一种新的基于博弈论的P2P激励机制

Novel incentive based on game theory in P2P networks

针对P2P系统中的搭便车和公共悲剧问题,提出了一种基于博弈论的激励机制。每个节点从个人理性出发,在最大化个人收益的同时根据请求者的贡献分配带宽,并利用动态规划方法求出了最优解,实现了有限资源的帕累托配置,达到了社会收益最大化的目的。仿真实验表明,该激励机制促进了社会收益的快速增长,达到了激励节点参与资源共享的目的。

In order to solve free rider and tragedy of the commons problems in peer-to-peer（P2P） systems, this paper proposed a novel incentive based on game theory. While trying to maximize its own utility subjected to individual rationality, every peer allocated bandwidth resources efficiently according to competing peers＇ contribution values to maximize the social utility. The simulation result shows that the incentive increased the social utility of the whole P2P system rapidly and incentive every peer to share resources effectively.