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公开(公告)号：US12238694B2
公开(公告)日：2025-02-25
申请号：US17429480
申请日：2019-02-22
Applicant: NTT DOCOMO, INC.
Inventor： Hideaki Takahashi , Yousuke Sano
IPC: H04W72/0453
Abstract: A user apparatus includes a reception unit configured to receive information specifying a BWP (Bandwidth part) from a base station apparatus, a control unit configured to configure the BWP by determining a parameter to be applied from a predetermined cell-common parameter and a predetermined user-apparatus-specific parameter that are included in the information specifying the BWP, and a communication unit configured to communicate with the base station apparatus by using the configured BWP, wherein the predetermined parameters are information items indicating a lowest usable subcarrier of the BWP.
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公开(公告)号：US12058623B2
公开(公告)日：2024-08-06
申请号：US17268731
申请日：2018-09-20
Applicant: NTT DOCOMO, INC.
Inventor： Yousuke Sano , Hiromasa Umeda , Hideaki Takahashi
IPC: H04W52/30
CPC classification number: H04W52/30
Abstract: A user equipment includes a transmission unit configured to transmit a signal; and a control unit configured to determine, according to a power class, a maximum transmission power for transmitting the signal. The control unit adjusts, according to an instruction from a base station apparatus, the maximum transmission power. The instruction includes information validating or invalidating adjustment of the maximum transmission power.
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公开(公告)号：US11743901B2
公开(公告)日：2023-08-29
申请号：US16323547
申请日：2017-08-07
Applicant: NTT DOCOMO, INC.
Inventor： Shinpei Yasukawa , Satoshi Nagata , Kazuaki Takeda , Yousuke Sano
CPC classification number: H04W72/23 , H04L5/0044 , H04W24/08 , H04W72/0446 , H04W74/08 , H04W88/02 , H04L5/0048
Abstract: A user equipment in a radio communication system including a base station and the user equipment, the user equipment including: a resource management unit that retains configuration information of a resource capable of transmitting uplink data without receiving uplink data transmission permission from the base station; and a transmission unit that transmits a signal indicating that uplink data transmission using the resource is performed to the base station.
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公开(公告)号：US11503606B2
公开(公告)日：2022-11-15
申请号：US16763051
申请日：2017-11-17
Applicant: NTT DOCOMO, INC.
Inventor： Teruaki Toeda , Anil Umesh , Hiromasa Umeda , Yousuke Sano , Akihito Hanaki
Abstract: Disclosed is a second base station device communicating with a first base station device. The second base station device includes a receiver configured to receive, from the first base station device, information for limiting radio resource allocation; a controller configured to allocate a radio resource based on the received information for limiting radio resource allocation; and a transmitter configured to transmit information for limiting radio resource allocation to the first base station device. The information for limiting radio resource allocation includes information indicating at least one of a frequency domain and a time domain indicating a location of a radio resource.
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公开(公告)号：US20200170030A1
公开(公告)日：2020-05-28
申请号：US16631727
申请日：2019-04-10
Applicant: NTT DOCOMO, INC.
Inventor： Yousuke Sano , Hiromasa Umeda
Abstract: A user apparatus is disclosed including a receiving unit configured to receive DL (Downlink)-UL (Uplink) configuration indicating a resource used to DL, a resource used to UL and a flexible resource in TDD (Time division duplex) and receive an UL scheduling from a base station apparatus, a transmitting unit configured to transmit UL to the base station apparatus based on the DL-UL configuration and the UL scheduling, and a control unit configured to determine a target ratio not to exceed a ratio of using UL resource and indicate the target ratio as a UE (User Equipment) capability to the base station apparatus. In other aspects, a base station device is also disclosed.
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Patent Agency Ranking
公开(公告)号：US20200008226A1
公开(公告)日：2020-01-02
申请号：US16483593
申请日：2018-01-22
Applicant: NTT DOCOMO, INC.
Inventor： Yousuke Sano , Kazuki Takeda , Kazuaki Takeda , Satoshi Nagata
Abstract: Techniques for transmission and reception of a control channel with a directional beam are disclosed. One aspect of the present invention relates to a base station, comprising: a scheduling unit configured to allocate a radio resource to a user apparatus; and a signal processing unit configured to process a radio signal for transmission to and reception from the user apparatus, wherein the scheduling unit allocates control information for transmission to the user apparatus to a radio resource within a search space specific to the user apparatus, and the signal processing unit transmits the control information to the user apparatus with a transmission beam corresponding to the allocated radio resource among multiple types of transmission beams.
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公开(公告)号：US20190394001A1
公开(公告)日：2019-12-26
申请号：US16481784
申请日：2018-01-22
Applicant: NTT DOCOMO, INC.
Inventor： Yousuke Sano , Kazuki Takeda , Satoshi Nagata
IPC: H04L5/00
Abstract: Transmission and reception techniques for reference signals to implement proper precoding gain and channel estimation accuracy are disclosed. One aspect of the present invention relates to a base station, comprising: a communication control unit configured to control radio communication with a user apparatus; and a reference signal processing unit configured to indicate a reference signal configuration for each resource assignment unit to the user apparatus and transmit a reference signal to the user apparatus in accordance with the indicated reference signal configuration.
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8.发明申请公开(公告)号：US20190342051A1
公开(公告)日：2019-11-07
申请号：US16474701
申请日：2017-11-30
Applicant: NTT DOCOMO, INC.
Inventor： Yousuke Sano , Kazuki Takeda , Satoshi Nagata , Shaozhen Guo , Xin Wang , Xiaolin Hou , Huiling Jiang
Abstract: A user equipment apparatus in a radio communication system in which uplink communication and downlink communication are dynamically changed includes a reception unit configured to receive, from a base station, control information indicating a resource for an uplink demodulation reference signal in a subframe used for transmitting uplink data; and a transmitting unit configured to transmit the uplink demodulation reference signal according to the control information; wherein the resource for the uplink demodulation reference signal is multiplexed into a part of resources corresponding to one or more symbols at a beginning of a data segment in the subframe used for transmitting the uplink data.
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公开(公告)号：US20190158257A1
公开(公告)日：2019-05-23
申请号：US16316674
申请日：2017-06-23
Applicant: NTT DOCOMO, INC.
Inventor： Yousuke Sano , Kazuaki Takeda , Satoshi Nagata
Abstract: Provided is a user equipment in a radio communication system that includes a plurality of user equipments and a base station and supports a communication scheme in which uplink radio resources are shared by the plurality of user equipments, and the user equipment includes a control unit that determines that retransmission of an uplink signal is performed when NACK is received from the base station with respect to the uplink signal or when none of ACK and NACK are received with respect to the uplink signal and a transmitting unit that retransmits the uplink signal on the basis of a predetermined retransmission scheme when the control unit determines that the retransmission of the uplink signal is performed.
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公开(公告)号：US20190082469A1
公开(公告)日：2019-03-14
申请号：US16088643
申请日：2017-02-03
Applicant: NTT DOCOMO, INC.
Inventor： Yousuke Sano , Kazuaki Takeda , Satoshi Nagata
Abstract: A user equipment that is provided in a wireless communication system including a base station and the user equipment includes a selection unit that selects one access method from a plurality of access methods used when uplink communications start and a communication unit that transmits an uplink signal to the base station according to a procedure defined by the selected access method.
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