Softbank Corporation

Mitsubishi Electric Corporation

Jumpei Takagi

Masahiko Nanri

Masanori Nomachi

Takanori Takii

Takayuki Yoshimura

Naofumi Takenaka

Mizuo Sakai

Masafumi Tomita

Kazuya Honda

An air-conditioning apparatus includes configured to, when a cooling operation mode is changed into one of multiple dehumidifying operation modes, select the one of the multiple dehumidifying operation modes on the basis of a value of a sensible heat ratio difference ΔSHF that is a difference between a target sensible heat ratio acquired from an indoor temperature detected by an indoor temperature sensor, a target indoor temperature, and target indoor humidity and a theoretical minimum possible sensible heat ratio acquired from enthalpy of an indoor air, enthalpy of blown air from the indoor unit when relative humidity is 100%, and enthalpy of sensible heat.

Air-conditioning apparatus

Communication quality of a terminal device which directly connects to a macro cell base station is guaranteed and communication quality of a terminal device which connects to the macro cell base station via a relay apparatus is guaranteed. A communication control system includes: an acquisition unit that acquires communication status information including a past communication traffic volume between the macro cell base station and a relay apparatus; a setting unit that presets a first permitted communication traffic volume for a first communication period during which a communication traffic volume between the macro cell base station and the relay apparatusis equal to or more than a specified communication traffic volume, and a second permitted communication traffic volume for a second communication period during which the communication traffic volume is less than the specified communication traffic volume, on the basis of the communication status information; a measurement unit that measures a current communication traffic volume between the macro cell base station and the relay apparatus; and a control unit that controls the second permitted communication traffic volume on the basis of the measured current communication traffic volume.

Communication control system, communication control method, program, and relay apparatus

Beamforming for radio communication (uplink) from a relay apparatus to a donor base station is performed accurately. A relay apparatusis a relay apparatusfor relaying communication between a terminal deviceand a donor base stationand includes: an amplitude and phase measurement unitthat measures an amplitude and phase of radio communication from the donor base stationto the relay apparatus; and a beam adjusterthat performs beamforming with respect to the donor base stationby adjusting amplitudes and phases from a plurality of antennas used at the relay apparatusby measuring the amplitude and the phase by using the amplitude and phase measurement unit, wherein during a time slot when the terminal devicedoes not exist in a service area of the relay apparatus, the relay apparatusdetects no existence of the terminal devicein the service area and stops access radio, the amplitude and phase measurement unitmeasures the amplitude and the phase, and the beam adjusterperforms the beamforming with respect to the donor base station, after which the access radio is restarted.

Relay apparatus and its relay method

Growing community of inventors

Tokyo, Japan

Jumpei Takagi