Optimal 2-Coverage by Heterogeneous Mobile Sensor Nodes Using Triangular Scheme

A wireless sensor network covers a Region Of Interest (ROI) with static sensor nodes. Mobile sensor nodes, which can move and deploy themselves find applications in unknown/hazardous situations. Mobile sensor nodes are equipped with limited power sources. Energy of mobile sensor nodes can be conserved by reducing their traveling distance and maximizing the utilization of sensed area. The total traveling distance must be balanced among the deployed nodes to increase network lifetime. This work proposes a novel method to 2-cover the ROI using heterogeneous mobile sensor nodes with minimum traveling distance and maximum utilization of sensed area.