Fujitsu Corporation

Hidefumi Takaoka

Kenji Yamada

Tadashige Iwao

Tatsuya Soneda

Syunsuke Koga

Yuichi Inao

Makoto Kawatoko

Tadashi Nakano

Toshitsugu Kobayashi

Ryoko Tamura

Hiroyuki Kadosono

Masaki Bansho

Kouji Sakata

Syoichi Urata

Yutaka Aoki

Shinji Kuriyama

A wireless communication apparatus stores therein, in an associated manner, each piece of path information on a plurality of destinations and a use frequency of data communication that is performed by using the path information. When the wireless communication apparatus receives data whose send source is a first destination, the wireless communication apparatus specifies, on the basis of the use frequency, path information that is less frequently used from among the pieces of the stored path information. The wireless communication apparatus updates the specified path information to path information whose destination is the first destination.

Wireless communication apparatus, wireless communication method, computer-readable recording medium, and wireless communication system

A communication apparatus includes an encryption key generation unit that generates encryption key information at constant encryption key generation intervals, a common key generation unit that generates common key information uniquely with respect to a generation time at common key generation intervals set longer than the encryption key generation intervals, a common key application unit that performs encryption or decryption of the encryption key information by using the common key information, and an encryption key distribution unit that makes a request to a data transmitting/receiving unit to distribute the encryption key information to a plurality of communication apparatuses to be communicated simultaneously at encryption key distribution intervals set shorter than the encryption key generation intervals to perform communication with higher security.

Communication apparatus and communication method

A wireless communication terminal including a wireless communication unit for receiving and transmitting voice signals between terminals connected through a voice channel and a data channel, a signal input/output unit for inputting and outputting voice signals for voice communication and a mixing unit, interposed between the wireless communication unit and signal input/output unit, for performing mixing operations to create a first mixed signal to be output to said signal input/output unit and second mixed signals each to be transmitted to the corresponding terminal. The wireless communication terminal is preferably used for wireless voice communication performed by three or more terminals without being interposed by a center apparatus (such as a server) or a repeater. Further, signal-receiving/transmitting is set for each wireless communication terminal whereupon convenience can be improved.

Wireless communication terminal

Growing community of inventors

Fukuoka, Japan

Hidefumi Takaoka