公开(公告)号：US20140011493A1

公开(公告)日：2014-01-09

申请号：US14006975

申请日：2012-02-03

申请人： Shinpei Toh ,  Kozue Hirata

发明人： Shinpei Toh ,  Kozue Hirata

IPC分类号： H04W16/14 ,  H04W24/10

CPC分类号： H04W16/14 ,  H04B7/0404 ,  H04B7/0617 ,  H04B7/0634 ,  H04W24/10 ,  H04W84/045

摘要： There is provided a first base station device in a communication system in which, within a wide coverage area of a first cell, at least one second cell having a coverage area narrower than the coverage area of the first cell is present, the first base station device controlling the first cell. The first base station device supplies information concerning a transmission weight to a second base station device which controls the second cell, the transmission weight being used by a terminal device which transmits a data signal to the second base station device. With this configuration, in a system in which a plurality of cells with a small zone radius are present in a cell with a large zone radius, it is possible to determine, with a small amount of calculations, transmission and reception weights that can eliminate interference received by the cell with a large zone radius from the plurality of cells with a small zone radius.

摘要翻译： 在通信系统中提供了第一基站装置，其中在第一小区的广泛覆盖区域内存在具有比第一小区的覆盖区域窄的覆盖区域的至少一个第二小区，第一基站 设备控制第一个单元。 第一基站装置向控制第二小区的第二基站装置提供关于发送权重的信息，发送权重由向第二基站装置发送数据信号的终端装置使用。 利用这种配置，在具有小区域半径的小区中存在具有小区域半径的多个小区的系统中，可以通过少量的计算来确定可以消除干扰的发送和接收权重 由具有小区域半径的多个单元的具有大区域半径的单元接收。

公开(公告)号：US20130308716A1

公开(公告)日：2013-11-21

申请号：US13978954

申请日：2011-12-22

申请人： Shinpei Toh ,  Kozue Hirata ,  Ryota Yamada

发明人： Shinpei Toh ,  Kozue Hirata ,  Ryota Yamada

IPC分类号： H04B7/04

CPC分类号： H04B7/0456 ,  H04B7/0417

摘要： A wireless communication system includes a plurality of transmission devices, each of which transmits signals resulting from precoding performed for a plurality of resources, and a reception device that receives at least one desired signal and a plurality of undesired signals, the number of which is greater than or equal to the degree of freedom that the plurality of resources have. The at least one desired signal and the plurality of undesired signals have been transmitted from the transmission devices. The plurality of resources is the unit of precoding. At least one of the plurality of transmission devices transmits signals on each of which precoding has been performed such that equivalent channel vectors of the plurality of undesired signals in the reception device are made to be orthogonal to a reception weight vector used in the reception device. The reception device estimates equivalent channel vectors of the plurality of undesired signals, calculates a reception weight vector by using the estimated equivalent channel vectors of the plurality of undesired signals, and extracts a desired signal by multiplying a reception signal received using the plurality of resources and the calculated reception weight vector together. The plurality of resources is the unit of precoding. As a result, in a system in which IA is used, the degradation of reception characteristics may be suppressed even under circumstances in which a CSI error occurs.

摘要翻译： 无线通信系统包括多个传输设备，每个传输设备传输由多个资源执行的预编码产生的信号;以及接收设备，其接收至少一个期望信号和多个不需要的信号，其数量较大 大于或等于多个资源具有的自由度。 至少一个期望信号和多个不需要的信号已经从传输设备发送。 多个资源是预编码的单元。 所述多个发送装置中的至少一个发送各自进行了预编码的信号，使得所述接收装置中的所述多个不需要信号的等效信道矢量与所述接收装置中使用的接收权重向量正交。 接收装置估计多个不需要信号的等效信道向量，通过使用多个不需要信号的估计等效信道向量来计算接收权重向量，并且通过将使用多个资源接收的接收信号相乘来提取期望信号，以及 计算的接收权重向量在一起。 多个资源是预编码的单元。 结果，在使用IA的系统中，即使在发生CSI错误的情况下也可以抑制接收特性的劣化。

公开(公告)号：US20130324136A1

公开(公告)日：2013-12-05

申请号：US13984900

申请日：2012-01-31

申请人： Kozue Hirata ,  Shinpei Toh

发明人： Kozue Hirata ,  Shinpei Toh

IPC分类号： H04W16/14

CPC分类号： H04W16/14 ,  H04B7/0417 ,  H04W16/32 ,  H04W52/244

摘要： In a communication system, a first cell that covers a wide region includes, in a cover region thereof, a second cell that covers a smaller region than the first cell, one first terminal device or more positioned in the first cell receive a signal on which precoding has been performed and that is transmitted by a first base station apparatus that controls the first cell, and one second terminal device or more positioned in the second cell receive a signal on which precoding has been performed and that is transmitted using the same frequency as in the first cell by a second base station apparatus that controls the second cell. The communication system determines the number of streams to be transmitted by the second base station apparatus on the basis of information regarding the number of streams to be transmitted by the first base station apparatus. As a result, in a system in which interference between cells exists, interference may be reduced with a simple structure using transmit and receive filters.

摘要翻译： 在通信系统中，覆盖广域的第一小区在其覆盖区域中包括覆盖比第一小区更小的区域的第二小区，位于第一小区中的一个第一终端设备或更多个第一小区接收信号， 已经执行了预编码，并且由控制第一小区的第一基站装置发送，并且位于第二小区中的一个第二终端设备接收已经执行了预编码的信号，并且使用与第 在第一小区中由控制第二小区的第二基站装置。 通信系统根据关于由第一基站装置发送的流的数量的信息来确定由第二基站装置发送的流的数量。 结果，在存在小区之间的干扰的系统中，可以通过使用发射和接收滤波器的简单结构来减少干扰。

公开(公告)号：US20140135049A1

公开(公告)日：2014-05-15

申请号：US14126740

申请日：2012-05-21

申请人： Kozue Hirata ,  Shinpei Toh

发明人： Kozue Hirata ,  Shinpei Toh

IPC分类号： H04L5/00 ,  H04W72/04

CPC分类号： H04L5/0032 ,  H04L1/0026 ,  H04L5/0035 ,  H04L5/0062 ,  H04W28/04 ,  H04W28/16 ,  H04W72/0426 ,  H04W72/082

摘要： A control station device performs communications controlled by a central control station device. The control station device acquires information related to a control station device that becomes an interference source to a coverage area controlled by the control station device. The control station device notifies the central control station device of the information related to the control station device that becomes the interference source. The control station device acquires, from the central control station device, information related to a possibility of communications thereof. In this way, the control station device is provided that forms the communication system excellent in frequency usage efficiency based on interference source information and the like indicating an inter-cell interference status measured at each cell.

摘要翻译： 控制站装置执行由中央控制站装置控制的通信。 控制站装置获取与成为干扰源的控制站装置相关的信息到由控制站装置控制的覆盖区域。 控制站装置向中央控制站装置通知与成为干扰源的控制站装置有关的信息。 控制站装置从中央控制站装置获取与其通信的可能性有关的信息。 以这种方式，提供了基于表示在每个小区测量的小区间干扰状态的干扰源信息等形成频率使用效率优异的通信系统的控制站装置。

公开(公告)号：US09019919B2

公开(公告)日：2015-04-28

申请号：US13700756

申请日：2011-05-27

申请人： Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota

发明人： Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota

IPC分类号： H04B7/06

CPC分类号： H04B7/0697 ,  H04B7/0617

摘要： When signals received by receiving antennas included in each terminal are subjected to MMSE combining, it is configured that each terminal is able to grasp position of desired signal in signal vector obtained after combining. A base station 100 receives by a receiving antenna 23 from the terminal apparatus channel state information between a transmitting antenna 16 and spatial multiplexing object antennas included in each terminal apparatus. A transmit weight calculation unit 19 calculates a transmit weight for performing spatial multiplexing transmission to the terminal apparatus based on the channel state information. Transmit weight multiplication unit s 12 and 18 multiplies an information signal addressed to each terminal apparatus to be performed spatial multiplexing by the transmit weight. A signal multiplexing unit 13 multiplexes the information signal multiplied by the transmit weight and an information to specify the information signal that needs to be demodulated by each terminal apparatus.

摘要翻译： 当通过每个终端中包含的接收天线接收到的信号进行MMSE组合时，配置为每个终端能够在组合后获得的信号向量中掌握期望信号的位置。 基站100由发送天线16和各终端装置中包含的空间复用对象天线之间的终端装置信道状态信息由接收天线23接收。 发送权重计算单元19基于信道状态信息计算用于对终端装置执行空间复用传输的发送权重。 发送权重乘法单元12和18将寻址到每个终端设备的信息信号乘以发送权重进行空间复用。 信号复用单元13将乘以发送权重的信息信号和用于指定每个终端装置需要解调的信息信号的信息进行复用。

公开(公告)号：US20120327881A1

公开(公告)日：2012-12-27

申请号：US13582259

申请日：2011-01-31

申请人： Hiroshi Nakano ,  Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiromichi Tomeba

发明人： Hiroshi Nakano ,  Shimpei To ,  Takashi Onodera ,  Kozue Hirata ,  Hiromichi Tomeba

IPC分类号： H04B7/06 ,  H04W72/04

CPC分类号： H04B7/0452 ,  H04B7/0697 ,  H04J11/0033 ,  H04L5/0023 ,  H04L5/0051 ,  H04L25/03305

摘要： The disclosed is a transmission device including a plurality of transmission antennas for transmitting signals in the same channel at the same time point to a plurality of reception devices, characterized by including: a dedicated reference signal generator configured to generate dedicated reference signals for the respective reception devices; a data signal generator configured to generate data signals for the respective reception devices; a spatial multiplexer configured to spatially multiplex at least some of the dedicated reference signals and at least some of the data signals; and a transmitter configured to transmit the spatially multiplexed signals.

摘要翻译： 所公开的是一种发送装置，其包括：多个发送天线，用于在同一时间点向多个接收装置发送同一信道中的信号，其特征在于包括：专用参考信号发生器，被配置为产生用于各个接收的专用参考信号 设备; 数据信号发生器，被配置为生成各个接收装置的数据信号; 空间多路复用器，被配置为空间复用所述专用参考信号和所述数据信号中的至少一些信号中的至少一些; 以及被配置为发送所述空间复用信号的发射机。

公开(公告)号：US20120307706A1

公开(公告)日：2012-12-06

申请号：US13576866

申请日：2010-12-17

申请人： Hiroshi Nakano ,  Takashi Onodera ,  Kozue Hirata ,  Hiromichi Tomeba ,  Shimpei To

发明人： Hiroshi Nakano ,  Takashi Onodera ,  Kozue Hirata ,  Hiromichi Tomeba ,  Shimpei To

IPC分类号： H04W4/06

CPC分类号： H04L25/03343 ,  H04B7/0604 ,  H04B7/0697 ,  H04J11/0033 ,  H04L2025/03426 ,  H04W52/42

摘要： A multiplexed signal generator is configured to multiplex a signal addressed to a first reception device which has been subjected to a power suppression process of suppressing the power of the signal, and a signal addressed to a second reception device which is not subjected to the power suppression process.

摘要翻译： 复用信号发生器被配置为对寻址到已经经过抑制信号功率的功率抑制处理的第一接收装置的信号进行复用，以及寻址到不经受功率抑制的第二接收装置的信号 处理。

公开(公告)号：US20120064833A1

公开(公告)日：2012-03-15

申请号：US13321194

申请日：2010-05-19

申请人： Hiroshi Nakano ,  Takashi Onodera ,  Kozue Hirata ,  Minoru Kubota

发明人： Hiroshi Nakano ,  Takashi Onodera ,  Kozue Hirata ,  Minoru Kubota

IPC分类号： H04B15/00 ,  H04B7/24

CPC分类号： H04L25/03343 ,  H04L27/2601

摘要： When applying inflated lattice precoding (ILP) transmission to a multi-carrier scheme, there arises a need to notify coefficient α thereof per sub-carrier. Applying ILP transmission has proven difficult since multi-carrier schemes such as those widely adopted in mobile communication systems, etc., in recent years have an extremely large number of sub-carriers and the information volume of the control signal becomes extremely large. As such, at a transmitter device B, coefficient α is inputted to a 1/α multiplier part 15, and a DRS from a dedicated reference signal (DRS) generator part 11 is multiplied by 1/α and transmitted. At a receiver device C, an estimated signal is obtained by performing a remainder process at a reception modulo operator part 51 using a modulo width determined based on the DRS, without performing a process of a reception coefficient multiplier part with respect to a reception signal.

摘要翻译： 当将充气格子预编码（ILP）传输应用于多载波方案时，需要通知每个子载波的系数α。 由于近年来在移动通信系统等中广泛采用的多载波方案具有非常多的子载波，并且控制信号的信息量变得非常大，所以应用ILP传输被证明是困难的。 这样，在发送装置B中，将系数α输入到1 /α乘法器部15，将来自专用基准信号（DRS）发生部11的DRS乘以1 /α并进行发送。 在接收机装置C中，通过使用基于DRS确定的模数宽度，在接收模运算器部分51执行余数处理，而不对接收信号执行接收系数乘法器部分的处理，来获得估计信号。

公开(公告)号：US09185577B2

公开(公告)日：2015-11-10

申请号：US13700754

申请日：2011-05-13

申请人： Hiromichi Tomeba ,  Minoru Kubota ,  Takashi Onodera ,  Shimpei To ,  Kozue Hirata ,  Hiroshi Nakano

发明人： Hiromichi Tomeba ,  Minoru Kubota ,  Takashi Onodera ,  Shimpei To ,  Kozue Hirata ,  Hiroshi Nakano

IPC分类号： H04W24/02 ,  H04B7/04 ,  H04L1/06 ,  H04L25/497 ,  H04J11/00 ,  H04L27/26

CPC分类号： H04W24/02 ,  H04B7/0452 ,  H04J11/0033 ,  H04L1/0625 ,  H04L1/0656 ,  H04L25/4975 ,  H04L27/2601

摘要： To realize transmission performances equivalent to those of an MU-MIMO BLAST ZF-THP system without increasing a signal processing amount in a base station apparatus in a downlink MU-MIMO transmission system. A transmission apparatus is provided with a plurality of transmission antennas, generates a transmission signal addressed to each reception apparatus based on information indicating spatial correlation of channels to and from a plurality of reception apparatuses, space-multiplexes the generated each transmission signal in the same wireless resource, and transmits it to each reception apparatus. The transmission apparatus includes: an ordering determination part 601 which determines an order in which a transmission signal addressed to each reception apparatus is generated based on information indicating spatial correlation of channels; a linear filter generation part 603 which generates a linear filter based on the determined order; a THP part 605 which performs a THP process by using the determined order and the linear filter; and a linear filter multiplication part 607 which multiplies an output of the THP part 605 by the linear filter.

摘要翻译： 实现与MIMO-MIMO BLAST ZF-THP系统相当的传输性能，而不增加下行MU-MIMO传输系统中的基站装置中的信号处理量。 发送装置具有多个发送天线，基于表示与多个接收装置的频道的频道的空间相关性的信息，生成发往各接收装置的发送信号，对同一无线电中产生的各发送信号进行空间复用 资源，并将其发送到每个接收装置。 传输装置包括：排序确定部分601，其基于指示信道的空间相关性的信息来确定寻址到每个接收装置的发送信号的顺序; 线性滤波器生成部603，其基于所确定的次序生成线性滤波器; 通过使用确定的顺序执行THP处理的THP部件605和线性滤波器; 线性滤波器乘法部607，其将THP部605的输出与线性滤波器相乘。

公开(公告)号：US09166658B2

公开(公告)日：2015-10-20

申请号：US13877368

申请日：2011-10-03

申请人： Shimpei To ,  Takashi Onodera ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota ,  Kozue Hirata ,  Alvaro Ruiz Delgado

发明人： Shimpei To ,  Takashi Onodera ,  Hiroshi Nakano ,  Hiromichi Tomeba ,  Minoru Kubota ,  Kozue Hirata ,  Alvaro Ruiz Delgado

IPC分类号： H04W4/00 ,  H04B7/04 ,  H04B7/06

CPC分类号： H04B7/0417 ,  H04B7/0452 ,  H04B7/065

摘要： A wireless communication system in which a base station apparatus having a plurality of transmission antennas and one or more terminal apparatuses communicate with each other is provided with at least two methods of a first feedback method and a second feedback method regarding propagation path information at the time of reception. In accordance with a communication condition between the base station apparatus and the terminal apparatus, or the function of the terminal apparatus, the terminal apparatus performs feedback by one of the two methods of the first feedback method and the second feedback method. The base station apparatus performs spatial multiplexing transmission on the basis of the propagation path information that has been fed back. Thus, in a system in which CSI is fed back for MIMO transmission, desired transmission characteristics can be efficiently obtained.

摘要翻译： 具有多个发送天线和一个以上的终端装置的基站装置相互通信的无线通信系统具备关于该时刻的传播路径信息的第一反馈方法和第二反馈方法的至少两种方法 的接待。 根据基站装置与终端装置之间的通信条件或终端装置的功能，终端装置通过第一反馈方法和第二反馈方法的两种方法之一进行反馈。 基站装置根据反馈的传播路径信息进行空间复用传输。 因此，在反馈用于MIMO传输的系统中，可以有效地获得期望的传输特性。