Fairness-based dynamic sub-carrier assignment for real time services in OFDMA networks
Document typeConference report
PublisherVDE Conference Publications
Rights accessRestricted access - publisher's policy
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.
CitationBezerra, E.; Casadevall, F. Fairness-based dynamic sub-carrier assignment for real time services in OFDMA networks. A: European Wireless Conference. "European Wireless 2014: 20th European Wireless Conference: Centre Tecnologic de Telecomunicacions de Catalunya (CTTC): 14–16 May 2014: Barcelona, Spain". Barcelona: VDE Conference Publications, 2014.
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