Emergency location method for a wireless location system
US6172644A · kind A · utility
115Cited by
11References
46Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 12, 1999 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Jan 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for use in locating a mobile transmitter in an emergency situation comprises the steps of (a) upon determining that the emergency situation exists, monitoring a bandwidth of a reverse voice channel (RVC) signal transmitted by the mobile transmitter; (b) determining whether the bandwidth exceeds a predetermined threshold; (c) if the bandwidth exceeds the predetermined threshold, measuring the location of the mobile transmitter; and (d) if the bandwidth does not exceed the predetermined threshold, performing a predetermined action to increase the bandwidth and subsequently measuring the location of the mobile transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.