Method and system for service protection
US9197441B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2010 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Mar 22, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/06
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for service protection based on the Dual Node Interconnection (DNI) protection structure in the transport network are provided. When creating a DNI protection group, a plurality of services are configured in one direction, wherein one is a working service, and the others are protection services; the multiple services have the same add node and drop node, but not exactly the same passed interconnection nodes; on each interconnection node of the add ring, two services in the DNI protection group through the local node to the drop ring are adapted as two services in a 1+1 protection group; on the drop node, services in the DNI protection group are adapted as two services in a 1+1 protection group transmitted from two directions of the drop ring; when a fault occurs, said interconnection node and drop node execute switching according to the 1+1 protection protocol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.