Towards energy balancing in heterogeneous Wireless Sensor Networks

In Wireless Sensor Networks (WSNs), there are two major factors which minimize the performance of the network. The one is the void hole which occurs in a particular region due to unavailability of forwarder nodes. The other one is the presence of energy hole near the sink due to death of the nodes. An optimum transmission strategy is the need in this case in order to maximize the network lifetime via hole alleviation. To this end, we provide a solution that is able to optimize the network performance through balance transmission strategy by equally dividing the network into number of sectors to balance the energy among the nodes. Two types of nodes are considered, the one with minimum energy level are normal nodes, the other one with maximum energy level are super nodes. Void hole is removed while selecting super node as a data forwarder in each region and energy hole is alleviated while selecting super node as a forwarder for data transmission in case when nodes near the sink exhaust their energy and die out.