Satellite-based communications system with terrestrial repeater and method therefor
US6570858B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1999 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Nov 1, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/18534
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A satellite-based communications system (20) includes a communication satellite (22) using a Time Division Duplex (TDD) frame structure. The communication satellite (22) transmits first data (63) during a first sub-frame (150) and receives second data (65) during a second sub-frame (152) of a time division multiple access (TDMA) frame (144). A terrestrial repeater (30) receives the first data (63) using a first link (36) during the first sub-frame (150), delays the first data (63) by a sub-frame duration, and transmits the first data (63) to a subscriber unit (32) using a second link (42). The terrestrial repeater (30) receives the second data (65) from the subscriber unit (32) using the second link (42), delays the second data (65) by the sub-frame duration, and transmits the second data (65) using the first link (36) to the satellite (22) during the second sub-frame (152).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.