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:
Feb. 13, 1996
Filed:
Aug. 16, 1994
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method for scheduling asynchronous transfer mode (ATM) data cells for transmission in an ATM system uses a plurality of queues. The plurality of queues are separated into waiting queues of a lower priority and transmit queues of a higher priority. ATM tokens which identify one active channel a piece are positioned in the queues and rotated/shifted to new positions over time. As time progresses, ATM tokens are shifted/rotated from waiting queues of a lower priority to transfer queues of a higher priority wherein the tokens (and therefore specific ATM channels) are selected and ATM data cell(s) are transmitted in response to the selection. This queued/shifted selection process ensures that bandwidth requirements are adhered to in the ATM system. The selected tokens are eventually (after all needed ATM data cell(s) are transmitted for a single selection) re-scheduled to a queue of lower priority.