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61.发明申请公开(公告)号：US20180124752A1
公开(公告)日：2018-05-03
申请号：US15572807
申请日：2016-05-13
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Hideyuki Moroga , Satoshi Nagata , Qin Mu , Liu Liu
IPC: H04W72/04
CPC classification number: H04W72/042 , H04W72/04 , H04W72/0453
Abstract: The present invention is designed to reduce the decrease of throughput in communication by user terminals that are limited to using a partial narrow band in a system band as a band for their use. According to one aspect of the present invention, a user terminal, in which the band to use is limited to a partial narrow band in a system band, has a control section that selects a predetermined narrow band set that is formed with a plurality of narrow bands, and a receiving section that receives a downlink signal in a narrow band that is included in the predetermined narrow band set, and the control section selects the predetermined narrow band set from a plurality of narrow band sets, to which different frequency shifts are applied.
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62.发明授权公开(公告)号：US09832764B2
公开(公告)日：2017-11-28
申请号：US14431329
申请日：2013-07-31
Applicant: NTT DOCOMO, INC.
Inventor： Kazuaki Takeda , Qin Mu , Liu Liu , Lan Chen
IPC: H04W4/00 , H04B7/208 , H04B7/212 , H04W72/04 , H04L1/00 , H04B7/0452 , H04L27/26 , H04L5/00 , H04W88/02 , H04W88/08
CPC classification number: H04W72/042 , H04B7/0452 , H04L1/0046 , H04L5/0053 , H04L27/2643 , H04W88/02 , H04W88/08
Abstract: The present invention is designed to make it possible to adequately form the search space candidates to be used in the blind decoding of downlink control information when the radio resource region for downlink control channels is expanded. The radio base station of the present invention is a radio base station that transmits downlink control information for a user terminal by using an enhanced downlink control channel that is frequency-division-multiplexed with a downlink shared data channel, and has a configuring section that configures, for the user terminal, a plurality of resource sets that are each formed by including a plurality of resource blocks allocated to the enhanced downlink control channel, and a determining section that determines enhanced control channel elements to constitute a plurality of search space candidates such that the plurality of search space candidates of each resource set are all placed in different resource blocks.
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公开(公告)号：US09787435B2
公开(公告)日：2017-10-10
申请号：US14906309
申请日：2014-06-20
Applicant: NTT DOCOMO, INC.
Inventor： Shimpei Yasukawa , Qin Mu , Liu Liu , Lan Chen
CPC classification number: H04L1/0061 , H03M13/09 , H04L1/0046 , H04L1/0072 , H04L1/0079 , H04L1/08 , H04W72/042
Abstract: A base station is configured to transmit control information to a terminal device in a radio communication system, wherein an error detection code that is masked by predetermined identification information is attached to the control information, the base station including a generator configured to generate, upon detecting that a length of first information that is to be masked by the predetermined identification information to generate the error detection code does not correspond to a length of the predetermined identification information, second information that corresponds to the length of the predetermined identification information; and an error detection code generator configured to generate, upon detecting that the second information is generated, the error detection code in which the second information is masked by the predetermined identification information.
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公开(公告)号：US09667361B2
公开(公告)日：2017-05-30
申请号：US14763611
申请日：2014-01-20
Applicant: NTT DOCOMO, INC.
Inventor： Satoshi Nagata , Qin Mu , Liu Liu , Yu Jiang , Lan Chen
CPC classification number: H04B17/309 , H04L1/00 , H04L1/0003 , H04L1/0009 , H04L1/1812 , H04L27/34 , H04W72/0413
Abstract: The present invention is designed to make possible adaptive modulation and coding (AMC) that supports high-order modulation schemes. The adaptive modulation and coding method of the present invention is an adaptive modulation and coding method for a downlink shared channel, and includes, in a user terminal, the steps of measuring channel quality based on a reference signal from the radio base station, acquiring a channel quality indicator to indicate the modulation scheme and the coding rate that are applicable to the downlink shared channel in the channel quality, from a table in which channel quality indicators, modulation schemes and coding rates are associated with each other, and transmitting the channel quality indicator to the radio base station, and the modulation schemes include a modulation scheme of a higher order than 64 QAM.
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65.发明申请BASE STATION, TRANSMISSION METHOD, MOBILE STATION AND RETRANSMISSION CONTROL METHOD 审中-公开基站，传输方法，移动站和恢复控制方法公开(公告)号：US20170055249A1
公开(公告)日：2017-02-23
申请号：US15113966
申请日：2014-12-09
Applicant: NTT DOCOMO, INC.
Inventor： Shimpei Yasukawa , Qin Mu , Liu Liu , Huiling Jiang
CPC classification number: H04W72/048 , H04L5/0053 , H04L5/0055 , H04L5/0082 , H04L5/0094 , H04W4/70 , H04W72/0406 , H04W72/0413 , H04W72/042
Abstract: The present invention aims at reducing or avoiding PUCCH conflict among terminals if a PDSCH and a PDCCH for indicating assignment information required to receive the PDSCH are transmitted in different subframes. One aspect of the present invention relates to a base station for transmitting a physical downlink shared channel and a physical downlink control channel in different subframes, wherein the physical downlink control channel indicates assignment information required to receive the physical downlink shared channel, comprising: a resource assignment information storage unit configured to store resource assignment information for a physical uplink control channel or resource assignment information for a physical downlink control channel; a resource assignment unit configured to assign a resource for the physical downlink control channel with reference to the resource assignment information storage unit such that no conflict arises among physical uplink control channels from multiple mobile stations; and a transmission unit configured to transmit the physical downlink control channel and the physical downlink shared channel.
Abstract translation: 本发明旨在减少或避免终端之间的PUCCH冲突，如果在不同子帧中发送用于指示接收PDSCH所需的分配信息的PDSCH和PDCCH。 本发明的一个方面涉及用于在不同子帧中发送物理下行链路共享信道和物理下行链路控制信道的基站，其中物理下行链路控制信道指示接收物理下行链路共享信道所需的分配信息，包括：资源 分配信息存储单元，被配置为存储用于物理上行链路控制信道的资源分配信息或者用于物理下行链路控制信道的资源分配信息; 资源分配单元，被配置为参考所述资源分配信息存储单元分配用于所述物理下行链路控制信道的资源，使得来自多个移动站的物理上行链路控制信道之间不产生冲突; 以及发送单元，被配置为发送所述物理下行链路控制信道和所述物理下行链路共享信道。
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Patent Agency Ranking
公开(公告)号：US20170005777A1
公开(公告)日：2017-01-05
申请号：US15114172
申请日：2015-01-23
Applicant: NTT DOCOMO, INC.
Inventor： Tooru Uchino , Kazuki Takeda , Satoshi Nagata , Liu Liu , Qin Mu , Huiling Jiang
CPC classification number: H04L5/1438 , H04L1/1812 , H04L5/001 , H04L5/0028 , H04L5/0092 , H04L5/1469 , H04W72/0413 , H04W72/042 , H04W88/02 , H04W88/08
Abstract: Some techniques are disclosed for determining downlink control information for use in each cell in carrier aggregation using a FDD cell and a TDD cell together. One aspect of the present invention relates to user equipment, comprising: a transmission and reception unit configured to transmit and receive a radio channel to/from a base station via multiple cells configured for carrier aggregation in accordance with a frequency division duplex (FDD) mode and a time division duplex (TDD) mode; a cell management unit configured to manage the multiple cells; and a communication control unit configured to determine whether a duplex mode applied to a primary cell in the multiple cells is either the FDD mode or the TDD mode and receive and demodulate downlink control information compliant with the determined duplex mode for each carrier aggregation implemented cell.
Abstract translation: 公开了一些用于确定使用FDD小区和TDD小区在一起的载波聚合中的每个小区中使用的下行链路控制信息的技术。 本发明的一个方面涉及用户设备，包括：发送和接收单元，被配置为根据频分双工（FDD）模式，经由配置用于载波聚合的多个小区向基站发送无线电信道 和时分双工（TDD）模式; 配置为管理所述多个小区的小区管理单元; 以及通信控制单元，被配置为确定应用于所述多个小区中的主小区的双工模式是FDD模式还是TDD模式，并且针对每个载波聚合实现的小区接收和解调与所确定的双工模式兼容的下行链路控制信息。
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公开(公告)号：US20160316469A1
公开(公告)日：2016-10-27
申请号：US15032654
申请日：2014-10-17
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Huiling Jiang , Liu Liu , Qin Mu
CPC classification number: H04W72/0446 , H04L1/1854 , H04L1/1861 , H04L5/0055 , H04L5/14 , H04W72/0413 , H04W72/042
Abstract: An uplink transmission is carried out adequately even when CA is executed by employing different duplex modes between multiple cells. A user terminal communicates with an FDD cell and a TDD cell that employ carrier aggregation, receives DL signals transmitted from each cell, detects the DL signals received, makes retransmission control decisions, and allocates and feeds back delivery acknowledgement signals in response to each DL signal in a predetermined UL subframe. When aggregating and allocating delivery acknowledgement signals for the DL signal of each cell in an uplink control channel in a UL subframe of the TDD cell, a feedback mechanism makes it possible to allocate the delivery acknowledgement signals to all DL subframes of the FDD cell, and DL signals are detected assuming the number of DL subframes of the FDD cell to be allocated to a UL subframe of the TDD cell does not exceed predetermined value.
Abstract translation: 即使通过在多个小区之间采用不同的双工模式来执行CA，也能够进行上行链路传输。 用户终端与采用载波聚合的FDD小区和TDD小区通信，接收从每个小区发送的DL信号，检测接收的DL信号，进行重发控制决定，并响应于每个DL信号分配并反馈传送确认信号 在预定的UL子帧中。 当在TDD小区的UL子帧中的上行链路控制信道中，为每个小区的DL信号进行聚合和分配递送确认信号时，反馈机制使得可以将递送确认信号分配给FDD小区的所有DL子帧，并且 假设要分配给TDD小区的UL子帧的FDD小区的DL子帧的数量不超过预定值，则检测DL信号。
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公开(公告)号：US11930502B2
公开(公告)日：2024-03-12
申请号：US17189805
申请日：2021-03-02
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Kazuaki Takeda , Satoshi Nagata , Qin Mu , Lihui Wang
IPC: H04W72/12 , H04L5/00 , H04W72/0453 , H04W72/23
CPC classification number: H04W72/23 , H04L5/001 , H04L5/0053 , H04W72/0453
Abstract: A terminal is disclosed including a receiver that monitors downlink control channel candidates in a predetermined frequency bandwidth out of a plurality of frequency bandwidths; and a processor that performs a control to change the predetermined frequency bandwidth in accordance with a predetermined timer. In another aspect, a radio communication method is also disclosed.
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公开(公告)号：US20230075481A1
公开(公告)日：2023-03-09
申请号：US18046017
申请日：2022-10-12
Applicant: NTT DOCOMO,INC.
Inventor： Qin Mu , Liu Liu , Naoto Okubo , Wei Xu , Yong Li , Wenbo Wang
Abstract: A terminal is disclosed including a transmitting unit that transmits, to a base station, a schedule request (SR); and a receiving unit that receives, from the base station, an uplink grant indicating scheduling information for transmitting uplink data, wherein the transmitting unit transmits, to the base station, the uplink data by employing the scheduling information. In other aspects, a base station and a system are also disclosed.
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公开(公告)号：US11516788B2
公开(公告)日：2022-11-29
申请号：US16634376
申请日：2017-07-28
Applicant: NTT DOCOMO, INC.
Inventor： Kazuki Takeda , Satoshi Nagata , Qin Mu , Liu Liu
IPC: H04W72/04
Abstract: To appropriately communicate a control channel even when communication is performed by applying a different control channel configuration from those of legacy LTE systems, one aspect of the terminal includes: a receiving section that receives a downlink control channel; and a processor that determines a number of downlink control channel candidates to be monitored within a slot based on a rule that uses a maximum number of downlink control channel candidates.
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