In this paper, we present a malicious node detection scheme using confidence-level evaluation in a grid-based wireless sensor network. The sensor field is divided into square grids, where sensor nodes in each grid for...In this paper, we present a malicious node detection scheme using confidence-level evaluation in a grid-based wireless sensor network. The sensor field is divided into square grids, where sensor nodes in each grid form a cluster with a cluster head. Each cluster head maintains the confidence levels of its member nodes based on their readings and reflects them in decision-making. Two thresholds are used to distinguish between false alarms due to malicious nodes and events. In addition, the center of an event region is estimated, if necessary, to enhance the event and malicious node detection accuracy. Experimental results show that the scheme can achieve high malicious node detection accuracy without sacrificing normal sensor nodes.展开更多
无线传感网络低功耗路由的研究对于延长无线传感网络的生存周期具有重要的意义。针对多种类型数据同时采集的异构无线传感器网络,提出了LEACH改进协议—可变通信周期策略的能量均衡成簇协议ACPSEB-LEACH(Alterable Communication Period...无线传感网络低功耗路由的研究对于延长无线传感网络的生存周期具有重要的意义。针对多种类型数据同时采集的异构无线传感器网络,提出了LEACH改进协议—可变通信周期策略的能量均衡成簇协议ACPSEB-LEACH(Alterable Communication Period Strategy and Energy Balanced-LEACH),该协议从抑制节点数据发送量方面出发,将数据采集周期与数据通信周期分离,采取簇内可变通信周期策略以减少部分节点的能量消耗。在此基础上,引入节点活跃度因子进行簇头选举公式优化和成簇优化,实现全局网络能量均衡。仿真表明,改进后的协议在延长网络生存周期、平衡全局能量上有更好的效果。展开更多
文摘In this paper, we present a malicious node detection scheme using confidence-level evaluation in a grid-based wireless sensor network. The sensor field is divided into square grids, where sensor nodes in each grid form a cluster with a cluster head. Each cluster head maintains the confidence levels of its member nodes based on their readings and reflects them in decision-making. Two thresholds are used to distinguish between false alarms due to malicious nodes and events. In addition, the center of an event region is estimated, if necessary, to enhance the event and malicious node detection accuracy. Experimental results show that the scheme can achieve high malicious node detection accuracy without sacrificing normal sensor nodes.
文摘无线传感网络低功耗路由的研究对于延长无线传感网络的生存周期具有重要的意义。针对多种类型数据同时采集的异构无线传感器网络,提出了LEACH改进协议—可变通信周期策略的能量均衡成簇协议ACPSEB-LEACH(Alterable Communication Period Strategy and Energy Balanced-LEACH),该协议从抑制节点数据发送量方面出发,将数据采集周期与数据通信周期分离,采取簇内可变通信周期策略以减少部分节点的能量消耗。在此基础上,引入节点活跃度因子进行簇头选举公式优化和成簇优化,实现全局网络能量均衡。仿真表明,改进后的协议在延长网络生存周期、平衡全局能量上有更好的效果。
