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    CALIBRATION METHOD FOR COOPERATIVE TRANSMISSION OF CELL-FREE WIRELESS NETWORK, AND APPARATUS THEREFOR
    1.
    发明申请
    CALIBRATION METHOD FOR COOPERATIVE TRANSMISSION OF CELL-FREE WIRELESS NETWORK, AND APPARATUS THEREFOR 有权

    公开(公告)号：US20220140920A1

    公开(公告)日：2022-05-05

    申请号：US17511061

    申请日：2021-10-26

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Seung Eun HONG

    IPC: H04B17/13 ,  H04B17/21 ,  H04L25/02 ,  H04L5/14

    Abstract: A method for calibration, in a serial fronthaul in which a calibration device and L (L is a natural number equal to or greater than 1) access node(s) (AN(s)) are serially connected, may include: transmitting, by the calibration device, to at least part of the L AN(s), a calibration command message indicating calibration of transmission paths; determining, by the calibration device and the at least part of the L AN(s), time delay values and phase characteristic values of the transmission paths of the at least part of the L AN(s); and transmitting, by the calibration device, to the at least part of the L AN(s), a calibration adjustment message indicating calibration of the transmission paths based on the time delay values and the phase characteristic values of the transmission paths of the at least part of the L AN(s).

    METHOD AND APPARTUS FOR MODULATING BASEBAND SIGNAL IN BEAM SPACE MULTI-INPUT MULTI-OUTPUT
    2.
    发明申请
    METHOD AND APPARTUS FOR MODULATING BASEBAND SIGNAL IN BEAM SPACE MULTI-INPUT MULTI-OUTPUT 有权
    波束空间多输入多输出调制基带信号的方法与应用

    公开(公告)号：US20160072561A1

    公开(公告)日：2016-03-10

    申请号：US14844783

    申请日：2015-09-03

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Duk Hyun YOU ,  Seung Eun HONG

    IPC: H04B7/04 ,  H04L25/03

    CPC classification number: H04B7/0413 ,  H04B7/0617

    Abstract: A method and apparatus for modulating a baseband signal in beam space MIMO are provided. The baseband signal modulation apparatus may calculate a load value of a plurality of antenna elements using a baseband signal. The baseband signal modulation apparatus may change a phase or a magnitude of a baseband signal or a first band signal having a higher frequency than that of the baseband signal to correspond to the calculated load value.

    Abstract translation: 提供了一种用于调制波束空间MIMO中的基带信号的方法和装置。 基带信号调制装置可以使用基带信号来计算多个天线元件的负载值。 基带信号调制装置可以改变具有比基带信号的频率高的基带信号或第一频带信号的相位或幅度，以对应于所计算的负载值。

    METHOD OF DETERMINING POSITION OF TERMINAL IN COMMUNICATION SYSTEM USING MULTIPLE BEAMS
    6.
    发明申请
    METHOD OF DETERMINING POSITION OF TERMINAL IN COMMUNICATION SYSTEM USING MULTIPLE BEAMS 审中-公开
    使用多个字段确定通信系统中终端位置的方法

    公开(公告)号：US20140162704A1

    公开(公告)日：2014-06-12

    申请号：US14098768

    申请日：2013-12-06

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Eun Young CHOI ,  Moon Sik LEE ,  Young Seog SONG ,  Jun Hwan LEE ,  Seung Eun HONG

    IPC: H04W4/02

    CPC classification number: H04W64/00 ,  G01S1/08

    Abstract: A method of determining a position of a terminal in a communication system using multiple beams is provided. The method includes receiving a first beam from a first point, receiving a second beam from a second point, and determining a position of the terminal by use of information about the first beam and information about the second beam, so that in a case in which two or more effective beams are received in a system using multiple beams, the position of the terminal is determined by use of the angle of a beam, and information about coordinates of departure of a beam and/or coordinates of final arrival of a beam without using a positioning device, such as GPS.

    Abstract translation: 提供了一种使用多个光束确定通信系统中终端的位置的方法。 该方法包括从第一点接收第一光束，从第二点接收第二光束，以及通过使用关于第一光束的信息和关于第二光束的信息来确定终端的位置，使得在其中 在使用多个光束的系统中接收两个或更多个有效光束，通过使用光束的角度确定终端的位置，以及关于光束的离开坐标和/或光束的最终到达的坐标的信息，而没有 使用定位设备，如GPS。

    ANTENNA APPARATUS AND METHOD FOR HANDOVER USING THE SAME
    7.
    发明申请
    ANTENNA APPARATUS AND METHOD FOR HANDOVER USING THE SAME 有权
    天线装置和使用该方法进行切换的方法

    公开(公告)号：US20140162655A1

    公开(公告)日：2014-06-12

    申请号：US14104377

    申请日：2013-12-12

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Seung Eun HONG ,  Moon Sik LEE ,  Young Seog SONG ,  Jun Hwan LEE ,  Eun Young CHOI ,  Il Gyu KIM ,  Seung Chan BANG

    IPC: H04W36/00 ,  H01Q21/06

    CPC classification number: H01Q21/061 ,  H01Q1/246 ,  H01Q21/065 ,  H01Q21/205 ,  H01Q21/22 ,  H01Q21/26 ,  H04B7/0617 ,  H04W16/28 ,  H04W36/0072

    Abstract: There are provided an antenna apparatus and a method of handover using the antenna apparatus. The antenna apparatus may comprise a plurality of antenna elements forming a plurality of beams in a predetermined service area. The plurality of antenna elements are arranged in a plurality of rows, and a number of antenna elements included in an uppermost row of the plurality of rows is smaller than a number of antenna elements included in a downmost row of the plurality of rows, and differences between center angles of beams formed by the antenna elements included in the downmost row are larger than differences between center angles of beams formed by the antenna elements included in the uppermost row.

    Abstract translation: 提供了使用天线装置的天线装置和切换方法。 天线装置可以包括在预定的服务区域中形成多个波束的多个天线元件。 多个天线元件被布置成多行，并且包括在多行的最上行中的多个天线元件小于多行中的最下行中包括的天线元件的数量，并且差异 包括在最下排中的天线元件形成的光束的中心角之间的差大于由最上面的行中包括的天线元件形成的光束的中心角之间的差。

    SPATIAL MULTIPLEXING COMMUNICATION SYSTEM AND METHOD
    8.
    发明申请
    SPATIAL MULTIPLEXING COMMUNICATION SYSTEM AND METHOD 审中-公开
    空间多路复用通信系统及方法

    公开(公告)号：US20130223554A1

    公开(公告)日：2013-08-29

    申请号：US13778200

    申请日：2013-02-27

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Seung Eun HONG ,  Jin Kyeong KIM ,  Hyun Kyu CHUNG

    IPC: H04B7/04

    CPC classification number: H04B7/0413 ,  H04B7/0617 ,  H04B7/063 ,  H04B7/0691 ,  H04B7/086

    Abstract: Provided is a communication system for transmitting data using a plurality of interference-free communication channels. A transmission apparatus may inactivate a portion from among a plurality of transmit antennas and thereby group transmit antennas into a plurality of antenna groups. A channel formed between each antenna group and a reception apparatus may have a relatively low correlation and thus, the may be assumed to be independent. Accordingly, the transmission apparatus and the reception apparatus may transmit data using separate interference-free communication channels.

    Abstract translation: 提供了一种用于使用多个无干扰通信信道发送数据的通信系统。 发送装置可以使多个发送天线中的一部分失活，从而将发送天线分组成多个天线组。 在每个天线组和接收装置之间形成的信道可以具有相对低的相关性，并且因此可以假定为独立的。 因此，发送装置和接收装置可以使用分离的无干扰通信信道来发送数据。

    COMMUNICATION SYSTEM FOR DETERMINING DATA TRANSMITTING SCHEME ACCORDING TO CHANNEL STATE
    9.
    发明申请
    COMMUNICATION SYSTEM FOR DETERMINING DATA TRANSMITTING SCHEME ACCORDING TO CHANNEL STATE 有权
    用于根据通道状态确定数据传输方案的通信系统

    公开(公告)号：US20130165050A1

    公开(公告)日：2013-06-27

    申请号：US13723752

    申请日：2012-12-21

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Kyeong Pyo KIM ,  Seung Eun HONG ,  Jin Kyung KIM

    IPC: H04W16/28

    CPC classification number: H04W16/28 ,  H04B7/0408 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0689

    Abstract: Disclosed is a data transmission method that may enhance a channel capacity in a wireless channel environment of a frequency band having a high directivity in which a transmission apparatus may form a transmission beam and transmit a training signal while sequentially changing a direction of the formed transmission beam, a reception apparatus may form a reception beam and receive the training signal while sequentially changing a direction of the formed reception beam, and the transmission apparatus may receive a response signal from the reception apparatus with respect to the training signal and determine to a data transmission scheme based on the received response signal.

    Abstract translation: 公开了一种数据传输方法，其可以增强具有高方向性的频带的无线信道环境中的信道容量，其中发送装置可以形成发送波束并发送训练信号，同时顺序地改变形成的发送波束的方向 接收装置可以形成接收波束并在顺序改变形成的接收波束的方向的同时接收训练信号，并且发送装置可以从训练信号接收来自接收装置的响应信号，并且确定数据传输 基于接收到的响应信号的方案。

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