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:
Dec. 22, 2009
Filed:
Mar. 13, 2003
Mark Thibodeau, Nepean, CA;
Bin Du, Ottawa, CA;
Mark Thibodeau, Nepean, CA;
Bin Du, Ottawa, CA;
Alcatel Lucent, Paris, FR;
Abstract
At telecommunications switches and routers, RED (random early packet discard) uses the queue depth to determine whether to keep or discard each packet as it arrives at a queue. This is done by determining a discard probability (P), which is dependent on the average depth of the queue, and comparing the discard probability to a random number. One way of performing the invention uses the summed discard probabilities, instead of counting the number of packets (count) and multiplying that by the current discard probability, as in the prior art. The resulting sum is compared to the random number for discard operation. The disclosure further describes a more accurate way of calculating average depth of a queue, especially when the queue encounters periods of idleness.