分析了因特网上主流P2P应用的体系结构,构造了一个描述用户共享行为的复杂网络演化模型——SNET模型。在用户共享文件持续增长的驱动下,SNET模型可以演化出与实际P2P应用相似的拓扑结构。通过分析SNET模型的仿真结果与清华校园网的实际测量数据,发现P2P应用和SNET模型中用户的连接数量都表现出幂率分布规律。
This paper investigated the architecture of some popular P2P applications in the Internet,and presented a complex network model(SNET) to characterize the user-share behaviors in P2P applications.This model was driven by the increasing amount of sharing files in each user,and evolved into a complicated topology just like the real P2P applications.Also analyzed the simulation results of SNET and the measurement of P2P applications in TUNET.The probability distributions of the number of user connections in both SNET and P2P applications follow a power law.