Locating method and arrangement
US6484031B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1999 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Aug 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a locating method and an arrangement for determining the location of a terminal in a radio system comprising a plurality of base stations and terminals. At least two base stations with known locations transmit a signal used in locating the terminal, and the signals are transmitted in beams with directional antenna patterns and the direction of the beams is changed as a function of time. The terminal determines the location of the base station and the transmission direction of the signal used in location determination by means of the beam transmitted by said at least two base stations. Since the terminal is located at the intersection of the beams of the base stations transmitting from known locations, the location of the terminal can easily be determined. The solution takes multipath propagation into account.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.