Apparatus, system and method for determining a geographical location of a portable communication device
US8103285B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 2007 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Jul 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S11/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wireless access point receives a reverse link (RL) wireless wide area network (WWAN) signals from a wireless communication device and forwards wireless local area network (WLAN) location information related to the received RL WWAN signal to a position determining entity (PDE). The PDE uses the WLAN location information and, in some cases, other location information to determine the geographical location of the wireless communication device. The WLAN location information is any information that at least assists the PDE in determining the geographical location of the wireless communication device and may include any combination of data related to signal strength of the WWAN RL signal, a propagation time of WWAN RL signal, a distance between the access point and the wireless access point, a geographical location of the access point, and/or a geographical location of the wireless communication device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.