公开(公告)号：US09030952B2

公开(公告)日：2015-05-12

申请号：US13362971

申请日：2012-01-31

申请人： Eun-Seok Ko ,  Chung-Yong Lee ,  Myoung-Seok Kim ,  Mi-Sun Yoon ,  Yung-Soo Kim ,  June Moon

发明人： Eun-Seok Ko ,  Chung-Yong Lee ,  Myoung-Seok Kim ,  Mi-Sun Yoon ,  Yung-Soo Kim ,  June Moon

IPC分类号： H04L12/26 ,  H04W72/04 ,  H04B7/04 ,  H04W72/08

CPC分类号： H04W72/0433 ,  H04B7/0413 ,  H04W72/082

摘要： An apparatus and method are provided for precoding by limited cooperation in a wireless communication system. A method of data precoding by a Base Station (BS) in a wireless communication system includes determining a Channel Quality Indicator (CQI) parameter indicating channel size information between the BS and a User Equipment (UE) served by the BS; transmitting the determined CQI parameter through a backhaul to a central unit; receiving, from the central unit, a weight factor based on a CQI parameter from each cell; and determining a precoding vector based on the weight factor. The weight factor represents a relative ratio of an inter-cell environment that is to be interfered by the BS.

摘要翻译： 提供了一种用于通过无线通信系统中的有限协作进行预编码的装置和方法。 在无线通信系统中由基站（BS）进行数据预编码的方法包括确定指示BS与由BS服务的用户设备（UE）之间的信道大小信息的信道质量指示符（CQI）参数; 通过回程将确定的CQI参数发送到中央单元; 从所述中央单元接收来自每个小区的基于CQI参数的权重因子; 以及基于所述权重因子确定预编码向量。 权重因子表示要被BS干扰的小区间环境的相对比例。

公开(公告)号：US20100048233A1

公开(公告)日：2010-02-25

申请号：US12583417

申请日：2009-08-20

申请人： Yu-Seok Kim ,  Eun-Yong Kim ,  Yung-Soo Kim ,  Sang-Min Lee ,  Eun-Seok Ko

发明人： Yu-Seok Kim ,  Eun-Yong Kim ,  Yung-Soo Kim ,  Sang-Min Lee ,  Eun-Seok Ko

IPC分类号： H04B15/00

CPC分类号： H04W4/20

摘要： A Mobile Station (MS) is operable to select a precoding matrix in a multi-antenna wireless communication system. The method includes receiving, from a serving Base Station (BS), information on a precoding matrix of which use is prohibited and a precoding matrix to be used by a neighbor BS, estimating an interference signal for the precoding matrix to be used by the neighbor BS, and selecting a precoding matrix to be used by the serving BS by considering the estimated interference signal from the remaining precoding matrixes except for the precoding matrix of which use is prohibited among precoding matrixes used by the serving BS.

摘要翻译： 移动站（MS）可操作以在多天线无线通信系统中选择预编码矩阵。 该方法包括从服务基站（BS）接收关于禁止使用的预编码矩阵的信息和由邻居BS使用的预编码矩阵，估计由邻居使用的预编码矩阵的干扰信号 BS，并且通过考虑来自剩余的预编码矩阵的估计干扰信号，并且由服务BS使用的预编码矩阵，除了由服务BS使用的预编码矩阵之中禁止使用的预编码矩阵之外，选择预编码矩阵。

公开(公告)号：US08862070B2

公开(公告)日：2014-10-14

申请号：US12583417

申请日：2009-08-20

申请人： Yu-Seok Kim ,  Eun-Yong Kim ,  Yung-Soo Kim ,  Sang-Min Lee ,  Eun-Seok Ko

发明人： Yu-Seok Kim ,  Eun-Yong Kim ,  Yung-Soo Kim ,  Sang-Min Lee ,  Eun-Seok Ko

IPC分类号： H04B7/00 ,  H04W4/20

CPC分类号： H04W4/20

摘要： A Mobile Station (MS) is operable to select a precoding matrix in a multi-antenna wireless communication system. The method includes receiving, from a serving Base Station (BS), information on a precoding matrix of which use is prohibited and a precoding matrix to be used by a neighbor BS, estimating an interference signal for the precoding matrix to be used by the neighbor BS, and selecting a precoding matrix to be used by the serving BS by considering the estimated interference signal from the remaining precoding matrixes except for the precoding matrix of which use is prohibited among precoding matrixes used by the serving BS.

摘要翻译： 移动站（MS）可操作以在多天线无线通信系统中选择预编码矩阵。 该方法包括从服务基站（BS）接收关于禁止使用的预编码矩阵的信息和由邻居BS使用的预编码矩阵，估计由邻居使用的预编码矩阵的干扰信号 BS，并且通过考虑来自剩余的预编码矩阵的估计干扰信号，并且由服务BS使用的预编码矩阵，除了由服务BS使用的预编码矩阵之中禁止使用的预编码矩阵之外，选择预编码矩阵。

公开(公告)号：US20120195219A1

公开(公告)日：2012-08-02

申请号：US13362971

申请日：2012-01-31

申请人： Eun-Seok Ko ,  Chung-Yong Lee ,  Myoung-Seok Kim ,  Mi-Sun Yoon ,  Yung-Soo Kim ,  June Moon

发明人： Eun-Seok Ko ,  Chung-Yong Lee ,  Myoung-Seok Kim ,  Mi-Sun Yoon ,  Yung-Soo Kim ,  June Moon

IPC分类号： H04W72/04 ,  H04W4/00 ,  H04W24/00

CPC分类号： H04W72/0433 ,  H04B7/0413 ,  H04W72/082

摘要： An apparatus and method are provided for precoding by limited cooperation in a wireless communication system. A method of data precoding by a Base Station (BS) in a wireless communication system includes determining a Channel Quality Indicator (CQI) parameter indicating channel size information between the BS and a User Equipment (UE) served by the BS; transmitting the determined CQI parameter through a backhaul to a central unit; receiving, from the central unit, a weight factor based on a CQI parameter from each cell; and determining a precoding vector based on the weight factor. The weight factor represents a relative ratio of an inter-cell environment that is to be interfered by the BS.

摘要翻译： 提供了一种用于通过无线通信系统中的有限协作进行预编码的装置和方法。 在无线通信系统中由基站（BS）进行数据预编码的方法包括确定指示BS与由BS服务的用户设备（UE）之间的信道大小信息的信道质量指示符（CQI）参数; 通过回程将确定的CQI参数发送到中央单元; 从所述中央单元接收来自每个小区的基于CQI参数的权重因子; 以及基于所述权重因子确定预编码向量。 权重因子表示要被BS干扰的小区间环境的相对比例。

公开(公告)号：US07693041B2

公开(公告)日：2010-04-06

申请号：US11873251

申请日：2007-10-16

申请人： Pan-Yuh Joo ,  Dae-Eop Kang ,  Eun-Seok Ko ,  Dae-Sik Hong

发明人： Pan-Yuh Joo ,  Dae-Eop Kang ,  Eun-Seok Ko ,  Dae-Sik Hong

IPC分类号： H04J11/00 ,  H04J1/00 ,  H04L12/28 ,  H04L12/56 ,  H04K1/10 ,  H04L27/28

CPC分类号： H04L27/2607 ,  H04L1/0618

摘要： A mobile communication system for modulating input data with a specific size into an OFDM (Orthogonal Frequency Division Multiplexing) symbol and transmitting the OFDM symbol through at least two different antennas. A replica generator generates replica data by cyclically-circulating the input data. An encoder generates a first antenna signal and a second antenna signal by encoding the input data and the replica data. A first IFFT (Inverse Fast Fourier Transform) block generates a first OFDM symbol by performing IFFT on the first antenna signal, and a second IFFT block generates a second OFDM symbol by performing IFFT on the second antenna signal. A first antenna transmits the first OFDM symbol, and a second antenna transmits the second OFDM symbol.

摘要翻译： 一种用于将具有特定尺寸的输入数据调制成OFDM（正交频分复用）符号并通过至少两个不同天线发送OFDM符号的移动通信系统。 复制生成器通过循环输入数据来生成副本数据。 编码器通过对输入数据和副本数据进行编码来生成第一天线信号和第二天线信号。 第一IFFT（快速傅里叶逆变换）块通过对第一天线信号执行IFFT产生第一OFDM符号，第二IFFT块通过对第二天线信号执行IFFT来产生第二OFDM符号。 第一天线发送第一OFDM符号，第二天线发送第二OFDM符号。

公开(公告)号：US07483366B2

公开(公告)日：2009-01-27

申请号：US10292065

申请日：2002-11-12

申请人： Pan-Yuh Joo ,  Dae-Eop Kang ,  Eun-Seok Ko ,  Dae-Sik Hong

发明人： Pan-Yuh Joo ,  Dae-Eop Kang ,  Eun-Seok Ko ,  Dae-Sik Hong

IPC分类号： H04J11/00 ,  H04J1/00 ,  H04K1/10 ,  H04L27/28

CPC分类号： H04L1/08 ,  H04L1/0618 ,  H04L27/2602

摘要： A mobile communication system modulates input data with a specific size into an OFDM symbol and transmits the OFDM symbol through an antenna. In the mobile communication system, a replica generator generates OFDM symbol data by cyclic-circulating the input data by a predetermined cyclic circulation distance d, and outputs a stream of the input data and the replica data as a data stream.

摘要翻译： 移动通信系统将具有特定大小的输入数据调制成OFDM符号，并通过天线发送OFDM码元。 在移动通信系统中，复制发生器通过使输入数据循环循环预定的循环循环距离d来生成OFDM符号数据，并输出输入数据流和副本数据作为数据流。

公开(公告)号：US20060176993A1

公开(公告)日：2006-08-10

申请号：US11346698

申请日：2006-02-03

申请人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Dae-Sik Hong ,  Eun-Seok Ko

发明人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Dae-Sik Hong ,  Eun-Seok Ko

IPC分类号： H04L7/00

CPC分类号： H04L1/0618 ,  H04B7/0417 ,  H04B7/061 ,  H04B7/0626 ,  H04B7/0691

摘要： A signal transmission method for a multiple input multiple output (MIMO) communication system. A transmitter having a plurality of transmission antennas receives antenna selection information from a receiver having at least one reception antenna. The transmitter selects at least two transmission antennas based on the antenna selection information, beamforms space-time block coding (STBC)-coded input signals with a weighting matrix, and transmits the beamformed signals via the selected transmission antennas. The antenna selection information is generated based on exact channel characteristics and statistical channel characteristics for the transmission antennas and a spatial correlation between the transmission antennas.

摘要翻译： 一种用于多输入多输出（MIMO）通信系统的信号传输方法。 具有多个发送天线的发射机从具有至少一个接收天线的接收机接收天线选择信息。 发射机基于天线选择信息来选择至少两个发射天线，波束形成具有加权矩阵的时空块编码（STBC）编码的输入信号，并且经由所选择的发射天线发射波束形成的信号。 天线选择信息是基于发射天线的精确信道特性和统计信道特性以及发射天线之间的空间相关来产生的。

公开(公告)号：US10708818B2

公开(公告)日：2020-07-07

申请号：US13206886

申请日：2011-08-10

申请人： Eun-Yong Kim ,  June Moon ,  Chung-Ryul Chang ,  Young-Ky Kim ,  Eun-Seok Ko

发明人： Eun-Yong Kim ,  June Moon ,  Chung-Ryul Chang ,  Young-Ky Kim ,  Eun-Seok Ko

IPC分类号： H04W28/08 ,  H04W88/08

摘要： Apparatuses and methods for transmitting and receiving signals in a mobile communication system are provided. A method for transmitting a signal by an evolved Node B (eNB) in a mobile communication system includes transmitting a same control channel signal to each of a plurality of Radio Units (RUs), and transmitting a different data channel signal to each of the plurality of RUs. A data channel signal transmitted to each of the plurality of RUs may be determined taking into account at least one of a location of a User Equipment (UE) that will receive the data channel signal, and load balancing.

公开(公告)号：US08520759B2

公开(公告)日：2013-08-27

申请号：US12384196

申请日：2009-04-01

申请人： Eun-Yong Kim ,  Ju-Mi Lee ,  Eun-Seok Ko ,  Sung-Soo Kim ,  Joo-Hwan Chun

发明人： Eun-Yong Kim ,  Ju-Mi Lee ,  Eun-Seok Ko ,  Sung-Soo Kim ,  Joo-Hwan Chun

IPC分类号： H04B7/02

CPC分类号： H04L1/0009 ,  H03M13/29 ,  H03M13/2957 ,  H03M13/353 ,  H03M13/356 ,  H03M13/6306 ,  H04L1/005 ,  H04L1/0058 ,  H04L1/0065 ,  H04L1/06 ,  H04L25/067 ,  H04L2025/03426

摘要： An apparatus and method for detecting signals based on a Lattice Reduction (LR) algorithm in a Multiple Input Multiple Output (MIMO) wireless communication system are provided. The apparatus includes a plurality of operators for determining soft-decision values for respective streams by performing a soft modulo operation on respective symbol values included in a Receive (Rx) signal block multiplied by a lattice transformation matrix T, a plurality of inner decoders for determining Log Likelihood Ratio (LLR) values of codewords according to coding schemes for the respective streams by decoding the soft-decision values for the respective streams according to identical decoding scheme, a passer for restoring the LLR values representing the codewords generated in a transmitting end using the LLR values, and a plurality of outer decoders for determining LLR values of Transmit (Tx) bitstreams for the respective streams by decoding the LLR values representing the codewords generated in the transmitting end for the respective streams according to decoding schemes for the respective streams.

公开(公告)号：US20100248729A1

公开(公告)日：2010-09-30

申请号：US12661916

申请日：2010-03-26

申请人： Tak-Ki Yu ,  Eun-Seok Ko ,  Yu-Seok Kim ,  Joo-Hwan Chun ,  Hyun-Jong Yang

发明人： Tak-Ki Yu ,  Eun-Seok Ko ,  Yu-Seok Kim ,  Joo-Hwan Chun ,  Hyun-Jong Yang

IPC分类号： H04W72/04

CPC分类号： H04B7/0854 ,  H04B7/026

摘要： An apparatus for use in a relay wireless communication system is capable of bidirectional relaying with precoding. A Base Station (BS) includes a plurality of antennas. The BS can receive a relay signal that includes a transmit symbol vector of the BS and a transmit symbol vector of a Mobile Station (MS) from a Relay Station. The BS determines power difference values corresponding to all of symbol vectors available as the transmit symbol vector of the MS. The BS further determines the transmit symbol vector of the MS or per bit Log Likelihood Ratios using the power difference values.

摘要翻译： 用于中继无线通信系统的装置能够通过预编码进行双向中继。 基站（BS）包括多个天线。 BS可以从中继站接收包括BS的发射符号向量和移动站（MS）的发射符号向量的中继信号。 BS确定对应于可用作MS的发射符号向量的所有符号向量的功率差值。 BS还使用功率差值来确定MS的发射符号向量或每比特对数似然比。