A Comparison Study on Dynamic Duty Cycle and Dynamic Channel Polling Approaches for Wireless Sensor Networks

Various dynamic MAC layer approaches have been adopted by researchers for achieving better performance of Wireless Sensor Networks (WSNs). Some of these approaches include Dynamic Duty-Cycle (DDC), multi-channel parallel transmissions, Dynamic Channel Polling (DCP) and adaptive traffic rate adjustments. This work provides a comparative analysis of the two schemes 'dynamic duty cycle' and 'dynamic channel polling' by comparing two protocols T-AAD and ADP-MAC taken as a representative protocol from each category respectively. Avrora simulator has been used for conducting experiments on mica-2 testbed, and energy & delay performance for the two schemes has been compared. Results have revealed that ADP-MAC outperforms T-AAD by reducing the transmission energy and latency, and hence it is more suitable for emerging applications of WSN & IoT.