公开(公告)号：US10178529B2

公开(公告)日：2019-01-08

申请号：US14351843

申请日：2012-10-15

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo Choi ,  Hangyu Cho ,  Dongcheol Kim

IPC: H04W72/10 ,  H04W4/70 ,  H04L1/18 ,  H04W76/14 ,  H04W72/04 ,  H04L1/16 ,  H04W74/08

Abstract: The present invention relates to a wireless connection system, and in particular, relates to methods of retransmitting data in a machine-to-machine communication system, methods of managing the data, and devices for supporting machine-to-machine communication. As one aspect of the present invention, the method of retransmitting data in the wireless connection system supporting the machine-to-machine communication may include: allocating a data slot for retransmitting data from a first machine, from among two or more peer machines, by transmitting a transmit request message to a second machine; receiving a transmit response message transmitted form the second machine in response to the transmit request message; and retransmitting data to the second machine through the allocated data slot.

公开(公告)号：US10172170B2

公开(公告)日：2019-01-01

申请号：US14378742

申请日：2013-03-26

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki Kim ,  Yongho Seok ,  Seunghee Han ,  Jinsoo Choi ,  Jinsam Kwak ,  Hangyu Cho

IPC: H04W76/11 ,  H04W76/14 ,  H04W74/00 ,  H04W76/23 ,  H04W84/12 ,  H04W88/08

Abstract: The present invention discloses a method for changing an association ID in a wireless communication system and an apparatus therefor. Specifically, a method for changing an association identification (AID) of a first station (STA) communicating directly with a second STA in a wireless communication system comprises the steps of: receiving, from an access point (AP), a reassignment response frame containing new AID information to be newly allocated to the first STA; the first STA transmitting an update request frame containing the new AID information to the second STA; and as a response to the update request frame, receiving an update response frame from the second STA.

公开(公告)号：US10149279B2

公开(公告)日：2018-12-04

申请号：US15315650

申请日：2015-06-01

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/00 ,  H04W84/12 ,  H04L5/00 ,  H04W56/00 ,  H04W72/04 ,  H04W74/08 ,  H04L27/26

Abstract: A method by which an STA transmits a multi-user (MU) frame in a wireless communication system, according to one embodiment of the present invention comprises the steps of: receiving, from an access point (AP), a second downlink frame including time synchronization information and frequency synchronization information; adjusting a time synchronization and a frequency synchronization by using the time synchronization information and the frequency synchronization information; receiving a third downlink frame including MU frame allocation information; and transmitting the MU frame according to the MU allocation information, wherein the time synchronization information is determined by comparing, to a reference value, a difference of measurement values relating to frames exchanged prior to the reception of the second downlink frame, and the reference value is a common value among STAs related to a multi-user transmission.

公开(公告)号：US10128925B2

公开(公告)日：2018-11-13

申请号：US15505561

申请日：2015-08-24

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/0452 ,  H04L29/08 ,  H04W74/00 ,  H04L1/06

Abstract: In the present invention, disclosed is a method for uplink multi-user transmission in a wireless communication system and an apparatus therefor. Specifically, a method for performing, by a station (STA), uplink (UL) multi-user (MU) transmission in a wireless communication system comprises the steps of: receiving, from an access point (AP), a trigger frame including information for UL MU transmission; and transmitting an UL MU PPDU on the basis of the information for UL MU transmission, wherein the trigger frame is a medium access control (MAC) frame, a MAC header of the trigger frame includes a type field and a subtype field, and the type of the trigger frame may be indicated by the type field and the subtype field.

公开(公告)号：US10122508B2

公开(公告)日：2018-11-06

申请号：US15224386

申请日：2016-07-29

Applicant: LG ELECTRONICS INC.

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

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

Abstract: Proposed herein is a LTF sequence that is used in a wireless LAN system. The proposed LTF sequence may correspond to a sequence for a second frequency band of a second wireless LAN system. The proposed sequence may be generated through a LTF sequence that is used in a first wireless LAN system, which is different from the second wireless LAN system. The LTF sequence of the first wireless LAN system may correspond to a sequence for a first frequency band, which is different from the second frequency band. A length of an IDFT/DFT period and a bandwidth of a transmission frequency that are applied to the LTF sequence of the first wireless LAN system are different from a length of an IDFT/DFT period and a bandwidth of a transmission frequency that are applied to the LTF sequence of the second wireless LAN system.

公开(公告)号：US10111270B2

公开(公告)日：2018-10-23

申请号：US15165969

申请日：2016-05-26

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo Choi ,  Dongguk Lim ,  Hangyu Cho ,  Wookbong Lee

IPC: H04W76/14 ,  H04W4/00 ,  H04W72/04 ,  H04W76/02 ,  H04W4/70 ,  H04L5/00 ,  H04W84/12

Abstract: Provided is a method for receiving an uplink PPDU by using a plurality of RUs through a specific band in a wireless LAN system in which a plurality of bands is supported. Transmission of the uplink PPDU is disclosed by a trigger frame and the trigger frame indicates information on an identifier and a frequency resource of each station. In the trigger frame, an index field indicating the RU may be configured with the same size regardless of a bandwidth. To this end, a plurality of index groups is used instead of a method indicating a bitmap field or a start point/offset. A first index group of the index field may be used to indicate a first RU and a second index group of the index field may be used to indicate a second RU.

公开(公告)号：US10091729B2

公开(公告)日：2018-10-02

申请号：US15424211

申请日：2017-02-03

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo Choi ,  Hangyu Cho ,  Jeongki Kim

IPC: H04W52/02 ,  H04W72/12 ,  H04W72/00 ,  H04W72/04 ,  H04B7/0452 ,  H04W4/70 ,  H04W74/06 ,  H04W74/04 ,  H04L29/12 ,  H04W84/12

Abstract: An embodiment of the present invention provides a method for performing channel access at an STA of a multiuser (MU) group in a wireless communication system, including receiving a resource assignment frame; and checking a group indicator field included in the resource assignment frame, wherein, if the group indicator field indicates that a slot assignment field for the MU group is present in the resource assignment frame, the STA determines a slot start offset based on the slot assignment field.

公开(公告)号：US10085262B2

公开(公告)日：2018-09-25

申请号：US15504007

申请日：2015-08-05

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo Choi ,  Hangyu Cho ,  Wookbong Lee

IPC: H04W72/04 ,  H04W84/12

CPC classification number: H04W72/0453 ,  H04L5/0037 ,  H04W72/042 ,  H04W72/08 ,  H04W84/12

Abstract: Disclosed is a method and apparatus for allocating a wireless resource in order to prevent interference in a wireless LAN. A method for allocating a wireless resource in a wireless LAN may comprise the steps of: allocating, by an AP, a plurality of wireless resources for a plurality of STAs included in a BSS, in the entire bandwidth, respectively; and transmitting, by the AP, a PPDU to the plurality of STAs through the plurality of wireless resources, respectively, wherein each of the plurality of wireless resources is a combination of a plurality of wireless units defined in different sizes on a frequency axis, and each of the plurality of wireless resources can be determined in consideration of the size of the bandwidth of at least one STA supporting a bandwidth smaller than the size of the entire bandwidth from among the plurality of STAs.

公开(公告)号：US10051687B2

公开(公告)日：2018-08-14

申请号：US15515123

申请日：2015-04-08

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Wookbong Lee ,  Jinyoung Chun ,  Jinsoo Choi ,  Hangyu Cho ,  Eunsung Park

IPC: H04B7/00 ,  H04B1/00 ,  H04B1/04 ,  H04W88/06 ,  H04L5/00 ,  H04W84/04 ,  H04L27/26 ,  H04W48/10 ,  H04W48/12 ,  H04W74/00 ,  H04W84/12

Abstract: The present document relates to a wireless communication system and, more particularly, to a method for transmitting a frame in a high-density wireless LAN system, and a station device for performing the method. To this end, a station for transmitting a frame is comprised of a radio frame for a second type station comprising a frame portion for a first type station and a frame portion for the second type station, wherein the frame portion for the first type station comprises a first OFDM symbol for transmitting a signaling field (L-SIG) for the first type station, and the frame portion for the second type station comprises one or more second OFDM symbols for transmitting a signaling field (HE-SIG) for the second type station. Additionally, the radio frame for the second type station further comprises one or more third OFDM symbols for transmitting the L-SIG and the HE-SIG repeatedly.

公开(公告)号：US10021722B2

公开(公告)日：2018-07-10

申请号：US15317089

申请日：2015-04-27

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung Chun ,  Wookbong Lee ,  Jinsoo Choi ,  Dongguk Lim ,  Hangyu Cho

IPC: H04W4/00 ,  H04W74/08 ,  H04W72/12 ,  H04W72/04 ,  H04J13/18 ,  H04J4/00 ,  H04W84/12

CPC classification number: H04W74/0825 ,  H04J4/00 ,  H04J13/18 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/1284 ,  H04W74/0816 ,  H04W84/12

Abstract: Disclosed are a method and a device for receiving a frame in a wireless LAN. A method for receiving a frame in a wireless LAN comprises the steps of: an AP transmitting an RTS frame to a plurality of STAs, wherein the RTS frame comprises information for NAV setting of an STA other than the plurality of STAs; the AP receiving from each of the plurality of STAs, as a response to the RTS frame, a CTS PPDU and an additional CTS PPDU on overlapped time resources; and the AP transmitting an uplink transmission indication frame to the plurality of STAs, wherein the uplink transmission indication frame triggers transmission of an uplink frame of each of the plurality of STAs.