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公开(公告)号：US11026157B2
公开(公告)日：2021-06-01
申请号：US16266730
申请日：2019-02-04
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Kazuaki Takeda , Satoshi Nagata
Abstract: A user terminal that includes a receiver that receives a synchronization signal in accordance with timing information provided from a network and a processor that controls a measurement of a channel state information reference signal (CSI-RS). The CSI-RS corresponds to the received synchronization signal, and is based on information about a time-frequency resource configuration and a scrambling ID of the CSI-RS provided from the network.
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公开(公告)号：US20210160794A1
公开(公告)日：2021-05-27
申请号：US17144630
申请日：2021-01-08
Applicant: NTT DOCOMO, INC.
Inventor： Daiki Takeda , Hiroki Harada , Satoshi Nagata
Abstract: A terminal is disclosed that includes a reception section that receives a first synchronization signal and a second synchronization signal mapped on predetermined resources and a control section that controls synchronization processing based on the first synchronization signal and the second synchronization signal, where a same transmission bandwidth and subcarrier spacing are applied to the first synchronization signal and the second synchronization signal. In other aspects, a radio communication method is also disclosed.
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公开(公告)号：US20210153244A1
公开(公告)日：2021-05-20
申请号：US16621558
申请日：2017-06-15
Applicant: NTT DOCOMO, INC.
Inventor： Tomoya Ohara , Hiroki Harada , Ryosuke Osawa
Abstract: A user equipment in one embodiment of the present invention includes a random access control unit for deciding whether a condition that same transmission power is usable when changing a transmission beam and retransmitting a preamble is satisfied, and determining transmission power of the preamble based on the deciding, and a transmission unit for transmitting the preamble using the determined transmission power.
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公开(公告)号：US11013035B2
公开(公告)日：2021-05-18
申请号：US16098997
申请日：2017-05-01
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Kazuki Takeda , Satoshi Nagata , Hiroki Harada
Abstract: The present invention is designed so that retransmission control and/or division transmission are executed properly when contention-based UL transmission is used. A transmission section that transmits UL data, and a control section that controls retransmission and/or division transmission of the UL data are provided, and the control section exerts control to perform new UL data transmission before the retransmission and/or initial transmission in the division transmission without UL grant from a radio base station, and the control section controls the retransmission and/or second and subsequent transmissions in the division transmission based on a response signal from the radio base station.
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公开(公告)号：US11012127B2
公开(公告)日：2021-05-18
申请号：US16612644
申请日：2017-05-12
Applicant: NTT DOCOMO, INC.
Inventor： Ryosuke Osawa , Hiroki Harada , Yuichi Kakishima
IPC: H04B7/02 , H04B7/0456 , H04B7/06 , H04B7/08
Abstract: The apparatus according to one aspect of the present invention communicates using beams, and has a receiving section that receives information about a beam of another apparatus, and a control section that decides whether or not to select a transmitting beam autonomously, based on whether certain information is present or not. According to one aspect of the present invention, even when certain apparatus is capable of selecting beams autonomously, it is still possible to reduce the decline in communication throughput and so forth.
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Patent Agency Ranking
公开(公告)号：US20210136816A1
公开(公告)日：2021-05-06
申请号：US17145916
申请日：2021-01-11
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Satoshi Nagata , Jing Wang , Yu Jiang , Lihui Wang , Liu Liu
Abstract: A terminal is disclosed including a receiver that receives first downlink control information (DCI) indicating SRS transmission and second DCI indicating a listening condition for PUSCH transmission and a processor that, when contiguous transmissions of the SRS transmission and the PUSCH transmission are scheduled, changes the listening condition for following PUSCH transmission based on a listening result for the SRS transmission. In other aspects, a base station, a radio communication method, and a system are also disclosed.
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公开(公告)号：US20210127370A1
公开(公告)日：2021-04-29
申请号：US17051024
申请日：2018-05-15
Applicant: NTT DOCOMO, INC.
Inventor： Tomoya Ohara , Hiroki Harada
Abstract: A terminal includes a processor, coupled to a transceiver, that monitors a PDCCH (Physical downlink control channel) candidate in a first search space during a random access procedure The transceiver receives a random access response or a PDSCH (Physical downlink shared channel) for contention resolution from a base station, based on information included in the PDCCH candidate, and the transceiver receives a PDSCH or transmit an uplink signal based on information included in a PDCCH candidate monitored in the first search space, unless a second search space of a type other than the first search space is configured after the random access procedure is completed.
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公开(公告)号：US10993174B2
公开(公告)日：2021-04-27
申请号：US16475546
申请日：2018-01-05
Applicant: NTT DOCOMO, INC.
Inventor： Tomoya Ohara , Hiroki Harada
Abstract: A user apparatus in a radio communication system including a base station and the user apparatus, including: a reception unit configured to receive a plurality of predetermined signals transmitted from the base station using a plurality of beams; and a transmission unit configured to transmit a preamble using a plurality of resources corresponding to the plurality of beams, wherein the reception unit receives, from the base station, system information including information of the plurality of resources corresponding to the plurality of beams, and the transmission unit obtains the information of the plurality of resources from the system information.
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公开(公告)号：US20210120506A1
公开(公告)日：2021-04-22
申请号：US16634404
申请日：2017-07-28
Applicant: NTT DOCOMO, INC.
Inventor： Daiki Takeda , Hiroki Harada , Satoshi Nagata
Abstract: A user terminal is disclosed including a reception section that receives a Synchronization Signal (SS) block including a synchronization signal and a broadcast channel and a control section that specifies SS block identification information based on at least a sequence of a first reference signal and a sequence of a second reference signal. The sequence of the first reference signal being a sequence to be allocated to a first symbol, and being generated based on cell identification information for identifying a cell and a first part of the SS block identification information for identifying the SS block. The sequence of the second reference signal being a sequence to be allocated to a second symbol, being generated based on the cell identification information for identifying the cell and a second part of the SS block identification information, and being different from the sequence of the first reference signal.
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公开(公告)号：US10980050B2
公开(公告)日：2021-04-13
申请号：US15524774
申请日：2015-10-09
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Kazuki Takeda , Satoshi Nagata
Abstract: The present invention is designed so that it is possible to reduce the measurement-induced increase of load and power consumption in user terminals even when the number of component carriers that can be configured per user terminal is expanded. A user terminal communicates with a radio base station that configures groups (TAGs) comprised of one or more cells, and has a receiving section that receives information related to component carriers (CCs) included in the groups, and a measurement section that makes measurements on a per group basis based on the information related to the component carriers.
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