Research Of Incentive Model In P2P Network

The paper take the Xi'an science and technology research project "Research of the P2P network communication" as a background,proposed the topic "Research of the incentive model in the P2P network",the research purpose of the paper is to hope by taking into account the reputation of the nodes in the P2P network in the impact of access to sharing resources,to improve one kind of concrete incentive mechanism algorithm,to suppress to phenomenon of the Free-riding and to solve the question of the tragedy of common,which hinder its application development in the peer-to-peer network,thus the performance of P2P network is improvedFirstly,the paper has studied several common P2P network models,analyzing their merits and disadvantages.Traditional models such as Napster and Gnutella had the Free-riding problem generally,in view of the Free-riding question,the incentive mechanism solution is adopted.Secondly,the paper has analyzed incentive mechanisms based on micro-payment model,direct-reciprocal benefit and reputation model,and has compared merits and disadvantages of three kinds of incentive mechanism models.The phenomenon of the Free-riding and the question of the tragedy of common can be better suppressed and solved through the incentive mechanism based on the reputation,which can achieve the better cooperation between the nodes.The paper is on the basis of incentive mechanism algorithm that allocated the sharing resources according to the peer's contribution,and used peer's contribution to encourage node enthusiastic,it analyzed the influence of the node reputation to obtain the sharing resource to the node in the P2P network,which has proved the improvement mentality,which add node reputation to the incentive mechanism algorithm in the node contribution value as a variable.In order to solve possibly presents whitewashing question,also the dual reputations solution is introduced to solve the whitewashing problem in algorithm improvement in the paper.And the performance analysis and the experiment simulation are carried on post improved-algorithm.The simulation experiment indicated:the phenomenon of the Free-riding and the question of the tragedy of common can be better suppressed and solved on the post improved-algorithm,which can achieve the goal to drive multiple nodes joint participation resource sharing.