WO2010118654A1 - 一种策略授权方法、装置及系统 - Google Patents
一种策略授权方法、装置及系统 Download PDFInfo
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- WO2010118654A1 WO2010118654A1 PCT/CN2010/070840 CN2010070840W WO2010118654A1 WO 2010118654 A1 WO2010118654 A1 WO 2010118654A1 CN 2010070840 W CN2010070840 W CN 2010070840W WO 2010118654 A1 WO2010118654 A1 WO 2010118654A1
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- policy
- pcef
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0894—Policy-based network configuration management
Definitions
- the present invention claims to be submitted to the Chinese Patent Office on April 16, 2009, and the application number is 200910133590. 4.
- the Chinese patent application entitled “A Strategy Authorization Method, Apparatus and System” Priority is hereby incorporated by reference in its entirety.
- TECHNICAL FIELD The present invention relates to the field of communications technologies, and in particular, to a policy authorization method, apparatus, and system.
- PCC Policy Control and Charging
- 3GPP 3rd Generation Partnership Project
- IP Internet Protocol
- connection Access Network policy control and charging control function framework other communication standards have similar architecture, such as 3GPP2 (3rd Generation Partnership Project 2) SBBC (Service Based Bearer Control), WiMAX ( Worldwide Interoperability for Microwave Access, Microwave Access Global Interoperability), PCC, and NGN (Next Generation Network) RACS (Resource and Admission Control Subsystem) are used to achieve similar or identical The structure of the mechanism.
- the PCC is used to implement resource admission control, and implements certain service quality control and charging policy control mainly for the characteristics of the mobile access network.
- the main functions provided include: Based on the user's subscription information, the flow policy control and charging are implemented.
- the PCC architecture consists of two parts: a Policy Charging Rule Function (PCRF) for policy control and a Policy Charging Enforcement Function (PCEF) for policy enforcement.
- PCRF Policy Charging Rule Function
- PCEF Policy Charging Enforcement Function
- the PCRF is responsible for generating a policy control charging rule (PCC rule) for the bearer control and charging according to at least one of the user subscription information, the service information, and the bearer information, and is provided to the PCEF for short; the PCEF is responsible for the
- the PCC rules of the PCRF perform policy flow based policy control and/or billing.
- the PCC is located between the service control layer and the bearer layer, and shields the service control layer from the specific technical and topology information of the bearer layer.
- the PCC receives the QoS (Quality of Service) authorization parameters related to the service from the service control layer, and then combines with the control policy, the network topology information, and the like, and converts the service QoS parameters into IP QoS parameters, and then provides the relevant bearer layer.
- Nodes can also be provided to service gateway nodes, such as home agents. These nodes implement corresponding policy control and billing based on the received information and their own functions.
- policy control mainly refers to gating (Gating Control) and QoS Control, which is Flow Based Charging (FBC).
- PCEF's policy control and charging capabilities such as QoS control capabilities and charging capabilities, may vary.
- the PCRF cannot obtain the PCEF capability information, and cannot generate different policy rules according to the different capabilities of the PCEF, that is, different PCC rules, which further causes the PCEF to fail to execute the generated policy. rule. Summary of the invention
- Embodiments of the present invention provide a policy authorization method, apparatus, and system for generating different policy rules according to different capabilities of a policy enforcement entity, thereby implementing different policy authorizations.
- An embodiment of the present invention provides a policy authorization method, where the method includes:
- the embodiment of the invention further provides a policy authorization device, where the device includes:
- a receiving requesting unit configured to receive a session request sent by the policy enforcement entity that includes the capability information of the policy enforcement entity
- a policy rule generating unit configured to generate a policy rule according to the capability information
- a policy rule sending unit configured to send the policy rule to the policy enforcement entity.
- the embodiment of the invention further provides a policy authorization system, including:
- a policy execution entity a session request for transmitting the capability information of the policy enforcement entity; a policy authorization entity: receiving a session request that includes the policy execution entity capability information sent by the policy execution entity; generating, according to the capability information Policy rule; sending the policy rule to the policy enforcement entity.
- FIG. 1 is a flow chart showing a policy authorization method according to Embodiment 1 of the present invention.
- Figure 2 is a flow chart showing the policy authorization method of Embodiment 2 of the present invention.
- Figure 3 is a flow chart showing the policy authorization method of Embodiment 3 of the present invention.
- FIG. 4 is a flow chart showing policy authorization when a handover occurs in Embodiment 4 of the present invention.
- FIG. 5 is a block diagram showing the structure of an access network policy authorization apparatus according to Embodiment 5 of the present invention.
- FIG. 6 is a structural block diagram of an access network policy authorization apparatus according to Embodiment 6 of the present invention.
- BEST MODE FOR CARRYING OUT THE INVENTION In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the present invention will be further described in detail below with reference to the embodiments and drawings. The illustrative embodiments of the present invention and the description thereof are intended to explain the present invention, but are not intended to limit the invention.
- FIG. 1 is a flowchart of an access network policy authorization method according to Embodiment 1 of the present invention. As shown in FIG. 1, the policy authorization method in Embodiment 1 of the present invention includes:
- S101 Receive a session request that is sent by the policy enforcement entity and includes capability information of the policy enforcement entity.
- S102 Generate a policy rule according to the capability information.
- the policy enforcement entity sends its capability information to the policy authorization entity in a service establishment or service modification request.
- the policy enforcement entity may be an Access Policy Charging Enforcement Function (A-PCEF) or a Core Network Policy Charging Enforcement Entity (C-PCEF), and the policy authorization entity may be a policy charging rule function entity ( Policy Charging Rule Function: PCRF).
- A-PCEF Access Policy Charging Enforcement Function
- C-PCEF Core Network Policy Charging Enforcement Entity
- PCRF Policy Charging Rule Function
- the policy authorization entity generates a policy rule according to the capability information, that is, generates a different policy rule for the policy enforcement entity with different capabilities, and sends the policy rule to the policy execution entity, and authorizes the policy execution entity to use the policy rule. Perform its corresponding function.
- the policy authorization entity is a home hPCRF
- the policy enforcement entity is an A-PCEF or a C-PCEF, but the embodiment of the present invention is not limited thereto.
- the home hPCRF performs policy authorization according to the capability information of the A-PCEF or the C-PCEF, and may also refer to other information, such as at least one of the following information: terminal subscription information, service information, network configuration policy, etc., that is, according to the above information generation.
- Policy rules may include policy control and charging control, and the policy control package Including Gating Control and QoS Control, the charging control refers to Flow Based Charging (FBC), and sends a generated Policy Rule (Policy and Charging Control), that is, a PCC rule to the A-PCEF or C-PCEF enables the A-PCEF or C-PCEF to perform a corresponding function according to the policy rule, that is, to provide a corresponding service to the terminal.
- FBC Flow Based Charging
- Policy and Charging Control Policy and Charging Control
- the home hPCRF can learn the PCEF capabilities of each policy enforcement entity, and generate appropriate policy rules according to different policy execution entity PCEF capabilities, thereby implementing flexible and appropriate policy control, and better providing services for the terminal.
- the policy authorization entity can generate a corresponding policy rule according to the capability of the policy enforcement entity, so that the policy execution entity performs the corresponding function according to the policy rule, thereby providing the terminal with a more practical and convenient service.
- FIG. 2 is a signaling diagram of an access network policy authorization method according to Embodiment 2 of the present invention. As shown in FIG. 2, in Embodiment 2 of the present invention,
- the C-PCEF receives the IP-CAN session establishment request
- the C-PCEF After receiving the above IP-CAN (IP access network) session establishment request, the C-PCEF sends an IP-CAN session establishment request to the vPDF (visited policy distribution function) / vPCRF in the roaming network ( The visited policy Charging Rule Function, the vPCRF forwards the above IP-CAN session establishment request to the home PCRF (hPCRF) entity; the C-PCEF carries its own capability information to the hPCRF in the above IP-CAN session establishment request.
- vPDF visitor policy distribution function
- vPCRF roaming network
- the visited policy Charging Rule Function the vPCRF forwards the above IP-CAN session establishment request to the home PCRF (hPCRF) entity; the C-PCEF carries its own capability information to the hPCRF in the above IP-CAN session establishment request.
- the capability information may include one or more of the following: whether to support QoS control, whether the QoS control is flow-based QoS control or IP layer QoS control; whether charging is supported, whether charging is an online charging mode or an offline charging mode Whether it is flow-based charging or IP session-based charging;
- the hPCRF performs a policy authorization generation policy rule according to the C-PCEF capability information, that is, a PCC rule.
- the generation policy rule may also refer to the following information: terminal subscription information, service information, network configuration policy, and other information.
- the hPCRF sends an IP-CAN session establishment response to the C-PCEF through the vPDF/vPCRF, and sends the generated PCC rule to the C-PCEF;
- C-PCEF receives the above PCC rules, executes the PCC rules, and returns an IP-CAN session.
- the hPCRF after receiving the IP-CAN session establishment request, extracts the capability information of the C-PCEF and one or more of the following information from the session establishment request: terminal subscription information, service information, Other information such as the network configuration policy, and the PCC rules are generated according to the information.
- the hPCRF can store multiple sets of PCC rules according to different policies, such as capability information, terminal subscription information, service information, and network configuration policy. After the session establishment request, the corresponding PCC rule is selected from the stored PCC rules.
- the hPCRF can generate different PCCs according to the capabilities of the C-PCEF, so that the C-PCEF performs corresponding functions according to the PCC, so that the policy authorization is more flexible, thereby providing the terminal with more practical and convenient. Service.
- FIG. 3 is a signaling diagram of an access network policy authorization method according to Embodiment 3 of the present invention. As shown in FIG. 3, in Embodiment 3 of the present invention,
- A-PCEF receives an IP-CAN bearer setup request
- the A-PCEF After receiving the IP-CAN bearer setup request, the A-PCEF sends a gateway control session setup request message to the vPDF/vPCRF in the roaming network, and the vPCRF forwards the message to the hPCRF entity; the A-PCEF carries the capability information in the message.
- the capability information may include one or more of the following: Whether to support QoS control, whether QoS control is flow-based QoS control or IP layer QoS control; Whether charging is supported, whether charging is online charging mode or offline metering Fee mode, whether it is flow-based charging or IP session-based charging;
- the hPCRF performs policy authorization according to the capability information of the A-PCEF and other information (such as terminal subscription information, service information, network configuration policy, etc.) to generate a policy rule.
- the hPCRF forwards the sending gateway control session establishment response message to the A-PCEF through the vPDF/vPCRF, and sends the generated policy rule to the A-PCEF;
- the A-PCEF performs the receipt of the policy rule and sends an IP-CAN bearer setup response.
- Embodiment 2 of the present invention i.e., C-PCEF establishes an IP-CAN session process
- A-PCEF establishes a session process
- the process of Embodiment 2 may be triggered.
- the completion of Embodiment 2 not only the generated policy rule is sent to the C-PCEF, but also the policy rule may be sent to the A-PCEF.
- the hPCRF can perform different policy authorization according to the capability of the A-PCEF, so that the A-PCEF performs the corresponding function according to the policy authorization, thereby providing the terminal with more practical and convenient services.
- FIG. 4 is a signaling diagram of performing access network policy authorization when a handover occurs according to Embodiment 4 of the present invention.
- Figure 4 As shown, the method includes:
- the new A-PCEF sends a gateway control session establishment request message to the vPDF/vPCRF in the roaming network, and the vPCRF forwards the gateway control session establishment request message to the home hPCRF entity; A-PCEF controls at the above gateway
- the session establishment request message carries the capability information to the hPCRF.
- the capability information includes, for example, the capability information may include one or more of the following: whether to support QoS control, whether the QoS control is flow-based QoS control or IP layer QoS control; Whether billing is supported, whether billing is online billing mode or offline billing mode, whether it is flow-based charging or IP session-based charging;
- the hPCRF performs policy authorization according to the foregoing capability information to generate a new policy rule, for example, when the A-PCEF is switched, generating a new policy rule according to the capability information indicating the switched A-PCEF;
- the hPCRF forwards the session control response message to the A-PCEF through the vPCRF forwarding gateway, and sends the generated new policy rule to the A-PCEF; if the A-PCEF receives the new policy rule, the A-PCEF performs a new Policy rule
- the hPCRF sends an IP-CAN session modification request to the C-PCEF, and the new policy rule is sent to the C-PCEF for execution, and the new policy rule is forwarded by the vPDF/vPCRF;
- the C-PCEF performs the received new policy rule, and executes the new policy rule, and sends an IP-CAN session modification response message to the hPCRF, and the modification response message is forwarded by vPDF/vPCRF.
- the A-PCEF and the C-PCEF are both served by the terminal, but are located on different network elements.
- the A-PCEF is located at the gateway.
- the C-PCEF is located in the home agent HA (Home Agent), border gateway, or a separate network element.
- the hPCRF when the A-PCEF is switched, the hPCRF generates a new policy rule for the A-PCEF, and the C-PCEF does not necessarily generate a new policy rule, only when the policy decision input condition If the policy rules generated for the A-PCEF are different before and after the A-PCEF switchover, the policy rules need to be re-created for the C-PCEF. Otherwise, no re-generation is required. Also, in the above 405, the IP-CAN session modification request is transmitted to the C-PCEF only when the new policy rule is regenerated.
- Embodiment 4 of the present invention since a new policy rule is generated when the policy rule to be generated is different from the last generated policy rule, and an IP-CAN session modification request is transmitted, unnecessary operations are avoided.
- FIG. 5 is a structural block diagram of an access network policy authorization apparatus according to Embodiment 5 of the present invention.
- the access network policy authorization apparatus in Embodiment 5 of the present invention includes: a receiving request unit 501, configured to receive a policy execution entity a session establishment request that includes the policy enforcement entity capability information, a policy rule generation unit 502, configured to generate a policy rule according to the capability information, and a policy rule sending unit 503, configured to send the policy rule to the policy Execution entity.
- the receiving request unit 501 receives a session request, such as an IP-CAN session establishment/modification request, transmitted by the policy enforcement entity, including the policy enforcement entity capability information, and the IP-CAN session establishment/modification
- the request includes capability information indicating the capability of the policy enforcement entity
- the policy rule generation unit 502 performs policy authorization according to the capability information, generates a policy rule, and finally sends the policy rule to the policy by the policy rule sending unit 503.
- the execution entity enables the policy to execute the policy rule and provide the corresponding service to the terminal.
- the policy authorization device may be a PCRF
- the policy enforcement entity may be an A-PCEF or a C-PCEF
- the session request may be an IP-CAN session establishment request or a gateway control session establishment request.
- the policy authorization entity may generate different policy rules according to different capabilities of the policy enforcement entity, so that the policy execution entity performs corresponding functions according to the policy rules, thereby providing the terminal with more practical and convenient functions. service.
- FIG. 6 is a structural block diagram of an access network policy authorization apparatus according to Embodiment 6 of the present invention.
- the access network policy authorization apparatus of Embodiment 6 of the present invention is compared with the foregoing Embodiment 5, and the policy rule sending unit is used to The policy rule is sent to the access network policy enforcement entity A-PCEF, and the policy rule modification unit 604 is further configured to send the policy rule to the core network policy enforcement entity C-PCEF.
- the other structures are the same as those of the access network policy authorization device of the fifth embodiment of the present invention, and therefore will not be described herein.
- the A-PCEF for the terminal service is switched, and the new A-PCEF is switched.
- the new A-PCEF sends a gateway control session establishment request message to the access network.
- the policy authorization device PCRF the A-PCEF carries the capability information of the A-PCEF in the gateway control session establishment request message, where the capability information includes, for example, online charging indication information, offline charging indication information, and charging capability indication information, and The charging capability indication information includes no charging indication information, flow based charging indication information, and IP session charging indication information.
- the access network policy authorization device sends a gateway control session establishment response message to the A-PCEF, and carries the generated new policy authorization to the A-PCEF in the message; if the A-PCEF receives the new policy information, the A-PCEF Implement a new policy and initiate an IP-CAN bearer modification process.
- the policy rule modification unit 604 sends an IP-CAN session modification request to the C-PCEF, and sends the modified policy rule to the C-PCEF for execution. After the C-PCEF receives the new policy rule, the new policy rule can be executed.
- the policy rule needs to be regenerated for the C-PCEF. And send an IP-CAN session modification request, thus avoiding unnecessary operations.
- the embodiment of the invention also discloses a policy authorization system, including:
- a policy execution entity a session request for transmitting the capability information of the policy enforcement entity; a policy authorization entity: receiving a session request that includes the policy execution entity capability information sent by the policy execution entity; generating, according to the capability information Policy rule; sending the policy rule to the policy enforcement entity.
- the policy enforcement entity may be a PCEF, and the policy authorization entity may be a PCRF.
- the PCRF entity can learn the PCEF capability of the access network, and generate an appropriate policy rule according to the policy execution entity capability of the PCEF entity of the access network, thereby implementing flexible and appropriate policy control, and better providing services for the terminal.
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Description
一种策略授权方法、 装置及系统 本申请要求于 2009年 4月 16日提交中国专利局、申请号为 200910133590. 4、发明 名称为 "一种策略授权方法、 装置及系统"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 本发明涉及通信技术领域, 具体地讲是一种策略授权方法、 装置及系统。 背景技术 策略控制和计费 (Policy Control and Charging, PCC )框架是第三代合作伙伴计划 ( 3rd Generation Partnership Project, 3GPP ) 定义的一个适用于各种网际协议(Internet Protocol, IP)连通接入网络(Connectivity Access Network)的策略控制和计费控制功能 框架,其他通信标准也有类似的架构, 例如 3GPP2 ( 3rd Generation Partnership Project 2 ) 的 SBBC ( Service Based Bearer Control, 基于业务的承载控制) 、 WiMAX ( Worldwide Interoperability for Microwave Access, 微波接入全球互操作) 的 PCC、 和 NGN (Next Generation Network,下一代网络)的 RACS (Resource and Admission Control Subsystem, 资源接纳控制子系统), 都是用来实现类似或相同机制的架构。 PCC用于完成资源接纳 控制, 主要针对移动接入网络的特性实现一定的服务质量控制和计费策略控制, 提供的 主要功能包括: 基于用户的签约信息实现基于流策略控制及计费。
PCC架构包括两部分,分别是用于策略控制的 PCRF(Policy Charging Rule Function, 策略计费规则功能)和用于策略执行的 PCEF (Policy Charging Enforcement Function, 策略计费执行功能) 。 PCRF负责根据用户签约信息、 业务信息、 承载信息中的至少一 项, 生成用于承载控制和计费的策略控制计费规则 (PCC rule ) , 简称策略规则, 并提 供给 PCEF ; PCEF负责根据来自 PCRF的 PCC规则执行基于服务流的策略控制和 /或计 费。
PCC位于业务控制层与承载层之间,向业务控制层屏蔽承载层的具体技术和拓扑信 息。 PCC从业务控制层接收与业务相关的 QoS ( Quality of Service)授权参数, 然后与 控制策略、 网络的拓扑信息等相结合, 并将业务 QoS参数转化为 IP QoS参数, 然后提 供给相关的承载层节点, 还可提供给业务网关节点, 如, 家乡代理。 这些节点根据收到 的信息和自身的功能实现相应的策略控制及计费。其中,策略控制主要是指门控(Gating
Control)和 QoS控制(QoS Control),计费控制是指基于流的计费(Flow Based Charging, FBC) 。
在实际网络部署中, PCEF的策略控制及计费能力, 如 QoS控制能力和计费能力可 能会有所不同。
在实现本发明过程中,发明人发现现有技术中存在如下问题: PCRF无法获知 PCEF 能力信息, 无法根据 PCEF不同能力生成不同的策略规则、 即不同的 PCC规则, 进一步 导致 PCEF无法执行生成的策略规则。 发明内容
本发明的实施例提供一种策略授权方法、 装置及系统, 以根据策略执行实体的不同 能力生成不同的策略规则, 进而实现不同的策略授权。
本发明实施例提供一种策略授权方法, 所述方法包括:
接收策略执行实体发送的包含所述策略执行实体能力信息的会话请求;
根据所述能力信息生成策略规则;
将所述策略规则发送给所述策略执行实体。
本发明实施例又提供一种策略授权装置, 所述装置包括:
接收请求单元,用于接收策略执行实体发送的包含所述策略执行实体能力信息的会 话请求;
策略规则生成单元, 用于根据所述能力信息生成策略规则;
策略规则发送单元, 用于将所述策略规则发送给所述策略执行实体。
本发明实施例又提供一种策略授权系统, 包括:
策略执行实体: 用于发送的包含所述策略执行实体能力信息的会话请求; 策略授权实体:接收所述策略执行实体发送的包含所述策略执行实体能力信息的会 话请求; 根据所述能力信息生成策略规则; 将所述策略规则发送给所述策略执行实体。
本发明实施例的有益效果在于, 因为采用了根据不同的策略执行实体生成不同的策 略规则并授权,所以克服了现有技术中的不能根据策略执行实体能力生成策略规则和授 权的问题, 进而使得策略授权更加灵活。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 并不构
成对本发明的限定。 在附图中:
图 1所示的是本发明实施例 1的策略授权方法的流程图。
图 2所示的是本发明实施例 2的策略授权方法的流程图。
图 3所示的是本发明实施例 3的策略授权方法的流程图。
图 4所示的是本发明实施例 4的发生切换时进行策略授权的流程图。
图 5所示的是本发明实施例 5的接入网策略授权装置的结构框图。
图 6所示的是本发明实施例 6的接入网策略授权装置的结构框图。 具体实施方式 为使本发明的目的、 技术方案和优点更加清楚明白, 下面结合实施方式和附图, 对 本发明做进一步详细说明。 在此, 本发明的示意性实施方式及其说明用于解释本发明, 但并不作为对本发明的限定。
实施例 1
图 1所示的是本发明实施例 1的接入网策略授权方法的流程图, 如图 1所示, 本发 明实施例 1的策略授权方法包括:
S101 : 接收策略执行实体发送的包含所述策略执行实体能力信息的会话请求;
S102: 根据所述能力信息生成策略规则;
S103: 将所述策略规则发送给所述策略执行实体。
在一个具体实施例中,策略执行实体将自身能力信息在业务建立或业务修改请求中 发送到策略授权实体。 策略执行实体可以为接入网策略计费执行实体 (Access Policy Charging Enforcement Function: A-PCEF) 或核心网策略计费执行实体 (C-PCEF) , 策 略授权实体可以为策略计费规则功能实体 (Policy Charging Rule Function: PCRF) 。
策略授权实体根据所述能力信息生成策略规则, 即对具有不同能力的策略执行实体 生成不同的策略规则, 并将该策略规则发送给所述策略执行实体, 授权该策略执行实体 以所述策略规则执行其相应的功能。
在一个具体实施例中, 以策略授权实体是家乡 hPCRF, 策略执行实体是 A-PCEF或 C-PCEF为例进行说明, 但本发明实施例并不限于此。
例如,家乡 hPCRF根据 A-PCEF或 C-PCEF的能力信息进行策略授权,还可参考其 他信息, 如以下信息至少一种: 终端签约信息、 业务信息、 网络配置策略等, 即根据上 述的信息生成策略规则, 所述策略规则可以包括策略控制和计费控制, 且该策略控制包
括门控 (Gating Control) 和 QoS 控制, 该计费控制是指基于流的计费 (Flow Based Charging: FBC) , 并将生成的策略规则 (Policy and Charging Control ) , 即 PCC 规则发送到所述 A-PCEF或 C-PCEF, 使所述 A-PCEF或 C-PCEF根据该策略规则执行 相应的功能, 即向终端提供相应的服务。
在本发明实施例 1中, 家乡 hPCRF能够获知各策略执行实体 PCEF能力, 并根据 不同的策略执行实体 PCEF能力生成合适的策略规则, 实现灵活和适当的策略控制, 更 好地为终端提供服务。
在本发明实施例 1中, 由于策略授权实体可以根据策略执行实体的能力来生成相应 的策略规则,使策略执行实体根据该策略规则执行相应的功能,从而为终端提供更实用、 更方便的服务。
实施例 2
图 2所示的是本发明实施例 2的接入网策略授权方法的信令图, 如图 2所示, 在本 发明实施例 2中,
201.C-PCEF收到 IP-CAN会话建立请求;
202.C-PCEF收到上述 IP-CAN (IP接入网)会话建立请求后, 发送 IP-CAN会话建 立请求给漫游网络中的 vPDF (visited Policy Distribution Function,拜访地策略分发实体) /vPCRF (visited Policy Charging Rule Function, 策略计费规则功能实体) , vPCRF将上 述 IP-CAN会话建立请求转发给家乡 PCRF (hPCRF)实体; C-PCEF在上述 IP-CAN会 话建立请求中携带自身能力信息给 hPCRF,该能力信息可以包括一下一种或多种:是否 支持 QoS控制, QoS控制是基于流的 QoS控制还是 IP层的 QoS控制; 是否支持计费, 计费是在线计费模式还是离线计费模式, 是基于流的计费还是基于 IP会话(IP Session) 的计费等;
203. hPCRF根据所述 C-PCEF能力信息进行策略授权生成策略规则, 即 PCC规则; 生成策略规则还可参考以下信息:终端签约信息、业务信息、网络配置策略等其他信息。
204.hPCRF通过 vPDF/vPCRF向 C-PCEF发送 IP-CAN会话建立响应, 并将所生成 的上述 PCC规则发送给所述 C-PCEF;
205. C- PCEF收到的上述 PCC规则, 执行该 PCC规则, 并返回 IP-CAN会话建响 应。
其中,在上述 203中, 当 hPCRF接收到所述 IP-CAN会话建立请求后,从该会话建 立请求中提取 C-PCEF的能力信息以及以下一种或多种信息:终端签约信息、业务信息、
网络配置策略等其他信息, 并根据这些信息生成 PCC规则, 例如 hPCRF可以预先根据 不同的策略执行实体的能力信息、 终端签约信息、 业务信息、 网络配置策略等其他信息 存储多套 PCC规则,当收到会话建立请求后从已存储的 PCC规则中选择相应的 PCC规 则。
在本发明实施例 2中, 由于 hPCRF可以根据 C-PCEF的能力来生成不同的 PCC, 使 C-PCEF根据该 PCC执行相应的功能,使得策略授权更加灵活,从而为终端提供更实 用、 更方便的服务。
实施例 3
图 3所示的是本发明实施例 3的接入网策略授权方法的信令图, 如图 3所示, 在本 发明实施例 3中,
301. A-PCEF收到 IP-CAN承载建立请求;
302. A-PCEF收到上述 IP-CAN承载建立请求后,发送网关控制会话建立请求消息给 漫游网络中的 vPDF/vPCRF, vPCRF将消息转发给 hPCRF实体; A-PCEF在消息中携带 自身能力信息给 hPCRF, 该能力信息可以包括一下一种或多种: 是否支持 QoS控制, QoS控制是基于流的 QoS控制还是 IP层的 QoS控制; 是否支持计费, 计费是在线计费 模式还是离线计费模式, 是基于流的计费还是基于 IP会话 (IP Session) 的计费等;
303. hPCRF根据 A-PCEF的能力信息以及其他信息 (如终端签约信息、 业务信息, 网络配置策略等) 进行策略授权, 生成策略规则;
304. hPCRF通过 vPDF/vPCRF转发发送网关控制会话建立响应消息给 A-PCEF , 并 将生成的策略规则发送给 A-PCEF ;
305. A-PCEF执行收到策略规则, 并发送 IP-CAN承载建立响应。
上述本发明实施例 2的过程 (即 C-PCEF建立 IP-CAN会话过程) 可发生在本发明 实施例 3的过程 (A-PCEF建立会话过程) 之后。 即实施例 3过程完成后, 可能会触发实 施例 2的过程, 实施例 2完成后, 不仅将生成的策略规则发给 C-PCEF, 还有可能将策 略规则发给 A-PCEF。
在本发明实施例 3中, 由于 hPCRF可以根据 A-PCEF的能力来进行不同的策略授 权, 使 A-PCEF根据该策略授权执行相应的功能, 从而为终端提供更实用、 更方便的服 务。
实施例 4
图 4所示的是本发明实施例 4的发生切换时进行接入网策略授权的信令图。 如图 4
所示, 该方法包括:
401.为终端服务的 A-PCEF发生切换, 切换到新的 A-PCEF;
402.新的 A-PCEF在切换完成后, 发送网关控制会话建立请求消息给漫游网络中的 vPDF/vPCRF, vPCRF将该网关控制会话建立请求消息转发给家乡 hPCRF实体; A-PCEF 在上述网关控制会话建立请求消息中携带自身能力信息给 hPCRF, 该能力信息例如包 括:该能力信息可以包括一下一种或多种:是否支持 QoS控制, QoS控制是基于流的 QoS 控制还是 IP层的 QoS控制; 是否支持计费, 计费是在线计费模式还是离线计费模式, 是 基于流的计费还是基于 IP会话(IP Session) 的计费等;
403. hPCRF 根据上述能力信息进行策略授权生成新的策略规则, 例如当 A-PCEF 发生切换时, 根据表示切换后的 A-PCEF的能力信息生成新的策略规则;
404. hPCRF通过 vPCRF转发网关控制会话建立响应消息给 A-PCEF,并将所生成的 新的策略规则发送给 A-PCEF; 如果 A-PCEF收到新的策略规则, 则 A-PCEF执行新的 策略规则;
405. hPCRF发送 IP-CAN会话修改请求给 C-PCEF,将新的策略规则下发给 C-PCEF 执行, 所述新的策略规则经过 vPDF/vPCRF转发;
406. C-PCEF执行收到的新的策略规则, 并执行所述新的策略规则, 并发送 IP-CAN 会话修改响应消息给 hPCRF, 所述修改响应消息经过 vPDF/vPCRF转发。
在本发明实施例 4中, 405、 406为可选步骤, 上述 A-PCEF和 C-PCEF都为终端服 务, 只是位于不同的网元上, 例如: 在 WIMAX网络中, A-PCEF位于网关, C-PCEF 位于家乡代理 HA (Home Agent)、边界网关、或是单独的网元。 因此, 在上述 403中: 当 A-PCEF发生切换时, hPCRF会针对 A-PCEF生成的新的策略规则, 而对于 C-PCEF 并不一定会生成新的策略规则,仅当策略决策的输入条件在 A-PCEF切换前后发生变化, 从而导致为 A-PCEF生成的策略规则有所不同时, 才需要为 C-PCEF也重新生成策略规 则, 否则无需重新生成。 并且, 在上述 405中, 只有当重新生成了新的策略规则时才向 C-PCEF发送 IP-CAN会话修改请求。
在本发明实施例 4中, 由于当所要生成的策略规则与上一次生成的策略规则不同时 才生成新的策略规则, 并发送 IP-CAN会话修改请求, 因此避免了不必要的操作。
实施例 5
图 5所示的是本发明实施例 5的接入网策略授权装置的结构框图。如图 5所示, 本 发明实施例 5的接入网策略授权装置包括: 接收请求单元 501, 用于接收策略执行实体
发送的包含所述策略执行实体能力信息的会话建立请求; 策略规则生成单元 502, 用于 根据所述能力信息生成策略规则; 策略规则发送单元 503, 用于将所述策略规则发送给 所述策略执行实体。
在本发明实施例 5中,接收请求单元 501接收由策略执行实体发送的包含所述策略 执行实体能力信息的会话请求, 例如 IP-CAN会话建立 /修改请求, 且该 IP-CAN会话建 立 /修改请求中包含有表示所述策略执行实体能力的能力信息, 策略规则生成单元 502 根据所述能力信息来进行策略授权, 生成策略规则, 最后由策略规则发送单元 503将上 述策略规则发送给所述策略执行实体,使策略执行该策略规则,向终端提供相应的服务。
该策略授权装置可以为 PCRF,策略执行实体可以为 A-PCEF或 C-PCEF,所述会话 请求可以为 IP-CAN会话建立请求或网关控制会话建立请求。
在本发明实施例 5中, 由于策略授权实体可以根据策略执行实体的不同能力来生成 不同的策略规则, 使策略执行实体根据该策略规则执行相应的功能, 从而为终端提供更 实用、 更方便的服务。
实施例 6
图 6所示的是本发明实施例 6的接入网策略授权装置的结构框图。
如图 6所示, 当 A-PCEF为切换后的 A-PCEF时, 本发明实施例 6的接入网策略授 权装置与上述实施例 5相比, 所述策略规则发送单元, 用于将所述策略规则发送给所述 接入网策略执行实体 A-PCEF, 还包括, 策略规则修改单元 604, 还用于将所述策略规 则发送给核心网策略执行实体 C-PCEF。 其他的结构与上述本发明实施例 5的接入网策 略授权装置相同,因此在此不再赘述。在本发明实施例 6中,例如为终端服务的 A-PCEF 发生切换, 切换到新的 A-PCEF, 此时新的 A-PCEF在切换完成后, 发送网关控制会话 建立请求消息给接入网策略授权装置 PCRF, A-PCEF在该网关控制会话建立请求消息 中携带 A-PCEF的能力信息, 该能力信息例如包括: 在线计费指示信息、 离线计费指示 信息以及计费能力指示信息, 而该计费能力指示信息包括不计费指示信息、基于流计费 指示信息以及基于 IP会话计费指示信息。
接入网策略授权装置将网关控制会话建立响应消息给 A-PCEF, 并在消息中携带所 生成的新的策略授权给 A-PCEF; 如果 A-PCEF收到新的策略信息, 则 A-PCEF执行新 的策略并发起 IP-CAN承载修改过程。
并且, 策略规则修改单元 604发送 IP-CAN会话修改请求给 C-PCEF, 将修改后的 策略规则下发给 C-PCEF执行, C-PCEF接收后, 便可执行所述新的策略规则。
在本发明实施例 6中, 仅当策略决策的输入条件在 A-PCEF切换前后发生变 化, 从而导致为 A-PCEF生成的策略规则有所不同时, 才需要为 C-PCEF也重 新生成策略规则, 并发送 IP-CAN会话修改请求, 因此避免了不必要的操作。
本发明实施例还公开了一种策略授权系统, 包括:
策略执行实体: 用于发送的包含所述策略执行实体能力信息的会话请求; 策略授权实体:接收所述策略执行实体发送的包含所述策略执行实体能力信息的会 话请求; 根据所述能力信息生成策略规则; 将所述策略规则发送给所述策略执行实体。
所述策略执行实体可以为 PCEF, 所述策略授权实体可以为 PCRF。
本发明实施例实现 PCRF实体能够获知接入网 PCEF能力, 并根据接入网 PCEF 实体的策略执行实体能力生成合适的策略规则, 实现灵活和适当的策略控制, 更好地为 终端提供服务。 以上所述的具体实施方式, 对本发明的目的、 技术方案和有益效果进行了进一步详 细说明, 所应理解的是, 以上所述仅为本发明的具体实施方式而已, 并不用于限定本发 明的保护范围, 凡在本发明的精神和原则之内, 所做的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。
Claims
1、 一种策略授权方法, 其特征在于, 所述方法包括:
接收策略执行实体发送的包含所述策略执行实体能力信息的会话请求;
根据所述能力信息生成策略规则;
将所述策略规则发送给所述策略执行实体。
2、 根据权利要求 1所述的方法, 其特征在于, 所述方法包括:
接收核心网策略计费执行实体 C-PCEF发送的包含所述 C-PCEF能力信息的 IP-CAN 会话建立请求;
根据所述能力信息生成策略规则;
将所述策略规则发送给所述 C-PCEF。
3、 根据权利要求 1所述方法, 其特征在于, 所述方法包括:
接收接入网策略计费执行实体 A-PCEF发送的包含所述 A-PCEF能力信息的网关控 制会话建立请求;
根据所述能力信息生成策略规则;
将所述策略规则发送给所述 A-PCEF。
4、根据权利要求 3所述方法, 其特征在于, 所述 A-PCEF为切换后的 A-PCEF, 该 方法进一步包括:
发送携带所述策略规则的 IP-CAN会话修改请求给 C-PCEF, 以使得所述 C-PCEF 执行所述策略规则。
5、 一种策略授权装置, 其特征在于, 所述接入网策略授权装置包括:
接收请求单元,用于接收策略执行实体发送的包含所述策略执行实体能力信息的会 话请求;
策略规则生成单元, 用于根据所述能力信息生成策略规则;
策略规则发送单元, 用于将所述策略规则发送给所述策略执行实体。
6、 根据权利要求 5所述的装置, 其特征在于, 所述策略执行实体包括: 接入网策 略计费执行实体 A-PCEF或核心网策略计费执行实体 C-PCEF。
7、根据权利要求 5所述的装置, 其特征在于, 当策略执行实体为切换后的 A-PCEF 时, 该装置进一步包括:
策略规则修改单元, 用于将所述策略规则发送给 C-PCEF。
8、 根据权利要求 5-7任意一项所述的装置, 其特征在于, 所述装置为策略计费规 则功能实体 PCRF。
9、 一种策略授权系统, 其特征在于, 包括:
策略执行实体: 用于发送的包含所述策略执行实体能力信息的会话请求; 策略授权实体:接收所述策略执行实体发送的包含所述策略执行实体能力信息的会 话请求; 根据所述能力信息生成策略规则; 将所述策略规则发送给所述策略执行实体。
10、 如权利要求 9所述的系统, 其特征在于: 所述策略执行实体为 PCEF, 所述策略 授权实体为 PCRF。
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CN101272274A (zh) * | 2007-07-24 | 2008-09-24 | 华为技术有限公司 | 实现策略与计费控制的方法、装置和系统 |
CN101399679A (zh) * | 2007-09-30 | 2009-04-01 | 华为技术有限公司 | 获取策略和计费执行功能能力的方法及设备 |
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