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Self\u2010organization techniques will allow femtocells to integrate themselves into the network, learn about their environment, and adjust their parameters (power, frequency) accordingly. In this paper, a new spectrum mobility management algorithm is proposed. It allows intelligent use of the spectrum by secondary user (femtocell guest user) accessing spectrum holes unoccupied by primary users (subscriber user) and handing over to new channels or femtocells when primary user appears. Our solution aims to have more adaptive and aware communication system, which can make better use of available natural resources.<\/jats:p>","DOI":"10.1002\/nem.2019","type":"journal-article","created":{"date-parts":[[2018,3,15]],"date-time":"2018-03-15T10:56:58Z","timestamp":1521111418000},"source":"Crossref","is-referenced-by-count":5,"title":["Spectrum mobility management in cognitive two\u2010tier networks"],"prefix":"10.1002","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2922-0280","authenticated-orcid":false,"given":"Kaouthar","family":"Sethom","sequence":"first","affiliation":[{"name":"SMS Research Unit, Enicarthage University of Carthage  Tunisia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guy","family":"Pujolle","sequence":"additional","affiliation":[{"name":"LIP6 University of Paris 6  France"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2018,3,13]]},"reference":[{"key":"e_1_2_8_2_1","unstructured":"Report of the Spectrum Efficiency Working Group Federal Communications Commission Spectrum Policy Task Force Washington DC USA Nov.2008."},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/9780470686812"},{"issue":"3","key":"e_1_2_8_4_1","article-title":"Handover management scheme in LTE femtocell networks","volume":"5","author":"Badri TFZ","year":"2013","journal-title":"Int J Comput Sci Inform Technol (IJCSIT)"},{"key":"e_1_2_8_5_1","doi-asserted-by":"crossref","unstructured":"M.Islamet al. 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