Method and system of monitoring a data transmission link, particularly an optical, bidirectional data transmission link
US7945160B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 2008 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Dec 18, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/0795
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods for monitoring a data transmission link, especially an optical, bidirectional data transmission link, in which a digital transmit signal is transmitted on a first transmission path from a local end of the data transmission link toward a remote end of the data transmission link. A portion of the power of the transmit signal sent at the local end is transmitted, delayed by a non-zero delay time on a second transmission path as a control signal toward the remote end of the data transmission link. Both signals are received at the remote end and are tested for the presence of events of a predetermined type. A conclusion can be reached on the quality of the transmission link as a function of a time correlation and frequency of the appearance of events in the received transmit signal and in the received control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.