Kyocera Corporation

Maimi Monzen

Masashi Iwami

Sakiko Nakamura

A relay apparatus of this disclosure includes: a communication unit that communicates with a radio device by radio; a storage unit that stores connection history information on a past radio connection with the radio device; and a controller that specifies a frequency offset, which is used at a time when the radio connection with the radio device is initiated, based on the connection history information.

Relay apparatus specifying frequency offset based on connection history and method thereof

A communication section controls the transmission directivity of a plurality of antennas, based on a known signal transmitted from a communication terminal. A radio resource allocating section allocates a downlink radio resource and allocates an uplink radio resource. A grouping processing section for classifying classifies a plurality of communication terminals with which the communication section communicates into a first terminal group executing an application with high communication quality of transfer data and a second terminal group executing an application with low communication quality of transfer data. A unit period is determined in which an uplink radio resource for a known signal usable for the transmission of the known signal by a communication terminal and a downlink radio resource appear. A correspondence between the downlink radio resource and the uplink radio resource for the known signal is defined for null steering based on the known signal in the unit period.

Base station and communication control method

A wireless communication device according to the present invention includes a standard signal holding unit for holding standard signals, a correlation value calculation unit for performing a correlation operation between a received signal and the standard signals, and a reference signal selection unit for determining a reference signal from among the standard signals on the basis of a correlation operation result obtained by the correlation value calculation unit. When a correlation value peak which provides a maximum value is not detected among a correlation values obtained by the correlation operation between the received signal and the standard signals, the reference signal selection unit repeats a predetermined number of times, a process of performing a correlation operation between a new standard signal which is generated so that a head of a data part is located at some midpoint in a predetermined symbol interval and the received signal.

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Yokohama, Japan

Maimi Monzen