Apparatus for acquiring the position of a mobile station
US5629710A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1995 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Jan 10, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A position acquiring apparatus for specifying the spatial position of a mobile station is provided for a mobile communication system composed of a plurality of base stations fixed on the ground and a mobile station moving on the ground or water or in the air, whereby hand-off control can be executed at proper switching timing or diversity reception control requiring short processing time can be carried out. A receiving unit of the mobile station receives signals transmitted from the base stations, and an extracting unit extracts a predetermined synchronizing signal and an identifying signal contained in each transmitted signal. A time difference detecting unit monitors the timing at which each of the predetermined synchronizing signals is extracted by the extracting unit, to detect a time difference between each extraction timing and predetermined timing. A base station coordinates detecting unit detects position coordinate values of each of the base stations, based on the identifying signals. Based on the time differences and the position coordinate values thus obtained, a mobile station coordinates calculating unit calculates position coordinates of the mobile station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.