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公开(公告)号：US09277555B2
公开(公告)日：2016-03-01
申请号：US13652412
申请日：2012-10-15
Inventor： Hee-Jung Yu , Min-Ho Cheong , Sok-Kyu Lee
CPC classification number: H04W72/0453 , H04L1/0026 , H04L1/0061 , H04L1/0643
Abstract: A data transmission apparatus in a communication system includes a verification unit configured to verify a basic frequency band capable of being used for transmitting and receiving data to and from a plurality of terminals, and a multi-bandwidth mode in the basic frequency band; a generation unit configured to generate data packets in the multi-bandwidth mode; and a transmission unit configured to transmit the data packets in the multi-bandwidth mode, wherein the multi-bandwidth mode includes a ½× bandwidth of the basic frequency band, a basic bandwidth, a 2× bandwidth of the basic frequency band, a 4× bandwidth of the basic frequency band and an 8× bandwidth of the basic frequency band.
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公开(公告)号：US09247566B2
公开(公告)日：2016-01-26
申请号：US14102400
申请日：2013-12-10
Inventor： Il-Gu Lee , Sok-Kyu Lee
CPC classification number: H04W74/04 , H04W74/0816 , H04W74/0875
Abstract: A method for guaranteeing a data frame transmit opportunity in a wireless LAN system having three different transmission modes includes: setting a first transmission protection interval based on a lowest transmission mode, when a node of a mode having a lowest transmission rate among the three transmission modes exists in the wireless LAN system, aggregating a data frame to be transmitted within time of the set transmission protection interval, and transmitting the data frame; and setting a second transmission protection interval based on a mode having a highest transmission rate, when only nodes of a mode having a highest transmission rate among the three transmission modes exist, aggregating a data frame to be transmitted within time of the set transmission protection interval, and transmitting the data frame.
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33.发明授权公开(公告)号：US09161316B2
公开(公告)日：2015-10-13
申请号：US14265083
申请日：2014-04-29
Inventor： Il-Gu Lee , Jeeyon Choi , Sok-Kyu Lee
CPC classification number: H04W52/242 , H04W24/08 , H04W52/243 , H04W52/267 , H04W84/12 , Y02D70/00
Abstract: A transmit power control method of a first station in a wireless LAN (WLAN) system includes: receiving path loss information from an (access point) AP, the path loss information containing a maximum value among path losses between the AP and at least one or more stations included in the WLAN system; controlling a transmit power by using the path loss information; and transmitting a frame according to the controlled transmit power. In said controlling the transmit power by using the path loss information, the transmit power is controlled by using a path loss obtained by adding the maximum value and a path loss between the first station and the AP or by using the path loss between the first station and the AP.
Abstract translation: 无线LAN（WLAN）系统中的第一站的发射功率控制方法包括：从（接入点）AP接收路径损耗信息，所述路径损耗信息包含AP与AP之间的路径损耗中的最大值， WLAN系统中包含更多的台站; 通过使用路径损耗信息来控制发射功率; 以及根据受控发射功率发送帧。 在通过使用路径损耗信息来控制发送功率时，通过使用通过将第一站和AP之间的最大值和路径损耗相加而获得的路径损耗或通过使用第一站点之间的路径损耗来获得发送功率 和AP。
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34.发明公开公开(公告)号：US20240137936A1
公开(公告)日：2024-04-25
申请号：US18395456
申请日：2023-12-22
Inventor： Yu-Ro Lee , Jung-Bo Son , Sok-Kyu Lee
CPC classification number: H04W72/20 , H04B7/0452 , H04L1/007 , H04L1/0606 , H04L1/0612 , H04L5/0023 , H04L5/0053 , H04L5/0073 , H04W48/08 , H04L1/0072 , H04W28/06
Abstract: The present invention relates to a method and an apparatus for transmitting control and training symbols to improve transmission efficiency in a multi-user wireless communication system. The method for transmitting the control and training symbols in the multi-user wireless communication system according to one embodiment of the present invention comprises the steps of: determining whether a required transmission rate of each data can be satisfied through channel estimation in each of terminals when different data are simultaneously transmitted to each of the terminals; and transmitting a data frame to each of the terminals, the data frame being composed to discriminate the control and training symbols in each of the terminals using a combination of time, frequency, and code area when the required transmission rate of each data is not satisfied according to the determined result.
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公开(公告)号：US11722187B2
公开(公告)日：2023-08-08
申请号：US17717043
申请日：2022-04-09
Inventor： Jae Woo Park , Jong Ee Oh , Il-Gu Lee , Sok-Kyu Lee , Min Ho Cheong , Jee Yon Choi , Jae Seung Lee , Yun Joo Kim
IPC: H04B7/04 , H04B7/0452 , H04L1/00 , H04L1/08 , H04B7/0413 , H04L27/20 , H04L27/18 , H04L69/22 , H04W84/12 , H04L69/323
CPC classification number: H04B7/0452 , H04B7/0413 , H04L1/0061 , H04L1/0072 , H04L1/0075 , H04L1/0083 , H04L1/08 , H04L27/18 , H04L27/20 , H04L69/22 , H04L1/0003 , H04L69/323 , H04Q2213/13215 , H04W84/12
Abstract: The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal.
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Patent Agency Ranking
公开(公告)号：US10958455B2
公开(公告)日：2021-03-23
申请号：US16383613
申请日：2019-04-14
Inventor： Jeeyon Choi , Sok-Kyu Lee
Abstract: A method and apparatus for transmitting a frame to at least one receiver in a wireless communication system is provided. The apparatus determines at least one data length in accordance with each receiver based on a number of symbol for the frame to be transmitted, determines a maximum data length among the at least one data length, and determines a length of the frame in time domain based on the maximum data length. The apparatus generates the frame in accordance with the length of the frame, the frame including a first signal field and at least one second signal field. The first signal field indicates the length of the frame and each second signal field indicates each data length.
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公开(公告)号：US10601474B2
公开(公告)日：2020-03-24
申请号：US16122858
申请日：2018-09-05
Inventor： Jae Woo Park , Jong Ee Oh , Il-Gu Lee , Sok-Kyu Lee , Min Ho Cheong , Jee Yon Choi , Jae Seung Lee , Yun Joo Kim
IPC: H04L27/20 , H04B7/0452 , H04L1/00 , H04L1/08 , H04B7/0413 , H04L27/18 , H04L29/06 , H04W84/12 , H04L29/08
Abstract: The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal.
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公开(公告)号：US10374668B2
公开(公告)日：2019-08-06
申请号：US15897986
申请日：2018-02-15
Inventor： Jong-Ee Oh , Minho Cheong , Sok-Kyu Lee
IPC: H04L1/00 , H04L1/06 , H04L1/08 , H04L5/00 , H04W28/06 , H04W84/12 , H04B7/0413 , H04B7/0452
Abstract: The present invention relates to a method and apparatus for transmitting and receiving data. A data transmission method from a sender terminal to a receiver terminal in a MIMO system using a variable frequency band according to one embodiment of the present invention comprises: repeatedly generating a signal field depending on a frequency band that is applied to the transmission of a data frame; generating a data field including the data; generating a data frame including the signal field and the data field; and transmitting the data frame to the receiver terminal. The present invention is advantageous in that a signal field which is transmitted together with the data being transmitted from the sender terminal to the receiver terminal in the MIMO system can be sent more efficiently.
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公开(公告)号：US10057095B2
公开(公告)日：2018-08-21
申请号：US15287748
申请日：2016-10-07
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 , H04W72/042 , 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：US09900067B2
公开(公告)日：2018-02-20
申请号：US14147447
申请日：2014-01-03
Inventor： Jong-Ee Oh , Minho Cheong , Sok-Kyu Lee
IPC: H04B7/02 , H04L1/02 , H04B7/0452 , H04L1/00 , H04L1/08 , H04L1/06 , H04L5/00 , H04W28/06 , H04W84/12 , H04B7/0413
CPC classification number: H04B7/0452 , H04B7/0413 , H04L1/0083 , H04L1/0643 , H04L1/08 , H04L5/0007 , H04L5/003 , H04W28/06 , H04W84/12
Abstract: The present invention relates to a method and apparatus for transmitting and receiving data. A data transmission method from a sender terminal to a receiver terminal in a MIMO system using a variable frequency band according to one embodiment of the present invention comprises: repeatedly generating a signal field depending on a frequency band that is applied to the transmission of a data frame; generating a data field including the data; generating a data frame including the signal field and the data field; and transmitting the data frame to the receiver terminal. The present invention is advantageous in that a signal field which is transmitted together with the data being transmitted from the sender terminal to the receiver terminal in the MIMO system can be sent more efficiently.
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