naa a22 4500 510798055 CHVBK 20180411083343.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s11277-013-1128-6 doi (NATIONALLICENCE)springer-10.1007/s11277-013-1128-6 A Fittingness Factor-Based Spectrum Management Framework for Cognitive Radio Networks [Elektronische Daten] [Faouzi Bouali, Oriol Sallent, Jordi Pérez-Romero, Ramon Agustí] In order to increase cognitive radios (CRs) operation efficiency, there has been an increasing interest in strengthening awareness level about spectrum utilisation. In this respect, this paper proposes to exploit the fittingness factor concept to capture the suitability of spectral resources exhibiting time-varying characteristics to support a set of heterogeneous CR applications. First, a new knowledge management functional architecture for optimizing spectrum management has been constructed. It integrates a set of advanced statistics capturing the influence of the dynamic radio environment on the fittingness factor. Then, a knowledge manager (KM) exploiting these statistics to monitor time-varying suitability of spectrum resources has been proposed to support the spectrum selection (SS) decision-making process. In particular, a new Fittingness Factor-based strategy combining two SS and spectrum mobility (SM) functionalities has been proposed, following either a greedy or a proactive approach. Results have shown that, with a proper fittingness factor function, the greedy approach efficiently exploits the KM support at low loads and the SM functionality at high loads to introduce significant gains in terms of the user dissatisfaction probability. The proactive approach has been shown to maintain the introduced performance gain while minimizing the signalling requirements in terms of spectrum handover rate. Springer Science+Business Media New York, 2013 Spectrum management nationallicence Cognitive radio nationallicence Fittingness factor nationallicence Bouali Faouzi Department of Signal Theory and Communications (TSC), Universitat Politècnica de Catalunya (UPC), c/ Jordi Girona, 1-3 Campus Nord—Edifici D4, 08034, Barcelona, Spain aut Sallent Oriol Department of Signal Theory and Communications (TSC), Universitat Politècnica de Catalunya (UPC), c/ Jordi Girona, 1-3 Campus Nord—Edifici D4, 08034, Barcelona, Spain aut Pérez-Romero Jordi Department of Signal Theory and Communications (TSC), Universitat Politècnica de Catalunya (UPC), c/ Jordi Girona, 1-3 Campus Nord—Edifici D4, 08034, Barcelona, Spain aut Agustí Ramon Department of Signal Theory and Communications (TSC), Universitat Politècnica de Catalunya (UPC), c/ Jordi Girona, 1-3 Campus Nord—Edifici D4, 08034, Barcelona, Spain aut Wireless Personal Communications Springer US; http://www.springer-ny.com 72/3(2013-10-01), 1675-1689 0929-6212 72:3<1675 2013 72 11277 https://doi.org/10.1007/s11277-013-1128-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1128-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bouali Faouzi Department of Signal Theory and Communications (TSC), Universitat Politècnica de Catalunya (UPC), c/ Jordi Girona, 1-3 Campus Nord—Edifici D4, 08034, Barcelona, Spain aut NATIONALLICENCE 700 1- Sallent Oriol Department of Signal Theory and Communications (TSC), Universitat Politècnica de Catalunya (UPC), c/ Jordi Girona, 1-3 Campus Nord—Edifici D4, 08034, Barcelona, Spain aut NATIONALLICENCE 700 1- Pérez-Romero Jordi Department of Signal Theory and Communications (TSC), Universitat Politècnica de Catalunya (UPC), c/ Jordi Girona, 1-3 Campus Nord—Edifici D4, 08034, Barcelona, Spain aut NATIONALLICENCE 700 1- Agustí Ramon Department of Signal Theory and Communications (TSC), Universitat Politècnica de Catalunya (UPC), c/ Jordi Girona, 1-3 Campus Nord—Edifici D4, 08034, Barcelona, Spain aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 72/3(2013-10-01), 1675-1689 0929-6212 72:3<1675 2013 72 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer