公开(公告)号：US20250088331A1

公开(公告)日：2025-03-13

申请号：US18729807

申请日：2022-01-27

Applicant: NTT DOCOMO, INC.

Inventor： Masaya Okamura ,  Tomoya Ohara ,  Kousuke Shima ,  Hiroki Harada ,  Daisuke Kurita ,  Mayuko Okano

IPC: H04L5/00

Abstract: A terminal includes: a transmission unit configured to transmit, in uplink, a reference signal for positioning; and a control unit configured to assume that resources of the reference signal for positioning are to be non-contiguously allocated.

公开(公告)号：US20240381117A1

公开(公告)日：2024-11-14

申请号：US18692167

申请日：2021-09-27

Applicant: NTT DOCOMO, INC.

Inventor： Shohei Yoshioka ,  Shinya Kumagai ,  Yuki Takahashi ,  Mayuko Okano ,  Masaya Okamura ,  Satoshi Nagata

IPC: H04W16/28 ,  H04W72/0453 ,  H04W84/06

Abstract: A terminal includes: a communication unit configured to perform communication with a base station that is included in an NTN (Non-Terrestrial Network) via a non-terrestrial device and a wireless relay device, based on a configuration related to a specific frequency band; and a control unit configured to switch: a beam; or a configuration related to the specific frequency band, to be applied to a section from the wireless relay device to the terminal itself in a link from the non-terrestrial device to the terminal itself.

公开(公告)号：US20240205981A1

公开(公告)日：2024-06-20

申请号：US18554114

申请日：2021-04-09

Applicant: NTT DOCOMO, INC.

Inventor： Tomoya Ohara ,  Masaya Okamura ,  Hiroki Harada ,  Daisuke Kurita ,  Mayuko Okano

IPC: H04W74/0833 ,  H04W56/00

CPC classification number: H04W74/0833 ,  H04W56/001

Abstract: A terminal according to an aspect of the present disclosure includes: a control section that determines, based on at least one of terminal identification information, a terminal type, terminal capability information, and information notified from a base station, at least one of a transmission occasion and an index that are available for transmission of a random access preamble; and a transmitting section that transmits the random access preamble.

公开(公告)号：US20240188016A1

公开(公告)日：2024-06-06

申请号：US18285339

申请日：2021-04-02

Applicant: NTT DOCOMO, INC.

Inventor： Tomoya Ohara ,  Masaya Okamura ,  Hiroki Harada ,  Daisuke Kurita ,  Mayuko Okano

IPC: H04W56/00 ,  H04W74/0833

CPC classification number: H04W56/0045 ,  H04W74/0833

Abstract: A terminal according to an aspect of the present disclosure includes: a control section that controls one or more random access procedures; a receiving section that acquires, on the basis of the one or more random access procedures, a plurality of information related to a plurality of timing advances, each of the plurality of timing advances corresponding to a respective one of a plurality of base stations or transmission/reception points; and a transmitting section that performs a UL transmission on the basis of at least one of the plurality of information related to the plurality of timing advances.

公开(公告)号：US20240129088A1

公开(公告)日：2024-04-18

申请号：US18278315

申请日：2021-03-05

Applicant: NTT DOCOMO, INC.

Inventor： Shohei Yoshioka ,  Shinya Kumagai ,  Yuki Takahashi ,  Mayuko Okano ,  Masaya Okamura ,  Satoshi Nagata

IPC: H04L5/00 ,  H04W24/10 ,  H04W72/02 ,  H04W72/044

CPC classification number: H04L5/0051 ,  H04W24/10 ,  H04W72/02 ,  H04W72/046

Abstract: A communication apparatus includes a transmitting unit configured to transmit, to another communication apparatus, a signal requesting transmission of SRS (Sounding reference signal) in a resource autonomously selected; a receiving unit configured to receive the SRS from the another communication apparatus; and a control unit configured to perform measurement by using the SRS.

公开(公告)号：US20240098787A1

公开(公告)日：2024-03-21

申请号：US18264336

申请日：2021-02-22

Applicant: NTT DOCOMO, INC.

Inventor： Shinya Kumagai ,  Masaya Okamura ,  Mayuko Okano ,  Yuki Takahashi ,  Shohei Yoshioka ,  Satoshi Nagata

IPC: H04W74/0816 ,  H04W74/04 ,  H04W74/08

CPC classification number: H04W74/0816 ,  H04W74/04 ,  H04W74/0866

Abstract: A transmission node includes: a reception unit configured to execute an LBT (Listen before talk) in a time interval immediately before transmitting a signal; a transmission unit configured to transmit a signal in a case where reception power is less than a threshold value in the time interval; and a control unit configured to, in a case where multiple signals are to be transmitted, change control related to the LBT for a signal to be transmitted for a first time and change control related to the LBT for a signal to be transmitted other than for the first time.

公开(公告)号：US20240049195A1

公开(公告)日：2024-02-08

申请号：US18258668

申请日：2021-01-05

Applicant: NTT DOCOMO, INC.

Inventor： Naoya Shibaike ,  Mayuko Okano ,  Hiroki Harada ,  Jing Wang ,  Qiping PI

IPC: H04W72/0446 ,  H04W72/20 ,  H04W48/08

CPC classification number: H04W72/0446 ,  H04W72/20 ,  H04W48/08

Abstract: A terminal includes: a reception unit configured to receive a block including a synchronization signal and a broadcast channel, a control channel carrying control information, and a shared channel carrying system information by applying single beamforming; and a control unit configured to perform an initial access, based on the system information. The block and one or both of the control channel and the shared channel are frequency-multiplexed, and the control channel and the shared channel are time-multiplexed.

公开(公告)号：US20240040486A1

公开(公告)日：2024-02-01

申请号：US18264309

申请日：2021-03-24

Applicant: NTT DOCOMO, INC.

Inventor： Shinya Kumagai ,  Mayuko Okano ,  Masaya Okamura ,  Yuki Takahashi ,  Shohei Yoshioka ,  Satoshi Nagata

IPC: H04W48/14 ,  H04W64/00

CPC classification number: H04W48/14 ,  H04W64/003

Abstract: A terminal has: a transmitting unit configured to transmit, to a communication device, a requesting signal that requests transmission of a cell search signal; and a receiving unit configured to receive the cell search signal transmitted based on the requesting signal and identify information related to a cell.

公开(公告)号：US20230388806A1

公开(公告)日：2023-11-30

申请号：US18031763

申请日：2020-10-15

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Shinya Kumagai ,  Naoya Shibaike ,  Mayuko Okano

IPC: H04W16/14 ,  H04W56/00 ,  H04W16/28 ,  H04W74/08

CPC classification number: H04W16/14 ,  H04W56/001 ,  H04W16/28 ,  H04W74/0816

Abstract: A channel access procedure is executed in a second frequency band different from the first frequency band. A radio base station executes a channel access procedure using a single directional reception beam, and transmits a single synchronization signal block in a channel occupancy time after the channel access procedure.

公开(公告)号：US20250097917A1

公开(公告)日：2025-03-20

申请号：US18727523

申请日：2022-01-14

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Daisuke Kurita ,  Mayuko Okano ,  Kousuke Shima ,  Masaya Okamura ,  Tomoya Ohara

IPC: H04W72/0453 ,  H04W16/14

Abstract: A terminal according to one aspect of the present disclosure includes a receiving section that receives first configuration information related to use of a frequency to which shared spectrum channel access is applied, and second configuration information for configuring a resource in which frequency division multiplexing of a downlink (DL) resource and an uplink (UL) resource is available, and a control section that controls, based on the first configuration information and the second configuration information, use of the resource in which the frequency division multiplexing is available in the frequency applied with the shared spectrum channel access. According to one aspect of the present disclosure, it is possible to enhance efficiency of resource use.