公开(公告)号：US20110299622A1

公开(公告)日：2011-12-08

申请号：US13141207

申请日：2010-02-09

Applicant: Xu Jian ,  Ja Ho Koo ,  Bin Chul Ihm ,  Wook Bong Lee

Inventor： Xu Jian ,  Ja Ho Koo ,  Bin Chul Ihm ,  Wook Bong Lee

IPC: H04L27/00

CPC classification number: H04B7/0621 ,  H04B7/0663

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20110280291A1

公开(公告)日：2011-11-17

申请号：US13109963

申请日：2011-05-17

Applicant: Bin Chul Ihm ,  Wook Bong Lee ,  Moon Il Lee ,  Jin Young Chun

Inventor： Bin Chul Ihm ,  Wook Bong Lee ,  Moon Il Lee ,  Jin Young Chun

IPC: H04B1/38 ,  H04L27/06 ,  H04L27/04

CPC classification number: H04B7/0417 ,  H04B7/0465 ,  H04B7/0626 ,  H04B7/0639 ,  H04B7/066 ,  H04B7/0671 ,  H04L1/06 ,  H04L1/1893 ,  H04L5/0023 ,  H04L5/0044 ,  H04L25/0204 ,  H04L25/0242 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: A method for performing a precoding based on a generalized phase shift or a precoding based on an extended phase shift in a Multi-Input Multi-Output (MIMO) system employing several sub-carriers, and a transceiver for supporting the same are disclosed. A phase-shift-based precoding matrix is generalized by multiplying a diagonal matrix for a phase shift by a unitary matrix for maintaining orthogonality between sub-carriers. In this case, a diagonal matrix part may be extended by multiplying a precoding matrix for removing an interference between sub-carriers by a diagonal matrix for a phase shift. By generalization and extension of the phase-shift-based precoding, a transceiver is more simplified, and a communication efficiency increases.

公开(公告)号：US20110274205A1

公开(公告)日：2011-11-10

申请号：US13145557

申请日：2010-01-29

Applicant: Moon Il Lee ,  Wook Bong Lee ,  Jae Hoon Chung ,  Hyan Soo Ko ,  Bin Chnl Ihm

Inventor： Moon Il Lee ,  Wook Bong Lee ,  Jae Hoon Chung ,  Hyan Soo Ko ,  Bin Chnl Ihm

IPC: H04L27/00 ,  H04L27/06

CPC classification number: H04B7/0413 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/005 ,  H04W52/325 ,  H04W52/42

Abstract: Provided is a method for transmitting a reference signal (RS) in a downlink multi-input multi-output (MIMO) system which supports a first user equipment (UE) for supporting N transmission antennas from among a total of M transmitting antennas and a second UE for supporting M transmitting antennas (wherein, M>N). The method comprises the steps of: generating a subframe for simultaneously supporting the first UE and the second UE at a base station; transmitting the subframe; and mapping a common reference signal (CRS) for antenna port 0 to antenna port N−1, mapping a CRS for antenna port N to antenna port M−1, and controlling a power level of a CRS for antenna port 0 to antenna port N−1 and a power level of CRS for antenna port N to antenna port M−1, independently from one another, at the subframe.

Abstract translation: 提供了一种用于在下行链路多输入多输出（MIMO）系统中发送参考信号（RS）的方法，所述下行链路多输入多输出（MIMO）系统支持从总共M个发送天线中支持N个发送天线的第一用户设备（UE） UE支持M个发射天线（其中，M> N）。 该方法包括以下步骤：生成用于在基站处同时支持第一UE和第二UE的子帧; 发送子帧; 并将天线端口0的公共参考信号（CRS）映射到天线端口N-1，将天线端口N的CRS映射到天线端口M-1，并将天线端口0的CRS的功率电平控制到天线端口N -1，并且天线端口N到天线端口M-1的CRS的功率电平彼此独立，在子帧处。

公开(公告)号：US20110274200A1

公开(公告)日：2011-11-10

申请号：US12674413

申请日：2008-08-20

Applicant: Moon Il Lee ,  Bin Chul Ihm ,  Hyun Soo Ko ,  Sung Ho Park ,  Wook Bong Lee

Inventor： Moon Il Lee ,  Bin Chul Ihm ,  Hyun Soo Ko ,  Sung Ho Park ,  Wook Bong Lee

IPC: H04L27/28

CPC classification number: H04L25/03343 ,  H04L27/2626 ,  H04L27/2647 ,  H04L2025/03414 ,  H04L2025/03426

Abstract: A method for transmitting/receiving data in a Multiple Input Multiple Output (MIMO) communication system is disclosed. The data transmission method includes determining a precoding matrix to be a part of a phase-shift-based precoding matrix, determining a first diagonal matrix for phase shift to be a part of the phase-shift-based precoding matrix, determining a unitary matrix to be a part of the phase-shift-based precoding matrix, precoding a transmission symbol for each resource using the phase-shift-based precoding matrix to produce precoded data, and transmitting the precoded data, wherein the phase-shift-based precoding matrix is determined by the product of the precoding matrix, a Hermitian matrix of the unitary matrix, the first diagonal matrix, and the unitary matrix.

Abstract translation: 公开了一种在多输入多输出（MIMO）通信系统中发送/接收数据的方法。 数据传输方法包括将预编码矩阵确定为基于相移的预编码矩阵的一部分，将相移的第一对角矩阵确定为基于相移的预编码矩阵的一部分，确定酉矩阵 作为基于相移的预编码矩阵的一部分，使用基于相移的预编码矩阵预编码每个资源的传输符号以产生预编码的数据，并发送预编码的数据，其中基于相移的预编码矩阵是 由预编码矩阵的乘积，酉矩阵的Hermitian矩阵，第一对角矩阵和酉矩阵确定。

公开(公告)号：US20110274071A1

公开(公告)日：2011-11-10

申请号：US13143724

申请日：2010-01-29

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

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

IPC: H04W4/00 ,  H04W72/04

CPC classification number: H04B7/0691 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0689

Abstract: A method and apparatus for receiving and transmitting signals in a wireless communication system are provided. The method of receiving signals includes configuring a system mode and receiving the signals according to the system mode, wherein the system mode is either a first system mode or a second system mode, when the system mode is the first system mode, the signals are transmitted through a maximum of N transmit antennas, and when the system mode is the second system mode, the signals are transmitted through a maximum of M (N

Abstract translation: 提供了一种用于在无线通信系统中接收和发送信号的方法和装置。 接收信号的方法包括根据系统模式配置系统模式和接收信号，其中系统模式是第一系统模式或第二系统模式，当系统模式是第一系统模式时，发送信号 通过最多N个发射天线，并且当系统模式是第二系统模式时，信号通过最大M（N

公开(公告)号：US20110268073A1

公开(公告)日：2011-11-03

申请号：US13143813

申请日：2009-12-02

Applicant: Xu Jian ,  Ja Ho Koo ,  Bin Chul Ihm ,  Moon II Lee ,  Wook Bong Lee ,  Hyun Soo Ko

Inventor： Xu Jian ,  Ja Ho Koo ,  Bin Chul Ihm ,  Moon II Lee ,  Wook Bong Lee ,  Hyun Soo Ko

IPC: H04W72/04

CPC classification number: H04L5/0053 ,  H04L5/0057 ,  H04L27/345

Abstract: A method of transmitting and receiving channel state information feedback in a wireless communication system is disclosed. A method of transmitting channel state information (CSI) feedback by a user equipment receiver in a wireless communication system comprises mapping components of a CSI matrix to constellations; and allocating the mapped components to resource.

Abstract translation: 公开了一种在无线通信系统中发送和接收信道状态信息反馈的方法。 在无线通信系统中由用户设备接收机发送信道状态信息（CSI）反馈的方法包括将CSI矩阵的分量映射到星座; 并将映射的组件分配给资源。

公开(公告)号：US20110268072A1

公开(公告)日：2011-11-03

申请号：US13143725

申请日：2010-01-29

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

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

IPC: H04W72/04

CPC classification number: H04B7/0452 ,  H04B7/068

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20110222521A1

公开(公告)日：2011-09-15

申请号：US13045711

申请日：2011-03-11

Applicant: Wook Bong Lee ,  Bin Chul Ihm ,  Jin Young Chun

Inventor： Wook Bong Lee ,  Bin Chul Ihm ,  Jin Young Chun

IPC: H04W40/00

CPC classification number: H04B7/0619 ,  H04B7/063 ,  H04B7/0643 ,  H04L5/0014

Abstract: A method and User Equipment (UE) for transmitting feedback information are disclosed. The UE feeds back M best subbands to a Base Station (BS). Especially, the UE feeds back indication information indicating a combination of the M best subbands from among combinations each having M subbands produced out of a maximum number of subbands that can be allocated. Hence, coding of the feedback information is simplified.

Abstract translation: 公开了一种用于发送反馈信息的方法和用户设备（UE）。 UE将M个最佳子带反馈到基站（BS）。 特别地，UE从可以分配的最大数量的子带中产生的具有M个子带的组合中反馈指示M个最佳子带的组合的指示信息。 因此，反馈信息的编码被简化。

公开(公告)号：US20110216840A1

公开(公告)日：2011-09-08

申请号：US13127441

申请日：2009-11-04

Applicant: Moon Il Lee ,  Wook Bong Lee ,  Bin Chul Ihm ,  Jin Young Chun

Inventor： Moon Il Lee ,  Wook Bong Lee ,  Bin Chul Ihm ,  Jin Young Chun

IPC: H04L27/00

CPC classification number: H04B7/0434 ,  H04B7/0478 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/063

Abstract: Disclosed is a signal transmission method comprising a feedback information receiving step of receiving a transmission rate and channel state information for transmission from a receiving end, a step of generating a signal to be transmitted by using a multi-antenna in accordance with the transmission rate, a step of performing a precoding on the generated signal by using the precoding matrix of the nested structure selected from a predetermined codebook in accordance with the transmission rate, and a step of transmitting the precoded signal. Said codebook includes a precoding matrix set in which a pre-coding matrix according to a first number of streams is not included in a precoding matrix according to a second number of streams greater than the first number of streams.

Abstract translation: 公开了一种信号传输方法，包括：反馈信息接收步骤，从接收端接收传输速率和信道状态信息以进行传输;根据传输速率产生使用多天线发射的信号的步骤; 通过使用根据传输速率从预定码本中选择的嵌套结构的预编码矩阵，对生成的信号执行预编码的步骤，以及发送预编码信号的步骤。 所述码本包括预编码矩阵集合，其中根据第一数量的流的预编码矩阵不包括在预编码矩阵中，根据大于第一数量的流的第二数量的流。

公开(公告)号：US20110206024A1

公开(公告)日：2011-08-25

申请号：US13028174

申请日：2011-02-15

Applicant: Wook Bong LEE ,  Bin Chul Ihm ,  Jin Young Chun

Inventor： Wook Bong LEE ,  Bin Chul Ihm ,  Jin Young Chun

IPC: H04W84/02

CPC classification number: H04L1/003 ,  H04B7/0619 ,  H04B7/0639 ,  H04B7/0643 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/0029 ,  H04L1/0606 ,  H04L1/0618 ,  H04L1/1614

Abstract: A method for transmitting a feedback request in a wireless communication system is provided. The method includes: transmitting feedback request control information to a user equipment (UE), wherein the feedback request control information includes a MIMO (Multi-Input Multi-Output) feedback bitmap indicating at least one MIMO feedback mode to be applied to the UE and a common parameter, and the common parameter comprises a parameter commonly requested for the UE to generate feedback information in the at least one MIMO feedback mode.

Abstract translation: 提供了一种用于在无线通信系统中发送反馈请求的方法。 该方法包括：向用户设备（UE）发送反馈请求控制信息，其中反馈请求控制信息包括指示要应用于UE的至少一个MIMO反馈模式的MIMO（多输入多输出）反馈位图，以及 公共参数，并且公共参数包括通常要求的用于在所述至少一个MIMO反馈模式中生成反馈信息的参数的参数。