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The placement of base stations in wireless sensor networks affect the energy consumption for communication between sensor node and base station. In this paper, the authors analyzed the performance of the zone based clustering protocol under varying position of base stations, different zone sizes and the effect on network life time with multiple base stations. While evaluating the communication overhead of various cluster sizes, they observed that the optimal cluster size for a given network is complex, depending on a range of parameters. Simulation results show that communication overhead decreases as they increase the number of zone in the network.
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