Rate-based multi-level active queue management with drop precedence differentiation
US7336611B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2003 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Feb 10, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/32
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed is a rate-based multi-level Active Queue Management with drop precedence differentiation method and apparatus which uses traffic rate information for congestion control. Using a nonlinear fluid-flow model of Traffic Control Protocol, an integral controller in a closed-loop configuration with gain settings characterized for stable operation allows a matching of the aggregate rate of the active TCP connections to the available capacity. Further disclosed is a method for calculation of the regime of gains over which stable operation of a given network obtains. An enhancement of the basic algorithm provides the ability to drop low-precedence packets in preference to higher precedence packets. This approach allows for a rate-based AQM approach for application in a differentiated service environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.