Reducing access network congestion caused by oversubscription of multicast groups
US8937858B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2010 |
| Grant date | Jan 20, 2015 |
| Priority date | — |
| Expiry date | Sep 6, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multicast router is coupled with a multicast enabled layer 2 device that is coupled with a source of multicast data traffic for multicast groups. Responsive to determining that the amount of bandwidth currently being attributed as being used by the subscriber exceeds its allowed bandwidth limit due to oversubscription of multicast groups, the multicast router switches from periodically transmitting multicast membership general query messages to the multicast hosts of the subscriber, to transmitting one or more multicast membership group-specific query messages to one or more multicast hosts of the subscriber for a subset of the subscribed multicast groups to impede the subscribed multicast groups that are not part of the subset from being refreshed to cause the multicast data traffic for those multicast groups from being transmitted on the access network to the multicast hosts of the subscriber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.