TY - GEN
T1 - EnLoc
T2 - 28th Conference on Computer Communications, IEEE INFOCOM 2009
AU - Constandache, Ionut
AU - Gaonkar, Shravan
AU - Sayler, Matt
AU - Choudhury, Romit Roy
AU - Cox, Landon
PY - 2009
Y1 - 2009
N2 - A growing number of mobile phone applications utilize physical location to express the context of information. Most of these location-based applications assume GPS capabilities. Unfortunately, GPS incurs an unacceptable energy cost that can reduce the phone's battery life to less than nine hours. Alternate localization technologies, based on WiFi or GSM, improve battery life at the expense of localization accuracy. This paper quantifies this important tradeoff that underlies a range of emerging services. Driven by measurements from Nokia N95 phones, we develop an energy-efficient localization framework called EnLoc. The framework characterizes the optimal localization accuracy for a given energy budget, and develops prediction-based heuristics for real-time use. Evaluation on traces from real users demonstrates the possibility of achieving good localization accuracy for a realistic energy budget.
AB - A growing number of mobile phone applications utilize physical location to express the context of information. Most of these location-based applications assume GPS capabilities. Unfortunately, GPS incurs an unacceptable energy cost that can reduce the phone's battery life to less than nine hours. Alternate localization technologies, based on WiFi or GSM, improve battery life at the expense of localization accuracy. This paper quantifies this important tradeoff that underlies a range of emerging services. Driven by measurements from Nokia N95 phones, we develop an energy-efficient localization framework called EnLoc. The framework characterizes the optimal localization accuracy for a given energy budget, and develops prediction-based heuristics for real-time use. Evaluation on traces from real users demonstrates the possibility of achieving good localization accuracy for a realistic energy budget.
UR - http://www.scopus.com/inward/record.url?scp=70349695984&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349695984&partnerID=8YFLogxK
U2 - 10.1109/INFCOM.2009.5062218
DO - 10.1109/INFCOM.2009.5062218
M3 - Conference contribution
AN - SCOPUS:70349695984
SN - 9781424435135
T3 - Proceedings - IEEE INFOCOM
SP - 2716
EP - 2720
BT - IEEE INFOCOM 2009 - The 28th Conference on Computer Communications
Y2 - 19 April 2009 through 25 April 2009
ER -