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:
Jun. 06, 2017
Filed:
Jan. 15, 2014
Cisco Technology, Inc., San Jose, CA (US);
Rong Pan, Saratoga, CA (US);
Preethi Natarajan, Los Gatos, CA (US);
Chiara Piglione, San Jose, CA (US);
Mythili Suryanarayana Prabhu, San Jose, CA (US);
Alon Bernstein, Monte Sereno, CA (US);
Frederick J. Baker, Goleta, CA (US);
CISCO TECHNOLOGY, INC, San Jose, CA (US);
Abstract
An example method for adapting Proportional Integral controller Enhanced (PIE) algorithm for varying network conditions is provided and includes estimating an average dequeue rate at which packets are dequeued from a queue of packets maintained in a buffer in a network element operating, estimating a current queuing latency for the queue of packets based on the average dequeue rate, determining a target delay based on the average dequeue rate, the target delay varying with the average dequeue rate according to a predetermined relationship, and calculating a current drop probability associated with a probability that packets arriving at the buffer will be dropped or marked, the current drop probability being calculated using at least the current queuing latency and the target delay. In some embodiments, a threshold for a number of bytes dequeued from the buffer is estimated based on network conditions.