ASSISTED GPS : A LOW-INFRASTRUCTURE APPROACH

This article describes a low-cost method to use assisted GPS (AGPS) carried over a Short Messaging Service (SMS) to create a system for locating wireless phones-without large amounts of additional hardware and software. The assistance server operates outside the cell phone network and takes off much of the computational burden for making location calculations, speeding time to first fix (TTFF) and reducing the amount of power consumed by the system. Next-generation phones will enable further refinements to the point where true indoor GPS location services will be possible.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/10485104
• Corporate Authors:

  Advanstar Communications, Incorporated

  131 West First Street
  Duluth, MN  United States  55802-2065
• Authors:
  • LaMance, J
  • DeSalas, J
  • Jarvinen, J
• Publication Date: 2002-3

Language

• English

Media Info

• Features: Figures;
• Pagination: p. 46-51
• Serial:
  • GPS World
  • Volume: 13
  • Issue Number: 3
  • Publisher: Advanstar Communications, Incorporated
  • ISSN: 1048-5104

Subject/Index Terms

• TRT Terms: Cellular telephones; Emergency communication systems; Global Positioning System; Location based services; Text messaging; Wireless communication systems
• Subject Areas: Aviation;

Filing Info

• Accession Number: 00926591
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: BTRIS, TRIS
• Created Date: Jul 1 2002 12:00AM