Background: Wireless sensor network has become very popular due to its
wide range of applications such as environmental monitoring, precision agriculture,
industrial site monitoring, target tracking, wildlife prevention and military applications.
In most of the cases, the sensors are deployed in unattended environment.
Sensor nodes are powered by batteries and frequent replacement of batteries is not
an easy task. With this constraint, the sensor nodes must conserve energy and prolong
the life time as much as possible. Methods: Many protocols are proposed at different layers to
conserve energy. In this paper, we explore the current MAC protocols and propose an efficient
MAC protocol for achieving energy efficiency using leader follower communication mechanism.
Results: Through simulation, we prove the efficiency of the proposed solution compared to most
used MAC protocols in wireless sensor networks. Conclusion: By using two MAC protocol stack,
the proposed MAC reduces inter zone collisions and avoids intra zone collisions. By implimenting
duty cycle as part of MAC protocol, we introduce sleep schedule to save idle energy.