Method and system for mobile location estimation
US5974329A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1997 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Sep 29, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a method and system for mobile location estimation in which range measurements between the mobile station and a base station are discriminated as being either from a base station which is line of sight with the mobile station or a base station that is non-line of sight with the mobile station. Non-line of sight error present in range measurements from base stations that are non-line of sight with the mobile station is corrected. A reconstructed line of sight range measurement is established from the correction of the non-line of sight error. The reconstructed line of sight range measurement can be used with range measurements of base stations determined to be line of sight for accurately locating the mobile station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.