Dynamic Channel Selection for Cognitive Femtocells

Gustavo Wagner Oliveira Da Costa, Andrea Fabio Cattoni, Preben Mogensen, Luiz A. Da Silva

Research output: Contribution to book/anthology/report/conference proceedingBook chapterResearchpeer-review


The ever-growing demand for mobile broadband is pushing towards the utilization of small cells, including metrocells, picocells and femtocells. In particular, the deployment of femtocells introduces significant challenges. First, the massive number of expected femtocells cannot be deployed using the traditional planning and optimization techniques. This leads to uncoordinated deployment by the end-user. Second, the high density of femtocells, including vertical reuse, leads to very different inter-cell interference patterns than the ones traditionally considered in cellular networks. And last, but not least, the possibility of having closed-subscriber-groups aggravates the inter-cell interference problems. In order to tackle these issues we consider the implementation of some aspects of cognitive radio technology into femtocells, leading to the concept of cognitive femtocells. This chapter focuses on state-of-art techniques to manage the radio resources in order to cope with inter-cell interference in cognitive femtocells. Different techniques are presented as examples of gradually increasing sophistication of the cognitive femtocells, allowing for dynamic channel allocation, dynamic reuse and negotiated reuse based on information exchanged with neighbor cells.
Original languageEnglish
Title of host publicationCognitive Radio and Networking for Heterogeneous Wireless Networks : Recent Advances and Visions for the Future
EditorsAndrea Fabio Cattoni, Luca De Nardis, Jocelyn Fiorina, Faouzi Bader, Maria-Gabriella Di Benedetto
PublisherSpringer VS
Publication date31 Jul 2014
ISBN (Print)978-3-319-01717-4
ISBN (Electronic)978-3-319-01718-1
Publication statusPublished - 31 Jul 2014
SeriesSignals and Communication Technology


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