公开(公告)号：US20190124526A1

公开(公告)日：2019-04-25

申请号：US16091514

申请日：2017-03-03

Applicant: LG ELECTRONICS INC.

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

IPC: H04W24/02

Abstract: Disclosed is a signal processing method for changing an operating mode for transmitting a PPDU in a wireless LAN system. Specifically, a first station transmits, to a second station, the number of spatial streams supported by the first station, and a first instructional information instructing a change of the operating mode indicating a channel bandwidth. The first station applies the first instructional information after receiving an ACK therefor. The first instructional information comprises an operating mode indicator for indicating whether the operating mode is a receive operating mode (ROM) or a transmit operating mode (TOM).

公开(公告)号：US20190110315A1

公开(公告)日：2019-04-11

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 ,  H04L1/18 ,  H04L5/00 ,  H04W72/12 ,  H04W28/06

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：US20180375632A1

公开(公告)日：2018-12-27

申请号：US16062574

申请日：2016-12-09

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04L1/16 ,  H04W72/04

CPC classification number: H04L5/0053 ,  H04B7/0452 ,  H04L1/1614 ,  H04L5/0023 ,  H04L5/0091 ,  H04W72/0406 ,  H04W72/0446 ,  H04W84/12

Abstract: Disclosed is a method by which an operating station (STA) transmits a signal in a multiple user (MU) scheme in a wireless LAN (WLAN) system. In the present method, the STA configures a wireless frame, which includes a data field for data transmission and a signaling (SIG) field including control information, wherein the SIG field includes a SIG A field, which includes bandwidth information indicating the whole bandwidth having a bandwidth of 2n times that of 20 MHz, and a SIG B field, which includes user specific information. Here, the bandwidth information of the SIG A field additionally indicates whether the whole bandwidth includes one or more 20 MHz bands (null channel), which are not used in the data transmission.

公开(公告)号：US20180324859A1

公开(公告)日：2018-11-08

申请号：US15766773

申请日：2016-10-26

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W74/08 ,  H04L1/00 ,  H04W12/06 ,  H04W48/16 ,  H04W8/26

CPC classification number: H04W74/0816 ,  H04L1/0003 ,  H04W8/26 ,  H04W12/06 ,  H04W48/16 ,  H04W74/00 ,  H04W74/08 ,  H04W84/12

Abstract: A method for updating a network allocation vector (NAV) by a station (STA) in a wireless LAN system according to an embodiment of the present invention comprises the steps of: receiving a frame; and when the duration of the frame is greater than the value of an NAV of the STA, updating the NAV of the STA, wherein the duration is indicated by each of a signal (SIG) field of a physical layer and a header of an MAC layer in the frame, the duration indicated by the physical layer has a larger granularity of a time unit than that of the duration indicated by the MAC layer, and the STA updates the NAV through the duration having the larger granularity, indicated by the physical layer, when the duration indicated by the MAC layer cannot be obtained.

公开(公告)号：US20180324840A1

公开(公告)日：2018-11-08

申请号：US15772799

申请日：2017-01-16

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W72/12 ,  H04L1/16

CPC classification number: H04W72/1289 ,  H04B7/0452 ,  H04L1/00 ,  H04L1/16 ,  H04L5/0055 ,  H04L5/0092 ,  H04L27/2602 ,  H04L27/2646 ,  H04W84/12

Abstract: Disclosed is a method for transmitting an acknowledgement signal in response to downlink data by a station (STA) in a wireless local area network (WLAN) system. To this end, the STA receives a downlink physical protocol data unit (PPDU) including a control information subfield for uplink scheduling information and downlink data from an access point (AP) and transmits, to the AP, an uplink PPDU including an acknowledgement signal in response to the downlink data according to the uplink scheduling information. In this case, the control information subfield may include length information of the uplink PPDU, resource unit (RU) allocation information for the uplink PPDU, modulation and coding scheme (MCS) information for the uplink PPDU, transmit power of the AP, and target receive signal strength indicator (RSSI) information of the AP.

公开(公告)号：US20180317235A1

公开(公告)日：2018-11-01

申请号：US15769323

申请日：2016-10-20

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/08 ,  H04W74/08

Abstract: According to one embodiment of the present specification, a method for transmitting a trigger frame for requesting uplink data to be received through an wireless resource individually configured in an overlapped time duration from a plurality of terminals in a wireless LAN system, comprises: a step for receiving, by an access point, a first buffer state frame from a first terminal, wherein the first buffer state frame includes first QoS information of first uplink data; a step for receiving, by the access point, a second buffer state frame from a second terminal, wherein the second buffer state frame includes second QoS information of second uplink data; a step for determining, by the access point, a first primary AC for a trigger frame on the basis of the first QoS information and the second QoS information, wherein the access point includes a plurality of AP buffers for downlink data to be transmitted to a plurality of terminals; and a step for transmitting, by the access point, the trigger frame through the downlink buffer corresponding to the determined first primary AC among the plurality of AP buffers.

公开(公告)号：US20180302924A1

公开(公告)日：2018-10-18

申请号：US15767344

申请日：2016-10-26

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W74/08

Abstract: The present document relates to a method for performing random access in a wireless LAN system and an apparatus therefor. To this end, a station (STA) may: receive, from an AP, a first trigger frame for assigning at least one of multiple resource units (RUs) for random access; randomly select one of the at least one RU for random access when a first counter, which is set for the STA, becomes 0; and when it is determined that an uplink frame cannot be transmitted through the randomly selected RU, reselect an RU on the basis of a second trigger frame subsequent to the first trigger frame, wherein, in reselecting the RU, the STA may randomly set the first counter again and delay the reselection of the RU on the basis of the first counter which has been randomly set again.

公开(公告)号：US20180288743A1

公开(公告)日：2018-10-04

申请号：US15562400

申请日：2015-12-04

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04W74/08

CPC classification number: H04W72/04 ,  H04L1/1614 ,  H04L5/0094 ,  H04W74/006 ,  H04W74/06 ,  H04W74/0833 ,  H04W76/10 ,  H04W84/12

Abstract: A method for a station (STA) not having an association identifier (AID) allocated thereto transmitting a signal in a wireless LAN system, according to one embodiment of the present invention, comprises the steps of: transmitting a first frame through at least one resource among resources indicated by a trigger frame; and receiving a multi-STA block Ack (M-BA) frame as a reply to the first frame, wherein, if in the M-BA frame a MAC address of the STA that is different from a first information is detected from at least a part of a first field reserved for the first information, an N-bit of a second field preceding the first field is set as a temporary AID of the STA.

公开(公告)号：US20180279362A1

公开(公告)日：2018-09-27

申请号：US15542333

申请日：2016-01-07

Applicant: LG ELECTRONICS INC.

Inventor： Hyeyoung CHOI ,  Kiseon RYU ,  Jeongki KIM ,  Suhwook KIM

IPC: H04W74/04 ,  H04W72/12

CPC classification number: H04W74/04 ,  H04W48/12 ,  H04W48/16 ,  H04W72/1263 ,  H04W84/12

Abstract: A method for transmitting and receiving a frame by an access point (AP) in a wireless communication system, according to an embodiment of the present invention, comprises the steps of: determining two or more STAs for performing multi-user (MU) transmission; determining a delivery traffic indication map (DTIM) for transmitting a parameter related to a trigger frame with respect to each of the two or more STAs; transmitting the parameter related to the trigger frame by means of the DTIM; and receiving from the two or more STAs an MU frame in time-frequency resources which are indicated in the parameter related to the trigger frame.

公开(公告)号：US20180249503A1

公开(公告)日：2018-08-30

申请号：US15750820

申请日：2016-08-12

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W74/08 ,  H04W72/12

CPC classification number: H04W74/0816 ,  H04W72/12 ,  H04W84/12

Abstract: A method for performing network allocation vector (NAV) operation by a station (STA) in a wireless LAN system, according to an embodiment of the present invention, comprises the steps of: receiving a first frame; and configuring NAV in accordance with basic service set (BSS) of the first frame, wherein the first frame is other BSS (OBSS) frame. If a received signal strength indicator (RSSI) is lower the OBSS packet detection (PD) level, an STA drops the OBSS frame without configuration of the NAV. And if second frame transmission of another STA following the OBSS frame is scheduled, the STA can defer the OBSS frame drop even if the RSSI is lower than the OBSS PD level.