Date Added: Apr 2012
Energy conservation has been an important area of interest in Wireless Sensor Networks (WSNs). Medium Access Control (MAC) protocols play an important role in energy conservation. In this paper, the authors describe CSMA based MAC protocols for WSN and analyze the simulation results of these protocols. They implemented S-MAC, T-MAC, B-MAC, B-MAC+, X-MAC, DMAC and Wise-MAC in TOSSIM, a simulator which unlike other simulators simulates the same code running on real hardware. Previous surveys mainly focused on the classification of MAC protocols according to the techniques being used or problem dealt with and presented a theoretical evaluation of protocols.