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Channel-Hopping Sequence and Rendezvous MAC for Cognitive Radio Networks

In cognitive radio networks (CRNs), two secondary users (SUs) need to meet on a channel among multiple channels within a finite time to establish a link, which is called rendezvous. For blind rendezvous, researchers have devised ample well-grounded channel hopping (CH) sequences that guarantee small...

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Autores principales: Paul, Rajib, Jang, Jiwoon, Choi, Young-June
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9416706/
https://www.ncbi.nlm.nih.gov/pubmed/36015706
http://dx.doi.org/10.3390/s22165949
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author Paul, Rajib
Jang, Jiwoon
Choi, Young-June
author_facet Paul, Rajib
Jang, Jiwoon
Choi, Young-June
author_sort Paul, Rajib
collection PubMed
description In cognitive radio networks (CRNs), two secondary users (SUs) need to meet on a channel among multiple channels within a finite time to establish a link, which is called rendezvous. For blind rendezvous, researchers have devised ample well-grounded channel hopping (CH) sequences that guarantee smaller time-to-rendezvous. However, the best part of these works lacks the impact of network factors, particularly channel availability and collision during rendezvous. In this study, a new CH scheme is investigated by jointly considering the medium access control (MAC) protocol for single-hop multi-user CRNs. The analysis of our new variable hopping sequence (V-HS) guarantees rendezvous for the asymmetric channel model within a finite time. Although this mathematical concept guarantees rendezvous between two SUs, opportunities can be overthrown because of the unsuccessful exchange of control packets on that channel. A successful rendezvous also requires the exchange of messages reliably while two users visit the same channel. We propose a MAC protocol, namely ReMAC, that can work with V-HS and CH schemes. This design allows multiple rendezvous opportunities when a certain user visits the channel and modifies the conventional back-off strategy to maintain the channel list. Both simulation and analytical results exhibited improved performance over the previous approaches.
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spelling pubmed-94167062022-08-27 Channel-Hopping Sequence and Rendezvous MAC for Cognitive Radio Networks Paul, Rajib Jang, Jiwoon Choi, Young-June Sensors (Basel) Article In cognitive radio networks (CRNs), two secondary users (SUs) need to meet on a channel among multiple channels within a finite time to establish a link, which is called rendezvous. For blind rendezvous, researchers have devised ample well-grounded channel hopping (CH) sequences that guarantee smaller time-to-rendezvous. However, the best part of these works lacks the impact of network factors, particularly channel availability and collision during rendezvous. In this study, a new CH scheme is investigated by jointly considering the medium access control (MAC) protocol for single-hop multi-user CRNs. The analysis of our new variable hopping sequence (V-HS) guarantees rendezvous for the asymmetric channel model within a finite time. Although this mathematical concept guarantees rendezvous between two SUs, opportunities can be overthrown because of the unsuccessful exchange of control packets on that channel. A successful rendezvous also requires the exchange of messages reliably while two users visit the same channel. We propose a MAC protocol, namely ReMAC, that can work with V-HS and CH schemes. This design allows multiple rendezvous opportunities when a certain user visits the channel and modifies the conventional back-off strategy to maintain the channel list. Both simulation and analytical results exhibited improved performance over the previous approaches. MDPI 2022-08-09 /pmc/articles/PMC9416706/ /pubmed/36015706 http://dx.doi.org/10.3390/s22165949 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Paul, Rajib
Jang, Jiwoon
Choi, Young-June
Channel-Hopping Sequence and Rendezvous MAC for Cognitive Radio Networks
title Channel-Hopping Sequence and Rendezvous MAC for Cognitive Radio Networks
title_full Channel-Hopping Sequence and Rendezvous MAC for Cognitive Radio Networks
title_fullStr Channel-Hopping Sequence and Rendezvous MAC for Cognitive Radio Networks
title_full_unstemmed Channel-Hopping Sequence and Rendezvous MAC for Cognitive Radio Networks
title_short Channel-Hopping Sequence and Rendezvous MAC for Cognitive Radio Networks
title_sort channel-hopping sequence and rendezvous mac for cognitive radio networks
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9416706/
https://www.ncbi.nlm.nih.gov/pubmed/36015706
http://dx.doi.org/10.3390/s22165949
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