Queues management of secondary users in a Cognitive Radio Network

In the Cognitive Radio Networks (CRNs), the Secondary Users (SUs) wait the release of a channel, to transmit their data packets. During the waiting phase, each SU can receive other packets that are organized on its own queue. Upon the release of a channel, the SUs begin the transmission. To avoid interference problems and conflict between SUs, it is necessary to implement a scheduler able to manage queues and assign the free channels to the SUs. In this work we apply an algorithm called Mono_scheduler and we offer a procedure, to assign the free channel to the SUs, manage the queues and ensure an equity value between transfer rates, by using Jain´s Fairness Index (JFI) as a metric.