移动P2P网络基于博弈论方法的协作激励机制

在移动P2P网络中，部分自私的移动节点只是大量地消耗已有网络资源而不提供自己的资源。考虑到移动P2P网络的资源有限性以及部分节点具有自私行为的特点，提出了一种基于博弈论的协作激励机制。该机制根据移动节点的不同贡献大小来提供不同网络服务质量，最大限度地鼓励了每个移动节点参与协作和共享。同时，详细描述和分析了协作激励机制中的网络资源分配策略，并且证明了该协作激励机制的博弈存在一个稳定的纳什（Nash）均衡。通过仿真实验发现，该激励机制有效地激发了移动节点间的协作，优化了整个网络的性能。同现有的协作激励策略相比，提高了数据包转发率等。

Cooperative incentive mechanism based on game theory in mobile P2P networks

Many selfish mobile peers consume much resource without any contribution in mobile P2P network. Considering the limitation of network resource and selfishness of peers, this paper proposed a cooperative incentive mechanism based on game theory. The mechanism provided peers with different network's service quality according to their contribution and therefore every peer was encouraged to cooperate with others or share their resource. This paper described and analyzed the resource allocation policy of cooperative incentive mechanism in detail. Besides, the existence of the steady Nash equilibrium in the game was also proven. Simulation and analysis results show that the incentive mechanism can encourage the cooperation among the peers and improve the network performance efficiently. Compared with current cooperative incentive mechanism, the mechanism can increase forwarding ratio of the packet.