Augmented Random Access MAC Protocol for Cognitive Radio Network (ACR-MAC)

In this paper, we have proposed an augmented random access MAC protocol for cognitive radio network (CRN) called ACR-MAC. We have presented analytical framework for the proposed protocol, and developed closed form expressions for saturated throughput and average packet delay. The performance of the proposed protocol has been examined with the performance of cognitive radio MAC protocol which was developed based on the well-known distributed coordination function (DCF) which deploys two medium access mechanisms: the basic and RTS/CTS. The proposed MAC protocol shows promising performance in terms of saturated throughput and average packet delay over the conventional random access MAC protocol proposed for CRN.