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机构地区:[1]北京邮电大学网络技术研究院,北京100876 [2]中国移动通信研究院,北京100053 [3]北京交通大学,北京100044
出 处:《软件》2012年第11期64-67,共4页Software
摘 要:现有的多媒体会议系统产品大多是基于集中式管理的传统多媒体会议系统,这种系统中存在一个中心控制节点(MCU)负责控制整个会议系统的正常运作,这种方法虽然易于控制但带来了MCU负载过重、会议规模较小、系统不稳定等问题。近年来随着多媒体会议技术的不断发展,传统的集中式多媒体会议系统的缺点不断暴露,分布式多媒体会议系统的架构应运而生,该架构可以优化传统多媒体会议中存在的带宽消耗大、系统不稳定等缺陷,提供较为稳定、用户感官较好的多媒体会议系统。本文在研究分布式多媒体会议系统和架构的基础上提出一种融合可伸缩视频编码(SVC)技术的分片式分布式多媒体会议系统方案,利用开发原型系统并测量重要参数的方法,利用测试结果证明本系统可以解决解决传统会议系统中带宽瓶颈和丢包严重的问题。Most of the existing multimedia conferencing products are traditional multimedia conferencing system, This kind of system are based on centralized management, having a central control node (MCU) witch response for control the normal functioning of the entire conference system. This method is easy to control, but bring some problems like MCU overloading, small-scale meeting and system instability. With the development of multimedia conferencing technology in recent years, the traditional centralized multimedia conferencing system's shortcomings exposed continuously and distributed multimedia conferencing system architecture emerged. This architecture can optimize the traditional multimedia conference on bandwidth consumption, system instability and other defects, and bring a more stable multimedia conferencing system to us. This article design a distributed multimedia conferencing system witch based on sub-chip and using scalable video coding (SVC) technology. And in order to prove that the system can resolve the serious problem of traditional conference system, the study have developed a prototype system and measured the important parameters of conference system. Conclusion prove this system architecture could solve the bandwidth consumption, system instability problem without bring other concern.
分 类 号:TN948.63[电子电信—信号与信息处理]
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