摘要
为平衡节点的能量消耗,降低失效节点数目和拓延网络寿命,提出基于低功耗自适应簇分层LEACH(low energy adaptive clustering hierarchy)阅值函数修正的簇间路由协议,即LEACH-O。推导节点的传输功率的最优值,通过引入能量消耗速度因子和距离因子修正阈值函数,降低簇头的能量消耗。仿真结果表明,LEACH-O协议存储了能量,拖长了第一个失效节点的发生时间,提高了网络寿命。与LEACH协议相比,LEACH-O协议的能量利用率提升了127.0%,第一个失效节点时间延缓了66.9%。
To balance energy consumption of wireless sensor networks,and prolong survival time of the networks,correcting threshold function of LEACH based nter-cluster routing protocol was proposed,which was marked as LEACH-O.The optimal power of transmitting of sensor node was computed,and rate of energy dissipation factor and distance factor were introduced to correct threshold function for LEACH protocol,which reduced the energy consumption of cluster head.Simulation results show that LEACH-O protocol is able to improve energy efficient,put off the time of the first failed node,and prolong the network time.Compared with LEACH,the energy efficiency of LEACH-O is improved by 127.0%,and the time of the first failed node is put off by 66.9%.
出处
《计算机工程与设计》
北大核心
2017年第7期1792-1797,共6页
Computer Engineering and Design
基金
河南省科技厅科技发展计划基金项目(152400410521)
