Data communications systems and methods using different wireless links for inbound and outbound data
US7174127B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2002 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Nov 29, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/5692
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A hybrid satellite communications system provides communications, particularly Internet access, to computer users. The hybrid satellite communications system includes a satellite system and a terrestrial communications system. The satellite system includes two transceivers. The first transceiver receives and transmits a first set of signals received from the terrestrial communications system to a plurality of user units. In reverse fashion, the satellite systems second transceiver receives a second set of signals in a second frequency band from the user units and transmits those signals back to the terrestrial communications system. The first set of signals (downlink signals) are of much higher frequency than the second set of signals (uplink signals). Preferably, the first set of signals are relayed by a Direct Broadcast System (DBS) satellite in a frequency band between 12.2 GHz and 12.9 GHz, while the second set of signals are relayed by a Mobile Satellite System (MSS) satellite operating between 1.0 GHz and 3.0 Ghz, or relayed by a terrestrial node operating between 0.8 and 2.0 Ghz. The differences in frequency between the first set of signals and second set of signals is consi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.