Cellular based traffic sensor system
US5465289A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1993 |
| Grant date | Nov 7, 1995 |
| Priority date | — |
| Expiry date | Mar 5, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for providing vehicular traffic information using presently existing cellular telephone system technology. Traffic sensors monitor the control and voice channel transmissions of cellular units within a cellular telephone system. Data from these transmissions is extracted and analyzed according to a statistical model and derived vehicle geolocating information to generate vehicular traffic information that is transmitted to a central control center. By combining the information from all of the traffic sensors and each individual cell within a cellular telephone system, a picture of the traffic conditions existing along major thoroughfares may be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.