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公开(公告)号：US09806778B2
公开(公告)日：2017-10-31
申请号：US14937960
申请日：2015-11-11
Inventor： Seok Ho Won , Seyoung Cho , Suchang Chae , Il Gyu Kim , Seung Chan Bang
IPC: H04L27/00 , H01Q3/00 , H04B7/04 , H04B7/0417 , H04B7/06
CPC classification number: H04B7/046 , H04B7/0417 , H04B7/0669
Abstract: A transmitter generates a first precoding vector for a first virtual antenna port among a plurality of virtual antenna ports using a first sequence having a constant magnitude and a discrete Fourier transform (DFT) vector sequence in a time domain and a frequency domain. The transmitter generates a plurality of second precoding vectors for the remaining virtual antenna port, except for the first virtual antenna port of the plurality of virtual antenna ports by circular shifting the first precoding vector. The transmitter maps a plurality of first data streams for the plurality of virtual antenna ports to a plurality of physical antenna ports using the first precoding vector and the plurality of second precoding vectors.
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公开(公告)号：US09730238B2
公开(公告)日：2017-08-08
申请号：US14734733
申请日：2015-06-09
Inventor： Jee Yon Choi , Jae Woo Park , Yu Ro Lee , Jae Seung Lee , Il Gyu Kim , Seung Chan Bang
Abstract: Provided is a data frame transmission method of a communication apparatus, the method including determining whether a transmission allowance condition of a data frame of the communication apparatus is satisfied when another communication apparatus occupies a channel, verifying an end time of another data frame transmitted by the other communication apparatus based on a result of the determining, and transmitting the data frame based on the verified end time.
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33.发明授权Method of receiving downlink data, and machine type communication device using the method 有权接收下行数据的方法，以及采用该方法的机型通信装置公开(公告)号：US09001946B2
公开(公告)日：2015-04-07
申请号：US13904604
申请日：2013-05-29
Inventor： Jun Hwan Lee , Hee Sang Chung , Il Gyu Kim , Seung Chan Bang
CPC classification number: H04B7/0808 , H04B17/318 , H04W4/70
Abstract: Provided are a method of receiving downlink data and a machine type communication (MTC) device using the same. The MTC device according to the present invention which has a plurality of antennas includes a reception signal processing module that receives a downlink reference signal for each antenna from a base station, estimates reception signal quality with respect to the downlink reference signal for each antenna, and selects the antenna to receive a downlink signal in accordance with the reception signal quality with respect to each antenna.
Abstract translation: 提供一种接收下行链路数据的方法和使用其的机器类型通信（MTC）设备。 根据本发明的具有多个天线的MTC设备包括接收信号处理模块，其从基站接收每个天线的下行链路参考信号，针对每个天线估计相对于下行链路参考信号的接收信号质量，以及 根据每个天线的接收信号质量选择天线接收下行链路信号。
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公开(公告)号：US12192948B2
公开(公告)日：2025-01-07
申请号：US17524824
申请日：2021-11-12
Inventor： Kap Seok Chang , Seung Chan Bang , Young Jo Ko , Il Gyu Kim
IPC: H04W64/00
Abstract: A beam fingerprint-based positioning method, performed by a communication node located in a target space, may include: performing measurements on positioning signals transmitted from at least one reference node through a plurality of directional beams in a beam sweeping scheme; transmitting a result of the measurements to a central node; and receiving information on a position of the communication node from the central node.
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公开(公告)号：US12191942B2
公开(公告)日：2025-01-07
申请号：US18393409
申请日：2023-12-21
Inventor： Yu Ro Lee , Jae Woo Park , Jae Seung Lee , Jee Yon Choi , Il Gyu Kim , Seung Chan Bang
IPC: H04L5/00 , H04B7/0452 , H04B7/06 , H04L27/26 , H04W72/0453 , H04W84/12
Abstract: A wireless communication method and apparatus in a wireless local area network (WLAN) system are disclosed. A wireless communication method according to one embodiment may include generating a high-efficiency Wi-Fi (HEW) frame including at least one of an HEW-SIG-A field and an HEW-SIG-B field which include channel information for communications according to an Orthogonal Frequency-Division Multiple Access (OFDMA) mode, and transmitting the generated HEW frame to a reception apparatus.
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Patent Agency Ranking
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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37.发明授权公开(公告)号：US11991675B2
公开(公告)日：2024-05-21
申请号：US17093836
申请日：2020-11-10
Inventor： Yu Ro Lee , Jae Woo Park , Jae Seung Lee , Jee Yon Choi , Il Gyu Kim , Seung Chan Bang
IPC: H04B7/0417 , H04B7/0452 , H04B7/06 , H04W16/28 , H04W24/10 , H04W28/02 , H04W48/16 , H04W72/0453 , H04W72/21 , H04W72/23 , H04W72/542 , H04W84/12 , H04W88/02 , H04W88/08 , H04W92/02 , H04W92/10
CPC classification number: H04W72/0453 , H04B7/0417 , H04B7/0452 , H04B7/0617 , H04B7/0626 , H04W16/28 , H04W24/10 , H04W28/0247 , H04W48/16 , H04W72/21 , H04W72/23 , H04W72/542 , H04W84/12 , H04W88/02 , H04W88/08 , H04W92/02 , H04W92/10
Abstract: Disclosed are a frame transmission method using a selective beamforming and a communication apparatus to perform the frame transmission method. The communication apparatus may determine a beamforming matrix based on classification information in which a plurality of subcarriers used for communication is classified into a plurality of frequency units, may map a long training field (LTF) sequence to the beamforming matrix, and transmit a beamforming training (BF-T) frame including the mapped LTF sequence to a plurality of stations, may receive, from the plurality of stations having receiving the BF-T frame, feedback information generated based on a reception strength of the BF-T frame, and may allocate frequency units to data frames to be transmitted to the plurality of stations based on the feedback information, and transmit the data frames using the allocated frequency units. The reception strength of the BF-T frame may be determined at each station for each frequency unit.
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公开(公告)号：US11812479B2
公开(公告)日：2023-11-07
申请号：US17517769
申请日：2021-11-03
Inventor： Ji Soo Park , Il Gyu Kim , Hee Sang Chung , Yong Seouk Choi , Jun Hyeong Kim , Go San Noh
CPC classification number: H04W74/0841 , H04W74/006 , H04W74/0866
Abstract: An operation method of a terminal in a communication system may include: receiving, from a base station, primary RA configuration information for a primary RA procedure; receiving, from the base station, secondary RA configuration information for a secondary RA procedure; transmitting a primary RA preamble to the base station by using a primary RA resource indicated by the primary RA configuration information; receiving, from the base station, secondary RA indication information in response to the primary RA preamble, the secondary RA indication information indicating to perform the secondary RA procedure instead of the primary RA procedure; and transmitting a secondary RA preamble to the base station by using a secondary RA resource indicated by the secondary RA configuration information.
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39.发明授权公开(公告)号：US11368201B2
公开(公告)日：2022-06-21
申请号：US16579924
申请日：2019-09-24
Inventor： Go San Noh , Il Gyu Kim , Jun Hyeong Kim , Ju Ho Park , Jung Hoon Lee , Jun Hwan Lee , Hee Sang Chung
Abstract: A method for sidelink groupcast transmission, performed by a transmitting terminal, may comprise configuring a first feedback resource located at a first time point and a second feedback resource located at a later time point than the first time point; transmitting groupcast control information and groupcast data to a receiving terminal group; receiving first feedback information through the first feedback resource from at least one terminal belonging to a first subgroup of the receiving terminal group; and receiving second feedback information through the second feedback resource from at least one terminal belonging to a second subgroup of the receiving terminal group.
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公开(公告)号：US11197282B2
公开(公告)日：2021-12-07
申请号：US16538915
申请日：2019-08-13
Inventor： Jun Hyeong Kim , Il Gyu Kim , Go San Noh , Ju Ho Park , Jung Hoon Lee , Jun Hwan Lee , Hee Sang Chung
IPC: H04W72/04
Abstract: A sidelink communication method performed by a UE in a communication system may comprise receiving, from a base station, a message including configuration information of a subchannel which is a sensing unit of a resource pool; determining a size of the subchannel based on the configuration information; and performing a sensing operation in units of the subchannel in the resource pool. Therefore, the sidelink communication can be efficiently performed, and the performance of the communication system can be improved.
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