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http://dx.doi.org/10.12673/jkoni.2012.16.5.794

Performance Improvements in Guard Channel Scheme by Resource Prediction for Wireless Cognitive Radio-Based Cellular Networks  

Lee, Jin-Yi (Dept.of Electronics Engineering, Chungwoon University)
Publication Information
Journal of Advanced Navigation Technology / v.16, no.5, 2012 , pp. 794-800 More about this Journal
Abstract
In this paper, we propose a scheme for improving not only the utilization of frequency bands in the guard channel scheme but also the dropping rate of cognitive radio user in the wireless cognitive radio-based cellular network. The proposed scheme enables cognitive radio users to utilize the guard channel for servicing only handoff calls in normal times, but cognitive radio users must vacate the frequency channel when handoff call appearing. At this time our scheme ensures their seamless services for cognitive radio users, by predicting handoff call's appearance by MMOSPRED (Multi-Media One Step Prediction) method and then reserving the demanded channels for spectrum handoff calls. Our simulations show that our scheme performs better than other schemes; GCS(Guard Channel Scheme) and a scheme without prediction in terms of cognitive users call's dropping rate and resource utilization efficiency.
Keywords
Wireless cognitive radio-based cellular network; Cognitive radio user's call dropping rate; Resource utilization efficiency; Spectrum handoff call; MMOSPRED resource prediction;
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