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In this paper, the authors compare problems of cluster formation and cluster-head selection between different protocols for data aggregation and transmission. They focus on two aspects of the problem: how to guess number of clusters required to proficiently consume available sources for a sensor network, and how to select number of cluster-heads to cover up sensor networks more proficiently. A sensor in Wireless Sensor Networks (WSNs) can communicate directly only with other sensors that are within a radio range in a cluster. However, in order to enable communication between sensors not within communication range, they must form new clusters in distributed sensors.
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