Kyocera Corporation

Toyota Jidosha Kabushiki Kaisha

Akinori Iwabuchi

Masato Fujishiro

Kugo Morita

Noriyoshi Fukuta

Yushi Nagasaka

Henry S Chang

Chiharu Yamazaki

Fangwei Tong

Takashi Inoue

Katsuhiro Mitsui

Takashi Maekawa

Ryuuichi Sawada

Tohru Sunaga

Takeo Oshima

Haruo Yanagisawa

Chinatsu Sakurai

Shinya Tamizu

Hiroyuki Adachi

Kaoru Kusafuka

Atsuhisa Inakoshi

Tadayuki Watanabe

Kazuya Kiuchi

Kazumasa Shichiri

Hironobu Kobayashi

A base station according to an embodiment supports full-dimension MIMO (FD-MIMO). The base station includes: an antenna array having antenna elements arranged two-dimensionally in a horizontal direction and a vertical direction; and a controller configured to perform a process of transmitting a dedicated reference signal that is a reference signal used for measurement of channel characteristics and is individually generated for a radio terminal. The controller is configured to select a specific target radio terminal from among target radio terminals to be connected to the base station, and perform a process of transmitting the dedicated reference signal only to the specific target radio terminal.

Base station and radio terminal

A base station according to an embodiment comprises: a controller configured to receive an identifier of a wireless LAN access point added in a wireless LAN termination apparatus from the wireless LAN termination apparatus.

A user terminal performs dual connectivity communication with a first base station and a second base station. The user terminal has a controller that performs a process of transmitting data belonging to a split bearer to the first base station via a first transmission path that passes through the first base station and via a second transmission path that passes through the second base station. When performing the process of transmitting the data to the first base station, the controller autonomously distributes the data to the first transmission path and the second transmission path without relying on an instruction from the first base station.

User terminal and radio communication apparatus

A user terminal comprises a receiver configured to receive, configuration information configuring measurement for a queuing delay of data packet in an uplink, from a radio base station in a dedicated manner; a controller configured to perform the measurement; and a transmitter configured to report a result of the measurement to the radio base station per unit time. The configuration information includes information indicating length of the unit time and threshold information indicating a threshold related to the queuing delay. The controller is configured to perform the measurement per unit time. The transmitter is configured to report the result of the measurement upon measuring the queuing delay exceeding the threshold within the unit time. The transmitter is configured to not report the result of the measurement upon measuring the queuing delay not exceeding the threshold within the unit time.

User terminal, communication method and apparatus

A mobile communication system is a mobile communication system that performs communication between a base station and a user terminal. When a directivity is formed to transmit a radio signal, the base station transmits a first radio signal including identification information to identify the formed directivity and a reference signal. The user terminal receives the first radio signal and transmits a second radio signal including quality information when receiving the reference signal and the identification information. The base station receives the second radio signal and determines the directivity to be formed based on the identification information and the quality information.

Mobile communication system, base station, and user terminal

A mobile communication system according to the embodiment supports cellular communication in which a data path passes through a network and D2D communication that is direct device-to-device communication in which a data path does not pass through the network. A frequency division multiplexing scheme is applied to the cellular communication and a code division multiplexing scheme is applied to the D2D communication. The network assigns a spread code having orthogonality to a user terminal in response to a request from the user terminal. The user terminal performs the D2D communication by using the spread code assigned by the network.

Mobile communication system, user terminal, and base station

A base station () comprises a battery () and is driven by power supplied from a power system or by power supplied by the battery (). The base station () includes a radio communication unit () that sends information indicating the remaining power amount of the battery () to a radio terminal.

Communication control method, base station, radio terminal, and processor

A base stationis provided with a batteryand is capable of being driven by power supplied from the battery, comprises: a network communication unitconfigured to transmit remaining power amount information indicating a remaining power amount of the batteryto another base station; and a communication control unitconfigured to control the transmission of the remaining power amount information to the other base station in accordance with the remaining power amount of the battery.

Communication control method and base station

A communication control method in a base station that includes a battery and is driven by power supplied from a power system or power supplied from the battery, comprises a transmission step of transmitting information indicating a remaining power amount of the battery to another base station.

Disclosed is a control system () provided with: a generation apparatus () for generating control information that is information based on demand and supply of power generated at a power plant (), and that is to be used for controlling power at the location of consumers () of electric power to whom power generated at the power plant (); and a correction apparatus () for correcting the control information, taking into consideration either a distributed power supply or a storage battery that can supply power to a consumer group () of electric power. Power control is executed at the location of the consumers who comprise the consumer group () of electric power, using the corrected control information.

Control system, correction device, and power control method

An object of the present invention is to simplify a calibration operation of a camera and to shorten a time necessary for calibration. A camera calibration deviceis mounted on a predetermined position of a movable objectand includes a cameraconfigured to take an image including an indexprovided outside the movable object, an image superimposing unitconfigured to generate a superimposed image by superimposing a calibration objecthaving a position adjustment part and a rotation adjustment part on the image taken by the camera, and a calculation unitconfigured to calculate, based on a position of the calibration objectafter being shifted in the superimposed image such that an end or a center of the indexmeets the position adjustment part and a part of the index other than the end or the center overlaps the rotation adjustment part, parameters relative to a pan angle, a tilt angle and a roll angle for calibration of the camera mounting position.

Growing community of inventors

Machida, Japan

Akinori Iwabuchi