摘要
LEACH(lowenergy adaptive clustering hierarchy)路由协议是无线传感器网络中被广泛应用的分层协议,但它存在簇头选择不合理和节点能耗不均衡的缺点。通过对LEACH协议节点能耗建模和分析,提出了一种均衡节点能耗的改进协议LEACH-B。最后用NS2对改进后的协议进行仿真,仿真结果表明,改进后的协议能均衡节点的能耗,有效地延长了整个网络的生存期。
LEACH （low-energy adaptive clustering hierarchy） routing protocol is widely used in wireless sensor network. But it has the disadvantage of irrationality of choosing cluster head and of unbalanced energy consumption of nodes. By modeling and analyzing the energy consumption of nodes in LEACH rou- ting protocol, an improved energy consumption balanced protocol LEACH-B is proposed. Finally, the im- proved protocol is simulated on NS2. The results of simulation show that the improved routing protocol can balance energy consumption of nodes and prolong the lifetime of the whole networks.
出处
《传感技术学报》
CAS
CSCD
北大核心
2008年第11期1918-1922,共5页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金资助(60672137)
教育部博士点基金资助(20060497015)
关键词
无线传感器网络
能耗均衡
仿真
LEACH
wireless sensor network
balanced energy consumption
simulation
LEACH
