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. 26, 2016

Filed:

Jul. 12, 2012
Applicants:

Atsushi Kumagai, Tokyo, JP;

Masayuki Miura, Tokyo, JP;

Kunio Odaka, Tokyo, JP;

Kazutaka Shimoosako, Tokyo, JP;

Inventors:

Atsushi Kumagai, Tokyo, JP;

Masayuki Miura, Tokyo, JP;

Kunio Odaka, Tokyo, JP;

Kazutaka Shimoosako, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 3/14 (2006.01); H04L 12/28 (2006.01); H04L 12/707 (2013.01); H04L 12/24 (2006.01); H04L 12/26 (2006.01); H04L 12/46 (2006.01);
U.S. Cl.
CPC ...
H04L 45/22 (2013.01); H04L 12/462 (2013.01); H04L 41/0816 (2013.01); H04L 43/0811 (2013.01);
Abstract

A communication system that performs communication route control includes a center node and at least one node connected thereto via a communication line. The node includes an error-detecting unit that detects an error in the communication route, a route request packet transmitting unit that broadcasts a new route request packet in response to the detection, a route answer packet receiving unit that receives a route answer packet transmitted from a node that is a target node or a node having a valid route to the target node or from the center node, and a communication route updating unit that updates a communication route based on the route answer packet. A node that is the target node or the node having a valid route to the target node or the center node transmits a route answer packet to the node in response to a route request packet transmitted from the node.


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