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公开(公告)号：US12063688B2
公开(公告)日：2024-08-13
申请号：US16337563
申请日：2017-09-29
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Kazuki Takeda , Hiroki Harada , Satoshi Nagata
IPC: H04W74/0833 , H04B7/06 , H04W72/04 , H04W72/044 , H04B7/0413
CPC classification number: H04W74/0833 , H04B7/0617 , H04W72/046 , H04B7/0413
Abstract: To properly receive a preamble and/or a message in a random access procedure in communication using beam forming, and perform random access with efficiency, a user terminal of the present invention is a user terminal for communicating with a radio base station using a plurality of types of beam forming, and is characterized by having a receiving section that receives a DL signal transmitted from the radio base station, a transmitting section that transmits a random access preamble (PRACH), and a control section that controls to transmit the PRACH including beam information on a beam of the radio base station.
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公开(公告)号：US12063130B2
公开(公告)日：2024-08-13
申请号：US18319232
申请日：2023-05-17
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Satoshi Nagata , Shaozhen Guo , Jing Wang , Xin Wang , Xiaolin Hou
CPC classification number: H04L25/03834 , H04L25/03159 , H04L25/03343 , H04L27/26025
Abstract: A terminal includes a transmitting and receiving unit and a control unit. The transmitting and receiving unit transmits and receives a slot including a plurality of symbols. The control unit determines number of symbols included in a sub-frame on the basis of a time length of the symbol. The control unit determines the number of symbols included in the sub-frame according to a degree of modulation at which the time length of the symbol varies.
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公开(公告)号：US20240267902A1
公开(公告)日：2024-08-08
申请号：US18565845
申请日：2021-06-03
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Shinya Kumagai , Satoshi Nagata , Jing Wang
IPC: H04W72/0457 , H04L5/14 , H04W72/231 , H04W76/20
CPC classification number: H04W72/0457 , H04L5/1469 , H04W72/231 , H04W76/20
Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives a Radio Resource Control (RRC) information element related to a bandwidth part (BWP) configuration in a duplex method of performing frequency division multiplexing on an uplink (UL) resource and a downlink (DL) resource in one component carrier in a time division duplex (TDD) band; and a control section that controls at least one of configuration, application, activation, and switching of a UL BWP, based on the RRC information element. According to one aspect of the present disclosure, it is possible to increase resource usage efficiency.
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公开(公告)号：US20240259880A1
公开(公告)日：2024-08-01
申请号：US18564437
申请日：2021-05-31
Applicant: NTT DOCOMO, INC.
Inventor： Haruhi Echigo , Yuki Matsumura , Naoya Shibaike , Hiroki Harada , Satoshi Nagata
IPC: H04W28/18 , H04W72/232
CPC classification number: H04W28/18 , H04W72/232
Abstract: A terminal according to one aspect of the present disclosure includes: a control section that performs control to apply different modulation and coding schemes (MCSs) to a plurality of layers; and a transmitting section that applies the different MCSs to transmit uplink shared channels of the plurality of layers. According to one aspect of the present disclosure, it is possible to appropriately perform power/MCS control per layer/port.
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公开(公告)号：US20240244667A1
公开(公告)日：2024-07-18
申请号：US18558866
申请日：2021-05-10
Applicant: NTT DOCOMO, INC.
Inventor： Haruhi Echigo , Daisuke Kurita , Hiroki Harada
IPC: H04W74/0833 , H04L5/00 , H04W74/08 , H04W76/20
CPC classification number: H04W74/0833 , H04L5/0051 , H04W74/0866 , H04W76/20
Abstract: A terminal repeatedly transmits a message in a random access channel procedure, and configures a random access resource according to whether the repeated transmission is present, based on configuration of a radio resource control layer.
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Patent Agency Ranking
公开(公告)号：US12022492B2
公开(公告)日：2024-06-25
申请号：US16609437
申请日：2017-05-02
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Kazuki Takeda , Satoshi Nagata , Hiroki Harada
CPC classification number: H04W72/51 , H04L5/005 , H04W56/001 , H04W74/0833 , H04W74/0891
Abstract: The present invention is designed so that frequency bands can be used efficiently depending on what capabilities UEs have. According to one aspect of the present invention, a user terminal includes a receiving section that receives a synchronization signal block transmitted in part of frequency bands in a specific frequency band and a control section that, after random access procedures based on the synchronization signal block, controls transmission and/or receipt in a plurality of frequency bands in the specific frequency band based on a plurality of specific signals transmitted respectively in the plurality of frequency bands.
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公开(公告)号：US20240187984A1
公开(公告)日：2024-06-06
申请号：US18285348
申请日：2021-04-02
Applicant: NTT DOCOMO, INC.
Inventor： Tomoya Ohara , Masaya Okamura , Hiroki Harada , Daisuke Kurita , Mayuko Okano
CPC classification number: H04W52/0212 , H04L5/0055 , H04W74/006
Abstract: A terminal according to one aspect of the present disclosure includes a control section that controls, in either state of an idle state or an inactive state, operation for at least one of reception of downlink data and transmission of uplink data, and a transmitting/receiving section that performs the operation without transmitting, before the operation, a random access preamble in the state. According to one aspect of the present disclosure, it is possible to reduce power consumption/latency.
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公开(公告)号：US20240187179A1
公开(公告)日：2024-06-06
申请号：US18285106
申请日：2021-03-31
Applicant: NTT DOCOMO, INC.
Inventor： Daisuke Kurita , Shinya Kumagai , Hiroki Harada , Satoshi Nagata , Tomoya Ohara , Takuma Nakamura
CPC classification number: H04L5/0051 , H04L5/1469
Abstract: A terminal according to one aspect of the present disclosure includes: a receiving section that receives information related to a time window over a plurality of slots; and a control section that controls transmission of a plurality of demodulation reference signals in the plurality of slots. Amplitudes and phases of the plurality of demodulation reference signals have continuity. The time window includes a first time resource being not for uplink. According to one aspect of the present disclosure, channel estimation accuracy can be improved.
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公开(公告)号：US20240187161A1
公开(公告)日：2024-06-06
申请号：US18285153
申请日：2021-03-31
Applicant: NTT DOCOMO, INC.
Inventor： Daisuke Kurita , Hiroki Harada , Mayuko Okano , Satoshi Nagata , Tomoya Ohara , Masaya Okamura
IPC: H04L5/00 , H04W72/0453 , H04W72/1273 , H04W74/0833
CPC classification number: H04L5/0048 , H04W72/0453 , H04W72/1273 , H04W74/0833
Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives a downlink signal with at least a part of parameters of the downlink signal being limited, in an initial access procedure; and a control section that controls transmission of an uplink signal with at least a part of parameters of the uplink signal being limited, in the initial access procedure. According to an aspect of the present disclosure, the payload size for configuration of the initial access can be reduced.
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公开(公告)号：US20240179707A1
公开(公告)日：2024-05-30
申请号：US18283691
申请日：2021-03-31
Applicant: NTT DOCOMO, INC.
Inventor： Daisuke Kurita , Hiroki Harada , Mayuko Okano , Satoshi Nagata , Tomoya Ohara , Masaya Okamura
IPC: H04W72/1273 , H04W72/232 , H04W74/0833
CPC classification number: H04W72/1273 , H04W72/232 , H04W74/0833
Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives, without receiving at least one of a broadcast channel (PBCH), a physical downlink control channel (PDCCH), and a physical downlink shared channel carrying system information (RMSI PDSCH), another channel or signal in an initial access procedure; and a control section that performs control in the initial access procedure on a basis of the other channel or signal. According to an aspect of the present disclosure, the payload size for configuration of the initial access can be reduced.
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