Method for protecting cross-ring service in optical network
US7639944B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 6, 2006 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Dec 11, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0092
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for protecting a cross-ring service in an optical network includes the steps of: determining whether a configured working path crosses different rings; and in the case that the working path crosses different rings, establishing a cross-ring protection path which bypasses an off-ring node or an on-ring node of the working path on a ring, and binding the cross-ring protection path and the working path, wherein the cross-ring protection path and the working path is bound, and thus a protection can be implemented for the cross-ring service when the off-ring node or the on-ring node fails, with a reduced occupancy of bandwidth in comparison with the conventional DNI method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.