Study of File Diffusion in P2P Network Using Dynamic Model

Recently, as more and more applications of peer-to-peer network (P2P network) appeared on file sharing and information retrieving, many researchers made great efforts in studying its search mechanism and algorithm design. In this paper, we establish a novel Differential Coefficient Dynamics Model of file transmission in P2P network using system dynamics method based on dynamics characteristics of P2P network. The threshold value of a certain file in P2P network transmission is calculated. We also analyze the influence of some important parameters to the file transmission, such as locate successful rate among servents, entering and withdrawing rate of servents and forget rate of servents.