| 一种P2P文件共享网络流量分析模型 |
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| 引用本文： | 李一鹏,任勇,袁坚,山秀明.一种P2P文件共享网络流量分析模型[J].清华大学学报(自然科学版),2011(6). |
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| 作者姓名： | 李一鹏 任勇 袁坚 山秀明 |
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| 作者单位： | 清华大学电子工程系;清华大学自动化系; |
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| 基金项目： | 国家“九七三”重点基础研究项目(2007CB307100,2007CB307105); 国家自然科学基金资助项目(60932005,60674048) |
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| 摘 要： | 为反映P2P网络中节点间自组织的数据传输行为对底层网络性能的影响,提出一种二维阴影模型,用于分析和比较节点间对等访问、异质性访问以及引入代理节点后网络性能的变化规律。仿真结果表明:对等访问和异质性访问情况下,网络关键性能参数都出现了相变现象;与对等访问相比,访问的异质性引起相变点的明显左移,表明网络性能恶化;引入代理节点可减缓路由器节点数据包排队长度和丢包率的突变,均衡了网络流量的空间分布,相变点的右移说明网络性能得到一定程度的改善。
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| 关 键 词： | P2P网络 流量分析 相变 |
Traffic analysis model for P2P file sharing network |
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| LI Yipeng,REN Yong,YUAN Jian,SHAN Xiuming.Traffic analysis model for P2P file sharing network[J].Journal of Tsinghua University(Science and Technology),2011(6). |
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| Authors: | LI Yipeng REN Yong YUAN Jian SHAN Xiuming |
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| Institution: | LI Yipeng1,2,REN Yong1,YUAN Jian1,SHAN Xiuming1 (1.Department of Electronic Engineering,Tsinghua University,Beijing 100084,China,2.Department of Automation,China) |
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| Abstract: | A two-dimensional shadow model was developed to describe the network performance fluctuations caused by self-organized data transmission among peers in P2P file sharing networks.The network performance is analyzed for equivalence,heterogeneity and proxy mechanisms.Simulations show that equivalence accessing and heterogeneous accessing both cause phase transitions of the network performance parameter.Unlike equivalent accessing,heterogeneous accessing gives rise to a left-shift of the phase transition point ... |
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| Keywords: | peer-to-peer network traffic analysis phase transition |
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