公开(公告)号：US11451421B2

公开(公告)日：2022-09-20

申请号：US16494751

申请日：2018-03-20

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Jinyoung Chun ,  Jinsoo Choi ,  Dongguk Lim

IPC: H04L27/02 ,  H04L27/26 ,  H04W52/02 ,  H04W84/12

Abstract: Proposed are a method and an apparatus for transmitting a wake-up frame in a wireless LAN system. Specifically, a transmission apparatus configures a wake-up frame to which an OOK scheme is applied, and transmits the wake-up frame to a reception apparatus. The wake-up frame comprises an on-signal and an off-signal. The on-signal is configured using a signal obtained by masking one-half of a signal obtained by inserting a CP into a first time domain signal. The first time domain signal is generated by inserting coefficients into 13 consecutive subcarriers in a 20 MHz band and performing 64-point IFFT on the 13 consecutive subcarriers. A signal placed at a front part of the on-signal is nulled.

公开(公告)号：US11388725B2

公开(公告)日：2022-07-12

申请号：US16970947

申请日：2019-02-25

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Jinmin Kim ,  Kiseon Ryu ,  Dongguk Lim ,  Jinyoung Chun ,  Jinsoo Choi

IPC: H04W76/11 ,  H04W8/24 ,  H04W72/04 ,  H04L1/16 ,  H04L5/14 ,  H04W84/12

Abstract: Disclosed is a method and a device for transmitting and receiving a PPDU based on FDR in a wireless LAN system. More specifically, an AP generates FDR indication information on that the AP is capable of performing the FDR and transmits a DL PPDU including the FDR indication information to a first STA and a second STA. The AP receives a first UL PPDU from the first STA and a second UL PPDU form the second STA. A DL PPDU, a first UL PPDU, and a second UL PPDU are transmitted and received based on the FDR.

公开(公告)号：US11284349B2

公开(公告)日：2022-03-22

申请号：US16754729

申请日：2018-10-08

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Eunsung Park ,  Jinyoung Chun ,  Jinsoo Choi

IPC: H04W52/02 ,  H04W84/12 ,  H04W88/08

Abstract: A method for transmitting a physical protocol data unit (PPDU) by an access point (AP) in a wireless LAN (WLAN) according to an embodiment of the present disclosure may comprise the steps of: generating a legacy-signal (L-SIG) field for a wake-up radio (WUR) PPDU; on the basis of the L-SIG field, generating one binary phase shift keying (BPSK) symbol located between the L-SIG field and a WUR band preamble; and transmitting the WUR PPDU including the L-SIG field, the one BPSK symbol, and the WUR band preamble, wherein the AP generates the one BPSK symbol on the basis of the same bit sequence as a bit sequence for the L-SIG field.

公开(公告)号：US11252666B2

公开(公告)日：2022-02-15

申请号：US16641107

申请日：2018-06-19

Applicant: LG Electronics Inc.

Inventor： Jinyoung Chun ,  Eunsung Park ,  Dongguk Lim ,  Jinsoo Choi

IPC: H04W56/00 ,  H04W52/02 ,  H04L27/02 ,  H04W52/52 ,  H04W84/12

Abstract: A method by which an access point (AP) transmits a wake-up radio (WUR) signal in a wireless LAN (WLAN), according to one embodiment of the present invention, comprises the steps of: determining a synchronization signal providing time synchronization for a data signal in the WUR signal; and transmitting the WUR signal including the synchronization signal and the data signal, wherein the synchronization signal can be an on-off keying (OOK) signal having a length of 128 us and generated by mapping, to 2 us symbol, each bit of a binary sequence having a length of 64, when a data rate of the data signal is 62.5 kbps.

公开(公告)号：US20210385830A1

公开(公告)日：2021-12-09

申请号：US17286996

申请日：2019-11-06

Applicant: LG ELECTRONICS INC.

Inventor： Dongguk Lim ,  Jinsoo Choi ,  Jinmin Kim ,  Eunsung Park ,  Sunwoong Yun

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

Abstract: Proposed are a method and device for transmitting EHT PPDU in a wireless LAN system. Particularly, a transmission STA generates first and second LTF symbols. The transmission STA transmits EHT PPDU comprising the first and second LTF symbols to a reception STA. The first and second LTF symbols are generated on the basis of an LTF sequence for first to fourth spatial streams. In the first LTF symbol, the LTF sequence for the first to fourth spatial streams is mapped to tones in four tone units in a frequency domain. In the second LTF symbol, the LTF sequence for the first to fourth spatial streams is mapped to tones in four tone units in a frequency domain. The LTF sequence, for the first to fourth spatial streams, mapped to the frequency domain of the second LTF symbol is mapped to a tone by means of cyclic shifting, by two tones, the LTF sequence, for the first to fourth spatial streams, mapped to the frequency domain of the first LTF symbol.

公开(公告)号：US11184853B2

公开(公告)日：2021-11-23

申请号：US16645446

申请日：2018-08-20

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Jinyoung Chun ,  Dongguk Lim ,  Jinsoo Choi

IPC: H04W52/02 ,  H04L27/02 ,  H04W84/12

Abstract: Presented are a method and device for transmitting a wakeup packet in a wireless LAN system. Specifically, the transmission device configures a first wakeup packet having a first data rate by using a first sync field, and a second wakeup packet having a second data rate by using a second sync field. The transmission device transmits the first and second wakeup packets to a receiving device. Here, an OOK scheme is applied to the first and second wakeup packets to configure the first and second wakeup packets as an ON signal or an OFF signal. The first sync field includes a first sequence, and the second sync field includes a second sequence which is a complementary sequence to the first sequence. The number of coefficient 1 and coefficient 0 included in the first sequence is the same. The first and second sequences have a 32 bit length, and each bit of the first and second sequences has a duration of 2 μs.

公开(公告)号：US11088879B2

公开(公告)日：2021-08-10

申请号：US16609169

申请日：2018-04-18

Applicant: LG Electronics Inc.

Inventor： Dongguk Lim ,  Eunsung Park ,  Jinsoo Choi

IPC: H04L27/20 ,  H04L5/00 ,  H04L27/26 ,  H04W52/02 ,  H04W84/12 ,  H04W88/08

Abstract: A method for transmitting a physical layer protocol data unit (PPDU) by a station (STA) in a wireless LAN (WLAN) system according to an embodiment of the present invention may comprise the steps of: configuring an L-part including a legacy-short training field (L-STF), a legacy-long training field (L-LTF), and a legacy-signal field (L-SIG); when a PPDU to be transmitted by the STA corresponds to a predetermined format, performing binary phase shift keying (BPSK) modulation on N consecutive symbols located after the L-SIG, for packet classification; and transmitting the PPDU including the L-part and the N BPSK-modulated symbols.

公开(公告)号：US10925000B2

公开(公告)日：2021-02-16

申请号：US16464662

申请日：2017-11-28

Applicant: LG ELECTRONICS INC.

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

IPC: H04W52/02 ,  H04L27/02 ,  H04L27/26 ,  H04W84/12

Abstract: A method for transmitting a wake-up radio (WUR) packet by an access point (AP) in a wireless LAN (WLAN) system according to an embodiment of the present invention comprises the steps of: generating a WUR packet including a legacy preamble and a plurality of on-symbols; and transmitting the WUR packet to a station (STA), wherein a subcarrier sequence for generating the plurality of on-symbols may be determined on the basis of a legacy training field sequence that configures the legacy preamble.

公开(公告)号：US10924955B2

公开(公告)日：2021-02-16

申请号：US16461345

申请日：2017-11-15

Applicant: LG ELECTRONICS INC.

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

IPC: H04W24/10 ,  H04B7/06 ,  H04W72/04 ,  H04B7/0413 ,  H04L5/00 ,  H04W84/12

Abstract: A method for reporting channel information by a station (STA) in a wireless LAN (WLAN) system according to an embodiment of the present invention comprises the steps of: receiving a null data packet announcement (NDP-A) frame from a first access point (AP); when it is determined that the NDP-A frame is for joint transmission of a plurality of APs, measuring a channel for a first AP having transmitted the NDP-A frame and a channel for at least one second AP channel which has not transmitted the NDP-A frame; and transmitting channel information for the plurality of APs, which has been acquired according to a result of the channel measurement, to the first AP, wherein when the NDP-A frame is for the joint transmission, the STA can acquire channel information relating to the plurality of APs through a plurality of NDP frames received from the plurality of APs after receiving the NDP-A frame one time.

公开(公告)号：US10917209B2

公开(公告)日：2021-02-09

申请号：US16739787

申请日：2020-01-10

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04W72/04 ,  H04L1/00 ,  H04W84/12

Abstract: A method for transmitting data by a first station (STA) in a wireless local area network (WLAN) system is disclosed. The method includes configuring, as a radio frame for transmission of the data, a high efficiency extended range single user physical protocol data unit (HE ER SU PPDU) in which a high efficiency signal A (HE-SIG-A) field is repeated, and transmitting the configured HE ER SU PPDU to a second STA in a resource unit (RU) of one of a first type and a second type, the first type having a size of 106 tones and the second type having a size of 242 tones. If the HE ER SU PPDU is transmitted in an RU of the first type, the HE ER SU PPDU is transmitted in an RU of the first type at a fixed position in a primary 20-MHz channel.