公开(公告)号：US20150365149A1

公开(公告)日：2015-12-17

申请号：US14836433

申请日：2015-08-26

Applicant: LG ELECTRONICS INC.

Inventor： Yu Jin NOH ,  Dong Wook ROH ,  Byeong Woo KANG ,  Bong Hoe KIM ,  Dae Won LEE

IPC: H04B7/04

CPC classification number: H04B7/0473 ,  H04B7/0404 ,  H04B7/0456 ,  H04B7/0465 ,  H04B7/0486 ,  H04B7/0639 ,  H04L25/03343 ,  H04L25/03923 ,  H04L25/03929 ,  H04L27/2601 ,  H04L27/2615 ,  H04L27/2636 ,  H04L2025/03426 ,  H04W72/06

Abstract: A method for transmitting and receiving uplink signals using an optimized rank 3 codebook is disclosed. The optimized rank 3 codebook includes 6 precoding matrix groups, each of which has 1 variable having an amplitude of 1. Preferably, the optimized 4Tx rank 3 codebook has 12 preceding matrix, two precoding matrixes are selected from each the above 6 precoding matrix groups considering chordal distance and the number of precoding matrix.

Abstract translation: 公开了一种使用优化的3级码本发送和接收上行链路信号的方法。 优化的等级3码本包括6个预编码矩阵组，每个预编码矩阵组的1个变量的振幅为1.优选的是，优化的4Tx等级3码本具有12个先前的矩阵，考虑到上述6个预编码矩阵组中的每一个选择两个预编码矩阵 弦距离和预编码矩阵的数量。

公开(公告)号：US20150236831A1

公开(公告)日：2015-08-20

申请号：US14694346

申请日：2015-04-23

Applicant: LG ELECTRONICS INC.

Inventor： Byeong Woo KANG ,  Dong Wook ROH ,  Yong Ho SEOK ,  Yu Jin NOH ,  Bong Hoe KIM ,  Dae Won LEE

IPC: H04L5/00 ,  H04L27/26

CPC classification number: H04L5/0048 ,  H04L27/2628 ,  H04W84/12 ,  H04W99/00

Abstract: A method of transmitting a training signal in a Wireless Local Area Network (WLAN) system includes generating one or more first training signals for a first destination station and one or more second training signals for a second destination station by applying a mapping matrix P to a training signal generation sequence, mapping the first training signals and the second training signals to a plurality of antennas according to an antenna mapping matrix, and performing Inverse Fast Fourier Transform (IFFT) on each of the first training signals and the second training signals mapped to the plurality of antennas and transmitting the training signals through the plurality of antennas.

Abstract translation: 在无线局域网（WLAN）系统中发送训练信号的方法包括：通过将映射矩阵P应用于第一目的地站，生成用于第一目的地站的一个或多个第一训练信号和用于第二目的地站的一个或多个第二训练信号 训练信号生成序列，根据天线映射矩阵将第一训练信号和第二训练信号映射到多个天线，并对第一训练信号和第二训练信号中的每一个进行反傅里叶逆变换（IFFT），映射到 多个天线，并通过多个天线发送训练信号。

公开(公告)号：US20150124680A1

公开(公告)日：2015-05-07

申请号：US14595876

申请日：2015-01-13

Applicant: LG ELECTRONICS INC.

Inventor： Byeong Woo KANG ,  Dae Won LEE ,  Yong Ho SEOK

IPC: H04W52/02

CPC classification number: H04W52/0235 ,  H04B7/0452 ,  H04L69/323 ,  H04W52/02 ,  H04W52/0212 ,  H04W52/0219 ,  H04W52/0222 ,  H04W74/0808 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/444

Abstract: A method for power saving in a wireless local area network. The method according to one embodiment includes acquiring, by a wireless device, a transmission opportunity (TXOP); and receiving a signal field from the transmitting device. A group identifier indicates recipients, a number indicator indicates spatial streams, and a power saving indicator indicates that the transmitting device is allowed to enter a doze state during the TXOP. The method according to the embodiment further includes determining, by the wireless device, whether a first condition or a second condition is satisfied. The first condition is satisfied if the power saving indicator indicates an allowance, the wireless device is a recipient indicated by the group identifier, and the number of spatial streams is equal to zero. The second condition is satisfied if the power saving indicator indicates an allowance, and the wireless device is not a recipient indicated by the group identifier.

Abstract translation: 一种在无线局域网中节电的方法。 根据一个实施例的方法包括通过无线设备获取传输机会（TXOP）; 以及从发送装置接收信号场。 组标识符表示接收者，数字指示符表示空间流，省电指示符表示在TXOP期间允许发送设备进入打盹状态。 根据实施例的方法还包括由无线设备确定是否满足第一条件或第二条件。 如果省电指示符指示允许，则无线设备是由组标识符指示的接收者，并且空闲流的数量等于零，则满足第一条件。 如果省电指示符指示允许，并且无线设备不是由组标识符指示的接收者，则满足第二条件。

公开(公告)号：US20150071048A1

公开(公告)日：2015-03-12

申请号：US14539920

申请日：2014-11-12

Applicant: LG ELECTRONICS INC.

Inventor： Bong Hoe KIM ,  Dae Won LEE ,  Yu Jin NOH ,  Byeong Woo KANG ,  Dong Youn SEO ,  Dong Wook ROH

IPC: H04W72/04 ,  H04B7/04

CPC classification number: H04B7/0456 ,  H04B7/0413 ,  H04L1/0071 ,  H04L5/0044 ,  H04L27/2626 ,  H04W72/04

Abstract: A method and terminal apparatus are described for performing channel interleaving at a terminal in a multiple-input multiple-output (MIMO) wireless communication system. A number of columns C of an interleaver matrix are assigned as a number of symbols for transmitting data per subframe (Nsymb). A number of rows R of the interleaver matrix is defined as H · L · log 2   Q C , where H is a number of modulation symbols per layer, L is a number of layers and Q is a modulation order. Input vector sequences are written into entries of the interleaver matrix, row by row. Each of the entries has a size of L·log2Q bits. Output bit sequences are generated by reading out the entries of the interleaver matrix, column by column. The output bit sequences are modulated by a unit of log2Q bits, to generate modulation symbols. The modulation symbols are mapped to the L layers, and transmitted by using the L layers.

Abstract translation: 描述了一种用于在多输入多输出（MIMO）无线通信系统中的终端处执行信道交织的方法和终端装置。 分配多个交织器矩阵的列C作为每子帧发送数据的符号数（Nsymb）。 交织器矩阵的行数R被定义为H·L·log 2，这里H是每层调制符号的数量，L是层数，Q是调制阶数。 输入向量序列逐行写入交织器矩阵的条目。 每个条目的大小为L·log2Q位。 通过逐列读出交织器矩阵的条目来生成输出位序列。 输出位序列由log2Q位单位调制，以产生调制符号。 调制符号映射到L层，并通过使用L层传输。

公开(公告)号：US20140341313A1

公开(公告)日：2014-11-20

申请号：US14445805

申请日：2014-07-29

Applicant: LG Electronics Inc.

Inventor： Bong Hoe KIM ,  Byeong Woo KANG ,  Yu Jin NOH ,  Hak Seong KIM ,  Dae Won LEE

IPC: H04B7/04

CPC classification number: H04L5/0048 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0613 ,  H04B7/0684

Abstract: A method for transmitting a sounding reference signal in a MIMO wireless communication system and an apparatus therefor are disclosed. The method for transmitting sounding reference signals (SRSs) in a MIMO wireless communication system comprises receiving sounding reference signal parameters from a base station; receiving information of the number of sounding reference signals which will be transmitted at a transmission time instant from the base station; if a plurality of sounding reference signals are provided, generating the sounding reference signals corresponding to each of the plurality of antennas by using the sounding reference signal parameters; and transmitting the generated sounding reference signals to the base station through their corresponding antennas at a specific transmission instant.

Abstract translation: 公开了一种用于在MIMO无线通信系统及其装置中发送探测参考信号的方法。 用于在MIMO无线通信系统中发送探测参考信号（SRS）的方法包括从基站接收探测参考信号参数; 接收将从基站在传输时刻发送的探测参考信号的数量的信息; 如果提供多个​​探测参考信号，则通过使用探测参考信号参数产生与多个天线中的每一个对应的探测参考信号; 并且在特定的传输瞬间通过其对应的天线将生成的探测参考信号发送到基站。

公开(公告)号：US20140140312A1

公开(公告)日：2014-05-22

申请号：US14166621

申请日：2014-01-28

Applicant: LG Electronics Inc.

Inventor： Dae Won LEE ,  Dong Wook ROH ,  Byeong Woo KANG ,  Yong Ho SEOK ,  Yu Jin NOH ,  Bong Hoe KIM

IPC: H04L5/00 ,  H04W84/12 ,  H04B7/04

CPC classification number: H04B7/0452 ,  H04B7/0413 ,  H04B7/0456 ,  H04B7/0473 ,  H04B7/0486 ,  H04B7/0617 ,  H04L5/0023 ,  H04L5/0091 ,  H04L5/0094 ,  H04L27/2613 ,  H04W72/0406 ,  H04W72/046 ,  H04W84/12

Abstract: There is provided a method of transmitting control information in a Wireless Local Area Network (WLAN) system, comprising transmitting first control information by means of cyclic shift delay diversity beam-forming and transmitting second control information. The first control information comprises information necessary for each of a plurality of target stations of the second control information to receive the second control information. The second control information beamformed and transmitted to the plurality of target stations.

公开(公告)号：US20140105091A1

公开(公告)日：2014-04-17

申请号：US14104969

申请日：2013-12-12

Applicant: LG ELECTRONICS INC.

Inventor： Byeong Woo KANG ,  Dae Won LEE ,  Yong Ho SEOK

IPC: H04W52/02 ,  H04B7/04

CPC classification number: H04W52/0235 ,  H04B7/0452 ,  H04L69/323 ,  H04W52/02 ,  H04W52/0212 ,  H04W52/0219 ,  H04W52/0222 ,  H04W74/0808 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/444

Abstract: A method of power saving in a wireless local area network is provided. The method is performed by a wireless device that acquires TXOP (transmission opportunity) from an access point (AP), and the TXOP indicates an interval of time when the AP has the right to transmit at least one data block for multi user-multiple input multiple output (MU-MIMO) transmission. The method includes receiving a power saving indicator from the AP, the power saving indicator indicating whether the AP is allowed to enter doze state during the TXOP; and entering the wireless device into the doze state until the end of the TXOP if the power saving indicator indicates an allowance of entering the doze state.

Abstract translation: 提供了一种在无线局域网中省电的方法。 该方法由从接入点（AP）获取TXOP（传输机会）的无线设备执行，并且TXOP指示当AP有权发送用于多用户多输入的至少一个数据块的时间间隔 多输出（MU-MIMO）传输。 该方法包括从AP接收功率节省指示符，所述省电指示器指示在TXOP期间AP是否被允许进入打盹状态; 并且如果省电指示器指示进入打盹状态的允许，则将无线设备进入瞌睡状态直到TXOP结束。

公开(公告)号：US20140016717A1

公开(公告)日：2014-01-16

申请号：US14028352

申请日：2013-09-16

Applicant: LG ELECTRONICS INC.

Inventor： Bong Hoe KIM ,  Byeong Woo KANG ,  Dae Won LEE ,  Yu Jin NOH ,  Ki Jun KIM ,  Dong Wook ROH

IPC: H04B7/04

CPC classification number: H04L5/0051 ,  H04B7/0413 ,  H04B7/0684 ,  H04J13/0003 ,  H04J13/0025 ,  H04J13/10 ,  H04L1/0675 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0035 ,  H04L5/0037 ,  H04L5/0092 ,  H04L27/2613 ,  H04W8/26 ,  H04W72/042

Abstract: The present application discloses a method in which a base station transmits a reference signal sequence in a wireless communication system. In detail, the method comprises the steps of: generating a pseudo-random sequence using a first m-sequence and a second m-sequence; generating the reference signal sequence using the pseudo-random sequence; and transmitting the reference signal to a mobile station via antenna ports different from one another. The second m-sequence has an initial value containing parameters for discriminating reference signal sequences among users.

Abstract translation: 本申请公开了一种基站在无线通信系统中发送参考信号序列的方法。 具体而言，该方法包括以下步骤：使用第一m序列和第二m序列生成伪随机序列; 使用伪随机序列生成参考信号序列; 以及经由彼此不同的天线端口将参考信号发送到移动台。 第二m序列具有初始值，其包含用于在用户之间鉴别参考信号序列的参数。