CR-DMAC: a MAC protocol for cognitive radio networks with directional antennas

Authors:
Victor Khoury;Spyridon Vassilaras;Constantinos B. Papadias
Affiliations:
Carnegie Mellon University, Pittsburgh;Athens Information Technology, Athens, Greece;Athens Information Technology, Athens, Greece
Venue:
Proceedings of the 4th International Conference on Cognitive Radio and Advanced Spectrum Management
Year:
2011

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Abstract

Directional wireless communication is known to significantly improve the capacity of wireless networks at the expense of more complex communication protocols. In this paper, CR-DMAC, a novel Medium Access Control protocol for IEEE 802.22 Cognitive Radio infrastructure based networks with directional antennas is presented. The performance of CR-DMAC is evaluated through simulation experiments on a custom-made simulator. We conclude that a significant increase in the number of cognitive network connections and decrease in the amount of control message overhead is achieved through the use of directional communication and CR-DMAC.