摘要： 为解决当前大规模无线传感网部署中因分簇不当导致能量消耗过大、网络传输质量下降的问题,提出一种基于分区自感簇头的无线传感网数据传输保障方法。对整个传感网络分区内的节点指定射频信号最强的一个节点为簇头(CH)节点。在每一个分区内,通过计算每个簇成员节点(CM节点)的能量阈值,从中选择阈值最佳以及轮询时间最短的节点作为CH节点的备用节点,对触发这种轮换的最佳时刻进行分析计算,以便能够寻找到网络能耗水平最小化的约束条件,降低网络拓扑结构重建过程中的能量开支,从而提高无线传感网的生命周期,保障数据在传感网络存活时间内实现高效传输。实验结果表明,该机制能有效延长网络稳定时间,改善网络传输质量,并减少网络整体能耗。
关键词:
无线传感网,
能量阈值,
信号强度,
轮询机制,
数据传输,
分簇
Abstract: In order to solve the excessive energy consumption and network transmission quality decline caused by improper clustering in large scale Wireless Sensor Network(WSN) deployment,this paper presents a data transmission support method in WSN based on Self partition cluster head.It specifies the node with the strongest radio frequency signal as the Cluster Head(CH) node.In each area,by calculating the energy threshold of each Cluster Member (CM) node,it selects the node with best threshold and the shortest polling time as a backup node of the CH node.It analyzes and calculates the best time to trigger this rotation so as to find the constraints of network energy consumption minimization and reduce the energy expenditure during the reconstruction of the network topology,thereby improving the life cycle of WSN and guaranteeing efficient data transmission during the survival of WSN.Experimental results show that the proposed mechanism can effectively increase the stability time of network,improve the quality of network transmission,and save energy consumption in the whole network.
Key words:
Wireless Sensor Network(WSN),
energy threshold,
signal strength,
polling mechanism,
data transmission,
cluster
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