Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/47384

Energy Efficient Assisted GPS Measurement and Path Reconstruction for People Tracking

Authors Ouyang, Robin Wentao HKUST affiliated (currently or previously)
Wong, Albert Kai-Sun View this author's profile
Chiang, Mung
Woo, Kam Tim View this author's profile
Zhang, Victoria Ying HKUST affiliated (currently or previously)
Kim, Hongseok
Xiao, Xiaoming
Issue Date 2010
Source Globecom , 2010
Summary In the use of a wearable GPS and cellular tracker for applications such as elderly tracking, device power consumption is an important consideration. To save power, assisted GPS (AGPS) location fixes should not be performed frequently. On the other hand, we also do not want to lose important information about the user's mobility patterns and routines. To solve this dilemma, in this paper, we present the design of a system that intelligently schedules on-line AGPS location fixes only when necessary based on information extracted from user's historical mobility data, and then reconstruct the user path based on these sparsely taken on-line location fixes. Experimental results show that our on-line algorithm can significantly reduce the number of AGPS fixes needed and the reconstruction method works well without a priori knowledge of a map and streets information.
Subjects
ISSN 1930-529X
ISBN 978-1-4244-5638-3
Language English
Format Conference paper
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