Fallback mode ingress/egress mechanism for satellite communication system
US7386310B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2003 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Aug 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/18513
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A satellite communications system having a fallback mode of operation, during which uplink signals are transmitted at a reduced data rate, is provided with a novel fallback mode ingress/egress mechanism utilizing a combination of a feedback-based fade detection scheme and fade detection based on parameters independent of the uplink signal transmission. The fallback mode ingress/egress mechanism is responsive to a satellite beacon signal independent of the uplink signals and to feedback signals produced by the satellite in response to the uplink signals, for requesting a satellite terminal to switch into the fallback mode when either the feedback signals indicate an increase in a fade level or in response to a first value of a selected parameter of the satellite beacon signal. The fallback mode ingress/egress mechanism requests the satellite terminal to switch out of the fallback mode in response to a second value of the satellite beacon signal parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.