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    • 31. 发明授权
    • Base station apparatus, mobile station apparatus and transmission power control method
    • 基站装置,移动台装置及发射功率控制方法
    • US08787261B2
    • 2014-07-22
    • US13498918
    • 2010-09-22
    • Hidekazu TaokaYuichi Kakishima
    • Hidekazu TaokaYuichi Kakishima
    • H04W4/00
    • H04B7/0617H04B7/0434H04B7/0639H04B7/0652
    • To suppress deterioration of throughput characteristics in the entire system even when a plurality of transmission antennas is placed in an indoor environment, a base station apparatus (eNode B) is provided with a power control matrix generating section (508b) that generates a power control matrix (Sx) reflecting average reception power of each of transmission signals from a plurality of transmission antennas (TX#1 to TX#NTX), a codebook update section (508c) that updates a codebook which beforehand defines a plurality of precoding weights corresponding to the power control matrix (Sx), a precoding weight selecting section (508d) that selects precoding weights that maximize throughput or reception SINR obtained after combining the transmission signals from the updated codebook, and a precoding multiplying section (transmission power control section) (507) that controls transmission power of each of the transmission signals corresponding to the selected precoding weights.
    • 为了抑制整个系统的吞吐量特性的恶化,即使在多个发送天线被放置在室内环境中的情况下,基站装置(eNode B)设置有功率控制矩阵生成部(508b),其生成功率控制矩阵 (TX#1〜TX#NTX)的每个发送信号的平均接收功率的反映的平均接收功率(Sx);更新预先定义与第一发送天线对应的多个预编码权重的码本的码本更新部(508c) 功率控制矩阵(Sx),预选编码权重选择部(508d),其选择使来自更新后的码本的发送信号合成后的吞吐量或接收SINR最大化的预编码权重,以及预编码乘法部(发送功率控制部) 其控制与所选择的预编码权重相对应的每个传输信号的传输功率。
    • 32. 发明授权
    • Base station apparatus and information feedback method
    • 基站装置和信息反馈方法
    • US08780839B2
    • 2014-07-15
    • US13378678
    • 2010-06-23
    • Hidekazu TaokaYuichi Kakishima
    • Hidekazu TaokaYuichi Kakishima
    • H04W4/00H04W72/04
    • H04W72/0413H04B7/0639H04L1/0025H04L1/0028H04L5/001H04L25/03929H04L25/03949
    • To suitably transmit feedback information for rank adaptation and precoding in uplink MIMO transmission to a user apparatus as feedback, a base station apparatus (200) is characterized by having a precoding weight/rank number selecting section (232) that determines rank information associated with the number of layers of spatial multiplexing in uplink, while determining a control amount of a transmission phase and/or transmission amplitude used in weighting for transmission antennas of a user apparatus, and transmission/reception sections (206a), (206b) that transmit the rank information determined in the precoding weight/rank number selecting section (232) to a mobile station (100) using an RRC signal, while transmitting the control amount to the mobile station (100) using a control channel signal.
    • 为了将上行MIMO传输中的秩自适应和预编码的反馈信息适当地发送给用户装置作为反馈,基站装置(200)的特征在于具有预编码权重/秩号选择部分(232),其确定与 在确定用于用户装置的发送天线的加权中使用的发送相位和/或发送振幅的控制量的情况下,上行链路中的空间复用的层数以及发送等级的发送/接收部分(206a),(206b) 在使用控制信道信号向移动台(100)发送控制量的同时,使用RRC信号在预编码权重/秩序选择部(232)中向移动台(100)确定的信息。
    • 36. 发明申请
    • DATA TRANSMITTING METHOD, BASE STATION APPARATUS AND MOBILE STATION APPARATUS
    • 数据传输方法,基站装置和移动站装置
    • US20130083757A1
    • 2013-04-04
    • US13643467
    • 2011-04-21
    • Yuichi KakishimaHidekazu Taoka
    • Yuichi KakishimaHidekazu Taoka
    • H04B7/04
    • H04B7/0413H04B7/024H04B7/0417H04B7/063H04B7/0639H04L5/0023H04L5/0051H04L5/0057H04L25/0204H04L25/0228H04L25/03343H04L2025/03414H04L2025/03426H04L2025/03777H04W28/18H04W48/08H04W48/16H04W88/02H04W88/08
    • A data rate in MIMO transmission is increased to a maximum even when the number of transmitting antennas of a mobile station apparatus is different from the number of transmitting antennas of the mobile station apparatus supported by a base station apparatus. The base station apparatus (eNodeB) reports the maximum number of supported antennas of the mobile station apparatus (UE) supported by the base station apparatus (eNodeB) to the mobile station apparatus (UE) (ST11). The mobile station apparatus (UE) compares the number of supported antennas with the number of transmitting antennas of the mobile station apparatus (UE), selects the smaller number of antennas as a number of virtual antennas (ST12), and reports the number of virtual antennas to the base station apparatus (eNodeB) (ST13). The base station apparatus (eNodeB) instructs the mobile station apparatus to transmit a data channel signal in accordance with the number of virtual antennas (ST15). The mobile station apparatus (UE) transmits a data channel signal to the base station apparatus (eNodeB) in accordance with the number of virtual antennas (ST20).
    • 即使移动站装置的发送天线的数量与基站装置支持的移动站装置的发送天线的数量不同,MIMO传输中的数据速率也增加到最大。 基站装置(eNodeB)向移动台装置(UE)报告由基站装置(eNodeB)支持的移动台装置(UE)的支持天线的最大数量(ST11)。 移动站装置(UE)将支持天线的数量与移动台装置(UE)的发送天线数进行比较,选择较小数量的天线作为虚拟天线数(ST12),并且报告虚拟 天线到基站装置(eNodeB)(ST13)。 基站装置(eNodeB)指示移动站装置根据虚拟天线的数量发送数据信道信号(ST15)。 移动站装置(UE)根据虚拟天线的数量向基站装置(eNodeB)发送数据信道信号(ST20)。
    • 38. 发明申请
    • BASE STATION APPARATUS, MOBILE STATION APPARATUS AND TRANSMISSION POWER CONTROL METHOD
    • 基站设备,移动站设备和传输功率控制方法
    • US20120195264A1
    • 2012-08-02
    • US13498918
    • 2010-09-22
    • Hidekazu TaokaYuichi Kakishima
    • Hidekazu TaokaYuichi Kakishima
    • H04W52/24H04W88/02H04W88/08
    • H04B7/0617H04B7/0434H04B7/0639H04B7/0652
    • To suppress deterioration of throughput characteristics in the entire system even when a plurality of transmission antennas is placed in an indoor environment, a base station apparatus (eNode B) is provided with a power control matrix generating section (508b) that generates a power control matrix (Sx) reflecting average reception power of each of transmission signals from a plurality of transmission antennas (TX#1 to TX#NTX), a codebook update section (508c) that updates a codebook which beforehand defines a plurality of precoding weights corresponding to the power control matrix (Sx), a precoding weight selecting section (508d) that selects precoding weights that maximize throughput or reception SINR obtained after combining the transmission signals from the updated codebook, and a precoding multiplying section (transmission power control section) (507) that controls transmission power of each of the transmission signals corresponding to the selected precoding weights.
    • 为了抑制整个系统的吞吐量特性的恶化,即使在多个发送天线被放置在室内环境中的情况下,基站装置(eNode B)设置有功率控制矩阵生成部(508b),其生成功率控制矩阵 (TX#1〜TX#NTX)的每个发送信号的平均接收功率的反映的平均接收功率(Sx);更新预先定义与第一发送天线对应的多个预编码权重的码本的码本更新部(508c) 功率控制矩阵(Sx),预选编码权重选择部(508d),其选择使来自更新后的码本的发送信号合成后的吞吐量或接收SINR最大化的预编码权重,以及预编码乘法部(发送功率控制部) 其控制与所选择的预编码权重相对应的每个传输信号的传输功率。