Multicast routing based on a unicast transport network
US9998291B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Mar 7, 2013 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Mar 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/185
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for routing a multicast stream is disclosed. The method comprises providing an overlay network comprising at least one controller; and a plurality of routers communicatively coupled to the at least one controller; receiving by the controller, multicast control information from each of the plurality of routers; creating by the controller, a routing tree based on the multicast control information; receiving by a first router, a request to join a multicast stream from a first receiver; locating a route to a replication point for the stream within the overlay network based on the routing tree; creating a secure communications path between the first router and the replication point over a unicast transport network; receiving, by the first receiver, a multicast stream from the replication point via the secure communications path; and de-encapsulating the multicast stream and forward it to the first receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.