Method and system for locating a mobile station
US6108556A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1998 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Jan 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention relates to a mobile station locating method for locating a mobile station based on a mobile communications system. Radio zones of base stations are dissected into a plurality of search areas (grid sections). A positional relationship between base stations and a concerned search area is defined by mutual time differences in the radio wave propagation between them. The base stations transmit their characteristic signals. Time differences in the propagation of the characteristic signals are caused between transmission of the characteristic signals at respective base stations and reception at a mobile station. Mutual differences in their propagation times are used to identify a search area where the mobile station is present. Thus, the position of the mobile station can be identified by an area not by a point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.