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.
Patent No.:
Date of Patent:
Oct. 24, 2017
Filed:
Aug. 18, 2010
Hiroshi Kitamura, Tokyo, JP;
Hiroshi Kitamura, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
Provided is a communication system that includes first and second communication devices operating in conformance with IPv6 requirements, in which the first communication device () determines whether an own IP address for communication is utilized or not by monitoring a communication status, generates a response request message requesting a response message to the second communication device when the own IP address is determined to be no longer required, designates the own IP address as a destination of the response message in the response request message, and transmits the response request message to the second communication device () during a period when a Neighbor Cache entry related to the own IP address in the second communication device is in STALE state after transition from REACHABLE state.