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, 2014
Filed:
Nov. 09, 2010
Harold A. Roberts, Prior Lake, MN (US);
Christopher T. Bernard, Wayzata, MN (US);
Jason W. Dove, Novato, CA (US);
Berkay Baykal, Westborough, MA (US);
Harold A. Roberts, Prior Lake, MN (US);
Christopher T. Bernard, Wayzata, MN (US);
Jason W. Dove, Novato, CA (US);
Berkay Baykal, Westborough, MA (US);
Calix, Inc., Petaluma, CA (US);
Abstract
One or more devices of a network having asymmetric delay are configured to participate in time synchronization protocol sessions in which a client device synchronizes its local clock to a master device. In one example, a system includes an optical line terminal configured to receive a time synchronization protocol packet from a grandmaster clock and an optical network unit (ONU) configured to calculate a residence time of the time synchronization protocol packet, encode the residence time into the packet, and to forward the packet to a client device. Moreover, the system may participate in a plurality of time synchronization protocol sessions with a plurality of client devices, such that the client devices become synchronized in frequency and phase.