Optimal Number of Clusters in Wireless Sensor Networks with Mobile Sink
C. P. Gupta, Arun Kumar · 2013
Wireless Sensor Networks (WSNs) employ tiny sensor nodes to observe field and send data from the field to a Base Station. The base station is generally at a fixed location away from the observed field. However, such networks have limited life due to draining of batteries of nodes near the base station quickly in comparison to the nodes away from the base station. Further, data from nodes in close proximity have very little or no variation. Sending data from all the nodes to base station will require larger energy due to longer distances or multiple hops. Clustering has been found to be an effective solution for such networks. However, efforts to find optimal number of clusters are limited to WSNs with static sink. In this paper, we present an analysis of optimal number of cluster in such networks. The theoretical analysis is supported by simulation results.