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:
Sep. 25, 2007
Filed:
Apr. 01, 2003
Ganesh Balakrishnan, Morrisville, NC (US);
John P. Chalmers, Cary, NC (US);
Clark D. Jeffries, Durham, NC (US);
Jitesh R. Nair, Austin, TX (US);
Larry W. Nicholson, Chapel Hill, NC (US);
Ravinder K. Sabhikhi, Cary, NC (US);
Raj K. Singh, Cary, NC (US);
Ganesh Balakrishnan, Morrisville, NC (US);
John P. Chalmers, Cary, NC (US);
Clark D. Jeffries, Durham, NC (US);
Jitesh R. Nair, Austin, TX (US);
Larry W. Nicholson, Chapel Hill, NC (US);
Ravinder K. Sabhikhi, Cary, NC (US);
Raj K. Singh, Cary, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A flow control method and system including an algorithm for deciding to transmit an arriving packet into a processing queue or to discard it, or, in the case of instructions or packets that must not be discarded, a similar method and system for deciding at a service event to transmit an instruction or packet into a processing queue or to skip the service event. The transmit probability is increased or decreased in consideration of minimum and maximum limits for each flow, aggregate limits for sets of flows, relative priority among flows, queue occupancy, and rate of change of queue occupancy. The effects include protection of flows below their minimum rates, correction of flows above their maximum rates, and, for flows between minimum and maximum rates, reduction of constituent flows of an aggregate that is above its aggregate maximum. Practice of the invention results in low queue occupancy during steady congestion.