Over-hearing for Energy Efficient in Event-Driven Wireless Sensor Network

In this paper, we introduce a new energy efficient medium access control (MAC) protocol for event-driven sensor networks. The event-driven wireless sensor networks do not often have much data to send. When an alarm occurs, many sensors in the network send the same message at the same time. These redundant communications lead to an energy waste due to many transmissions of redundant data and collisions in the network. By using over-hearing message, we propose a new method to solve this problem in order to save energy and to maximize the lifetime of the sensor networks