On Metrics and Models for Energy-Efficient Design of Wireless Access Networks

The energy efficiency of wireless access networks has attracted significant interest, due to escalating energy cost and environmental concerns. How energy efficiency should be measured is, however, still disputed in the literature. In this letter, we discuss the impact of performance metrics and ene...

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Bibliographic Details
Published in:IEEE wireless communications letters 2014-12, Vol.3 (6), p.649-652
Main Authors: Tombaz, Sibel, Ki Won Sung, Zander, Jens
Format: Article
Language:English
Subjects:
Base stations
Energy consumption
Energy efficiency
Measurement
network deployment
performance metric
power consumption model
Power demand
wireless access network
Wireless networks
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Summary:The energy efficiency of wireless access networks has attracted significant interest, due to escalating energy cost and environmental concerns. How energy efficiency should be measured is, however, still disputed in the literature. In this letter, we discuss the impact of performance metrics and energy consumption models in network dimensioning. We argue that, using a popular metric, the number of bits/Joule may give misleading results, unless the capacity and coverage requirements of the system are carefully defined. We also claim that the energy consumption in the backhaul and the idle power of the base stations have to be taken into account. To support our claims, we demonstrate in a simple example how misleading results can be obtained by using flawed performance metrics.
ISSN:2162-2337
2162-2345
2162-2345
DOI:10.1109/LWC.2014.2347319