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41.发明公开公开(公告)号：US20230199533A1
公开(公告)日：2023-06-22
申请号：US17564495
申请日：2021-12-29
Inventor： Wooram SHIN , Kyeongpyo KIM , Young-Jo KO , Kapseok CHANG
CPC classification number: H04W24/08 , H04B1/69 , H04L5/0048 , H04W72/042
Abstract: An operation method of a base station in a communication system may include: performing an operation for channel measurement between the base station and a terminal; determining a size of multiple spreading resource blocks configured in a second two-dimensional (2D) domain based on a result of the channel measurement; transmitting information indicating the size of the multiple spreading resource blocks to the terminal; and performing a communication procedure with the terminal based on the multiple spreading resource blocks having the size.
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42.发明公开公开(公告)号：US20230188405A1
公开(公告)日：2023-06-15
申请号：US18080909
申请日：2022-12-14
Inventor： Kapseok CHANG , Yong Sun KIM , Won Cheol CHO , Young-Jo KO
CPC classification number: H04L27/362 , H04L27/3444
Abstract: An operation method of a first communication node in a communication system may include: generating a base sequence; performing a quadrature phase shift keying (QPSK) operation on the base sequence; generating a first signal sequence by performing a rotational transform operation by a first angle on a complex plane with respect to a result of the QPSK operation; modulating the first signal sequence to generate first modulation symbols; and transmitting a first signal composed of the first modulation symbols to a second communication node, wherein each of a plurality of elements constituting the first signal sequence has a real value or a pure imaginary value.
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公开(公告)号：US20230101594A1
公开(公告)日：2023-03-30
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
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：US20210226831A1
公开(公告)日：2021-07-22
申请号：US17221464
申请日：2021-04-02
Inventor： Kapseok CHANG , Wooyong LEE , Hyun-Kyu CHUNG
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：US20190159190A1
公开(公告)日：2019-05-23
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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Patent Agency Ranking
46.发明申请公开(公告)号：US20190014547A1
公开(公告)日：2019-01-10
申请号：US16114224
申请日：2018-08-28
Inventor： Il Gyu KIM , Hyeong Geun PARK , Young Jo KO , Kapseok CHANG , Hyo Seok YI , Young Hoon KIM , Seung Chan BANG
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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公开(公告)号：US20170295050A1
公开(公告)日：2017-10-12
申请号：US15480485
申请日：2017-04-06
Inventor： Kapseok CHANG , Moon-Sik LEE , Ohyun JO
CPC classification number: H04L27/2628 , H04J13/0062 , H04L5/0007 , H04L5/0053 , H04L27/2607 , H04L67/12
Abstract: A method and an apparatus for generating a synchronization signal in the Internet of things. In the method for generating a synchronization signal, subcarrier mapping may be performed by exchanging a signal allocated to an upper subcarrier group and a signal allocated to a lower subcarrier group among all subcarriers allocated for the synchronization signal with each other, in an in-band operation mode or a guard band operation mode of the Internet of things.
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公开(公告)号：US20170181152A1
公开(公告)日：2017-06-22
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
CPC classification number: H04W72/0406 , H04J13/0048 , H04J13/0062 , H04J13/18 , H04L1/0026 , H04L1/003 , H04L1/0031 , H04L1/1607 , H04L1/1692 , H04L1/1861 , H04L5/0017 , H04L23/02 , H04W72/0466
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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49.发明申请CELL SEARCH METHOD, FORWARD LINK FRAME TRANSMISSION METHOD, APPARATUS USING THE SAME AND FORWARD LINK FRAME STRUCTURE 审中-公开小区搜索方法，前向链路帧传输方法，使用它们的装置和前向链路帧结构公开(公告)号：US20170026922A1
公开(公告)日：2017-01-26
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.
Abstract translation: 一种搜索其中多个小区被分组成多个小区组的通信系统的移动站中的小区的方法，每个小区组包括至少两个小区，包括：检测主同步信号和辅同步信号 从接收到的信号; 以及基于所述主同步信号和所述次同步信号的组合来识别小区。 次同步信号与移动站所属的小区组相关，主同步信号与移动站所属小区相关。
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公开(公告)号：US20160127111A1
公开(公告)日：2016-05-05
申请号：US14928270
申请日：2015-10-30
Applicant: Electronics and Telecommunications Research Institute , HANDONG GLOBAL UNIVERCITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
Inventor： Kapseok CHANG , Seon-Ae KIM , Hyung Sik JU , Youngsik KIM
CPC classification number: H04L5/14 , H04B1/0458 , H04B1/123 , H04B1/18 , H04B1/50 , H04B1/525 , H04B15/00
Abstract: Disclosed is an in-band full duplex transceiver. The in-band full duplex transceiver may include a transmitter, a hybrid transformer, and an impedance matching unit. The hybrid transformer may include a first end connected to an antenna, may output a transmitting signal to the antenna, and may output a received signal provided through the antenna to the receiver. The impedance matching unit may include balance networks connected to a second end of the hybrid transformer and matching impedance of the antenna.
Abstract translation: 公开了一种带内全双工收发器。 带内全双工收发器可以包括发射机，混合变压器和阻抗匹配单元。 混合变压器可以包括连接到天线的第一端，可以向天线输出发射信号，并且可以将通过天线提供的接收信号输出到接收机。 阻抗匹配单元可以包括连接到混合变压器的第二端的平衡网络和天线的匹配阻抗。
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