公开(公告)号：US12066526B2

公开(公告)日：2024-08-20

申请号：US17557831

申请日：2021-12-21

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyung Ju Kim ,  Sung Jin Yoo ,  Byung Jang Jeong ,  Woo Jin Byun ,  In Kui Cho

IPC: G01S13/88 ,  G01S7/41 ,  G01S13/00 ,  G01S13/42

CPC classification number: G01S13/882 ,  G01S7/418 ,  G01S13/003 ,  G01S13/424

Abstract: A method for calculating an altitude of a target through an apparatus for calculating an altitude of the target, which comprises a plurality of MIMO radar virtual antennas, may comprise: receiving electromagnetic waves reflected from the target through a pair of virtual antennas classified into an upper antenna and a lower antenna and alternately arranged in two columns linearly; obtaining range information and phase information of the target from the pair of virtual antennas by analyzing the electromagnetic waves; and calculating altitude information of the target from position information of the pair of virtual antennas, and the range information and the phase information.

公开(公告)号：US11804938B2

公开(公告)日：2023-10-31

申请号：US17110601

申请日：2020-12-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Young Jo Ko ,  Tae Gyun Noh ,  Kyoung Seok Lee ,  Bang Won Seo ,  Byung Jang Jeong ,  Heesoo Lee

IPC: H04L5/00 ,  H04L1/00 ,  H04L1/1607 ,  H04L1/1829 ,  H04L1/1867 ,  H04W72/20 ,  H04W72/23

CPC classification number: H04L5/0055 ,  H04L1/0027 ,  H04L1/1614 ,  H04L1/1671 ,  H04L1/1854 ,  H04L1/1893 ,  H04L5/001 ,  H04L5/0001 ,  H04L5/0048 ,  H04L5/0094 ,  H04W72/20 ,  H04L1/0073 ,  H04L5/0023 ,  H04L5/0082 ,  H04W72/23

Abstract: Provided is a data transmission system using a carrier aggregation. The data transmission system may assign a radio resource based on a correspondence relationship between a downlink and an uplink, and may transmit data using the assigned radio resource.

公开(公告)号：US11796631B2

公开(公告)日：2023-10-24

申请号：US16924739

申请日：2020-07-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Byung Jang Jeong ,  Woo Jin Byun

IPC: G01S7/35 ,  G01S13/36

CPC classification number: G01S7/352 ,  G01S13/36 ,  G01S7/356

Abstract: A method of transmitting and receiving an orthogonal frequency division multiplexing (OFDM) signal for radio detection and ranging (radar) applications, and apparatuses performing the method are disclosed. The method includes receiving an OFDM signal in which a cyclic prefix (CP) is not included and converting the received OFDM signal to a received discrete time-domain signal through an analog-to-digital converter (ADC), selecting sub-carrier symbols to be input to a fast Fourier transform (FFT) from among all sub-carrier symbols included in the received discrete time-domain signal by performing windowing on the received discrete time-domain signal by a window that is based on an estimated value of a maximum delay that occurs potentially in a channel, converting the received discrete time-domain signal to a received frequency-domain signal by inputting the selected sub-carrier symbols to the FFT, and performing channel estimation based on the received frequency-domain signal.

公开(公告)号：US09236922B2

公开(公告)日：2016-01-12

申请号：US13845760

申请日：2013-03-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jae Hyun Park ,  Sung Jin Yoo ,  Myung Sun Song ,  Byung Jang Jeong ,  Jae Ick Choi

IPC: H04B15/00 ,  H04B7/04

CPC classification number: H04B7/0456

Abstract: A communication method of a base station and a terminal based on interference alignment in a multi-cell multi-user multiple-input multiple-output (MIMO) interference channel and a method and apparatus of communication using interference alignment and block successive interference pre-cancellation in a multi-user MIMO interference channel. The base station may determine a precoding matrix to maximize a signal to interference and noise ratio (SINR) and a signal to leakage and noise ratio (SLNR) in the interference channel, and a terminal communicating with the base station may determine a decoding matrix to align interference. The transmitter including a multicell interference channel may calculate a rotation matrix for interference alignment, identify effective symbol vectors using the rotation matrix, and generate a transmit signal of a target transmitter to pre-cancel interference corresponding to a transmit signal of a neighboring transmitter.

Abstract translation: 基于多小区多用户多输入多输出（MIMO）干扰信道中的干扰对准的基站和终端的通信方法以及使用干扰对准和块连续干扰预取消的通信的方法和装置 在多用户MIMO干扰信道中。 基站可以确定预编码矩阵以使干扰信道中的信号与干扰和噪声比（SINR）以及信号与泄漏和噪声比（SLNR）最大化，并且与基站通信的终端可以确定解码矩阵 对准干扰。 包括多小区干扰信道的发射机可以计算用于干扰对准的旋转矩阵，使用旋转矩阵识别有效符号向量，并且生成目标发射机的发射信号以预先抵消与相邻发射机的发射信号相对应的干扰。

公开(公告)号：US09094836B2

公开(公告)日：2015-07-28

申请号：US13921150

申请日：2013-06-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong Hun Lee ,  Hyun Duk Kang ,  Byung Jang Jeong

IPC: H04W16/14

CPC classification number: H04W16/14

Abstract: Provided is a method of calculating a fairness index that is a criterion indicating fairness of resource allocation between coexistence managers in a coexistence management system, the method including: calculating a normalized resource allocation amount by normalizing an amount of resources allocated to a corresponding coexistence manager to an amount of resources required by the corresponding coexistence manager with respect to each of the coexistence managers; and calculating the fairness index using the normalized resource allocation amounts calculated with respect to the respective coexistence managers.

Abstract translation: 提供了一种计算作为表示共存管理系统中的共存管理者之间的资源分配的公正性的标准的公平指标的方法，所述方法包括：通过将分配给相应的共存管理器的资源的数量归一化来计算归一化的资源分配量， 相应的共存经理对每个共存经理所需的资源数量; 以及使用针对相应的共存管理器计算的归一化资源分配量来计算公平性指标。

公开(公告)号：US10911136B2

公开(公告)日：2021-02-02

申请号：US16203394

申请日：2018-11-28

Applicant: Electronics and Telecommunications Research Institute ,  FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Byung Jang Jeong ,  Woo Jin Byun ,  Ji-Hoon Yun ,  Jae-Han Lim ,  Wisnu Murti

IPC: H04B7/22 ,  H04B7/0456 ,  H04L1/00 ,  H04B1/00 ,  H04B7/08

Abstract: Disclosed are a communication method and communication apparatus using an ambient backscatter communication. A transmission apparatus may include generating a plurality of bitsets by fragmenting data based on a predetermined bitset length, mapping the plurality of bitsets to a plurality of switching patterns based on a data size, and controlling a reflection of a background radio frequency (RF) signal based on a corresponding mapped switching pattern, a total number of the plurality of switching patterns may be determined based on the bitset length, and each of the plurality of switching patterns may have a different length.

公开(公告)号：US09706370B2

公开(公告)日：2017-07-11

申请号：US14394416

申请日：2013-04-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Hyun Hwang ,  Byung Jang Jeong ,  Gwang Zeen Ko ,  Frangklin A Antony

IPC: H04W72/00 ,  H04W4/06 ,  H04W72/04

CPC classification number: H04W4/06 ,  H04W72/048 ,  Y02D70/20

Abstract: Provided is an apparatus and method for managing a backup channel for cognitive radio communication that may group at least one device included in a cell served by a base station, and allocate backup channels for cognitive radio communication to the groups, based on location information and mobility of the groups.

公开(公告)号：US09485666B2

公开(公告)日：2016-11-01

申请号：US14694196

申请日：2015-04-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kyu Min Kang ,  Jae Cheol Park ,  Byung Jang Jeong ,  Sang In Cho

IPC: H04W72/04 ,  H04W16/14 ,  H04W64/00

CPC classification number: H04W16/14 ,  H04W64/00

Abstract: Disclosed are an available channel information sharing system and an available channel information sharing method, and an available channel information sharing system and an available channel information sharing method based on positional information and area information. The available channel information sharing system sharing available channel information for each unit region includes: a server; a white band device placed in the unit region; and a white band sensing device creating positional information and transmitting the created positional information to the server, receiving unit region information corresponding to the positional information from the server, and transmitting first available channel information based on channel information of a sensed broadcasting signal to the white band device.

Abstract translation: 公开了一种可用的信道信息共享系统和可用的信道信息共享方法，以及基于位置信息和区域信息的可用信道信息共享系统和可用信道信息共享方法。 每个单元区域可用的信道共享系统共享可用信道信息包括：服务器; 放置在单元区域中的白带装置; 以及白带感测装置，其创建位置信息并将所创建的位置信息发送到服务器，从服务器接收与位置信息相对应的接收单元区域信息，并且基于感测到的广播信号的信道信息向白色发送第一可用信道信息 带设备。

公开(公告)号：US09467924B2

公开(公告)日：2016-10-11

申请号：US14175362

申请日：2014-02-07

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong Hun Lee ,  Byung Jang Jeong

IPC: H04W36/00 ,  H04W36/32

CPC classification number: H04W36/32

Abstract: An method for performing a TVBD (TV Band Device) group handover based on TV white space by an AP (Access Point), the method comprising: transmitting multiple location information corresponding to a path along which a mobile vehicle travels to an available channel information providing server; receiving multiple geo-location information from the available channel information providing server as a reply to the transmitted multiple location information; extracting operating channel set information so as to minimize a channel switching caused by the travel of the mobile vehicle, based on the multiple geo-location information; and transmitting the extracted operating channel set information to a TVBD group.

Abstract translation: 一种用于通过AP（接入点）执行基于TV白空间的TVBD（TV Band Device）组切换的方法，所述方法包括：将与移动车辆行驶的路径相对应的多个位置信息发送到提供的可用信道信息 服务器; 从所述可用信道信息提供服务器接收多个地理位置信息作为对所发送的多个位置信息的回复; 基于所述多个地理位置信息，提取操作信道集信息，以使由所述移动车辆的行驶所引起的信道切换最小化; 以及将所提取的操作信道集信息发送到TVBD组。

公开(公告)号：US09161243B2

公开(公告)日：2015-10-13

申请号：US13923262

申请日：2013-06-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyun Duk Kang ,  Dong Hun Lee ,  Byung Jang Jeong

IPC: H04B17/00 ,  H04W24/02 ,  H04W16/14

CPC classification number: H04W24/02 ,  H04W16/14

Abstract: Provided are a coexistence management system for measuring channel information between spectrum sharing devices and a method thereof. The coexistence management system for measuring channel information between spectrum sharing devices according to the exemplary embodiment of the present invention includes: a plurality of coexistence enablers (CEs) which is provided for each of the plurality of white space objects (WSOs) having at least one measurement capability of measuring channel information on an operation channel that is being used; a coexistence manager (CM) which is linked with at least one CE within a group to confirm measurement capability of a corresponding WSO and receives channel information on the operation channel from one or more WSOs within another neighboring groups according to the confirmed result; and a coexistence discovery and information server (CDIS) which registers at least one measurement capability for each of the plurality of WSOs.

Abstract translation: 提供了一种用于测量频谱共享设备之间的信道信息的共存管理系统及其方法。 根据本发明的示例性实施例的用于测量频谱共享设备之间的频道信息的共存管理系统包括：为具有至少一个的多个空白物体（WSO）中的每一个提供的多个共存使能器（CE） 在正在使用的操作信道上测量信道信息的测量能力; 与组内的至少一个CE相连的共存管理器（CM），以确认对应的WSO的测量能力，并且根据确认的结果从另一相邻组中的一个或多个WSO接收关于操作信道的信道信息; 以及向多个WSO中的每一个注册至少一个测量能力的共存发现和信息服务器（CDIS）。