一种多媒体数据可靠传输策略  

A Reliable Transmission Scheme for Multimedia Data

作　　者：王薇[1] 刘文予[1] 戴声奎[1] 王曜[1] 

机构地区：[1]华中科技大学电子与信息工程系,武汉湖北430074

出　　处：《电讯技术》2004年第5期62-65,共4页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(60372067);国家863计划项目(2002AA119010)

摘　　要：针对UDP数据报传输不可靠性这一问题,提出一种主动防止数据报丢失的策略。该策略在编码端分片传输UDP数据报,在接收端利用环形缓冲区接收并重组各数据报分片。这种策略不仅有效地避免了接收端多个数据报片冲突以及接收缓冲区溢出等现象的出现,而且减小了数据报片丢失和乱序对解码图像质量的影响,使得恢复的图像质量有明显改善。The research on reliable transmission of multimedia data is reviewed. After analyzing the conflict between the correct probability of the received packets and the utilization rate of the packet units, a novel end-to-end video sending-receiving method is proposed based on a rate control technology of different packet sizes. Practice proves that the quality of the decoded video pictures at receiver is distinctly advanced.

关 键 词：数据报 多媒体数据 UDP 缓冲区溢出 不可靠性 可靠传输 丢失 接收端 图像质量 解码 

分 类 号：TN919[电子电信—通信与信息系统] TP393[电子电信—信息与通信工程]