comprising:

Set up in the process in the IP-CAN session; Resident gateway S-GW that bearing binding and event reporting function BBERF arranged or trusted non-3 GPP access network close through gateway control message and access zone network "Policy and Charging Rules Function vPCRF mutual, and QoS rule and event trigger that it issues are installed;

And; After said S-GW or trusted non-3 GPP access network close and select the resident data network gateway P-GW that strategy and charge execution function PCEF arranged; Set up the IP-CAN conversation request message to the P-GW transmission; Said P-GW obtains strategy and charging control PCC rule and event trigger or regular and event trigger and the installation through the amended PCC of said vPCRF that home network "Policy and Charging Rules Function hPCRF formulates through the IP-CAN conversation message through said vPCRF; Wherein, said vPCRF according to the local break-out LBO that carries in the gateway control message indication judge the roaming mode that the user has adopted local break-out, and judge do not have the IP-CAN session between vPCRF and the hPCRF after, formulate QoS rule and event trigger;

Wherein, said BBERF resides on the gateway S-GW, and subscriber equipment inserts the grouping system of said 3GPP evolution with the roam mode of local break-out through the UTRAN of evolution, and adopts the PMIPv6 agreement between said S-GW and the data network gateway P-GW; Perhaps said BBERF resides in the trusted non-3 GPP access network and shuts, and said subscriber equipment adopts the PMIPv6 agreement to insert the grouping system of said 3GPP evolution with the roam mode of local break-out.

13. method as claimed in claim 12 is characterized in that, said IP-CAN session is set up process and may further comprise the steps:

Said vPCRF sends the IP-CAN session to said P-GW and sets up acknowledge message, carries the PCC rule that issues and event trigger or through amended PCC rule of said vPCRF and event trigger;

14. method as claimed in claim 13 is characterized in that, also comprises:

15., it is characterized in that like claim 12,13 or 14 described methods:

16. the method for the policy and charging control of a concealing visited place network topological structure is applied to the IP connection access network owing to IP-CAN session termination flow process is initiated in user's attachment removal, comprising:

Resident gateway S-GW that bearing binding and event reporting function BBERF arranged or trusted non-3 GPP access network close and receive deletion IP connection access network is the IP-CAN conversation request message, carries the data network that ID and user will insert in the message and identifies;

Said S-GW or trusted non-3 GPP access network close to data network gateway P-GW and send deletion IP-CAN conversation request message, carry the data network sign that ID and user will insert in the message; Said P-GW sends the indication of IP-CAN session termination according to the sign of the data network PDN that ID and user will insert to said vPCRF, and deletion local relevant strategy and charging control PCC rule and event trigger;

Said S-GW or trusted non-3 GPP access network pass are returned deletion IP-CAN session to deletion IP-CAN session and are replied;

Wherein, said BBERF resides on the gateway S-GW, and subscriber equipment inserts the grouping system of 3GPP evolution with the roam mode of local break-out through the UTRAN of evolution, and adopts the PMIPv6 agreement between said S-GW and the data network gateway P-GW; Perhaps said BBERF resides in the trusted non-3 GPP access network and shuts, and said subscriber equipment adopts the PMIPv6 agreement to insert the grouping system of said 3GPP evolution with the roam mode of local break-out.