Prolonging network lifetime through the use of mobile base station in wireless sensor networks
Oday D. Jerew, Weifa Liang · 2009
Prolonging network lifetime is one of the most important design objectives in energy-constrained wireless sensor net-works (WSNs). Using a mobile instead of a static base sta-tion (BS) to reduce or alleviate the non-uniform energy con-sumption among sensor nodes is an efficient mechanism to prolong the network lifetime. In this paper, we deal with the problem of prolonging network lifetime in data gathering by employing a mobile BS. To achieve that, we devise a novel clustering-based heuristic algorithm for finding a trajectory of the mobile BS that strikes the trade-off between the traf-fic load among sensor nodes and the tour time constraint of the mobile BS. We also conduct experiments by simulations to evaluate the performance of the proposed algorithm. The experimental results show that the use of clustering in con-junction with a mobile BS for data gathering can prolong network lifetime significantly.