Analysis of Call Admission Control for Multiservice Cognitive Radio Networks

In Cognitive Radio Networks (CRNs), Call Admission Control (CAC) is an important functionality to ensure the Quality of Service (QoS) for Secondary Users (SUs). A Call Admission Control (CAC) scheme for multi-service Cognitive Radio Networks (CRNs) is investigated here. The authors adopt a Markov chain model to describe the procedure of the proposed CAC and spectrum handoff strategy. The Quality of Service (QoS) requirements, such as call blocking probability, call dropping probability, and spectrum utilization, are evaluated for each service class.