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1.发明授权公开(公告)号：US09270501B2
公开(公告)日：2016-02-23
申请号：US14272973
申请日：2014-05-08
Inventor： Jinhyung Oh , Gwangzeen Ko , Igor Kim , Myung Sun Song , Hyun Ho Lee , Myeong Jin Kim , Young Chai Ko
CPC classification number: H04L25/0391 , H04B7/0417 , H04B7/0452 , H04B7/0626 , H04B7/0632 , H04L25/0202 , H04L25/021 , H04L25/0242 , H04L25/03955
Abstract: Disclosed is a method for removing signal interference in a MIMO-based interference removing apparatus including transmitting a reference signal to at least one receiver; if channel information is estimated by the receiver, receiving the estimated channel information from the receiver as a feedback signal; and producing transmission pre-coding matrix, beam forming matrix, and weighted matrix using the received channel information. Further, the method includes transmitting information containing the transmission pre-coding matrix, the beam forming matrix, and the weighted matrix by including them in a pilot signal to the receiver, and the MIMO-based interference removing apparatus comprises at least one transmitter.
Abstract translation: 公开了一种在基于MIMO的干扰去除装置中消除信号干扰的方法，包括：向至少一个接收机发送参考信号; 如果接收机估计信道信息，则从接收机接收所估计的信道信息作为反馈信号; 并使用所接收的信道信息产生传输预编码矩阵，波束形成矩阵和加权矩阵。 此外，该方法包括通过将包含发送预编码矩阵，波束形成矩阵和加权矩阵的信息包括在导频信号中而发送到接收机，并且基于MIMO的干扰去除装置包括至少一个发射机。
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公开(公告)号：US11510214B2
公开(公告)日：2022-11-22
申请号：US17186245
申请日：2021-02-26
Inventor： Jung Sun Um , Bong-Su Kim , Igor Kim , Seung Keun Park
Abstract: A method of generating shared information includes determining an attenuation effect on transmission power of a new radio station due to a reception mask of an existing radio station, calculating an interference effect of the existing radio station due to the new radio station using the attenuation effect, determining a protection domain of the existing radio station according to the interference effect, and generating shared information to be used by the new radio station based on the protection domain, wherein the protection domain is a domain in which a frequency available to the new radio station is restricted.
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公开(公告)号：US11050506B2
公开(公告)日：2021-06-29
申请号：US16275096
申请日：2019-02-13
Inventor： Jung Sun Um , Igor Kim , Seung Keun Park , Hyeyeon Kwon , Yunbae Kim , Young Hwan Lee
Abstract: An apparatus for analyzing a frequency use status may obtain a candidate radio network temporary identifier (RNTI) using downlink control information (DCI), estimate an active RNTI from the candidate RNTI, and analyze a frequency use status using the active RNTI.
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公开(公告)号：US11160135B2
公开(公告)日：2021-10-26
申请号：US16555942
申请日：2019-08-29
Inventor： Jin Hyung Oh , Gwang Zeen Ko , Hyun Duk Kang , Igor Kim , Myung Sun Song
Abstract: Provided are a frame transmission method performed in an access point (AP), a frame reception method performed in a terminal, and an AP. The frame transmission method performed in an AP includes acquiring a channel for transmitting a first data unit of a first terminal, when a data unit to be transmitted to at least one terminal other than the first terminal is in the AP, generating a physical layer convergence procedure (PLCP) protocol data unit (PPDU) including the first data unit and the data unit to be transmitted to the at least one terminal, and transmitting the PPDU to the first terminal and the at least one terminal. Accordingly, it is possible to improve the performance of a wireless local area network (WLAN).
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公开(公告)号：US09814092B2
公开(公告)日：2017-11-07
申请号：US14577219
申请日：2014-12-19
Inventor： Jin Hyung Oh , Gwang Zeen Ko , Hyun Duk Kang , Igor Kim , Myung Sun Song
CPC classification number: H04W80/02 , H04L1/1861 , H04W28/06 , H04W72/00 , H04W84/12
Abstract: Provided are a frame transmission method performed in an access point (AP), a frame reception method performed in a terminal, and an AP. The frame transmission method performed in an AP includes acquiring a channel for transmitting a first data unit of a first terminal, when a data unit to be transmitted to at least one terminal other than the first terminal is in the AP, generating a physical layer convergence procedure (PLCP) protocol data unit (PPDU) including the first data unit and the data unit to be transmitted to the at least one terminal, and transmitting the PPDU to the first terminal and the at least one terminal. Accordingly, it is possible to improve the performance of a wireless local area network (WLAN).
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Patent Agency Ranking
6.发明申请METOHOD FOR INTERFERENCE ALIGNMENT USING MULTIPLE ANTENNAS IN OVERLAPPED MULTI-CELL OVERLAPPED ENVIRONMENT 有权使用多重天线在多重多层叠加环境中干扰对齐的方法公开(公告)号：US20140205034A1
公开(公告)日：2014-07-24
申请号：US14157116
申请日：2014-01-16
Inventor： Jinhyung Oh , Gwangzeen Ko , Igor Kim , Myung Sun Song
CPC classification number: H04L1/0009 , H04B7/0456 , H04B7/086
Abstract: An interference alignment method using multiple antennas in a multi-cell overlapped environment, includes: when at least one transmission and reception ends having at least one or more antennas communicate with each other, establishing at least one or more channels from the transmission end to the reception end. Further, the interference alignment method includes designing a processing filter for a transmission signal transmitted from the transmission end to the reception ends; and designing a processing filter for a reception signal that is received by the reception end.
Abstract translation: 在多小区重叠环境中使用多个天线的干扰对准方法包括：当至少一个发送和接收结束时具有至少一个或多个天线彼此通信时，建立至少一个或多个信道从发射端至 接待端 此外，干扰对准方法包括设计从发送端发送到接收端的发送信号的处理过滤器; 以及设计用于由接收端接收的接收信号的处理滤波器。
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公开(公告)号：US11696222B2
公开(公告)日：2023-07-04
申请号：US17313984
申请日：2021-05-06
Inventor： Sung Hyun Hwang , Igor Kim , Seung Keun Park
Abstract: A method and a device for searching for an access point in a wireless LAN are disclosed. An operating method of a station comprising a PCR and a WUR comprises the steps of: allowing the WUR operating in a wake up state to receive a WUR beacon frame from an access point; shifting an operating state of the PCR from a sleep state to the wake up state, when the WUR beacon frame is received; and allowing the PCR operating in the wake up state to communicate with the access point. Therefore, the performance of a communication system can be improved.
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公开(公告)号：US11153818B2
公开(公告)日：2021-10-19
申请号：US16341857
申请日：2017-10-12
Inventor： Sung Hyun Hwang , Igor Kim , Seung Keun Park
IPC: H04W52/04 , H04W52/02 , H04L5/00 , H04L12/24 , H04W12/069 , H04W84/12 , H04W88/08 , H04W12/73 , H04W12/76
Abstract: Disclosed are a method and an apparatus for initial negotiation in a wireless LAN. An operating method of a station in a communication system comprises the steps of: generating a probe request frame including WUR capability information of the station which supports a WUR mode; transmitting the probe request frame; and receiving a probe response frame from an access point having received the probe request frame. Therefore, the performance of the communication system can be improved.
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公开(公告)号：US11032758B2
公开(公告)日：2021-06-08
申请号：US16331123
申请日：2017-09-06
Inventor： Sung Hyun Hwang , Igor Kim , Seung Keun Park
Abstract: A method and a device for searching for an access point in a wireless LAN are disclosed. An operating method of a station comprising a PCR and a WUR comprises the steps of: allowing the WUR operating in a wake up state to receive a WUR beacon frame from an access point; shifting an operating state of the PCR from a sleep state to the wake up state, when the WUR beacon frame is received; and allowing the PCR operating in the wake up state to communicate with the access point. Therefore, the performance of a communication system can be improved.
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10.发明授权公开(公告)号：US09642070B2
公开(公告)日：2017-05-02
申请号：US14621523
申请日：2015-02-13
Inventor： Hyun Duk Kang , Gwang Zeen Ko , Jin Hyung Oh , Igor Kim , Myung Sun Song
Abstract: Disclosed are a method for avoiding interference in a wireless local area network system and an apparatus for performing the same. The method for avoiding interference by an access point in a wireless local area network system, includes receiving channel scan results from a station associated with the access point; setting connection with an adjacent access point based on the channel scan results; determining an access point to be associated with the station through negotiation with the adjacent access point; and transmitting a reassociation request message to request reassociation with the adjacent access point to the station when the negotiation with the adjacent access point succeeds.
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