WO2011120264A1 - 一种实现语音呼叫视频化业务的系统和方法 - Google Patents

一种实现语音呼叫视频化业务的系统和方法 Download PDF

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Publication number
WO2011120264A1
WO2011120264A1 PCT/CN2010/074649 CN2010074649W WO2011120264A1 WO 2011120264 A1 WO2011120264 A1 WO 2011120264A1 CN 2010074649 W CN2010074649 W CN 2010074649W WO 2011120264 A1 WO2011120264 A1 WO 2011120264A1
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Prior art keywords
called
voice call
terminal
calling
video
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PCT/CN2010/074649
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English (en)
French (fr)
Inventor
李明
周富星
哈景楠
胡涌
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中兴通讯股份有限公司
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Publication of WO2011120264A1 publication Critical patent/WO2011120264A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a system and method for implementing a voice call video service. Background technique
  • the global 3G or higher version of the network has begun to take shape, and the high-bandwidth broadband of the 3G network has brought about the videoization, mediation, Internetization and mobileization of payment means.
  • the present invention provides a system and method for implementing a voice call video service, which is used to solve the problem that the voice call and the 3G user can only make a voice call when the voice user and the 3G user talk in the prior art, so that the video call usage range of the 3G user is reduced. Moreover, it is not conducive to cultivating the habit of 3G user video calls, and cannot fully utilize the resources of the existing network and the called terminal.
  • a system for implementing a voice call video service includes: a calling terminal, a calling switch, a called home location register HLR, a called switch, and a called terminal, and the system further includes: a voice call video platform, and The called terminal has registered a voice call video service in the voice call video platform and the called HLR;
  • the calling switch is configured to receive a voice call request initiated by the calling terminal, by using the called party After obtaining the MSRN of the called terminal and the registration service code, the HLR routes the current voice call request to the voice call video platform;
  • the voice call videotion platform is configured to initiate a video call request to the called terminal by using the called switch after receiving the voice call request; and after the session channel is established, send the video and the calling voice to the called Call the terminal and send the audio of the called terminal to the calling terminal.
  • the voice call videotion platform includes: a signaling access point, a service processor, a resource server, and a portal management website;
  • the signaling access point is used for forwarding signaling for processing a voice call video platform to interact with a primary or a called exchange;
  • the service processor is configured to manage resource information in the voice call videotion platform, and send a control command to the resource server after the session channel is established, to implement voice and video calls between the calling terminal and the called terminal. ;
  • the resource server is configured to store a video file acquired by the user through the portal management website, and send video data and calling voice to the called terminal according to the control instruction of the service processor, and the called terminal The audio data is sent to the calling terminal;
  • the portal management website is an interface platform for registering a voice call video service for a user, and is used for managing media resource information stored by the resource server, and provides services for self-service, previewing, and ordering media and setting rules for the user.
  • the voice call videotion platform further includes: a billing server, configured to obtain a bill from the service processor for use by the billing system.
  • the called terminal is further configured to apply for opening a voice call video service through the portal management website when the voice call videotion platform and the called HLR register a voice call video service;
  • the portal management website is further configured to submit the application to a service processor, where the service processor is further configured to save user registration information and synchronize user registration information to Called HLR.
  • the calling switch is further configured to: after receiving the MSRN of the called terminal and the registration service code by the called HLR, send the query routing information to the called HLR after receiving the voice call request initiated by the calling terminal;
  • the called HLR is configured to send PRN information to the called switch after receiving the query routing information
  • the called switch is further configured to allocate MSRN information, and return the allocated MSRN information to the called HLR;
  • the called HLR is further configured to send a response message carrying the MSRN and the registration service code to the calling switch.
  • the voice call request message routed by the calling switch carries the mobile station integrated service digital coded MSISDN of the calling terminal and the called terminal, and the MSRN of the called terminal.
  • the voice call videotion platform is further configured to: when the calling terminal or the called terminal hangs up, disconnect the established session channel, and end the call of the calling and called terminals.
  • a method for implementing a voice call video service includes the following steps:
  • Step 1 The calling terminal initiates a voice call request to the calling switch.
  • Step 2 The calling switch receives the voice call request, and after the obtained HLR acquires the MSRN of the called terminal of the registered voice call video service and the registration service code, routes the current voice call request to the voice call.
  • Video platform
  • Step 3 After receiving the voice call request, the voice call videotion platform initiates a video call request to the called terminal by using the called switch; and after the session channel is established, sending the video and the calling voice to the called Call the terminal and send the audio of the called terminal to the calling terminal.
  • the voice call request message routed by the calling switch carries the calling terminal, the MSISDN of the called terminal, and the MSRN of the called terminal.
  • the method also includes: When the calling terminal or the called terminal hangs up, the voice call videotion platform removes the established session channel.
  • the present invention has the following beneficial effects:
  • the method provided by the present invention enables a user who has signed a video call service, even if the calling terminal initiates an audio call, the called terminal can still enjoy the video call service, improve the user service experience, and can widely promote the video call service.
  • FIG. 1 is a schematic structural diagram of a system network of the present invention
  • FIG. 2 is a schematic structural diagram of a voice call video service platform according to the present invention.
  • FIG. 3 is a schematic diagram of a method for implementing a voice call video service according to the present invention
  • FIG. 4 is a flowchart of a method for implementing a voice call video service according to the present invention. detailed description
  • the present invention provides a system and method for implementing a voice call video service.
  • the method can be used to enable the called terminal to enjoy the video call when the calling party initiates a voice call when the calling terminal subscribes to the video call service and has the video call condition. .
  • FIG. 1 it is a schematic diagram of a system network structure according to the present invention, wherein a calling terminal UEA accesses a calling switch through a Base Transceiver Station (BTS) and a Base Station Controller (BSC).
  • BTS Base Transceiver Station
  • BSC Base Station Controller
  • Original Mobile Switch Center Server, The O-MSC Server and the Media Gateway (O-MGW) initiate a voice call to the called terminal UEB of the subscribed video call service and the voice call video service;
  • the calling switch uses a MAP (Mobile Application Part, MAP) message to query the home location register (HLR) of the called UEB to learn that the called terminal is registered with the voice call video service;
  • MAP Mobile Application Part, MAP
  • the calling switch routes the call to the voice call video platform, and the voice call video platform initiates a video call to the called UEB, and the call arrives at the called mobile switch center server (T-MSC Server) and the media gateway (Terminal Media Gateway). , T-MGW), the base station radio network controller (RNC) and the base station NODE B are called to the called party, and the session channel is established after the called party is connected, and the voice call is videoized.
  • the platform sends the pre-selected video and calling voice to the called UEB, sends the called voice extraction to the calling UEA, and the calling UEA and the called UEB make a call.
  • the structure diagram of the voice call video platform is as shown in FIG. 2, including: a signaling access point, a service processor, a resource server, and a portal management website.
  • the signaling access point is used to forward and process signaling messages between the voice call video platform and the core network, such as ISUP, BICC, or SIP.
  • the core network such as ISUP, BICC, or SIP.
  • the service processor is a service logic control center for the voice call video service, and is used for managing resource information in the voice call video platform, and after the session channel is established, sends a control command to the resource server to implement the calling terminal and the called party. Voice and video calls between terminals.
  • the resource information includes: setting and storing a play rule, selecting a play rule, storing and updating user information, and the like.
  • a resource server configured to store a video file acquired by the user through the portal management website, and send pre-selected video data and calling voice to the called terminal according to the control instruction of the service processor, and use the audio of the called terminal The data is sent to the calling terminal.
  • Portal management website an interface platform for users to register voice call video services, for management Information about the media resources stored by the resource server, including the network unified coding of the media resources, the physical storage location of the media resources, the codec information of the media, etc.; and provides self-service for the business users, previews and subscribes to the media, and sets rules and other services.
  • the foregoing service processor performs the function of configuring information to the user through an interface device, and implements a function of information interaction between the service processor and the user through the interface device.
  • Video media is required in the voice call video service platform.
  • the video media is usually produced by a special SP or CP.
  • the SP or CP also puts the finished video into the voice call video service platform by calling the upload interface provided by the interface machine.
  • the present invention is configured to perform charging management on video media information that is ordered by the user through the portal management website
  • the voice call video service platform further includes a billing server, which is used to periodically obtain from the service processor.
  • the bill is obtained by the billing system, and can be backed up or format converted according to the need of the dialog box.
  • the user applies for opening or canceling the voice call video service through the portal management website, and the portal management website submits the user's application to the service processor, and the service processor saves the user registration information and synchronizes the user registration information to the HLR.
  • Voice call video service users can also purchase their favorite video media through the portal management website, such as video weather forecast, MV and so on.
  • the portal management website submits the subscription request to the service processor, the service processor saves the user subscription information and generates a subscription CDR, and the CDR server periodically obtains the CDR from the service processor for the charging system to obtain.
  • the signaling access point and the core network perform signaling interaction, and the ISUP, BICC or SIP signaling message is converted into an internal message and submitted to the service processor, the service processor controls the call flow, and the signaling access point processes the service.
  • the call control message of the machine is converted into an ISUP, BICC or SIP signaling message and sent to the core network.
  • the service processor instructs the resource server to transmit the voice of the calling terminal and the video media mixed by the called terminal to the called terminal, and simultaneously extract and send the audio in the video media stream of the called terminal.
  • the audio call videotion function of the calling terminal and the called terminal is implemented.
  • FIG. 3 it is a schematic diagram of a method for implementing a voice call video service method provided by the present invention.
  • the called terminal provided in the method has registered voice on the voice call video platform and the called HLR.
  • the videoized service is called, wherein the called terminal is registered in the called HLR, preferably by synchronizing the voice call video service platform.
  • the method specifically includes the following steps:
  • Step S301 The calling terminal initiates a voice call request, and the call arrives at the calling exchange.
  • the calling switch queries the called home HLR for the MSRN (Mobile Station Roaming Number) and the registered service code information of the called terminal, and the called HLR returns. search result.
  • MSRN Mobile Station Roaming Number
  • Step S302 The calling switch routes the voice call request to the voice call video service platform.
  • the voice paging request message carries the MSRN of the called terminal and the MSISDN (Mobile Station Integrated Services Digital Number) of the calling and called terminals.
  • MSRN Mobile Station Integrated Services Digital Number
  • Step S303 The voice call video service platform initiates a video call request to the called terminal.
  • the voice call video service platform and the called user negotiate successfully, and an H.245 session channel is established.
  • Step S304 the voice call video service platform sends the 324M media package generated by the calling voice and the selected video media file to the called terminal, and performs a video call with the called terminal; and simultaneously puts the audio in the video media package of the called terminal. Partial analysis is sent to the calling terminal to realize the voice call video service of the calling audio and the called video.
  • the voice call video service platform is removed and the H.245 channel established by the called terminal is terminated.
  • the main call is called.
  • Step S401 The calling terminal dials the number of the called terminal, and sends a SETUP message to the calling switch 0-MSC.
  • Step S402 The calling switch sends an SRI message to the called HLR to query the called terminal information.
  • the user information includes: an MSRN of the called terminal and registered service code information of the registered voice call video service.
  • Step S403 The called HLR sends a PRN message to the called switch T-MSC Server where the called terminal is currently located, and seeks the MSRN.
  • Step S404 The called switch T-MSC allocates the MSRN, and returns a PRN_ACK message to the called HLR, where the message carries the MSRN of the called terminal.
  • Step S405 The called HLR returns an SRI_ACK message to the calling switch, where the message carries the MSRN of the called terminal and the voice call video service registration code.
  • Step S406 The calling switch routes the voice paging request to the voice call video platform.
  • the voice paging request carries the calling terminal, the MSISDN of the called terminal, and the MSRN of the called user.
  • Step S407 The voice call videotion platform upgrades the voice call initiated by the calling party to a video call, and initiates a video call to the called terminal by the called switch.
  • Step S408 The called party rings, and the ringing message arrives at the calling terminal via the voice call videotion platform and the calling exchange, and plays the voice ringback tone through the voice call video platform to the calling terminal.
  • Step S409 The called party picks up the phone, and the voice call video platform and the called terminal establish an H.245 channel.
  • Step S410 The voice call videotion platform sends the called response message to the calling side, and stops playing the ring back tone to the calling side.
  • Step S411 The voice call videotion platform obtains the video played by the called terminal according to the call information, and the calling terminal and the called terminal bridge the 4 bar to make a call.
  • the call of the calling terminal and the voice call video platform is voice, and the voice call video platform and the called terminal are video calls.
  • the voice call video platform sends the 324M media packet generated by the calling voice and the selected video to the called terminal, and performs a video call with the called terminal, and simultaneously parses the audio part of the video media packet of the called terminal to the main party.
  • the terminal is called to realize the voice call video service of the calling audio and the called video.
  • the voice call video platform removes the established H.245 channel between the called terminal and the calling party and the called party ends.
  • the method provided by the present invention enables a user who has signed a video call service, even if the calling terminal initiates an audio call, the called terminal can still enjoy the video call service, improve the user service experience, and can widely promote the video call service.
  • the spirit and scope of the invention Thus, it is intended that the present invention cover the modifications and modifications of the invention

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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  • Mobile Radio Communication Systems (AREA)

Description

一种实现语音呼叫视频化业务的系统和方法 技术领域
本发明涉及通信技术领域， 尤其涉及一种实现语音呼叫视频化业务的 系统和方法。 背景技术
当前全球范围内 3G或更高版本的网络已经初具规模， 3G网络的高带 宽带来了通信的视频化、 媒体化、 互联网化以及支付手段的移动化。
但是全球范围内， 语音用户的数量更为庞大， 在语音用户和 3G用户通 话时， 只能进行语音通话， 这使得 3G用户的视频通话使用范围缩小， 而且 不利于培养 3G用户视频通话的习惯，无法充分利用现有网络和被叫终端的 资源， 在主叫发起语音呼叫时， 让被叫仍然能够享受视频通话。 发明内容
本发明提供一种实现语音呼叫视频化业务的系统和方法， 用以解决现 有技术中存在的在语音用户和 3G 用户通话时， 只能进行语音通话， 使得 3G用户的视频通话使用范围缩小， 而且不利于培养 3G用户视频通话的习 惯， 无法充分利用现有网络和被叫终端的资源的问题。
为了解决上述问题， 本发明的技术方案是这样实现的：
一种实现语音呼叫视频化业务的系统， 包括： 主叫终端、 主叫交换机、 被叫归属位置寄存器 HLR、 被叫交换机以及被叫终端， 所述系统还包括： 语音呼叫视频化平台， 且所述被叫终端已在所述语音呼叫视频化平台以及 被叫 HLR中注册有语音呼叫视频化业务；
所述主叫交换机， 用于接收主叫终端发起的语音呼叫请求， 通过被叫 HLR获取被叫终端的 MSRN和注册业务码后 , 将当前语音呼叫请求路由至 语音呼叫视频化平台；
所述语音呼叫视频化平台， 用于在接收到语音呼叫请求后通过所述被 叫交换机向被叫终端发起视频呼叫请求； 并在会话通道建立后， 将视频和 主叫语音发送给所述被叫终端， 并将被叫终端的音频发送给主叫终端。
所述语音呼叫视频化平台包括： 信令接入点、 业务处理机、 资源服务 器和门户管理网站；
所述信令接入点， 用于转发处理语音呼叫视频化平台与主、 被叫交换 机间交互的信令；
所述业务处理机， 用于管理语音呼叫视频化平台中的资源信息， 并在 会话通道建立后向所述资源服务器下发控制指令， 实现主叫终端和被叫终 端之间的语音和视频通话；
所述资源服务器， 用于存储用户通过所述门户管理网站获取的视频文 件， 并基于所述业务处理机的控制指令， 将视频数据和主叫语音发送给被 叫终端， 并将被叫终端的音频数据发送给主叫终端；
所述门户管理网站， 为用户注册语音呼叫视频化业务的接口平台， 用 于管理所述资源服务器存储的媒体资源信息， 并为用户提供自助服务、 预 览并定购媒体和设置规则的业务。
所述语音呼叫视频化平台还包括： 话单服务器， 用于从业务处理机获 取话单， 供计费系统使用。
所述被叫终端， 还用于在所述语音呼叫视频化平台和被叫 HLR注册语 音呼叫视频化业务时， 通过所述门户管理网站申请开通语音呼叫视频化业 务；
相应的， 所述门户管理网站， 还用于将所述申请提交给业务处理机； 所述业务处理机， 还用于保存用户注册信息并将用户注册信息同步到 被叫 HLR。
所述主叫交换机，还用于在通过被叫 HLR获取被叫终端的 MSRN和注 册业务码时， 在接收到主叫终端发起的语音呼叫请求后， 向所述被叫 HLR 发送查询路由信息；
所述被叫 HLR, 用于在接收到查询路由信息后， 向所述被叫交换机发 送 PRN信息；
所述被叫交换机， 还用于分配 MSRN信息， 并将分配的 MSRN信息返 回给所述被叫 HLR;
所述被叫 HLR,还用于向主叫交换机发送携带有 MSRN和注册业务码 的响应消息。
所述主叫交换机路由的语音呼叫请求消息携带有所述主叫终端、 被叫 终端的移动站点综合服务数字编码 MSISDN和被叫终端的 MSRN。
所述语音呼叫视频化平台， 还用于在主叫终端或被叫终端挂机时， 拆 除建立的会话通道， 结束主被叫终端的通话。
一种实现语音呼叫视频化业务的方法， 包括以下步骤：
步骤 1、 主叫终端向主叫交换机发起语音呼叫请求；
步骤 2、 所述主叫交换机接收所述语音呼叫请求， 并通过被叫 HLR获 取到已注册语音呼叫视频化业务的被叫终端的 MSRN和注册业务码后， 将 当前语音呼叫请求路由到语音呼叫视频化平台；
步骤 3、所述语音呼叫视频化平台接收到语音呼叫请求后，通过所述被 叫交换机向被叫终端发起视频呼叫请求； 并在会话通道建立后， 将视频和 主叫语音发送给所述被叫终端， 并将被叫终端的音频发送给主叫终端。
所述主叫交换机路由的语音呼叫请求消息携带有所述主叫终端、 被叫 终端的 MSISDN和被叫终端的 MSRN。
该方法还包括： 当主叫终端或被叫终端挂机时 , 所述语音呼叫视频化平台拆除建立的 会话通道。
与现有技术相比， 本发明具有以下有益效果：
本发明提供的方法， 使签约了视频呼叫业务的用户， 即使主叫终端发 起的是音频呼叫， 被叫终端仍然可以享受视频呼叫业务， 提高了用户业务 体验， 且可广泛推广视频呼叫业务。 附图说明
图 1为本发明的系统网络结构示意图；
图 2为本发明中语音呼叫视频化业务平台的结构示意图；
图 3为本发明提供的实现语音呼叫视频化业务方法的原理示意图； 图 4为本发明提供的实现语音呼叫视频化业务方法的流程图。 具体实施方式
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进 行清楚、 完整地描述。
为了解决现有技术中存在的在语音用户和 3G用户通话时 ,只能进行语 音通话， 使得 3G用户的视频通话使用范围缩小， 而且不利于培养 3G用户 视频通话的习惯， 无法充分利用现有网络和被叫终端的资源的问题。 本发 明提供一种实现语音呼叫视频化业务的系统和方法。 釆用该方法， 使得当 主叫终端语音呼叫签约了视频通话业务且具备视频通话条件的用户时， 可 以实现当主叫发起语音通话情况下， 仍然使被叫终端可以享受到视频通话 的技术效果。
如图 1所示， 为本发明的系统网络结构示意图， 其中， 主叫终端 UEA 通过基站收发信台（Base Transceiver Station, BTS)和基站控制器 (Base Station Controller, BSC)接入主叫交换机 (Original Mobile Switch Center Server, O-MSC Server)和媒体网关 (Original Media Gateway, O-MGW), 向签约视频 通话业务以及语音呼叫视频化业务的被叫终端 UEB发起语音呼叫；
主叫交换机使用 MAP(Mobile Application Part, MAP)消息查询被叫 UEB归属的归属位置寄存器 （Home Location Register, HLR)获知被叫终端 注册了语音呼叫视频化业务；
主叫交换机把呼叫路由到语音呼叫视频化平台， 语音呼叫视频化平台 向被叫 UEB发起视频呼叫， 呼叫到达被叫交换机 (Terminal Mobile Switch Center Server , T-MSC Server)和媒体网关（Terminal Media Gateway , T-MGW),经过被叫位于的基站无线网络控制器（（Radio Network Controller, RNC)和基站 NODE B寻呼到被叫， 并在被叫接通后建立起会话通道， 语音 呼叫视频化平台将预先选定的视频和主叫语音发送给被叫 UEB、 将被叫语 音提取出发送给主叫 UEA, 主叫 UEA和被叫 UEB进行通话。
具体的， 语音呼叫视频化平台的结构图如图 2所示， 包括： 信令接入 点、 业务处理机、 资源服务器和门户管理网站。
其中， 信令接入点， 用于转发处理语音呼叫视频化平台和核心网之间 的信令消息， 如 ISUP、 BICC或者 SIP等。
业务处理机， 为语音呼叫视频化业务的业务逻辑控制中心， 用于管理 语音呼叫视频化平台中的资源信息， 并在会话通道建立后， 向资源服务器 发出控制指令， 实现主叫终端和被叫终端之间的语音和视频通话。 其中， 所述资源信息包括： 播放规则的设置和存储， 播放的规则的 选， 用户信 息的存储和更新等。
资源服务器， 用于存储用户通过门户管理网站获取的视频文件， 并基 于所述业务处理机的控制指令， 将预先选定的视频数据和主叫语音发送给 被叫终端， 将被叫终端的音频数据发送给主叫终端。
门户管理网站， 为用户注册语音呼叫视频化业务的接口平台， 用于管 理资源服务器存储的媒体资源的信息， 包括媒体资源的网络统一编码、 媒 体资源的物理存储位置、 媒体的编解码信息等； 并为业务用户提供自助服 务， 预览并订购媒体， 设置规则等业务。
具体的， 上述业务处理机是通过一接口机完成对用户进行配置信息的 功能的， 并通过该接口机实现业务处理机与用户进行信息交互的功能。
并且语音呼叫视频化业务平台中需要视频媒体， 视频媒体一般由专门 的 SP或者 CP制作， SP或 CP也是通过调用接口机提供的上传接口把制作 完成的视频放到语音呼叫视频化业务平台中。
进一步的， 本发明为了对用户通过门户管理网站定购的视频媒体信息 进行计费管理， 所述语音呼叫视频化业务平台还包括一话单服务器， 该话 单服务器， 用于定时从业务处理机获取话单， 供计费系统获取， 并可以根 据需要对话单进行备份或者格式转换。
基于上述的功能描述， 下面对语音呼叫视频化平台在实现语音呼叫视 频化业务时各功能模块间的协作流程进行阐述：
用户通过门户管理网站申请开通或注销语音呼叫视频化业务， 门户管 理网站把用户的申请提交给业务处理机， 业务处理机保存用户注册信息并 把用户注册信息同步到 HLR。
语音呼叫视频化业务用户还可以通过门户管理网站购买其喜欢的视频 媒体， 比如视频天气预报， MV等。 门户管理网站会把订购请求提交给业务 处理机， 业务处理机保存用户订购信息并生成订购话单， 话单服务器定时 从业务处理机获取话单供计费系统获取。
呼叫时， 信令接入点和核心网进行信令交互， 把 ISUP、 BICC或者 SIP 信令消息转换成内部消息提交给业务处理机， 业务处理机控制呼叫流程， 信令接入点把业务处理机的呼叫控制消息转换成 ISUP、 BICC或者 SIP信 令消息发送给核心网。 业务处理机在处理呼叫过程中， 指示资源服务器把主叫终端的语音和 被叫终端预设的视频媒体混成视频媒体流发送给被叫终端， 同时把被叫终 端视频媒体流中音频提取出发送给主叫终端， 实现主叫终端和被叫终端的 音频呼叫视频化功能。
如图 3 所示， 为本发明提供的实现语音呼叫视频化业务方法的原理示 意图， 值得注意的是， 该方法中所提供的被叫终端已在语音呼叫视频化平 台和被叫 HLR 注册了语音呼叫视频化业务， 其中， 被叫终端在被叫 HLR 中注册， 优选地通过语音呼叫视频化业务平台同步来实现。
所述方法具体包括以下步骤：
步骤 S301、 主叫终端发起语音呼叫请求， 呼叫到达主叫交换机， 主叫 交换机向被叫归属 HLR查询被叫终端的 MSRN ( Mobile Station Roaming Number, 漫游号码）和注册业务码信息， 被叫 HLR返回查询结果。
步骤 S302、 主叫交换机把语音呼叫请求路由到语音呼叫视频化业务平 台。 其中语音寻呼请求消息中携带有被叫终端的 MSRN以及主叫、 被叫终 端的 MSISDN ( Mobile Station Integrated Services Digital Number, 移动站点 综合服务数字编码）。
步骤 S303、 语音呼叫视频化业务平台向被叫终端发起视频呼叫请求， 当被叫终端应答时， 语音呼叫视频化业务平台和被叫用户协商成功， 建立 起 H.245会话通道。
步骤 S304、 语音呼叫视频化业务平台把主叫语音和平台选中的视频媒 体文件生成 324M媒体包发送给被叫终端 ,和被叫终端进行视频通话； 同时 把被叫终端的视频媒体包中的音频部分解析出发送给主叫终端， 从而实现 主叫音频和被叫视频的语音呼叫视频化业务。
更进一步的， 本发明提供的方法中， 当主叫或被叫终端任何一方挂机 时， 语音呼叫视频化业务平台拆除和被叫终端建立的 H.245通道， 并结束 主被叫通话。
基于上述的原理表述， 下面详细介绍本发明的语音呼叫视频化业务方 法的具体流程， 如图 4所示， 具体包括以下步骤：
步骤 S401、 主叫终端拨打被叫终端的号码， 向主叫交换机 0-MSC发 送 SETUP消息。
步骤 S402、 主叫交换机向被叫 HLR发 SRI消息， 查询被叫终端信息。 该用户信息包括： 被叫终端的 MSRN和注册语音呼叫视频化业务的注册业 务码信息。
步骤 S403、被叫 HLR向被叫终端当前所在的被叫交换机 T-MSC Server 发 PRN消息， 寻求 MSRN。
步骤 S404、 被叫交换机 T-MSC 分配 MSRN , 向被叫 HLR 返回 PRN_ACK消息， 该消息中携带有被叫终端的 MSRN。
步骤 S405、 被叫 HLR向主叫交换机返回 SRI_ACK消息， 该消息中携 带有被叫终端的 MSRN和语音呼叫视频化业务注册码。
步骤 S406、 主叫交换机把语音寻呼请求路由至语音呼叫视频化平台。 其中， 语音寻呼请求携带主叫终端、 被叫终端的 MSISDN以及被叫用 户的 MSRN。
步骤 S407、 语音呼叫视频化平台把主叫发起的语音呼叫升级为视频呼 叫， 通过被叫交换机向被叫终端发起视频呼叫。
步骤 S408、 被叫振铃， 振铃消息经由语音呼叫视频化平台和主叫交换 机到达主叫终端， 并通过语音呼叫视频化平台为主叫终端播放语音回铃音。
步骤 S409、 被叫摘机， 语音呼叫视频化平台和被叫终端建立 H.245通 道。
步骤 S410、 语音呼叫视频化平台把被叫应答消息发送到主叫侧， 并停 止向主叫侧播放回铃音。 步骤 S411、 语音呼叫视频化平台根据呼叫信息获得本次为被叫终端播 放的视频， 并 4巴主叫终端和被叫终端桥接进行通话。
其中， 主叫终端和语音呼叫视频化平台这一段呼叫为语音， 语音呼叫 视频化平台和被叫终端这一段则为视频呼叫。 语音呼叫视频化平台把主叫 语音和平台选中的视频生成 324M媒体包发送给被叫终端 ,和被叫终端进行 视频通话， 同时把被叫终端的视频媒体包中的音频部分解析出发送给主叫 终端， 从而实现主叫音频和被叫视频的语音呼叫视频化业务。
该方法中， 当主叫终端或被叫终端中任何一方挂机时， 语音呼叫视频 化平台拆除和被叫终端间的建立的 H.245通道， 主被叫通话结束。
本发明提供的方法， 使签约了视频呼叫业务的用户， 即使主叫终端发 起的是音频呼叫， 被叫终端仍然可以享受视频呼叫业务， 提高了用户业务 体验， 且可广泛推广视频呼叫业务。 本发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权 利要求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在 内。

Claims

权利要求书
1、 一种实现语音呼叫视频化业务的系统， 包括： 主叫终端、 主叫交换 机、 被叫归属位置寄存器 HLR、 被叫交换机以及被叫终端， 其特征在于， 所述系统还包括： 语音呼叫视频化平台， 且所述被叫终端已在所述语音呼 叫视频化平台以及被叫 HLR中注册有语音呼叫视频化业务；
所述主叫交换机， 用于接收主叫终端发起的语音呼叫请求， 通过被叫 HLR获取被叫终端的 MSRN和注册业务码后， 将当前语音呼叫请求路由至 语音呼叫视频化平台；
所述语音呼叫视频化平台， 用于在接收到语音呼叫请求后通过所述被 叫交换机向被叫终端发起视频呼叫请求； 并在会话通道建立后， 将视频和 主叫语音发送给所述被叫终端， 并将被叫终端的音频发送给主叫终端。
2、 如权利要求 1所述的系统， 其特征在于， 所述语音呼叫视频化平台 包括： 信令接入点、 业务处理机、 资源服务器和门户管理网站；
所述信令接入点， 用于转发处理语音呼叫视频化平台与主、 被叫交换 机间交互的信令；
所述业务处理机， 用于管理语音呼叫视频化平台中的资源信息， 并在 会话通道建立后向所述资源服务器下发控制指令， 实现主叫终端和被叫终 端之间的语音和视频通话；
所述资源服务器， 用于存储用户通过所述门户管理网站获取的视频文 件， 并基于所述业务处理机的控制指令， 将视频数据和主叫语音发送给被 叫终端， 并将被叫终端的音频数据发送给主叫终端；
所述门户管理网站， 为用户注册语音呼叫视频化业务的接口平台， 用 于管理所述资源服务器存储的媒体资源信息， 并为用户提供自助服务、 预 览并定购媒体和设置规则的业务。
3、 如权利要求 2所述的系统， 其特征在于， 所述语音呼叫视频化平台 还包括： 话单服务器， 用于从业务处理机获取话单， 供计费系统使用。
4、 如权利要求 2所述的系统， 其特征在于， 所述被叫终端， 还用于在 所述语音呼叫视频化平台和被叫 HLR注册语音呼叫视频化业务时， 通过所 述门户管理网站申请开通语音呼叫视频化业务；
相应的， 所述门户管理网站， 还用于将所述申请提交给业务处理机； 所述业务处理机， 还用于保存用户注册信息并将用户注册信息同步到 被叫 HLR。
5、 如权利要求 1或 2所述的系统， 其特征在于， 所述主叫交换机， 还 用于在通过被叫 HLR获取被叫终端的 MSRN和注册业务码时，在接收到主 叫终端发起的语音呼叫请求后， 向所述被叫 HLR发送查询路由信息；
所述被叫 HLR, 用于在接收到查询路由信息后， 向所述被叫交换机发 送 PRN信息；
所述被叫交换机， 还用于分配 MSRN信息， 并将分配的 MSRN信息返 回给所述被叫 HLR;
所述被叫 HLR,还用于向主叫交换机发送携带有 MSRN和注册业务码 的响应消息。
6、 如权利要求 1或 2所述的系统， 其特征在于， 所述主叫交换机路由 的语音呼叫请求消息携带有所述主叫终端、 被叫终端的移动站点综合服务 数字编码 MSISDN和被叫终端的 MSRN。
7、 如权利要求 1或 2所述的系统， 其特征在于，
所述语音呼叫视频化平台， 还用于在主叫终端或被叫终端挂机时， 拆 除建立的会话通道， 结束主被叫终端的通话。
8、一种实现语音呼叫视频化业务的方法，其特征在于， 包括以下步骤： 步骤 1、 主叫终端向主叫交换机发起语音呼叫请求；
步骤 2、 所述主叫交换机接收所述语音呼叫请求， 并通过被叫 HLR获 取到已注册语音呼叫视频化业务的被叫终端的 MSRN和注册业务码后 , 将 当前语音呼叫请求路由到语音呼叫视频化平台；
步骤 3、所述语音呼叫视频化平台接收到语音呼叫请求后，通过所述被 叫交换机向被叫终端发起视频呼叫请求； 并在会话通道建立后， 将视频和 主叫语音发送给所述被叫终端， 并将被叫终端的音频发送给主叫终端。
9、 如权利要求 8所述的方法， 其特征在于， 所述主叫交换机路由的语 音呼叫请求消息携带有所述主叫终端、 被叫终端的 MSISDN和被叫终端的 MSRN。
10、 如权利要求 8或 9所述的方法， 其特征在于， 该方法还包括： 当主叫终端或被叫终端挂机时， 所述语音呼叫视频化平台拆除建立的 会话通道。
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