Network selection in cooperative cognitive radio networks

Jin Lai*, Eryk Dutkiewicz, Ren Ping Liu, Rein Vesilo, Gengfa Fang

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

    8 Citations (Scopus)

    Abstract

    This paper studies network selection issues in cooperative cognitive radio networks (CRNs) where secondary users (SUs) have access to the combined spectrum pool of cooperating CRNs. Motivated by the service degradation of SUs caused by unnecessary network handover in cooperative CRNs, we formulate the network selection problem as a nonlinear optimization problem to minimize overall SU handover probability. We subsequently propose three network selection schemes and theoretically evaluate their performance using corresponding Markov chain models. Our numerical results indicate that a jointly-optimized network selection scheme which takes into account both the number of free channels and the traffic intensity of primary users in each CRN obtains the lowest probability of SU handover. Furthermore, compared to the random selection scheme, the jointly-optimized network selection scheme achieves significant reduction in SU handover probability while having no negative impact on other performance metrics of secondary users, such as blocking probability, forced termination probability and completion probability.

    Original languageEnglish
    Title of host publication11th International Symposium on Communications and Information Technologies, ISCIT 2011
    Place of PublicationPiscataway, NJ
    PublisherInstitute of Electrical and Electronics Engineers (IEEE)
    Pages378-383
    Number of pages6
    ISBN (Electronic)9781457712951, 9781457712937
    ISBN (Print)9781457712944
    DOIs
    Publication statusPublished - 2011
    Event11th International Symposium on Communications and Information Technologies, ISCIT 2011 - Hangzhou, China
    Duration: 12 Oct 201114 Oct 2011

    Other

    Other11th International Symposium on Communications and Information Technologies, ISCIT 2011
    CountryChina
    CityHangzhou
    Period12/10/1114/10/11

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