Method and apparatus for providing a multicast service with multiple types of protection and recovery
US8098576B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2009 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Nov 21, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multicast service method and apparatus for providing multicast service with various types of protections and recoveries. The method includes splitting a multicast service into a plurality of unidirectional point-to-point services from a source node to each sink node, where a signaling message of each unidirectional point-to-point services is independent of one another; establishing, at the source node which publishes the multicast service, one or more label switch paths for each unidirectional point-to-point service with the signaling messages; and receiving a notification message when a failure occurs in the network, where the notification message carries ID(s) of one or more label switch paths that are affected by the failure; establishing, by the source node, a recovered label switch path or a new backup label switch path in response to the notification message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.