基于信任度的P2P系统节点激励机制

摘要

In view of the current existing in the P2P networks free-riding phenomenon, a model of incentive mechanism based on trust is proposed. The idea of virtual currency is introduced, the trust is divided into three levels, finally the mathematical model is constructed that it can estimate trust of the node. In addition , At the edge of network super tracking server is deployed, it supervise and maintanin the trust of nodes. The theoretical analysis and the simulation data show that the incentive mechanism is very good solution to the free-riding behavior, improve the performance of the P2P networks and service quality, make the P2P network node to achieve fair trade.%针对当前P2P网络中存在的搭便车现象,提出了一种基于信任度的激励机制.引入虚拟货币思想,把信任度分为3个等级；构造了评价节点信任度的数学模型,把超级跟踪服务器部署在网络边缘,主要监督和维护网络节点的信任度.理论分析和仿真数据表明,该激励机制可很好地解决搭便车行为,提高了P2P网络的性能和服务质量,使P2P网络中节点实现公平交易.