Efficient Energy Management to Prolong Lifetime of Wireless Sensor Network
Hung-Chin Jang, Hon-Chung Lee · InTech eBooks · 2010
In this paper we introduced a framework of five-step methodology to carry out detection range adjustment in a wireless sensor network. These steps are position determination, detection range partition, grid structure establishment, detection power minimization, and detection power adjustment. We proposed a Voronoi dEtection Range Adjustment (VERA) method that utilizes distributed Voronoi diagram to delimit the responsible detection range of each sensor. All these adjustments are under the guarantee that the detection abilities of sensors are above a predefined threshold. We then use Genetic Algorithm to optimize the optimal detection range of each sensor. Simulations show that the proposed VERA outperforms Maximum Detection Range, Kcovered and Greedy methods in terms of reducing the overlaps of detection range, minimizing the total energy consumption, and prolonging network lifetime, etc.