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公开(公告)号：US10096907B2
公开(公告)日：2018-10-09
申请号：US15292897
申请日：2016-10-13
Inventor： Seung Eun Hong , Moon Sik Lee , Young Seog Song , Jun Hwan Lee , Eun Young Choi , Il Gyu Kim , Seung Chan Bang
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.
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2.发明申请公开(公告)号：US20160150546A1
公开(公告)日：2016-05-26
申请号：US14980768
申请日：2015-12-28
Inventor： Hyoung Jin Kwon , Jin Kyeong Kim , Yong Sun Kim , Kyeongpyo Kim , Seung Eun Hong , Woo Yong Lee
CPC classification number: H04W72/08 , H04B1/707 , H04B7/155 , H04L25/20 , H04L43/50 , H04L47/10 , H04W72/0426
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.
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3.发明公开公开(公告)号：US20240356701A1
公开(公告)日：2024-10-24
申请号：US18637822
申请日：2024-04-17
Inventor： Se Young CHO , Seung Eun Hong , Jee Hyeon Na
IPC: H04L5/00 , H04B7/0452 , H04W48/20
CPC classification number: H04L5/005 , H04B7/0452 , H04W48/20
Abstract: The present disclosure provides a method for pilot allocation using the Hungarian algorithm in a cell-free massive MIMO system. The method includes obtaining a first matrix by computing a large-scale channel gain between each of a plurality of UEs and each of a plurality of APs included in the cell-free massive MIMO system; assigning each of the plurality of UEs to a first group or a second group by using the first matrix; allocating a pilot to each UE in the second group; obtaining a second matrix by computing the reusability of pilots between each UE in the first group and each UE in the second group; and allocating a pilot to each UE in the first group by applying the Hungarian algorithm to the second matrix.
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公开(公告)号：US11742901B2
公开(公告)日：2023-08-29
申请号：US17380826
申请日：2021-07-20
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , Pukyong National University Industry-University Cooperation Foundation
Inventor： Seung Eun Hong , Hoon Lee , Seok Hwan Park , Jun Beom Kim
IPC: H04B7/0426 , G06N3/08 , H04B7/08
Abstract: Disclosed is a beamforming method using a deep neural network. The deep neural network may include an input layer, L hidden layers, and an output layer, and the beamforming method may include: obtaining channel information h between a base station and K terminals and a transmit power limit value P of the base station, and inputting h and P into the input layer; and performing beamforming on signals to be transmitted to the K terminals using beamforming vectors derived using the output layer and at least one activation function, wherein the base station transmits the signals to the K terminals using M transmit antennas. Here, the output layer may be configured in a direct beamforming learning (DBL) scheme, a feature learning (FL) scheme, or a simplified feature learning (SFL) scheme.
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公开(公告)号：US11323164B2
公开(公告)日：2022-05-03
申请号：US17069100
申请日：2020-10-13
Inventor： Seung Eun Hong , In Kyeong Choi , Tae Gyun Noh
IPC: H04B7/02 , H04B7/0456 , H04B7/024 , H04B7/06
Abstract: An operation method of a first AN for a hybrid beamforming-based cooperative transmission in a C-RAN includes obtaining a spatial channel covariance with terminals subject to a service; selecting a set of terminals to be serviced from among the terminals subject to the service; determining a radio frequency (RF) precoding matrix by which interference between the terminals to be serviced is minimized; transferring information on the determined RF precoding matrix to a centralized processor (CP); and generating an effective channel by configuring an RF precoder based on the determined RF precoding matrix.
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Patent Agency Ranking
公开(公告)号：US10979344B2
公开(公告)日：2021-04-13
申请号：US16529042
申请日：2019-08-01
Inventor： Seung Eun Hong , Kyeongpyo Kim , Yong Sun Kim , Hyoung Jin Kwon , Woo Yong Lee
IPC: H04L12/707 , H04W40/24 , H04L12/24 , H04L12/703 , H04W24/04
Abstract: Provided is a method and apparatus for setting a detour path in a wideband high frequency wireless system using a centralized Media Access Control (MAC) protocol. Here, in a wireless system using the centralized MAC protocol where a time synchronization and a band allocation may be performed by a single central control unit, when a signal blockage occurs while a data communication is being performed via a direct path between a source device and a destination device, the detour path may be quickly provided.
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公开(公告)号：US10764790B2
公开(公告)日：2020-09-01
申请号：US15904279
申请日：2018-02-23
Inventor： Hyoung Jin Kwon , Yong Sun Kim , Kap Seok Chang , Seung Eun Hong , Sung Geun Jin , Woo Yong Lee , Hyun Kyu Chung
IPC: H04B7/24 , H04J1/00 , H04W28/26 , H04W16/26 , H04W88/04 , H04B7/155 , H04W28/16 , H04W40/22 , H04W72/04 , H04W84/04 , H04W84/12
Abstract: Provided is a communication method of a coordinator in a wireless networks system that uses a reservation-based media access control (MAC). The communication method includes receiving, from a source device, a frame that requests a reservation resource for a relay device, to enable a frame that the source device transmits to a destination device to be relayed via the relay device, and allocating the reservation resource for the relay device, in response to the request.
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公开(公告)号：US09680534B2
公开(公告)日：2017-06-13
申请号：US14817202
申请日：2015-08-03
Inventor： Seung Eun Hong , Kap-Seok Chang , Hyoung-Jin Kwon , Yong Sun Kim , Woo-Yong Lee
IPC: H04B7/155 , H04B7/04 , H04W24/10 , H04B5/00 , H04B7/0408 , H04W36/08 , H04L12/28 , H04W40/22 , H04W76/02 , H04W36/00 , H04W36/30 , H04W88/08
CPC classification number: H04B5/0081 , H04B7/0408 , H04B7/15592 , H04L12/28 , H04W24/10 , H04W36/0005 , H04W36/08 , H04W36/30 , H04W40/22 , H04W76/14 , H04W88/085
Abstract: A method for performing a wideband short-range wireless communication which may use a directional antenna in a millimeter wave band, and the method for wideband short-range wireless communication according to an embodiment may determine a change of a relay operation type based on a link quality between a source node and a relay node, a link quality between the relay node and the destination node, and a link quality between the source node and the destination node, transmit a relay operation change (ROC) request message in response to a determination of the change of the relay operation type, and receive an ROC response message corresponding to the ROC request message.
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9.发明授权Wireless communication method and apparatus for transmitting and receiving frame through relay 有权用于通过继电器发送和接收帧的无线通信方法和装置公开(公告)号：US09590719B2
公开(公告)日：2017-03-07
申请号：US14472298
申请日：2014-08-28
Inventor： Kap Seok Chang , Hyoung Jin Kwon , Sung Geun Jin , Yong Sun Kim , Seung Eun Hong , Woo Yong Lee , Hyun Kyu Chung
IPC: H04W48/16 , H04W40/24 , H04W40/12 , H04W24/00 , H04W72/08 , H04B7/14 , H04B7/155 , H04B7/26 , H04W40/22
CPC classification number: H04B7/15528 , H04B7/15592 , H04B7/2606 , H04W40/22 , Y02D70/00 , Y02D70/142 , Y02D70/39 , Y02D70/446 , Y02D70/449
Abstract: The present invention provides a wireless communication method used for transmitting and receiving a relay in a wireless local area network system. The wireless local area network system according to an embodiment of the present invention relates to a wireless communication method of setting a relay link through a relay and setting a transmission time point at which a data frame is transmitted in a source device by recognizing a propagation delay between devices, and the like when an operation mode of the set relay corresponds to a cooperating mode.
Abstract translation: 本发明提供一种用于在无线局域网系统中发送和接收中继的无线通信方法。 根据本发明的实施例的无线局域网系统涉及通过中继设置中继链路的无线通信方法，并且通过识别传播延迟来设置在源设备中发送数据帧的传输时间点 当设置的继电器的操作模式对应于协作模式时，在设备之间等。
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10.发明授权公开(公告)号：US09584212B2
公开(公告)日：2017-02-28
申请号：US14550365
申请日：2014-11-21
Inventor： Hyoung Jin Kwon , Yong Sun Kim , Sung Geun Jin , Kap Seok Chang , Seung Eun Hong , Woo Yong Lee , Hyun Kyu Chung
CPC classification number: H04B7/15557 , H04B7/1555 , H04L5/14 , H04L45/22 , H04W24/00 , H04W24/08 , H04W72/02 , H04W84/047
Abstract: A communication method of a source device according to an embodiment includes detecting a status of a first link directly connected from the source device to a destination device or a status of a second link connected from the source device to the destination device via a relay device, selecting any one of the first link and the second link based on a result of the detection, and transmitting data using the selected link.
Abstract translation: 根据实施例的源设备的通信方法包括：经由中继设备检测从源设备直接连接到目的地设备的第一链路的状态或从源设备连接到目的设备的第二链路的状态， 基于检测结果选择第一链路和第二链路中的任何一个，以及使用所选择的链路发送数据。
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