The limitation of sensor energy has motivated substantial
research on WSNs. The bulk of the efforts have been dedicated
to minimizing the energy consumed in communication. The
network and link layers have received the most notable
attention. At the network layer, the focus has been on energyaware
route setup [1]. The main idea is to minimize the
transmission power, which is proportional to distance squared,
through the pursuance of multi-hop data forwarding so that the
cumulative transmission energy is reduced compared to direct
sensor to base-station interactions. Energy-efficient MAC
protocols tackle the energy wastage due to collisions among the
radio transmission of nodes, keeping the receiver unnecessarily
active and the excessive state changes of the radio circuit [2].