Energy Efficient Cluster Head Selection Using Cognitive Radio in WSN

Abstract

Abstract In this paper, taking account of the number of channel allocation and the quality of spectrum channels from the global and the instant point of view, we propose two CSN routing metrics. In the first routing metric, the delivery success probability through all possible channels is defined in the constraint that only one retransmission is permitted to reduce rerouting. Similarly, the second routing metric considers the average transmission delay overall possible channels are presented. Based on the two routing metrics, the related routing algorithms are then designed, in which the optimal route is determined in an ON-demand route style. To increase the practicability, the channel assignments are not permanent and any relay nodes carrying packets could choose the channel with the largest routing metric at that time. We conduct extensive simulations, which validates the route performance of our routing schemes compared with other CSN routing protocols. It has been proved that proposed protocols reduces the number of re transmission and delay and increases the throughput compared to the existing routing protocols.