SSBIE:P2P覆盖网中基于信息交互的超节点选择  

SSBIE:Supernode Selection Based on Information Exchange in P2P Overlay Network

作　　者：曾志文[1] 刘佳琦[1] 陈志刚[1] 李登[1] 

机构地区：[1]中南大学信息科学与工程学院,湖南长沙410083

出　　处：《小型微型计算机系统》2008年第6期1056-1061,共6页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(60573127)资助;湖南省自然科学基金项目(06JJ30032)资助

摘　　要：超节点选择是构造基于超节点结构P2P覆盖网的主要问题之一,与通常按节点能力如带宽、CPU处理、存储空间等纯物理性质选择超节点不同,本文充分考虑节点间延时、距离、信息交互频率和时间以及内容相似度等,提出一种基于信息交互的超节点选择方法(SSBIE),按节点Score值选择超节点,以解决P2P网络中搭便车(free-rider)问题.实验结果表明SSBIE较之按节点能力选择的方法使P2P系统性能明显提高,可提高文件查询成功率,减少平均查询跳数,降低查询延时.The selection of supernode is the main problem of constructing supernode-based P2P overlay. Differing from the general supernode selection which is only based on physical capability such as bandwidth, CPU processing ability, storage spaces and so on, supernode selection based on information exchange（SSBIE） is presented in this paper considering delay, physical distance, information exchange frequency,information exchange time and degree of querying similarity. SSBIE selects the supernode to solve the free-rider problem by each node＇s score. The experimental results show that the SSBIE improves the file querying success rate, decreases the average querying hops and querying delay in P2P super-node overlay.

关 键 词：P2P覆盖网 自治域 超节点 信息交互 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]