Fujitsu Corporation

Masahiko Fuse

Keiichi Nakatsugawa

Fumiyuki Iizuka

Nobutsugu Fujino

Itaru Nakagawa

Eiji Ishioka

Kazuhiro Muraoka

Yoshiyuki Seguchi

Hitoshi Koike

Shinya Kimura

Kazutaka Satoh

Masayuki Kurisu

Hidetoshi Abeta

Hiraku Koganemaru

Makoto Shinohara

Takeshi Kamura

Naotaka Tsuji

Makoto Funaoka

Toshifumi Aso

Masaya Ishida

Zenichi Yashiro

Itaru Fujitsu Limited Nakagawa

Hitoshi Fujitsu Limited Koike

Fumiyuki Fujitsu Limited Iizuka

Zenichi Fujitsu Limited Yashiro

Keiichi Fujitsu Limited Nakatsugawa

Nobutsugu Fujitsu Limited Fujino

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

A communication terminal having a wireless communication facility including sending and receiving a message which is sent to a receiving terminal without a send request from a receiving terminal through a message center, including: a message sending/receiving unit sending and receiving the message; a time control unit controlling current time; a message analysis unit analyzing a message which is sent by a message center, received by the message sending/receiving unit, and includes time information assigned by a message center, and retrieving the time information; and a time setting unit setting in the time control unit a time indicated by the time information retrieved by the message analysis unit as a current time.

Communication terminal, message center, time control program storage medium, and remote time setting program storage medium

Growing community of inventors

Sapporo, Japan

Masahiko Fuse