摘要
在无线传感网络WSN中,由于电磁、核辐射的影响,使得传感节点无法与邻居节点通信,形成间歇失效节点。为此,提出了基于双通信模式的无线传感网络的可靠数据传输算法RDT-DMC。在RDT-DMC算法中,传感节点具有射频和声学双通信模式。信宿Sink采用集中分布方式收集节点的邻居节点变化信息,对间歇失效节点进行初步筛选,然后再利用基于奖惩机制,结合D-S证据理论DST和假设检验理论,识别间歇失效节点。若是间歇失效节点,就采用声学通信模式,抵御辐射影响,不受辐射影响后,恢复射频通信模式。仿真结果表明:与仅采用声学通信模式的无线传感网络相比,提出的RDT-DMC算法能够有效降低数据包端到端传输时延,提高能量利用率。
In Wireless Sensor Network （WSN） ,a sensor node failed to communicate with its neighbors due to the temporary failure in communication attributed to electro-magnetic or nuclear radiation exposure, and those nodes were named as intermittent failure nodes.Existing intermittent failure nodes improved the data packet loss rate,and increased the packet transmission delay. Therefore,reliable data transmission based on dual mode of communication （RDT-DMC） was proposed in this paper. In RDT- DMC algorithm,sensor nodes had dual mode of communication inclucling radio frequency and acoustic communication.Sink collected the changed neighbor list in centralized way, and preliminarily screening was done on the intermittent failure nodes.Then, RDT-DMC algorithm adopted dempster shafer theory and hypothesis testing to identify the intermittent failure nodes.Sensor nodes are in acoustic communication mode when they are intermittent failure nodes. Once they are intermittent failure nodes, acoustic communication mode was adopted to resist the radiation effect.After being no longer affected by radiation, ratio frequency communication mode was restored.Simulation results exhibit that comparing to wireless sensor network adopted only acoustic communication mode,the proposed RDT-DMC algorithm reduced average end-to-end delay and achieved better energy efficiency.
出处
《仪表技术与传感器》
CSCD
北大核心
2016年第11期123-126,共4页
Instrument Technique and Sensor
基金
江苏省高等院校高级工程师访问计划资助项目(2015FG030)
江苏高校品牌专业建设工程资助项目(PPZY2015A092)
关键词
无线传感网络
辐射
失效
声学通信
假设检验
wireless sensor network
radiation
fault
acoustic communication
hypothesis testing
