公开(公告)号：US10764921B2

公开(公告)日：2020-09-01

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 ,  H04W84/12 ,  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：US10743316B2

公开(公告)日：2020-08-11

申请号：US16597735

申请日：2019-10-09

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04W52/54 ,  H04W74/08 ,  H04W74/00 ,  H04W52/14 ,  H04W84/12

Abstract: Proposed is a method for determining transmission using a network allocation vector (NAV) in a wireless LAN system. Specifically, after a receiving device receives a trigger frame, which triggers an uplink multiple user transmission, from a transmitting device, whether to transmit an uplink physical layer protocol data unit (PPDU) corresponding to the trigger frame is determined using the NAV of the receiving device. In this case, if the NAV is established by an intra-basic service set (BSS) frame, whether to transmit the uplink PPDU is determined without taking the NAV into consideration.

公开(公告)号：US10728799B2

公开(公告)日：2020-07-28

申请号：US15770440

申请日：2016-10-24

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung Chun ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W28/06 ,  H04W74/00 ,  H04W80/02 ,  H04W28/02 ,  H04W84/12 ,  H04L1/00 ,  H04L1/16 ,  H04B7/26 ,  H04B7/06 ,  H04L5/00 ,  H04L29/06

Abstract: According to one embodiment of the present invention, an operation method for a station (STA) in a wireless LAN (WLAN) system comprises the steps of receiving a first physical protocol data unit (PPDU), and transmitting a second PPDU as a response to the first PPDU, wherein the first or second PPDU includes at least one MAC protocol data unit (MPDU), a MAC header of the MPDU includes a high-efficiency (HE) control field, the HE control field is a high throughput (HT) field, in which each of values of a very high throughput (VHT) sub-field indicating a VHT format and an HE sub-field indicating an HE format is set to “1”, and includes at least one control sub-field, and the at least one control sub-field is fixed at a preset length and can be included in the HE control field by being aggregated for each control identifier (ID).

公开(公告)号：US10701730B2

公开(公告)日：2020-06-30

申请号：US15579939

申请日：2016-06-07

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin Kim ,  Kiseon Ryu

IPC: H04W74/08 ,  H04L27/26 ,  H04L27/00 ,  H04W84/12 ,  H04W74/00 ,  H04L5/00 ,  H04W16/14

Abstract: Disclosed herein is a spatial reuse (SR) method of a first station (STA) associated with a first basic service set (BSS) in a wireless LAN (WLAN) system may include receiving an inter-BSS physical protocol data unit (PPDU) from an AP or second STA associated with a second BSS different from the first BSS, wherein the inter-BSS PPDU includes a physical (PHY) preamble and an inter-BSS frame and the high efficiency (HE)-signal (SIG) A field of the PHY preamble includes an SR indicator indicating whether SR is allowed; performing CCA on a channel based on a clear channel assessment (CCA) level, that is, a criterion by which the busy or idle state of the channel is determined if the SR indicator indicates that the SR is allowed; and transmitting a signal through the idle channel when the channel is idle as a result of the execution of the CCA.

公开(公告)号：US10667302B2

公开(公告)日：2020-05-26

申请号：US16087566

申请日：2017-03-22

Applicant: LG ELECTRONICS INC.

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

IPC: H04W74/08 ,  H04W84/12 ,  H04L1/18 ,  H04L5/00 ,  H04W28/06 ,  H04W72/12 ,  H04L1/16

Abstract: A method for transmitting an uplink frame in a wireless LAN system according to an embodiment of the present specification comprises the steps in which: a user STA configures a backoff counter for contention-based channel access according to first parameter information for multiple users when a first trigger frame for uplink transmission of the multiple users is received from an AP; the user STA performs a countdown operation on the basis of the backoff counter configured according to the first parameter information; the user STA interrupts the countdown operation in order to transmit a trigger-based uplink frame in response to a second trigger frame when the second trigger frame is received; and the user STA resumes the countdown operation, which has been interrupted, when an ACK frame corresponding to the trigger-based uplink frame is not received.

公开(公告)号：US10667281B2

公开(公告)日：2020-05-26

申请号：US16539479

申请日：2019-08-13

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/00 ,  H04W74/00 ,  H04W72/10 ,  H04L5/00 ,  H04W72/04 ,  H04W84/12 ,  H04L29/12 ,  H04W72/08

Abstract: A method for a WLAN system including transmitting, by a first station (STA), a trigger frame triggering uplink multi-user (UL MU) transmission from a second STA, in which the trigger frame includes preference information related to an access category (AC) type for an aggregation frame to be generated by the second STA and limit information related to a maximum number of traffic identifiers (TIDs) for the aggregation frame. In response to the trigger frame, the first STA may receive a UL frame configured based on the aggregation frame and a Quality of Service (QoS) null frame which has an acknowledgement (ACK) policy field being set to no ACK. When the QoS null frame is aggregated, the preference information and the limit information may be disregarded.

公开(公告)号：US10587381B2

公开(公告)日：2020-03-10

申请号：US16030744

申请日：2018-07-09

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung Chun ,  Kiseon Ryu ,  Wookbong Lee ,  Jinsoo Choi ,  Dongguk Lim ,  Hangyu Cho ,  Suhwook Kim

IPC: H04L5/00 ,  H04B7/0417 ,  H04W84/12 ,  H04B7/0452

Abstract: A method and apparatus for transmitting a frame on the basis of a sounding procedure is disclosed. The method for transmitting the frame on the basis of a sounding procedure in a wireless LAN may comprise the steps of: transmitting an NDPA frame to each of multiple STAs by an AP wherein the NDPA frame notifies of the transmission of NDP; transmitting the NDP to each of the multiple STAs by the AP; receiving, by the AP, multiple feedback frames transmitted through multiple transmission sources allocated to the multiple STAs in time sources overlapped by the multiple STAs, respectively; and transmitting, by the AP, multiple downlink frames to the multiple STAs respectively.

公开(公告)号：US10575280B2

公开(公告)日：2020-02-25

申请号：US15537356

申请日：2015-12-15

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung Chun ,  Kiseon Ryu ,  Wookbong Lee ,  Hangyu Cho

IPC: H04W4/00 ,  H04W72/04 ,  H04L1/18 ,  H04L27/26 ,  H04W84/12

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

公开(公告)号：US10524288B2

公开(公告)日：2019-12-31

申请号：US15549997

申请日：2015-08-07

Applicant: LG ELECTRONICS INC.

Inventor： Suhwook Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W74/08 ,  H04W84/12 ,  H04W74/00

Abstract: A method and an apparatus for increasing transmission coverage of an STA performing an initial access in a wireless LAN are disclosed. An initial access method in a wireless LAN can comprise the steps of: transmitting a trigger frame on a channel by an AP; receiving, by the AP, a first probe request frame transmitted on a first sub-channel by a first STA as a response to the trigger frame; and transmitting, by the AP, on the channel, an MU PPDU including a first probe response frame, which is a response to the first probe request frame, and a second probe response frame, which is a response to the second probe request frame, wherein the channel can include the first sub-channel and the second sub-channel.

公开(公告)号：US10517142B2

公开(公告)日：2019-12-24

申请号：US16060398

申请日：2016-12-12

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04L5/00 ,  H04W80/02 ,  H04W84/12 ,  H04W72/04 ,  H04W74/00 ,  H04W74/04 ,  H04W12/06 ,  H04W74/08

Abstract: A method for transmitting a frame by a STA in a wireless LAN system according to an embodiment of the present invention may comprise: receiving a first frame from an AP; determining, on the basis of the first frame, a TXOP duration value to be included in a SIG field of a second frame that the STA is to transmit; and transmitting the second frame, in determining the TXOP duration value, the STA calculates a residual TXOP duration that may retain after the second frame is transmitted, on the basis of a TXOP duration indicated through the first frame, and when the residual TXOP duration is not a multiple of a granularity of a time unit used by the SIG field, the STA approximates the residual TXOP duration to be a first TXOP duration value which is a multiple of the granularity.