多媒体远程教学系统实时传输解决方案  

Solution of Real-time Multimedia Transmission for Distance Learning System

作　　者：杨锐[1] 

机构地区：[1]西安邮电学院,陕西西安710061

出　　处：《现代电子技术》2007年第14期130-132,共3页Modern Electronics Technique

摘　　要：有效的传输机制是保障多媒体远程教学系统这样的分布式多媒体系统应用需求的关键。针对分布式多媒体应用,结合流媒体的传输控制协议,提出了一种远程教学系统实时传输解决方案:通过RTSP(实时流传输协议)建立和控制多媒体会话,RTP(实时传输协议)承载实时信息的传输,RTCP(实时传输控制协议)监控数据的传输状态,RSVP(资源预留协议)预约传输所需的Internet资源保证服务质量。该传输方案不仅适用于远程教学系统,也适用于其他基于Internet的实时多媒体应用系统。A solution of real - time multimedia transmission for the distance learning system is proposed in this paper based on the analysis of transport and control protocol on streaming media to support the effectively multimedia transmission over a packet switched network. The proposed solution combines RTSP with RSVP to set up and manage multimedia sessions which are carried by RTP. RTCP control packets can be used to determine the network congestion state and modify transmission rate dynamically in the solution to guarantee quality of session. The solution can meet the distance learning system demands.

关 键 词：远程教学系统 媒体传输 传输协议 QOS 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]