Fujitsu Corporation

Yasushi Miyagawa

Kimio Watanabe

Isamu Fukuda

Shinya Hatakeyama

Kazutoshi Kawamura

Ichiro Ayukawa

Hisamichi Hazama

Shingo Mizuno

Akihiro Kobayashi

Mitsuru Nakatsuji

Hideyuki Tsutsumi

Seiichi Yamaguchi

Naoto Iwamura

The wireless base station notifies the missing to the transmitter upon detection of missing of a data segment received from the transmitter, and the transmitter controls the header compression state of the data segment addressed to the wireless terminal upon the reception of the notification of the missing.

Method of controlling header compression in wireless communication, wireless base station, and transmitter

A transmission parameter control apparatus that improves transmission quality of real-time media in a transmission route that includes a wireless section in at least a part of the transmission route. The transmission parameter control apparatus is connected to a terminal via a network and is connected to a mobile terminal via a wireless link. The apparatus includes: an obtaining part for obtaining a quality parameter indicating transmission quality corresponding to the wireless link from signals of downlink and uplink transmission routes; and an adjustment part for adjusting a value of a transmission parameter determining a transmission scheme in the wireless link according to the quality parameter.

Transmission parameter control device

A control system for a communication apparatus has capability of coping with bus extension. The control system includes a control section and a plurality of controlled sections connected to the control section via a bus. Each controlled section accommodates at least one object to be controlled. The control section has a first interface for extension bus generation which includes a latch section and a bus transmission section. The controlled section has a second interface section for extension bus generation which includes a reception section, a judgment section, and a permission signal send-back section. The bus is formed by a bus which complies with a standard regarding mutual connection between apparatuses in a data communication system so as to send and receive pieces of information, each including a predetermined number of bits, and control signals. This makes it possible to suppress the hardware cost of channel sections and to efficiently perform highly functional monitoring and controlling.

Control system for coping with bus extension in controlling a

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Yokohama, Japan

Yasushi Miyagawa