公开(公告)号：US20160013847A1

公开(公告)日：2016-01-14

申请号：US14865654

申请日：2015-09-25

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin KIM ,  Sunam KIM ,  Binchul IHM ,  Hyukmin SON ,  Jaehoon CHUNG

IPC: H04B7/04

CPC classification number: H04B7/0456 ,  H04B7/0408 ,  H04B7/0417 ,  H04B7/061 ,  H04B7/0617 ,  H04B7/0639 ,  H04B7/0695 ,  H04W16/28

Abstract: A method for performing hierarchical beamforming in a wireless access system and a device therefor are disclosed. Particularly, the method comprises: an initial step for allowing a base station to transmit a plurality of first beams, to which different steering vectors are applied, to a terminal through corresponding reference signals, and a repetition step for allowing the base station to transmit a plurality of second beams, to which different steering vectors are applied, to the terminal through corresponding reference signals by considering feedback information that contains an index of one or more beams received from the terminal, wherein the repetition step can be repeated up to a predetermined number of times.

公开(公告)号：US20130242896A1

公开(公告)日：2013-09-19

申请号：US13772129

申请日：2013-02-20

Applicant: LG ELECTRONICS INC.

Inventor： Hyukmin SON ,  Yongsam KIM ,  June JANG

IPC: H04W72/08

CPC classification number: H04W72/085 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0632 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/06 ,  H04L5/0016 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/03891

Abstract: A method and apparatus for receiving a signal in a wireless communication system, which supports MU-MIMO scheme, is disclosed to maximize a signal-to-interference and noise ratio (SINR) for a received signal. The method for receiving a signal through a user equipment in a wireless communication system, which supports multi-user-MIMO (MU-MIMO) scheme, comprises the steps of calculating a channel matrix on the basis of a reference signal included in a signal received from a base station; calculating a first vector having maximum channel gain in a vector space formed by the channel matrix; determining a second vector, which minimizes a quantization error with the channel matrix, by using a precoding codebook; calculating a third vector located between the first vector and the second vector, indicating an effective channel having a maximum signal-to-interference plus noise ratio (SINR) for the received signal; and processing the received signal by using a received weight vector determined on the basis of the third vector.

Abstract translation: 公开了一种用于在支持MU-MIMO方案的无线通信系统中接收信号的方法和装置，以使接收信号的信噪比和噪声比（SINR）最大化。 在支持多用户MIMO（MU-MIMO）方案的无线通信系统中通过用户设备接收信号的方法包括以下步骤：基于接收到的信号中包括的参考信号来计算信道矩阵 从基站; 计算由所述信道矩阵形成的向量空间中具有最大信道增益的第一向量; 通过使用预编码码本来确定最小化与信道矩阵的量化误差的第二矢量; 计算位于第一矢量和第二矢量之间的第三矢量，指示对于接收信号具有最大信号与干扰加噪声比（SINR）的有效信道; 以及通过使用基于第三矢量确定的接收加权矢量来处理接收信号。