Peer-to-peer file sharing game using correlated equilibrium

Beibei Wang, Zhu Han, K. Liu
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引用次数: 21

Abstract

Peer-to-peer (P2P) systems have become more and more popular in nowadays by providing decentralized, self-organizing and fault tolerant file sharing services. As the selfish users do not benefit from providing free service, they tend to download files from other users and yet not to upload for the others, resulting in low system efficiency. In this paper, we propose a correlated equilibrium-based file sharing game to enhance users' performance. We first characterize users' utility with their expected delay. Then, using the correlated equilibrium concept, instead of optimizing their own benefits alone, the users are aware of the best response for them to jointly optimize their strategies together and achieve the correlated equilibrium. Simulation results are presented to demonstrate the efficiency of the proposed scheme.
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基于相关均衡的点对点文件共享博弈
P2P系统通过提供分散的、自组织的、容错的文件共享服务而得到越来越广泛的应用。由于自私的用户没有从提供免费服务中获益,他们倾向于从其他用户那里下载文件,而不为其他用户上传文件,导致系统效率低下。本文提出了一种基于相关均衡的文件共享博弈,以提高用户的性能。我们首先用用户的预期延迟来描述用户的效用。然后,利用相关均衡的概念,用户不是单独优化自己的利益,而是意识到自己的最佳对策,共同优化策略,实现相关均衡。仿真结果验证了该方案的有效性。
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