公开(公告)号：US20190141747A1

公开(公告)日：2019-05-09

申请号：US16094168

申请日：2017-04-17

Applicant: LG ELECTRONICS INC.

Inventor： Saehee BANG ,  Kiseon RYU ,  Jeongki KIM ,  Hangyu CHO ,  Jinmin KIM

IPC: H04W74/08 ,  H04B7/0404 ,  H04W72/04

Abstract: A method for multi-user transmission in a wireless LAN system according to one embodiment of the present specification comprises the steps of: individually performing, by a STA including a first directional antenna and a second directional antenna, a first countdown procedure for the first directional antenna and a second countdown procedure for the second directional antenna according to a directional CCA operation for the first and second directional antennas; determining the first directional antenna as a primary antenna when the first countdown procedure is completed before the second countdown procedure; determining whether the second directional antenna is idle from a threshold time before a completion time point of the first countdown procedure to the completion time point; and transmitting multiple streams on the basis of the first and second directional antennas according to the result of the determination.

公开(公告)号：US20190116596A1

公开(公告)日：2019-04-18

申请号：US16218119

申请日：2018-12-12

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04W74/08 ,  H04W52/54 ,  H04W74/00

CPC classification number: H04W72/0453 ,  H04W52/14 ,  H04W52/146 ,  H04W52/54 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/0413 ,  H04W72/042 ,  H04W74/00 ,  H04W74/006 ,  H04W74/08 ,  H04W74/0808 ,  H04W74/0891 ,  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：US20190053134A1

公开(公告)日：2019-02-14

申请号：US15759083

申请日：2016-09-21

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Hangyu CHO

IPC: H04W48/16 ,  H04L25/02 ,  H04W74/08 ,  H04W84/12

CPC classification number: H04W48/16 ,  H04L25/0204 ,  H04W48/14 ,  H04W74/0891 ,  H04W84/12

Abstract: A method by which a station (STA) performs active scanning in a wireless LAN system, according to one embodiment of the present invention, comprises the steps of: setting, by the STA, a timer for maintaining a basic service set (BSS) configuration parameter set which has been acquired from an access point (AP) in the past; and when the AP is to be accessed before the time expires, transmitting to the AP, a probe request frame including an AP configuration sequence number (AP-CSN) indicating a version of the BSS configuration parameter set, wherein the STA sets the value of the timer for maintaining the BSS configuration parameter set on the basis of the length of the AP-CSN.

公开(公告)号：US20180351725A1

公开(公告)日：2018-12-06

申请号：US16039249

申请日：2018-07-18

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04L1/16 ,  H04L1/00 ,  H04W84/12

CPC classification number: H04L5/0055 ,  H04L1/0031 ,  H04L1/1614 ,  H04L1/1621 ,  H04L1/1685 ,  H04W84/12

Abstract: An ACK signal processing method that can be used in a wireless LAN system is proposed. Various information that can be used for a downlink MU PPDU for multiple receiving stations may be proposed, and, for example, in order to omit the re-transmission of the related art, information requesting an ACK or Block ACK corresponding to previously transmitted data may be included. If an immediate acknowledgement (ACK) frame fails to be received after the MU-PPDU is transmitted from the AP, a Block ACK may be requested. In this case, while a Block ACK is requested, a radio resource through which a Block ACK is delivered may be allocated.

公开(公告)号：US20180317173A1

公开(公告)日：2018-11-01

申请号：US15769702

申请日：2016-11-18

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W52/02

CPC classification number: H04W52/02 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/14

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：US20180254857A1

公开(公告)日：2018-09-06

申请号：US15756921

申请日：2016-09-01

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04L1/16 ,  H04L5/00

CPC classification number: H04L1/1621 ,  H04L1/1614 ,  H04L5/0055 ,  H04L5/0094 ,  H04L2001/0093 ,  H04W84/12

Abstract: Disclosed are a method and a device by which an access point (AP) transmits a block ACK (BA) signal for transmission data of a plurality of stations (STAs) in a wireless LAN (WLAN) system. To this end, an AP receives data from a plurality of STAs, and transmits a first multi-STA BA frame (M-BA frame) for the data received from the plurality of STAs, wherein the first M-BA frame includes a MAC header field, a BA control field, and a BA information field, a last N bit of the BA control field indicates at least one from among the number of pieces of BA information included in the first M-BA frame and information on a succeeding ACK frame, and N is set to 5 or more.

公开(公告)号：US20180242362A1

公开(公告)日：2018-08-23

申请号：US15751142

申请日：2016-08-10

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W74/08 ,  H04W74/00 ,  H04W24/10 ,  H04W48/16 ,  H04W84/12

CPC classification number: H04W74/0816 ,  H04W24/10 ,  H04W48/16 ,  H04W74/002 ,  H04W74/085 ,  H04W84/12

Abstract: Provided is a network allocation vector (NAV) operation method by a station (STA) operating in a wireless LAN (WLAN) system. An STA receiving a particular frame, if the frame is a frame for a basic service set (BSS) to which the corresponding STA belongs, determines whether or not a received signal strength indicator (RSSI) is higher than the first clear channel assessment (CCA) level and, if the corresponding frame is not a frame for a BSS to which the STA belongs, determines if the RSSI is higher than the second CCA level which is higher than the first CCA level. If the RSSI is higher than the first CCA level or the second CCA level, the STA updates NAV. If the received frame is a request to send (RTS) frame or a clear to send (CTS) frame, the received frame comprises additional information used for determining whether or not the RTS frame or the CTS frame is a frame for a BSS to which the STA belongs.

公开(公告)号：US20180220357A1

公开(公告)日：2018-08-02

申请号：US15747685

申请日：2016-08-05

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W48/02 ,  H04W48/08 ,  H04L5/00

CPC classification number: H04W48/02 ,  H04L1/00 ,  H04L1/0004 ,  H04L1/001 ,  H04L1/0073 ,  H04L1/1607 ,  H04L1/1614 ,  H04L1/1854 ,  H04L5/0048 ,  H04L5/0055 ,  H04W48/08 ,  H04W74/08 ,  H04W84/12

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：US20180212738A1

公开(公告)日：2018-07-26

申请号：US15745663

申请日：2016-01-26

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Kiseon RYU ,  Jeongki KIM ,  Hangyu CHO

IPC: H04L5/00 ,  H04L29/06

CPC classification number: H04L5/0055 ,  H04L1/1685 ,  H04L27/26 ,  H04L69/22 ,  H04W84/12

Abstract: A method for performing an uplink (UL) multi-user (MU) transmission performed by a station (STA) device in a Wireless LAN (WLAN) system according to an embodiment of the present invention may include receiving a Downlink (DL) MU Physical Protocol Data Unit (PPDU) including a physical preamble and a data field; and where the data field includes at least one Mac Protocol Data Unit (MPDU), where the at least one MPDU includes a trigger frame or a MAC header, where the trigger frame or the MAC header includes trigger information for a UL MU transmission of an ACK (Acknowledge) frame, and performing a UL MU transmission of the ACK frame in response to the DL MU PPDU based on the trigger information.

公开(公告)号：US20180192372A1

公开(公告)日：2018-07-05

申请号：US15785247

申请日：2017-10-16

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02

CPC classification number: H04W52/0229 ,  H04L43/10 ,  H04W40/244 ,  H04W72/0413 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/14 ,  Y02D70/142 ,  Y02D70/22

Abstract: Disclosed herein is a method for performing power management in a wireless LAN system and a wireless device using the same, wherein the method may include the steps of receiving, by a first wireless device, a beacon frame including a first time wake time (TWT) flow identifier (TWT FID) indicating a type of first recommendation frame authorized to be transmitted during a first TWT service period and a second TWT flow identifier (TWT FID) indicating a type of second recommendation frame authorized to be transmitted during a second TWT service period, from a second wireless device, after receiving the beacon frame, shifting, by the first wireless device, from an awake state to a doze state, and receiving, by the first wireless device, a change frame for changing the second TWT flow identifier during the first TWT service period from the second wireless device.