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公开(公告)号：US10728069B2
公开(公告)日：2020-07-28
申请号：US16050910
申请日：2018-07-31
Inventor： IL-Gu Lee , Eun-Young Choi , Sok-Kyu Lee
Abstract: A method for automatically detecting a packet mode in a wireless communication system supporting a multiple transmission mode includes: acquiring at least one of data rate information, packet length information and channel bandwidth information from a transmitted frame; and determining the packet mode on the basis of the phase rotation check result of a symbol transmitted after a signal field signal and at least one of the data rate information, the packet length information and the channel bandwidth information acquired from the transmitted frame.
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公开(公告)号：US10932155B2
公开(公告)日：2021-02-23
申请号：US16721691
申请日：2019-12-19
Inventor： Hee-Jung Yu , Taehyun Jeon , Myung-Soon Kim , Eun-Young Choi , Sok-kyu Lee , Deuk-Su Lyu
Abstract: In the present invention, data generated from a source unit are distributed to at least one bandwidth; the data distributed to the respective bandwidths are encoded in order to perform an error correction; the encoded data are distributed to at least one antenna; a subcarrier is allocated to the data distributed to the respective antennas, and an inverse Fourier transform is performed; a short preamble and a first long preamble corresponding to the subcarrier are generated; a signal symbol is generated according to a data transmit mode; and a frame is generated by adding a second long preamble between the signal symbol and a data field for the purpose of estimating a channel of a subcarrier which is not used.
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公开(公告)号：US10547998B2
公开(公告)日：2020-01-28
申请号：US15577601
申请日：2017-04-21
Inventor： Sung-Hyun Moon , Cheulsoon Kim , Ji Hyung Kim , Minhyun Kim , Junghoon Lee , Eun-Young Choi
Abstract: A transmission method of a base station is provided. The base station generates a first discovery signal block including a first PSS (primary synchronization signal) and a first SSS (secondary synchronization signal). The base station generates a second discovery signal block including a second PSS and a second SSS. Also, the base station transmits the first discovery signal block and the second discovery signal block.
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公开(公告)号：USRE47522E1
公开(公告)日：2019-07-16
申请号：US13684283
申请日：2012-11-23
Inventor： Hee-Jung Yu , Eun-Young Choi , Chan-Ho Yoon , Jung-Bo Son , Il-Gu Lee , Deuk-Su Lyu , Tae-hyun Jeon , Seung-Wook Min , Sok-Kyu Lee , Seung-Chan Bang , Seung-Ku Hwang
Abstract: The present invention relates to an orthogonal frequency division multiplexing wireless local area network (LAN) transmitting/receiving system for providing expanded service coverage, and a method thereof. A first OFDM modulation is performed for an even-numbered time, and a second OFDM modulation is performed for an odd-numbered time. A transmitting frame including a plurality of signal fields according to the first and second OFDM modulation is transmitted. The receiving system determines whether a signal field is repeatedly generated in the frame. If the signal field is not repeatedly generated, corresponding demodulation is performed. If repeatedly performed, the signal field is demodulated by using first bit allocation information and second bit allocation information having a ½ value of the first bit allocation information. A data field is demodulated according to the demodulated signal field.
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公开(公告)号：US10171221B2
公开(公告)日：2019-01-01
申请号：US14952476
申请日：2015-11-25
Inventor： Young Seog Song , Jun Hwan Lee , Juho Park , Eun-Young Choi , Young Jo Ko
IPC: H04L5/00 , H04B17/336 , H04W72/12 , H04B17/24
Abstract: Provided is a method for feeding back a channel quality indicator (CQI) by a terminal. The terminal receives, from a base station, at least one reference signal through at least one of multiple beams of the base station. The terminal measures a signal-to-interference plus noise ratio (SINR) for the at least one reference signal. The terminal determines a first level corresponding to the measured SINR among levels of a first CQI. In addition, the terminal feeds back the first CQI having the first level to the base station.
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Patent Agency Ranking
公开(公告)号：US10090905B2
公开(公告)日：2018-10-02
申请号：US14982618
申请日：2015-12-29
Inventor： Young Seog Song , Jun Hwan Lee , Juho Park , Joonwoo Shin , Eun-Young Choi
Abstract: A method in which a base station transmits pilot signals in a multiple-antenna communication system is provided. The base station includes some of the plurality of pilot signals distinguished by at least one of time domain symbols, subcarriers, and orthogonal codes in a first set to which a first random number is applied. The base station includes the remaining pilot signals, excluding the pilot signals that are included in the first set, in a second set that uses the same resources as used by the first set and to which a second random number different from the first random number is applied. The base station transmits at least one of the pilot signals that belong to the first set and the second set.
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公开(公告)号：US10178672B2
公开(公告)日：2019-01-08
申请号：US15378176
申请日：2016-12-14
Inventor： Eun-Young Choi
Abstract: A base station allocates at least one control channel element (CCE) to a first control channel earlier than allocating to the rest control channels other than the first control channel among a plurality of control channels corresponding to a first beam, when CCEs are allocated to the plurality of control channels corresponding to the first beam. Further, the base station allocates at least one CCE to the first control channel earlier than allocating to the rest control channels other than the first control channel among a plurality of control channels corresponding to a second beam, when CCEs are allocated to the plurality of control channels corresponding to the second beam.
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公开(公告)号：US09661528B2
公开(公告)日：2017-05-23
申请号：US14609586
申请日：2015-01-30
Inventor： Hee-Jung Yu , Taehyun Jeon , Myung-Soon Kim , Eun-Young Choi , Sok-kyu Lee , Deuk-Su Lyu
CPC classification number: H04W28/065 , H04L1/0041 , H04L1/0045 , H04L1/0059 , H04L1/0071 , H04L1/0618 , H04L5/003 , H04L5/0044 , H04L5/0048 , H04L27/2602 , H04L27/2613 , H04W84/12
Abstract: In the present invention, data generated from a source unit are distributed to at least one bandwidth; the data distributed to the respective bandwidths are encoded in order to perform an error correction; the encoded data are distributed to at least one antenna; a subcarrier is allocated to the data distributed to the respective antennas, and an inverse Fourier transform is performed; a short preamble and a first long preamble corresponding to the subcarrier are generated; a signal symbol is generated according to a data transmit mode; and a frame is generated by adding a second long preamble between the signal symbol and a data field for the purpose of estimating a channel of a subcarrier which is not used.
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公开(公告)号：US11665035B2
公开(公告)日：2023-05-30
申请号：US17151094
申请日：2021-01-15
Inventor： Il-Gu Lee , Eun-Young Choi , Sok-Kyu Lee
CPC classification number: H04L27/2601 , H04L5/0048 , H04L27/0012 , H04L27/22 , H04L27/2273 , H04L27/3444 , H04W72/23 , H04W84/12
Abstract: A method for automatically detecting a packet mode in a wireless communication system supporting a multiple transmission mode includes: acquiring at least one of data rate information, packet length information and channel bandwidth information from a transmitted frame; and determining the packet mode on the basis of the phase rotation check result of a symbol transmitted after a signal field signal and at least one of the data rate information, the packet length information and the channel bandwidth information acquired from the transmitted frame.
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公开(公告)号：US10952061B2
公开(公告)日：2021-03-16
申请号：US16702728
申请日：2019-12-04
Inventor： Sung-Hyun Moon , Cheulsoon Kim , Ji Hyung Kim , Minhyun Kim , Junghoon Lee , Eun-Young Choi
Abstract: A transmission method of a base station is provided. The base station generates a first discovery signal block including a first PSS (primary synchronization signal) and a first SSS (secondary synchronization signal). The base station generates a second discovery signal block including a second PSS and a second SSS. Also, the base station transmits the first discovery signal block and the second discovery signal block.
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