Determining Wireless Device Locations

  • Published: Jul 24, 2003
  • Earliest Priority: Jun 29 2001
  • Family: 3
  • Cited Works: 0
  • Cited by: 32
  • Cites: 7
  • Additional Info: Full text
Abstract

Wireless network devices can obtain their geographical location by triangulating with access points that have precise time information. In response to a location prompt, a wireless device can send a transmission to multiple access points that are within its range. The different times at which the transmission is received at different access points can be collected and forwarded to a server, which can compute the location of the wireless device using triangulation techniques. The access points can calibrate their own time bases from time services received from global position satellites.


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Document History
  • Publication: Jul 24, 2003
  • Application: Jan 10, 2003
    US US 34010303 A
  • Priority: Jan 10, 2003
    US US 34010303 A
  • Priority: Jun 29, 2001
    US US 89677201 A

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