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oai:recercat.cat:2117/160932025-07-17T03:18:27Zcom_2072_1033col_2072_452950

Distributed channel assignment algorithm based on simulated annealing for uncoordinated OSA-enabled WLANs Novillo Parales, Francisco Vicente Ferrús Ferré, Ramón Antonio Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions Universitat Politècnica de Catalunya. GRCM - Grup de Recerca en Comunicacions Mòbils Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors::Xarxes d'àrea local Wireless communication systems. Xarxes locals sense fil Wi-Fi A promising approach to alleviate ISM band congestion problems in highly dense WLAN scenarios consists of exploiting opportunistic spectrum access (OSA) to underutilized bands under a primary-secondary model. This paper develops a distributed channel assignment algorithm valid for uncoordinated WLAN deployments where access points do not follow any specific planning and they could belong to different administrative domains. Unlike existing channel assignment schemes proposed for legacy WLANs, channel assignment mechanisms for OSA-enabled WLAN should address two distinguishing issues: channel prioritization and spectrum heterogeneity. Over such a basis, this paper develops and assesses the performance of a distributed channel assignment algorithm that is able to exploit both channel prioritization and spectrum heterogeneity concepts. In particular, the algorithm is based on a distributed adaptation of the simulated annealing metaheuristic algorithm commonly used in global optimization problems. Peer Reviewed Postprint (published version) 2011 Conference report Novillo, F.; Ferrus, R. Distributed channel assignment algorithm based on simulated annealing for uncoordinated OSA-enabled WLANs. A: International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications. "Sixth International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications (CROWNCOM), 2011". Osaka: 2011, p. 81-85. 978-1-4577-0140-5 https://hdl.handle.net/2117/16093 eng http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6030752&tag=1 Restricted access - publisher's policy 5 p. application/pdf