公开(公告)号：US11057952B2

公开(公告)日：2021-07-06

申请号：US16364223

申请日：2019-03-26

Applicant: KYOCERA Corporation

Inventor： Hiroyuki Adachi ,  Kugo Morita ,  Masato Fujishiro ,  Mayumi Komura

IPC: H04L1/00 ,  H04W76/14 ,  H04W92/18 ,  H04W88/04 ,  H04W64/00 ,  H04W76/34

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：US10917890B2

公开(公告)日：2021-02-09

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: H04L12/28 ,  H04W72/04 ,  H04W92/18 ,  H04W4/021 ,  H04W64/00 ,  H04W72/12 ,  H04W72/02

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：US10721714B2

公开(公告)日：2020-07-21

申请号：US16357535

申请日：2019-03-19

Applicant: KYOCERA Corporation

Inventor： Masato Fujishiro ,  Kugo Morita ,  Henry Chang

IPC: H04W8/08 ,  H04W68/06 ,  H04W76/27 ,  H04W76/28 ,  H04W68/02 ,  H04W68/00 ,  H04W48/18 ,  H04W52/02 ,  H04W88/04

Abstract: A base station according to an embodiment is a base station included in a RAN of a mobile communication system. The base station includes a receiver configured to receive, from a radio terminal in a specific state, a message indicating that the radio terminal has left a RAN paging area, and a transmitter configured to transmit, to a mobility management entity, paging area information related to update of the RAN paging area in response to the reception of the message. The specific state is a state in which an anchor base station in the RAN paging area maintains an S1 connection for the radio terminal and the RAN paging area is configured to the radio terminal.

公开(公告)号：US10602566B2

公开(公告)日：2020-03-24

申请号：US16183084

申请日：2018-11-07

Applicant: KYOCERA CORPORATION

Inventor： Noriyoshi Fukuta ,  Kugo Morita ,  Masato Fujishiro

IPC: H04W52/04 ,  H04W72/04 ,  H04W76/27 ,  H04W52/38 ,  H04W92/18 ,  H04W76/14 ,  H04W48/12 ,  H04W8/00 ,  H04W48/10 ,  H04W76/10 ,  H04W52/36 ,  H04W88/06 ,  H04W88/10

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：US10440764B2

公开(公告)日：2019-10-08

申请号：US15818067

申请日：2017-11-20

Applicant: KYOCERA CORPORATION

Inventor： Kugo Morita

IPC: H04W76/14 ,  H04W8/00 ,  H04W72/12 ,  H04W76/11 ,  H04W92/18

Abstract: A communication method, user terminal, processor, and base station for direct communication including a user terminal transmitting to a base station, buffer status information indicating amounts of data to be transmitted in direct communication, where each amount of data is for each of logical channel groups for the direct communication and for each communication partner of the direct communication, assigning, by the base station to the user terminal, a radio network temporary identifier for the direct communication, determining, by the base station, a radio resource to be used for the user terminal to perform the direct communication, transmitting, from the base station to the user terminal, resource information indicating the determined radio resource, by use of the radio network temporary identifier assigned to the user terminal, and receiving, by the user terminal, the resource information on a basis of the radio network temporary identifier assigned to the user terminal.

公开(公告)号：US10425881B2

公开(公告)日：2019-09-24

申请号：US15439426

申请日：2017-02-22

Applicant: KYOCERA CORPORATION

Inventor： Masato Fujishiro ,  Chiharu Yamazaki ,  Noriyoshi Fukuta ,  Kugo Morita

IPC: H04W4/00 ,  H04W48/08 ,  H04W48/16 ,  H04W72/04 ,  H04W72/02 ,  H04W48/12 ,  H04W76/14 ,  H04W8/00 ,  H04W88/04

Abstract: A user terminal according to an embodiment includes a receiver that receives a list transmitted from a base station, the list including discovery resource configurations; and a controller that selects a discovery resource configuration from among the discovery resource configurations, and uses the selected discovery resource configuration to directly transmit a discovery signal to other user terminals. Each of the discovery resource configurations includes: time resource information indicating time resources used for transmitting a discovery signal and including a variable number substituted into a mathematical expression; frequency resource information indicating frequency resources used for transmitting the discovery signal and including a range of continuous resource block numbers; and power information indicating transmission power used for transmitting the discovery signal.

公开(公告)号：US10390358B2

公开(公告)日：2019-08-20

申请号：US14899773

申请日：2014-06-18

Applicant: KYOCERA CORPORATION

Inventor： Takahiro Saiwai ,  Noriyoshi Fukuta ,  Masato Fujishiro ,  Chiharu Yamazaki ,  Kugo Morita

IPC: H04W4/70 ,  H04W72/04 ,  H04W72/12 ,  H04W76/14 ,  H04W92/18

Abstract: When a UE 100-2 (a reception-side UE) that performs D2D communication by using UL radio resource switches communication modes between cellular communication and the D2D communication, if DL subframe in which data reception of the cellular communication should be performed and the UL subframe in which data reception of the D2D communication should be performed at least partially overlap on a time axis, then the UE 100-2 performs data reception in one subframe, out of the overlapping two subframes.

公开(公告)号：US10285212B2

公开(公告)日：2019-05-07

申请号：US15127144

申请日：2015-03-20

Applicant: KYOCERA CORPORATION

Inventor： Masato Fujishiro ,  Kugo Morita ,  Chiharu Yamazaki ,  Yushi Nagasaka ,  Henry Chang

IPC: H04W76/15 ,  H04W36/08 ,  H04L5/00 ,  H04W72/12 ,  H04W16/24 ,  H04W88/06

Abstract: A master base station according to embodiment divides a bearer of a mobile station into two split bearers in a dual connectivity scheme. One split bearer is provided between the master base station and the mobile station without intervention of a secondary base station. Another split bearer is provided between the master base station and the mobile station with the intervention of a secondary base station. The master base station comprises a transmitter configured to transmit to the mobile station, information indicating whether the mobile station should transmit uplink data to the master station or to the secondary base station.

公开(公告)号：US10271348B2

公开(公告)日：2019-04-23

申请号：US15558990

申请日：2016-03-17

Applicant: KYOCERA CORPORATION

Inventor： Naohisa Matsumoto ,  Kugo Morita ,  Hiroyuki Adachi

IPC: H04L12/24 ,  H04L5/14 ,  H04W84/18 ,  H04L29/06 ,  H04W72/12 ,  H04W84/12 ,  H04L1/18 ,  H04W72/14 ,  H04W56/00

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

公开(公告)号：US10271255B2

公开(公告)日：2019-04-23

申请号：US15467284

申请日：2017-03-23

Applicant: KYOCERA CORPORATION

Inventor： Katsuhiro Mitsui ,  Masato Fujishiro ,  Kugo Morita ,  Yushi Nagasaka

IPC: H04W36/22 ,  H04W28/08 ,  H04W36/14 ,  H04W48/08 ,  H04W48/18 ,  H04W92/20 ,  H04W36/00 ,  H04W84/12 ,  H04W88/08

Abstract: A base station according to a present embodiment includes: a controller configured to set first determination parameters used for a radio terminal to determine whether to switch a standby destination or a connection destination between the mobile communication network and a wireless LAN; a transmitter configured to transmit the first determination parameters to a radio terminal served by the base station; and a receiver configured to receive information notified from another base station. The controller is configured to set the first determination parameters in consideration of the information.