Fujitsu Corporation

Naotaka Tsuji

Keiichi Nakatsugawa

Fumiyuki Iizuka

Nobutsugu Fujino

Itaru Nakagawa

Yoshiyuki Seguchi

Kazuhiro Muraoka

Hitoshi Koike

Hidetoshi Abeta

Hiraku Koganemaru

Takeshi Kamura

Masahiko Fuse

Zenichi Yashiro

Zenichi Fujitsu Limited Yashiro

Keiichi Fujitsu Limited Nakatsugawa

Nobutsugu Fujitsu Limited Fujino

Itaru Fujitsu Limited Nakagawa

Hitoshi Fujitsu Limited Koike

Fumiyuki Fujitsu Limited Iizuka

A mobile node is arranged to perform a high-quality hand-over operation for eliminating an interruption time in communication and keeping the continuance of communication excellent. The mobile node has a function of interfacing with networks and includes a network quality monitor, a hand-over controller, and a network controller. The network quality monitor operates to monitor a network quality based on at least one of an intensity and a radio bandwidth of a radio wave received by network devices. The hand-over controller performs the hand-over operation of transmitting a care of address to an address registering destination in response to a state of the network quality before a communication is disconnected, changing a route of communication information, and switching a connecting destination into a new network. The network controller receives a response that indicates an update of the care of address in the address registering destination and keeping a function of receiving data from the network before being switched until the communication is disconnected.

Mobile node

Growing community of inventors

Yokohama, Japan

Naotaka Tsuji