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公开(公告)号：US10230435B2
公开(公告)日：2019-03-12
申请号：US14051355
申请日：2013-10-10
Inventor： Yun-Joo Kim , Jae-Seung Lee , Sok-Kyu Lee
IPC: H04B7/04 , H04B7/0452 , H04L1/06 , H04L1/16 , H04L1/18
Abstract: A method and apparatus of transmitting in a wireless communication system is provided. A transmitter generates a group management frame including a group information and position information and a data frame including a group control information having a group identifier for each of a plurality of groups. The group information indicates whether the receiver is a member of each of the plurality of groups. The position information indicates a position of at least one stream corresponding to at least one group of which the receiver is a member.
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公开(公告)号：USRE49471E1
公开(公告)日：2023-03-21
申请号：US15293258
申请日：2016-10-13
Inventor： Yun-Joo Kim , Jae-Seung Lee , Sok-Kyu Lee
IPC: H04W74/08 , H04B7/0452
Abstract: The present invention relates to a method for protecting MU-MIMO (Multi User-Multiple Input Multiple Output) data through a multi-RTS/CTS frame exchange in a MU-MIMO based wireless communication system. The method of the present invention comprises: a process where an indicator for VHT data protection is added to an RTS frame, using the structure of an RTS/CTS frame for an existing legacy terminal during the multi RTS/CTS frame exchange; a process where an access point designates and then transmits the duration period of the RTS frame while transmitting the RTS frame; and a process where wireless terminals up to the (n−1)th terminal designate the duration period of the CTS frame as ‘0’ and send the designated duration period, while only the n-th wireless terminal designates NAV for data protection.
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公开(公告)号：US11362705B2
公开(公告)日：2022-06-14
申请号：US16244107
申请日：2019-01-10
Inventor： Yun-Joo Kim , Jae-Seung Lee , Sok-Kyu Lee
IPC: H04B7/0452 , H04L1/06 , H04L1/16 , H04L1/18
Abstract: A method and apparatus of transmitting in a wireless communication system is provided. A transmitter generates a group management frame including a group information and position information and a data frame including a group control information having a group identifier for each of a plurality of groups. The group information indicates whether the receiver is a member of each of the plurality of groups. The position information indicates a position of at least one stream corresponding to at least one group of which the receiver is a member.
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Patent Agency Ranking
公开(公告)号：US09445306B2
公开(公告)日：2016-09-13
申请号：US14882712
申请日：2015-10-14
Inventor： Yun-Joo Kim , Sok-Kyu Lee
IPC: H04W4/00 , H04W28/06 , H04W4/06 , H04L12/741 , H04W72/04
CPC classification number: H04W72/005 , H04L45/74 , H04L69/22 , H04W4/06 , H04W28/06 , H04W72/0406
Abstract: A method for simultaneously transmitting packets having different lengths to two or more users in a wireless communication system includes: generating the packets to transmit to the respective users, the packets containing information on the maximum transmission length of the packets having different lengths; and simultaneously transmitting the generated packets to the respective users. The maximum transmission length is represented by the number of symbols, and each of the packets sequentially contains control information required for transmitting the packet, data, a tail field, and a PHY pad field, and is generated by inserting a MAC pad between the control information and the data such that the tail field and the PHY pad field are positioned at the last byte of the last symbol of the maximum transmission length.
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公开(公告)号：US11742905B2
公开(公告)日：2023-08-29
申请号：US17838212
申请日：2022-06-11
Inventor： Yun-Joo Kim , Jae-Seung Lee , Sok-Kyu Lee
IPC: H04B7/0452 , H04L1/06 , H04L1/1607 , H04L1/1829
CPC classification number: H04B7/0452 , H04L1/06 , H04L1/1685 , H04L1/1848
Abstract: A method and apparatus of transmitting in a wireless communication system is provided. A transmitter generates a group management frame including a group information and position information and a data frame including a group control information having a group identifier for each of a plurality of groups. The group information indicates whether the receiver is a member of each of the plurality of groups. The position information indicates a position of at least one stream corresponding to at least one group of which the receiver is a member.
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公开(公告)号：US10826575B2
公开(公告)日：2020-11-03
申请号：US15937590
申请日：2018-03-27
Inventor： Yun-Joo Kim , Jae-Seung Lee , Sok-Kyu Lee
IPC: H04B7/0452 , H04W4/08 , H04W8/18 , H04W84/12
Abstract: The present invention relates to methods for transmitting a frame by grouping a plurality of wireless terminals in a multiuser based wireless communication system. The present invention includes a method for transmitting a frame by including information about multiple receiver terminals in a MAC frame, another method for transmitting a frame by allocating group addresses and then using a corresponding group address for frame transmission, and yet another method for transmitting a frame by using a unique group sequence number that is allocated to each group and group control information that contains bitmap information. The group control information is included in a destination address field of a MAC layer, or in a signal field of a physical layer, or in both the MAC layer and the physical layer.
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公开(公告)号：US09929784B2
公开(公告)日：2018-03-27
申请号：US14633036
申请日：2015-02-26
Inventor： Yun-Joo Kim , Jae-Seung Lee , Sok-Kyu Lee
IPC: H04B7/04 , H04B7/0452 , H04W4/08 , H04W8/18 , H04W84/12
CPC classification number: H04B7/0452 , H04W4/08 , H04W8/186 , H04W84/12
Abstract: The present invention relates to methods for transmitting a frame by grouping a plurality of wireless terminals in a multiuser based wireless communication system. The present invention includes a method for transmitting a frame by including information about multiple receiver terminals in a MAC frame, another method for transmitting a frame by allocating group addresses and then using a corresponding group address for frame transmission, and yet another method for transmitting a frame by using a unique group sequence number that is allocated to each group and group control information that contains bitmap information. The group control information is included in a destination address field of a MAC layer, or in a signal field of a physical layer, or in both the MAC layer and the physical layer.
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公开(公告)号：US09794912B2
公开(公告)日：2017-10-17
申请号：US15237000
申请日：2016-08-15
Inventor： Yun-Joo Kim , Sok-Kyu Lee
CPC classification number: H04W72/005 , H04L45/74 , H04L69/22 , H04W4/06 , H04W28/06 , H04W72/0406
Abstract: A method for simultaneously transmitting packets having different lengths to two or more users in a wireless communication system includes: generating the packets to transmit to the respective users, the packets containing information on the maximum transmission length of the packets having different lengths; and simultaneously transmitting the generated packets to the respective users. The maximum transmission length is represented by the number of symbols, and each of the packets sequentially contains control information required for transmitting the packet, data, a tail field, and a PHY pad field, and is generated by inserting a MAC pad between the control information and the data such that the tail field and the PHY pad field are positioned at the last byte of the last symbol of the maximum transmission length.
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