公开(公告)号：US10454650B2

公开(公告)日：2019-10-22

申请号：US15563060

申请日：2016-02-24

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin Kim ,  Jeongki Kim ,  Dongguk Lim ,  Hangyu Cho

IPC: H04L5/00 ,  H04L27/26 ,  H04W52/24 ,  H04W16/28 ,  H04W72/04 ,  H04W74/08 ,  H04L27/00 ,  H04W84/12 ,  H04B7/0452

Abstract: Disclosed herein is a method for transmitting data performed by a station (STA) in a Wireless LAN (WLAN) system. The method for transmitting data performed by an STA device according to the present invention includes receiving a signal from a first STA of a first Basic Service Set (BSS); obtaining Endurable Interference Margin (EIM) information and transmission power information of the first STA from the reception signal; obtaining a Predicted Interference Power (PIP) using the transmission power information of the first STA; and comparing the EIM information with the PIP, and controlling a Clear Channel Assessment (CCA) level or a transmission power according to the comparison result.

公开(公告)号：US10433306B2

公开(公告)日：2019-10-01

申请号：US15467952

申请日：2017-03-23

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo Choi ,  Hangyu Cho ,  Dongguk Lim ,  Eunsung Park

IPC: H04W72/04 ,  H04W84/12

Abstract: It is proposed an example for mapping between a signal field and a data field used in a wireless local area network (LAN) system supporting a plurality of resource units (RUs). If a second channel (e.g., a 20 MHz band) is nullified and thus a physical layer protocol data unit (PPDU) is not transmitted, a signal field transmitted through a first channel may include allocation information regarding all data channels, and a signal field transmitted through the first channel is preferably duplicated on a third channel. In this case, a signal field transmitted through a fourth channel may include only allocation information for a data field corresponding to the fourth channel.

公开(公告)号：US10433258B2

公开(公告)日：2019-10-01

申请号：US15957357

申请日：2018-04-19

Applicant: LG ELECTRONICS INC.

Inventor： Seunghee Han ,  Dongcheol Kim ,  Sungho Moon ,  Hangyu Cho ,  Jinmin Kim ,  Hyunwoo Lee ,  Jaehoon Chung

IPC: H04W52/14 ,  H04L1/00 ,  H04L1/16 ,  H04W52/24 ,  H04W52/32 ,  H04W52/48 ,  H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12 ,  H04L5/14 ,  H04W52/36

Abstract: A wireless communication system is disclosed. Disclosed herein are methods for transmitting a physical uplink control channel (PUCCH) signal in a wireless communication system, which includes setting transmit power for the PUCCH signal, and an apparatus thereof. If the PUCCH signal is transmitted on a subframe configured for a scheduling request (SR), the PUCCH signal includes one or more hybrid automatic repeat request acknowledgement (HARQ-ACK) bits and an SR bit. When determining the transmit power for the PUCCH, the SR bit is selectively considered depending on whether or not a transport block for an uplink shared channel (UL-SCH) is present in the subframe.

公开(公告)号：US10432364B2

公开(公告)日：2019-10-01

申请号：US15505906

申请日：2015-08-21

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Jinyoung Chun ,  Hangyu Cho ,  Jinsoo Choi ,  Kiseon Ryu

IPC: H04L5/00 ,  H04J11/00 ,  H04W74/00 ,  H04W84/12

Abstract: The present document relates to a wireless communication system and, more particularly, to a method for performing efficient signaling for a reserved sub-band in a wireless LAN system, and a method and an apparatus for signal transmission using the same. To this end, an STA provides resource allocation information for transmitting data to a plurality of STAs using an orthogonal frequency divisional multiple access (OFDMA) or multiple user MIMO (MU-MIMO) method; transmits the resource allocation information to the plurality of STAs; and transmits data to the plurality of STAs according to the resource allocation information. The entire frequency band may include a sub-band which is not used for the data transmission, and it is preferable that the resource allocation information includes a resource allocation bitmap having a form common to the plurality of STAs and indication information which informs a sub-band, from among the entire frequency band, which is not used for the data transmission.

公开(公告)号：US10432354B2

公开(公告)日：2019-10-01

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：US10405338B2

公开(公告)日：2019-09-03

申请号：US15527692

申请日：2015-11-30

Applicant: LG ELECTRONICS INC.

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

IPC: H04L12/28 ,  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：US10397916B2

公开(公告)日：2019-08-27

申请号：US15574777

申请日：2016-05-20

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Kiseon Ryu ,  Hangyu Cho

IPC: H04W72/04 ,  H04W84/12 ,  H04W28/18 ,  H04W74/00 ,  H04W74/08

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：US10383093B2

公开(公告)日：2019-08-13

申请号：US15516007

申请日：2016-01-29

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Wookbong Lee ,  Kiseon Ryu ,  Jinsoo Choi ,  Hangyu Cho

IPC: H04W72/04 ,  H04B7/0413 ,  H04L5/00 ,  H04W84/12 ,  H04L27/26 ,  H04W88/08

Abstract: The present document relates to a method for allocating resources for multi-user or multi-station (STA) data transmission in a wireless LAN system, and an apparatus therefor. To this end, an AP generates a frame including a signaling field and a data field, wherein the signaling field includes a first signaling field (SIG A field) comprising common control information for a plurality of STAs and a second signaling field (SIG B field) comprising user specific control information for each of the plurality of STAs, the second signaling field also comprising data transmission resource allocation information for each of the plurality of STAs. The AP transmits the thus generated frame to the plurality of STAs. If the frame is transmitted with a bandwidth of 40 MHz or greater, the second signaling field transmits independent control information in two adjacent 20 MHz bands, and the second signaling field, transmitted through a specific 20 MHz band, comprises data transmission resource allocation information within the specific 20 MHz band.

公开(公告)号：US10375708B2

公开(公告)日：2019-08-06

申请号：US15517507

申请日：2015-10-06

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo Choi ,  Hangyu Cho ,  Wookbong Lee

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

Abstract: An access point device and method for: generating and transmitting a physical layer protocol data unit (PPDU) including a plurality of resource units on a bandwidth, where the plurality of resource units includes a first tone unit and a second tone unit. The first tone unit includes a total of 26 tones, where 2 pilot tones for the first tone unit are included in the total of 26 tones. The second tone unit includes a plurality of tones being greater than the total of 26 tones. The 4 pilot tones for the second tone unit are included in the plurality of tones. The locations of a plurality of pilot tones for the plurality of resource units are fixed when two first tone units are included in the plurality of resource units in place of the second tone unit.

公开(公告)号：US20190229862A1

公开(公告)日：2019-07-25

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: H04L5/00 ,  H04W74/00

CPC classification number: H04L5/0007 ,  H04L5/0053 ,  H04W74/002 ,  H04W74/02 ,  H04W84/12

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.