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公开(公告)号：US08224369B2
公开(公告)日：2012-07-17
申请号：US12432230
申请日：2009-04-29
IPC分类号： H04B7/00
CPC分类号： H04W52/343 , H04B7/0417 , H04B7/0617 , H04B7/0619 , H04W52/346
摘要： A disclosed radio communication apparatus includes a precoding unit, a optimum transmit power calculation unit and a transmission unit. The optimum transmit power calculation unit receives the transmit weight related information from the precoding unit and calculates a transmit power level to optimize an objective function in accordance with an interior point method. The objective function results from addition of a barrier function adjusted with a barrier parameter to an original objective function associated with a constrained optimization problem. The original objective function includes a function of respective channel capacities for individual users derived from the transmit weight related information. The optimum transmit power calculation unit adaptively updates a logarithm of the barrier parameter and uses a gradient obtained through a high-order derivative with the logarithm of the barrier parameter to calculate the transmit power level to optimize the resulting objective function.
摘要翻译： 所公开的无线电通信装置包括预编码单元，最佳发送功率计算单元和发送单元。 最佳发射功率计算单元从预编码单元接收发射权重相关信息，并根据内点方法计算发射功率电平以优化目标函数。 目标函数是由将阻挡参数调整的障碍函数添加到与约束优化问题相关联的原始目标函数中产生的。 原始目标函数包括从发送权重相关信息导出的各个用户的各个信道容量的功能。 最佳发射功率计算单元自适应地更新屏障参数的对数，并使用通过高阶导数获得的梯度与屏障参数的对数来计算发射功率电平以优化所得到的目标函数。
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公开(公告)号：US08095169B2
公开(公告)日：2012-01-10
申请号：US12432174
申请日：2009-04-29
IPC分类号： H04B1/00
CPC分类号： H04W52/346 , H04B7/0417 , H04B7/0452 , H04B7/0617 , H04B7/0619 , H04B7/0691 , H04W52/343
摘要： A disclosed radio communication apparatus includes a preceding unit configured to precode multiple streams, a splitting unit configured to split the precoded streams into two or more stream sets each including one or more streams, a sub power optimization unit configured to execute an iterative transmit power optimization algorithm on each of the split stream sets to determine respective transmit power levels for the individual stream sets, a power optimization unit configured to execute the iterative transmit power optimization algorithm by using the determined transmit power levels as initial values for the iterative transmit power optimization algorithm to determine respective transmit power levels for the individual streams, and a transmission unit configured to transmit radio signals from individual transmit antennas at the determined transmit power levels.
摘要翻译： 所公开的无线电通信装置包括：预配置多个流的前一单元，分配单元，被配置为将预编码流分为两个或更多个流集合，每个流集合包括一个或多个流;子功率优化单元，被配置为执行迭代发射功率优化 分配流集合中的每一个的算法，以确定各个流集合的相应发射功率电平;功率优化单元，被配置为通过使用所确定的发射功率电平作为迭代发射功率优化算法的初始值来执行迭代发射功率优化算法 以确定各个流的各个发射功率电平;以及传输单元，被配置为以确定的发射功率电平从各个发射天线发射无线电信号。
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公开(公告)号：US20090280856A1
公开(公告)日：2009-11-12
申请号：US12432230
申请日：2009-04-29
IPC分类号： H04B7/00
CPC分类号： H04W52/343 , H04B7/0417 , H04B7/0617 , H04B7/0619 , H04W52/346
摘要： A disclosed radio communication apparatus includes a preceding unit, a optimum transmit power calculation unit and a transmission unit. The optimum transmit power calculation unit receives the transmit weight related information from the preceding unit and calculates a transmit power level to optimize an objective function in accordance with an interior point method. The objective function results from addition of a barrier function adjusted with a barrier parameter to an original objective function associated with a constrained optimization problem. The original objective function includes a function of respective channel capacities for individual users derived from the transmit weight related information. The optimum transmit power calculation unit adaptively updates a logarithm of the barrier parameter and uses a gradient obtained through a high-order derivative with the logarithm of the barrier parameter to calculate the transmit power level to optimize the resulting objective function.
摘要翻译： 所公开的无线电通信装置包括前一单元，最佳发送功率计算单元和发送单元。 最佳发射功率计算单元从前一单元接收发射权重相关信息，并根据内点方法计算发射功率电平以优化目标函数。 目标函数是由将阻挡参数调整的障碍函数添加到与约束优化问题相关联的原始目标函数中产生的。 原始目标函数包括从发送权重相关信息导出的各个用户的各个信道容量的功能。 最佳发射功率计算单元自适应地更新屏障参数的对数，并使用通过高阶导数获得的梯度与屏障参数的对数来计算发射功率电平以优化所得到的目标函数。
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公开(公告)号：US20090207931A1
公开(公告)日：2009-08-20
申请号：US12368540
申请日：2009-02-10
IPC分类号： H04B7/02
CPC分类号： H04L25/03343 , H04L27/2621 , H04L2025/03414 , H04L2025/03426
摘要： A wireless communication device that transmits a wireless signal by carrying out linear precoding processing using a plurality of transmission antennas is provided with: a phase pattern control unit for selecting a phase pattern that reduces peak-to-average power ratio; a phase rotation unit for carrying out phase rotation on a modulation signal using the phase pattern selected in the phase pattern control unit; a control signal generation unit for generating a control signal based on the phase pattern selected in the phase pattern control unit; and a preceding unit for carrying out linear precoding processing on output signals from the phase rotation unit and output signals from the control signal generation unit.
摘要翻译： 通过使用多个发送天线进行线性预编码处理来发送无线信号的无线通信装置具有：相位图案控制部，其选择降低峰值与平均功率比的相位图案; 相位旋转单元，用于使用在相位图案控制单元中选择的相位图案对调制信号进行相位旋转; 控制信号生成单元，用于基于在相位图案控制单元中选择的相位图形生成控制信号; 以及用于对来自相位旋转单元的输出信号和来自控制信号生成单元的输出信号进行线性预编码处理的前一单元。
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25.发明授权Radio communication system, centralized station, control station apparatus, radio base station and coordinated transmission method for determining an assignment of cluster patterns 有权无线电通信系统，集中站，控制站装置，无线基站以及用于确定集群模式分配的协调传输方法公开(公告)号：US08787279B2
公开(公告)日：2014-07-22
申请号：US13191645
申请日：2011-07-27
IPC分类号： H04W28/04
摘要： The radio communication system of the present invention is provided with a cluster pattern determining section that determines the assignment of each cluster pattern to each cluster so as to suppress inter-cluster interference with other neighboring clusters less than or equal to a predetermined value, the cluster pattern is defining a directional pattern of which directional beams emitted from the respective radio base stations face each other for each identical frequency block between neighboring sectors in a cluster composed of neighboring cells, the each cluster pattern being in different combinations of directional patterns and frequency blocks.
摘要翻译： 本发明的无线电通信系统具有：群集模式确定部，其确定每个群集模式对每个群集的分配，以便抑制与小于或等于预定值的其他相邻群的簇间干扰;群集 模式定义了从各个无线电基站发射的定向波束对于由相邻小区组成的群集中的相邻扇区之间的每个相同频率块彼此面对的方向模式，每个簇模式处于方向模式和频率块的不同组合 。
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26.发明申请BASE STATION APPARATUS, MOBILE TERMINAL APPARATUS AND COMMUNICATION CONTROL METHOD 有权基站装置，移动终端装置和通信控制方法公开(公告)号：US20130258976A1
公开(公告)日：2013-10-03
申请号：US13877175
申请日：2011-10-03
申请人： Satoshi Nagata , Yusuke Ohwatari , Tetsushi Abe , Nobuhiko Miki
发明人： Satoshi Nagata , Yusuke Ohwatari , Tetsushi Abe , Nobuhiko Miki
IPC分类号： H04W72/04
CPC分类号： H04W72/04 , H04L5/0048 , H04L5/0091 , H04W24/10 , H04W72/12
摘要： The present invention provides a base station apparatus, a mobile terminal apparatus and a communication control method which can improve the accuracy of channel quality estimation. A communication control method includes the steps of: allocating a CSI-RS (Channel State Information-Reference Signal), which is a reference signal for downlink channel estimation, in resources for the CSI-RS that are defined for CSI-RS transmission; setting to muting resources in the resources for the CSI-RS; and reporting parameters to specify the CSI-RS, including at least a transmitting subframe cycle, a subframe offset and transmission power, to a mobile terminal apparatus.
摘要翻译： 本发明提供一种提高信道质量估计精度的基站装置，移动终端装置和通信控制方法。 通信控制方法包括以下步骤：在CSI-RS传输定义的CSI-RS资源中分配作为下行链路信道估计的参考信号的CSI-RS（信道状态信息参考信号）; 设置为CSI-RS资源的静态资源; 以及向移动终端设备报告参数以指定CSI-RS，包括至少发送子帧周期，子帧偏移和发送功率。
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27.发明申请RADIO COMMUNICATION CONTROL METHOD, RADIO COMMUNICATION SYSTEM, RADIO BASE STATION, AND MOBILE TERMINAL 审中-公开无线电通信控制方法，无线电通信系统，无线基站和移动终端公开(公告)号：US20130176979A1
公开(公告)日：2013-07-11
申请号：US13822087
申请日：2011-09-01
申请人： Yusuke Ohwatari , Nobuhiko Miki , Tetsushi Abe , Yukihiko Okumura
发明人： Yusuke Ohwatari , Nobuhiko Miki , Tetsushi Abe , Yukihiko Okumura
IPC分类号： H04W72/04
CPC分类号： H04W72/046 , H04B7/024 , H04B7/0617 , H04B7/0634
摘要： In each Mobile terminal, channel impulse characteristics from radio base stations to the mobile terminal is calculated. In a radio communication system, under the assumption that each of the mobile terminals performs optimum receiving beamforming in order to receive a data signal from a radio base station that actually sends the data signal to the mobile terminal, optimum receiving beamforming characteristics are estimated for each mobile terminal. Each of radio base stations that share optimum receiving beamforming characteristics calculates precoding characteristics for each mobile terminal according to the optimum receiving beamforming characteristics such that main beams are directed to mobile terminals to which the radio base station sends data signals and null beams are directed to mobile terminals to which the radio base station does not send data signals.
摘要翻译： 在每个移动终端中，计算从无线基站到移动终端的信道脉冲特性。 在无线电通信系统中，在每个移动终端执行最佳接收波束成形以便从实际发送数据信号的移动终端接收来自无线电基站的数据信号的假设下，假定每个 移动终端。 共享最佳接收波束形成特性的每个无线电基站根据最佳的接收波束成形特性来计算每个移动终端的预编码特性，使得主波束被引导到无线电基站发送数据信号的移动终端，空波束被引导到移动 无线基站不发送数据信号的终端。
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公开(公告)号：US20130176978A1
公开(公告)日：2013-07-11
申请号：US13816749
申请日：2011-08-16
申请人： Tetsushi Abe , Nobuhiko Miki , Yusuke Ohwatari
发明人： Tetsushi Abe , Nobuhiko Miki , Yusuke Ohwatari
IPC分类号： H04W72/04
CPC分类号： H04W72/04 , H04L5/0048 , H04L5/0098
摘要： To signal CSI-RS location indexes indicative of CSI-RS location positions in a resource block with high efficiency, a signaling method of CSI-RS is characterized by having the steps of locating a CSI-RS that is a reference signal for downlink channel estimation in resources for CSI-RS reserved to transmit the CSI-RS, generating a CSI-RS location index indicative of a location position of the CSI-RS located in the resources for CSI-RS, in the CSI-RS location index an index pattern varies corresponding to the number of CSI-RS ports so that an index pattern of the relatively low number of CSI-RS ports is a subset of an index pattern of the relatively high number of CSI-RS ports, and transmitting the generated CSI-RS location index to a mobile terminal apparatus.
摘要翻译： 为了以高效率向资源块中发送指示CSI-RS位置位置的CSI-RS位置索引，CSI-RS的信令方法的特征在于具有以下步骤：定位作为下行链路信道估计的参考信号的CSI-RS 在用于发送CSI-RS的CSI-RS的资源中，在CSI-RS位置索引中生成指示位于CSI-RS资源中的CSI-RS的位置位置的CSI-RS位置索引，索引模式 相应于CSI-RS端口的数量变化，使得相对较少数量的CSI-RS端口的索引模式是相对较多数量的CSI-RS端口的索引模式的子集，并且发送所生成的CSI-RS 位置索引给移动终端设备。
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公开(公告)号：US08254476B2
公开(公告)日：2012-08-28
申请号：US12368540
申请日：2009-02-10
IPC分类号： H04K1/10
CPC分类号： H04L25/03343 , H04L27/2621 , H04L2025/03414 , H04L2025/03426
摘要： A wireless communication device that transmits a wireless signal by carrying out linear precoding processing using a plurality of transmission antennas is provided with: a phase pattern control unit for selecting a phase pattern that reduces peak-to-average power ratio; a phase rotation unit for carrying out phase rotation on a modulation signal using the phase pattern selected in the phase pattern control unit; a control signal generation unit for generating a control signal based on the phase pattern selected in the phase pattern control unit; and a preceding unit for carrying out linear precoding processing on output signals from the phase rotation unit and output signals from the control signal generation unit.
摘要翻译： 通过使用多个发送天线进行线性预编码处理来发送无线信号的无线通信装置具有：相位图案控制部，其选择降低峰值与平均功率比的相位图案; 相位旋转单元，用于使用在相位图案控制单元中选择的相位图案对调制信号进行相位旋转; 控制信号生成单元，用于基于在相位图案控制单元中选择的相位图形生成控制信号; 以及用于对来自相位旋转单元的输出信号和来自控制信号生成单元的输出信号进行线性预编码处理的前一单元。
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公开(公告)号：US08126498B2
公开(公告)日：2012-02-28
申请号：US12432230
申请日：2009-04-29
IPC分类号： H04B7/00
摘要： A disclosed radio communication apparatus includes a precoding unit, a optimum transmit power calculation unit and a transmission unit. The optimum transmit power calculation unit receives the transmit weight related information from the precoding unit and calculates a transmit power level to optimize an objective function in accordance with an interior point method. The objective function results from addition of a barrier function adjusted with a barrier parameter to an original objective function associated with a constrained optimization problem. The original objective function includes a function of respective channel capacities for individual users derived from the transmit weight related information. The optimum transmit power calculation unit adaptively updates a logarithm of the barrier parameter and uses a gradient obtained through a high-order derivative with the logarithm of the barrier parameter to calculate the transmit power level to optimize the resulting objective function.
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