一种新型BitTorrent-like网络系统动力学模型(英文)  

A dynamic model of BitTorrent-like P2P file-sharingsystems

作　　者：张海鹏[1] 殷保群[1,2] 陆效农[1] 

机构地区：[1]中国科学技术大学自动化系,网络传播系统与控制安徽省重点实验室,安徽合肥230027 [2]中国科学院声学所国家网络新媒体工程技术研究中心,北京100190

出　　处：《中国科学技术大学学报》2012年第10期854-860,共7页JUSTC

基　　金：Supported by the National Natural Science Foundation of China(61174124,60935001);the National High Technology Research and Development Program(863)of China(2011AA01A107)

摘　　要：针对BitTorrent-like文件共享系统,提出了一个新型动力学模型.新的动力学模型从微观的角度描述了P2P文件共享系统特性,通过采用新的状态去描述系统节点间的交互演化过程.通过该模型,研究了影响系统的诸多因素,主要通过策略因素的形式来体现,其中包括节点选择策略、文件片选择策略、带宽分配策略和节点阻塞策略.最后,通过实验验证模型的正确性.A dynamic model of BitTorrent-like P2P file-sharing systems was proposed. The model describes the P2P file-sharing system in the microcosmic view by defining a novel state, which is used to describe the evolution of the interaction between peers of the system. Through the model, the factors that influence the system were studied. These factors are embodied in the central policies of the system. These policies include peer selection policy, piece selection policy, bandwidth allocation policy and peer choking policy. Finally, some experiments were carried out to validate the model.

关 键 词：动力学模型 P2P文件共享系统 BITTORRENT 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]