A Survey on Energy Efficient Asynchronous Wisemac Protocol for Wireless Sensor Networks

This paper presents a review on energy efficient WiseMAC Protocol for wireless sensor networks. Among various MAC layer protocol WiseMAC is a known as one of the most energy efficient protocol. Non-persistent carrier sense multiple access (np-CSMA) and the preamble sampling technique are the main techniques used in basic WiseMAC protocol, they are used to reduce the consumption of power when energy is wasted in listening to idle medium. Here we investigate the WiseMAC protocol with the different important schemes that used in implementation of WiseMAC in sensor networks, these schemes are basically emphasizing on energy saving methods in WiseMAC, various modifications are done in original WiseMAC to make them more energy efficient; with the same motive of more energy efficiency, we propose adaptive WiseMAC protocol with dynamic duty cycle and the adaptive Contention Window.