Author(s):
Coelho, André 
; Meneses, Filipe ; José, Rui
Date: 2011
Persistent ID: http://hdl.handle.net/1822/15641
Origin: RepositóriUM - Universidade do Minho
Subject(s): Localization; Mobile computing
Document details
Time-shifted positioning for location-based logging in mobile devices
Description
In this paper, we explore the viability and possible limitations of a time-shifted positioning process for location-based logging in which we want to annotate certain events registered on a mobile phone with location data. Instead of estimating the position when the event occurs, the system stores the radio and Wi-Fi data. At some later stage, this data is passed to a server that transforms it into the respective position. This shifting of the moment of positioning avoids frequent communications, saving energy and possibly communication costs. We have conducted a controlled experiment to assess the accuracy of the positions obtained with this process and interestingly, they seem to suggest that the approach is not only viable, but also more accurate than the positions obtained in real-time.
In this paper, we explore the viability and possible limitations of a time-shifted positioning process for location-based logging in which we want to annotate certain events registered on a mobile phone with location data. Instead of estimating the position when the event occurs, the system stores the radio and Wi-Fi data. At some later stage, this data is passed to a server that transforms it into the respective position. This shifting of the moment of positioning avoids frequent communications, saving energy and possibly communication costs. We have conducted a controlled experiment to assess the accuracy of the positions obtained with this process and interestingly, they seem to suggest that the approach is not only viable, but also more accurate than the positions obtained in real-time.
Document Type
Article
Language English
Language English
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