Fujitsu Corporation

Ryusuke Kiryu

Kazuo Kawabata

Tsuyoshi Shimomura

Kotaro Shiizaki

Takao Nakagawa

A base transceiver station performing communications with user equipment, includes a receiving unit to receive an uplink transmission signal containing a propagation path fluctuation value between a self-device and the user equipment from the user equipment; and a communication permitting unit to control a period of time during which a permission of communications is given to the user equipment based on the propagation path fluctuation value.

Base transceiver station

Provided is a preamble receiving apparatus, including: a receiving unit receiving from a transmitting apparatus a frame having a format which contains a preamble section and a margin section subsequent to the preamble section; and a reception processing unit detecting a preamble signal which is transmitted in the preamble section in the transmitting apparatus from the received frame, wherein the reception processing unit includes: a correlation processing unit which defines as a search section a time having a predetermined starting point and which is equal to or shorter than the margin section, and creates a power profile for each of divided sections through a correlating process operation related to a plurality of divided sections obtained by dividing the search section; and a coupled profile creating unit for creating a coupled power profile by coupling the power profile for each of the divided sections to each other.

Growing community of inventors

Kawasaki, Japan

Ryusuke Kiryu