Wireless sensor networks (WSN) present wide-ranging variety of real time applications for advance purposes. WSN can collect and process enormous amount of data from environment like weather, pollution, traffic conditions, industrial process monitoring, and condition based maintenance. But due to lower sensing range of these networks, dense networks are required, this bring the necessity to attain a well-organized medium access (MAC) protocol subject to power constraints. In this paper, Sensor – MAC protocol have been simulated for demonstrating saving in the energy consumption from different sources of energy waste like idle listening, collision, overhearing and control overhead.

WSN, MAC, Idle listening, Latency analysis, Sleep-wake up cycle

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