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:
Dec. 19, 2017

Filed:

May. 14, 2015
Applicant:

Fuji Xerox Co., Ltd., Tokyo, JP;

Inventor:

Roshan Thapliya, Yokohama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/26 (2006.01); H04L 12/841 (2013.01); H04L 12/46 (2006.01); H04L 12/721 (2013.01); H04W 24/08 (2009.01);
U.S. Cl.
CPC ...
H04L 43/0864 (2013.01); H04L 12/4641 (2013.01); H04L 43/0888 (2013.01); H04L 45/26 (2013.01); H04L 47/283 (2013.01); H04W 24/08 (2013.01);
Abstract

There is provided a communication status measurement device wirelessly connected to a public network and communicating with a server connected to the public network through a communication channel determined in advance. A measurement unit repeatedly measures a time since a dummy packet is transmitted to the server until an acknowledgement packet corresponding to the dummy packet is received. A pattern calculation unit calculates a pattern obtained by removing a component at frequencies more than a first frequency from a pattern of variations in a measured value. An RTT acquisition unit that acquires a round trip time, which is used to calculate an actual bandwidth of the communication channel, on a basis of the calculated pattern. An implementation unit implements a virtual private network in the communication status measurement device itself. The dummy packet is transmitted and the acknowledgement packet is received via the virtual private network and the public network.


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