公开(公告)号：US20120134338A1

公开(公告)日：2012-05-31

申请号：US13388425

申请日：2010-08-26

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

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

IPC: H04W4/00 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04L5/0023 ,  H04L5/0091 ,  H04L25/0204 ,  H04L25/0226

Abstract: The present invention relates to a wireless communication system, and discloses a method and apparatus for transmitting/receiving a signal in a wireless communication system that supports multi-user MIMO transmission. According to one embodiment of the present invention, a method in which a mobile station receives a signal in a wireless communication system that supports multi-user MIMO transmission, comprises: a step of receiving information on the entirety of the transmission rank of the multi-user MIMO transmission; a step of receiving a reference signal and data for demodulation for the mobile station on the basis of the information on the entirety of the transmission rank; a step of acquiring channel information on the mobile station from the reference signal for demodulation; and a step of demodulating said data on the basis of the acquired channel information.

Abstract translation: 本发明涉及无线通信系统，并且公开了一种在支持多用户MIMO传输的无线通信系统中发送/接收信号的方法和装置。 根据本发明的一个实施例，一种移动台在支持多用户MIMO传输的无线通信系统中接收信号的方法包括：接收关于多用户MIMO传输的整体传输秩的信息的步骤， 用户MIMO传输; 基于关于整个发送等级的信息，接收用于移动台的参考信号和解调数据的步骤; 从所述参考信号获取所述移动台的信道信息以进行解调的步骤; 以及基于所获取的频道信息来解调所述数据的步骤。

公开(公告)号：US20120128088A1

公开(公告)日：2012-05-24

申请号：US13322139

申请日：2010-05-24

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

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

IPC: H04L27/28

CPC classification number: H04B7/0465 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0639 ,  H04B7/0691 ,  H04W52/42

Abstract: The present invention relates to a wireless communication system, and an adaptive multiple antenna transmission method and apparatus in accordance with antenna transmission power are disclosed. A method of performing multiple antenna transmission from a terminal to a base station according to one embodiment of the present invention may include the steps of: determining a reference value for a transmission power of each of a plurality of transmit antennas of the terminal; grouping the plurality of transmit antennas into a first group of transmit antennas and a second group of transmit antennas in accordance with the determined reference value; and transmitting a signal to the base station through at least one of the first group of the transmit antennas and the second group of transmit antennas.

Abstract translation: 本发明涉及一种无线通信系统，以及根据天线发射功率的自适应多天线传输方法和装置。 根据本发明的一个实施例，从终端到基站执行多天线传输的方法可以包括以下步骤：确定终端的多个发射天线中的每一个的发射功率的参考值; 根据确定的参考值将多个发射天线分组成第一组发射天线和第二组发射天线; 以及通过所述第一组发射天线和所述第二组发射天线中的至少一个发射信号到所述基站。

公开(公告)号：US08179819B2

公开(公告)日：2012-05-15

申请号：US12318437

申请日：2008-12-29

Applicant: Jae Wan Kim ,  Wook Bong Lee ,  Su Nam Kim ,  Dong Guk Lim ,  Bin Chul Ihm

Inventor： Jae Wan Kim ,  Wook Bong Lee ,  Su Nam Kim ,  Dong Guk Lim ,  Bin Chul Ihm

IPC: H04W72/00 ,  H04W72/04 ,  H04W28/12 ,  H04W24/02

CPC classification number: H04W72/02 ,  H04B7/024 ,  H04B7/026 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0495 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04B17/345 ,  H04L1/0026 ,  H04L25/03904 ,  H04W24/02

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20120113861A1

公开(公告)日：2012-05-10

申请号：US13384204

申请日：2010-07-30

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

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

IPC: H04W24/00 ,  H04L12/26

CPC classification number: H04L25/03343 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0031 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0048 ,  H04L2025/03414 ,  H04L2025/03426

Abstract: A method and an apparatus for feedback transmission in a wireless communication system are provided. A terminal receives information about a short-term feedback period and a long-term feedback period from a base station, and then transmits to the base station short-term feedback information per short-term feedback period or long-term feedback information per long-term feedback period over a primary fast feedback channel (PFBSCH). The long-term feedback information contains an index of a subband subjected to channel measurement and a difference in measurement values that is a difference between a reference channel measurement value and a channel measurement value being measured.

Abstract translation: 提供了一种用于无线通信系统中的反馈传输的方法和装置。 终端从基站接收关于短期反馈时段和长期反馈时段的信息，然后根据短期反馈时段或长期反馈信息向基站发送短期反馈信息， 主要快速反馈信道（PFBSCH）的短期反馈周期。 长期反馈信息包含经过信道测量的子带的索引和作为被测量的信道测量值之间的差的测量值的差异。

公开(公告)号：US20120113795A1

公开(公告)日：2012-05-10

申请号：US13384219

申请日：2010-07-19

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

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

IPC: H04W92/00 ,  H04B7/216 ,  H04J11/00

CPC classification number: H04J13/004 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/0051 ,  H04L27/2613

Abstract: The present invention relates to transmitting a downlink reference signal in a wireless communication system. A method for a base station to transmit a downlink signal by using two or more layers includes multiplexing and transmitting a reference signal for the two or more layers on the basis of a reference signal pattern on a data region of a downlink subframe and transmitting data for the two or more layers on the data region of the downlink subframe, wherein the reference signal for the two or more layers is a dedicated reference signal that is used to demodulate the data for the two or more layers on a receiving end, and in the multiplexing of the reference signal, the reference signal for the two or more layers is code-division-multiplexed by an orthogonal code having a length of at least 2.

Abstract translation: 本发明涉及在无线通信系统中发送下行链路参考信号。 基站通过使用两层以上层来发送下行链路信号的方法包括基于下行链路子帧的数据区域上的参考信号模式复用并发送两层或更多层的参考信号，并发送用于 在下行链路子帧的数据区上的两层或更多层，其中两层或更多层的参考信号是专用参考信号，用于解调接收端两层或更多层的数据，而在 参考信号的多路复用，两个或多个层的参考信号由具有至少2的长度的正交码进行码分复用。

公开(公告)号：US08175184B2

公开(公告)日：2012-05-08

申请号：US12680059

申请日：2008-11-04

Applicant: Jae Wan Kim ,  Bin Chul Ihm ,  Jin Young Chun ,  Jin Hyuk Jung ,  Su Nam Kim

Inventor： Jae Wan Kim ,  Bin Chul Ihm ,  Jin Young Chun ,  Jin Hyuk Jung ,  Su Nam Kim

IPC: H04B7/02

CPC classification number: H04B7/0639 ,  H04B7/0617

Abstract: A method for transmitting feedback information in a codebook-based multiple-input multiple-output (MIMO) system is disclosed. For example, a method for transmitting beamforming information in a MIMO system using a codebook-based beamforming scheme includes receiving a signal and estimating a reception channel, and transmitting beamforming information selected through the estimated channel information from a codebook which is updated using phase shift matrices having a phase value as a parameter and using previous beamforming information.

Abstract translation: 公开了一种在基于码本的多输入多输出（MIMO）系统中发送反馈信息的方法。 例如，使用基于码本的波束成形方案在MIMO系统中发送波束形成信息的方法包括：接收信号并估计接收信道，以及从使用相移矩阵更新的码本通过估计信道信息选择的波束成形信息 具有相位值作为参数并使用先前的波束形成信息。

公开(公告)号：US08175182B2

公开(公告)日：2012-05-08

申请号：US12312255

申请日：2007-11-02

Applicant: Moon Il Lee ,  Bin Chul Ihm ,  Wook Bong Lee ,  Hyun Soo Ko ,  Jae Won Chang

Inventor： Moon Il Lee ,  Bin Chul Ihm ,  Wook Bong Lee ,  Hyun Soo Ko ,  Jae Won Chang

IPC: H04L1/02

CPC classification number: H04B7/0682 ,  H04B7/0417 ,  H04B7/0465 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0671 ,  H04L27/2626

Abstract: A method of transmitting data using cyclic delay in a multi-antenna system using a plurality of subcarriers and a transceiver supporting the same are disclosed. More particularly, a method of selecting a matrix (second matrix) for transforming a precoding matrix (first matrix) into a unitary matrix from a codebook by a prescribed reference is disclosed. An index for selecting the second matrix is calculated by a prescribed modulo operation in an open loop system or delivered as feedback information in a closed loop system. Diversity can be obtained by switching each column of the selected second matrix in accordance with time. In a multi-user system, a single second matrix can be determined by combining columns of the second matrix selected by each user.

Abstract translation: 公开了一种使用多个子载波在多天线系统中使用循环延迟发送数据的方法以及支持其的收发机。 更具体地，公开了一种选择用于将预编码矩阵（第一矩阵）从码本转换为规定参考的酉矩阵的矩阵（第二矩阵）的方法。 用于选择第二矩阵的索引通过在开环系统中的规定的模运算来计算，或者作为闭环系统中的反馈信息递送。 通过根据时间切换所选择的第二矩阵的每列，可以获得分集。 在多用户系统中，可以通过组合由每个用户选择的第二矩阵的列来确定单个第二矩阵。

公开(公告)号：US20120106534A1

公开(公告)日：2012-05-03

申请号：US13347458

申请日：2012-01-10

Applicant: Jin Soo CHOI ,  Han Gyu CHO ,  Bin Chul IHM ,  Wook Bong LEE

Inventor： Jin Soo CHOI ,  Han Gyu CHO ,  Bin Chul IHM ,  Wook Bong LEE

IPC: H04B7/208 ,  H04W92/00

CPC classification number: H04L5/0023 ,  H04L5/0048 ,  H04L5/005

Abstract: A method for allocating pilot subcarriers in a resource block for a wideband wireless mobile communication system using an orthogonal frequency division multiplexing (OFDMA) modulation is discussed. In this method, pilot subcarriers are allocated in the resource block so that a group of consecutive data subcarriers separated from adjacent other group of consecutive data subcarriers by the pilot subcarriers has even number of subcarriers within an OFDMA symbol.

Abstract translation: 讨论了使用正交频分复用（OFDMA）调制在宽带无线移动通信系统的资源块中分配导频子载波的方法。 在该方法中，在资源块中分配导频子载波，使得由导频子载波与相邻的其他连续数据子载波组分离的连续数据副载波组在OFDMA符号内具有偶数子载波。

公开(公告)号：US08160101B2

公开(公告)日：2012-04-17

申请号：US12682875

申请日：2008-10-01

Applicant: Jin Sam Kwak ,  Ki Seon Ryu ,  Bin Chul Ihm ,  Yeong Hyeon Kwon

Inventor： Jin Sam Kwak ,  Ki Seon Ryu ,  Bin Chul Ihm ,  Yeong Hyeon Kwon

IPC: H04J3/16

CPC classification number: H04B7/2615 ,  H04W72/0446 ,  H04W72/1289

Abstract: A method for transmitting and receiving data by a mobile station (MS), a method for transmitting and receiving data by a base station (BS), and a mobile communication terminal are provided. The method for transmitting and receiving data by an MS includes generating an uplink subframe by placing an uplink control channel so as to have a margin with a time allocated to a MAP of a downlink subframe and transmitting the uplink subframe to a BS. A new frame structure compatible with a full duplex FDD MS is applied in a mobile communication system.

Abstract translation: 提供了一种由移动台（MS）发送和接收数据的方法，由基站（BS）发送和接收数据的方法以及移动通信终端。 由MS发送和接收数据的方法包括：通过放置上行链路控制信道来产生上行链路子帧，以便具有分配给下行链路子帧的MAP的时间的余量并向BS发送上行链路子帧。 与全双工FDD MS兼容的新帧结构应用于移动通信系统中。

公开(公告)号：US20120082250A1

公开(公告)日：2012-04-05

申请号：US13320897

申请日：2010-06-15

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

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

IPC: H04W52/04 ,  H04L27/00 ,  H04B7/24

CPC classification number: H04W52/42 ,  H04B7/0615

Abstract: An uplink power control method and apparatus in a wireless communication system are provided. The uplink power control method in a terminal of a wireless communication system includes mapping one or more codewords to one or more layers, and multiplying the codewords mapped to the layers by a layer power control matrix so as to perform layer power control.

Abstract translation: 提供了一种无线通信系统中的上行链路功率控制方法和装置。 无线通信系统的终端中的上行链路功率控制方法包括将一个或多个码字映射到一个或多个层，并且通过层功率控制矩阵乘以映射到层的码字，以执行层功率控制。