公开(公告)号：US20170280462A1

公开(公告)日：2017-09-28

申请号：US15505471

申请日：2015-08-21

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Hangyu CHO ,  Kiseon RYU ,  Jinsoo CHOI ,  Wookbong LEE ,  Dongguk LIM

IPC: H04W72/08 ,  H04L1/00 ,  H04W74/04 ,  H04W84/04 ,  H04L27/34 ,  H04L27/26

CPC classification number: H04W72/082 ,  H04L1/00 ,  H04L1/0061 ,  H04L1/1614 ,  H04L1/1671 ,  H04L5/0053 ,  H04L27/2601 ,  H04L27/34 ,  H04W74/04 ,  H04W84/04

Abstract: According to an aspect of the present invention, a method for transmitting data performed by a station (STA) device in a Wireless LAN (WLAN) system may include generating a Physical Protocol Data Unit (PPDU) including a physical preamble and a data field; and transmitting the PPDU, where the physical preamble may include a High Efficiency (HE)-Signal (SIG) A field including common control information and an HE-SIG B field including user-specific information, and where the common control information of the HE-SIG A field may include MCS information of a Modulation and Coding Scheme level applied to the HE-SIG B field.

公开(公告)号：US20170279864A1

公开(公告)日：2017-09-28

申请号：US15506632

申请日：2015-08-27

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Kiseon RYU ,  Wookbong LEE ,  Hangyu CHO

IPC: H04L29/06 ,  H04L5/14 ,  H04L5/00

CPC classification number: H04L65/4076 ,  H04B7/024 ,  H04L1/00 ,  H04L1/1664 ,  H04L1/1685 ,  H04L5/0073 ,  H04L5/14 ,  H04L27/26 ,  H04L2001/0093 ,  H04W28/0215

Abstract: According to an aspect of the present invention, a method for performing a downlink (DL) multi-user (MU) transmission by an access point (AP) in a wireless communication system may include transmitting a DL MU Physical Protocol Data Unit (PPDU), where the DL MU PPDU includes a trigger frame including trigger information for an uplink (UL) MU transmission and a DL MU frame; and UL MU receiving a UL MU PPDU generated based on the DL MU PPDU, where the UL MU PPDU includes a UL MU frame based on the trigger frame and an acknowledge (ACK) frame in response to the DL MU frame.

公开(公告)号：US20170279582A1

公开(公告)日：2017-09-28

申请号：US15504915

申请日：2015-07-24

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom LEE ,  Jiwon KANG ,  Wookbong LEE ,  Jinsoo CHOI ,  Dongguk LIM ,  Hangyu CHO ,  Eunsung PARK

IPC: H04L5/00

CPC classification number: H04L5/0048 ,  H04L27/2613 ,  H04L27/2675 ,  H04L27/3455 ,  H04W84/12

Abstract: Disclosed is a pilot sequence transmission method for generating a BSS composed of a plurality of pilot sequences, and selectively generating an SSS, to be used with the BSS, according to a channel environment such that additional information is transmitted through a pilot sequence selected from a sequence set having the BSS and the SSS. Furthermore, also disclosed is a pilot sequence identification method analyzing a pilot sequence transmitted by a transmitter, so as to obtain additional information.

公开(公告)号：US20170272295A1

公开(公告)日：2017-09-21

申请号：US15500018

申请日：2015-07-02

Applicant: LG ELECTRONICS INC.

Inventor： Wookbong LEE ,  Jinsoo CHOI ,  Eunsung PARK ,  Kiseon RYU ,  Dongguk LIM ,  Hangyu CHO

IPC: H04L27/26 ,  H04W72/04

CPC classification number: H04L27/2608 ,  H04L1/00 ,  H04L1/0071 ,  H04L5/00 ,  H04L27/26 ,  H04L27/2602 ,  H04L27/2628 ,  H04W72/04 ,  H04W84/12

Abstract: Disclosed is a method for a station (STA) device transmitting data in a Wireless Local Area Network (WLAN) system. The method for transmitting data, according to one embodiment of the present invention, comprises the steps of: FEC encoding transmission data; interleaving the transmission data; constellation mapping the transmission data; performing IDFT on the transmission data; and upconverting the transmission data and transmitting a transmission signal, wherein IDFT is performed using different FFT sizes for a first part of the transmission signal and a second part of the transmission signal, and the second part of the transmission signal is allocated to at least one STA in units of at least one resource unit.

公开(公告)号：US20170237543A1

公开(公告)日：2017-08-17

申请号：US15518736

申请日：2015-11-19

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk LIM ,  Wookbong LEE ,  Jinsoo CHOI ,  Hangyu CHO ,  Eunsung PARK

IPC: H04L5/00 ,  H04B7/0452 ,  H04L29/08

CPC classification number: H04L5/0091 ,  H04B7/0452 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0039 ,  H04L5/0048 ,  H04L5/0051 ,  H04L27/261 ,  H04L69/324 ,  H04W84/12

Abstract: A method and apparatus for transmitting frames having a long training field (LTF) for a second type of station (STA) in a wireless communication system are provided. For this, STA prepares a frame having a first part for a first type of STA and a second part for the second type of STA; wherein the second part includes multiple LTFs, when the frame is used for MU (Multiple User) transmission scheme or OFDMA (Orthogonal Frequency Divisional Multiple Access) scheme. In case a first LTF having a first number of symbols length and a second LTF having a second number of symbols length, which is greater than the first number of symbols length, are used for the multiple LTFs, the first LTF is extended such that the first LTF and the second LTF have a same number of symbols length. The STA transmits the prepared frame to one or more STAs.

公开(公告)号：US20170230218A1

公开(公告)日：2017-08-10

申请号：US15518716

申请日：2015-11-02

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung PARK ,  Jinsoo CHOI ,  Dongguk LIM ,  Hangyu CHO ,  Wookbong LEE

IPC: H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2608 ,  H04L5/0048 ,  H04L27/2602 ,  H04L27/261 ,  H04W84/12

Abstract: Disclosed in the present invention are a method for transreceiving a physical protocol data unit (PPDU) in a wireless communication system and a device for same. More specifically, a method for transmitting a physical protocol data unit (PPDU) using a wireless communication device in a wireless communication system comprises the steps of: generating a PPDU including a legacy preamble, an HE-preamble, and a data field; and transmitting the generated PPDU, wherein a minimum integer number of pilot patterns are defined, wherein the minimum integer number is larger than the value obtained by dividing the total number of subcarriers constituting the data field or a fast Fourier transform (FFT) size value used when generating the PPDU by the total number of pilots, wherein specific pilot patterns from among the pilot patterns are allocated to each symbol of the data field, and wherein the index of a subcarrier to which the pilot is mapped may be determined by the pilot patterns.

公开(公告)号：US20170223665A1

公开(公告)日：2017-08-03

申请号：US15500466

申请日：2015-06-26

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Kiseon RYU ,  Wookbong LEE ,  Dongguk LIM ,  Hangyu CHO

IPC: H04W72/04 ,  H04B7/0456

CPC classification number: H04W72/04 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/063 ,  H04B7/0695 ,  H04L5/0092 ,  H04L27/26 ,  H04W72/121 ,  H04W84/12

Abstract: Disclosed in the present invention are a multi-user (MU) transmission method in a wireless communication system and a device therefor. Specifically, the MU transmission method in a wireless communication system comprises a step in which a station (STA) receives, from an access point (AP), an allocation frame comprising resource allocation information for the MU transmission, wherein the allocation frame may comprise indication information for indicating whether the resource allocation information indicates a frequency resource for orthogonal frequency division multiple access (OFDMA) transmission, or indicates a spatial resource for MU multi-input multi-output (MIMO) transmission.

公开(公告)号：US20170214561A1

公开(公告)日：2017-07-27

申请号：US15329532

申请日：2015-07-02

Applicant: LG ELECTRONICS INC.

Inventor： Wookbong LEE ,  Jinsoo CHOI ,  Hangyu CHO ,  Dongguk LIM ,  Eunsung PARK ,  Kiseon RYU ,  Jinyoung CHUN

IPC: H04L27/26 ,  H04L5/00 ,  H04L27/34 ,  H04W28/04 ,  H04L1/00

CPC classification number: H04L27/263 ,  H04L1/00 ,  H04L1/0071 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2602 ,  H04L27/2633 ,  H04L27/3405 ,  H04W28/04 ,  H04W84/12 ,  H04W88/02

Abstract: Disclosed is a method for a station (STA) device transmitting data in a Wireless Local Area Network (WLAN) system. The method for transmitting data, according to one embodiment of the present invention, comprises the steps of: FEC encoding transmission data; interleaving the transmission data; constellation mapping the transmission data; performing IDFT on the transmission data; and upconverting the transmission data and transmitting a transmission signal, wherein the transmission signal comprises a first part and a second part, and IDFT is performed using different FFT sizes for the first part and the second part.

公开(公告)号：US20170180174A1

公开(公告)日：2017-06-22

申请号：US15327365

申请日：2015-08-04

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung PARK ,  Wookbong LEE ,  Jinsoo CHOI ,  Hangyu CHO

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

Abstract: Disclosed is a method for a station (STA) device transmitting data in a wireless local area network (WLAN) system. The method for transmitting data, according to one embodiment of the present invention, comprises the steps of: FEC encoding transmission data; constellation mapping the transmission data; inserting a pilot tone in the transmission data; performing Inverse Discrete Fourier Transform (IDFT) on the transmission data; and upconverting the transmission data and transmitting a transmission signal, wherein, if an Orthogonal Frequency Division Multiple Access (OFDMA) scheme is applied to the transmission signal, the transmission signal comprises at least one tone unit which is the unit of subcarrier allocation of the OFDMA scheme.

公开(公告)号：US20170104570A1

公开(公告)日：2017-04-13

申请号：US15316823

申请日：2015-01-28

Applicant: LG ELECTRONICS INC.

Inventor： Suhwook KIM ,  Kiseon RYU ,  Wookbong LEE ,  Jeongki KIM

IPC: H04L5/00 ,  H04B7/26 ,  H04W74/08 ,  H04W72/04

CPC classification number: H04L5/0055 ,  H04B7/26 ,  H04L27/26 ,  H04W72/0446 ,  H04W74/006 ,  H04W74/0816 ,  H04W84/12

Abstract: Disclosed are a method and apparatus for transmitting a frame. A method for transmitting a frame in a wireless LAN comprises the steps of: an AP transmitting a first RTS frame, through a primary channel, to a plurality of first target STAs; the AP receiving, from one target STA from among the plurality of first target STAs, a first CTS frame as a response to the first RTS frame, through the primary channel; and the AP transmitting, to the plurality of first target STAs, a plurality of pieces of first downlink data for each of the respective plurality of first target STAs, through a plurality of first subbands included in the primary channel on one first data frame, wherein a first RTS frame may include identification information for each of the plurality of first target STAs.