公开(公告)号：US10530524B2

公开(公告)日：2020-01-07

申请号：US15532049

申请日：2015-05-19

Applicant: LG ELECTRONICS INC.

Inventor： Suhwook Kim ,  Kiseon Ryu ,  Jinyoung Chun ,  Wookbong Lee ,  Jeongki Kim ,  Hangyu Cho

IPC: H04L1/00 ,  H04L1/16 ,  H04L5/00 ,  H04W72/04 ,  H04L21/00 ,  H04W84/12 ,  H04L1/12

Abstract: Disclosed are a method and a device for recovering an error without the retransmission of a data frame in a wireless LAN. The method for recovering an error in a wireless LAN may comprise the steps in which: a sender STA transmits a data frame to a receiver STA; if the sender STA does not receive a block ACK frame of the data frame from the receiver STA, the sender STA determines the reason for the non-reception of the data frame; if the sender STA determines that the reason for the non-reception of the data frame is the failure of transmission of the block ACK frame after the receiver STA receives the data frame, the sender STA transmits a PBAR data frame to the receiver STA; and the sender STA receives a PBAR block ACK frame from the receiver STA as a response to the PBAR data frame.

公开(公告)号：US10477451B2

公开(公告)日：2019-11-12

申请号：US15582425

申请日：2017-04-28

Applicant: LG ELECTRONICS INC.

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

IPC: H04W40/24 ,  H04W74/00 ,  H04W84/12 ,  H04W88/08 ,  H04W88/02

Abstract: According to an embodiment of the present specification, a method for accessing a wireless medium in a wireless local area network (LAN) system includes: receiving, by a wireless device, from an access point (AP) a packet including identification information indicating a receiving device which solicits a response frame, wherein the identification information is information included in a physical layer (PHY) header of the packet, the packet includes a broadcast frame, and the broadcast frame includes duration information indicating a time for deferring the access to the wireless medium; and if the wireless device is not the receiving device indicated by the identification information, setting, by the wireless device, a network allocation vector (NAV) on the basis of the duration information.

公开(公告)号：US10349288B2

公开(公告)日：2019-07-09

申请号：US15316138

申请日：2015-01-27

Applicant: LG ELECTRONICS INC.

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

IPC: H04W24/02 ,  H04L5/00 ,  H04W28/02 ,  H04W72/12 ,  H04W72/04 ,  H04W84/12

Abstract: A method and device for receiving a frame are disclosed. The method for receiving a frame over a wireless LAN may include: transmitting, by an access point (AP), an uplink transmission scheduling frame to a plurality of stations (STA); receiving, by the AP, a sync PPDU in response to the uplink transmission scheduling frame from each of the plurality of STAs; transmitting, by the AP, an adjustment frame, including adjustment information determined based on the sync PPDU, to the plurality of STAs; receiving, by the AP, the uplink frame transmitted based on the adjustment information by each of the plurality of STAs over an overlap time resource; and transmitting, by the AP, an ACK frame of the uplink frame to each of the plurality of STAs.

公开(公告)号：US10277368B2

公开(公告)日：2019-04-30

申请号：US15473528

申请日：2017-03-29

Applicant: LG ELECTRONICS INC.

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

IPC: H04W84/12 ,  H04L5/00 ,  H04W74/00 ,  H04W74/02

Abstract: According to an embodiment of the present specification, a method for transmitting an uplink frame in a wireless local area network (WLAN) system and performed by a user station (STA) includes: receiving from an access point (AP) a trigger frame comprising association identifier information for orthogonal frequency division multiple access (OFDMA)-based random access and allocation information indicating a resource unit, wherein the association identifier information indicates any one of a first value irrelevant to whether being associated with the AP, a second value for a first STA group associated with the AP, and a third value for a second STA group un-associated with the AP; and performing a countdown operation according to the association identifier information based on a backoff value which is set in a backoff counter of the user STA in order to transmit the uplink frame.

公开(公告)号：US10225061B2

公开(公告)日：2019-03-05

申请号：US15319477

申请日：2015-01-28

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/26 ,  H04L1/18 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W84/12 ,  H04W88/08

Abstract: Disclosed are a method and an apparatus for receiving a frame. A method for receiving a frame in a wireless LAN comprises the steps of: an AP transmitting, to a plurality of STAs, a downlink PPDU including downlink data for each of the plurality of STAs, through a plurality of channels; and the AP receiving, from each of the plurality of STAs, a plurality of block ACK frames transmitted based on a block ACK transmission control field, wherein the downlink PPDU includes the block ACK transmission control field, and wherein each of the plurality of block ACK frames may include ACK information related to downlink data.

公开(公告)号：US10187851B2

公开(公告)日：2019-01-22

申请号：US15315702

申请日：2015-02-26

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02 ,  H04W84/12

Abstract: Disclosed are a method and a device for operation based on a power save mode in a WLAN. The method for operation based on a power save mode may comprise steps in which: an STA, which has been switched to an awake state, transmits a PS-poll frame to an AP on the basis of the transmission cycle of a beacon frame; the STA receives an ACK frame from the AP in response to the PS-poll frame; after receiving the ACK frame, the STA overhears a different BSS frame; and within a preset time upon overhearing the different BSS frame, the STA determines whether or not to maintain the awake state on the basis of whether or not a power management control frame has been transmitted from the AP.

公开(公告)号：US10128988B2

公开(公告)日：2018-11-13

申请号：US14912862

申请日：2014-04-29

Applicant: LG ELECTRONICS INC.

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

IPC: H04L1/18 ,  H04L5/00 ,  H04W84/12

Abstract: Disclosed are a method and an apparatus for reporting information about a transmission failure frame. The method for reporting information about a transmission failure frame in a wireless LAN may comprise the steps of: creating, by an STA, the retransmission frame includes information about the transmission failure frame, the information about the transmission failure frame includes timestamp information and duration information, the timestamp information includes information about the transmission start time of the transmission failure frame, and the duration information includes information about the transmission period of the transmission failure frame.

公开(公告)号：US10117272B2

公开(公告)日：2018-10-30

申请号：US15125083

申请日：2015-03-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04W4/00 ,  H04L12/26 ,  H04W74/08 ,  H04L5/00 ,  H04W72/04 ,  H04W84/12 ,  H04W16/28 ,  H04W88/08 ,  H04W72/12

Abstract: The present disclosure relates to a wireless communication system, and in particular to a data transmission operation of an AP in a wireless LAN system. To this end, the AP may obtain information on a STA located at an overlapping basic service set (OBSS) from among STAs connected to the AP, and determines, based thereon, (1) whether to transmit data from the AP through a downlink oriented channel or a general channel different from the downlink oriented channel, or (2) whether to use one or more of a distributed coordination function (DCF) procedure and an enhanced distributed channel access (EDCA) procedure.

公开(公告)号：US10104617B2

公开(公告)日：2018-10-16

申请号：US15112665

申请日：2014-11-20

Applicant: LG ELECTRONICS INC.

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

IPC: H04W4/00 ,  H04W52/02 ,  H04W84/12

Abstract: A power save mode-based operating method and device in a WLAN are disclosed. The power save mode-based operating method in the WLAN may include: transmitting, by an STA, a first trigger frame to an AP; receiving, by the STA, a downlink frame transmitted by the AP based on the first trigger frame on a first service section; receiving, by the STA, traffic indication information from the AP on a second service section after the reception of the downlink frame; determining, by the STA, the presence or absence of a pending downlink frame at the AP based on the traffic indication information on the second service section; and determining, by the STA, a power saving mode based on the presence or absence of the pending downlink frame.

公开(公告)号：US10098145B2

公开(公告)日：2018-10-09

申请号：US15259756

申请日：2016-09-08

Applicant: Seoul National University of Technology Center for Industry Collaboration ,  LG ELECTRONICS INC.

Inventor： Jihoon Yun ,  Sanghyun Kim ,  Suhwook Kim

IPC: H04W4/00 ,  H04W74/00 ,  H04W48/10 ,  H04W74/02 ,  H04W84/12 ,  H04W48/12

Abstract: Provided are a method and a device for transmitting and receiving a traffic stream in a wireless local area network (WLAN) system. Specifically, the device broadcasts a beacon frame including allocation information on a contention-free period (CFP) and allocation information on a contention period (CP) to a station (STA) and transmits a downlink traffic stream to the STA or receives an uplink traffic stream from the STA, based on the allocation information on the CFP. The allocation information on the CFP indicates that the downlink traffic stream is transmitted without performing a clear channel assessment (CCA) during the CFP and indicates that the uplink traffic stream is received with performing a CCA during the CFP.