The Data Transmission Mechanism And Optimal Management In BT-like P2P Network

P2P means Peer-to-Peer, because of its benefits on low costs and users scalability, P2P has a wide range of and important applications in resource sharing, distributed computing, instant messaging and so on. BitTorrent (BT) protocol is one of the most widely applied P2P file transfer protocols.Through researching the operating condition of data transmission in a BitTorrent-like P2P system, we obtain a fuzzy relation model for the BitTorrent-like P2P system; and according to the actual application of BitTorrent-like P2P system, we obtain a fuzzy optimization model. In this paper, we discuss the solutions of the fuzzy relation model. It Mainly Includes:(1) We define the solutions space, the maximum solution and the minimal solutions, and discuss the nature of the solutions. Also we give the necessary and sufficient condition about the solvable of the model.(2) We discuss the nature of the minimal solutions, and also give the necessary and sufficient condition about the minimal solutions of the model. According to the nature of the minimal solutions, we present an algorithm to search for minimal solutions of the model.(3) We define the critical model, and set the critical model. and according to the nature of the critical model, we present a more effective algorithm to search for minimal solutions of the model.(4) We set the equation model, and prove the relation between the minimal solutions and the solutions of it’s corresponding equality model.BitTorrent-like P2P system is a efficient transmission mode, the research of this paper has a guiding significance for the practical application of this technology. In addition, the conclusions in this paper play a key role in solving this model. This paper have both practical value and theoretical value.