Please use this identifier to cite or link to this item: http://hdl.handle.net/11144/3662
Title: A Novel Reservation-based MAC Scheme for Distributed Cognitive Radio Networks
Authors: Dinis, Rui
Luis, Miguel
Oliveira, Rodolfo
Bernardo, Luis
Keywords: Cognitive radio (CR)
Medium access control
Modeling and performance analysis
Issue Date: 2017
Publisher: IEEE Publisher
Abstract: This paper presents a novel medium access control medium access control (MAC) for distributed single-channel cognitive radio networks (CRNs) denominated cognitive radio reservation MAC (C2RMAC). C2RMAC is intended to be adopted by the nonlicensed users and introduces a double stage scheme to schedule each node's transmission. In this way, C2RMAC increases the use of the spectrum left free by the licensed users, when compared with other protocols. An important contribution of this paper is the assumption of a heterogeneous spectrum sensing condition, i.e., the assumption that different nonlicensed users may sense different levels of channel occupancy. We derive an analytical model to compute the performance of the proposed protocol by adopting innovative concepts to tackle the heterogeneous sensing condition. Several simulation results, including the aggregated throughput and the packet service time, evaluate the performance of C2RMAC and successfully validate the proposed model. Finally, C2RMAC is compared with other state-of-the-art cognitive radio MAC protocols, showing the effectiveness of the proposed solution.
Peer reviewed: yes
URI: http://hdl.handle.net/11144/3662
metadata.dc.identifier.doi: 10.1109/TVT.2016.2605718
ISSN: 0018-9545
Publisher version: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7559812
Appears in Collections:DCT - Artigos/Papers

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