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提出了一种基于死亡节点与半径调度的低功耗自适应集簇分层型(LEACH)覆盖保持协议,对簇头的随机选择机制进行了阈值的联合优化,采用泰森多边形对簇头节点进行Voronoi图划分,并根据簇头节点和簇内节点覆盖半径的不同进行分簇.在增大簇头节点通信半径及减小簇内节点的通信半径时,同时考虑网络中死亡节点数目,修正簇头节点的阈值选择公式,根据该阈值对网络的簇数重新选择和分簇.仿真结果表明,该算法对网络的覆盖度可保持在1 700轮左右,提高了网络的数据传输能力,延长了生命周期.
A Low Power Adaptive Cluster Hierarchy (LEACH) overlay and keep protocol is proposed based on death nodes and radius scheduling. Threshold joint optimization is applied to the random selection mechanism of cluster heads. Thyssenberg polygon is applied to cluster head node Voronoi diagram is divided and cluster nodes are clustered according to the different coverage radius of cluster head node and cluster node.When increasing the communication radius of cluster head node and reducing the communication radius of nodes in cluster, taking into account the number of dead nodes in the network, According to the threshold, the number of clusters in the network is re-selected and clustered. The simulation results show that the algorithm can keep the coverage of the network around 1,700 rounds and improve the data transmission capacity of the network and extend The life cycle.