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为解决无线传感器网络中继节点设置位置不合理而导致的网络构建成本高、网络整体寿命低等问题,提出了一种基于贪婪准则的中继节点布局算法.该算法采用能耗均衡率和网络总能耗等性能评价标准,分别对最近贪婪准则、定向贪婪准则和角度最小贪婪准则进行了多角度的对比分析,并引入数据流向限制、通信容量和数据最大转送次数,对节点数据传输路径进行约束及优化.实验结果表明,最近贪婪准则能耗少,网络中各个节点的能耗均衡,可给出合理的中继节点布设位置,有效降低网络的整体能耗.
In order to solve the problems of high network construction cost and low overall lifetime of the wireless sensor network, this paper proposes a greedy algorithm based relay node layout algorithm, which uses energy consumption equalization rate and network Total energy consumption and other performance evaluation criteria, respectively, the recent greedy criterion, directed greedy criterion and the angle of minimum greed criterion from a multi-angle comparative analysis, and the introduction of data flow restrictions, communication capacity and the maximum number of data transfer, the node data transmission path Constraints and optimization.Experimental results show that the recent greedy rules consume less energy and each node in the network has equal energy consumption and can provide reasonable placement of relay nodes and effectively reduce the overall energy consumption of the network.