基于用户需求的内容分发点对点网络系统研究

张玉洁; 何明; 孟祥武

引用本文:	张玉洁,何明,孟祥武.基于用户需求的内容分发点对点网络系统研究.软件学报,2014,25(1):98-117

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基于用户需求的内容分发点对点网络系统研究
张玉洁^1,2, 何明^1,2, 孟祥武^1,2
1.智能通信软件与多媒体北京市重点实验室(北京邮电大学), 北京 100876;2.北京邮电大学计算机学院, 北京 100876

摘要:

点对点内容分发网络技术已成为近年来研究热点领域之一.为用户推荐有价值的资源，提高用户资源定位的准确率和分发效率，是CDN-P2P技术面临的巨大挑战.从用户需求的角度出发，综述了近年来CDN-P2P领域的研究状况：讨论了用户需求并介绍了需求获取方法；对基于用户需求的CDN-P2P系统模型、节点特征及用户相似性、用户之间的相互关系、节点安全性和搜索机制等进行了对比讨论和概括总结；对基于用户需求CDN-P2P领域存在的难点和热点问题作了深入的剖析；最后给出了基于用户需求的CDN-P2P系统的发展趋势及其展望.

关键词: 用户需求 CDN-P2P 需求获取用户相似性用户信任度

DOI：10.13328/j.cnki.jos.004454

分类号:

基金项目:国家自然科学基金（60872051，61001118）；北京市教育委员会共建项目专项资助

Research on CDN-P2P System over User Requirements

ZHANG Yu-Jie^1,2, HE Ming^1,2, MENG Xiang-Wu^1,2

1.Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia (Beijing University of Posts and Telecommunications), Beijing 100876, China;2.School of Computer Science, Beijing University of Posts and Telecommunications, Beijing 100876, China

Abstract:

CDN-P2P technology has recently become one of the hottest research fields. Recommending the valuable resources and improving accuracy of resource location and efficiency of content distribution for users, are CDN-P2P's challenges. This paper presents an overview of the field of CDN-P2P research in recent years from user requirements' perspective. It discusses user requirements and introduces ways of requirements acquirement. Based on CDN-P2P system over user requirements, this paper provides a comprehensive discussion on node characteristics and user similarity, relationships between nodes, nodes security and search mechanism. The difficult and hot issues about CDN-P2P system over user requirements are analyzed in depth. The future development trend and prospects for CDN-P2P system over user requirements are also discussed.

Key words: user requirement CDN-P2P requirement acquirement user similarity user trust