Energy Efficient Token Based MAC Protocol for Wireless Sensor Networks
In this paper, the authors propose on energy efficient token based MAC protocol for WSNs, in order to reduce energy consumption of each sensor node which is one of the important issues to prolong the network lifetime. WSN consists of a large number of small and low-cost sensor nodes powered by small batteries and equipped with various sensing devices. Due to limited energy in WSN energy efficiency is an important factor in designing a MAC protocol. To derogate energy consumption most of the MAC protocols in WSN exploits low duty-cycle; among those RMAC, HEMAC allows a node to transmit data packet for multi-hop in a single duty-cycle.