Power Allocation for Minimizing Energy Consumption of OFDMA Downlink with Cell DTx

Abstract : With Cell DTx, a base station can dynamically be switched to sleep mode during very short periods (inferior to frame duration) in order to reduce its energy consumption. In this paper, we study the problem of energy consumption minimization with Cell DTx for the downlink of an Orthogonal Frequency Division Multiple Access (OFDMA) base station. We show that this problem can be rewritten as a convex problem. Then, we derive interpretable expressions for the transmit power and sleep mode duration which minimize the energy consumption. Besides, we show that resource allocation algorithms already proposed for transmit power minimization have near optimal performance. Simulation results show that up to 38% of base station energy consumption can be saved with Cell DTx.
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Communication dans un congrès
24th International Conference on Telecommunications (ICT) , May 2017, Limassol, Cyprus. ICT 2017 proceedings, <http://ict-2017.org/>
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Contributeur : Rémi Bonnefoi <>
Soumis le : vendredi 5 mai 2017 - 09:18:35
Dernière modification le : samedi 8 juillet 2017 - 01:11:24
Document(s) archivé(s) le : dimanche 6 août 2017 - 12:15:22

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  • HAL Id : hal-01504248, version 3

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Rémi Bonnefoi, Christophe Moy, Haïfa Farès, Jacques Palicot. Power Allocation for Minimizing Energy Consumption of OFDMA Downlink with Cell DTx. 24th International Conference on Telecommunications (ICT) , May 2017, Limassol, Cyprus. ICT 2017 proceedings, <http://ict-2017.org/>. <hal-01504248v3>

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