Peer selecting model based on FCM for wireless distributed P2P files sharing systems  

作　　者：李曦 纪红 郑瑞明 

机构地区：[1]Key Lab of Universal Wireless Communications,Ministry of Education [2]School of Telecommunication Engineering,Beijing University of Posts and Telecommunications

出　　处：《Journal of Harbin Institute of Technology(New Series)》2010年第5期593-599,共7页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China(Grant No.60672124 and 60832009);Hi-Tech Research and Development Program(National 863 Program)(Grant No.2007AA01Z221)

摘　　要：IIn order to improve the performance of wireless distributed peer-to-peer(P2P)files sharing systems,a general system architecture and a novel peer selecting model based on fuzzy cognitive maps(FCM)are proposed in this paper.The new model provides an effective approach on choosing an optimal peer from several resource discovering results for the best file transfer.Compared with the traditional min-hops scheme that uses hops as the only selecting criterion,the proposed model uses FCM to investigate the complex relationships among various relative factors in wireless environments and gives an overall evaluation score on the candidate.It also has strong scalability for being independent of specified P2P resource discovering protocols.Furthermore,a complete implementation is explained in concrete modules.The simulation results show that the proposed model is effective and feasible compared with min-hops scheme,with the success transfer rate increased by at least 20% and transfer time improved as high as 34%.IIn order to improve the performance of wireless distributed peer-to-peer（P2P）files sharing systems,a general system architecture and a novel peer selecting model based on fuzzy cognitive maps（FCM）are proposed in this paper.The new model provides an effective approach on choosing an optimal peer from several resource discovering results for the best file transfer.Compared with the traditional min-hops scheme that uses hops as the only selecting criterion,the proposed model uses FCM to investigate the complex relationships among various relative factors in wireless environments and gives an overall evaluation score on the candidate.It also has strong scalability for being independent of specified P2P resource discovering protocols.Furthermore,a complete implementation is explained in concrete modules.The simulation results show that the proposed model is effective and feasible compared with min-hops scheme,with the success transfer rate increased by at least 20% and transfer time improved as high as 34%.

关 键 词：wireless P2P files sharing systems peer selecting model fuzzy cognitive maps 

分 类 号：TP393.4[自动化与计算机技术—计算机应用技术]