System for transmitting radio signals from mobile terminals to provide space diversity for uplink signals via geostationary communication satellites
US5839053A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1996 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Jul 30, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/18521
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention concerns a system for transmission of spatial diversity radio signals via a geostationary main communication satellite and one or more auxiliary satellites "colocated" in the same orbit. The distance between an auxiliary satellite and the main satellite is in the range from 200 km to 400 km. The system includes conventional bidirectional transmission links between terrestrial mobile terminals and the main satellite and between the latter and a terrestrial station. Additionally, unidirectional transmission links are provided between the auxiliary satellites and the main satellite. Applications include a mobile communication service with portable terminals via a geostationary satellite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.