公开(公告)号：US10374767B2

公开(公告)日：2019-08-06

申请号：US15767701

申请日：2016-10-14

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Jinyoung Chun ,  Jinsoo Choi ,  Hangyu Cho ,  Jinmin Kim ,  Eunsung Park

IPC: H04B7/06 ,  H04L5/00 ,  H04W72/04 ,  H04L27/26

Abstract: Provided is a method for a first station (STA) transmitting a frame to a second STA in a wireless LAN system. To this end, the first STA generates a wireless frame comprising a first part (L-part) for a first-type STA and a second part (HE-part) for a second-type STA, wherein the first part comprises a legacy short training field (L-STF), a legacy long training field (L-LTF) and a legacy signaling field (L-SIG), and the length of the L-SIG is set so as to indicate that the wireless frame is a frame of different types according to the remainder when the length of the L-SIG is divided by a predetermined natural number.

公开(公告)号：US10349388B2

公开(公告)日：2019-07-09

申请号：US15242008

申请日：2016-08-19

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung Chun ,  Kiseon Ryu ,  Jeongki Kim ,  Jinsoo Choi ,  Dongguk Lim ,  Hangyu Cho ,  Jinmin Kim ,  Eunsung Park

IPC: H04W72/04 ,  H04W72/08 ,  H04L5/00 ,  H04L1/00 ,  H04W84/12 ,  H04W28/10 ,  H04W4/70 ,  H04L1/06 ,  H04B7/06 ,  H04W88/08

Abstract: Disclosed herein is a sounding method of a station (STA) for sending feedback information about a downlink (DL) channel state in a wireless LAN (WLAN) system. The sounding method includes receiving an NDP announcement (NDPA) frame providing notification of the transmission of a null data packet (NDP) frame; receiving the NDP frame; receiving a trigger frame comprising resource allocation information allocated to the STA; generating feedback information using the NDP frame; and sending a feedback frame comprising feedback information through uplink (UL) multi-user (MU) transmission using a frequency resource indicated by the resource allocation information. The feedback information may be generated in a frequency granularity (FG) unit with respect to a transmission bandwidth having a size smaller than or equal to the size of a transmission bandwidth of the NDP frame.

公开(公告)号：US10334568B2

公开(公告)日：2019-06-25

申请号：US15559781

申请日：2016-07-07

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Jinsoo Choi ,  Hangyu Cho ,  Jinmin Kim ,  Eunsung Park

IPC: H04W72/04 ,  H04B7/26 ,  H04L27/26 ,  H04L1/00 ,  H04L5/00 ,  H04B7/0452 ,  H04W84/12 ,  H04W88/08

Abstract: A method for transmitting a frame by an AP includes generating and transmitting a radio frame including a signaling field and a data field. The signaling field includes a SIG A field including first common control information for the plurality of STAs, and a SIG B field including specific control information for each of the plurality of STAs. The second signaling field includes a common field including second common control information for the plurality of STAs, and a specific field following the common field, including the specific control information for each of the plurality of STAs, and the specific field of the second signaling field transmitted in a specific 20-MHz band includes resource allocation information for one or more first-band STAs to which resources are allocated in the first band, and resource allocation information for one or more second-band STAs to which resources are allocated in another 20-MHz band.

公开(公告)号：US10298304B2

公开(公告)日：2019-05-21

申请号：US15259519

申请日：2016-09-08

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Jinyoung Chun ,  Jinsoo Choi ,  Hangyu Cho ,  Jinmin Kim ,  Eunsung Park

IPC: H04W4/00 ,  H04B7/06 ,  H04L25/02 ,  H04W84/12

Abstract: When an AP (access point) performs sounding to transmit a frame to one or more STAs using a beamforming scheme in a wireless LAN (WLAN) system, the AP receives a beamforming feedback, which is generated based on measurement of a specific signal transmitted by the AP in a manner that the one or more STAs group a prescribed number of tones according to a tone grouping element (Ng). In this case, the Ng is configured by a multiple of 4.

公开(公告)号：US10122508B2

公开(公告)日：2018-11-06

申请号：US15224386

申请日：2016-07-29

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Jinsoo Choi ,  Dongguk Lim ,  Hangyu Cho

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26

Abstract: Proposed herein is a LTF sequence that is used in a wireless LAN system. The proposed LTF sequence may correspond to a sequence for a second frequency band of a second wireless LAN system. The proposed sequence may be generated through a LTF sequence that is used in a first wireless LAN system, which is different from the second wireless LAN system. The LTF sequence of the first wireless LAN system may correspond to a sequence for a first frequency band, which is different from the second frequency band. A length of an IDFT/DFT period and a bandwidth of a transmission frequency that are applied to the LTF sequence of the first wireless LAN system are different from a length of an IDFT/DFT period and a bandwidth of a transmission frequency that are applied to the LTF sequence of the second wireless LAN system.

公开(公告)号：US10051687B2

公开(公告)日：2018-08-14

申请号：US15515123

申请日：2015-04-08

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Wookbong Lee ,  Jinyoung Chun ,  Jinsoo Choi ,  Hangyu Cho ,  Eunsung Park

IPC: H04B7/00 ,  H04B1/00 ,  H04B1/04 ,  H04W88/06 ,  H04L5/00 ,  H04W84/04 ,  H04L27/26 ,  H04W48/10 ,  H04W48/12 ,  H04W74/00 ,  H04W84/12

Abstract: The present document relates to a wireless communication system and, more particularly, to a method for transmitting a frame in a high-density wireless LAN system, and a station device for performing the method. To this end, a station for transmitting a frame is comprised of a radio frame for a second type station comprising a frame portion for a first type station and a frame portion for the second type station, wherein the frame portion for the first type station comprises a first OFDM symbol for transmitting a signaling field (L-SIG) for the first type station, and the frame portion for the second type station comprises one or more second OFDM symbols for transmitting a signaling field (HE-SIG) for the second type station. Additionally, the radio frame for the second type station further comprises one or more third OFDM symbols for transmitting the L-SIG and the HE-SIG repeatedly.

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：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：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：US12237957B2

公开(公告)日：2025-02-25

申请号：US17913285

申请日：2021-03-19

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Jinyoung Chun ,  Jinsoo Choi ,  Dongguk Lim

IPC: H04L27/26 ,  H04L1/00 ,  H04W84/12

Abstract: Proposed are a method and a device for receiving a PPDU in a wireless LAN system. Specifically, a reception STA receives a PPDU from a transmission STA through a broadband and decodes the PPDU. The PPDU includes a legacy preamble, and a first and a second signal field. The legacy preamble and the first and the second signal field are generated on the basis of a first phase rotation value. In a case in which the broadband is a 320 MHz band, the first phase rotation value is [1 1 1 −j j j j 1 j j j 1 −1 −1 −1 j].