Low Overhead Feedback Scheme for Codebook Based Closed-Loop Mimo
    51.
    发明申请
    Low Overhead Feedback Scheme for Codebook Based Closed-Loop Mimo 失效
    基于码本的闭环Mimo的低架空反馈方案

    公开(公告)号:US20110299622A1

    公开(公告)日:2011-12-08

    申请号:US13141207

    申请日:2010-02-09

    IPC分类号: H04L27/00

    CPC分类号: H04B7/0621 H04B7/0663

    摘要: The present invention relates to a Multi-Input Multi-Output (MIMO) communication system and more particularly, to a method for Correlation matrix feedback in a multi-cell wireless communication system. A method for transmitting correlation matrix feedback information of a mobile station considering adaptive feedback mode in a multi-cell wireless communication system according to one embodiment of the present invention comprises measuring a channel between the mobile station and a serving base station using a signal received from the serving base station; determining a first matrix indicating channel state information and a first precoder using the measured channel; generating a second matrix using a Fourier matrix and the first matrix; and transmitting feedback information including at least one of information of the first precoder and diagonal values of the second matrix.

    摘要翻译: 多输入多输出(MIMO)通信系统技术领域本发明涉及多输入多输出(MIMO)通信系统,更具体地说,涉及一种用于多小区无线通信系统中的相关矩阵反馈的方法。 在根据本发明的一个实施例的在多小区无线通信系统中考虑自适应反馈模式的移动站的相关矩阵反馈信息的传输方法包括:使用接收到的信号来测量移动站与服务基站之间的信道, 服务基站; 使用所测量的信道确定指示信道状态信息的第一矩阵和第一预编码器; 使用傅立叶矩阵和所述第一矩阵生成第二矩阵; 以及发送包括第一预编码器的信息和第二矩阵的对角线值中的至少一个的反馈信息。

    APPARATUS AND METHOD FOR TRANSMITTING SIGNAL IN WIRELESS COMMUNICATION SYSTEM
    53.
    发明申请
    APPARATUS AND METHOD FOR TRANSMITTING SIGNAL IN WIRELESS COMMUNICATION SYSTEM 有权
    无线通信系统信号发送装置及方法

    公开(公告)号:US20110268072A1

    公开(公告)日:2011-11-03

    申请号:US13143725

    申请日:2010-01-29

    IPC分类号: H04W72/04

    CPC分类号: H04B7/0452 H04B7/068

    摘要: An apparatus and method for transmitting signals in a wireless communication system are provided. The apparatus includes N antennas, a processor coupled to the N antennas and configured to generate N transmit signals by performing precoding on R spatial streams for R spatial layers, and to transmit the N transmit signals respectively through the N antennas, wherein an information stream, a reference signal sequence, and a reference signal pattern are allocated to each of the R spatial layers, and the reference signal pattern is a time-frequency resource pattern used for transmission of the reference signal sequence, wherein each of the R spatial streams corresponds to one spatial layer, and wherein each of the R spatial streams is generated based on the information stream, reference signal sequence, and reference signal pattern allocated to a corresponding spatial layer.

    摘要翻译: 提供了一种用于在无线通信系统中发送信号的装置和方法。 该装置包括N个天线,耦合到N个天线的处理器,并被配置为通过对R个空间层的R个空间流执行预编码并且分别通过N个天线发送N个发射信号来产生N个发射信号,其中信息流, 参考信号序列和参考信号模式被分配给每个R空间层,并且参考信号模式是用于参考信号序列的传输的时间 - 频率资源模式,其中每个R空间流对应于 一个空间层,并且其中基于分配给对应空间层的信息流,参考信号序列和参考信号模式来生成每个R空间流。

    Method of feedback information transmission, method and apparatus of data transmission in a wireless communication system having multiple antennas
    54.
    发明授权
    Method of feedback information transmission, method and apparatus of data transmission in a wireless communication system having multiple antennas 有权
    反馈信息传输方法,具有多个天线的无线通信系统中数据传输的方法和装置

    公开(公告)号:US08351535B2

    公开(公告)日:2013-01-08

    申请号:US13059150

    申请日:2009-08-13

    IPC分类号: H04B7/02

    CPC分类号: H04B7/0639 H04B7/0469

    摘要: A method of data transmission from a transmitter of a wireless communication system which uses multiple antennas comprises receiving identification information of a precoding matrix from a receiver, the precoding matrix being selected from a codebook generated using a plurality of first matrices generated by multiplying a discrete fourier transform (DFT) matrix by each of a plurality of phase shift matrices; precoding data to be transmitted, by using a precoding matrix indicated by the identification information; and transmitting the precoded data to the receiver by using the multiple antennas.

    摘要翻译: 从使用多个天线的无线通信系统的发射机进行数据传输的方法包括从接收机接收预编码矩阵的识别信息,所述预编码矩阵从使用多个第一矩阵生成的码本中选择,所述码本通过将离散傅立叶变换 通过多个相移矩阵中的每一个转换(DFT)矩阵; 通过使用由所述识别信息表示的预编码矩阵来预编码要发送的数据; 以及通过使用所述多个天线将所述预编码数据发送到所述接收机。

    METHOD FOR AVOIDING INTER-CELL INTERFERENCE IN MULTI-CELL ENVIRONMENT USING MULTIPLE CODEBOOKS
    55.
    发明申请
    METHOD FOR AVOIDING INTER-CELL INTERFERENCE IN MULTI-CELL ENVIRONMENT USING MULTIPLE CODEBOOKS 有权
    使用多个CODEBOOKS避免多细胞环境中的细胞间干扰的方法

    公开(公告)号:US20110105164A1

    公开(公告)日:2011-05-05

    申请号:US13002569

    申请日:2009-07-06

    IPC分类号: H04B15/00

    CPC分类号: H04B7/0417

    摘要: A method is disclosed for avoiding inter-cell interference in a closed-loop multiple-input multiple-output (MIMO) system using a plurality of codebooks. A base station of a serving cell transmits information about codebooks used in an interfering cell among the plurality of codebooks to a mobile station. The transmission of the information may be made at the request of the mobile station. Alternatively, the mobile station may directly measure information about codebooks used in the interfering cell among the plurality of codebooks. The mobile station measures restricted precoding matrix indexes (PMIs) or requested PMIs based on the codebook information. The measured PMIs are transmitted to the interfering cell and are used to restrict the use of a PMI in the interfering cell.

    摘要翻译: 公开了一种用于避免使用多个码本的闭环多输入多输出(MIMO)系统中的小区间干扰的方法。 服务小区的基站向移动台发送关于多个码本中的干扰小区中使用的码本的信息。 信息的发送可以根据移动台的请求进行。 或者,移动站可以直接测量关于多个码本之间的干扰小区中使用的码本的信息。 移动台基于码本信息来测量限制性预编码矩阵索引(PMI)或请求的PMI。 测量的PMI被传送到干扰小区,并用于限制干扰小区中PMI的使用。

    METHOD FOR AVOIDING INTER-CELL INTERFERENCE IN A MULTI-CELL ENVIRONMENT
    56.
    发明申请
    METHOD FOR AVOIDING INTER-CELL INTERFERENCE IN A MULTI-CELL ENVIRONMENT 有权
    用于避免多细胞环境中的细胞间干扰的方法

    公开(公告)号:US20110034192A1

    公开(公告)日:2011-02-10

    申请号:US12934220

    申请日:2009-03-30

    IPC分类号: H04W24/02

    摘要: A method for avoiding an inter-cell interference (ICI) in a multi-cell environment is disclosed. The method includes restricting the use of a PMI in an interfering cell so as to improve a reception performance of a mobile station located at an interfered cell edge. The mobile station measures a restricted-PMI of the interfering cell, which is prohibited from use in the interfering cell, and transmits the measured restricted PMI to the interfering cell. The use of the restricted PMI is prohibited from use in a mobile station in the interfering cell.

    摘要翻译: 公开了一种在多小区环境中避免小区间干扰(ICI)的方法。 该方法包括限制在干扰小区中使用PMI,以提高位于干扰小区边缘的移动台的接收性能。 移动站测量干扰小区的受限PMI,其被禁止在干扰小区中使用,并将测量的限制PMI发送到干扰小区。 禁止在干扰小区中的移动台中使用受限PMI。

    Method for transmitting and receiving signals using collaborative MIMO scheme
    57.
    发明申请
    Method for transmitting and receiving signals using collaborative MIMO scheme 有权
    使用协同MIMO方案发送和接收信号的方法

    公开(公告)号:US20090207822A1

    公开(公告)日:2009-08-20

    申请号:US12318437

    申请日:2008-12-29

    IPC分类号: H04W4/00 H04L27/00

    摘要: A method for reducing inter-cell interference and a method for transmitting a signal by a collaborative MIMO scheme, in a communication system having a multi-cell environment are disclosed. An example of a method for transmitting, by a mobile station, precoding information in a collaborative MIMO communication system includes determining a precoding matrix set including precoding matrices of one more base stations including a serving base station, based on signal strength of the serving base station, and transmitting information about the precoding matrix set to the serving base station. A mobile station in an edge of a cell performs a collaborative MIMO mode or inter-cell interference mitigation mode using the information about the precoding matrix set collaboratively with neighboring base stations.

    摘要翻译: 公开了一种在具有多小区环境的通信系统中减少小区间干扰的方法和通过协作MIMO方案发送信号的方法。 用于由移动站发送协作MIMO通信系统中的预编码信息的方法的示例包括基于服务基站的信号强度来确定包括包括服务基站的多个基站的预编码矩阵的预编码矩阵集合 并且将关于预编码矩阵集的信息发送到服务基站。 小区边缘的移动台使用与相邻基站协作的关于预编码矩阵集的信息执行协同MIMO模式或小区间干扰减轻模式。

    Method for transmitting and receiving signals using collaborative MIMO scheme
    58.
    发明授权
    Method for transmitting and receiving signals using collaborative MIMO scheme 有权
    使用协同MIMO方案发送和接收信号的方法

    公开(公告)号:US08705404B2

    公开(公告)日:2014-04-22

    申请号:US13287032

    申请日:2011-11-01

    IPC分类号: H04W72/04 H04W28/12 H04W24/02

    摘要: A method for reducing inter-cell interference and a method for transmitting a signal by a collaborative MIMO scheme, in a communication system having a multi-cell environment are disclosed. An example of a method for transmitting, by a mobile station, precoding information in a collaborative MIMO communication system includes determining a precoding matrix set including precoding matrices of one more base stations including a serving base station, based on signal strength of the serving base station, and transmitting information about the precoding matrix set to the serving base station. A mobile station in an edge of a cell performs a collaborative MIMO mode or inter-cell interference mitigation mode using the information about the precoding matrix set collaboratively with neighboring base stations.

    摘要翻译: 公开了一种在具有多小区环境的通信系统中减少小区间干扰的方法和通过协作MIMO方案发送信号的方法。 用于由移动站发送协作MIMO通信系统中的预编码信息的方法的示例包括基于服务基站的信号强度来确定包括包括服务基站的多个基站的预编码矩阵的预编码矩阵集合 并且将关于预编码矩阵集的信息发送到服务基站。 小区边缘的移动台使用与相邻基站协作的关于预编码矩阵集的信息执行协同MIMO模式或小区间干扰减轻模式。

    METHOD FOR REDUCING INTER-CELL INTERFERENCE
    59.
    发明申请
    METHOD FOR REDUCING INTER-CELL INTERFERENCE 有权
    减少细胞间干扰的方法

    公开(公告)号:US20120108278A1

    公开(公告)日:2012-05-03

    申请号:US13345506

    申请日:2012-01-06

    IPC分类号: H04B15/00

    摘要: A method for reducing inter-cell interference and a method for transmitting a signal by a collaborative MIMO scheme, in a communication system having a multi-cell environment are disclosed. An example of a method for transmitting, by a mobile station, precoding information in a collaborative MIMO communication system includes determining a precoding matrix set including precoding matrices of one more base stations including a serving base station, based on signal strength of the serving base station, and transmitting information about the precoding matrix set to the serving base station. A mobile station in an edge of a cell performs a collaborative MIMO mode or inter-cell interference mitigation mode using the information about the precoding matrix set collaboratively with neighboring base stations.

    摘要翻译: 公开了一种在具有多小区环境的通信系统中减少小区间干扰的方法和通过协作MIMO方案发送信号的方法。 用于由移动站发送协作MIMO通信系统中的预编码信息的方法的示例包括基于服务基站的信号强度来确定包括包括服务基站的多个基站的预编码矩阵的预编码矩阵集合 并且将关于预编码矩阵集的信息发送到服务基站。 小区边缘的移动台使用与相邻基站协作的关于预编码矩阵集的信息执行协同MIMO模式或小区间干扰减轻模式。

    Collaborative mimo using sounding channel in multi-cell environment
    60.
    发明申请
    Collaborative mimo using sounding channel in multi-cell environment 有权
    在多小区环境中使用声音通道的协作mimo

    公开(公告)号:US20100002607A1

    公开(公告)日:2010-01-07

    申请号:US12453562

    申请日:2009-05-14

    IPC分类号: H04J3/00 H04W4/00 H04B7/02

    摘要: A collaborative MIMO method using a sounding channel in a multi-cell environment is disclosed. The method includes acquiring, by a first base station providing a service for a first cell, first CSI of a first downlink channel between the first base station and a mobile station, transmitting, to a second base station, a signal including information requesting that the second base station providing a service for a second cell acquire second CSI of a second downlink channel between the second base station and the mobile station, and acquiring, by the second base station, the second CSI. The mobile station is served by the first base station.

    摘要翻译: 公开了一种在多小区环境中使用探测信道的协作MIMO方法。 该方法包括:由第一基站提供第一小区的业务的第一基站获取第一基站与移动站之间的第一下行链路信道的第一CSI,向第二基站发送包括请求信令的信息的信号 为第二小区提供服务的第二基站在第二基站和移动站之间获取第二下行链路信道的第二CSI,并且由第二基站获取第二CSI。 移动台由第一基站服务。