公开(公告)号：US08325841B2

公开(公告)日：2012-12-04

申请号：US12382631

申请日：2009-03-19

Applicant: Moon Il Lee ,  Hyun Soo Ko ,  Bin Chul Ihm ,  Wook Bong Lee ,  Jae Hoon Chung

Inventor： Moon Il Lee ,  Hyun Soo Ko ,  Bin Chul Ihm ,  Wook Bong Lee ,  Jae Hoon Chung

IPC: H04B7/02 ,  H04L1/02

CPC classification number: H04B7/0417 ,  H04B7/0456 ,  H04B7/0639 ,  H04B7/0658

Abstract: A method for transmitting signals to reduce feedback overhead and a method for transmitting feedback information for the same are described. In transmitting signals through precoding, different codebook subsets are used in an open-loop transmission mode and a closed-loop transmission mode, thereby reducing feedback overhead. In this case, it is assumed that the codebook subsets for the respective transmission modes are optimized according to each transmission mode.

Abstract translation: 描述用于传送信号以减少反馈开销的方法和用于发送反馈信息的方法。 在通过预编码发送信号时，在开环传输模式和闭环传输模式中使用不同的码本子集，从而减少了反馈开销。 在这种情况下，假设根据每种传输模式优化用于各个传输模式的码本子集。

公开(公告)号：US20120300726A1

公开(公告)日：2012-11-29

申请号：US13521710

申请日：2011-01-14

Applicant: Seung Hee Han ,  Jae Hoon Chung ,  Sung Ho Moon ,  Moon Il Lee

Inventor： Seung Hee Han ,  Jae Hoon Chung ,  Sung Ho Moon ,  Moon Il Lee

IPC: H04J11/00

CPC classification number: H04W72/0413 ,  H04L5/001 ,  H04L5/0026 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0094 ,  H04L27/2636 ,  H04L27/2697 ,  H04W4/00 ,  H04W72/02

Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for transmitting control signal via a PUCCH in a wireless communication system, and to an apparatus for the method, wherein the method comprises the following steps: joint-coding a plurality of pieces of control information to obtain a single codeword; obtaining a first modulation symbol sequence from the single codeword; obtaining, from the first modulation symbol sequence, a plurality of second modulation symbol sequences corresponding to each slot in the PUCCH; cyclically shifting the plurality of second modulation symbol sequences in a time domain to obtain a plurality of third modulation symbol sequences; performing a discrete Fourier transform (DFT) precoding process on the plurality of third modulation symbol sequences to obtain a plurality of complex symbol sequences in a frequency domain; and transmitting the plurality of complex symbol sequences via the PUCCH.

Abstract translation: 无线通信系统技术领域本发明涉及一种无线通信系统。 更具体地，本发明涉及一种用于在无线通信系统中经由PUCCH发送控制信号的方法以及用于该方法的装置，其中该方法包括以下步骤：将多条控制信息共同编码为 获得单个码字; 从单个码字获得第一调制符号序列; 从所述第一调制符号序列获得与所述PUCCH中的每个时隙对应的多个第二调制符号序列; 在时域中循环移位多个第二调制符号序列以获得多个第三调制符号序列; 对所述多个第三调制符号序列执行离散傅里叶变换（DFT）预编码处理，以获得频域中的多个复符号序列; 以及经由所述PUCCH发送所述多个复符号序列。

公开(公告)号：US08315325B2

公开(公告)日：2012-11-20

申请号：US12676110

申请日：2008-09-05

Applicant: Moon Il Lee ,  Bin Chul Ihm ,  Hyun Soo Ko ,  Jin Young Chun ,  Wook Bong Lee ,  Jae Hoon Chung

Inventor： Moon Il Lee ,  Bin Chul Ihm ,  Hyun Soo Ko ,  Jin Young Chun ,  Wook Bong Lee ,  Jae Hoon Chung

IPC: H04B7/02 ,  H04L1/02

CPC classification number: H04B7/0417 ,  H04B7/0478 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639 ,  H04L1/0029 ,  H04L1/06 ,  H04L5/0023

Abstract: A method for transmitting a multiple codeword (MCW) in a Multiple Input Multiple Output (MIMO) communication system is disclosed. A method for transmitting a multiple codeword (MCW) in a Multiple-Input Multiple-Output (MIMO) communication system includes performing a channel coding and modulation process for each codeword of the multiple codeword (MCW), multiplying the channel-coded-modulated result by a rotation matrix decided by either a spatial multiplexing rate or a layer (R), and performing a codeword permutation (CP) on the multiple codeword (MCW), performing a MIMO encoding on the multiple codeword (MCW), and transmitting the multiple codeword (MCW) via a multi-antenna.

Abstract translation: 公开了一种在多输入多输出（MIMO）通信系统中发送多码字（MCW）的方法。 一种用于在多输入多输出（MIMO）通信系统中发送多码字（MCW）的方法包括对多码字（MCW）的每个码字进行信道编码和调制处理，将信道编码调制结果 通过由空间复用速率或层（R）决定的旋转矩阵，以及在所述多个码字（MCW）上执行码字排列（CP），对所述多个码字（MCW）执行MIMO编码，并且发送所述多个 码字（MCW）。

公开(公告)号：US20120269138A1

公开(公告)日：2012-10-25

申请号：US13390508

申请日：2011-01-14

Applicant: Seung Hee Han ,  Sung Ho Moon ,  Jae Hoon Chung ,  Moon Il Lee ,  Hyun Woo Lee

Inventor： Seung Hee Han ,  Sung Ho Moon ,  Jae Hoon Chung ,  Moon Il Lee ,  Hyun Woo Lee

IPC: H04W72/04

CPC classification number: H04W72/0413 ,  H04B7/068 ,  H04L1/0057 ,  H04L1/0073 ,  H04L1/1671 ,  H04L5/001 ,  H04L5/0026 ,  H04L5/0053 ,  H04L5/0055 ,  H04L27/2636 ,  H04L27/2697

Abstract: The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting a signal via physical uplink control channel (PUCCH) in a wireless communication system, and to an apparatus for the method, wherein the method is configured such that a terminal transmits a signal via the PUCCH and multiple antennas, and comprises the following steps: obtaining a first modulated symbol sequence from control information; performing a spreading process on modulated symbols corresponding to each of the slots in the PUCCH from among the first modulated symbol sequence, such that the modulated symbols corresponding to the respective single carrier frequency division multiplexing (SC-FDMA) symbols in the relevant slot, so as to obtain a plurality of spread second modulated symbol sequences corresponding to the respective SC-FDMA symbols in each slot; and transmitting, in the relevant SC-FDMA symbols in the PUCCH, the plurality of spread second modulated symbol sequences via multiple antennas, wherein resources used in the transmission via the PUCCH are orthogonal to one another between antenna ports.

Abstract translation: 无线通信系统技术领域本发明涉及一种无线通信系统。 更具体地说，本发明涉及一种用于在无线通信系统中经由物理上行链路控制信道（PUCCH）发送信号的方法以及用于该方法的装置，其中该方法被配置为使得终端经由 PUCCH和多个天线，并且包括以下步骤：从控制信息获得第一调制符号序列; 对与第一调制符号序列中的PUCCH中的每个时隙对应的调制符号执行扩频处理，使得与相关时隙中的相应单载波频分复用（SC-FDMA）符号相对应的调制符号，因此 以获得对应于每个时隙中的相应SC-FDMA符号的多个扩展的第二调制符号序列; 并且经由多个天线在PUCCH中的相关SC-FDMA符号中发送多个扩展的第二调制符号序列，其中在经由PUCCH的传输中使用的资源在天线端口之间彼此正交。

公开(公告)号：US20120220327A1

公开(公告)日：2012-08-30

申请号：US13508334

申请日：2010-11-04

Applicant: Moon Il Lee ,  Bin Chul Ihm ,  Hyun Soo Ko ,  Jae Hoon Chung

Inventor： Moon Il Lee ,  Bin Chul Ihm ,  Hyun Soo Ko ,  Jae Hoon Chung

IPC: H04W72/04

CPC classification number: H04W72/1273 ,  H04W24/10

Abstract: A base station in a wireless communication system transmits a CSI-RS of a cell every 1×N subframes or 1×N ms with muting CSI-RS REs of a neighboring cell every m×N subframes. A BS can estimate channel state of the neighboring cell with higher accuracy by using a CSI-RS of the neighboring cell received in the muted REs.

Abstract translation: 无线通信系统中的基站每m×N个子帧每隔1×N个子帧或1×N ms发送相邻小区的抑制CSI-RS RE的小区的CSI-RS。 BS可以通过使用在静音RE中接收的相邻小区的CSI-RS来更高精度地估计相邻小区的信道状态。

公开(公告)号：US08233559B2

公开(公告)日：2012-07-31

申请号：US12403298

申请日：2009-03-12

Applicant: Hyun Soo Ko ,  Jin-young Chun ,  Moon Il Lee ,  Bin Chul Ihm ,  Wook Bong Lee

Inventor： Hyun Soo Ko ,  Jin-young Chun ,  Moon Il Lee ,  Bin Chul Ihm ,  Wook Bong Lee

IPC: H04L1/02

CPC classification number: H04L5/005 ,  H04B7/0413 ,  H04L5/0051 ,  H04L5/0053 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03802 ,  H04W52/325

Abstract: A method of transmitting a pilot method in a multi-antenna system is provided. The method comprises generating a preceding matrix including a preceding vector, the preceding vector being applied to each of data streams to be transmitted, performing preceding procedure for a pilot by using the preceding matrix, and transmitting the precoded pilot, wherein transmission power of the precoded pilot is determined specifically to the each of the data streams. The transmission power of a precoded pilot can be controlled adaptively, individually and independently for each channel to improve channel estimation performance.

Abstract translation: 提供了一种在多天线系统中发送导频方法的方法。 该方法包括：生成包括先前向量的前一矩阵，将前一向量应用于要发送的每个数据流，通过使用先前矩阵对导频执行先前过程，并发送预编码导频，其中预编码的发射功率 专门针对每个数据流确定导频。 预编码导频的发射功率可以针对每个信道进行单独和独立的自适应控制，以改善信道估计性能。

公开(公告)号：US08218667B2

公开(公告)日：2012-07-10

申请号：US12311286

申请日：2007-11-15

Applicant: Wook Bong Lee ,  Bin Chul Ihm ,  Moon Il Lee ,  Hyun Soo Ko ,  Jae Wan Kim ,  Jin Young Chun

Inventor： Wook Bong Lee ,  Bin Chul Ihm ,  Moon Il Lee ,  Hyun Soo Ko ,  Jae Wan Kim ,  Jin Young Chun

IPC: H04L1/02

CPC classification number: H04B7/0426 ,  H04B7/0465 ,  H04B7/082 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L5/023 ,  H04L25/0202 ,  H04L25/0242 ,  H04L25/03343 ,  H04L2001/0093

Abstract: A data transmission method for multiple users having multiple receive antennas is provided. The method includes selecting a receive antenna among the multiple receive antennas for each user, performing DPC (Dirty Paper Coding) from the multiple transmit antennas to the receive antenna and transmitting a transmission signal on which the DPC is performed. Since DPC is implemented through a receive antenna selected among multiple receive antennas, complexity is not much increased although the DPC is applied to a MIMO system.

Abstract translation: 提供了具有多个接收天线的多个用户的数据传输方法。 该方法包括为每个用户选择多个接收天线之间的接收天线，从多个发射天线执行DPC（脏纸编码）到接收天线，并发送执行DPC的发射信号。 由于DPC是通过在多个接收天线中选择的接收天线来实现的，尽管将DPC应用于MIMO系统，复杂度并不大。

公开(公告)号：US08213530B2

公开(公告)日：2012-07-03

申请号：US13092884

申请日：2011-04-22

Applicant: Moon Il Lee ,  Bin Chul Ihm ,  Jae Wan Kim ,  Sung Ho Park ,  Wook Bong Lee

Inventor： Moon Il Lee ,  Bin Chul Ihm ,  Jae Wan Kim ,  Sung Ho Park ,  Wook Bong Lee

IPC: H04B7/02

CPC classification number: H04B7/0671 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/1816 ,  H04L5/0023 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  Y02D50/10

Abstract: According to one embodiment, a method of receiving signals from a transmitter having a plurality of antennas includes: receiving the signals from the transmitter; selecting a precoding matrix based on a multiplexing rate (R) by selecting R column vectors from a single matrix corresponding to a maximum multiplexing rate, wherein the maximum multiplexing rate corresponds to a number (Nt) of the plurality of antennas, wherein each column vector of a first precoding matrix corresponding to a first multiplexing rate is included as a part of column vectors of a second precoding matrix corresponding to a second multiplexing rate when the second multiplexing rate is greater than the first multiplexing rate; and processing the received signals using the selected precoding matrix.

Abstract translation: 根据一个实施例，一种从具有多个天线的发射机接收信号的方法包括：从发射机接收信号; 通过从对应于最大复用率的单个矩阵中选择R列向量，基于多路复用率（R）来选择预编码矩阵，其中最大复用速率对应于多个天线的数目（Nt），其中每个列向量 在第二复用率大于第一多路复用速率时，包括对应于第一复用速率的第一预编码矩阵作为与第二复用率相对应的第二预编码矩阵的列向量的一部分; 以及使用所选择的预编码矩阵来处理所接收的信号。

公开(公告)号：US20120163335A1

公开(公告)日：2012-06-28

申请号：US13392225

申请日：2010-10-18

Applicant: Jae Hoon Chung ,  Moon Il Lee ,  Sung Ho Moon

Inventor： Jae Hoon Chung ,  Moon Il Lee ,  Sung Ho Moon

IPC: H04W72/04

CPC classification number: H04L5/0023 ,  H04L5/0026 ,  H04L5/0028 ,  H04L5/0032 ,  H04L5/0037 ,  H04L5/0051 ,  H04L5/0073

Abstract: A method for transmitting a demodulation reference signal (DMRS) for down-link multi-user MIMO transmission according to an embodiment of the present invention comprises the steps of: mapping a DMRS for a first layer on a down-link physical resource block according to a first DMRS pattern; mapping a DMRS for a second layer on the down-link physical resource block according to a second DMRS pattern; and transmitting the down-link physical resource block. In the down-link physical resource block, a resource element corresponding to the second DMRS pattern can be punctured on the first layer and a resource element corresponding to the first DMRS pattern can be punctured on the first layer and a resource element corresponding to the first DMRS pattern can be punctured on the second layer.

Abstract translation: 根据本发明的实施例的用于发送用于下行链路多用户MIMO传输的解调参考信号（DMRS）的方法包括以下步骤：根据下行链路物理资源块映射第一层的DMRS，根据 第一个DMRS模式; 根据第二DMRS模式在下行链路物理资源块上映射第二层的DMRS; 并发送下行链路物理资源块。 在下行链路物理资源块中，可以在第一层上对与第二DMRS模式相对应的资源元素进行删截，并且可以在第一层上对与第一DMRS模式相对应的资源元素进行删截，并且对应于第一层的资源元素 DMRS图案可以在第二层上进行穿孔。

公开(公告)号：US20120127963A1

公开(公告)日：2012-05-24

申请号：US13388448

申请日：2010-08-13

Applicant: Hyun Soo Ko ,  Seung Hee Han ,  Jae Hoon Chung ,  Bin Chul Ihm ,  Moon Il Lee

Inventor： Hyun Soo Ko ,  Seung Hee Han ,  Jae Hoon Chung ,  Bin Chul Ihm ,  Moon Il Lee

IPC: H04B7/216 ,  H04W72/04 ,  H04B7/208 ,  H04W92/00

CPC classification number: H04L5/0048 ,  H04B7/0413 ,  H04B7/0626 ,  H04B7/216 ,  H04J13/004 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0057 ,  H04L5/0094 ,  H04L25/0224 ,  H04L27/2601 ,  H04L27/2613 ,  H04W52/325 ,  H04W72/02 ,  H04W72/04 ,  H04W72/085

Abstract: A method for transmitting a channel status information reference signals (CSI-RSs) for a maximum of eight antenna ports includes mapping the CSI-RSs for a maximum of eight antenna ports onto a data region of a downlink subframe having a normal cyclic prefix (CP) configuration according to a predetermined pattern; and transmitting the downlink subframe to which the CSI-RSs mapped, wherein the predetermined pattern defines the CSI-RSs to be mapped onto two OFDM symbols of the data region in the downlink subframe and mapped to at least one of four subcarrier positions in each of the two OFDM symbols, and wherein the four subcarrier positions defined by the predetermined pattern may be two consecutive subcarrier positions and two other consecutive subcarrier positions spaced apart by four subcarriers.

Abstract translation: 用于发送用于最多八个天线端口的信道状态信息参考信号（CSI-RS）的方法包括将最多八个天线端口的CSI-RS映射到具有正常循环前缀（CP）的下行链路子帧的数据区域 ）配置; 以及发送CSI-RS所映射的下行链路子帧，其中，所述预定模式定义要映射到所述下行链路子帧中的所述数据区域的两个OFDM符号上的CSI-RS，并被映射到每一个中的四个子载波位置中的至少一个 两个OFDM符号，并且其中由预定模式定义的四个子载波位置可以是两个连续的子载波位置和两个其它连续的子载波位置，其间隔四个子载波。