An efficient radio resource management scheme for cognitive radio networks

Authors:
Chau-Pham Thi Hong;Hyung-Seo Kang;Insoo Koo
Affiliations:
School of Electrical Engineering, University of Ulsan, Ulsan, Republic of Korea;School of Electrical Engineering, University of Ulsan, Ulsan, Republic of Korea;School of Electrical Engineering, University of Ulsan, Ulsan, Republic of Korea
Venue:
ICIC'10 Proceedings of the Advanced intelligent computing theories and applications, and 6th international conference on Intelligent computing
Year:
2010

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Abstract

Cognitive radio network is proposed to better spectrum utilization. In this network, secondary users (SUs) can use the spectrum band reserved for primary users (PUs) without generated interference. And SU has to vacate the channel when PU arrives. In order to improve the system performance and guarantee the QoS requirements, we propose an efficient radio resource management scheme with buffering for new SUs and interrupted SUs, and channel reservation for interrupted SUs. Two dimensional Markov chain is used to describe and analyze the performance of the proposed efficient radio resource management scheme. The blocking probability, the forced termination probability, the non-completion probability and waiting time are derived for SUs. Simulation results show that the proposed approach can reduce the SU non-completion probability.