Non-terrestrial cellular mobile telecommunication station
US6108539A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1997 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Oct 29, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The non-terrestrial cellular mobile telecommunication station uses a number of non-interference techniques to extend the usage of existing cellular mobile telecommunication radio frequencies allocated for ground-based communications to the non-terrestrial realm. For example, the polarization of the signals produced by the antenna elements of the non-terrestrial cellular mobile telecommunication station is different than and preferably substantially orthogonal to the polarization of the cellular radio signals produced by the ground-based antennas to thereby minimize the possibility of interference with the ground-based radio signals. Furthermore, the control signals exchanged between the non-terrestrial mobile subscriber stations and the non-terrestrial cell site controller are architected to avoid the possibility of interference with ground-based cell site transmitter-receiver pairs. The transmit power of the non-terrestrial cellular mobile telecommunication station is also tightly controlled and of a magnitude to be rejected by the ground-based mobile subscriber stations and cell site transmitter-receiver pairs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.