Dynamic duty cycle based MAC protocols-A Comprehensive Survey

Sensor nodes work cooperatively to achieve a common objective in WSNs. These sensors are powered by battery cells. How to enhance the lifetime of the sensor nodes is still an area of research and several researchers attempted to enhance the lifetime of sensor nodes. The mechanism of the duty cycle provides a way to mitigate unnecessary power consumption in sensor networks. This paper presents a comprehensive survey of dynamic duty cycle schemes and a framework that provides a smart dynamic duty cycle mechanism for WSNs. The proposed framework assigns duty cycles to the sensor nodes based on their network traffic rate.