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一种基于确定性网络编码的P2P文件分发机制 被引量:1

Mechanism of P2P File Distribution Based on Deterministic Network Coding
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摘要 提出了一种新的基于确定性网络编码的P2P文件分发模型--DLNCCD.该模型采用确定性编码方法,并将该编码方法应用在特殊的多播网络Uniform Network上,在保证达到最大的网络编码增益的同时降低了编码解码的复杂度.仿真表明:与传统的文件分发系统BT相比,以该模型为基础建立的文件分发系统总的分发时间降低了10%~15%,系统的吞吐量提高了17%-21%,平均下载时间约减少了20%,有效地提高了文件分发系统的性能. Abstract: This paper proposes a P2P file distribution model based on deterministic network coding (DL- NCCD). This coding method can be applied to the specific multicast uniform network topology to reduce complexity of network coding, improve decoding efficiency, and ensure maximum network coding gain. The experimental results show that the total distribution time can reduce by 10%-15%, and the throughput can improve by 17%-21%, and the average download time can reduce by about 20%, Therefore the performance of the file distribution system is improved.
作者 郝琨 金志刚
出处 《应用科学学报》 CAS CSCD 北大核心 2014年第3期246-250,共5页 Journal of Applied Sciences
基金 国家自然科学基金(No.61162003) 天津市高等学校科技发展基金(No.20120813 No.20130419)资助
关键词 P2P 确定性网络编码 文件分发 均衡网络 P2P, deterministic network coding, file distribution, Uniform Network
作者简介 郝琨,副教授,博士,研究方向:网络编码、网络性能优化,E-mail:littlehao@126.com; 金志刚,教授,博导,研究方向:网络管理与安全、网络性能评价,E-mail:zgin@tju.edu.cn
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