基于伽马分布的传感器网络信任反馈收集算法

Algorithm of trust feedback collection in WSN based on gamma distribution

为了解决无线传感器网络信任管理系统信任反馈收集不足的问题,提出一种基于伽马分布的信任反馈收集算法。对时分复用节点休眠调度进行了认知与分解,指出了节点的严格异步唤醒策略是信任反馈收集不足的主要原因。在此基础上建立了总体设计模型,对节点休眠调度进行了调整,采用基于伽马分布的覆盖异步随机休眠调度来增加节点收集的信任反馈数量,从而避免了节点异步唤醒造成的信任反馈收集盲区。通过J-Sim仿真实验结果表明,该算法以较少的能耗代价增加了信任反馈收集数量。

To solve the problem of insufficient collection of trust feedback for trust manage system in wireless sensor network,an algorithm of gamma-distribution based on trust feedback collection（GTFC） is presented.Firstly,the sleeping scheduling of TDMA is recognized and decomposed.It is pointed out that the prime reason in the insufficient collection of trust feedback is the stringent asynch-ronous awakening of network nodes,and the general design model is constructed.Then the nodes sleeping scheduling is adjusted by increasing the quantity of the trust feedback collected by nodes according to gamma distribution based coverage to prevent the blind zone of trust feedback collection because of asynchronous awakening of network nodes.Finally,by J-Sim,the function of increasing the quantity of the trust feedback as well as energy optimization of the presented algorithm are demonstrated.