公开(公告)号：US10812175B2

公开(公告)日：2020-10-20

申请号：US16450943

申请日：2019-06-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kap Seok Chang ,  Hyoung Jin Kwon ,  Sung Geun Jin ,  Yong Sun Kim ,  Seung Eun Hong ,  Woo Yong Lee ,  Hyun Kyu Chung

IPC: H04B7/155 ,  H04W72/12 ,  H04W24/08 ,  H04W72/08 ,  H04W84/04 ,  H04W74/04

Abstract: Provided is an apparatus and method for wideband short-range wireless communication using a directional antenna in a millimeter wave band, and the method for wideband short-range wireless communication according to an embodiment may determine a first time interval and a second time interval for a cooperated data frame transfer based on a packet transmission time at each transmission from a source node to a destination node, transmit a frame to a relay node through an antenna pattern directed towards the relay node at a start point of the first time interval, and transmit the frame to the destination node through an antenna pattern directed towards the destination node after a predetermined period of time from a start point of the second time interval.

公开(公告)号：US10278188B2

公开(公告)日：2019-04-30

申请号：US15864932

申请日：2018-01-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyoung Jin Kwon ,  Jin Kyeong Kim ,  Yong Sun Kim ,  Kyeongpyo Kim ,  Seung Eun Hong ,  Woo Yong Lee

IPC: H04W72/08 ,  H04B7/14 ,  H04L12/28 ,  H04J3/14 ,  H04L12/801 ,  H04B1/707 ,  H04L12/26 ,  H04B7/155 ,  H04L25/20 ,  H04W72/04

Abstract: Provided is an apparatus and method for transmitting and receiving data using multiple paths in a wireless communication system using a distributed Media Access Control (MAC). More particularly, provided is an apparatus and method for transmitting and receiving data that may select a path with a better channel status from multiple paths that include a direct path using a Line of Sight (LOS) and a relay path passing through a relay apparatus, in a wireless communication system that may transmit data via the LOS using a distributed MAC and a directional antenna.

公开(公告)号：US09641292B2

公开(公告)日：2017-05-02

申请号：US14925539

申请日：2015-10-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung Eun Hong ,  Il Gyu Kim ,  Seung Chan Bang

IPC: H04L5/00 ,  H04B7/04 ,  H04L27/26 ,  H04B7/06 ,  H04B7/0413

CPC classification number: H04L5/0023 ,  H04B7/0413 ,  H04B7/0617 ,  H04L27/2626

Abstract: Disclosed are a load modulation-based beamspace MIMO transmission method and apparatus. The beamspace MIMO transmission apparatus may include a plurality of impedance loading circuits each including a plurality of imaginary impedance devices, a beamspace MIMO control unit calculating loading values of the plurality of imaginary impedance devices, corresponding to a spatial multiplexing orthogonal frequency division multiplexing (OFDM) sample, and an RF chain unit generating a first signal having a predetermined carrier frequency.

公开(公告)号：US09641231B2

公开(公告)日：2017-05-02

申请号：US14844783

申请日：2015-09-03

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Duk Hyun You ,  Seung Eun Hong

IPC: H04B7/02 ,  H04B7/0413 ,  H04B7/06

CPC classification number: H04B7/0413 ,  H04B7/0617

Abstract: A method and apparatus for modulating a baseband signal in beam space MIMO are provided. The baseband signal modulation apparatus may calculate a load value of a plurality of antenna elements using a baseband signal. The baseband signal modulation apparatus may change a phase or a magnitude of a baseband signal or a first band signal having a higher frequency than that of the baseband signal to correspond to the calculated load value.

公开(公告)号：US20130223368A1

公开(公告)日：2013-08-29

申请号：US13778219

申请日：2013-02-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Yong Sun KIM ,  Seung Eun Hong ,  Jin Kyeong Kim ,  Woo Yong Lee

IPC: H04W52/02

CPC classification number: H04W52/0209 ,  Y02D70/142 ,  Y02D70/166

Abstract: A data transmission system that transmits data in a wireless environment such as a wireless communication network is provided. The data transmission system includes an access point (AP) and a terminal. The AP transmits control information to the terminal, and the terminal selects a data period to transmit the data based on the control information. The terminal may determine an operation clock, a channel bandwidth, and the like according to a data transmission rate of the data to be transmitted. The terminal may operate at a low operation clock according to the data transmission rate, thereby reducing power consumption.

Abstract translation: 提供了在诸如无线通信网络的无线环境中发送数据的数据传输系统。 数据传输系统包括接入点（AP）和终端。 AP向终端发送控制信息，并且终端基于控制信息选择数据周期以发送数据。 终端可以根据要发送的数据的数据传输速率来确定操作时钟，信道带宽等。 终端可以根据数据传输速率在低操作时钟下工作，从而降低功耗。