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公开(公告)号：US20190215818A1
公开(公告)日：2019-07-11
申请号：US16328838
申请日：2017-08-30
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Shaozhen Guo , Lihui Wang , Liu Liu , Xiaolin Hou , Huiling Jiang
CPC classification number: H04W72/0406 , H04W28/04 , H04W72/04 , H04W72/12 , H04W72/1289 , Y02D70/00 , Y02D70/10 , Y02D70/12 , Y02D70/126
Abstract: The present invention is designed so that the transmission of PUSCH can be controlled properly when the reference value for the timing for transmitting signals is controlled in radio base stations and/or user terminals. A user terminal, according to the present invention, has a receiving section that receives downlink control information (DCI), and a control section that controls transmission of an uplink (UL) shared channel that is scheduled by the DCI, and the control section controls the transmission of the UL shared channel based on a reference value that is configured for the timing for transmitting the UL shared channel.
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公开(公告)号：US20190190763A1
公开(公告)日：2019-06-20
申请号：US16322581
申请日：2017-08-03
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Lihui Wang , Liu Liu , Huiling Jiang , Can Li , Yong Li , Wenbo Wang
CPC classification number: H04L27/2662 , H04L5/0053 , H04L27/2676 , H04W28/06 , H04W72/04 , H04W72/0413
Abstract: The present invention is designed to properly transmit demodulation reference signals for UL data channels in short TTIs. A user terminal according to one aspect of the present invention has a transmission section that transmits a demodulation reference signal for an uplink (UL) data channel, and a control section that controls the transmission of the demodulation reference signal, and, when the UL data channel is transmitted in a second transmission time interval (TTI), which is comprised of a smaller number of symbols than a first TTI, the control section maps the demodulation reference signal to a symbol that is selected based on the arrangement pattern of the second TTI.
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公开(公告)号：US20190190572A1
公开(公告)日：2019-06-20
申请号：US16322167
申请日：2017-08-02
Applicant: NTT DOCOMO, INC.
Inventor： Ryosuke Osawa , Hiroki Harada , Kazuki Takeda , Yuichi Kakishima
IPC: H04B7/0456 , H04B7/0404 , H04W72/04 , H04W80/02
CPC classification number: H04B7/0456 , H04B7/0404 , H04B7/0413 , H04J1/00 , H04L27/26 , H04W72/042 , H04W80/02
Abstract: The present invention is designed to improve the receiving characteristics of UL signals in multi-antenna transmission in the UL in future radio communication systems. According to the present invention, a user terminal has a transmission section that transmits an uplink (UL) signal, which is precoded per precoding group comprised of a predetermined number of frequency resource units, and a control section that controls the precoding of the UL signal. The control section controls the size of the precoding group in the frequency direction.
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公开(公告)号：US20190181990A1
公开(公告)日：2019-06-13
申请号：US16323565
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 storage unit that includes a soft buffer region that is used in a retransmission control of downlink data that is received from the base station; and a retransmission control unit that divides a partial region of the soft buffer region into a plurality of sub-buffer regions, and performs the retransmission control of the downlink data that is received from the base station by using one or a plurality of sub-buffer regions among the plurality of sub-buffer regions.
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公开(公告)号：US20190173656A1
公开(公告)日：2019-06-06
申请号：US16320641
申请日：2017-07-24
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata
Abstract: The present invention is designed so that, even when communication is carried out by multiplexing a number of numerologies in the same carrier, it is still possible to communicate properly. A user terminal communicates in a radio communication system where frame structures of a plurality of numerologies are frequency-division-multiplexed, and has a receiving section that receives first information, which relates to a frame structure of a predetermined numerology, and second information, which specifies a period in which DL communication and/or UL communication are disallowed, or a period in which a specific communicating direction is configured, in the predetermined numerology, and a control section that controls DL receipt and/or UL transmission based on the first information and the second information.
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Patent Agency Ranking
公开(公告)号：US20190166619A1
公开(公告)日：2019-05-30
申请号：US16300363
申请日：2017-05-11
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Yousuke Sano , Kazuki Takeda , Satoshi Nagata
IPC: H04W72/14 , H04W74/08 , H04W80/02 , H04W72/04 , H04B1/7143
Abstract: The present invention is designed to adequately control resource regions for contention-based UL transmission. A user terminal, according to the present invention, has a transmission section that transmits UL data without an uplink (UL) grant from a radio base station, and a control section that controls transmission of the UL data, and the control section configures a plurality of resource regions with varying parameters, and selects a resource region to use to transmit the UL data from among the plurality of resource regions.
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157.发明申请公开(公告)号：US20190159198A1
公开(公告)日：2019-05-23
申请号：US16258039
申请日：2019-01-25
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Tooru Uchino , Hiroki Harada , Satoshi Nagata
Abstract: A user terminal is disclosed that includes a receiver that receives a downlink signal using multiple cells and a transmitter that periodically transmits multiple channel state information using a predetermined transmission time unit length. The user terminal also includes a processor that controls transmission of the channel state information by configuring a transmission period and timing of the multiple channel state information per cell based on a notification from a higher layer.
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公开(公告)号：US20190150098A1
公开(公告)日：2019-05-16
申请号：US16089073
申请日：2017-03-29
Applicant: NTT DOCOMO, INC.
Inventor： Yuki Matsumura , Kazuki Takeda , Satoshi Nagata
Abstract: The present invention is designed to improve DL received quality in future radio communication systems. According to the present invention, a user terminal has a receiving section that receives a downlink (DL) data channel, which is demodulated using a user terminal-specific reference signal, a transmission section that transmits a transmission power control (TPC) command, which is used to control transmission power of the DL data channel and/or the reference signal; and a control section that controls transmission of the TPC command.
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公开(公告)号：US20190150032A1
公开(公告)日：2019-05-16
申请号：US16307528
申请日：2017-06-08
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata
Abstract: The present invention is designed to maximize the amount of radio resources that can be used in DL, UL or SL in a subframe containing a given DL signal or UL resource. A user terminal has a receiving section that receives downlink control information, and a control section that controls communication by switching between UL communication and DL communication within a subframe based on the downlink control information, and, in a subframe including a signal or a resource in a given communication direction, the control section switches communication in a direction different from the communication direction of the signal or the resource.
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公开(公告)号：US20190149311A1
公开(公告)日：2019-05-16
申请号：US16307541
申请日：2017-06-08
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata
Abstract: The present invention is designed so that a predetermined cell is activated and/or deactivated properly even when shortened TTIs are used. A user terminal, which communicates with a plurality of cells, including a given cell in which a shortened TTI having a TTI duration shorter than 1 ms is configured, has a receiving section that receives an activation command and/or a deactivation command directed to the given cell, and a control section that controls activation of the given cell based on the activation command and/or controls deactivation of the given cell based on the deactivation command, and the control section controls an operation period for activation and/or deactivation of the given cell based on the TTI duration in the given cell, or a TTI duration in a cell where the activation command and/or the deactivation command is received.
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