In-band signaling for point-multipoint packet protection switching
US8243743B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2009 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Nov 23, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system provide in-band protection switch signaling in a communication system arranged as a point-to-multipoint tree. The point-to-multipoint tree includes a root node communicatively coupled to a plurality of leaf nodes through both a working link and a protection link. Data is transferred through a current link of the point-to-multipoint tree. The current link is either the working link or the protection link. A fault is detected in the current link in the point-to-multipoint tree. Each leaf node in the point-to-multipoint tree is notified of the fault using the current link. Upon receiving the notification, the root node and each leaf node switch to the other link of the working link and the protection link.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.