公开(公告)号：US20190364560A1

公开(公告)日：2019-11-28

申请号：US16436450

申请日：2019-06-10

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Kiseon RYU ,  Jeongki KIM ,  Jinsoo CHOI ,  Dongguk LIM ,  Hangyu CHO ,  Jinmin KIM ,  Eunsung PARK

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

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：US20190327749A1

公开(公告)日：2019-10-24

申请号：US16395963

申请日：2019-04-26

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/12 ,  H04L5/00 ,  H04L1/16 ,  H04L1/18 ,  H04W72/04

Abstract: The present document relates to a method for efficiently performing uplink multi-user transmission in a wireless LAN system and an apparatus therefor. To this end, an access point (AP) may transmit a downlink multi-user frame to a plurality of STAs, receive an uplink frame including an acknowledgement/non-acknowledgement (ACK/NACK) signal for the downlink multi-user frame and an uplink scheduling request signal from at least two STAs among the STAs, transmit a downlink frame including uplink scheduling information to the at least two STAs on the basis of the uplink scheduling request signal, and receive an uplink multi-user frame including data from the at least two STAs in response thereto. Here, an SIG field of the downlink frame preferably comprises an indicator indicating that the downlink frame includes uplink multi-user scheduling information.

公开(公告)号：US20190289549A1

公开(公告)日：2019-09-19

申请号：US16343742

申请日：2017-09-15

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02

Abstract: A method for receiving a WUR signal by an STA, according to one embodiment of the present invention, comprises the steps of: detecting a WUR preamble sequence included in a WUR PPDU through a WUR receiver of the STA, while a WLAN receiver of the STA is turned off; obtaining WUR data included in the WUR PPDU, on the basis of a timing synchronized through the WUR preamble sequence; and outputting a wake-up signal to the WLAN receiver through the WUR receiver of the STA if the WUR data is intended for the STA, wherein the WUR preamble sequence used for the synchronization corresponds to a signature sequence carrying specific information, and the specific information may include at least one of an SU/MU indicator indicating whether the WUR PPDU is for a single user (SU) or a multi-user (MU), and information on the bandwidth of the WLAN PPDU to be received after wake-up by the WLAN receiver.

公开(公告)号：US20190260431A1

公开(公告)日：2019-08-22

申请号：US16346094

申请日：2017-10-30

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin PARK ,  Jinmin KIM ,  Hangyu CHO ,  Kyungtae JO

IPC: H04B7/0417 ,  H04L5/00 ,  H04W72/04

Abstract: According to one embodiment of the present specification, provided is a method by which a station (STA) transmits, through a plurality of channels, signals in a wireless LAN (WLAN) system. The method for transmitting signals comprises the steps of: allowing an STA to transmit a packet for an ISS; allowing the STA to receive a packet for an RSS; allowing the STA to transmit a packet for a SSW feedback; and allowing the STA to receive a packet for an SSW ACK, wherein the packet for the SSW feedback and the packet for the SSW ACK can include a field for indicating whether the packet for the ISS and the packet for the RSS are transmitted into the short SSW packet.

公开(公告)号：US20190246356A1

公开(公告)日：2019-08-08

申请号：US16341863

申请日：2017-10-13

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02 ,  H04W76/11 ,  H04W80/02 ,  H04L27/02

CPC classification number: H04W52/0235 ,  H04L27/02 ,  H04W52/02 ,  H04W76/11 ,  H04W80/02 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/14

Abstract: A method for a station (STA) receiving a wake-up radio (WUR) packet in a wireless LAN (WLAN) system according to an embodiment of the present invention comprises the steps of: entering a WUR mode; receiving a WUR packet in the WUR mode using a WUR receiver of the STA; and determining whether to terminate the WUR mode depending on whether a receiver's address included in the WUR packet corresponds to a WUR ID of the STA, wherein the WUR ID of the STA may be one that is allocated by an access point (AP) via a primary connectivity radio before the STA enters the WUR mode.

公开(公告)号：US20190222401A1

公开(公告)日：2019-07-18

申请号：US16248432

申请日：2019-01-15

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04L27/26 ,  H04L29/08 ,  H04B7/0452

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：US20190191377A1

公开(公告)日：2019-06-20

申请号：US16328676

申请日：2017-08-14

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02 ,  H04L27/06 ,  H04W72/04

Abstract: A method and an apparatus for transmitting a wakeup packet in a wireless LAN system are proposed. Particularly, a transmission device configures a wakeup packet and transmits the wakeup packet to a receiving device. The wakeup packet includes a sequence configured with first information and second information by applying an OOK method. The first information and the second information are configured with an on-signal or an off-signal. The on-signal is transmitted through a first symbol, which is generated by applying a first sequence to K consecutive subcarriers in the 20 MHz band and performing 64-point IFFT. The off-signal is transmitted through a second symbol, which is generated by applying a second sequence to K consecutive subcarriers in the 20 MHz band and performing 64-point IFNT. The first information and the second information are transmitted through a third symbol in which the first symbol or the second symbol is repeated.

公开(公告)号：US20190159245A1

公开(公告)日：2019-05-23

申请号：US16094192

申请日：2017-04-17

Applicant: LG ELECTRONICS INC.

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

IPC: H04W74/00 ,  H04W74/08

Abstract: A method for a frame transmitted on the basis of random access in a wireless LAN system according to the present embodiment comprises the steps of: receiving, by a user STA, a trigger frame from an AP, the trigger frame including identification information for random access and resource information indicating a random access resource unit corresponding to the identification information; performing a countdown operation for the random access resource unit by the user STA; and transmitting, by the user STA, a first uplink frame to the AP on the basis of the random access resource unit obtained through the countdown operation, the first uplink frame including buffer status information associated with traffic buffered in the user STA, wherein the first uplink frame is a frame requesting the AP for transmission of a response.

公开(公告)号：US20190124526A1

公开(公告)日：2019-04-25

申请号：US16091514

申请日：2017-03-03

Applicant: LG ELECTRONICS INC.

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

IPC: H04W24/02

Abstract: Disclosed is a signal processing method for changing an operating mode for transmitting a PPDU in a wireless LAN system. Specifically, a first station transmits, to a second station, the number of spatial streams supported by the first station, and a first instructional information instructing a change of the operating mode indicating a channel bandwidth. The first station applies the first instructional information after receiving an ACK therefor. The first instructional information comprises an operating mode indicator for indicating whether the operating mode is a receive operating mode (ROM) or a transmit operating mode (TOM).

公开(公告)号：US20190123877A1

公开(公告)日：2019-04-25

申请号：US16224634

申请日：2018-12-18

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04L27/26

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 and a data field; and transmitting the PPDU, wherein when the data field is transmitted by using a 106-tone resource unit including first to fourth pilot tones, the positions of the first to the fourth pilot tones may be identical to the positions of four pilot tones from among eight pilot tones included in four 26-tone resource units, which are present at a position corresponding to the 106-tone resource unit, or identical to the positions of four pilot tones from among eight pilot tones included in two 52-tone resource units, which are present at a position corresponding to the 106-tone resource unit.