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    Base station apparatus and radio communication method
    51.
    发明授权
    Base station apparatus and radio communication method 失效
    基站装置和无线通信方法

    公开(公告)号：US06477213B1

    公开(公告)日：2002-11-05

    申请号：US09317614

    申请日：1999-05-25

    申请人： Kenichi Miyoshi ,  Katsuhiko Hiramatsu ,  Ryusuke Kiryu

    发明人： Kenichi Miyoshi ,  Katsuhiko Hiramatsu ,  Ryusuke Kiryu

    IPC分类号： H04B710

    CPC分类号： H04B7/0874 ,  H04B7/0848

    摘要： Antenna received signals 101-1 to 101-n are input to weighting coefficient calculation section 103. Weighting coefficient calculation section 103 determines weighting coefficients so as to eliminate interference using antenna received signals 101-1 to 101-n and known signal and combines them into weighted/combined signal 107. Envelope variation detection section 116 detects variations in the envelope of the weighted/combined signal. Interference mixing time detection section 108 detects the interference mixing time from the output of envelope variation detection section 116. Envelope variation detection sections 117 to 119 detect envelope variations of the received signals. Combination system control section 113 switches switch section 114 so that the received signal with the least envelope variation may be output at the interference mixing time.

    摘要翻译： 天线接收信号101-1至101-n被输入到加权系数计算部分103.加权系数计算部分103确定加权系数以消除使用天线接收信号101-1至101-n的干扰和已知信号，并将它们组合成 加权/组合信号107.包络变化检测部分116检测加权/合成信号的包络线的变化。 干扰混合时间检测部分108从包络变化检测部分116的输出检测干扰混合时间。包络变化检测部分117至119检测接收信号的包络变化。 组合系统控制部分113切换开关部分114，使得可以在干扰混合时间输出具有最小包络线变化的接收信号。

    Wireless communication apparatus, wireless communication system and wireless communication method
    52.
    发明授权
    Wireless communication apparatus, wireless communication system and wireless communication method 有权
    无线通信装置，无线通信系统及无线通信方式

    公开(公告)号：US08588321B2

    公开(公告)日：2013-11-19

    申请号：US12809701

    申请日：2008-10-23

    申请人： Masayuki Hoshino ,  Katsuhiko Hiramatsu ,  Kenichi Miyoshi

    发明人： Masayuki Hoshino ,  Katsuhiko Hiramatsu ,  Kenichi Miyoshi

    IPC分类号： H04K1/10

    CPC分类号： H04B7/0452 ,  H04B7/0417 ,  H04B7/0426 ,  H04B7/0632 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0036 ,  H04W72/08

    摘要： When power scaling is applied to multi-user MIMO, a reduction in transmission rate is suppressed and transmission efficiency is improved. When signals are transmitted through spatial multiplexing from a wireless base station 11 to a plurality of pieces of user equipment 12 and 13, notification of a transmission parameter (MCS) of the distant user equipment (UE-B) 13 is provided as control information to the adjacent user equipment (UE-A) 12. The user equipment 12 calculates, based on the received control information, a reception quality (CQI) after cancellation of a signal serving as an interference signal and destined for the other user equipment 13, and feeds back the calculated result to the wireless base station 11. Based on this feedback, the wireless base station 11 sets a transmission parameter (MCS) of each piece of the user equipment 12 and 13 using the CQI after the cancellation, and transmits signals intended for respective users through spatial multiplexing after performing power distribution between the users by power scaling.

    摘要翻译： 当对多用户MIMO进行功率缩放时，传输速率的降低被抑制并且传输效率提高。 当通过空中复用将信号从无线基站11发送到多个用户设备12和13时，提供远程用户设备（UE-B）13的传输参数（MCS）的通知作为控制信息 相邻用户设备（UE-A）12。用户设备12基于接收到的控制信息计算在用作干扰信号并发往另一用户设备13的信号的消除之后的接收质量（CQI），以及 将计算结果反馈给无线基站11.基于该反馈，无线基站11在消除之后使用CQI来设置用户设备12和13的每一段的传输参数（MCS），并发送预期的信号 通过功率缩放在用户进行功率分配之后通过空间复用对各个用户进行。

    Base station apparatus, mobile apparatus, and communication method
    53.
    发明授权
    Base station apparatus, mobile apparatus, and communication method 有权
    基站装置，移动装置和通信方法

    公开(公告)号：US08467723B2

    公开(公告)日：2013-06-18

    申请号：US13585621

    申请日：2012-08-14

    申请人： Yoshiko Saito ,  Takashi Aramaki ,  Kenichi Miyoshi ,  Katsuhiko Hiramatsu ,  Hidetoshi Suzuki ,  Jun Hirano

    发明人： Yoshiko Saito ,  Takashi Aramaki ,  Kenichi Miyoshi ,  Katsuhiko Hiramatsu ,  Hidetoshi Suzuki ,  Jun Hirano

    IPC分类号： H04Q7/20

    CPC分类号： H04W16/26 ,  H04B7/15507 ,  H04W16/24 ,  H04W48/08 ,  H04W84/047

    摘要： A mobile communication system includes a plurality of RAT (Radio Access Technology) and can eliminate the need of a control channel for reporting RAT information. An LTE relay station has a cover area identical to a cover area owned by a WLAN host station and relays/transmits the signal received from an LTE base station to a mobile station in the cover area of the LTE relay station. The LTE relay station adds to the signal received from the LTE base station, one of the offsets: a frequency offset, a time offset, and a power offset as information indicating that the mobile station which receives a relay signal from the local station is located in the cover area of WLAN and transmits the signal after offset addition to the mobile station located in the cover area of the LTE relay station (i.e., the cover area of WLAN).

    摘要翻译： 移动通信系统包括多个RAT（无线接入技术），并且可以消除用于报告RAT信息的控制信道的需要。 LTE中继站具有与WLAN主站所拥有的覆盖区域相同的覆盖区域，并且将从LTE基站接收的信号中继/发送到LTE中继站的覆盖区域中的移动站。 LTE中继站将从LTE基站接收到的信号添加到偏移中的一个：频偏，时间偏移和功率偏移，作为指示从本地站接收到中继信号的移动站位于 在WLAN的覆盖区域中，并且将偏移相加后的信号发送到位于LTE中继站的覆盖区域（即，WLAN的覆盖区域）的移动站。

    Radio communication system, radio communication device, and channel correlation matrix decision method
    57.
    发明授权
    Radio communication system, radio communication device, and channel correlation matrix decision method 有权
    无线电通信系统，无线电通信设备和信道相关矩阵决策方法

    公开(公告)号：US08081702B2

    公开(公告)日：2011-12-20

    申请号：US12280677

    申请日：2007-02-28

    申请人： Masayuki Hoshino ,  Kenichi Miyoshi ,  Yasuaki Yuda ,  Katsuhiko Hiramatsu ,  Ryohei Kimura

    发明人： Masayuki Hoshino ,  Kenichi Miyoshi ,  Yasuaki Yuda ,  Katsuhiko Hiramatsu ,  Ryohei Kimura

    IPC分类号： H04B7/02

    CPC分类号： H04B7/0626 ,  H04B7/0417 ,  H04B7/0434 ,  H04B7/063 ,  H04B7/0689

    摘要： It is possible to prevent lowering of a throughput of a radio communication system even when propagation path environments of an uplink line and downlink line are asymmetric. A maximum proper value calculation unit (115) calculates a maximum proper value from a channel matrix. A maximum proper value comparison unit (116) compares the maximum proper value with a maximum proper value of the downlink line reported separately from a base station. According to the comparison result obtained by the maximum proper value comparison unit (116), a proper mode initiative instruction unit (117) decides to pass the proper mode initiative to a communication partner or to the local device. When the initiative is to be passed to the local device, this fact is reported to a proper bam correction unit (118). When the proper beam correction unit (118) gets the proper mode initiative, the proper beam correction unit (118) corrects the correlation matrix by using the proper values of both of the downlink line and the uplink line and instructs a directivity forming unit (103) to form a proper beam according to the correlation matrix after the correction.

    摘要翻译： 即使上行链路和下行链路的传播路径环境不对称，也可以防止无线通信系统的吞吐量的降低。 最大适当值计算单元（115）从信道矩阵计算最大适当值。 最大适当值比较单元（116）将最大适当值与从基站分开报告的下行线路的最大适当值进行比较。 根据由最大适当值比较单元（116）获得的比较结果，正确的模式主动指示单元（117）决定将适当的模式主动通过通信对方或本地设备。 当该举措传递给本地设备时，这一事实报告给适当的巴姆纠正单位（118）。 当正确的光束校正单元（118）获得适当的模式主动时，适当的光束校正单元（118）通过使用下行链路线路和上行线路两者的适当值来校正相关矩阵，并且指示方向性形成单元（103 ）根据校正后的相关矩阵形成适当的波束。

    WIRELESS RECEIVER AND FEEDBACK METHOD
    58.
    发明申请
    WIRELESS RECEIVER AND FEEDBACK METHOD 审中-公开
    无线接收机和反馈方法

    公开(公告)号：US20110096877A1

    公开(公告)日：2011-04-28

    申请号：US12920030

    申请日：2009-03-05

    申请人： Ryohei Kimura ,  Kenichi Miyoshi ,  Katsuhiko Hiramatsu

    发明人： Ryohei Kimura ,  Kenichi Miyoshi ,  Katsuhiko Hiramatsu

    IPC分类号： H04L1/02

    CPC分类号： H04L1/003 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/06 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0248 ,  H04W72/0413 ,  H04W72/085

    摘要： Disclosed is a wireless receiver and feedback method for reducing the amount of CQI feedback in a MIMO channel. A channel estimation unit (103) uses a received pilot signal to estimate the channel matrix for each RB between respective transceiver antennas, and then performs eigenvalue decomposition of the estimated channel matrix to find eigenvalues and eigenvectors. A feedback data generator (104) is provided with a feedback bit table that correlates the number of quantized bits for the averaged CQI to be transmitted for each eigenvalue and the number of quantized bits for the CQI in each RB, and then reduces the number of quantized bits for the averaged CQI Xk commensurate with the magnitude of the eigenvalue number k. The feedback data generator (104) averages eigenvalues found by the channel estimator (103) for each RB, converts the averaged eigenvalue to a CQI for each eigenvalue number, and generates feedback data from the CQI for each eigenvalue with the number of quantized bits according to the feedback table.

    摘要翻译： 公开了一种用于减少MIMO信道中的CQI反馈量的无线接收机和反馈方法。 信道估计单元（103）使用接收到的导频信号来估计各个收发天线之间的每个RB的信道矩阵，然后执行所估计的信道矩阵的特征值分解以找到特征值和特征向量。 反馈数据生成器（104）具有将每个特征值要发送的平均CQI的量化比特数与每个RB中的CQI的量化比特数相关联的反馈比特表，然后减少 用于与特征值k的大小相称的平均CQI Xk的量化比特。 反馈数据生成器（104）对于每个RB对由信道估计器（103）找到的特征值进行平均，将每个特征值数的平均特征值转换为CQI，并且针对每个具有量化比特数的特征值的CQI生成反馈数据， 到反馈表。

    Mobile communication system
    60.
    发明授权
    Mobile communication system 有权
    移动通信系统

    公开(公告)号：US07573838B2

    公开(公告)日：2009-08-11

    申请号：US11049728

    申请日：2005-02-04

    申请人： Kenichi Miyoshi ,  Katsuhiko Hiramatsu ,  Takahisa Aoyama ,  Atsushi Sumasu ,  Osamu Kato

    发明人： Kenichi Miyoshi ,  Katsuhiko Hiramatsu ,  Takahisa Aoyama ,  Atsushi Sumasu ,  Osamu Kato

    IPC分类号： H04B7/005 ,  G08C17/00

    CPC分类号： H04W28/22 ,  H04W24/00 ,  H04W52/0229 ,  H04W52/0245 ,  H04W52/0258 ,  H04W52/24 ,  H04W52/26 ,  H04W72/12 ,  H04W72/1284 ,  Y02D70/00

    摘要： A mobile communication system which is capable of, when carrying out mobile communication using a shared channel, increasing in efficiency of transmission timing of the data transmission rate request value to prevent wasteful power consumption and hence reduce power consumption. The mobile station apparatus of the mobile communication system measures CIR of the received signal from the base station apparatus at the CIR measuring section, and decides the data transmission rate request value corresponding to the measured CIR value at the rate request value deciding section. Also, it detects an error of the received signal at the CRC section, and, when no error is found, calculates a difference between the average data transmission rate from the base station apparatus and the data transmission request value at the rate request value transmission controlling section. Then, it transmits the data transmission rate request value to the base station apparatus only when the obtained difference is larger than a threshold value.

    摘要翻译： 能够在使用共享信道进行移动通信时能够提高数据传输速率请求值的发送定时的效率的移动通信系统，以防止浪费的功率消耗并因此降低功耗。 移动通信系统的移动站装置在CIR测量部分测量来自基站装置的接收信号的CIR，并且确定与速率请求值确定部分所测量的CIR值对应的数据传输速率请求值。 此外，它检测在CRC部分的接收信号的错误，并且当没有发现错误时，计算来自基站装置的平均数据传输速率与速率请求值传输控制的数据传输请求值之间的差异 部分。 然后，只有当获得的差值大于阈值时，才向基站装置发送数据传输速率请求值。