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Fairness-based dynamic sub-carrier assignment for real time services in OFDMA networks
Bezerra Rodrigues, Emanuel; Casadevall Palacio, Fernando José
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. GRCM - Grup de Recerca en Comunicacions Mòbils
Fairness is a crucial aspect for resource allocation in wireless systems, particularly in the downlink of 4G Orthogonal Frequency Division Multiple Access (OFDMA)-based systems. Therefore, it would be interesting for network operators to have tools to manage fairness in their systems. This work describes the utility-based ß-rule, which is a flexible resource allocation framework based on utility theory that is able to control delaybased fairness in a scenario with real time services in an OFDMAbased system. Not only can this framework be designed to work as well-known classical policies found in the literature, but also as an adaptive policy, which is able to meet a desired system fairness target. System-level simulations demonstrate that the adaptive policy is able to guarantee a fairness requirement by dynamically adapting a fairness-controlling parameter in the subcarrier assignment algorithm. It also presents better results than the classical policies in terms of cell capacity and user satisfaction.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors
Wireless communication systems
Orthogonal frequency division multiplexing
Comunicació sense fil, Sistemes de
Multiplexatge per divisió de freqüència
Attribution-NonCommercial-NoDerivs 3.0 Spain
VDE Conference Publications

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