Abstract
In this paper, we consider a cognitive radio network with multiple Secondary Users (SUs). The SU packets are divided into SU1 packets and SU2 packets, and the SU1 packets have higher priority than the SU2 packets. Different from the conventional preemptive priority scheme (called Scheme I), we propose a non-preemptive priority scheme for the SU1 packets (called Scheme II) to guarantee the transmission continuity of the SU2 packets. By constructing a three-dimensional Markov chain, we give the transition probability matrix of the Markov chain, and obtain the steady-state distribution of the system model. Accordingly, we derive some performance measures, such as the interrupted rate of the SU1 packets and the interrupted rate of the SU2 packets. Lastly, we provide numerical experiments to compare the system performance between the two priority schemes.
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© 2016 Springer International Publishing Switzerland
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Zhao, Y., Yue, W. (2016). Performance Comparison Between Two Kinds of Priority Schemes in Cognitive Radio Networks. In: van Do, T., Takahashi, Y., Yue, W., Nguyen, VH. (eds) Queueing Theory and Network Applications. QTNA 2015. Advances in Intelligent Systems and Computing, vol 383. Springer, Cham. https://doi.org/10.1007/978-3-319-22267-7_7
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DOI: https://doi.org/10.1007/978-3-319-22267-7_7
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-22266-0
Online ISBN: 978-3-319-22267-7
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