公开(公告)号：US20190097862A1

公开(公告)日：2019-03-28

申请号：US15527289

申请日：2015-11-17

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom LEE ,  Wookbong LEE ,  Eunsung PARK ,  Hangyu CHO ,  Jiwon KANG

IPC: H04L27/26 ,  H04L27/227

CPC classification number: H04L27/2676 ,  H04L5/0007 ,  H04L5/001 ,  H04L27/0014 ,  H04L27/227 ,  H04L27/2657 ,  H04L2027/0026

Abstract: Disclosed is a CFO estimation method, which generates a first function defined by a received signal of two sequential OFDM symbols for a specific subcarrier, generates a second function defined on the basis of signs and magnitudes of a real number part and an imaginary number part of the first function, repeats the steps of generating the first function and the second function for all of a subcarrier set, and determines, as a residual CFO, a phase of a third function obtained by adding up the results of the repetition.

公开(公告)号：US20180310330A1

公开(公告)日：2018-10-25

申请号：US15527692

申请日：2015-11-30

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/12 ,  H04W72/04 ,  H04W74/00 ,  H04W74/08 ,  H04L5/00

CPC classification number: H04W72/1284 ,  H04L5/0053 ,  H04L5/0091 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/1289 ,  H04W74/006 ,  H04W74/0833

Abstract: Disclosed is an uplink (UL) multi-user (MU) transmission method by a station (STA) in a wireless LAN (WLAN) system. The uplink multi-user transmission method by an STA in a WLAN system according to the present invention includes the steps of: receiving a trigger frame including resource unit allocation information for orthogonal frequency division multiple access (OFDMA) transmission; transmitting a UL MU physical protocol data unit (PPDU) frame, on the basis of frequency resource allocation information; and receiving an ACK frame for the UL MU PPDU.

公开(公告)号：US20180263047A1

公开(公告)日：2018-09-13

申请号：US15534279

申请日：2015-05-19

Applicant: LG ELECTRONICS INC.

Inventor： Suhwook KIM ,  Kiseon RYU ,  Wookbong LEE ,  Hangyu CHO

IPC: H04W72/12 ,  H04L29/06 ,  H04W74/00 ,  H04L5/00 ,  H04W52/02

CPC classification number: H04W72/1205 ,  H04L5/0053 ,  H04L5/0094 ,  H04L67/04 ,  H04L69/22 ,  H04L69/324 ,  H04W52/0216 ,  H04W74/002 ,  H04W74/006 ,  H04W74/02 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/14 ,  Y02D70/142 ,  Y02D70/22

Abstract: Disclosed are a method and an apparatus for transmitting a data unit on the basis of a trigger frame. A method of transmitting a data unit in a wireless LAN may comprise the steps in which: an STA receives a trigger frame from an AP; and in response to the trigger frame, the STA transmits, to the AP, an UL MU PPDU on a sub-channel, wherein a PPDU header of the UL MU PPDU comprises a MAC indicator field and at least one MAC header field, the MAC indicator field comprises at least one sub-indicator, each of the at least one sub-indicator indicates whether or not each of the at least one MAC header field is present, and each of the at least one MAC header field may correspond to each of the at least one field included in the MAC header of the UL MU PPDU.

公开(公告)号：US20180131553A1

公开(公告)日：2018-05-10

申请号：US15563945

申请日：2016-04-04

Applicant: LG ELECTRONICS INC.

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

IPC: H04L27/26 ,  H04L1/00 ,  H04L5/00

CPC classification number: H04L27/2613 ,  H04B7/0452 ,  H04L1/0004 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/02 ,  H04L25/38 ,  H04L27/02 ,  H04W84/12

Abstract: The present specification presents a configuration technique of a field for control information in a wireless communication system. Specifically, presented is a configuration technique of a signal field including user-specific information in a wireless LAN system. A plurality of MCS techniques are applied to each field of a signal field, according to the present embodiment, and each field can be ordered according to the MCS techniques. The signal field according to the present embodiment can be used for a single user or multiple users, wherein the length of each field can be determined for blind decoding of the single user and the multiple users. The signal field according to the present embodiment can be an SIG-B field according to a wireless LAN standard.

公开(公告)号：US20170373901A1

公开(公告)日：2017-12-28

申请号：US15540517

申请日：2016-01-22

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk LIM ,  Jinyoung CHUN ,  Wookbong LEE ,  Jeongki KIM ,  Hangyu CHO ,  Jinmin KIM

IPC: H04L27/26 ,  H04W48/12 ,  H04W72/04 ,  H04L5/00 ,  H04W84/12 ,  H04B7/0452

CPC classification number: H04L27/2613 ,  H04B7/0452 ,  H04L5/003 ,  H04W48/12 ,  H04W72/0406 ,  H04W72/0453 ,  H04W84/12

Abstract: A method and apparatus for transmitting frames having a signaling field (SIG) 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. Here, the second part includes a first signaling field (HE-SIG A) for common control information and a second signaling field (HE-SIG B) for signaling information comprising user specific control information. Regarding the second signaling field, independent signaling information for the second signaling field (HE-SIG B) is to be transmitted for each 20 MHz bandwidth within a first 40 MHz bandwidth. And the signaling information of the first 40 MHz bandwidth is duplicated in a second 40 MHz bandwidth, when the frame is to be transmitted in a bandwidth equals to or greater than 80 MHz. STA transmits this prepared frame to one or more STAs.

公开(公告)号：US20170339701A1

公开(公告)日：2017-11-23

申请号：US15524555

申请日：2015-11-05

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo CHOI ,  Hangyu CHO ,  Wookbong LEE ,  Jeongki KIM

IPC: H04W72/04 ,  H04W84/12

CPC classification number: H04W72/0486 ,  H04L5/00 ,  H04L5/0007 ,  H04L5/0094 ,  H04W72/121 ,  H04W84/12

Abstract: Disclosed are a method and a device for allocating a resource unit on the basis of a container in a wireless LAN. The method for allocating a resource unit in a wireless LAN comprises the steps of: generating, by an AP, a PPDU to be transmitted to a plurality of STAs; and transmitting, by the AP, the PPDU to the plurality of STAs through at least one container allocated on the entire frequency band, wherein the PPDU includes MU/SU transmission indication information and resource allocation information for each container, the MU/SU transmission indication information includes information on whether an SU-based transmission or an MU-based transmission is carried out on the entire bandwidth, and the resource allocation information for each container can include information on the number of STAs allocated to each of the at least one container.

公开(公告)号：US20170338927A1

公开(公告)日：2017-11-23

申请号：US15523226

申请日：2015-11-02

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04L27/26 ,  H04W84/12

CPC classification number: H04L5/0051 ,  H04L5/0044 ,  H04L5/0048 ,  H04L27/26 ,  H04W84/12

Abstract: A method for transmitting data from a station (STA) device in a wireless LAN (WLAN) system, according to one embodiment of the present invention, comprises the steps of: generating a physical protocol data unit (PPDU) including a physical preamble, which includes a legacy preamble and a high efficiency-long training field (HE-LTF), and a data field; and transmitting the PPDU, wherein the data field is transmitted at four times (4×) the inverse discrete Fourier transform (IDFT)/discrete Fourier transform (DFT) cycle of the legacy preamble, the HE-LTF is a 4×HE-LTF or a 2×HE-LTF which is respectively transmitted at the four times or two times (2×) the IDFT/DFT cycle of the legacy preamble, and wherein pilot tones of the HE-LTF may be inserted only into subcarriers having an even number of indexes from among subcarriers to which the 4×HE-LTF is mapped.

公开(公告)号：US20170303280A1

公开(公告)日：2017-10-19

申请号：US15505521

申请日：2015-08-21

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04L27/26 ,  H04W84/12

Abstract: Disclosed are an uplink transmission method in a wireless communication system and an apparatus therefor. In detail, the method for a uplink (UL) multi-user (MU) transmission by a station (STA) in a wireless communication system includes receiving a trigger frame including frequency resource allocation information in a subband unit for orthogonal frequency division multiple access (OFDMA) transmission from an access point (AP), and transmitting a UL MU PPDU based on the frequency resource allocation information, wherein the UL MU PPDU includes a high efficiency-short training field (HE-STF), a high-efficiency-long training field (HE-LTF), and a data field, and the HE-STF, the HE-LTF, and the data field are transmitted in a subband indicated by the frequency resource allocation information.

公开(公告)号：US20170289963A1

公开(公告)日：2017-10-05

申请号：US15510230

申请日：2015-09-14

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo CHOI ,  Wookbong LEE ,  Hangyu CHO

IPC: H04W72/04 ,  H04W72/12

CPC classification number: H04W72/04 ,  H04L5/0007 ,  H04W72/0453 ,  H04W72/12 ,  H04W84/12 ,  H04W88/08

Abstract: A method and a device for allocating resource units in a wireless LAN are disclosed. The method for allocating resource units in a wireless LAN can comprise the steps of: scheduling, by an AP, wireless resources for communicating with an STA on a bandwidth; and transmitting, by the AP, downlink data to the STA through the wireless resources, wherein the wireless resources are determined on the basis of a resource allocation combination according to the bandwidth size, and the resource allocation combination is a combination of at least one resource unit allocable on the whole available tone according to the bandwidth size, and the whole available tone can be a multiple of 242 tones according to the bandwidth size.

公开(公告)号：US20170289962A1

公开(公告)日：2017-10-05

申请号：US15508819

申请日：2015-09-04

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Wookbong LEE ,  Jinsoo CHOI ,  Hangyu CHO

IPC: H04W72/04 ,  H04B7/0452 ,  H04L5/00

CPC classification number: H04W72/04 ,  H04B7/0452 ,  H04L5/0007 ,  H04W72/042 ,  H04W74/04 ,  H04W74/0808 ,  H04W84/12

Abstract: The present document is for flexibly resource allocation in a wireless LAN system. To this end, an STA prepares resource allocation information in which data is to be transmitted to a plurality of STAs by using an orthogonal frequency divisional multiple access (OFDMA) scheme or a multiple user MIMO (MU-MIMO) scheme, and transmits the data to the plurality of STAs according to the resource allocation information. The resource allocation information preferably includes a group ID indicating the plurality of STAs, a resource allocation bitmap having a format in common with the plurality of STAs, resource allocation information for each of the plurality of STAs and resource allocation sequence information indicating a resource allocation order of the STAs in the group.