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The specificity of overlay spectrum sharing in cognitive radio network, is that the secondary user has to handoff and vacate immediately the channel once the Primary User appears and reclaims it. Such handoff becomes more frequent specially in case of multichannel access since that in a wider band, a PU is likely to reclaim a part of the band more quickly, and the SU has to switch to a different set...
In this paper, we investigate a channel selection algorithm based on temporal characterization of spectrum holes. This algorithm is conceived to be implemented within a decentralized Radio Resources Management operation where decision making processes are executed at the mobile terminal side. Different scenarios are considered to test the effectiveness of this algorithm in improving the spectrum efficiency.
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