Optimization of spectrum handoff with artificial bee colony algorithm

Abstract

Cognitive radio has been regarded as a technology that guarantees a significant increase in spectrum utilization efficiency. Depending on this technology; spectrum management, spectrum sensing and spectrum handoff have emerged. In cognitive radio networks, how the frequency channels are to be assigned between users is at the top of the newsworthy topics. In addition, it is also the current topic to reduce the delay to the minimum in the spectrum handoff process. In the case of minimizing a value, optimization algorithms should be utilized. In recent times, the widely used artificial bee colony algorithm has an important place among all the optimization algorithms. In this study, firstly designed spectrum handoff model is presented and then artificial bee colony based spectrum handoff algorithm is developed. In the developed algorithm, the channel availability characteristic is examined based on the position of the bees in the artificial bee colony algorithm in order to optimize the spectrum handoff delay. With the help of the algorithm developed using the artificial bee colony, the spectrum handoff delay of the secondary users is significantly reduced and total service time is increased.