Optical communications system with back-up link
US6928248B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2001 |
| Grant date | Aug 9, 2005 |
| Priority date | — |
| Expiry date | Mar 6, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/1123
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A device and method for operational switching between line-of-sight wireless communications transceivers requires evaluating a useful received signal strength intensity (RSSI) for a first transceiver, and switching to a second transceiver when the consequent bit error rate (BER) is not useful for the first transceiver. Subsequent switching between the first and second transceivers is accomplished in accordance with a timed sequence regimen that involves variable time delays, and considerations of RSSI changes within determined time periods. Preferably, the first transceiver transmits and receives on a laser beam and the second transceiver transmits and receives on a microwave beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.