Positioning with wireless local area networks and WLAN-aided global positioning systems
US7899472B1 · kind B1 · utility
18Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2006 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Aug 27, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Accurate position capability can be quickly provided using a Wireless Local Area Network (WLAN). When associated with a WLAN, a wireless device can quickly determine its relative and/or coordinate position based on information provided by an access point in the WLAN. Before a wireless device disassociates with the access point, the WLAN can periodically provide time, location, and decoded GPS data to the wireless device. In this manner, the wireless device can significantly reduce the time to acquire the necessary GPS satellite data (i.e. on the order of seconds instead of minutes) to determine its coordinate position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.