Positioning with wireless local area networks and WLAN-aided global positioning systems
US7130646B2 · kind B2 · utility
129Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2003 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | Jun 4, 2024 |
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.