Optimization of MAC mechanisms for energy management in wireless sensor networks

Abstract

In this thesis,we improve the RI-MAC protocol by introducing a short frame identifier to notify the sender when the receiver wakes up. This resolution reduces idle listening,which increases energy performance.When the sender node receives a short frame identifier,it cooperates with neighboring senders, which minimizes collisions.Our protocol is called:a Cooperative Short Frame Identifier Receiver Initiated MAC protocol,COSFI-RIMAC is an asynchronous MAC protocol cooperative service cycle initiated by the receiver.The imulation result on the NS2 simulator shows that the COSFI-RIMAC mechanism reduces power consumption,produces minor latency,and increases the rate of packet delivery.