An Energy-Efficient Division-Frame MAC Protocol for Wireless Sensor Networks

In order to decrease the energy consumption in idle listening of each sensor node and improve MAC(media access control) protocol,a novel energy-efficient division-frame MAC(DF-MAC) protocol is proposed for wireless sensor networks.DF-MAC allows sensor nodes to reduce their listening time by setting multiple division-frames,which will then reduce the energy consumption in communications with other nodes.DF-MAC has two main advantages,i.e.low duty cycle and small number of collisions.The minimization of collisions number in DF-MAC can save the energy required by retransmission of corrupted packets.Simulation results show that DF-MAC outweighs existing MAC protocols in the aspect of energy consumption.