Location system and method for identifying position of mobile terminal that can communicate based on repeater in radio zone, and mobile terminal that can communicate based on repeater in radio zone
US6415155B1 · kind B1 · utility
95Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1999 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Jan 5, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A plurality of ID transmitters that can issue an ID are provided in a building. A center station registers position information that allows identification of the position of an ID transmitter for every different ID. A PHS mobile terminal measures the received field intensity of each repeater and each ID transmitter. The measured result is sent to the center station. The center station identifies the position of the mobile terminal according to the measured result and the position information. Accordingly, the accuracy of the location of a mobile terminal can be improved without increasing the number of repeaters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.