公开(公告)号：US20170238320A1

公开(公告)日：2017-08-17

申请号：US15582986

申请日：2017-05-01

Applicant: KYOCERA CORPORATION

Inventor： Noriyoshi FUKUTA ,  Naohisa MATSUMOTO ,  Hiroyuki URABAYASHI ,  Henry CHANG

IPC: H04W72/04 ,  H04W72/08 ,  H04L5/00

CPC classification number: H04W72/0453 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/006 ,  H04W16/14 ,  H04W72/04 ,  H04W72/082

Abstract: A radio base station according to an embodiment is a radio base station configured to use a specific frequency band which includes a plurality of component carriers having a predetermined bandwidth and which is allowed to be utilized by a plurality of network operators or a plurality of communication systems. The radio base station comprises: a controller configured to select, from among the plurality of component carriers, a target component carrier in which a reference signal used in the specific frequency band should be transmitted; and a transmitter configured to use the target component carrier to transmit the reference signal. The controller selects, as the target component carrier, a first component carrier that satisfies a first condition. The first condition is that an interference power amount falls below a predetermined threshold value.

公开(公告)号：US20170231024A1

公开(公告)日：2017-08-10

申请号：US15502061

申请日：2015-08-06

Applicant: KYOCERA CORPORATION

Inventor： Naohisa MATSUMOTO ,  Kugo MORITA ,  Hiroyuki ADACHI

IPC: H04W76/02 ,  H04W48/08 ,  H04W72/04 ,  H04W8/24 ,  H04W56/00

CPC classification number: H04W76/14 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0044 ,  H04L5/0069 ,  H04L5/0091 ,  H04W8/005 ,  H04W8/24 ,  H04W48/08 ,  H04W56/002 ,  H04W72/0406 ,  H04W88/04

Abstract: A communication control method according to the present invention is used in a mobile communication system that supports D2D communication that is direct Device-to-Device communication. The communication control method comprises a step of transmitting, by a first user terminal in a cell coverage, to another user terminal, identification information for identifying that the first user terminal is located in a cell.

公开(公告)号：US20170164396A1

公开(公告)日：2017-06-08

申请号：US15125389

申请日：2015-03-18

Applicant: KYOCERA CORPORATION

Inventor： Naohisa MATSUMOTO ,  Kugo MORITA ,  Hiroyuki ADACHI

IPC: H04W72/12 ,  H04L1/00 ,  H04L1/18 ,  H04W76/02

CPC classification number: H04W72/1278 ,  H04L1/0015 ,  H04L1/1887 ,  H04L5/0044 ,  H04L5/0094 ,  H04L5/0096 ,  H04W72/02 ,  H04W76/14 ,  H04W92/18

Abstract: In the communication control method according to the present embodiment, a user terminal transmits a scheduling assignment indicating the location of a radio resource used in a reception of communication data by direct device-to-device communication. The user terminal transmits the communication data including initial transmission data and retransmission data by using the radio resource. The retransmission data is transmitted depending on the number of times of re-transmissions associated with a predetermined scheduling assignment by using a predetermined radio resource of which the location is indicated by the predetermined scheduling assignment.

公开(公告)号：US20190124641A1

公开(公告)日：2019-04-25

申请号：US16224680

申请日：2018-12-18

Applicant: KYOCERA Corporation

Inventor： Naohisa MATSUMOTO ,  Kugo MORITA

IPC: H04W72/04 ,  H04W76/14

Abstract: A method for performing D2D (Device-to-Device) communication, a user terminal for supporting D2D communication, and an apparatus used in a user terminal supporting D2D communication include a user terminal in coverage of a base station broadcasting first control information using a first time radio resource, and a second user terminal being out of coverage of the base station receiving the first control information, selecting, by the second user terminal, a second time radio resource different from the first time radio resource, for transmitting second control information, and transmitting, by the second user terminal, the second control information using the second time radio resource. The second control information is determined based on the first control information, and indicates a frequency band to be used for the D2D communication. The second user terminal performs D2D communication on the basis of the first control information received from the first user terminal.

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：US20180020375A1

公开(公告)日：2018-01-18

申请号：US15706509

申请日：2017-09-15

Applicant: KYOCERA CORPORATION

Inventor： Naohisa MATSUMOTO ,  Takahiro SAIWAI ,  Kugo MORITA

IPC: H04W28/06 ,  H04W72/08 ,  H04W84/12 ,  H04W72/12 ,  H04W88/12 ,  H04W88/02

Abstract: A user terminal according to first to third embodiments is used in a mobile communication system defined to observe a use state of an unlicensed band channel within an observation period before transmitting an uplink signal within an uplink transmission period in the channel. The user terminal includes a controller configured to perform transmission restriction to restrict transmission of the uplink signal during a last fixed section or a first fixed section of the uplink transmission period when transmitting the uplink signal within the uplink transmission period in the channel.

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：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：US20170079084A1

公开(公告)日：2017-03-16

申请号：US15308957

申请日：2015-05-08

Applicant: KYOCERA CORPORATION

Inventor： Naohisa MATSUMOTO

IPC: H04W76/02 ,  H04W8/00 ,  H04W72/12 ,  H04W72/04

CPC classification number: H04W76/14 ,  H04L5/0037 ,  H04W8/005 ,  H04W72/02 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/1205 ,  H04W72/1278 ,  H04W92/18

Abstract: A user terminal according to present embodiment comprises a transmitter configured to transmit scheduling assignment information indicating a time-frequency location of a D2D data resource by which user data in D2D communication that is direct Device to Device communication is transmitted. The frequency location of the D2D data resource is determined on the basis of a persistent table where the frequency location of the D2D data resource and the frequency location of the scheduling assignment information are made to correspond to each other. The time location of the D2D data resource is determined on the basis of an identifier included in the scheduling assignment information.

Abstract translation: 根据本实施例的用户终端包括发送器，被配置为发送指示D2D数据资源的时间 - 频率位置的调度分配信息，通过该D2D数据资源的D2D通信中的用户数据被直接发送到设备到设备通信。 D2D数据资源的频率位置是基于D2D数据资源的频率位置和调度分配信息的频率位置彼此对应的持久表来确定的。 基于包括在调度分配信息中的标识符来确定D2D数据资源的时间位置。