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公开(公告)号：US20210377937A1
公开(公告)日：2021-12-02
申请号：US17045096
申请日：2018-04-05
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou
IPC: H04W72/04
Abstract: A transmitting apparatus includes a transmitting section that transmits a physical shared channel for which data mapping type B and a plurality of repetitions are configured, and a control section that performs control to perform the plurality of repetitions in one slot in a case that a time resource of the physical shared channel satisfies a certain condition.
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公开(公告)号：US20210360665A1
公开(公告)日：2021-11-18
申请号：US17280466
申请日：2018-09-28
Applicant: NTT DOCOMO, INC.
Inventor： Hideaki Takahashi , Kazuki Takeda , Hiroki Harada
Abstract: A user terminal according to one aspect of the present disclosure includes a receiving section that receives downlink control information including a given field indicating a frequency domain resource assigned to a downlink shared channel, and a control section that controls reception of the downlink shared channel based on whether or not a control resource set for a common search space is configured based on a master information block (MIB).
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公开(公告)号：US11178684B2
公开(公告)日：2021-11-16
申请号：US16489945
申请日：2017-03-02
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang
Abstract: The present invention is designed so that DL data can be received, and HARQ-ACK can be transmitted, properly, even when different data scheduling methods than existing LTE systems are used. According to one aspect of the present invention, a user terminal has a receiving section that receives DL control information, and a control section that controls receipt of DL data scheduled by the DL control information, and transmission of delivery acknowledgment information in response to the DL data, and the DL control information indicates a relationship between the timing of receiving the DL control information, the timing of receiving the DL data, and the timing of transmitting the delivery acknowledgment information, and the control section determines, based on the DL control information, the timing of receiving the DL data and the timing of transmitting the delivery acknowledgment information.
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公开(公告)号：US20210352602A1
公开(公告)日：2021-11-11
申请号：US17383061
申请日：2021-07-22
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Kazuki Takeda , Satoshi Nagata
Abstract: A terminal is disclosed that includes a receiver that receives by higher layer signaling in a first cell, when a plurality of cells including the first cell and a second cell are configured, information related to a synchronization signal block index indicated by using a bitmap. The terminal also includes a controller that controls a reception of a synchronization signal block based on the information related to the synchronization signal block index. 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：US20210336726A1
公开(公告)日：2021-10-28
申请号：US17264581
申请日：2018-07-30
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Shaozhen Guo , Xiaolin Hou
Abstract: According to one aspect of the present disclosure, a user terminal includes a control section that determines, when an uplink control channel (PUCCH) repetition and a dynamic hybrid automatic repeat reQuest acknowledgement (HARQ-ACK) codebook are configured, a codebook for PUCCH transmission per slot based on at least one of a total downlink assignment index (T-DAI), a counter downlink assignment index (C-DAI), a timing from reception of a physical downlink shared channel (PDSCH) to transmission of the HARQ-ACK corresponding to the PDSCH and repetition factor, and a transmitting section that transmits HARQ-ACK based on the codebook by applying PUCCH repetition to the HARQ-ACK. According to one aspect of the present disclosure, it is possible to appropriately transmit the UCI even when the PUCCH repetition is used.
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Patent Agency Ranking
公开(公告)号：US20210329685A1
公开(公告)日：2021-10-21
申请号：US17268744
申请日：2018-08-17
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Shohei Yoshioka , Kazuki Takeda , Satoshi Nagata
Abstract: A user terminal according to one aspect of the present disclosure includes: a transmitting/receiving section that receives or transmits a shared channel based on fallback Downlink Control Information (DCI); and a control section that makes a given assumption on a density of a Phase Tracking Reference Signal (PTRS) of the shared channel scheduled by the fallback DCI. According to one aspect of the present disclosure, it is possible to appropriately determine a PTRS density.
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公开(公告)号：US11153855B2
公开(公告)日：2021-10-19
申请号：US16333880
申请日：2017-09-14
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Kazuki Takeda , Kazuaki Takeda , Satoshi Nagata
Abstract: The present invention is designed so that control information and reference signals that are transmitted by using control channels can be multiplexed adequately in the UL/DL in future radio communication systems. According to the present invention, A transmission apparatus transmits control information by using a control channel, and this transmission apparatus has a multiplexing section that multiplexes the control information and a reference signal in a time domain in one symbol, and a transmission section that transmits the control information and the reference signal.
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公开(公告)号：US11147031B2
公开(公告)日：2021-10-12
申请号：US16315461
申请日：2017-07-03
Applicant: NTT DOCOMO, INC.
Inventor： Hiroki Harada , Kazuki Takeda , Satoshi Nagata
Abstract: A future radio communication system (NR) appropriately detects a synchronization signal transmitted in a flexible time and frequency resource. A user terminal includes: a reception section that receives a synchronization signal and/or a common control information channel transmitted in a flexible resource; and a control section that recognizes a resource position at which the synchronization signal is transmitted, based on the synchronization signal or the common control information channel.
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公开(公告)号：US20210315041A1
公开(公告)日：2021-10-07
申请号：US17266729
申请日：2018-08-09
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Kazuki Takeda , Satoshi Nagata
Abstract: To properly control communication even when a BFR procedure is performed in multiple cells, a user terminal according to one aspect of the present disclosure includes a transmitting section that transmits a beam recovery request (Beam Failure Recovery reQuest (BFRQ)) on a cell in which a radio link failure has occurred, using an uplink control channel, and a control section that performs transmission of the uplink control channel in a given cell configured in advance or a cell for uplink control channel transmission associated with the cell in which the radio link failure has occurred.
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公开(公告)号：US20210288761A1
公开(公告)日：2021-09-16
申请号：US16610837
申请日：2018-05-03
Applicant: NTT DOCOMO, INC. , DOCOMO INNOVATIONS, INC
Inventor： Yuichi Kakishima , Kazuki Takeda , Yosuke Sano , Lihui Wang , Satoshi Nagata
Abstract: A method of codeword (CW) mapping in a wireless communication system includes determining, with a Transmission and Reception Point (TRP), order of resources mapped to the CW, and mapping, with the TRP, the CW to resources in accordance with the determined order. The order of resources is determined based on a frequency resource, a time resource, and a layer. The determining determines the order based on a type of re¬ transmission control. The type of re-transmission control is CW-level Hybrid Automatic Repeat Request (HARQ) and code block group (CBG)-level HARQ. When the CW-level HARQ is applied, the determining determines the order as order of the layer, the frequency resource, and the time resource. When the CBG-level HARQ is applied, the determining determines the order as order of the frequency resource, the layer, and the time resource.
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