Protection method for ring network of optical transmission network
US7706257B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 2006 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | May 29, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/085
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A ring network protection method for an optical transmission network relates to digital information transmission, and includes using the overhead byte APS/PCC in the ODUk to transmit the protection information of the APS. The method adds fields in the APS/PCC and further includes: (a) the network element in which the protection switching takes place in the OTN sends the protection switching information to other network elements through the fields set in the APS/PCC of the ODUk; and the network element which received the ODUk performs corresponding processing according to the fields carried by the APS/PCC in the ODUk and implements the protection switching for the OTN ring network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.