Communication network initialization apparatus and method for fast GPS-based positioning
US6067045A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1999 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Apr 28, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2205/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method is disclosed, utilizing a communications network (in this particular design, it is a GEM (Geo-Mobile) satellite system) to initialize a Global Positioning System (GPS) receiver (such one integrated into a handheld user terminal, or phone used within the communication network) to enable the GPS receiver to quickly acquire GPS satellite signals and perform positioning calculations. By systematically feeding the GPS receiver key pieces of information (GPS satellite trajectories, time estimate, position estimate, and additional positional references), the time to first fix (TTFF) of the GPS receiver can be drastically reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.