CN101247335A

CN101247335A - Policy distribution method

Info

Publication number: CN101247335A
Application number: CNA200810007376XA
Authority: CN
Inventors: 成超文
Original assignee: ZTE Corp
Priority date: 2008-03-12
Filing date: 2008-03-12
Publication date: 2008-08-20
Anticipated expiration: 2028-03-12
Also published as: CN101247335B

Abstract

The invention discloses a method for distributing a strategy, which includes that: a transaction flow authentication point transmits a notice message which is used for noticing that an user of a transaction flow authentication anchor point switches from a service access transaction network to a target access transaction network for the transaction flow authentication anchor point, wherein, the notice message carries an identification information of the service access transaction network and the identification information of the target access transaction network, and the identification information of the user; the notice message is received by the transaction flow authentication anchor point, and a station which the user switches from service access transaction network to the target access transaction network is reported for a function entity of an strategy accounting rule, the identification information of the service access transaction network and the identification information of the target access transaction network, and the identification information of the user are transmitted to the function entity of the strategy accounting rule; the function entity of the strategy accounting rule obtains a strategy control accounting rule matched with the user from a user contraction database according to information from the transaction flow authentication anchor point, and the strategy control accounting rule is re-distributed.

Description

Policy distribution method

Technical field

The present invention relates to the communications field, relate more specifically to a kind of policy distribution method.

Background technology

In present WiMAX R1.5 version, mainly come to guarantee for the user provides service quality by policy control charging (Policyand Charging Control is called for short PCC) framework.WiMAX PCC provides two Policy Enforcement Points for the user, be respectively access business network (Access Service Network, abbreviation ASN) policy and charging enforcement function (the ASN-Policy and Charging Enforcement Function in territory, be called for short A-PCEF) entity and connection business network (Connect Service Network, abbreviation CSN) the policy and charging enforcement function in territory (CSN-Policy and Charging Enforcement Function is called for short C-PCEF) entity.

A-PCEF is access business network gateway (ASN GateWay, be called for short AGW) interior Business Stream authentication anchor point (Anchored-Service Flow Authenticator, be called for short A-SFA), PCC decision point policy charging rule function (Policy and Charging RulesFunction, abbreviation PCRF) policy distribution of entity is to carrying out policy and charging enforcement function (ASN-Policy and Charging Enforcement Function in the some ASN, abbreviation A-PCEF) behind the entity, A-SFA by RESV with service quality (the Quality of Service that comprises in this PCC strategy, abbreviation QoS) information is delivered to Business Stream authentication service point (Serving-Service Flow Authenticator, be called for short S-SFA), be responsible for concrete execution by S-SFA.

At user-subscribed database (Subscription Profile Repository, be called for short SPR) in, difference according to access service network, may have different subscription data, so after access service network switched, the PCC framework should be able to be notified the PCC strategy that this switching and renewal are issued to Policy Enforcement Point A-PCEF.

But, as shown in Figure 1, in the scene that access service network switches at present, do not have relevant mechanism to trigger this process of PCC perception, the strategy that PCC decision point PCRF can not upgrade in time and issue.

Summary of the invention

One or more problems in view of the above the invention provides a kind of policy distribution method, to solve the assurance problem of QoS of customer under the ASN handoff scenario.

Policy distribution method according to the embodiment of the invention, may further comprise the steps: Business Stream authentication service point sends to Business Stream authentication anchor point and is used for the notification message that informing business stream authentication anchor point user is being switched to the target accessing business network from the service accessing business network, wherein, notification message carries identification information, the identification information of target accessing business network and user's the identification information of service accessing business network; After Business Stream authentication anchor point receives notification message, situation about switching to the target accessing business network to policy charging rule functional entity report user from the service accessing business network, and will serve the identification information of accessing business network, the identification information of target accessing business network and user's identification information and be sent to policy charging rule functional entity; And policy charging rule functional entity obtains policy control charging regulation with user's coupling according to the identification information of identification information, the target accessing business network of service accessing business network and user's identification information from the signatory storehouse of user, and distributing policy control charging regulation again.

Wherein, at Business Stream authentication service point before Business Stream authentication anchor point sends a notification message, further comprising the steps of: policy charging rule functional entity definition service accessing business network changes event trigger, and will serve accessing business network and change event trigger and be issued to Business Stream and authenticate anchor point; Business Stream authentication anchor point build-in services accessing business network thereon changes event trigger.

Wherein, policy charging rule functional entity will be served accessing business network change event trigger and be issued to Business Stream authentication anchor point by the Gx interface.Business Stream authentication anchor point is sent to policy charging rule functional entity by the Gx interface with identification information, the identification information of target accessing business network and user's the identification information of serving accessing business network.Business Stream authentication anchor point changes event trigger by the service accessing business network, reports the situation that the user is being switched to the target accessing business network from the service accessing business network to policy charging rule functional entity.Wherein, the policy distribution method according to the embodiment of the invention is applicable in the WiMAX system.

Indulge the above, the invention provides a kind of policy distribution method under the scene that user's accessing business network switches, thereby the QoS of customer that has solved under the ASN handoff scenario guarantees problem.

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 a WiMAX PCC Organization Chart of the prior art;

Fig. 2 is the flow chart according to the policy distribution method of the embodiment of the invention; And

Fig. 3 is the user's access business network handoff scenario figure according to the embodiment of the invention.

Embodiment

Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.

Fig. 2 is the flow chart according to the policy distribution method of the embodiment of the invention.As shown in Figure 2, this policy distribution method may further comprise the steps: S202, Business Stream authentication service point sends to Business Stream authentication anchor point and is used for the notification message that informing business stream authentication anchor point user is being switched to the target accessing business network from the service accessing business network, wherein, notification message carries identification information, the identification information of target accessing business network and user's the identification information of service accessing business network; S204, after Business Stream authentication anchor point receives notification message, situation about switching to the target accessing business network to policy charging rule functional entity report user from the service accessing business network, and will serve the identification information of accessing business network, the identification information of target accessing business network and user's identification information and be sent to policy charging rule functional entity; And S206, policy charging rule functional entity obtains the policy control charging regulation that mates with the user according to the identification information of service accessing business network, the identification information of target accessing business network and user's identification information from the signatory storehouse of user, and distributing policy is controlled charging regulation again.

Fig. 3 is the user's access business network handoff scenario figure according to the embodiment of the invention.As shown in Figure 3, in user's access business network handoff scenario, relate to following network element: mobile radio station (MS), base station (BS), accessing business network, services data path function (Serving-DPF) entity, grappling data path functions/Foreign Agent (Anchor-DPF/FA) entity, Internet Service Provider (NSP) and local agent (HA) according to the embodiment of the invention.

As shown in Figure 3, the user is switching to the process of accessing business network ASN1 from accessing business network ASN2, at first is the switching of Layer 2 data passage, i.e. the switching of ASN network.

Because this process has just increased new Serving-DPF as forwarding on the Layer 2 data channel path, original A-SFA of subscriber equipment (UE) (A-PCEF) and S-SFA position all do not have to upgrade, so PCC can't perceive this process and trigger policy upgrades.The new Layer 2 data passage of user is set up between the Anchor-DPF that occurs in interior service flow management function of ASN1 BS and ASN2, and Anchor-DPF can notify this process; Simultaneously because Anchor-DPF also is user's S-SFA, so the switching that S-SFA can real-time perception user ASN.

Event trigger is a kind of event trigger mechanism that is detected and reported PCRF renewal distributing policy by PCEF of PCC mechanism definition.Event triggered implement body reciprocal process is as follows: at first, PCRF defines the IP that PCEF should report as required and connects access network carrying dependent event, and by the Gx interface trigger of these incidents is passed to PCEF; PCEF installs these triggers, and when the trigger dependent event takes place it is reported to PCRF to trigger the renewal of relevant PCC strategy.

By last surface analysis, as follows according to the specific embodiments of the policy distribution method of the embodiment of the invention:

PCRF definition service accessing business network changes (Serving-ASN change) event trigger, promptly requires A-PCEF in micro-wave access to global intercommunication (WiMAX) system when service ASN (Serving-ASN) changes, with this reporting events PCRF;

PCRF is issued to WiMAX A-PCEF by the Gx interface with this event trigger, and A-PCEF installs this event trigger;

In the user access network handoff procedure, Anchor-DPF receives the data channel register requirement of service flow management function in the target ASN, perceive this switching, S-SFA informs A-SFA by message with this handoff procedure, the identification information (IP address and/or two layers of sign) etc. that this notification message must comprise the service ASN sign before switching and switch back service ASN sign and this user;

After A-PCEF receives this notification message, perceive Serving-ASN change incident and take place, this event trigger and relevant information (the service ASN before for example switching identifies and switching back service ASN sign) are passed through the Gx interface report to PCRF/PDF;

After PCRF receives the request that comprises Serving-ASN change event trigger that PCEF reports, to SPR request user related information; PCRF issues new PCC strategy again according to the user related information among the SPR that receives.

Above scheme also is applicable to the switching of user between a plurality of access network provider.Corresponding diagram 1, promptly ASN1 and ASN2 are respectively the situation of NAP1 and NAP2.

The above is embodiments of the invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.

Claims

1. a policy distribution method is characterized in that, may further comprise the steps:

Business Stream authentication service point sends to Business Stream authentication anchor point and is used to notify described Business Stream authentication anchor point user from the notification message of service accessing business network to the switching of target accessing business network, wherein, described notification message carries the identification information of the identification information of described service accessing business network, described target accessing business network and described user's identification information;

After described Business Stream authentication anchor point receives described notification message, report the situation that described user is being switched to described target accessing business network from described service accessing business network to policy charging rule functional entity, and the identification information of the identification information of described service accessing business network, described target accessing business network and described user's identification information are sent to described policy charging rule functional entity; And

Described policy charging rule functional entity obtains the policy control charging regulation that mates with described user according to the identification information of the identification information of described service accessing business network, described target accessing business network and described user's identification information from the signatory storehouse of user, and issues described policy control charging regulation again.

2. policy distribution method according to claim 1 is characterized in that, and is before described Business Stream authentication anchor point sends described notification message, further comprising the steps of at described Business Stream authentication service point:

Described policy charging rule functional entity definition service accessing business network changes event trigger, and described service accessing business network change event trigger is issued to described Business Stream authentication anchor point;

Described Business Stream authentication anchor point is installed described service accessing business network thereon and is changed event trigger.

3. policy distribution method according to claim 2 is characterized in that, described policy charging rule functional entity changes event trigger with described service accessing business network and is issued to described Business Stream authentication anchor point by the Gx interface.

4. policy distribution method according to claim 2, it is characterized in that, described Business Stream authentication anchor point is sent to described policy charging rule functional entity by the Gx interface with the identification information of the identification information of described service accessing business network, described target accessing business network and described user's identification information.

5. policy distribution method according to claim 4, it is characterized in that, described Business Stream authentication anchor point changes event trigger by described service accessing business network, reports the situation that described user is being switched to described target accessing business network from described service accessing business network to described policy charging rule functional entity.

6. according to each described policy distribution method in the claim 1 to 5, it is characterized in that described method is applicable in the WiMAX system.