GPS Solutions

, Volume 14, Issue 2, pp 153–163 | Cite as

Secure User Plane Location: concept and performance

Original Article


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.


A-GPS SUPL TTFF High sensitivity 



Assisted GPS


General Packet Radio Service


Mobile Station Assisted


Mobile Station Based


Radio Resource LCS Protocol


SUPL Enabled Terminal


SUPL Location Platform


Secure User Plane Location


Time To First Fix


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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Binghao Li
    • 1
  • P. Mumford
    • 1
  • A. G. Dempster
    • 1
  • C. Rizos
    • 1
  1. 1.School of Surveying and Spatial Information SystemsUniversity of New South WalesSydneyAustralia

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