ES-MAC: Energy Efficient Sensor-MAC protocol for Wireless Sensor networks

Energy management is one of the main r e s ear ch issues associated with Wireless Sensor network. An optimum means of preserving energy must always be deployed. Energy management in networks is also considered as one of the most crucial topics in the development of green networks. In this paper, we propose a modified duty-cycle based MAC protocol named as ES-MAC (Energy Efficient Sensor MAC). It involves energy efficient mechanism for wireless sensor motes by making them sleep when idle and by reducing the number of transmitted packets using Selective Data Transmission (SDT). Sleep intervals are improved by using the concept of Dynamic Data Cycle (DDC). The proposed protocol is shown to be efficient by test bed implementation, which is our major contribution. We compared the results of ES-MAC with two control cases. TinyOS and Crossbow motes are used for implementing the nested C code.