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:
Mar. 08, 2016

Filed:

Sep. 20, 2013
Applicant:

Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;

Inventor:

Jun Ibuki, Sagamihara, JP;

Assignee:

FUJITSU LIMITED, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 1/00 (2006.01); H04L 12/801 (2013.01); H04L 1/18 (2006.01);
U.S. Cl.
CPC ...
H04L 47/11 (2013.01); H04L 1/1825 (2013.01); H04L 1/1896 (2013.01); H04L 47/12 (2013.01);
Abstract

In a network including a plurality of nodes, a node transmits data to another node, receives data from another node, and stores a communication history between a plurality of other nodes and the node itself. When an acknowledge response to data transmitted to a first node among the plurality of other nodes is not received, the node generates a duplicate data of the transmitted data. When a duplication report indicating detection of duplicate data transmitted to a second node among the plurality of other nodes has been received from one of the plurality of other nodes, the node refers to the communication history, and identifies the first node as a cause of generation of the duplicate data. Thereafter, the node generates a check request that include a communication history between the first node and the node itself and that requests the first node to check the communication history.


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