WO2009024056A1

WO2009024056A1 - Method, system and device of expanding policy and charging control rule

Info

Publication number: WO2009024056A1
Application number: PCT/CN2008/071961
Authority: WO
Inventors: Shibi Huang; Peng Zhao; Yuxin Mao; Shiyong Tan; Weihua Wei; Yan Li
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-08-17
Filing date: 2008-08-12
Publication date: 2009-02-26
Also published as: CN101369917B; CN101369917A

Abstract

A method of an expanding policy and charging control rule is disclosed, including: A policy control and charging rule function (PCRF) generating a policy and charging control rule which comprising an expanding 7 layers resolving filtering rule and sending to a policy and charging enforcement function (PCEF) performing. A system of an expanding policy and charging control rule including the PCRF and the PCEF is disclosed, and the PCRF is also disclosed.

Description

Method, system and device for expanding policy and charging control rules

The present invention relates to communication technologies, and in particular, to a method, system and apparatus for extending policies and charging control rules.

Background technique

The telecommunication network is an operational network. Therefore, the resources used in the network and the resources used by the network must be controlled in a timely, accurate and comprehensive manner. Policy and Charging Control (PCC) is an important part of it. one.

In the PCC system, the Policy Control and Charging Rules Function (PCRF) is used to limit the access of the user equipment (UE, User Equipment) to the network, the policy formulated by the operator, and the The user subscription information obtained by the SPR (Subscription Profile Repository) and the service information currently being obtained by the user from the AF determine the corresponding policy and charging control rules, and issue the policy and charging control rules to the user. PCEF is executed.

The Policy and Charging Enforcement Function (PCEF) is used to perform the policy that is sent or specified by the PCRF, that is, according to the filtering rules in the policy and charging control rules sent by the PCRF, and the service data flow. Probing, and then performing the policy and charging control established by the PCRF for these service data streams.

The interface between the PCRF and the PCEF is a Gx reference point, and the PCRF can dynamically control the policy and charging control rules executed by the PCEF through the reference point.

There are two main policy and charging control rules in the existing PCC architecture: dynamic policy and charging control rules and predefined policy and charging control rules. The dynamic policy and the charging control rule are generated by the PCRF according to the user subscription information, the application layer service related information, the bearer related information, and the operator defined policy information, and are sent to the PCEF, and the policy and charging control rules executed by the PCEF are performed; The predefined policy and charging control rules are mainly pre-configured on the PCEF. They are also divided into two types, one is Predefined on the PCEF, but the PCRF does not know the existence of the rule. When the predefined rule is executed, the PCEF directly executes the information for the user; the other is configured on the PCEF, but the information about the rule is saved on the PCRF. And such rules are activated by the PCRF. The filtering rule information in the dynamic policy and charging control rule is mainly an IP 5 tuple, including source and destination IP addresses, source and destination port numbers, and protocol numbers; and filtering policy information in predefined policies and charging control rules. In addition to including IP 5 tuple information, it may also include extended 7-layer parsing filter rule information, such as a Uniform Resource Locator (URL).

In the process of implementing the present invention, the inventors have found that the prior art has the following problems: The Gx interface cannot transmit a policy and a charging control rule including extended layer 7 parsing filter rule information.

Summary of the invention

An embodiment of the present invention provides a method for extending a policy charging control rule, so that a policy including a layer 7 parsing filtering rule information and a charging control rule are transmitted between a PCEF and a PCRF.

The embodiment of the invention further provides a system for expanding the policy charging control rule, so that the policy including the extended layer 7 parsing filtering rule information and the charging control rule are implemented between the PCEF and the PCRF.

The embodiment of the invention further provides a PCRF, so that the transmission of the policy and the charging control rule including the extended layer 7 parsing filter rule information is implemented between the PCEF and the PCRF.

To achieve the above objective, the technical solution of the embodiment of the present invention is implemented as follows:

A method for extending a policy and charging control rules, including:

The policy control and charging rule function device PCRF generates a policy and charging control rule including extended layer 7 parsing filter rule information, and sends it to the policy and charging execution function device PCEF for execution.

A system for extending policy and charging control rules, including PCRF and PCEF,

The PCRF is configured to generate a policy and a charging control rule that includes extended layer 7 parsing filter rule information, and send the same.

The PCEF is configured to execute a policy and a charging control rule that includes the extended layer 7 parsing filtering rule information received from the PCRF. A PCRF, including a rule generation module and a sending module,

The rule generating module is configured to generate a policy and a charging control rule that include extended layer 7 parsing filtering rule information;

The sending module is configured to send the policy and the charging control rule that are generated by the rule generating module and include the extended layer 7 parsing filtering rule information to the policy and charging execution function device PCEF.

DRAWINGS

FIG. 1 is a schematic diagram of a PCC architecture of an application scenario according to an embodiment of the present invention;

2 is an IP-CAN session establishment process of an application scenario according to an embodiment of the present invention;

3 is a flowchart of a method for expanding a policy and a charging control rule according to an embodiment of the present invention;

4 is a flowchart of a method for extending a charging rule for a roaming user according to an embodiment of the present invention; FIG. 5 is a flowchart of a method for extending a gate control policy control rule according to an embodiment of the present invention;

FIG. 6 is a system structural diagram of an extended policy and a charging control rule according to an embodiment of the present invention.

detailed description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic diagram of a PCC architecture of an application scenario according to an embodiment of the present invention. As shown in FIG. 1, the PCC system includes an application layer functional entity (AF, Application Function), a policy control and a charging control function entity (PCRF, Policy Control and Charging Rules Function), and is usually set at a gateway (GW, Gateway). Internal Policy and Charging Enforcement Function (PCEF), offline charging system and online charging system.

The AF is used to dynamically provide session information of the application layer to the PCRF.

The PCRF is used to limit the access network of the user equipment (UE, User Equipment), the policy formulated by the operator, the user subscription information obtained from the SPR (Spent Profile Repository), and the user acquired from the AF is currently in progress. The service information and the like determine the corresponding policy and the charging control rule, and the policy and the charging control rule are sent to the PCEF for execution. These policy and charging control rules include filtering rules and corresponding policy and charging control, wherein the policy and charging control includes but is not limited to: detection rules of service data flows, whether to gate, traffic data flow Corresponding quality of service (QoS) and flow-based charging rules; filtering rules are network protocol (IP, Internet Protocol) 5-tuple information, including source and destination IP addresses, source and destination port numbers, and protocols. number.

The PCEF is configured to perform a policy that is sent or specified by the PCRF, that is, to detect the service data flow according to the filtering rule in the policy and the charging control rule sent by the PCRF, and then execute the PCRF policy and the policy data flow. Billing control. For example, performing the detection and measurement of the corresponding service data flow, generating the charging information according to the traffic of the service data flow, sending the payment to the online charging system or the offline charging system for charging, performing the gating of the service data flow, and ensuring the service data. Flow QoS, user plane traffic processing and session management for triggering control planes.

The interface between the PCRF and the PCEF is a Gx reference point, and the PCRF can dynamically control the policy and charging control rules executed by the PCEF through the reference point. The functions of the reference point include: establishing, maintaining, and terminating a network protocol connection access network (IP-CAN, Internet Protocol Connectivity Access Network) session, the PCEF requests policy and charging control rules from the PCRF, and the PCRF provides policy and charging to the PCEF. Control rules, negotiate IP-CAN bearer setup mode, etc. This reference point uses the Diameter protocol.

The IP-CAN session refers to the connection relationship between the UE and the Packet Data Network (PDN), which is identified by the IP address of the UE and the identity of the UE. As long as the UE is assigned an IP address that can be identified by the IP network, it indicates that the IP-CAN session has been established. An IP-CAN session can contain one or more IP-CAN bearers.

FIG. 2 is a flowchart of establishing an IP-CAN session of an application scenario according to an embodiment of the present invention. As shown in FIG. 2, the session establishment process includes the following steps:

Step 200: The UE initiates an IP-CAN session establishment request message to the PCEF for requesting allocation of an IP address identifiable in the PDN network. In the GPRS network, this step is to establish the first Packet Data Protocol (PDP) context.

Step 201: The PCEF sends a CCR (Credit-Control-Request) message including a UE identifier and an IP address to the PCRF to notify the PCRF to establish an IP-CAN session. The PCRF saves the Information in the CCR message.

Steps 202 to 203: If the PCRF needs to sign the related information, for example, the PCRF does not save the subscription related information of the user when establishing the session, and then requests the user subscription information from the SPR; the SPR returns the user subscription related information, including the user, to the PCRF. Information such as the current contracted service and the user's billing model.

Step 204 to step 205: The PCRF generates and stores a policy and charging control rule, and returns the policy and charging control rule to the PCEF through a CCA (Credit-Control-Answer) message.

Step 206 to step 207: The PCEF installs the policy and charging control rule, and returns an IP-CAN session establishment response to the UE.

The IP-CAN session is successfully established, and the UE can perform the transmission of the service data stream. During the transmission process, the PCEF performs the matching judgment of the data packet according to the installed policy and the filtering rule in the charging control rule. Then implement the corresponding policy and charging control.

The Gx interface in the PCC architecture mainly uses a Diameter message transmission policy and a charging control rule, and the PCRF uses a Diameter CCA (this message is used to reply to a CCR message sent by the PCEF) or a re-authentication request (RAR, Re-Auth-Request). The message is used by the PCRF to send the policy and charging control rules to the PCEF. The policy and charging control rules of the service data flow are sent to the PCEF for execution. For example, a charging policy definition in the Charging-Rule-Definition of the CCA or RAR is defined as follows:

Charging-Rule-Definition ::= < A VP Header: 1003 >

{ Charging-Rule-Name }

[ Service-Identifier ]

[ Rating-Group ]

* [ Flow-Description ]

[ Flow- Status ]

[ QoS-Information ] [ Reporting-Level ]

[ Online ]

[ Offline ]

[ Metering-Method ]

[ Precedence ]

[ AF-Charging-Identifier ]

* [ Flows ]

*[ AVP ]

Among them, the braces "{}" indicate that the corresponding item is mandatory, the brackets "[]" indicate that the corresponding item is optional, and "*" indicates that there can be more than one item. Flow-Description indicates one or more IP 5-tuple information of the service data flow; Flow-Status indicates the gating policy information of the corresponding service data flow, for example, the data packet is uploaded up and down. Gating policy control; Rating-Group, Reporting-Level, Online, Offline, Metering-Method, etc., indicating charging control policy information corresponding to the service data flow, and charging rule name (Charging-Rule-Name) indicating carrying traffic data flow control Policy policy and billing control rule name.

FIG. 3 is a flowchart of a method for expanding a policy and a charging control rule according to an embodiment of the present invention. As shown in Figure 3, the method includes the following steps:

Step 300: The PCRF generates a policy and a charging control rule including the extended layer 7 parsing filtering rule information, and sends the packet to the PCEF through the Gx interface according to the policy context information.

In this step, the PCRF may generate a policy and a plan including extended 7-layer parsing filter rule information according to one or more of the policy context information such as the user subscription information, the bearer-related information, the application-related information, and the operator-defined policy. Fee control rules.

The existing PCRF can obtain the user's subscription information from the SPR as needed. Therefore, the related policy based on the extended 7-layer parsing filtering rule information may be pre-defined in the subscription information of the user, and the related policy based on the extended 7-layer parsing filtering rule information may be pre-configured on the PCRF, including whether to allow a certain service, Information such as the bandwidth allocated to the user and the billing method.

The filtering rules in the policy and charging control rules generated in this step may include IP 5-tuple information, Application protocol type (APP-Protocol) and extended 7-layer parsing filter rule information.

The source IP address in the IP 5-tuple information is an IP address allocated to the UE when the IP-CAN session is established, and the corresponding destination IP address may be determined according to the service used by the UE, or may not be The source and destination port numbers are the port number of the service corresponding protocol used by the UE, and the protocol number is the protocol number corresponding to the service used by the UE. For the downlink data packet, the source IP address in the IP 5-tuple information may be According to the service used by the UE, it may be indeterminate. The corresponding destination IP address is the IP address assigned to the UE when the IP-CAN session is established, and the source and destination port numbers are the end numbers of the service corresponding protocol used by the UE. Port, the protocol number is the protocol number corresponding to the service used by the UE. APP-Protocol is the protocol type corresponding to the service used by the UE. The URL is a preset policy information. For example, the protocol type corresponding to the service used by the UE is the http service, and the operator pre-sets a free policy for the education website www edu access in the PCRF for the http service. Therefore, when the user uses the http service, the PCRF generates a Educational website free policy and billing control rules.

After the PCRF formulates the policy and the charging control rule according to the policy context information, the PCRF sends the data to the PCEF through the Diameter CCA or RAR message. The corresponding policy and charging controls may include control policies such as QoS, charging, and/or gating of the application traffic.

For example, in order to include the extended 7-layer parsing filter rule information in the Charging-Rule-Definition attribute value pair (AVP, Attribute-Value - Pair), you need to modify the existing filter rule, and modify the example ^:

Method 1: Add APP-Protocol AVP and URL AVP directly to Charging-Rule-Definition, as defined below:

Charging-Rule-Definition ::= < AVP Header: 1003 >

{ Charging-Rule-Name }

[ Service-Identifier ]

[ Rating-Group ]

* [ Flow-Description ]

[APP-Protocol]

[URL] [ Flow- Status ]

[ QoS-Information ]

[ Reporting-Level ]

[ Online ]

[ Offline ]

[ Metering-Method ]

[ Precedence ]

[ AF-Charging-Identifier ]

* [ Flows ]

*[ AVP ]

Among them, APP-Protocol indicates the application protocol type, such as HTTP, WAP2.0, RTSP and FTP. The cell may not be included in the embodiment of the present invention.

The URL indicates that the 7-layer parsing filtering rule information is extended, for example, http://www.huawei.com. Wildcards (such as http://www.*.com ) can also be used in URLs.

Method 2: Add a new flow-filter AVP instead of the original Flow-Description AVP:

Charging-Rule-Definition ::= < AVP Header: 1003 >

{ Charging-Rule-Name }

[ Service-Identifier ]

[ Rating-Group ]

*[ Flow-Filter ]

[ Flow- Status ]

[ Authorized-QoS ]

[ Reporting-Level ]

[ Online ]

[ Offline ]

[ Metering-Method ]

[ Precedence ]

[ AF-Charging-Identifier ]

*[ Flows ] *[ AVP ]

The Flow-Filter AVP extends the original filtering rules, including not only the IP 5-tuple information, but also the application protocol type and the extended 7-layer parsing filtering rule information. The definition is as follows:

Flow-Filter ::= < AVP Header: xxxx >

[Flow-Description]

[APP-Protocol]

[URL]

The Flow-Description is the same as the definition in the prior art, and mainly includes IP 5-tuple information: source IP address, destination IP address, source port number, destination port number, and protocol number. The IP address can have a mask (for example, the mask length is 8, 16, or 24), and the port number can have a certain range (for example, 551-559). APP-Protocol indicates application protocol types such as HTTP, WAP2.0, RTSP, and FTP. The cell may not be included in the embodiment of the present invention. The URL indicates that the 7-layer parsing filter rule information is extended, for example, http:〃 www.huawei.com. Wildcards (1^J^.http:〃www.*.com) can also be used in URLs. The definitions of other cells are the same as those in the prior art, and are not described herein again.

The description above is only for the definition of the charging rule, and the description of the technical solution in the embodiment of the present invention. In practical applications, the above method can be used to carry extended 7-layer parsing filter rule information in other policy and charging control rule definitions.

When the UE that belongs to the PCRF is in the roaming state, the policy and the charging control rule that are generated in the PCRF are first sent to the PCRF of the user, and then sent by the user to the PCF to the PCEF.

Step 301: The PCEF performs policy control such as QoS, charging, and/or gating of the corresponding service data flow according to the delivered policy and charging control rule.

In this step, the PCEF detects the received data packet, and first uses the IP 5 tuple in the filtering rule to perform rule matching. If the matching succeeds, the application protocol type is further matched. If the application protocol type matches, the PCEF continues. Match the URL information. Then, for the data packet matching the filtering rule, perform corresponding policy and charging control, and execute the corresponding policy and charging. The process of control is the same as the prior art and will not be described in detail herein. If the application protocol type is not included in the policy and charging control rule definition, this step directly matches the URL information after the IP 5 tuple is successfully matched.

For the data packet matching the filtering rule, if the control policy information is a gating control policy, the PCEF filters the data packet, and forwards or discards according to the indication (Disable, Enable, etc.) given by the gating control policy. Gating control; If the control policy information is a QoS control policy, the PCEF may initiate QoS policy control according to the QoS control policy, perform an update operation of the IP-CAN session, such as an QoS parameter update of the IP-CAN session, or an IP-CAN bearer If the control policy information is the charging control policy, the PCEF can perform charging control according to the charging control policy, such as charging according to traffic or duration, online or offline charging, and the like.

The technical solution of the embodiment of the present invention is described in detail below by taking the policy of the extended roaming user and the charging control rule as an example. In this example, the charging policy defined by the operator for the user in the PCRF is to obtain a free charging policy for the user to access the educational website (www.*.edu).

FIG. 4 is a flowchart of a method for extending a charging rule for a roaming user according to an embodiment of the present invention. As shown in Figure 4, the method includes the following steps:

Step 400: When the user uses the data service in the roaming state, first initiate an IP-CAN session establishment request to the V-PCEF.

Steps 401 to 402: The V-PCEF sends a Diameter CCR message to the V-PCRF to request policy and charging control information. The V-PCRF sends a policy and charging control request to the H-PCRF, requesting policy and charging control rules.

Step 403: If necessary, the H-PCRF may obtain the user subscription information according to the SPR.

Step 404: The H-PCRF generates a charging rule including extended 7-layer parsing filtering rule information according to the charging policy defined by the operator and/or the user subscription information, and sends the charging rule to the V-PCRF.

In this step, the operator defines the charging policy: the user accesses the education website (www.*.edu) to obtain a free charging policy, and the H-PCRF defines the charging policy and/or the user subscription information according to the operator. A charging rule including extended 7-layer parsing filter rule information is generated and sent to the V-PCRF. The billing rules include:

Filtering rule information: IP 5-tuple information: The source IP address is the user IP; the destination IP address is arbitrary; the source and destination ports are arbitrary; the protocol number is 6. The protocol number is the protocol number corresponding to the Transmission Control Protocol (TCP).

The application protocol type is http.

The extended 7-layer parsing filter rule information (URL) is http:〃 www.*.edu.

Because it is free, the billing rules also carry DISABLE_OFFLINE ( 0 ) and DISABLE ONLINE ( 0 ) billing attributes.

Since the extended layer 7 parsing filter rule information supports the wildcard in the embodiment of the present invention, the IP address corresponding to the education website is unknown, so the destination IP address here is arbitrary. The port number corresponding to the protocol can be configured according to the actual application. Therefore, the source and destination port numbers are also arbitrary.

Step 405: The V-PCRF sends the charging rule to the V-PCEF.

The charging rules in this step contain filtering rule information:

In the Flow-Description, the IP 5-tuple information is: The source IP address is the user IP; the destination IP address is any; the source and destination ports are arbitrary; and the protocol number is 6 (TCP).

The application protocol (APP-Protocol) type is http.

Because it is free, it also carries the DISABLE-OFFLINE ( 0 ) and DISABLE-ONLINE ( 0 ) billing properties.

Step 406: The V-PCEF installs the charging rule, and sends an IP-CAN session establishment response to the terminal. After the IP-CAN session is established, the service data stream can be transmitted, and the PCEF performs policy and charging on the service data flow according to the policy and charging control rule that is delivered by the extended layer 7 parsing filtering rule information. Control, for example, in this example, performs a free charging policy for data messages that the user accesses the educational website. The process of performing the charging is the same as that of the prior art according to the charging rule that includes the information of the extended layer 7 parsing filtering rule, and details are not described herein again.

The following takes the extended gating policy control rule as an example to describe the technical solution of the embodiment of the present invention. Detailed description. In this example, the strategy developed by the operator in the PCRF is: To prevent users from being infected with viruses, users are prohibited from accessing some unsafe websites abroad, and the domain name information of these websites is pre-configured.

FIG. 5 is a flowchart of a method for expanding a gate control policy control rule according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps:

Step 500: Establish an IP-CAN session for the user equipment.

Step 501: If an internal or external event is triggered, for example, when the user accesses the Internet and needs to access other services with larger bandwidth requirements, the UE needs to establish a new IP-CAN bearer, and therefore sends an IP-CAN bearer setup request to the PCEF. .

Step 502: The PCEF sends a Diameter CCR message to the PCRF, where the message carries bearer related information, such as a bearer identifier, and user information, etc., for requesting policy and charging control information.

Step 503: If necessary, the PCRF may obtain the user subscription information according to the user information in the SPR. Step 504: The PCRF generates a gating policy control rule that includes the extended layer 7 parsing filtering rule information corresponding to the bearer identifier according to the operator-defined gating policy, the bearer-related information, and/or the user subscription information, and sends the Gating Policy to the GX interface through the Gx interface. PCEF.

In this example, the operator's gating policy defined in the PCRF is: prohibiting users from accessing some foreign unsafe websites (www.unsafe*.com), and the PCRF is contracted according to the operator-defined gating policy, bearer related information, and/or user subscription. The information generates a gating policy control rule and sends it to the PCEF for execution.

The gating policy control rule contains filtering rule information:

Flow-Description: IP 5-tuple information: The source IP address is the user IP; the destination IP address is arbitrary; the source and destination ports are arbitrary; the protocol number is 6 ( TCP);

The application protocol (APP-Protocol) type is WAP;

The extended 7-layer parsing filter rule information (URL) is http:〃 www.unsafe*.com.

Flow-Status defines gating both upstream and downstream.

Step 505: The PCEF installs the gating policy control rule, and sends an IP-CAN bearer setup response to the user equipment.

After the bearer is successfully established, the PCEF performs filtering rule matching for the user's service data flow, such as If the filtering rule in the gating policy control rule is matched, the service data flow packet of the user is discarded, otherwise the service data flow packet of the user is forwarded.

FIG. 6 is a system structural diagram of an extended policy and a charging control rule according to an embodiment of the present invention. As shown in Figure 6, the system includes PCRF61 and PCEF62.

The PCRF61 is configured to generate a policy and a charging control rule including extended 7-layer parsing filtering rule information, and send the packet to the PCEF 62. The PCEF62 performs a policy and a charging control rule that includes the extended 7-layer parsing filtering rule information received from the PCRF 61. .

Specifically, the PCRF 61 includes a rule generation module 611, configured to generate a policy and a charging control rule including extended 7-layer parsing filter rule information, and a sending module 612, configured to include the extended 7-layer parsing filter generated by the rule generating module 611. Policy and charging control rules for rule information are sent to PCEF62.

The PCRF 61 further includes a policy context information obtaining module 613, configured to acquire policy context information from the SPR, the PCEF 62, or the AF, and save the information to the storage module 614. The storage module 614 is configured to store the policy context information acquired by the policy context information acquiring module. Correspondingly, the rule generation module 611 generates a policy and a charging control rule including extended 7-layer parsing filter rule information according to the policy context information saved by the storage module 614.

The sending module 612 can further send the policy and the fee control rule including the extended layer 7 parsing filter rule information to the PCEF of the user visit.

When the PCRF 61 is the user's home PCRF and the PCEF 62 is the user visited PCEF, the system may further include the user visited PCRF.

The PCRF 61 further sends the policy and charging control rule including the extended 7-layer parsing filtering rule information to the user visited PCRF; the user visited the PCRF, and receives the policy and charging including the extended 7-layer parsing filtering rule information sent by the user home PCRF. Control rules; and send to the PCEF where the user visits.

It can be seen from the foregoing that, in the technical solution provided by the embodiment of the present invention, the PCRF61 generates a policy and a charging control rule that includes extended layer 7 parsing filtering rule information, and then sends the packet to the PCEF 62 for execution, so that when the user is roaming In the state, the visiting PCEF can obtain the attribution The PCRF includes policies and charging control rules that extend the 7-layer parsing filter rule information to complete accurate and comprehensive policy and charging control.

At the same time, the technical solution provided by the embodiment of the present invention can implement the transmission of the policy including the extended 7-layer parsing filtering rule information and the charging control rule by using the Gx interface. Therefore, the PCEF, the PCRF, and the SPR need not be saved simultaneously. The policy of the filtering rule information and the charging control rule information are parsed, thereby saving network resources. In addition, since it is not necessary to save the policy and charging control rule information including the extended layer 7 parsing filter rule information in the PCEF, when the user's personalized setting is modified, the PCRF only needs to generate the real-time included according to the user's modified personalized setting. The policy and charging control rules of the 7-layer parsing filtering rule are extended without separately modifying the policy and charging control rules configured on each network device, thereby facilitating management.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. In execution, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The above description is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A method for extending a policy and a charging control rule, the method comprising: the policy control and charging rule function device PCRF generating a policy and a charging control rule including extended layer 7 parsing filtering rule information, and sending The policy and billing execution function device PCEF is executed.

2. The method of claim 1, wherein the policy and charging control rules including extended layer 7 parsing filter rule information are generated by the PCRF based on policy context information.

The method according to claim 2, wherein the policy context information comprises: user subscription information acquired from the subscription database SPR, bearer related information acquired from the PCEF, and application related information acquired from the application layer function device. And one or more of the pre-set policies.

The method according to claim 1, wherein the extended layer 7 parsing filter rule information is a uniform resource locator URL.

The method according to claim 1, wherein the PCRF generates a policy and a charging control rule that includes extended layer 7 parsing filter rule information, including:

The PCRF carries a flow filtering rule Flow-Filter in the policy and charging control rule definition of the policy and the charging control rule; the Flow-Filter includes a flow description Flow-Description and an extended 7-layer analytical filtering rule information, and corresponding Policy and billing control;

Or the PCRF carries the flow description Flow-Description and the extended layer 7 parsing filter rule information, and the corresponding policy and charging control in the policy and charging control rule definition of the policy and charging control rule.

The method according to claim 5, wherein the PCRF further carries an application protocol type in the policy and charging control rule definition.

7. The method according to claim 6, wherein the process of the PCEF executing the policy and the charging control rule including the extended layer 7 parsing filtering rule comprises:

The PCEF receives the data packet, and when the data packet matches the content of the flow description, and the data packet matches the application protocol type and the extended layer 7 parsing filtering rule, the policy and the charging are performed. Control.

The method according to claim 1, wherein when the PCRF is a user-local PCRF, and the PCEF is a PCEF visited by a user, the PCRF includes a policy for extending 7 layers of parsing filter rule information. The charging control rules sent to the PCEF include:

The user-local PCRF sends the policy and charging control rule including the extended layer 7 parsing filter rule information to the user visited PCRF, and the policy and charging control including the extended 7-layer parsing filtering rule information received by the user visited by the PCRF The rules are sent to the PCEF where the user visits.

A system for extending a policy and a charging control rule, characterized in that the system comprises a policy control and charging rule function device PCRF (61) and a policy and charging execution function device PCEF (62), the PCRF ( 61), configured to generate a policy and charging control rule that includes extended layer 7 parsing filter rule information, and send the same;

The PCEF (62) is configured to execute a policy and a charging control rule that is received from the PCRF (61) and includes extended layer 7 parsing filter rule information.

The system according to claim 9, wherein the PCRF (61) is a user-localized PCRF, and the PCEF (62) is a user visited PCEF;

The system further includes a user visited PCRF,

The user attribution PCRF is used to send the policy and the charging control rule including the extended layer 7 parsing filter rule information to the user visited PCRF;

The user visits the PCRF, and is configured to receive a policy and a charging control rule that is sent by the user's home PCRF and includes the extended layer 7 filtering and filtering rule information; and sends the policy to the user visited PCEF.

A policy control and charging rule function device PCRF, characterized in that the PCRF (61) comprises a rule generation module (611) and a transmission module (612),

The rule generation module (611) is configured to generate a policy and a charging control rule that include extended layer 7 parsing filter rule information;

The sending module (612) is configured to send, by the rule generating module (611), a policy and a charging control rule that includes extended 7-layer parsing filtering rule information to a policy and charging execution function device. PCEF ( 62 ).

The PCRF according to claim 11, wherein the PCRF (61) further includes a policy context information obtaining module (613) and a storage module (614),

The policy context information obtaining module (613) is configured to obtain policy context information from the PCEF (62), the user subscription database SPR or the application layer function device, and save the information to the storage module (614);

The storage module (614) is configured to store policy context information acquired by the policy context information obtaining module (613);

The rule generation module (611) further generates a policy and a charging control rule including extended layer 7 parsing filter rule information according to the policy context information saved by the storage module (614).

The PCRF according to claim 11, wherein the sending module (612) further sends the policy and the charging control rule including the extended layer 7 parsing filtering rule information to the PCEF of the user visited.