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:
Feb. 28, 2023

Filed:

Jun. 23, 2020
Applicant:

Fujitsu Limited, Kawasaki, JP;

Inventors:

Sumiyo Okada, Kawasaki, JP;

Hitoshi Ueno, Kawasaki, JP;

Fumiyuki Iizuka, Kawasaki, JP;

Kazutaka Ogihara, Hachioji, JP;

Chunghan Lee, Yokohama, JP;

Assignee:

FUJITSU LIMITED, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/26 (2006.01); H04L 43/0864 (2022.01); H04L 1/1607 (2023.01); H04L 9/40 (2022.01);
U.S. Cl.
CPC ...
H04L 43/0864 (2013.01); H04L 1/1685 (2013.01); H04L 63/1408 (2013.01); H04L 63/1466 (2013.01);
Abstract

The process includes acquiring, from a relay device that relays a packet between a first communication device and a second communication device, a plurality of first delay times generated by a round trip of the packet between the first communication device and the relay device, and a plurality of second delay times generated by a round trip of the packet between the second communication device and the relay device, sorting separately the plurality of first delay times and the plurality of second delay times based on a length of a delay time, and calculating device delay times based on a first delay calculation that calculates a difference between each of the plurality of first delay times and each of the plurality of second delay times in a same rank after the sorting.


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