Kyocera Corporation

Public University Corporation Nara Medical University

Katsuhiro Mitsui

Masato Fujishiro

Yushi Nagasaka

Kugo Morita

Chiharu Yamazaki

Hiroyuki Adachi

Fangwei Tong

Henry S Chang

Hiroyuki Urabayashi

David Comstock

Naohisa Matsumoto

Atsuhisa Inakoshi

Akinori Iwabuchi

Shingo Katagiri

Yukiko Takaba

Noriyoshi Fukuta

Susumu Kashiwase

Takahiro Saiwai

Hidetaka Katou

Kenji Obayashi

An illumination device includes a light emitter configured to emit illumination light and a controller configured to control the light emitter. The controller controls the illumination light such that a first decrease ratio of melanopic illuminance of illumination light during night-time illumination to melanopic illuminance of illumination light during daytime illumination is higher than a second decrease ratio of illuminance of the illumination light during the night-time illumination to illuminance of the illumination light during the daytime illumination.

Illumination device, illumination system, and illumination control method

A user equipment, method used in user equipment, and apparatus for controlling a user equipment operate to receiving a connected mode DRX parameter configured by a base station, and transmit to the base station a message including information indicating a connected mode DRX parameter preferred by the user equipment. The connected mode DRX parameter preferred by the user equipment includes at least one of DRX-InactivityTimer, DRX-ShortCycle, and DRX-ShortCycleTimer.

Communication method, radio terminal, and processor

A user equipment, an apparatus, and a method receive from a base station configuration information on a carrier aggregation where a Licensed-Assisted Access (LAA) secondary cell using unlicensed frequency is utilized, configure the carrier aggregation based on the configuration information, receive from the base station information indicating whether uplink data transmission via the LAA secondary cell is allowed, and transmit uplink data via the LAA secondary cell only in response to receiving the information indicating that uplink data transmission via the LAA secondary cell is allowed.

Base station and user terminal for performing measurement and communication in unlicensed frequency bands

A user terminal according to an embodiment is capable of executing dual connectivity. The user terminal comprises: a controller configured to execute the dual connectivity in which a first base station configured to establish an RRC connection with the user terminal and a second base station configured to provide an additional radio resource are used; and a transmitter configured to preferentially transmit, if a radio link failure is detected between the user terminal and the first base station, to the second base station, an RRC reestablishment request for reestablishing the RRC connection.

User terminal for executing dual connectivity

An electronic device comprising a touch screen, a plurality of first keys arranged along a periphery of the touch screen, a storage configured to stores a character array, and at least one controller configured to execute a character editing process according to an operation on the first key by allocating at least one of characters and phrases included in the character array to each of the first keys and accepting, when detecting the operation on one of the first keys, editing the at least one of the characters and the phrases allocated to the first key on which the operation is detected.

Character editing based on selection of an allocation pattern allocating characters of a character array to a plurality of selectable keys

A communication method, comprises: sending, by a cellular base station configured to constitute an Evolved Universal Terrestrial Radio Access Network (E-UTRAN), a plurality of pieces of wireless LAN identification information managed by the cellular base station, to a wireless LAN termination node configured to manage a wireless LAN access point; and receiving, by the wireless LAN termination node, the plurality of pieces of wireless LAN identification information from the cellular base station. The plurality of pieces of wireless LAN identification information are sent via an interface formed between the cellular base station and the wireless LAN termination node.

Communication method, cellular base station and wireless LAN termination node

In a communication method according to an embodiment, in a procedure where a connection between a radio terminal and a network is temporarily suspended, a resumption identifier associated with context information of the radio terminal is transmitted from a first base station to the radio terminal. A part of the resumption identifier is information for identifying the first base station.

Communication method, radio terminal, processor, and base station

In a communication method according to one embodiment, a first base station sets a WLAN (Wireless Local Area Network) mobility set that is a set of one or more WLAN identifiers to a user equipment. The first base station decides a handover of the user equipment to a second base station. The first base station includes, in a handover request message for the user equipment, an identifier of a WLAN termination device associated with the one or more WLAN identifiers. The first base station transmits the handover request message including the identifier of the WLAN termination device to the second base station.

Communication method, processor, base station, and network apparatus

A communication method according to an embodiment comprises: notifying, by a base station, a radio terminal of a discontinuous reception (DRX) cycle; notifying, by a Mobility Management Entity (MME), the radio terminal of an extended DRX cycle longer than the DRX cycle; determining, by the radio terminal, whether or not the base station supports an extend DRX; using, by the radio terminal, the extended DRX cycle to execute an extended DRX operation in an idle mode, in response to determining that the base station supports the extend DRX; and using, by the radio terminal, the DRX cycle to execute a DRX operation without using the extended DRX cycle, in response to determining that the base station does not support the extend DRX.

A network apparatus according to one embodiment is provided in a radio access network of a mobile communication system. The network apparatus comprises: a storage configured to store content data delivered from a server outside the radio access network; and a controller configured to recognize content data requested by a radio terminal, and to determine whether or not the requested content data is stored in the storage. The controller is configured to, when the requested content data is stored in the storage, deliver the requested content data to the radio terminal on behalf of the server.

Network apparatus

A communication method including a base station and user terminal that is configured to communicate by using an unlicensed frequency includes receiving, from the base station, a message including first and second information. The first information is information regarding a configuration for the user terminal to report a measurement result in the unlicensed band, and the second information is information regarding a configuration of carrier aggregation. The method includes the user terminal measuring power in the unlicensed frequency and reporting, to the base station, percentage where the measured power exceeds a threshold value in a measurement period, according to the first information, and communicating with the base station by using the unlicensed frequency as a secondary carrier in the carrier aggregation, according to the second information.

In a dual connectivity, the X2-GW collects operation information from a plurality of HeNBs. The X2-GW obtains a measurement result of radio quality reported by the UE to the MeNB from the MeNB. Based on the operation information of the HeNB and the measurement result, the X2-GW identifies transmission destination of a SeNB addition request message received from the MeNB, and sends the SeNB addition request message to the identified HeNB. Upon acquiring an acknowledgment message for the SeNB addition request message from the HeNB, the X2-GW sends the message to the MeNB.

Network apparatus and base station

A control method comprises: transmitting, by a first management apparatus included in a first network allocated with a first frequency band, to a second network allocated with a second frequency band, an allocation request signal for requesting allocation of a part of the second frequency band to the first network, the signal being generated on the basis of a usage state of the first frequency band, determining, by a second management apparatus included in the second network, on the basis of a usage state of the second frequency band, a bandwidth to be allocated to the first network out of the second frequency band and an allocated frequency band corresponding to the bandwidth; managing the allocated frequency band as unavailable; transmitting, an allocation request response signal including information indicating the allocated frequency band, to the first network; and managing the allocated frequency band as available in the first network.

Control method and management apparatus

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.

Base station and radio terminal

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.

Growing community of inventors

Kawasaki, Japan

Katsuhiro Mitsui