公开(公告)号：US20190356424A1

公开(公告)日：2019-11-21

申请号：US16525940

申请日：2019-07-30

Applicant: KYOCERA Corporation

Inventor： Hiroyuki URABAYASHI ,  Masato FUJISHIRO

IPC: H04L1/18 ,  H04L5/00 ,  H04W72/04

Abstract: A user equipment according to an embodiment comprises a processor and a memory coupled to the processor. The processor is configured to receive a first control information from a base station, the first control information designating a first time region on which a first Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) to be transmitted, the first HARQ-ACK corresponding to a first data transmitted on a first Physical Downlink Shared Channel (PDSCH) in which a transmission time interval is shorten than one subframe, the first time region being shorten than one subframe. The processor is configured to attempt to receive a second data transmitted on a second PDSCH in which a transmission time interval is one subframe. The processor is configured to transmit a second HARQ-ACK corresponding to the second data on the first time region.

公开(公告)号：US20190320306A1

公开(公告)日：2019-10-17

申请号：US16399833

申请日：2019-04-30

Applicant: KYOCERA Corporation

Inventor： Hiroyuki URABAYASHI ,  Masato FUJISHIRO ,  Hiroyuki ADACHI

IPC: H04W4/80 ,  H04W72/04 ,  H04W88/02 ,  H04W76/27 ,  H04W80/02

Abstract: A mobile communication method is a mobile communication method for performing communication between a base station and a user terminal by using a narrow band having a predetermined bandwidth. The mobile communication method comprises: a step of performing, by the user terminal, first communication related to control information by using a first narrow band in an n-th subframe; and a step of performing, by the user terminal, second communication related to user data by using a second narrow band different from the first narrow band in an (n+1)-th subframe. A symbol time region at an end of the n-th subframe and/or a symbol time region at a head of the (n+1)-th subframe are non-used regions provided for the user terminal to switch from the first narrow band to the second narrow band.

公开(公告)号：US20190098581A1

公开(公告)日：2019-03-28

申请号：US16184327

申请日：2018-11-08

Applicant: KYOCERA CORPORATION

Inventor： Fangwei TONG ,  Hiroyuki URABAYASHI ,  Atsuhisa INAKOSHI ,  Chiharu YAMAZAKI

IPC: H04W52/14 ,  H04W52/08 ,  H04B17/10 ,  H04B17/354 ,  H04W72/04 ,  H04W52/24

Abstract: A base station according to one embodiment may comprise a receiver configured to receive first information from a radio terminal, the first information being transmitted based on a measurement result of a reception signal from a neighbouring cell; and a transmitter configured to transmit second information for reducing a transmission power of the radio terminal to the radio terminal when the measurement result of the reception signal from the radio terminal exceeds a threshold value.

公开(公告)号：US20190059126A1

公开(公告)日：2019-02-21

申请号：US16168908

申请日：2018-10-24

Applicant: KYOCERA CORPORATION

Inventor： Kugo MORITA ,  Hiroyuki URABAYASHI

IPC: H04W76/18 ,  H04W48/12 ,  H04W36/38 ,  H04W36/30 ,  H04B17/318

Abstract: A radio terminal according to one embodiment comprises a receiver configured to receive from a relay node a connection prohibition message for restricting a cell to be connected at a predetermined frequency. The connection prohibition message is a message for prohibiting transmission of a connection request at the predetermined frequency.

公开(公告)号：US20180220442A1

公开(公告)日：2018-08-02

申请号：US15933782

申请日：2018-03-23

Applicant: KYOCERA CORPORATION

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

IPC: H04W72/12 ,  H04W16/14 ,  H04W72/04

CPC classification number: H04W72/1273 ,  H04L5/0048 ,  H04L27/0006 ,  H04W16/14 ,  H04W48/12 ,  H04W56/0015 ,  H04W72/044 ,  H04W72/1247 ,  H04W88/08 ,  H04W88/12

Abstract: A base station according to an embodiment includes a controller configured to perform a process of transmitting, in a specific frequency band shared by a plurality of operators and/or a plurality of communication systems, a burst signal including data or a control signal and a discovery reference signal including a reference signal and/or a synchronization signal. If there is a transmission duration of the discovery signal within a transmission duration of the burst signal after starting the transmission of the burst signal, the controller performs a process of transmitting the discovery reference signal even within the transmission duration of the burst signal.

公开(公告)号：US20180206241A1

公开(公告)日：2018-07-19

申请号：US15921231

申请日：2018-03-14

Applicant: KYOCERA CORPORATION

Inventor： Naohisa MATSUMOTO ,  Chiharu YAMAZAKI ,  Hiroyuki URABAYASHI ,  Kugo MORITA ,  Hiroyuki ADACHI

IPC: H04W72/08 ,  H04W72/04 ,  H04W16/14 ,  H04W56/00 ,  H04W88/08

CPC classification number: H04W72/082 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0053 ,  H04W16/14 ,  H04W56/001 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/1273 ,  H04W88/08

Abstract: Abase station and user terminal are configured to perform radio communication with one another in a specific frequency band shared by a plurality of operators and/or a plurality of communication systems. The base station is configured to transmit to the user terminal a first synchronization signal at a start timing of downlink transmission, transmit a second synchronization signal at a timing different from the start timing, and differentiate a signal configuration related to the first synchronization signal from a signal configuration related to the second synchronization signal. A signal configuration related to the first synchronization signal is different from a signal configuration related to the second synchronization signal, and the user terminal distinguishes, based on a difference of the signal configuration, between the first synchronization signal and the second synchronization signal.

公开(公告)号：US20170295576A1

公开(公告)日：2017-10-12

申请号：US15512739

申请日：2015-09-18

Applicant: KYOCERA CORPORATION

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

IPC: H04W72/04 ,  H04W72/08 ,  H04W74/08 ,  H04L5/00 ,  H04W16/14 ,  H04W74/00

CPC classification number: H04W72/0453 ,  H04B1/713 ,  H04J11/0069 ,  H04L5/0051 ,  H04W16/00 ,  H04W16/14 ,  H04W48/12 ,  H04W48/18 ,  H04W52/146 ,  H04W52/242 ,  H04W56/00 ,  H04W56/0015 ,  H04W72/085 ,  H04W74/004 ,  H04W74/0833 ,  H04W88/06 ,  H04W88/10

Abstract: A base station according to an embodiment comprises a controller configured to manage a first cell operated using an allocation frequency band allocated by a mobile network operator and a second cell operated using a specific frequency band where occupying a frequency is not allowed by the mobile network operator. The controller performs processes of: transmitting to a mobile station through the first cell, an instruction signal that instructs transmission of a random access preamble through the second cell; and notifying the mobile station, an offset value of uplink transmission timing used in a communication in the second cell, on the basis of the random access preamble received from the mobile station through the second cell.

公开(公告)号：US20170099616A1

公开(公告)日：2017-04-06

申请号：US15382355

申请日：2016-12-16

Applicant: KYOCERA Corporation

Inventor： Fangwei TONG ,  Chiharu YAMAZAKI ,  Hiroyuki URABAYASHI ,  Katsuhiro MITSUI

IPC: H04W28/06 ,  H04W24/10 ,  H04B17/309

CPC classification number: H04W28/06 ,  H04B17/309 ,  H04L1/0026 ,  H04L1/003 ,  H04W24/10

Abstract: A wireless communication device for performing communication with a controlled wireless communication device that is controlled by the wireless communication device includes a controller configured to estimate channel quality of a channel that is used in feedback of a signal from the controlled wireless communication device, dynamically adjust, on the basis of the estimated channel quality, the number of quantized bits to be used when the controlled wireless communication device quantizes channel state information, and notify the controlled wireless communication device of the dynamically adjusted number of quantized bits. The controller is also configured to adjust the number of quantized bits such that the number of quantized bits increases as the estimated channel quality improves.

公开(公告)号：US20170094569A1

公开(公告)日：2017-03-30

申请号：US15125353

申请日：2015-03-20

Applicant: KYOCERA CORPORATION

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

IPC: H04W36/08 ,  H04W48/10 ,  H04W48/16 ,  H04W4/06

CPC classification number: H04W36/08 ,  H04L5/0001 ,  H04L5/0053 ,  H04L12/189 ,  H04W4/06 ,  H04W36/00 ,  H04W36/0007 ,  H04W36/0069 ,  H04W48/10 ,  H04W48/16

Abstract: A communication control method in a mobile communication system, wherein each of a plurality of cell sets a CSS that is applied in common to all UEs 100 within the corresponding cell, and information associated with system information (an SIB 13) that is necessary for the reception of the MBMS control information is arranged in the CSS. The communication control method includes a step of simultaneously performing, by a UE 100, communication with a first cell operating as a main cell in which blind decoding for the CSS is required, and communication with a second cell operating as a subordinate cell other than the main cell; and a step of transmitting, by the UE 100, to the first cell, a main cell change request for changing the main cell from the first cell to the second cell.

公开(公告)号：US20220104047A1

公开(公告)日：2022-03-31

申请号：US17643374

申请日：2021-12-08

Applicant: KYOCERA Corporation

Inventor： Naohisa MATSUMOTO ,  Kugo MORITA ,  Hiroyuki ADACHI ,  Hiroyuki URABAYASHI ,  Chiharu YAMAZAKI

IPC: H04W24/08 ,  H04W16/14 ,  H04W36/00 ,  H04W24/10

Abstract: A user equipment, method used in a user equipment, and an apparatus for a user equipment include receiving from a first cell operated in a licensed band, configuration information configuring a second cell operated in an unlicensed band, performing a listen-before-talk (LBT) procedure on the second cell, counting a number of failures of the LBT procedure on the second cell, and transmitting information based on the number of failures of the LBT procedure on the second cell, to the first cell operated in the licensed band, the information indicating the failure of the LBT procedure on the second cell.