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公开(公告)号：US12192751B2
公开(公告)日：2025-01-07
申请号：US17826569
申请日：2022-05-27
Inventor： Soon Gi Park , Jun Sik Kim , Seung Jae Bahng , Jung Sook Bae , Heesoo Lee
Abstract: A method for controlling base stations in a wireless communication system may include: performing a monitoring operation on a first base station forming a first cell in a predetermined communication area; determining whether the first base station needs to be replaced; when the first base station needs to be replaced, controlling a second base station to move in a direction of the first base station and form a second cell; when coverages of the first and second cells overlap fully or partially, decreasing a transmit power of the first base station and increasing a transmit power of the second base station; and in response to identifying that all of one or more communication nodes connected to the first cell are handed over to the second base station, determining that the first base station is successfully replaced with the second base station.
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公开(公告)号：US12089063B2
公开(公告)日：2024-09-10
申请号：US17520165
申请日：2021-11-05
Inventor： Soon Gi Park , Jun Sik Kim , Seung Jae Bahng , Jung Sook Bae , Heesoo Lee
CPC classification number: H04W16/28 , H04B7/18506
Abstract: A beam alignment method performed by a first communication node in a communication system may comprise: identifying a position of a first antenna of the first communication node; configuring a first coordinate system based on a physical position and direction of the first antenna, based on information on the position of the first antenna; identifying a position of a second antenna of a second communication node of the communication system; converting information on the position of the second antenna into coordinate information based on the first coordinate system; calculating direction change values of the first antenna based on the information on the position of the second antenna, which is converted based on the first coordinate system; changing a direction of the first antenna based on the direction change values of the first antenna; and updating a beam alignment state between the first and second antennas.
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3.发明授权公开(公告)号：US09332590B2
公开(公告)日：2016-05-03
申请号：US14620927
申请日：2015-02-12
Inventor： Young Jin Moon , Seung Jae Bahng , Youn Ok Park , Dong Seung Kwon
CPC classification number: H04W88/085 , H04B7/022
Abstract: Disclosed is a base station that performs coordinated communication with a plurality of remote radio heads (RRHs), including: a communication unit receiving source signals from the plurality of remote radio heads; a measurement unit measuring signal intensities and delay times of the respective source signals; a selection unit selecting remote radio heads that will perform the coordinated communication among the plurality of remote radio heads based on the signal intensities and the delay times; and a demodulation unit demodulating source signals received from the selected remote radio heads.
Abstract translation: 公开了一种与多个远程无线电头（RRH）进行协调通信的基站，包括：通信单元，从多个远程无线电头接收源信号; 测量单元，测量各个源信号的信号强度和延迟时间; 选择单元，基于所述信号强度和所述延迟时间来选择将在所述多个远程无线电头中执行协调通信的远程无线电头; 以及解调单元，解调从所选择的远程无线电头接收的源信号。
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Patent Agency Ranking
4.发明授权公开(公告)号：US11089615B2
公开(公告)日：2021-08-10
申请号：US16671210
申请日：2019-11-01
Inventor： Seung Jae Bahng
Abstract: An operation method of a transmitting apparatus in a wireless communication system includes transmitting, to a receiving apparatus, reverse mapping flag information indicating a direction of mapping data symbols to one or more subcarriers included in a resource block allocated to the receiving apparatus; mapping the data symbols to the one or more subcarriers of the resource block based on the reverse mapping flag information; and transmitting the resource block to the receiving apparatus. According to the embodiments of the present disclosure, the amount of subcarrier phase shift noises due to an SFO occurring in proportion to synchronization impairment and subcarrier index can be reduced in a multi-carrier communication system, thereby increasing data retransmission efficiency.
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公开(公告)号：US09866341B2
公开(公告)日：2018-01-09
申请号：US14612770
申请日：2015-02-03
Inventor： Jun Woo Kim , Seung Jae Bahng , Go San Noh , Youn Ok Park
CPC classification number: H04J11/003 , H04B7/10 , H04L5/0051 , H04L25/03343 , H04L27/261 , H04L27/2626
Abstract: Disclosed is a data transmitter, including: a demultiplexer configured to demultiplex a data subcarrier, and a training sequence or a pilot subcarrier included in a signal which needs to be frequency-shifted among a plurality of signals; a frequency shift unit configured to frequency-shift the demultiplexed data subcarrier based on a predetermined frequency; a superposition unit configured to generate a polarization signal by superimposing the demultiplexed training sequence or pilot subcarrier, and the frequency-shifted data subcarrier; and a polarization antenna configured to transmit a signal which need not be frequency-shifted and the generated polarization signal among the plurality of signals.
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公开(公告)号：US12160293B2
公开(公告)日：2024-12-03
申请号：US17575596
申请日：2022-01-13
Inventor： An Seok Lee , Heesoo Lee , Seung Jae Bahng , Jung Sook Bae
IPC: H04B7/06 , H04B7/0413 , H04L5/00 , H04L25/02
Abstract: An operation method of a terminal for initial access in a communication system may comprise: receiving a plurality of SSBs having different indexes through a plurality of antennas included in a base station; calculating a channel capacity using the plurality of SSBs; feeding back, to the base station, index(es) of one or more SSBs for having a maximum channel capacity among the plurality of SSBs; and performing communication with the base station through a combination of two or more antennas that have transmitted the one or more SSBs for having the maximum channel capacity among the plurality of antennas.
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7.发明授权公开(公告)号：US09641230B2
公开(公告)日：2017-05-02
申请号：US14984077
申请日：2015-12-30
Inventor： Ji Soo Park , Jun Woo Kim , Youn Ok Park , Seung Jae Bahng , Yong Su Lee
IPC: H04W72/00 , H04W72/08 , H04W72/04 , H04B7/0408
CPC classification number: H04B7/0408
Abstract: Disclosed is a base station transmitting multiple beams to multiple beam areas, including: a determination unit determining at least any one of whether a downlink control signal is transmitted through the multiple beams transmitted to the multiple beam areas and a transmission section; a generation unit generating signal transmitting control information including at least any one of whether the downlink control signal is transmitted, the transmission section of the downlink control signal, and derivation information to derive a change of an access beam for a terminal that accesses the multiple beams; a communication unit downlink-transmitting the signal transmitting control information to the multiple beam areas or the multiple beams; and a control unit controlling transmission of the downlink control signal based on the signal transmitting control information.
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8.发明授权公开(公告)号：US09231687B2
公开(公告)日：2016-01-05
申请号：US14612840
申请日：2015-02-03
Inventor： Go San Noh , Seung Jae Bahng , Jun Woo Kim , Youn Ok Park
CPC classification number: H04B7/10 , H04L1/0034 , H04L1/20
Abstract: Disclosed is a communication system including a first communication apparatus and a second communication apparatus that communicate with each other through a dual polarization antenna, the system including: a first communication apparatus which calculates a co-polar ratio defined by a ratio of a first channel gain for a first polarization and a second channel gain for a second polarization; and a second communication apparatus which calculates a first rotation angle for the first polarization and a second rotation angle for the second polarization, respectively, by using the co-polar ratio transferred from the first communication apparatus, and transmits to the first communication apparatus a first rotational polarization generated by rotating the first polarization at the first rotation angle and a second rotational polarization generated by rotating the second polarization at the second rotation angle.
Abstract translation: 公开了一种包括通过双极化天线彼此通信的第一通信装置和第二通信装置的通信系统，该系统包括：第一通信装置，其计算由第一信道增益的比率定义的共极比 用于第一偏振和用于第二偏振的第二通道增益; 以及第二通信装置，其通过使用从第一通信装置传送的共极比分别计算用于第一极化的第一旋转角度和第二旋转角度，并且向第一通信装置发送第一极化 通过以第一旋转角度旋转第一偏振而产生的旋转偏振和通过以第二旋转角旋转第二偏振而产生的第二旋转极化。
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