公开(公告)号：US12272879B2

公开(公告)日：2025-04-08

申请号：US18086276

申请日：2022-12-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Young Seog Song ,  Eun Young Choi ,  Song Noh ,  Kyung Sik Seo

IPC: H01Q3/16 ,  H04B7/06

Abstract: A method of estimating a channel of a base station in a communication system using an IRS may comprise: receiving a first signal through a direct path between a terminal and the base station from the terminal and a second signal through an indirect path through the IRS from the terminal; estimating a first angle of arrival of the second signal received from the IRS; estimating a second angle of arrival of a signal transmitted to the IRS by the terminal based on the estimated first angle of arrival; estimating a third angle of arrival of the first signal received from the terminal based on the estimated first angle of arrival; and estimating path gains on the direct path and the indirect path based on the estimated first angle of arrival to the estimated third angle of arrival.

公开(公告)号：US09570815B2

公开(公告)日：2017-02-14

申请号：US14104377

申请日：2013-12-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Eun Hong ,  Moon Sik Lee ,  Young Seog Song ,  Jun Hwan Lee ,  Eun Young Choi ,  II Gyu Kim ,  Seung Chan Bang

IPC: H04W36/00 ,  H01Q21/06 ,  H01Q1/24 ,  H01Q21/22 ,  H04W16/28 ,  H04B7/06

CPC classification number: H01Q21/061 ,  H01Q1/246 ,  H01Q21/065 ,  H01Q21/205 ,  H01Q21/22 ,  H01Q21/26 ,  H04B7/0617 ,  H04W16/28 ,  H04W36/0072

Abstract: There are provided an antenna apparatus and a method of handover using the antenna apparatus. The antenna apparatus may comprise a plurality of antenna elements forming a plurality of beams in a predetermined service area. The plurality of antenna elements are arranged in a plurality of rows, and a number of antenna elements included in an uppermost row of the plurality of rows is smaller than a number of antenna elements included in a downmost row of the plurality of rows, and differences between center angles of beams formed by the antenna elements included in the downmost row are larger than differences between center angles of beams formed by the antenna elements included in the uppermost row.

Abstract translation: 提供了使用天线装置的天线装置和切换方法。 天线装置可以包括在预定的服务区域中形成多个波束的多个天线元件。 多个天线元件被布置成多行，并且包括在多行的最上行中的多个天线元件小于多行中的最下行中包括的天线元件的数量，并且差异 包括在最下排中的天线元件形成的光束的中心角之间的差大于由最上面的行中包括的天线元件形成的光束的中心角之间的差。

公开(公告)号：US10096907B2

公开(公告)日：2018-10-09

申请号：US15292897

申请日：2016-10-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Eun Hong ,  Moon Sik Lee ,  Young Seog Song ,  Jun Hwan Lee ,  Eun Young Choi ,  Il Gyu Kim ,  Seung Chan Bang

IPC: H01Q21/06 ,  H01Q21/20 ,  H01Q21/26 ,  H01Q1/24 ,  H01Q21/22 ,  H04W16/28 ,  H04W36/00 ,  H04B7/06

Abstract: There are provided an antenna apparatus and a method of handover using the antenna apparatus. The antenna apparatus may comprise a plurality of antenna elements forming a plurality of beams in a predetermined service area. The plurality of antenna elements are arranged in a plurality of rows, and a number of antenna elements included in an uppermost row of the plurality of rows is smaller than a number of antenna elements included in a downmost row of the plurality of rows, and differences between center angles of beams formed by the antenna elements included in the downmost row are larger than differences between center angles of beams formed by the antenna elements included in the uppermost row.