Fujitsu Corporation

Takashi Iwabuchi

Hiroki Ooi

Takafumi Terahara

George Ishikawa

Tomoo Takahara

Junichi Kumasako

Yasushi Hara

Masaaki Kitaguchi

A wireless communication terminal comprises a detection section, an acquisition section and a control section. The detection section detects activation of a voice telephone service application. The acquisition section acquires wireless station information transmitted from a wireless station that is a communication partner. The control section is set so as to ensure that a wireless receiver that receives wireless station information from the wireless station is always put in the ON condition when activation of the voice telephone service application is detected by the detection section. The control section sets the reception processing interval for which wireless station information is received and processed by the wireless receiver to a first interval in accordance with the wireless station information acquired by the acquisition section. The first interval is a time interval in which reception of voice telephone service incoming calls during standby is enabled.

Radio communications terminal and radio communications method

In order to compensate for chromatic dispersion ad dispersion slope over an entire wavelength band of the optical signal, the wavelength band is split into a plurality of bands, and chromatic dispersion compensation is made to make chromatic dispersion in a central wavelength of each of the bands zero.

Chromatic dispersion compensating apparatus

A repeating apparatus disposed at an end point of each divisional repeating interval of a light transmission line performs a first dispersion compensation step, an optical add/drop multiplexing step and a second dispersion compensation step to perform repeating transmission. The ratio of an over compensation amount at the second dispersion compensation step to the sum of dispersion compensation amounts at the first and second dispersion compensation steps is set so as to gradually vary together with the transmission distance from the terminal apparatus for transmission at which the repeating apparatus is disposed on the light transmission line so that degradation of wavelengths to be received by the terminal apparatus for reception is suppressed while dispersion compensation is performed with a high degree of accuracy at each optical add/drop multiplexing point on the transmission line.

Wavelength division multiplexing optical repeating transmission method and repeating apparatus

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Sapporo, Japan

Takashi Iwabuchi