WO2011006408A1

WO2011006408A1 - System, method, and policy and charging rules function (pcrf) entity for policy and charging control

Info

Publication number: WO2011006408A1
Application number: PCT/CN2010/073956
Authority: WO
Inventors: 毕以峰; 毛玉欣
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-07-17
Filing date: 2010-06-13
Publication date: 2011-01-20
Also published as: CN101959313A; CN101959313B

Abstract

A method for policy and charging control includes: when a terminal accesses a Code Division Multiple Access (CDMA) system in mobile Internet Protocol (IP) mode, the anchor gateway and the Packet Data Serving Node (PDSN) both establish IP-Connectivity Access Network (IP-CAN) sessions with the Policy and Charging Rules Function (PCRF) entity; the PCRF entity relates the two IP-CAN sessions established with each other; and the PCRF entity distributes the charging policies to the charging network element which is either the PDSN or the anchor gateway. A policy and charging control system and a PCRF entity are also provided in the present invention. In the present invention, the existing policy and charging control (PCC) solution is improved and used in CDMA2000 systems, and the changes to the existing CDMA2000 system architecture are small and easy to implement.

Description

一种策略与计费控制***、方法及一种 PCRF实体 Strategy and charging control system, method and PCRF entity

技术领域本发明涉及通信领域，具体涉及一种码分多址（Code Division Multiple Access, CDMA ) ***中实现策略与计费控制***、方法及一种 PCRF实体。 TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a policy and charging control system, a method, and a PCRF entity in a Code Division Multiple Access (CDMA) system.

背景技术 Background technique

第三代合作伙伴计划 2 ( 3rd Generation Partnership Project2, 3GPP2 ) 定义的 CDMA2000 lx和高速率分组数据 ( High Rate Packet Data, HRPD ) 网络架构，主要由移动终端 /接入终端设备（Mobile Station/Access Terminal, MS/AT ) 、无线接入网络（Radio Access Network, RAN ) 、分组数据服务节点 ( Packet Data Serving Node, PDSN )、家乡代理 /本地移动锚点（ Home Agent/ Local Mobility Anchor , HA/LMA ) 、认证授权计费（ Authentication, Authorization, Accounting, AAA )服务器以及其他核心网络设备和支撑节点组成。如图 1所示，给出了 lx和 HRPD分组数据业务（ Packet Data Service, PDS )部分网络参考模型： CDMA2000 lx and High Rate Packet Data (HRPD) network architecture defined by 3rd Generation Partnership Project 2 (3GPP2), mainly by mobile terminal/access terminal equipment (Mobile Station/Access Terminal) , MS/AT), Radio Access Network (RAN), Packet Data Serving Node (PDSN), Home Agent/Local Mobility Anchor (HA/LMA) , Authentication, Authorization, Accounting, AAA server and other core network devices and supporting nodes. As shown in Figure 1, a partial network reference model for lx and HRPD Packet Data Service (PDS) is given:

MS/AT与 RAN通过无线接口实现连接。 PDSN通过为用户终端设备提供到外部 Internet或核心网其他网元（ HA/LMA )的接入。 PDSN的作用是建立和维护 MS/AT和 PDSN之间的点到点协议（ Point to Point Protocol, PPP ) 会话；接受并执行 AAA服务器对 MS/AT的认证、授权和计费；路由来自和发往分组数据网络或者核心网其他网元（ HA/LMA ) 的数据包等。归属 /家乡代理 /本地移动错点（ Home Agent/Local mobile anchor, HA、 LMA ) 负责代理移动 IP/移动 IP (Proxy Mobile IP/Mobile IP, PMIP/MIP)场景下，为终端分配家乡地址、转发数据包、数据包的隧道封装以及计费等。 AAA (又称为远程用户拨号认证***（ Remote Authentication Dial In UserThe MS/AT and RAN are connected through a wireless interface. The PDSN provides access to the external Internet or other network elements (HA/LMA) of the core network by providing the user terminal equipment. The role of the PDSN is to establish and maintain a Point-to-Point Protocol (PPP) session between the MS/AT and the PDSN; accept and perform authentication, authorization, and accounting of the MS/AT by the AAA server; Packets to the packet data network or other network elements of the core network (HA/LMA). Home Agent/Local mobile anchor (HA, LMA) Responsible for the mobile IP/Mobile IP (PMX/MIP) scenario, assigning the home address and forwarding to the terminal. Packets, tunnel encapsulation of packets, and billing. AAA (also known as Remote Authentication Dial In User)

Service, RADIUS ) )服务器是认证授权计费服务器，其主要作用是管理哪些用户可以访问网络，具有访问权的用户可以得到哪些服务，如何对正在使用网络资源的用户进行计费。其余网络节点与本发明关系不大，在这里不作——介绍。第三代合作伙伴计划（ 3rd Generation Partnership Project, 3 GPP )定义了针对演进的分组***（ Evolved Packet System, EPS ) 网絡的策略与计费控制 ( Policy and Charging Control, PCC )架构，如图 2所示。其中策略和计费规则功能（Policy and Charging Rules Function, PCRF ) 实体负责用于业务数据流使用的网络 QoS (服务质量）以及用于计费的 PCC规则的制定，并通过 Gx 接口将 PCC 规则下发给策略和计费执行功能（Policy and Charging Enforcement Function, PCEF )实体； PCEF实体安装并执行 PCC规则，执行相关事件上以及与计费***交互计费信息。 PCRF 实体还通过 Gxx (包括 Gxa, Gxb和 Gxc )接口将用于对业务数据流进行 QoS控制的 QoS规则下发给承载绑定和事件上报（ Bearer Binding and Event Report Function, BBERF ) 实体， BBERF实体负责承载绑定和相关承载事件上报。其他的一些网元，如应用功能（ Application Function, AF )实体通过 Rx接口向 PCRF提供业务信息。 Service, RADIUS) The server is an authentication and authorization accounting server. Its main function is to manage which users can access the network, which services can be obtained by users with access rights, and how to charge users who are using network resources. The remaining network nodes have little to do with the present invention and are not described here. The 3rd Generation Partnership Project (3GPP) defines the Policy and Charging Control (PCC) architecture for the Evolved Packet System (EPS) network, as shown in Figure 2. Show. The Policy and Charging Rules Function (PCRF) entity is responsible for the network QoS (Quality of Service) used for the service data flow and the PCC rules for charging, and the PCC rules are passed through the Gx interface. The Policy and Charging Enforcement Function (PCEF) entity is sent to the PCEF entity; the PCEF entity installs and executes the PCC rules, performs related events, and exchanges billing information with the billing system. The PCRF entity also delivers the QoS rules for QoS control of the service data flow to the Bearer Binding and Event Report Function (BBERF) entity, BBERF entity through the Gxx (including Gxa, Gxb, and Gxc) interfaces. Responsible for bearer binding and related bearer event reporting. Some other network elements, such as an Application Function (AF) entity, provide service information to the PCRF through the Rx interface.

3GPP2组织立项研究 CDMA2000系列（包括 lx和 HRPD网络）***实现动态策略与计费控制的课题，并希望参考 3GPP定义的 PCC架构。因为用户终端在接入 CDMA2000***（包括 lx和 HRPD网络）时，存在多种接入方式，有代理移动 IP版本 4/版本 6 ( Proxy Mobile IP Version4/Version6 , PMIPv4/v6 )，客户端移动 IP版本 4/版本 6( Client Mobile IP Version4/Version6 , CMIPv4/v6 )，筒单 IP版本 4/版本 6( Simple IP Version4/Version6 , SIPv4/v6 ) , 而且即使是同一种移动 IP接入方式，终端、 PDSN和 HA/本地移动锚点（ Local Mobility. Anchor, LMA )建立隧道的方式不同，也会影响到动态资源控制与计费方式的机制。 3GPP2 Organizational Project Research The CDMA2000 series (including lx and HRPD networks) systems implement the topic of dynamic policy and charging control, and hope to refer to the PCC architecture defined by 3GPP. Because the user terminal accesses the CDMA2000 system (including lx and HRPD networks), there are multiple access methods, there are proxy mobile IP version 4/version 6 (Proxy Mobile IP Version4/Version6, PMIPv4/v6), client mobile IP Version 4/Version 6 (Client Mobile IP Version 4/Version6, CMIPv4/v6), single IP version 4/version 6 (Simplified IP Version 4/Version6, SIPv4/v6), and even the same mobile IP access mode, the terminal The PDSN and the Local Mobility. Anchor (LMA) establish tunnels differently, which also affects the mechanism of dynamic resource control and charging.

发明内容本发明要解决的技术问题是提供一种策略与计费控制***、方法及一种 PCRF实体，可在 CDMA2000***各种接入场景下均能实现动态策略与计费控制。为了解决上述问题，本发明提供了一种策略与计费控制方法，包括：当终端通过移动 IP的方式接入 CDMA***时，锚点网关与分组数据服务节点（ PDSN )均与策略和计费规则功能（ PCRF )实体建立 IP连接接入网 ( IP-CAN )会话，且所述 PCRF实体将建立的两个 IP-CAN会话关联；以及所述 PCRF实体向计费网元下发计费策略，所述计费网元为所述 PDSN 或锚点网关。锚点网关与 PDSN均与 PCRF建立 IP-CAN会话的步骤包括：所述 PDSN 收到移动 IP注册请求、或者 IP控制协议协商请求、或者 IPv6控制协议协商请求后，向所述 PCRF实体发送第二 IP-CA 会话建立指示，其中携带用户标识，或携带用户标识及分组数据网的标识，或携带用户标识、分组数据网的标识及用户终端的 IP地址， PCRF实体收到所述第二 IP-CAN会话建立指示后建立第二 IP-CAN会话；以及，所述锚点网关收到移动 IP注册请求、或者代理移动 IP注册请求、或者绑定更新、或者代理绑定更新后，向所述 PCRF 实体发起第一 IP-CAN会话建立指示，其中携带用户标识、分组数据网的标识及终端的 IP地址， PCRF实体收到所述第一 IP-CAN会话建立指示后建立第一 IP-CAN会话； SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide a policy and charging control system, method, and a PCRF entity, which can implement dynamic policy and charging control in various access scenarios of a CDMA2000 system. In order to solve the above problem, the present invention provides a policy and charging control method, including: when a terminal accesses a CDMA system by means of mobile IP, both an anchor gateway and a packet data serving node (PDSN) are associated with policy and charging. A rule function (PCRF) entity establishes an IP connection access network (IP-CAN) session, and the PCRF entity associates two established IP-CAN sessions; and the PCRF entity delivers a charging policy to the charging network element The charging network element is the PDSN or an anchor gateway. The step of establishing an IP-CAN session with the PCRF by the anchor gateway and the PDSN includes: after receiving the mobile IP registration request, or the IP control protocol negotiation request, or the IPv6 control protocol negotiation request, the PDSN sends the second to the PCRF entity. The IP-CA session establishment indication, which carries the user identifier, or carries the user identifier and the identifier of the packet data network, or carries the user identifier, the identifier of the packet data network, and the IP address of the user terminal, and the PCRF entity receives the second IP- Establishing a second IP-CAN session after the CAN session establishment indication; and, after the anchor gateway receives the mobile IP registration request, or the proxy mobile IP registration request, or the binding update, or the proxy binding update, to the PCRF The entity initiates a first IP-CAN session establishment indication, where the user identifier, the identifier of the packet data network, and the IP address of the terminal are carried, and the PCRF entity establishes the first IP-CAN session after receiving the first IP-CAN session establishment indication;

PCRF 实体将建立的两个 IP-CAN会话关联的步骤包括：若所述第二 IP-CAN会话建立指示仅携带用户标识，所述 PCRF 实体将携带了相同的用户标识的第一 IP-CAN会话与第二 IP-CAN会话关联，若所述第二 IP-CAN 会话建立指示携带了用户标识及分组数据网标识，所述 PCRF实体将携带了相同的用户标识及分组数据网标识的第一 IP-CAN会话与第二 IP-CAN会话关联，若所述第二 IP-CAN会话建立指示携带了用户标识、分组数据网标识及终端 IP地址，所述 PCRF实体将携带了相同用户标识、分组数据网标识及终端 IP地址的第一 IP-CAN会话与第二 IP-CAN会话关联。当 PDSN 和锚点网关之间支持反向隧道时，所述终端的接入方式为The step of associating the two IP-CAN sessions established by the PCRF entity includes: if the second IP-CAN session establishment indication carries only the user identity, the PCRF entity will carry the first IP-CAN session with the same user identity In association with the second IP-CAN session, if the second IP-CAN session establishment indication carries the user identifier and the packet data network identifier, the PCRF entity will carry the same user identifier and the first IP of the packet data network identifier. The -CAN session is associated with the second IP-CAN session. If the second IP-CAN session establishment indication carries the user identifier, the packet data network identifier, and the terminal IP address, the PCRF entity carries the same user identifier and packet data. The first IP-CAN session of the network identity and the terminal IP address is associated with the second IP-CAN session. When the reverse tunnel is supported between the PDSN and the anchor gateway, the access mode of the terminal is

CMIPv4-支持反向隧道、或者 PMIPv4、或者 CMIPv6或者 PMIPv6; 当 PDSN 和锚点网关之间不支持反向隧道时 , 所述终端的接入方式为 CMIPv4-不支持反向隧道；所述第二 IP-CAN会话建立指示或第一 IP-CAN会话建立指示还携带所述终端的接入方式；所述 PCRF实体收到第二 IP-CAN会话建立指示或第一 IP-CAN会话建立指示后，所述方法还包括：当终端的接入方式为 CMIPv4-支持反向隧道、或者 PMIPv4、或者 CMIPv6或者 PMIPv6时，判定此时计费网元为所述锚点网关， PCRF 实体在执行将建立的两个 IP-CAN会话关联的步骤之后，将计费策略下发至锚点网关；当终端的接入方式为 CMIPv4-不支持反向隧道时，判定此时计费网元为 PDSN, 所述 PCRF 实体在执行将建立的两个 IP-CAN 会话关联的步骤之后，将计费策略下发至 PDSN。 PCRF 实体将建立的两个 IP-CAN会话关联的步骤之后，所述方法还包括：所述 PCRF实体向锚点网关下发数据路由分发策略与事件上报策略，向所述 PDSN下发更新后的服务质量策略与事件上报策略；以及所述锚点网关进行分组数据路由分发与事件上报；所述 PDSN进行承载绑定与事件上报。所述锚点网关为家乡代理或本地移动锚点网关；所述移动 IP包括代理移动 IP版本 4、代理移动 IP版本 6、客户端移动 IP版本 4以及客户端移动 IP版本 6。本发明还提供一种策略与计费控制方法，包括： CMIPv4-supports reverse tunneling, or PMIPv4, or CMIPv6 or PMIPv6; when the reverse tunnel is not supported between the PDSN and the anchor gateway, the access mode of the terminal is CMIPv4-the reverse tunnel is not supported; The second IP-CAN session establishment indication or the first IP-CAN session establishment indication further carries an access mode of the terminal; the PCRF entity receives a second IP-CAN session establishment indication or a first IP-CAN session After the indication is established, the method further includes: when the access mode of the terminal is CMIPv4-supporting reverse tunnel, or PMIPv4, or CMIPv6 or PMIPv6, determining that the charging network element is the anchor gateway at this time, and the PCRF entity is After performing the step of associating the two IP-CAN sessions to be established, the charging policy is delivered to the anchor gateway; when the access mode of the terminal is CMIPv4 - the reverse tunnel is not supported, it is determined that the charging network element is The PDSN, the PCRF entity delivers the charging policy to the PDSN after performing the step of associating the two IP-CAN sessions to be established. After the step of associating the two IP-CAN sessions to be established by the PCRF entity, the method further includes: sending, by the PCRF entity, a data routing distribution policy and an event reporting policy to the anchor gateway, and delivering the updated information to the PDSN. a service quality policy and an event reporting policy; and the anchor gateway performs packet data routing distribution and event reporting; the PDSN performs bearer binding and event reporting. The anchor gateway is a home agent or a local mobility anchor gateway; the mobile IP includes a proxy mobile IP version 4, a proxy mobile IP version 6, a client mobile IP version 4, and a client mobile IP version 6. The invention also provides a policy and charging control method, including:

当终端通过简单 IP 的方式接入 CDMA ***时，分组数据服务节点 When the terminal accesses the CDMA system through a simple IP, the packet data service node

( PDSN ) 向策略和计费规则（ PCRF )发送 IP-CAN会话建立指示，以请求建立 IP连接接入网（ IP-CAN )会话；以及所述 PCRF实体收到所述 IP-CAN会话建立指示后建立 IP-CAN会话，并向所述 PDSN下发计费策略。建立 IP-CAN会话的步骤之后，所述方法还包括：所述 PCRF实体向所述 PDSN下发数据路由分发策略、服务质量策略及事件上报策略。本发明还提供一种策略与计费控制***，包括分组数据服务节点(PDSN) transmitting an IP-CAN session establishment indication to a Policy and Charging Rules (PCRF) to request establishment of an IP Connection Access Network (IP-CAN) session; and the PCRF entity receiving the IP-CAN session establishment indication Then, an IP-CAN session is established, and a charging policy is sent to the PDSN. After the step of establishing an IP-CAN session, the method further includes: sending, by the PCRF entity, a data route distribution policy, a quality of service policy, and an event reporting policy to the PDSN. The invention also provides a policy and charging control system, including a packet data service node

( PDSN ) 、锚点网关以及策略和计费规则功能（PCRF ) 实体；所述 PDSN设置为：当终端通过移动 IP的方式接入码分多址（ CDMA ) ***时，向所述 PCRF实体发起 IP连接接入网（IP-CAN )会话建立指示；所述锚点网关设置为：当终端通过移动 IP的方式接入 CDMA***时，向所述 PCRF实体发起 IP-CAN会话建立指示；所述 PCRF实体设置为：收到所述 IP-CAN会话建立指示后建立 IP-CAN 会话，将建立的两个 IP-CAN会话关联，以及将所述两个 IP-CA 会话关联后向计费网元下发计费策略，其中，所述 PDSN或锚点网关为计费网元。所述 PDSN是设置为按如下方式向所述 PCRF实体发起 IP-CAN会话建立指示： PDSN收到移动 IP注册请求、或者 IP控制协议协商请求或者 IPv6 控制协议协商请求后，向所述 PCRF实体发送第二 IP-CAN会话建立指示，其中携带用户标识，或携带用户标识及分组数据网的标识，或携带用户标识、分组数据网的标识及用户终端的 IP地址；所述锚点网关是设置为按如下方式向所述 PCRF实体发起 IP-CAN会话建立指示：锚点网关收到移动 IP注册请求、或者代理移动 IP注册请求、或者绑定更新或者代理绑定更新后 , 向所述 PCRF实体发送第一 IP-CAN会话建立指示，其中携带用户标识、分组数据网的标识及终端的 IP地址；所述 PCRF是设置为按如下方式建立 IP-CAN会话：所述 PCRF实体收到第一 IP-CAN 会话建立指示后建立第一 IP-CAN 会话，以及收到第二 IP-CAN会话建立指示后建立第二 IP-CAN会话；所述 PCRF实体是设置为按如下方式将建立的两个 IP-CAN会话关联：若所述第二 IP-CAN会话建立指示仅携带用户标识，所述 PCRF实体将携带了相同的用户标识的第一 IP-CAN会话与第二 IP-CAN会话关联，若所述第二 IP-CAN会话建立指示携带了用户标识及分组数据网标识，所述 PCRF实体将携带了相同的用户标识及分组数据网标识的第一 IP-CAN会话与第二 IP-CA 会话关联，若所述第二 IP-CAN会话建立指示携带了用户标识、分组数据网标识及终端 IP地址，所述 PCRF实体将携带了相同用户标识、分组数据网标识及终端 IP地址的第一 IP-CAN会话与第二 IP-CAN会话关联。当 PDSN 和锚点网关之间支持反向隧道时，所述终端的接入方式为 CMIPv4-支持反向隧道、或者 PMIPv4、或者 CMIPv6或者 PMIPv6; 当 PDSN 和锚点网关之间不支持反向隧道时，所述终端的接入方式为 CMIPv4-不支持反向隧道；所述第二 IP-CAN会话建立指示或第一 IP-CAN会话建立指示还携带所述终端的接入方式；所述 PCRF实体还设置为：根据所述终端的接入方式判定计费网元为锚点网关还是 PDSN, 当接入方式为 CMHV4-支持反向隧道、或者 PMIPv4、或者 CMIPv6或者 PMIPv6时，所述计费网元为锚点网关， PCRF实体向锚点网关下发计费策略，当接入方式为 CMEV4-不支持反向隧道时，所述计费网元为 PDSN, PCRF实体向 PDSN下发计费策略。所述 PCRF实体还设置为：向锚点网关下发数据路由分发策略与事件上报策略，向所述 PDSN下发更新后的服务质量策略与事件上报策略；所述锚点网关还设置为：分组数据路由分发与事件上报；以及所述 PDSN还设置为：承载绑定与事件上报。本发明还提供一种策略与计费控制***，包括分组数据服务节点 ( PDSN )及策略和计费规则功能（ PCRF ) 实体；所述 PDSN设置为：当终端通过简单 IP的方式接入 CDMA***时，向所述 PCRF实体发送建立 IP连接接入网（ IP-CAN )会话指示；所述 PCRF实体设置为：收到所述建立 IP连接接入网（IP-CAN )会话指示后，建立 IP-CAN会话，并向所述 PDSN下发计费策略。本发明还提供一种计费规则决策（PCRF )实体，其包括：会话建立模块和下发模块，其中： (PDSN), an anchor gateway, and a Policy and Charging Rules Function (PCRF) entity; the PDSN is set to: when the terminal accesses a Code Division Multiple Access (CDMA) system by means of mobile IP, initiates to the PCRF entity An IP-Connected Access Network (IP-CAN) session establishment indication; the anchor gateway is configured to: initiate an IP-CAN session establishment indication to the PCRF entity when the terminal accesses the CDMA system by means of mobile IP; The PCRF entity is configured to: establish an IP-CAN session after receiving the IP-CAN session establishment indication, associate the established two IP-CAN sessions, and associate the two IP-CA sessions with the backward charging network element The charging policy is delivered, where the PDSN or the anchor gateway is a charging network element. The PDSN is configured to initiate an IP-CAN session establishment indication to the PCRF entity in the following manner: after receiving the mobile IP registration request, or the IP control protocol negotiation request or the IPv6 control protocol negotiation request, the PDSN sends the PCRF entity to the PCRF entity. a second IP-CAN session establishment indication, where the user identifier is carried, or carries the user identifier and the identifier of the packet data network, or carries the user identifier, the identifier of the packet data network, and the IP address of the user terminal; the anchor gateway is set to Initiating an IP-CAN session establishment indication to the PCRF entity as follows: After receiving the mobile IP registration request, or the proxy mobile IP registration request, or the binding update or the proxy binding update, the anchor gateway sends the PCRF entity to the PCRF entity. a first IP-CAN session establishment indication, where the user identifier, the identifier of the packet data network, and the IP address of the terminal are carried; the PCRF is configured to establish an IP-CAN session as follows: the PCRF entity receives the first IP- Establishing a first IP-CAN session after the CAN session establishment indication, and establishing a second IP-CAN session after receiving the second IP-CAN session establishment indication; the PCRF The body is set to associate two IP-CAN sessions to be established as follows: If the second IP-CAN session establishment indication carries only the user identity, the PCRF entity will carry the first IP of the same user identity. The CAN session is associated with the second IP-CAN session. If the second IP-CAN session establishment indication carries the user identifier and the packet data network identifier, the PCRF entity carries the same user identifier and the packet data network identifier. An IP-CAN session is associated with the second IP-CA session. If the second IP-CAN session establishment indication carries the user identifier, the packet data network identifier, and the terminal IP address, the PCRF entity carries the same user identifier. Number of groups The first IP-CAN session according to the network identity and the terminal IP address is associated with the second IP-CAN session. When the reverse tunnel is supported between the PDSN and the anchor gateway, the access mode of the terminal is CMIPv4-support reverse tunnel, or PMIPv4, or CMIPv6 or PMIPv6; when the reverse tunnel is not supported between the PDSN and the anchor gateway The access mode of the terminal is CMIPv4 - the reverse tunnel is not supported; the second IP-CAN session establishment indication or the first IP-CAN session establishment indication further carries the access mode of the terminal; The entity is further configured to: determine, according to the access mode of the terminal, whether the charging network element is an anchor gateway or a PDSN, and when the access mode is CMHV4-supporting reverse tunnel, or PMIPv4, or CMIPv6 or PMIPv6, the charging The network element is an anchor gateway, and the PCRF entity sends a charging policy to the anchor gateway. When the access mode is CMEV4 and the reverse tunnel is not supported, the charging network element is a PDSN, and the PCRF entity sends a charging to the PDSN. Strategy. The PCRF entity is further configured to: deliver a data routing distribution policy and an event reporting policy to the anchor gateway, and send an updated QoS policy and an event reporting policy to the PDSN; the anchor gateway is further configured as: Data routing distribution and event reporting; and the PDSN is further configured to: bearer binding and event reporting. The invention also provides a policy and charging control system, comprising a packet data serving node (PDSN) and a policy and charging rule function (PCRF) entity; the PDSN is set as: when the terminal accesses the CDMA system by means of simple IP And sending an establishment IP connection access network (IP-CAN) session indication to the PCRF entity; the PCRF entity is configured to: establish an IP after receiving the establishment of the IP connection access network (IP-CAN) session indication - A CAN session, and the charging policy is delivered to the PDSN. The invention also provides a charging rule decision (PCRF) entity, which includes: a session establishing module and a sending module, wherein:

所述会话建立模块设置为：当终端通过移动 IP的方式接入码分多址（CDMA )***时，接收分组数据服务节点（PDSN ) 向所述 PCRF实体发起的第二 IP连接接入网 ( IP-CAN )会话建立指示，并建立第二 IP-CAN会话，以及接收锚点网关向所述 PCRF实体发起的第一 IP-CAN会话建立指示，并建立第一会话，将建立的两个 IP-CAN会话关联；或者，当终端通过简单 IP的方式接入 CDMA***时，接收所述 PDSN向所述 PCRF实体请求建立 IP连接接入网（ IP-CAN )会话；所述下发模块设置为：向计费网元下发计费策略，其中，当终端通过移动 IP的方式接入码分多址（ CDMA )***时，所述 PD SN或锚点网关为计费网元，或者，当终端通过简单 IP的方式接入 CDMA***时，所述计费网关为所述 PDSN。所述第二 IP-CAN会话建立指示携带用户标识，或携带用户标识及分组数据网的标识，或携带用户标识、分组数据网的标识及用户终端的 IP地址；所述第一 IP-CAN会话建立指示携带用户标识、分组数据网的标识及终端的 IP地址；所述会话建立模块是设置为按如下方式将建立的两个 IP-CAN会话关联：若所述第二 IP-CAN会话建立指示仅携带用户标识，所述会话建立模块将携带了相同的用户标识的第一 IP-CAN会话与第二 IP-CAN会话关联，若所述第二 IP-CAN会话建立指示携带了用户标识及分组数据网标识，所述会话建立模块将携带了相同的用户标识及分组数据网标识的第一 IP-CAN会话与第二 IP-CAN会话关联，若所述第二 IP-CAN会话建立指示携带了用户标识、分组数据网标识及终端 IP地址，所述会话建立模块将携带了相同用户标识、分组数据网标识及终端 IP地址的第一 IP-CAN会话与第二 IP-CAN会话关联。当 PDSN 和锚点网关之间支持反向隧道时，所述终端的接入方式为 CMIPv4-支持反向隧道、或者 PMIPv4、或者 CMIPv6或者 PMIPv6, 当 PDSN 和锚点网关之间不支持反向隧道时，所述终端的接入方式为 CMIPv4-不支持反向隧道；所述第二 IP-CAN会话建立指示或第一 IP-CAN会话建立指示还携带所述终端的接入方式；所述下发模块还设置为：根据所述终端的接入方式判定计费网元为锚点网关还是 PDSN, 当接入方式为 CMIPv4-支持反向隧道、或者 PMIPv4、或者 CMIPv6或者 PMIPv6时，所述计费网元为锚点网关， PCRF实体向锚点网关下发计费策略，当接入方式为 CMIPv4-不支持反向隧道时，所述计费网元为 PDSN, PCRF实体向 PDSN下发计费策略。 The session establishing module is configured to: receive a packet when the terminal accesses a code division multiple access (CDMA) system by using a mobile IP manner. a second IP connection access network (IP-CAN) session establishment indication initiated by the group data serving node (PDSN) to the PCRF entity, and establishing a second IP-CAN session, and the receiving anchor gateway initiating the PCRF entity The first IP-CAN session establishment indication, and establishing a first session, associating the two established IP-CAN sessions; or, when the terminal accesses the CDMA system by means of a simple IP, receiving the PDSN to the PCRF The entity requests to establish an IP-connected access network (IP-CAN) session; the sending module is configured to: send a charging policy to the charging network element, where the terminal accesses the code division multiple access by means of mobile IP ( In the CDMA system, the PD SN or the anchor gateway is a charging network element, or when the terminal accesses the CDMA system by means of a simple IP, the charging gateway is the PDSN. The second IP-CAN session establishment indication carries the user identifier, or carries the user identifier and the identifier of the packet data network, or carries the user identifier, the identifier of the packet data network, and the IP address of the user terminal; the first IP-CAN session Establishing an indication carrying a user identifier, an identifier of the packet data network, and an IP address of the terminal; the session establishing module is configured to associate two IP-CAN sessions to be established as follows: if the second IP-CAN session establishment indication Carrying only the user identifier, the session establishing module associates the first IP-CAN session carrying the same user identifier with the second IP-CAN session, if the second IP-CAN session establishment indication carries the user identifier and the grouping a data network identifier, the session establishing module associates a first IP-CAN session carrying the same user identifier and a packet data network identifier with a second IP-CAN session, if the second IP-CAN session establishment indication is carried User ID, packet data network identifier, and terminal IP address, the session establishment module will carry the first IP-CAN meeting with the same user identifier, packet data network identifier, and terminal IP address. Associated with the second IP-CAN session. When the reverse tunnel is supported between the PDSN and the anchor gateway, the access mode of the terminal is CMIPv4-support reverse tunnel, or PMIPv4, or CMIPv6 or PMIPv6, when reverse tunnel is not supported between the PDSN and the anchor gateway The access mode of the terminal is CMIPv4 - the reverse tunnel is not supported; the second IP-CAN session establishment indication or the first IP-CAN session establishment indication also carries the The sending mode of the terminal is further configured to: determine, according to the access mode of the terminal, whether the charging network element is an anchor gateway or a PDSN, and when the access mode is CMIPv4-supporting a reverse tunnel, or PMIPv4 In the case of CMIPv6 or PMIPv6, the charging network element is an anchor gateway, and the PCRF entity sends an accounting policy to the anchor gateway. When the access mode is CMIPv4-the reverse tunnel is not supported, the charging network element For the PDSN, the PCRF entity delivers a charging policy to the PDSN.

综上所述，本发明提供一种策略与计费控制***及方法，能够在 CDMA2000***增强并使用现有的 PCC方案，且对现有 CDMA2000***的架构改动很小，简单易行。 In summary, the present invention provides a policy and charging control system and method, which can enhance and use an existing PCC solution in a CDMA2000 system, and has little change to the existing CDMA2000 system architecture, and is simple and easy.

附图概述图 1 是现有技术的 CDMA2000分组数据业务网络参考模型；图 2a与图 2b 是现有技术的 3GPP PCC的两种架构示意图；图 3 是本发明的支持反向隧道的架构图一；图 4 是本发明的不支持反向隧道的架构图二；图 5 是本发明的 SIP的架构图三；图 6 是本发明的实施例一终端基于 CMIPv4接入（支持反向隧道）的流程图； BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a prior art CDMA2000 packet data service network reference model; FIG. 2a and FIG. 2b are two architecture diagrams of a prior art 3GPP PCC; FIG. 3 is a schematic diagram of a reverse tunnel supported architecture of the present invention. FIG. 4 is a schematic diagram of the architecture of the present invention that does not support reverse tunneling; FIG. 5 is a third structural diagram of the SIP of the present invention; FIG. 6 is a schematic diagram of the terminal according to the present invention based on CMIPv4 access (supporting reverse tunneling) Flow chart

图 7 是本发明的实施例二终端基于 CMIPv4接入（不支持反向隧道 )的流程图；图 8 是本发明的实施例三终端基于 PMIPv4接入的流程图；图 9 是本发明的实施例四终端基于 CMIPv6接入的流程图；图 10 是本发明的实施例五终端基于 PMIPv6接入的流程图；图 11 是本发明的实施例六终端基于 SIPv4接入的流程图；图 12 是本发明的实施例七终端基于 SIPv6接入的流程图。 7 is a flowchart of a second embodiment of the present invention based on CMIPv4 access (without supporting reverse tunneling); FIG. 8 is a flowchart of a third embodiment of the present invention based on PMIPv4 access; FIG. 9 is an implementation of the present invention; 4 is a flowchart of a CMIPv6 access based on a terminal; FIG. 10 is a flowchart of a terminal based on PMIPv6 access according to Embodiment 5 of the present invention; FIG. 11 is a flowchart of a terminal based on SIPv4 access according to Embodiment 6 of the present invention; FIG. 12 is a flowchart of a seventh embodiment of the present invention based on SIPv6 access.

本发明的较佳实施方式 Preferred embodiment of the invention

CDMA2000***在釆用 PCC架构时，需要对 3GPP现有的 PCC架构做增强和修改，包括 PCEF实体在哪个网元实现、 BBERF实体的功能是否要扩展、需要设置几个 PCEF实体网元、不同的网元会话如何区分、不同的网元的功能如何定位等都是需要明确并解决的。本发明中的移动 IP包括代理移动 IP版本 4 ( PMIPv4 )、代理移动 IP版本 6 ( ΡΜΙΡνό ) 、客户端移动 IP版本 4 ( CMIPv4 ) 以及客户端移动 IP版本 6 ( CMIPv6 ) ; 以下 IP连接接入网（ IP-Connectivity Access Network， IP-CAN ) 会话 -1还可以称为第一 IP-CAN会话， IP-CAN会话 -2还可以称为第二 IP-CAN 会话； When using the PCC architecture, the CDMA2000 system needs to enhance and modify the existing PCC architecture of the 3GPP, including which network element the PCEF entity implements, whether the function of the BBERF entity needs to be extended, and several PCEF physical network elements need to be set, different How to distinguish between NE sessions and how to locate different NEs needs to be clarified and resolved. The mobile IP in the present invention includes Proxy Mobile IP Version 4 (PMIPv4), Proxy Mobile IP Version 6 (ΡΜΙΡνό), Client Mobile IP Version 4 (CMIPv4), and Client Mobile IP Version 6 (CMIPv6); the following IP connection access IP-Connectivity Access Network (IP-CAN) Session-1 may also be referred to as a first IP-CAN session, and IP-CAN Session-2 may also be referred to as a second IP-CAN session;

本发明提供一种 CDMA***中的策略与计费控制***，包括 PDSN、锚点网关（HA/LMA )及 PCRF实体； ( a ) MS/AT通过 MIP的方式接入 CDMA2000***： The present invention provides a policy and charging control system in a CDMA system, including a PDSN, an anchor gateway (HA/LMA), and a PCRF entity; (a) the MS/AT accesses the CDMA2000 system through MIP:

PDSN设置为：当 MS/AT通过 MIP的方式接入 CDMA2000***时，向 PCRF实体发起 IP-CAN会话建立指示；具体地， PDSN是设置为按如下方式向 PCRF实体发起 IP-CAN会话建立指示：收到 MSZAT发来的移动 IP注册请求、或者 IP控制协议协商请求或者 IPv6控制协议协商请求后，向 PCRF实体发起 IP-CAN会话 -2建立指示；其中， IP-CAN会话 -2建立指示携带用户标识，或携带用户标识及分组数据网的标识，或携带用户标识、分组数据网的标识、用户终端的 IP地址及 MS/AT的接入方式； The PDSN is configured to: when the MS/AT accesses the CDMA2000 system by means of MIP, initiate an IP-CAN session establishment indication to the PCRF entity; specifically, the PDSN is configured to initiate an IP-CAN session establishment indication to the PCRF entity as follows: After receiving the mobile IP registration request, or the IP control protocol negotiation request or the IPv6 control protocol negotiation request sent by the MSZAT, the IP-CAN session-2 establishment indication is initiated to the PCRF entity; wherein the IP-CAN session-2 establishment indication carries the user Identifying, or carrying the user identifier and the identifier of the packet data network, or carrying the user identifier, the identifier of the packet data network, the IP address of the user terminal, and the access mode of the MS/AT;

PDSN还设置为：执行承载绑定及事件上报等功能。 The PDSN is also configured to perform functions such as bearer binding and event reporting.

HA/LMA设置为：当 MS/AT通过 MIP的方式接入 CDMA2000***时，向 PCRF实体发起 IP-CAN会话 -1建立指示；具体地， HA/LMA收到移动 IP注册请求、或者代理移动 IP注册请求、其中， IP-CAN会话 - 1 建立指示携带用户标识、分组数据网的标识及终端 IP地址等信息，还可以携带 MS/AT的接入方式； The HA/LMA is set to: when the MS/AT accesses the CDMA2000 system by means of MIP, initiates an IP-CAN session-1 establishment indication to the PCRF entity; specifically, the HA/LMA receives the mobile IP registration request, or the proxy mobile IP Registration request, The IP-CAN session-1 establishes an indication of carrying the user identifier, the identifier of the packet data network, and the IP address of the terminal, and may also carry the access mode of the MS/AT;

HA/LMA还设置为：分发分组数据等功能； PDSN或 HA/LMA作为计费网元；当 HA/LMA 与 PDSN 之间支持反向隧道时， MS/AT 的接入方式为 CMIPv4-支持反向隧道、 PMIPv4、 CMIPv6或 PMIPv6; 当 HA/LMA与 PDSN 之间不支持反向隧道时， MS/AT的接入方式为 CMIPv4-不支持反向隧道； The HA/LMA is also configured to: distribute packet data and other functions; PDSN or HA/LMA as the charging network element; when the reverse tunnel is supported between the HA/LMA and the PDSN, the MS/AT access mode is CMIPv4-supported. To the tunnel, PMIPv4, CMIPv6, or PMIPv6; when the reverse tunnel is not supported between the HA/LMA and the PDSN, the MS/AT access mode is CMIPv4-the reverse tunnel is not supported;

PCRF实体设置为：收到 IP-CAN会话建立指示后建立 IP-CAN会话；具体地， PCRF实体是设置为按如下方式建立 IP-CAN会话：收到 IP-CAN 会话 -1建立指示后建立 IP-CAN会话 -1 , 以及收到 IP-CAN会话 -2建立指示后建立 IP-CAN会话 -2; The PCRF entity is set to: establish an IP-CAN session after receiving the IP-CAN session establishment indication; specifically, the PCRF entity is set to establish an IP-CAN session as follows: IP is established after receiving the IP-CAN session-1 establishment indication -CAN session-1, and establish an IP-CAN session-2 after receiving the IP-CAN session-2 setup indication;

PCRF实体还设置为：将建立的两个 IP-CAN会话关联，其中，若 IP-CAN 会话 -2建立指示仅携带用户标识， PCRF将携带了相同的用户标识的 IP-CAN 会话 -1与 IP-CAN会话 -2关联；若 IP-CAN会话 -2建立指示携带了用户标识及分组数据网标识 , PCRF 将携带了相同的用户标识及分组数据网标识的 IP-CA 会话 -1与 IP-CA 会话 -2关联；若 IP-CAN会话 -2建立指示携带了用户标识、分组数据网标识及终端 IP地址， PCRF将携带了相同用户标识、分组数据网标识及终端 IP地址的 IP-CAN会话 -1与 IP-CAN会话 -2关联。 PCRF 实体还设置为：根据 IP-CAN会话 -2建立指示或 IP-CAN会话 -1 建立指示中的 MS/AT的接入方式判定计费网元是 HA/LMA还是 PDSN; 具体地，当 MS/AT 的接入方式为 CMIPv4-支持反向隧道、 PMIPv4、 CMIPv6或 PMIPv6时，判定 HA/LMA为计费网元，当 HA/LMA与 PDSN之间不支持反向隧道时，当 MS/AT的接入方式为 CMIPv4-不支持反向隧道时，判定 PDSN为计费网元； The PCRF entity is further configured to associate the two established IP-CAN sessions, wherein if the IP-CAN Session-2 setup indication carries only the user identity, the PCRF will carry the IP-CAN Session-1 and IP of the same user identity. -CAN session-2 association; If the IP-CAN session-2 setup indication carries the user identity and the packet data network identifier, the PCRF will carry the same user identity and IP-CA session-1 and IP-CA of the packet data network identifier. Session-2 association; if the IP-CAN Session-2 setup indication carries the user identity, the packet data network identifier, and the terminal IP address, the PCRF will carry the IP-CAN session with the same user identity, packet data network identifier, and terminal IP address. 1 Associated with IP-CAN Session-2. The PCRF entity is further configured to: determine whether the charging network element is HA/LMA or PDSN according to the IP-CAN session-2 establishment indication or the access mode of the MS/AT in the IP-CAN session-1 establishment indication; specifically, when the MS When the access mode of the /AT is CMIPv4-supporting reverse tunneling, PMIPv4, CMIPv6, or PMIPv6, it is determined that the HA/LMA is a charging network element. When the reverse tunnel is not supported between the HA/LMA and the PDSN, the MS/AT is used. When the access mode is CMIPv4 and the reverse tunnel is not supported, the PDSN is determined to be a charging network element.

PCRF 实体还设置为：将两个 IP-CAN会话关联后向计费网元下发计费策略，向 PDSN下发事件上报策略及更新后的 QOS策略等，向 HA/LMA下发数据路由分发策略，还可以向 HA/LMA下发事件上报策略。 The PCRF entity is also configured to: after the two IP-CAN sessions are associated, the charging policy is delivered to the charging network element, and the event reporting policy and the updated QOS policy are sent to the PDSN, and the HA/LMA is sent to the HA/LMA. Send a data routing and distribution policy, and send an event reporting policy to the HA/LMA.

( b ) MS/AT通过 SIP的方式接入 CDMA2000***： (b) MS/AT accesses the CDMA2000 system via SIP:

PDSN设置为：当 MS/AT通过 SIP的方式（如 SIPv4或 SIPv6 )接入 CDMA2000***时，向 PCRF实体发起 IP-CAN会话建立指示，其中携带用户标识、分组数据网的标识及终端 IP地址等信息； The PDSN is set to: When the MS/AT accesses the CDMA2000 system through the SIP (such as SIPv4 or SIPv6), initiates an IP-CAN session establishment indication to the PCRF entity, where the user identifier, the identifier of the packet data network, and the terminal IP address are carried. Information

PCRF设置为：建立 IP-CAN会话后向 PDSN下发计费策略及其他策略 (如更新后的 QOS策略及事件上报策略等）。 The PCRF is set to: After the IP-CAN session is established, the charging policy and other policies (such as the updated QOS policy and event reporting policy) are sent to the PDSN.

本发明还提供一种计费规则决策（PCRF )实体，其包括：会话建立模块和下发模块，其中： The present invention also provides a charging rule decision (PCRF) entity, which includes: a session establishment module and a delivery module, where:

会话建立模块设置为：当终端通过移动 IP的方式接入码分多址（CDMA )***时，接收分组数据服务节点（PDSN ) 向 PCRF 实体发送的第二 IP 连接接入网 ( IP-CAN )会话建立指示，并建立第二 IP-CAN会话，以及接收锚点网关向 PCRF实体发送的第一 IP-CAN会话建立指示，并建立第一会话，将建立的两个 IP-CAN会话关联；或者，当终端通过筒单 IP的方式接入 CDMA***时，接收 PDSN向 PCRF 实体请求建立 IP连接接入网（ IP-CAN )会话；下发模块设置为：向计费网元下发计费策略，其中，当终端通过移动 IP 的方式接入码分多址（CDMA ) ***时， PDSN或锚点网关为计费网元，或者，当终端通过简单 IP的方式接入 CDMA***时，计费网关为 PDSN。第二 IP-CAN会话建立指示携带用户标识，或携带用户标识及分组数据网的标识 , 或携带用户标识、分组数据网的标识及用户终端的 IP地址；第一 IP-CAN会话建立指示携带用户标识、分组数据网的标识及终端的 The session establishment module is configured to: when the terminal accesses the code division multiple access (CDMA) system by means of mobile IP, receive a second IP connection access network (IP-CAN) sent by the packet data serving node (PDSN) to the PCRF entity. a session establishment indication, and establishing a second IP-CAN session, and receiving a first IP-CAN session establishment indication sent by the anchor gateway to the PCRF entity, and establishing a first session to associate the established two IP-CAN sessions; or When the terminal accesses the CDMA system through the single IP address, the receiving PDSN requests the PCRF entity to establish an IP connection access network (IP-CAN) session; the delivery module is configured to: deliver the charging policy to the charging network element. Wherein, when the terminal accesses the code division multiple access (CDMA) system by means of mobile IP, the PDSN or the anchor gateway is a charging network element, or when the terminal accesses the CDMA system by means of simple IP, charging The gateway is a PDSN. The second IP-CAN session establishment indication carries the user identifier, or carries the user identifier and the identifier of the packet data network, or carries the user identifier, the identifier of the packet data network, and the IP address of the user terminal; the first IP-CAN session establishment indication carries the user Identification, identification of the packet data network, and terminal

IP地址；会话建立模块是设置为按如下方式将建立的两个 IP-CAN会话关联：若第二 IP-CAN会话建立指示仅携带用户标识，会话建立模块将携带了相同的用户标识的第一 IP-CAN会话与第二 IP-CAN会话关联，若第二 IP-CAN会话建立指示携带了用户标识及分组数据网标识，会话建立模块将携带了相同的用户标识及分组数据网标识的第一 IP-CAN会话与第二 IP-CAN会话关联，若第二 IP-CAN会话建立指示携带了用户标识、分组数据网标识及终端 IP地址，会话建立模块将携带了相同用户标识、分组数据网标识及终端 IP地址的第一 IP-CAN会话与第二 IP-CAN会话关联。当 PDSN和锚点网关之间支持反向隧道时，终端的接入方式为 CMIPv4- 支持反向隧道、或者 PMIPv4、或者 CMIPv6或者 PMIPv6, 当 PDSN和锚点网关之间不支持反向隧道时，终端的接入方式为 CMIPv4-不支持反向隧道；第二 IP-CAN会话建立指示或第一 IP-CAN会话建立指示还携带终端的接入方式；下发模块还设置为：根据终端的接入方式判定计费网元为锚点网关还是 PDSN, 当接入方式为 CMIPv4-支持反向隧道、或者 PMIPv4、或者 CMIPv6 或者 PMIPv6 时，计费网元为锚点网关， PCRF 实体向锚点网关下发计费策略，当接入方式为 CMEV4-不支持反向隧道时，计费网元为 PDSN, PCRF 实体向 PDSN下发计费策略。 IP address; The session establishment module is configured to associate two IP-CAN sessions to be established as follows: If the second IP-CAN session establishment indication carries only the user identity, the session establishment module will carry the first IP-CAN of the same user identity. The session is associated with the second IP-CAN session. If the second IP-CAN session establishment indication carries the user identifier and the packet data network identifier, the session establishment module carries the same user identifier and the first IP-CAN of the packet data network identifier. The session is associated with the second IP-CAN session. If the second IP-CAN session establishment indication carries the user identifier, the packet data network identifier, and the terminal IP address, the session establishment module carries the same user identifier, the packet data network identifier, and the terminal IP. The first IP-CAN session of the address is associated with the second IP-CAN session. When the reverse tunnel is supported between the PDSN and the anchor gateway, the access mode of the terminal is CMIPv4-support reverse tunnel, or PMIPv4, or CMIPv6 or PMIPv6. When the reverse tunnel is not supported between the PDSN and the anchor gateway, The access mode of the terminal is CMIPv4 - the reverse tunnel is not supported; the second IP-CAN session establishment indication or the first IP-CAN session establishment indication also carries the access mode of the terminal; the delivery module is further configured to: The incoming mode determines whether the charging network element is an anchor gateway or a PDSN. When the access mode is CMIPv4-supporting reverse tunnel, or PMIPv4, or CMIPv6 or PMIPv6, the charging network element is an anchor gateway, and the PCRF entity is to the anchor gateway. The charging policy is delivered. When the access mode is CMEV4 and the reverse tunnel is not supported, the charging network element is the PDSN, and the PCRF entity sends the charging policy to the PDSN.

本发明还提供一种策略与计费控制方法，当 MS/AT通过 MIP的方式接入 CDMA2000***时， HA/LMA与 PDSN均与 PCRF建立 IP-CAN话， PCRF 将建立的两个 IP-CAN会话关联，且 HA/LMA与 PDSN之一作为计费网元；之后 PCRF向计费网元下发计费策略。以下结合附图通过多个实施例进一步说明本发明方法实施例一参考图 3的架构图和图 6的流程图，本实施例中，用户开机， MS/AT向 CDMA20001x或者 HRPD网络发起 CMIPv4接入， MS/AT通过向 PDSN发送移动 IP注册请求发起向 CDMA2000***的接入步骤。 PDSN在收到移动 IP注册请求后， PDSN作为 PCEF-2, 与 PCRF实体建立 IP-CAN会话 -2, 并将 MS/AT的接入方式（ CMIPv4-支持反向隧道）告知 PCRF实体； HA/LMA 在收到 PDSN发送来的移动 IP注册请求后， HA/LMA作为 PCEF-1 ,与 PCRF 实体建立 IP-CAN会话 -1 , 因为在建立两个 IP-CAN会话时，用户标识、分组数据网的标识、终端 IP地址等信息是相同的， PCRF会将此两个 IP-CAN会话关联；并且， PCEF-2告知了 PCRF当前终端的接入方式是： CMIPv4-支持反向隧道，因此 PCRF实体知道此时计费的功能网元是 HA/LMA, PCRF实体在下发计费策略是会下发到 PCEF-1 而不是 PCEF-2 , PCEF-1将完成计费和不同 IP连接数据分发等功能， PCEF-2将完成承载绑定、事件上报等功能。该方法包括如下步骤： The present invention also provides a policy and charging control method. When the MS/AT accesses the CDMA2000 system through the MIP mode, both the HA/LMA and the PDSN establish an IP-CAN message with the PCRF, and the two IP-CANs that the PCRF will establish. The session is associated, and one of the HA/LMA and the PDSN is used as the charging network element. The PCRF then sends the charging policy to the charging network element. The following is a description of the method embodiment of the present invention with reference to the accompanying drawings, with reference to the architecture diagram of FIG. 3 and the flowchart of FIG. 6. In this embodiment, the user boots, and the MS/AT initiates CMIPv4 access to the CDMA2000 1x or HRPD network. The MS/AT initiates an access procedure to the CDMA2000 system by sending a Mobile IP registration request to the PDSN. PDSN is receiving mobile After the IP registration request, the PDSN acts as the PCEF-2, establishes an IP-CAN session-2 with the PCRF entity, and informs the PCRF entity of the MS/AT access mode (CMIPv4-supports the reverse tunnel); the HA/LMA receives the PDSN. After the mobile IP registration request is sent, HA/LMA acts as PCEF-1 and establishes IP-CAN session-1 with the PCRF entity, because when establishing two IP-CAN sessions, the user identity, the identity of the packet data network, and the terminal IP The information such as the address is the same, the PCRF will associate the two IP-CAN sessions; and PCEF-2 informs the PCRF that the current terminal access mode is: CMIPv4-supports the reverse tunnel, so the PCRF entity knows the charging at this time. The functional network element is HA/LMA. The PCRF entity will send the accounting policy to PCEF-1 instead of PCEF-2. PCEF-1 will complete the functions of billing and different IP connection data distribution. PCEF-2 will Complete the functions of bearer binding, event reporting, and so on. The method comprises the following steps:

601 : MS/AT 接入 PDSN, 并与 PDSN 成功协商链路控制协议（Lmk Control Protocol, LCP); 601: The MS/AT accesses the PDSN, and successfully negotiates a Link Control Protocol (LCP) with the PDSN.

602: MS/AT与 PDSN成功完成 IP控制协议 ( Internet Protocol Control Protocol, IPCP ) 协商，并且 MS/AT不请求 PDSN分配 IP地址； 603: PDSN检测该用户为 MIP用户，发送移动 IP代理公告（ MIP Agent602: The MS/AT and the PDSN successfully complete the IP Protocol (IPCP) negotiation, and the MS/AT does not request the PDSN to allocate an IP address. 603: The PDSN detects that the user is a MIP user, and sends a mobile IP proxy advertisement (MIP). Agent

Advertisement )给 MS/AT; Advertisement ) to MS/AT;

604: MS/AT 向 PDSN发送移动 IP 注册请求（Mobile IP Registration Request, RRQ ) , 请求 MIP会话的注册； 604: The MS/AT sends a Mobile IP Registration Request (RRQ) to the PDSN to request registration of the MIP session.

605: PDSN收到该 MIP RRQ后， PDSN作为 PCEF-2向 PCRF实体发起 IP-CAN会话 -2建立指示，与 PCRF实体建立 IP-CAN会话 -2 , 该 IP-CAN会话 -2建立指示携带用户标识、分组数据网的标识及终端 IP地址等信息（其中分组数据网的标识及终端 IP地址为可选 ),以及 MS/AT的接入方式（ CMIPv4- 支持反向隧道）；若为漫游场景， PDSN是向拜访 PCRF( visit PCRF, vPC F )发起 IP-CAN 会话 -2建立指示， vPCRF再将该 IP-CAN会话 -2建立指示转发至归属 PCRF ( home PCRF, hPC F )；若不是漫游场景， PDSN是向 hPCRF发起 IP-CAN 会话 -2建立指示； 605: After receiving the MIP RRQ, the PDSN, as the PCEF-2, initiates an IP-CAN session-2 establishment indication to the PCRF entity, and establishes an IP-CAN session-2 with the PCRF entity, where the IP-CAN session-2 establishes an indication to carry the user. Information such as identification, packet data network identifier, and terminal IP address (where the packet data network identifier and terminal IP address are optional), and MS/AT access mode (CMIPv4-support reverse tunnel); The PDSN initiates an IP-CAN Session-2 setup indication to the Visit PCRF (vPC F), and the vPCRF forwards the IP-CAN Session-2 Setup indication to the Home PCRF (home PCRF, hPC F); Scenario, the PDSN initiates an IP-CAN session-2 establishment indication to the hPCRF;

606: PDSN向 HA/LMA发送 MIP RRQ, 请求与 HA/LMA关联，其中携带用户标识、分组数据网的标识及终端 IP地址等信息（可选）； 606: The PDSN sends a MIP RRQ to the HA/LMA, requesting association with the HA/LMA, where Carry information such as user ID, packet data network identifier, and terminal IP address (optional);

607: HA/LMA 收到 MIP RRQ 后， HA/LMA作为 PCEF-1 向 PCRF ( hPC F )发送 IP-CAN会话 -1建立指示，该 IP-CAN会话 -1建立指示携带用户标识、分组数据网的标识及终端 IP地址等信息； 608: PC F建立与 HA/LMA 间的 IP-CAN会话 -1；因为 IP-CAN会话 -1 建立指示与 IP-CAN会话 -2建立指示携带的用户标识相同（当 IP-CAN会话 -2建立指示只携带用户标识时），或携带的用户标识及分组数据网的标识均相同（当 IP-CAN会话 -2建立指示携带了用户标识及分组数据网的标识时），或携带的用户标识、分组数据网的标识及终端 IP 地址等信息均相同（当 IP-CAN会话 -2建立指示携带了用户标识、分组数据网的标识及终端 IP地址等信息时）， PCRF ( hPCRF ) 实体会将此两个 IP-CAN会话关联； 607: After the HA/LMA receives the MIP RRQ, the HA/LMA sends an IP-CAN session-1 establishment indication to the PCRF (hPC F) as the PCEF-1, and the IP-CAN session-1 establishment indication carries the user identifier, the packet data network. Information such as the identity and terminal IP address; 608: PC F establishes an IP-CAN session-1 with HA/LMA; because the IP-CAN Session-1 setup indication is the same as the user ID carried by the IP-CAN Session-2 setup indication (When the IP-CAN Session-2 establishment indication only carries the user identity), or the carried user identity and the identity of the packet data network are the same (when the IP-CAN Session-2 setup indication carries the user identity and the identity of the packet data network) Time), or carry the same information such as the user identity, the identity of the packet data network, and the terminal IP address (when the IP-CAN session-2 setup indication carries the user identity, the identity of the packet data network, and the terminal IP address, etc.) , the PCRF ( hPCRF ) entity associates the two IP-CAN sessions;

609: 由于 PCEF-2告知了 PCRF实体当前终端的接入方式是： CMIPv4- 支持反向隧道，因此 PCRF ( hPCRF ) 实体知道此时计费的功能网元是 HA/LMA, PCRF ( hPCRF ) 实体向 HA/LMA返回 IP-CAN会话 -1建立确认，并携带计费策略； 609: Since PCEF-2 informs the PCRF entity that the current terminal access mode is: CMIPv4- supports reverse tunneling, so the PCRF (hPCRF) entity knows that the functional network element for charging at this time is HA/LMA, PCRF (hPCRF) entity Returning an IP-CAN session-1 to the HA/LMA to establish an acknowledgment and carrying a charging policy;

610 : HA/LMA 向 PDSN 发送 MIP 移动 IP 注册应答（Mobile IP Registration Reply, RRP ) ； 610: The HA/LMA sends a MIP Mobile IP Registration Reply (RRP) to the PDSN;

611 : PCRF实体将更新后的 QoS策略与事件上报策略等通过 IP-CAN会话 -2下发至 PDSN; 若为漫游场景， hPCRF将上述策略发送至 vPCRF, 再由 vPCRF将上述策略下发至 PDSN; 若不是漫游场景，则 hPCRF 直接将上述策略下发至 PDSN; 步骤 611还可以在步骤 608之后便执行，即与步骤 609同时执行。 612: PDSN向 MS/AT回复 MIP RRP。 613: MS/AT通过 HA/LMA开始与外部网络互通数据艮文。 611: The PCRF entity sends the updated QoS policy and the event reporting policy to the PDSN through the IP-CAN session-2. If the scenario is a roaming scenario, the hPCRF sends the policy to the vPCRF, and the vPCRF sends the policy to the PDSN. If it is not a roaming scenario, the hPCRF directly sends the foregoing policy to the PDSN; Step 611 can also be performed after step 608, that is, simultaneously with step 609. 612: The PDSN replies to the MIP RRP to the MS/AT. 613: The MS/AT starts to communicate with the external network through the HA/LMA.

实施例二参考图 4的架构图和图 7的流程图，本实施例中，用户开机， MS/AT向 CDMA20001x或者 HRPD网络发起 CMIPv4接入， MS/AT通过向 PDSN发送移动 IP注册请求发起向 CDMA2000***的接入步骤。 PDSN在收到移动 IP注册请求后， PDSN作为 PCEF-2, 与 PCRF实体建立 IP-CAN会话 -2, 并将 MS/AT的接入方式（ CMIPv4-不支持反向隧道）告知 PCRF; HA/LMA在收到 PDSN发送来的移动 IP注册请求后， HA/LMA作为 PCEF-1 , 与 PCRF 实体建立 IP-CAN会话 -1 , 因为在建立两个 IP-CAN会话时，用户标识、分组数据网的标识及终端 IP地址等信息是相同的， PCRF实体会将此两个 IP-CAN 会话关联；并且， PCEF-2告知了 PCRF实体当前终端的接入方式是： CMIPv4- 不支持反向隧道，因此 PCRF实体知道此时计费的功能网元是 PD SN， PCRF 实体在下发计费策略是会下发到 PCEF-2而不是 PCEF-1 , PCEF-1将完成不同 IP连接数据分发等功能， PCEF-2将完成计费、承载绑定和事件上报等功能。该方法包括如下步骤： 701 : MS/AT接入 PDSN, 并与 PDSN成功协商 LCP; Embodiment 2 Referring to the architecture diagram of FIG. 4 and the flowchart of FIG. 7, in this embodiment, when the user boots, the MS/AT initiates CMIPv4 access to the CDMA2000 1x or HRPD network, and the MS/AT initiates a mobile IP registration request to the PDSN to initiate the CDMA2000 system. Access step. After receiving the mobile IP registration request, the PDSN acts as PCEF-2, establishes an IP-CAN session-2 with the PCRF entity, and informs the PCRF of the MS/AT access mode (CMIPv4- does not support reverse tunneling); HA/ After receiving the mobile IP registration request sent by the PDSN, the HA/LMA acts as PCEF-1 and establishes an IP-CAN session-1 with the PCRF entity, because when establishing two IP-CAN sessions, the user identity and the packet data network The information such as the identifier and the terminal IP address are the same. The PCRF entity associates the two IP-CAN sessions. Moreover, PCEF-2 informs the PCRF entity that the current terminal access mode is: CMIPv4- does not support reverse tunneling. Therefore, the PCRF entity knows that the function network element for charging at this time is a PD SN, and the PCRF entity delivers the charging policy to PCEF-2 instead of PCEF-1, and PCEF-1 will perform functions such as data distribution of different IP connections. PCEF-2 will perform functions such as billing, bearer binding, and event reporting. The method includes the following steps: 701: The MS/AT accesses the PDSN, and successfully negotiates the LCP with the PDSN;

702: MS/AT与 PDSN成功完成 IPCP，并且 MS/AT不请求 PDSN分配 IP地址； 702: The MS/AT and the PDSN successfully complete the IPCP, and the MS/AT does not request the PDSN to allocate an IP address;

703: PDSN检测该用户为 MIP用户，发送 MIP Agent Advertisement给 MS/AT; 704： MS/AT向 PDSN发送 MIP RRQ，请求 MIP会话的注册； 703: The PDSN detects that the user is a MIP user, and sends a MIP Agent Advertisement to the MS/AT. 704: The MS/AT sends a MIP RRQ to the PDSN to request registration of the MIP session.

705: PDSN收到该 MIP RRQ后， PDSN作为 PCEF-2向 PCRF发起 IP-CAN 会话 -2建立指示，与 PCRF建立 IP-CAN会话 -2，该 IP-CAN会话 -2建立指示携带用户标识、分组数据网的标识及终端 IP地址等信息（其中分组数据网的标识及终端 IP地址为可选），以及 MS/AT的接入方式（ CMIPv4-不支持反向隧道）；若为漫游场景， PDSN是向 vPCRF发起 IP-CAN会话 -2建立指示， vPCRF 再将该 IP-CAN会话 -2建立指示转发至 hPCRF; 若不是漫游场景， PDSN是向 hPCRF发起 IP-CAN会话 -2建立指示； 706: PDSN发送 MIP RRQ给 HA/LMA, 请求与 HA/LMA 关联，其中携带用户标识、分组数据网的标识及终端 IP地址等信息（其中分组数据网的标识及终端 IP地址为可选 ) ； 705: After receiving the MIP RRQ, the PDSN, as the PCEF-2, initiates an IP-CAN session-2 establishment indication to the PCRF, and establishes an IP-CAN session-2 with the PCRF. The IP-CAN session-2 establishment indication carries the user identifier, Information such as the identity of the packet data network and the IP address of the terminal (where the identity of the packet data network and the IP address of the terminal are optional), and the access mode of the MS/AT (CMIPv4- does not support reverse tunneling); The PDSN initiates an IP-CAN Session-2 setup indication to the vPCRF, and the vPCRF forwards the IP-CAN Session-2 Setup indication to the hPCRF; if not the roaming scenario, the PDSN initiates an IP-CAN Session-2 Setup indication to the hPCRF; 706: The PDSN sends the MIP RRQ to the HA/LMA, and the request is associated with the HA/LMA, where the user identifier, the identifier of the packet data network, and the terminal IP address are carried (the identifier of the packet data network and the terminal IP address are optional);

707: HA/LMA收到 MIP RRQ后， HA/LMA作为 PCEF-1向 PCR hPCRF ) 实体发送 IP-CAN会话 -1建立指示，请求与 PCRF建立 IP-CAN会话 -1 , 该请求中携带用户标识、分组数据网的标识及终端 IP地址等信息； 707: After the HA/LMA receives the MIP RRQ, the HA/LMA sends an IP-CAN session-1 establishment indication to the PCR hPCRF entity as the PCEF-1, and requests to establish an IP-CAN session-1 with the PCRF, where the request carries the user identifier. Information such as the identity of the packet data network and the terminal IP address;

708: PCRF实体建立与 HA/LMA 间的 IP-CAN会话 -1 ;因为在请求建立该 IP-CAN会话 -1时，与请求建立 IP-CAN会话 -2时携带的用户标识相同（当 IP-CAN会话 -2建立指示只携带用户标识时 ) ，或携带的用户标识及分组数据网的标识均相同 (当 IP-CAN会话 -2建立指示携带了用户标识及分组数据网的标识时），或携带的用户标识、分组数据网的标识及终端 IP地址等信息均相同（当 IP-CAN会话 -2建立指示携带了用户标识、分组数据网的标识及终端 IP地址等信息时）， PCRF ( hPCRF ) 实体会将此两个 IP-CAN会话关联； 708: The PCRF entity establishes an IP-CAN session-1 with the HA/LMA; because when the IP-CAN session-1 is requested to be established, it is the same as the user identifier carried when requesting the establishment of the IP-CAN session-2 (when IP- The CAN session-2 establishment indication only carries the user identification), or the carried user identity and the identity of the packet data network are the same (when the IP-CAN session-2 establishment indication carries the user identity and the identity of the packet data network), or The information such as the carried user ID, the identifier of the packet data network, and the terminal IP address are the same (when the IP-CAN session-2 setup indication carries the user identifier, the identifier of the packet data network, and the terminal IP address, etc.), PCRF (hPCRF) The entity will associate these two IP-CAN sessions;

709: PCRF ( hPCRF ) 实体向 HA/LMA返回 IP-CAN会话 -1建立确认； 709: The PCRF (hPCRF) entity returns an IP-CAN session to the HA/LMA -1 establishes an acknowledgment;

710: HA/LMA向 PDSN发送 MIP RRP; 710: The HA/LMA sends a MIP RRP to the PDSN.

711 : 由于 PCEF-2告知了 PCRF实体当前终端的接入方式是： CMIPv4- 不支持反向隧道，因此 PCRF实体知道此时计费的功能网元是 PDSN, PCRF 实体通过 IP-CAN会话 -2向 PDSN下发计费策略、更新后的 QoS策略与事件上报策略等；若为漫游场景， hPCRF将上述策略发送至 vPCRF, 再由 vPCRF将上述策略下发至 PDSN; 若不是漫游场景，则 hPCRF 直接将上述策略下发至 PDSN; 步骤 711还可以在步骤 708之后便执行，即与步骤 709同时执行。 712: PDSN向终端回复 MIP RRP。 711: Since PCEF-2 informs the PCRF entity that the current terminal access mode is: CMIPv4- does not support reverse tunneling, so the PCRF entity knows that the functional network element for charging at this time is a PDSN, and the PCRF entity passes the IP-CAN session-2. The charging policy, the updated QoS policy, and the event reporting policy are sent to the PDSN. If the roaming scenario is performed, the hPCRF sends the policy to the vPCRF, and then the vPCRF sends the policy to the PDSN; if not, the hPCRF The above policy is directly sent to the PDSN; step 711 can also be performed after step 708, that is, simultaneously with step 709. 712: The PDSN replies to the terminal with a MIP RRP.

713: MS/AT通过 HA/LMA接收下行数据艮文，通过 PDSN外发上行数据报文。实施例三参考图 3的架构图和图 8的流程图，本实施例中，用户开机， MS/AT向 CDMA20001x或者 HRPD网络发起 PMIPv4接入， MS/AT通过向 PDSN发送点对点协议 ( Point to Point Protocol, PPP )会话发起向 CDMA2000***的接入步骤。 PDSN在收到 PPP会话的 IP控制协议协商请求后， PDSN作为 PCEF-2,与 PCRF实体建立 IP-CAN会话 -2,并将 MS/AT的接入方式（ PMIPv4 ) 告知 PCRF实体； HA/LMA在收到 PDSN发送来的代理移动 IP注册请求后， HA/LMA作为 PCEF-1 , 与 PCRF实体建立 IP-CAN会话 -1 , 因为在建立两个 IP-CAN会话时，用户标识和其他信息（APN等）是相同的， PCRF会将此两个 IP-CAN会话关联；并且， PCEF-2告知了 PCRF当前终端的接入方式是： PMIPv4, 因此 PCRF知道此时计费的功能网元是 HA/LMA, PCRF实体在下发计费策略是会下发到 PCEF-1 而不是 PCEF-2， PCEF-1将完成计费和不同 IP连接数据分发等功能， PCEF-2将完成承载绑定和事件上报等功能。该方法包括如下步骤： 801 : MS/AT接入 PDSN, 并与 PDSN成功协商 LCP; 713: The MS/AT receives the downlink data packet through the HA/LMA, and sends the uplink data packet through the PDSN. Embodiment 3 Referring to the architecture diagram of FIG. 3 and the flowchart of FIG. 8, in this embodiment, when the user boots, the MS/AT initiates PMIPv4 access to the CDMA2000 1x or HRPD network, and the MS/AT sends a point-to-point protocol to the PDSN (Point to Point). Protocol, PPP) The session initiates an access step to the CDMA2000 system. After receiving the IP control protocol negotiation request of the PPP session, the PDSN acts as the PCEF-2, establishes an IP-CAN session-2 with the PCRF entity, and informs the PCRF entity of the MS/AT access mode (PMIPv4); HA/LMA After receiving the proxy mobile IP registration request sent by the PDSN, the HA/LMA acts as PCEF-1 and establishes an IP-CAN session-1 with the PCRF entity because the user identity and other information are used when establishing two IP-CAN sessions ( APN, etc.) is the same, the PCRF will associate the two IP-CAN sessions; and PCEF-2 informs the PCRF that the current terminal access mode is: PMIPv4, so the PCRF knows that the functional network element for charging at this time is HA. /LMA, the PCRF entity will send the accounting policy to PCEF-1 instead of PCEF-2. PCEF-1 will complete the functions of billing and different IP connection data distribution. PCEF-2 will complete the bearer binding and event. Reporting and other functions. The method includes the following steps: 801: The MS/AT accesses the PDSN, and successfully negotiates the LCP with the PDSN;

802: MS/AT向 PDSN发送 IPCP协商请求，并且 MS/AT请求为终端分配 IP地址； 802: The MS/AT sends an IPCP negotiation request to the PDSN, and the MS/AT requests to allocate an IP address for the terminal;

803: PDSN收到该 IP控制协议协商请求后， PDSN作为 PCEF-2向 PCRF 实体发起 IP-CAN会话 -2建立指示，以请求与 PCRF实体建立 IP-CAN会话 -2, IP-CAN会话 -2建立指示携带用户标识、分组数据网的标识及终端 IP地址等信息（分组数据网的标识及终端 IP地址为可选 ) , 以及 MS/AT的接入方式（PMIPv4 ) ；若为漫游场景， PDSN是向 vPCRF发起 IP-CAN会话 -2建立指示， vPCRF 再将该 IP-CAN会话 -2建立指示转发至 hPCRF; 若不是漫游场景， PDSN是向 hPCRF发起 IP-CAN会话 -2建立指示； 803: After receiving the IP control protocol negotiation request, the PDSN, as the PCEF-2, initiates an IP-CAN session-2 establishment indication to the PCRF entity to request to establish an IP-CAN session-2 with the PCRF entity, and the IP-CAN session-2 Establishing information such as carrying the user ID, the identifier of the packet data network, and the IP address of the terminal (the identifier of the packet data network and the terminal IP address are optional), and the access mode of the MS/AT (PMIPv4); if it is a roaming scenario, the PDSN Is to initiate an IP-CAN session-2 establishment indication to the vPCRF, and the vPCRF forwards the IP-CAN session-2 establishment indication to the hPCRF; if not the roaming scenario, the PDSN initiates an IP-CAN session-2 establishment indication to the hPCRF;

804: PDSN向 HA/LMA发送代理移动 IP注册请求（Proxy Registration Request, PRRQ ) , 以请求与 HA/LMA关联，其中携带用户标识、分组数据网的标识及终端 IP地址等信息（分组数据网的标识及终端 IP地址为可选）； 805: HA/LMA收到 PRRQ后， HA/LMA作为 PCEF-1向 PCRF ( hPCRF ) 实体发送 IP-CAN会话 -1建立指示，以请求与 PCRF实体建立 IP-CA 会话 -1 , 该 IP-CAN会话 - 1建立指示携带用户标识、分组数据网的标识及终端 IP 地址等信息； 806: PCRF建立与 HA/LMA 间的 IP-CAN会话 -1；因为 IP-CAN会话 -1 建立指示 IP-CAN会话 -2建立指示携带的用户标识相同（当 IP-CAN会话 -2 建立指示只携带用户标识时），或携带的用户标识及分组数据网的标识均相同（当 IP-CAN会话 -2建立指示携带了用户标识及分组数据网的标识时），或携带的用户标识、分组数据网的标识及终端 IP 地址等信息均相同（当 IP-CA 会话 -2建立指示携带了用户标识、分组数据网的标识及终端 IP地址等信息时）， PCRF ( hPCRF ) 实体会将此两个 IP-CAN会话关联； 804: The PDSN sends a proxy mobile IP registration request (PRRQ) to the HA/LMA to request association with the HA/LMA, where the user identifier, the identifier of the packet data network, and the terminal IP address are carried (packet data network The identification and terminal IP address are optional); 805: After the HA/LMA receives the PRRQ, the HA/LMA sends an IP-CAN session-1 establishment indication to the PCRF (hPCRF) entity as PCEF-1 to request to establish an IP-CA session-1 with the PCRF entity, the IP-CAN Session-1 establishes an indication of carrying the user identity, the identity of the packet data network, and the terminal IP address; 806: The PCRF establishes an IP-CAN session-1 with the HA/LMA; because the IP-CAN session-1 establishes the indication IP-CAN The session-2 establishment indication carries the same user identity (when the IP-CAN session-2 establishment indication only carries the user identity), or the carried user identity and the identity of the packet data network are the same (when the IP-CAN session-2 establishment indication is set) When the user ID and the identifier of the packet data network are carried, or the information of the user identifier, the identifier of the packet data network, and the terminal IP address are the same (when the IP-CA session-2 establishment indication carries the user identifier, the packet data network) When the identifier and the terminal IP address are used, the PCRF (hPCRF) entity associates the two IP-CAN sessions;

807: 由于 PCEF-2告知了 PCRF实体当前终端的接入方式是： PMIPv4, 因此 PCRF 实体知道此时计费的功能网元是 HA/LMA, PCRF ( hPCRF ) 实体向 HA/LMA返回 IP-CAN会话 -1建立确认，并携带计费策略； 808: HA/LMA向 PDSN发送 PRRP (代理移动 IP注册应答 ) ； 807: Since PCEF-2 informs the PCRF entity that the current terminal access mode is: PMIPv4, the PCRF entity knows that the functional network element for charging at this time is HA/LMA, and the PCRF (hPCRF) entity returns IP-CAN to the HA/LMA. Session-1 establishes an acknowledgment and carries a charging policy; 808: The HA/LMA sends a PRRP (Proxy Mobile IP Registration Reply) to the PDSN;

809: PCRF通过 IP-CAN会话 -2向 PDSN下发更新后的 QoS策略与事件上报策略等；若为漫游场景， hPCRF将上述策略发送至 vPCRF, 再由 vPCRF将上述策略下发至 PDSN; 若不是漫游场景，则 hPCRF 直接将上述策略下发至 PDSN; 步骤 809还可以在步骤 806之后便执行，即与步骤 807同时执行。 810: PDSN与 MS/AT完成 IP控制协议协商 , 并把 IP地址发送给终端。 811 : MS/AT通过 HA/LMA与外部网络互通数据才艮文。 809: The PCRF sends the updated QoS policy and the event reporting policy to the PDSN through the IP-CAN session-2; if it is a roaming scenario, the hPCRF sends the policy to the vPCRF, and the vPCRF sends the policy to the PDSN; The hPCRF directly sends the above policy to the PDSN. Step 809 can also be performed after step 806, that is, simultaneously with step 807. 810: The PDSN and the MS/AT complete the IP control protocol negotiation, and send the IP address to the terminal. 811: MS/AT communicates with the external network through HA/LMA.

实施例四参考图 3的架构图和图 9的流程图，本实施例中，用户开机， MS/AT向 CDMA20001x或者 HRPD网络发起 CMIPv6接入， MS/AT通过向 PDSN发送 PPP会话的 IPv6控制协商请求，从而发起向 CDMA2000***的接入步骤。 PDSN在收到 PPP会话的 IPv6控制协商 ϊ會求后， PDSN作为 PCEF-2,与 PCRF 实体建立 IP-CAN会话 -2, 并将 MS/AT的接入方式（ CMIPv6 )告知 PCRF 实体； HA/LMA在收到 MS/AT发送来的绑定更新后， HA/LMA作为 PCEF-1 , 与 PCRF实体建立 IP-CAN会话 -1，因为在建立两个 IP-CAN会话时，用户标识和其他信息（ APN等）是相同的， PCRF实体会将此两个 IP-CAN会话关联；并且， PCEF-2告知了 PCRF实体当前终端的接入方式是： CMIPv6 , 因此 PCRF实体知道此时计费的功能网元是 HA/LMA, PCRF实体在下发计费策略是会下发到 PCEF-1而不是 PCEF-2, PCEF-1将完成计费、不同 IP连接数据分发等功能， PCEF-2将完成承载绑定、事件上报等功能。该方法包括如下步驟： Embodiment 4 Referring to the architecture diagram of FIG. 3 and the flowchart of FIG. 9, in this embodiment, when the user starts up, the MS/AT initiates CMIPv6 access to the CDMA2000 1x or HRPD network, and the MS/AT sends the CMIPv6 access to the PDSN. The IPv6 control negotiation request sent to the PPP session initiates an access procedure to the CDMA2000 system. After receiving the IPv6 control negotiation of the PPP session, the PDSN acts as the PCEF-2, establishes an IP-CAN session-2 with the PCRF entity, and informs the PCRF entity of the MS/AT access mode (CMIPv6); HA/ After the LMA receives the binding update sent by the MS/AT, the HA/LMA acts as PCEF-1 and establishes an IP-CAN session-1 with the PCRF entity, because the user identity and other information are used when establishing two IP-CAN sessions. (APN, etc.) is the same, the PCRF entity will associate the two IP-CAN sessions; and PCEF-2 informs the PCRF entity that the current terminal access mode is: CMIPv6, so the PCRF entity knows the function of charging at this time. The network element is HA/LMA, and the PCRF entity delivers the charging policy to PCEF-1 instead of PCEF-2. PCEF-1 will perform charging and different IP connection data distribution functions. PCEF-2 will complete the bearer. Binding, event reporting, and more. The method comprises the following steps:

901 : MS/AT接入 PDSN, 并与 PDSN成功协商 LCP; 901: The MS/AT accesses the PDSN, and successfully negotiates with the PDSN to the LCP;

902: MS/AT向 PDSN发送 IPv6CP协商请求，且不请求为终端分配 IP 地址， PDSN与 MS/AT完成 IPv6CP协商； 903: PDSN收到上述 IPv6CP协商请求后，作为 PCEF-2向 PCRF实体发起 IP-CA 会话 -2建立指示，以请求与 PCRF实体建立 IP-CAN会话 -2 , IP-CAN会话 -2建立指示携带用户标识、分组数据网的标识及终端 IP地址等信息（分组数据网的标识及终端 IP地址为可选），以及 MS/AT的接入方式 ( CMIPv6 ) ；若为漫游场景， PDSN是向 vPCRF发起 IP-CAN会话 -2建立指示， vPCRF 再将该 IP-CAN会话 -2建立指示转发至 hPCRF; 若不是漫游场景， PDSN是向 hPCRF发起 IP-CAN会话 -2建立指示； 902: The MS/AT sends an IPv6CP negotiation request to the PDSN, and does not request to allocate an IP address to the terminal, and the PDSN and the MS/AT complete the IPv6CP negotiation. 903: After receiving the IPv6CP negotiation request, the PDSN sends the IP as the PCEF-2 to the PCRF entity. - CA session-2 establishment indication to request to establish an IP-CAN session-2 with the PCRF entity, the IP-CAN session-2 establishing indication carrying the user identity, the identity of the packet data network, and the terminal IP address (identification of the packet data network) And the terminal IP address is optional), and the MS/AT access mode (CMIPv6); if it is a roaming scenario, the PDSN initiates an IP-CAN session-2 establishment indication to the vPCRF, and the vPCRF then the IP-CAN session-2 Establishing an indication to forward to the hPCRF; if not a roaming scenario, the PDSN initiates an IP-CAN session-2 establishment indication to the hPCRF;

904： MS/AT发送绑定更新给 HA/LMA； 904: MS/AT sends a binding update to HA/LMA;

905: HA/LMA收到绑定更新后， HA/LMA作为 PCEF-1向 PCRF( hPCRF ) 实体发送 IP-CAN会话 -1建立指示，以请求与 PCRF实体建立 IP-CAN会话 -1 , 该 IP-CAN会话 - 1建立指示携带用户标识、分组数据网的标识及终端 IP 地址等信息； 905: After the HA/LMA receives the binding update, the HA/LMA sends an IP-CAN session-1 establishment indication to the PCRF (hPCRF) entity as PCEF-1 to request to establish an IP-CAN session-1 with the PCRF entity, the IP -CAN session - 1 establishes information indicating carrying the user identity, the identity of the packet data network, and the terminal IP address;

906: PCRF实体建立与 HA/LMA 间的 IP-CAN会话 -1 ; 因为 IP-CAN会话 -1建立指示 IP-CAN会话 -2建立指示携带的用户标识相同（当 IP-CAN会话 -2建立指示只携带用户标识时），或携带的用户标识及分组数据网的标识均相同（当 IP-CAN会话 -2 建立指示携带了用户标识及分组数据网的标识时），或携带的用户标识、分组数据网的标识及终端 IP地址等信息均相同（当 IP-CAN会话 -2建立指示携带了用户标识、分组数据网的标识及终端 IP地址等信息时）， PCRF ( hPC F ) 实体会将此两个 IP-CAN会话关联； 906: The PCRF entity establishes an IP-CAN session-1 with HA/LMA; because IP-CAN will Talk-1 establishes that the IP-CAN session-2 establishment indication carries the same user identity (when the IP-CAN session-2 establishment indication only carries the user identity), or the carried user identity and the identity of the packet data network are the same (when The IP-CAN session-2 establishes the indication that the user identifier and the identity of the packet data network are carried, or the information of the carried user identifier, the identifier of the packet data network, and the terminal IP address are the same (when the IP-CAN session-2 is established) When carrying the user identification, the identity of the packet data network, and the terminal IP address, the PCRF (hPC F) entity associates the two IP-CAN sessions;

907: 由于 PCEF-2告知了 PCRF实体当前终端的接入方式是 CMIPv6，因此 PCRF 实体知道此时计费的功能网元是 HA/LMA, PCRF ( hPCRF ) 实体向 HA/LMA返回 IP-CAN会话 -1建立确认，并携带计费策略； 908: HA/LMA向 MS/AT发送绑定确认（ Binding Acknowledgement, BA ), 并携带为终端分配的 IP地址； 907: Since PCEF-2 informs the PCRF entity that the current terminal access mode is CMIPv6, the PCRF entity knows that the functional network element for charging at this time is HA/LMA, and the PCRF (hPCRF) entity returns an IP-CAN session to the HA/LMA. -1 establishes an acknowledgment and carries a charging policy; 908: The HA/LMA sends a Binding Acknowledgement (BA) to the MS/AT, and carries an IP address assigned to the terminal;

909: PCRF实体通过 IP-CAN会话 -2向 PDSN下发更新后的 QoS策略与事件上报策略等；若为漫游场景， hPCRF将上述策略发送至 vPCRF, 再由 vPCRF将上述策略下发至 PDSN; 若不是漫游场景，则 hPCRF 直接将上述策略下发至 PDSN; 步骤 909还可以在步骤 906之后便执行，即与步骤 907同时执行。 910: MS/AT通过 HA/LMA与外部网络互通数据 ^艮文。 909: The PCRF entity sends the updated QoS policy and the event reporting policy to the PDSN through the IP-CAN session-2; if it is a roaming scenario, the hPCRF sends the policy to the vPCRF, and then the vPCRF sends the policy to the PDSN; If it is not a roaming scenario, the hPCRF directly sends the foregoing policy to the PDSN. Step 909 can also be performed after step 906, that is, simultaneously with step 907. 910: The MS/AT exchanges data with the external network through the HA/LMA.

实施例五参考图 3 的架构图和图 10的流程图，本实施例中，用户开机， MS/AT 向 CDMA20001x或者 HRPD网络发起 PMIPv6接入， MS/AT通过向 PDSN 发送 PPP会话发起向 CDMA2000***的接入步骤。 PDSN在收到 PPP会话的 IPv6控制协商请求后， PDSN作为 PCEF-2, 与 PCRF实体建立 IP-CAN会话 -2, 并将 MS/AT的接入方式（PMIPv6 )告知 PCRF实体； HA/LMA在收到 PDSN发送来的代理绑定更新后， HA/LMA作为 PCEF-1 , 与 PCRF实体建立 IP-CAN会话 -1 , 因为在建立两个 IP-CAN会话时，用户标识和其他信息 ( APN等）是相同的， PCRF实体会将此两个 IP-CAN会话关联；并且， PCEF-2 告知了 PCRF实体当前终端的接入方式是： PMIPv6, 因此 PCRF实体知道此时计費的功能网元是 HA/LMA, PCRF 实体在下发计费策略是会下发到 PCEF-1而不是 PCEF-2, PCEF-1将完成计费和不同 IP连接数据分发等功能， PCEF-2将完成承载绑定和事件上报等功能。该方法包括如下步驟： Embodiment 5 Referring to the architecture diagram of FIG. 3 and the flowchart of FIG. 10, in this embodiment, when the user boots, the MS/AT initiates PMIPv6 access to the CDMA2000 1x or HRPD network, and the MS/AT initiates the CDMA2000 system by sending a PPP session to the PDSN. Access steps. After receiving the IPv6 control negotiation request of the PPP session, the PDSN acts as the PCEF-2, establishes an IP-CAN session-2 with the PCRF entity, and informs the PCRF entity of the MS/AT access mode (PMIPv6); the HA/LMA is After receiving the proxy binding update sent by the PDSN, HA/LMA acts as PCEF-1 and establishes IP-CAN session-1 with the PCRF entity, because the user identity and other information are established when establishing two IP-CAN sessions. (APN, etc.) is the same, the PCRF entity will associate the two IP-CAN sessions; and PCEF-2 informs the PCRF entity that the current terminal access mode is: PMIPv6, so the PCRF entity knows the function of charging at this time. The network element is HA/LMA, and the PCRF entity delivers the charging policy to PCEF-1 instead of PCEF-2. PCEF-1 will perform charging and different IP connection data distribution functions, and PCEF-2 will complete the bearer. Binding and event reporting. The method comprises the following steps:

1001 : MS/AT接入 PDSN, 并与 PDSN成功协商 LCP; 1001: The MS/AT accesses the PDSN, and successfully negotiates with the PDSN to the LCP;

1002: MS/AT向 PDSN发送 IPv6CP请求，并 ϊ會求为终端分配 IP地址； 1002: The MS/AT sends an IPv6CP request to the PDSN, and then requests an IP address for the terminal;

1003: PDSN收到该 IPv6控制协商请求后， PDSN作为 PCEF-2向 PCRF 实体发起 IP-CAN会话 -2建立指示，以请求与 PCRF建立 IP-CAN会话 -2 , IP-CAN会话 -2建立指示携带用户标识、分组数据网的标识及终端 IP地址等信息（分组数据网的标识及终端 IP地址为可选），以及 MS/AT的接入方式 ( ΡΜΙΡνό ) ；若为漫游场景， PDSN是向 vPCRF发起 IP-CAN会话 -2建立指示， vPCRF 再将该 IP-CAN会话 -2建立指示转发至 hPCRF; 若不是漫游场景， PDSN是向 hPCRF发起 IP-CAN会话 -2建立指示； 1003: After receiving the IPv6 control negotiation request, the PDSN, as the PCEF-2, initiates an IP-CAN session-2 establishment indication to the PCRF entity, to request to establish an IP-CAN session-2 with the PCRF, and establish an IP-CAN session-2 indication. Carrying information such as the user ID, the identity of the packet data network, and the IP address of the terminal (the identifier of the packet data network and the IP address of the terminal are optional), and the access mode of the MS/AT ( ΡΜΙΡνό ); if it is a roaming scenario, the PDSN is The vPCRF initiates an IP-CAN session-2 setup indication, and the vPCRF forwards the IP-CAN Session-2 setup indication to the hPCRF; if not the roaming scenario, the PDSN initiates an IP-CAN Session-2 setup indication to the hPCRF;

1004 : PDSN 发送代理绑定更新（Proxy Binding Update , PBU ) 给 HA/LMA, 以请求与 HA/LMA关联， PBU携带用户标识、分组数据网的标识及终端 IP地址等信息（分组数据网的标识及终端 IP地址为可选）； 1005： HA/LMA收到 PBU后， HA/LMA作为 PCEF-1向 PCRF ( hPCRF ) 实体发送 IP-CAN会话 -1建立指示，以请求与 PCRF实体建立 IP-CAN会话 -1 , IP-CAN会话 -1建立指示携带用户标识、分组数据网的标识及终端 IP地址等信息； 1004: The PDSN sends a Proxy Binding Update (PBU) to the HA/LMA to request association with the HA/LMA. The PBU carries information such as the user identifier, the identifier of the packet data network, and the terminal IP address (identity of the packet data network). And the terminal IP address is optional); 1005: After the HA/LMA receives the PBU, the HA/LMA sends an IP-CAN session-1 establishment indication to the PCRF (hPCRF) entity as PCEF-1 to request to establish an IP with the PCRF entity. CAN session-1, IP-CAN session-1 establishment indication carries information such as user identity, identity of packet data network, and terminal IP address;

1006: PCRF实体建立与 HA/LMA 间的 IP-CAN会话 -1 ; 因为 IP-CAN 会话 -1建立指示与 IP-CAN会话 -2建立指示携带的用户标识相同（当 IP-CAN 会话 -2建立指示只携带用户标识时），或携带的用户标识及分组数据网的标识均相同（当 IP-CAN会话 -2建立指示携带了用户标识及分组数据网的标识时），或携带的用户标识、分组数据网的标识及终端 IP地址等信息均相同（当 IP-CAN会话 -2建立指示携带了用户标识、分组数据网的标识及终端 IP地址等信息时）， PCRF ( hPCRF ) 实体会将此两个 IP-CAN会话关联； 1006: The PCRF entity establishes an IP-CAN session-1 with the HA/LMA; since the IP-CAN Session-1 setup indication is the same as the user identity carried by the IP-CAN Session-2 setup indication (when the IP-CAN Session-2 is established) When the user ID is only carried, the user ID and the identifier of the packet data network are the same (when the IP-CAN session-2 establishment indication carries the user identifier and the identifier of the packet data network), or the user identifier carried, The information of the packet data network and the IP address of the terminal are the same (when When the IP-CAN Session-2 setup indication carries information such as the user identity, the identity of the packet data network, and the terminal IP address, the PCRF (hPCRF) entity associates the two IP-CAN sessions;

1007: 由于 PCEF-2告知了 PCRF当前终端的接入方式是 PMIPv6, 因此 PCRP知道此时计费的功能网元是 HA/LMA, PCRF( hPCRF )实体向 HA/LMA 返回 IP-CAN会话 -1建立确认，并携带计費策略； 1007: Since PCEF-2 informs the PCRF that the current terminal access mode is PMIPv6, PCRP knows that the functional network element for charging at this time is HA/LMA, and the PCRF (hPCRF) entity returns IP-CAN session-1 to HA/LMA. Establish an acknowledgement and carry a billing strategy;

1008: HA/LMA发送代理绑定应答 ( Proxy Binding Acknowledgement, PBA )给 PDSN; 1008: The HA/LMA sends a Proxy Binding Acknowledgement (PBA) to the PDSN;

1009: PCRF实体通过 IP-CA 会话 -2向 PDSN下发更新后的 QoS策略与事件上报策略等；若为漫游场景， hPCRF将上述策略发送至 vPCRF, 再由 vPCRF将上述策略下发至 PDSN; 若不是漫游场景，则 hPCRF 直接将上述策略下发至 PDSN; 步骤 1009还可以在步骤 1006之后便执行，即与步骤 1007同时执行。 1009: The PCRF entity sends the updated QoS policy and the event reporting policy to the PDSN through the IP-CA session-2; if it is a roaming scenario, the hPCRF sends the policy to the vPCRF, and then the vPCRF sends the policy to the PDSN; If it is not a roaming scenario, the hPCRF directly sends the foregoing policy to the PDSN. Step 1009 may also be performed after step 1006, that is, concurrently with step 1007.

1010: PDSN与 MS/AT完成 IPv6控制协商，并将 IP地址传送给终端。 1011 : MS/AT通过 HA/LMA与外部网络互通数据报文。在实施例一至实施例五中，也可以是 HA/LMA在发送 IP-CAN会话 -1建立指示时携带 MS/AT的接入方式，还可以采用其他方式将 MS/AT的接入方式告知 PCRF , 本发明对此不作限制。 1010: The PDSN and the MS/AT complete the IPv6 control negotiation and transmit the IP address to the terminal. 1011: The MS/AT exchanges data packets with the external network through the HA/LMA. In the first embodiment to the fifth embodiment, the HA/LMA may also carry the access mode of the MS/AT when transmitting the IP-CAN session-1 establishment indication, and may also notify the PCRF by using the MS/AT access mode in other manners. The invention is not limited thereto.

实施例六参考图 5的架构图和图 11 的流程图，本实施例中，用户开机， MS/AT 向 CDMA20001x或者 H PD网络发起 SIPv4接入， MS/AT通过向 PDSN发送 PPP会话的 IP控制协议协商请求 , 从而发起向 CDMA2000***的接入步骤。 PDSN在收到 PPP会话的 IP控制协议协商请求后 , PDSN作为 PCEF实体，与 PCRF实体建立 IP-CAN会话，并将 MS/AT的接入方式（ SIPv4 )告知 PCRF实体， PCRF实体将向 PCEF 实体下发计费和 QoS等策略， PCEF 将完成计费、不同 IP连接数据分发承载绑定和事件上报等功能。该方法包括如下步骤： Embodiment 6 Referring to the architecture diagram of FIG. 5 and the flowchart of FIG. 11, in this embodiment, when the user boots, the MS/AT initiates SIPv4 access to the CDMA2000 1x or H PD network, and the MS/AT sends IP control of the PPP session to the PDSN. The protocol negotiates a request to initiate an access step to the CDMA2000 system. After receiving the IP control protocol negotiation request of the PPP session, the PDSN acts as a PCEF entity, establishes an IP-CAN session with the PCRF entity, and informs the PCRF entity of the MS/AT access mode (SIPv4), and the PCRF entity will forward to the PCEF entity. After the policies such as accounting and QoS are delivered, the PCEF will perform functions such as charging, binding of different IP connection data, and event reporting. The method comprises the following steps:

1101 : MS/AT接入 PDSN, 并与 PDSN成功协商 LCP; 1101: The MS/AT accesses the PDSN, and successfully negotiates with the PDSN, LCP;

1102: MS/AT向 PD SN发送 IP控制协议协商请求； 1102: The MS/AT sends an IP control protocol negotiation request to the PD SN.

1103 : PDSN收到该 IP控制协议协商请求后， PDSN作为 PCEF实体向 PCRF发起 IP-CAN会话建立指示，与 PCRF实体建立 IP-CAN会话， IP-CAN 会话建立指示携带用户标识、分组数据网的标识及终端 IP地址等信息，以及 MS/AT的接入方式（ SIPv4 ) ；若为漫游场景， PDSN是向 vPCRF发起 IP-CAN会话 -2建立指示， vPCRF 再将该 IP-CAN会话 -2建立指示转发至 hPCRF; 若不是漫游场景， PDSN是向 hPCRF发起 IP-CAN会话 -2建立指示； 1103: After receiving the IP control protocol negotiation request, the PDSN, as a PCEF entity, initiates an IP-CAN session establishment indication to the PCRF, and establishes an IP-CAN session with the PCRF entity, where the IP-CAN session establishment indication carries the user identifier and the packet data network. Information such as the identifier and the terminal IP address, and the access mode of the MS/AT (SIPv4); if it is a roaming scenario, the PDSN initiates an IP-CAN session-2 establishment indication to the vPCRF, and the vPCRF establishes the IP-CAN session-2 again. The indication is forwarded to the hPCRF; if it is not a roaming scenario, the PDSN initiates an IP-CAN session-2 establishment indication to the hPCRF;

1104: PCRF实体向 PDSN下发计费策略、 QoS策略与事件上报策略等， PDSN将完成计费、不同 IP连接数据分发承载绑定和事件上报等功能。若为漫游场景， hPCRF将上述发送至 vPCRF, 再由 vPCRF将上述策略下发至 PDSN; 若不是漫游场景，则 hPCRF直接将上述策略下发至 PDSN; 1105: PDSN与 MS/AT完成 IPCP协商； 1104: The PCRF entity delivers a charging policy, a QoS policy, and an event reporting policy to the PDSN, and the PDSN performs functions such as charging, binding of different IP connection data, and event reporting. If it is a roaming scenario, the hPCRF sends the above to the vPCRF, and then the vPCRF sends the policy to the PDSN; if it is not the roaming scenario, the hPCRF directly sends the policy to the PDSN; 1105: The PDSN and the MS/AT complete the IPCP negotiation;

1106: MS/AT通过 PDSN与外部网络互通数据报文。 1106: The MS/AT exchanges data packets with the external network through the PDSN.

实施例七 Example 7

参考图 5的架构图和图 12的流程图，本实施例中，用户开机， MS/AT 向 CDMA20001x或者 HRPD网络发起 SIPv6接入， MS/AT通过向 PDSN发送 PPP会话的 IPv6控制协商请求，从而发起向 CDMA2000***的接入步骤。 PDSN在收到 PPP会话的 IPv6控制协商请求后， PDSN作为 PCEF实体，与 PCRF建立 IP-CAN会话，并将 MS/AT的接入方式（ SHV6 )告知 PCRF实体， PCRF实体将向 PCEF实体下发计费和 QoS等策略， PCEF实体将完成计费、不同 IP连接数据分发承载绑定和事件上报等功能。 Referring to the architecture diagram of FIG. 5 and the flowchart of FIG. 12, in this embodiment, when the user is powered on, the MS/AT initiates SIPv6 access to the CDMA2000 1x or HRPD network, and the MS/AT sends an IPv6 control negotiation request to the PDSN by using the PPP session, thereby Initiate an access step to the CDMA2000 system. After the PDSN receives the IPv6 control negotiation request of the PPP session, the PDSN acts as the PCEF entity, establishes an IP-CAN session with the PCRF, and informs the PCRF entity of the access mode (SHV6) of the MS/AT, and the PCRF entity delivers the packet to the PCEF entity. For policies such as billing and QoS, the PCEF entity will perform functions such as billing, bearer binding for different IP connection data distribution, and event reporting.

1201 : MS/AT接入 PDSN, 并与 PDSN成功协商 LCP; 1202: MS/AT向 PDSN发送 IPv6控制协商请求； 1201: The MS/AT accesses the PDSN, and successfully negotiates the LCP with the PDSN. 1202: The MS/AT sends an IPv6 control negotiation request to the PDSN.

1203: PDSN收到该 IPv6控制协商请求后， PDSN作为 PCEF实体向 PCRF 实体发起 IP-CAN会话建立指示，与 PCRF建立 IP-CAN会话，其中携带用户标识、分组数据网的标识及终端 IP地址等信息，以及 MS/AT的接入方式 ( SIPv6 ) ；若为漫游场景， PDSN是向 vPCRF发起 IP-CAN会话 -2建立指示， vPCRF 再将该 IP-CAN会话 -2建立指示转发至 hPCRF; 若不是漫游场景， PDSN是向 hPCRF发起 IP-CAN会话 -2建立指示； 1203: After receiving the IPv6 control negotiation request, the PDSN, as a PCEF entity, initiates an IP-CAN session establishment indication to the PCRF entity, and establishes an IP-CAN session with the PCRF, where the user identifier, the identifier of the packet data network, and the terminal IP address are carried. Information, and the access mode of the MS/AT (SIPv6); if it is a roaming scenario, the PDSN initiates an IP-CAN session-2 establishment indication to the vPCRF, and the vPCRF forwards the IP-CAN session-2 establishment indication to the hPCRF; Not a roaming scenario, the PDSN initiates an IP-CAN Session-2 setup indication to the hPCRF;

1204: PCRF实体向 PDSN下发计费策略、 QoS策略与事件上报策略等； PDSN将完成计费、不同 IP连接数据分发承载绑定及事件上报等功能。若为漫游场景， hPCRF将上述策略发送至 vPCRF, 再由 vPCRF将上述策略下发至 PDSN; 若不是漫游场景，则 hPCRF 直接将上述策略下发至 PDSN; 1204: The PCRF entity delivers a charging policy, a QoS policy, and an event reporting policy to the PDSN. The PDSN performs functions such as charging, binding of different IP connection data, and event reporting. If it is a roaming scenario, the hPCRF sends the above policy to the vPCRF, and then the vPCRF sends the above policy to the PDSN; if it is not the roaming scenario, the hPCRF directly sends the policy to the PDSN;

1205: PDSN与 MS/AT完成 IPv6CP协商； 1206: MS/AT通过 PDSN与外部网络互通数据报文。 1205: The PDSN and the MS/AT complete the IPv6CP negotiation. 1206: The MS/AT exchanges data packets with the external network through the PDSN.

工业实用性本发明提供一种策略与计费控制***及方法，能够在 CDMA2000***增强并使用现有的 PCC方案，且对现有 CDMA2000***的架构改动很小，简单易行。 Industrial Applicability The present invention provides a policy and charging control system and method capable of enhancing and using an existing PCC scheme in a CDMA2000 system, and having little change to the existing CDMA2000 system architecture is simple and easy.

Claims

权利要求书 Claim

1、一种策略与计费控制方法，包括： 1. A policy and charging control method, comprising:

当终端通过移动 IP的方式接入码分多址（ CDMA )***时，锚点网关与分组数据服务节点（PDSN ) 均与策略和计费规则功能（PCRF ) 实体建立 IP 连接接入网（ IP-CAN )会话，且所述 PCRF实体将建立的两个 IP-CAN会话关联；以及所述 PCRF实体向计费网元下发计费策略，所述计费网元为所述 PDSN 或锚点网关。 When the terminal accesses the code division multiple access (CDMA) system by means of mobile IP, both the anchor gateway and the packet data serving node (PDSN) establish an IP connection access network (IP) with the policy and charging rule function (PCRF) entity. -CAN) session, and the PCRF entity associates two established IP-CAN sessions; and the PCRF entity delivers a charging policy to the charging network element, the charging network element being the PDSN or anchor point Gateway.

2、如权利要求 1所述的方法，其中： 2. The method of claim 1 wherein:

锚点网关与 PDSN均与 PCRF建立 IP-CAN会话的步骤包括：所述 PDSN 收到移动 IP注册请求、或者 IP控制协议协商请求、或者 IPv6控制协议协商请求后，向所述 PCRF实体发送第二 IP-CAN会话建立指示，其中携带用户标识，或携带用户标识及分组数据网的标识，或携带用户标识、分组数据网的标识及用户终端的 IP地址， PCRF实体收到所述第二 IP-CAN会话建立指示后建立第二 IP-CAN会话；以及，所述锚点网关收到移动 IP注册请求、或者代理移动 IP注册请求、或者绑定更新、或者代理绑定更新后，向所述 PCRF 实体发起第一 IP-CAN会话建立指示，其中携带用户标识、分组数据网的标识及终端的 IP地址， PCRF实体收到所述第一 IP-CAN会话建立指示后建立第一 IP-CAN会话； PCRF 实体将建立的两个 IP-CAN会话关联的步骤包括：若所述第二 The step of establishing an IP-CAN session with the PCRF by the anchor gateway and the PDSN includes: after receiving the mobile IP registration request, or the IP control protocol negotiation request, or the IPv6 control protocol negotiation request, the PDSN sends the second to the PCRF entity. The IP-CAN session establishment indication, which carries the user identifier, or carries the user identifier and the identifier of the packet data network, or carries the user identifier, the identifier of the packet data network, and the IP address of the user terminal, and the PCRF entity receives the second IP- Establishing a second IP-CAN session after the CAN session establishment indication; and, after the anchor gateway receives the mobile IP registration request, or the proxy mobile IP registration request, or the binding update, or the proxy binding update, to the PCRF The entity initiates a first IP-CAN session establishment indication, where the user identifier, the identifier of the packet data network, and the IP address of the terminal are carried, and the PCRF entity establishes the first IP-CAN session after receiving the first IP-CAN session establishment indication; The step of associating the two IP-CAN sessions established by the PCRF entity includes:

IP-CAN会话建立指示仅携带用户标识，所述 PCRF 实体将携带了相同的用户标识的第一 IP-CAN会话与第二 IP-CAN会话关联，若所述第二 IP-CAN 会话建立指示携带了用户标识及分组数据网标识，所述 PCRF实体将携带了相同的用户标识及分组数据网标识的第一 IP-CAN会话与第二 IP-CAN会话关联，若所述第二 IP-CAN会话建立指示携带了用户标识、分组数据网标识及终端 IP地址，所述 PCRF实体将携带了相同用户标识、分组数据网标识及终端 IP地址的第一 IP-CAN会话与第二 IP-CAN会话关联。 The IP-CAN session establishment indication carries only the user identity, and the PCRF entity associates the first IP-CAN session carrying the same user identity with the second IP-CAN session, if the second IP-CAN session establishment indication carries a user identifier and a packet data network identifier, the PCRF entity associating the first IP-CAN session carrying the same user identifier and the packet data network identifier with the second IP-CAN session, if the second IP-CAN session The setup indication carries the user identifier, the packet data network identifier, and the terminal IP address, and the PCRF entity associates the first IP-CAN session carrying the same user identifier, the packet data network identifier, and the terminal IP address with the second IP-CAN session. .

3、如权利要求 2所述的方法，其中：当 PDSN 和锚点网关之间支持反向隧道时，所述终端的接入方式为 CMIPv4-支持反向隧道、或者 PMIPv4、或者 CMIPv6或者 PMIPv6; 当 PDSN 和锚点网关之间不支持反向隧道时，所述终端的接入方式为 CMIPv4-不支持反向隧道；所述第二 IP-CAN会话建立指示或第一 IP-CAN会话建立指示还携带所述终端的接入方式； 3. The method according to claim 2, wherein: when the reverse tunnel is supported between the PDSN and the anchor gateway, the access mode of the terminal is CMIPv4-supporting reverse tunnel, or PMIPv4, or CMIPv6 or PMIPv6; When the reverse tunnel is not supported between the PDSN and the anchor gateway, the access mode of the terminal is CMIPv4 - the reverse tunnel is not supported; the second IP-CAN session establishment indication or the first IP-CAN session establishment indication And carrying the access mode of the terminal;

PCRF实体收到第二 IP-CAN会话建立指示或第一 IP-CAN会话建立指示后，所述方法还包括：当终端的接入方式为 CMIPv4-支持反向隧道、或者 PMIPv4、或者 CMIPv6或者 PMIPv6时，判定此时计费网元为所述锚点网关， PCRF 实体在执行将建立的两个 IP-CAN会话关联的步骤之后，将计费策略下发至锚点网关；当终端的接入方式为 CMIPv4-不支持反向隧道时，判定此时计费网元为 PDSN, 所述 PCRF实体在执行将建立的两个 IP-CA 会话关联的步骤之后，将计费策略下发至 PDSN。 After the PCRF entity receives the second IP-CAN session establishment indication or the first IP-CAN session establishment indication, the method further includes: when the terminal access mode is CMIPv4-supporting reverse tunnel, or PMIPv4, or CMIPv6 or PMIPv6 When it is determined that the charging network element is the anchor gateway, the PCRF entity sends the charging policy to the anchor gateway after performing the step of associating the two IP-CAN sessions to be established; when the terminal accesses When the CMIPv4 does not support the reverse tunnel, it is determined that the charging network element is the PDSN, and the PCRF entity delivers the charging policy to the PDSN after performing the step of associating the two IP-CA sessions to be established.

4、如权利要求 1所述的方法，其中， PCRF实体将建立的两个 IP-CAN 会话关联的步骤之后，所述方法还包括：所述 PCRF实体向锚点网关下发数据路由分发策略与事件上报策略，向所述 PDSN下发更新后的服务质量策略与事件上报策略；以及所述锚点网关进行分组数据路由分发与事件上报；所述 PDSN进行承载绑定与事件上报。 The method of claim 1, wherein after the step of associating the two IP-CAN sessions established by the PCRF entity, the method further comprises: sending, by the PCRF entity, a data routing and distribution policy to the anchor gateway The event reporting policy, the updated QoS policy and the event reporting policy are sent to the PDSN; and the anchor gateway performs packet data routing distribution and event reporting; the PDSN performs bearer binding and event reporting.

5、如权利要求 1所述的方法，其中： 5. The method of claim 1 wherein:

所述锚点网关为家乡代理或本地移动锚点网关；所述移动 IP包括代理移动 IP版本 4、代理移动 IP版本 6、客户端移动 IP版本 4以及客户端移动 IP版本 6。 The anchor gateway is a home agent or a local mobility anchor gateway; the mobile IP includes a proxy mobile IP version 4, a proxy mobile IP version 6, a client mobile IP version 4, and a client mobile IP version 6.

6、一种策略与计费控制方法，包括: 当终端通过简单 IP 的方式接入 CDMA ***时，分组数据服务节点 ( PDSN )向策略和计费规则功能（ PCRF ) 实体发送 IP-CA 会话建立指示，以请求建立 IP连接接入网（IP-CAN )会话；以及 6. A policy and charging control method, including: When the terminal accesses the CDMA system through a simple IP, the Packet Data Serving Node (PDSN) sends an IP-CA session establishment indication to the Policy and Charging Rules Function (PCRF) entity to request the establishment of an IP connection access network (IP- CAN) session; and

所述 PCRF实体收到所述 IP-CAN会话建立指示后建立 IP-CAN会话，并向所述 PDSN下发计費策略。 The PCRF entity establishes an IP-CAN session after receiving the IP-CAN session establishment indication, and delivers a charging policy to the PDSN.

7、如权利要求 6所述的方法，其中，建立 IP-CAN会话的步骤之后，所述方法还包括：所述 PCRF实体向所述 PDSN下发数据路由分发策略、服务质量策略及事件上报策略。 The method of claim 6, wherein, after the step of establishing an IP-CAN session, the method further includes: the PCRF entity delivering a data routing distribution policy, a quality of service policy, and an event reporting policy to the PDSN .

8、一种策略与计费控制***，包括分组数据服务节点（PDSN ) 、锚点网关以及策略和计费规则功能（PCRF ) 实体；其中： 8. A policy and charging control system comprising a packet data serving node (PDSN), an anchor gateway, and a policy and charging rule function (PCRF) entity; wherein:

所述 PDSN设置为：当终端通过移动 IP的方式接入码分多址（ CDMA ) ***时，向所述 PCRF实体发起 IP连接接入网（IP-CAN )会话建立指示；所述锚点网关设置为：当终端通过移动 IP的方式接入 CDMA***时，向所述 PCRF实体发起 IP-CAN会话建立指示；所述 PCRF设置为：收到所述 IP-CAN会话建立指示后建立 IP-CAN会话，将建立的两个 IP-CAN会话关联，以及将所述两个 IP-CAN会话关联后向计费网元下发计費策略，其中，所述 PDSN或锚点网关为计费网元。 The PDSN is configured to: when the terminal accesses a code division multiple access (CDMA) system by using a mobile IP, initiate an IP connection access network (IP-CAN) session establishment indication to the PCRF entity; The method is configured to: initiate an IP-CAN session establishment indication to the PCRF entity when the terminal accesses the CDMA system by using a mobile IP; the PCRF is configured to: establish an IP-CAN after receiving the IP-CAN session establishment indication The session, the two IP-CAN sessions are associated, and the two IP-CAN sessions are associated and the charging policy is delivered to the charging network element, where the PDSN or the anchor gateway is a charging network element. .

9、如权利要求 8所述的***，其中：所述 PDSN是设置为按如下方式向所述 PCRF实体发起 IP-CAN会话建立指示： PDSN收到移动 IP注册请求、或者 IP控制协议协商请求或者 IPv6 控制协议协商请求后，向所述 PCRF实体发起第二 IP-CAN会话建立指示，其中携带用户标识，或携带用户标识及分组数据网的标识，或携带用户标识、分组数据网的标识及用户终端的 IP地址；所述锚点网关是设置为按如下方式向所述 PCRF实体发起 IP-CAN会话建立指示：锚点网关收到移动 IP注册请求、或者代理移动 IP注册请求、或者绑定更新、或者代理绑定更新后，向所述 PCRF实体发起第一 IP-CAN会话建立指示，其中携带用户标识、分组数据网的标识及终端的 IP地址；所述 PCRF是设置为按如下方式建立 IP-CAN会话：所述 PCRF实体收到第一 IP-CAN 会话建立指示后建立第一 IP-CAN 会话，以及收到第二 IP-CAN会话建立指示后建立第二 IP-CAN会话；所述 PCRF实体是设置为按如下方式将建立的两个 IP-CAN会话关联：若所述第二 IP-CAN会话建立指示仅携带用户标识，所述 PCRF实体将携带了相同的用户标识的第一 IP-CAN会话与第二 IP-CAN会话关联，若所述第二 IP-CAN会话建立指示携带了用户标识及分组数据网标识，所述 PCRF实体将携带了相同的用户标识及分组数据网标识的第一 IP-CAN会话与第二 IP-CAN会话关联，若所述第二 IP-CAN会话建立指示携带了用户标识、分组数据网标识及终端 IP地址，所述 PCRF实体将携带了相同用户标识、分组数据网标识及终端 IP地址的第一 IP-CAN会话与第二 IP-CAN会话关联。 9. The system of claim 8, wherein: the PDSN is configured to initiate an IP-CAN session establishment indication to the PCRF entity as follows: the PDSN receives a Mobile IP registration request, or an IP Control Protocol negotiation request or After the IPv6 control protocol negotiates the request, the second IP-CAN session establishment indication is initiated to the PCRF entity, where the user identifier is carried, or the user identifier and the identifier of the packet data network are carried, or the user identifier, the identifier of the packet data network, and the user are carried. IP address of the terminal; the anchor gateway is configured to initiate an IP-CAN session to the PCRF entity as follows Establishing an indication: after receiving the mobile IP registration request, or the proxy mobile IP registration request, or the binding update, or the proxy binding update, the anchor gateway initiates a first IP-CAN session establishment indication to the PCRF entity, where the user is carried The identifier, the identifier of the packet data network, and the IP address of the terminal; the PCRF is configured to establish an IP-CAN session as follows: the PCRF entity establishes a first IP-CAN session establishment indication to establish a first IP-CAN session And establishing a second IP-CAN session after receiving the second IP-CAN session establishment indication; the PCRF entity is configured to associate two IP-CAN sessions to be established as follows: if the second IP-CAN The session establishment indication carries only the user identifier, and the PCRF entity associates the first IP-CAN session carrying the same user identifier with the second IP-CAN session, if the second IP-CAN session establishment indication carries the user identifier And the packet data network identifier, the PCRF entity associates the first IP-CAN session carrying the same user identifier and the packet data network identifier with the second IP-CAN session, if the second IP-CAN session establishment indication Carrying the user identifier, the packet data network identifier, and the terminal IP address, the PCRF entity associates the first IP-CAN session carrying the same user identifier, the packet data network identifier, and the terminal IP address with the second IP-CAN session.

10、如权利要求 9所述的***，其中：当 PDSN 和锚点网关之间支持反向隧道时，所述终端的接入方式为 CMIPv4-支持反向隧道、或者 PMIPv4、或者 CMIPv6或者 PMIPv6; 当 PDSN 和锚点网关之间不支持反向隧道时 , 所述终端的接入方式为 CMIPv4-不支持反向隧道；所述第二 IP-CAN会话建立指示或第一 IP-CAN会话建立指示还携带所述终端的接入方式；所述 PCRF实体还设置为：根据所述终端的接入方式判定计费网元为锚点网关还是 PDSN, 当接入方式为 CMIPv4-支持反向隧道、或者 PMIPv4、或者 CMIPv6或者 PMIPv6时，所述计费网元为锚点网关， PCRF实体向锚点网关下发计费策略，当接入方式为 CMEV4-不支持反向隧道时，所述计费网元为 PDSN， PCRF实体向 PDSN下发计费策略。 10. The system according to claim 9, wherein: when a reverse tunnel is supported between the PDSN and the anchor gateway, the access mode of the terminal is CMIPv4-supporting reverse tunnel, or PMIPv4, or CMIPv6 or PMIPv6; When the reverse tunnel is not supported between the PDSN and the anchor gateway, the access mode of the terminal is CMIPv4 - the reverse tunnel is not supported; the second IP-CAN session establishment indication or the first IP-CAN session establishment indication And the PCRF entity is further configured to: determine, according to the access mode of the terminal, whether the charging network element is an anchor gateway or a PDSN, and when the access mode is CMIPv4-supporting a reverse tunnel, Or, when PMIPv4, or CMIPv6 or PMIPv6, the charging network element is an anchor gateway, and the PCRF entity sends an accounting policy to the anchor gateway. When the access mode is CMEV4, the reverse tunnel is not supported, the charging is performed. The network element is a PDSN, and the PCRF entity sends a charging policy to the PDSN.

11、如权利要求 8所述的***，其中: 所述 PCRF实体还设置为：向锚点网关下发数据路由分发策略与事件上报策略，向所述 PDSN下发更新后的服务质量策略与事件上报策略；所述锚点网关还设置为：分组数据路由分发与事件上报；以及所述 PDSN还设置为：承载绑定与事件上报。 11. The system of claim 8 wherein: The PCRF entity is further configured to: deliver a data routing distribution policy and an event reporting policy to the anchor gateway, and send an updated QoS policy and an event reporting policy to the PDSN; the anchor gateway is further configured as: Data routing distribution and event reporting; and the PDSN is further configured to: bearer binding and event reporting.

12、一种策略与计费控制***，包括分组数据服务节点（PDSN ) 及策略和计费规则功能（PCRF ) 实体；其中：所述 PDSN设置为：当终端通过简单 IP的方式接入 CDMA***时，向所述 PCRF实体发送建立 IP连接接入网（ IP-CAN )会话指示；所述 PCRF实体设置为：收到所述建立 IP连接接入网（IP-CAN )会话指示后，建立 IP-CAN会话，并向所述 PDSN下发计费策略。 12. A policy and charging control system, comprising a packet data serving node (PDSN) and a policy and charging rule function (PCRF) entity; wherein: the PDSN is set to: when the terminal accesses the CDMA system by means of simple IP And sending an establishment IP connection access network (IP-CAN) session indication to the PCRF entity; the PCRF entity is configured to: establish an IP after receiving the establishment of the IP connection access network (IP-CAN) session indication - A CAN session, and the charging policy is delivered to the PDSN.

13、一种计费规则决策（PCRF ) 实体，其包括：会话建立模块和下发模块，其中： 13. A charging rule decision (PCRF) entity, comprising: a session establishment module and a delivery module, wherein:

所述会话建立模块设置为：当终端通过移动 IP的方式接入码分多址（CDMA )***时，接收分组数据服务节点（ PDSN ) 向所述 PCRF实体发送的第二 IP连接接入网 The session establishing module is configured to: when the terminal accesses a code division multiple access (CDMA) system by using a mobile IP, receive a second IP connection access network sent by the packet data serving node (PDSN) to the PCRF entity.

( IP-CAN )会话建立指示，并建立第二 IP-CAN会话，以及接收锚点网关向所述 PCRF实体发送的第一 IP-CAN会话建立指示，并建立第一会话，将建立的两个 IP-CAN会话关联；或者，当终端通过筒单 IP的方式接入 CDMA***时，接收所述 PDSN向所述 PCRF实体请求建立 IP连接接入网（ IP-CAN )会话；所述下发模块设置为：向计费网元下发计费策略，其中，当终端通过移动 IP的方式接入码分多址（ CDMA )***时，所述 PD SN或锚点网关为计费网元，或者，当终端通过简单 IP的方式接入 CDMA***时，所述计费网关为所述 PDSN。 (IP-CAN) session establishment indication, and establishing a second IP-CAN session, and receiving a first IP-CAN session establishment indication sent by the anchor gateway to the PCRF entity, and establishing a first session, two to be established The IP-CAN session is associated; or, when the terminal accesses the CDMA system by means of the single IP, the receiving the PDSN requests the PCRF entity to establish an IP connection access network (IP-CAN) session; The method is as follows: sending a charging policy to the charging network element, where the PD SN or the anchor gateway is a charging network element when the terminal accesses the code division multiple access (CDMA) system by using a mobile IP, or When the terminal accesses the CDMA system by means of a simple IP, the charging gateway is the PDSN.

14、如权利要求 13所述的 PCRF实体，其中: 所述第二 IP-CAN会话建立指示携带用户标识，或携带用户标识及分组数据网的标识，或携带用户标识、分组数据网的标识及用户终端的 IP地址；所述第一 IP-CAN会话建立指示携带用户标识、分组数据网的标识及终端的 IP地址；所述会话建立模块是设置为按如下方式将建立的两个 IP-CAN会话关联：若所述第二 IP-CAN会话建立指示仅携带用户标识，所述会话建立模块将携带了相同的用户标识的第一 IP-CAN会话与第二 IP-CAN会话关联，若所述第二 IP-CAN会话建立指示携带了用户标识及分组数据网标识，所述会话建立模块将携带了相同的用户标识及分组数据网标识的第一 IP-CAN会话与第二 IP-CAN会话关联，若所述第二 IP-CAN会话建立指示携带了用户标识、分组数据网标识及终端 IP地址，所述会话建立模块将携带了相同用户标识、分组数据网标识及终端 IP地址的第一 IP-CAN会话与第二 IP-CAN会话关联。 14. The PCRF entity of claim 13 wherein: The second IP-CAN session establishment indication carries the user identifier, or carries the user identifier and the identifier of the packet data network, or carries the user identifier, the identifier of the packet data network, and the IP address of the user terminal; the first IP-CAN session Establishing an indication carrying a user identifier, an identifier of the packet data network, and an IP address of the terminal; the session establishing module is configured to associate two IP-CAN sessions to be established as follows: if the second IP-CAN session establishment indication Carrying only the user identifier, the session establishing module associates the first IP-CAN session carrying the same user identifier with the second IP-CAN session, if the second IP-CAN session establishment indication carries the user identifier and the grouping a data network identifier, the session establishing module associates a first IP-CAN session carrying the same user identifier and a packet data network identifier with a second IP-CAN session, if the second IP-CAN session establishment indication is carried User ID, packet data network identifier, and terminal IP address, the session establishment module will carry the first IP-CAN meeting with the same user identifier, packet data network identifier, and terminal IP address. Associated with the second IP-CAN session.

15、如权利要求 14所述的 PCRF实体，其中：当 PDSN 和锚点网关之间支持反向隧道时，所述终端的接入方式为The PCRF entity according to claim 14, wherein: when the reverse tunnel is supported between the PDSN and the anchor gateway, the access mode of the terminal is

CMIPv4-支持反向隧道、或者 PMIPv4、或者 CMIPv6或者 PMIPv6，当 PDSN 和锚点网关之间不支持反向隧道时，所述终端的接入方式为 CMIPv4-不支持反向隧道；所述第二 IP-CAN会话建立指示或第一 IP-CAN会话建立指示还携带所述终端的接入方式；所述下发模块还设置为：根据所述终端的接入方式判定计费网元为锚点网关还是 PDSN, 当接入方式为 CMIPv4-支持反向隧道、或者 PMIPv4、或者 CMIPv6或者 PMHV6时，所述计费网元为锚点网关， PCRF实体向锚点网关下发计费策略，当接入方式为 CMIPv4-不支持反向隧道时，所述计费网元为 PDSN， PCRF实体向 PDSN下发计费策略。 CMIPv4-supports reverse tunneling, or PMIPv4, or CMIPv6 or PMIPv6. When the reverse tunnel is not supported between the PDSN and the anchor gateway, the access mode of the terminal is CMIPv4-the reverse tunnel is not supported; The IP-CAN session establishment indication or the first IP-CAN session establishment indication further carries the access mode of the terminal; the sending module is further configured to: determine, according to the access mode of the terminal, that the charging network element is an anchor point The gateway is also a PDSN. When the access mode is CMIPv4-supporting reverse tunneling, or PMIPv4, or CMIPv6 or PMHV6, the charging network element is an anchor gateway, and the PCRF entity sends an accounting policy to the anchor gateway. When the inbound mode is CMIPv4 and the reverse tunnel is not supported, the charging network element is a PDSN, and the PCRF entity sends a charging policy to the PDSN.