WO2014176961A1 - 漫游计费实现方法及网络网元 - Google Patents

漫游计费实现方法及网络网元 Download PDF

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Publication number
WO2014176961A1
WO2014176961A1 PCT/CN2014/075052 CN2014075052W WO2014176961A1 WO 2014176961 A1 WO2014176961 A1 WO 2014176961A1 CN 2014075052 W CN2014075052 W CN 2014075052W WO 2014176961 A1 WO2014176961 A1 WO 2014176961A1
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WIPO (PCT)
Prior art keywords
network element
charging
information
visited
visited network
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PCT/CN2014/075052
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English (en)
French (fr)
Inventor
毕以峰
周晓云
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中兴通讯股份有限公司
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Publication of WO2014176961A1 publication Critical patent/WO2014176961A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • 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

Definitions

  • the embodiment of the invention relates to the field of communications, and relates to a method for implementing roaming charging and a network element. Background technique
  • the 3GPP (3rd Generation Partnership Project) EPS (Evolved Packet System) system supports interworking with fixed networks (this refers specifically to BBF networks, Broadband Forum networks, broadband forum networks). Strategy fusion technology.
  • a 3GPP UE or a fixed network terminal (referred to as a BBF network terminal) can be accessed from a fixed network line, and a QoS control policy and a charging policy of the line can be provided by an EPS network interworking (or merging) with it, such as Figure 1 shows.
  • the 3GPP network only shows network elements such as policy control, storage, and accounting.
  • the PCRF (Policy and Charging Rules Function) entity is the core of PCC (policy and charging control) and is responsible for policy decision and charging rules.
  • the PCRF provides network control rules based on service data flows, including traffic data flow detection, Gating Control, QoS (Quality of Service) control, and data flow based charging rules.
  • the PCRF sends its policy and charging rules to the PCEF for execution. At the same time, the PCRF also needs to ensure that these rules are consistent with the user's subscription information.
  • the roaming architecture is more common.
  • the hPCRF (home PCRF, home PCRF) of the home domain and the vPCRF (destination PCRF) of the visited domain are connected through the S9 interface. The policy is delivered from the hPCRF to the vPCRF.
  • the vPCRF is sent to the gateway IP-EDGE (IP Edge Gateway) that performs PCEF function in the BBF network through the Gxd interface.
  • SPR Subscriber Profile Repository
  • UDR User Data Repository
  • the PCRF needs to base the contract information obtained from SPR/UDR when formulating the policy.
  • the AF is an application function entity, and the PCRF formulates a corresponding PCC policy based on the data service information obtained from the AF (Application Function).
  • IP-EDGE IP-EDGE
  • AN Access network, access network
  • RG Residential Gateway
  • Home Resident Gateway BBF AAA (Authentication, Authorization, Accounting, Authentication and Authentication Server)
  • BNG Broadband Network Gateway, broadband network
  • a gateway control device or a BRAS Broadband Remote Access Server
  • BRAS Broadband Remote Access Server
  • IP-EDGE also has the function of collecting billing information.
  • the AN is a Layer 2 device responsible for data forwarding and routing.
  • RG is a home gateway and can have two working modes: routing mode and bridge mode.
  • the fixed network terminal is directly connected to the RG to access the fixed network.
  • the 3GPP terminal UE is generally connected to the AP under the RG through an WLAN (Wireless Local Access Network) antenna (Access Point, access point). ), then access to the fixed network.
  • the UE acquires a local address (UE local IP address) of the UE allocated by the fixed network.
  • the terminal UE communicates with the outside world by using the local IP address.
  • This part of the service data is called "NSWO (Non-Seamless WLAN Offload)" service data, and the service data is directly communicated from the IP-EDGE.
  • a fixed network terminal for example, a PC (Personal Computer) or a TV (TV) can be accessed through the RG and communicated externally via IP-EDGE.
  • This part of the service is called a fixed network terminal service.
  • the 3GPP terminal UE and the fixed network terminal service the PCC policy is sent to the IP-EDGE through the PCRF, and the IP-EDGE is used as the policy rule execution function PCEF, and the PCC policy is executed to ensure the QoS of the service. See step S201 - step S203 in Fig. 2.
  • Step S201 The 3GPP terminal UE or the fixed network terminal accesses from the fixed network, and obtains an IP address assigned by the IP-EDGE through access authentication.
  • Step S202 The IP-EDGE aware terminal (3GPP terminal UE or fixed network terminal) accesses, initiates a policy session Gxd session establishment on the Gxd interface to the PCRF, and the PCRF puts the corresponding PCC policy in the response message, including the QoS policy and the meter.
  • the fee rules are sent to IP-EDGE.
  • Step S203 If the TDF is deployed in the network, the PCRF actively initiates the establishment of the Sd session to the TDF.
  • the charging gateway and the charging system negotiate the corresponding parameters according to the charging mode of the network, and the charging system periodically obtains the credit limit and reports the charging information to the charging system.
  • the Internet Charging System performs any of the following steps based on different charging methods: Step 204: Initiating a session based on the TDF charging mode;
  • the charging function based on the TDF-based charging method collects the charging information in the TDF and TDF, and reports the charging information to the charging system (OCS) through the Gyt interface.
  • OCS charging system
  • the embodiment of the present invention does not consider the case of offline charging.
  • Step 205 Initiating a session based on an IP-EDGE charging mode
  • the charging function based on the IP-EDGE charging method is on IP-EDGE. Because the NSWO service of the 3GPP terminal UE or the service of the fixed network terminal is IP-EDGE routed, the IP-EDGE can collect the charging information and report the charging information to the charging system (OCS) through the Gyd charging interface.
  • OCS charging system
  • Step 206 Initiate a session based on the AAA charging mode.
  • the billing function is also on IP-EDGE.
  • the IP-EDGE charging method reports the charging information to the charging system through the BBF AAA and the 3GPP AAA, as shown in the "double-dot chain line" in Figure 1.
  • the above three charging methods are optionally deployed in the carrier network. That is, one carrier may deploy one of the charging methods, or deploy one or two of the above charging methods. A plurality of charging methods may be selected based on the subscription information of the terminal user.
  • Step 207 Perform charging according to the charging rule.
  • the PCRF can know the accounting mode of the current network according to the configuration information.
  • the PCRF can know what charging rule information is sent.
  • the 3GPP terminal UE roams from the home network-A to the visited network-B (the visited network is a network in which the EPS and the BBF are converged), and the visited network only supports the IP-EDGE-based charging method to collect charging information, while the home network Only AAA based charging is supported. This will have the following two problems:
  • the hPCRF of the home network defines the vPCRF that is sent to the visited network by the charging rule, and then downloaded to the IP-Edge.
  • the IP-Edge cannot use the charging rule.
  • IP-Edge of the visited network initiates the charging session on the Gyd interface, but cannot correctly establish a session with the charging system of the home network, or the charging system of the home network cannot recognize the charging information sent by IP-EDGE.
  • the technical problem to be solved by the embodiments of the present invention is to provide a method for implementing roaming charging and a network element to solve the problem that the user equipment cannot be correctly charged when roaming.
  • an embodiment of the present invention provides a roaming charging implementation method, where the method includes:
  • the visited network element After the user equipment (UE) accesses the visited network, the visited network element negotiates a charging mode with the home network element of the UE;
  • the visited network element receives the charging rule information corresponding to the negotiated charging mode sent by the home network element;
  • the visited network element collects charging information for the UE according to the charging rule information, and sends the collected charging information to the home network charging system.
  • the visited network element is a policy and charging rule function (PCRF) and an IP edge gateway (IP-EDGE) of the visited network
  • the home network element is a policy and charging rule function (PCRF) of the home network.
  • PCRF policy and charging rule function
  • IP-EDGE IP edge gateway
  • PCRF policy and charging rule function
  • the visited network element negotiates the charging mode with the home network element of the UE, and determines the negotiated charging mode according to the UE subscription information.
  • the step of negotiating the charging mode between the visited network element and the home network element of the UE includes: Sending a request to the home network element, where the visited network element carries information for indicating one or more charging modes supported by the visited network;
  • the home network element determines the negotiated charging mode according to the charging mode sent by the visiting network element and the charging mode supported by the network element.
  • the information is represented in an implicit manner.
  • the request carries information for indicating multiple charging modes supported by the visited network
  • the message further carries charging mode priority information
  • the home network element determines the negotiation by combining the priority information.
  • the session establishment fails or the session is successfully established, but the response message sent by the home network element to the visited network element has no charging rule.
  • the embodiment of the present invention further provides a network element, where the network element includes:
  • a negotiation unit configured to: when a user equipment (UE) accesses the visited network and the network element is a visited network element of the UE, negotiates a charging mode with the home network element of the UE; When accessing the visited network and the network element is the home network element of the UE, the visited network element of the UE negotiates the charging mode;
  • UE user equipment
  • the charging rule delivery unit is configured to: when the network element is the visited network element of the UE, receive the charging rule information corresponding to the negotiated charging mode sent by the home network element; the network element When it is the home network element of the UE, the charging rule information corresponding to the negotiated charging mode sent to the visited network element;
  • the charging information collecting unit is configured to: when the network element is the visited network element of the UE, collect charging information for the UE according to the charging rule information, and send the collected charging information result to the The home network charging system.
  • the network element is configured to: when the network element of the UE is visited, the negotiation unit determines the negotiated charging mode according to the UE subscription information.
  • the negotiating unit of the visited network element is further configured to: send a request to the home network element, where carrying information indicating one or more charging modes supported by the visited network;
  • the negotiation unit of the home network element is social masturbation: determining the negotiated charging mode according to the charging mode sent by the visiting network element and the charging mode supported by the network element.
  • the information is represented in an implicit manner.
  • the request carries information for indicating multiple charging modes supported by the visited network
  • the message further carries charging mode priority information
  • the negotiation unit of the home network element combines the priority
  • the information determines the billing method after negotiation.
  • the method for implementing the roaming charging and the network element negotiates the charging mode with the home network element of the UE by the visited network element, so that the visited network element can be compared according to the negotiated charging mode.
  • the fee rule information collects charging information for the UE, and solves the problem that the related user equipment cannot be correctly charged when roaming.
  • FIG. 1 is a schematic diagram of a network architecture according to the related art
  • FIG. 2 is a charging flow chart according to the prior art technique
  • FIG. 3 is a schematic diagram of an embodiment of a method for implementing roaming charging according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a preferred application example 2 of an embodiment of the present invention.
  • FIG. 6 is a flow chart of a preferred application example 3 of an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a module of an embodiment of a network element according to an embodiment of the present invention.
  • an embodiment of a method for implementing roaming charging according to an embodiment of the present invention includes:
  • Step 100 After the user equipment (UE) accesses the visited network, the visited network element negotiates a charging mode with the home network element of the UE.
  • the visited network element is a policy of the visited network and a charging rule function.
  • PCRF Policy and accounting rules function
  • IP-EDGE IP Edge Gateway
  • the visited network element negotiates the charging mode with the home network element of the UE, the negotiated charging mode needs to be determined in conjunction with the UE subscription information.
  • Step 200 After the negotiation succeeds, the visited network element receives the charging rule information corresponding to the negotiated charging mode sent by the home network element.
  • Step 300 The visited network element collects billing information for the UE according to the charging rule information, and sends the collected charging information to the home network charging system.
  • the home network element (PCRF) is used to determine the negotiated charging mode, which is convenient for the home network element to quickly specify the corresponding charging rule information.
  • PCRF home network element
  • the information about the charging mode supported by the home network or the information indicating the charging mode supported by the home network and the terminal subscription may be sent to the visited network element by the home network element, and the visited network element may be sent by the visited network.
  • the element determines the charging mode after the negotiation, and notifies the home network element by the negotiated charging mode, so that the home network element specifies the corresponding charging rule information.
  • FIG. 4 is a flow chart showing selection of a charging method according to a preferred embodiment of the present invention, the scenario based on which is a roaming scenario.
  • the process mainly includes the following steps:
  • Step S301 The 3GPP user equipment (the UE, also called the terminal or the fixed network terminal accesses from the fixed network, obtains the IP address assigned by the IP-EDGE through the access authentication;
  • Step S302a The IP-EDGE detects the access of the terminal, and initiates a policy session Gxd session establishment request on the Gxd interface to the vPCRF, and the vPCRF initiates a policy session S9 session request to the hPCRF through the S9 interface.
  • the request message carries an accounting method supported by the visited network and is sent to the hPCRF of the home network.
  • the charging method may be IP-EDGE filling in a Gxd message, and passing the vPCRF.
  • the vPCRF may also fill it into the S9 session message according to the local configuration information.
  • the charging method supported by the above-mentioned visited network may optionally consider the subscription information of the terminal.
  • the IP-EDGE can also carry the charging mode supported by the visited network and terminated by the terminal through a new message.
  • Step S302b The home network hPCRF determines the negotiated charging mode according to the charging mode sent by the visited network, and formulates the corresponding charging rule information, and sends the response message to the visited network through the S9 and the Gxd session.
  • the home network determines whether it supports the charging method of the visited network, in addition to the capabilities of the network, it may be necessary to consider the subscription information of the terminal. For example, for solicited mode TDF and corresponding TDF-based charging, user subscription information decisions are required. Therefore, when determining whether to accept the charging method sent by the visited network, the hPCRF should consider the subscription information of the terminal. If the home network does not support the charging mode of the visited network, the hPCRF responds to the S9/Gxd session establishment failure, or even if the session is successful, there is no charging rule information in the response message.
  • the home network hPCRF also delivers customized charging rule information to the visited network through the newly added message.
  • Step S303 the same step S203;
  • step S301 to step S303 are implemented.
  • the visited network element After the user equipment (UE) accesses the visited network, the visited network element negotiates with the home network element of the UE to negotiate the charging mode. After the negotiation succeeds, the visited network element receives the hometown. The charging rule information corresponding to the negotiated charging mode sent by the network element.
  • Step S304 and step S306 are three-choice or none of the steps are performed (if the billing method negotiation is unsuccessful).
  • Step S304 If the charging mode negotiated in step S302 is TTF-based charging, step S303 is performed, and the vPCRF notifies the TDF negotiation that the charging mode is based on TDF: TDF Initiation and Charging System OCS Conversation.
  • Step S305 If the negotiation method after the step S302 is negotiated based on the IP-EDGE meter Fee, then IP-EDGE is based on the Gyd interface to initiate an IP-EDGE based charging session to the home network's billing system.
  • Step S306 If the charging mode negotiated in step S302 is based on AAA charging, then the IP-EDGE initiates a charging session on the B interface by the BBF AAA, and the BBF AAA passes the 3GPP AAA of the visited network, and the 3GPP of the home network. AAA, a billing-based session initiated by the billing system of the home network.
  • Step S307 Perform charging according to the negotiated charging mode, and the BBF network periodically reports the charging information to the charging system of the home network.
  • steps S304 to S307 are implemented: the visited network element collects charging information for the UE according to the charging rule information, and sends the collected charging information to the home network charging system.
  • the application example 2 mainly involves the negotiation of the charging mode between the network element and the home network element of the UE. After the negotiation is successful, the visited network element receives the charging rule information corresponding to the negotiated charging mode sent by the home network element.
  • step S402a (corresponding to step S302a), the IP-EDGE or vPCRF of the visited network will be visited. Multiple charging methods that the network may support are sent to the hPCRF at the same time. The hPCRF selects the charging mode supported by the local network, that is, determines the charging mode after negotiation, and sends corresponding charging rule information to the visited network.
  • the IP-EDGE or vPCRF of the visited network simultaneously sends the multiple charging modes supported by the visited network to the hPCRF, and the priority of the corresponding mode can also be sent to the home network, and the home network also supports multiple types at the same time.
  • the charging mode the charging mode with higher priority is selected, and the charging rule is determined accordingly.
  • the home network determines whether to support the charging mode of the visited network, in addition to the capabilities of the network, it may be necessary to consider the subscription information of the terminal. For example, for solicited (requested) Mode TDF and corresponding TDF-based billing require user subscription information decisions. Therefore, when determining whether to accept the charging method sent by the visited network, the hPCRF should consider the subscription information of the terminal.
  • the application example 3 mainly involves the negotiation of the charging mode between the visited network element and the home network element of the UE. After the negotiation is successful, the visited network element receives the charging rule information corresponding to the negotiated charging mode sent by the home network element.
  • step S502a (corresponding to step S302a), the visited network supports three charging modes.
  • the three types of charging methods are supported by the visited network and the UEs are all contracted.
  • the IP-EDGE or vPCRF does not carry any charging mode information in the session request sent to the hPCRF, that is, it is carried in an implicit manner to indicate the visited network.
  • the supported charging mode or the information of the charging mode supported by the network and subscribed by the UE, the hPCRF selects the charging mode supported by the network, that is, determines the charging mode after the negotiation, and sends the corresponding charging rule information to the Visit the network.
  • the home network determines whether it supports the charging method of the visited network, in addition to the capabilities of the network, it may be necessary to consider the subscription information of the terminal. For example, for solicited mode TDF and corresponding TDF-based charging, user subscription information decisions are required. Therefore, when determining whether to accept the charging method sent by the visited network, the hPCRF should consider the subscription information of the terminal.
  • the embodiment of the present invention further provides a network element.
  • the network element includes:
  • a negotiation unit configured to: when a user equipment (UE) accesses the visited network and the network element is a visited network element of the UE, negotiates a charging mode with the home network element of the UE; When accessing the visited network and the network element is the home network element of the UE, the visited network element of the UE negotiates the charging mode;
  • UE user equipment
  • the charging rule delivery unit is configured to: when the network element is the visited network element of the UE, Receiving the charging rule information corresponding to the negotiated charging mode sent by the home network element; when the network element is the home network element of the UE, the negotiated charging method sent to the visited network element Corresponding charging rule information;
  • the charging information collecting unit is configured to: when the network element is the visited network element of the UE, collect charging information for the UE according to the charging rule information, and send the collected charging information result to the The home network charging system.
  • the network element is configured to: when the network element of the UE is visited, the negotiation unit determines the negotiated charging mode according to the UE subscription information.
  • the negotiating unit of the visited network element is further configured to: send a request to the home network element, where the information for indicating one or more charging modes supported by the visited network is carried;
  • the negotiating unit of the home network element is configured to: determine the negotiated charging mode according to the charging mode sent by the visiting network element and the charging mode supported by the network element.
  • the information is represented in an implicit manner.
  • the request carries information for indicating multiple charging modes supported by the visited network
  • the message further carries charging mode priority information
  • the negotiation unit of the home network element combines the priority
  • the information determines the billing method after negotiation.
  • the method for implementing the roaming charging and the network element negotiates the charging mode with the home network element of the UE by the visited network element, so that the visited network element can be compared according to the negotiated charging mode.
  • the fee rule information collects charging information for the UE, and solves the problem that the related user equipment cannot be correctly charged when roaming.
  • modules or steps of the embodiments of the present invention may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed across 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 and, in some cases, may be different.
  • the steps shown or described herein are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the embodiments of the present invention are not limited to any What specific hardware and software are combined.
  • the embodiment of the invention may be modified or changed by one or more embodiments. Any modifications, equivalent substitutions, improvements, etc. within the spirit and scope of the embodiments of the present invention are intended to be included within the scope of the present invention.
  • the home network element of the UE negotiates the charging mode, so that the visited network element can collect charging information for the UE according to the charging rule information corresponding to the agreed charging mode, and the related user equipment cannot be correctly roamed when roaming. Billing issue.

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Abstract

本发明实施例涉及一种漫游计费实现方法及网络网元，该方法包括：用户设备（UE）接入拜访网络后，所述拜访网络网元与所述UE的家乡网络网元协商计费方式；协商成功后，所述拜访网络网元接收所述家乡网络网元发送的协商后的计费方式对应的计费规则信息；所述拜访网络网元根据所述计费规则信息针对所述UE收集计费信息，并将收集的计费信息发送给所述家乡网络计费系统。漫游计费实现方法及网络网元可以解决用户设备漫游时无法正确计费的问题。

Description

漫游计费实现方法及网络网元
技术领域
本发明实施例涉及通信领域， 涉及一种漫游计费实现方法及网络网元。 背景技术
3GPP ( 3rd Generation Partnership Project, 第三代合作伙伴计划） 的 EPS ( Evolved Packet System, 演进的分组系统） 系统支持与固定网络（此特指 BBF网络， Broadband Forum network, 宽带论坛网络） 的互联互通和策略融 合技术。 根据相关技术的， 3GPP UE或者固定网络终端 (此特指 BBF网络终 端）可以从固定网络线路接入， 线路的 QoS控制策略和计费策略可以由与其 互通（或者融合） 的 EPS网络提供， 如图 1所示。 在图 1所示的网络架构图 中， 3GPP网络仅仅示出了策略控制、存储、计费等网络单元。其中 PCRF( Policy and Charging Rules Function, 策略和计费规则功能） 实体是 PCC(policy and charging control, 策略和计费控制）的核心， 负责策略决策和计费规则的制定。 PCRF提供了基于业务数据流的网络控制规则，这些网络控制包括业务数据流 的检测、 门控（ Gating Control ) 、 QoS ( Quality of Service, 服务质量）控制 以及基于数据流的计费规则等。 PCRF 将其制定的策略和计费规则发送给 PCEF执行， 同时， PCRF还需要保证这些规则和用户的签约信息一致。 架构 1 中所示的是漫游架构， 更具有普遍性， 家乡域的 hPCRF ( home PCRF, 家 乡 PCRF )和拜访域的 vPCRF ( visited PCRF, 拜访 PCRF )通过 S9接口联通， 策略由 hPCRF下发到 vPCRF,再由 vPCRF通过 Gxd接口下发到 BBF网络中 执行 PCEF功能的网关 IP-EDGE ( IP 边缘网关） 。 SPR ( Subscriber Profile Repository, 签约信息存储器）或 UDR ( User Data Repository , 用户数据存 储器） 为用户签约信息存储网元， PCRF 在制定策略的时候需要基于从 SPR/UDR 处获取的签约信息。 AF 为应用功能实体， PCRF 根据从 AF ( Application Function , 应用功能） 处获取的数据业务信息为其制定对应的 PCC策略。
固定网络中有 IP-EDGE, AN ( Access network,接入网）， RG ( Residential Gateway,家庭驻地网关 ), BBF AAA( Authentication, Authorization, Accounting, 鉴权授权认证服务器）等网元组成， 其中 IP-EDGE是固定网络的网关， 网络 中又称为 BNG ( Broadband Network Gateway, 宽带网络网关控制设备 )或者 BRAS ( Broadband Remote Access Server, 宽带远程接入服务器） ， 其作为策 略执行网元， 执行 PCEF的功能， 接收来自 PCRF的 PCC策略用于执行该策 略。 同时， IP-EDGE还具有收集计费信息的功能。 AN是一个二层设备， 负 责数据的转发和路由。 RG是家庭网关，可以有路由模式和桥接模式两种工作 模式。 固定网络终端一般直接接入 RG,从而接入到固定网络； 3GPP终端 UE 一般通过 WLAN ( Wireless Local Access Network, 无线局域接入网 )天线接 入到 RG下的 AP ( Access Point, 接入点） ， 再接入到固定网络。 当 3GPP 终端 UE通过 WLAN接入后 , UE获取固定网络为其分配的 UE的本地地址 ( UE local IP address ) 。 终端 UE用该本地 IP地址与外界通信， 这部分业务 数据称为 "NSWO ( Non-Seamless WLAN Offload, 非无缝 WLAN分流） " 业 务数据， 该类业务数据直接从 IP-EDGE对外通信。 固定网络终端（比如， PC ( Personal Computer,个人电脑 )或者网络 TV ( Television, 电视机）等）可以 通过 RG接入， 并通过 IP-EDGE对外通信， 这部分业务称之为固定网络终端 业务。 3GPP终端 UE和固定网络终端业务， 经过 PCRF下发 PCC策略到 IP-EDGE, IP-EDGE作为策略规则执行功能 PCEF, 执行 PCC策略， 保证业 务的 QoS。 参见图 2中的步骤 S201-步骤 S203。
步骤 S201： 3GPP终端 UE或者固定网络终端从固定网络接入，通过接入 认证 , 获取 IP-EDGE为其分配的 IP地址；
步骤 S202: IP-EDGE感知终端 （ 3GPP终端 UE或者固定网络终端 ) 的 接入， 向 PCRF发起 Gxd接口上的策略会话 Gxd会话建立， PCRF在回应消 息中把对应的 PCC策略， 包括 QoS策略和计费规则下发给 IP-EDGE。
步骤 S203: 如果网络中部署了 TDF, PCRF会主动向 TDF发起 Sd会话 的建立。
当终端完成接入到网络后， 根据网络的计费方式， 计费网关和计费系统 会协商对应的参数， 并定时的到计费系统获取信用额度和向计费系统上报计 费信息。 当前网络中运行业务的计费， 有三种计费方式（这里只举例在线计 费系统（OCS, Online Charging System ) , 基于不同的计费方式执行以下步骤 中任一步骤： 步骤 204: 基于 TDF计费方式的计费发起会话；
基于 TDF的计费方式的计费功能在 TDF, TDF搜集计费信息， 通过 Gyt 接口把计费信息上报给计费系统（OCS ) , 如图 1 中的 "划线" 所示为 Gyt 接口。
本发明实施例对离线计费的情形不予考虑。
步骤 205: 基于 IP-EDGE计费方式的计费发起会话；
基于 IP-EDGE计费方式的计费功能在 IP-EDGE。因为无论 3GPP终端 UE 的 NSWO 业务还是固定网络终端的业务， 都经过 IP-EDGE路由， 所以 IP-EDGE可以搜集计费信息， 通过 Gyd计费接口把计费信息上报给计费系统 ( OCS ) , 如图 1中的 "点划线" 所示为 Gyd接口 。
步骤 206: 基于 AAA计费方式的计费发起会话。
计费功能也在 IP-EDGE。 IP-EDGE计费方式把计费信息通过 BBF AAA, 3GPP AAA上报给计费系统， 如图 1中的 "双点划线" 所示计费信息的上报 路径。
以上三种计费方式在运营商网络中是可选地部署的， 也就是说一种运营 商可能部署其中一种计费方式， 或者部署以上的一种或者两种计费方式， 如 果部署了多种计费方式， 可能基于终端用户的签约信息进行选择一种计费方 式。
步骤 207: 根据计费规则执行计费。
鉴于计费方式的不同， 需要使用不同的计费规则 （ Charging Rule ) 的， 而计费规则是通过 PCRF制定并下发的。如果非漫游场景下， EPS网络和 BBF 网络的属于同一运营商， 因此 PCRF才艮据配置信息， 能够获知当前网络是部 署的什么计费方式， PCRF能知道该下发什么样的计费规则信息。 然而， 如果 是漫游场景下， 可能会存在问题。举例来说， 3GPP终端 UE从家乡网络 -A漫 游到拜访网络 -B (拜访网络是 EPS和 BBF融合的网络， )拜访网络只支持基 于 IP-EDGE的计费方式收集计费信息，而家乡网络只支持基于 AAA的计费。 这样就会存在以下两个问题：
家乡网络的 hPCRF制定了计费规则下发给拜访网络的 vPCRF,再下载到 IP-Edge , IP-Edge无法使用该计费规则；
拜访网络的 IP-Edge发起 Gyd接口上的计费会话， 但是无法跟家乡网络 的计费系统正确建立会话， 或者家乡网络的计费系统无法认知 IP-EDGE发送 来的计费信息。
以上问题简单概括为： 家乡网络和拜访网络的计费方式不同， 导致计费 会话无法建立成功， 计费规则无法正确执行， 计费信息无法正确上报。 发明内容
本发明实施例要解决的技术问题是提供一种漫游计费实现方法及网络网 元， 以解决用户设备漫游时无法正确计费的问题。
为解决上述技术问题， 本发明实施例提供了以一种漫游计费实现方法， 该方法包括：
用户设备（UE )接入拜访网络后， 所述拜访网络网元与所述 UE的家乡 网络网元协商计费方式；
协商成功后， 所述拜访网络网元接收所述家乡网络网元发送的协商后的 计费方式对应的计费规则信息；
所述拜访网络网元根据所述计费规则信息针对所述 UE收集计费信息， 并将收集的计费信息发送给所述家乡网络计费系统。
优选地， 所述拜访网络网元为拜访网络的策略和计费规则功能（PCRF ) 和 IP边缘网关（ IP-EDGE ) , 家乡网络网元是家乡网络的策略和计费规则功 能 ( PCRF ) 。
优选地， 所述拜访网络网元与所述 UE的家乡网络网元协商计费方式时 结合所述 UE签约信息确定协商后的计费方式。
优选地， 所述拜访网络网元与所述 UE的家乡网络网元协商计费方式的 步骤包括： 所述拜访网络网元向所述家乡网络网元发送请求， 其中携带用于表明拜 访网络支持的其中一种或者多种计费方式的信息；
所述家乡网络网元根据拜访网络网元发送的计费方式以及其支持的计费 方式确定协商后的计费方式。
优选地， 所述信息釆用隐式的方式表示。
优选地 ,所述请求中携带用于表明拜访网络支持的多种计费方式的信息 , 所述消息中还携带计费方式优先级信息， 所述家乡网络网元结合所述优先级 信息确定协商后的计费方式。
优选地， 协商不成功时， 会话建立失败或会话建立成功， 但所述家乡网 络网元向所述拜访网络网元发送的回应消息中无计费规则。
为解决上述技术问题， 本发明实施例还提供了一种网络网元， 所述网元 包括：
协商单元， 设置为： 用户设备（UE )接入拜访网络后且该网络网元为所 述 UE的拜访网络网元时，与所述 UE的家乡网络网元协商计费方式； 用户设 备（ UE )接入拜访网络后且该网络网元为所述 UE的家乡网络网元时， 所述 UE的拜访网络网元协商计费方式；
计费规则传递单元， 设置为： 该网络网元为所述 UE的拜访网络网元时， 接收所述家乡网络网元发送的协商后的计费方式对应的计费规则信息； 该网 络网元为所述 UE的家乡网络网元时， 向拜访网络网元发送的协商后的计费 方式对应的计费规则信息；
计费信息收集单元， 设置为： 该网络网元为所述 UE的拜访网络网元时， 根据所述计费规则信息针对所述 UE收集计费信息， 并将收集的计费信息结 果发送给所述家乡网络计费系统。
优选地， 该网络网元设置为： 为所述 UE的拜访网络网元时， 所述协商 单元结合所述 UE签约信息确定协商后的计费方式。
优选地， 所述拜访网络网元的协商单元还设置为： 向所述家乡网络网元 发送请求， 其中携带用于表明拜访网络支持的其中一种或多种计费方式的信 息； 所述家乡网络网元的协商单元社会自慰： 根据拜访网络网元发送的计费 方式以及其支持的计费方式确定协商后的计费方式。
优选地， 所述信息釆用隐式的方式表示。
优选地 ,所述请求中携带用于表明拜访网络支持的多种计费方式的信息 , 所述消息中还携带计费方式优先级信息， 所述家乡网络网元的协商单元结合 所述优先级信息确定协商后的计费方式。
本发明实施例漫游计费实现方法及网络网元通过拜访网络网元与所述 UE的家乡网络网元协商计费方式，使得拜访网络网元可根据所述协商一致的 计费方式对应的计费规则信息针对所述 UE收集计费信息， 解决了相关用户 设备漫游时无法正确计费的问题。
附图概述
附图用来提供对本发明实施例的进一步理解， 构成本申请的一部分， 本 发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明实施例的 不当限定。 在附图中：
图 1是根据相关技术的网络架构示意图；
图 2是根据先关技术的计费流程图；
图 3为本发明实施例漫游计费实现方法实施例的示意图；
图 4是本发明实施例优选应用实例一流程图；
图 5是本发明实施例优选应用实例二流程图；
图 6是本发明实施例优选应用实例三流程图；
图 7是本发明实施例网络网元实施例的模块结构示意图。
本发明的较佳实施方式
如图 3所示， 本发明实施例漫游计费实现方法实施例包括：
步骤 100： 用户设备 ( UE )接入拜访网络后， 所述拜访网络网元与所述 UE的家乡网络网元协商计费方式； 本发明实施例中， 所述拜访网络网元为拜访网络的策略和计费规则功能
( PCRF )和 IP边缘网关（ IP-EDGE ) , 家乡网络网元是家乡网络的策略和计 费规则功能（PCRF ) 。
可理解地， 所述拜访网络网元与所述 UE的家乡网络网元协商计费方式 时需结合所述 UE签约信息确定协商后的计费方式。
步骤 200: 协商成功后， 所述拜访网络网元接收所述家乡网络网元发送 的协商后的计费方式对应的计费规则信息；
步骤 300:所述拜访网络网元根据所述计费规则信息针对所述 UE收集计 费信息， 并将收集的计费信息发送给所述家乡网络计费系统。
以上实施例是由家乡网络网元（PCRF )来确定协商后的计费方式， 有利 于家乡网络网元快速指定对应的计费规则信息， 该实现方式是优选的。 可替 换地， 也可由家乡网络网元将用于表明家乡网络支持的计费方式的信息或用 于表明家乡网络支持且终端签约的计费方式的信息发送给拜访网络网元， 由 拜访网络网元确定协商后的计费方式， 再将协商后的计费方式通知家乡网络 网元， 从而由家乡网络网元指定对应的计费规则信息。
下文中将参考附图并结合应用实例来详细说明本发明实施例。 在不冲突 的情况下 , 本申请中的实施例及实施例中的特征可以相互组合。
应用实例一
图 4是根据本发明优选实施例一的计费方法的选择流程图， 该流程图基 于的场景是漫游场景。 该流程主要包括以下步骤：
步骤 S301： 3GPP用户设备 ( UE , 也称终端或者固定网络终端从固定网 络接入， 通过接入认证， 获取 IP-EDGE为其分配的 IP地址；
步骤 S302a: IP-EDGE感知终端的接入， 向 vPCRF发起 Gxd接口上的策 略会话 Gxd会话建立请求， vPCRF通过 S9接口向 hPCRF发起策略会话 S9 会话请求。
其中在请求消息中， 携带拜访网络支持的一种计费方式， 发送给家乡网 络的 hPCRF。其中，计费方式可以是 IP-EDGE填写到 Gxd消息， 经过 vPCRF 在发送给 hPCRF的， 也可以是 vPCRF根据本地配置信息将其填写到 S9会话 消息里的。
上述拜访网络支持的计费方式除了考虑拜访网络的能力外， 可选的需要 考虑终端的签约信息。
可替换地， IP-EDGE也可通过一条新增的消息携带所述拜访网络支持的 且终端签约的计费方式。
步骤 S302b: 家乡网络 hPCRF根据拜访网络发送的计费方式， 确定协商 后的计费方式， 制定对应的计费规则信息， 并通过 S9和 Gxd会话的应答消 息下发到拜访网络。
家乡网络在判断是否支持拜访网络的计费方式时， 除了根据本网络的能 力夕卜，还可能需要考虑终端的签约信息。例如，对于基于 solicited (请求式的） 模式 TDF 和对应的基于 TDF 的计费， 是需要用户签约信息决策的。 因此 hPCRF在判断是否接受拜访网络发送来的计费方式的时候， 应考虑终端的签 约信息。 如果家乡网络不支持拜访网络的计费方式， 那么将 hPCRF 回应 S9/Gxd会话建立失败， 或者是即使会话成功， 回应消息中无计费规则信息。
可替换地，所述家乡网络 hPCRF也通过新增的消息下发定制的计费规则 信息到拜访网络。
步骤 S303: 同步骤 S203;
该应用实例中， 步骤 S301至步骤 S303实现了： 用户设备（UE )接入拜 访网络后， 拜访网络网元与 UE的家乡网络网元协商计费方式， 协商成功后， 拜访网络网元接收家乡网络网元发送的协商后的计费方式对应的计费规则信 息。
步骤 S304和步骤 S306是三选一的或者是任何一个步骤都不执行的 （若 计费方法协商不成功） 。
步骤 S304: 如果在步骤 S302步协商后的计费方式是基于 TDF的计费， 则执行步骤 S303 , vPCRF将通告 TDF协商后的计费方式是基于 TDF的计费： TDF发起与计费系统 OCS的会话。
步骤 S305: 如果在步骤 S302步协商后的计费方式是基于 IP-EDGE的计 费，那么 IP-EDGE在 Gyd接口上向家乡网络的计费系统发起的基于 IP-EDGE 计费的会话。
步骤 S306: 如果在步骤 S302步协商后的计费方式是基于 AAA的计费， 那么 IP-EDGE在 B接口上 BBF AAA发起计费会话， BBF AAA再通过拜访网 络的 3GPP AAA, 家乡网络的 3GPP AAA, 向家乡网络的计费系统发起的基 于计费的会话。
另外：如果在 S302步计费方法协商失败，步骤 S304-S306可能都不执行。 步骤 S307: 根据协商好的计费方式， 执行计费， BBF网络定时上报计费 信息到家乡网络的计费系统。
在该应用实例中， 步骤 S304至 S307实现了： 拜访网络网元根据所述计 费规则信息针对所述 UE收集计费信息， 并将收集的计费信息发送给所述家 乡网络计费系统。
应用实例二
应用实例二主要涉及拜访网络网元与 UE的家乡网络网元协商计费方式， 协商成功后， 拜访网络网元接收家乡网络网元发送的协商后的计费方式对应 的计费规则信息。
图 5是根据本发明实施例优选应用实例二的流程图， 在该应用实例二与 应用实例一的唯一不同是： 在步骤 S402a (对应步骤 S302a )中， 拜访网络的 IP-EDGE或者 vPCRF将拜访网络可能支持的多种计费方式同时发给 hPCRF。 hPCRF根据选择本网支持的计费方式， 也即确定协商后的计费方式， 并制定 对应的计费规则信息发送给拜访网络；
优选的， 拜访网络的 IP-EDGE或者 vPCRF将拜访网络可能支持的多种 计费方式同时发给 hPCRF的同时，可以将对应模式的优先级也发给家乡网络， 家乡网络如果也同时支持多种计费方式， 则选择优先级高的计费方式， 并据 此制定计费规则。
家乡网络在判断是否支持拜访网络的计费方式时， 除了根据本网络的能 力夕卜，还可能需要考虑终端的签约信息。例如，对于基于 solicited (请求式的） 模式 TDF 和对应的基于 TDF 的计费， 是需要用户签约信息决策的。 因此 hPCRF在判断是否接受拜访网络发送来的计费方式的时候， 应考虑终端的签 约信息。
应用实例三
该应用实例三主要涉及拜访网络网元与 UE的家乡网络网元协商计费方 式， 协商成功后， 拜访网络网元接收家乡网络网元发送的协商后的计费方式 对应的计费规则信息。
图 6是根据本发明实施例优选应用实例三的流程图， 在该应用实例三与 应用实例一的唯一不同是： 在步骤 S502a (对应步骤 S302a )中， 拜访网络对 三种计费方式都支持或三种计费方式拜访网络都支持且 UE都签约， IP-EDGE 或者 vPCRF在发给 hPCRF的会话请求中， 不携带任何计费方式信息， 即釆 用隐式的方式携带用于表明拜访网络支持的计费方式或拜访网络支持且 UE 签约的计费方式的信息， hPCRF根据选择本网支持的计费方式， 也即确定协 商后的计费方式， 并制定对应的计费规则信息发送给拜访网络。
家乡网络在判断是否支持拜访网络的计费方式时， 除了根据本网络的能 力夕卜，还可能需要考虑终端的签约信息。例如，对于基于 solicited (请求式的） 模式 TDF 和对应的基于 TDF 的计费， 是需要用户签约信息决策的。 因此 hPCRF在判断是否接受拜访网络发送来的计费方式的时候， 应考虑终端的签 约信息。
为了实现上述实施例和应用实例的方法， 本发明实施例还提供了一种网 络网元， 如图 7所示， 所述网元包括：
协商单元， 设置为： 用户设备（UE )接入拜访网络后且该网络网元为所 述 UE的拜访网络网元时，与所述 UE的家乡网络网元协商计费方式； 用户设 备（ UE )接入拜访网络后且该网络网元为所述 UE的家乡网络网元时， 所述 UE的拜访网络网元协商计费方式；
计费规则传递单元， 设置为： 该网络网元为所述 UE的拜访网络网元时， 接收所述家乡网络网元发送的协商后的计费方式对应的计费规则信息； 该网 络网元为所述 UE的家乡网络网元时， 向拜访网络网元发送的协商后的计费 方式对应的计费规则信息；
计费信息收集单元， 设置为： 该网络网元为所述 UE的拜访网络网元时， 根据所述计费规则信息针对所述 UE收集计费信息， 并将收集的计费信息结 果发送给所述家乡网络计费系统。
优选地， 该网络网元设置为： 为所述 UE的拜访网络网元时， 所述协商 单元结合所述 UE签约信息确定协商后的计费方式。
所述拜访网络网元的协商单元还设置为：向所述家乡网络网元发送请求 , 其中携带用于表明拜访网络支持的其中一种或多种计费方式的信息；
所述家乡网络网元的协商单元设置为： 根据拜访网络网元发送的计费方 式以及其支持的计费方式确定协商后的计费方式。
可选地， 所述信息釆用隐式的方式表示。
优选地 ,所述请求中携带用于表明拜访网络支持的多种计费方式的信息 , 所述消息中还携带计费方式优先级信息， 所述家乡网络网元的协商单元结合 所述优先级信息确定协商后的计费方式。
本发明实施例漫游计费实现方法及网络网元通过拜访网络网元与所述 UE的家乡网络网元协商计费方式，使得拜访网络网元可根据所述协商一致的 计费方式对应的计费规则信息针对所述 UE收集计费信息， 解决了相关用户 设备漫游时无法正确计费的问题。
显然， 本领域的技术人员应该明白， 上述的本发明实施例的一个或多个 模块或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， 并且在某些情况下， 可以以不同于此处的顺序执行所示出或描述 的步骤， 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， 本发明实施例不限制于任 何特定的硬件和软件结合。 施例， 对于本领域的技术人员来说， 本发明实施例可以有一种或多种更改和 变化。 凡在本发明实施例的精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明实施例的保护范围之内。
工业实用性
本发明实施例漫游计费实现方法及网络网元通过拜访网络网元与所述
UE的家乡网络网元协商计费方式，使得拜访网络网元可根据所述协商一致的 计费方式对应的计费规则信息针对所述 UE收集计费信息， 解决了相关用户 设备漫游时无法正确计费的问题。

Claims

权 利 要 求 书
1、 一种漫游计费实现方法， 该方法包括：
用户设备 ( UE )接入拜访网络后， 所述拜访网络网元与所述 UE的家乡 网络网元协商计费方式；
协商成功后， 所述拜访网络网元接收所述家乡网络网元发送的协商后的 计费方式对应的计费规则信息；
所述拜访网络网元根据所述计费规则信息针对所述 UE收集计费信息， 并将收集的计费信息发送给所述家乡网络计费系统。
2、 如权利要求 1所述的方法，其中： 所述拜访网络网元为拜访网络的 策略和计费规则功能（ vPCRF )和 IP边缘网关 （ IP-EDGE ) , 家乡网络网元 是家乡网络的策略和计费规则功能（hPCRF ) 。
3、 如权利要求 1所述的方法， 其中： 所述拜访网络网元与所述 UE的 家乡网络网元协商计费方式时结合所述 UE签约信息确定协商后的计费方式。
4、 如权利要求 1所述的方法， 其中， 所述拜访网络网元与所述 UE的 家乡网络网元协商计费方式的步骤包括：
所述拜访网络网元向所述家乡网络网元发送请求， 其中携带用于表明拜 访网络支持的其中一种或者多种计费方式的信息；
所述家乡网络网元根据拜访网络网元发送的计费方式以及其支持的计费 方式确定协商后的计费方式。
5、 如权利要求 4所述的方法， 其中： 所述信息釆用隐式的方式表示。
6、 如权利要求 4所述的方法，其中： 所述请求中携带用于表明拜访网 络支持的多种计费方式的信息， 所述消息中还携带计费方式优先级信息， 所 述家乡网络网元结合所述优先级信息确定协商后的计费方式。
7、 如权利要求 1所述的方法， 其中， 协商不成功时， 会话建立失败或 会话建立成功， 但所述家乡网络网元向所述拜访网络网元发送的回应消息中 无计费规则。
8、 一种网络网元， 所述网元包括：
协商单元， 设置为： 用户设备（UE )接入拜访网络后且该网络网元为所 述 UE的拜访网络网元时，与所述 UE的家乡网络网元协商计费方式； 用户设 备（ UE )接入拜访网络后且该网络网元为所述 UE的家乡网络网元时， 所述 UE的拜访网络网元协商计费方式；
计费规则传递单元， 设置为： 该网络网元为所述 UE的拜访网络网元时， 接收所述家乡网络网元发送的协商后的计费方式对应的计费规则信息； 该网 络网元为所述 UE的家乡网络网元时， 向拜访网络网元发送的协商后的计费 方式对应的计费规则信息；
计费信息收集单元， 设置为： 该网络网元为所述 UE的拜访网络网元时， 用于根据所述计费规则信息针对所述 UE收集计费信息， 并将收集的计费信 息结果发送给所述家乡网络计费系统。
9、 如权利要求 8所述的网络网元， 其中， 该网络网元设置为： 为所述 UE的拜访网络网元时， 所述协商单元结合所述 UE签约信息确定协商后的计 费方式。
10、 如权利要求 8所述的网络网元， 其中：
所述拜访网络网元的协商单元还设置为：向所述家乡网络网元发送请求 , 其中携带用于表明拜访网络支持的其中一种或多种计费方式的信息；
所述家乡网络网元的协商单元设置为： 根据拜访网络网元发送的计费方 式以及其支持的计费方式确定协商后的计费方式。
11、 如权利要求 10所述的网络网元， 其中： 所述信息釆用隐式的方式 表示。
12、 如权利要求 10所述的网络网元， 其中： 所述请求中携带用于表明拜 访网络支持的多种计费方式的信息，所述消息中还携带计费方式优先级信息， 所述家乡网络网元的协商单元结合所述优先级信息确定协商后的计费方式。
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