Paper Title
A Review on Lifetime Extension of Wireless Sensor Networks by Solving SET K-Cover Problem

In last two decades, wireless sensor networks (WSNs) are extensively being implemented in various state-of-theart technologies such as device-to-device, machine-to-machine, smart grids and Internet-of-Things. Due to the limited battery-powered sensors, it is imperative to utilize their energy efficiently in order to continue the network operation for the maximum achievable duration. Thus, network lifetime (NL) extension approaches have drawn the attention of many researchers due to their significant role in maximizing the un-interrupted performance of energy-limited WSNs. This paper reviews the set of NL extension approaches in WSNs in terms of configurations, applications, and optimality. Keywords - Wireless sensor network, Disjoint subsets, Coverage, Lifetime