CN101355561B - Session information management method and system for DRA - Google Patents

Session information management method and system for DRA Download PDF

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Publication number
CN101355561B
CN101355561B CN200810146792A CN200810146792A CN101355561B CN 101355561 B CN101355561 B CN 101355561B CN 200810146792 A CN200810146792 A CN 200810146792A CN 200810146792 A CN200810146792 A CN 200810146792A CN 101355561 B CN101355561 B CN 101355561B
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session
policy
home network
message
rules function
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CN101355561A (en
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芮通
施晓峰
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a method and a system for managing session messages of a Diameter router agent, wherein the method comprises the following steps that: a Diameter router at the visited locationsends a session ending message received from a strategy charging control terminal to a strategy and charging rule function at the visited place; the strategy and charging rule function at the visited location sends the session ending message to a Diameter router agent in a home network; the Diameter router agent in the home network sends the session ending message to a strategy and charging rule function in the home network; and the Diameter router agent in the home network and the Diameter router agent at the visited location respond respective session ending confirmation message from the strategy and charging rule functions of the networks to delete the session related message stored locally. The adoption of the method and the system ensures that the DRA responds IP-CAN session ending instructions generated by different PCC terminals, and deletes the message which is stored locally and is related to the IP-CAN session, thereby releasing the network resources occupied ineffectively, improving the network processing efficiency and avoiding the situation that the resources are occupied unnecessarily.

Description

The session information management method of DRA and system
Technical field
The present invention relates to communication field, concrete, relate to the session information management method and the system of a kind of Diameter route agent (Diameter Route Agent abbreviates DRA as).
Background technology
Third generation partner program (3rd Generation Partnership Project; Abbreviate 3GPP as) grouping system (the Evolved Packet System of evolution; Abbreviate EPS as) by Universal Terrestrial Radio Access Network (the Evolved Universal Terrestrial RadioAccess Network of evolution; Abbreviate E-UTRAN as), mobile management unit (MobilityManagement Entity abbreviates MME as), gateway (Serving Gateway abbreviates S-GW as), packet data network (Packet Data Network; Abbreviate PDN as) gateway (PDN Gateway; Abbreviate P-GW as), home subscriber server (HomeSubscriber Server abbreviates HSS as), 3GPP authentication and authorization charging server (3GAuthorization Authentication Accounting abbreviates the 3GPP aaa server as); "Policy and Charging Rules Function (Policy and Charging Rules Function abbreviates PCRF as) and other support nodes are formed.The position of above-mentioned each function network element and annexation are variable, and concrete position and annexation can be with reference to figure 1, Fig. 2, and Fig. 3.
Wherein, S-GW is the accessing gateway equipment that EPS links to each other with E-UTRAN, and S-GW 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, is responsible between EPS and PDN, transmitting data etc.;
The Internet protocol that PCRF provides through Rx interface and operator (InternetProtocol abbreviates IP as) business network connects, and obtains IP operation information; On the other hand; PCRF links to each other with gateway device in the network through Gx/Gxa/Gxc interface (this interface is not shown in Fig. 1, Fig. 2, Fig. 3), and PCRF is responsible for initiating the foundation of IP carrying, is service quality (the Quality of Service of business datum; Abbreviate QoS as) give security, and the control of chargeing.
The EPS support is communicated by letter with non-3GPP network.The intercommunication of EPS and non-3GPP network realizes that through the S2a/b/c interface P-GW is then as 3GPP network and the internetwork anchor point of non-3GPP.
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 and can directly be connected with EPS through P-GW by the S2a interface.The IP of trustless non-3GPP network inserts the data gateway (Evolved Packet Data Gateway abbreviates ePDG as) that needs through evolution and is connected with EPS through P-GW by interface S2b.
In the 3GPP network between EPS; Strategy and charge execution function (Policyand charging enforcement function; Abbreviate PCEF as) (not shown in Fig. 1, Fig. 2, Fig. 3) be present among the P-GW; PCRF passes through Gx interface exchange message as long as be connected the control that can accomplish all functions with P-GW between PCRF and P-GW.Interface when between P-GW and S-GW is based on proxy-mobile IP (Proxy Mobile IP; Abbreviate PMIP as) time; There is bearing binding and event reporting function (Bearer Bindingand Event Report Function among the S-GW; Abbreviate BBERF as), pass through Gxc interface exchange message between S-GW and the PCRF.When the non-3GPP network insertion of trusted, the also resident BBERF in the trusted non-3 GPP access network Central Shanxi Plain, between non-3GPP network access gateway of trusted and the PCRF through Gxa interface exchange message.Subscriber equipment (User Equipment; When UE) roaming; The S9 interface simultaneously, provides application function (the Application Function of business as the interface of ownership place PCRF and vPCRF for UE; Abbreviate AF as) send the business information that is used for generation strategy charging control (Policy andCharging Control abbreviates PCC as) strategy to PCRF through the Rx+ interface.
The public land mobile telephone network of EPS (Public Land Mobile Network; Abbreviate PLMN as) in have a plurality of PCRF nodes usually; And all PCRF nodes belong to one or more Diameter (PCRF) territory, and the ability of all PCRF in same Diameter (PCRF) territory is mutually the same.UE is called an IP connection access network (IP Connectivity Access Network, IP-CAN) session, and the PCC strategy of an IP-CAN session can only be by a PCRF decision to the connection of PDN network.
All be associated with same PCRF in order to ensure relevant all PCEF of an IP-CAN session or BBERF and for this IP-CAN session provides professional AF, EPS has introduced a logic function module in each Diameter (PCRF) territory, that is, and and DRA.When UE will set up an IP-CAN session of arriving PDN, be that a PCRF is selected in this IP-CAN session by DRA, PCEF, BBERF and the AF relevant with this IP-CAN session are associated with on the selected PCRF by DRA.PCEF, BBERF and AF set up the Diameter session with the PCRF that chooses respectively, and through these Diameter sessions transmission strategies that session is controlled to IP-CAN and business information etc.
In order to ensure DRA correctly PCEF, BBERF and AF are associated with a PCRF; DRA will preserve and can the relevant information of this IP-CAN session of unique identification identify or the IP address with corresponding PCRF; The information of sign IP-CAN session has network access Identifier (the Network Access Identity of UE; Abbreviate NAI as), the IP address of UE and the APN (Access Point Name abbreviates APN as) that UE will insert PDN etc., PCEF, BBERF and AF provide these information when the Diameter conversation message of setting up with PCRF; DRA searches the information of preservation, just can find corresponding PCRF.
At present, under roaming scence, deposit three kinds among the EPS IP is provided the framework of service.
First kind of framework is called as the local route, and be as shown in Figure 1, and P-GW is at home network, and by home network operator IP operation (that is, AF is at home network) is provided.
Particularly; As shown in Figure 1, when UE is 3GPP user and when being positioned at visited network, after UE proposes the IP-CAN conversation request; This request at first can be sent to the S-GW of visited network; The S-GW of visited network sends to the P-GW of home network with this request, and after the P-GW of home network received this IP-CAN conversation request, the PCEF among the P-GW (not illustrating in the drawings) sent to request the DRA (hDRA) of home network; Select the PCRF (hPCRF) of a home network by hDRA after, just can set up the IP-CAN session.
As shown in Figure 1; When UE is the user in the non-3GPP IP of the trusted Access Network; After UE sends the IP-CAN conversation request; This request sends to the P-GW of home network by the BBERF in the non-3GPP IP of the trusted IAD, but not the user who trusts non-3GPP network then need be sent to P-GW via ePDG with request message when inserting.After user's in user in the non-3GPP IP of trusted Access Network or the non-3GPP IP of the non-trust Access Network request arrived P-GW, follow-up processing procedure was identical with 3GPP user's processing procedure, no longer repeated here.
Second kind of framework is called as local break-out and by home network operator IP operation is provided, and be as shown in Figure 2, and P-GW is at visited network, and by home network operator IP operation (that is, AF is at home network) is provided.
Particularly; As shown in Figure 2, when UE is 3GPP user and when being positioned at visited network, after UE proposes the IP-CAN conversation request; This request at first can be sent to the S-GW of visited network; The S-GW of visited network sends to the P-GW of visited network with this request, and after the P-GW of visited network received this IP-CAN conversation request, the PCEF among the P-GW (not illustrating in the drawings) sent to request the DRA (hDRA) of home network; Select the PCRF (hPCRF) of a home network by this DRA after, just can set up the IP-CAN session.
When UE is the user among the user in trusted non-3GPP IP Access Network or the non-3GPP IP of the non-trust Access Network; Its conversation request is initiated mode with similar with reference to the mode of the user's initiation session in the said trusted of Fig. 1 non-3GPP IP Access Network or the non-3GPP IP of the non-trust Access Network, no longer repeats here.
The third framework is called as local break-out and by access zone network operator IP operation is provided, and is as shown in Figure 3, and P-GW is at visited network, and by visited network operator IP operation (being that AF is at visited network) is provided.
Particularly, as shown in Figure 3, when UE is 3GPP user; And when visited network; After UE proposed the IP-CAN conversation request, this request at first can be sent to the S-GW of visited network, and the S-GW of visited network sends to this request the P-GW of visited network; After the P-GW of visited network receives this IP-CAN conversation request; PCEF among the P-GW (not illustrating in the drawings) sends to the DRA (vDRA) of visited network with request, select the PCRF (vPCRF) of a visited network by this DRA after, just can set up the IP-CAN session.
When UE is the user among the user in trusted non-3GPP IP Access Network or the non-3GPP IP of the non-trust Access Network; Its conversation request is initiated mode with similar with reference to the mode of the user's initiation session in the said trusted of Fig. 1 non-3GPP IP Access Network or the non-3GPP IP of the non-trust Access Network, no longer repeats here.
DRA selects the concrete implementation of PCRF that following three kinds of modes can be arranged.
Mode one, the Redirect mode.In this mode, when PCEF, BBERF and AF send the Diameter session when setting up request message to PCRF, this message at first is sent out to DRA.When if DRA does not also have the relevant information of this IP-CAN session; DRA can select a PCRF for this IP-CAN session; And sign or the address of selected PCRF returned to transmit leg (that is, PCEF, BBERF and AF), if the relevant information of this IP-CAN session has been arranged among the DRA; Then DRA returns to transmit leg (that is, PCEF, BBERF and AF) with sign or the address of the PCRF of correspondence.Send the Diameter session to selected PCRF again after the address of transmit leg (that is, PCEF, BBERF and AF) acquisition PCRF or the sign and set up request message.
Mode two, the Proxy mode.In this mode, when PCEF, BBERF and AF send the Diameter session when setting up request message to PCRF, this message at first is sent out to DRA.When if DRA does not also have the relevant information of this IP-CAN session; DRA can select a PCRF for this IP-CAN session; And give selected PCRF with this forwards, if the relevant information of this IP-CAN session has been arranged among the DAR, then DRA gives corresponding PCRF with this forwards.The affirmation message that PCRF sends also is transmitted to PCEF, BBERF or AF through DRA.
Mode three, the distortion of Proxy mode.In this mode, similar with the Proxy mode, difference is that DRA can also send to PCEF, BBERF or AF to the address of PCRF when the affirmation message that forwarding PCRF returns.Like this in interacting message subsequently, PCEF, BBERF or AF can be directly and PCRF need pass through DRA alternately and not.
In three kinds of above-mentioned modes, DRA is for all message relevant with the Diameter session that are stored in wherein, and is when conversation end, different to the processing mode of these all message.For mode two; In the time will terminating the Diameter session, DRA can analyze the indication of termination session in the message, can all these sessions be deleted from DRA through the message of DRA; That is the message of, setting up session from article one all can be deleted to other all message subsequently.And for mode one and mode three, because in interacting message subsequently, message is without DRA, and DRA can not delete among the DRA this session for information about according to the message of termination Diameter session.Therefore, under roaming scence, when Diameter session of termination, do not exist consistent method to delete the IP-CAN session related information of preserving among the DRA.
Problem to the IP-CAN session related information that can not preserve among the deletion DRA when the session termination that exists in aforesaid way one and the mode three does not propose effective solution at present as yet.
Summary of the invention
Consider and when session termination, to delete the problem of the IP-CAN session related information of preserving among the DRA in the correlation technique and make the present invention; For this reason; Main purpose of the present invention is to provide the session information management method and the system of a kind of Diameter route agent, in order to solve the problems referred to above in the correlation technique.
The session information management method of a kind of Diameter route agent is provided according to an aspect of the present invention.
Session information management method according to Diameter of the present invention route agent comprises:
The session termination message that visit ground Diameter route agent will receive from the policy and charging control terminal sends to visit ground "Policy and Charging Rules Function;
Visit ground "Policy and Charging Rules Function sends to home network Diameter route agent with the session ending message;
Home network Diameter route agent sends to the home network "Policy and Charging Rules Function with the session ending message;
Home network Diameter route agent and session termination acknowledge message and the deletion local session related news preserved of visit ground Diameter route agent in response to the "Policy and Charging Rules Function that belongs to network from it separately.
Wherein, home network Diameter route agent is specially with the processing of visiting ground Diameter route agent its local session related news of preserving of deletion:
Home network Diameter route agent receives the session termination acknowledge message from the home network "Policy and Charging Rules Function, the session related news that deletion home network Diameter route agent preserves;
Home network Diameter route agent sends to visit ground "Policy and Charging Rules Function with the session acknowledge message that terminates;
Visit ground "Policy and Charging Rules Function sends to visit ground Diameter route agent with the session acknowledge message that terminates;
In response to the session termination acknowledge message, visit ground Diameter route agent its local session related news of preserving of deletion.
Wherein,,, home network Diameter route agent further comprises before sending the session termination acknowledge message at local network strategy and charging rule functions:
Its local session related news of preserving of home network "Policy and Charging Rules Function deletion.
Wherein,,, visit ground Diameter route agent further comprises before sending the session termination acknowledge message at visit ground "Policy and Charging Rules Function: its local session related news of preserving of visit ground "Policy and Charging Rules Function deletion.
Wherein, the session related news be following one of at least: the binding relationship information of policy and charging control terminal and home network "Policy and Charging Rules Function; Policy and charging control terminal and the binding relationship information of visiting the ground "Policy and Charging Rules Function.
Wherein, the policy and charging control terminal be following one of at least: bearing binding and event reporting function, strategy and charge execution function, application function.
The conversation message management system of a kind of Diameter route agent is provided according to another aspect of the present invention.
Conversation message management system according to Diameter of the present invention route agent comprises:
Visit ground Diameter route agent; Be used for its session termination message that receives from the policy and charging control terminal is sent to visit ground "Policy and Charging Rules Function; And in response to the session termination acknowledge message from visit ground "Policy and Charging Rules Function, the session related news that deletion visit ground Diameter route agent preserves;
Visit ground "Policy and Charging Rules Function; Be used for and send to home network Diameter route agent from the session termination message of visit ground Diameter route agent, and will send to visit ground Diameter route agent from the session termination acknowledge message of local network Diameter route agent;
Home network Diameter route agent; Be used for and send to the home network "Policy and Charging Rules Function from the session termination message of visit ground "Policy and Charging Rules Function; And in response to the session related news of preserving from the session termination acknowledge message of home network "Policy and Charging Rules Function deletion home network Diameter route agent, and "Policy and Charging Rules Function with will sending to visit from the session termination acknowledge message of local network strategy and charging rule functions;
The home network "Policy and Charging Rules Function is used for returning the session termination acknowledge message in response to the session termination message from home network Diameter route agent to home network Diameter route agent.
Wherein, network strategy and charging rule functions also are used in response to the session termination message from home network Diameter route agent in the local, the local session related news of preserving of deletion home network "Policy and Charging Rules Function.
Wherein, "Policy and Charging Rules Function also is used in response to the session termination acknowledge message from home network Diameter route agent on visit ground, the local session related news of preserving of deletion visit ground "Policy and Charging Rules Function.
Wherein, the session related news be following one of at least: the binding relationship information of policy and charging control terminal and home network "Policy and Charging Rules Function; Policy and charging control terminal and the binding relationship information of visiting the ground "Policy and Charging Rules Function.
Through technique scheme of the present invention; The IP-CAN session command for stopping that DRA is sent in response to different PCC terminal; The message relevant with the IP-CAN session to preserve this locality is deleted; Be disabled the Internet resources that take, improved network processes efficient thereby discharged, avoided resource by unnecessary situation about taking.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the network configuration block diagram that route and IP operation are provided at home network for the roamer according to the EPS of correlation technique;
Fig. 2 is the network configuration block diagram that route is provided and IP operation is provided at home network at roaming network for the roamer according to the EPS of correlation technique;
Fig. 3 is the network configuration block diagram that route and IP operation are provided at roaming network for the roamer according to the EPS of correlation technique;
Fig. 4 is the flow chart according to the session information management method of the DRA of the inventive method embodiment;
Fig. 5 is the session information management method of DRA according to a preferred embodiment of the invention carries out the deletion of session related news in scene illustrated in figures 1 and 2 signaling process figure;
Fig. 6 is the session information management method of DRA according to a preferred embodiment of the invention carries out the deletion of session related news in scene shown in Figure 2 signaling process figure;
Fig. 7 is the session information management method of DRA according to a preferred embodiment of the invention carries out the deletion of session related news in scene shown in Figure 3 signaling process figure;
Fig. 8 is the block diagram according to the conversation message management system of the DRA of system embodiment of the present invention.
Embodiment
Functional overview
The present invention is directed to the problem that when session termination, to delete the IP-CAN session related information of preserving among the DRA in the correlation technique; Consider the Message Processing characteristics of Different Strategies charging control terminal under the different scenes from angle comprehensive, system; Session information management method and the system of a kind of DRA have been proposed; The IP-CAN session command for stopping that DRA sends in response to Different Strategies charging control terminal; Can carry out unanimity to the message relevant among the DRA and delete effectively, be disabled the Internet resources that take, improved network processes efficient thereby discharged with the IP-CAN session.
Below in conjunction with accompanying drawing embodiment is elaborated.
Method embodiment
According to embodiments of the invention, the session information management method of a kind of DRA is provided.
Fig. 4 shows the flow process according to the session information management method of the DRA of the inventive method embodiment, and is as shown in Figure 4, comprises step S402, step S404, step S406 and step S408 according to the session information management method of the DRA of the inventive method embodiment.
To combine Fig. 4 that above-mentioned steps is elaborated below.
Step S402, the IP-CAN session termination message that vDRA will receive from policy and charging control (PCC) terminal sends to visit ground "Policy and Charging Rules Function (vPCRF);
Step S404, vPCRF sends to hDRA with IP-CAN session termination message;
Step S406, hDRA sends to hPCRF (hPCRF) with IP-CAN session termination message;
Step S408, hDRA and vDRA are in response to IP-CAN session termination acknowledge message and the local IP-CAN session related news of preserving of deletion of the PCRF that belongs to network from it separately.
Wherein, the processing of its local IP-CAN session related news of preserving of hDRA and vDRA deletion is specially:
The first, hDRA receives the session termination acknowledge message from hPCRF, the IP-CAN session related news that deletion hDRA preserves;
Wherein, before hDRA sent IP-CAN session termination acknowledge message, this method may further include at hPCRF: its local session related news of preserving of hPCRF deletion.
The second, hDRA sends to vPCRF with IP-CAN session termination acknowledge message;
The 3rd, vPCRF sends to vDRA with IP-CAN session termination acknowledge message;
Wherein, before vDRA sent IP-CAN session termination acknowledge message, this method may further include at vPCRF: its local IP-CAN session related news of preserving of vPCRF deletion.
The 4th, in response to IP-CAN session termination acknowledge message, its local IP-CAN session related news of preserving of vDRA deletion.
Wherein, above-mentioned IP-CAN session related news be following one of at least: the binding relationship information of PCC terminal and hPCRF; The binding relationship information of PCC terminal and vPCRF.
Wherein, above-mentioned PCC terminal be following one of at least: BBERF, PCEF, AF.
Through technique scheme, can carry out unanimity to the message relevant among the DRA and delete effectively with the IP-CAN session.
Describe in the face of the application of the preferred embodiments of the present invention under different scenes down.
Scene one, subscriber equipment (UE) roams to visited network, and; By home network or visited network route is provided, operator provides IP operation by home network, promptly; P-GW is positioned at home network or visited network, and AF is positioned at home network, and concrete application scenarios can see figures.1.and.2.
Under this scene; When the IP-CAN session termination; BBERF is access zone network (UE is under the scene that local route or local route dredge); Terminate owing to attachment removal has taken place UE that the gateway control session termination flow process that gravity treatment causes has taken place is as shown in Figure 5 for IP-CAN session or BBERF, this handling process comprises the steps:
Step 501: the BBERF that resides at S-GW or trusted non-3 GPP access network pass receives deletion gateway control session request message, network access Identifier (NAI), APN (APN) and the IP address of carrying UE in the message;
The gateway control session that step 502:BBERF will delete according to the NAI of UE and APN inquiry institute is sent gateway control session termination Indication message to vDRA, and destination-address carries the NAI of UE, the IP address of APN or UE according to the configuration acquisition in the message;
Step 503:vDRA is transmitted to vPCRF with the gateway control session Indication message that terminates;
Step 504:vPCRF sends gateway control session termination Indication message to hDRA, and the destination domain name is the domain name according to the home network of NAI acquisition in the message, the IP address of carrying NAI and the APN of UE or carrying UE;
Step 505:hDRA transmits message to hPCRF;
Step 506:hPCRF returns gateway control session terminate-ack message to hDRA;
The information of the local gateway control session of preserving of step 507:hDRA deletion is returned gateway control session terminate-ack message to vPCRF;
Step 508:vPCRF returns gateway control session terminate-ack message to vDRA;
The information of the local gateway control session of preserving of step 509:vDRA deletion is returned gateway control session terminate-ack message to BBERF;
Step 510:BBERF returns deletion gateway control session response message.
Scene two, UE roams into visited network, sets up the route of IP operation at visited network, and operator provides IP operation by visited network, that is and, P-GW is at visited network, and AF is at visited network, and this scene can be with reference to shown in Figure 2.
At this after the match, AF causes that access zone network (UE is in local break-out and access zone network operator provides under the scene of IP operation) AF session termination flow process is as shown in Figure 6 when business terminates, and this handling process comprises the steps:
Step 601:AF sends AF session termination request message to vDRA, and destination-address obtains according to configuration in the message, the IP address of carrying APN and UE;
Step 602:vDRA transmits the session termination messages to vPCRF;
Step 603:vPCRF sends AF session termination request message to hDRA, and the destination domain name is according to the domain name of the home network of NAI acquisition in the message, carries APN and IP address;
Step 604:hDRA is according to APN and IP address, and transmits the session termination messages to hPCRF;
Step 605:hPCRF deletes this AF relevant information according to session identification, and returns AF session termination acknowledge message to hDRA;
Step 606:hDRA deletes the information of pairing AF session among the hDRA, and returns session terminate-ack message to vPCRF;
After step 607:vPCRF receives this acknowledge message, the relevant information of deletion AF session, and return session termination to vDRA and confirm.
After step 608:vDRA received acknowledge message, pairing AF session information among the deletion vDRA returned the session terminate-ack to AF.
Scene three, UE roams into visited network, sets up the route of IP operation at visited network, and operator provides IP operation by visited network, that is and, P-GW and AF are all at visited network, and this scene can be with reference to situation shown in Figure 3.
Under this scene, UE inserts from E-UTRAN, perhaps from the non-3GPP network insertion of trusted; Perhaps after trustless non-3GPP network insertion 3GPP system; UE initiates attachment removal, and the flow process of initiation IP-CAN session termination is as shown in Figure 7, and this handling process comprises the steps:
Step 701: the BBERF that resides at S-GW or trusted non-3 GPP access network pass receives deletion IP-CAN conversation request message, NAI, APN and the IP address of carrying UE in the message;
Step 702:BBERF initiates gateway control session termination flow process;
Step 703:BBERF sends deletion IP-CAN conversation request to PCEF;
Step 704:PCEF sends IP-CAN session termination Indication message to vDRA, and destination-address is to obtain the IP address of carrying APN and UE according to configuration in the message;
Step 705:vDRA gives vPCRF with forwards;
The local IP-CAN session information of step 706:vPCRF deletion arrives hDRA with forwards;
Step 707:hDRA arrives hPCRF with forwards;
The local IP-CAN session information of step 708:hPCRF deletion sends acknowledge message to hDRA;
The local IP-CAN session information of preserving of step 709:hDRA deletion sends acknowledge message to vPCRF;
The local IP-CAN session information of step 710:vPCRF deletion sends acknowledge message to vDRA;
The local IP-CAN session information of preserving of step 711:vDRA deletion sends acknowledge message to PCEF;
Step 712:PCEF returns deletion IP-CAN session to BBERF and replys;
Step 713:BBERF returns deletion IP-CAN session and replys;
Carry out following steps for each AF session relevant with this IP-CAN session:
Step 714:hPCRF sends to vPCRF and loses communication notification messages;
Step 715:vPCRF sends to AF and loses communication notification messages;
Step 716:AF returns the notice response message to vPCRF;
Step 717:vPCRF returns the notice response message to hPCRF;
Step 718:AF initiates AF session termination flow process.
The session information management method of DRA provided by the invention can be under above-mentioned different scene, the IP-CAN session related information of behind session termination, still preserving among the deletion DRA.
According to embodiments of the invention,, the conversation message management system of a kind of DRA is provided also based on the session information management method of above-mentioned DRA.
System embodiment
Fig. 8 shows the block diagram according to the conversation message management system of DRA of the present invention, and is as shown in Figure 8, comprises according to the conversation message management system of DRA of the present invention:
VDRA802 is used for its session termination message that receives from the PCC terminal is sent to vPCRF804, and in response to the session termination acknowledge message from vPCRF804, the session related news that deletion vDRA802 preserves;
Visit ground "Policy and Charging Rules Function 804 is used for the session termination message from vDRA802 is sent to hDRA806, and will sends to vDRA802 from the session termination acknowledge message of hDRA806;
HDRA806; Be used for and send to hPCRF808 from the session termination message of vPCRF808; And in response to the session termination acknowledge message from hPCRF808, the session related news that deletion hDRA806 preserves, and will send to vPCRF804 from the session termination acknowledge message of hPCRF808;
HPCRF808 is used for returning the session termination acknowledge message in response to the session termination message from hDRA806 to hDRA806.
Wherein, also be used in response to session termination message the local session related news of preserving of deletion hPCRF808 from hDRA806 at hPCRF808.
Wherein, also be used in response to session termination acknowledge message the local session related news of preserving of deletion vPCRF804 from hDRA806 at vPCRF804.
Wherein, the session related news be following one of at least: the binding relationship information of plan PCC terminal and hPCRF; The binding relationship information of PCC terminal and vPCRF.
Through technique scheme, the session information management method of the DRA that provides in can implementation method embodiment promptly, can be deleted the IP-CAN session related information of still preserving among the DRA behind session termination.
In sum; By means of technical scheme provided by the invention; The IP-CAN session command for stopping that DRA is sent in response to different PCC terminal; The message relevant with the IP-CAN session to preserve this locality is deleted, and is disabled the Internet resources that take, has improved network processes efficient thereby discharged, and has avoided resource by unnecessary situation about taking.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (5)

1. the session information management method of a Diameter route agent is characterized in that, comprising:
The session termination message that visit ground Diameter route agent will receive from the policy and charging control terminal sends to visit ground "Policy and Charging Rules Function;
Said visit ground "Policy and Charging Rules Function sends to home network Diameter route agent with said session termination message;
Said home network Diameter route agent sends to the home network "Policy and Charging Rules Function with said session termination message;
Said home network Diameter route agent and said visit ground Diameter route agent are in response to the session termination acknowledge message and the local session related news of preserving of deletion of the "Policy and Charging Rules Function that belongs to network from it separately; The processing of said home network Diameter route agent and said visit ground Diameter route agent its local said session related news of preserving of deletion is specially: said home network Diameter route agent receives the session termination acknowledge message from said home network "Policy and Charging Rules Function, deletes the session related news that said home network Diameter route agent preserves; Said home network Diameter route agent sends to said visit ground "Policy and Charging Rules Function with said session termination acknowledge message; Said visit ground "Policy and Charging Rules Function sends to said visit ground Diameter route agent with said session termination acknowledge message; In response to said session termination acknowledge message, said visit ground Diameter route agent its local session related news of preserving of deletion; Wherein,,, said home network Diameter route agent further comprises before sending said session termination acknowledge message at said home network "Policy and Charging Rules Function: its local session related news of preserving of said home network "Policy and Charging Rules Function deletion; ,, said visit ground Diameter route agent further comprises before sending said session termination acknowledge message at said visit ground "Policy and Charging Rules Function: its local session related news of preserving of said visit ground "Policy and Charging Rules Function deletion.
2. method according to claim 1 is characterized in that, said session related news be following one of at least: the binding relationship information of said policy and charging control terminal and said home network "Policy and Charging Rules Function; The binding relationship information of said policy and charging control terminal and said visit ground "Policy and Charging Rules Function.
3. method according to claim 1 and 2 is characterized in that, said policy and charging control terminal be following one of at least: bearing binding and event reporting function, strategy and charge execution function, application function.
4. the conversation message management system of a Diameter route agent is characterized in that, comprising:
Visit ground Diameter route agent; Be used for its session termination message that receives from the policy and charging control terminal is sent to visit ground "Policy and Charging Rules Function; And, delete the session related news that said visit ground Diameter route agent preserves in response to session termination acknowledge message from said visit ground "Policy and Charging Rules Function;
Said visit ground "Policy and Charging Rules Function; Be used for and will send to home network Diameter route agent from the said session termination message of said visit ground Diameter route agent, and will be from the session termination acknowledge message of said home network Diameter route agent Diameter route agent with sending to said visit; Said visit ground "Policy and Charging Rules Function also is used for delete the session related news of the local preservation of said visit ground "Policy and Charging Rules Function in response to the session termination acknowledge message from said home network Diameter route agent;
Said home network Diameter route agent; Be used for and send to the home network "Policy and Charging Rules Function from the said session termination message of said visit ground "Policy and Charging Rules Function; And in response to deleting the session related news that said home network Diameter route agent preserves from the session termination acknowledge message of said home network "Policy and Charging Rules Function, and will said session termination acknowledge message from said home network "Policy and Charging Rules Function "Policy and Charging Rules Function with sending to said visit;
Said home network "Policy and Charging Rules Function is used in response to the session termination message from said home network Diameter route agent, returns the session termination acknowledge message to said home network Diameter route agent; Said home network "Policy and Charging Rules Function also is used in response to the session termination message from said home network Diameter route agent, deletes the local session related news of preserving of said home network "Policy and Charging Rules Function.
5. system according to claim 4 is characterized in that, said session related news be following one of at least: the binding relationship information of said policy and charging control terminal and said home network "Policy and Charging Rules Function; The binding relationship information of said policy and charging control terminal and said visit ground "Policy and Charging Rules Function.
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