The book discusses multiple base stations(BSs) approach in wireless
sensor networks(WSN). Firstly, We focus on the fundamental question
concerning the limits on the network(NW) lifetime in WSN. We
derived upper bounds on the NW lifetime when multiple BSs are
deployed along the boundary of the sensing field. We obtained
optimal BSs locations that maximize the lifetime bounds. In a
rectangular region, we obtained closed-form expressions of lifetime
bound and optimal BSs location for single BS and two BSs. For more
BSs, obtaining joint optimal BSs location is prohibitively complex.
Therefore, we propose less complex sub-optimal approach. We also
validated the results using rigorous simulation. Next, we proposed
energy efficient low-complexity algorithms algorithms for placement
of multiple mobile BSs in WSN. We developed algorithms to
dynamically choose the BSs locations to improve network lifetime.
We showed that these algorithms enhances lifetimes and amount of
data delivered compared to single BS scenario as well as multiple
static BSs scenario. We also briefly show that employing
cooperative diversity enhances lifetime of WSNs.
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