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Wireless Networks
Erschienen in: Wireless Networks 7/2015

01.10.2015

A downlink power control algorithm for long-term energy efficiency of small cell network

verfasst von: Beom Kwon, Seonghyun Kim, Hojae Lee, Sanghoon Lee

Erschienen in: Wireless Networks | Ausgabe 7/2015

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Abstract

Recently, small cells have been densely deployed in hot spots and overlaid with macro cells in order to guarantee the quality of service for voluminous multimedia data. For a small cell network (SCN), the long-term energy efficiency is one of the most challenging issues for conserving energy while achieving link capacity over the air-interface. In this paper, we present a novel downlink power control scheme to maximize the long-term energy efficiency over a time division multiple access system, which includes multiple small cells and a central controller. Toward this goal, we formulate a long-term energy efficiency optimization problem by defining a long-term energy efficiency metric and performing an iterative algorithm to obtain optimal solutions in real-time via fast convergence. The simulation results show that the proposed metric is very effective at improving the long-term energy efficiency and conserving 8.1 % of the energy on average when compared to a conventional metric. In addition, it is verified that the proposed metric is more effective for an SCN, in particular, when the link capacity is severely degraded due to inter-cell interference.
Vorheriger Artikel Robust collaborative relay beamforming design for two-way relay systems with reciprocal CSI
Nächster Artikel A MAC transmission strategy in sparse Vehicular Delay-Tolerant Sensor Networks

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Metadaten
Titel
A downlink power control algorithm for long-term energy efficiency of small cell network
verfasst von
Beom Kwon
Seonghyun Kim
Hojae Lee
Sanghoon Lee
Publikationsdatum
01.10.2015
Verlag
Springer US
Erschienen in
Wireless Networks / Ausgabe 7/2015
Print ISSN: 1022-0038
Elektronische ISSN: 1572-8196
DOI
https://doi.org/10.1007/s11276-015-0907-2

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