| 基于网络编码的P2P视频点播数据传输方案 |
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| 作者单位： | 西安电子科技大学综合业务网理论及关键技术国家重点实验室 |
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| 摘 要： | 为提高视频点播系统的性能,提出了一种基于随机网络编码的P2P视频点播数据传输方案.该方案包括服务器中流媒体数据的预处理,数据块的网络编码和解码过程,Peer节点数据调度算法,Peer节点数据块缓存的设计,以及数据块的处理流程等部分.分析表明,相对于纯P2P视频点播系统,该方案增强了系统鲁棒性,提高了Peer节点下载速度和下载成功率.仿真实验中该方案相对于纯P2P视频点播将Peer节点的数据下载速度提高了约5%.
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| 关 键 词： | 数据传输 网络编码 P2P 视频点播 流媒体 |
A peer-to-peer VOD data transmission scheme based on network coding |
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| Authors: | Lin Guoqing Wang Jing Wang Xinmei Li Ying |
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| Abstract: | To improve the performance of the video on demand(VOD) system,a peer-to-peer(P2P) VOD data transmission scheme based on random network coding is presented.It includes the preprocessing of streaming media data in server,the encoding and decoding of data block,the data scheduling algorithm in peer nodes,the buffer design of data block and the processing of data block in peer nodes.The analysis shows that compared with the original peer-to-peer VOD system,the proposed scheme enhances systemic robust and increases the downloading speed and the downloading success rate in peer nodes.Simulation results show that the downloading speed is improved by about 5% in this scheme compared with the original peer-to-peer VOD system. |
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| Keywords: | data transmission network coding peer-to-peer video on demand streaming media |
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