CN101198171A - Routing method for strategy charging control information in roaming scene - Google Patents
Routing method for strategy charging control information in roaming scene Download PDFInfo
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- CN101198171A CN101198171A CNA200710186139XA CN200710186139A CN101198171A CN 101198171 A CN101198171 A CN 101198171A CN A200710186139X A CNA200710186139X A CN A200710186139XA CN 200710186139 A CN200710186139 A CN 200710186139A CN 101198171 A CN101198171 A CN 101198171A
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Abstract
The invention discloses a routing method of policy charging control information under a roaming scenario. At first, a visited network element transmits a request message to a visited PCRF according to the address of the visited PCRF sent back by a visited DRA; then, the visited PCRF searches corresponding conversation records according to the request message and transmits the request message to the region PCRF after determining the region PCRF according to the result sought. The technical proposal of the invention correlates all PCEF or GWCF related to one IP-CAN conversation to the same region PCRF and visited PCRF under the roaming scenario.
Description
Technical field
The present invention relates to a kind of method for routing of strategy charging control information, the method for routing of the strategy charging control information of EPS under especially a kind of roaming scence (Evolved Packet System, the grouping system of evolution).
Background technology
3GPP (3rd Generation Partnership Project, third generation partner program) EPS is by E-UTRAN (Evolved Universal Terrestrial RadioAccess Network, the Universal Terrestrial Radio Access Network of evolution), MME (MobilityManagement Entity, mobile management unit), S-GW (Serving Gateway, gateway), 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) entity and other support nodes are formed, also the PCRF entity is called policy billing control server in the literary composition, is abbreviated as PCRF.Wherein, 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), is responsible for the access of PDN, transmits data etc. between EPS and PDN; PCRF is by Rx interface and the IP (InternetProtocol of operator, Internet protocol) business network interface, obtain business information, it links to each other another side with gateway device in the network by the S7/S7a/S7c interface, be responsible for initiating the foundation of IP carrying, guarantee the QoS (Quality of Service, service quality) of business datum, and the control of chargeing.
EPS supports the intercommunication with non-3GPP network.Realize that by the S2a/b/c interface P-GW is then as 3GPP network and the internetwork anchor point of non-3GPP with the intercommunication of non-3GPP network.Non-3GPP network comprises the non-3GPP network of trusted and trustless non-3GPP network.The IP of the non-3GPP network of trusted inserts can be directly by S2a and P-GW interface; The IP of trustless non-3GPP network 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 traditional 3GPP network, PCEF (Policy and charging enforcementfunction, strategy and charge execution function) exist only among the P-GW, PCRF passes through S7 interface exchange message as long as be connected the control that can finish all functions with P-GW between PCRF and P-GW.Interface when between P-GW and S-GW is based on PMIP (Proxy Mobile IP, proxy-mobile IP) time, policy enforcement function part in the PCEF function also is present among the S-GW, be called GWCF (Gateway Control Function, gateway control function), such as, the binding functions of carrying etc. pass through S7c interface exchange message between S-GW and the PCRF.When the non-3GPP network insertion of trusted, the also resident GWCF in the trusted non-3 GPP access network Central Shanxi Plain, between non-3GPP network access gateway of trusted and the PCRF by S7a interface exchange message.UE (User Equipment, when subscriber equipment) roaming, the S9 interface is as the interface of ownership place PCRF and visit ground PCRF, simultaneously, for UE provides professional AF (Application Function, application function) sends the business information that is used to generate PCC (Policy and Charging Control, policy and charging control) strategy to PCRF by the Rx+ interface.
The PLMN of EPS (Public Land Mobile Network, the public land mobile telephone network) there are a plurality of PCRF nodes in, and all PCRF nodes belong to one or more Diameter (PCRF) territory, and all PCRF in same Diameter (PCRF) territory are equality.UE is called an IP-CAN (IPConnectivity Access Network, IP connects Access Network) session to the connection of PDN network.The PCC strategy of an IP-CAN session is only by a PCRF decision.All PCEFs or the GWCF relevant in order to ensure an IP-CAN session are associated with same PCRF, and EPS has introduced a logic function module DRA (Diameter Routing Agent, Diameter route agent) in each Diameter (PCRF) territory.When UE will be established to the IP-CAN session of a PDN, be that a PCRF is selected in this IP-CAN session by DRA, PCEF or the GWCF relevant with this IP-CAN session are associated with on the selected PCRF by DRA.Yet, under roaming scence, how by DRA all PCEF that an IP-CAN session is relevant or GWCF is associated with same ownership place PCRF and visit ground PCRF does not have solution preferably at present.
Summary of the invention
The technical problem to be solved in the present invention provides the method for routing of the strategy charging control information under a kind of roaming scence, thereby all PCEF that will be relevant with IP-CAN session or GWCF are associated with same ownership place PCRF and visit ground PCRF.
The technical solution adopted for the present invention to solve the technical problems is:
The method for routing of the strategy charging control information under a kind of roaming scence may further comprise the steps:
A, visit earth mat unit send a request message to described visit ground PCRF according to the address of the visit ground PCRF that visit ground DRA returns;
B, described visit ground PCRF is according to the record of the corresponding session of described request information query, and after determining ownership place PCRF according to Query Result, described request message sent to described ownership place PCRF.
In the such scheme, described step a specifically realizes by following steps:
A1, described visit ground DRA inquire about the record of corresponding session according to the request message of described visit ground network element, if selected the visit ground PCRF for described conversational services, then directly enter step a3, otherwise, enter step a2;
A2, described visit ground DRA select visit ground PCRF, and preserve the corresponding relation of described visit ground PCRF and described session;
A3, described visit ground DRA return to described visit ground network element with the address of described visit ground PCRF;
A4, described visit earth mat unit send described request message according to described address to described visit ground PCRF.
In the such scheme, described step b specifically realizes by following steps:
B1, described visit ground PCRF inquire about the record of corresponding session according to described request message, if selected to be then directly to enter step b3 by the ownership place PCRF of described conversational services, otherwise, enter step b2;
B2, described visit ground PCRF transmits described request message to ownership place DRA, and described ownership place DRA returns the address of the ownership place PCRF of selection according to described request message, and described visit ground PCRF preserves the corresponding relation of described ownership place PCRF and described session;
B3, described visit ground PCRF send described request message to described ownership place PCRF.
In the such scheme, described step b2 further realizes by following steps:
B21, described visit ground PCRF transmit described request message to described ownership place DRA;
B22, described ownership place DRA inquire about the record of described session according to described request message, if selected to be then directly to enter step b24 by the ownership place PCRF of described conversational services, otherwise, enter step b23;
B23, described ownership place DRA select ownership place PCRF, and preserve the corresponding relation of described ownership place PCRF and described session;
B24, described ownership place DRA return the address of ownership place PCRF, and described visit ground PCRF preserves the corresponding relation of described ownership place PCRF and described session.
In the such scheme, described ownership place PCRF generates and issues corresponding strategy after receiving described request message, when issuing corresponding strategy, at first it is handed down to visit ground PCRF, is handed down to described visit ground network element after described visit ground PCRF makes amendment to it according to local policy again.
In the such scheme, the attribute of the corresponding relation that described visit ground DRA preserves comprises: the address of the sign of the PDN that roamer's sign, described roamer's address, described roamer will insert and described visit ground PCRF; The attribute of the corresponding relation that described ownership place DRA preserves comprises the sign of the PDN that described roamer's sign, described roamer's address, described roamer will insert and the address of described ownership place PCRF; The attribute of the corresponding relation that described visit ground PCRF preserves comprises: the sign of the PDN that described roamer's sign, described roamer's address, described roamer will insert and the address of described ownership place PCRF.
In the such scheme, when described visit ground network element is P-GW, described request message comprise described roaming UE the address of sign, described roaming UE and the sign of the PDN that will insert, after described ownership place PCRF receives described request message, generate the PCC strategy.
In the such scheme, when described visit ground network element is S-GW or the non-third generation partner program of trusted network access gateway, described request message comprises the address of the sign of described roaming UE, described roaming UE and the sign of the PDN that will insert, after described ownership place PCRF receives described request message, generate QoS (Quality of Service, service quality) strategy.
In the such scheme, described visit ground network element is for when described roaming UE provides the AF of business, described request message comprises the address of described roaming UE and the sign of the PDN that will insert, after described ownership place PCRF receives described request message, according to business information generation PCC strategy and qos policy wherein.
In the such scheme, described roaming UE be designated NAI (Network AccessIdentification, network access Identifier), the described PDN that will insert be designated network AP N (Access Point Name, Access Point Name).
Beneficial effect of the present invention mainly shows: technical scheme provided by the invention realized under roaming scence, by DRA all PCEFs or the GWCF relevant with IP-CAN session is associated with same ownership place PCRF and visit ground PCRF.
Description of drawings
Fig. 1 is the roaming Organization Chart of the local route of EPS;
The roaming Organization Chart that Fig. 2 provides IP operation for local break-out and the home network operator of EPS;
The roaming Organization Chart that Fig. 3 provides IP operation for local break-out and the access zone network operator of EPS;
Fig. 4 is the route flow chart of the strategy charging control information under the roaming scence of the present invention;
Fig. 5 is the flow chart of the embodiment of the invention one;
Fig. 6 is the flow chart of the embodiment of the invention two;
Fig. 7 is the flow chart of the embodiment of the invention three;
Fig. 8 is the flow chart of the embodiment of the invention four.
Embodiment
With reference to Fig. 4, the method for routing of the strategy charging control information under a kind of roaming scence may further comprise the steps:
Step 401: visit ground DRA inquires about the record of corresponding session according to the request message of visit ground network element, if selected the visit ground PCRF for this conversational services, then directly enters step 403, otherwise, enter step 402;
Step 402: visit ground DRA selects visit ground PCRF, and preserves the corresponding relation of visit ground PCRF and this session;
Step 403: the address that visit ground DRA will visit ground PCRF returns to visit ground network element;
Step 404: visit earth mat unit sends this request message according to this address to visit ground PCRF;
Step 405: visit ground PCRF inquires about the record of corresponding session according to this request message, if selected to be then directly to enter step 410 by the ownership place PCRF of this conversational services, otherwise, enter step 406;
Step 406: visit ground PCRF transmits this request message to ownership place DRA;
Step 407: ownership place DRA inquires about the record of this session according to this request message, if selected to be the ownership place PCRF of this conversational services, then enters step 409, otherwise, enter step 408;
Step 408: ownership place DRA selects ownership place PCRF, and preserves the corresponding relation of ownership place PCRF and this session;
Step 409: ownership place DRA returns the address of ownership place PCRF, and visit ground PCRF preserves the corresponding relation of ownership place PCRF and this session;
Step 410: visit ground PCRF sends this request message to ownership place PCRF;
Step 411: ownership place PCRF generates corresponding strategy, and returns the affirmation message of carrying corresponding strategy by visit ground PCRF to visit ground network element.
There are three kinds of roaming frameworks in EPS, and first kind is called the local route, and as shown in Figure 1, P-GW is at home network, and provides IP operation (being that AF is at home network) by home network operator; Second kind is called local break-out and home network operator provides IP operation, and as shown in Figure 2, P-GW is at visited network, and provides IP operation (being that AF is at home network) by home network operator; The third local break-out and access zone network operator provide IP operation, and as shown in Figure 3, P-GW is at visited network, and provide IP operation (being that AF is at visited network) by visited network operator.Be example with these 3 kinds roaming frameworks below, the present invention is further illustrated in conjunction with Fig. 5, Fig. 6 and Fig. 7 respectively.
Embodiment one
What present embodiment was described is the roaming framework that UE adopts the local route, insert or during from E-UTRAN from the non-3GPP network insertion of trusted or from trustless non-3GPP network insertion 3GPP system, set up in first IP-CAN conversation procedure, P-GW selects the flow process of PCRF, the non-3GPP network access gateway of S-GW or trusted finds the flow process of the selected PCRF of P-GW and when UE initiates service request based on this IP-CAN session, triggering provides this professional AF to provide application/business information to PCRF, and AF finds the flow process of the selected PCRF of P-GW.As shown in Figure 5, each step is described below:
Step 501:P-GW sends " indication is set up in the IP-CAN session " request message, and P-GW is in the home network of UE, so this message is routed to ownership place DRA (hDRA), carries the APN of NAI, IP address and its PDN that will insert of UE in the message;
Step 502:hDRA searches preservation information according to NAI, IP address and APN, do not find the record of this IP-CAN session, therefore hDRA is that P-GW selects an ownership place PCRF (hPCRF), and the redirect message that will carry the hPCRF address returns to P-GW, set up corresponding relation (NAI simultaneously, the IP address, APN, hPCRF address);
Step 503:P-GW sends " indication is set up in the IP-CAN session " request message to hPCRF, and hPCRF generates the PCC strategy according to the CAMEL-Subscription-Information of UE, network strategy etc., and (NAI, IP address APN) identify this IP-CAN session with tuple;
Step 504:hPCRF returns " the IP-CAN session is set up and confirmed " message to P-GW, issues the PCC strategy, and P-GW installs the PCC strategy;
The non-3GPP network access gateway of step 505:S-GW or trusted sends " gateway control session is set up indication " request message, carry NAI, IP address and the APN of UE in the message, the non-3GPP network access gateway of S-GW or trusted is positioned at the access zone network of UE, and this message is sent to visit ground DRA (vDRA);
Step 506:vDRA searches preservation information according to NAI, IP address and APN, do not find the record of this IP-CAN session, therefore vDRA is that the non-3GPP network access gateway of S-GW or trusted is selected a visit ground PCRF (vPCRF), and the redirect message that will carry the vPCRF address returns to S-GW or the non-3GPP network access gateway of trusted, set up corresponding relation (NAI simultaneously, the IP address, APN, vPCRF address);
Step 507:S-GW or trusted non-3 GPP access network close to vPCRF and send " gateway control session is set up indication " request message, carry NAI, IP address and APN in the message, vPCRF searches preservation information according to NAI, IP address and APN, do not find the record of this IP-CAN session, therefore set up record for it, and with tuple (NAI, the IP address, APN) sign;
Step 508:vPCRF transmits " gateway control session is set up indication " request message according to NAI to hDRA;
Step 509:hDRA searches preservation information according to NAI, IP address and APN, finds to have selected hPCRF for this IP-CAN session, and the address of hPCRF is returned to vPCRF, and vPCRF preserves corresponding relation (NAI, IP address, APN, hPCRF address);
Step 510:vPCRF sends " gateway control session is set up indication " request message to hPCRF;
Step 511:hPCRF searches preservation information according to NAI, IP address and APN, this IP-CAN session exists, this gateway control session is associated with this IP-CAN session, and generate qos policy according to the CAMEL-Subscription-Information of UE, network strategy etc., return to vPCRF by " gateway control session is set up and confirmed " message;
Step 512:vPCRF makes amendment to qos policy according to local policy, is transmitted to S-GW or the non-3GPP network access gateway of trusted by acknowledge message again;
Step 513:AF sends " application/business information " request message, carries IP address and APN in the message, and AF is positioned at the belonging area network of UE, and this message is sent to hDRA;
Step 514:hDRA searches discovery for this IP-CAN has selected hPCRF according to IP address and APN, returns to AF so will carry the redirect message of hPCRF address;
Step 515:AF sends " application/business information " request message to hPCRF, carries IP address and APN in the message;
Step 516:hPCRF generates PCC strategy and qos policy and returns acknowledge message with distributing policy to AF.
In the above-mentioned flow process, step 501-step 504 is selected the flow process of PCRF for P-GW; Step 505-step 512 is the flow process that S-GW or the non-3GPP network access gateway of trusted find the selected PCRF of P-GW, and by trustless non-3GPP network insertion, then step 505-step 512 need not to carry out as if UE; Step 513-step 516 finds the flow process of the selected PCRF of P-GW for AF.
Embodiment two
What present embodiment was described is that UE adopts local break-out and home network operator that the roaming framework of IP operation is provided, insert or during from E-UTRAN from the non-3GPP network insertion of trusted or from trustless non-3GPP network insertion 3GPP system, set up in first IP-CAN conversation procedure, P-GW selects the flow process of PCRF, the non-3GPP network access gateway of S-GW or trusted finds the flow process of the selected PCRF of P-GW and when UE initiates service request based on this IP-CAN session, triggering provides this professional AF to provide application/business information to PCRF, and AF finds the flow process of the selected PCRF of P-GW.As shown in Figure 6, each step is described below:
Step 601:P-GW sends " indication is set up in the IP-CAN session " request message, and P-GW is in the access zone network of UE, so this message is routed to vDRA, carries NAI in the message, IP address and APN;
Step 602:vDRA searches preservation information according to NAI, IP address and APN, do not find the record of this IP-CAN session, therefore vDRA is that P-GW selects a vPCRF, and the redirect message that will carry the vPCRF address returns to P-GW, set up corresponding relation (NAI simultaneously, the IP address, APN, vPCRF address);
Step 603:P-GW sends " indication is set up in the IP-CAN session " request message to vPCRF, carry NAI, IP address and APN in the message, vPCRF searches preservation information according to NAI, IP address and APN, do not find the record of this IP-CAN session, therefore set up record for it, and with tuple (NAI, the IP address, APN) sign;
Step 604:vPCRF transmits " gateway control session is set up indication " request message according to NAI to hDRA;
Step 605:hDRA searches preservation information according to NAI, IP address and APN, do not find the record of this IP-CAN session, therefore hDRA is that P-GW selects a hPCRF, and the redirect message that will carry the hPCRF address returns to vPCRF, in hDRA, set up simultaneously corresponding relation (NAI, the IP address, APN, hPCRF address); After vPCRF receives return messages, set up corresponding relation (NAI, IP address, APN, hPCRF address);
Step 606:vPCRF sends " indication is set up in the IP-CAN session " request message to hPCRF;
Step 607:hPCRF generates the PCC strategy according to user's CAMEL-Subscription-Information, network strategy etc., and (NAI, IP address APN) identify this IP-CAN session, and hPCRF returns " affirmation is set up in the IP-CAN session " message to issue the PCC strategy to vPCRF with tuple;
Step 608:vPCRF transmits to P-GW by acknowledge message after according to local policy the PCC strategy being made amendment;
The non-3GPP network access gateway of step 609:S-GW or trusted sends " gateway control session is set up indication " request message, carry NAI, IP address and APN in the message, the non-3GPP network access gateway of S-GW or trusted is in the access zone network of UE, and this message is sent to vDRA;
Step 610:vDRA is according to NAI, and IP address and APN search preservation information, finds to return to S-GW or the non-3GPP network access gateway of trusted for this IP-CAN has selected vPCRF so will carry the redirect message of vPCRF address;
The non-3GPP network access gateway of step 611:S-GW or trusted sends " gateway control session is set up indication " request message to vPCRF, carries NAI, IP address and APN in the message;
Step 612:vPCRF searches record according to NAI, IP address and APN, finds for this IP-CAN has selected hPCRF, thereby this message is sent to selected hPCRF;
Step 613:hPCRF generates qos policy according to user's CAMEL-Subscription-Information, network strategy etc., returns " gateway control session is set up and the confirmed " message that comprises qos policy to vPCRF;
After step 614:vPCRF makes amendment to qos policy according to local policy, acknowledge message is transmitted to S-GW or the non-3GPP network access gateway of trusted;
Step 615:AF sends " application/business information " request message, carries IP address and APN in the message, and AF is positioned at the home network of UE, so this message is sent to hDRA;
Step 616:hDRA searches preservation information according to IP address and APN, finds to return to AF for this IP-CAN has selected hPCRF so will carry the redirect message of hPCRF address;
Step 617:AF sends " application/business information " request message to hPCRF, carries IP address and APN in the message;
Step 618:hPCRF obtains business information with generation PCC strategy and qos policy, and returns acknowledge message with distributing policy to AF.
In the above-mentioned flow process, step 601-step 608 is selected the flow process of PCRF for P-GW; Step 609-step 614 finds the flow process of the selected PCRF of P-GW for S-GW or the non-3GPP network access gateway of trusted, if UE is during by trustless non-3GPP network insertion, step 609-step 614 need not execution; Step 615-step 618 finds the flow process of the selected PCRF of P-GW for AF.
Embodiment three
What present embodiment was described is that UE adopts local break-out and access zone network operator that the roaming framework of IP operation is provided, insert or during from E-UTRAN from the non-3GPP network insertion of trusted or from trustless non-3GPP network insertion 3GPP system, in the process of setting up first IP-CAN session, P-GW selects the flow process of PCRF, the non-3GPP network access gateway of S-GW or trusted finds the flow process of the selected PCRF of P-GW and when UE initiates service request based on this IP-CAN session, triggering provides this professional AF to provide application/business information to PCRF, and AF finds the flow process of the selected PCRF of P-GW.As shown in Figure 7, each step is described below:
Step 701-step 714: identical with step 601-step 614, repeat no more herein;
Step 715:AF sends " application/business information " request message, carries IP address and APN in the message, and AF is positioned at the access zone network of UE, so this message is sent to vDRA;
Step 716:vDRA searches preservation information according to IP address and APN, finds to have selected vPCRF for this IP-CAN session, returns to AF so will carry the redirect message of vPCRF address;
Step 717:AF sends " application/business information " request message to vPCRF, carries IP address and APN in the message;
Step 718:vPCRF searches preservation information according to IP address and APN, finds to have selected hPCRF for this IP-CAN session, thereby this forwards is arrived selected hPCRF;
Step 719:hPCRF obtains this business information to generate PCC strategy and qos policy and to return acknowledge message with distributing policy to vPCRF;
Step 720:vPCRF transmits to AF by acknowledge message after according to local policy the strategy that issues being made amendment.
In the above-mentioned flow process, step 701-step 708 is selected the flow process of PCRF for P-GW; Step 709-step 714 finds the flow process of the selected PCRF of P-GW for S-GW or the non-3GPP network access gateway of trusted, if UE is during by trustless non-3GPP network insertion, step 709-step 714 need not execution; Step 715-step 720 finds the flow process of the selected PCRF of P-GW for AF.
Embodiment four
What present embodiment was described is that UE adopts local break-out and access zone network operator that the roaming framework of IP operation is provided, insert when switching to from E-UTRAN from non-3GPP network of trusted or trustless non-3GPP network insertion 3GPP system, rebuild in the process of IP-CAN session, the non-3GPP network access gateway of trusted finds the flow process of the selected PCRF of origin system, when P-GW finds the flow process of the selected PCRF of origin system and UE to initiate service request based on this IP-CAN session, triggering provides this professional AF to provide application/business information to PCRF, and AF finds the flow process of the selected PCRF of origin system.As shown in Figure 8, suppose that S-GW has selected vPCRF1 by vDRA1, and selected hPCRF by hDAR that UE finds non-3 GPP system and decision initiation switching flow, each step is described below:
Step 801: the IAD of the non-3GPP network of trusted sends " gateway control and qos policy rule " request message, carry NAI, IP address and APN in the message, the non-3GPP network access gateway of trusted is in the access zone network of UE, and it is different with the residing Diameter of S-GW (PCRF) territory, the non-3GPP network access gateway of trusted territory of living in is managed by vDRA2, so this message is sent to vDRA2;
Step 802:vDRA2 searches preservation information according to NAI, IP address and APN, do not find the record of this IP-CAN session, therefore vDRA2 is that the non-3GPP network access gateway of trusted is selected vPCRF2, and the redirect message that will carry the vPCRF2 address returns to the non-3GPP network access gateway of trusted, and set up corresponding relation (NAI, the IP address, APN, vPCRF2 address);
Step 803: the non-3GPP network access gateway of trusted sends " gateway control and qos policy rule " request message to vPCRF2, carry NAI, IP address and APN in the message, vPCRF2 searches preservation information according to NAI, IP address and APN, do not find the record of this IP-CAN session, therefore set up record for it, and with tuple (NAI, the IP address, APN) sign;
Step 804:vPCRF2 transmits " gateway control and qos policy rule " request message according to NAI to hDRA;
Step 805:hDRA searches preservation information according to NAI, IP address and APN, finds the record of this IP-CAN session, and the hPCRF address is returned to vPCRF2;
Step 806:vPCRF2 sets up corresponding relation (NAI, IP address, APN, hPCRF address) for this IP-CAN session, and sends " gateway control and qos policy rule " request message to hPCRF;
Step 807:hPCRF generates qos policy according to user's CAMEL-Subscription-Information, network strategy etc., returns " gateway control session is set up and confirmed " message to the non-3GPP network access gateway of trusted, issues qos policy;
Step 808:vPCRF2 is transmitted to the non-3GPP network access gateway of trusted after according to local policy qos policy being made amendment;
Step 809: after the switching, P-GW does not change, so P-GW sends " IP-CAN session modification " request message to vPCRF1, carries NAI, IP address and APN in the message;
Step 810:vPCRF1 transmits message according to the record that NAI, IP address and APN find this IP-CAN session to hPCRF;
Step 811:PCRF revises the PCC strategy according to user's CAMEL-Subscription-Information, network strategy and IP-CAN conversation type, and hPCRF returns " affirmation of IP-CAN session modification " message to vPCRF1, issues amended PCC strategy;
After step 812:vPCRF1 makes amendment to the PCC strategy according to local policy, transmit acknowledge message to P-GW;
Step 813: after the switching, AF does not change, so AF sends " application/business information " request message to vPCRF1, carries IP address and APN in the message;
Step 814:vPCRF1 transmits this message according to the IP-CAN conversation recording that IP address and APN find preservation to hPCRF;
Step 815:hPCRF obtains this business information to generate PCC strategy and qos policy and to return acknowledge message with distributing policy to vPCRF1;
Step 816:vPCRF1 transmits to AF by acknowledge message after according to local policy the strategy that issues being made amendment.
In the above-mentioned flow process, step 801-step 808 finds the flow process of the selected PCRF of origin system for the non-3GPP network access gateway of trusted, if when UE switches to from trustless non-3GPP network insertion, step 801-step 808 need not to carry out; Step 809-step 812 finds the flow process of the selected PCRF of origin system for P-GW; Step 813-step 816 finds the flow process of the selected PCRF of origin system for AF.
Claims (10)
1. the method for routing of the strategy charging control information under the roaming scence is characterized in that, may further comprise the steps:
A, visit earth mat unit send a request message to described visit ground policy billing control server according to the address of the visit ground policy billing control server that visit ground Diameter route agent (DRA) returns;
B, described visit ground policy billing control server is according to the record of the corresponding session of described request information query, and after determining the ownership place policy billing control server according to Query Result, described request message is sent to described ownership place policy billing control server.
2. the method for routing of the strategy charging control information under the roaming scence as claimed in claim 1 is characterized in that, described step a specifically realizes by following steps:
A1, described visit ground DRA inquire about the record of corresponding session according to the request message of described visit ground network element, if selected the visit ground policy billing control server for described conversational services, then directly enter step a3, otherwise, enter step a2;
A2, described visit ground DRA select visit ground policy billing control server, and preserve the corresponding relation of described visit ground policy billing control server and described session;
A3, described visit ground DRA return to described visit ground network element with the address of described visit ground policy billing control server;
A4, described visit earth mat unit send described request message according to described address to described visit ground policy billing control server.
3. the method for routing of the strategy charging control information under the roaming scence as claimed in claim 2 is characterized in that, described step b specifically realizes by following steps:
B1, described visit ground policy billing control server are inquired about the record of corresponding session according to described request message, if selected to be the ownership place policy billing control server of described conversational services, then directly enter step b3, otherwise, step b2 entered;
B2, described visit ground policy billing control server are transmitted described request message to ownership place DRA, described ownership place DRA returns the address of the ownership place policy billing control server of selection according to described request message, and described visit ground policy billing control server is preserved the corresponding relation of described ownership place policy billing control server and described session;
B3, described visit ground policy billing control server send described request message to described ownership place policy billing control server.
4. the method for routing of the strategy charging control information under the roaming scence as claimed in claim 3 is characterized in that, described step b2 further realizes by following steps:
B21, described visit ground policy billing control server are transmitted described request message to described ownership place DRA;
B22, described ownership place DRA inquire about the record of described session according to described request message, if selected to be then directly to enter step b24 by the ownership place policy billing control server of described conversational services, otherwise, enter step b23;
B23, described ownership place DRA select the ownership place policy billing control server, and preserve the corresponding relation of described ownership place policy billing control server and described session;
B24, described ownership place DRA return the address of ownership place policy billing control server, and described visit ground policy billing control server is preserved the corresponding relation of described ownership place policy billing control server and described session.
5. the method for routing of the strategy charging control information under the roaming scence as claimed in claim 4, it is characterized in that: described ownership place policy billing control server generates and issues corresponding strategy after receiving described request message, when issuing corresponding strategy, at first it is handed down to visit ground policy billing control server, is handed down to described visit ground network element again after described visit ground policy billing control server is made amendment to it according to local policy.
6. the method for routing of the strategy charging control information under the roaming scence as claimed in claim 5, it is characterized in that the attribute of the corresponding relation that described visit ground DRA preserves comprises: the address of the sign of the Packet Data Network that roamer's sign, described roamer's address, described roamer will insert and described visit ground policy billing control server; The attribute of the corresponding relation that described ownership place DRA preserves comprises the sign of the Packet Data Network that described roamer's sign, described roamer's address, described roamer will insert and the address of described ownership place policy billing control server; The attribute of the corresponding relation that described visit ground policy billing control server is preserved comprises: the sign of the Packet Data Network that described roamer's sign, described roamer's address, described roamer will insert and the address of described ownership place policy billing control server.
7. the method for routing of the strategy charging control information under the roaming scence as claimed in claim 6, it is characterized in that: when described visit ground network element is grouped data network gateway, described request message comprises described roamer's sign, described roamer's address and the sign of the Packet Data Network that will insert, after described ownership place policy billing control server receives described request message, generation strategy charging control strategy.
8. the method for routing of the strategy charging control information under the roaming scence as claimed in claim 6, it is characterized in that: when described visit ground network element is gateway or the non-third generation partner program of trusted network access gateway, described request message comprises described roamer's sign, described roamer's address and the sign of the Packet Data Network that will insert, after described ownership place policy billing control server receives described request message, generate quality of service policy.
9. the method for routing of the strategy charging control information under the roaming scence as claimed in claim 6, it is characterized in that: described visit ground network element is when providing professional application function to described roamer, described request message comprises described roamer's address and the sign of the Packet Data Network that will insert, after described ownership place policy billing control server receives described request message, according to business information generation strategy charging control strategy and quality of service policy wherein.
10. as the method for routing of the strategy charging control information under one of them described roaming scence of claim 7 to 9, it is characterized in that: described roamer is designated network access Identifier; The network insertion that is designated of the described Packet Data Network that will insert is called the roll.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
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| CN200710186139XA CN101198171B (en) | 2007-12-27 | 2007-12-27 | Routing method for strategy charging control information in roaming scene |
| PCT/CN2008/073276 WO2009086759A1 (en) | 2007-12-27 | 2008-12-01 | Method for selecting policy and charging rules function |
| US12/811,075 US8326263B2 (en) | 2007-12-27 | 2008-12-01 | Method for selecting policy and charging rules function |
| ES08869485.6T ES2553191T3 (en) | 2007-12-27 | 2008-12-01 | Procedure for selecting a billing policy and rule function |
| EP08869485.6A EP2234422B1 (en) | 2007-12-27 | 2008-12-01 | Method for selecting policy and charging rules function |
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| CN200710186139XA CN101198171B (en) | 2007-12-27 | 2007-12-27 | Routing method for strategy charging control information in roaming scene |
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