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公开(公告)号：US20170070377A1
公开(公告)日：2017-03-09
申请号：US15123373
申请日：2015-02-27
Applicant: NTT DOCOMO, INC.
Inventor： Mamoru Sawahashi , Teruo Kawamura , Yoshihisa Kishiyama
IPC: H04L27/26
CPC classification number: H04L27/265 , H04J11/004 , H04L1/0048 , H04L1/005 , H04L25/03305 , H04L27/2602 , H04L27/2636 , H04L27/3488
Abstract: A user terminal with a transmission processing section that generates an SC-FDMA (Single Carrier Frequency Division Multiple Access) signal by blocking symbols that are arranged in a given time region at a symbol rate equal to or lower than a Nyquist rate. The transmission processing section converts the blocks into symbols that are multiplexed in a high density, in block units, in the time domain, by allowing an overlap between the symbols in the blocks. The user terminal also includes a transmission section that transmits the SC-FDMA signal to a radio base station to improve uplink throughput.
Abstract translation: 一种具有发送处理部分的用户终端，其通过以等于或低于奈奎斯特速率的符号速率通过以给定时间区域排列的符号来产生SC-FDMA（单载波频分多址）信号。 发送处理部通过允许块中的符号之间的重叠，将块转换为以时间域为单位以高密度多路复用的符号。 用户终端还包括将SC-FDMA信号发送到无线电基站以提高上行链路吞吐量的传输部分。
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2.发明授权Base station apparatus, mobile station, radio communication system, and communication control method 有权基站装置，移动台，无线通信系统和通信控制方法公开(公告)号：US08780851B2
公开(公告)日：2014-07-15
申请号：US13748320
申请日：2013-01-23
Applicant: NTT DoCoMo, Inc.
Inventor： Daisuke Nishikawa , Hiroyuki Ishii , Teruo Kawamura , Kenichi Higuchi
IPC: G01R31/08 , H04W4/00 , H04L5/14 , H04J1/00 , G06F11/00 , G08C15/00 , H04J1/16 , H04W72/04 , H04W72/08 , H04L5/00
CPC classification number: H04W72/0413 , H04L5/0007 , H04L5/0048 , H04W72/08
Abstract: In a radio communication system including a mobile station and a base station apparatus for communicating with the mobile station according to a SC-FDMA scheme in uplink, the mobile station includes a transmitting unit configured to transmit at least one of a first signal and a second signal; and a Sounding RS transmitting unit configured to determine a transmission band for a Sounding Reference Signal (Sounding RS) based on mapping information of at least one of the first signal and the second signal.
Abstract translation: 在包括移动站和用于在上行链路中根据SC-FDMA方案与移动站进行通信的基站装置的无线通信系统中，移动站包括发送单元，被配置为发送第一信号和第二信号中的至少一个 信号; 以及Sounding RS发送单元，被配置为基于所述第一信号和所述第二信号中的至少一个的映射信息来确定所述探测参考信号（Sounding RS）的发送频带。
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3.发明申请MOBILE STATION, BASE STATION, UPLINK TRANSMISSION METHOD, AND DOWNLINK TRANSMISSION METHOD 审中-公开移动站，基站，上行链路传输方法和下行链路传输方法公开(公告)号：US20130223413A1
公开(公告)日：2013-08-29
申请号：US13856869
申请日：2013-04-04
Applicant: NTT DOCOMO, INC.
Inventor： Teruo Kawamura , Yoshihisa Kishiyama , Kenichi Higuchi , Mamoru Sawahashi
IPC: H04W72/04
CPC classification number: H04W72/0446 , H04L1/0026 , H04L1/0079 , H04L1/1671 , H04L5/006 , H04L25/0228 , H04L27/2647
Abstract: A mobile station includes a channel quality estimation unit configured to estimate downlink channel quality based on a reference signal from a base station and to output the estimated downlink channel quality as channel estimation information; an acknowledgement information determining unit configured to determine whether a downlink data channel from the base station is correctly received and to output the determination result as acknowledgement information; and an acknowledgement information prioritizing unit configured to cause the acknowledgement information to be preferentially transmitted to the base station if transmission timings of the channel estimation information and the acknowledgement information coincide.
Abstract translation: 移动站包括：信道质量估计单元，被配置为基于来自基站的参考信号估计下行链路信道质量，并将所估计的下行链路信道质量作为信道估计信息输出; 确认信息确定单元，被配置为确定来自所述基站的下行链路数据信道是否被正确接收，并将所述确定结果输出为确认信息; 以及确认信息优先化单元，被配置为如果所述信道估计信息和所述确认信息的发送定时一致，则使所述确认信息优先地发送到所述基站。
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4.发明授权公开(公告)号：US09137789B2
公开(公告)日：2015-09-15
申请号：US14636597
申请日：2015-03-03
Applicant: NTT DOCOMO, INC.
Inventor： Yoshihisa Kishiyama , Teruo Kawamura , Daisuke Nishikawa
CPC classification number: H04W72/0413 , H04L5/0007 , H04L5/001 , H04L5/0053 , H04W28/04 , H04W52/34 , H04W52/367
Abstract: To suppress and minimize changes from the method of transmitting an uplink control information in the LTE system, while supporting increases in the system band and increases in the transmission layer when there is a PUSCH signal transmitted in the same subframe, provided is a configuration for generating a UCI signal for a base station apparatus (20) in a mobile communication system having a system band comprised of a plurality of component carriers, multiplexing the UCI signal into a PUSCH signal transmitted in the same subframe as the UCI signal in a user specific component carrier used in transmission of a PUCCH signal, and transmitting the PUSCH signal into which the UCI signal is multiplexed to the base station apparatus (20).
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5.发明申请BASE STATION APPARATUS AND METHOD FOR IMPROVING CHANNEL ESTIMATION ACCURACY IN UPLINK 审中-公开用于提高上行链路信道估计精度的基站装置和方法公开(公告)号：US20140016599A1
公开(公告)日：2014-01-16
申请号：US14018103
申请日：2013-09-04
Applicant: NTT DOCOMO, INC.
Inventor： Teruo Kawamura , Yoshihisa Kishiyama , Mamoru Sawahashi
IPC: H04W72/04
CPC classification number: H04W72/04 , H04L5/0048 , H04L5/0069 , H04L5/0073 , H04W16/10 , H04W92/20
Abstract: A base station apparatus includes a communication unit configured to communicate with base stations of a plurality of adjacent cells; a management unit configured to manage frequency bands for use in the adjacent cells; and a determination unit configured to determine instruction contents according to status of use of the frequency bands. The instruction contents are reported to all or a part of the adjacent cells via the communication unit. The instruction contents specify: a type of a pilot channel transmitted by a user residing in an adjacent cell; whether pilot channels of each user are code-division multiplexed or not; and whether pilot channels of each user are frequency-division multiplexed or not, and the like.
Abstract translation: 基站装置包括：通信单元，被配置为与多个相邻小区的基站进行通信; 管理单元，被配置为管理在所述相邻小区中使用的频带; 以及确定单元，被配置为根据所述频带的使用状态来确定指令内容。 通过通信单元将指令内容报告给相邻小区的全部或一部分。 指令内容指定：由驻留在相邻小区中的用户发送的导频信道的类型; 每个用户的导频信道是否被码分多路复用; 以及每个用户的导频信道是否被频分多路复用等。
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Patent Agency Ranking
公开(公告)号：US20170012687A1
公开(公告)日：2017-01-12
申请号：US15122003
申请日：2015-02-27
Applicant: NTT DOCOMO, INC.
Inventor： Mamoru Sawahashi , Teruo Kawamura , Yoshihisa Kishiyama
CPC classification number: H04B7/068 , H04B7/0456 , H04B7/0617 , H04B7/0667 , H04L25/03006
Abstract: A radio base station with a transmission processing section that converts a symbol allocated at a higher symbol rate than a Nyquist rate in a given time domain and/or frequency domain into a symbol allocated at a symbol rate of the Nyquist rate or less in the given time domain and/or frequency domain to generate an OFDMA (Orthogonal Frequency Division Multiple Access) signal for each of a plurality of antennas. The radio base station also includes a transmission section that transmits the 01-DMA signal of each of the plurality of antennas to a user terminal, where the transmission processing section applies transmit diversity with the plurality of antennas to the symbol allocated at the higher symbol rate to improve throughput in a radio communication system using transmit diversity.
Abstract translation: 一种具有传输处理部分的无线电基站，其将在给定时域和/或频域中以比奈奎斯特速率更高的符号速率分配的符号转换为在给定的奈奎斯特率或更低的符号率下分配的符号 时域和/或频域以产生用于多个天线中的每一个的OFDMA（正交频分多址）信号。 无线基站还包括发送部，其将多个天线中的每一个的01-DMA信号发送到用户终端，其中发送处理部分将具有多个天线的发射分集应用于以较高符号率分配的符号 以提高使用发射分集的无线电通信系统中的吞吐量。
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公开(公告)号：US08873499B2
公开(公告)日：2014-10-28
申请号：US14015712
申请日：2013-08-30
Applicant: NTT DoCoMo, Inc.
Inventor： Teruo Kawamura , Kenichi Higuchi , Mamoru Sawahashi
IPC: H04W4/00 , H04J11/00 , G01R31/08 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26 , H04L5/00 , H04W72/08 , H04J13/00 , H04L1/16
CPC classification number: H04W72/08 , H04J13/0059 , H04L1/0026 , H04L1/0081 , H04L1/1671 , H04L5/0007 , H04L5/0053 , H04L5/006 , H04L5/0064 , H04L5/0091
Abstract: A user apparatus generates an uplink control channel including at least one of acknowledgement information and channel condition information on an downlink, and transmits the uplink control channel in a predefined dedicated band if no resource is assigned to transmit an uplink data channel. The uplink control channel includes multiple unit block sequences resulting from multiplication of the same factor with all chips of a CAZAC code sequence for the user apparatus.
Abstract translation: 用户装置生成包括下行链路中的确认信息和信道条件信息中的至少一个的上行链路控制信道，如果没有分配资源来发送上行链路数据信道，则将上行链路控制信道发送到规定的专用频带。 上行链路控制信道包括由相同因子与用户装置的CAZAC码序列的所有码片相乘而产生的多个单位块序列。
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公开(公告)号：US20140003398A1
公开(公告)日：2014-01-02
申请号：US14015712
申请日：2013-08-30
Applicant: NTT DOCOMO, INC.
Inventor： Teruo Kawamura , Kenichi Higuchi , Mamoru Sawahashi
IPC: H04W72/08
CPC classification number: H04W72/08 , H04J13/0059 , H04L1/0026 , H04L1/0081 , H04L1/1671 , H04L5/0007 , H04L5/0053 , H04L5/006 , H04L5/0064 , H04L5/0091
Abstract: A user apparatus generates an uplink control channel including at least one of acknowledgement information and channel condition information on an downlink, and transmits the uplink control channel in a predefined dedicated band if no resource is assigned to transmit an uplink data channel. The uplink control channel includes multiple unit block sequences resulting from multiplication of the same factor with all chips of a CAZAC code sequence for the user apparatus.
Abstract translation: 用户装置生成包括下行链路中的确认信息和信道条件信息中的至少一个的上行链路控制信道，如果没有分配资源来发送上行链路数据信道，则将上行链路控制信道发送到规定的专用频带。 上行链路控制信道包括由相同因子与用户装置的CAZAC码序列的所有码片相乘而产生的多个单位块序列。
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公开(公告)号：US10177887B2
公开(公告)日：2019-01-08
申请号：US15121935
申请日：2015-02-27
Applicant: NTT DOCOMO, INC.
Inventor： Mamoru Sawahashi , Teruo Kawamura , Yoshihisa Kishiyama
Abstract: A radio base station that communicates with a user terminal, and has a control section that executes control so that signals are time-division-multiplexed over a first radio resource region where symbols are multiplexed at a rate equal to or below a Nyquist rate and a second radio resource region where symbols are multiplexed at a faster rate than the Nyquist rate. The radio base station also includes a transmission section that transmits the signals that are time-division-multiplexed in the first radio resource region and the second radio resource region, to the user terminal to reduce the interference against predetermined signals in a radio communication system in which Faster-Than-Nyquist (FTN) is used.
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公开(公告)号：US20160381583A1
公开(公告)日：2016-12-29
申请号：US15121693
申请日：2015-02-27
Applicant: NTT DOCOMO, INC.
Inventor： Mamoru Sawahashi , Teruo Kawamura , Yoshihisa Kishiyama
CPC classification number: H04W24/08 , H04B7/0413 , H04B7/0456 , H04B7/0617 , H04L5/14 , H04W72/0446
Abstract: The present invention is designed to reduce the overhead of reference signals for measuring CSI in high-order MIMO multiplexing technique. A radio base station is used in a radio communications system of a frequency division duplexing (FDD) scheme, and has a receiving section that receives reference signals for measuring time division duplex (TDD) channel state information, transmitted from a plurality of antennas provided in a user terminal, a measurement section that measures the channel state information, in a plurality of receiving antennas, by using the reference signals, a generation/selection section that generates an optimal precoding vector from the channel state information measured in each receiving antenna, or selects the optimal precoding vector from a set of precoding vectors that is defined in advance, and a transmission section that transmits a physical downlink shared channel, in MIMO multiplexing transmission, by using the precoding vector selected in the generation/selection section.
Abstract translation: 本发明旨在降低用于在高阶MIMO复用技术中测量CSI的参考信号的开销。 无线电基站用于频分双工（FDD）方案的无线电通信系统中，并具有一个接收部分，该接收部分接收用于测量时分双工（TDD）信道状态信息的参考信号， 用户终端，通过使用参考信号测量多个接收天线中的信道状态信息的测量部分;生成/选择部分，其从在每个接收天线中测量的信道状态信息生成最佳预编码矢量，或者 从MIMO生成/选择部中选择的预编码向量，在MIMO复用传输中，从预先定义的一组预编码矢量中选择最优预编码矢量，以及发送物理下行链路共享信道的发送部。
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