Aiming at the problems of the overall energy consumption and short life cycle from the low energy adaptive clustering hierarchy(LEACH)protocol,a method of energy optimization was proposed.The cluster head ratio was computed by combining the energy model,energy consumption of sending nodes and fused data.The threshold formula for cluster head selection in clus-tering stage was improved using the residual energy of node and the distance between this node and base station.In the clustering part of common nodes,the cluster size density was utilized to avoid a large gap among cluster sizes,and the cluster head was updated according to the proximity principle and cluster density scale.In the data transmission stage,cluster heads were classi-fied by introducing'hot zone'boundaries,and different types of cluster heads used different data transmission methods.The simulation results show that the proposed method can balance energy consumption and prolong life cycle in the network.
关键词
能量优化/低功耗自适应聚类协议/分簇/生命周期/热区/数据传输/阈值
Key words
energy optimization/low energy adaptive clustering hierarchy protocol/clustering/life cycle/hot spots/data trans-mission/threshold value
维普
万方数据