Impact of VoIP codecs on the energy consumption of portable devices

Authors:
Antonio J. Estepa;Juan M. Vozmediano;Jorge López;Rafael M. Estepa
Affiliations:
University of Sevilla, Seville, Spain;University of Sevilla, Seville, Spain;University of Sevilla, Sevilla, Spain;University of Sevilla, Sevilla, Spain
Venue:
Proceedings of the 6th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
Year:
2011

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Abstract

In this paper we investigate the influence of the codecs into the energy consumption of VoIP applications. These applications are increasingly extended among users of battery- dependent devices such as laptops, smartphones and tablets. We provide a methodology to compare the energy efficiency of different VoIP codecs for a given device. This allows users and developers to minimize the energy consumption by codec selection, and introduces a new variable into the QoS-bandwidth balance that has traditionally lead the codec selection in VoIP applications. Our results show that the codec can have a significant impact on the energy consumption attributable to the VoIP software of the portable device.