WO2009046678A1 - Procédé et dispositif pour obtenir la capacité de fonction d'application de politique et de facturation - Google Patents

Procédé et dispositif pour obtenir la capacité de fonction d'application de politique et de facturation Download PDF

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Publication number
WO2009046678A1
WO2009046678A1 PCT/CN2008/072592 CN2008072592W WO2009046678A1 WO 2009046678 A1 WO2009046678 A1 WO 2009046678A1 CN 2008072592 W CN2008072592 W CN 2008072592W WO 2009046678 A1 WO2009046678 A1 WO 2009046678A1
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WO
WIPO (PCT)
Prior art keywords
pcef
pcrf
capability
policy
capability information
Prior art date
Application number
PCT/CN2008/072592
Other languages
English (en)
French (fr)
Inventor
Shibi Huang
Peng Zhao
Yuxin Mao
Yu Zuo
Fengbo Wang
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to EP08838536A priority Critical patent/EP2197152A4/en
Publication of WO2009046678A1 publication Critical patent/WO2009046678A1/zh
Priority to US12/539,103 priority patent/US20100186064A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1403—Architecture for metering, charging or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/20—Traffic policing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/24—Negotiation of communication capabilities

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and a device for acquiring a policy and a charging execution function. Background technique
  • PCC Policy Control and Charging
  • PCRF Policy Control and Charging Rules Function
  • AF Application Function, Application Layer Functional Entity
  • PCEF Policy and Charging
  • Enforcement Function Policy and Charging Enforcement Entity
  • SPR SPR
  • the policy context information obtained by the subscription profile repository (the subscription profile repository) is used to formulate a corresponding policy for the service and is sent to the PCEF for implementation to implement QoS, gate control, and accounting policy control.
  • the PCRF needs to subscribe to application events or make policy decisions based on the capabilities of the PCEF.
  • the capabilities of the PCEF include application event detection capability, application control capability, network security protection capability, and the like.
  • the PCRF needs to know the application event detection capability supported by the PCEF when it subscribes to an application event for the service, otherwise it will cause an incorrect subscription.
  • the PCRF subscribes to the FTP (File Transfer Protocol) application to the PCEF and requires the PCEF to detect the FTP application event.
  • FTP File Transfer Protocol
  • the PCEF does not have the ability to detect FTP application events. Therefore, even if there is an FTP application, the PCEF cannot detect it and report it to the PCRF.
  • PCEF For PCEF application control capabilities, PCEF requires specific application control capabilities for specific application service characteristics. For example, for the BT (Bit Torrent) download service, the PCEF is required to have the ability to control the number of BT download connections. Therefore, when implementing policy control on the BT download service, the PCRF needs to know whether the controlled PCEF has the ability to control the number of BT download connections. .
  • the PCRF needs to formulate corresponding control policies for services according to all supported network security protection capabilities of the current PCEF and other policy context information.
  • the inventor has found that the prior art has at least the following problems:
  • the capability of the PCEF may be configured on the PCRF in advance by a pre-configured manner, but the implementation still has insufficient
  • the PCEF version is upgraded or the like, the capacity configuration is increased or deleted.
  • the configuration data of the PCRF needs to be changed accordingly.
  • there is a PCRF in the network to control multiple PCEFs at the same time due to the capabilities of each PCEF. There may be differences. The ability to configure all PCEFs at the same time will inevitably lead to cumbersome configuration and consequent management and maintenance troubles.
  • the PCRF needs to know the capabilities of the PCEF when applying the event subscription or policy decision to the service.
  • the method of configuring the PCEF capability on the PCRF in advance may cause maintenance cost and management trouble. New ways to meet the above application needs. Summary of the invention
  • the embodiment of the invention provides a method and a device for the acquisition of the policy and the charging execution function, so as to implement the PCRF to issue the relevant processing instruction according to the PCEF capability.
  • the embodiment of the invention provides a method for acquiring a policy and a charging execution function, which includes the following steps:
  • the policy control and charging rule function entity PCRF acquires the capability information of the policy and charging execution function PCEF;
  • the PCRF performs processing based on the capability information.
  • Embodiments of the present invention also provide a computer program product, the computer program product comprising computer program code, when the computer program code is executed by a computer, the computer program code may cause the computer to execute the foregoing acquisition strategy And the step of charging any of the methods of performing the functional capabilities.
  • Embodiments of the present invention also provide a computer readable storage medium, the computer storing computer program code, when the computer program code is executed by a computer, the computer program code may cause the computer to execute the foregoing acquisition strategy And the step of charging any of the methods of performing the functional capabilities.
  • the embodiment of the invention further provides a PCRF, including:
  • a capability information receiving unit configured to acquire capability information of the PCEF
  • the processing unit is connected to the capability information receiving unit, and configured to perform processing according to the capability information.
  • the PCEF reports its own capability in advance, so that the PCRF can make a policy decision for the service or initiate a related application event subscription to the PCEF when the PCEF capability is learned, thereby solving the problem that the PCRF cannot Knowing the PCEF capabilities may cause problems such as subscription errors, decision-making effectiveness, and so on.
  • Figure 1 is a diagram of a PCC architecture
  • FIG. 3 is a flow chart of a method for acquiring a policy and a charging execution function in Embodiment 2 of the present invention
  • FIG. 4 is a flow chart of a method for acquiring a policy and a charging execution function in Embodiment 3 of the present invention.
  • FIG. 5 is a flow chart of a method for acquiring a policy and a charging execution function in Embodiment 4 of the present invention.
  • FIG. 6 is a structural diagram of a system for acquiring a policy and a charging execution function in an embodiment of the present invention. detailed description
  • the PCRF functional entity determines the corresponding policy according to the restriction of the user accessing the network, the operator policy, the user subscription data (obtained from the SPR functional entity), and the service information currently being performed by the user (obtained from the AF functional entity), and This policy is provided to the PCEF functional entity, which is executed by the PCEF functional entity.
  • These policies include the detection rules of the service data flow (the completion of a certain service, such as the voice IP flow set), whether it is gated, the QoS corresponding to the service data flow, and the flow-based charging rules.
  • the PCEF functional entity performs the policy that the PCRF delivers or specifies, specifically, performs the detection and measurement of the service data flow, ensures the QoS of the service data flow, the user plane traffic processing, and the session management of the trigger control plane.
  • the AF function entity dynamically provides session information of the application layer to the PCRF, and the PCRF dynamically generates or modifies the corresponding rule according to the information.
  • the online charging system includes: CAMEL SCP (Customized Applications for Mobile network Enhanced Logic Service Control Point), Service Data Flow Based Credit Control (Business Data Flow Based Credit Control).
  • the interface between the functional entities in Figure 1 includes: an Rx reference point, which is used by the AF to deliver application layer related information, including but not limited to an IP filter, for identifying service data.
  • the bandwidth information of the stream the bandwidth information required by the application or the medium.
  • the reference point uses the Diameter (National Communication Industry Standard) protocol defined by the Internet Engineering Task Force (IE); the Gx reference point enables the PCRF to dynamically control the PCEF.
  • the PCC rules executed on the reference point include establishing, maintaining and terminating IP-CAN (IP Connectivity Access Network) sessions, PCEF requesting PCC rules from PCRF, PCRF providing PCC rules to PCEF, and negotiating IP-
  • the CAN bearer establishes a mode and other functions, and the reference point uses the Diameter protocol defined by the IETF.
  • the first embodiment of the present invention provides a method for acquiring a policy and a charging execution function. As shown in FIG. 2, the method includes:
  • Step S201 The PCRF acquires capability information of the PCEF, where the capability information includes but is not limited to one or more of an application event detection capability, an application control capability, and a security protection capability.
  • the capability information of the PCF to obtain the PCEF specifically includes: the capability information that the PCRF receives the PCEF. Or, the PCRF sends an acquisition capability information request to the PCEF; the PCRF receives an acquisition capability information response returned by the PCEF, and the response carries the capability information.
  • PCEF capability in this embodiment is as follows:
  • Definition Application-Deal-Capability AVP indicates the application processing capability supported by PCEF, Grouped. Includes application event detection capabilities and application control capabilities. The description is as follows:
  • the Application-ID AVP is Enumerated, which indicates the application type.
  • the values are as follows: FTP application, web application, streaming application, game application, Skype application, BT download application;
  • App-Event-Detect AVP is Enumerated Type, which indicates the application trigger event, that is, under which event, application event detection can be triggered. Examples of values are as follows: START ( 0 ) indicates the start of the application, STOP ( 1 ) indicates the end of the application, MODIFY ( 2 ) indicates the application change;
  • App-Control AVP is the Enumerated type, Indicates the application control capability supported by the PCEF, that is, the specific control capability of the PCEF for specific applications. The value examples are as follows: Connect-Number ( 0 ) indicates that the PCEF supports the control of the number of service connections, and Bit-Rate-Control ( 1 ) indicates the PCEF. Support for control of service transmission rate,
  • AVP is used to indicate the network security protection capabilities supported by PCEF, Enumerated.
  • PCEF has the ability to protect against network security for users. Examples of values are as follows: ACL-Control ( 0 ) indicates the control function of the access control list supported by PCEF, and Firewall-Control ( 1 ) indicates the firewall control function supported by PCEF.
  • the PCRF In order to subscribe to events or make policy decisions for a service, the PCRF needs to acquire PCEF capabilities from the PCEF. For example, the capability of reporting PCEF can be reported through the Diameter CCR message.
  • the message structure is as follows:
  • ⁇ CC-Request>:: ⁇ Diameter Header: 272, REQ, PXY >
  • Step S202 The PCRF performs processing according to the capability information.
  • the capability information is an application event detection capability
  • the PCRF subscribes an application event to the PCEF according to the application event detection capability.
  • the PCRF sends a corresponding application control policy to the PCEF according to the application control capability.
  • the PCRF sends a corresponding security control policy to the PCEF according to the security protection capability.
  • the PCEF sends a PCRF to the PCF and the PCRF.
  • the application event detection capability is reported.
  • the PCRF may send the acquisition capability information request to the PCEF, and the PCRF receives the event detection capability information in the response capability information returned by the PCEF.
  • the PCRF sends a subscription to the game application event to the PCEF according to the application event detection capability of the PCEF.
  • the PCEF detects the game application event and reports the event to the PCRF. According to the detection report result, the PCRF can implement the dynamic application of the game. Policy control.
  • FIG. 3 The specific implementation process of this embodiment is shown in FIG. 3, and includes:
  • Step S301 The PCEF reports a Diameter CCR (Credit Control Request) message to the PCRF, where the message carries all supported application event detection capabilities, and the message format is as follows:
  • ⁇ CC-Request>:: ⁇ Diameter Header: 272, REQ, PXY >
  • the Diameter CCR message carries multiple Application-Deal-Capability AVPs, which have different values, indicating that the PCEF supports application processing capabilities for Web applications, FTP applications, streaming applications, game applications, and BT downloads.
  • the Application-Deal-Capability AVP form that describes the processing power of the game application is as follows:
  • the Application-ID AVP indicates the game application; the App-Event-Detect values are start ( 0 ), stop ( 1 ), and modify ( 3 ) respectively indicate that the PCEF supports the event detection of the game application startup, termination, and change.
  • Step S302 According to the application event detection capability reported by the PCEF, the PCRF learns that the PCEF supports the detection of the game application event, and subscribes to the PCEF subscription game application startup event by using a Diameter CCA (Dimeter Credit-Control-Answer, Diameter Credit Control Response) message.
  • Diameter CCA Diameter Credit-Control-Answer, Diameter Credit Control Response
  • Step S303 The user equipment starts the network game service.
  • Step S304 The PCEF detects the subscribed application event.
  • Step S305 the PCEF passes the detected game application event through Diameter RAR (Dimeter Re-Auth-Request, Diameter Re-Authoration Request) The message is sent to the PCRF.
  • Diameter RAR Diameter Re-Auth-Request, Diameter Re-Authoration Request
  • step S306 the PCRF formulates a policy for the game application according to the report result and the other information of the policy, and sends the message to the PCEF through a Diameter RAA (Re-Authorization Reply message) message.
  • Diameter RAA Re-Authorization Reply message
  • Step S307 The PCEF implements policy control on the game service according to the issued policy.
  • the PCEF reports the PCEF application control capability to the PCRF when the PCEF and the PCRF are associated; the PCRF may also send the acquisition capability information request to the PCEF, and the PCRF receives the acquisition capability information response returned by the PCEF.
  • Describe application control capability information The PCRF develops a corresponding control strategy for the PCEF based on the application control capability of the PCEF and other policy context information.
  • the PCEF can implement application control on the services carried out on the PCEF according to the control policy.
  • the implementation process of this embodiment is as shown in FIG. 4, including:
  • Step S401 The PCEF reports a Diameter CCR message to the PCRF, where the message carries the PCEF application control capability, and the message format is as follows:
  • ⁇ CC-Request>:: ⁇ Diameter Header: 272, REQ, PXY >
  • the Diameter CCR message carries multiple Application-Deal-Capability AVPs, which have different values, indicating that the PCEF supports application processing capabilities for Web applications, FTP applications, streaming applications, game applications, and BT downloads.
  • the Application-Deal-Capability AVP form that describes the application control capabilities.
  • Application-ID AVP represents a specific application, such as BT download; App-Control takes a value of Connect-Number ( 0 ) to indicate that PCEF supports the control of the number of service connections.
  • Step S402 the PCRF is based on the application control capability reported by the PCEF, and combined with other The policy context information completes the formulation of the application control strategy.
  • Step S403 The PCRF sends the application control policy to the PCEF through a Diameter CCA message.
  • Step S404 the PCEF executes an application control policy.
  • the number of connections to the services carried out on the PCEF is controlled according to the policy.
  • the PCEF reports the PCEF network security protection capability to the PCRF when the association between the PCEF and the PCRF is established.
  • the PCRF may send the acquisition capability information request to the PCEF, and the PCRF receives the network security protection capability information in the acquisition capability information response returned by the PCEF.
  • the PCRF makes security policy decisions based on the network security protection capabilities of the PCEF, the capabilities of the user equipment (such as operating system, operating system patches, anti-virus software, etc.) combined with other policy context information. And sent to the PCEF for execution; PCEF can provide security protection for the network according to the security policy.
  • the specific process is as shown in FIG. 5, including: Step S501: The PCEF reports the security protection capability of the PCEF to the PCRF through the Diameter CCR message;
  • ⁇ CC-Request>:: ⁇ Diameter Header: 272, REQ, PXY >
  • the Security-Defend-Capability values are ACL-Control ( 0 ) and Firewall-Control ( 1 ) indicate the security protection capabilities of the PCEF support admission control list and firewall mode selection.
  • Step S502 the PCRF returns an acknowledgement message Diameter CCA (Cell Control Response Message) to the PCEF.
  • Diameter CCA Cell Control Response Message
  • Step S503 The user equipment sends an IP-CAN session establishment request to the PCEF.
  • Step S504 after receiving the IP-CAN session establishment request, the PCEF sends a Diameter RAR request to the PCRF to establish a policy decision for the IP-CAN session.
  • IP-CAN is an access network that can still store IP service continuity services when the user roams within the access network (when the location changes), such as GPRS network, I-WLAN network, etc.; IP-CAN bearer (IP-CAN bearer) IP transmission path with explicit rate, delay and bit error rate (the path refers to It is between the access network and the PCEF (GW).
  • the IP-CAN bearer corresponds to the PDP context; the IP-CAN session (IP-CAN session) is the identifier of the UE and the PDN (packet data network, such as the internet).
  • the connection relationship is identified by the IP address of the UE and the identity of the UE.
  • the IP-CAN exists and the IP-CAN session can contain one or more IP-CAN bearers.
  • Step S505 The PCRF performs the security policy decision of the admission control list control and the firewall mode selection according to the network security protection capability of the PCEF and combined with other policy context information.
  • Step S506 The PCRF sends the security policy to the PCEF through the Diameter RAA message.
  • Step S507 the PCEF executes a corresponding security policy.
  • Step S508 The PCEF returns a response that the IP-CAN session is successfully established to the user equipment.
  • the embodiment of the present invention further provides a PCRF.
  • the method includes: a capability information receiving unit 100, configured to acquire capability information of a PCEF, and a processing unit 300, connected to the capability information receiving unit 100, according to the foregoing The capability information is processed.
  • the capability information acquisition requesting unit 200 is configured to send an acquisition capability information request to the PCEF, so that the PCEF reports the capability information.
  • the capability information includes, but is not limited to, one or more of an application event detection capability, an application control capability, and a security protection capability.
  • the processing unit 300 may specifically include: a first processing sub-unit 310, configured to subscribe an application event to the PCEF according to the application event detection capability; and/or a second processing sub-unit 320, configured to: And sending, according to the application control capability, a corresponding application control policy to the PCEF; and/or the third processing sub-unit 330, configured to deliver a corresponding security control policy to the PCEF according to the security protection capability.
  • the PCRF can make a policy decision for the service or initiate a related application event subscription to the PCEF when the PCEF capability is learned, thereby solving the problem that the PCRF cannot know the PCEF capability. It may cause problems such as subscription errors, invalid decisions, and so on.
  • a computer device (may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

Description

获取策略和计费执行功能能力的方法及设备 本申请要求于 2007 年 9 月 30 日提交中国专利局、 申请号为 200710162771.0、 发明名称为 "获取策略和计费执行功能能力的方法 及设备" 的中国专利申请的优先权， 其全部内容通过引用结合在本申 请中。 技术领域
本发明实施例涉及通信技术领域，尤其涉及一种获取策略和计费 执行功能能力的方法及设备。 背景技术
随着无线数据业务的快速发展， 对数据业务的 QoS ( Quality of Service,服务质量）和计费也提出了更高的要求。 3GPP( 3rd Generation Partnership Project , 第三代合作伙伴计划） R7 将 R6 中的 SBLP
( Service-Based Local Policy, 基于业务的本地策略）和 FBC ( Flow Based Charging,基于流计费）两项功能合并，称为 PCC( Policy Control and Charging, 策略和计费控制）。
在 PCC策略控制架构中， PCRF( Policy Control and Charging Rules Function, 策略控制和计费规则功能实体）需要依据从各个功能实体， 例如： AF ( Application Function,应用层功能实体）、 PCEF ( Policy and Charging Enforcement Function , 策略和计费执行实体 )、 SPR
( Subscription Profile Repository, 签约信息库）等获取的策略上下文 信息为业务制定相应的策略并下发给 PCEF执行， 以实现对业务的 QoS, 门控、 计费的策略控制。 然而随着网络的发展和业务的丰富， PCEF上实现了更多其他的能力。 在某些应用场景下， PCRF需要根 据 PCEF的能力为业务订阅应用事件或者进行策略决策。 所述 PCEF 的能力包括了应用事件检测能力、应用控制能力、 网络安全防护能力 等。 对于 PCEF的应用事件检测能力， PCRF在为业务实现对某一应 用事件的订阅时， 需要知道 PCEF支持的应用事件检测能力， 否则会 引发错误的订阅。 例如， PCRF 向 PCEF 订阅 FTP ( File Transfer Protocol, 文件传输协议）应用， 要求 PCEF检测上报 FTP应用事件。 但是 PCEF并不具备 FTP应用事件的检测能力， 因此即使存在 FTP 应用， PCEF也无法对其进行检测并上报给 PCRF。
对于 PCEF 的应用控制能力， 针对具体应用业务的特征， PCEF 需要有具体的应用控制能力。 例如对于 BT ( Bit Torrent ) 下载业务， 就要求 PCEF具有控制 BT下载连接数的能力， 因此在对 BT下载业 务实施策略控制时， PCRF需要知道受控的 PCEF是否具有对 BT下 载连接数控制的能力。
对于 PCEF的网络完全防护能力， 由于用户接入类型、 终端操作 系统等不同， 需要对用户的访问业务内容、 防火墙模式等进行不同的 设置和控制。 因此在对用户开展的业务实施策略控制时， PCRF需要 根据当前 PCEF所有支持的网络安全防护能力以及其他策略上下文信 息， 为业务制定相应的控制策略。
在实现本发明的过程中， 发明人发现现有技术至少存在以下问 题： 现有技术中， 上述 PCEF的能力可以通过预配置的方式， 事先配 置于 PCRF上， 但在实现方式上仍存在不足之处： 如果 PCEF版本升 级等原因而导致能力的增加或者删减，需要对 PCRF的相关配置数据 进行相应的变更； 此外， 如果网络中存在一个 PCRF 同时控制多个 PCEF的情况， 由于各 PCEF的能力可能存在区别， 需要同时配置所 有 PCEF的能力， 势必造成了配置的繁瑣， 以及随之带来的管理和维 护的麻烦。
综上所述， 在对业务进行应用事件订阅或者进行策略决策时， PCRF需要知道 PCEF的能力， 而通过事先在 PCRF上配置 PCEF能 力的方式又会造成维护的成本和管理的麻烦，需要有一种新的方式以 满足上述应用需求。 发明内容
本发明实施例提供一种获取策略和计费执行功能上报的方法及 设备， 以实现 PCRF根据 PCEF能力下发相关处理指令。
本发明实施例提供了一种获取策略和计费执行功能能力的方法， 包括以下步骤：
策略控制和计费规则功能实体 PCRF 获取策略和计费执行功能 PCEF的能力信息；
所述 PCRF根据所述能力信息进行处理。
本发明实施例还提供了一种计算机程序产品，所述计算机程序产 品包括计算机程序代码， 当所述计算机程序代码被一个计算机执行的 时候，所述计算机程序代码可以使得所述计算机执行前述获取策略和 计费执行功能能力的方法中任意一项的步骤。
本发明实施例还提供了一种计算机可读存储介质，所述计算机存 储计算机程序代码， 当所述计算机程序代码被一个计算机执行的时 候，所述计算机程序代码可以使得所述计算机执行前述获取策略和计 费执行功能能力的方法中任意一项的步骤。
本发明实施例还提供了一种 PCRF, 包括：
能力信息接收单元， 用于获取 PCEF的能力信息；
处理单元， 与所述能力信息接收单元连接， 用于根据所述能力信 息进行处理。
与现有技术相比，本发明实施例中， PCEF事先上报自身的能力， 使得 PCRF在获知 PCEF能力的情况下， 为业务进行策略决策或者向 PCEF发起相关应用事件订阅，从而解决了由于 PCRF无法获知 PCEF 能力而可能造成订阅错误、 决策实效等问题。 附图说明
图 1是一种 PCC架构图；
图 2 是本发明实施例一中获取策略和计费执行功能能力方法流 程图；
图 3 是本发明实施例二中获取策略和计费执行功能能力方法流 程图；
图 4 是本发明实施例三中获取策略和计费执行功能能力方法流 程图；
图 5 是本发明实施例四中获取策略和计费执行功能能力方法流 程图；
图 6 是本发明实施例中获取策略和计费执行功能能力系统结构 图。 具体实施方式
如图 1所示， 为一种 PCC逻辑架构， 包括 PCRF、 PCEF、 AF、 SPR、 离线计费系统和在线计费系统。 其中， PCRF 功能实体根据用 户接入网络的限制、 运营商策略、 用户签约数据（从 SPR功能实体 获取） 以及用户当前正在进行的业务信息（从 AF功能实体获取）等 决定对应的策略， 并将该策略提供给 PCEF功能实体， 由 PCEF功能 实体执行这些策略。 这些策略包括业务数据流（完成某一业务， 比如 语音的 IP流集合） 的检测规则、 是否门控、 业务数据流对应的 QoS 和基于流的计费规则等。 PCEF功能实体执行 PCRF下发或者指定的 策略， 具体来说就是执行业务数据流的检测和测量、保证业务数据流 的 QoS、 用户面流量处理和触发控制面的会话管理等。 AF功能实体 向 PCRF动态提供应用层的会话信息， PCRF根据该信息动态生成或 者修改对应的规则。在线计费系统中包括： CAMEL SCP ( Customized Applications for Mobile network Enhanced Logic Service Control Point, 移动网络增强逻辑客户化应用的业务控制点）、 Service Data Flow Based Credit Control (基于业务数据流的信用控制）。
图 1 中各功能实体间的接口包括： Rx参考点， 用于 AF下发应 用层相关信息， 该信息包括但不限于 IP过滤器、 用于识别业务数据 流的带宽信息、 应用或者媒体所需的带宽信息， 该参考点使用 IETF ( Internet Engineering Task Force , Internet 工程任务组) 定义的 Diameter (国家通信行业标准）协议； Gx参考点使 PCRF可以动态控 制 PCEF 上所执行的 PCC 规则， 该参考点包括建立， 维护和终结 IP-CAN ( IP Connectivity Access Network, IP连接接入网络）会话、 PCEF向 PCRF请求 PCC规则、 PCRF向 PCEF提供 PCC规则、 协商 IP-CAN承载建立模式等功能， 该参考点使用 IETF定义的 Diameter 协议。
本发明实施例一提供了一种获取策略和计费执行功能能力的方 法， 如图 2所示， 包括：
步骤 S201 , PCRF获取 PCEF的能力信息， 能力信息包括但不限 于应用事件检测能力、 应用控制能力和安全防护能力中的一种或几 种。 其中， PCRF获取 PCEF的能力信息具体包括： PCRF接收所述 PCEF的能力信息。 或， PCRF向所述 PCEF发送获取能力信息请求； 所述 PCRF接收所述 PCEF返回的获取能力信息响应， 所述响应中携 带所述能力信息。
本实施例中一个描述 PCEF 能力的示例如下： 定义 Application-Deal-Capability AVP表示 PCEF 支持的应用处理能力， Grouped型。 包含应用事件检测能力、应用控制能力。描述信息如下：
Application-Deal-Capability ::= <AVP Header： χ χ χ>
{ Application-ID }
[ App-Event-Detect ]
[ App-Control ]
其中 Application-ID AVP为 Enumerated (枚举 )型， 表示应用类 型， 取值示例如下： FTP应用、 Web应用、 流媒体应用、 游戏应用、 Skype应用、 BT下载应用； App-Event-Detect AVP为 Enumerated型， 表示应用触发事件， 即在何种事件下， 可以触发应用事件检测。 取值 示例如下： START ( 0 )表示应用开始、 STOP ( 1 )表示应用结束、 MODIFY ( 2 )表示应用更改； App-Control AVP为 Enumerated型， 表示 PCEF支持的应用控制能力， 即针对具体应用， PCEF具体的控 制能力， 取值示例如下： Connect-Number ( 0 )表示 PCEF支持对业 务连接数的控制、 Bit-Rate-Control ( 1 )表示 PCEF支持对业务传输速 率的控制、
定义 Security-Defend-Capability AVP用于表示 PCEF支持的网络 安全防护能力， Enumerated型。 PCEF具有针对用户的网络安全防护 的能力。 取值示例如下： ACL-Control ( 0 )表示 PCEF 支持的准入 控制列表的控制功能、 Firewall-Control ( 1 )表示 PCEF支持的防火墙 控制功能。
PCRF为了为业务进行事件订阅或者进行策略决策，需要从 PCEF 获取 PCEF的能力。 例如可以通过 Diameter CCR消息上报 PCEF的 能力， 其消息结构如下所示：
<CC-Request>：: = < Diameter Header: 272, REQ, PXY >
< Session-Id >
* [ Application-Deal-Capability ]
[ Security-Defend-Capability ] 其中标记为" *，，的应用处理能力参数表示该消息可以携带多个， 每一个分别表示 PCEF支持针对具体应用的事件检测能力和应用控制 能力。
步骤 S202, PCRF根据该能力信息进行处理。 当所述能力信息为 应用事件检测能力时， 所述 PCRF 根据所述应用事件检测能力向 PCEF订阅应用事件。
当能力信息为应用控制能力时，所述 PCRF根据所述应用控制能 力下发相应的应用控制策略给 PCEF。
当能力信息为安全防护能力时，所述 PCRF根据所述安全防护能 力下发相应的安全控制策略给 PCEF。
下面结合实施例一的技术方案对各种应用场景进行详细说明。 本发明实施例二中， PCEF在 PCEF和 PCRF建立关联时向 PCRF 上报应用事件检测能力； 当然也可以是 PCRF向所述 PCEF发送获取 能力信息请求， PCRF接收 PCEF返回的获取能力信息响应中携带所 述事件检测能力信息。 PCRF根据 PCEF的应用事件检测能力向 PCEF 下发游戏应用事件的订阅； 用户设备开始网络游戏业务时， PCEF检 测到游戏应用事件， 向 PCRF上报该事件； 根据检测上报结果 PCRF 可以对游戏应用实施动态策略控制。本实施例具体实现过程如图 3所 示， 包括：
步骤 S301 , PCEF向 PCRF上报 Diameter CCR (信用控制请求） 消息， 该消息中携带所有支持的应用事件检测能力， 消息格式如下：
<CC-Request>：: = < Diameter Header: 272, REQ, PXY >
< Session-Id >
* [ Application-Deal-Capability ]
其中， Diameter CCR消息携带了多个 Application-Deal-Capability AVP,分别有不同的取值，表示 PCEF支持针对 Web应用、 FTP应用、 流媒体应用、 游戏应用、 BT下载的应用处理能力。 其中描述游戏应 用处理能力的 Application-Deal-Capability AVP形式如下：
Application-Deal-Capability ::= <AVP Header： χ χ χ>
{ Application-ID }
[ App-Event-Detect ]
Application-ID AVP表示游戏应用； App-Event-Detect取值为 start ( 0 )、 stop ( 1 )、 modify ( 3 )分别表示 PCEF支持游戏应用启动、 终 止、 更改的事件检测。
步骤 S302, 根据 PCEF上报的应用事件检测能力， PCRF获知 PCEF 支持对游戏应用事件的检测， 通过 Diameter CCA ( Diameter Credit-Control- Answer , Diameter信用控制应答） 消息向 PCEF订阅 游戏应用启动事件。
步骤 S303 , 用户设备开始网络游戏业务。
步骤 S304 , PCEF检测订阅的应用事件。
步骤 S305 , PCEF将检测到的游戏应用事件通过 Diameter RAR ( Diameter Re-Auth-Request, Diameter 重新 4受权请求） 消息上才艮给 PCRF。
步骤 S306, PCRF根据上报结果以及其他策略上文信息对游戏应 用制定策略， 并通过 Diameter RAA (重新授权应答消息） 消息下发 给 PCEF。
步骤 S307, PCEF根据下发的策略对游戏业务实施策略控制。 本发明实施例三中 , PCEF在 PCEF和 PCRF建立关联时向 PCRF 上报 PCEF应用控制能力； 当然也可以是 PCRF向所述 PCEF发送获 取能力信息请求， PCRF接收 PCEF返回的获取能力信息响应中携带 所述应用控制能力信息。 PCRF根据 PCEF的应用控制能力并结合其 他策略上下文信息为 PCEF制定相应的控制策略； PCEF可以根据控 制策略对 PCEF上开展的业务实施应用控制。该实施例的实现过程如 图 4所示， 包括：
步骤 S401 , PCEF向 PCRF上报 Diameter CCR消息 , 该消息中 携带 PCEF应用控制能力， 消息格式如下：
<CC-Request>：: = < Diameter Header: 272, REQ, PXY >
< Session-Id >
* [ Application-Deal-Capability ]
其中， Diameter CCR消息携带了多个 Application-Deal-Capability AVP,分别有不同的取值，表示 PCEF支持针对 Web应用、 FTP应用、 流媒体应用、 游戏应用、 BT下载的应用处理能力。 描述应用控制能 力的 Application-Deal-Capability AVP形式 ¾口下：
Application-Deal-Capability ::= <AVP Header： χ χ χ>
{ Application-ID }
[ App-Control ]
Application-ID AVP 表示某一具体应用， 例如 BT 下载； App-Control取值为 Connect-Number ( 0 )表示 PCEF支持对业务连接 数的控制。
步骤 S402, PCRF根据 PCEF上报的应用控制能力， 并结合其他 策略上下文信息完成应用控制策略的制定。
步骤 S403 , PCRF将应用控制策略通过 Diameter CCA消息下发 给 PCEF执行。
步骤 S404, PCEF执行应用控制策略。 对 PCEF上开展的业务的 连接数按照策略进行控制。
本发明实施例四中， PCEF在如 PCEF 和 PCRF 建立关联时向 PCRF上报 PCEF 网络安全防护能力。 当然也可以是 PCRF 向所述 PCEF发送获取能力信息请求， PCRF接收 PCEF返回的获取能力信 息响应中携带所述网络安全防护能力信息。 用户设备在建立 IP-CAN 会话时， PCRF才艮据 PCEF的网络安全防护能力、用户设备的能力（例 如操作系统、 操作系统补丁、 防病毒软件等）并结合其他策略上下文 信息， 进行安全策略决策， 并下发给 PCEF执行； PCEF可以根据安 全策略， 为网络提供安全防护能力。 具体过程如图 5所示， 包括： 步骤 S501 , PCEF通过 Diameter CCR消息向 PCRF上报 PCEF 的安全防护能力；
<CC-Request>：: = < Diameter Header: 272, REQ, PXY >
< Session-Id >
[ Security-Defend-Capability ]
其中 Security-Defend-Capability 取值为 ACL-Control ( 0 )、 Firewall-Control ( 1 )分别表示 PCEF支持准入控制列表的控制、 防火 墙模式选择等安全防护能力。
步骤 S502, PCRF向 PCEF返回确认消息 Diameter CCA (信用控 制应答消息）。
步骤 S503 , 用户设备向 PCEF发出 IP-CAN会话建立请求。 步骤 S504, PCEF收到 IP-CAN会话建立请求后， 向 PCRF发出 Diameter RAR请求， 为 IP-CAN会话建立策略决策。 IP-CAN为当用 户在接入网络内漫游（位置改变时）仍能保存 IP业务连续性业务的 接入网络，比如 GPRS网络， I-WLAN网络等； IP-CAN bearer( IP-CAN 承载）， 具有明确速率， 延迟和误比特率的 IP传输路径（该路径指的 是接入网到 PCEF ( GW )之间）， 对于 GPRS来说 IP-CAN bearer对 应 PDP上下文； IP-CAN session ( IP-CAN会话）， 是 UE和 PDN (分 组数据网， 比如 internet )标识之间的连接关系， 该连接关系通过 UE 的 IP地址和 UE的标识来识别。 只要 UE分配了 IP地址并且能被 IP 网络识别， 则 IP-CAN存在， IP-CAN会话可以包含一到多个 IP-CAN 承载。
步骤 S505 , PCRF根据 PCEF的网络安全防护能力， 并结合其他 策略上下文信息， 进行准入控制列表控制、 防火墙模式选择的安全策 略决策。
步骤 S506, PCRF将安全策略通过 Diameter RAA消息下发给 PCEF。
步骤 S507, PCEF执行相应的安全策略。
步骤 S508 , PCEF向用户设备返回 IP-CAN会话建立成功的响应。 本发明实施例还提供了一种 PCRF, 如图 6所示， 包括： 能力信 息接收单元 100, 用于获取 PCEF的能力信息； 处理单元 300, 与能 力信息接收单元 100连接， 用于根据所述能力信息进行处理； 能力信 息获取请求单元 200, 用于向所述 PCEF发送获取能力信息请求， 使 所述 PCEF上报能力信息。 其中， 所述能力信息包括但不限于应用事 件检测能力、 应用控制能力和安全防护能力中的一种或几种。
针对上述不同的能力信息， 所述处理单元 300具体可以包括： 第 一处理子单元 310, 用于根据所述应用事件检测能力向 PCEF订阅应 用事件； 和 /或第二处理子单元 320, 用于根据所述应用控制能力下发 相应的应用控制策略给 PCEF; 和 /或第三处理子单元 330, 用于根据 所述安全防护能力下发相应的安全控制策略给 PCEF。
本发明的实施例中， 通过让 PCEF 事先上报自身的能力， 使得 PCRF在获知 PCEF能力的情况下，为业务进行策略决策或者向 PCEF 发起相关应用事件订阅， 从而解决了由于 PCRF无法获知 PCEF能力 而可能造成订阅错误、 决策失效等问题。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解 到本发明， 可以通过硬件实现， 也可以借助软件加必要的通用硬件平 台的方式来实现。基于这样的理解， 本发明的技术方案可以以软件产 品的形式体现出来 ,该软件产品可以存储在一个计算机可读存储介质
(可以是 CD-ROM, U盘， 移动硬盘等） 中， 包括若干指令用以使 得一台计算机设备（可以是个人计算机， 服务器， 或者网络设备等） 执行本发明各个实施例所述的方法。
总之， 以上所述仅为本发明的较佳实施例而已， 并非用于限定本 发明的保护范围。 凡在本发明的精神和原则之内所作的任何修改、 等 同替换、 改进等， 均应包含在本发明的保护范围之内。

Claims

权利要求
1、 一种获取策略和计费执行功能能力的方法， 其特征在于， 包 括：
策略控制和计费规则功能实体 PCRF 获取策略和计费执行功能 PCEF的能力信息；
所述 PCRF根据所述能力信息进行处理。
2、 如权利要求 1所述获取策略和计费执行功能能力的方法， 其 特征在于， 所述 PCRF获取 PCEF的能力信息具体包括：
所述 PCRF接收所述 PCEF上报的消息， 所述消息中携带所述能 力信息。
3、 如权利要求 2所述获取策略和计费执行功能能力的方法， 其 特征在于， 所述 PCRF接收所述 PCEF上报的消息之前还包括： 所述 PCRF向所述 PCEF发送获取能力信息请求。
4、 如权利要求 1至 3中任一项所述获取策略和计费执行功能能 力的方法， 其特征在于， 所述能力信息至少包括以下一种： 应用事件 检测能力、 应用控制能力和安全防护能力。
5、 如权利要求 4所述获取策略和计费执行功能能力的方法， 其 特征在于， 当所述能力信息为应用事件检测能力时， 所述 PCRF根据 所述能力信息进行处理具体包括：
所述 PCRF根据所述应用事件检测能力向 PCEF订阅应用事件。
6、 如权利要求 4所述获取策略和计费执行功能能力的方法， 其 特征在于， 当能力信息为应用控制能力时， 所述 PCRF根据所述能力 信息进行处理具体包括：
所述 PCRF根据所述应用控制能力下发相应的应用控制策略给 PCEF。
7、 如权利要求 4所述获取策略和计费执行功能能力的方法， 其 特征在于， 当能力信息为安全防护能力时， 所述 PCRF根据所述能力 信息进行处理具体包括： 所述 PCRF根据所述安全防护能力下发相应的安全控制策略给 PCEF。
8、 如权利要求 1所述获取策略和计费执行功能能力的方法， 其 特征在于，所述策略控制和计费规则功能实体 PCRF获取策略和计费 执行功能 PCEF的能力信息具体包括：
所述 PCRF接收所述 PCEF上报的 Diameter信用控制请求消息， 所述 Diameter信用控制请求消息中携带所有支持的应用事件检测能 力；
所述 PCRF根据所述能力信息进行处理具体包括：
根据所述 PCEF 上报的应用事件检测能力， 所述 PCRF 通过 Diameter信用控制应答消息向 PCEF订阅游戏应用启动事件。
9、 一种计算机程序产品， 其特征在于， 所述计算机程序产品包 括计算机程序代码， 当所述计算机程序代码被一个计算机执行的时 候， 所述计算机程序代码可以使得所述计算机执行权利要求 1-3 , 5-8 中任意一项的步骤。
10、 一种计算机可读存储介质， 其特征在于， 所述计算机存储计 算机程序代码， 当所述计算机程序代码被一个计算机执行的时候， 所 述计算机程序代码可以使得所述计算机执行权利要求 1-3 , 5-8中任意 一项的步骤。
11、 一种 PCRF, 其特征在于， 包括：
能力信息接收单元， 用于获取 PCEF的能力信息；
处理单元， 与所述能力信息接收单元连接，接收能力信息接收单 元获取的所述 PCEF能力信息， 根据所述能力信息进行处理。
12、如权利要求 11所述 PCRF,其特征在于，所述 PCRF还包括： 能力信息获取请求单元，用于向所述 PCEF发送获取能力信息请 求， 使所述 PCEF上报能力信息。
13、 如权利要求 11或 12所述 PCRF, 其特征在于， 所述能力信 息至少包括以下一种： 应用事件检测能力、应用控制能力和安全防护 能力。
14、 如权利要求 13所述 PCRF, 其特征在于， 所述处理单元具 体包括：
第一处理子单元，用于根据所述应用事件检测能力向 PCEF订阅 应用事件； 和 /或，
第二处理子单元，用于根据所述应用控制能力下发相应的应用控 制策略给 PCEF; 和 /或，
第三处理子单元，用于根据所述安全防护能力下发相应的安全控 制策略给 PCEF。
PCT/CN2008/072592 2007-09-30 2008-09-28 Procédé et dispositif pour obtenir la capacité de fonction d'application de politique et de facturation WO2009046678A1 (fr)

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