基于网络编码的P2P流媒体直播系统研究

Research of P2P Live Streaming System Based on Network Coding

针对目前存在的P2P流媒体直播系统不能充分利用网络资源的问题,提出了一种基于网络编码的P2P流媒体直播方案。该方案充分利用了Peer节点的计算能力,即在对媒体数据进行存储转发前先进行网络编码,以提高数据块的下载速率以及节省网络带宽资源。实验结果表明,在同等网络状况下,利用了网络编码后节点的播放质量有了明显的改善,尤其是在网络状况不好的情况下改善更为明显。

Aiming at the problem of the existed P2P live streaming systems that are unable to utilize network, proposes a scheme for peer - to- peer live media streaming that utilizes network coding. The scheme takes full advantage of ability of nodes to execute network coding and store - and - forward operation on the passed data, and thus improve transfer ratio of data block and save network bandwidth resource. The experimental result shows that the quality of playback has been improved apparently after using network coding under the same network condition.