Technique for mobile wireless device location
US6449485B1 · kind B1 · utility
169Cited by
29References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 1999 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Jan 22, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus of determining the position of a mobile communications device using retransmitted GPS data is described. In the invention, a timing apparatus in the mobile communications device is synchronized with a timing device in the base station. The mobile unit samples and time stamps received GPS signals for retransmission to the base station. The base station uses the time stamp to determine an approximate time when the GPS sample was received allowing a reduction in the amount of GPS sample data needed to compute a position of the mobile communications device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.