Secure User Plane Location: concept and performance |
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| Authors: | Binghao Li P Mumford A G Dempster C Rizos |
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| Institution: | (1) School of Surveying and Spatial Information Systems, University of New South Wales, Sydney, NSW, Australia |
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| Abstract: | Assisted GPS (A-GPS) has received much attention from both academic and industry because of its two major advantages, faster
positioning and greater sensitivity. Secure User Plane Location (SUPL) is an emerging standard for A-GPS produced by the Open
Mobile Alliance. This article briefly reviews A-GPS, then introduces the SUPL architecture and explains how SUPL works. An
intensive SUPL A-GPS survey under different environments is reported in detail, while a standalone GPS test was utilized for
comparison. The survey was carried out in 24 locations over the University of New South Wales campus representing 5 types
of terrain: Urban, Suburban, Rural, Indoor, and Open sky with a wide range of acquisition difficulty levels. The results show
SUPL can bring a great benefit in fast positioning—much shorter Time-To-First-Fix and high sensitivity—and a much lower failure
rate. |
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