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. 07, 2006
Filed:
Jul. 24, 2000
Tetsuhiko Hirata, Yokohama, JP;
Masashi Yano, Fujisawa, JP;
Norihisa Matsumoto, Kawasaki, JP;
Susumu Matsui, Machida, JP;
Shoji Fukuzawa, Fujisawa, JP;
Atsushi Teshima, Yokohama, JP;
Mika Mizutani, Santa Clara, CA (US);
Tetsuhiko Hirata, Yokohama, JP;
Masashi Yano, Fujisawa, JP;
Norihisa Matsumoto, Kawasaki, JP;
Susumu Matsui, Machida, JP;
Shoji Fukuzawa, Fujisawa, JP;
Atsushi Teshima, Yokohama, JP;
Mika Mizutani, Santa Clara, CA (US);
Hitachi, Ltd., Tokyo, JP;
Abstract
In a mobile IP network system containing a plurality of radio access networksfor connecting with mobile stationsvia radio links and an IP networkconnected with a plurality of packet nodes for transferring IP packets, each of the radio access networks has at least one base station controllerand at least one radio base stationconnected to the base station controller. Each of the base station controllersin the radio access network is connected to the plurality of packet nodes to each other via a networkand selects one of the plurality of packet nodes in accordance with a state of each mobile station to establish a logical connection to be used in IP packet communication of the mobile station.