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.

Date of Patent:
Apr. 24, 2018

Filed:

Mar. 21, 2016
Applicant:

Industrial Technology Research Institute, Hsinchu, TW;

Inventors:

Cheng-You Ho, Changhua County, TW;

Tain-Lieng Kao, Tainan, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 56/00 (2009.01); H04W 24/00 (2009.01); H04J 3/06 (2006.01); H04L 7/00 (2006.01); H04L 12/26 (2006.01);
U.S. Cl.
CPC ...
H04W 56/009 (2013.01); H04L 7/0004 (2013.01); H04L 43/0864 (2013.01); H04W 56/0015 (2013.01);
Abstract

A clock synchronization method, a mobile network system, a network controller and a network switch are provided. The method computes a round-trip delay ratio between the network controller and the network switch according to a first delay, of which the network controller transmits a packet to the network switch, and a second delay, of which the network switch transmits another packet to the network controller. The method also locks a first clock based on a time-transfer protocol with the round-trip delay ratio, wherein the first clock is synchronized with a master clock of the network controller. The method further sets the first clock being locked as a runtime clock of the network switch.


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