公开(公告)号：US10750542B2

公开(公告)日：2020-08-18

申请号：US15807792

申请日：2017-11-09

Applicant: KYOCERA CORPORATION

Inventor： Masato Fujishiro ,  Kugo Morita ,  Hiroyuki Adachi ,  Noriyoshi Fukuta

IPC: H04W74/08 ,  H04W72/12 ,  H04W76/10 ,  H04W74/00

Abstract: A radio terminal according to an embodiment includes a controller configured to control a random access procedure. The random access procedure includes first processing of transmitting a random access preamble to a base station, second processing of receiving a random access response from the base station, and third processing of performing uplink transmission to the base station based on the random access response. The controller is configured to notify, in the first processing or the third processing, the base station of an amount of uplink data in a transmission buffer of the radio terminal.

公开(公告)号：US10382988B2

公开(公告)日：2019-08-13

申请号：US15566245

申请日：2016-04-11

Applicant: KYOCERA CORPORATION

Inventor： Yushi Nagasaka ,  Noriyoshi Fukuta ,  Hiroyuki Adachi

IPC: H04W24/08 ,  H04L12/26 ,  H04W16/32 ,  H04W36/12 ,  H04W72/04 ,  H04W76/10 ,  H04W36/00 ,  H04W36/08

Abstract: A communication device according to an embodiment comprises: a controller configured to perform radio communication with another communication device in a mobile communication system to which an MDT function is applied. The controller obtains an MDT measurement result obtained by measuring a parameter in the radio communication. The parameter is a parameter affected by a latency reduction function. The controller adds, to the MDT measurement result, identification information on whether or not the latency reduction function is applied, depending on whether or not the latency reduction function is applied to the radio communication.

公开(公告)号：US10356836B2

公开(公告)日：2019-07-16

申请号：US15547869

申请日：2016-02-05

Applicant: KYOCERA CORPORATION

Inventor： Naohisa Matsumoto ,  Noriyoshi Fukuta ,  Kugo Morita

IPC: H04W72/04 ,  H04W76/19 ,  H04W76/10 ,  H04W76/20 ,  H04W16/32 ,  H04W68/00 ,  H04W88/18 ,  H04W92/12 ,  H04W76/30 ,  H04W16/14 ,  H04W72/08 ,  H04W76/15 ,  H04L5/00 ,  H04W36/00 ,  H04W88/08

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：US10299306B2

公开(公告)日：2019-05-21

申请号：US15844677

申请日：2017-12-18

Applicant: KYOCERA CORPORATION

Inventor： Noriyoshi Fukuta ,  Kugo Morita ,  Chiharu Yamazaki

IPC: H04W76/14 ,  H04L29/06 ,  H04W28/18 ,  H04W72/04 ,  H04W92/18 ,  H04W76/25 ,  H04W76/38

Abstract: A communication control method, radio terminal and processor thereof include transmitting, by a base station, information on a priority to be used to establish a bearer for direct communication between terminals, receiving, by the radio terminal, the information on the priority from the base station, and establishing, by the radio terminal, a plurality of bearers in accordance with a priority of each of a plurality of pieces of data to be transmitted by the direct communication, on a basis of the information on the priority.

公开(公告)号：US10172054B2

公开(公告)日：2019-01-01

申请号：US15125353

申请日：2015-03-20

Applicant: KYOCERA CORPORATION

Inventor： Hiroyuki Urabayashi ,  Noriyoshi Fukuta ,  Kugo Morita ,  Naohisa Matsumoto

IPC: H04W4/06 ,  H04W48/10 ,  H04W84/02 ,  H04W36/08 ,  H04W36/00 ,  H04W48/16 ,  H04L5/00 ,  H04L12/18

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：US10129923B2

公开(公告)日：2018-11-13

申请号：US15886403

申请日：2018-02-01

Applicant: KYOCERA CORPORATION

Inventor： Noriyoshi Fukuta ,  Kugo Morita ,  Masato Fujishiro

IPC: H04W52/04 ,  H04W72/04 ,  H04W76/27 ,  H04W52/38 ,  H04W92/18 ,  H04W8/00 ,  H04W48/10 ,  H04W76/14 ,  H04W76/10 ,  H04W52/36 ,  H04W88/06 ,  H04W88/10

Abstract: A user terminal and processor for controlling a user terminal having the function of device-to-device (D2D) discovery. In an aspect, a user terminal determines whether a user terminal 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, and transmits a discovery signal to other user terminal by the D2D discovery based on the SIB. The SIB includes resource information indicating usable radio resources for transmitting the discovery signal and power information for controlling transmission power used in transmitting the discovery signal. In another aspect, the terminal stores preconfigured resource and power information used to control D2D discovery, determines whether the terminal is in out of coverage by not detecting at least one cell meeting a criterion, and determines to use the stored resource and power information in response to an out of coverage determination.

公开(公告)号：US10004100B2

公开(公告)日：2018-06-19

申请号：US14901371

申请日：2014-06-13

Applicant: KYOCERA CORPORATION

Inventor： Noriyoshi Fukuta ,  Kugo Morita ,  Chiharu Yamazaki

IPC: H04W4/00 ,  H04W76/06 ,  H04W76/04 ,  H04W4/02 ,  H04W92/18

CPC classification number: H04W76/38 ,  H04W76/23 ,  H04W92/18

Abstract: A UE 100-1 and a UE 200-2 perform D2D communication that is direct device to device communication. The UE 100-1 transmits a D2D termination preliminary notification indicating that termination of the D2D communication is wished to the UE 100-2 during the D2D communication. The UE 100-1 terminates the D2D communication after transmitting the D2D termination preliminary notification.

公开(公告)号：US09998902B2

公开(公告)日：2018-06-12

申请号：US14758919

申请日：2013-12-24

Applicant: KYOCERA CORPORATION

Inventor： Noriyoshi Fukuta

IPC: H04W8/00 ,  H04W72/04 ,  H04W52/28 ,  H04W88/10 ,  H04W88/06

CPC classification number: H04W8/005 ,  H04W52/283 ,  H04W72/048 ,  H04W88/06 ,  H04W88/10

Abstract: A mobile communication system that comprises: a base station that manages a cell; a user terminal connectable to the cell; and another user terminal that can communicate, via the base station, with the user terminal, and that supports D2D communication that is direct device-to-device communication, wherein the user terminal starts transmitting a discovery-use signal for the D2D communication when it is determined that the user terminal and the other user terminal exist in the vicinity while the user terminal communicates with the other user terminal connected to a neighbor cell adjacent to the cell.

公开(公告)号：US09942789B2

公开(公告)日：2018-04-10

申请号：US15251555

申请日：2016-08-30

Applicant: KYOCERA CORPORATION

Inventor： Noriyoshi Fukuta ,  Henry Chang

IPC: H04W24/10 ,  H04W4/06

CPC classification number: H04W24/10 ,  H04W4/06

Abstract: A mobile station is configured with a logged MBSFN measurement in which a reception status of an MBMS is measured and collected by a logged MDT. The mobile station transmits an availability indicator to a network at a predetermined timing except when the logged MBSFN measurement is still ongoing, the availability indicator indicating an availability of the logged MBSFN measurement.

公开(公告)号：US09913312B2

公开(公告)日：2018-03-06

申请号：US15673949

申请日：2017-08-10

Applicant: KYOCERA CORPORATION

Inventor： Noriyoshi Fukuta ,  Kugo Morita ,  Masato Fujishiro

IPC: H04W76/02 ,  H04W72/04 ,  H04W52/04 ,  H04W8/00 ,  H04W92/18 ,  H04W52/38 ,  H04W48/10 ,  H04W88/10 ,  H04W88/06 ,  H04W52/36

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, apparatus therefor, and method performed at a user terminal perform device-to-device (D2D) communication that is direct inter-terminal communication. The terminal stores preconfigured resource information and power information used to control the D2D communication, determines whether the user terminal is in out of coverage by not detecting at least one cell meeting a criterion based on a received power of radio signal, and determines to use the resource information and the power information stored in the storage in response to an out of coverage determination. The user terminal transmits data to other user terminal by the D2D communication based on both the resource information and the power information while the user terminal exists in the out of coverage.