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Priority queueing models for cognitive radio networks with traffic differentiation

Arash Azarfar, Jean-François Frigon and Brunilde Sansò

Article (2014)

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Cite this document: Azarfar, A., Frigon, J.-F. & Sansò, B. (2014). Priority queueing models for cognitive radio networks with traffic differentiation. EURASIP Journal on Wireless Communications and Networking, 2014. doi:10.1186/1687-1499-2014-206
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In this paper, we present a new queueing model providing the accurate average system time for packets transmitted over a cognitive radio (CR) link for multiple traffic classes with the preemptive and non-preemptive priority service disciplines. The analysis considers general packet service time, general distributions for the channel availability periods and service interruption periods, and a service-resume transmission. We further introduce and analyze two novel priority service disciplines for opportunistic spectrum access (OSA) networks which take advantage of interruptions to preempt low priority traffic at a low cost. Analytical results, in addition to simulation results to validate their accuracy, are also provided and used to illustrate the impact of different OSA network parameters on the average system time. We particularly show that, for the same average CR transmission link availability, the packet system time significantly increases in a semi-static network with long operating and interruption periods compared to an OSA network with fast alternating operating and interruption periods. We also present results indicating that, due to the presence of interruptions, priority queueing service disciplines provide a greater differentiated service in OSA networks than in traditional networks. The analytical tools presented in this paper are general and can be used to analyze the traffic metrics of most OSA networks carrying multiple classes of traffic with priority queueing service differentiation.

Uncontrolled Keywords

Cognitive radio; Dynamic spectrum access; Queueing theory; Priority queueing; Differentiation

Open Access document in PolyPublie
Subjects: 2500 Génie électrique et électronique > 2500 Génie électrique et électronique
2500 Génie électrique et électronique > 2525 Systèmes de télécommunications sans fil
Department: Département de génie électrique
Research Center: Non applicable
Funders: CRSNG / NSERC
Grant number: STPG365205
Date Deposited: 29 Jan 2019 15:32
Last Modified: 08 Apr 2021 10:43
PolyPublie URL: https://publications.polymtl.ca/3453/
Document issued by the official publisher
Journal Title: EURASIP Journal on Wireless Communications and Networking (vol. 2014)
Publisher: Springer
Official URL: https://doi.org/10.1186/1687-1499-2014-206


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