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公开(公告)号：US11291022B2
公开(公告)日：2022-03-29
申请号：US16319535
申请日：2017-07-24
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang
Abstract: The present invention is designed to support appropriate CSI measurements and reporting even when shortened TTIs and/or processing time reduction are introduced. A user terminal according to one aspect of the present invention communicates in a cell, which uses a shortened transmission time interval (TTI) that has a shorter TTI duration than 1 ms and/or in a cell in which communication is controlled by applying shortened processing time that is shorter than processing time in an existing LTE system, and this user terminal has a measurement section that measures channel state information (CSI) by using a CSI reference resource, and a transmission section that transmits the CSI in a given subframe, and the CSI reference resource is found in a subframe that is located a period before the given subframe, the period being shorter than a given time period.
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公开(公告)号：US11284401B2
公开(公告)日：2022-03-22
申请号：US16483303
申请日：2018-02-02
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Qin Mu , Xu Zhang , Liu Liu , Huiling Jiang
IPC: H04W72/04 , H04B7/0456 , H04L5/00 , H04L5/10 , H04W72/12
Abstract: The present invention is designed to reduce the deterioration of communication quality and so on even when communication is performed by applying different configurations than in existing LTE systems. A receiving section that receives a downlink control channel, and a control section that controls receipt of the down link control channel, are provided, the downlink control channel is transmitted using downlink control channel elements including a plurality of resource element groups (REGs), and the control section controls receiving processes per REG group comprised of a plurality of REGs.
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公开(公告)号：US11284371B2
公开(公告)日：2022-03-22
申请号：US16322536
申请日：2017-08-03
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Hiroki Harada , Kazuki Takeda , Satoshi Nagata , Yuichi Kakishima
Abstract: The present invention is designed so that beamforming can be executed properly even when user terminals are in idle mode. A user terminal according to the present invention communicates with a radio base station that uses a plurality of beam patterns, and has a receiving section that performs a receiving process for paging information which is transmitted in varying beam patterns, in a paging time period comprised of a plurality of unit periods, and a transmission section that transmits a response signal in response to receipt of the paging information.
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公开(公告)号：US20220070908A1
公开(公告)日：2022-03-03
申请号：US17276392
申请日：2018-09-21
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
IPC: H04W72/12
Abstract: In order to appropriately control reception of downlink control information, a user terminal according to one aspect of the present disclosure includes: a receiving section that receives one or more pieces of downlink control information for different applications in a given cell; and a control section that stores the downlink control information thus received so that the number of pieces of downlink control information for a given application among the received downlink control information does not exceed a given number.
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公开(公告)号：US20220039129A1
公开(公告)日：2022-02-03
申请号：US17275766
申请日：2018-09-13
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: A user terminal according to one aspect of the present disclosure includes a transmitting/receiving section that performs multi-slot transmission or reception of a given channel, and a control section that makes a given assumption related to a change in a transmission configuration indication (TCI) state of the multi-slot transmission or reception. According to one aspect of the present disclosure, the TCI state of a multi-slot channel/signal can be appropriately controlled.
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Patent Agency Ranking
公开(公告)号：US11229020B2
公开(公告)日：2022-01-18
申请号：US16762039
申请日：2017-11-10
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Huiling Li , Xiaolin Hou , Chongning Na
Abstract: To appropriately control CSI reporting in a case where a configuration different from the configurations in the existing LTE systems is employed for communication, a user terminal includes a receiving section that receives information indicating whether to activate or deactivate channel state information reporting, in at least one of first downlink control information indicating UL transmission specifically to the user terminal, second downlink control information indicating the UL transmission to a plurality of user terminals, and MAC control information, and a control section that controls reporting of channel state information, based on the information indicating whether to activate or deactivate the channel state information reporting.
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公开(公告)号：US20220007411A1
公开(公告)日：2022-01-06
申请号：US17290437
申请日：2018-11-01
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: A user terminal includes: a receiving section that receives pieces of configuration information of one or more configured grants; and a control section that controls differentiation of at least one of the pieces of configuration information of the one or more configured grants and a set including the pieces of configuration information of the one or more configured grants.
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公开(公告)号：US20210399859A1
公开(公告)日：2021-12-23
申请号：US17464072
申请日：2021-09-01
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Hiroki Harada , Satoshi Nagata
Abstract: A terminal is disclosed that includes a processor that, in case where frequency division duplex (FDD) is applied, controls a transmission of an uplink (UL) signal, in FDD, at a same timing as a UL transmission timing that is applied in time division duplex (TDD). The terminal also includes a receiver that receives a downlink control information (DCI), and a physical downlink shared channel (PDSCH) scheduled by the DCI. The terminal also includes a transmitter that transmits a HARQ-ACK in response to the PDSCH. The reception of the DCI and the transmission of the HARQ-ACK are allowed within one slot. In other aspects, a radio communication method, a base station, and a system are also disclosed.
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公开(公告)号：US20210392663A1
公开(公告)日：2021-12-16
申请号：US16323673
申请日：2017-08-09
Applicant: NTT DOCOMO, INC.
Inventor： Shinpei Yasukawa , Satoshi Nagata , Kazuki Takeda
Abstract: A user equipment in a radio communication system including a base station and the user equipment, the user equipment including: a reception unit that receives control information, which includes allocation information of a resource for downlink data reception, and allocation information of a resource for uplink control information transmission, from the base station by a downlink control channel; and a transmission unit that transmits the uplink control information to the base station on the basis of the control information that is received by the reception unit.
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公开(公告)号：US20210392601A1
公开(公告)日：2021-12-16
申请号：US17285271
申请日：2018-10-16
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Tooru Uchino , Hideaki Takahashi , Lihui Wang , Shaozhen Guo , Xiaolin Hou
Abstract: A terminal includes: a reception section that receives adjustment information for adjusting a communication timing based on a reference time; and a control section that controls a granularity of adjusting the communication timing according to a size of the adjustment information.
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