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Cognitive radio is a highly promising technology to efficiently solve the spectrum scarcity challenge and harmonize the networks heterogeneity. Through component spectrum sharing, secondary users (SUs) are able to opportunistically access licensed spectrum shared with the primary system. In the literature, spectrum sharing is normally investigated on the basis of the assumption that the spectrum sensing...
The next-generation wireless mobile networks are characterized by heterogeneity with a variety of different networks co-existence. To provide robust performance and flexible adjustment, we propose an Utility-based Weighted Prioritization (UWP) scheme for handoff operations in heterogeneous wireless networks. A multi-dimensional Markov chain is developed to analyze the performance of UWP, which is...
Cognitive radio wireless networks is an emerging communication paradigm to effectively address spectrum scarcity challenge. Spectrum sharing enables the secondary unlicensed system to dynamically access the licensed frequency bands in the primary system without any modification to the devices, terminals, services and networks in the primary system. In this paper, we propose and analyze new dynamic...
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