WO2009024049A1

WO2009024049A1 - A method, communication system and corresponding device for controlling peer-to-peer service

Info

Publication number: WO2009024049A1
Application number: PCT/CN2008/071872
Authority: WO
Inventors: Shibi Huang; Shiyong Tan; Weihua Wei; Yan Li; Jinwen Di; Feng Chen; Zhipeng Hou
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-08-15
Filing date: 2008-08-05
Publication date: 2009-02-26
Also published as: CN101370253A; CN101370253B

Abstract

A method, communication system and corresponding device for controlling peer-to-peer service in PCC are disclosed. Said method includes following steps: policy and charging enforcement function entity requests policy and charging rules function entity for controlling policy information of peer-to-peer service; policy and charging rules function entity generates controlling policy information of peer-to-peer service according to said request and sends said controlling policy information to policy and charging enforcement function entity; policy and charging enforcement function entity controls peer-to-peer service according to said controlling policy.

Description

Point-to-point service implementation method and communication system and related equipment

This application claims priority to Chinese Patent Application No. 200710138094.9, entitled "A Peer-to-Peer Business Implementation Method and Communication System and Related Equipment", filed on August 15, 2007, the entire contents of which are hereby incorporated by reference. Combined in this application.

Technical field

The present invention relates to the field of communications, and in particular, to a point-to-point service implementation method, a communication system, and related equipment.

Background technique

The existing Policy and Charging Control (PCC) architecture is primarily intended for client/server applications.

After the user establishes a session with the application function entity, the application function entity sends the application session information to the Policy and Charging Rule Function (PCRF), and the Policy and Charging Execution Function (PCEF) The bearer-related information is sent to the PCRF. The PCRF derives the PCC charging and control policy according to the received application session information, bearer-related information, user subscription information, and operator-defined policy information, and sends the rule to the PCEF for execution.

The PCC strategies in the prior art mainly include:

1. Gating information: Used to control whether traffic data is allowed to pass.

2. QoS control information: Used to control the QoS level and bandwidth of the bearer or data stream.

3. Billing information: Used to control specific billing methods and rates.

However, with the development of the network technology, the Peer-to-Peer (P2P) service is developed very rapidly, and the PCC policy information included in the prior art does not include the parameters required for the P2P service, and is not suitable for the P2P service. Therefore, the prior art cannot implement P2P services in the PCC.

Summary of the invention

The embodiments of the present invention provide a point-to-point service implementation method, a communication system, and related equipment, which can implement P2P services in a PCC.

The method for implementing the point-to-point service provided by the embodiment of the present invention includes: the policy and charging execution function entity sends a point-to-point service policy control information acquisition request to the policy and charging rule function entity; and the policy and charging execution function entity receives the policy and charging rule. Functional entity according to the point-to-point business policy control Point-to-point service policy control information generated by the information acquisition request; the policy and charging execution function entity controls the point-to-point service according to the point-to-point service policy control information.

The communication system provided by the embodiment of the present invention includes: a policy and charging execution function entity, configured to receive a session establishment request of an interconnected access network sent by a user, request to obtain point-to-point service policy control information, and receive point-to-point service policy control information, according to The point-to-point service policy control information controls the point-to-point service; the policy and charging rule function entity is configured to receive the point-to-point service policy control information acquisition request sent by the policy and charging execution function entity, according to the user identification information and the bearer in the request The related information is sent to the subscription information database to query the corresponding subscription information, and the corresponding point-to-point service policy control information is generated according to the subscription information and the preset operator policy, and the queried point-to-point service policy control information is sent to the policy and charging execution function entity. The subscription information base is configured to query the corresponding subscription information according to the request of the policy and charging rule function entity, and feed back the queried subscription information to the policy and charging rule function entity.

The policy and charging execution function entity provided by the embodiment of the present invention includes: a user request receiving unit, configured to receive a connection establishment access session establishment request sent by a user; and a policy requesting unit, configured to connect according to the received interconnection The network session establishment request requests the policy and charging rule function entity to obtain the peer-to-peer service policy control information; the policy receiving unit is configured to receive the peer-to-peer service policy control information fed back by the policy and charging rule function entity; and the service control unit is configured to receive according to the Point-to-point business policy control information to control point-to-point services.

The policy and charging rule function entity provided by the embodiment of the present invention includes: a policy request receiving unit, configured to receive a point-to-point service policy control information acquisition request sent by a policy and charging execution function entity; and a policy query unit, configured to receive the The point-to-point service policy control information acquisition request sends a query request to the subscription information base; the query policy receiving unit is configured to receive corresponding subscription information from the subscription information base; the policy generation unit is configured to use the received subscription information and the preset operation The quotient strategy generates corresponding point-to-point service policy control information, and the policy feedback unit is configured to send the point-to-point service policy control information to the policy and charging execution function entity.

As can be seen from the above technical solutions, the embodiments of the present invention have the following advantages:

In the embodiment of the present invention, the PCEF requests the PCRF to obtain the P2P service policy control information, and the PCRF generates the corresponding service policy control information according to the request of the PCEF, and feeds back the P2P service policy control information to the PCEF, so the PCEF can obtain the P2P service policy according to the obtained P2P service policy. Control information The P2P service requested by the user is controlled, and the P2P service can be implemented under the PCC.

DRAWINGS

1 is a flowchart of a general implementation manner of a P2P service implementation method according to an embodiment of the present invention;

2 is a signaling flowchart of a first embodiment of a P2P service implementation method according to an embodiment of the present invention; FIG. 3 is a signaling flowchart of a second embodiment of a P2P service implementation method according to an embodiment of the present invention; P2P service implementation method third embodiment signaling flow chart; FIG. 5 is a schematic diagram of an embodiment of a communication system according to an embodiment of the present invention;

6 is a schematic diagram of an embodiment of a PCEF according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of an embodiment of a PCRF according to an embodiment of the present invention.

detailed description

The embodiments of the present invention provide a point-to-point service implementation method, a communication system, and related equipment, which are used to implement P2P services in a PCC.

In the embodiment of the present invention, when the user requests to establish an Internet Protocol-Connectivity Access Network (IP-CAN) session, the PCEF requests the PCRF to obtain the P2P service policy control information, and the PCRF sends the information to the subscription information base (SPR, Subscription). The P2P service policy control information is queried, and the P2P service policy control information is fed back to the PCEF. The PCEF controls the P2P service requested by the user according to the obtained P2P service policy control information, so that the P2P service can be implemented under the PCC. .

Referring to FIG. 1, a general implementation manner of a P2P service implementation method in an embodiment of the present invention includes:

101. Request to obtain P2P service policy control information.

In this embodiment, the PCEF requests the PCRF to obtain P2P service policy control information, and the requested P2P service policy control information includes at least one of the following information:

P2P application maximum bandwidth limit information, P2P application maximum connection limit information and P2P application gate information.

102. Generate P2P service policy control information.

After receiving the PCEF request, the PCRF requests the corresponding subscription information from the SPR. After the SPR queries the corresponding subscription information, the SPR feeds back the information to the PCRF. The PCRF generates P2P service policy control information according to the received subscription information.

103. Control P2P services according to P2P service policy control information. The PCEF controls the P2P service requested by the user according to the received P2P service policy control information. If the P2P service policy control information includes the total gating of a P2P application, the PCEF forwards or discards all the "P2P applications" according to the gating policy; if the user is restricted, the P2P service can only be used in a certain network segment. If the P2P service policy control information includes the Qos bandwidth control policy, the PCEF can perform the process of forwarding or discarding the data of a certain network segment or the IP quintuple.

Update operations of IP-CAN sessions, such as Qos parameter updates for IP-CAN sessions, or establishment or deletion of IP-CAN bearers;

If the P2P service policy control information includes the maximum connection number control policy, the PCEF can control the maximum number of connections of the user P2P application according to the control policy.

In this embodiment, the PCEF requests the PCRF to obtain the P2P service policy control information, and the PCRF feeds back the P2P service policy control information to the PCEF after the query, so the PCEF can control the P2P service requested by the user according to the obtained P2P service policy control information. P2P services can be implemented under PCC.

The following describes the embodiments of the present invention in detail according to the specific type of P2P service policy control information:

1. P2P service policy control information includes maximum bandwidth limit information:

Referring to FIG. 2, a first embodiment of a method for implementing a P2P service in an embodiment of the present invention includes:

201. The user terminal sends an IP-CAN session establishment request to the PCEF.

202. The PCEF sends a Diameter CCR message to the PCRF.

The PCEF sends a Diameter CCR request message to the PCRF to request P2P service policy control information. In this embodiment, the Diameter CCR request message carries bearer related information and user ID information.

203. Query the subscription information;

The PCRF queries the SPR for the corresponding subscription information according to the bearer related information and the user ID information in the Diameter CCR request message.

In this embodiment, the parameters set by the user when the user signs the contract are saved in the SPR, and the control rules of the P2P application program may be defined in the subscription information, and used as the PCRF to generate the P2P service policy control information.

It can be understood that the operator can define the relevant control policy in the subscription information of the user, and can also configure the control policy on the PCRF. 204. The PCRF sends a Diameter CCA message to the PCEF.

The PCRF generates P2P service policy control information according to the control policy and the subscription information defined by the operator, and then uses the Diameter CCA message to carry the P2P service policy control information to the PCEF through the Gx interface.

In this embodiment, the P2P service policy control information includes information such as whether to allow P2P services, maximum bandwidth limitation, and maximum connection limit.

At the same time, when the service policy control information includes the P2P service gating information, the following parameters may be used as the filtering parameters: IP quintuple information (including mask), application protocol type, extended 7-layer parsing (URL) information, and The message detects the feature character and other information, that is, the above parameters are used to determine whether the user is allowed to use the P2P service, and if not, the data packet transmitted by the user is filtered.

The PCRF sends the P2P service policy control information to the PCEF through a Diameter CCA or RAR message.

In order to implement the P2P control strategy, a new cell needs to be defined:

P2P-Rule-Definition: := < AVP Header: xxxx >

[P2P-Type]

[P2P-Control]

[MAX-Connections]

The P2P-Type AVP is an enumerated type (Enumerated) that represents a specific P2P application type and can be valued as follows:

BT ( 0 ) indicates a BitTorrent application;

Skype ( 1 ) indicates the Skype application;

MSN ( 2 ) indicates an MSN application;

QQ (3) indicates QQ application;

The P2P-Control AVP is an enumerated type (Enumerated). It indicates whether the user is allowed to use a specific P2P application. The value can be as follows:

ENABLE ( 0 ) indicates that the user is allowed to use the P2P application;

DISABLE ( 0 ) means that the user is prohibited from using the P2P application;

The MAX-Connections AVP represents the maximum number of P2P connections that the PCRF allocates for the user's P2P application. The P2P-Rule-Definition AVP can be placed in the existing Charging-Rule-Definition AVP: Charging-Rule-Definition ::= < AVP Header: 1003 >

Using the above definitions, gating, maximum bandwidth control, and maximum number of connections for user P2P applications can be achieved.

If you allow or prohibit users from using a P2P application, you can use P2P-Type to indicate the specific P2P type in P2P-Rule-Definition, and then use P2P-Control to indicate whether the user is allowed to use a certain P2P application.

If the user is allowed to use some P2P applications (for example, restricting users to use P2P services only in a certain network segment), use the Flow-Description in the existing Charging-Rule-Definition AVP (where the IP address can have a mask) and Flow -Status limits the user's P2P application.

If you need to implement the maximum bandwidth limit, use the QoS-Information AVP in the existing Charging-Rule-Definition to give the maximum bandwidth that the user (upstream and downstream) can use. The PCEF detects the PosP application and implements the Qos bandwidth control.

If you need to achieve the maximum number of connections, use MAX-Connections to give users the ability to The maximum number of P2P connections established. PCEF detects whether the user is a P2P application and controls the maximum number of connections.

Specifically, in this embodiment, only the P2P service policy control information includes the maximum bandwidth limitation information, that is, the P2P service policy control information includes a P2P-Rule-Definition AVP, where the P2P-Type value is BT (0), indicating For BitTorrent applications; QoS-Information contains a maximum bandwidth of 2M allocated for BT applications.

205. Feedback IP-CAN session establishment response.

The PCEF feeds back the IP-CAN session establishment response to the user terminal, and allocates the corresponding bandwidth resource to the P2P service of the user according to the maximum bandwidth limitation information of the P2P application. In this embodiment, the user allocates 2M bandwidth to the P2P service of the user.

2. The P2P service policy control information includes the maximum number of connections:

Referring to FIG. 3, a second embodiment of a P2P service implementation method in the embodiment of the present invention includes:

301. An IP-CAN session is established;

302. The user terminal sends an IP-CAN bearer setup request.

In order to be able to use the P2P service, the user terminal sends an IP-CAN bearer setup request to the PCEF.

303. The PCEF sends a Diameter CCR message to the PCRF.

304, query contract information;

It can be understood that the operator can define the relevant control policy in the user's subscription information, and can also configure the control policy on the PCRF.

305. The PCRF sends a Diameter CCA message to the PCEF.

The PCRF generates a P2P service policy control signal according to the operator-defined control policy and subscription information. Then, through the Gx interface, the Diameter CCA message is used to carry the P2P service policy control information feedback to the PCEF.

At the same time, the filtering rules in the policy may include information such as IP quintuple information (including mask), application protocol type, extended layer 7 parsing (URL) information, and message detection feature characters.

In order to implement the P2P control policy, a new cell needs to be defined. The specific format is the same as that in the previous embodiment, and is not described here.

Specifically, in this embodiment, only the P2P service policy control information includes the maximum connection number restriction information, that is, the P2P service policy control information includes a P2P-Rule-Definition AVP, where the P2P-Type value is BT (0). Expressed as a BitTorrent application; MAX-Connections takes a value of 5, indicating that the maximum number of connections for the user BT is 5.

306. Feedback The IP-CAN bearer establishes a response.

The PCEF feeds back the IP-CAN bearer setup response to the user terminal.

When a user uses a P2P service, the PCEF limits the maximum number of P2P services to be connected to the maximum number of P2P services.

3. P2P service policy control information includes gating information:

Referring to FIG. 4, a third embodiment of a P2P service implementation method in the embodiment of the present invention includes:

401, IP-CAN session establishment;

402. The user terminal sends an IP-CAN bearer setup request.

403. The PCEF sends a Diameter CCR message to the PCRF.

404. Query the subscription information; The PCRF queries the SPR for the corresponding subscription information according to the bearer related information and the user ID information in the Diameter CCR request message.

405. The PCRF sends a Diameter CCA message to the PCEF.

The PCRF sends the P2P service policy control information to the Diameter CCA or RAR message.

PCEF.

Specifically, in this embodiment, only the P2P service policy control information includes the gating information, that is, the P2P service policy control information includes a P2P-Rule-Definition AVP, where the P2P-Type value is BT (0), indicating BitTorrent. Application; P2P-Control takes the value DISABLE, which means that the BT application is disabled.

406. Feedback IP-CAN bearer setup response;

The PCEF feeds back the IP-CAN bearer setup response to the user terminal.

407. The user requests to perform a P2P service.

408. The PCEF processes the P2P service requested by the user according to the received gating information. When the user uses the P2P service, the PCEF determines whether the user is allowed to use the P2P service according to the P2P application gating information. For example, in this embodiment, the user is not allowed to use the BitTorrent application, and if the P2P service requested by the user is a BitTorrent application, PCEF prohibits BitTorrent applications The message passed.

The following describes an embodiment of the device in the embodiment of the present invention. Referring to FIG. 5, the embodiment of the communication system in the embodiment of the present invention includes:

The user terminal 501 is configured to send a connection establishment access session establishment request.

The policy and charging execution function entity 502 is configured to receive a session establishment request of the interconnected access network sent by the user, request to obtain point-to-point service policy control information, receive point-to-point service policy control information, and control the point-to-point service according to the point-to-point service policy control information. ;

The policy and charging rule function entity 503 is configured to receive the point-to-point service policy control information acquisition request sent by the policy and charging execution function entity 502, and query the subscription information base 504 for the corresponding subscription according to the user identification information and the bearer related information in the request. And generating, according to the subscription information and the preset operator policy, the corresponding peer-to-peer service policy control information, and sending the queried peer-to-peer service policy control information to the policy and charging execution function entity 502;

The subscription information base 504 is configured to query the corresponding subscription information according to the request of the policy and charging rule function entity 503, and feed back the queried subscription information to the policy and charging rule function entity 503.

Referring to FIG. 6, the PCEF embodiment in the embodiment of the present invention includes:

The user request receiving unit 601 is configured to receive a session establishment request of the interconnected access network sent by the user;

The policy requesting unit 602 is configured to request, from the policy and charging rule function entity, the peer-to-peer service policy control information according to the received interconnected access network session establishment request;

a policy receiving unit 603, configured to receive peer-to-peer service policy control information fed back by the policy and charging rule function entity;

The service control unit 604 is configured to control the point-to-point service according to the received point-to-point service policy control information.

Referring to FIG. 7, the embodiment of the PCRF in the embodiment of the present invention includes:

The policy request receiving unit 701 is configured to receive a point-to-point service policy control information acquisition request sent by the policy and charging execution function entity;

The policy query unit 702 is configured to send a query request to the subscription information base according to the received point-to-point service policy control information acquisition request;

The query policy receiving unit 703 is configured to receive corresponding subscription information from the subscription information base; The policy generating unit 704 is configured to generate corresponding point-to-point service policy control information according to the received subscription information and the preset operator policy.

The policy feedback unit 705 is configured to send the point-to-point service policy control information to the policy and charging enforcement function entity.

In the embodiment of the present invention, the PCEF requests the PCRF to obtain the P2P service policy control information,

The PCRF generates the corresponding service policy control information according to the request of the PCEF, and feeds back the P2P service policy control information to the PCEF. Therefore, the PCEF can control the P2P service requested by the user according to the obtained P2P service policy control information, and can be implemented under the PCC. P2P business.

It will be understood by those skilled in the art that all or part of the steps of implementing the foregoing embodiments may be performed by a program to instruct related hardware, and the program may be stored in a computer readable storage medium. , including the following steps:

The policy and charging execution function entity sends a point-to-point service policy control information acquisition request to the policy and charging rule function entity;

The policy and charging execution function entity receives the point-to-point service policy control information generated by the policy and charging rule function entity according to the point-to-point service policy control information obtaining request;

The policy and charging enforcement function entity controls the point-to-point service according to the point-to-point service policy control information.

The above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

The foregoing describes a point-to-point service implementation method, a communication system, and related equipment provided by the present invention. For those skilled in the art, according to the idea of the embodiment of the present invention, there will be a specific implementation manner and application scope. The details of the description are not to be construed as limiting the invention.

Claims

Rights request

A method for implementing a peer-to-peer service, comprising:

2. The method according to claim 1, wherein the point-to-point service policy control information includes at least one of the following information:

Peer-to-peer application maximum bandwidth limit information, peer-to-peer application maximum connection limit information, and peer-to-peer application gating information.

The method according to claim 2, wherein the step of the policy and charging execution function entity sending a peer-to-peer service policy control information acquisition request to the policy and charging rule function entity comprises:

The policy and charging execution function entity receives the interconnection connectivity network session establishment request sent by the user terminal.

The method according to claim 2, after the policy and charging execution function entity establishes an interconnection and access network session with the user terminal, and sends a point-to-point service policy to the policy and charging rule function entity. The steps to control the information acquisition request include:

The policy and charging execution function actually receives the interconnection and access network bearer establishment request sent by the user terminal.

The method according to claim 3 or 4, wherein the step of the policy and charging execution function entity sending a point-to-point service policy control information acquisition request to the policy and charging rule function entity comprises:

The policy and charging execution function entity sends a Diameter CCR message to the policy and charging rule function entity, where the Diameter CCR message includes the relevant information for requesting the point-to-point service policy control information and the user identification information;

The step of generating, by the policy and charging rule function entity, the corresponding point-to-point service policy control information according to the point-to-point service policy control information obtaining request includes: The policy and charging rule function entity sends a subscription information acquisition request to the subscription information base according to the received user identification information;

The subscription information base feeds back the corresponding contract information to the policy and charging rule function entity according to the received subscription information acquisition request;

The policy and charging rule function entity generates corresponding point-to-point service policy control information according to the received subscription information and the preset operator policy.

The method according to claim 5, wherein the step of the policy and charging rule function entity transmitting the obtained point-to-point service policy control information to the policy and charging execution function entity comprises:

The policy and charging rule function entity sends a Diameter CCA message containing the peer-to-peer service policy control information to the policy and charging enforcement function entity through the Gx interface.

The method according to claim 3 or 4, wherein the step of controlling the point-to-point service according to the point-to-point service policy control information by the policy and charging execution function entity comprises: receiving the policy and charging execution function entity Point-to-point business policy control information to obtain maximum bandwidth limitation information of the peer-to-peer application;

Allocating corresponding bandwidth resources to the user's point-to-point service according to the point-to-point application maximum bandwidth limitation information.

The method according to claim 4, wherein the step of controlling the point-to-point service by the policy and charging execution function entity according to the point-to-point service policy control information comprises:

The policy and charging execution function entity obtains the point-to-point application maximum connection limit information from the received peer-to-peer service policy control information;

When the user uses the peer-to-peer service, the policy and charging execution function entity limits the maximum number of connections of the peer-to-peer service according to the peer-to-peer application maximum connection number restriction information.

The policy and charging execution function entity obtains point-to-point application gating information from the received peer-to-peer service policy control information;

When the user requests to use the peer-to-peer service, the policy and charging execution function entity determines, according to the peer-to-peer application gating information, whether the user is allowed to use the peer-to-peer service, if the location is allowed to be used. The point-to-point service is allowed to pass the packet of the point-to-point service.

10. A communication system, comprising:

The policy and charging execution function entity is configured to receive a session establishment request of the interconnected access network sent by the user, request to obtain point-to-point service policy control information, receive point-to-point service policy control information, and control the point-to-point service according to the point-to-point service policy control information;

The policy and charging rule function entity is configured to receive a point-to-point service policy control information acquisition request sent by the policy and charging execution function entity, and query the subscription information database for the corresponding subscription information according to the user identification information and the bearer related information in the request. And generating corresponding point-to-point service policy control information according to the subscription information and the preset operator policy, and sending the queried peer-to-peer service policy control information to the policy and charging execution function entity;

The subscription information base is configured to query the corresponding subscription information according to the request of the policy and charging rule function entity, and feed back the queried subscription information to the policy and charging rule function entity.

11. A policy and charging execution function entity, comprising:

a user request receiving unit, configured to receive a peer connectivity access network session establishment request sent by the user, and a policy requesting unit, configured to request, from the policy and charging rule function entity, the point-to-point service according to the received interconnection connectivity access network session establishment request Policy control information;

a policy receiving unit, configured to receive point-to-point service policy control information fed back by the policy and charging rule function entity;

The service control unit is configured to control the point-to-point service according to the received point-to-point service policy control information.

12. A policy and charging rule function entity, comprising:

a policy request receiving unit, configured to receive a point-to-point service policy control information acquisition request sent by the policy and charging execution function entity;

a policy query unit, configured to send a query request to the subscription information base according to the received peer-to-peer business policy control information acquisition request;

a query policy receiving unit, configured to receive corresponding subscription information from the subscription information base;

a policy generating unit, configured to generate corresponding point-to-point service policy control information according to the received subscription information and the preset operator policy;

And a policy feedback unit, configured to send the point-to-point service policy control information to the policy and charging execution function entity.