公开(公告)号：US20230076328A1

公开(公告)日：2023-03-09

申请号：US17759576

申请日：2020-02-13

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Shohei Yoshioka ,  Shinya Kumagai ,  Satoshi Nagata

IPC: H04W72/04 ,  H04L1/18 ,  H04L5/00

Abstract: A terminal includes a receiver that receives configuration information transmitted from a base station in a high frequency band higher than or equal to a frequency band of a Frequency Range 2 (FR2) in a frequency range a New Radio (NR) system formed of a Frequency Range 1 (FR1), which is a low frequency range, and the FR2, which is a high frequency range; and a controller that modifies, based on the configuration information, an interpretation of at least one of a counter DAI and a total DAI in a Downlink Assignment Indicator (DAI) included in control information to be received from the base station.

公开(公告)号：US20230072350A1

公开(公告)日：2023-03-09

申请号：US17799510

申请日：2020-02-13

Applicant: NTT DOCOMO, INC.

Inventor： Daisuke Kurita ,  Hiroki Harada ,  Weiqi Sun ,  Jing Wang ,  Xiaolin Hou

IPC: H04W52/14

Abstract: A radio communication node is disclosed including a transmitting/receiving unit that transmits/receives a radio signal to/from an upper node forming an integrated access backhaul; and a control unit that reports, to the upper node, power control information used for transmission power control of a downlink in the upper node.

公开(公告)号：US20230049707A1

公开(公告)日：2023-02-16

申请号：US17759079

申请日：2020-02-13

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Shinya Kumagai ,  Satoshi Nagata

IPC: H04W74/08

Abstract: A terminal includes a control unit configured to perform LBT (Listen before talk) in a frequency band above a predetermined frequency, and a transmission unit configured to transmit a signal based on a result of the LBT, wherein the control unit performs the LBT with a mechanism different from LBT performed in a frequency band below the predetermined frequency.

公开(公告)号：US20230044495A1

公开(公告)日：2023-02-09

申请号：US17791118

申请日：2020-01-10

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Satoshi Nagata ,  Lihui Wang ,  Xiaolin Hou

IPC: H04W72/12

Abstract: A terminal includes: a receiving unit of receiving first information for configuring scheduling and second information for executing scheduling from a base station; and a control unit that identifies a single scheduled carrier or a plurality of scheduled carriers, based on the first information and the single second information.

公开(公告)号：US11575487B2

公开(公告)日：2023-02-07

申请号：US15752935

申请日：2016-08-12

Applicant: NTT DOCOMO, INC.

Inventor： Kazuki Takeda ,  Hiroki Harada ,  Satoshi Nagata

IPC: H04L5/00 ,  H04W28/04 ,  H04W72/04 ,  H04W72/12 ,  H04L1/18 ,  H04L1/16

Abstract: This invention aims to appropriately transmit HARQ-ACK in future wireless communication systems. A user equipment includes a reception unit which receives a DL signal, and a control unit which controls transmission of a delivery acknowledgement signal for the DL signal, wherein the reception unit receives information concerning an instruction to transmit the delivery acknowledgement signal and the control unit controls transmission of the delivery acknowledgement signal on the basis of the information concerning the instruction to transmit the delivery acknowledgement signal. The reception unit of the user equipment further receives downlink control information including the information concerning the instruction to transmit the delivery acknowledgement signal.

公开(公告)号：US20220408489A1

公开(公告)日：2022-12-22

申请号：US17759144

申请日：2020-01-31

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Tomoya Ohara ,  Satoshi Nagata ,  Jing Wang

IPC: H04W74/08 ,  H04W16/14 ,  H04L5/00

Abstract: A terminal including a reception unit that receives configuration information in a high frequency band higher than or equal to a frequency band of a frequency range 2 (FR2), the FR2 being in a range including a frequency range 1 (FR1) that is a low frequency band and the FR2 that is a high frequency band in a new radio (NR) system; and a control unit that configures at least one of a format of a random access preamble, a sequence of the random access preamble, a subcarrier spacing applied to a channel on which the random access preamble is to be transmitted, or a subcarrier spacing applied to an uplink shared channel, based on the configuration information.

公开(公告)号：US11523295B2

公开(公告)日：2022-12-06

申请号：US16763095

申请日：2017-11-16

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Yousuke Sano ,  Takuma Takada

IPC: H04W24/10 ,  H04W28/08 ,  H04W36/00 ,  H04W56/00 ,  H04W72/04 ,  H04W76/15 ,  H04W84/02 ,  H04W88/06 ,  H04W88/10 ,  H04W92/02 ,  H04W92/10

Abstract: A user apparatus communicates with a first base station apparatus and a second base station apparatus, and the user apparatus includes a receiving unit configured to receive, from the first base station apparatus, a configuration for measuring a timing difference between the first base station apparatus and the second base station apparatus; a control unit configured to execute measurement with respect to the second base station apparatus, based on the configuration for measuring the timing difference; and a transmitting unit configured to transmit a result of the executed measurement, to the first base station apparatus, wherein the executed measurement is executed before starting to communicate with the second base station apparatus.

公开(公告)号：US20220376878A1

公开(公告)日：2022-11-24

申请号：US17755125

申请日：2019-10-25

Applicant: NTT DOCOMO, INC.

Inventor： Daisuke Kurita ,  Hiroki Harada ,  Tomoya Ohara ,  Satoshi Nagata

IPC: H04L5/00 ,  H04L27/26 ,  H04W74/08

Abstract: In a case of using a different frequency band that is different from a frequency band including one or a plurality of frequency ranges, a terminal applies initial access configurations including a format of an initial access signal, the format being different from that for the frequency band. The terminal transmits the initial access signal via an initial access channel set based on the applied initial access configurations.

公开(公告)号：US20220368480A1

公开(公告)日：2022-11-17

申请号：US17755128

申请日：2019-10-25

Applicant: NTT DOCOMO, INC.

Inventor： Daisuke Kurita ,  Hiroki Harada ,  Tomoya Ohara ,  Satoshi Nagata

IPC: H04L5/00 ,  H04W72/04

Abstract: In a case of using a different frequency band that is different from a frequency band including one or a plurality of frequency ranges, a terminal sets a duration of an initial access channel to which a gap in a time direction is added. The terminal transmits an initial access signal via the set initial access channel.

公开(公告)号：US20220321299A1

公开(公告)日：2022-10-06

申请号：US17597142

申请日：2019-06-26

Applicant: NTT DOCOMO, INC.

Inventor： Hiroki Harada ,  Satoshi Nagata ,  Yuki Matsumura ,  Shohei Yoshioka ,  Hideyuki Moroga ,  Lihui Wang

IPC: H04L5/00

Abstract: When using a different frequency band such as FR4, which is different from a frequency band including FR1 and FR2, the terminal uses a phase tracking reference signal (PTRS) having a different density in at least one of a time direction and a frequency direction to perform transmission or reception of a signal using the PTRS.