5th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications

Research Article

Priority channel selection based on detection history database

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  • @INPROCEEDINGS{10.4108/ICST.CROWNCOM2010.9178,
        author={Johanna Vartiainen and Marko H\o{}yhty\aa{} and Janne Lehtom\aa{}ki and Timo Br\aa{}ysy},
        title={Priority channel selection based on detection history database},
        proceedings={5th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications},
        publisher={IEEE},
        proceedings_a={CROWNCOM},
        year={2010},
        month={9},
        keywords={Cognitive radio Databases Delay History Object recognition Sensors Signal detection},
        doi={10.4108/ICST.CROWNCOM2010.9178}
    }
    
  • Johanna Vartiainen
    Marko Höyhtyä
    Janne Lehtomäki
    Timo Bräysy
    Year: 2010
    Priority channel selection based on detection history database
    CROWNCOM
    IEEE
    DOI: 10.4108/ICST.CROWNCOM2010.9178
Johanna Vartiainen1, Marko Höyhtyä2, Janne Lehtomäki1, Timo Bräysy1
  • 1: University of Oulu, Centre for Wireless Communications (CWC), P.O. Box 4500, FIN-90014 University of Oulu, FINLAND
  • 2: VTT Technical Research Centre of Finland, P.O. Box 1100, FIN-90571Oulu, FINLAND

Abstract

This paper proposes a new database-based two-stage channel selection method for cognitive radios. The proposed method consists of two stages, namely the database collection and signal detection parts. The database collects information about channels. When a cognitive radio needs to find an unoccupied channel for a transmission, it sends a query to the database. Based on the information collected to the database, the most probably unoccupied channels at requesting time are the best candidates when searching unoccupied channels, and these channels are submitted to the cognitive radio. The cognitive radio performs first the power level detection. Based on the power level information delivered from the database, a full signal detection is performed next to the channel with low enough power level to ensure that the channel is really unoccupied.