Control of multicast content distribution
US8995439B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 13, 2010 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Feb 28, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/2396
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A local router stores a content distribution map that specifies a plurality of permitted multicast groups. The local router receives communications from user devices on an access-network side of the local router. Those received communications identify multicast groups for which user devices wish to receive data. The local router ascertains if those identified multicast groups are permitted multicast groups specified by the stored content distribution map. For multicast groups ascertained to be permitted multicast groups, the local router sends communications across a network-side interface requesting membership in those multicast groups. The local router may then receive data for those multicast groups and forward that data to user devices. For multicast groups identified in user device communications ascertained not to be permitted multicast groups, the local router sends no communications across the network-side interface requesting membership.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.