The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 2009
Filed:
Jun. 10, 2004
Wladyslaw Olesinski, Kanata, CA;
Steve Driediger, Kanata, CA;
Wladyslaw Olesinski, Kanata, CA;
Steve Driediger, Kanata, CA;
Alcatel Lucent, Paris, FR;
Abstract
A Weighted Random Early Detection (WRED) algorithm is described. The WRED algorithm provides fairness to responsive TCP and non-responsive UDP traffic at a buffer of a communications system. Because TCP traffic is responsive to congestion occurrences while UDP traffic is not, without controls, UDP will monopolize the buffer bandwidth. This invention solves the problem by applying congestion control alogrithms to TCP and UDP traffic separately. Discard thresholds for UDP traffic are dynamically modified in a manner that limits UDP traffic to a provisioned percentage of the buffer's available bandwidth, while a traditional WRED algorithm is applied to TCP traffic.