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公开(公告)号：US09906277B2
公开(公告)日：2018-02-27
申请号：US15462370
申请日：2017-03-17
发明人： Jee Yon Choi , Jae Woo Park , Yu Ro Lee , Jae Seung Lee , Il Gyu Kim , Seung Chan Bang
IPC分类号： H04B7/024 , H04B7/0408 , H04B7/0456
CPC分类号： H04B7/024 , H04B7/0408 , H04B7/0456 , H04W74/0816
摘要： Disclosed is a protocol for transmitting data through cooperation between access points in an overlapped basic service set (OBSS) environment. A cooperative beamforming communication method may include negotiating, by a first access point, a cooperative transmit beamforming with a second access point having an OBSS area with the first access point; transmitting, by the first access point, a clear-to-send (CTS) to the second access point; and performing, by the first access point, the cooperative transmit beamforming with the second access point during a cooperative transmit beamforming duration determined through the negotiation after a predetermined time interval is elapsed, when transmission of the CTS is completed.
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公开(公告)号：US09781559B2
公开(公告)日：2017-10-03
申请号：US14805092
申请日：2015-07-21
发明人： Young-Hoon Kim , Seon-Ae Kim , Soo Chang Kim , Byung-Jae Kwak , Seung Chan Bang
摘要： A method for a communication link establishing device to establish a communication link in a targeted communication system is provided. A source terminal transmits a source terminal's identification information and threshold value information for selecting a relative angle measurement target to neighboring terminals including a target terminal, and transmits a relative angle measurement request signal to the target terminal and the neighboring terminals. Upon receipt of a response signal for the relative angle measurement request signal from at least one of the neighboring terminals including the target terminal, a communication link with the selected communication target's terminal is established based on the information contained in the response signal.
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公开(公告)号：US09602174B2
公开(公告)日：2017-03-21
申请号：US14681425
申请日：2015-04-08
发明人： Jee Yon Choi , Jae Woo Park , Yu Ro Lee , Jae Seung Lee , Il Gyu Kim , Seung Chan Bang
CPC分类号： H04B7/024 , H04B7/0408 , H04B7/0456 , H04W74/0816
摘要： A method for cooperative beamforming communication, is described including negotiating, at a first access point, a cooperative transmit beamforming with a second access point having an overlapped basic service set (OBSS) area with the first access point, and transmitting, from the first access point, a clear-to-send (CTS) signal to the second access point. The method, upon detecting at the first access point a completion of transmission of the CTS signal, performs at the first access point the cooperative transmit beamforming with the second access point during a time duration of the cooperative transmit beamforming and after a predetermined time interval has elapsed.
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24.发明授权Apparatus and method for spatial filtering by estimating angle of deviation for line of sight of user 有权通过估计用户视线的偏差角来进行空间滤波的装置和方法公开(公告)号：US09413441B2
公开(公告)日：2016-08-09
申请号：US14865260
申请日：2015-09-25
发明人： Seon-Ae Kim , Young-Hoon Kim , Byung-Jae Kwak , Soo Chang Kim , Seung Chan Bang , Moon-Sik Lee
CPC分类号： H04B7/0456 , H04B7/0617 , H04W72/046
摘要： An apparatus for spatial filtering receives a signal transmitted from a first terminal and detects a synchronization start point in time from a transmission frame included in the signal. The apparatus for spatial filtering demodulates a user-defined sequence included in the transmission frame and the at least one SRJBF sequence when the synchronization start point in time is detected, and then estimates a relative angle based on the demodulated user-defined sequence and SRJBF sequence.
摘要翻译： 用于空间滤波的装置接收从第一终端发送的信号，并且从包括在信号中的发送帧检测到时间上的同步起始点。 当检测到同步起始时间点时，用于空间滤波的装置解调包括在传输帧中的用户定义序列和至少一个SRJBF序列，然后基于解调的用户定义序列和SRJBF序列来估计相对角度 。
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25.发明授权Method and apparatus for detecting collision in wireless multi-access channel 有权用于检测无线多址通道中的碰撞的方法和装置公开(公告)号：US09264175B2
公开(公告)日：2016-02-16
申请号：US14180569
申请日：2014-02-14
CPC分类号： H04L1/00 , H04L1/1607 , H04L1/201 , H04W74/00
摘要： A method and an apparatus for detecting a collision in a wireless multi-access channel are disclosed. The method of detecting the collision in the wireless multi-access according to an exemplary embodiment includes generating a request-to-send (RTS) message by a transmission terminal, transmitting the RTS message to a reception terminal, and receiving a response message from the reception terminal and determining whether a collision occurs based on a number of pieces of tone information included in the response message.
摘要翻译： 公开了一种用于检测无线多址信道中的冲突的方法和装置。 根据示例性实施例的检测无线多址中的冲突的方法包括：生成发送终端的请求发送（RTS）消息，向接收终端发送RTS消息，以及从所述接收终端接收响应消息 接收终端，基于响应消息中包含的多个音调信息来确定是否发生冲突。
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公开(公告)号：US09078176B2
公开(公告)日：2015-07-07
申请号：US13631486
申请日：2012-09-28
发明人： Pyeong Jung Song , Hyun Seo Park , Seung Chan Bang
CPC分类号： H04W36/0055 , H04W4/046 , H04W28/06 , H04W72/00 , H04W84/005 , H04W84/045
摘要： Provided is a system and method for configuring a multi-hierarchical cell in which a large-scale mobile backhaul technology and a small cell technology are combined. A mobile backhaul may increase a transmission capacity of a wireless backhaul using a super high frequency (SHF)/extremely high frequency (EHF) band, rather than a cellular band having a limitation in extending frequency resources, and a small group cell to be formed at a final end of the mobile backhaul may be configured by fixed group cells or mobile group cells depending on a radio environment, using a moving relay, wireless fidelity (WiFi), femto-cells, and the like, whereby cells may be miniaturized effectively, and a relatively great capacity of a wireless system may be provided to a subscriber.
摘要翻译： 提供了一种用于配置其中组合大规模移动回程技术和小型小区技术的多层小区的系统和方法。 移动回程可以增加使用超高频（SHF）/极高频（EHF）频带的无线回程的传输容量，而不是扩展频率资源的限制的蜂窝频带以及要形成的小组小区 在移动回程的最终端可以由固定组小区或移动组小区根据无线电环境，使用移动中继，无线保真（WiFi），毫微微小区等来配置，从而可以有效地小区化 ，并且可以向订户提供无线系统的相对较大的容量。
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公开(公告)号：US12041512B2
公开(公告)日：2024-07-16
申请号：US17563272
申请日：2021-12-28
发明人： Keun Young Kim , Seung Chan Bang , Young-Jo Ko , Kapseok Chang , Il Gyu Kim
CPC分类号： H04W4/029 , G01S5/0264 , G01S5/0273 , G06V20/50
摘要： 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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28.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
发明人： Yu Ro Lee , Jae Woo Park , Jae Seung Lee , Jee Yon Choi , Il Gyu Kim , Seung Chan Bang
IPC分类号： 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分类号： 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
摘要： 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：US11743863B2
公开(公告)日：2023-08-29
申请号：US17838177
申请日：2022-06-11
发明人： Jae Heung Kim , Jung Im Kim , Kyoung Seok Lee , Soo Jung Jung , Seung Chan Bang , Byung Han Ryu
CPC分类号： H04W68/025 , H04L5/0053 , H04W68/02 , H04W72/23
摘要： Provided is a method for transmitting paging information in a cellular system. An object of the method is transmitting paging information which can improve applicability of a limited radio resource by variably and flexibly setting up and mapping a transport channel and a physical channel in order to transmit information notifying start of downlink information from a base station to a terminal in a cellular system for packet transmission. The method includes the steps of: forming a paging channel (PCH) in a transport channel corresponding to generation of paging information; setting a paging indication channel (PICH) based on the paging information and forming the paging indication channel in a radio resource of a physical layer; and allocating the paging channel to the radio resource of the physical layer.
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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
发明人： Yu Ro Lee , Jae Woo Park , Jae Seung Lee , Jee Yon Choi , Il Gyu Kim , Seung Chan Bang
IPC分类号： H04L5/00 , H04B17/336 , H04B7/024 , H04L27/26 , H04B7/0452 , H04B7/06
摘要： 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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