公开(公告)号：US20200374768A1

公开(公告)日：2020-11-26

申请号：US16991799

申请日：2020-08-12

Applicant: KYOCERA Corporation

Inventor： Hiroyuki ADACHI

IPC: H04W36/00 ,  H04W72/04 ,  H04W72/02 ,  H04W56/00 ,  H04W36/08 ,  H04W36/38

Abstract: A user equipment and method of a user equipment transmit, to a first cell, information requesting radio resource for V2X sidelink communication, and receive from the first cell, a message for a handover from the first cell to a second cell. The message includes information indicating a resource pool used for transmitting the V2X sidelink communication during performing the handover, and synchronization information indicating synchronization configuration used for transmitting synchronization in the V2X sidelink communication during performing the handover. A base station receives the information requesting radio resource for V2X sidelink communication and transmits to the user equipment, a message for a handover from a first cell to a second cell. The message transmitted by the base station includes information indicating a resource pool used for transmitting the V2X sidelink communication, and synchronization information indicating synchronization configuration used for transmitting synchronization in the V2X sidelink communication.

公开(公告)号：US20200037136A1

公开(公告)日：2020-01-30

申请号：US16592484

申请日：2019-10-03

Applicant: KYOCERA CORPORATION

Inventor： Hiroyuki ADACHI ,  Kugo MORITA

IPC: H04W4/70 ,  H04W8/00 ,  H04W8/06 ,  H04W92/18 ,  H04W76/14 ,  H04W72/02 ,  H04W88/04

Abstract: In a first user equipment, apparatus and method, a first user equipment performs sidelink communication with a second user equipment, receives a first message from the second user equipment, where the first message is periodically transmitted from the second user equipment based on a first timer, starts or restarts a second timer upon receiving the first message, where a value of the second timer is determined based on a value of the first timer, and transmits a second message to a network apparatus upon expiration of the second timer, where the second message indicates that the second user equipment is disconnected from the first user equipment.

公开(公告)号：US20190261450A1

公开(公告)日：2019-08-22

申请号：US16345745

申请日：2017-11-01

Applicant: KYOCERA Corporation

Inventor： Hiroyuki ADACHI ,  Masato FUJISHIRO

IPC: H04W80/02 ,  H04W92/18 ,  H04W80/08 ,  H04W76/11 ,  H04W88/04

Abstract: A communication method according to one embodiment is a communication method in which a first radio terminal executes a layer 2 relay in which a packet of a second radio terminal is transmitted between the second radio terminal and a base station in a layer higher than a Radio Link Control (RLC) layer in Layer 2. The first radio terminal transmits information indicating that the first radio terminal is capable of executing the layer 2 relay. The second radio terminal transmits a request for the layer 2 relay to the first radio terminal in response to receiving the information.

公开(公告)号：US20190261140A1

公开(公告)日：2019-08-22

申请号：US16399382

申请日：2019-04-30

Applicant: KYOCERA Corporation

Inventor： Masato FUJISHIRO ,  Hiroyuki ADACHI ,  Henry CHANG

IPC: H04W4/06 ,  H04W80/02 ,  H04W72/00 ,  H04W24/08 ,  H04W76/27 ,  H04W4/80 ,  H04W74/08

Abstract: A user equipment supports MBMS (Multimedia Broadcast Multicast Service) transmission using SC-PTM (Single Cell Point-To-Multipoint). The user equipment receives an MBMS service from a base station via SC-MTCH (Single Cell Multicast Traffic Channel). The user equipment receives, from the base station, MAC (Medium Access Control) CE (Control Element) indicating a suspension of transmission of the MBMS service via the SC-MTCH. The user equipment determines that the transmission of the MBMS service via the SC-MTCH is suspended in response to the reception of the MAC CE.

公开(公告)号：US20190261139A1

公开(公告)日：2019-08-22

申请号：US16399346

申请日：2019-04-30

Applicant: KYOCERA Corporation

Inventor： Masato FUJISHIRO ,  Hiroyuki ADACHI ,  Henry CHANG

IPC: H04W4/06 ,  H04W48/20 ,  H04W84/04 ,  H04W4/12 ,  H04L5/06 ,  H04L12/18 ,  H04L12/931

Abstract: A radio terminal according to one embodiment is a radio terminal for a mobile communication system supporting MBMS. The radio terminal comprises a receiver configured to receive level information from a base station; and a controller configured to perform a process of receiving an MBMS signal from the base station, based on the level information. The MBMS signal is transmitted from the base station using an enhanced coverage function for enhancing a coverage of the base station. The level information is information on an enhanced coverage level corresponding to the MBMS signal.

公开(公告)号：US20190223239A1

公开(公告)日：2019-07-18

申请号：US16364223

申请日：2019-03-26

Applicant: KYOCERA Corporation

Inventor： Hiroyuki ADACHI ,  Kugo MORITA ,  Masato FUJISHIRO ,  Mayumi KOMURA

IPC: H04W76/14

CPC classification number: H04W76/14 ,  H04W64/00 ,  H04W88/04 ,  H04W92/18

Abstract: A radio terminal according to one embodiment is configured to perform a relay between another radio terminal and a network. The radio terminal comprises: a transmitter configured to notify the network of first information indicating that the radio terminal is a relay terminal of the another radio terminal; a controller configured to forward data addressed to the another radio terminal to the another radio terminal via a connection between the another radio terminal through the radio terminal and the network; and a receiver configured to receive from the network a message indicating that the data addressed to the another radio terminal exists when at least part of the connection is released. The controller is configured to start control for establishing the connection in order to forward the data addressed to the another radio terminal in response to receiving the message.

公开(公告)号：US20190223183A1

公开(公告)日：2019-07-18

申请号：US16364252

申请日：2019-03-26

Applicant: KYOCERA Corporation

Inventor： Hiroyuki URABAYASHI ,  Chiharu YAMAZAKI ,  Hiroyuki ADACHI ,  Amit KALHAN

IPC: H04W72/04

CPC classification number: H04W72/0453 ,  H04W72/042 ,  H04W72/048 ,  H04W92/10

Abstract: A mobile communication method for performing predetermined communication between a base station and a user terminal by using a narrow band including 6 resource blocks comprises: transmitting, from the base station to the user terminal, narrow band allocation information allocating a predetermined number of the narrow bands to the user terminal as allocation information of the narrow band used for the predetermined communication; performing by the user terminal, the predetermined communication by using the predetermined number of narrow bands based on the narrow band allocation information; transmitting, from the base station to the user terminal, an RRC message including information specifying a bandwidth supportable by the user terminal; and changing, by the base station, a number of bits of the narrow band allocation information according to the bandwidth supportable by the user terminal. The predetermined number of narrow bands are provided within a bandwidth supportable by the user terminal.

公开(公告)号：US20190174503A1

公开(公告)日：2019-06-06

申请号：US16272207

申请日：2019-02-11

Applicant: KYOCERA CORPORATION

Inventor： Hiroyuki ADACHI ,  Masato FUJISHIRO ,  Mayumi KOMURA ,  Kugo MORITA ,  Henry CHANG

IPC: H04W72/04 ,  H04W72/12 ,  H04W64/00 ,  H04W4/021

Abstract: A communication device according to one embodiment includes a controller and a transmitter. The controller is configured to identify a zone that is a geographical section where the communication device is located, and select a predetermined transmission resource region from a plurality of transmission resource regions included in one transmission resource pool associated with the identified zone. The transmitter is configured to transmit a direct radio signal to another communication device by using a resource in the predetermined transmission resource region.

公开(公告)号：US20190104450A1

公开(公告)日：2019-04-04

申请号：US16189555

申请日：2018-11-13

Applicant: KYOCERA CORPORATION

Inventor： Hiroyuki ADACHI

IPC: H04W36/00 ,  H04W36/08 ,  H04W36/38

Abstract: A base station according to one embodiment comprises: a controller configured to manage a first cell; and a transmitter configured to transmit to a radio terminal a message for a handover from the first cell to a second cell. The message includes information of a resource pool used for a proximity-based service in the second cell, and synchronization setting information for transmitting or receiving a synchronization signal in the proximity-based service in the second cell.

公开(公告)号：US20190098697A1

公开(公告)日：2019-03-28

申请号：US16185413

申请日：2018-11-09

Applicant: KYOCERA CORPORATION

Inventor： Masato FUJISHIRO ,  Chiharu YAMAZAKI ,  Hiroyuki ADACHI ,  Henry CHANG

IPC: H04W88/04 ,  H04W76/11 ,  H04W76/14 ,  H04W8/00 ,  H04W92/18 ,  H04W76/27

Abstract: A radio terminal (controller) executes one of a first control, a second control, and a third control, based on at least one of a reception level of a radio signal from a predetermined cell and a transmission level of the radio terminal. In the first control, the radio terminal directly transmits uplink information to be transmitted to a predetermined cell to the predetermined cell, and directly receives downlink information to be received by the radio terminal from the predetermined cell. In the second control, the radio terminal transmits the uplink information to the predetermined cell via a relay terminal configured to execute a relay using a proximity-based service, and directly receives the downlink information from the predetermined cell. In the third control, the radio terminal transmits the uplink information to the predetermined cell via the relay terminal, and receives the downlink information from the predetermined cell via the relay terminal.