公开(公告)号：US20160219539A1

公开(公告)日：2016-07-28

申请号：US15006362

申请日：2016-01-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： Junhyeong Kim ,  Sung woo Choi

IPC: H04W56/00 ,  H04W52/02

CPC classification number: H04W56/001 ,  H04W52/0206 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/164

Abstract: Disclosed herein is an adaptive communication method of a base station in a moving wireless backhaul network, including: acquiring frame transmitting/receiving timings of a terminal; periodically searching for a terminal synchronous signal transmitted from the terminal; if the terminal synchronous signal is detected, estimating the frame transmitting/receiving timings of the base station to/from the terminal based on the terminal synchronous signal and the frame transmitting/receiving timings of the terminal; and transmitting the base station synchronous signal to the terminal based on the frame transmitting/receiving timings of the base station.

Abstract translation: 这里公开了移动无线回程网络中的基站的自适应通信方法，包括：获取终端的发送/接收定时; 周期性地搜索从终端发送的终端同步信号; 如果检测到终端同步信号，则基于终端同步信号和终端的帧发送/接收定时估计基站到终端的帧发送/接收定时; 以及基于所述基站的帧发送/接收定时向所述终端发送所述基站同步信号。

公开(公告)号：US10064145B2

公开(公告)日：2018-08-28

申请号：US15006362

申请日：2016-01-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： Junhyeong Kim ,  Sung woo Choi

IPC: G08C17/00 ,  H04W56/00 ,  H04W52/02

CPC classification number: H04W56/001 ,  H04W52/0206 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/164

Abstract: Disclosed herein is an adaptive communication method of a base station in a moving wireless backhaul network, including: acquiring frame transmitting/receiving timings of a terminal; periodically searching for a terminal synchronous signal transmitted from the terminal; if the terminal synchronous signal is detected, estimating the frame transmitting/receiving timings of the base station to/from the terminal based on the terminal synchronous signal and the frame transmitting/receiving timings of the terminal; and transmitting the base station synchronous signal to the terminal based on the frame transmitting/receiving timings of the base station.

公开(公告)号：US20250141498A1

公开(公告)日：2025-05-01

申请号：US18935149

申请日：2024-11-01

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung woo Choi ,  Hee Sang Chung ,  Seon-Ae Kim ,  Junhyeong Kim

IPC: H04B7/04

Abstract: A beam updating method in a reconfigurable intelligent surface (RIS) is provided. The method includes: receiving data from a base station using a first polarization and receiving an RIS beamforming reference signal using a second polarization; fixing the reflection direction of the first polarization and sequentially changing the reflection direction of the second polarization to transmit reflected waves; and adjusting the direction of the second polarization based on optimal second polarization direction control information determined according to channel power values corresponding to the reflection direction of the second polarization.

公开(公告)号：US10097395B2

公开(公告)日：2018-10-09

申请号：US15493870

申请日：2017-04-21

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Bing Hui ,  Junhyeong Kim ,  Il Gyu Kim ,  Hoon Lee ,  Hee Sang Chung ,  Sung woo Choi

IPC: H04L27/34

Abstract: A transmitting apparatus for modulating data based on a predetermined 2q-QAM constellation and a receiving apparatus and method for demodulating a signal based on the predetermined 2q-QAM constellation, wherein the last q-2 bits corresponding to a quadrant of the predetermined 2q-QAM constellation are same with a gray code of a 2q-2-QAM constellation, the last q-2 bits corresponding to the remaining quadrants of the predetermined 2q-QAM constellation are determined by performing symmetric transformation for the last q-2 bits of the quadrant of the predetermined 2q-QAM around the x-axis or the y-axis.