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公开(公告)号：US12041512B2
公开(公告)日：2024-07-16
申请号：US17563272
申请日：2021-12-28
Inventor： Keun Young Kim , Seung Chan Bang , Young-Jo Ko , Kapseok Chang , Il Gyu Kim
CPC classification number: H04W4/029 , G01S5/0264 , G01S5/0273 , G06V20/50
Abstract: A positioning method using images and radio waves may include: estimating a distance and an angle from the positioning reference node to a positioning target terminal; identifying an obstacle or reflective object in a vicinity of the positioning target terminal or on a path between the positioning target terminal and the positioning reference node by using image information on the positioning target terminal at a position estimated by the distance and the angle; estimating an incident angle or a reflection angle of a radio wave signal reflected by the reflective object identified based on the image information; and estimating a position of the positioning target terminal based on the reflection angle and the distance.
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公开(公告)号：US10917877B2
公开(公告)日：2021-02-09
申请号：US16253260
申请日：2019-01-22
Inventor： Young-Jo Ko , Hyeong-Geun Park , Il-Gyu Kim , Kapseok Chang , Hyoseok Yi , Young-Hoon Kim , Seung-Chan Bang
Abstract: When a plurality of terminals share the same resources in a wireless communication system, and when control information such as acknowledgement/negative acknowledgement (ACK/NAK) information or scheduling information is transmitted, a method of efficiently performing code division multiplexing (CDM) is required to distinguish the plurality of terminals. In particular, it is necessary to develop a method by which a code sequence of CDM can be selected and used according to each cell condition. Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly share frequency and time resources. The method includes the operations of receiving condition information in a cell; selecting one of a plurality of time domain orthogonal sequences having different lengths, according to the condition information; and allocating the selected time domain orthogonal sequence to a control signal symbol block.
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公开(公告)号：US10237905B2
公开(公告)日：2019-03-19
申请号：US15321852
申请日：2015-05-05
Inventor： Kapseok Chang , Byung-Jae Kwak
IPC: H04W76/14 , H04B17/336 , H04W76/11 , H04W72/12 , H04W72/02
Abstract: A first terminal generates a first scheduling request signal including information about first data resources for data transmission when the first terminal tries to reserve the first data resources. The first terminal generates a first scheduling request indication signal providing notification that the first scheduling request signal is to be transmitted. The first terminal transmits the first scheduling request indication signal through a first request subslot included in a first scheduling request resource before transmitting the first scheduling request signal. The first terminal transmits the first scheduling request signal through a second request subslot included in the first scheduling request resource.
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公开(公告)号：US10225824B2
公开(公告)日：2019-03-05
申请号：US15452541
申请日：2017-03-07
Inventor： Young-Jo Ko , Hyeong-Geun Park , Il-Gyu Kim , Kapseok Chang , Hyoseok Yi , Young-Hoon Kim , Seung-Chan Bang
Abstract: When a plurality of terminals share the same resources in a wireless communication system, and when control information such as acknowledgement/negative acknowledgement (ACK/NAK) information or scheduling information is transmitted, a method of efficiently performing code division multiplexing (CDM) is required to distinguish the plurality of terminals. In particular, it is necessary to develop a method by which a code sequence of CDM can be selected and used according to each cell condition. Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly share frequency and time resources. The method includes the operations of receiving condition information in a cell; selecting one of a plurality of time domain orthogonal sequences having different lengths, according to the condition information; and allocating the selected time domain orthogonal sequence to a control signal symbol block.
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公开(公告)号：US10080204B2
公开(公告)日：2018-09-18
申请号：US15286600
申请日：2016-10-06
Inventor： Il Gyu Kim , Hyeong Geun Park , Young Jo Ko , Kapseok Chang , Hyo Seok Yi , Young Hoon Kim , Seung Chan Bang
CPC classification number: H04W56/001 , H04J11/0069 , H04J11/0093 , H04L5/0037 , H04L5/005 , H04L5/0053 , H04L27/2613 , H04L27/2655 , H04L27/2675 , H04W36/0061 , H04W36/08 , H04W56/00
Abstract: A method of searching a cell in a mobile station of a communication system in which a plurality of cells are grouped into a plurality of cell groups, each cell group including at least two cells, includes: detecting a primary synchronization signal and a secondary synchronization signal from a received signal; and identifying a cell based on a combination of the primary synchronization signal and the secondary synchronization signal. The secondary synchronization signal is related to the cell group to which the mobile station belongs and the primary synchronization signal is related to the cell to which the mobile station belongs within the cell group.
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Patent Agency Ranking
公开(公告)号：US20180159708A1
公开(公告)日：2018-06-07
申请号：US15871760
申请日：2018-01-15
Inventor： Kapseok Chang , Wooyong Lee , Hyun-Kyu Chung
CPC classification number: H04L27/261 , H04L27/2613 , H04L27/2692 , H04W56/0085 , H04W72/04 , H04W84/12
Abstract: Disclosed is a technique related to a method and apparatus for generating a preamble and a data frame for wireless communication, and to a synchronization estimation method using the preamble. According to the technique, a method for generating a frame for wireless communication is disclosed, wherein the method comprises: a step of generating a modified sequence using a first base sequence for synchronization estimation; and a step of allocating the first base sequence and the modified sequence to the frequency domain of a first timeslot to generate a preamble. The modified sequence includes a complex conjugated sequence of the first base sequence or a sequence having a code different from that of the first base sequence.
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公开(公告)号：US09973326B2
公开(公告)日：2018-05-15
申请号：US14943656
申请日：2015-11-17
Inventor： Kapseok Chang , Seon-Ae Kim , Hyung Sik Ju
IPC: H04L5/14
CPC classification number: H04L5/1461
Abstract: Provided are an apparatus and method for transmitting/receiving a signal. The method for transmitting/receiving a signal includes reducing a quantization error in a baseband (BB) analog area with respect to a reception signal, and performing self-interference cancellation (SIC) on a first output signal output from a BB analog circuit unit in a digital area.
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28.发明授权Method and apparatus for allocating sequence to synchronization channel for node identification in wireless communication system 有权用于在无线通信系统中为节点识别的同步信道分配序列的方法和装置公开(公告)号：US09065599B2
公开(公告)日：2015-06-23
申请号：US14269440
申请日：2014-05-05
Inventor： Kapseok Chang , Young-Hoon Kim , Woo Yong Lee , Hyun Kyu Chung
CPC classification number: H04L5/0007 , H04B7/14 , H04L5/0032 , H04L5/0037 , H04L5/0048 , H04L25/03866 , H04L27/2613 , H04L27/2655
Abstract: Provided is an apparatus for allocating a sequence to a synchronization channel for a node identification (ID), the apparatus including: a base node sequence generator to generate a base sequence that is a sequence for a node ID of a base node; a relay node sequence generator to generate a relay sequence that is a sequence for a node ID of a relay node by transforming the base sequence; a baseband signal generator to generate a baseband signal by mapping the base sequence or the relay sequence to a frequency domain and a time domain; and a transmitter to transmit the baseband signal.
Abstract translation: 提供了一种用于将序列分配给用于节点标识（ID）的同步信道的装置，所述装置包括：基本节点序列生成器，用于生成作为基本节点的节点ID的序列的基本序列; 中继节点序列发生器，用于通过转换所述基本序列来产生作为中继节点的节点ID的序列的中继序列; 基带信号发生器，用于通过将基本序列或中继序列映射到频域和时域来产生基带信号; 以及用于发送基带信号的发射机。
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公开(公告)号：US10542511B2
公开(公告)日：2020-01-21
申请号：US15670294
申请日：2017-08-07
Inventor： Kapseok Chang , Moon-Sik Lee
Abstract: A method and an apparatus for primary synchronization in the Internet of things. A receiver samples a primary synchronization signal into a digital signal to generate a first sampling signal and down sample a first sampling signal into a second sampling signal. The receiver estimates a first sample timing offset (STO) and a first frequency offset (FO) using the first sampling signal and the second sampling signal.
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30.发明授权公开(公告)号：US10177894B2
公开(公告)日：2019-01-08
申请号：US15187927
申请日：2016-06-21
Inventor： Kapseok Chang , Hyung Sik Ju
Abstract: A method and an apparatus for tuning an FIR filter in an in-band full duplex transceiver. The method for tuning an FIR filter may include: setting attenuation of the FIR filter to be a first value and then estimating input information of the FIR filter; estimating a delta response using the estimated input information of the FIR filter; and updating the attenuation of the FIR filter to a second value using the estimated delta response.
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