WO2009046610A1 - Charging method and system for prepaid service - Google Patents

Charging method and system for prepaid service Download PDF

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Publication number
WO2009046610A1
WO2009046610A1 PCT/CN2008/000377 CN2008000377W WO2009046610A1 WO 2009046610 A1 WO2009046610 A1 WO 2009046610A1 CN 2008000377 W CN2008000377 W CN 2008000377W WO 2009046610 A1 WO2009046610 A1 WO 2009046610A1
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WO
WIPO (PCT)
Prior art keywords
prepaid
mobile switching
switching center
location register
service
Prior art date
Application number
PCT/CN2008/000377
Other languages
French (fr)
Chinese (zh)
Inventor
Jingyue Shen
Jun Ge
Xiaofei Cao
Yanmei Chen
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Publication of WO2009046610A1 publication Critical patent/WO2009046610A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a charging method and system for a prepaid service.
  • CDMA Code Division Multiple Access
  • FIG. 1 is a structural diagram of the network element of the prepaid service in the prior art.
  • the Service Switch Point (SSP) 101 and the Service Control Point (SCP) 103 implement real-time charging for users through the Mobile Application Part (MAP) 104 protocol.
  • the prepaid subscription information of the user is downloaded from the home location register (HLR) 102 to which the user belongs.
  • HLR home location register
  • the SSP 101 is generally integrated with the functions of the network element by the Mobile Switch Center (MSC).
  • MSC Mobile Switch Center
  • 3G Third Generation
  • MSCe Mobile Switch Center emulation
  • MGW Media Gateway
  • the SIP protocol pre-paid server (Prepaid Server, called PPS), but the current CDMA2000 network lacks the method of using the payment server and adopting the IP mode.
  • PPS Prepaid Server
  • the technical problem to be solved by the present invention is to provide a charging method for a prepaid service and a system thereof for implementing a prepaid charging service by using a SIP protocol and a prepaid server PPS.
  • the present invention provides a charging method for a prepaid service, which is characterized in that it comprises: Step 1: The mobile switching center emulates the subscription information of the user from the home location register.
  • Step 2 The mobile switching center emulation # - sending the call request of the calling user terminal to the prepaid server according to the subscription information,
  • the prepaid server sends a request message to the mobile switching center emulation, requesting to establish a call to the called user terminal; and step 3, the mobile switching center emulates establishing a call connection to the called user terminal, the prepaid
  • the server starts real-time charging after the mobile switching center simulates entering the call state.
  • the charging method of the prepaid service wherein the subscription information includes: an IP address of the prepaid server and a service access code of a prepaid user, where the service access code is used to carry prepaid Fee business information.
  • the charging method of the prepaid service wherein the step 1 further includes: the step of the mobile switching center emulating obtaining the subscription information from the home location register by using an extended MAP protocol, specifically: Step 31: The mobile switching center simulates sending a registration request or an qualification request to the home location register; and step 32, the mobile switching center emulates a registration response or qualification application returned from the home location register by using an extended MAP protocol.
  • the subscription information is obtained in response.
  • the charging method of the prepaid service wherein the step 1 further includes: the step of the mobile switching center emulating obtaining the subscription information from the home location register by using an extended MAP protocol, specifically: Step 41: The home location register sends an eligibility indication message containing the subscription information to the mobile switching center, and step 42: the mobile switching center simulates returning an eligibility indication response to the home location register.
  • the charging method of the prepaid service wherein the step 1 further includes: the step of the mobile switching center emulating obtaining the subscription information from the home location register by using an extended MAP protocol, specifically: Step 51: The mobile switching center simulates sending a location request to the home location register.
  • the mobile switching center emulates a location request response or a service request response or an origin call request response or forwarding that is returned from the home location register by an extended MAP protocol.
  • the present invention further provides a charging system for a prepaid service, comprising: a mobile switching center emulation, a home location register, and a prepaid server; wherein the mobile The switching center emulation obtains the user's subscription information from the home location register, and according to the The subscription information sends a call request of the calling user terminal to the prepaid server; the prepaid server sends a request message to the mobile switching center emulation, requesting to establish a call to the called user terminal; the prepaid server is The mobile switching center emulates the establishment of the call connection to the called user terminal and starts the real-time charging after the call state is entered.
  • the charging system of the prepaid service further includes: a media gateway, connecting the mobile a switching center emulation, which is used for converting data.
  • the billing system of the prepaid service wherein the mobile switching center emulation and the prepaid server use a session initiation protocol to communicate by IP;
  • the mobile switching center emulation and the home location register use a mobile application part protocol, and the mobile switching center emulation and the media gateway directly adopt the H.248 protocol.
  • a fee system wherein the subscription information includes: an IP address of the prepaid server Prepaid service access code of the user, the service access code for carrying prepaid service information.
  • the present invention adopts the SIP protocol, using a prepaid servers PPS implements prepaid charging services.
  • FIG. 1 is a structural diagram of a network element composition of a prepaid service in the prior art
  • FIG. 2 is a structural diagram of a network element composition of a prepaid service in the present invention
  • FIG. 3 is a MAP protocol of the present invention by extending the MAP protocol.
  • FIG. 4 is a flow chart of obtaining the subscription information of the smart user by the HLR according to the present invention.
  • FIG. 5 is a flowchart of the MSCe acquiring the subscription information of the smart user from the HLR by extending the MAP protocol. Flowchart of the subscription information of the smart subscriber;
  • FIG. 6 is a flow chart of the billing implementation of the prepaid service in the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. As shown in FIG. 2, it is a structural diagram of a network element of a prepaid service in the present invention.
  • the structure is used in the field of wireless communications, including a mobile switching center emulation MSCe 201, a home location register HLR 102202, and a prepaid server PPS 203. , Media Gateway MGW 205.
  • the communication protocol between the mobile switching center emulation MSCe 201 and the prepaid server PPS 203 uses the session initiation protocol SIP to communicate in IP mode; the mobile switching center emulates the communication protocol between the MSCe 201 and the home location register HLR 1102 using the mobile application part protocol.
  • the mobile switching center emulates the communication protocol between the MSCe 201 and the media gateway MGW 205 directly adopts the H.248 protocol; the mobile switching center emulates the MSCe 201 and the home location register HLR 102102, The prepaid server PPS 203 cooperates to realize the service charging of the prepaid user.
  • the mobile switching center emulation MSCe 201 obtains the subscription information of the smart user from the home location register HLR 102202; when the calling user terminal initiates the call request, the mobile switching center emulates the MSCe 201 to send the request.
  • the prepaid server PPS 203 authenticates and balances the information of the calling user, if the calling user is a legitimate user registered for the prepaid server PPS 203 and the balance is sufficient to initiate this time.
  • Call > then the prepaid server PPS 203 sends a message to the mobile switching center emulation MSCe 201 requesting to establish a call to the called user terminal; the mobile switching center emulates the MSCe 201 to establish a call connection to the called user terminal; After the call, the prepaid server PPS 203 starts real-time charging.
  • the subscription information of the smart subscriber includes an IP address of the prepaid server PPS 203 and a service access code (AccessCode) of the prepaid subscriber, and the service information is carried by the service access code.
  • the central emulation MSCe 201 cooperates with the home location register HLR 110202 and the prepaid server PPS 203 to jointly implement the charging of the prepaid service; the mobile switching center emulates the interworking between the MSCe 201 and the prepaid server PPS 203 through the SIP protocol to implement the intelligent service and Value-added service:
  • the subscription information of the smart subscriber is brought to the mobile switching center emulation MSCe 201 by the home location register HLR 110202 by extending the MAP ten. As shown in FIG.
  • Step S301 the MSCe/VLR (Vistor Location Register) sends an EGTOT (registration request) or QUALREQ (Eligibility Request) message to the HLR;
  • Step S302 the present invention Extended MAP protocol, in regnot (registration response) or qualreq (qualification application)
  • the subscription information field of the smart user is obtained, including the IP address of the prepaid server PPS and the AccessCode (service access code) of the prepaid user, and the service information is carried by the service access code.
  • MSCe obtains intelligence from the HLR.
  • the flow chart of the subscription information of the user includes the following steps: Step S401: The HLR sends a QUALDIR (Qualification Indication) message to the MSCe/VLR.
  • the present invention extends the MAP protocol, and the message carries the information of the subscription information field of the smart user, including The IP address of the page payment server PPS and the AccessCode of the prepaid user.
  • Step S402 the MSCe/VLR returns a qualdir (qualification indication response) message to the HLR. As shown in FIG.
  • Step S501 The MSCe sends a LOCREQ (Location Request) or FEATREQ (Service Request) to the HLR or ORIGREQ (originating call request) or TRANUMRE (forwarding number request) message; step S502, the present invention extends MAP protocol, in locreq (location request response) or featreq
  • the subscription information field of the forwarded smart user is obtained in the (business application response) or orreq (origin call request response) or trannumreq (forward number request response) message.
  • FIG. 6 it is a flow chart of charging implementation of the prepaid service in the present invention.
  • the prepaid server PPS receives the incoming call triggered by the MSCe (the call is an incoming call for the prepaid server PPS, called InCallLeg), and the outgoing call (call from the prepaid server PPS, called OutCallLeg)
  • the specific implementation steps of the process are as follows: Step S601, the MSCe sends an INVITE message to trigger the prepaid server PPS, and requests the prepaid server PPS to process the call request of the calling user (InCallLeg); Step S602
  • the prepaid server PPS responds to the 100 TRYING message after receiving the INVITE message (InCallLeg);
  • Step S603 the prepaid server PPS authenticates the balance user's information and balances the balance, if the user pays for the child's payment server PPS The registered legitimate user and the balance is sufficient to initiate the call.
  • the prepaid server PPS sends an INVITE message to the MSCe requesting to establish a call to the called user (OutCallLeg); in step S604, the MSCe receives the INVITE message and responds to 100 TRYING (OutCallLeg); S605, the MSCe establishes a call connection to the called user, and after the called user rings, the MSCe sends the call to the prepaid server P.
  • PS sends 180 RINGING message (OutCallLeg); Step S606, the prepaid server PPS receives the 180 RINGING message, and sends 180 RINGING (InCallLeg) to the MSCe.
  • Step S607 the called user answers, and the MSCe sends a 200 OK (complete) message (OutCallLeg) to the prepaid server PPS; step S608, The prepaid server PPS receives the 200 OK message of the response, and responds to the ACK (Response) message (OutCallLeg); Step S609, the prepaid server PPS sends a 200 OK message (InCallLeg) to the MSCe; Step S610, the MSCe receives the PPS from the prepaid server.
  • the response is 200 OK, the ACK message is responded, the call state is entered (InCallLeg), the prepaid server PPS starts real-time charging; in step S611, the calling user hangs up, and the MSCe sends a BYE (goodbye) message to the prepaid server PPS (InCallLeg) Step S612, after receiving the PPS of the prepaid server, stop charging, responding to 200 OK, InCallLeg is released; Step S613, the prepaid server PPS sends a BYE message to the MSCe, releasing the called user (OutCallLeg) precedeStep S614, MSCe After the response, 200 OK, OutCallLeg is released.
  • BYE goodbye
  • the invention realizes an IP method and realizes prepayment by using a prepaid server by extending the MAP protocol.
  • Method for charging the fee service By cooperating with the MSCe and the HLR and the prepaid server, the billing of the prepaid service is realized together; the MSCe and the prepaid server are mutually communicated through the SIP protocol to realize the intelligent service and the value-added service;
  • the information includes the IP address of the prepaid server and the AccessCode of the prepaid subscriber (the service access code, which is carried by the service access code), and is carried by the HLR to the MSCe through the extended MAP protocol.

Abstract

A charging method and system that applies to wireless communication field for prepaid service is provided. The method comprises that: step 1, mobile switch center emulation acquires registration information of user from home location register; step 2, the mobile switch center emulation sends call request originated from the calling user terminal to prepaid server based on the registration information, then the prepaid server sends invite message to the mobile switch center emulation to request call establishment to called user terminal; and step 3, the mobile switch center emulation establishes call connection to the called user terminal, and the prepaid server begins real-time charging after the mobile switch center emulation entered into communication state. The invention realizes prepaid charging service by using SIP protocol and prepaid server PPS.

Description

预付费业务的计费方法及系统 技术领域 本发明涉及无线通信领域， 尤其涉及一种预付费业务的计费方法及系 统。 背景技术 传统的码分多址（ Code Division Multiple Access, 简称 CDMA )网络中， 预付费业务的实现方式， 如图 1所示， 是现有技术中预付费业务的网元组成 结构图 , 是由业务交换点 （ Service Switch Point, 简称 SSP ) 101和业务控制 点 ( Service Control Point, 简称 SCP ) 103之间通过移动应用部分 ( Mobile Application Part, 筒称 MAP ) 104协议实现用户的实时计费， 而用户的预付 费签约信息是 MSC 从用户所归属的归属位置寄存器 （Home Location Register, 简称 HLR ) 102中下载得到的。 当用户发起一个呼叫、 以及通话开 始和通话结束时，通过 SSP 101触发每个检测点的触发器，发送消息通知 SCP 103, SCP 103进行实时计费。 SSP 101—般由移动交换中心 （Mobile Switch Center, 筒称 MSC ) 集成该网元的功能。 当 CDMA 网络演进到第三代（Third Generation, 筒称 3G ) 阶段时， MSC演变成移动交换中心仿真（ Mobile Switch Center emulation,简称 MSCe ) 和媒体网关 （Media Gateway, 简称 MGW )， 网元之间更多的通讯方式采用 IP方式， 而会话发起协议（ Session Initiation Protocol, 简称 SIP )作为一种 常见的网元之间的通讯协议， 应用也越来越广泛了， 在此前提下， 出现了采 用 SIP协议进行预付费用户计费的预付费服务器（ Prepaid Server,筒称 PPS ), 但是目前 CDMA2000网络中缺少利用付费服务器和采用 IP方式计费的方法。 发明内容 本发明所要解决的技术问题在于提供一种预付费业务的计费方法及其 系统， 用于通过采用 SIP协议、 预付费服务器 PPS来实现预付费计费业务。 为了实现上述目的 , 本发明提供了一种预付费业务的计费方法， 其特征 在于， 包括：： 步骤一， 移动交换中心仿真从归属位置寄存器中获取用户的签约信息； 步骤二，所述移动交换中心仿真 # -据所述签约信息将主叫用户终端的呼 叫请求发送至预付费服务器， 所述预付费服务器发送请求消息至所述移动交 换中心仿真， 请求建立到被叫用户终端的呼叫； 以及 步骤三， 所述移动交换中心仿真建立到所述被叫用户终端的呼叫接续， 所述预付费服务器在所述移动交换中心仿真进入通话状态后开始实时计费。 所述的预付费业务的计费方法， 其中， 所述签约信息包括： 所述预付费 月良务器的 IP地址和预付费用户的业务接入码，所述业务接入码用于携带预付 费业务信息。 所述的预付费业务的计费方法， 其中， 所述步 一中， 进一步包括： 所 述移动交换中心仿真通过扩展 MAP协议从所述归属位置寄存器中获取所述 签约信息的步骤， 具体为： 步驟 31 , 所述移动交换中心仿真向所述归属位置寄存器发送登记请求 或资格申请请求； 及 步骤 32,所述移动交换中心仿真通过扩展 MAP协议从所述归属位置寄 存器返回的登记响应或资格申请响应中获取所述签约信息。 所述的预付费业务的计费方法， 其中， 所述步骤一中， 进一步包括： 所 述移动交换中心仿真通过扩展 MAP协议从所述归属位置寄存器中获取所述 签约信息的步驟， 具体为： 步骤 41 , 所述归属位置寄存器向所述移动交换中心仿真发送含有所述 签约信息的资格指示消息； 及 步骤 42 , 所述移动交换中心仿真向所述归属位置寄存器返回资格指示 响应。 所述的预付费业务的计费方法， 其中， 所述步骤一中， 进一步包括： 所 述移动交换中心仿真通过扩展 MAP协议从所述归属位置寄存器中获取所述 签约信息的步骤， 具体为： 步骤 51 , 所述移动交换中心仿真向所述归属位置寄存器发送位置请求 或业务申请或始呼请求或前 "号码申请； 及 步骤 52,所述移动交换中心仿真通过扩展 MAP协议从所述归属位置寄 存器返回的位置请求响应或业务申请响应或始呼请求响应或前转号码申请响 应中获取所述签约信息。 所述的预付费业务的计费方法， 其中， 所述步骤二中， 进一步包括： 所 述预付费服务器对所述主叫用户终端鉴权和余额审核的步骤， 当所述主叫用 户终端的用户为所述预付费服务器登记的合法用户且所述主叫用户终端的余 额足以发起所述呼叫时， 所述预付费服务器发送所述请求消息至所述移动交 换中心仿真。 为了实现上述目的， 本发明还提供了一种预付费业务的计费系统， 其特 征在于， 包括： 移动交换中心仿真、 归属位置寄存器、预付费服务器；。 其中， 所述移动交换中心仿真从归属位置寄存器中获取用户的签约信息，； 并 根据所述签约信息将主叫用户终端的呼叫请求发送至所述预付费服务器； 所 述预付费服务器发送请求消息至所述移动交换中心仿真 , 请求建立到被叫用 户终端的呼叫； 所述预付费服务器在所述移动交换中心仿真建立到所述被叫用户终端 的呼叫接续并进入通话状态后开始实时计费。 所述的预付费业务的计费系统， 其中， 还包括： 媒体网关， 连接所述移 动交换中心仿真， 用于对数据进行转换处理。 所述的预付费业务的计费系统， 其中， 所述移动交换中心仿真与所述预 付費服务器之间通讯采用会话发起协议， 以 IP方式通讯； 所述移动交换中心 仿真与所述归属位置寄存器之间通讯采用移动应用部分协议 , 所述移动交换 中心仿真与所述媒体网关之间通讯直接采用 H.248协议。 所述的预付费业务的计费系统， 其中， 所述签约信息包括： 所述预付费 服务器的 IP地址和预付费用户的业务接入码，所述业务接入码用于携带预付 费业务信息。 综上所述， 本发明通过采用 SIP协议， 利用预付费服务器 PPS 实现了 预付费计费业务。 以下结合附图和具体实施例对本发明进行详细描述，但不作为对本发明 的限定。 附图说明 此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部 分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的 不当限定。 在附图中： 图 1是现有技术中预付费业务的网元组成结构图； 图 2是本发明中预付费业务的网元组成结构图； 图 3是本发明通过扩展 MAP协议， MSCe从 HLR获取智能用户的签约 信息的流程图； 图 4是本发明通过扩展 MAP协议， MSCe从 HLR获取智能用户的签约 信息的流程图； . · 图 5是本发明通过扩展 MAP协议， MSCe从 HLR获取智能用户的签约 信息的流程图； 图 6是本发明中预付费业务的计费实现流程图。 具体实施方式 下面结合附图和具体实施方式对本发明的技术方案作进一步更详细的 描述。 如图 2所示， 是本发明中预付费业务的网元组成结构图， 该结构用于无 线通信领域， 包括移动交换中心仿真 MSCe 201、 归属位置寄存器 HLR 102202、 预付费月良务器 PPS 203、 媒体网关 MGW 205。 移动交换中心仿真 MSCe 201与预付费服务器 PPS 203之间的通讯协议 采用会话发起协议 SIP, 以 IP方式通讯； 移动交换中心仿真 MSCe 201与归 属位置寄存器 HLR 1102之间的通讯协议采用移动应用部分协议 MAP, 移 动交换中心仿真 MSCe 201与媒体网关 MGW 205之间的通讯协议直接采用 H.248协议； 移动交换中心仿真 MSCe 201与归属位置寄存器 HLR 102102、 预付费服务器 PPS 203之间配合共同实现预付费用户的业务计费。 在图 2中， 通过扩展 MAP协议， 移动交换中心仿真 MSCe 201从归属 位置寄存器 HLR 102202中获取智能用户的签约信息； 当主叫用户终端发起呼叫请求时，移动交换中心仿真 MSCe 201将该请 求发送给预付费服务器 PPS 203, 预付费月艮务器 PPS 203对主叫用户的信息 进行鉴权和余额审核， 如果该主叫用户为该预付费服务器 PPS 203登记的合 法用户且余额够发起本次呼叫 > 则预付费月良务器 PPS 203向移动交换中心仿 真 MSCe 201发送消息， 请求建立到被叫用户终端的呼叫； 移动交换中心仿真 MSCe 201建立到被叫用户终端的呼叫接续； 在呼叫 建立， 通话后， 预付费服务器 PPS 203开始实时计费。 进一步地， 智能用户的签约信息包括预付费服务器 PPS 203的 IP地址 和预付费用户的业务接入码（ AccessCode (业务接入码 ), 业务信息通过业务 接入码携带。 进一步地， 由移动交换中心仿真 MSCe 201 和归属位置寄存器 HLR 110202、 预付费服务器 PPS 203配合， 共同实现预付费业务的计费； 移动交 换中心仿真 MSCe 201和预付费服务器 PPS 203之间通过 SIP协议互通来实 现智能业务和增值业务；。 通过扩展 MAP十办议由归属位置寄存器 HLR 110202将智能用户的签约 信息带给移动交换中心仿真 MSCe 201。 如图 3所示， 是本发明通过扩展 MAP协议， MSCe从 HLR获取智能用 户的签约信息的流程图， 包括以下步骤： 步骤 S301 , MSCe/VLR ( Vistor Location Register, 拜访位置寄存器）向 HLR发送 EGNOT (登记请求）或 QUALREQ (资格申请求请 ) 消息； 步骤 S302, 本发明扩展 MAP协议， 在 regnot (登记响应）或 qualreq (资格申请响应）中获取到智能用户的签约信息字段，包括预付费服务器 PPS 的 IP地址和预付费用户的 AccessCode (业务接入码）， 业务信息通过业务接 入码携带。 如图 4所示， 是本发明通过扩展 MAP协议， MSCe从 HLR获取智能用 户的签约信息的流程图， 包括以下步骤: 步骤 S401 , HLR向 MSCe/VLR发送 QUALDIR (资格指示） 消息； 本 发明扩展 MAP协议， 在此消息中携带了智能用户的.签约信息字段， 包^页 付费服务器 PPS的 IP地址和预付费用户的 AccessCode。 步骤 S402 , MSCe/VLR给 HLR返回 qualdir (资格指示响应） 消息。 如图 5所示， 是本发明通过扩展 MAP协议， MSCe从 HLR获取智能用 户的签约信息的流程图， 包括以下步 : 步驟 S501 , MSCe向 HLR发送 LOCREQ (位置请求）或 FEATREQ (业 务申请）或 ORIGREQ (始呼请求）或 TRANUMRE (前转号码申请） 消息； 步骤 S502 ,本发明扩展 MAP协议，在 locreq (位置请求响应）或 featreqThe present invention relates to the field of wireless communications, and in particular, to a charging method and system for a prepaid service. In the traditional Code Division Multiple Access (CDMA) network, the implementation of the prepaid service is as shown in FIG. 1 , which is a structural diagram of the network element of the prepaid service in the prior art. The Service Switch Point (SSP) 101 and the Service Control Point (SCP) 103 implement real-time charging for users through the Mobile Application Part (MAP) 104 protocol. The prepaid subscription information of the user is downloaded from the home location register (HLR) 102 to which the user belongs. When the user initiates a call, and the call starts and the call ends, the trigger of each detection point is triggered by the SSP 101, and a message is sent to notify the SCP 103 that the SCP 103 performs real-time charging. The SSP 101 is generally integrated with the functions of the network element by the Mobile Switch Center (MSC). When the CDMA network evolves to the third generation (Third Generation, 3G) phase, the MSC evolves into a Mobile Switch Center emulation (MSCe) and a Media Gateway (MGW). More communication methods adopt IP mode, and Session Initiation Protocol (SIP) is a common communication protocol between network elements. The application is also more and more widely used. Under this premise, the adoption has taken place. The SIP protocol pre-paid server (Prepaid Server, called PPS), but the current CDMA2000 network lacks the method of using the payment server and adopting the IP mode. SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide a charging method for a prepaid service and a system thereof for implementing a prepaid charging service by using a SIP protocol and a prepaid server PPS. In order to achieve the above object, the present invention provides a charging method for a prepaid service, which is characterized in that it comprises: Step 1: The mobile switching center emulates the subscription information of the user from the home location register. Step 2: The mobile switching center emulation # - sending the call request of the calling user terminal to the prepaid server according to the subscription information, The prepaid server sends a request message to the mobile switching center emulation, requesting to establish a call to the called user terminal; and step 3, the mobile switching center emulates establishing a call connection to the called user terminal, the prepaid The server starts real-time charging after the mobile switching center simulates entering the call state. The charging method of the prepaid service, wherein the subscription information includes: an IP address of the prepaid server and a service access code of a prepaid user, where the service access code is used to carry prepaid Fee business information. The charging method of the prepaid service, wherein the step 1 further includes: the step of the mobile switching center emulating obtaining the subscription information from the home location register by using an extended MAP protocol, specifically: Step 31: The mobile switching center simulates sending a registration request or an qualification request to the home location register; and step 32, the mobile switching center emulates a registration response or qualification application returned from the home location register by using an extended MAP protocol. The subscription information is obtained in response. The charging method of the prepaid service, wherein the step 1 further includes: the step of the mobile switching center emulating obtaining the subscription information from the home location register by using an extended MAP protocol, specifically: Step 41: The home location register sends an eligibility indication message containing the subscription information to the mobile switching center, and step 42: the mobile switching center simulates returning an eligibility indication response to the home location register. The charging method of the prepaid service, wherein the step 1 further includes: the step of the mobile switching center emulating obtaining the subscription information from the home location register by using an extended MAP protocol, specifically: Step 51: The mobile switching center simulates sending a location request to the home location register. Or a service request or a first call request or a previous "number application; and step 52, the mobile switching center emulates a location request response or a service request response or an origin call request response or forwarding that is returned from the home location register by an extended MAP protocol. The method for obtaining the subscription information in the number application response, the charging method of the prepaid service, wherein the step 2 further includes: the prepaid server authenticating the authentication and balance of the calling user terminal Step, when the user of the calling user terminal is a legitimate user registered by the prepaid server and the balance of the calling user terminal is sufficient to initiate the call, the prepaid server sends the request message to the Mobile switching center emulation. In order to achieve the above object, the present invention further provides a charging system for a prepaid service, comprising: a mobile switching center emulation, a home location register, and a prepaid server; wherein the mobile The switching center emulation obtains the user's subscription information from the home location register, and according to the The subscription information sends a call request of the calling user terminal to the prepaid server; the prepaid server sends a request message to the mobile switching center emulation, requesting to establish a call to the called user terminal; the prepaid server is The mobile switching center emulates the establishment of the call connection to the called user terminal and starts the real-time charging after the call state is entered. The charging system of the prepaid service further includes: a media gateway, connecting the mobile a switching center emulation, which is used for converting data. The billing system of the prepaid service, wherein the mobile switching center emulation and the prepaid server use a session initiation protocol to communicate by IP; The mobile switching center emulation and the home location register use a mobile application part protocol, and the mobile switching center emulation and the media gateway directly adopt the H.248 protocol. a fee system, wherein the subscription information includes: an IP address of the prepaid server Prepaid service access code of the user, the service access code for carrying prepaid service information. In summary, the present invention adopts the SIP protocol, using a prepaid servers PPS implements prepaid charging services. The invention is described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 1 is a structural diagram of a network element composition of a prepaid service in the prior art; FIG. 2 is a structural diagram of a network element composition of a prepaid service in the present invention; FIG. 3 is a MAP protocol of the present invention by extending the MAP protocol. FIG. 4 is a flow chart of obtaining the subscription information of the smart user by the HLR according to the present invention. FIG. 5 is a flowchart of the MSCe acquiring the subscription information of the smart user from the HLR by extending the MAP protocol. Flowchart of the subscription information of the smart subscriber; FIG. 6 is a flow chart of the billing implementation of the prepaid service in the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. As shown in FIG. 2, it is a structural diagram of a network element of a prepaid service in the present invention. The structure is used in the field of wireless communications, including a mobile switching center emulation MSCe 201, a home location register HLR 102202, and a prepaid server PPS 203. , Media Gateway MGW 205. The communication protocol between the mobile switching center emulation MSCe 201 and the prepaid server PPS 203 uses the session initiation protocol SIP to communicate in IP mode; the mobile switching center emulates the communication protocol between the MSCe 201 and the home location register HLR 1102 using the mobile application part protocol. MAP, the mobile switching center emulates the communication protocol between the MSCe 201 and the media gateway MGW 205 directly adopts the H.248 protocol; the mobile switching center emulates the MSCe 201 and the home location register HLR 102102, The prepaid server PPS 203 cooperates to realize the service charging of the prepaid user. In FIG. 2, by extending the MAP protocol, the mobile switching center emulation MSCe 201 obtains the subscription information of the smart user from the home location register HLR 102202; when the calling user terminal initiates the call request, the mobile switching center emulates the MSCe 201 to send the request. To the prepaid server PPS 203, the prepaid server PPS 203 authenticates and balances the information of the calling user, if the calling user is a legitimate user registered for the prepaid server PPS 203 and the balance is sufficient to initiate this time. Call > then the prepaid server PPS 203 sends a message to the mobile switching center emulation MSCe 201 requesting to establish a call to the called user terminal; the mobile switching center emulates the MSCe 201 to establish a call connection to the called user terminal; After the call, the prepaid server PPS 203 starts real-time charging. Further, the subscription information of the smart subscriber includes an IP address of the prepaid server PPS 203 and a service access code (AccessCode) of the prepaid subscriber, and the service information is carried by the service access code. Further, by the mobile exchange The central emulation MSCe 201 cooperates with the home location register HLR 110202 and the prepaid server PPS 203 to jointly implement the charging of the prepaid service; the mobile switching center emulates the interworking between the MSCe 201 and the prepaid server PPS 203 through the SIP protocol to implement the intelligent service and Value-added service: The subscription information of the smart subscriber is brought to the mobile switching center emulation MSCe 201 by the home location register HLR 110202 by extending the MAP ten. As shown in FIG. 3, the present invention expands the MAP protocol, and the MSCe acquires intelligence from the HLR. The flow chart of the user's subscription information includes the following steps: Step S301, the MSCe/VLR (Vistor Location Register) sends an EGTOT (registration request) or QUALREQ (Eligibility Request) message to the HLR; Step S302, the present invention Extended MAP protocol, in regnot (registration response) or qualreq (qualification application The subscription information field of the smart user is obtained, including the IP address of the prepaid server PPS and the AccessCode (service access code) of the prepaid user, and the service information is carried by the service access code. As shown in FIG. Invented by the extended MAP protocol, MSCe obtains intelligence from the HLR. The flow chart of the subscription information of the user includes the following steps: Step S401: The HLR sends a QUALDIR (Qualification Indication) message to the MSCe/VLR. The present invention extends the MAP protocol, and the message carries the information of the subscription information field of the smart user, including The IP address of the page payment server PPS and the AccessCode of the prepaid user. Step S402, the MSCe/VLR returns a qualdir (qualification indication response) message to the HLR. As shown in FIG. 5, the flow chart of the invention for acquiring the subscription information of the smart user from the HLR by the MSCe by extending the MAP protocol includes the following steps: Step S501: The MSCe sends a LOCREQ (Location Request) or FEATREQ (Service Request) to the HLR or ORIGREQ (originating call request) or TRANUMRE (forwarding number request) message; step S502, the present invention extends MAP protocol, in locreq (location request response) or featreq
(业务申请响应）或 orreq (始呼请求响应）或 trannumreq (前转号码申请响 应） 消息中获取到发生前转智能用户的签约信息字段。 如图 6所示， 是本发明中预付费业务的计费实现流程图。预付费服务器 PPS接收 MSCe触发的入呼叫 （该呼叫对于预付费服务器 PPS而言， 是一个 入呼叫， 称之为 InCallLeg ), 则出呼叫 （从预付费服务器 PPS发出的呼叫， 称之为 OutCallLeg )也将呼向同一个 MSCe, 该流程的具体实现步骤如下： 步骤 S601 , MSCe发送 INVITE (邀请 ) 消息触发预付费服务器 PPS, 请求预付费服务器 PPS处理主叫用户的呼叫请求（ InCallLeg ); 步驟 S602, 预付费服务器 PPS收到 INVITE消息后回应 100 TRYING (尝试） 消息 （ InCallLeg ); 步骤 S603 ,预付费服务器 PPS对主叫用户的信息进行鉴权和余额审核， 如果用户为该子贞付费服务器 PPS登记的合法用户且余额够发起本次呼叫 ' 预 付费服务器 PPS向 MSCe发送 INVITE消息' 请求建立到被叫用户的呼叫 ( OutCallLeg ); 步驟 S604, MSCe收到 INVITE消息回应 100 TRYING ( OutCallLeg ); 步骤 S605 , MSCe建立到被叫用户的呼叫接续，被叫用户振铃后 , MSCe 向预付费服务器 PPS发送 180 RINGING (进展） 消息 （ OutCallLeg ); 步骤 S606，预付费服务器 PPS收到 180 RINGING消息， 向 MSCe发送 180 RINGING ( InCallLeg ); 步骤 S607,被叫用户应答， MSCe向预付费服务器 PPS发送 200 OK(完 成） 消息 ( OutCallLeg ); 步驟 S608 ,预付费服务器 PPS收到应答的 200 OK消息，回应 ACK(响 应 ) 消息 ( OutCallLeg ); 步驟 S609,预付费服务器 PPS向 MSCe发送 200 OK消息（ InCallLeg ); 步骤 S610, MSCe收到来自预付费服务器 PPS的应答 200 OK, 回应 ACK消息， 进入通话态 （InCallLeg ), 预付费服务器 PPS开始实时计费； 步骤 S611 , 主叫用户挂机， MSCe发送 BYE (再见） 消息给预付费月良 务器 PPS ( InCallLeg ); 步骤 S612,预付费服务器 PPS收到后，停止计费，回应 200 OK, InCallLeg 释放； 步骤 S613 ,预付费服务器 PPS向 MSCe发送 BYE消息，释放被叫用户 ( OutCallLeg )„ 步骤 S614, MSCe收到后回应 200 OK, OutCallLeg释放。 本发明通过扩展 MAP协议， 实现了一种采用 IP方式，利用预付费服务 器实现预付费业务计费的方法。 通过由 MSCe和 HLR、 预付费服务器配合， 共同实现预付费业务的计费； MSCe和预付费服务器之间通过 SIP协议互通 来实现智能业务和增值业务； 用户的智能签约信息， 包括预付费服务器的 IP 地址和预付费用户的 AccessCode (业务接入码， 业务信息通过业务接入码携 带）， 通过扩展 MAP协议由 HLR带给 MSCe。 以上所述仅为本发明的实施例而已， 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权利要求 范围之内。 The subscription information field of the forwarded smart user is obtained in the (business application response) or orreq (origin call request response) or trannumreq (forward number request response) message. As shown in FIG. 6, it is a flow chart of charging implementation of the prepaid service in the present invention. The prepaid server PPS receives the incoming call triggered by the MSCe (the call is an incoming call for the prepaid server PPS, called InCallLeg), and the outgoing call (call from the prepaid server PPS, called OutCallLeg) The specific implementation steps of the process are as follows: Step S601, the MSCe sends an INVITE message to trigger the prepaid server PPS, and requests the prepaid server PPS to process the call request of the calling user (InCallLeg); Step S602 The prepaid server PPS responds to the 100 TRYING message after receiving the INVITE message (InCallLeg); Step S603, the prepaid server PPS authenticates the balance user's information and balances the balance, if the user pays for the child's payment server PPS The registered legitimate user and the balance is sufficient to initiate the call. The prepaid server PPS sends an INVITE message to the MSCe requesting to establish a call to the called user (OutCallLeg); in step S604, the MSCe receives the INVITE message and responds to 100 TRYING (OutCallLeg); S605, the MSCe establishes a call connection to the called user, and after the called user rings, the MSCe sends the call to the prepaid server P. PS sends 180 RINGING message (OutCallLeg); Step S606, the prepaid server PPS receives the 180 RINGING message, and sends 180 RINGING (InCallLeg) to the MSCe. Step S607, the called user answers, and the MSCe sends a 200 OK (complete) message (OutCallLeg) to the prepaid server PPS; step S608, The prepaid server PPS receives the 200 OK message of the response, and responds to the ACK (Response) message (OutCallLeg); Step S609, the prepaid server PPS sends a 200 OK message (InCallLeg) to the MSCe; Step S610, the MSCe receives the PPS from the prepaid server. The response is 200 OK, the ACK message is responded, the call state is entered (InCallLeg), the prepaid server PPS starts real-time charging; in step S611, the calling user hangs up, and the MSCe sends a BYE (goodbye) message to the prepaid server PPS (InCallLeg) Step S612, after receiving the PPS of the prepaid server, stop charging, responding to 200 OK, InCallLeg is released; Step S613, the prepaid server PPS sends a BYE message to the MSCe, releasing the called user (OutCallLeg) „Step S614, MSCe After the response, 200 OK, OutCallLeg is released. The invention realizes an IP method and realizes prepayment by using a prepaid server by extending the MAP protocol. Method for charging the fee service. By cooperating with the MSCe and the HLR and the prepaid server, the billing of the prepaid service is realized together; the MSCe and the prepaid server are mutually communicated through the SIP protocol to realize the intelligent service and the value-added service; The information includes the IP address of the prepaid server and the AccessCode of the prepaid subscriber (the service access code, which is carried by the service access code), and is carried by the HLR to the MSCe through the extended MAP protocol. The above is only the implementation of the present invention. The invention is not intended to limit the invention, and various modifications and changes can be made to those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention. It is intended to be included within the scope of the appended claims.

Claims

1. —种预付费业务的计费方法， 其特征在于， 包括： 1. A charging method for a prepaid service, characterized in that it comprises:
步驟一，移动交换中心仿真从归属位置寄存器中获取用户的签约信 息；  Step 1: The mobile switching center emulation obtains the subscription information of the user from the home location register;
步骤二，所述移动交换中心仿真根据所述签约信息将主叫用户终端 的呼叫请求发送至预付费服务器， 所述预付费服务器发送请求消息至所 权  Step 2: The mobile switching center simulates sending a call request of the calling user terminal to the prepaid server according to the subscription information, and the prepaid server sends the request message to the right
述移动交换中心仿真， 请求建立到被叫用户终端的呼叫； 以及  Mobile switching center emulation, requesting to establish a call to the called user terminal;
步骤三，所述移动交换中心仿真建立到所述被叫用户终端的呼叫接 续， 所述预付费服务器在所述移动交换中心仿真进入通话状态后开始实 时计费。  Step 3: The mobile switching center simulates establishing a call connection to the called user terminal, and the prepaid server starts real-time charging after the mobile switching center simulates entering a call state.
书  Book
2. 根据权利要求 1所述的预付费业务的计费方法， 其特征在于， 所述签约 信息包括： 所述预付费服务器的 IP地址和预付费用户的业务接入码， 其 中， 所述业务接入码用于携带预付费业务信息。  The charging method of the prepaid service according to claim 1, wherein the subscription information comprises: an IP address of the prepaid server and a service access code of a prepaid user, wherein the service The access code is used to carry prepaid service information.
3. 根据权利要求 1或 2所述的预付费业务的计费方法， 其特征在于， 所述 步骤一中， 进一步包括： 所述移动交换中心仿真通过扩展 MAP 协议从 所述归属位置寄存器中获取所述签约信息的步骤， 具体为： The charging method of the prepaid service according to claim 1 or 2, wherein, in the step 1, the method further comprises: the mobile switching center emulation being obtained from the home location register by using an extended MAP protocol The step of signing the information is specifically:
步驟 31 , 所述移动交换中心仿真向所述归属位置寄存器发送登记 请求或资格申请请求； 以及  Step 31: The mobile switching center simulates sending a registration request or a qualification application request to the home location register;
步骤 32， 所述移动交换中心仿真通过扩展 MAP协议从所述归属位 置寄存器返回的登记响应或资格申请响应中获取所述签约信息。  Step 32: The mobile switching center emulation obtains the subscription information by using an extended MAP protocol from a registration response or an eligibility application response returned by the home location register.
4. 根据权利要求 1或 2所述的预付费业务的计费方法， 其特征在于， 所述 步驟一中， 进一步包括： 所述移动交换中心仿真通过扩展 MAP 十办议从 所述归属位置寄存器中获取所述签约信息的步驟， 具体为： The charging method of the prepaid service according to claim 1 or 2, wherein, in the step 1, the method further comprises: the mobile switching center emulation from the home location register by extending the MAP ten The step of obtaining the subscription information is specifically:
步骤 41 , 所述归属位置寄存器向所述移动交换中心仿真发送含有 所述签约信息的资格指示消息； 以及  Step 41: The home location register sends an eligibility indication message containing the subscription information to the mobile switching center.
步驟 42, 所述移动交换中心仿真向所述归属位置寄存器返回资格 指示响应。 Step 42: The mobile switching center simulates returning an eligibility indication response to the home location register.
5. 根据权利要求 1或 2所述的预付费业务的计费方法， 其特征在于， 所述 步骤一中， 进一步包括： 所述移动交换中心仿真通过扩展 MAP 协议从 所述归属位置寄存器中获取所述签约信息的步骤， 具体为： The charging method of the prepaid service according to claim 1 or 2, wherein, in the step 1, the method further comprises: the mobile switching center emulation being obtained from the home location register by using an extended MAP protocol The step of signing the information is specifically:
步驟 51 , 所述移动交换中心仿真向所述归属位置寄存器发送位置 清求或业务申请或始呼请求或前 号码申请； 以及  Step 51: The mobile switching center simulates sending a location request or a service request or a call request or a pre-number application to the home location register;
步骤 52， 所述移动交换中心仿真通过扩展 MAP协议从所述归属位 置寄存器返回的位置请求响应或业务申请响应或始呼请求响应或前转号 码申请响应中获取所述签约信息。  Step 52: The mobile switching center simulates acquiring the subscription information by using a location request response or a service request response or an origin call request response or a forwarding number request response returned from the home location register by using an extended MAP protocol.
6. 根据权利要求 1或 2所述的预付费业务的计费方法， 其特征在于， 所述 步骤二中， 进一步包括： 所述预付费服务器对所述主叫用户终端鉴权和 余额审核的步據， 当所述主叫用户终端的用户为所述预付费服务器登记 的合法用户且所述主叫用户终端的余额足以发起所述呼叫时， 所迷预付 费服务器发送所述请求消息至所述移动交换中心仿真。 The charging method of the prepaid service according to claim 1 or 2, wherein the step 2 further comprises: the prepaid server authenticating the authentication and balance of the calling user terminal Steps, when the user of the calling user terminal is a legitimate user registered by the prepaid server and the balance of the calling user terminal is sufficient to initiate the call, the prepaid server sends the request message to the location The mobile switching center simulation.
7. —种预付费业务的计费系统， 其特征在于， 包括： 移动交换中心仿真、 归属位置寄存器、 以及预付费服务器， 其中：； 7. A charging system for a prepaid service, comprising: a mobile switching center emulation, a home location register, and a prepaid server, wherein:
所述移动交换中心仿真从所述归属位置寄存器中获取用户的签约 信息；，并才艮据所述签约信息将主叫用户终端的呼叫请求发送至所迷预付 费服务器；  The mobile switching center emulates the subscription information of the user from the home location register; and sends the call request of the calling user terminal to the prepaid fee server according to the subscription information;
所述预付费服务器发送请求消息至所述移动交换中心仿真 ,请求建 立到被叫用户终端的呼叫； 以及  The prepaid server sends a request message to the mobile switching center emulation to request to establish a call to the called user terminal;
所述预付费 艮务器在所述移动交换中心仿真建立到所述被叫用户 终端的呼叫接续并进入通话状态后开始实时计费。  The prepaid server starts real-time charging after the mobile switching center simulates establishing a call connection to the called user terminal and enters a call state.
8. 根据权利要求 7所述的预付费业务的计费系统， 其特征在于， '还包括： 媒体网关， 连接所述移动交换中心仿真， 用于对数据进行转换处理。 The charging system of the prepaid service according to claim 7, wherein the method further comprises: a media gateway, connected to the mobile switching center emulation, for converting data.
9. 根据权利要求 8所述的预付费业务的计费系统， 其特征在于， 所述移动 交换中心仿真与所述预付费服务器之间通讯采用会话发起协议， 以 IP方 式通讯； 所述移动交换中心仿真与所述归属位置寄存器之间通讯采用移 动应用部分协议； 所述移动交换中心仿真与所述媒体网关之间通讯直接 采用 H.248协议。 9. The charging system of the prepaid service according to claim 8, wherein the communication between the mobile switching center emulation and the prepaid server uses a session initiation protocol to communicate in IP mode; the mobile switching The communication between the central simulation and the home location register uses a mobile application part protocol; the communication between the mobile switching center emulation and the media gateway directly adopts the H.248 protocol.
0. 根据权利要求 7 - 9任一项所述的预付费业务的计费系统， 其特征在于， 所述签约信息包括： 所述预付费服务器的 IP地址和预付费用户的业务接 入码， 其中， 所述业务接入码用于携带预付费业务信息。 The charging system of the prepaid service according to any one of claims 7-9, wherein the subscription information comprises: an IP address of the prepaid server and a service access code of a prepaid user, The service access code is used to carry prepaid service information.
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