公开(公告)号：US10212005B2

公开(公告)日：2019-02-19

申请号：US15948193

申请日：2018-04-09

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Jinsoo Choi ,  Hangyu Cho

IPC: H04L25/03 ,  H04L27/26 ,  H04L5/00 ,  H04B7/0413 ,  H04W52/52 ,  H04W84/12 ,  H04L25/02

Abstract: Disclosed are a method and an apparatus for generating an STF signal usable in a wireless LAN system. The STF signal is included in a field used to improve AGC estimation of a MIMO transmission. The STF signal that is suggested, for example, can be used for an 80 MHz band and can be generated based on a sequence in which a predetermined M sequence is repeated. Also, the disclosed STF signal can be used for a 1×STF signal from the 1×STF signal and a 2×STF signal. The predetermined M sequence can be a binary sequence of which the length is 15 bits.

公开(公告)号：US10205570B2

公开(公告)日：2019-02-12

申请号：US15365828

申请日：2016-11-30

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Jinsoo Choi ,  Hangyu Cho

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

Abstract: Provided are a method and apparatus for transmitting a feedback frame in a WLAN system. More specifically, a transmission apparatus configures the pilot sequence of a first WLAN system using the pilot sequence of a second WLAN system. The transmission apparatus transmits the pilot sequence of the first WLAN system.

公开(公告)号：US10193673B2

公开(公告)日：2019-01-29

申请号：US15326026

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: H04W4/00 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W84/12

Abstract: One embodiment of the present invention provides a transmitter and a pilot sequence transmission method comprising: generating an asymmetric sequence set comprising a plurality of pilot sequences which have been circular shifted by irregular intervals on a time axis; mapping, to the respective pilot sequences included in the asymmetric sequence set, additional information that is shown by using shared bits and non-shared bits; and selecting any one pilot sequence selected from the asymmetric sequence set and transmitting same to a receiver.

公开(公告)号：US10187893B2

公开(公告)日：2019-01-22

申请号：US15490798

申请日：2017-04-18

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04W24/02 ,  H04W84/12

Abstract: Provides are a method and apparatus for configuring an LTF sequence in a wireless LAN system. More specifically, a transmission apparatus generates an LTF sequence corresponding to a first frequency band. The transmission apparatus sends an LTF sequence corresponding to the first frequency band to a reception apparatus. In this case, an LTF sequence corresponding to the second 106-RU of a second frequency band is used as a sequence located in the second 106-RU of the second frequency band in the LTF sequence corresponding to the first frequency band. The transmission apparatus may apply a phase shift of 180° to the LTF sequence corresponding to the second 106-RU of the second frequency band.

公开(公告)号：US10158516B2

公开(公告)日：2018-12-18

申请号：US15303202

申请日：2015-03-23

Applicant: LG ELECTRONICS INC.

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

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

Abstract: Provided are method for transmitting a data block in a wireless LAN and an apparatus using the same. A transmitter transmits a physical layer protocol data unit (PPDU) in a transmission bandwidth. The PPDU includes a first part to which a first fast Fourier transform (FFT) size is applied and a second part to which a second FFT size is applied. The second FFT size increases by integer times as the size of the transmission bandwidth increases.

公开(公告)号：US10153877B2

公开(公告)日：2018-12-11

申请号：US15296997

申请日：2016-10-18

Applicant: LG ELECTRONICS INC.

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

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

Abstract: Provides are a method and an apparatus for transmitting a feedback frame in a wireless local area network (WLAN) system. Specifically, a station (STA) receives, from an access point (AP), a null data packet announcement (NDPA) frame indicating transmission of a null data packet (NDP). The STA receives the NDP from the AP. The STA transmits, to the AP, a feedback frame including channel state information determined based on the NDP. The channel state information indicates a feedback subcarrier in each subcarrier group. The subcarrier group is generated based on grouping information using subcarriers in a frequency band excluding a guard subcarrier and a DC subcarrier. The feedback subcarrier is included in a subcarrier with an odd-numbered subcarrier index. The feedback subcarrier corresponds to a subcarrier with an even-numbered subcarrier index that is adjacent to the subcarrier with the odd-numbered subcarrier when the subcarrier with the odd-numbered subcarrier is a null subcarrier.

公开(公告)号：US10135662B2

公开(公告)日：2018-11-20

申请号：US15524873

申请日：2015-11-30

Applicant: LG ELECTRONICS INC.

Inventor： Kilbom Lee ,  Hangyu Cho ,  Wookbong Lee ,  Jinsoo Choi ,  Jiwon Kang

IPC: H04B1/16 ,  H04L27/26 ,  H04L27/38

Abstract: Disclosed is a sequence generation method comprising: generating a basic sequence structure including C48 having 48 tones, X6 having six tones, and X5 having five tones; selecting any one of a plurality of phase rotation factors predetermined for a bandwidth; and generating a sequence to be inputted into a preamble to be transmitted to a terminal, by using the phase rotation factor, applied in basic sequence structural units, and the basic sequence structure.

公开(公告)号：US10129911B2

公开(公告)日：2018-11-13

申请号：US15214388

申请日：2016-07-19

Applicant: LG ELECTRONICS INC.

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

IPC: H04L12/28 ,  H04W76/00 ,  H04W84/12

Abstract: A method for processing an uplink PPDU in a wireless LAN system is proposed herein. The uplink PPDU may correspond to a PPDU that is received from multiple users. In the receiving device, a first uplink MU PPDU may be received from a first user, and a second uplink MU PPDU may be received from a second user. In this case, CSD of an enhanced method may be applied to LTF signals respective to each of the first uplink MU PPDU and the second uplink MU PPDU. Additionally, an orthogonal mapping matrix may be applied to the LTF signals respective to each of the MU PPDUs as a method ensuring orthogonality between the streams.

公开(公告)号：US10098110B2

公开(公告)日：2018-10-09

申请号：US15513873

申请日：2015-10-05

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo Choi ,  Hangyu Cho ,  Wookbong Lee

IPC: H04W72/04 ,  H04W72/12

Abstract: Disclosed are a method and an apparatus for allocating wireless resources based on a single resource unit in a WLAN. The method for allocating the wireless resources based on a single resource unit in a WLAN may comprise the steps of: an AP scheduling, on a bandwidth, a plurality of wireless resources for communication with a plurality of STAs; and the AP transmitting a plurality of items of downlink data to each of the plurality of STAs through each of the plurality of wireless resources, wherein when resource allocation based on a virtual allocation resource unit is not supported, each of the plurality of wireless resources can include at least one first resource unit only or at least one second resource unit only, wherein the size of the first resource unit can be larger than the size of the second resource unit.

公开(公告)号：US10038535B2

公开(公告)日：2018-07-31

申请号：US15302922

申请日：2015-02-16

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04W84/12 ,  H04B7/0452 ,  H04B7/0417

CPC classification number: H04L5/005 ,  H04B7/0417 ,  H04B7/0452 ,  H04L5/001 ,  H04W84/12

Abstract: A method and apparatus for transmitting a frame on the basis of a sounding procedure is disclosed. The method for transmitting the frame on the basis of a sounding procedure in a wireless LAN may comprise the steps of: transmitting an NDPA frame to each of multiple STAs by an AP wherein the NDPA frame notifies of the transmission of NDP; transmitting the NDP to each of the multiple STAs by the AP; receiving, by the AP, multiple feedback frames transmitted through multiple transmission sources allocated to the multiple STAs in time sources overlapped by the multiple STAs, respectively; and transmitting, by the AP, multiple downlink frames to the multiple STAs respectively.