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:
Oct. 31, 2006
Filed:
Feb. 07, 2003
Kenneth Evert Sailor, Saskatoon, CA;
Kenneth Evert Sailor, Saskatoon, CA;
PMC-Sierra, Inc., Santa Clara, CA (US);
Abstract
A multicast connection scheduling method for a 3-stage switch fabric with nfirst stage, nsecond stage and nthird stage interconnected switching devices. The first and third stage devices are non-blocking for unicast connections. The center stage devices are non-blocking for multicast connections. Load tables are provided for each center stage device, with one row per first and/or third stage device. Each row represents the number of connections being serviced between the first and/or third stage devices, through the center stage device corresponding to the table. By monitoring and updating the tables, the invention derives an approximately optimal connection schedule for an input list of connection requests, such that no input connection load exceeds any center stage device's maximum input connection load capacity and no output connection load exceeds any center stage device's maximum output connection load capacity.