Protection of clear channel connections in communications networks
US7936663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2002 |
| Grant date | May 3, 2011 |
| Priority date | — |
| Expiry date | Mar 15, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2203/006
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for protection of STM-n/OC-n clear channel connections calls for a protection diagram allowing protection of STM-n/OC-n clear channel signals transmitted from a source point to a destination point. This protection allows overcoming a fall along the path between source point and destination point. It can be used in different types of network structure, for example “ring” or “mesh”. The method calls for duplication of STM-n/OC-n signals at the transmitting end of the subnetwork and transmission over two different routes which can be defined as work and protection paths. To ensure success of the protection diagram the work and protection channels follow different routes. At the receiving end, the signal is selected from the work path or the protection path depending on the quality of the received signals, the protection state and the external commands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.