Sharp Kabushiki Kaisha Corporation

Sharp Kabushuki Kaisha

Miki Amano

Takashi Murai

Suguru Toyokawa

Shinya Kimura

Masahiro Ohara

Reiko Aoyama

Manabu Kusaka

A control system includes a first network including a controller, a second network including one or more controlled devicesto, and a translatorcorrelated with the first network and with the second network. The controlled devicecomprises a controlled device information management unitwhich manages controlled device information related to the controlled device; and a controlled device information communication unitwhich sends controlled device information with appropriate timing. The translatorcomprises a controlled device information proxy creating means which creates controlled device information proxiesbased on controlled device information acquired from controlled devices; and an information managing means for registering and managing controlled device information and controlled device information proxies. The controllercomprises a means which acquires controlled device information proxiesfrom the translatorand issues operating instructions for operating the controlled devicesto. With this control system, an operator at a remote operation center can easily and remotely control equipment belonging to a network different from a network to which the remote operation center belongs.

Control system

A partner appliance that communicates with a mobile node is connected via a communication network with a home agent and a foreign agent that relay the communication between the mobile node and the partner appliance. When the mobile node, moving during the communication, comes to be connected to a foreign link of the foreign agent, a moved address is assigned thereto. If the mobile node receives call setup request information regarding data transmission from the partner appliance via the home agent while moving, it determines, based on the received call setup request information, whether real-time transmission is required for the data. If so, the mobile node notifies the partner appliance of the moved address assigned thereto. When the moved address is notified, a communication path is established between the mobile node and the partner appliance, and the partner appliance sends the data to the mobile node via the communication path based on the moved address notified. Since the communication path includes the communication network and the foreign agent but does not include the home agent, transmission delay is avoided for the data requiring real-time transmission.

System and method for mobile communication avoiding delay in data transmission

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Osaka, Japan

Miki Amano