CN103379465B - Delete method, system and the strategic server bound in Diameter route agents - Google Patents
Delete method, system and the strategic server bound in Diameter route agents Download PDFInfo
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Abstract
The present invention provides a kind of method for deleting binding information in Diameter route agents, including：In the policy control session termination that the first strategic server and the second strategic server are established for user equipment, domain whether there is Diameter route agents DRA where first strategic server judges second strategic server, if there is, message then is sent to domain where second strategic server, the DRA bindings of user equipment described in the DRA are deleted in request.The present invention also provides a kind of strategic servers.Provide a kind of system for deleting binding information in Diameter route agents.The present invention first judges whether DRA when policy control is controlled and terminated, and there are during DRA, just sending message to delete DRA bindings, avoids unnecessary signaling and sends.
Description
Technical field
The present invention relates to bound in a kind of deletion Diameter route agents (DRA, Diameter Routing Agent)
The technology of information more particularly to a kind of user equipment (UE, User Equipment) pass through Broadband Forum (BBF, Broadband
Forum it) deletes during grouping system (EPS, Evolved Packet System) network of the access evolution such as access net and is tied up in DRA
Determine the method, system and strategic server of information.
Background technology
Fig. 1 is the configuration diagram of the grouping system of the evolution under non-roaming scene, as shown in Figure 1, EPS is by the logical of evolution
With mobile communication system land radio access web (E-UTRAN, Evolved Universal Terrestrial Radio
Access Network), mobile management unit (MME, Mobility Management Entity), gateway (S-GW,
Serving Gateway), grouped data network gateway (P-GW or PDN GW, Packet Data Network Gateway),
Home subscriber server (HSS, Home Subscriber Server), "Policy and Charging Rules Function (PCRF, Policy and
Charging Rules Function) entity and other support nodes composition, wherein, PCRF be policy and charging control (PCC,
Policy and Charging Control) core, be responsible for strategic decision-making and the formulation of charging regulation.PCRF provides base
In business data flow network control rule, network control include business data flow detection, gate (Gating Control),
Service quality (QoS, Quality of Service) control and the charging based on data flow etc..The strategy that PCRF is formulated
With charging regulation be sent to policy and charging enforcement function (PCEF, Policy Charging Enforcement Function) by
It is performed, meanwhile, PCRF also needs to ensure that these rules are consistent with the signing information of user.PCRF generates strategy and charging regulation
Foundation include：It is obtained and the relevant information of business from application function (AF, Application Function)；It contracts from user
Database (SPR, Subscription Profile Repository) obtains and user policy, billing control and subscription information；From
PCEF obtains the information with carrying network of relation.
EPS supports the intercommunication with non-3 GPP system, and the intercommunication with non-3 GPP system is realized by S2a/S2b/S2c interfaces,
P-GW is as the anchor point between 3GPP and non-3 GPP system.As shown in Figure 1, wherein non-3 GPP system is divided into trusted non-3 gpp
IP is accessed and trustless non-3 gpp IP accesses, trusted non-3 gpp IP accesses can directly be connect by S2a interfaces with P-GW；
Trustless non-3 gpp IP accesses packet data gateway (ePDG, Evolved Packet Data that need to be Jing Guo evolution
Gateway) be connected with P-GW, the interface between ePDG and P-GW is S2b, and between UE and ePDG using IPSec to signaling and
Protection is encrypted in data.It is relevant that S2c provides the user plane of user equipment (UE, User Equipment) between P-GW
Control and mobility support, the mobility management protocol supported are mobile IP v 6 (DSMIPv6, the Moblie for supporting double stacks
IPv6support for dual stack Hosts and Routers)。
Many operator's concern fixed network mobile fusions (FMC, Fixed Mobile Convergence) at present, and be directed to
3GPP and Broadband Forum (BBF, Broadband Forum) interconnection and interflow are studied.For user by BBF access net (
Claiming fixed broadband access net (Fixed Broadband Access Network)) scene of access mobile core net needs logarithm
According to entire transmission path (data can pass through fixed network and mobile network and transmit) on QoS ensured.Main two kinds of research at present
BBF accesses the scene with 3GPP interoperability.
Fig. 2 accesses EPS core nets for UE by WLAN (WLAN, Wireless Local Area Network)
Schematic diagram, it is wide after UE access BBF, which is accessed, to be netted as shown in Fig. 2, BBF accesses net as fly-by-night non-3 GPP access network
Leased line service device (BRAS, Broadband Remote Access Server)/wideband network gateway (BNG, Broadband
Network Gateway) will perform the access authentication based on 3GPP, while by BBF broadband policy control function (BPCF,
Broadband Policy Control Function) actively initiate the session of S9* and the PCRF of 3GPP is interacted.So as to
PCRF can be interacted when carrying out QoS mandates with BPCF, and BPCF performs the admission control of resource.
However in certain scenes, BBF access nets can not perceive the access of UE or BBF access nets do not support base
In the access authentication of 3GPP.In such a scenario, the foundation that BPCF cannot will actively initiate S9* sessions, so as to can not achieve pair
The QoS controls of UE access.At this point, session establishment flow can only be initiated from PCRF to BPCF.
Fig. 3 is the configuration diagram for the core net that H (e) NB access net access EPS by BBF, as shown in figure 3, working as 3GPP
When UE accesses 3GPP core net access services by HeNB, required QoS is no more than the QoS that BBF access nets can be provided.By
It is non to be accessed in 3GPP UE by H (e) NB to BBF access nets, therefore can only initiate session to BPCF from PCRF and build
Vertical flow.
For the roaming scence of above-mentioned Fig. 2 and two kinds of access architectures shown in Fig. 3, since BBF access nets can not perceive
The access of 3GPP UE, it is thus possible to need to be built from ownership place PCRF (i.e. H-PCRF) to visited place PCRF (i.e. V-PCRF) triggerings
Vertical S9 sessions, and then S9a sessions are established by V-PCRF triggerings.
In addition, it is deposited in a public land mobile telephone network (PLMN, Public Land Mobile Network) of EPS
In multiple PCRF nodes, and all PCRF nodes belong to one or more Diameter (PCRF) domain, same
All PCRF in Diameter (PCRF) domain have identical ability.One UE is to packet data network (PDN, Packet
Data Network) connection be known as IP connection access net (IP-CAN, IP Connectivity Access
Network) session.The PCC strategies of one IP-CAN session are only determined by a PCRF.In order to ensure an IP-CAN session phase
All PCEF or bearing binding and event reporting function (BBERF, Bearing Binding and Event closed
Reporting Function) and the AF of business is provided for this IP-CAN session is all associated with same PCRF, EPS is every
A logic functional block-DRA is introduced in a Diameter (PCRF) domain.UE will establish the IP-CAN sessions to a PDN
When, by DRA for this IP-CAN session select a PCRF, with this IP-CAN session relevant PCEF, BBERF and AF by
DRA is associated on selected PCRF.PCEF, BBERF and AF establish Diameter sessions with the PCRF chosen respectively, and lead to
Cross strategy and business information that these Diameter sessions transmission controls IP-CAN sessions etc..In order to ensure DRA is correct
PCEF, BBERF and AF are associated with a PCRF by ground, and DRA will be preserved being capable of unique mark this relevant letter of IP-CAN sessions
Breath and corresponding PCRF mark or IP address, mark IP-CAN sessions information have UE network access Identifier (NAI,
Network Access Identifier), the IP address and UE of UE will access access point name (APN, the Access of PDN
Point Name) etc..When PCEF, BBERF and AF of same IP-CAN sessions are in foundation and the Diameter sessions of PCRF,
These information are provided to DRA, DRA searches the information preserved, it is possible to select same PCRF for it.It can be preserved in DRA
PCEF, BBERF or AF and the information of the PCRF Diameter sessions established, the session identification for the Diameter sessions such as established
Deng.DRA so just can know that its Diameter session managed by IP-CAN sessions.When PCEF, BBERF or AF and PCRF are built
When vertical Diameter sessions are deleted, PCEF, BBERF or AF will notify DRA to delete the Diameter, and DRA can delete this
The information (such as session identification) of Diameter sessions.When all Diameter sessions that DRA is some IP-CAN session management
After deletion, all information that DRA will delete the IP-CAN sessions.In addition, according to configuration, DRA may be that a UE selection is same
One PCRF.
Net is accessed similarly, for BBF, it is also possible to which there are multiple BPCF nodes, and all BPCF nodes belong to one
A or multiple Diameter (BPCF) domains can also introduce DRA, and be an IP-CAN session or a UE selection one using DRA
A BPCF.
At present, DRA specific implementations can be there are three types of mode.(1) Redirect (redirection) mode.As PCEF, BBERF and
When AF is to PCRF transmission Diameter session establishment request messages, which is sent primarily to
DRA.If during relevant there are no this IP-CAN session information of DRA, DRA can be that this IP-CAN session selects a PCRF.
And the mark of selected PCRF or address are returned into sender.It is relevant that if this IP-CAN session is had existed in DRA
Information, then DRA the mark of corresponding PCRF or address are returned into sender.Behind the address of sender's acquisition PCRF or mark again
Diameter session establishment request messages are sent to selected PCRF.(2) Proxy (agency) mode.As PCEF, BBERF and
When AF is to PCRF transmission Diameter session establishment request messages, which is sent primarily to
DRA.If during relevant there are no this IP-CAN session information of DRA, DRA can be that this IP-CAN session selects a PCRF,
And the Diameter session establishment request messages are transmitted to selected PCRF.If there is this IP-CAN session in DRA
Relevant information, then DRA the message is asked to be transmitted to corresponding PCRF Diameter session establishments.The confirmation message of PCRF
PCEF, BBERF or AF are transmitted to by DRA.(3) deformation of Proxy modes.Similar with Proxy modes, difference is DRA
The address of PCRF can be also sent to PCEF, BBERF or AF in the confirmation message for forwarding PCRF returns.Disappear in this way in subsequent
In breath interaction, PCEF, BBERF or AF can be interacted directly with PCRF without passing through DRA.
For mode (2), the message or subsequent message of either first session establishment be all by DRA, because
, when Diameter sessions to be terminated, DRA can analyze the instruction for the session that terminates in outbound message, so as to delete this in DRA for this
The information of session.For mode (3), when Diameter sessions to be terminated, as long as ending message is first sent to by client
DRA, then PCEF is transmitted to by DRA and is achieved that.
For the scene of fixed network mobile fusion, S9 sessions are established when H-PCRF needs to trigger V-PCRF, H-PCRF is to V-
PCRF sends TER (request is established in Trigger Establishment Request, triggering), and does not keep session status, this
When V-DRA receive TER message after, for the UE select a V-PCRF and create DRA binding, then V-PCRF to H-PCRF initiate
S9 session establishments (Fig. 4).When H-PCRF needs to terminate S9 sessions, H-PCRF needs to retransmit TER message, V-DRA to V-DRA
The DRA that the user is deleted according to the message binds (Fig. 5).
Triggering BPCF is needed to establish S9a sessions, PCRF or V-PCRF similarly for PCRF or V-PCRF to send to BPCF
TER, and do not keep session status, be now placed in BBF domains DRA receive TER message after, select a BPCF for the UE and create
DRA bindings are built, then BPCF initiates S9a session establishments to PCRF or V-PCRF.When PCRF or V-PCRF need the S9a sessions that terminate
When, PCRF or V-PCRF need to retransmit TER message to DRA, and the DRA that DRA deletes the user according to the message is bound.
Then, in the prior art, it is not scenes of each PLMN there are the multiple PCRF of DRA management, if one
DRA is not present in PLMN, then H-PCRF sends TER message and delete DRA and bind to V-PCRF to be not necessarily to, and increases letter
Expense is enabled, and increases the complexity of PCRF.
Invention content
The method of binding information in DRA, system and strategy clothes are deleted the technical problem to be solved in the present invention is to provide a kind of
Business device avoids unnecessary signaling and sends.
To solve the above-mentioned problems, the present invention provides a kind of sides for deleting binding information in Diameter route agents
Method, including：
In the policy control session termination that the first strategic server and the second strategic server are established for user equipment, institute
Domain where the first strategic server judges second strategic server is stated with the presence or absence of Diameter route agents DRA, if
In the presence of, then to transmission message in domain where second strategic server, the DRA of user equipment described in the request deletion DRA
Binding.
Further, the above method can also have the characteristics that, first strategic server judges second strategy
Domain where server includes with the presence or absence of DRA：
First strategic server is according to the second strategy described during the foundation for triggering the policy control session
Domain where the second strategic server is stated in the message judgement that domain where server returns whether there is DRA.
Further, the above method can also have the characteristics that, the message that domain where second strategic server returns
Attach most importance to directed message；Or indicated for domain where carrying second strategic server there are Diameter route agents DRA or
The triggering for deleting DRA bindings is needed to establish response TEA message or redirect message.
Further, the above method can also have the characteristics that, first strategic server takes to the described second strategy
Request deletion DRA bindings instruction or policy control session termination instruction are carried in the message that domain where business device is sent.
Further, the above method can also have the characteristics that, first strategic server is ownership place strategy and meter
Take rule functional H-PCRF, second strategic server is visited place "Policy and Charging Rules Function V-PCRF.
Further, the above method can also have the characteristics that, first strategic server is strategy and charging regulation
Function PCRF/V-PCRF, second strategic server are broadband policy control function BPCF.
The present invention also provides a kind of strategic server, the strategic server includes judging unit and transmitting element, wherein：
The judging unit is used for, in the policy control session termination established with the second strategic server for user equipment
When, domain whether there is Diameter route agents DRA where judging second strategic server；
The transmitting element is used for, where the judging unit judges second strategic server domain there are during DRA,
Domain where to second strategic server sends message, and the DRA bindings of user equipment described in the DRA are deleted in request.
Further, above-mentioned strategic server can also have the characteristics that, the judging unit judges second strategy
Domain where server includes with the presence or absence of DRA：
It is returned according to domain where second strategic server during the foundation for triggering the policy control session
Domain where the second strategic server is stated in message judgement whether there is DRA.
Further, above-mentioned strategic server can also have the characteristics that, domain returns where second strategic server
Message attach most importance to directed message；Or there are Diameter route agents DRA for domain where carrying second strategic server
It indicates or needs to delete the TEA message of DRA bindings or redirect message.
Further, above-mentioned strategic server can also have the characteristics that, in the message that the transmitting element is sent
It carries request and deletes DRA bindings instruction or policy control session termination instruction.
Further, above-mentioned strategic server can also have the characteristics that, the strategic server for ownership place strategy and
Charging rule functions H-PCRF, second strategic server are visited place "Policy and Charging Rules Function V-PCRF.
Further, above-mentioned strategic server can also have the characteristics that, the strategic server is strategy and charging rule
Then function PCRF/V-PCRF, second strategic server are broadband policy control function BPCF.
The present invention also provides a kind of system for deleting binding information in Diameter route agents, including：Strategic server
And DRA, wherein：
The DRA is used for, and weight is returned to the strategic server during the foundation for triggering the policy control session
Directed message；Or it returns and carries the second strategic server place domain there are Diameter route agents DRA instructions or need
It deletes the TEA message of DRA bindings or redirects message.
The present invention first judges whether DRA when policy control is controlled and terminated, and there are during DRA, just transmission message is deleted
Except DRA is bound, avoid unnecessary signaling and send.
Description of the drawings
Fig. 1 is the configuration diagram of the grouping system of the evolution under non-roaming scene；
Fig. 2 is the schematic diagram that UE accesses EPS core nets by WLAN；
Fig. 3 is the configuration diagram for the core net that H (e) NB access net access EPS by BBF；
Fig. 4 is the flow chart that the construction strategy based on Fig. 2 or Fig. 3 frameworks controls session in the prior art；
Fig. 5 is the stream that the deletion strategy in DRA based on Fig. 2 or Fig. 3 frameworks controls binding session information in the prior art
Cheng Tu；
Fig. 6 is that the present invention is based on the flow charts that the construction strategy of Fig. 2 or Fig. 3 frameworks controls session；
Fig. 7 is that the present invention is based on the flow charts that the deletion strategy in DRA of Fig. 2 or Fig. 3 frameworks controls binding session information；
Fig. 8 is that the present invention is based on the flow charts that the construction strategy of Fig. 2 or Fig. 3 frameworks controls session；
Fig. 9 is that the present invention is based on the flow charts that the deletion strategy in DRA of Fig. 2 or Fig. 3 frameworks controls binding session information；
Figure 10 is strategic server block diagram of the embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature mutually can arbitrarily combine.
The embodiment of the present invention provides a kind of method for deleting binding information in Diameter route agents, including：
In the policy control session termination that the first strategic server and the second strategic server are established for user equipment, institute
Domain where the first strategic server judges second strategic server is stated with the presence or absence of Diameter route agents DRA, if
In the presence of, then to transmission message in domain where second strategic server, the DRA of user equipment described in the request deletion DRA
Binding.
Wherein, first strategic server judges that domain where second strategic server includes with the presence or absence of DRA：
First strategic server is according to the second strategy described during the foundation for triggering the policy control session
Domain where the second strategic server is stated in the message judgement that domain where server returns whether there is DRA.
Wherein, the message that domain where second strategic server returns is attached most importance to directed message；Or to carry described the
Domain where two strategic servers indicates there are Diameter route agents DRA or the triggering for deleting DRA bindings is needed to establish response
TEA message redirects message.
Wherein, first strategic server is carried into the message that domain where second strategic server is sent
DRA bindings instruction or policy control session termination instruction are deleted in request.
Wherein, first strategic server is H-PCRF, and second strategic server is V-PCRF, alternatively, described
First strategic server is PCRF/V-PCRF, and second strategic server is BPCF.
Embodiment one
Fig. 6 is to be of the invention under roaming scence, and in UE attaching process, visited place DRA (V-DRA) selects visited place PCRF
(V-PCRF) flow chart, wherein V-DRA are Redirect modes, as shown in fig. 6, this method specifically includes following steps：
Step 601：H-PCRF is toggled, needs to establish the policy control session between V-PCRF, i.e. S9 sessions.This
When, there are no the S9 sessions established for the UE between V-PCRF and H-PCRF.
The triggering may be that H-PCRF sending strategys control conversation message, (i.e. IP-CAN session establishments instruction disappears P-GW
Breath) caused by, the instruction information that UE is accessed by WLAN/H (e) NB is carried in the policy control session message.H-PCRF
After receiving the policy control session message, judgement needs to establish the policy control session (i.e. S9 sessions) between V-PCRF, with
It will pass through the admission control that V-PCRF accesses net offer strategy and request BBF access nets to BBF.
Step 602：H-PCRF sends TER message to visited network, and user identifier, PDN marks are carried in the TER message
This address/IP address of (optional) and UE/H (e) NB local ip address, can also carry in message request establish session instruction (can
Choosing).Auth-Session-State (authen session state) AVP, value NO_STATE_MAINTAINED is carried in message.
The message can be first routed to V-DRA；
Request, which can be further carried, in the Diameter session establishments request message establishes session label information, so as to
Judge whether the session V-PCRF that request is established has initiated in H-PCRF.It can be UE that session label information is established in the request
What the location information (i.e. this address/IP address of UE or H (e) NB local ip address) or H-PCRF of access BBF access nets distributed
Mark or user identifier or user identifier and the PDN mark or the local ip address of UE that can uniquely distinguish.
Step 603：V-DRA selects V-PCRF for the user, and preserves correspondence (user identifier, PDN marks, V-
PCRF is identified) or (user identifier, V-PCRF marks) or (user identifier, PDN marks, UE local ip address, V-PCRF mark),
Create DRA bindings.
Step 604：V-DRA is returned to H-PCRF and is redirected message, carries the V- that DRA is selected in step 603 in the message
The mark of PCRF.DRA instructions can also be carried in the redirection message, represent that there are DRA in VPLMN.Or in the message
The instruction for needing to delete DRA bindings is carried, represents that H-PCRF needs to send the DRA bindings that message deletes V-DRA.Carry V-PCRF
The redirection message of mark can there are DRA with implicit indication VPLMN.And it carries DRA instructions or needs to delete the instruction of DRA bindings
It can explicitly indicate that there are DRA by VPLMN.
Step 605：H-PCRF is identified according to the V-PCRF that step 604 returns, and TER message, the TER are sent to V-PCRF
The information identical with step 602 message is carried in message.
Step 606：After V-PCRF receives the TER message, TEA (Trigger Establishment are returned to H-PCRF
Response is established in Answer, triggering) message.
Step 607：V-PCRF sends Diameter session establishment request messages to H-PCRF, asks according to the TER message
Establishment strategy is asked to control session (i.e. S9 sessions).V-PCRF can also ask to establish a S9 session (sub- session correspondence simultaneously
The PDN connections of foundation).
The request issued in step 605, which can be carried, in the Diameter session establishments request message establishes session identification
Information, for the H-PCRF message to be notified to be used in establishment step 605 ask the policy control session established.
Step 608：H-PCRF sends Diameter session establishment response messages to V-PCRF.
Step 609：V-PCRF is interacted with the BPCF in BBF access nets, performs S9a session establishment flows.
Hereafter, H-PCRF can carry out strategy by the policy control session (S9 sessions) that step 607 and step 608 are established
Issue, V-PCRF can also carry out policy execution result by it, admission control result and event reporting.
After above-mentioned flow is performed, UE may need to establish new PDN connections.
When UE initiates to establish new PDN connections again, if Home Routed scenes (i.e. P-GW is located at HPLMN), H-
PCRF can be received again by the policy control session message (i.e. IP-CAN session establishments instruction message) sent from P-GW, then H-
PCRF changes established S9 sessions, and V-PCRF is asked with H-PCRF to resettle a S9 session (the sub- session is corresponding newly
The PDN connections of foundation).After receiving above-mentioned request, V-PCRF sends request message to H-PCRF, establishes a S9 session；If
It it is Visited Access scenes (i.e. P-GW is located at VPLMN), V-PCRF can receive the policy control session sent from P-GW
Message (i.e. IP-CAN session establishments instruction message), then V-PCRF changes established S9 sessions, and asks to build again with H-PCRF
Stand a S9 session (the sub- session corresponds to newly-established PDN connections).
Due to being modification S9 sessions, new S9a sessions are not involved setting up or new triggering V-PCRF establishes disappearing for S9 sessions
Breath.In addition, after modification S9 sessions, it may be necessary to perform the flow that S9* sessions are established between V-PCRF and BPCF.Therefore, work as UE
When establishing multiple PDN connections, there are S9 sessions between V-PCRF and H-PCRF, wherein comprising multiple sub- sessions, multiple son meeting
It is actively to be initiated to establish by V-PCRF to talk about some, and also some are to initiate to establish by H-PCRF requests V-PCRF.H- simultaneously
There are S9a sessions between PCRF and V-PCRF.And there are S9* sessions between BPCF and V-PCRF, S9* sessions and S9 sessions are pair
It answers.
Embodiment two
The present embodiment is the flow according to Fig. 6, after the control session of V-PCRF and H-PCRF establishment strategies, due to IP-CAN meetings
During words termination, the flow that DRA is bound in V-DRA is deleted, wherein V-DRA is Redirect modes.Fig. 7 is deletion strategy of the present invention
The flow chart of session DRA bindings is controlled, as shown in fig. 7, the control session DRA bindings of this example deletion strategy specifically include following step
Suddenly：
Step 701：H-PCRF is toggled, needs the policy control session between termination and V-PCRF, i.e. S9 sessions.
The triggering may be policy control session caused by P-GW to H-PCRF sending strategys control session termination message
Ending message, that is, IP-CAN session termination instruction messages carries UE in the policy control session message and is connect from WLAN/H (e) NB
Enter attachment removal or disconnect the instruction information of PDN connections.After H-PCRF receives the policy control session ending message, judgement needs end
S9 sessions between knot and V-PCRF.
Step 702：H-PCRF sends request termination Diameter sessions to V-PCRF, and queued session termination is carried in session
Instruction.
Step 703：V-PCRF returns to request termination Diameter session responses to H-PCRF.
Step 704：V-PCRF sends the request of Diameter session terminations to H-PCRF.
Step 705：H-PCRF returns to Diameter session termination responses to V-PCRF.
Step 706：H-PCRF is indicated according to the DRA carried in the redirection message of step 604 in Fig. 6 or redirection message
Or need to delete the instruction of DRA bindings, judge in VPLMN there are DRA, H-PCRF sends TER message to visited network, deletes
The DRA bindings of the user in V-DRA.The request identical with step 603 is carried in TER message and establishes session label information.It should
Message can be routed to V-DRA.Request can also be carried in TER message and deletes DRA bindings instruction or the instruction of S9 session terminations.
Step 707：V-DRA establishes session label information according to request and judges the session of this user there are one effective
DRA is bound, then deletes the DRA bindings of the user.Or V-DRA deletes DRA bindings instruction according to request or S9 session terminations refer to
Show the DRA bindings for deleting the user.
Step 708：V-DRA is returned to H-PCRF and is redirected message.
Step 709：V-PCRF is interacted with BPCF in BBF access nets, performs the termination flow of S9 sessions.
Embodiment three
Fig. 8 is the framework the present invention is based on Fig. 2, Fig. 3, under roaming scence, in UE attaching process, and V-DRA selections V-
The flow chart of PCRF, wherein DRA are Proxy modes, as shown in figure 8, this method specifically includes following steps：
Step 801：H-PCRF is toggled, needs to establish the policy control session (S9 sessions) between V-PCRF.I.e.
There are no the S9 sessions established for the UE between V-PCRF and H-PCRF..
The triggering may be policy control session message caused by P-GW to H-PCRF sending strategys control conversation message
That is IP-CAN session establishments instruction message carries the finger that UE is accessed by WLAN/H (e) NB in the policy control session message
Show information.After H-PCRF receives the policy control session message, judgement needs to establish the policy control session between V-PCRF,
The admission control of net offer strategy and request BBF access nets is provided will pass through V-PCRF to BBF.
Step 802：H-PCRF sends TER message to visited network, and user identifier, PDN marks are carried in the TER message
This address/IP address of (optional) and UE/H (e) NB local ip address, can also carry in message request establish session instruction (can
Choosing).Auth-Session-State AVP, value NO_STATE_MAINTAINE are carried in message.The message can road first
By to V-DRA；
Request can be further carried in the Diameter session establishments request message and establishes session label information, be used for
The mark of V-PCRF initiation sessions will be used as, in order to which H-PCRF judges whether the session V-PCRF that request is established has sent out
It rises.It can be the location information of UE access BBF access nets or the energy of H-PCRF distribution that session label information is established in the request
Enough marks uniquely distinguished or user identifier or user identifier and the local ip address of PDN marks or UE.
Step 803：V-DRA selects V-PCRF for the user, and preserves correspondence (user identifier, PDN marks, V-
PCRF is identified) or (user identifier, V-PCRF marks) or (user identifier, PDN marks, UE local ip address/H (e) NB local IP
Address, V-PCRF marks), create DRA bindings.
Step 804：V-DRA sends TER message to selected V-PCRF, carries in the TER message and disappears with step 802
Identical information in breath.
Step 805：After V-PCRF receives the TER message, TEA message is returned to V-DRA.
Step 806：After V-DRA receives the Diameter session establishments response TEA message, return to TEA to H-PCRF and disappear
Breath, and DRA instructions are carried in the TEA message, represent that there are DRA in VPLMN.Or carrying needs in the TEA message
The instruction of DRA bindings is deleted, represents that H-PCRF needs to send the DRA bindings that message deletes V-DRA.If V-DRA can be returned
Selected V-PCRF is identified, then V-DRA carries V-PCRF marks in response message.
Step 807：V-PCRF sends Diameter session establishment request messages to H-PCRF, asks according to the TER message
Establishment strategy is asked to control session, that is, establishes S9 sessions.V-PCRF can also ask to establish a S9 session (sub- session pair simultaneously
The PDN connections that should be established).
The request issued in step 804, which can be carried, in the Diameter session establishments request message establishes session identification
Information, for the H-PCRF message to be notified to be used in establishment step 804 ask the policy control session established.
Step 808：H-PCRF sends Diameter session establishment response messages to V-PCRF.
Step 809：V-PCRF is interacted with the BPCF in BBF access nets and is performed S9 session establishment flows.
Hereafter, H-PCRF can carry out issuing for strategy, V-PCRF by the S9 sessions that step 807 and step 808 are established
Can also reporting for policy execution result, admission control result and event be carried out by it.
After above-mentioned flow is performed, UE may need to establish new PDN connections.
When UE initiates to establish new PDN connections again, if Home Routed scenes (i.e. P-GW is located at HPLMN), H-
PCRF can be received again by the policy control session message (i.e. IP-CAN session establishments instruction message) sent from P-GW, then H-
PCRF changes established S9 sessions, and V-PCRF is asked with H-PCRF to resettle a S9 session (the sub- session is corresponding newly
The PDN connections of foundation).After receiving above-mentioned request, V-PCRF sends request message to H-PCRF, establishes a S9 session；If
It it is Visited Access scenes (i.e. P-GW is located at VPLMN), V-PCRF can receive the policy control session sent from P-GW
Message (i.e. IP-CAN session establishments instruction message), then V-PCRF changes established S9 sessions, and asks to build again with H-PCRF
Stand a S9 session (the sub- session corresponds to newly-established PDN connections).
Due to being modification S9 sessions, new S9a sessions are not involved setting up or new triggering V-PCRF establishes disappearing for S9 sessions
Breath.In addition, after modification S9 sessions, it may be necessary to perform the flow that S9* sessions are established between V-PCRF and BPCF.Therefore, work as UE
When establishing multiple PDN connections, there are S9 sessions between V-PCRF and H-PCRF, wherein comprising multiple sub- sessions, multiple son meeting
It is actively to be initiated to establish by V-PCRF to talk about some, and also some are to initiate to establish by H-PCRF requests V-PCRF.H- simultaneously
There are S9a sessions between PCRF and V-PCRF.And there are S9* sessions between BPCF and V-PCRF, S9* sessions and S9 sessions are pair
It answers.
Embodiment 4
The present embodiment is the flow according to Fig. 8, after H-PCRF and V-PCRF establish S9 sessions, due to IP-CAN session terminations
When, the flow of binding information in DRA is deleted, wherein DRA is Proxy modes.Fig. 9 controls binding session for deletion strategy of the present invention
The flow chart of information, as shown in figure 9, the control session DRA bindings of this example deletion strategy specifically include following steps：
Step 901：H-PCRF is toggled, needs the policy control session between termination and V-PCRF, i.e. S9 sessions.
The triggering may be policy control session caused by P-GW to H-PCRF sending strategys control session termination message
Ending message, that is, IP-CAN session terminations indicate, UE is carried in the policy control session message and accesses attachment removal from WLAN or breaks
Open the instruction information of PDN connections.After H-PCRF receives the policy control session ending message, judgement need terminate with V-PCRF it
Between policy control session.
Step 902：H-PCRF sends request termination Diameter sessions to V-PCRF, and queued session termination is carried in session
Instruction.
Step 903：V-PCRF returns to request termination Diameter session responses to H-PCRF.
Step 904：V-PCRF sends the request of Diameter session terminations to H-PCRF.
Step 905：H-PCRF returns to Diameter session termination responses to V-PCRF.
Step 906：DRAs of the H-PCRF in step 806 in Fig. 8 is indicated or the instruction for deleting DRA bindings is needed to sentence
There are DRA, H-PCRF in disconnected VPLMN to send TER message to visited network, deletes the DRA bindings of the user in V-DRA.Message
Session label information is established in the middle carrying request identical with step 803.The message is first routed to V-DRA；In TER message
Request can also be carried and delete DRA bindings instruction or the instruction of S9 session terminations.
Step 907：V-DRA establishes session label information according to request and judges this UE there are an effective DRA to bind,
Delete DRA bindings.Or V-DRA deletes DRA bindings instruction according to request or the DRA of the user is deleted in the instruction of S9 session terminations
Binding.
Step 908：V-DRA returns to TEA message to H-PCRF.
Step 909：V-PCRF is interacted with the BPCF in BBF access nets and is performed S9a session termination flows.
How are interaction and H-PCRF above embodiment described roaming scence message H-PCRF and V-PCRF, V-DRA
Delete the DRA bindings in V-DRA.For the scene there is also DRA in BBF access network domain, flow is similar.Work as PCRF/V-PCRF
When termination and the S9a sessions of BPCF, according to when S9a sessions are established in triggering, the return message in BBF domains judges PCRF/V-PCRF
It whether there is DRA in BBF access network domain.
1) if there are Redirect DRA, redirection message is received in PCRF/V-PCRF, can further be carried in message
DRA is indicated or is needed to delete the instruction of DRA bindings.PCRF/V-PCRF deletes DRA bindings to the request that domain where BPCF is sent
Request is carried in message and deletes DRA bindings instruction or the instruction of S9a session terminations.
2) if DRA instructions are carried there are Proxy DRA, in the TEA message received in PCRF/V-PCRF or need to delete
The instruction of DRA bindings.PCRF/V-PCRF carries request into the message of request deletion DRA bindings that domain where BPCF is sent and deletes
Except DRA binds instruction or the instruction of S9a session terminations.
The embodiment of the present invention provides a kind of strategic server, and as shown in Figure 10, the strategic server includes judging unit
And transmitting element, wherein：
The judging unit is used for, in the policy control session termination established with the second strategic server for user equipment
When, domain whether there is Diameter route agents DRA where judging second strategic server；
The transmitting element is used for, where the judging unit judges second strategic server domain there are during DRA,
Domain where to second strategic server sends message, and the DRA bindings of user equipment described in the DRA are deleted in request.
Wherein, the judging unit judges that domain where second strategic server includes with the presence or absence of DRA：
It is returned according to domain where second strategic server during the foundation for triggering the policy control session
Domain where the second strategic server is stated in message judgement whether there is DRA.
Wherein, the message that domain where second strategic server returns is attached most importance to directed message；Or to carry described the
Domain where two strategic servers indicates there are Diameter route agents DRA or needs to delete the TEA message of DRA bindings or reset
To message.
Wherein, request is carried in the message that the transmitting element is sent and deletes DRA bindings instruction or the strategy control
Session termination instruction processed.
Wherein, the strategic server be ownership place "Policy and Charging Rules Function H-PCRF, second policy service
Device is visited place "Policy and Charging Rules Function V-PCRF.
Wherein, the strategic server be "Policy and Charging Rules Function PCRF/V-PCRF, second strategic server
For broadband policy control function BPCF.
The embodiment of the present invention also provides a kind of system for deleting binding information in Diameter route agents, is taken including strategy
Be engaged in device and DRA, wherein：
The DRA is used for, and weight is returned to the strategic server during the foundation for triggering the policy control session
Directed message；Or it returns and carries the second strategic server place domain there are Diameter route agents DRA instructions or need
It deletes the TEA message of DRA bindings or redirects message.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program
Related hardware is completed, and described program can be stored in computer readable storage medium, such as read-only memory, disk or CD
Deng.Optionally, all or part of step of above-described embodiment can also be realized using one or more integrated circuits.Accordingly
Ground, the form that hardware may be used in each module/unit in above-described embodiment are realized, can also use the shape of software function module
Formula is realized.The present invention is not limited to the combinations of the hardware and software of any particular form.
Claims (13)
- A kind of 1. method for deleting binding information in Diameter route agents, which is characterized in that including：In the policy control session termination that the first strategic server and the second strategic server are established for user equipment, described the Domain whether there is Diameter route agents DRA where one strategic server judges second strategic server, if it does, Message then is sent to domain where second strategic server, the DRA bindings of user equipment described in the DRA are deleted in request.
- 2. the method as described in claim 1, which is characterized in that first strategic server judges second policy service Domain where device includes with the presence or absence of DRA：First strategic server is according to second policy service during the foundation for triggering the policy control session Domain where the second strategic server is stated in the message judgement that domain where device returns whether there is DRA.
- 3. method as claimed in claim 2, which is characterized in that the message that domain where second strategic server returns is attached most importance to Directed message；Or it indicates or needs there are Diameter route agents DRA for domain where carrying second strategic server Response TEA message is established in the triggering for deleting DRA bindings.
- 4. the method as described in claim 1, which is characterized in that first strategic server is to second strategic server Request is carried in the message that place domain is sent and deletes DRA bindings instruction or policy control session termination instruction.
- 5. the method as described in Claims 1-4 is any, which is characterized in that first strategic server is ownership place strategy With charging rule functions H-PCRF, second strategic server is visited place "Policy and Charging Rules Function V-PCRF.
- 6. the method as described in Claims 1-4 is any, which is characterized in that first strategic server is strategy and charging Rule functional PCRF/V-PCRF, second strategic server are broadband policy control function BPCF.
- 7. a kind of strategic server, which is characterized in that the strategic server includes judging unit and transmitting element, wherein：The judging unit is used for, and in the policy control session termination established with the second strategic server for user equipment, is sentenced Domain where disconnected second strategic server whether there is Diameter route agents DRA；The transmitting element is used for, and domain is there are during DRA where the judging unit judges second strategic server, to institute Domain where stating the second strategic server sends message, and the DRA bindings of user equipment described in the DRA are deleted in request.
- 8. strategic server as claimed in claim 7, which is characterized in that the judging unit judges second policy service Domain where device includes with the presence or absence of DRA：The message returned according to domain where second strategic server during the foundation for triggering the policy control session Domain whether there is DRA where the second strategic server is stated in judgement.
- 9. strategic server as claimed in claim 8, which is characterized in that domain returned where second strategic server disappears Cease directed message of attaching most importance to；Or there are Diameter route agents DRA instructions for domain where carrying second strategic server Or need to delete the TEA message of DRA bindings.
- 10. strategic server as claimed in claim 7, which is characterized in that taken in the message that the transmitting element is sent DRA bindings instruction or policy control session termination instruction are deleted in band request.
- 11. the strategic server as described in claim 7 to 10 is any, which is characterized in that the strategic server is ownership place "Policy and Charging Rules Function H-PCRF, second strategic server are visited place "Policy and Charging Rules Function V-PCRF.
- 12. the strategic server as described in claim 7 to 10 is any, which is characterized in that the strategic server for strategy and Charging rule functions PCRF/V-PCRF, second strategic server are broadband policy control function BPCF.
- 13. a kind of system for deleting binding information in Diameter route agents, which is characterized in that including：As claim 7 to The 10 any strategic servers and DRA, wherein：The DRA is used for, and is returned and is redirected to the strategic server during the foundation for triggering the policy control session Message；Or it returns and carries the second strategic server place domain there are Diameter route agents DRA instructions or need to delete Except the TEA message of DRA bindings or redirection message.
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| CN108668269B (en) * | 2017-03-28 | 2022-02-08 | 华为技术有限公司 | Diameter message routing method, routing equipment and system |
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| CN101217383A (en) * | 2008-01-04 | 2008-07-09 | 中兴通讯股份有限公司 | A deletion method of functional association relation of strategy and charging rules |
| CN101552682A (en) * | 2008-04-03 | 2009-10-07 | 华为技术有限公司 | Method and system for controlling policy and charging control information |
| CN101646149A (en) * | 2008-08-07 | 2010-02-10 | 中兴通讯股份有限公司 | Method for deleting session messages in DRA |
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| US8249551B2 (en) * | 2008-06-05 | 2012-08-21 | Bridgewater Systems Corp. | Long-term evolution (LTE) policy control and charging rules function (PCRF) selection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101217383A (en) * | 2008-01-04 | 2008-07-09 | 中兴通讯股份有限公司 | A deletion method of functional association relation of strategy and charging rules |
| CN101552682A (en) * | 2008-04-03 | 2009-10-07 | 华为技术有限公司 | Method and system for controlling policy and charging control information |
| CN101646149A (en) * | 2008-08-07 | 2010-02-10 | 中兴通讯股份有限公司 | Method for deleting session messages in DRA |
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