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. 06, 2008
Filed:
Jul. 01, 2003
Kim B Roberts, Nepean, CA;
James Harley, Nepean, CA;
Philippe Neusy, Ottawa, CA;
Michael Mayer, Ottawa, CA;
Kim B Roberts, Nepean, CA;
James Harley, Nepean, CA;
Philippe Neusy, Ottawa, CA;
Michael Mayer, Ottawa, CA;
Nortel Networks Limited, St. Laurent, Quebec, CA;
Abstract
In a method of estimating a bit rate (f) of a digital signal conveyed through a SONET network between an originating node and a terminating node, the digital signal received by the originating node is processed to determine a result of a first function of the signal bit rate (f) and a respective Tx local reference frequency (f) of the originating node. A result of a second function of the Tx local reference frequency (f) and a respective Rx local reference frequency (f) of the terminating node is calculated. Finally, a result of a third function of the respective first and second function results is calculated, to derive an estimate of the signal bit rate (f) relative to the Rx local reference frequency (f).