公开(公告)号：US20180132178A1

公开(公告)日：2018-05-10

申请号：US15699971

申请日：2017-09-08

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02

CPC classification number: H04W52/0216 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/14 ,  Y02D70/142 ,  Y02D70/22

Abstract: A method for managing power of a wireless terminal in a wireless local area network (WLAN) system according to one embodiment includes: transmitting, by a first wireless terminal that switches between an awake state and a doze state based on a power save mode for power management, a target wake time (TWT) request frame for requesting first target beacon transmission time (TBTT) information, which indicates a reception time of a first beacon frame, and listen interval information, which indicates a reception interval for a subsequent beacon frame, to a second wireless terminal; receiving, by the first wireless terminal, a TWT response frame including the first TBTT information and the listen interval information from the second wireless terminal in response to the TWT request frame; switching, by the first wireless terminal, to the doze state after receiving the TWT response frame; switching, by the first wireless terminal, to the awake state according to the first TBTT information in order to receive the first beacon frame; and switching, by the first wireless terminal, to the doze state after receiving the first beacon frame.

公开(公告)号：US20180124806A1

公开(公告)日：2018-05-03

申请号：US15791157

申请日：2017-10-23

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Hangyu CHO

IPC: H04W72/12 ,  H04W72/04

CPC classification number: H04W72/1205 ,  H04W72/0446 ,  H04W72/1278 ,  H04W74/0816 ,  H04W84/12

Abstract: According to one embodiment of the present invention, a method for a station (STA) to transmit a frame in a wireless local area network system includes setting a TXOP duration field and a UL flag and transmitting a high efficiency physical layer protocol data unit (HE PPDU) including the TXOP duration field and the UL flag. In this case, the STA sets the UL flag to a first value corresponding to uplink if the HE PPDU is addressed to an access point (AP). When the TXOP duration field is set to a special value other than a TXOP duration value for configuring a network allocation vector and the HE PPDU corresponds to a single user PPDU carrying an ready-to-send frame or a clear-to-send frame, the STA may set the UL flag to a second value corresponding to downlink, even if the HE PPDU is addressed to the AP.

公开(公告)号：US20180123758A1

公开(公告)日：2018-05-03

申请号：US15324604

申请日：2015-08-19

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom LEE ,  Jiwon KANG ,  Jinsoo CHOI ,  Wookbong LEE ,  Dongguk LIM ,  Hangyu CHO ,  Eunsung PARK

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0051 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0082 ,  H04W72/0446 ,  H04W72/048 ,  H04W72/121 ,  H04W72/14 ,  H04W84/12

Abstract: Disclosed are a transmitter and a pilot sequence transmission method comprising: generating an asymmetric sequence set comprising pilot sequences which have been shifted by irregular intervals; mapping, to the pilot sequences, additional information that is shown by using shared bits and non-shared bits; and selecting any one pilot sequence and transmitting same.

公开(公告)号：US20180109300A1

公开(公告)日：2018-04-19

申请号：US15566207

申请日：2016-04-14

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo CHOI ,  Hangyu CHO ,  Wookbong LEE

IPC: H04B7/0452 ,  H04L27/32 ,  H04L5/00

CPC classification number: H04B7/0452 ,  H04L5/0007 ,  H04L5/0094 ,  H04L27/2602 ,  H04L27/32 ,  H04W84/12

Abstract: The present specification suggests a method and an apparatus regarding first and/or second signal fields used in a wireless LAN system. When multiple resource units are used for a specific band, a bit map field may be configured first by a resource unit having a first size, and for the remaining bands, allocation information may be configured by a resource unit having a second size. Also, a bit map field which indicates whether MU-MIMO technique is applied to the specific band or not can be further included. For example, the resource unit having the first size may comprise 242-RU and the resource unit having the second size may comprise 26-RU. A specific resource unit to which the MU-MIMO technique is applied may be 106-RU or more. When discontinuous channel bonding is an issue, additional changes can be made to the first/second signal fields of the present specification.

公开(公告)号：US20180092032A1

公开(公告)日：2018-03-29

申请号：US15560092

申请日：2016-07-01

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02 ,  H04L5/00 ,  H04W74/08 ,  H04W74/00

CPC classification number: H04W52/0216 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/26 ,  H04L27/2613 ,  H04W74/006 ,  H04W74/0833 ,  H04W74/085 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/10 ,  Y02D70/1262 ,  Y02D70/14 ,  Y02D70/142 ,  Y02D70/22

Abstract: A method for performing uplink Orthogonal Frequency Division Multiple Access (UL OFDMA) based random access to an Access Point (AP) by a Station (STA) in a Wireless Local Area Network (WLAN) system is proposed. For the purpose, the STA sets a random value within an OFDMA Contention Window (CWO) as an OFDMA Back-Off (OBO) value, receives a beacon frame from the AP, the beacon frame including transmission start time information of one or more Trigger Frames for Random Access (TF-Rs), decrements the OBO value based on reception of the one or more TF-Rs, and if the OBO value reaches 0, transmits a random access request frame in resources selected randomly from among resources allocated to the STA.

公开(公告)号：US20180048503A1

公开(公告)日：2018-02-15

申请号：US15556281

申请日：2015-10-21

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin KIM ,  Wookbong LEE ,  Hangyu CHO ,  Eunsung PARK

IPC: H04L27/26

CPC classification number: H04L27/26 ,  H04L27/2602 ,  H04L27/2605 ,  H04L27/2613 ,  H04W84/12 ,  H04W88/02

Abstract: A data transmission method by a station (STA) apparatus of a wireless LAN system is disclosed. A data transmission method by an STA apparatus according to the present invention comprises the steps of: generating a physical protocol data unit (PPDU) including a physical preamble and a data field; determining whether to add a padding symbol to the PPDU; generating and adding the padding symbol to the PPDU if adding the padding symbol is determined; and transmitting the PPDU.

公开(公告)号：US20180035461A1

公开(公告)日：2018-02-01

申请号：US15550005

申请日：2016-01-22

Applicant: LG ELECTRONICS INC.

Inventor： Suhwook KIM ,  Kiseon RYU ,  Jinyoung CHUN ,  Hangyu CHO

IPC: H04W74/08

CPC classification number: H04W74/0816 ,  H04W84/12

Abstract: Disclosed are a medium protection-based method and device for MU transmission in a wireless LAN. The medium protecting method for MU transmission in a wireless LAN can comprise the steps of: receiving, by an STA, an RTS frame transmitted on the basis of DL MU transmission by an AP; and determining, by the STA, whether to configure an NAV on the basis of an RA field of the RTS frame, wherein if the RTS frame is an MU RTS frame for acquiring MU TXOP, the RA field includes an RA control field and a plurality of RA simple identification fields, the MU TXOP indicates a time resource having a transmission right for DL MU transmission of downlink data, the RA control field includes information for indicating that the RTS frame is an MU RTS frame transmitted to acquire the MU TXOP, and each of the plurality of RA simple identification fields can include identification information of each of the plurality of STAs.

公开(公告)号：US20180026691A1

公开(公告)日：2018-01-25

申请号：US15655290

申请日：2017-07-20

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin PARK ,  Jinmin KIM ,  Hangyu CHO ,  Kyungtae JO

IPC: H04B7/06 ,  H04W72/04

Abstract: A method of transmitting and receiving a signal, which is transmitted by a station in a wireless communication system, is disclosed in the present specification. The method can include the steps of receiving a PPDU and performing beamforming training based on a TRN field of the received PPDU. In this case, a training length field belonging to an L-header field of the PPDU indicates a length of the TRN field from the timing at which the PPDU ends in reverse order and a length field belonging to the L-header field of the PPDU can indicate a length resulted from subtracting the length of the TRN field indicated by the training length field from a length of the PPDU after the L-header field.

公开(公告)号：US20170374681A1

公开(公告)日：2017-12-28

申请号：US15537355

申请日：2016-10-04

Applicant: LG ELECTRONICS INC.

Inventor： Jeongki KIM ,  Kiseon RYU ,  Jinyoung CHUN ,  Jinsoo CHOI ,  Suhwook KIM ,  Hangyu CHO

IPC: H04W74/08 ,  H04W16/02 ,  H04W52/02 ,  H04L29/08 ,  H04W84/12

Abstract: A method by which an access point (AP) supports multi-basic service sets (BSSs) in a wireless LAN system, according to one embodiment of the present invention, comprises the steps of: setting a plurality of BSS identifiers for each individual BSS belonging to the multi-BSSs; and transmitting a frame for notifying a station (STA) of the plurality of BSS identifiers set for each individual BSS, wherein the plurality of BSS identifiers include a first BSS identifier and a second BSS identifier, which has a length shorter than that of the first BSS identifier, and the first BSS identifier is set to different values for each individual BSS, but the second BSS identifier can be set to the same value for all of the multi-BSSs.

公开(公告)号：US20170367090A1

公开(公告)日：2017-12-21

申请号：US15532365

申请日：2015-12-01

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/08

CPC classification number: H04W72/0426 ,  H04L5/001 ,  H04L5/0035 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0091 ,  H04L5/0092 ,  H04L5/0098 ,  H04L12/5692 ,  H04L47/18 ,  H04W72/00 ,  H04W72/04 ,  H04W72/0446 ,  H04W72/08

Abstract: A method for resource allocation in a wireless LAN system according to an embodiment of the present invention is characterized in that an access point (AP) sends a frame comprising a signaling field and a data field to one or more stations, wherein the signaling field comprises a first signaling field (SIG A field) including first common control information for the one or more stations and a second signaling field (SIG B field) including individual control information for each of the one or more stations, wherein the second signaling field includes resource allocation information for data transmission to the one or more stations, and wherein the resource allocation information comprises resource allocation information for data to be transmitted in a frequency band different from a frequency band in which the second signaling field (SIG B field) is transmitted.