Spectrum Harvesting and Sharing in Multi-Hop CRNs Under Uncertain Spectrum Supply

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Provided by: Institute of Electrical and Electronics Engineers
Topic: Mobility
Format: PDF
The essential impediment to apply Cognitive Radio (CR) technology for efficient spectrum utilization lies in the uncertainty of licensed spectrum supply. In this paper, the authors propose a novel architecture for spectrum harvesting and sharing, and investigate the joint routing and frequency scheduling problem in multi-hop Cognitive Radio Networks (CRNs) under uncertain spectrum supply. They introduce a new service provider, Secondary Service Provider (SSP), to facilitate the accessing for Secondary Users (SUs). They model the vacancy of available bands with a series of random variables, and mathematically describe the corresponding frequency scheduling and flow routing constraints.
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