一种基于两次报价博弈机制的安全中继选择方法  

Relay Selection to Ensure Security in Wireless Network Using Twice Quotation Mechanism Based on Game Theory

作　　者：洪颖[1] 黄开枝[1] 罗文宇[1] 林胜斌 

机构地区：[1]国家数字交换系统工程技术研究中心,河南郑州450002

出　　处：《信息工程大学学报》2014年第5期551-556,共6页Journal of Information Engineering University

基　　金：国家自然科学基金资助项目(61379006)

摘　　要：无线网络中,中继转发数据需要消耗自身的能量和计算资源,具有自私性。针对中继自私性导致数据发送中断、源节点安全速率降低的问题,提出了一种基于两次报价博弈机制的无线网络安全中继选择方法。该方法引入虚拟货币的形式鼓励和规范不同节点间的转发关系,并提出基于虚拟货币衡量的两次报价竞争博弈机制,中继根据转发数据所需消耗的能量等成本决定其报价,所有中继将提供的安全速率进行标价,并且中继两次报价的占优策略均为上报真实成本才能获得源节点支付的报酬,源节点根据中继所提供的安全速率和报价的多少选择使其安全速率增益最大的中继。仿真和分析表明,发送功率为15mW的功率条件下,相比传统方法,文章方法的安全速率提高40%。Relays in wireless networks consume their energy and computation resources in order to forward messages,thus being selfish,which interrupts message transmission and decreases secrecy rates. To address this problem,a Relay selection method to ensure the security of wireless network using twice quotation mechanism based on game theory has been proposed. The method introduces virtual currency,which encourages and regulates the cooperation relationship between different nodes,and proposes the incentive mechanism of twice quotation competition based on virtual currency measurement. Relays decide their quotation based on the energy and computing cost and mark secrecy as a price,their dominant strategy is to report the true cost in twice quotation competition,only in this way can they get reward by source nodes. According to the secrecy rate and quotation,source nodes will select one relay,which makes the maximum secrecy rate gains. Simulation shows that the proposed method improves the average secrecy rate by 40% compared with the conventional relay selection method,when the transmitting power is 15 mW.

关 键 词：无线网络 物理层安全 博弈论 激励机制 二次报价 

分 类 号：TN918.8[电子电信—通信与信息系统]