公开(公告)号：US20190053240A1

公开(公告)日：2019-02-14

申请号：US16075585

申请日：2017-02-06

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung PARK ,  Jinsoo CHOI ,  Hangyu CHO

IPC: H04W72/04 ,  H04B7/0413

Abstract: Provided are method and device for generating STF signals which can be used in a wireless LAN system. STF signals are comprised in a field which is used for improving AGC estimation of MIMO transmission. Some of the STF signals are used for uplink transmission and can be used for an uplink MU PPDU transmitted from a plurality of STAs. The provided STF signals are, for example, used for an 80+80 MHz or 160 MHz band and can be generated on the basis of a sequence in which a preset M sequence is repeated. The preset M sequence can be a 15-bit length binary sequence.

公开(公告)号：US20190029038A1

公开(公告)日：2019-01-24

申请号：US16139743

申请日：2018-09-24

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Giwon PARK ,  Hangyu CHO ,  Suhwook KIM

IPC: H04W74/08 ,  H04W84/12 ,  H04B17/318 ,  H04W24/02 ,  H04L29/08

Abstract: The present document relates to a method for determining whether a corresponding medium (for example, a channel) is reusable so as to improve a space reuse rate in a wireless communication system, particularly, a wireless LAN system, and an apparatus for the same. To this end, a station receives a wireless LAN signal through a specific wireless medium, compares the received signal intensity of the wireless LAN signal with a CCA level selected from between a first CCA level and a second CCA level lower than the first CCA level according to the type of the received wireless LAN signal, determines that the corresponding wireless medium is usable if the received signal intensity is lower than the selected CCA level, and can use the wireless medium in a signal transmission.

公开(公告)号：US20180332529A1

公开(公告)日：2018-11-15

申请号：US15771658

申请日：2016-11-18

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W52/02 ,  G06F1/32 ,  H04B7/26

CPC classification number: H04W52/0238 ,  G06F1/3209 ,  H04B7/2612 ,  H04W52/02 ,  H04W52/0206 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/14

Abstract: A method for a station (STA) 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 physical layer protocol data unit (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 comprises an aggregate MAC protocol data unit (A-MPDU), then the STA can determine whether to operate in a doze state by considering whether any one from among a receiver address (RA) or a transmitter address (TA) included in the A-MPDU matches the BSSID of a basic service set (BSS) associated with the STA.

公开(公告)号：US20180317242A1

公开(公告)日：2018-11-01

申请号：US15771901

申请日：2016-10-27

Applicant: LG ELECTRONICS INC.

Inventor： Hyunhee PARK ,  Kiseon RYU ,  Jeongki KIM ,  Hangyu CHO ,  Suhwook KIM

IPC: H04W72/12 ,  H04W74/08

CPC classification number: H04W74/00 ,  H04W74/08 ,  H04W84/12

Abstract: A method for transmitting uplink frames of multiple users in a wireless LAN system according to an embodiment of the present invention comprises the steps of: an STA performing a countdown operation of a backoff counter for a contention-based channel access; the STA receiving a trigger frame which individually allocates uplink radio resources for the multiple users; the STA suspending the countdown operation until the uplink transmission of the trigger-based frame is terminated, wherein the trigger-based frame is a frame transmitted through an overlapped time interval in response to the trigger frame; determining whether the STA receives an acknowledgment (ACK) frame corresponding to the trigger-based frame from an AP; and if the STA fails to receive the ACK frame from the AP, the STA resuming a suspended countdown operation.

公开(公告)号：US20180220443A1

公开(公告)日：2018-08-02

申请号：US15506223

申请日：2015-08-31

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Jinsoo CHOI ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W72/12 ,  H04W74/06 ,  H04W72/04 ,  H04W28/20

CPC classification number: H04W72/1278 ,  H04W28/20 ,  H04W72/0406 ,  H04W72/1289 ,  H04W74/04 ,  H04W74/06 ,  H04W84/12

Abstract: The present specification discloses a method by which a station (STA) operating in a wireless LAN system transmits a signal. Here, the method comprises the steps of: receiving a first frame including resource allocation information from an AP station; and transmitting a second frame to the AP station on the basis of the resource allocation information, wherein the first frame includes an allocation type part and a trigger frame body part, and the second frame can be set to an NDP frame and the trigger frame body part can include allocation information on the NDP frame when the allocation type part is set to a first value.

公开(公告)号：US20180213596A1

公开(公告)日：2018-07-26

申请号：US15925663

申请日：2018-03-19

Applicant: LG ELECTRONICS INC.

Inventor： Kiseon RYU ,  Suhwook KIM ,  Jinyoung CHUN ,  Jeongki KIM ,  Giwon PARK ,  Hangyu CHO

IPC: H04W84/12 ,  H04W88/10 ,  H04W74/08 ,  H04L12/801 ,  H04W72/04 ,  H04W28/02 ,  H04W74/00

CPC classification number: H04W84/12 ,  H04L47/10 ,  H04L47/12 ,  H04W28/021 ,  H04W28/0278 ,  H04W72/0413 ,  H04W74/004 ,  H04W74/085 ,  H04W74/0866 ,  H04W88/10

Abstract: A method and an apparatus for triggering uplink data in a wireless LAN are disclosed. A method for receiving uplink data in a wireless LAN may comprise: a step in which an access point (AP) transmits a trigger frame for random connection; and a step in which the AP receives at least one buffer status report frame from at least one STA on a random connection transmission opportunity (TXOP) which is set on the basis of the trigger frame for random connection, wherein the random connection TXOP is allocated for a channel access attempt for transmitting the buffer status report frame of each of a plurality of non-specific STAs, and each of the at least one STA may be an STA which succeeds in the channel access among the plurality of non-specific STAs.

公开(公告)号：US20180212725A1

公开(公告)日：2018-07-26

申请号：US15329227

申请日：2015-10-15

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04B7/0452 ,  H04L27/26

Abstract: The present invention relates to a method for transmitting and receiving a Physical Protocol Data Unit (PPDU) and an apparatus for supporting the same. Particularly, a method for transmitting a Physical Protocol Data Unit (PPDU) performed by an apparatus in a wireless communication system may include generating a High Efficiency-Short Training Field (HE-STF) sequence in a frequency domain throughout a transmission bandwidth of the PPDU and transmitting the PPDU that includes an HE-STF field which is constructed based on the HE-STF sequence, wherein the HE-STF sequence may be mapped to a data tone except a direct current tone and a guard tone, and wherein a non-zero value may be mapped to all data tones that include a tone index which is a multiple of a predetermined value in the data tone.

公开(公告)号：US20180167882A1

公开(公告)日：2018-06-14

申请号：US15564025

申请日：2016-04-11

Applicant: LG ELECTRONICS INC.

Inventor： Hyeyoung CHOI ,  Kiseon RYU ,  Jeongki KIM ,  Hangyu CHO ,  Suhwook KIM

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

Abstract: One embodiment of the present invention is a method for a STA transmitting/receiving a frame in a wireless communication system, the method for transmitting/receiving a frame comprising the steps of: receiving a beacon frame comprising TIM information and trigger frame information; and entering into doze mode, wherein the trigger frame information comprises information indicating the existence or not of resource allocation for random access, and the trigger frame information comprises UL MU frame type information.

公开(公告)号：US20180152960A1

公开(公告)日：2018-05-31

申请号：US15102864

申请日：2014-12-05

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Giwon PARK ,  Hangyu CHO ,  Suhwook KIM

IPC: H04W72/12 ,  H04W74/08 ,  H04W76/27 ,  H04W48/12 ,  H04W72/04

CPC classification number: H04W72/1273 ,  H04W48/12 ,  H04W72/042 ,  H04W74/0816 ,  H04W76/20 ,  H04W76/27 ,  H04W84/12

Abstract: The present document relates to a wireless communication system and, more particularly, to a method for performing communication using a downlink (DL) oriented channel in a high-density wireless LAN system and an apparatus therefor. A particular station STA1 configured therefor connects with an AP through a normal channel, switches to a downlink oriented channel during an active mode operation, and receives data from the AP through the DL oriented channel. Meanwhile, data is transmitted to the AP through switching to the normal channel. Here, the first station obtains information on a specific interval for receiving data from the AP through the downlink oriented channel, switches to the normal channel during an interval other than the specific interval, and transmits data to the AP.

公开(公告)号：US20180146476A1

公开(公告)日：2018-05-24

申请号：US15574777

申请日：2016-05-20

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W72/04 ,  H04W74/08 ,  H04W28/18 ,  H04W74/00

CPC classification number: H04W72/0446 ,  H04W28/18 ,  H04W74/006 ,  H04W74/008 ,  H04W74/0808 ,  H04W74/0841 ,  H04W84/12

Abstract: The present invention relates to a method for performing random access in a wireless LAN system and a device for same. To this end, a station receives from an AP a frame comprising resource allocation information for random access and performs backoff, on the basis of a predetermined contention window size, in resources allocated on the basis of the resource allocation information for random access. In addition, the station transmits, at a first point in which a backoff counter reaches 0, a second frame by means of randomly selected resources which have been randomly selected among the resources that have been allocated as specified, wherein the STA performs clear channel assessment (CCA) for the resources that have been allocated on the basis of the resource allocation information for random access and thus controls the transmission of the second frame by means of the randomly selected resources on the basis of a CCA result.