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11.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：US11729715B2
公开(公告)日：2023-08-15
申请号：US17510247
申请日：2021-10-25
Inventor： Jae Seung Lee , Mln Ho Cheong , Hyoung Jin Kwon , Hee Jung Yu , Jae Woo Park , Sok Kyu Lee
CPC classification number: H04W52/0216 , H04L5/0055 , H04W74/002 , H04W84/12 , Y02D30/70
Abstract: A method and an apparatus for allocating a flexible transmission slot in a wireless local area network (LAN) system are disclosed. A flexible transmission slot allocation method of an access point (AP) in a wireless local area network (WLAN) system according to an exemplary embodiment includes transmitting a beacon including a traffic indication map (TIM) bit to a station, receiving a power save poll (PS-Poll) from the station in a slot implicitly allocated by the TIM bit, and transmitting an acknowledgement (ACK) including transmission slot allocation information on downlink data to the station.
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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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公开(公告)号：US10708026B2
公开(公告)日：2020-07-07
申请号：US16042838
申请日：2018-07-23
Inventor： Yu Ro Lee , Jae Woo Park , Jae Seung Lee , Jee Yon Choi , Il Gyu Kim , Seung Chan Bang
IPC: H04L5/00 , H04B17/336 , H04B7/024 , H04L27/26 , H04B7/0452 , H04B7/06
Abstract: Disclosed are a frame transmission method and a communication device performing the same. The communication device may transmit a null data packet (NDP)-announcement (NDP-A) including information on a plurality of communication devices participating in interference alignment and transmit an NDP including a common signal field and a common training field commonly applied to the plurality of communication devices.
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15.发明授权公开(公告)号：US10673754B2
公开(公告)日：2020-06-02
申请号：US16024318
申请日：2018-06-29
Inventor： Jee Yon Choi , Jae Woo Park , Hyoung Jin Kwon , Sok Kyu Lee
IPC: H04W4/00 , H04L12/741 , H04B7/0452 , H04B7/06 , H04W72/04 , H04W88/08
Abstract: Provided is a method of transmitting and receiving a frame for a multi-user multiple-input and multiple-output (MU-MIMO) communication in an access point (AP), the method including transmitting, to each of a plurality of stations (STAs), an uplink multi-user request (UL MU request) frame requesting transmission of a data frame, and receiving, from each of the plurality of STAs, the data frame during an identical period of time based on an identical reception intensity, wherein the UL MU request frame includes at least one of information on a transmission time of the data frame and information on a reception intensity of the data frame in the AP.
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Patent Agency Ranking
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：US20190296807A1
公开(公告)日：2019-09-26
申请号：US16440641
申请日：2019-06-13
Inventor： Yu Ro Lee , Jae Woo Park , Jae Seung Lee , Jee Yon Choi , Il Gyu Kim , Seung Chan Bang
IPC: H04B7/0452 , H04B7/06 , H04L5/00 , H04W72/04
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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公开(公告)号：US10038635B2
公开(公告)日：2018-07-31
申请号：US15247479
申请日：2016-08-25
Inventor： Jee Yon Choi , Jae Woo Park , Hyoung Jin Kwon , Sok Kyu Lee
IPC: H04W4/00 , H04L12/741 , H04B7/0452 , H04B7/06 , H04W72/04 , H04W88/08
CPC classification number: H04L45/74 , H04B7/0452 , H04B7/0617 , H04W72/0413 , H04W88/08
Abstract: Provided is a method of transmitting and receiving a frame for a multi-user multiple-input and multiple-output (MU-MIMO) communication in an access point (AP), the method including transmitting, to each of a plurality of stations (STAs), an uplink multi-user request (UL MU request) frame requesting transmission of a data frame, and receiving, from each of the plurality of STAs, the data frame during an identical period of time based on an identical reception intensity, wherein the UL MU request frame includes at least one of information on a transmission time of the data frame and information on a reception intensity of the data frame in the AP.
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公开(公告)号：US09979528B2
公开(公告)日：2018-05-22
申请号：US14947194
申请日：2015-11-20
Inventor： Jae Woo Park , Il Gyu Kim , Yu Ro Lee , Jae Seung Lee , Jee Yon Choi
CPC classification number: H04L5/0055 , H04W74/008 , H04W74/0816
Abstract: Provided is a data communication method performed at a transmission node, the method including collecting a node list including nodes communicable with the transmission node, exchanging the node list with each of the communicable nodes, determining an allowance of a space recycling transmission to a reception node by determining that the transmission node is a corresponding node as an exposed node in response to an occurrence of a clear-to-send (CTS) timeout, and transmitting data to the reception node based on a result of determining the allowance of the space recycling transmission.
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公开(公告)号：US09634746B2
公开(公告)日：2017-04-25
申请号：US14886474
申请日：2015-10-19
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: H04L27/22 , H04B7/0452 , H04L1/00 , H04L1/08 , H04B7/0413 , H04L27/20 , H04W84/12
CPC classification number: H04B7/0452 , H04B7/0413 , H04L1/0003 , H04L1/0061 , H04L1/0072 , H04L1/0075 , H04L1/0083 , H04L1/08 , H04L27/18 , H04L27/20 , H04L69/22 , 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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