公开(公告)号：US10673665B2

公开(公告)日：2020-06-02

申请号：US15327365

申请日：2015-08-04

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Wookbong Lee ,  Jinsoo Choi ,  Hangyu Cho

IPC: H04W84/12 ,  H04W72/04 ,  H04L27/26 ,  H04L5/00 ,  H04L1/00

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：US10667271B2

公开(公告)日：2020-05-26

申请号：US16292849

申请日：2019-03-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04W4/00 ,  H04W72/04 ,  H04L1/00 ,  H04L27/26 ,  H04L5/00 ,  H04W84/12

Abstract: The present invention relates to a method for transmitting a frame in a wireless communication system, in particular, a high density wireless LAN system, and a station apparatus for performing the same. To this end, a station for transmitting a frame configures a radio frame for a second type station, including a frame part for a first type station and a frame part for the second type station, wherein the frame part for the second type station includes a first signaling field (SIG A) for the second type station and a second signaling field (SIG B) for the second type station. The SIG A for the second type station includes modulation and coding scheme (MCS) information applied to the SIG B for the second type station, and the MCS level applied to the SIG B for the second type station supports an MCS having level than the lowest MCS level defined for the first type station.

公开(公告)号：US10609642B2

公开(公告)日：2020-03-31

申请号：US15769702

申请日：2016-11-18

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W52/02 ,  G06F1/3287 ,  G06F1/3209 ,  H04B7/26 ,  H04W84/12

Abstract: A method for a station (STA), which supports a high efficiency physical layer protocol data unit (HE PPDU), for operating in a power-save (PS) mode in a wireless LAN system according to one embodiment of the present invention comprises the steps of: receiving a PPDU; decoding at least a part of the PPDU; and operating in a doze state until the end of the PPDU on the basis of the result of decoding at least a part of the PPDU, wherein if the PPDU is configured as a very high throughput (VHT) PPDU, which is a legacy format compared to the HE PPDU, and the VHT PPDU is determined to be an uplink frame transmitted to an access point (AP) by another STA belonging to the same basic service set (BSS) as the STA, then the STA can operate in a doze state until the end of the PPDU.

公开(公告)号：US10595288B2

公开(公告)日：2020-03-17

申请号：US16321820

申请日：2017-05-17

Applicant: LG ELECTRONICS INC.

Inventor： Kiseon Ryu ,  Jeongki Kim ,  Hyunhee Park ,  Suhwook Kim ,  Hangyu Cho

IPC: H04W74/08 ,  H04W74/00 ,  H04W56/00 ,  H04W84/12 ,  H04L27/26 ,  H04W28/26 ,  H04W72/04

Abstract: A method for transmitting a frame in a wireless LAN system according to the present embodiment comprises: a step of determining whether to transmit a first frame to an AP through an EDCA by comparing a time parameter indicating the time used for transmission of a wireless terminal with a predetermined allowable time; a step of summing up, to the time parameter, a first required time for transmission of the first frame; a step of receiving, from the AP, a trigger frame for multi-user uplink transmission; and a step of performing data processing for a second frame transmitted in response to the trigger frame, wherein a second required time for transmission of the second frame is not summed up to the time parameter.

公开(公告)号：US10582449B2

公开(公告)日：2020-03-03

申请号：US15840676

申请日：2017-12-13

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W52/02 ,  H04W88/08 ,  H04W88/02 ,  H04W84/12

Abstract: A method and an apparatus for a station (STA) to save power in a wireless local area network (WLAN) are provided. For this, the STA receives a MU PPDU (Multi-User Physical Protocol Data unit) comprising A-MPDU (Aggregated MAC Protocol Data Unit) from an AP (Access Point). The STA enters into a doze state until an end of the MU PPDU, when a receiver address of the A-MPDU is equal to the STA's address, and there is an indication indicating a start of EOF (End-Of-Frame) padding.

公开(公告)号：US10575333B2

公开(公告)日：2020-02-25

申请号：US16317808

申请日：2017-07-14

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin Park ,  Jinmin Kim ,  Hangyu Cho ,  Kyungtae Jo

IPC: H04L12/28 ,  H04W74/08 ,  H04W84/12 ,  H04W72/04 ,  H04J1/16

Abstract: The present specification relates to a method for transmitting or receiving data by a station in a wireless LAN (WLAN) system and, more particularly, presents a method and device for transmitting or receiving data on the basis of a beamforming training method for a plurality of channels, when a station transmits the data by using the plurality of channels.

公开(公告)号：US10575314B2

公开(公告)日：2020-02-25

申请号：US15769323

申请日：2016-10-20

Applicant: LG ELECTRONICS INC.

Inventor： Hyunhee Park ,  Kiseon Ryu ,  Jinyoung Chun ,  Jeongki Kim ,  Hangyu Cho ,  Suhwook Kim

IPC: H04W72/08 ,  H04W74/08 ,  H04W84/12

Abstract: According to one embodiment of the present specification, a method for transmitting a trigger frame for requesting uplink data to be received through an wireless resource individually configured in an overlapped time duration from a plurality of terminals in a wireless LAN system, comprises: a step for receiving, by an access point, a first buffer state frame from a first terminal, wherein the first buffer state frame includes first QoS information of first uplink data; a step for receiving, by the access point, a second buffer state frame from a second terminal, wherein the second buffer state frame includes second QoS information of second uplink data; a step for determining, by the access point, a first primary AC for a trigger frame on the basis of the first QoS information and the second QoS information, wherein the access point includes a plurality of AP buffers for downlink data to be transmitted to a plurality of terminals; and a step for transmitting, by the access point, the trigger frame through the downlink buffer corresponding to the determined first primary AC among the plurality of AP buffers.

公开(公告)号：US10568015B2

公开(公告)日：2020-02-18

申请号：US15747685

申请日：2016-08-05

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W4/00 ,  H04W48/02 ,  H04L5/00 ,  H04W84/12 ,  H04W48/08

Abstract: According to one embodiment of the present invention, a method by which a station (STA) performs an extended inter-frame space (EIFS) operation in a wireless LAN system supporting multi-user (MU) transmission comprise the steps of: receiving a MU frame including a SIG-A field and a SIG-B field; estimating, by other STAs for receiving the MU frame, an ACK transmission time (ACK Tx Time) required for transmitting ACK information when the MU frame causes the EIFS operation; and delaying channel access during an EIFS time determined on the basis of the estimated ACK transmission time, wherein the step for estimating the ACK transmission time enables the estimation of the ACK transmission time by assuming the lowest MCS level among modulation and coding scheme (MCS) levels used for the transmission of the ACK information, and the minimum resource (RU) among the RUs used for the transmission of the ACK information.

公开(公告)号：US10560896B2

公开(公告)日：2020-02-11

申请号：US15505550

申请日：2015-08-20

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Jinsoo Choi ,  Giwon Park ,  Hangyu Cho

IPC: H04W52/02 ,  H04W84/12 ,  H04W72/04

Abstract: The present specification relates to a method for transmitting signals by a station (STA) which operates in a wireless LAN system. Here, the method for transmitting signals by a station can comprise: a step of receiving a first frame for converting a power saving (PS) mode, from an access point (AP) station, to an awake mode; and a step of transmitting a second frame for informing the awake mode of the station in response to the first frame. Here, the second frame can be a null data packet (NDP) frame.

公开(公告)号：US10536932B2

公开(公告)日：2020-01-14

申请号：US15241010

申请日：2016-08-18

Applicant: LG ELECTRONICS INC.

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

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

Abstract: Disclosed herein is an operating method of a station (STA) in a wireless LAN (WLAN) system. The method includes receiving a downlink (DL) physical protocol data unit (PPDU) and sending an uplink (UL) PPDU as a response to the DL PPDU. The DL PPDU may include at least one MAC protocol data unit (MPDU) and the at least one MPDU may include a first high efficiency (HE) control field. The UL PPDU may include at least one MAC protocol data unit (MPDU) and the at least one MPDU may include a second high efficiency (HE) control field. The each of the first and second HE control fields corresponds to an HT control field and comprises a plurality of aggregated HE control subfield. The HT control field includes VHT subfield value set to “1” and HE subfield value set to “1”.