Optical transport network protection architecture, nodes and method
US12273185B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2020 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Jan 3, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communications network remote node having a downstream optical circuit configured to receive downstream, DS, optical signals from an active main node and from a standby main node, the downstream optical circuit switchable between a working mode and a protection mode. Optical receivers are configured to receive the demultiplexed downstream optical signals and output encapsulated downstream client signals. Optical transmitters are configured to receive encapsulated upstream client signals and to transmit upstream, US, optical signals at upstream wavelengths carrying the encapsulated upstream client signals. An upstream optical circuit is configured to multiplex the upstream optical signals carrying the encapsulated upstream client signals and to send the upstream optical signals to both main nodes. Processing circuitry is configured to extract downstream client signals and alignment data from encapsulated downstream client signals and form encapsulated upstream client signals by encapsulating upstream client signals and alignment data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.