公开(公告)号：US20150015666A1

公开(公告)日：2015-01-15

申请号：US14078737

申请日：2013-11-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sun Hyoung KWON ,  Ho Kyom KIM ,  Seok Ho WON ,  Jong Soo LIM ,  O Hyung KWON

IPC: H04N13/00

CPC classification number: H04N13/122 ,  H04N13/106 ,  H04N13/139 ,  H04N13/194 ,  H04N21/816

Abstract: In order to provide a three-dimensional (3D) video streaming service to a user terminal, user characteristic information including eyesight information of the left eye and the right eye of a user is received from the user terminal. Then, one of quality of a left image and that of a right image is improved in accordance with the eyesight information so that an image with improved quality is transmitted to the user terminal.

Abstract translation: 为了向用户终端提供三维（3D）视频流服务，从用户终端接收包括用户的左眼和右眼的视力信息的用户特征信息。 然后，根据视力信息改善左图像和右图像的质量之一，使得具有改善的质量的图像被发送到用户终端。

公开(公告)号：US20160105870A1

公开(公告)日：2016-04-14

申请号：US14881782

申请日：2015-10-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seok Ho WON ,  Suchang CHAE ,  Seyoung CHO ,  Il Gyu KIM ,  Seung Chan BANG

IPC: H04W72/04 ,  H04B7/06 ,  H04B7/04

CPC classification number: H04B7/0617 ,  H04B7/0413 ,  H04B7/0689

Abstract: Provided is a method for generating, by a base station, a common signal commonly required for surrounding terminals of the base station in a massive multiple input multiple output (MIMO) system. The base station generates data commonly required for the surrounding terminals. The base station generates a plurality of beamforming vectors using a time-domain constant amplitude (TCA)-frequency-domain constant amplitude (FCA) sequence having a constant size in a time domain and a frequency domain. Further, the base station generates a plurality of antenna streams corresponding to the common signal by multiplying the plurality of beamforming vectors by the data.

Abstract translation: 提供了一种用于在大量多输入多输出（MIMO）系统中由基站生成基站的周围终端通用所需的公共信号的方法。 基站生成周围终端通常需要的数据。 基站使用在时域和频域中具有恒定大小的时域恒定幅度（TCA） - 频域 - 恒定幅度（FCA）序列来生成多个波束形成向量。 此外，基站通过将多个波束成形向量乘以数据，生成与公共信号对应的多个天线流。

公开(公告)号：US20160149619A1

公开(公告)日：2016-05-26

申请号：US14937960

申请日：2015-11-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seok Ho WON ,  Seyoung CHO ,  Suchang CHAE ,  Il Gyu KIM ,  Seung Chan BANG

IPC: H04B7/04 ,  H04L5/00

CPC classification number: H04B7/046 ,  H04B7/0417 ,  H04B7/0669

Abstract: A transmitter generates a first precoding vector for a first virtual antenna port among a plurality of virtual antenna ports using a first sequence having a constant magnitude and a discrete Fourier transform (DFT) vector sequence in a time domain and a frequency domain. The transmitter generates a plurality of second precoding vectors for the remaining virtual antenna port, except for the first virtual antenna port of the plurality of virtual antenna ports by circular shifting the first precoding vector. The transmitter maps a plurality of first data streams for the plurality of virtual antenna ports to a plurality of physical antenna ports using the first precoding vector and the plurality of second precoding vectors.

Abstract translation: 发射机使用具有恒定幅度的第一序列和在时域和频域中的离散傅里叶变换（DFT）矢量序列来生成多个虚拟天线端口中的第一虚拟天线端口的第一预编码矢量。 发射机通过循环移位第一预编码矢量，除了多个虚拟天线端口中的第一虚拟天线端口之外，为剩余的虚拟天线端口生成多个第二预编码向量。 发射机使用第一预编码向量和多个第二预编码向量将多个虚拟天线端口的多个第一数据流映射到多个物理天线端口。