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. 27, 2011
Filed:
Feb. 03, 2009
Alain Blanc, Tourrettes sur Loop, FR;
Rene Glaise, Nice, FR;
Francois Le Maut, Nice, FR;
Michel Poret, Valbonne, FR;
Alain Blanc, Tourrettes sur Loop, FR;
Rene Glaise, Nice, FR;
Francois Le Maut, Nice, FR;
Michel Poret, Valbonne, FR;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for selecting packets to be switched in a collapsed virtual output queuing array (cVOQ) switch core, using a request/acknowledge mechanism is disclosed. An egress location for an ingress port is selected based on degrees of freedom for the selection mechanism. The degree of freedom can be derived from the collapsed virtual output queuing array by determining a number of egress locations to which an ingress port may send packets and determining a number of ingress ports from which an egress location can receive packets. Analyzing all the queued packets for assignment to an egress location, starting with a lesser degree of freedom and ending with a greater degree of freedom provides efficient switching allocations and acknowledgements.