WO2007137470A1 - Procédé et système de remplacement de flux multimédia en cours de session de terminal - Google Patents

Procédé et système de remplacement de flux multimédia en cours de session de terminal Download PDF

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Publication number
WO2007137470A1
WO2007137470A1 PCT/CN2007/000372 CN2007000372W WO2007137470A1 WO 2007137470 A1 WO2007137470 A1 WO 2007137470A1 CN 2007000372 W CN2007000372 W CN 2007000372W WO 2007137470 A1 WO2007137470 A1 WO 2007137470A1
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WO
WIPO (PCT)
Prior art keywords
replacement
media stream
terminal
sent
media
Prior art date
Application number
PCT/CN2007/000372
Other languages
English (en)
French (fr)
Inventor
Jian Yang
Original Assignee
Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to CN200780000298.4A priority Critical patent/CN101317363B/zh
Publication of WO2007137470A1 publication Critical patent/WO2007137470A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/23424—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving splicing one content stream with another content stream, e.g. for inserting or substituting an advertisement
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/613—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for the control of the source by the destination
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/70—Media network packetisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/2368—Multiplexing of audio and video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4341—Demultiplexing of audio and video streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44016—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving splicing one content stream with another content stream, e.g. for substituting a video clip
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
    • H04N21/4788—Supplemental services, e.g. displaying phone caller identification, shopping application communicating with other users, e.g. chatting

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a media stream replacement method and system during a terminal call. Background technique
  • Videophones use communication lines to combine voice, image, data and other information for long-distance transmission, so that people can hear each other's voices while they are communicating in different places, and they can see each other's images and enhance the reality of communication.
  • Feeling, intimacy and presence It applies not only to family life, but also can be widely used in many areas of the business activities in different sectors, distance learning, security monitoring, hospital care, medical diagnosis, and thus have broad market prospects 0
  • Mobile videophone service based on visual mobile terminal is a point-to-point communication service that can simultaneously utilize audio and video as defined in Universal Mobile Telecommunication System (UMTS), which can be used in two visual mobile terminals. In both directions, real-time communication of audio and video is realized between the visual mobile terminal and the visual fixed terminal or between the visual mobile terminal and the PC. Unlike traditional mobile phone services, mobile videophone services are a test for system providers and mobile network operators due to bandwidth, cost, equipment and service constraints.
  • UMTS Universal Mobile Telecommunication System
  • 3G networks have not yet begun large-scale commercial deployment of videophone services, people's recognition and expectations for mobile videophone services are high, and mobile videophone services will become the driving force for the development of 3G networks.
  • the function of using a local audio or video file of a terminal to replace its own voice or picture during a call has been implemented, and the function is applied to a party or a multi-party call, so that the visible mobile terminal participating in the call
  • the sound and/or picture can be replaced with pre-stored audio and/or video media streams as needed, and sent to other call participating terminals.
  • Other call participating terminals can receive multimedia such as replaced audio and/or video. information.
  • Replacing media streams in such applications is provided by the visual mobile terminal that initiates the media stream replacement, and thus has limitations such as storage capacity limitations, selectivity, and the like. Since the replacement process does not require server participation, the operator cannot perform the charging service to implement the application. Summary of the invention
  • One or more embodiments of the present invention provide a media stream replacement method and system during a terminal call, which can replace its own voice and/or picture with its stored audio and/or video files.
  • the embodiment of the invention provides a media stream replacement method during a terminal call, which includes the following steps:
  • the communication server receives the media stream replacement request sent by the terminal during the call; and obtains the corresponding replacement media source from the multimedia server according to the replacement media source identifier carried in the media stream replacement request;
  • An embodiment of the present invention provides a media stream replacement system, including:
  • a multimedia server configured to provide a replacement media source for the terminal
  • a communication server configured to receive a media stream replacement request sent by the terminal during the call, obtain a corresponding replacement media source from the multimedia server according to the replacement media source identifier carried in the request, and use the replacement media source to send the replacement initiator terminal The media stream is replaced.
  • the embodiment of the invention provides a communication server, including:
  • the switching unit is configured to receive and forward the media stream sent by the terminal
  • the interoperation gateway is configured to receive the media stream sent by the terminal forwarded by the switching unit
  • the switching unit is further configured to receive a media stream replacement request sent by the terminal, and send the media stream replacement request to the interoperation gateway, where the interoperation gateway sends the The media stream replacement request acquires a corresponding replacement media source from the multimedia server, and sends the replacement media stream to the switching unit, where the switching unit replaces the media stream sent by the terminal with the replacement media stream to send a call to the call Participate in the terminal. .
  • An embodiment of the present invention provides another communication server, including:
  • the interoperation gateway receives a body stream sent by the terminal forwarded by the switching unit, and performs transmission processing, and then sends the multi-point control unit And receiving a media stream sent by the converted processing terminal sent by the interoperation gateway;
  • the switching unit is further configured to receive a replacement request sent by the media stream sent by the terminal, and send the request to the multipoint control unit by using the interoperation gateway, where the multipoint control unit is based on the media sent by the terminal.
  • the stream replacement request acquires a corresponding replacement media source from the multimedia server, and replaces the media stream sent by the terminal with the replacement media source to the call participating terminal.
  • An embodiment of the present invention provides a multimedia terminal, including: a media stream requesting unit, configured to send a media stream replacement request;
  • a receiving unit configured to receive a replaced media stream sent by the server
  • an output unit configured to output the replaced media stream received by the receiving unit.
  • the visual terminal in the process of performing a two-party call or a multi-party call, can use the multimedia server to provide a replacement media source to implement other terminals participating in the video call without interrupting the current call connection.
  • FIG. 1 is a block diagram showing main components of a system in an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for replacing a media stream in a call process of a terminal according to an embodiment of the present invention
  • FIG. 3 is a structural block diagram of a media stream replacement system according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a method for replacing a media stream in an embodiment of the present invention
  • FIG. 5 is a structural block diagram of a media stream replacement system according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of a multimedia terminal in an embodiment of the present invention. detailed description
  • a multimedia server for storing a replacement media source when a multimedia server for storing a replacement media source is set on the network side, when the terminal issues a media stream replacement request, the corresponding replacement media source is obtained from the multimedia server, and the replacement media source is used to The media stream sent by the terminal is replaced. It is not limited by the storage capacity of the terminal itself, and has a rich media source to choose from, which can further meet the different needs of users.
  • a structural block diagram of a media stream replacement system mainly includes a communication server 10 and a multimedia server 20, wherein the specific functions of each component are as follows:
  • the communication server 10 is configured to receive a terminal during a call.
  • the media stream replacement request, the corresponding replacement media source is obtained from the multimedia server 20 according to the replacement media source identifier carried in the request, and the media stream sent by the replacement originating terminal is replaced by the replacement media source;
  • the multimedia server 20 is connected to the communication server 10 for storing and providing a replacement media source.
  • an implementation process of a media stream replacement method in a terminal call process includes the following steps:
  • Step S10 The mobile terminal establishes a video call between two or more parties through the communication server.
  • Step S30 The communication server obtains a corresponding replacement source source from the multimedia server according to the replacement media source identifier carried in the media stream replacement request, and uses the replacement media source to replace the media stream sent by the terminal.
  • the communication server replaces the media stream sent by the terminal by using the obtained replacement media source in two ways:
  • the first way is: the communication server simultaneously replaces the audio and video media streams sent by the terminal by using the replacement media source obtained from the multimedia server;
  • the second way is: The communication server replaces the corresponding part in the media stream sent by the terminal according to the type of the replacement media source obtained from the multimedia server.
  • Step S40 The communication server sends the replaced media stream to all the call participating terminals, or all the call participating terminals except the replacement originating terminal.
  • the media stream replacement system in the call mainly includes the communication server 30 and the multimedia server 40, wherein the specific functions of each component are as follows:
  • the communication server 30 is configured to receive a media stream replacement request sent by the terminal during the video call, and obtain a replacement media source that is obtained from the multimedia server 40 according to the replacement media source identifier carried in the request, and replace the replacement media source with the replacement media source pair.
  • the media stream sent by the initiating terminal is replaced; where the communication server 30 specifically includes:
  • the interoperation gateway 301 is configured to obtain a corresponding replacement media source from the multimedia server according to the media stream replacement request sent by the terminal, convert the obtained replacement media source into circuit domain data, and perform corresponding control protocol and data format conversion. After being sent to the switching unit 302;
  • the switching unit 302 is configured to send the media stream and the media stream replacement request sent by the terminal to the video interoperation gateway 301, and receive the replaced media stream sent by the video interoperation gateway 301, and send the replaced media stream to all the calls. Participating terminals, or all call participating terminals except the replacement originating terminal.
  • the multimedia server 40 is connected to the communication server 30 for storing and providing a replacement media source.
  • a process flow diagram of a media stream replacement method in a call which mainly includes the steps of:
  • Step S100 Establish a visual call between the two visual mobile terminals through the communication server.
  • Step S101 Any one of the mobile terminals participating in the video call is connected to the communication service by pressing a button The server sends an information code that initiates the media stream replacement service, such as "186#*#".
  • Step S102 After receiving the information code sent by the terminal, the video interoperation gateway in the communication server verifies whether the code is an information code for starting the media stream replacement service. If yes, step S104 is performed, otherwise, step S103 is performed.
  • Step S103 The video interoperation gateway performs other corresponding processing processes according to the information code type. '
  • Step S104 The video interoperation gateway in the communication server connects to the multimedia server, converts the downlink media stream of the multimedia server into circuit domain data, and transmits the data to the terminal that initiates the replacement service through the switching unit, where the terminal receives the multimedia server.
  • the replacement operation navigation media stream the terminal performs a replacement media source selection operation by using the navigation media stream, and sends a media stream replacement request to the multimedia server by using the communication server, where the request carries the replacement media source identifier selected by the user.
  • Step S105 After receiving the media stream replacement request sent by the terminal, the multimedia server queries the corresponding replacement media source according to the replacement media source identifier carried in the clearing, and sends the queried replacement media source to the video interoperation gateway;
  • the replacement media source stored in the multimedia server is an audio media stream, or a video media stream, or an audio + video media stream.
  • Step S106 The video interoperation gateway in the communication server converts the replacement media source sent by the multimedia server into circuit domain data, and performs corresponding control protocol and data format conversion, thereby replacing the video sent by the replacement request originating terminal and/or Audio media stream.
  • the video interoperation gateway replaces the media stream sent by the terminal by using the obtained replacement media source in two ways:
  • the first way is: the video interoperation gateway replaces the audio and video media streams sent by the terminal at the same time by using the replacement media source obtained from the multimedia server;
  • the second way is: The video interoperation gateway replaces the corresponding part in the media stream sent by the terminal according to the type of the replacement media source obtained from the multimedia server.
  • Step S107 The video interoperation gateway sends the converted media stream and the control flow to the switching unit, and the switching unit replaces the media stream and sends the media stream to the video call terminal, or only to the video call peer. ;
  • the switching unit sends the replaced media stream to the video calling terminal, both terminals of the video call can receive the replaced media stream; and when the switching unit sends the replaced media stream only to the video call pair In the end, the replacement initiator terminal receives the audio and video media stream sent by the peer end, or receives the replacement operation navigation media stream sent by the multimedia server.
  • the video interoperation gateway replaces the media stream sent by the terminal in the first manner in the foregoing step S106, the terminal receives only the replaced media stream;
  • the video interoperation gateway in the above step S106 replaces the media stream sent by the terminal in the second manner
  • the terminal receives the replacement media in the form of audio + video.
  • the terminal receives the replacement media stream in audio form and the video media stream sent by the peer end; if the replacement media source is a media stream in the form of video, the terminal receives The replacement media stream in the form of video and the audio media stream sent from the peer end.
  • any one of the two parties of the call can cancel the media stream replacement during the two-party call by sending a media stream replacement abort request to the video interoperation gateway.
  • the media stream replacement system for multi-party call of the visual terminal in the embodiment of the present invention mainly includes a videophone communication server 50 and a multimedia server 60, wherein the specific functions of each component are as follows:
  • the videophone communication server 50 is configured to receive a media stream replacement request sent by the terminal during the video call, and obtain a corresponding replacement media source from the multimedia server 60 according to the replacement media source identifier carried in the request, and use the replacement media source.
  • the replacement of the media stream sent by the initiating terminal is replaced; wherein the video telephony communication server 50 specifically includes:
  • a multi-point control unit 501 configured to control the multi-party video call, and obtain a corresponding replacement media source from the multimedia server according to the media stream replacement request sent by the terminal, thereby replacing the media stream sent by the terminal;
  • the video interoperation gateway 502 is configured to convert the media stream sent by the terminal into packet domain data and send it to the multipoint control unit 501, and receive the replaced media stream from the multipoint control unit 501 to convert it into circuit domain data;
  • the unit 503 is configured to send a media stream and a media stream replacement request sent by the terminal to the video interoperation gateway 502, and receive the replaced media stream sent by the video interoperation gateway 502.
  • the replaced media stream is sent to all the call participating terminals, or all the call participating terminals except the replacement originating terminal.
  • a multimedia server 60 is coupled to the video telephony communication server 50 for storing and providing a replacement media source.
  • the switching unit described in other embodiments of the present invention may not be limited to a CS domain switching unit, but may also be an IMS domain switching unit or other switching unit.
  • the media stream replacement method includes the steps:
  • Step S200 The plurality of visual terminals establish a multi-party video call under the control of a multi-point control unit in the videophone communication server.
  • Step S201 Any one of the terminals participating in the video call having the right to initiate media stream replacement sends a message code for starting the media stream replacement service to the videophone communication server by using a button, for example, "1 *#,.
  • Step S202 After receiving the information code sent by the terminal, the multipoint control unit in the videophone communication server verifies whether the code is an information code for starting the media stream replacement service, and if yes, executing step S204, otherwise, executing step S203.
  • Step S203 The multipoint control unit performs other corresponding processing processes according to the information code type.
  • Step S204 The multipoint control unit determines whether the media stream replacement is currently being implemented. If yes, step S205 is performed; otherwise, step S207 is performed.
  • Step S205 The multipoint control unit determines whether the priority of the terminal that issues the replacement service initiation request is higher than the priority of the initiating terminal that is currently being replaced by the media stream, and if so, the multipoint control unit suspends the media stream replacement currently being implemented. Step S207 is performed, otherwise, step S206 is performed.
  • Step S206 The multipoint control unit rejects the media stream replacement service initiation request sent by the terminal by the switching unit, and returns to the terminal the prompt information of the media stream replacement initiated by the other higher priority terminal.
  • Step S207 the multi-point control unit turns on the multimedia server, and the video interoperation gateway will be more
  • the downlink media stream of the media server is converted into the circuit domain data, it is transmitted to the terminal that initiates the replacement service by the switching unit, and the terminal receives the replacement operation navigation media stream provided by the multimedia server, and the terminal replaces the media source selection operation by using the navigation media stream.
  • Step S208 After receiving the media stream replacement request sent by the terminal, the multimedia server queries the corresponding replacement media source according to the replacement media source identifier carried in the request, and sends the queried replacement media source to the multipoint control unit.
  • the replacement media source stored in the multimedia server is an audio media stream, or a video media stream, or an audio + video media stream.
  • Step S209 The multipoint control unit replaces the video and/or audio media stream sent by the replacement request originating terminal by using the replacement media source sent by the multimedia server.
  • the manner in which the multi-point control unit replaces the media stream sent by the terminal with the obtained replacement media source is the same as that described in step S106 in the foregoing embodiment, and details are not described herein.
  • Step S210 The multipoint control unit sends the replaced media stream to the video interoperation gateway, and the replaced media stream is converted into circuit domain data by the video and sent to the switching unit, and the replaced media stream is simultaneously sent by the switching unit. All terminals participating in the video call, or a video call participating terminal other than the replacement originating terminal;
  • the switching unit When the switching unit simultaneously sends the replaced media stream to all the terminals participating in the video call, all the terminals participating in the video call can receive the replaced media stream; and when the switching unit sends the replaced media stream to In addition to replacing the video call participating terminal other than the originating terminal, the replacement initiator terminal receives the received operation navigation media stream sent by the multimedia server.
  • the embodiment of the present invention further provides a multimedia terminal.
  • the multimedia terminal includes: a media stream requesting unit, configured to send a media stream replacement request, and a receiving unit, configured to receive the replaced media stream sent by the server; a unit, configured to output the replaced media stream received by the receiving unit.
  • the media stream requesting unit further includes: a user input unit, configured to receive a user instruction, and a media stream replacement requesting production unit, configured to generate a media stream replacement request according to the user instruction,
  • the sending unit sends the media stream replacement request to the network side.
  • the media stream requesting unit further includes a replacement media source selecting unit that selects a replacement media source according to the replacement operation navigation media stream provided by the network side.
  • the embodiment provided by the present invention enables the visual terminal to use the multimedia server to provide a replacement media source to implement the alternative terminal on-demand video call without interrupting the current call connection during the two-party or multi-party call. Replacing the media source of its own audio and/or video, thus providing operators with a new value-added service, bringing new business revenue to operators.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Marketing (AREA)
  • General Business, Economics & Management (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Description

终端通话过程中的媒体流替换方法及系统 本申请要求于 2006 年 5 月 26 日提交中国专利局、 申请号为 200610080978.9,发明名称为 "终端通话过程中的媒体流替换方法及系统" 的中国专利申请的优先权， 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信技术领域， 尤其涉及一种终端通话过程中的媒体流替 换方法及系统。 背景技术
随着 3G技术和产品的不断成熟， 3G网络的部署和服务在全球范围内 有了很大的增长。移动可视电话业务作为一种具有完全 3G通信业务特征的 高级业务， 正随着 3G业务的来临而越来越近地进入现实。
随着通信、 计算机、 语音和视频编解码技术的不断发展， 可视电话得 到了迅速发展。 可视电话利用通信线路把语音、 图像、 数据等信息综合在 一起进行远距离传输， 使人们在进行异地交流的时候既可以听到对方的声 音， 又可以看到对方的图像， 增强交流的真实感、 亲切感和临场感。 它不 仅适用于家庭生活， 而且还可以广泛应用于各项商务活动、 远程教学、 安 全监控、 医院护理、 医疗诊断等不同行业的多种领域， 因而有着广阔的市 场前景 0
基于可视移动终端的移动可视电话业务是在通用移动通信系统 ( UMTS, Universal mobile telecommunication system ) 中定义的一种可以 同时利用音频和视频的点对点通信业务， 可以在两个可视移动终端之间， 可视移动终端和可视固定终端之间或者可视移动终端与 PC机之间实现音 频和视频的双向实时交流。与以往传统的移动电话业务不同，由于受带宽、 成本、 设备和服务的限制， 移动可视电话业务的开展对系统提供商、 移动 网絡运营商来说都是很大的考验。
目前， 虽然 3G网絡还没有开始大规模的商用部署可视电话业务，但是 人们对移动可视电话业务的认可程度和期望值很高 , 移动可视电话业务将 会成为推动 3G网络发展的源动力。 目前， 视移动终端在通话过程中使用终端本地的音频或视频文件来 替代自己的声音或画面的功能已经实现， 将这种功能应用在^方或多方通 话中，使得参与通话的可视移动终端可根据需要将自己的声音和 /或画面用 预先存储的音频和 /或视频媒体流进行替换，发送给其他通话参与终端，其 他通话参与终端即可收到替换后的音频和 /或视频等多媒体信息。在这种应 用中替换媒体流是由发起媒体流替换的可视移动终端自己提供的， 因此存 在局限性， 如存储容量的限制、 可选择性等。 由于替换过程无需服务器参 与， 因此运营商无法开展实现该应用的收费业务。 发明内容
本发明的一个或多个实施例中提供一种终端通话过程中的媒体流替 换方法及系统，可利用自身存储的音频和 /或视频文件来替换自己的声音和 /或画面。
本发明实施例提供一种终端通话过程中的媒体流替换方法， 包括步 驟：
通信服务器接收终端在通话过程中发出的媒体流替换请求； 根据所述媒体流替换请求中携带的替换媒体源标识从多媒体服务器 中获取相应的替换媒体源；
利用所述替换媒体源对所述媒体流替换请求发起终端发出的媒体流进行 替换。
本发明实施例提供一种媒体流替换系统， 包括：
多媒体服务器， 用于为终端提供替换媒体源；
通信服务器， 用于接收终端在通话过程中发出的媒体流替换请求， 根 据所述请求中携带的替换媒体源标识从多媒体服务器中获取相应的替换 媒体源， 利用该替换媒体源对替换发起终端发出的媒体流进行替换。
本发明实施例提供一种通信服务器， 包括：
交换单元， 用于接收将终端发出的媒体流并进行转发； 互操作网关， 用于接收所述交换单元转发的终端发出的媒体流;
所述交换单元还用于接收终端发出的媒体流替换请求并将所述媒体 流替换请求发送给所述互操作网关， 所述互操作网关根据所述终端发出的 媒体流替换请求从多媒体服务器中获取相应的替换媒体源， 并将所述替换 媒体流发送给所述交换单元， 所述交换单元用所述替换媒体流替换所述终 端发出的媒体流发送给通话参与终端。。
本发明实施例提供另一种通信服务器， 包括：
交换单元 , 用于接收终端发出的媒体流及媒体流替换请求发进行转 发； 互操作网关， 接收所述交换单元转发的终端发出的某体流， 并作转换 处理后予以发送； 多点控制单元， 用于接收所述互操作网关发送的经转换 处理后的终端发出的媒体流；
所述交换单元还用于接收终端发出的媒体流发出的替换请求并将所 述请求通过所述互操作网关发送给所述多点控制单元， 所述多点控制单元 根据所述终端发出的媒体流替换请求从多媒体服务器中获取相应的替换 媒体源， 以所述替换媒体源替换终端发出的媒体流发送给通话参与终端。
本发明实施例提供一种多媒体终端， 包括： 媒体流请求单元， 用于发 送媒体流替换请求；
接收单元， 用于接收服务器发送的替换后的媒体流；
输出单元， 用于输出接收单元所接收的替换后的媒体流。
本发明实施例所提供的技术方案中， 可视终端在进行双方通话或多方 通话过程中， 可以在不中断当前通话连接的情况下， 使用多媒体服务器提 供替换媒体源实现参与可视通话的其他终端点播一段替代自己音频和 /或 视频的替换媒体源， 而不受终端本身存储容量的限制， 具有丰富的媒体源 供选择， 可进一步满足用户的不同需求， 从而为运营商提供了一种新的增 值业务， 能够为运营商带来新的业务收入。 附图说明
图 1为本发明实施例中系统的主要组成结构框图；
图 2为本发明实施例中终端通话过程中的媒体流替换方法的流程图； 图 3为本发明实施例中的媒体流替换系统的结构框图；
图 4为本发明实施例中的媒体流替换方法的流程图；
图 5为本发明实施例中的媒体流替换系统的结构框图； 的流程图；
图 7为本发明实施例中的多媒体终端的结构图。 具体实施方式
本发明具体实施方式中， 通过在网络侧设置用于存储替换媒体源的多 媒体服务器， 当终端发出媒体流替换请求时， 从多媒体服务器中获取相应 的替换媒体源， 利用该替换媒体源对所述终端发出的媒体流进行替换。 而 不受终端本身存储容量的限制， 具有丰富的媒体源供选择， 可进一步满足 用户的不同需求。
下面将结合各个附图对本发明的主要实现原理及其具体实施方式进 行详细的阐述。
参照图 1， 本发明实施例的媒体流替换系统的结构框图， 其主要包括 通信服务器 10和多媒体服务器 20, 其中各个组成部分的具体作用如下： 通信服务器 10， 用于接收终端在通话过程中发出的媒体流替换请求， 根据请求中携带的替换媒体源标识从多媒体服务器 20 中获取相应的替换 媒体源, 利用该替换媒体源对替换发起终端发出的媒体流进行替换;
多媒体服务器 20, 连接所述通信服务器 10, 用于存储及提供替换媒 体源。
应用上述系统， 本发明实施例提供了一种在终端通话过程中的媒体流 替换方法， 参照图 2， 终端通话过程中的媒体流替换方法的实现流程， 包 括步骤：
步骤 S10、移动终端之间通过通信服务器建立双方或多方的可视通话。 步骤 S20、 在可视通话过程中， 移动终端通过通信服务器登录多媒体 服务器， 利用多媒体服务器提供的导航媒体流选择用于替换自身发出的视 频和 /或音频媒体流的替换媒体源， 向通信服务器发出媒体流替换请求。
步驟 S30、 通信服务器根据媒体流替换请求中携带的替换媒体源标识 从多媒体服务器中获取相应的替换某体源， 利用该替换媒体源对所述终端 发出的媒体流进行替换；
本发明实施例中， 通信服务器利用获取到的替换媒体源对终端发出的 媒体流进行替换的方式有两种： 第一种方式为： 通信服务器利用从多媒体服务器获取到的替换媒体源 对终端发出的音频和视频媒体流同时进行替换；
第二种方式为： 通信服务器根据从多媒体服务器获取到的替换媒体源 的类型对终端发出的媒体流中的相应部分进行替换。
步驟 S40、 通信服务器将替换后的媒体流发送给所有通话参与终端， 或者除替换发起终端外的所有通话参与终端。
以下将针对本发明方案的主要实现原理， 分别以双方可视通话和多方 可视通话为例，对本发明方案的具体实施过程进行详细的阐述， 参照图 3 , 本发明的用于可视终端双方通话中的媒体流替换系统主要包括通信服务 器 30和多媒体服务器 40, 其中各个组成部分的具体作用如下：
通信服务器 30,用于接收终端在可视通话过程中发出的媒体流替换请 求， 根据请求中携带的替换媒体源标识从多媒体服务器 40 中获 目应的 替换媒体源， 利用该替换媒体源对替换发起终端发出的媒体流进行替换； 其中通信服务器 30具体包括：
互操作网关 301 , 用于根据终端发出的媒体流替换请求从多媒体服务 器中获取相应的替换媒体源， 将获取到的替换媒体源转换为电路域数据， 并进行相应的控制协议及数据格式的转换后发送给交换单元 302;
交换单元 302, 用于将终端发出的媒体流及媒体流替换请求发送给视 频互操作网关 301， 并接收视频互操作网关 301发出的替换后的媒体流， 将替换后的媒体流发送给所有通话参与终端， 或者除替换发起终端外的所 有通话参与终端。
多媒体服务器 40, 连接所述通信服务器 30, 用于存储及提供替换媒 体源。
相应于本实施例中的媒体流替换系统， 这里还进而提出了一种用于可 视终端双方通话中的媒体流替换方法， 请参阅图 4, 该图为本发明的用于 可视终端双方通话中的媒体流替换方法的处理过程流程图， 其主要包括步 驟：
步驟 S100、 两个可视移动终端之间通过通信服务器建立可视通话。 步驟 S101、参与可视通话的任意一个移动终端通过按键方式向通信服 务器发送启动媒体流替换业务的信息代码， 例如 "186#*#"。
步驟 S102、通信服务器中的视频互操作网关收到终端发出的信息代码 后， 验证该代码是否为启动媒体流替换业务的信息代码， 若是， 执行步骤 S104, 否则， 执行步骤 S103。
步驟 S103、视频互操作网关根据信息代码类型执行其他相应的处理过 程。 '
步骤 S104、通信服务器中的视频互操作网关接通多媒体服务器，将多 媒体服务器的下行媒体流转换为电路域数据， 并通过交换单元传送给启动 替换业务的终端， 终端收到的是多媒体服务器提供的替换操作导航媒体 流， 终端通过该导航媒体流进行替换媒体源选择操作， 通过通信服务器向 多媒体服务器发送媒体流替换请求， 该请求中携带有用户选择的替换媒体 源标识。
步驟 S105、多媒体服务器收到终端发出的媒体流替换请求后，根据清 求中携带的替换媒体源标识查询相应的替换媒体源， 并将查询到的替换媒 体源发送给视频互操作网关;
多媒体服务器中存储的替换媒体源为音频媒体流， 或者视频媒体流， 或者音频 +视频媒体流。
步驟 S106、通信服务器中的视频互操作网关将多媒体服务器发出的替 换媒体源转换为电路域数据，以及进行相应的控制协议及数据格式的转换, 以此替换替换请求发起终端发出的视频和 /或音频媒体流。
本实施例中， 视频互操作网关利用获取到的替换媒体源对终端发出的 媒体流进行替换的方式有两种：
第一种方式为： 视频互操作网关利用从多媒体服务器获取到的替换媒 体源对终端发出的音频和视频媒体流同时进行替换；
第二种方式为： 视频互操作网关根据从多媒体服务器获取到的替换媒 体源的类型对终端发出的媒体流中的相应部分进行替换。
步骤 S 107、视频互操作网关将转换后的媒体流和控制流发送给交换单 元， 由交换单元将所述媒体流进行替换后发送给可视通话双方终端， 或者 仅发送给可视通话对端； 当交换单元将替换后的媒体流发送给可视通话双方终端时， 可视通话 双方终端均可收到替换后的媒体流； 而当交换单元将替换后的媒体流仅发 送给可视通话对端时， 替换发起方终端收到的是对端发出的音频及视频媒 体流， 或者收到的是多媒体服务器发出的替换操作导航媒体流。
当上述步驟 S106 中视频互操作网关采用第一种方式对终端发出的媒 体流进行替换时， 终端收到的只是替换后的媒体流；
当上述步骤 S106 中视频互操作网关采用第二种方式对终端发出的媒 体流进行替换时， 若替换媒体源是音频 +视频形式的媒体流， 则终端收到 的是音频 +视频形式的替换媒体流； 若替换媒体源是音频形式的媒体流， 则终端收到的是音频形式的的替换媒体流及对端发出的视频媒体流； 若替 换媒体源是视频形式的媒体流， 则终端收到的是视频形式的的替换媒体流 及对端发出的音频媒体流。
本实施例中， 通话双方的任意一个终端均可通过向视频互操作网关发 送媒体流替换中止请求中止双方通话过程中的媒体流替换。
参照图 5 , 本发明实施例的用于可视终端多方通话中的媒体流替换系 统主要包括可视电话通信服务器 50和多媒体服务器 60, 其中各个组成部 分的具体作用如下：
可视电话通信服务器 50，用于接收终端在可视通话过程中发出的媒体 流替换请求， 根据请求中携带的替换媒体源标识从多媒体服务器 60 中获 取相应的替换媒体源， 利用该替换媒体源对替换发起终端发出的媒体流进 行替换； 其中可视电话通信服务器 50具体包括：
多点控制单元 501 , 用于对多方可视通话进行控制 , 以及根据终端发 出的媒体流替换请求从多媒体服务器中获取相应的替换媒体源 , 以此替换 终端发出的媒体流；
视频互操作网关 502， 用于将终端发出的媒体流转换为分组域数据发 送给多点控制单元 501 , 以及从多点控制单元 501接收替换后的媒体流将 其转换为电路域数据； - 交换单元 503， 用于将终端发出的媒体流及媒体流替换请求发送给视 频互操作网关 502, 并接收视频互操作网关 502发出的替换后的媒体流， 将替换后的媒体流发送给所有通话参与终端， 或者除替换发起终端外的所 有通话参与终端。
多媒体服务器 60, 连接所述可视电话通信服务器 50, 用于存储及提 供替换媒体源。
本发明的其它实施例中所述的交换单元可以不限于 CS域交换单元， 也可是 IMS域交换单元或者其它交换单元。
相应于本实施例中的媒体流替换系统， 这里还进而提出了一种用于可 视终端多方通话中的媒体流替换方法， 参照图 6, 本发明实施例中用于可 视终端多方通话中的媒体流替换方法包括步骤：
步骤 S200、多个可视终端在可视电话通信月良务器中的多点控制单元的 控制下建立多方可视通话。
步骤 S201、参与可视通话的终端中的任意一个具有启动媒体流替换权 限的终端通过按键方式向可视电话通信服务器发送启动媒体流替换业务 的信息代码， 例如 "1 *#，，。
步骤 S202、可视电话通信服务器中的多点控制单元收到终端发出的信 息代码后， 验证该代码是否为启动媒体流替换业务的信息代码， 若是， 执 行步骤 S204, 否则， 执行步骤 S203。
步骤 S203、 多点控制单元根据信息代码类型执行其他相应的处理过 程。
步骤 S204、 多点控制单元判断媒体流替换当前是否正在实施， 若是， 执行步骤 S205 , 否则， 执行步驟 S207。
步驟 S205、多点控制单元判断发出替换业务启动请求的终端的优先级 是否高于当前正在实施的媒体流替换的发起终端的优先级， 若是， 则多点 控制单元中止当前正在实施的媒体流替换， 执行步骤 S207， 否则， 执行步 驟 S206。
步骤 S206、多点控制单元通过交换单元拒绝终端发出的媒体流替换业 务启动请求， 同时向该终端返回当前正在实施其他优先级较高的终端发起 的媒体流替换的提示信息。
步骤 S207、多点控制单元接通多媒体服务器， 由视频互操作网关将多 媒体服务器的下行媒体流转换为电路域数据后， 通过交换单元传送给启动 替换业务的终端， 终端接收的是多媒体服务器提供的替换操作导航媒体 流， 终端通过该导航媒体流进行替换媒体源选择操作， 通过可视电话通信 服务器向多媒体服务器发送媒体流替换请求， 该请求中携带有用户选择的 替换媒体源标识。
步骤 S208、多媒体服务器收到终端发出的媒体流替换请求后，根据请 求中携带的替换媒体源标识查询相应的替换媒体源， 并将查询到的替换媒 体源发送给多点控制单元；
多媒体服务器中存储的替换媒体源为音频媒体流， 或者视频媒体流， 或者音频 +视频媒体流。
步骤 S209、多点控制单元利用多媒体服务器发出的替换媒体源对替换 请求发起终端发出的视频和 /或音频媒体流进行替换。
本实施例中， 多点控制单元利用获取到的替换媒体源对终端发出的媒 体流进行替换的方式与上述实施例中步骤 S106 中描述的方式相同， 不再 赘述。
步骤 S210、 多点控制单元将替换后的媒体流发送给视频互操作网关， 由视频将替换后的媒体流转换为电路域数据发送给交换单元， 由交换单元 将替换后的媒体流同时发送给所有参与可视通话的终端， 或者除替换发起 终端外的可视通话参与终端；
当交换单元将替换后的媒体流同时发送给所有参与可视通话的终端 时， 所有参与可视通话的终端均可收到替换后的媒体流； 而当交换单元将 替换后的媒体流发送给除替换发起终端外的可视通话参与终端时， 替换发 起方终端收到的是收到的是多媒体服务器发出的替换操作导航媒体流。
本明实施例还提供一种多媒体终端，请参阅图 7，该多媒体终端包括： 媒体流请求单元， 用于发送媒体流替换请求； 接收单元， 用于接收服务器 发送的替换后的媒体流； 输出单元， 用于输出接收单元所接收的替换后的 媒体流。
所述媒体流请求单元进一步包括：用户输入单元，用于接收用户指令， ■ 媒体流替换请求生产单元， 用于根据所述用户指令生成媒体流替换请求， 发送单元， 将所述媒体流替换请求发送给网络侧。
所述媒体流请求单元还包括替换媒体源选择单元， 根据网络侧提供的 替换操作导航媒体流选择替换媒体源。
本发明提供的实施例， 使得可视终端在进行双方通话或多方通话过程 中， 可以在不中断当前通话连接的情况下， 使用多媒体服务器提供替换媒 体源实现参与可视通话的其他终端点播一段替代自己音频和 /或视频的替 换媒体源， 从而为运营商提供了一种新的增值业务， 为运营商带来了新的 业务收入。
显然， 本领域的技术人员可以对本发明进行各种改动和变型而不脱离 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
1、 一种终端通话过程中的媒体流替换方法， 其特征在于， 包括步驟： 通信服务器接收终端在通话过程中发出的媒体流替换请求；
根据所述媒体流替换请求中携带的替换媒体源标识从多媒体服务器 中获取相应的替换媒体源；
利用所述替换媒体源对所述媒体流替换请求发起终端发出的媒体流 进行替换。
2、 如权利要求 1所述的方法， 其特征在于， 所述通话为双方通话时， 所述接收终端在通话过程中发出的媒体流替换请求进一步包括：
通信服务器接收来自终端的媒体流替换业务启动请求；
通信服务器将所述媒体流替换业务启动请求转发给多媒体服务器； 并将多媒体服务器发出的替换操作导航媒体流发送给启动替换业务 的终端， 终端利用该导航媒体流选择替换媒体源， 向多媒体服务器发送媒 体流替换请求。
3、 如权利要求 1所述的方法， 其特征在于， 所述通话为多方通话时， 所述接收终端在通话过程中发出的媒体流替换请求进一步包括：
通信服务器接收来自终端的媒体流替换业务启动请求；
若确定正在进行媒体流替换， 则根据发出替换业务启动请求的终端的 优先级判断是否接受所述流媒体替换业务启动请求； 如接受， 则通信服务 器将多媒体服务器发出的替换操作导航媒体流发送给启动替换业务的终 端， 终端利用该导航媒体流选择替换媒体源， 向通信服务器发送媒体流替 换请， 否则， 继续执行所述正在进行的媒体流替换。
4、 如权利要求 1所述的方法， 其特征在于， 所述通话为双方通话时， 所述替换业务启动终端为双方通话中的任意一方终端； .
所述通话为多方通话时， 所述替换业务启动终端为多方通话中具有媒 体流替换业务启动权限的终端。
5、 如权利要求 1至 4中任一项所述的方法， 其特征在于， 所述替换 媒体源为音频和 /或视频和 /或数据。
6、 如权利要求 5所述的方法， 其特征在于， 所述通信服务器利用从 多媒体服务器获取的替换媒体源替换终端发出的音频和 /或视频媒体流。
7、 如权利要求 5所述的方法， 其特征在于， 所述通信服务器根据从 多媒体服务器获取的替换媒体源的类型对终端发出的媒体流中的相应部 分进行替换。
8, 如权利要求 1所述的方法， 其特征在于， 还包括：
通信服务器将替换后的媒体流发送给所有通话参与终端， 或者除替换 发起终端外的所有通话参与终端。
9、 一种媒体流替换系统， 其特征在于， 包括：
多媒体服务器， 用于为终端提供替换媒体源；
通信服务器， 用于接收终端在通话过程中发出的媒体流替换请求， 根 据所述请求中携带的替换媒体源标识从多媒体服务器中获取相应的替换 媒体源 , 利用该替换媒体源对替换发起终端发出的媒体流进行替换。
10、 如权利要求 9所述的系统， 其特征在于， 所述通信服务器包括： 交换单元， 用于接收终端发出的媒体流并进行转发；
互操作网关， 用于接收所述交换单元转发的终端发出的媒体流； 所述交换单元还用于接收终端发出的媒体流替换请求并将所述媒体 流替换请求发送给所述互操作网关， 所述互操作网关根据所述终端发出的 媒体流替换请求从多媒体服务器中获取相应的替换媒体源， 并将所述替换 媒体流发送给所述交换单元， 所述交换单元用所述替换媒体流替换所述终 _ 端发出的媒体流发送给通话参与终端。
11、 如权利要求 9所述的系统， 其特征在于， 所述通信服务器包括： 交换单元， 用于接收终端发出的媒体流并进行转发；
互操作网关， 接收所述交换单元转发的终端发出的媒体流， 并作转换 处理后予以发送；
多点控制单元， 用于接收所迷互操作网关发送的经转换处理后的终端 发出的媒体流；
所述交换单元还用于接收终端发出的媒体流发出的替换请求并将所 述请求通过所述互操作网关发送给所述多点控制单元， 所述多点控制单元 根据所述终端发出的媒体流替换请求从多媒体服务器中获取相应的替换 媒体源， 以—所述替换媒体源替换终端发出的媒体流以发送给通话参与终 端。
12、 如权利要求 9至 11 中任一项所述的系统， 其特征在于， 所述替 换媒体源为音频和 /或视频和 /或数据。
13、 一种通信服务器， 其特征在于， 包括：
交换单元， 用于接收将终端发出的媒体流并进行转发；
互操作网关， 用于接收所述交换单元转发的终端发出的媒体流； 所述交换单元还用于接收终端发出的^^体流替换请求并将所述媒体 流替换请求发送给所述互操作网关， 所述互操作网关根据所述终端发出的 媒体流替换请求从多媒体服务器中获取相应的替换媒体源， 并将所述替换 媒体流发送给所述交换单元， 所述交换单元用所述替换媒体流替换所述终 端发出的媒体流发送给通话参与终端。
14、 一种通信服务器， 其特征在于， 包括：
交换单元， 用于接收终端发出的媒体流及媒体流替换请求发进行转 发；
互操作网关， 接收所述交换单元转发的终端发出的媒体流， 并作转换 处理后予以发送；
多点控制单元， 用于接收所述互操作网关发送的经转换处理后的终端 发出的媒体流；
所述交换单元还用于接收终端发出的媒体流发出的替换请求并将所 述请求通过所述互操作网关发送给所述多点控制单元， 所述多点控制单元 根据所述终端发出的媒体流替换请求从多媒体服务器中获取相应的替换 媒体源， 以所述替换媒体源替换终端发出的媒体流发送给通话参与终端。
15、 一种多媒体终端， 其特征在于， 包括：
媒体流请求单元， 用于发送媒体流替换请求;
接收单元， 用于接收服务器发送的替换后的媒体流；
输出单元， 用于输出接收单元所接收的替换后的媒体流。
16、 如权利要求 15所述的多媒体终端， 所述媒体流请求单元进一步 包括用户输入单元， 用于接收用户指令； 媒体流替换请求生产单元， 用于 根据所述用户指令生成媒体流替换请求， 发送单元， 将所述媒体流替换请 求发送给网络侧。
17、 如权利要求 15所述的多媒体终端， 所述媒体流请求单元还包括 替换媒体源选择单元 ,根据网络侧提供的替换操作导航媒体流选择替换媒 体源。
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