Japan Radio Co., Ltd.

Aisin Seiki Kabushiki Kaisha

Kunimitsu Arai

Satoshi Maeda

Katsuhiko Sato

Eiji Niwa

Yoshichika Konishi

Kouji Kashima

Sadayuki Katsumata

Shigeyuki Asami

Yusuke Egawa

A wireless communication unit and a wireless network system enable a plurality of wireless communication units to be wirelessly cooperated with a simple structure, can easily realize cooperative operations, and can execute IP packet transfer control without acquiring communication path information from an external network. A relay wireless communication portion that is connectable to an upstream unit (upstream wireless base station portion) that is another upstream wireless communication unit via an upstream inter-unit wireless bearer is provided. A wireless base station portion is connectable to a downstream unit (downstream relay wireless communication portion) that is another downstream wireless communication unit via a downstream inter-unit wireless bearer. The downstream inter-unit wireless bearer and the upstream inter-unit wireless bearer are constructed according to a wireless protocol stack of the same method as that of a terminal wireless bearer that connects a mobile terminal to each wireless base station portion.

Wireless communication unit and wireless network system using the same

A mobile body-mounted communication device mounted in a mobile body such as a vehicle and making difficult the long-time tracking of the moving path of the mobile body. The mobile body-mounted communication device mounted in a mobile body and used for transmitting/receiving packet information is characterized by comprising a borrowing address acquiring section for acquiring lending addresses as borrowed addresses from an address management device managing lending addresses, a borrowing time information acquiring section for acquiring information representing predetermined times during which the borrowing addresses can be used from the address management device, and a transmitting section for transmitting packet information including information on a borrowing address out of the borrowing addresses and the mobile body during the predetermined borrowing times determined for the borrowing addresses.

Mobile body-mounted communication apparatus and address management apparatus

Growing community of inventors

Tokyo, Japan

Kunimitsu Arai