Service Differentiation in Cognitive Radio Networks: A Priority Queueing Model

Details Service Differentiation in Cognitive Radio Networks: A Priority Queueing Model Service Differentiation in Cognitive Radio Networks: A Priority Queueing Model

2012-03-29

arxiv.org/abs/1203.6413v1

Computer Science

Networking and Internet Architecture

16 pages, 13 figures and 2 tables

Scientific paper

The popularity of opportunistic spectrum access (OSA), implemented by cognitive radios (CRs), necessitates that these networks should be able to provide service differentiation for different classes of traffic. One of the classic schemes for such a goal is through priority queueing. As link interruptions in OSA networks are frequent, we discuss in this paper four priority queueing disciplines in the presence of interruptions: preemptive-resume, non-preemptive, exceptional non-preemptive and preemptive in case of occurrence of an interruption. Analytical results, in addition to simulation results to validate their accuracy, are provided.

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