摘要
针对传感器节点随机部署的无线传感器网络中存在大量冗余节点而导致大量节点能量浪费这一问题,提出了一种分布式的能量有效的冗余节点调度算法(ERSS算法).为了最大程度地节约能量,延长网络寿命,该算法使网络中的节点自主地判定自身是否为冗余节点.网络中只有必要数目的节点保持活跃状态来保证网络的完全覆盖,而冗余节点转为休眠状态来节约能量.文中给出了冗余节点判别规则、计算模型及判定流程.仿真结果表明了所提出算法比现有算法在节约网络能量及延长网络寿命上的优越性.
There are many redundant sensors in the wireless sensor networks where the sensors are randomly distributed, which will lead to much energy to be wasted.Focusing on this problem,a distributed energy-efficient redundant sensor scheduling(ERSS) algorithm is proposed.In order to save the network energy and prolong the network lifetime as much as possible,in the proposed algorithm,every sensor judges whether it is a redundant sensor or not by itself.In the network,only a necessary number of sensors keep working to maintain full coverage of the network,while the redundant sensors turn into sleep mode for energy saving.In the paper,the discrimination rule of redundant sensors is addressed.The calculation model is given and the decision making process is illustrated.Simulation results show that the proposed algorithm outperforms the existing algorithms on saving the network energy and prolonging the network lifetime.
出处
《信息与控制》
CSCD
北大核心
2010年第6期720-731,共12页
Information and Control
关键词
无线传感器网络
覆盖
能量有效
网络寿命
wireless sensor network
coverage
energy-efficient
network lifetime