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:
Mar. 19, 2013
Filed:
May. 09, 2011
Hiroto Nakagawa, Tokyo, JP;
Koji Watanabe, Kawasaki, JP;
Yosuke Takahashi, Kawasaki, JP;
Yuichiro Katsu, Yokohama, JP;
Hiroto Nakagawa, Tokyo, JP;
Koji Watanabe, Kawasaki, JP;
Yosuke Takahashi, Kawasaki, JP;
Yuichiro Katsu, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
To realize a handover in which a gateway connecting to the access networks using different protocols is an anchor. In a communication system, the gateway holds a service identifier management table for converting a service identifier of different kind with the protocol into a PDN identifier, and at the time of handover, specifies a session to be held with the user identifier and the PDN identifier, selects the same PDN connected to the movement source, and reassigns the same IP address that has been already assigned at the movement source.