公开(公告)号：US20180007661A1

公开(公告)日：2018-01-04

申请号：US15537356

申请日：2015-12-15

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04L1/18 ,  H04L27/26 ,  H04W84/12

CPC classification number: H04W72/04 ,  H04L1/00 ,  H04L1/1671 ,  H04L1/1685 ,  H04L1/1861 ,  H04L5/0037 ,  H04L5/0094 ,  H04L27/26 ,  H04L27/2601 ,  H04L27/2602 ,  H04W84/12

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

公开(公告)号：US20170373806A1

公开(公告)日：2017-12-28

申请号：US15526307

申请日：2016-08-10

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo CHOI ,  Dongguk LIM ,  Hangyu CHO ,  Eunsung PARK

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

CPC classification number: H04L5/005 ,  H04L1/00 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0039 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0092 ,  H04L5/0094 ,  H04L27/2602 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/1289 ,  H04W84/12

Abstract: Provided is a control field comprising allocation information about resource units (RUs) in a wireless LAN system in which a plurality of RUs are supported. A control field comprising allocation information about RUs can be comprised in an uplink or downlink PPDU and can be designed in accordance with a plurality of frequency bands. A control field corresponding to a particular frequency band can be duplicated over another frequency band. Also, the control field corresponding to the particular frequency band can be used for scheduling of a data field corresponding to the same frequency band and a data field corresponding to another frequency band.

公开(公告)号：US20170310519A1

公开(公告)日：2017-10-26

申请号：US15509832

申请日：2015-08-20

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo CHOI ,  Wookbong LEE ,  Hangyu CHO

IPC: H04L27/26 ,  H04L27/18 ,  H04W84/12

CPC classification number: H04L27/2636 ,  H04L5/0023 ,  H04L5/0048 ,  H04L27/18 ,  H04L27/2602 ,  H04L27/2605 ,  H04L27/2613 ,  H04L27/265 ,  H04W84/12

Abstract: A method of transmitting a data block in a wireless WLAN and a device using the same are provided. A transmitter transmits a physical layer protocol data unit (PPDU) that includes a legacy-signal (L-SIG). A guard period (GI) of a first orthogonal frequency division multiplexing (OFDM) symbol that follows the L-SIG is shorter than the GI of a second OFDM symbol that follows the first OFDM symbol.

公开(公告)号：US20170280452A1

公开(公告)日：2017-09-28

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

CPC classification number: H04W72/0453 ,  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：US20170272138A1

公开(公告)日：2017-09-21

申请号：US15505561

申请日：2015-08-24

Applicant: LG ELECTRONICS INC.

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

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

CPC classification number: H04B7/0613 ,  H04B7/0452 ,  H04B7/063 ,  H04B7/0669 ,  H04B7/0695 ,  H04L1/0031 ,  H04L1/0083 ,  H04L1/0643 ,  H04L1/1614 ,  H04L1/1685 ,  H04L29/08 ,  H04L69/323 ,  H04W72/042 ,  H04W74/006

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：US20170257830A1

公开(公告)日：2017-09-07

申请号：US15596801

申请日：2017-05-16

Applicant: LG ELECTRONICS INC.

Inventor： Seunghee HAN ,  Dongcheol KIM ,  Sungho MOON ,  Hangyu CHO ,  Jinmin KIM ,  Hyunwoo LEE ,  Jaehoon CHUNG

IPC: H04W52/14 ,  H04L5/14 ,  H04L1/16 ,  H04W52/24 ,  H04W52/32 ,  H04L1/00 ,  H04L29/06

CPC classification number: H04W52/146 ,  H04L1/0028 ,  H04L1/0031 ,  H04L1/0073 ,  H04L1/1671 ,  H04L1/1678 ,  H04L1/1692 ,  H04L1/1812 ,  H04L1/1887 ,  H04L5/0055 ,  H04L5/14 ,  H04W52/143 ,  H04W52/242 ,  H04W52/325 ,  H04W52/367 ,  H04W52/48 ,  H04W72/0413 ,  H04W72/1284

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：US20170223731A1

公开(公告)日：2017-08-03

申请号：US15328858

申请日：2015-07-28

Applicant: LG ELECTRONICS INC.

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

IPC: H04W74/00 ,  H04W74/08

CPC classification number: H04W74/006 ,  H04L5/0023 ,  H04L27/26 ,  H04W74/00 ,  H04W74/002 ,  H04W74/08 ,  H04W74/0808 ,  H04W74/0816 ,  H04W84/12

Abstract: An embodiment of the present invention relates to a method for performing a clear channel assessment (CCA) by STA in a wireless communication system, the method comprising the steps of: receiving a frame including a coloring bit; changing a CCA level to a first level when the coloring bit indicates a basic service set (BSS) to which the STA belongs, and changing a CCA level to a second level when the coloring bit indicates a BSS to which the STA does not belong; and performing the CCA according to the first level or the second level, wherein when the frame has an OFDM-based format, the frame includes a coloring disable bit, and when the coloring disable bit indicates that the frame is a multiuser transmission-related trigger frame, the STA does not perform a change of the CCA level without regard to information indicated by the coloring bit.

公开(公告)号：US20170208546A1

公开(公告)日：2017-07-20

申请号：US15324667

申请日：2015-06-10

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02 ,  H04W72/04 ,  H04L12/18 ,  H04L5/00

CPC classification number: H04W52/0216 ,  H04L1/1671 ,  H04L1/1867 ,  H04L5/0055 ,  H04L12/1886 ,  H04L27/2613 ,  H04W52/0229 ,  H04W52/0238 ,  H04W52/0245 ,  H04W72/042 ,  H04W74/06 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22

Abstract: Disclosed are a method and an apparatus for power save mode operation on the basis of a frame transmitted from another BSS in a wireless LAN. A method for operating an STA in a wireless LAN in a power save mode comprises: a step in which the STA receives a beacon frame from an AP, the beacon frame comprising a TIM element indicating downlink data pending in the STA; a step in which the STA transmits a PS-poll frame to the AP in response to the beacon frame; a step in which the STA receives, from the AP, an ACK frame transmitted by the AP in response to the PS-poll frame; and a step in which the STA determines the operation of the another BSS in a TXOP power save mode on the basis of the ACK frame.

公开(公告)号：US20170195992A1

公开(公告)日：2017-07-06

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 ,  H04W74/08 ,  H04L5/00 ,  H04W56/00 ,  H04W72/04

CPC classification number: H04W72/005 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0055 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2675 ,  H04W56/0015 ,  H04W56/0065 ,  H04W72/0446 ,  H04W74/0816 ,  H04W84/12

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：US20170171860A1

公开(公告)日：2017-06-15

申请号：US15376563

申请日：2016-12-12

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04

CPC classification number: H04W72/0453 ,  H04L5/0023 ,  H04L5/0039 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0064 ,  H04L5/0094 ,  H04W84/12

Abstract: Provided are a method and apparatus for transmitting a feedback frame in a WLAN system. More specifically, the first wireless STA receives a feedback request field, including an LTF, from a second wireless STA. The first wireless STA configures feedback information about a wireless channel corresponding to a predetermined frequency band using the feedback request field. The first wireless STA transmits the feedback information to the second wireless STA.