Coverage control protocol using multi-intersection estimation for wireless sensor networks
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摘要: 在保证一定的覆盖质量前提下,延长传感器网络生存时间,提出一种以充分必要条件判断网络节点冗余性的分布式覆盖控制协议.该协议通过多重交点判别法则(MIER,Multi-Intersection Estimation Rule)对无线传感器网络进行分布式节点的动态休眠控制,从理论上证明了MIER法则是判断网络节点冗余性的充分必要条件,能保证目标区域不出现覆盖盲点同时使活跃节点数降至最低.实验表明,MIER法则比CCP法则有了很大改进,消除由于法则本身引起的盲点数目,能更好的运用于覆盖控制协议中,更为准确的判断节点是否应该工作或休眠,是判别节点是否冗余的充分必要条件;同时比Ottawa法则更加高效的减少整个网络功耗,延长网络寿命.Abstract: In order to prolong the lifetime of wireless sensor networks(WSNs) while maintaining the required sensing coverage quality, a distributed control protocol which determines the redundant nodes in a necessary and sufficient condition was proposed. The protocol using MIER(multi-intersection estimation rule)dynamically controls the nodes to be working or sleeping in WSNs. It was theoretically proved that the MIER is a necessary and sufficient off-duty eligibility rule, which guarantees full coverage to target area and no blind point incurred while maintaining the number of on-duty nodes to a minimum. Simulation results demonstrate that, MIER was greatly improved than CCP rule, due to the elimination of blind points caused by protocol. It is better to utilize MIER rule for coverage control protocol, since it is a necessary and sufficient condition to judge redundant nodes, and more accurate to determine node into sleeping or not than some other rules. Coverage control protocol using MIER can be more efficient to reduce the network-s overall energy consumption and prolong the system lifetime than Ottawa protocol.
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