公开(公告)号：US10986660B2

公开(公告)日：2021-04-20

申请号：US16508237

申请日：2019-07-10

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung Chun ,  Kiseon Ryu ,  Wookbong Lee ,  Hangyu Cho

IPC: H04L12/50 ,  H04W72/12 ,  H04L5/00 ,  H04W72/04 ,  H04W74/00 ,  H04W74/08

Abstract: Disclosed is an uplink (UL) multi-user (MU) transmission method by a station (STA) in a wireless LAN (WLAN) system. The uplink multi-user transmission method by an STA in a WLAN system according to the present invention includes the steps of: receiving a trigger frame including resource unit allocation information for orthogonal frequency division multiple access (OFDMA) transmission; transmitting a UL MU physical protocol data unit (PPDU) frame, on the basis of frequency resource allocation information; and receiving an ACK frame for the UL MU PPDU.

公开(公告)号：US10932272B2

公开(公告)日：2021-02-23

申请号：US16400793

申请日：2019-05-01

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04L27/26 ,  H04L5/00 ,  H04W84/12

Abstract: The present document relates to a wireless communication system and, more specifically, to a method for flexibly supporting resource allocation in a wireless LAN system, and a method and an apparatus for signal transmission using the same. To this end, a first STA configures a radio frame comprising: a signaling (SIG) field including control information; and a data field in which data can be transmitted via a discontinuous channel or a channel having a bandwidth size that is supported by a legacy system. When the first STA transmits the configured radio frame to a second STA, the SIG field preferably comprises: information about a full bandwidth in which data can be transmitted via the data field; and null indicator information indicating a channel region of the full bandwidth that is not used in data transmission, or used channel indicator information indicating a channel region of the full bandwidth that is used in data transmission.

公开(公告)号：US10887916B2

公开(公告)日：2021-01-05

申请号：US16681772

申请日：2019-11-12

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W74/08 ,  H04L1/00 ,  H04W8/26 ,  H04W12/06 ,  H04W74/04 ,  H04B7/00 ,  H04W84/12 ,  H04W74/00 ,  H04W48/16

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：US10863545B2

公开(公告)日：2020-12-08

申请号：US16476257

申请日：2018-01-08

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu

IPC: H04W74/08 ,  H04W48/16 ,  H04W72/04 ,  H04W74/00

Abstract: According to one embodiment of the present invention, a method by which a station (STA) performs channel access in a wireless LAN system comprises the steps of: receiving, from an access point (AP), a first frame indicating whether to deactivate a basic service set (BSS) color; receiving a second frame including a signal (SIG)-A field having a transmission opportunity (TXOP) period subfield and a BSS color subfield; and performing channel access, wherein the STA can perform the channel access by invoking an extended inter-frame space (EIFS) operation when the BSS color is deactivated by the first frame, but the BSS color subfield of the second frame includes the deactivated BSS color and the TXOP period subfield of the second frame includes a valid TXOP period value.

公开(公告)号：US10785772B2

公开(公告)日：2020-09-22

申请号：US15505521

申请日：2015-08-21

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04L27/26 ,  H04L5/00 ,  H04L1/16 ,  H04L1/00 ,  H04W84/12

Abstract: Disclosed are an uplink transmission method in a wireless communication system and an apparatus therefor. In detail, the method for a uplink (UL) multi-user (MU) transmission by a station (STA) in a wireless communication system includes receiving a trigger frame including frequency resource allocation information in a subband unit for orthogonal frequency division multiple access (OFDMA) transmission from an access point (AP), and transmitting a UL MU PPDU based on the frequency resource allocation information, wherein the UL MU PPDU includes a high efficiency-short training field (HE-STF), a high-efficiency-long training field (HE-LTF), and a data field, and the HE-STF, the HE-LTF, and the data field are transmitted in a subband indicated by the frequency resource allocation information.

公开(公告)号：US10743369B2

公开(公告)日：2020-08-11

申请号：US16091089

申请日：2017-04-04

Applicant: LG ELECTRONICS INC.

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

IPC: H04W84/12 ,  H04W8/24 ,  H04W72/04 ,  H04W74/00 ,  H04B7/0452 ,  H04L5/00 ,  H04B7/06 ,  H04L27/26 ,  H04B7/0404

Abstract: The present specification proposes a signal processing method for changing an operating mode for transmitting a PPDU in a wireless LAN system. Specifically, a first station receives, from the second station, indication information which indicates a change in an operating mode indicating a receiving channel bandwidth and a number of spatial streams supported by a second station during a TXOP interval. When the number of spatial streams and the receiving channel bandwidth decrease, the first station configures a PPDU for the second station by using the indication information after transmitting an ACK for the indication information. When the number of spatial streams and the receiving channel bandwidth increase, the first station configures a PPDU for the second station by using the indication information during a subsequent TXOP interval of the TXOP interval.

公开(公告)号：US10735151B2

公开(公告)日：2020-08-04

申请号：US16374565

申请日：2019-04-03

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：US10708958B2

公开(公告)日：2020-07-07

申请号：US15952085

申请日：2018-05-15

Applicant: LG ELECTRONICS INC.

Inventor： Kiseon Ryu ,  Suhwook Kim ,  Jeongki Kim ,  Jinsoo Choi

IPC: H04W74/08 ,  H04W72/04 ,  H04W76/11 ,  H04W74/00 ,  H04W8/20 ,  H04W84/12

Abstract: A method for transmitting a trigger frame performed by a first wireless terminal may include, configuring a trigger frame of a basic type including a plurality of user information fields for an OFDMA-based random access backoff procedure by a plurality of second wireless terminals, wherein each of the plurality of user information fields includes resource allocation information for a RA resource unit allocated for the OFDMA-based random access backoff procedure, identifier information indicating that the RA resource unit is allocated for the OFDMA-based random access backoff procedure, and TID aggregation limit information indicating the maximum number of TIDs allowed for an A-MPDU generated by a second wireless terminal that has completed the OFDMA random access backoff procedure based on the trigger frame, and wherein the TID aggregation limit information is set to 0 or 1; and transmitting the trigger frame to the plurality of second wireless terminals.

公开(公告)号：US10609642B2

公开(公告)日：2020-03-31

申请号：US15769702

申请日：2016-11-18

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W52/02 ,  G06F1/3287 ,  G06F1/3209 ,  H04B7/26 ,  H04W84/12

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：US10595288B2

公开(公告)日：2020-03-17

申请号：US16321820

申请日：2017-05-17

Applicant: LG ELECTRONICS INC.

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

IPC: H04W74/08 ,  H04W74/00 ,  H04W56/00 ,  H04W84/12 ,  H04L27/26 ,  H04W28/26 ,  H04W72/04

Abstract: A method for transmitting a frame in a wireless LAN system according to the present embodiment comprises: a step of determining whether to transmit a first frame to an AP through an EDCA by comparing a time parameter indicating the time used for transmission of a wireless terminal with a predetermined allowable time; a step of summing up, to the time parameter, a first required time for transmission of the first frame; a step of receiving, from the AP, a trigger frame for multi-user uplink transmission; and a step of performing data processing for a second frame transmitted in response to the trigger frame, wherein a second required time for transmission of the second frame is not summed up to the time parameter.