公开(公告)号：US20180138959A1

公开(公告)日：2018-05-17

申请号：US15567073

申请日：2016-04-15

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Kiseon RYU ,  Hangyu CHO ,  Wookbong LEE ,  Jinsoo CHOI

IPC: H04B7/06

Abstract: According to an embodiment of present invention, a sounding method for an STA (Station) to transmit feedback information of a downlink (DL) channel state in a WLAN (Wireless LAN) system according to one embodiment of the present invention comprises receiving an NDPA (NDP announcement) frame that notifies of transmission of an NDP (Null Data Packet) frame, receiving the NDP frame, receiving a trigger frame including resource allocation information allocated to the STA, generating channel state information on the basis of a training field included in the NDP frame; and performing uplink (UL) multi-user (MU) transmission of the feedback frame including the channel state information by using a frequency resource indicated by the resource allocation information.

公开(公告)号：US20180132109A1

公开(公告)日：2018-05-10

申请号：US15569035

申请日：2015-12-04

Applicant: LG ELECTRONICS INC.

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

IPC: H04W16/10 ,  H04W72/04 ,  H04W76/20 ,  H04W72/12

CPC classification number: H04W16/10 ,  H04L1/00 ,  H04L1/0016 ,  H04L1/0025 ,  H04L27/2602 ,  H04W28/06 ,  H04W52/283 ,  H04W52/34 ,  H04W72/0473 ,  H04W72/1205 ,  H04W76/20

Abstract: A method for receiving, by a station (STA), a signal in a wireless LAN system comprises: a step of receiving a frame which includes a SIG-A field including MCS information for a SIG-B field, and the SIG-B field encoded on the basis of any one MCS set among from multiple MCS sets; and a step of decoding the SIG-B field on the basis of the MCS information included in the SIG-A field, wherein a specific value in the MCS information indicating a first MCS level of a first MCS set from among the multiple MCS sets is re-used to indicate a second MCS level of a second MCS set, and which MCS level of the first MCS level and the second MCS level indicated by the specific value is set in the SIG-B field is implicitly indicated by a status of a channel on which the frame is received.

公开(公告)号：US20170339692A1

公开(公告)日：2017-11-23

申请号：US15329211

申请日：2015-07-03

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Kiseon RYU ,  Wookbong LEE ,  Hangyu CHO

IPC: H04W72/04 ,  H04L5/00 ,  H04L1/00 ,  H04W88/02 ,  H04W84/12

CPC classification number: H04W72/0446 ,  H04L1/0003 ,  H04L1/1614 ,  H04L1/1621 ,  H04L5/0007 ,  H04L5/0055 ,  H04L27/2602 ,  H04W72/0413 ,  H04W84/12 ,  H04W88/02

Abstract: Disclosed in the present invention are a method for transmitting a frame in a wireless communication system and a device therefor. Specifically, the method for transmitting a frame in a wireless communication system comprises a step in which a station (STA) transmits a frame comprising a legacy-short training field (L-STF), a legacy-long training field (L-LTF), and a signal (SIG) field, wherein the SIG field may comprise a trigger indication and a cascade indication, the trigger indication indicating whether the frame is a trigger frame comprising configuration information of an uplink multi-user (MU) data frame, and the cascade indication indicating whether the frame comprises a medium access control (MAC) frame.

公开(公告)号：US20170331587A1

公开(公告)日：2017-11-16

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 ,  H04W84/12

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：US20170311310A1

公开(公告)日：2017-10-26

申请号：US15517486

申请日：2015-10-13

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04W28/02 ,  H04L5/00 ,  H04W84/12 ,  H04W88/08

CPC classification number: H04W72/0413 ,  H04L5/0037 ,  H04L5/0055 ,  H04W28/0278 ,  H04W84/12 ,  H04W88/08

Abstract: Disclosed is a method and device for allocating uplink transmission resources on the basis of buffer status information in a wireless LAN. The method for allocating uplink transmission resources on the basis of buffer status information in a wireless LAN comprises: a step for transmitting, by an AP, a downlink frame containing buffer status report request information to multiple STAs; a step for receiving, by the AP, a plurality of uplink frames on superposed time resources from the multiple STAs, wherein the plurality of uplink frames contain a plurality of pieces of buffer status information of the multiple STAs that are generated on the basis of the buffer status report request information; and a step for determining, by the AP, uplink transmission resources to be allocated to the multiple STAs on the basis of the plurality of pieces of buffer status information.

公开(公告)号：US20170310424A1

公开(公告)日：2017-10-26

申请号：US15516325

申请日：2015-10-01

Applicant: LG ELECTRONICS INC.

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

IPC: H04L1/16 ,  H04B7/06 ,  H04W72/04 ,  H04L1/00 ,  H04L29/06 ,  H04B7/0413 ,  H04W84/12

CPC classification number: H04L1/16 ,  H04B7/0413 ,  H04B7/063 ,  H04L1/0025 ,  H04L1/0027 ,  H04L29/06 ,  H04W72/0413 ,  H04W72/0466 ,  H04W84/12

Abstract: Disclosed is a downlink (DL) multi-user (MU) transmission method of an AP device in a wireless local area network (WLAN) system including generating a DL MU physical protocol data unit (PPDU) including a physical preamble and a data field, the data field including at least one MAC protocol data unit (MPDU), the at least one MPDU including a MAC header and a MAC frame body, and the MAC header including ACK indication information for uplink (UL) MU transmission of an ACK frame as a response to data transmitted through the data field, and transmitting the DL MU PPDU.

公开(公告)号：US20170302417A1

公开(公告)日：2017-10-19

申请号：US15510212

申请日：2015-07-27

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Kiseon RYU ,  Wookbong LEE ,  Jinsoo CHO ,  Hangyu CHO

IPC: H04L5/00 ,  H04L27/26 ,  H04B7/04 ,  H04W84/12

CPC classification number: H04L5/0044 ,  H04B7/0452 ,  H04L5/0007 ,  H04L5/0032 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/26 ,  H04L27/2613 ,  H04L27/2628 ,  H04W84/12

Abstract: According to an embodiment of the present invention, a data transmission method for a station (STA) device in a wireless LAN (WLAN) system includes the steps of: generating a physical protocol data unit (PPDU) that includes a physical preamble and a data field; and transmitting the PPDU. Therein: the whole transmission band of the PPDU is made up of a plurality of resource units in a frequency region; each of the plurality of resource units is configured from a preset number of tones; resource units, from among the plurality of resource units, that have the same logical index are allocated to the same STA; and the resource units that have the same logical index may be discontinuously located in the frequency region.

公开(公告)号：US20170273140A1

公开(公告)日：2017-09-21

申请号：US15505607

申请日：2015-08-21

Applicant: LG ELECTRONICS INC.

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

IPC: H04W84/12 ,  H04W74/00 ,  H04L12/801 ,  H04W72/04 ,  H04W28/02 ,  H04W88/10 ,  H04W74/08

CPC classification number: H04W84/12 ,  H04L47/10 ,  H04L47/12 ,  H04W28/021 ,  H04W28/0278 ,  H04W72/0413 ,  H04W74/004 ,  H04W74/085 ,  H04W74/0866 ,  H04W88/10

Abstract: A method and an apparatus for triggering uplink data in a wireless LAN are disclosed. A method for receiving uplink data in a wireless LAN may comprise: a step in which an access point (AP) transmits a trigger frame for random connection; and a step in which the AP receives at least one buffer status report frame from at least one STA on a random connection transmission opportunity (TXOP) which is set on the basis of the trigger frame for random connection, wherein the random connection TXOP is allocated for a channel access attempt for transmitting the buffer status report frame of each of a plurality of non-specific STAs, and each of the at least one STA may be an STA which succeeds in the channel access among the plurality of non-specific STAs.

公开(公告)号：US20170238286A1

公开(公告)日：2017-08-17

申请号：US15502973

申请日：2015-08-05

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Kiseon RYU ,  Wookbong LEE ,  Jinsoo CHOI ,  Dongguk LIM ,  Hangyu CHO

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L1/00 ,  H04L1/16 ,  H04L5/0023 ,  H04L5/0055 ,  H04L5/0064 ,  H04L5/0091 ,  H04L27/0008 ,  H04W72/0413 ,  H04W72/0446

Abstract: The present invention discloses a method and device for downlink multi-user (DL MU) transmission in a wireless communication system. In particular, the method for downlink multi-user data transmission in the wireless communication system includes the steps of receiving, by a station (STA), a DL MU data frame from an access point (AP) and transmitting, by the STA, an acknowledgement (ACK) frame in response to the DL MU data frame, wherein a plurality of ACK frames transmitted by a plurality of STAs in response to the DL MU data frame is multiplexed to configure an uplink multi-user (UP MU) ACK frame, and the time and/or size of a frequency resource at which the ACK frame is transmitted may be determined according to the level of a modulation and coding scheme (MCS) that is applied to the ACK frame.

公开(公告)号：US20170171878A1

公开(公告)日：2017-06-15

申请号：US15323725

申请日：2015-04-03

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Wookbong LEE ,  Kiseon RYU ,  Hangyu CHO ,  Jinsoo CHOI ,  Dongguk LIM

IPC: H04W72/12 ,  H04W72/04

CPC classification number: H04W72/1268 ,  H04B7/00 ,  H04B7/0404 ,  H04B7/0452 ,  H04B7/0617 ,  H04L1/08 ,  H04L1/1614 ,  H04L1/1621 ,  H04L1/1685 ,  H04L1/1854 ,  H04L5/0055 ,  H04L5/0057 ,  H04L27/26 ,  H04L27/2602 ,  H04W72/0453 ,  H04W84/12

Abstract: Disclosed are a method for transmitting multi-user uplink data in a wireless communication system and an apparatus therefore. In detail, a method for transmitting multi-user uplink data in a wireless communication system includes: receiving, by a station (STA), a UL MU scheduling frame for initiating uplink multi-user (UL MU) transmission from an access point (AP); transmitting, by the STA, a UL MU data frame to the AP through a frequency band or a stream allocated by the UL MU scheduling frame; and receiving, by the STA, an acknowledge (ACK) frame from the AP in response to the UL MU data frame, wherein the UL MU scheduling frame may include protection duration information for protecting a UL MU procedure.