Efficient network lifetime for barrier coverage in heterogeneous sensor network

Wireless sensor networks has been the focus of a lot of research efforts recently. The barrier coverage problem is the fundamental issue in sensor networks, which minimizes the prob ability of intrusion detection through a barrier of sensor network attempting to cross a region of interest. The barrier coverage for heterogeneous lifetime has been improved with the employment of computational model called Voronoi diagram, for the deployment of sensors in region where intrusion is more and less energy consumption has increased the performance of the network. We have explored with the two protocols Constant state protocol and Variable state protocol deployed in a random deployment to enhance the lifetime and shows that the loss in potential network lifetime achieves higher efficiency when the sensor life-times are heterogeneous. The result describes that random deployment of the nodes with variable state protocol with less energy consumption than the nodes with constant state protocol in the barrier coverage of heterogeneous sensor network with steep increase of 65 percent in the network lifetime.