基于网络编码的分层流媒体直播方案  

Live scheme of layered media streaming based on network coding

作　　者：黄铁[1] 刘欣[2] 

机构地区：[1]湖南文理学院计算机科学与技术学院,湖南常德415000 [2]国防科学技术大学计算机学院,湖南长沙410073

出　　处：《计算机工程与设计》2010年第4期747-750,755,共5页Computer Engineering and Design

基　　金：湖南省教育厅科研基金项目(09C703)

摘　　要：针对当前P2P流媒体直播系统网络资源利用率不高的问题,提出了一种基于网络编码的数据传输方案。方案中对等节点利用系数向量矩阵对媒体数据先进行网络编码,再存储转发,以提高系统的稳定性,并提高网络带宽的利用率。实验结果表明,在同等网络资源条件下,对等节点减少了接收的平均启动延迟,提高了平均播放的连续度,提高了整体播放性能。A data scheduling scheme was proposed based on network coding in terms of the problem of low resource utilization ratio in P2P media streaming.Firstly,Peer node is coded on media data by using coefficient matrix,and then the media data was stored and transmitted to improve system stability and utilization ratio of network band.The experiment results show that the average starting delay of receiver is decreased and the broadcasting continuous degree is greatly improved on condition of equivalent resources,and the overall broadcasting performance is improved.

关 键 词：网络编码 流媒体 数据调度 Peer节点 直播方案 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]