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Wireless Communications and Mobile Computing
Volume 2018, Article ID 1347967, 15 pages
Research Article

Power Profiling of Context Aware Systems: A Contemporary Analysis and Framework for Power Conservation

1Department of Software Engineering, Foundation University Islamabad, Pakistan
2School of Reliability and Systems Engineering, Beihang University, Beijing, China

Correspondence should be addressed to Shunkun Yang; nc.ude.aaub@ksy

Received 14 March 2018; Revised 18 July 2018; Accepted 29 August 2018; Published 16 September 2018

Academic Editor: Mubashir H. Rehmani

Copyright © 2018 Umar Mahmud et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


With the advent of smart, inexpensive devices and a highly connected world, a need for smart service discovery, delivery, and adaptation has appeared. This interconnection is composed of sensors within devices or placed externally in the surrounding environment. Our research addresses this need through a context aware system, which adapts to the users’ context. Given that the devices are mobile and battery operated, the main challenge in a context awareness approach is power conservation. The devices are composed of small sensors that consume power in the order of a few mW. However, their consumptions increase manifold during data processing. There is a need to conserve power while delivering the requisite functionality of the context aware system. Therefore, this feature is termed as ‘power awareness.’ In this paper, we describe different power awareness techniques and compare them in terms of their conservation effectiveness. In addition, based on the investigations and comparison of the results, a power aware framework is proposed for a context aware system.