Performance enhancement of green MAC power saving protocol for corona-based wireless sensor networks

Wireless sensor networks(WSN) has got its unique features in all remote applications. Since it is operated in remote areas power consumption is the key issue. For a WSN the sensors are usually battery powered which are usually operated in Medium Access control layer. Organizing the WSN into different coronas in which the sink is centered is a simple technique to reduce the power consumption. Hence in this work, enhanced Green MAC protocol for corona based WSN is proposed. The proposed protocol will have a backlogged sensor, which has the buffered event data to be transmitted to the adjacent coronas from the event to the sink. This transmission is done using proper relay selection algorithm through which unnecessary wastage of power can be reduced. The simulation results compare the performance of existing Green MAC protocol with modified protocol with relay selection, in terms of network lifetime, delay, energy.