CN101277541B - Method for forwarding message of Diameter route entity - Google Patents
Method for forwarding message of Diameter route entity Download PDFInfo
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- CN101277541B CN101277541B CN2008101001148A CN200810100114A CN101277541B CN 101277541 B CN101277541 B CN 101277541B CN 2008101001148 A CN2008101001148 A CN 2008101001148A CN 200810100114 A CN200810100114 A CN 200810100114A CN 101277541 B CN101277541 B CN 101277541B
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Abstract
The present invention provides a method of Diameter route entity relaying messages, including: the Diameter route entity supporting part strategy and accounting rule function domain applied in the access point name, receives a gateway control session establishment information transmitted by the gateway, if carrying with a switching mark, the information is transmitted to the Diameter route entity supporting part strategy and accounting rule function domain applied in the access point name, and the Diameter route entity queries strategies and accounting rule function for distributing the IP communication access network session, finally, the gateway control session establishment information is transmitted to the strategies and the accounting rule function. After the user uses S2c access to switch to 3GPP access or a credible non-3GPP S2a access, the technical solution of the invention realizes that the information corresponding to the IP communication access network session is transmitted to the same strategy and accounting rule function.
Description
Technical field
The present invention relates to the communications field, relate in particular to the method that a kind of Diameter route entity is transmitted message.
Background technology
Grouping system (the EPS of 3GPP evolution; The grouping system of Evolved Packet System evolution) by the UTRAN (E-UTRAN of evolution; The land wireless universal access network of Evolved Universal Terrestrial Radio Access Network evolution), MME (mobile management unit, Mobility Management Entity), S-GW (gateway, Serving Gateway), PDN GW (P-GW; Packet Data Network Gate Way; 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 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.S2c is the interface between UE and the P-GW, adopts the DSMIPv6 agreement that control and mobile management are provided.MIPv6 (Moblie IPv6) is through supporting MN accessibility and continuity of session when mobile in network to the IPv6 Care-of Address CoA of mobile node MN (Mobile Node) and the binding of IPv6 home address HoA.
In traditional 3GPP network; Strategy and charge execution function (PCEF; Policy and charging enforcement function) exist only among the P-GW, PCRF needs only the control that can accomplish all functions with the P-GW interface, passes through Gx interface (see figure 1) exchange message between PCRF and P-GW.But when the user uses 3GPP to insert, and the interface between P-GW and S-GW walks PMIP (Proxy Mobile IP agreement) based on the S5 interface, and the policy enforcement function part in the PCEF function also is present in S-GW; Or when the user used non-3GPP trusty to insert, the policy enforcement function part in the PCEF function also was present in the non-3 GPP access network trusty Central Shanxi Plain.The entity that resides in these gateways is called as bearing binding and reporting events functional entity (BBERF, Bearer Binding and Event Reporting Function).When the user uses 3GPP to insert, pass through Gxc interface exchange message between S-GW and the PCRF; When user non-3GPP trusty inserted, the trusted non-3 GPP access network closed through S2a and PCRF interactive information (like Fig. 1).Diameter route entity DRA (Diameter Routing Agent) is in charge of a PCRF territory; When UE initiates an IP-CAN (IP is communicated with access network) when session is set up; Is that a PCRF is selected in this IP-CAN session by DRA according to certain selection principle (like the load balancing principle), guarantees that so the relevant message of all these IP-CAN sessions sends to same PCRF and goes up (as shown in Figure 2).DRA can adopt Redirection (being redirected) and Proxy (agency) mode administration PC RF territory in the network at present.Adopt Redirection mode (as shown in Figure 3): gateway (comprises P-GW; S-GW, non-3 GPP access network trusty closes) or AF send a request message to DRA, DRA is according to certain selection strategy; Select PCRF for this IP-CAN session, this PCRF address is returned to gateway; After gateway is received the redirect message from DRA, the PCRF address of carrying in the message body as destination address, is sent a request message to this PCRF.Adopt Proxy mode (as shown in Figure 4): gateway (comprise P-GW, S-GW, non-3 GPP access network trusty closes) send a request message to DRA; DRA is according to certain selection strategy; Be this IP-CAN session selection PCRF, and forwards arrived this PCRF that PCRF has formulated PCC (strategy is controlled with charging) strategy for this IP-CAN session; The PCC strategy is sent to DRA, send to gateway by DRA.
When having a plurality of PCRF territory in the network, and gateway (comprise P-GW, S-GW, non-3 GPP access network trusty closes) select the PCRF territory according to APN (Access Point Name APN).When the user uses S2c to insert, initiate gateway control session by non-3GPP gateway trusty to PCRF and set up request, owing to possibly have a plurality of PCRF territory in the network, so non-3GPP gateway trusty need be selected the PCRF territory according to APN.But this moment, non-3GPP gateway trusty had no APN information, so can't select the PCRF territory according to APN owing to used the S2c access.Dispose a PCRF territory this moment, and the PCRF in this territory should be able to support all APN, when gateway (comprises P-GW; S-GW; Non-3 GPP access network trusty closes) learn when adopting S2c to insert, not to select the PCRF territory, but directly send a message in the PCRF territory of this configuration according to APN; For the IP-CAN session distributes PCRF, guarantee that all relevant message of this IP-CAN session send on the same PCRF by the DRA in the configuration domain.In user's moving process, when switching to the 3GPP access, switch to the S-GW in the 3GPP network by non-3 GPP access network trusty pass.S-GW has APN information at this moment; S-GW still can be according to APN Information Selection PCRF territory; But the user does not adopt S2c to insert before not knowing to switch; But this moment, the PCRF territory according to APN the PCRF territory of selecting and the preceding static configuration of using that switches was different, just can't guarantee that the relevant message of an IP-CAN session all sends to same PCRF and gone up.
Summary of the invention
The technical problem that the present invention will solve provides the method that a kind of Diameter route entity is transmitted message; After the user uses the S2c access to switch to 3GPP access or non-3GPP S2a access trusty, can realize that the message that an IP-CAN session is relevant all sends on the same PCRF.
In order to address the above problem; The invention provides a kind of Diameter route entity and transmit the method for message; Comprise: after the Diameter route entity that support sector is tapped into the "Policy and Charging Rules Function territory that a some title uses receives that gateway control session that gateway is sent is set up message; Switch sign if wherein carry; Then said forwards is given the Diameter route entity in the "Policy and Charging Rules Function territory of supporting that all APNs are used; And the Diameter route entity in the "Policy and Charging Rules Function territory of being used by all APNs of said support inquires to IP is communicated with the "Policy and Charging Rules Function that access to network conversation distributes, and the most said gateway control session is set up message and sent to said "Policy and Charging Rules Function.
Further; When the user uses S2c to insert to switch to after 3GPP inserts or non-3GPPS2a trusty inserts, the Diameter route entity that the gateway after the switching is tapped into the "Policy and Charging Rules Function territory that a title uses to support sector sends to carry when gateway control session is set up message and switches sign.
Further, said gateway refers to that gateway or non-3 GPP access network trusty close.
Further; After the Diameter route entity that said support sector is tapped into the "Policy and Charging Rules Function territory that a some title uses receives that gateway control session that said gateway is sent is set up message; The local relevant information that whether has said IP to be communicated with access to network conversation of inquiry; If do not have, judge then said gateway control session sets up whether carry the switching sign in the message, if; Then said gateway control session is set up the Diameter route entity that forwards is given the "Policy and Charging Rules Function territory of all APNs application of support of disposing, set up failure otherwise return session to said gateway.
Further; The Diameter route entity in the "Policy and Charging Rules Function territory that all APNs of said support are used is received after said gateway control session is set up message and is inquired about this locality; If find said IP to be communicated with the relevant information of access to network conversation; Then be tapped into a Diameter route entity in the "Policy and Charging Rules Function territory of title application and return redirect response to said support sector; Wherein carry the address that is communicated with the "Policy and Charging Rules Function of access to network conversation distribution into said IP; Said support sector is tapped into a Diameter route entity in the "Policy and Charging Rules Function territory of title application said redirect response is transmitted to said gateway, and gateway is set up strategy and charging control strategy alternately through said address and "Policy and Charging Rules Function, finally accomplishes session and sets up.
Further; The Diameter route entity in the "Policy and Charging Rules Function territory that all APNs of said support are used is received after said gateway control session is set up message and is inquired about this locality; If find this IP to be communicated with the relevant information of access to network conversation; Then said gateway control session is set up forwards and give the "Policy and Charging Rules Function that is communicated with the access to network conversation distribution for said IP; Said "Policy and Charging Rules Function is generated strategy and is chargeed control strategy; And a Diameter route entity that is tapped into the "Policy and Charging Rules Function territory that a title uses through Diameter route entity, the support sector that supports the "Policy and Charging Rules Function territory that all APNs are used successively is transmitted to said gateway with it, finally accomplishes session and sets up.
Further; The Diameter route entity inquiry in the "Policy and Charging Rules Function territory that all APNs of said support are used is local; If do not find said IP to be communicated with the relevant information of access to network conversation, a Diameter route entity that then is tapped into the "Policy and Charging Rules Function territory that a title uses through support sector returns session to said gateway and sets up failure.
Further; The Diameter route entity inquiry in the "Policy and Charging Rules Function territory that all APNs of said support are used is local; If do not find said IP to be communicated with the relevant information of access to network conversation, a Diameter route entity that then is tapped into the "Policy and Charging Rules Function territory that a title uses through Diameter route entity, the support sector that supports the "Policy and Charging Rules Function territory that all APNs are used successively returns session to said gateway and sets up failure.
In sum; The present invention provides a kind of Diameter route entity to transmit the method for message; After the user uses the S2c access to switch to 3GPP access or non-3GPP S2a access trusty; After if gateway is set up gateway control session message and is sent to the DRA that selects through APN; This DRA can set up the DRA of forwards to the PCRF territory that all APN of support use with gateway control session according to the sign of the switching in the message, supports the DRA in the PCRF territory that all APN use that forwards is arrived the PCRF that distributes for this IP-CAN session through this again, thereby has realized that the message that an IP-CAN session is relevant all sends on the same PCRF.
Description of drawings
Fig. 1 is that UE adopts the non-roaming Organization Chart that 3GPP inserts and non-3GPP inserts;
Fig. 2 is a DRA administration PC RF territory Organization Chart;
Fig. 3 is the flow chart of DRA as Redirect Server administration PC RF territory;
Fig. 4 is the flow chart of DRA as acting server administration PC RF territory;
Fig. 5 is the Organization Chart that a plurality of PCRF territory is arranged in the network;
Fig. 6 is the flow chart that DRA transmits message among the embodiment one;
Fig. 7 is the flow chart that DRA transmits message among the embodiment two.
Embodiment
The present invention provides a kind of Diameter route entity to transmit the method for message; After the user uses the S2c access to switch to 3GPP access or non-3GPP S2a access trusty; Gateway sends to carry when gateway control session is set up message to DRA and switches sign; DRA sets up the DRA that can support the PCRF territory that all APN use that forwards is given configuration according to switching sign with gateway control session; Find out the PCRF that distributes into the IP-CAN session by this DRA again, thereby can all message of this IP-CAN session be sent to one PCRF.
Further describe in detail below in conjunction with the method for accompanying drawing invention.
Embodiment one
What present embodiment was described is to insert under the non-roaming scene when UE is in S2c, and the employing of 3GPP core net is the EPC framework.DRA adopts Redirection (being redirected) mode administration PC RF in the network.UE switches in moving process, switches to 3GPP access or non-3GPP S2a access trusty.The flow chart of present embodiment is as shown in Figure 6, and each step is described below:
Step 601, S-GW or non-3 GPP access network trusty close according to APN selects the PCRF territory; Gateway control session is set up message send to the DRA in this territory; Have in the message and switch sign; The PCRF territory of selecting can be PCRF territory 1, can be PCRF territory 3 also, and what hypothesis was selected in this example is PCRF territory 1.
Step 602, DRA1 inquire about local; Do not find the relevant information of this IP-CAN session; And the gateway control session of receiving is set up to have in the message and is switched sign, with the DRA of forwards to the PCRF territory of all APN application of support of configuration, i.e. DRA2 in the PCRF territory 2 among Fig. 5.
Step 603, DRA2 receive that inquiry is local after the message, search the relevant information that whether has this IP-CAN session, are execution in step 604 then, otherwise execution in step 607;
Step 604, DRA2 return redirect response to DRA1, wherein carry the PCRF address of distributing into this IP-CAN session;
Step 605, DRA1 are transmitted to gateway with redirect response.
After step 606, gateway are received redirect response, set up the PCC strategy alternately, finally accomplish session and set up through PCRF address and this PCRF.
Step 607, DRA2 return session to DRA1 and set up failure.
Step 608, DRA1 set up failed message with session and are transmitted to gateway.
For roaming scence, same being suitable for.
Embodiment two
What present embodiment was described is to insert under the non-roaming scene when UE is in S2c, and the employing of 3GPP core net is the EPC framework.DRA adopts Proxy (relaying) mode administration PC RF in the network.UE switches in moving process, switches to 3GPP access or non-3GPP S2a access trusty.The flow chart of present embodiment is as shown in Figure 7, and each step is described below:
Step 701, S-GW or non-3 GPP access network trusty close; Select the PCRF territory according to APN; Gateway control session is set up message send to the DRA in this territory, have in the message and switch sign, the PCRF territory of selection can be PCRF territory 1; Can be PCRF territory 3 also, what hypothesis was selected in this example be PCRF territory 1.
Step 702, DRA1 inquire about local; Do not find the relevant information of this IP-CAN session; And the gateway control session of receiving is set up to have in the message and is switched sign, with the DRA of forwards to the PCRF territory of all APN application of support of configuration, i.e. DRA2 in the PCRF territory 2 among Fig. 5.
Step 703, DRA2 receive that inquiry is local after the message, search the relevant information that whether has this IP-CAN session, are execution in step 704 then, otherwise execution in step 706;
Step 704, DRA2 set up forwards with gateway control session and give the PCRF that distributes for this IP-CAN session.
Step 705, PCRF formulate the PCC strategy, and the PCC strategy is sent to DRA2, and DRA2 is transmitted to DRA1 with the PCC strategy, and DRA1 is transmitted to gateway with the PCC strategy again, finally accomplish session and set up.
Step 706, DRA2 return session to DRA1 and set up failure.
Step 707, DRA1 set up failure with session and are transmitted to gateway.
For roaming scence, same being suitable for.
Claims (8)
1. a Diameter route entity is transmitted the method for message; It is characterized in that: after the Diameter route entity that support sector is tapped into the "Policy and Charging Rules Function territory that a some title uses receives that gateway control session that gateway is sent is set up message; Switch sign if wherein carry; Then said forwards is given the Diameter route entity in the "Policy and Charging Rules Function territory of supporting that all APNs are used; And the Diameter route entity in the "Policy and Charging Rules Function territory of being used by all APNs of said support inquires to IP is communicated with the "Policy and Charging Rules Function that access to network conversation distributes, and the most said gateway control session is set up message and sent to said "Policy and Charging Rules Function.
2. the method for claim 1 is characterized in that:
When the user uses S2c to insert to switch to after 3GPP inserts or non-3GPP S2a trusty inserts, the Diameter route entity that the gateway after the switching is tapped into the "Policy and Charging Rules Function territory that a title uses to said support sector sends to carry when gateway control session is set up message and switches sign.
3. according to claim 1 or claim 2 method is characterized in that:
Said gateway refers to that gateway or non-3 GPP access network trusty close.
4. the method for claim 1 is characterized in that:
After the Diameter route entity that said support sector is tapped into the "Policy and Charging Rules Function territory that a some title uses receives that gateway control session that said gateway is sent is set up message; The local relevant information that whether has said IP to be communicated with access to network conversation of inquiry; If do not have; Judge then said gateway control session sets up whether carry the switching sign in the message; If, then said gateway control session is set up the Diameter route entity that forwards is given the "Policy and Charging Rules Function territory of all APNs application of support of disposing, set up failure otherwise return session to said gateway.
5. like claim 1 or 4 described methods, it is characterized in that:
The Diameter route entity in the "Policy and Charging Rules Function territory that all APNs of said support are used is received after said gateway control session is set up message and is inquired about this locality; If find said IP to be communicated with the relevant information of access to network conversation; Then be tapped into a Diameter route entity in the "Policy and Charging Rules Function territory of title application and return redirect response to said support sector; Wherein carry the address that is communicated with the "Policy and Charging Rules Function of access to network conversation distribution into said IP; Said support sector is tapped into a Diameter route entity in the "Policy and Charging Rules Function territory of title application said redirect response is transmitted to said gateway; Gateway is set up strategy and charging control strategy alternately through said address and "Policy and Charging Rules Function, finally accomplishes session and sets up.
6. like claim 1 or 4 described methods, it is characterized in that:
The Diameter route entity in the "Policy and Charging Rules Function territory that all APNs of said support are used is received after said gateway control session is set up message and is inquired about this locality; If find this IP to be communicated with the relevant information of access to network conversation; Then said gateway control session is set up forwards and give the "Policy and Charging Rules Function that is communicated with the access to network conversation distribution for said IP; Said "Policy and Charging Rules Function is generated strategy and is chargeed control strategy; And a Diameter route entity that is tapped into the "Policy and Charging Rules Function territory that a title uses through Diameter route entity, the support sector that supports the "Policy and Charging Rules Function territory that all APNs are used successively is transmitted to said gateway with it, finally accomplishes session and sets up.
7. method as claimed in claim 5 is characterized in that:
The Diameter route entity inquiry in the "Policy and Charging Rules Function territory that all APNs of said support are used is local; If do not find said IP to be communicated with the relevant information of access to network conversation, a Diameter route entity that then is tapped into the "Policy and Charging Rules Function territory that a title uses through support sector returns session to said gateway and sets up failure.
8. method as claimed in claim 6 is characterized in that:
The Diameter route entity inquiry in the "Policy and Charging Rules Function territory that all APNs of said support are used is local; If do not find said IP to be communicated with the relevant information of access to network conversation, a Diameter route entity that then is tapped into the "Policy and Charging Rules Function territory that a title uses through Diameter route entity, the support sector that supports the "Policy and Charging Rules Function territory that all APNs are used successively returns session to said gateway and sets up failure.
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| CN101159563A (en) * | 2007-11-02 | 2008-04-09 | 中兴通讯股份有限公司 | Method and system for selecting strategy charging control server |
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| CN101277541A (en) | 2008-10-01 |
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