WO2011035644A1 - 获取服务通用无线分组业务支持节点地址的方法及系统 - Google Patents

获取服务通用无线分组业务支持节点地址的方法及系统 Download PDF

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Publication number
WO2011035644A1
WO2011035644A1 PCT/CN2010/075354 CN2010075354W WO2011035644A1 WO 2011035644 A1 WO2011035644 A1 WO 2011035644A1 CN 2010075354 W CN2010075354 W CN 2010075354W WO 2011035644 A1 WO2011035644 A1 WO 2011035644A1
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Prior art keywords
sgsn
entity
change event
pcrf
event
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PCT/CN2010/075354
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English (en)
French (fr)
Inventor
周晓云
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US13/258,505 priority Critical patent/US8670400B2/en
Priority to EP10818338.5A priority patent/EP2472919B1/en
Publication of WO2011035644A1 publication Critical patent/WO2011035644A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1403—Architecture for metering, charging or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1403—Architecture for metering, charging or billing
    • H04L12/1407—Policy-and-charging control [PCC] architecture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/66—Policy and charging system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/80—Rating or billing plans; Tariff determination aspects
    • H04M15/8038—Roaming or handoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/20—Technology dependant metering
    • H04M2215/204—UMTS; GPRS

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and system for obtaining a Serving GRPS Support Node (SGSN) address.
  • SGSN Serving GRPS Support Node
  • the Evolved Packet System (EPS) of the 3rd Generation Partnership Project (3GPP) is evolved by Evolved Universal Terrestrial Radio Access Network (E-UTRAN), mobile management. Unit (Mobility Management Entity, MME), Serving Gateway (S-GW), Packet Data Network Gateway (P-GW), and Home Subscriber Server (HSS), as shown in Figure 1. Shown.
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • P-GW Packet Data Network Gateway
  • HSS Home Subscriber Server
  • the MME is responsible for control planes such as mobility management, non-access stratum signaling processing, and user mobility management context management;
  • the S-GW is an access gateway device connected to the E-UTRAN, in the E-UTRAN and The P-GW forwards data and is responsible for buffering the paging waiting data.
  • the P-GW is the border gateway of the EPS and Packet Data Network (PDN) network, which is responsible for PDN access and EPS and PDN. Transfer data and other functions.
  • the UE may also access the upgraded SGSN through the UTRAN, and the SGSN accesses the P-GW through the S-GW to perform packet service access. This upgraded SGSN is called the S4 SGSN. It interacts with the MME through the S3 interface and interacts with the S-GW through the S4 interface.
  • the Policy and Charging Rules Function (PCRF) entity performs policy and charging rules, it receives the interface Rx and the carrier.
  • An Application Function (AF) entity in the Internet Protocol (IP) service network is connected to obtain service information and is used to generate service information of the PCC policy.
  • AF Application Function
  • IP Internet Protocol
  • the P-GW resides in the Policy and Charging Enforcement Function (PCEF) entity, and between the PCRF entity and the P-GW.
  • Exchange information through the Gx interface responsible for initiating the establishment, modification, and release of bearers to ensure the quality of service data. Quality of Service (QoS for short), and charge control.
  • QoS Quality of Service
  • the S-GW hosts the Bearer Binding and Event Report Function (BBERF) entity. And the S-GW exchanges information with the PCRF entity through the Gxc interface, and the BBERF entity is responsible for initiating the establishment, modification, and release of the bearer to ensure the service quality of the service data, and the PCEF entity performs charging control.
  • BBERF Bearer Binding and Event Report Function
  • the EPS system supports online charging and offline charging for corresponding users.
  • the P-GW interacts with the Oline Charging System (OCS) through the Gy interface to perform credit control and management.
  • OCS Oline Charging System
  • the P-GW passes the Gz interface and the offline charging system (Offline Charging).
  • System, OFCS OFC Interact, report CDRs and other information.
  • the OCS will perform credit authorization for the service accessed by the user, and at the same time, issue a re-authorization trigger for the P-GW to re-request the credit. For example, when the serving UE's SGSN node changes, the P-GW must re-submit the credit to the OCS.
  • the same problem also exists with the EPS home routing roaming scenario shown in Figure 2 and the EPS local grooming roaming scenario as shown in Figure 3.
  • the P-GW is also unable to perceive the event that the SGSN has changed, which in turn leads to the P-GW. Unable to re-submit credit to OCS.
  • the technical problem to be solved by the present invention is to provide a method and system for acquiring an SGSN address, so that the P-GW can sense the change of the SGSN and re-request the credit to the OCS.
  • the present invention discloses a method for obtaining an SGSN address, including:
  • the PCEF entity provides an SGSN change event trigger to the PCR F entity
  • the PCRF entity After receiving the SGSN change event, the PCRF entity reports the SGSN change event and the new serving SGSN address to the PCEF entity.
  • the PCRF entity After the PCRF entity receives the SGSN change event trigger, the PCRF entity receives the SGSN change event trigger, and subscribes to the BBERF entity to subscribe to the SGSN change event trigger.
  • the BBERF entity installs the SGSN change event trigger, and when the BBERF entity detects the SGSN change event, reports the SGSN change event and the new service SGSN address to the PCRF entity;
  • the PCRF entity reports the received SGSN change event and the new serving SGSN address to the PCEF.
  • the PCEF entity is configured to provide the PCRF entity with the event report indication
  • the SGSN change event is triggered.
  • the event report indication includes an event trigger, and the value of the event trigger includes at least an SGSN change.
  • the PCRF entity reports the SGSN change event and the new service SGSN address to the PCEF entity through an event report indication.
  • the invention also discloses a system for acquiring an SGSN address, comprising a PCEF entity and a PCRF entity, wherein:
  • the PCEF entity is configured to: provide an SGSN change event trigger to the PCRF entity, and receive and save an SGSN change event and a new serving SGSN address reported by the PCRF; the PCRF entity is configured to: receive the SGSN change event Triggering, and reporting the SGSN change event and the new serving SGSN address to the PCEF entity.
  • the system further includes a BBERF entity, and the PCRF entity is further configured to: after receiving the SGSN change event trigger, subscribe the SGSN change event trigger to the BBERF entity, and receive the SGSN change event and the new service reported by the BBERF entity.
  • SGSN address ;
  • the BBERF entity is configured to: receive an SGSN change event trigger subscribed by the PCRF entity, install the SGSN change event trigger, and report the SGSN change event and the new service SGSN address when detecting that the service SGSN changes Give the PCRF entity.
  • the PCEF entity is configured to provide the SGSN change event trigger to the PCRF entity by using an event report indication.
  • the event report indication includes an event trigger, and the value of the event trigger includes at least an SGSN change.
  • the PCRF entity is configured to report the SGSN change event and the new serving SGSN address to the PCEF entity by the event report indication.
  • Figure 1 is an architectural diagram of an existing EPS non-roaming
  • FIG. 2 is an architectural diagram of an existing EPS home routing roaming scenario
  • Figure 3 shows the architecture of the existing EPS local grooming roaming scenario
  • Embodiment 4 is a flowchart of a non-roaming scenario in Embodiment 1;
  • FIG. 6 is a flowchart of a local grooming roaming scenario in Embodiment 3.
  • the main idea of the present invention is that the PCEF entity in the P-GW provides the SGSN change event trigger to the PCRF entity, and the PCRF entity triggered by the event can subscribe to the SGSN change event trigger to other network elements (such as the BBERF entity).
  • the element such as the BBERF entity
  • reports the SGSN change event trigger and the new service SGSN address ie, the service SGSN address after the SGSN_CHANGE event
  • a system for obtaining a GSGN address including a PCEF entity, a PCRF entity, and a BBERF entity. The functions of each part are described below.
  • the PCEF entity which resides in the P-GW, is mainly used to obtain an SGSN change trigger, and provides an SGSN change (SGSN_CHANGE) event trigger to the PCRF entity according to the acquired SGSN change trigger request, and is used for receiving and saving the PCRF entity report.
  • SGSN - CHANGE event and new service SGSN address ie SGSN - Service SGSN address after CHANGE event;
  • the SGSN change trigger obtained by the PCEF entity may be a Credit Re-Authorization trigger from the OCS or a PCEF entity self-configuration.
  • the PCEF entity provides an SGSN-CHANGE event trigger to the PCRF entity through an event report indication.
  • the PCRF entity is mainly used to receive the SGSN-CHANGE event triggered by the PCEF entity, and triggers the SGSN-CHANGE event triggering to the BBERF entity according to the event, and receives the SGSN_CHANGE event and the new service SGSN address reported by the BBERF entity.
  • the received SGSN_CHANGE event and the new serving SGSN address are sent to the PCEF entity;
  • the PCRF entity uses the event report indication to carry the SGSN_CHANGE event to be reported to the PCEF entity and the SGSN address of the new service;
  • the BBERF entity is configured to receive the event triggered by the PCRF entity and subscribe to the SGSN_CHANGE event, and detect the change of the service SGSN in real time, and report the SGSN_CHANGE event and the new service SGSN address to the PCRF entity if the SGSN of the service changes.
  • the PCRF entity when the PCRF entity receives the SGSN_CHANGE event provided by the PCEF entity, it may also subscribe to the SGSN-CHANGE event triggered by other network elements, and report the SGSN-CHANGE event and the new service SGSN reported by other network elements. The address is forwarded to the PCEF entity.
  • the following describes the specific process of obtaining the address of the general wireless packet service support node of the above-mentioned system through different EPS roaming architecture scenarios.
  • the non-roaming scenario is, for example, the process of acquiring the SGSN change event and the new service SGSN address (that is, the service SGSN address after the SGSN change) in the P-GW, as shown in FIG. 4, which includes the following steps.
  • Step S401 The PCEF entity in the P-GW receives the SGSN change trigger.
  • the PCEF entity may receive an SGSN change trigger through a process of re-authorization with the OCS, and the trigger may specifically be a credit re-authorization trigger.
  • the SGSN change trigger may also be configured locally in the PCEF entity.
  • Step S402 the PCEF sends a Diameter credit control request (Dimeter CCR, to the PCRF,
  • the Credit-Control-Request message the Diameter CCR message carries an event report indication, the event report indication includes an event trigger, and the value of the event trigger includes at least an SGSN change (SGSN_CHANGE) to provide an SGSN_CHANGE event trigger to the PCRF. ;
  • Step S403 the PCRF entity receives the Diameter CCR message, and saves the event report indication information therein, and returns a Diameter CCA (Credit-Control-Answer) message to the PCEF entity;
  • Diameter CCA Clear-Control-Answer
  • Step S404 the PCRF entity determines whether the event of the SGSN_CHANGE has been subscribed to the BBERF, and if yes, proceeds to step S406, otherwise the PCRF entity sends a Diameter RAR (Re-Auth-Request) message to the BBERF, and the Diameter RAR message is sent.
  • the event trigger is carried in, and the value of the event trigger includes at least SGSN_CHANGE, to trigger the event of the BBERF subscription SGSN_CHANGE, and proceeds to step S405;
  • Step S405 The BBERF entity receives the Diameter RAR message, and installs a subscribed event trigger according to the Diameter RAR message, and returns a Diameter RAA (Re-Auth- Answer) message to the PCRF entity.
  • Diameter RAA Re-Auth- Answer
  • Step S406 When the UE moves and causes the serving SGSN to change, the BBERF entity detects the SGSN_CHANGE event;
  • Step S407 The BBERF entity sends a Diameter CCR message to the PCRF, where the Diameter CCR message carries an event trigger and a new service SGSN address, where the value of the event trigger includes at least SGSN_CHANGE;
  • Step S408 The PCRF entity receives the Diameter CCR message, saves the event trigger and the new service SGSN address information, and returns a Diameter CCA to the BBERF entity.
  • Step S409 the PCRF sends a Diameter RAR message to the PCEF entity, where the Diameter RAR message is carried.
  • An event report indication wherein the event report indication carries an event trigger and a new service
  • the SGSN address where the value of the event trigger includes at least SGSN_CHANGE, to report the SGSN_CHANGE event and the new service SGSN address to the PCEF entity;
  • Step S410 The PCEF entity receives the Diameter RAR message, learns the SGSN_CHANGE event and the new serving SGSN address, and returns a Diameter RAA message to the PCRF entity.
  • This example uses the home routing roaming scenario as an example to describe the process of the PCEF entity acquiring the SGSN change event and the new service SGSN address in the P-GW.
  • the method includes the following steps: Step S501, PCEF in the P-GW The entity receives the SGSN change trigger;
  • the PCEF entity may receive an SGSN change trigger through a process of re-authorization with the OCS, and the trigger may specifically be a credit re-authorization trigger.
  • the SGSN change trigger may also be configured locally in the PCEF entity.
  • Step S502 The PCEF entity sends a Diameter CCR message to the home network PCRF (H-PCRF) entity, where the Diameter CCR message carries an event report indication, where the event report indication includes an event trigger, and the value of the event trigger includes at least the SGSN. – CHANGE, to provide the SGSN-CHANGE event trigger to the PCRF;
  • H-PCRF home network PCRF
  • Step S503 The H-PCRF entity receives the Diameter CCR message, saves the event report indication information therein, and returns a Diameter CCA message to the PCEF.
  • Step S504 The H-PCRF entity determines whether the BBERF subscription has been subscribed to.
  • the SGSN_CHANGE event is triggered, if yes, go to step S508, otherwise go to step S505; Step S505, the H-PCRF entity sends a Diameter RAR message to the BBERF through the visited network PCRF (V-PCRF) entity, and the Diameter RAR message carries the event trigger.
  • the value of the event trigger includes at least SGSN_CHANGE;
  • Step S506 the BBERF entity receives the Diameter RAR message, according to the Diameter
  • the RAR message installs a subscription event trigger, and returns a Diameter RAA message to the V-PCRF; step S507, the V-PCRF entity returns a Diameter RAA message to the H-PCRF entity; Step S508, when the UE moves and causes the SGSN of the service to change, the BBERF entity detects the SGSN_CHANGE event;
  • Step S509 the BBERF entity sends a Diameter CCR message to the V-PCRF, Diameter.
  • the CCR message carries an event trigger and a new service SGSN address, where the value of the event trigger includes at least SGSN_CHANGE;
  • Step S510 the V-PCRF entity sends a Diameter CCR message to the H-PCRF, and the Diameter
  • the CCR message carries an event trigger and a new service SGSN address, where the value of the event trigger includes at least SGSN_CHANGE;
  • Step S511 the H-PCRF entity receives the Diameter CCR message, saves the event trigger and the new service SGSN address information, and returns a Diameter CCA to the V-PCRF entity;
  • Step S512 the V-PCRF entity receives the Diameter CCA message and forwards it to the BBERF.
  • Step S513 The H-PCRF entity sends a Diameter RAR message to the PCEF, where the Diameter RAR message carries an event report indication, where the event report indication includes an event trigger and a new service SGSN address, where the value of the event trigger includes at least SGSN_CHANGE to report the SGSN_CHANGE event to the PCEF entity and the new service SGSN address;
  • Step S514 The PCEF entity receives the Diameter RA message, learns the SGSN CHANGE event and the new serving SGSN address, and returns a Diameter RAA message to the H-PCRF.
  • Step S601 The PCEF entity receives the SGSN. Change trigger
  • the PCEF entity may receive an SGSN change trigger through a process of re-authorization with the OCS, and the trigger may specifically be a credit re-authorization trigger.
  • the SGSN change trigger may also be configured locally in the PCEF entity.
  • Step S602 The PCEF entity sends a Diameter CCR message to the V-PCRF, where the Diameter CCR message carries an event report indication, where the event report indication includes an event trigger, and the value of the event trigger includes SGSN_CHANGE to the PCRF.
  • Step S603 the V-PCRF entity receives the Diameter CCR message, and saves the event report indication information therein, and returns a Diameter CCA message to the PCEF.
  • step S604 the V-PCRF entity determines whether the event triggering of the SGSN_CHANGE has been subscribed to the BBERF entity. If yes, the process proceeds to step S606, otherwise the V-PCRF sends a Diameter RAR message to the BBERF entity, where the Diameter RAR message carries an event trigger. And the value of the event trigger includes at least SGSN_CHANGE, and proceeds to step S605;
  • Step S605 The BBERF entity receives the Diameter RAR message, and installs the subscribed event trigger according to the Diameter RAR message, and returns a Diameter RAA message to the V-PCRF.
  • Step S606 When the UE moves and causes the service SGSN to change, the BBERF The entity detects the SGSN_CHANGE event;
  • Step S607 the BBERF entity sends a Diameter CCR message to the V-PCRF entity, where
  • the Diameter CCR message carries an event trigger and a new service SGSN address, where the value of the event trigger includes at least SGSN_CHANGE;
  • Step S608 the V-PCRF entity determines whether the H-PCRF entity subscribes to the SGSN_CHANGE event trigger. If the H-PCRF entity has not subscribed, the process proceeds to step S610. Otherwise, the V-PCRF sends a Diameter CCR message to the H-PCRF entity.
  • the Diameter CCR message carries an event trigger and a new service SGSN address, wherein the value of the event trigger includes at least SGSN_CHANGE, and proceeds to step S609;
  • Step S609 the H-PCRF entity receives the Diameter CCR message, saves the event trigger and the new service SGSN address information, and returns a Diameter CCA to the V-PCRF;
  • Step S610 the V-PCRF entity returns a Diameter CCA to the BBERF entity
  • Step S611 the V-PCRF entity sends a Diameter RAR message to the PCEF, where the Diameter
  • the RAR message carries an event report indication, where the event report indication includes an event trigger and a new service SGSN address, where the value of the event trigger includes at least SGSN_CHANGE to PCEF Report SGSN - CHANGE event and new service SGSN address;
  • Step S612 The PCEF entity receives the Diameter RAR message, learns the SGSN_CHANGE event and the new serving SGSN address, and returns a Diameter RAA message to the V-PCRF entity.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any particular combination of hardware and software.
  • the technical solution of the present invention solves the problem that credit control management cannot be performed according to the difference of the general wireless packet service support node when online charging is performed.

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Description

获取服务通用无线分组业务支持节点地址的方法及系统
技术领域
本发明涉及通信领域， 具体而言， 涉及一种获取服务通用无线分组业务 支持节点 （ Serving GRPS Support Node, SGSN )地址的方法及系统。 背景技术
第三代合作伙伴计划 （3rd Generation Partnership Project, 3GPP ) 的演进 的分组系统 （Evolved Packet System, EPS ) 由演进的通用地面无线接入网 ( Evolved Universal Terrestrial Radio Access Network, E-UTRAN )、 移动管理 单元 ( Mobility Management Entity, MME ) 、 服务网关 ( Serving Gateway, S-GW ) 、 分组数据网络网关（Packet Data Network Gateway, P-GW ) 、 归属 用户服务器（ Home Subscriber Server, HSS )组成， 如图 1所示。
其中， MME负责移动性管理、非接入层信令的处理和用户移动管理上下 文的管理等控制面的相关工作； S-GW是与 E-UTRAN相连的接入网关设备， 在 E-UTRAN和 P-GW之间转发数据， 并且负责对寻呼等待数据进行緩存； P-GW则是 EPS与分组数据网络（ Packet Data Network, PDN )网络的边界网 关， 负责 PDN的接入及在 EPS与 PDN间转发数据等功能。 UE也可以通过 UTRAN接入经过升级的 SGSN, SGSN在通过 S-GW连接 P-GW进行分组业 务的访问。这种经过升级的 SGSN称为 S4 SGSN。 它通过 S3接口与 MME进 行控制面的交互， 通过 S4接口与 S-GW进行用户面的交互。
若 EPS系统支持策略计费控制 （ Policy and Charging Control,PCC ) , 策 略和计费规则功能（Policy and Charging Rules Function, PCRF ) 实体进行策 略和计费规则的制定， 它通过接收接口 Rx 和运营商网络协议 ( Internet Protocol, IP )业务网络中的应用功能（ Application Function, AF ) 实体相连， 获取业务信息， 用于生成 PCC策略的业务信息。 当 S-GW与 P-GW之间的 S5接口釆用 GTP协议时， P-GW中驻留了策略和计费执行功能（Policy and Charging Enforcement Function, PCEF ) 实体， PCRF实体与 P-GW间通过 Gx 接口交换信息， 负责发起承载的建立， 修改和释放， 保证业务数据的服务质 量（Quality of Service, 简称为 QoS ) , 并进行计费控制。 当 S-GW与 P-GW 的 S5接口釆用代理移动 IP ( Proxy Mobile IP, PMIP )时， S-GW中驻留承载 绑定和事件报告功能（ Bearer Binding and Event Report Function, BBERF ) 实 体，并且 S-GW与 PCRF实体之间通过 Gxc接口交换信息， 由 BBERF实体负 责发起承载的建立， 修改和释放， 保证业务数据的服务质量， 由 PCEF 实体 进行计费控制。
EPS系统支持对应用户的在线计费和离线计费。对于在线计费， P-GW通 过 Gy接口与在线计费系统（ Oline Charging System, OCS ) 交互， 执行信用 控制和管理， 对于离线计费， P-GW通过 Gz接口与离线计费系统（Offline Charging System, OFCS ) 交互， 上报话单等信息。
对于在线计费来说， 在执行信用控制和管理的过程， 根据用户签约以及 运营商的策略， OCS会为用户访问的业务进行信用授权， 同时下发 P-GW重 新请求信用的重授权触发。例如，当服务 UE的 SGSN节点发生变化时， P-GW 必须重新向 OCS请求信用。
然后在图 1所示的架构中， 当 S-GW与 P-GW之间釆用 PMIP协议时，
SGSN发生改变的事件， P-GW无法感知到， 进而导致了 P-GW无法向 OCS 重新进行信用。
同样的问题同样存在与如图 2所示的 EPS家乡路由漫游场景和如图 3所 示的 EPS本地疏导漫游场景下， P-GW同样无法感知到 SGSN发生改变的事 件， 进而导致了 P-GW无法向 OCS重新进行信用。
发明内容
本发明所要解决的技术问题是，提供一种获取 SGSN地址的方法及系统， 使得 P-GW可以感知到 SGSN的变化， 并重新向 OCS请求信用。
为了解决上述问题， 本发明公开了， 一种获取 SGSN地址的方法， 包括：
PCEF实体向 PCR F实体提供 SGSN变化事件触发； 以及
所述 PCRF实体收到所述 SGSN变化事件触发后， 将 SGSN变化事件以 及新的服务 SGSN地址 ^艮告给所述 PCEF实体。 上述方法中，所述 PCRF实体收到所述 SGSN变化事件触发后，将 SGSN 所述 PCRF实体收到 SGSN变化事件触发后， 向 BBERF实体订阅 SGSN 变化事件触发；
所述 BBERF实体安装所述 SGSN变化事件触发， 当所述 BBERF实体检 测到所述 SGSN变化事件时， 向所述 PCRF实体报告所述 SGSN变化事件和 新的服务 SGSN地址； 以及
所述 PCRF实体将收到的 SGSN变化事件和新的服务 SGSN地址报告给 所述 PCEF。
其中， 所述 PCEF实体是通过事件报告指示向所述 PCRF实体提供所述
SGSN变化事件触发。
所述事件报告指示中包括事件触发器， 且该事件触发器的取值中至少包 含 SGSN变化。
所述 PCRF实体是通过事件报告指示将所述 SGSN变化事件以及新的服 务 SGSN地址上报给 PCEF实体。
本发明还公开了一种获取 SGSN地址的系统， 包括 PCEF实体和 PCRF 实体， 其中：
所述 PCEF实体设置为： 向所述 PCRF实体提供 SGSN变化事件触发， 以及接收并保存所述 PCRF报告的 SGSN变化事件和新的服务 SGSN地址； 所述 PCRF实体设置为： 接收所述 SGSN变化事件触发， 并将 SGSN变 化事件和新的服务 SGSN地址报告给所述 PCEF实体。
上述系统还包括 BBERF实体，所述 PCRF实体还设置为：接收所述 SGSN 变化事件触发后， 向所述 BBERF实体订阅 SGSN变化事件触发，并接收所述 BBERF实体报告的 SGSN变化事件和新的服务 SGSN地址；
所述 BBERF实体设置为：接收所述 PCRF实体订阅的 SGSN变化事件触 发， 安装所述 SGSN变化事件触发， 并在检测到服务 SGSN发生变化时， 将 所述 SGSN变化事件和新的服务 SGSN地址报告给所述 PCRF实体。 其中， 所述 PCEF实体是设置为通过事件报告指示向所述 PCRF实体提 供所述 SGSN变化事件触发。
所述事件报告指示中包括事件触发器， 且该事件触发器的取值中至少包 含 SGSN变化。
所述 PCRF实体是设置为通过所述事件报告指示将所述 SGSN变化事件 以及新的服务 SGSN地址 ^艮告给所述 PCEF实体。
本发明技术方案解决了在线计费时， 无法根据通用无线分组业务支持节 点的不同进行信用控制管理的问题。 附图概述
图 1为现有 EPS非漫游的架构图；
图 2为现有 EPS家乡路由漫游场景的架构图；
图 3为现有 EPS本地疏导漫游场景的架构；
图 4为实施例 1中非漫游场景下的流程图；
图 5为实施例 2中家乡路由漫游场景下的流程图；
图 6为实施例 3中本地疏导漫游场景下的流程图。
本发明的较佳实施方式
本发明的主要构思是， P-GW中的 PCEF实体向 PCRF实体提供 SGSN变 化事件触发，收到该事件触发的 PCRF实体可以向其他网元（如 BBERF实体 ) 订阅 SGSN变化事件触发， 当其他网元（如 BBERF实体 )检测到 SGSN变化 事件后，向 PCRF实体上报 SGSN变化事件触发以及新的服务 SGSN地址（即 SGSN— CHANGE事件后的服务 SGSN地址 ) , PCRF实体向 PCEF实体转发 该事件以及新的服务 SGSN地址。
以下结合附图及具体实施例对本发明技术方案作进一步详细说明。 一种获取 GSGN地址的系统， 包括 PCEF实体、 PCRF实体以及 BBERF 实体。 下面介绍各部分功能。
PCEF实体，驻留于 P-GW中， 主要用于获取 SGSN变化触发， 并根据所 获取的 SGSN变化触发请求向 PCRF实体提供 SGSN变化（ SGSN_CHANGE ) 事件触发，以及用于接收并保存 PCRF实体报告的 SGSN— CHANGE事件和新 的服务 SGSN地址（即 SGSN— CHANGE事件后的服务 SGSN地址 ) ；
其中， PCEF实体 所获取的 SGSN变化触发可能是来自于 OCS的信用重 授权触发（ Credit Re-Authorization trigger )或 PCEF实体自身配置， PCEF实 体通过事件报告指示来向 PCRF实体提供 SGSN— CHANGE事件触发。
PCRF实体，主要用于接收 PCEF实体提供的 SGSN— CHANGE事件触发， 并根据该事件触发向 BBERF实体订阅 SGSN— CHANGE事件触发， 以及接收 BBERF实体上报的 SGSN— CHANGE事件和新的服务 SGSN地址， 将接收的 SGSN— CHANGE事件和新的服务 SGSN地址发送给 PCEF实体；
其中， PCRF 实体用事件报告指示来携带所要上报给 PCEF 实体的 SGSN— CHANGE事件和新服务的 SGSN地址；
BBERF实体， 用于接收 PCRF实体发起的订阅 SGSN— CHANGE的事件 触发的请求，并实时检测服务 SGSN的变化，若服务的 SGSN变化时，向 PCRF 实体上报 SGSN— CHANGE事件以及新的服务 SGSN地址。
在其他实施例中， PCRF实体收到 PCEF实体提供的 SGSN— CHANGE事 件触发时，还可以向其他网元订阅 SGSN— CHANGE事件触发，并将其他网元 上报的 SGSN— CHANGE事件和新的服务 SGSN地址转发给 PCEF实体。
下面通过不同的 EPS漫游架构场景分别描述上述系统获取 Λ良务通用无线 分组业务支持节点地址的具体过程。
实施例 1
本实施例以非漫游场景为例如， 介绍 P-GW中 PCEF实体获取 SGSN变 化事件以及新的服务 SGSN地址（即 SGSN变化后的服务 SGSN地址 ) 的过 程， 具体如图 4所示， 包括如下步骤： 步骤 S401 , P-GW中 PCEF实体收到 SGSN变化触发；
该步骤中， PCEF实体可以通过与 OCS的重授权的过程， 接收 SGSN变 化触发， 该触发具体可以为信用重授权触发。
在其他实施例中， 也可以在 PCEF实体本地事先配置 SGSN变化触发。 步骤 S402, PCEF向 PCRF发送 Diameter信用控制请求（ Diameter CCR,
Credit-Control-Request)消息， Diameter CCR消息中携带事件报告指示， 该事 件报告指示中包括事件触发器， 且事件触发器的取值中至少包含 SGSN变化 ( SGSN_CHANGE ) , 以向 PCRF提供 SGSN_CHANGE事件触发；
步骤 S403 , PCRF实体接收上述 Diameter CCR消息， 并保存其中的事件 报告指示信息后，向 PCEF实体返回 Diameter信用控制应答（ Diameter CCA, Credit-Control- Answer)消息；
步骤 S404, PCRF实体判断是否已向 BBERF订阅 SGSN— CHANGE的事 件触发， 如果是， 进入步骤 S406, 否则 PCRF实体向 BBERF发送 Diameter 重授权请求（ Diameter RAR, Re-Auth-Request ) 消息， Diameter RAR消息中 携带事件触发器， 并且该事件触发器的取值中至少包含 SGSN— CHANGE, 以 向 BBERF订阅 SGSN— CHANGE的事件触发， 进入步骤 S405;
步骤 S405 , BBERF实体接收上述 Diameter RAR消息， 并根据 Diameter RAR 消息安装订阅的事件触发器， 向 PCRF 实体返回 Diameter RAA ( Re-Auth- Answer ) 消息；
步骤 S406, 当 UE发生移动， 并导致服务 SGSN变化时， BBERF实体检 测到 SGSN— CHANGE事件；
步骤 S407 , BBERF实体向 PCRF发送 Diameter CCR消息， 该 Diameter CCR消息中携带事件触发器和新的服务 SGSN地址， 其中， 事件触发器的取 值中至少包含 SGSN— CHANGE;
步骤 S408 , PCRF实体接收上述 Diameter CCR消息， 保存其中的事件触 发器以及新的服务 SGSN地址信息后， 向 BBERF实体返回 Diameter CCA; 步骤 S409, PCRF向 PCEF实体发送 Diameter RAR消息， Diameter RAR 消息中携带事件报告指示， 其中， 事件报告指示中携带事件触发器和新的服 务 SGSN地址， 其中， 事件触发器的取值中至少包含 SGSN— CHANGE, 以向 PCEF实体报告 SGSN— CHANGE事件以及新的服务 SGSN地址；
步骤 S410 , PCEF 实体接收上述 Diameter RAR 消息， 从中获知 SGSN— CHANGE事件以及新的服务 SGSN地址，并 PCRF实体向返回 Diameter RAA消息。
实施例 2
本实施例以家乡路由漫游场景为例，介绍 P-GW中 PCEF实体获取 SGSN 变化事件以及新的服务 SGSN地址的过程， 具体如图 5所示， 包括如下步骤： 步骤 S501 , P-GW中 PCEF实体收到 SGSN变化触发；
该步骤中， PCEF实体可以通过与 OCS的重授权的过程， 接收 SGSN变 化触发， 该触发具体可以为信用重授权触发。
在其他实施例中， 也可以在 PCEF实体本地事先配置 SGSN变化触发。 步骤 S502, PCEF实体向归属网络 PCRF ( H-PCRF ) 实体发送 Diameter CCR消息， Diameter CCR消息中携带事件报告指示， 该事件报告指示包括事 件触发器， 且该事件触发器的取值中至少包含 SGSN— CHANGE, 以向 PCRF 提供 SGSN— CHANGE事件触发；
步骤 S503 , H-PCRF实体接收上述 Diameter CCR消息， 保存其中的事件 报告指示信息后， 向 PCEF返回 Diameter CCA消息；
步骤 S504 , H-PCRF 实体判断是否已向拜访地 BBERF 订阅
SGSN— CHANGE的事件触发，如果是，进入步骤 S508,否则 进入步骤 S505; 步骤 S505, H-PCRF实体通过拜访网络 PCRF ( V-PCRF )实体向 BBERF 发送 Diameter RAR消息 , Diameter RAR消息中携带事件触发器 ,且事件触发 器的取值中至少包含 SGSN— CHANGE;
步骤 S506, BBERF实体接收上述 Diameter RAR消息， 根据该 Diameter
RAR消息安装订阅事件触发器 , 并向 V-PCRF返回 Diameter RAA消息； 步骤 S507, V-PCRF实体向 H-PCRF实体返回 Diameter RAA消息； 步骤 S508, 当 UE发生移动， 并导致服务的 SGSN变化时， BBERF实体 检测到 SGSN— CHANGE事件；
步骤 S509, BBERF实体向 V-PCRF发送 Diameter CCR消息， Diameter
CCR消息中携带事件触发器和新的服务 SGSN地址， 其中， 事件触发器的取 值中至少包含 SGSN— CHANGE;
步骤 S510, V-PCRF实体向 H-PCRF发送 Diameter CCR消息， Diameter
CCR消息中携带事件触发器和新的服务 SGSN地址， 其中， 事件触发器的取 值中至少包含 SGSN— CHANGE;
步骤 S511 , H-PCRF实体接收上述 Diameter CCR消息， 保存其中的事件 触发器和新的服务 SGSN地址信息后， 向 V-PCRF实体返回 Diameter CCA;
步骤 S512, V-PCRF实体接收上述 Diameter CCA消息， 并将其转发给 BBERF;
步骤 S513 , H-PCRF实体向 PCEF发送 Diameter RAR消息， Diameter RAR 消息中携带事件报告指示， 该事件报告指示中包括事件触发器和新的服务 SGSN地址，其中，事件触发器的取值中至少包含 SGSN_CHANGE ,以向 PCEF 实体报告 SGSN— CHANGE事件以及新的服务 SGSN地址；
步骤 S514 , PCEF 实体接收上述 Diameter RA 消息， 从中获知 SGSN CHANGE事件以及新的服务 SGSN地址， 并向 H-PCRF返回 Diameter RAA消息。
实施例 3
本实施例以本地疏导漫游场景为例，介绍 P-GW中 PCEF实体获取 SGSN 变化事件以及新的服务 SGSN地址的过程， 具体如图 6所示， 包括如下步骤： 步骤 S601 , PCEF实体收到 SGSN变化触发；
该步骤中， PCEF实体可以通过与 OCS的重授权的过程， 接收 SGSN变 化触发， 该触发具体可以为信用重授权触发。
在其他实施例中， 也可以在 PCEF实体本地事先配置 SGSN变化触发。 步骤 S602 , PCEF实体向 V-PCRF发送 Diameter CCR消息， Diameter CCR 消息中携带事件报告指示， 该事件报告指示中包括事件触发器， 且该事件触 发器的取值中包含 SGSN— CHANGE, 以向 PCRF提供 SGSN— CHANGE事件 触发；
步骤 S603 , V-PCRF实体接收上述 Diameter CCR消息， 并保存其中的事 件报告指示信息后， 向 PCEF返回 Diameter CCA消息；
步骤 S604, V-PCRF实体判断是否已向 BBERF实体订阅 SGSN— CHANGE 的事件触发， 如果是， 进入步骤 S606, 否则 V-PCRF 向 BBERF 实体发送 Diameter RAR消息 ,该 Diameter RAR消息中携带事件触发器 ,且事件触发器 的取值中至少包含 SGSN— CHANGE, 进入步骤 S605;
步骤 S605 , BBERF实体接收上述 Diameter RAR消息，并根据该 Diameter RAR消息安装订阅的事件触发器 , 并向 V-PCRF返回 Diameter RAA消息； 步骤 S606, 当 UE发生移动， 并导致服务 SGSN变化时， BBERF实体检 测到 SGSN— CHANGE事件；
步骤 S607, BBERF实体向 V-PCRF实体发送 Diameter CCR消息， 该
Diameter CCR消息中携带事件触发器和新的服务 SGSN地址， 其中， 事件触 发器的取值中至少包含 SGSN— CHANGE;
步骤 S608, V-PCRF实体判断 H-PCRF实体是否订阅过 SGSN— CHANGE 的事件触发，如果 H-PCRF实体没有订阅过，则进入步骤 S610,否则 V-PCRF 向 H-PCRF实体发送 Diameter CCR消息， 该 Diameter CCR消息中携带事件 触发器和新的服务 SGSN 地址， 其中， 事件触发器的取值中至少包含 SGSN— CHANGE, 进入步骤 S609;
步骤 S609, H-PCRF实体接收上述 Diameter CCR消息， 保存其中的事件 触发器和新的服务 SGSN地址信息后， 向 V-PCRF返回 Diameter CCA;
步骤 S610, V-PCRF实体向 BBERF实体返回 Diameter CCA;
步骤 S611 , V-PCRF实体向 PCEF发送 Diameter RAR消息， 该 Diameter
RAR消息中携带事件报告指示， 该事件报告指示中包括事件触发器和新的服 务 SGSN地址，该事件触发器的取值中至少包含 SGSN— CHANGE,以向 PCEF 报告 SGSN— CHANGE事件以及新的服务 SGSN地址；
步骤 S612 , PCEF 实体接收上述 Diameter RAR 消息， 从中获知 SGSN— CHANGE 事件以及新的服务 SGSN地址， 并向 V-PCRF 实体返回 Diameter RAA消息。
显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布 在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程 序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 或 者将它们分别制作成各个集成电路模块， 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样， 本发明不限制于任何特定的硬件和软 件结合。
以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精神和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。
工业实用性 本发明技术方案解决了在线计费时， 无法根据通用无线分组业务支持节 点的不同进行信用控制管理的问题。

Claims

权 利 要 求 书
1、 一种获取服务通用无线分组业务支持节点 （SGSN )地址的方法， 该方法包括：
策略和计费执行功能 （PCEF ) 实体向策略和计费规则功能（PCRF ) 实 体提供 SGSN变化事件触发； 以及
所述 PCRF实体收到所述 SGSN变化事件触发后， 将 SGSN变化事件以 及新的服务 SGSN地址 ^艮告给所述 PCEF实体。
2、 如权利要求 1所述的方法， 其中， 所述 PCRF实体收到所述 SGSN 变化事件触发后， 将 SGSN 变化事件以及新的服务 SGSN地址报告给所述 PCEF实体的步骤包括：
所述 PCRF 收到 SGSN 变化事件触发后， 向承载绑定和事件报告功能 ( BBERF ) 实体订阅 SGSN变化事件触发；
所述 BBERF实体安装所述 SGSN变化事件触发， 当所述 BBERF实体检 测到所述 SGSN变化事件时， 向所述 PCRF实体报告所述 SGSN变化事件和 新的服务 SGSN地址； 以及
所述 PCRF实体将收到的 SGSN变化事件和新的服务 SGSN地址报告给 所述 PCEF实体。
3、 如权利要求 1或 2所述的方法， 其中，
所述 PCEF实体是通过事件报告指示向所述 PCRF实体提供所述 SGSN 变化事件触发。
4、 如权利要求 3所述的方法， 其中，
所述事件报告指示中包括事件触发器， 且该事件触发器的取值中至少包 含 SGSN变化。
5、 如权利要求 1或 2所述的方法， 其中，
所述 PCRF实体是通过事件报告指示将所述 SGSN变化事件以及新的服 务 SGSN地址上报给 PCEF实体。
6、 一种获取服务通用无线分组业务支持节点 （SGSN )地址的系统， 该系统包括策略和计费执行功能（ PCEF )实体、策略和计费规则功能（ PCRF ) 实体；
所述 PCEF实体设置为： 向所述 PCRF实体提供 SGSN变化事件触发， 以及接收并保存所述 PCRF报告的 SGSN变化事件和新的服务 SGSN地址； 所述 PCRF实体设置为接收所述 SGSN变化事件触发， 并将 SGSN变化 事件和新的服务 SGSN地址报告给所述 PCEF实体。
7、 如权利要求 6 所述的系统， 该系统还包括承载绑定和事件报告功 能（BBERF ) 实体，
所述 PCRF 实体还设置为： 接收所述 SGSN 变化事件触发后， 向所述 BBERF订阅 SGSN变化事件触发， 并接收所述 BBERF报告的 SGSN变化事 件和新的服务 SGSN地址；
所述 BBERF实体设置为：接收所述 PCRF实体订阅的 SGSN变化事件触 发， 安装所述 SGSN变化事件触发， 并在检测到服务 SGSN发生变化时， 将 所述 SGSN变化事件和新的服务 SGSN地址报告给所述 PCRF实体。
8、 如权利要求 6或 7所述的系统， 其中，
所述 PCEF实体是设置为通过事件报告指示向所述 PCRF实体提供所述 SGSN变化事件触发。
9、 如权利要求 8所述的系统， 其中，
所述事件报告指示中包括事件触发器， 且该事件触发器的取值中至少包 含 SGSN变化。
10、 如权利要求 6或 7所述的系统， 其中，
所述 PCRF实体是设置为通过所述事件报告指示将所述 SGSN变化事件 以及新的服务 SGSN地址报告给所述 PCEF实体。
PCT/CN2010/075354 2009-09-24 2010-07-21 获取服务通用无线分组业务支持节点地址的方法及系统 WO2011035644A1 (zh)

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US8670400B2 (en) 2014-03-11
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EP2472919A1 (en) 2012-07-04
CN102036208A (zh) 2011-04-27
EP2472919A4 (en) 2014-01-08

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