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公开(公告)号：US20230054553A1
公开(公告)日：2023-02-23
申请号：US17797302
申请日：2020-02-06
Applicant: NTT DOCOMO, INC.
Inventor： Shinya Kumagai , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: A terminal includes a reception section that receives downlink feedback information (DFI); and a control section that terminates repetition of data in uplink transmission in a case where an acknowledgement (ACK) is detected in the DFI. In other aspects, a base station, a radio communication method, and a radio communication system comprising a terminal and a base station are also disclosed.
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公开(公告)号：US11540225B2
公开(公告)日：2022-12-27
申请号：US16332852
申请日：2017-09-13
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang
Abstract: The present invention is designed to control transmission power properly even when communication is controlled based on shortened processing time. A user terminal communicates in a cell where a shortened TTI, having a transmission time interval (TTI) length shorter than 1 ms, is used, and/or in a cell where communication is controlled based on shortened processing time, which is shorter than in existing LTE systems, and this user terminal has a receiving section that receives a DL signal, a transmission section that transmits a UL signal in response to the DL signal, and a control section that controls transmission power of the UL signal based on a power control command contained in downlink control information transmitted in a predetermined transmission time interval in which the DL signal is transmitted, or in a transmission time interval located before the predetermined transmission time interval.
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公开(公告)号：US11528729B2
公开(公告)日：2022-12-13
申请号：US16346270
申请日：2017-10-31
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Yuki Matsumura , Kazuaki Takeda , Satoshi Nagata , Lihui Wang
Abstract: To properly transmit uplink control information (UCI) in future radio communication systems, a user terminal of the present invention is provided with a transmitting section that transmits uplink control information (UCI) in at least one of a plurality of slots with different time lengths of UL duration, and a control section that controls transmission of the UCI, where based on an explicit instruction from a radio base station or an implicit determination by the user terminal, the control section controls an uplink (UL) control channel used in transmission of the UCI.
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公开(公告)号：US20220386361A1
公开(公告)日：2022-12-01
申请号：US17755772
申请日：2019-11-08
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Takahashi , Satoshi Nagata , Lihui Wang , Xiaolin Hou
Abstract: A terminal according to an aspect of the present disclosure includes a receiving section configured to receive first information including one or more higher layer parameters for a first-type configured grant-based uplink shared channel, and a control section configured to determine a higher layer parameter to be applied from the first information on the basis of a notification by higher layer signaling.
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公开(公告)号：US11496344B2
公开(公告)日：2022-11-08
申请号：US17054062
申请日：2018-05-11
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Shaozhen Guo , Lihui Wang , Xiaolin Hou
Abstract: A user terminal according to one aspect of the present disclosure includes: a transmitting/receiving section that performs transmission and reception by using a first Component Carrier (CC) that uses a first Sub-Carrier Spacing (SCS), and a second CC that uses a second SCS larger than the first SCS; and a control section that, when a semi-static Hybrid Automatic Repeat reQuest Acknowledgement (HARQ-ACK) codebook related to both of the first CC and the second CC is transmitted on an uplink shared channel of the second CC, deletes an HARQ-ACK bit corresponding to a downlink shared channel candidate that does not satisfy a requirement of processing time. According to one aspect of the present disclosure, it is possible to appropriately transmit HARQ-ACK even when a semi-static HARQ-ACK codebook is configured.
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Patent Agency Ranking
公开(公告)号：US20220337357A1
公开(公告)日：2022-10-20
申请号：US17760639
申请日：2019-09-17
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Takahashi , Satoshi Nagata , Xiaohong Zhang , Shaozhen Guo , Lihui Wang , Xiaolin Hou
Abstract: A terminal according to an aspect of the present disclosure includes: a receiving section that receives downlink control information for releasing a plurality of semi-persistent schedulings (SPSs); and a control section that performs control of including a valid Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) corresponding to the downlink control information at at least one of a plurality of positions of HARQ-ACKs corresponding to downlink shared channel (Physical Downlink Shared Channel (PDSCH)) reception of the plurality of SPSs in a semi-static HARQ-ACK codebook. According to an aspect of the present disclosure, the HARQ-ACK codebook can be appropriately determined even when joint SPS release is used.
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公开(公告)号：US11457419B2
公开(公告)日：2022-09-27
申请号：US16477329
申请日：2018-01-12
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Xiaolin Hou , Huiling Jiang
Abstract: The present invention is designed so that transmission power is controlled adequately even when communication is performed using a plurality of transmission time intervals (TTIs) of varying lengths. According to one aspect of the present invention, a user terminal has a transmission section that transmits signals using a plurality of transmission time intervals (TTIs) of varying lengths, and a control section that controls the transmission power of a first signal that is transmitted in a first TTI, and the transmission power of a second signal that is transmitted in a second TTI having a shorter TTI duration than the first TTI, and, when the total transmission power of the first signal and the second signal that are transmitted in an overlapping manner exceeds the maximum transmission power, the control section exerts control so that transmission power is preferentially allocated to one of the first signal and the second signal.
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公开(公告)号：US20220304019A1
公开(公告)日：2022-09-22
申请号：US17637341
申请日：2019-08-23
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Takahashi , Satoshi Nagata , Lihui Wang
Abstract: A terminal according to an aspect of the present disclosure includes a receiving section configured to receive information related to one or a plurality of frequency hopping modes, and a control section configured to determine, based on information related to the same frequency hopping mode or information related to different frequency hopping modes, a frequency hopping mode to be applied to each of a first uplink shared channel to which repetitive transmission in a first unit is applied and a second uplink shared channel to which repetitive transmission in a second unit shorter than the first unit is applied.
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公开(公告)号：US20220279543A1
公开(公告)日：2022-09-01
申请号：US17629590
申请日：2019-07-29
Applicant: NTT DOCOMO, INC.
Inventor： Shohei Yoshioka , Yuki Matsumura , Hiroki Harada , Satoshi Nagata , Lihui Wang
Abstract: A terminal according to an aspect of the present disclosure includes a control section that assumes a certain restriction being applied to a communication supporting a subcarrier spacing wider than a certain subcarrier spacing, and a transmitting/receiving section that performs transmission/reception processing of the communication based on the certain restriction. According to an aspect of the present disclosure, it is possible to suitably suppress adverse influence of a time taken for communication switching even when a relatively wide subcarrier spacing is used.
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公开(公告)号：US20220239445A1
公开(公告)日：2022-07-28
申请号：US17609625
申请日：2019-05-09
Applicant: NTT DOCOMO, INC.
Inventor： Shohei Yoshioka , Satoshi Nagata , Shaozhen Guo , Lihui Wang , Xiaolin Hou
Abstract: A user terminal according to an aspect of the present disclosure includes a control section that generates a Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK) codebook containing only HARQ-ACK corresponding to a semi-persistent scheduling (SPS) downlink shared channel (Physical Downlink Shared Channel (PDSCH)), so that HARQ-ACK bits corresponding to the PDSCH each SPS are ordered in accordance with a given rule, and a transmitting section that transmits an HARQ-ACK information bit corresponding to the HARQ-ACK codebook by using an uplink control channel resource based on an SPS corresponding to HARQ-ACK at a specific location in the order. According to an aspect of the present disclosure, it is possible to feed back HARQ-ACK appropriately even when a plurality of SPSs is utilized.
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