A MAC Protocol by Applying Staggered Channel Model for Cognitive Radio Networks

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Title:	A MAC Protocol by Applying Staggered Channel Model for Cognitive Radio Networks
Authors:	C. Y. Chang;T. L. Wang;C. Y. Lin
Contributors:	資訊工程學系暨研究所
Keywords:	Cognitive radio network;Multichannel MAC protocol;CRNs
Date:	2014-04-01
Issue Date:	2015-03-13 16:06:37 (UTC+8)
Abstract:	Cognitive radio (CR) is a novel and promising spectrum management technique, which aims to cope with the spectrum scarcity problem occurring in unlicensed bands and alleviate the inefficient spectrum utilization of licensed bands. To ensure that the operation of licensed users will not be adversely affected and that the licensed bands can be efficiently utilized by unlicensed users, this paper proposes a cognitive radio MAC protocol called SMC-CR-MAC. When any primary user is detected, the proposed SMC-CR-MAC protocol applies Contiguous Channel Switching and Sender-Receiver Channel Swap rules to cope with the rendezvous, packet collision, and channel congestion problems. Simulation results show that the proposed SMC-CR-MAC protocol can significantly improve the network performance in terms of utilization of licensed bands, standard deviation of traffic load on each channel, and probability of successful rendezvous.
Relation:	Wireless Networks 20(7), pp.1873-1888
DOI:	10.1007/s11276-014-0713-2
Appears in Collections:	[Graduate Institute & Department of Computer Science and Information Engineering] Journal Article

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