基于网络编码的P2P流媒体传输技术

Network Coding Based P2P Media Streaming Technology

提出了一种基于网络编码的P2P流媒体传输方案,将分层编码后的数据包在基本层和增强层分别进行网络编码后传输,接收节点可根据带宽情况控制发送节点是否发送增强层数据,提高了播放质量和稳定性。仿真试验表明,基于网络编码的传输方案,接收节点的播放质量能够得到提高,当网络中的节点间带宽剧烈变化的情况下,对比提高尤为明显。

A scheme for peer-to-peer living media scheme is proposed. Layered coded data is then coded through network coding before it is transmitted to the receiving peer, and the receiving peer could decide whether to let the transmitting peer send the enhancement layer. This method can improve the quality and stability of the streaming playback. According to the result of the simulation, this network coding based method can improve the playback quality of the receiving peer, and the improvement is comparably more remarkable when the bandwidth changed dramatically.