公开(公告)号：US10015035B2

公开(公告)日：2018-07-03

申请号：US15523582

申请日：2015-11-02

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom Lee ,  Wookbong Lee ,  Eunsung Park ,  HanGyu Cho ,  Jiwon Kang

IPC: H04L27/22 ,  H04L27/26 ,  H04W84/12

CPC classification number: H04L27/2657 ,  H04L27/22 ,  H04W84/12

Abstract: Disclosed is a CFO estimation method comprising: generating a first function defined by reception signals in two successive OFDM symbols for a particular subcarrier; generating a second function defined on the basis of a sign of a real part of the first function; repeatedly performing a process of generating the first function and the second function for an entire subcarrier set; and determining a phase of a third function obtained by adding results of the repeated performance to be a residual CFO.

公开(公告)号：US09705574B2

公开(公告)日：2017-07-11

申请号：US15113989

申请日：2015-03-03

Applicant: LG ELECTRONICS INC.

Inventor： Sanggook Kim ,  Wookbong Lee

IPC: H04B7/04 ,  H04W72/04 ,  H04B1/02 ,  H04B7/06 ,  H04B7/0413 ,  H04L5/00 ,  H04J11/00 ,  H03M13/11

CPC classification number: H04B7/0413 ,  H03M13/11 ,  H03M13/258 ,  H03M13/2957 ,  H04B1/02 ,  H04B7/0469 ,  H04B7/061 ,  H04B7/0617 ,  H04B7/063 ,  H04B7/0678 ,  H04B7/0689 ,  H04J11/0053 ,  H04L1/0009 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0057 ,  H04W72/04

Abstract: The present invention relates to a wireless access system, and more particularly, to a method and apparatus for transmitting data signal by using a massive Multi Input Multi Output (MIMO). In one aspect of the present invention, a method for transmitting data signals by using a massive Multi Input Multi Output (MIMO), the method is performed by a transmitter and comprises steps of inputting input bits of data signals to a channel encoder; outputting from the channel encoder a first coded bit set including one or more coded bits and second coded bit sets including one or more coded bits; transmitting first data signals of the first coded bit set by applying a first MIMO mode; and transmitting second data signals of the second coded bit sets by applying a second MIMO mode.

公开(公告)号：US09386556B2

公开(公告)日：2016-07-05

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 ,  H04B7/02 ,  H04B7/06 ,  H04W24/08 ,  H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04L1/00

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。

公开(公告)号：US20150206190A1

公开(公告)日：2015-07-23

申请号：US14417056

申请日：2013-11-05

Applicant: LG ELECTRONICS INC.

Inventor： Wookbong Lee ,  Byungjoo Lee ,  Dongcheol Kim ,  Hangyu Cho ,  Jinho Kim

IPC: G06Q30/02

CPC classification number: G06Q30/0267 ,  G06Q30/0277 ,  H04L67/16 ,  H04W48/16 ,  H04W76/14 ,  H04W84/12 ,  H04W92/18

Abstract: The present invention relates to a wireless communication system, and a method for searching for or advertising a service and a device for the same. A method for searching for a service, according to one embodiment of the present invention, can comprise: transmitting a probe request frame to search for a device supporting a predetermined service desired by a first wireless device; receiving a probe response frame from a second wireless device supporting the predetermined service; transmitting, by the first wireless device, a service search request frame including a service name of the predetermined service to the second wireless device; and receiving a service search response frame from the second wireless device, wherein the service search response frame can include service status information indicating whether the predetermined service is available on the second wireless device.

Abstract translation: 本发明涉及一种无线通信系统，以及用于搜索或广告服务的方法及其设备。 根据本发明的一个实施例的用于搜索服务的方法可以包括：发送探测请求帧以搜索支持第一无线设备期望的预定服务的设备; 从支持所述预定服务的第二无线设备接收探测响应帧; 由所述第一无线设备向所述第二无线设备发送包括所述预定服务的服务名称的服务搜索请求帧; 以及从所述第二无线设备接收服务搜索响应帧，其中所述服务搜索响应帧可以包括指示所述预定服务在所述第二无线设备上是否可用的服务状态信息。

公开(公告)号：US20150063332A1

公开(公告)日：2015-03-05

申请号：US14390090

申请日：2013-03-27

Applicant: LG Electronics Inc.

Inventor： Wookbong Lee ,  Suhwook Kim ,  Jimsam Kwak

IPC: H04W74/00

CPC classification number: H04W74/002 ,  H04W16/14 ,  H04W72/02 ,  H04W84/12

Abstract: A method for setting an operating channel in a white space band and a device therefore are disclosed. Specifically, a method for setting an operating channel in a white space band by a device comprises the following steps: receiving a white space map including information on a an available TV channel and an offset value in the available TV channel; and setting an operating channel on the basis of the information on the available TV channel and the offset value in the available TV channel, wherein the offset value indicates a shift amount of the center frequency of the operating channel from the center frequency of the available TV channel.

Abstract translation: 因此，公开了一种用于设置白色空间频带中的操作信道的方法和装置。 具体地，用于通过设备设置白色空间频带中的操作信道的方法包括以下步骤：接收包括关于可用TV频道的信息的白空间地图和可用TV频道中的偏移值; 并且根据可用TV频道上的信息和可用TV频道中的偏移值来设置操作频道，其中偏移值指示从可用TV的中心频率起的操作频道的中心频率的偏移量 渠道。

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。

公开(公告)号：US20150003369A1

公开(公告)日：2015-01-01

申请号：US14377534

申请日：2013-02-08

Applicant: LG ELECTRONICS INC.

Inventor： Suhwook Kim ,  Jinsam Kwak ,  Wookbong Lee ,  Seunghee Han

IPC: H04W74/08

CPC classification number: H04W74/0808 ,  H04W16/14

Abstract: One embodiment of the present invention relates to a method for transmitting a signal by a terminal in a wireless communication system which comprises a step wherein, during a predetermined time period in one portion of the frequency bandwidths from among the frequency bandwidths of channels used by said terminal, a carrier wave sensing signal of another terminal is transmitted in which information on the frequency bandwidths of the channel is included.

Abstract translation: 本发明的一个实施例涉及一种在无线通信系统中由终端发送信号的方法，该无线通信系统包括以下步骤：在所述频带所使用的信道的频带宽度的频带宽度的一部分中的预定时间段内， 发送另一个终端的载波检测信号，其中包括关于频道的频率带宽的信息。

公开(公告)号：US20140376474A1

公开(公告)日：2014-12-25

申请号：US14373093

申请日：2013-01-18

Applicant: LG Electronics Inc.

Inventor： Wookbong Lee ,  Seunghee Han ,  Suhwook Kim ,  Yongho Seok ,  Jinsam Kwak ,  Jinyoung Chun ,  Jaehyung Song

IPC: H04W72/02 ,  H04W48/16 ,  H04W16/14

CPC classification number: H04W72/02 ,  H04W16/14 ,  H04W48/16 ,  H04W72/08 ,  H04W84/12

Abstract: Disclosed are a method for setting an operating channel in a white space band and a device therefor. Particularly, a method for enabling a first device to set an operating channel in a white space band comprises the steps of: acquiring information on an available TV channel from a geo-location database; and setting an operating channel on the basis of the information on the available TV channel, wherein a center frequency of the operating channel can be set differently according to a TV channel used by an incumbent device among TV channels adjacent to the TV channel on which the operating channel is set.

Abstract translation: 公开了一种用于设置白色空间频带中的操作信道的方法及其装置。 特别地，一种使第一设备能够在白色空间频段中设置操作信道的方法包括以下步骤：从地理位置数据库获取关于可用TV频道的信息; 并且根据可用TV频道上的信息来设置操作频道，其中可以根据现有设备在与TV频道相邻的TV频道中使用的TV频道不同地设置操作频道的中心频率，其中， 操作通道设置。

公开(公告)号：US11671219B2

公开(公告)日：2023-06-06

申请号：US17833259

申请日：2022-06-06

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Wookbong Lee ,  Hangyu Cho

IPC: H04L5/00 ,  H04B7/0413 ,  H04B7/0452 ,  H04L27/26 ,  H04L69/323 ,  H04L69/324 ,  H04W84/12

CPC classification number: H04L5/005 ,  H04L5/0023 ,  H04B7/0413 ,  H04L5/0037 ,  H04L27/266 ,  H04L27/2613 ,  H04L27/2672 ,  H04L27/26132 ,  H04L69/323 ,  H04L69/324 ,  H04W84/12

Abstract: Disclosed are a method for multi-user transmission and reception in a wireless communication system and a device for same. More particularly, a method for performing multi-user (MU) transmission by a station (STA) device in a wireless communication system comprises the steps of: generating a high efficiency-long training field (HE-LTF) sequence in a frequency domain in accordance with an MU transmission bandwidth; and transmitting a physical protocol data unit (PPDU) which comprises one or more symbols to which the HE-LTF sequence is mapped, wherein the HE-LTF sequence can be generated by multiplying one row of a P matrix to a length unit of a row of the P matrix in a predetermined sequence.

公开(公告)号：USRE49420E1

公开(公告)日：2023-02-14

申请号：US17098104

申请日：2020-11-13

Applicant: LG Electronics Inc.

Inventor： Jinyoung Chun ,  Kiseon Ryu ,  Wookbong Lee ,  Jinsoo Choi ,  Hangyu Cho ,  Suhwook Kim

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/0452 ,  H04L1/00 ,  H04L1/06 ,  H04L1/1607 ,  H04L65/40 ,  H04L69/323 ,  H04W74/00 ,  H04W72/04

Abstract: In the present invention, disclosed is a method for uplink multi-user transmission in a wireless communication system and an apparatus therefor. Specifically, a method for performing, by a station (STA), uplink (UL) multi-user (MU) transmission in a wireless communication system comprises the steps of: receiving, from an access point (AP), a trigger frame including information for UL MU transmission; and transmitting an UL MU PPDU on the basis of the information for UL MU transmission, wherein the trigger frame is a medium access control (MAC) frame, a MAC header of the trigger frame includes a type field and a subtype field, and the type of the trigger frame may be indicated by the type field and the subtype field.