P2P资源均衡利用策略控制搭便车行为

P2P网络中大量存在的搭便车行为给网络的响应速度、可用性、健壮性等造成了很大影响。目前的研究重点是设计有效的P2P信任模型来抑制搭便车行为。文中借鉴社会经济发展策略,提出基于资源均衡利用的信誉评价方法,对资源贡献大、贡献与消费平衡的节点赋予高信誉度。使节点贡献其他节点需要的资源,消费资源时量入为出;同时为新节点提供基本信誉度来保障其尽早开展资源交易。仿真实验表明搭便车行为受到有效抑制,网络资源的利用率明显提高。

Resource balance utilization strategy to suppress free-riding in P2P network

The increasingly serious free riding behavior is prevalent in almost all P2P networks, which reduces the robustness, availability and service response speed of P2P networks. Research of the reasonable and effective P2P trust model to prohibit free-riders to contribute more to the system has become an important direction. Therefore, in reference to the social economic development strategy, the method of reputation equilibrium based on resources utilization is proposed, which a high degree of credibility is given the resource contribution nodes and the contribution and consumption balance nodes. The nodes consider other nodes＇ demand to contribute resources and measure their ability to consume resource. At the same time,it provides basic credibility to protect its resources for the new node as soon as possible to carry out transactions. The simulation results show that the free riding behavior is effectively restrainer and the resource utilization rate is increased.