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:
Nov. 27, 2018

Filed:

Dec. 06, 2017
Applicant:

Futurewei Technologies, Inc., Plano, TX (US);

Inventors:

Xiang Liu, Marlboro, NJ (US);

Frank Effenberger, Frisco, TX (US);

Huaiyu Zeng, Red Bank, NJ (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/27 (2013.01); H04B 10/2507 (2013.01); H04L 7/00 (2006.01); H04J 14/02 (2006.01);
U.S. Cl.
CPC ...
H04L 7/0075 (2013.01); H04B 10/2507 (2013.01); H04J 14/0227 (2013.01); H04B 10/27 (2013.01);
Abstract

A first apparatus comprises: a processor configured to generate a first synchronization message; a transmitter coupled to the processor and configured to transmit the first synchronization message to a second apparatus at a first wavelength; and a receiver coupled to the processor and configured to receive a second synchronization message from the second apparatus at a second wavelength and in response to the first synchronization message, the first wavelength and the second wavelength are based on a reduction of a latency difference between the second synchronization message and the first synchronization message, and the processor is further configured to calculate a TO between the first apparatus and the second apparatus based on the reduction.


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