Energy Conservation Using RR Algorithm in Dynamic Cluster Based WSN

The energy consumption during the cluster head selection phase in a hierarchal and dynamic cluster based wireless sensor network had been considered insignificant in the previous research works. However, we have shown in our previous works that around 25% network energy is exhausted only in repeated cluster formation process of the network. We have proposed a round rotation (RR) protocol, which can be used in any dynamic cluster based network that can substantially conserve the overhead energy (the energy consumed in the random cluster head setup phase) of the network. It was shown that 20% of the total network energy consumed in data transmission can be conserved by minimizing the transmission of unnecessary control messages in the cluster setup phase. This paper also compares the overhead energy consumed in our proposed RR mechanism with three different mechanisms, (1) generic dynamic cluster based protocols, (2) centrally controlled dynamic cluster based protocols and (3) (re-clustering avoidance RCA) protocols. Results show that network lifetime can be improved by 25% using our proposed RR technique. The optimal value of cluster heads has also been calculated considering the network energy consumed in the different protocols.