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:
Mar. 03, 2009
Filed:
Feb. 11, 2004
Rate computations of particular use in scheduling activities or items such as the sending of packets
Earl T. Cohen, Fremont, CA (US);
Christopher J. Kappler, Waltham, MA (US);
Earl T. Cohen, Fremont, CA (US);
Christopher J. Kappler, Waltham, MA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Rate computations are performed such as for use in scheduling activities, such as, but not limited to packets, processes, traffic flow, etc. One implementation identifies an approximated inverse rate, a fix-up adjustment value, and a quantum. An activity measurement value is maintained based on a measure of activity, and a rate control value is maintained based on the measure of activity and the approximated inverse rate. The fix-up adjustment value is applied once each quantum to the rate control value to maintain rate accuracy of the activity. In one implementation, the control value is a scheduling value used for determining when to perform a next part of the activity (e.g., send one or more packets). Scheduling rates are efficiently and compactly stored in an inverse form, which may have advantages in terms of rate granularity, accuracy, and the ability to deliver service smoothly.