公开(公告)号：US20200374736A1

公开(公告)日：2020-11-26

申请号：US16991981

申请日：2020-08-12

Applicant: KYOCERA Corporation

Inventor： Noriyoshi FUKUTA ,  Henry CHANG

IPC: H04W24/10 ,  H04W24/08 ,  H04W16/18 ,  H04W88/06

Abstract: A user equipment according to one aspect is a user equipment of a cellular communication system, the user equipment comprising a communicator configured to perform a radio communication by WLAN and/or Bluetooth, a cellular receiver configured to receive a configuration message which is transmitted from a network of the cellular communication system and sets an MDT measurement in which the cellular communication system is set as a measurement target, a controller configured to perform a radio measurement on the cellular communication system based on the configuration message, and a cellular transmitter configured to transmit, to the network, MDT measurement information including a measurement result for the cellular communication system. The controller is configured to include the measurement result for the WLAN and/or the Bluetooth in the MDT measurement information when the measurement result for the WLAN and/or the Bluetooth is available.

公开(公告)号：US20190075612A1

公开(公告)日：2019-03-07

申请号：US16183084

申请日：2018-11-07

Applicant: KYOCERA CORPORATION

Inventor： Noriyoshi FUKUTA ,  Kugo MORITA ,  Masato FUJISHIRO

IPC: H04W76/27 ,  H04W48/12 ,  H04W72/04 ,  H04W48/10 ,  H04W8/00 ,  H04W76/10

CPC classification number: H04W76/27 ,  H04W8/005 ,  H04W48/10 ,  H04W48/12 ,  H04W52/04 ,  H04W52/367 ,  H04W52/38 ,  H04W52/383 ,  H04W72/04 ,  H04W72/042 ,  H04W72/048 ,  H04W76/10 ,  H04W76/14 ,  H04W88/06 ,  H04W88/10 ,  H04W92/18

Abstract: A user terminal has a function of device-to-device (D2D) communication, and determines whether it is in a radio resource control (RRC) idle mode, receives a system information block (SIB) broadcasted by the base station in the RRC idle mode, where the SIB includes resource information indicating usable radio resource and power information for controlling transmission power used in transmitting data to other user equipment by the D2D communication, and determines radio resources and power used to transmit the data based on the resource and power information. In another aspect, a base station is configured to broadcast the SIB.

公开(公告)号：US20190037466A1

公开(公告)日：2019-01-31

申请号：US16072613

申请日：2017-01-13

Applicant: KYOCERA CORPORATION

Inventor： Takahiro SAIWAI ,  Noriyoshi FUKUTA

IPC: H04W36/30 ,  H04W56/00 ,  H04W92/10 ,  H04W24/10 ,  H04W76/14 ,  H04L1/00

Abstract: A radio terminal according to one embodiment comprises a receiver configured to receive from a moving cell, identification information identifying the moving cell. The moving cell is managed by a movable communication device and moves along movement of the communication device. The receiver receives the identification information in a sidelink that is a direct radio link in a Proximity service.

公开(公告)号：US20190037420A1

公开(公告)日：2019-01-31

申请号：US16144879

申请日：2018-09-27

Applicant: KYOCERA CORPORATION

Inventor： Masato FUJISHIRO ,  Henry CHANG ,  Noriyoshi FUKUTA

IPC: H04W24/02 ,  H04W64/00 ,  H04W76/27

Abstract: A radio terminal according to an embodiment is used in a mobile communication system. The radio terminal includes a controller configured to transmit, to a base station, information notifying or requesting that the radio terminal transitions to an RRC idle state if the radio terminal is in a specific state. The specific state is a state in which signaling is reduced as compared with the RRC connected state and context information of the radio terminal is maintained in the network.

公开(公告)号：US20180109983A1

公开(公告)日：2018-04-19

申请号：US15845374

申请日：2017-12-18

Applicant: KYOCERA CORPORATION

Inventor： Noriyoshi FUKUTA

IPC: H04W36/00 ,  H04W24/10 ,  H04L12/26 ,  H04W16/14 ,  H04W40/00 ,  H04J11/00 ,  H04W4/02 ,  H04W48/18 ,  H04W88/06

CPC classification number: H04W36/0083 ,  H04J11/00 ,  H04L43/16 ,  H04W4/02 ,  H04W16/14 ,  H04W24/10 ,  H04W36/00837 ,  H04W36/0085 ,  H04W40/005 ,  H04W48/18 ,  H04W88/06

Abstract: A radio base station and method comprise transmitting a message including measurement parameters to a radio terminal being in a connected state, and receiving measurement results of radio environment, location information, and a time stamp from the radio terminal in response to the radio terminal transitioning from an idle state to a connected state, the measurement results being measured by the radio terminal during the idle state. A network including the radio base station uses the measurement results to detect coverage problems of the network. The measurement results include a first measurement result for a first frequency band measured by the radio terminal in accordance with the measurement parameters, and the measurement results further comprise a second measurement result for a second frequency band measured by the radio terminal during the idle state even when the measurement parameters do not include a measurement instruction for the second frequency band.

公开(公告)号：US20180070264A1

公开(公告)日：2018-03-08

申请号：US15812804

申请日：2017-11-14

Applicant: KYOCERA CORPORATION

Inventor： Takahiro SAIWAI ,  Hiroyuki ADACHI ,  Noriyoshi FUKUTA ,  Masato FUJISHIRO

IPC: H04W28/02 ,  H04W76/02 ,  H04W72/12 ,  H04W72/04 ,  H04W92/18

CPC classification number: H04W28/0278 ,  H04W72/04 ,  H04W72/042 ,  H04W72/121 ,  H04W72/1242 ,  H04W72/1284 ,  H04W76/14 ,  H04W88/04 ,  H04W92/18

Abstract: A communication method according to an embodiment, comprising: transmitting, from a base station to a radio terminal, a list indicating association between an identification of a logical channel group and a priority; generating, by the radio terminal, a buffer status report for direct communication; and transmitting, from the radio terminal to the base station, the buffer status report. The buffer status report includes an index of an destination identifier, an identifier of the logical channel group, and a buffer amount associated with the identifier of the logical channel group. In the generating the buffer status report, the radio terminal generates the buffer status report based on the list.

公开(公告)号：US20180070217A1

公开(公告)日：2018-03-08

申请号：US15808730

申请日：2017-11-09

Applicant: KYOCERA CORPORATION

Inventor： Kugo MORITA ,  Hiroyuki ADACHI ,  Noriyoshi FUKUTA

IPC: H04W4/06 ,  H04W52/02 ,  H04W8/00 ,  H04L29/08 ,  H04W56/00 ,  H04W76/02 ,  H04W4/00

CPC classification number: H04W4/06 ,  H04L12/1881 ,  H04L67/104 ,  H04W4/70 ,  H04W8/005 ,  H04W28/0215 ,  H04W52/0216 ,  H04W52/0219 ,  H04W56/0015 ,  H04W72/10 ,  H04W72/1242 ,  H04W76/14 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/164 ,  Y02D70/21

Abstract: D2D communication is appropriately controlled even in an environment in which a second user terminal inside the coverage and a first user terminal outside the coverage both exist. The first user terminal directly receives from the second user terminal device-to-device (D2D) synchronization information including coverage information that indicates that the second user terminal is in the coverage area, determines, based on the coverage information, whether the second user terminal is in the coverage area, selects the second user terminal as a synchronization reference of the first user terminal in response to determining that the second user terminal is in the coverage area, and receives usable resource information broadcasted from the second user terminal that becomes the synchronization reference, the usable resource information indicating D2D usable resources notified from a base station to the second user terminal by broadcast signaling.

公开(公告)号：US20180069653A1

公开(公告)日：2018-03-08

申请号：US15811857

申请日：2017-11-14

Applicant: KYOCERA CORPORATION

Inventor： Masato FUJISHIRO ,  Chiharu YAMAZAKI ,  Hiroyuki URABAYASHI ,  Noriyoshi FUKUTA ,  Naohisa MATSUMOTO

IPC: H04L1/00 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04L1/0004 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0027 ,  H04L5/0007 ,  H04L5/0053 ,  H04W16/14 ,  H04W72/042 ,  H04W72/12

Abstract: A base station according to an embodiment is a base station configured to perform transmission to a user terminal by use of an unlicensed band. The base station comprises: a controller configured to start the transmission from a boundary of a subframe, but also to start the data transmission from a second-half slot out of a first-half slot and the second-half slot which configure a subframe. The controller is configured to transmit downlink control information in the second-half slot to start the transmission from the second-half slot. The controller is configured to change a modulation scheme to be applied to the transmission, depending on a start timing of the transmission, while fixing a transport block size applied to the subframe. The downlink control information is a PDCCH or an EPDCCH.

公开(公告)号：US20180027553A1

公开(公告)日：2018-01-25

申请号：US15547869

申请日：2016-02-05

Applicant: KYOCERA CORPORATION

Inventor： Naohisa MATSUMOTO ,  Noriyoshi FUKUTA ,  Kugo MORITA

IPC: H04W72/04 ,  H04W16/14 ,  H04W72/08

CPC classification number: H04W76/19 ,  H04L5/0032 ,  H04W16/14 ,  H04W16/32 ,  H04W36/0027 ,  H04W68/00 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/082 ,  H04W76/10 ,  H04W76/15 ,  H04W76/20 ,  H04W76/30 ,  H04W88/08 ,  H04W88/18 ,  H04W92/12

Abstract: A user terminal according to a first aspect is used in a mobile communication system. The user terminal comprises: a receiver configured to receive, from a base station, candidate timing information indicating candidate timings of an uplink transmission on an unlicensed band channel that is a frequency channel of an unlicensed band; a controller configured to determine, by monitoring the unlicensed band channel, a transmission timing at which the uplink transmission to the base station is performed, from the candidate timings indicated by the candidate timing information; and a transmitter configured to transmit, at the transmission timing, uplink data via the unlicensed band channel to the base station.

公开(公告)号：US20170325100A1

公开(公告)日：2017-11-09

申请号：US15660676

申请日：2017-07-26

Applicant: KYOCERA CORPORATION

Inventor： Hiroyuki URABAYASHI ,  Kugo MORITA ,  Noriyoshi FUKUTA ,  Naohisa MATSUMOTO

IPC: H04W16/14 ,  H04W48/16 ,  H04W72/04

CPC classification number: H04W16/14 ,  H04W48/16 ,  H04W72/0413

Abstract: A base station according to an embodiment has a first cell in a licensed band and a second cell in an unlicensed band. The base station comprises: controller configured to execute control to transmit a discovery reference signal in the second cell. The controller executes: control to confirm whether or not there is an available channel in the unlicensed band, before transmitting the discovery reference signal; and control to transmit the discovery reference signal in the available channel in the unlicensed band. The discovery reference signal includes a cell-specific reference signal, a primary synchronization signal, a secondary synchronization signal, and a channel-state-information reference signal.