A Fair Cognitive Channel Allocation Method for Cellular Networks

摘要

Rapid growth in the consumer base for mobile services against the backdrop of limited spectrum demands intelligent networks for optimum utilization of the allocated spectrum with minimal changes in the existing infrastructure. This paper introduces a novel three stage predictive channel allocation scheme called Intelligent Channel Allocation (ICA) based on long term call statistics, instantaneous call statistics and event driven decisions supported by cognitive radio techniques for an opportunistic but fair usage of spectrum. The scheme realizes a trade-off between enhanced spectrum utilization in moderate call traffic conditions and fast response to emergency situations modeled by a step input in call attempts. Experimental simulations show that the proposed scheme is superior to the existing schemes in emergency situations while providing a comparable performance with the existing hybrid channel allocation schemes at moderate call traffic levels making it very relevant for unforeseen situations.