公开(公告)号：US20140334284A1

公开(公告)日：2014-11-13

申请号：US13964253

申请日：2013-08-12

Applicant: Electronics And Telecommunications Research Institute

Inventor： Woo Jin BYUN ,  Yong Heui CHO ,  Kwang Seon KIM ,  Min soo KANG ,  Bong-Su KIM

IPC: H04J11/00

CPC classification number: H04J15/00

Abstract: A signal transmission and reception method includes generating a plurality of electromagnetic wave mode functions having orthogonality in a spatial domain using a plurality of input signals, synthesizing and wirelessly transmitting the generated electromagnetic wave mode functions, receiving a revolution division multiplexing electromagnetic wave having characteristics of phase rotation in directions of an azimuth angle and an elevation angle, and discriminating the electromagnetic wave mode functions through an orthogonal operation, and restoring an output signal through correction of the discriminated electromagnetic wave mode functions.

Abstract translation: 信号发送接收方法包括使用多个输入信号在空间域中生成具有正交性的多个电磁波模式功能，合成并无线地发送所生成的电磁波模式功能，接收具有相位特性的旋转分复用电磁波 方位角和仰角的方向的旋转，以及通过正交操作来识别电磁波模式功能，以及通过校正所识别的电磁波模式功能来恢复输出信号。

公开(公告)号：US20210360420A1

公开(公告)日：2021-11-18

申请号：US17318099

申请日：2021-05-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Sun UM ,  Bong-Su KIM ,  Igor KIM ,  Seung Keun PARK

IPC: H04W16/14 ,  H04W48/02 ,  H04W52/24 ,  H04W72/08 ,  H04W72/04

Abstract: Provided is a method and apparatus for determining an operating condition for frequency coexistence and an operating condition determining method includes a method of calculating and transferring an inference-free available frequency and an output level to an existing radio station that operates and needs to be protected or a method of calculating a channel access parameter for sharing a frequency with a heterogeneous device, a network, or a system.

公开(公告)号：US20140254726A1

公开(公告)日：2014-09-11

申请号：US13912752

申请日：2013-06-07

Applicant: Foundation For Research And Business Seoul National University Of Science And Technology ,  Electronics And Telecommunications Research Institute

Inventor： Bong-Su KIM ,  Kwang Seon Kim ,  Min Soo Kang ,  Woo Jin Byun ,  Hung Chul Park

IPC: H04B7/04 ,  H01Q21/00

CPC classification number: H04B7/0413 ,  H01Q3/24 ,  H01Q21/0006 ,  H04B7/0604

Abstract: An antenna switching apparatus based on spatial modulation includes a plurality of antennas; a control signal generator configured to generate a plurality of switching control signals; and a plurality of switches configured to switch on to apply a transmission signal to the respective antennas according to the respective switching control signals. Further, the antenna switching apparatus includes a delay analyzer configured to receive the transmission signal output from each of the plurality of switches to calculate delay information for synchronizing the switching control signals applied to the respective switches; and a delay adjuster configured to synchronize the switching control signals to apply the synchronized switching control signals to the respective switches according to the calculated delay information.

Abstract translation: 基于空间调制的天线切换装置包括多个天线; 被配置为产生多个切换控制信号的控制信号发生器; 以及多个开关，其被配置为根据各个开关控制信号接通以将发送信号施加到各个天线。 此外，天线切换装置包括：延迟分析器，被配置为接收从多个开关中的每一个输出的发送信号，以计算用于使施加到各个开关的开关控制信号同步的延迟信息; 以及延迟调整器，被配置为使切换控制信号同步，以根据所计算的延迟信息将同步的切换控制信号施加到各个开关。

公开(公告)号：US20250106645A1

公开(公告)日：2025-03-27

申请号：US18676902

申请日：2024-05-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Bong-Su KIM ,  Seung Keun PARK

IPC: H04W16/14 ,  H04B17/336 ,  H04W28/02

Abstract: A method of generating a protected area contour for frequency sharing is disclosed. The method of generating a protected area contour for frequency sharing, according to an embodiment, may include: calculating, for a first wireless station, an interference-to-noise ratio (INR) that is an effect of interference by a second wireless station sharing a frequency band with the first wireless station; setting an analysis area in which the interference is predicted to occur in a surrounding area of the first wireless station based on the INR; and generating a protected area contour of the first wireless station based on the analysis area and the INR.

公开(公告)号：US20140162652A1

公开(公告)日：2014-06-12

申请号：US13949605

申请日：2013-07-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Min Soo KANG ,  Kwang Seon KIM ,  Bong-Su KIM ,  Woo Jin BYUN

IPC: H04W36/32 ,  H04W52/28

CPC classification number: H04W36/32 ,  H04W52/283 ,  H04W52/285

Abstract: Provided is a method for handover for wireless communication of a high-speed mobile. The method may include receiving, from a candidate communication base station able to communicate with the high-speed mobile, location information of the candidate communication base station and location information of a neighboring communication base station near the candidate communication base station, obtaining current location information and speed information of the high-speed mobile based on global positioning system (GPS) satellite information of the high-speed mobile and topographic information around the high-speed mobile, determining an optimal communication base station among the candidate communication base station and the neighboring communication base station, based on the location information of the candidate communication base station, the location information of the neighboring communication base station, the current location information of the high-speed mobile, and the speed information of the high-speed mobile, and executing handover to the optimal communication base station.

Abstract translation: 提供了一种用于高速移动的无线通信的切换方法。 该方法可以包括从能够与高速移动通信的候选通信基站接收候选通信基站的位置信息和候选通信基站附近的相邻通信基站的位置信息，获得当前位置信息 并基于全球定位系统（GPS）对高速移动的高速移动卫星信息和地形信息进行高速移动的速度信息，确定候选通信基站和邻近基站之间的最佳通信基站 通信基站，基于候选通信基站的位置信息，相邻通信基站的位置信息，高速移动站的当前位置信息以及高速移动站的速度信息，并执行 切换到最佳通信ba se站。

公开(公告)号：US20210127282A1

公开(公告)日：2021-04-29

申请号：US17072478

申请日：2020-10-16

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Sun UM ,  Seung Keun PARK ,  Bong-Su KIM ,  Igor KIM

IPC: H04W24/08 ,  H04L5/00 ,  H04W72/12

Abstract: A resource usage measuring method and an apparatus performing the same. The resource usage measuring method includes measuring a resource usage in a frequency domain based on a demodulation reference signal (DM-RS) transmitted from a base station, and measuring a resource usage in a time domain based on the DM-RS.

公开(公告)号：US20140333503A1

公开(公告)日：2014-11-13

申请号：US13949358

申请日：2013-07-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Woo Jin BYUN ,  Yong Heui CHO ,  Min Soo KANG ,  Kwang Seon KIM ,  Bong-Su KIM

IPC: H01Q3/34

CPC classification number: H01Q21/065 ,  H01Q3/46

Abstract: A reflectarray antenna for wireless telecommunication includes a ground plane; a dielectric substrate attached on the ground plane; and a first antenna patch formed on one side of the dielectric substrate. Further, the reflectarray antenna includes a second antenna patch formed adjacent to the first antenna patch with a separation area therebetween; and a phase adjustment member disposed in the separation area to adjust a phase of a scattered field of the antenna by the appliance of a DC voltage.

Abstract translation: 用于无线电信的反射阵列天线包括接地平面; 附着在接地平面上的电介质基板; 以及形成在电介质基板的一侧上的第一天线贴片。 此外，反射阵列天线包括与第一天线贴片相邻形成的第二天线贴片，其间具有分隔区域; 以及相位调整部件，其设置在所述分离区域中，以通过直流电压的器具来调整所述天线的散射场的相位。

公开(公告)号：US20140286449A1

公开(公告)日：2014-09-25

申请号：US13922819

申请日：2013-06-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kwang Seon KIM ,  Min Soo KANG ,  Bong-Su KIM ,  Woo Jin BYUN

IPC: H04B7/04

CPC classification number: H04B7/0602

Abstract: A wireless link apparatus includes a plurality of antennas; a signal detector configured to calculate SNR based on a signal received from at least one of the plurality of antennas; and a mode selector configured to determine the number of an antenna to be used in modulation method and signal transmission by comparing the calculated SNR with a preset critical value. Further, the wireless link apparatus includes a transmitter configured to modulate a signal in the modulation method determined by the mode selector and transmit the modulated signal using an antenna corresponding to the determined number of the antennas.

Abstract translation: 无线链路装置包括多个天线; 信号检测器，被配置为基于从所述多个天线中的至少一个天线接收的信号来计算SNR; 以及模式选择器，被配置为通过将所计算的SNR与预设临界值进行比较来确定调制方法和信号传输中要使用的天线的数量。 此外，无线链路装置包括：发射机，被配置为以由模式选择器确定的调制方式调制信号，并使用与确定数量的天线对​​应的天线发射调制信号。

公开(公告)号：US20130322330A1

公开(公告)日：2013-12-05

申请号：US13712185

申请日：2012-12-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Bong-Su KIM ,  Kwang-Seon KIM ,  Min-Soo KANG ,  Woo-Jin BYUN

IPC: H04W16/00

CPC classification number: H04W16/00 ,  H04B7/0413 ,  H04W84/005

Abstract: A communication apparatus for a group moving object in a communication system includes a Radio Frequency (RF) transmission/reception unit configured to simultaneously set up links with two or more Base Stations (BSs) placed on right and left sides of a road or a track, a baseband unit configured to perform baseband signal processing on signals transmitted and received through the RF transmission/reception unit, and a network interface unit connected to the baseband unit and configured to establish an Ethernet connection for providing communication service to devices within the group moving object.

Abstract translation: 通信系统中的组移动对象的通信装置包括：射频（RF）发送/接收单元，被配置为与道路或轨道的右侧和左侧放置的两个或多个基站（BS）同时建立链路 基带单元，被配置为对通过RF发送/接收单元发送和接收的信号执行基带信号处理;以及网络接口单元，其连接到所述基带单元，并且被配置为建立用于向所述组内移动的设备提供通信服务的以太网连接 目的。