基于用户需求的内容分发点对点网络系统研究  

Research on CDN-P2P System over User Requirements

作　　者：张玉洁[1,2] 何明[1,2] 孟祥武[1,2] 

机构地区：[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

出　　处：《软件学报》2014年第1期98-117,共20页Journal of Software

基　　金：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

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.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.

关 键 词：用户需求 CDN-P2P 需求获取 用户相似性 用户信任度 

分 类 号：TP393.4[自动化与计算机技术—计算机应用技术]