【摘要】 无线网络因其分布性、独立性、移动性等特点,网络性能容易受到自私节点的影响.文中综述了无线网络中因自私节点的存在而带来的一些关键问题,特别对含有自私节点的无线环境中基于非合作博弈理论的路由机制进行了分析和研究.为了解决网络中自私节点的问题,目前研究人员主要提出了两种机制:基于信任度的机制和基于非合作博弈的激励机制.文中对上述两类机制进行了总结和分析,特别地,针对无线自组织网络和无线网状网络中各种激励机制进行了详细的研究.网络编码作为一种有效的技术有助于提高无线网络的性能,文中探讨了基于网络编码的优化对含有自私节点的无线网络性能的影响.同时还分析了非合作无线网络中节点共谋的问题,最后提出了当前非合作无线网络研究中存在的理论挑战及潜在的热点方向.更多还原

【Abstract】 Since wireless networks are usually distributed,independent and mobile,their performance could be affected by selfish nodes.In this paper,the authors focus on the issues of selfish nodes in wireless networks.Game based mechanisms are introduced to study the wireless network involving selfish nodes.In the literature,there are mainly two approaches to deal with the selfish nodes: credit based mechanisms and non-cooperative game and incentive based mechanisms.The authors summarize and analyze the typical routing mechanisms in these areas,and especially discuss the non-cooperative game and incentive based routing mechanisms for wireless ad-hoc networks and wireless mesh networks.Network coding as an efficient technology can help to improve network performance.They also study the optimization schemes based on network coding in wireless networks involving selfish nodes.Moreover,the authors discuss the collusion problem in non-cooperative wireless networks.Finally,they present the existing challenges and possible research directions in non-cooperative wireless networks.更多还原