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    METHOD AND APPARATUS FOR OPTIMIZING A LIMITED FEEDBACK IN A WIRELESS ACCESS SYSTEM SUPPORTING A DISTRIBUTED ANTENNA (DA) TECHNIQUE
    2.
    发明申请
    METHOD AND APPARATUS FOR OPTIMIZING A LIMITED FEEDBACK IN A WIRELESS ACCESS SYSTEM SUPPORTING A DISTRIBUTED ANTENNA (DA) TECHNIQUE 有权
    在支持分布式天线（DA）技术的无线接入系统中优化有限反馈的方法和装置

    公开(公告)号：US20150009929A1

    公开(公告)日：2015-01-08

    申请号：US14377287

    申请日：2013-02-21

    Applicant: LG ELECTRONICS INC. ,  Korea University Research & Business Foundation

    Inventor： Eunsung Park ,  Inkyu Lee ,  Wookbong Lee ,  Jinsam Kwak

    IPC: H04W64/00 ,  H04W24/08 ,  H04W72/04

    CPC classification number: H04W64/006 ,  H04B7/024 ,  H04B7/0658 ,  H04L1/0013 ,  H04L1/0057 ,  H04L1/0088 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0055 ,  H04L5/0057 ,  H04L5/0091 ,  H04L27/2633 ,  H04L27/2636 ,  H04W24/08 ,  H04W72/042

    Abstract: The present invention relates to a wireless access system, and more particularly, to a method and apparatus for optimizing a limited feedback in a distributed antenna systems (DSAs). In one aspect of the present invention, a method for optimizing a limited feedback in a wireless access system supporting a distributed antenna (DA) technique, the method comprises steps of receiving, a user equipment (UE) from a DA port, information related to a transmission power of the DA port; receiving a downlink signal from the DA port; measuring a distance between the UE and the DA port by using the downlink signal from the DA port; calculating a number of feedback bits based on the information of the transmission power and the distance between the UE and the DA port; and transmitting feedback information using the calculated number of feedback bits.

    Abstract translation: 本发明涉及一种无线接入系统，更具体地说，涉及用于优化分布式天线系统（DSA）中有限反馈的方法和装置。 在本发明的一个方面，一种用于优化支持分布式天线（DA）技术的无线接入系统中的有限反馈的方法，所述方法包括以下步骤：从DA端口接收用户设备（UE），与 DA端口的传输功率; 从DA端口接收下行链路信号; 通过使用来自DA端口的下行链路信号来测量UE与DA端口之间的距离; 基于发送功率的信息和UE与DA端口之间的距离来计算反馈比特数; 以及使用所计算的反馈比特数发送反馈信息。

    Method for transmitting signal through energy efficiency optimization and base station
    4.
    发明授权
    Method for transmitting signal through energy efficiency optimization and base station 有权

    公开(公告)号：US10231249B2

    公开(公告)日：2019-03-12

    申请号：US15314437

    申请日：2015-04-30

    Applicant: LG ELECTRONICS INC. ,  KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

    Inventor： Jiwon Kang ,  Inkyu Lee ,  Sangrim Lee

    IPC: H04L27/00 ,  H04W72/08 ,  H04B7/06 ,  H04B7/0456 ,  H04L5/00

    Abstract: Disclosed is a signal transmission method. The signal transmission method includes the steps of: setting a default value for generating a beamforming vector to be used for precoding; performing a calculation process of an outer layer for determining whether an accuracy of an energy efficiency satisfies a first threshold value range during a dual layer calculation process for maximizing an energy efficiency of a base station; performing a calculation process of an inner layer for calculating a predetermined second threshold value on which deterministic equivalence of a channel gain matrix coverage; generating a beamforming vector on the basis of values used in the calculation process of the outer layer and the calculation process of the inner layer, when the accuracy of the energy efficiency satisfies the first threshold value range in the calculation process of the outer layer; generating a transmission signal using the beamforming vector; and transmitting the generated transmission signal.

    Method and apapratus for transmitting a frame in a wireless LAN system
    5.
    发明授权
    Method and apapratus for transmitting a frame in a wireless LAN system 有权
    用于在无线LAN系统中发送帧的方法和apapratus

    公开(公告)号：US09306785B2

    公开(公告)日：2016-04-05

    申请号：US14352633

    申请日：2012-10-16

    Applicant: LG ELECTRONICS INC. ,  KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

    Inventor： Ill Soo Sohn ,  Han Bae Kong ,  Hae Wook Park ,  Inkyu Lee ,  Chang Ick Song

    IPC: H04Q9/00 ,  H04L27/26 ,  H04B7/04 ,  H04B7/06 ,  H04W84/12

    CPC classification number: H04L27/2626 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0619 ,  H04W84/12

    Abstract: The present invention relates to a method and apparatus for transmitting a frame in a wireless LAN system. An access point (AP) receives a single orthogonal frequency division multiplexing (OFDM) symbol from each of a plurality of stations (STA) and a single-tone request to send (sRTS) frame through a single subcarrier, selects STAs for performing uplink (UL) multiuser (MU)-multiple input multiple output (MIMO) transmission, and transmits to the plurality of STAs a single-tone clear to send (sCTS) frame allocated to the same subcarrier as a subcarrier to which the sRTS frames received from the selected STAs are allocated.

    Abstract translation: 本发明涉及一种用于在无线LAN系统中发送帧的方法和装置。 接入点（AP）从多个站（STA）中的每一个接收单个正交频分复用（OFDM）符号和通过单个子载波发送（sRTS）帧的单音请求，选择用于执行上行链路的STA（ UL）多用户（MU）多输入多输出（MIMO）传输，并且向多个STA发送分配给与从sRTS帧接收的sRTS帧相同的子载波的单音清除发送（sCTS）帧 所选择的STA被分配。

    METHOD AND APAPRATUS FOR TRANSMITTING A FRAME IN A WIRELESS LAN SYSTEM
    6.
    发明申请
    METHOD AND APAPRATUS FOR TRANSMITTING A FRAME IN A WIRELESS LAN SYSTEM 有权
    用于在无线LAN系统中发送帧的方法和APAPRATUS

    公开(公告)号：US20140301383A1

    公开(公告)日：2014-10-09

    申请号：US14352633

    申请日：2012-10-16

    Applicant: LG ELECTRONICS INC. ,  KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

    Inventor： Ill Soo Sohn ,  Han Bae Kong ,  Hae Wook Park ,  Inkyu Lee ,  Chang Ick Song

    IPC: H04L27/26

    CPC classification number: H04L27/2626 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0617 ,  H04B7/0619 ,  H04W84/12

    Abstract: The present invention relates to a method and apparatus for transmitting a frame in a wireless LAN system. An access point (AP) receives a single orthogonal frequency division multiplexing (OFDM) symbol from each of a plurality of stations (STA) and a single-tone request to send (sRTS) frame through a single subcarrier, selects STAs for performing uplink (UL) multiuser (MU)-multiple input multiple output (MIMO) transmission, and transmits to the plurality of STAs a single-tone clear to send (sCTS) frame allocated to the same subcarrier as a subcarrier to which the sRTS frames received from the selected STAs are allocated.

    Abstract translation: 本发明涉及一种用于在无线LAN系统中发送帧的方法和装置。 接入点（AP）从多个站（STA）中的每一个接收单个正交频分复用（OFDM）符号和通过单个子载波发送（sRTS）帧的单音请求，选择用于执行上行链路的STA（ UL）多用户（MU）多输入多输出（MIMO）传输，并且向多个STA发送分配给与从sRTS帧接收的sRTS帧相同的子载波的单音清除发送（sCTS）帧 所选择的STA被分配。

    METHOD AND DEVICE FOR PROCESSING UPLINK SIGNAL IN WLAN SYSTEM
    7.
    发明申请
    METHOD AND DEVICE FOR PROCESSING UPLINK SIGNAL IN WLAN SYSTEM 有权
    在WLAN系统中处理上行信号的方法和装置

    公开(公告)号：US20140247824A1

    公开(公告)日：2014-09-04

    申请号：US14351134

    申请日：2012-10-11

    Applicant: LG ELECTRONICS INC. ,  Korea University Research and Business Foundation

    Inventor： Ill Soo Sohn ,  Han Bae Kong ,  Chang Ick Song ,  Hae Wook Park ,  Yong Ho Seok ,  Inkyu Lee

    IPC: H04L27/26

    CPC classification number: H04L27/2601 ,  H04B7/0452 ,  H04W8/186 ,  H04W74/002

    Abstract: Provided are a method and device for processing an uplink (UL) signal in a WLAN system. An access point (AP) receives a request to send (RTS) frame from one station (STA) among a plurality of STAs, transmits a group identifier (ID) of a group to which STAs for performing UL multi user multiple-input multiple-output (MU-MIMO) transmission together with the one STA, among group IDs of a group to which the one STA belongs, and receives UL signals from the STAs which perform the UL MU-MIMO transmission such that the received UL signals are processed.

    Abstract translation: 提供了一种在WLAN系统中处理上行链路（UL）信号的方法和设备。 接入点（AP）在多个STA中从一个站（STA）接收发送（RTS）帧的请求，发送用于执行UL多用户多输入多输入多播的STA的组的组标识符（ID） 在一个STA所属的组的组ID中，与一个STA一起输出（MU-MIMO）传输，并从执行UL MU-MIMO传输的STA接收UL信号，使得接收到的UL信号被处理。

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