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.

公开(公告)号：US20180132178A1

公开(公告)日：2018-05-10

申请号：US15699971

申请日：2017-09-08

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02

CPC classification number: H04W52/0216 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/14 ,  Y02D70/142 ,  Y02D70/22

Abstract: A method for managing power of a wireless terminal in a wireless local area network (WLAN) system according to one embodiment includes: transmitting, by a first wireless terminal that switches between an awake state and a doze state based on a power save mode for power management, a target wake time (TWT) request frame for requesting first target beacon transmission time (TBTT) information, which indicates a reception time of a first beacon frame, and listen interval information, which indicates a reception interval for a subsequent beacon frame, to a second wireless terminal; receiving, by the first wireless terminal, a TWT response frame including the first TBTT information and the listen interval information from the second wireless terminal in response to the TWT request frame; switching, by the first wireless terminal, to the doze state after receiving the TWT response frame; switching, by the first wireless terminal, to the awake state according to the first TBTT information in order to receive the first beacon frame; and switching, by the first wireless terminal, to the doze state after receiving the first beacon frame.

公开(公告)号：US20180124806A1

公开(公告)日：2018-05-03

申请号：US15791157

申请日：2017-10-23

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W72/12 ,  H04W72/04

CPC classification number: H04W72/1205 ,  H04W72/0446 ,  H04W72/1278 ,  H04W74/0816 ,  H04W84/12

Abstract: According to one embodiment of the present invention, a method for a station (STA) to transmit a frame in a wireless local area network system includes setting a TXOP duration field and a UL flag and transmitting a high efficiency physical layer protocol data unit (HE PPDU) including the TXOP duration field and the UL flag. In this case, the STA sets the UL flag to a first value corresponding to uplink if the HE PPDU is addressed to an access point (AP). When the TXOP duration field is set to a special value other than a TXOP duration value for configuring a network allocation vector and the HE PPDU corresponds to a single user PPDU carrying an ready-to-send frame or a clear-to-send frame, the STA may set the UL flag to a second value corresponding to downlink, even if the HE PPDU is addressed to the AP.

公开(公告)号：US20180092032A1

公开(公告)日：2018-03-29

申请号：US15560092

申请日：2016-07-01

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02 ,  H04L5/00 ,  H04W74/08 ,  H04W74/00

CPC classification number: H04W52/0216 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/26 ,  H04L27/2613 ,  H04W74/006 ,  H04W74/0833 ,  H04W74/085 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/1262 ,  Y02D70/14 ,  Y02D70/142 ,  Y02D70/22

Abstract: A method for performing uplink Orthogonal Frequency Division Multiple Access (UL OFDMA) based random access to an Access Point (AP) by a Station (STA) in a Wireless Local Area Network (WLAN) system is proposed. For the purpose, the STA sets a random value within an OFDMA Contention Window (CWO) as an OFDMA Back-Off (OBO) value, receives a beacon frame from the AP, the beacon frame including transmission start time information of one or more Trigger Frames for Random Access (TF-Rs), decrements the OBO value based on reception of the one or more TF-Rs, and if the OBO value reaches 0, transmits a random access request frame in resources selected randomly from among resources allocated to the STA.

公开(公告)号：US20180035461A1

公开(公告)日：2018-02-01

申请号：US15550005

申请日：2016-01-22

Applicant: LG ELECTRONICS INC.

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

IPC: H04W74/08

CPC classification number: H04W74/0816 ,  H04W84/12

Abstract: Disclosed are a medium protection-based method and device for MU transmission in a wireless LAN. The medium protecting method for MU transmission in a wireless LAN can comprise the steps of: receiving, by an STA, an RTS frame transmitted on the basis of DL MU transmission by an AP; and determining, by the STA, whether to configure an NAV on the basis of an RA field of the RTS frame, wherein if the RTS frame is an MU RTS frame for acquiring MU TXOP, the RA field includes an RA control field and a plurality of RA simple identification fields, the MU TXOP indicates a time resource having a transmission right for DL MU transmission of downlink data, the RA control field includes information for indicating that the RTS frame is an MU RTS frame transmitted to acquire the MU TXOP, and each of the plurality of RA simple identification fields can include identification information of each of the plurality of STAs.

公开(公告)号：US20170374681A1

公开(公告)日：2017-12-28

申请号：US15537355

申请日：2016-10-04

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Jinyoung CHUN ,  Jinsoo CHOI ,  Suhwook KIM ,  Hangyu CHO

IPC: H04W74/08 ,  H04W16/02 ,  H04W52/02 ,  H04L29/08 ,  H04W84/12

Abstract: A method by which an access point (AP) supports multi-basic service sets (BSSs) in a wireless LAN system, according to one embodiment of the present invention, comprises the steps of: setting a plurality of BSS identifiers for each individual BSS belonging to the multi-BSSs; and transmitting a frame for notifying a station (STA) of the plurality of BSS identifiers set for each individual BSS, wherein the plurality of BSS identifiers include a first BSS identifier and a second BSS identifier, which has a length shorter than that of the first BSS identifier, and the first BSS identifier is set to different values for each individual BSS, but the second BSS identifier can be set to the same value for all of the multi-BSSs.

公开(公告)号：US20170367078A1

公开(公告)日：2017-12-21

申请号：US15533634

申请日：2015-12-15

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W72/04 ,  H04L5/00 ,  H04W84/12

CPC classification number: H04W72/042 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0092 ,  H04L27/26 ,  H04W72/0453 ,  H04W84/12

Abstract: An AP downlink multi-user transmission method in a wireless communication system, according to one embodiment of the present invention, comprises the steps of: generating a DL MU PPDU, wherein the DL MU PPDU comprises resource allocation information for uplink MU transmission by a station (STA); transmitting the DL MU PPDU to the STA; and, on the basis of the DL MU PPDU, receiving a UL MU PPDU generated by the STA, wherein the UL MU PPDU comprises a first part having a first IDFT/DFT cycle, and a second part having a second IDFT/DFT cycle that is four times the first IDFT/DFT cycle, wherein the first part may be received through at least one 20 MHz channel in a position corresponding to a frequency resource indicated by the resource allocation information, and the second part may be received by using the frequency resource indicated by the resource allocation information.

公开(公告)号：US20170359159A1

公开(公告)日：2017-12-14

申请号：US15524240

申请日：2015-11-30

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04W72/04 ,  H04W84/12

Abstract: The present document relates to a method for transmitting, by an access point, an ACK/NACK signal for transmission data from a plurality of stations (STA) in a WLAN system and a device for the same. To this end, the AP transmits a trigger frame to the plurality of stations STA, receives the data transmitted from the plurality of STA in response to the trigger frame, and transmits the ACK/NACK signal for the data received from the plurality of STA. In this process, the ACK/NACK signal may be transmitted in the form of a multi-user block ACK (M-BA) frame that is composed of a 242 tones unit.

公开(公告)号：US20170303309A1

公开(公告)日：2017-10-19

申请号：US15509149

申请日：2014-12-31

Applicant: LG ELECTRONICS INC.

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

IPC: H04W74/00 ,  H04W74/08

CPC classification number: H04W74/006 ,  H04W74/004 ,  H04W74/0816

Abstract: Provided is a method and apparatus for protecting a TXOP in a wireless communication system. The method for protecting a TXOP may comprise the steps of: receiving a trigger frame containing information on a first interval for an exchange of multiple clear-to-send (CTS) frames from a transmission station (STA) by a reception STA; and transmitting CTS frames to the transmission STA in the first interval by the reception STA.