Video aware traffic management
US7609709B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2006 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Jul 15, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/32
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multiplexer selectively chooses packets for discarding during periods of congestion. In a first embodiment, thresholds for fill levels of a FIFO queue are set for a plurality of priority types. As thresholds are exceeded, incoming packet below a set priority level will be prevented from entering the queue and packets at the front of the queue below the set priority will be discarded. In a second embodiment, packets within a queue may be marked for deletion. A forward/discard list assigns an index to a new packet and maintains a list of the stream associated with each packet. A priority index list maintains a list of packets for each priority type by index number. A video metadata buffer stores the metadata for each enqueued packet. A physical video buffer stores the packets. When an incoming packet cannot be enqueued, packets of lower priority are detected by reference to the index list and marked for discard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.