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:
Apr. 08, 2014
Filed:
Nov. 30, 2010
Katsuhiko Negoto, Kawasaki, JP;
Akihiro Kameda, Kawasaki, JP;
Isamu Fukuda, Kawasaki, JP;
Atsushi Morohashi, Kawasaki, JP;
Toshifumi Inoue, Kawasaki, JP;
Kiyohisa Hoshino, Kawasaki, JP;
Nobuyuki Fukuda, Kawasaki, JP;
Kenji Fukuda, Kawasaki, JP;
Kazuhiro Yasuno, Kawasaki, JP;
Katsuhiko Negoto, Kawasaki, JP;
Akihiro Kameda, Kawasaki, JP;
Isamu Fukuda, Kawasaki, JP;
Atsushi Morohashi, Kawasaki, JP;
Toshifumi Inoue, Kawasaki, JP;
Kiyohisa Hoshino, Kawasaki, JP;
Nobuyuki Fukuda, Kawasaki, JP;
Kenji Fukuda, Kawasaki, JP;
Kazuhiro Yasuno, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A packet is transmitted from a transmitting device to an active communication device which transmits a reception history identifying the received packets to the transmitting device. The transmitting device transmits an active-mode request message to a standby communication device when having failed to receive the reception history from the active communication device within a predetermined time period. Then, the standby communication device becomes a new active communication device, and the active communication device becomes an old active communication device. The new active communication device transmits to the transmitting device a switching request message for switching a destination of the packet from the old active communication device to the new active communication device. The transmitting device retransmits packets that have been transmitted from the transmitting device to the old active communication device and have failed to be received by the old active communication device, to the new active communication device.