公开(公告)号：US20130223269A1

公开(公告)日：2013-08-29

申请号：US13882770

申请日：2011-10-05

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

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

IPC分类号： H04B7/04

CPC分类号： H04B7/0421 ,  H04B7/0452 ,  H04B7/0639 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0057 ,  H04L25/021 ,  H04L25/0248 ,  H04L25/03942 ,  H04L25/03955 ,  H04L27/2613 ,  H04L2025/03414 ,  H04W72/046

摘要： Provided is a radio communication system in which a base station apparatus with a plurality of transmission antennas spatially multiplexes and transmits a transmission signal addressed to a plurality of mobile station apparatuses, and in which the mobile station apparatuses receive the signal transmitted from the base station apparatus. The mobile station apparatuses select a desired precoding vector from predetermined candidates, and give the base station apparatus information identifying the selected precoding vector. The base station apparatus generates a linear filter on the basis of the information from the mobile station apparatuses, grasps multi-user interference that at least one of the mobile station apparatuses is subjected to when the generated linear filter is used, generates a new transmission signal by subtracting the multi-user interference from the transmission signal, and spatially multiplexes the transmission signal addressed to the plurality of mobile station apparatuses by multiplying the new transmission signal by the linear filter. Thus, favorable reception characteristics can be obtained while CSI feedback is performed efficiently.

摘要翻译： 提供一种无线通信系统，其中具有多个发送天线的基站装置进行空间复用并发送寻址到多个移动台装置的发送信号，并且其中移动站装置接收从基站装置发送的信号 。 移动站装置从预定的候选中选择所希望的预编码向量，并给出识别选择的预编码向量的基站装置信息。 基站装置基于来自移动站装置的信息生成线性滤波器，掌握使用生成的线性滤波器时至少一个移动台装置受到的多用户干扰，生成新的发送信号 通过从发送信号中减去多用户干扰，并且通过将新的发送信号乘以线性滤波器来空间复用寻址到多个移动台装置的发送信号。 因此，可以有效地执行CSI反馈，从而获得良好的接收特性。

公开(公告)号：US20130286940A1

公开(公告)日：2013-10-31

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： H04B7/04

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。

公开(公告)号：US09209874B2

公开(公告)日：2015-12-08

申请号：US13882556

申请日：2011-10-24

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

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

IPC分类号： H04B7/02 ,  H04B7/04 ,  H04B7/06 ,  H04L25/03

CPC分类号： H04B7/0456 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/0689 ,  H04B7/0697 ,  H04L25/03942

摘要： The present invention switches an interference suppression system between a linear precoding and a nonlinear precoding in accordance with a communication environment. A wireless transmission apparatus is provided with a plurality of transmission antenna units (303), and multiplexes spatially and transmits a plurality of series of data with respect to at least one wireless reception apparatus, and includes a selection unit (307) configured to select any one precoding system from a plurality of types of precoding systems and a precoding unit (315) configured to carry out precoding with respect to the plurality of series of data using the selected precoding system. In addition, the selection unit selects either of a first precoding system carrying out linear processing with respect to the plurality of series of data or a second precoding system carrying out nonlinear processing with respect to the plurality of series of data.

摘要翻译： 本发明根据通信环境在线性预编码和非线性预编码之间切换干扰抑制系统。 一种无线发送装置具备多个发送天线单元（303），在空间上进行多路复用，并相对于至少一个无线接收装置发送多个数据序列，并具有选择单元（307） 一种来自多种类型的预编码系统的预编码系统和预编码单元（315），其被配置为使用所选择的预编码系统对多个数据系列进行预编码。 此外，选择单元选择对多个数据系列进行线性处理的第一预编码系统或对多个数据系列执行非线性处理的第二预编码系统。

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。

公开(公告)号：US09178598B2

公开(公告)日：2015-11-03

申请号：US13884015

申请日：2011-08-29

申请人： Hiromichi Tomeba ,  Shimpei To ,  Takashi Onodera ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado

发明人： Hiromichi Tomeba ,  Shimpei To ,  Takashi Onodera ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado

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

CPC分类号： H04B7/0697 ,  H04B7/0478

摘要： In a codebook-based closed loop type MIMO, improvement for complexity in a mobile station apparatus, and reduction of amount of overhead needed for notification from the mobile station apparatus should be provided. A wireless transmission apparatus that includes a plurality of transmission antennas, performs precoding on a data signal for each of a plurality of reception apparatuses and spatially multiplexes and transmits the signal after the precoding. The wireless transmission apparatus performs sharing a codebook describing a plurality of linear filters associated with each other is shared with the each reception apparatus, and precoding on the data signal for each reception apparatus, based on a first linear filter that is extracted from the codebook in each reception apparatus based on the association and that is notified from each reception apparatus.

摘要翻译： 在基于码本的闭环型MIMO中，应提供移动台装置的复杂度的改善以及来自移动台装置的通知所需的开销量的减少。 一种包括多个发送天线的无线发送装置，对多个接收装置中的每一个对数据信号进行预编码，并对该预编码后的信号进行空间复用并发送。 基于从码本中提取出的第一线性滤波器，执行与各接收装置共享描述彼此相关联的多个线性滤波器的码本的无线传输装置，并对每个接收装置对数据信号进行预编码 每个接收装置基于该关联并从每个接收装置通知。

公开(公告)号：US20130336418A1

公开(公告)日：2013-12-19

申请号：US14002616

申请日：2012-03-02

申请人： Hiromichi Tomeba ,  Takashi Onodera ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado ,  Shimpei To

发明人： Hiromichi Tomeba ,  Takashi Onodera ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado ,  Shimpei To

IPC分类号： H04B7/04

CPC分类号： H04B7/0482 ,  H04B7/0452 ,  H04B7/0465 ,  H04B7/0632 ,  H04B7/0697 ,  H04L1/0003

摘要： A terminal device notifies a base station device about control information associated with a receive quality of the terminal device. The base station device performs data modulation on a plurality of pieces of transmit data for the terminal device, by using a plurality of different data modulation schemes one by one, based on the control information, and spatially multiplexes the plurality of pieces of transmit data after the data modulation over a single wireless resource and transmits a spatially multiplexed signal. The terminal device receives the signal with the plurality of pieces of transmit data spatially multiplexed, and detects desirable transmit data from the receive signal, based on a first channel matrix which represents channel state information between the base station device and the terminal device and a second channel matrix in which the first channel matrix is multiplied by a transform matrix. Accordingly, an adaptive modulation technology is applied even to MIMO spatial multiplexing transmission using a LR technology, and hence a wireless communication system and so forth that can contribute to improvement in frequency utilization efficiency can be provided.

摘要翻译： 终端装置向基站装置通知与终端装置的接收质量有关的控制信息。 基站装置基于控制信息，通过使用多个不同的数据调制方案，对终端装置的多条发送数据进行数据调制，并且将多条发送数据在 通过单个无线资源进行数据调制，并发送空间复用信号。 终端设备接收具有多个发送数据的信号进行空间复用，并且基于表示基站设备与终端设备之间的信道状态信息的第一信道矩阵和第二信道矩阵，从接收信号中检测期望的发送数据 信道矩阵，其中第一信道矩阵乘以变换矩阵。 因此，利用LR技术甚至可以应用自适应调制技术进行MIMO空间复用传输，因此可以提供有助于提高频率利用效率的无线通信系统等。

公开(公告)号：US20130286949A1

公开(公告)日：2013-10-31

申请号：US13989516

申请日：2011-11-24

申请人： Hiromichi Tomeba ,  Shimpei To ,  Takashi Onodera ,  Hideo Namba ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado

发明人： Hiromichi Tomeba ,  Shimpei To ,  Takashi Onodera ,  Hideo Namba ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado

IPC分类号： H04W72/04 ,  H04B7/04

CPC分类号： H04W72/0406 ,  H04B7/0452 ,  H04B7/0626 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/03343 ,  H04L25/03891 ,  H04L2025/03426 ,  H04W48/16 ,  H04W52/42 ,  H04W88/02 ,  H04W88/08

摘要： A wireless communication system includes a base station apparatus having a plurality of antennas and a plurality of mobile station apparatuses each having, at least, one antenna. The base station apparatus acquires channel state information of the plurality of mobile station apparatuses, based on any one of a plurality of different channel state information formats, and, separately precodes data signals addressed to the plurality of mobile station apparatuses based on the channel state information, and spatially multiplexes and transmits the precoded signals. The mobile station apparatus receives the precoded signals and detects a desired data signal from the multiplexed signals addressed to mobile station apparatuses, based on the channel state information. With this scheme, it is possible to realize a new spatial multiplexing technology that enables a plurality of mobile station apparatuses using different CSI feedback schemes to be spatially multiplexed on the same wireless resource in the downlink MU-MIMO transmission.

摘要翻译： 无线通信系统包括具有多个天线的基站装置和至少具有一个天线的多个移动台装置。 基站装置基于多种不同的信道状态信息格式中的任何一种来获取多个移动台装置的信道状态信息，并且基于信道状态信息分别对寻址到多个移动台装置的数据信号进行预编码 ，并空间复用并传输预编码信号。 移动站装置根据信道状态信息接收预编码信号，并从寻址到移动台装置的复用信号中检测出期望的数据信号。 利用该方案，可以实现在下行链路MU-MIMO传输中使能使用不同CSI反馈方案的多个移动台装置在同一无线资源上进行空间多路复用的新的空间复用技术。

公开(公告)号：US09130629B2

公开(公告)日：2015-09-08

申请号：US14002616

申请日：2012-03-02

申请人： Hiromichi Tomeba ,  Takashi Onodera ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado ,  Shimpei To

发明人： Hiromichi Tomeba ,  Takashi Onodera ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado ,  Shimpei To

IPC分类号： H04B7/04 ,  H04L1/00 ,  H04B7/06

CPC分类号： H04B7/0482 ,  H04B7/0452 ,  H04B7/0465 ,  H04B7/0632 ,  H04B7/0697 ,  H04L1/0003

摘要： A terminal device notifies a base station device about control information associated with a receive quality of the terminal device. The base station device performs data modulation on a plurality of pieces of transmit data for the terminal device, by using a plurality of different data modulation schemes one by one, based on the control information, and spatially multiplexes the plurality of pieces of transmit data after the data modulation over a single wireless resource and transmits a spatially multiplexed signal. The terminal device receives the signal with the plurality of pieces of transmit data spatially multiplexed, and detects desirable transmit data from the receive signal, based on a first channel matrix which represents channel state information between the base station device and the terminal device and a second channel matrix in which the first channel matrix is multiplied by a transform matrix. Accordingly, an adaptive modulation technology is applied even to MIMO spatial multiplexing transmission using a LR technology, and hence a wireless communication system and so forth that can contribute to improvement in frequency utilization efficiency can be provided.

摘要翻译： 终端装置向基站装置通知与终端装置的接收质量有关的控制信息。 基站装置基于控制信息，通过使用多个不同的数据调制方案，对终端装置的多条发送数据进行数据调制，并且将多条发送数据在 通过单个无线资源进行数据调制，并发送空间复用信号。 终端设备接收具有多个发送数据的信号进行空间复用，并且基于表示基站设备与终端设备之间的信道状态信息的第一信道矩阵和第二信道矩阵，从接收信号中检测期望的发送数据 信道矩阵，其中第一信道矩阵乘以变换矩阵。 因此，利用LR技术甚至可以应用自适应调制技术进行MIMO空间复用传输，因此可以提供有助于提高频率利用效率的无线通信系统等。

公开(公告)号：US20130242849A1

公开(公告)日：2013-09-19

申请号：US13884015

申请日：2011-08-29

申请人： Hiromichi Tomeba ,  Shimpei To ,  Takashi Onodera ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado

发明人： Hiromichi Tomeba ,  Shimpei To ,  Takashi Onodera ,  Hiroshi Nakano ,  Alvaro Ruiz Delgado

IPC分类号： H04B7/06

CPC分类号： H04B7/0697 ,  H04B7/0478

摘要： In a codebook-based closed loop type MIMO, improvement for complexity in a mobile station apparatus, and reduction of amount of overhead needed for notification from the mobile station apparatus should be provided. A wireless transmission apparatus that includes a plurality of transmission antennas, performs precoding on a data signal for each of a plurality of reception apparatuses and spatially multiplexes and transmits the signal after the precoding. The wireless transmission apparatus performs sharing a codebook describing a plurality of linear filters associated with each other is shared with the each reception apparatus, and precoding on the data signal for each reception apparatus, based on a first linear filter that is extracted from the codebook in each reception apparatus based on the association and that is notified from each reception apparatus.

摘要翻译： 在基于码本的闭环型MIMO中，应提供移动台装置的复杂度的改善以及来自移动台装置的通知所需的开销量的减少。 一种包括多个发送天线的无线发送装置，对多个接收装置中的每一个对数据信号进行预编码，并对该预编码后的信号进行空间复用并发送。 基于从码本中提取出的第一线性滤波器，执行与各接收装置共享描述彼此相关联的多个线性滤波器的码本的无线传输装置，并对每个接收装置对数据信号进行预编码 每个接收装置基于该关联并从每个接收装置通知。

公开(公告)号：US20140204841A1

公开(公告)日：2014-07-24

申请号：US14239088

申请日：2012-08-13

申请人： Alvaro Ruiz Delgado ,  Takashi Onodera ,  Hiromichi Tomeba ,  Hiroshi Nakano ,  Minoru Kubota

发明人： Alvaro Ruiz Delgado ,  Takashi Onodera ,  Hiromichi Tomeba ,  Hiroshi Nakano ,  Minoru Kubota

IPC分类号： H04B7/04

CPC分类号： H04B7/0456 ,  H04B7/0452 ,  H04B7/0689 ,  H04L2025/03802

摘要： A wireless reception device is notified of whether a multi-user MIMO signal transmitted from a wireless transmission device has undergone linear precoding or non-linear precoding without increasing the amount of control information. A wireless transmission device having a plurality of transmit antennas 303, for transmitting spatially multiplexed signals to a plurality of wireless reception devices includes a group construction unit 307 configured to classify the wireless reception devices into a plurality of groups and to determine a precoding scheme for each of the groups, a selection unit 315 configured to select one group from among the groups, and a precoding unit 323 configured to precode transmit data addressed to each of wireless reception devices belonging to the selected group, using a precoding scheme determined for the selected group.

摘要翻译： 从无线发送装置发送的多用户MIMO信号是否已经经历了线性预编码或非线性预编码，而不增加控制信息量，通知无线接收装置。 具有用于将空间复用信号发送到多个无线接收装置的多个发送天线303的无线发送装置包括：组构建单元307，被配置为将无线接收装置分类为多个组，并且确定每个 组成的选择单元315，被配置为从组中选择一组;以及预编码单元323，被配置为使用为所选择的组确定的预编码方案来对寻址到​​属于所选择的组的无线接收装置中的每一个的发送数据进行预编码 。