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:
May. 01, 2007
Filed:
Dec. 20, 2002
Kenneth Evert Sailor, Saskatoon, CA;
Richard Blake Ryder Wiggs, Richmond, CA;
Kenneth Evert Sailor, Saskatoon, CA;
Richard Blake Ryder Wiggs, Richmond, CA;
PMC-Sierra, Inc., Santa Clara, CA (US);
Abstract
Multicast call blocking is reduced in TST switch fabrics with the aid of an m-entry data structure. Each entry corresponds to one of m timeslots, and has 2n sub-entries corresponding to n input ports and n output ports. An N-cast call X:(y→z, z. . . z) is representable by associating a selected entry's yinput sub-entry with z, z, . . . zof the selected entry's output sub-entries. Upon receipt of a call, the data structure entries are sequentially examined to detect the first entry for which a yinput sub-entry is unused and z, z, . . . zoutput sub-entries are unused. If such an entry is detected, the call is scheduled for transmission in the corresponding timeslot. If there is no such entry and if N=1 the call cannot be scheduled; but, if N>1 the call is divided into two or more calls and an attempt is made to schedule them as above.