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公开(公告)号：US11894925B2
公开(公告)日：2024-02-06
申请号：US16080409
申请日：2017-02-28
Applicant: NTT DOCOMO, INC.
Inventor： Chongning Na , Huiling Jiang , Yuichi Kakishima , Satoshi Nagata
CPC classification number: H04L1/0027 , H04L1/0026 , H04L5/0005 , H04L5/0048 , H04L5/0064
Abstract: An embodiment of present disclosure provides a method of transmitting channel state information reference signals, and a base station. An embodiment of the present disclosure provides a method of transmitting channel state information reference signals (CSI-RSs), which is executed by a base station, and this method includes the steps of determining whether or not it is necessary to use aperiodic CSI-RSs in a communication system in which a base station to use periodic CSI-RSs is provided, generating an aperiodic CSI-RS trigger signal and communicating the aperiodic CSI-RS trigger signal to a mobile station when aperiodic CSI-RSs need to be used, and communicating aperiodic CSI-RSs to the mobile station in accordance with the aperiodic CSI-RS trigger signal.
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公开(公告)号：US11838933B2
公开(公告)日：2023-12-05
申请号：US16494440
申请日：2017-03-17
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Qin Mu , Liu Liu , Chongning Na , Xin Wang , Jing Wang , Lihui Wang , Min Liu , Huiling Jiang
IPC: H04W72/04 , H04W72/12 , H04W72/53 , H04L1/1812 , H04L5/00 , H04W24/08 , H04W72/0446 , H04W72/0453 , H04W72/23
CPC classification number: H04W72/53 , H04L1/1819 , H04L5/0055 , H04W24/08 , H04W72/0446 , H04W72/0453 , H04W72/23
Abstract: The present invention is designed to appropriately select PUCCH resources used to transmit HARQ-ACK. According to one aspect of the present invention, a user terminal has a control section that monitors candidate resources of one or more downlink (DL) control channels (DL) transmitted in multiple different time and/or frequency resources, and detects one or more downlink control information (DCI), and a transmission section that transmits delivery acknowledgment information in response to a downlink (DL) data channel by using an uplink (UL) control channel, and the control section selects resources for the UL control channel based on the DCI.
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公开(公告)号：US11750320B2
公开(公告)日：2023-09-05
申请号：US16766530
申请日：2018-11-28
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Runxin Wang , Chongning Na
CPC classification number: H04L1/0042 , H04L1/0057 , H04W28/04
Abstract: A communication apparatus is disclosed including a processor that performs a first encoding procedure to generate a first sequence of encoded bits from a first sequence of bits, and performs a second encoding procedure to generate a second sequence of encoded bits from a sequence of known bits; and a second sequence of bits comprising the first sequence of bits and the first sequence of encoded bits; and a transmitter that transmits a signal generated from the second sequence of encoded bits, wherein the second sequence of encoded bits is determined based on a length of the second sequence of bits.
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公开(公告)号：US11411694B2
公开(公告)日：2022-08-09
申请号：US16090484
申请日：2017-03-31
Applicant: NTT DOCOMO, INC. , DOCOMO INNOVATIONS, INC.
Inventor： Yuichi Kakishima , Satoshi Nagata , Chongning Na
Abstract: A method of aperiodic signal transmission from a base station (BS) to a user equipment (UE) includes transmitting, from the BS to the UE, reservation information indicating first resources reserved for aperiodic signal transmission via higher layer signaling, transmitting, from the BS to the UE, Downlink Control Information (DCI) indicating at least a second resource to be selected based on the first resources, and transmitting, from the BS to the UE, the aperiodic signals using the first resources.
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公开(公告)号：US20220086895A1
公开(公告)日：2022-03-17
申请号：US17533756
申请日：2021-11-23
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Qin Mu , Liu Liu , Chongning Na , Xin Wang , Jing Wang , Lihui Wang , Min Liu , Huiling Jiang
Abstract: An apparatus is disclosed including a receiver that receives a downlink control information and a downlink shared channel that is scheduled by the downlink control information; a processor that determines an allocation of the downlink shared channel in a time domain based on a first timing indicated by a first time unit and a second timing indicated by a second time unit that are obtained from information notified by the downlink control information; and an output apparatus that outputs information based on the downlink shared channel, wherein the first timing is defined based on a numerology of the downlink shared channel. In other aspects, a system is also disclosed.
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Patent Agency Ranking
公开(公告)号：US11219056B2
公开(公告)日：2022-01-04
申请号：US16494426
申请日：2017-03-17
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Qin Mu , Liu Liu , Chongning Na , Xin Wang , Jing Wang , Lihui Wang , Min Liu , Huiling Jiang
Abstract: A terminal is disclosed including a receiver that receives a downlink control information and a downlink shared channel that is scheduled by the downlink control information. The terminal also includes a processor that determines an allocation of the downlink shared channel in a time domain based on a first timing indicated by a first time unit and a second timing indicated by a second time unit that are obtained from information notified by the downlink control information. In other aspects, a radio communication method is also disclosed.
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公开(公告)号：US20210058797A1
公开(公告)日：2021-02-25
申请号：US16964786
申请日：2019-01-17
Applicant: NTT DOCOMO, INC.
Inventor： Shohei Yoshioka , Satoshi Nagata , Min Liu , Jing Wang , Chongning Na , Yuichi Kakishima
Abstract: A terminal is disclosed including a processor that increments a beam failure instance counter in a higher layer, based on a beam failure instance indication received from a physical layer; a transmitter that, when the beam failure instance counter is greater than or equal to a predetermined threshold, transmits a random access preamble based on a transmission instruction from the higher layer; and a receiver that monitors, within a predetermined response window period, a physical downlink control channel (PDCCH) for a response to the random access preamble based on a predetermined search space setting. In another aspect, a radio communication method for a terminal is also disclosed.
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8.发明申请公开(公告)号：US20200304190A1
公开(公告)日：2020-09-24
申请号：US16089098
申请日：2017-03-30
Applicant: NTT DOCOMO, INC.
Inventor： Chongning Na , Huiling Jiang , Yuichi Kakishima , Satoshi Nagata
IPC: H04B7/06 , H04B7/0417
Abstract: An embodiment of the present invention provides a CSI-RS transmission method, a CSI feedback method, a base station and a mobile station. The transmission method for a base station transmitting a channel state information reference signal (CSI-RS), includes transmitting a first CSI-RS relating to a first antenna port of the base station to a mobile station, forming a second antenna port that is beamformed based on a first CSI feedback received from the mobile station, transmitting a second CSI-RS relating to the second antenna port to the mobile station, and selecting a beam for data transmission to the mobile station, based on a second CSI feedback received from the mobile station.
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公开(公告)号：US20200295905A1
公开(公告)日：2020-09-17
申请号：US16650929
申请日：2017-09-29
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Yuichi Kakishima , Huiling Li , Chongning Na , Lihui Wang , Xin Wang
IPC: H04L5/00
Abstract: To appropriately control UL transmission such as a CSI reporting when communication is performed by applying a different configuration from those of legacy LTE systems, one aspect of a user terminal according to the present invention includes: a transmitting section that transmits first Channel State Information (CSI) and second CSI of different information types to be reported, by using an uplink control channel and/or an uplink shared channel based on timings respectively configured by a base station; and a control section that, when transmission timings of the first CSI and the second CSI overlap, performs control to transmit both or one of the first CSI and the second CSI.
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公开(公告)号：US10651915B2
公开(公告)日：2020-05-12
申请号：US16482866
申请日：2018-02-02
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Satoshi Nagata , Chongning Na , Huiling Li , Huiling Jiang , Yuichi Kakishima
Abstract: The present invention is designed to suitably mitigate the decrease in communication throughput even when type-II feedback is used. According to one aspect of the present invention, a user terminal has a control section that determines a beam pattern that shows a fixed set of beams, and determines at least one beam that is not included in the beam pattern; and a transmission section that transmits feedback information related to the beam pattern and the at least one beam that is determined.
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