GAC: Energy-Efficient Hybrid GPS-Accelerometer-Compass GSM Localization

Adding location to the available information enables a new category of applications. With the constrained battery on cell phones, energy-efficient localization becomes an important challenge. In this paper we introduce a low-energy calibration- free localization scheme based on the available interna...

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Bibliographic Details
Published in2010 IEEE Global Telecommunications Conference GLOBECOM 2010 pp. 1 - 5
Main Authors Youssef, M, Yosef, M A, El-Derini, M
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2010
Subjects
Accelerometers
Accuracy
Compass
Global Positioning System
Mobile handsets
Sensors
Synchronization
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Summary:Adding location to the available information enables a new category of applications. With the constrained battery on cell phones, energy-efficient localization becomes an important challenge. In this paper we introduce a low-energy calibration- free localization scheme based on the available internal sensors in many of today's phones. We start by energy profiling the different sensors that can be used for localization. Based on that, we propose GAC: a hybrid GPS/accelerometer/compass scheme that depends mainly on using the low-energy accelerometer and compass sensors and uses the GPS infrequently for synchronization. We implemented our system on Android-enabled cell phones and evaluated it in both highways and intra-city driving environments. Our results show that the proposed hybrid scheme has an exponential saving in energy, with a linear loss in accuracy compared to the GPS accuracy. We also evaluate the effect of the different parameters on the energy-accuracy tradeoff.
ISBN:1424456363
9781424456369
ISSN:1930-529X
DOI:10.1109/GLOCOM.2010.5684304