Fujitsu Corporation

Yoshiyuki Seguchi

Kazuhiro Muraoka

Hiraku Koganemaru

Keiichi Nakatsugawa

Fumiyuki Iizuka

Nobutsugu Fujino

Shinichi Matsumoto

Itaru Nakagawa

Hiroyuki Yamashima

Hitoshi Koike

Toshihiro Ide

Hidetoshi Abeta

Masahiko Fuse

Takeshi Kamura

Ken-ichi Takeshita

Naotaka Tsuji

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 communication control system comprising a plurality of user terminals connected via a network composed of a plurality of sub networks; and a home agent managing the addresses of the plurality of user terminals. The home agent stores the care-of addresses of the plurality of user terminals, which are associated with one home address, in a user data storage unit. When update information including a care-of address is received from the predetermined user terminal, the home agent finds a sub network to which the predetermined user terminal is connected based on the update information, references the user data storage unit to determine the care-off address of an appropriate user terminal that is one of user terminals connected to the sub network, and transfers information, which is sent to the home address, to the determined care-of address.

Communication control system

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

An IP network system includes an IP network divided into a plurality of segments, an MN (mobile node) whose a Care of address is set for each segment where it is located, and a CN (corresponding node) which is a communication partner of the MN. The IP network system further includes a Care of Address managing unit for managing at least an old Care of Address set in a segment before movement of the MN and a new Care of Address set in another segment after movement of the MN, a packet receiving unit receiving a packet addressed to the old Care of Address at least after the MN is relocated to the another segment, the packet being transmitted from the CN, and a packet transfer unit transferring the packet addressed to the old Care of Address to the new Care of Address managed by the Care of Address managing unit, the packet addressed to the old Care of Address being received by the packet receiving unit.

Mobile communication system and method thereof

A service program for execution of a service is divided into a server control module for execution of the service in a server, a display control module for providing a display control in a client, an initial setting module defining a method of acquiring a service module prepared based on the type of client and required for the client, and a common module operable in the operating environment of the server and the client both. When a shortage of resources is detected in the client during execution of this service program then a portion of the common modules is executed in the server, and when a shortage of resources is detected in the server then a portion of the common modules is executed in some other server.

System, apparatus, method and computer program product for processing distributed service modules

A trading system wherein each client and a trader respectively have a metadata generating portion for describing character string type parameters of each operation with metadata including a service type and a service type context which is supplementary information of the service type individually or all together, and a metadata interpreting portion for interpreting the metadata in its entirety. The client requesting a registration, an export, or an import to the trader can include authentication information and authority information in the metadata, whereby an authentication processing portion of the trader performs an authentication processing based on the authentication information and the authority information.

Trading system

Growing community of inventors

Fukuoka, Japan

Yoshiyuki Seguchi