A Comparative Study on Prominent Strategies of Cluster Head Selection in Wireless Sensor Networks

Wireless sensor networks (WSNs) have an imprint in every aspect of human life from very small to large-scale application. On one hand, energy-constrained sensor nodes are expected to run for a long duration. On the other hand, designing and maintaining sustainable WSNs is a very major issue nowadays. It may be very costly either to replace expired batteries or even impossible in hostile environments. So, there is a necessity to conserve the energy of the nodes so as to extend the network lifetime. After a deep review of the literature, we found that network lifetime can be extended by dividing it into groups (clusters). Decisions regarding all the operations in all groups are made by respective cluster heads (CHs). But selecting the best CHs is a critical issue to be resolved so as to utilize energy consumption most efficiently. This study can be a recommendation for researchers while optimally selecting WSN CHs.