公开(公告)号：US20220140962A1

公开(公告)日：2022-05-05

申请号：US17429292

申请日：2020-02-12

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung PARK ,  Jinsoo CHOI ,  Dongguk LIM ,  Jinmin KIM ,  Sunwoong Yun

IPC: H04L5/00

Abstract: Proposed are a method and an apparatus for receiving an EHT PPDU in a wireless LAN system. Specifically, a reception STA receives an EHT PPDU including an STF signal from a transmission STA through a 320 MHz band or a 160+160 MHz band. The reception STA decodes the EHT PPDU. The STF signal is generated on the basis of an EHT STF sequence for the 320 MHz band or the 160+160 MHz band. The EHT STF sequence for the 320 MHz band is a first sequence in which a preconfigured M sequence is repeated, and is defined as {M −1 −M −1 M −1 M 0 −M 1 −M 1 −M 1 M 0 −M 1 M 1 −M 1 −M 0 M −1 M −1 M −1 −M}*(1+j)/sqrt(2).

公开(公告)号：US20220103317A1

公开(公告)日：2022-03-31

申请号：US17430135

申请日：2020-02-12

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung PARK ,  Jinsoo CHOI ,  Dongguk LIM ,  Jinmin KIM ,  Sunwoong YUN

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04B7/0426

Abstract: Proposed are a method and an apparatus for receiving an EHT PPDU in a wireless LAN system. Specifically, a reception STA receives an EHT PPDU including an STF signal from a transmission STA through a 320 MHz band or a 160+160 MHz band. The reception STA decodes the EHT PPDU. The STF signal is generated on the basis of an EHT STF sequence for the 320 MHz band or the 160+160 MHz band. The EHT STF sequence for the 320 MHz band is a first sequence in which a preconfigured M sequence is repeated, and is defined as {M −1 M 0 −M −1 M 0 M −1 M 0 −M −1 M 0 M −1 M 0 M −1 −M 0 −M 1 −M 0 −M −1 M}*(1+j)/sqrt(2).

公开(公告)号：US20220094394A1

公开(公告)日：2022-03-24

申请号：US17310406

申请日：2020-02-27

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin PARK ,  Jeongki KIM ,  Eunsung PARK ,  Jinsoo CHOI ,  Jinmin KIM

IPC: H04B7/024

Abstract: In a wireless local area network (LAN) system, a sharing access point (AP) can determine a Q-matrix related to a first antenna of a first shared AP, a second antenna of the first shared AP, a third antenna of a second shared AP, and a fourth antenna of the second shared AP. The sharing AP can transmit, to the first shared AP, a first value related to the first antenna and a second value related to the second antenna in the Q-matrix. The sharing AP can transmit, to the second shared AP, a third value related to the third antenna and a fourth value related to the fourth antenna in the Q-matrix.

公开(公告)号：US20220038247A1

公开(公告)日：2022-02-03

申请号：US17505390

申请日：2021-10-19

Applicant: LG ELECTRONICS INC.

Inventor： Eunjong LEE ,  Jaehoon CHUNG ,  Genebeck HAHN ,  Jinmin KIM ,  Kukheon CHOI ,  Kwangseok NOH ,  Sangrim LEE

IPC: H04L5/00 ,  H04L5/14 ,  H04L1/00 ,  H04W72/12 ,  H04W72/04

Abstract: A method for receiving downlink data by the terminal in a wireless communication system, includes receiving, from a base station, downlink control information for scheduling a short physical downlink shared channel (sPDSCH) on a short physical downlink control channel (sPDCCH), and receiving, from the base station, downlink data on the sPDSCH based on the downlink control information. Here, the sPDCCH and the sPDSCH are based on a first transmission time interval (TTI)-based radio frame structure, wherein the first TTI-based radio frame structure is shorter in time than a second TTI-based radio frame structure related to (i) a physical downlink shared channel (PDSCH) and (ii) a physical downlink control channel (PDCCH). Further, a number of resource element groups (REGs) consisting of a control channel element (CCE) related to the sPDCCH is smaller than a number of resource element groups (REGs) composed of a CCE related to the PDCCH.

公开(公告)号：US20220021569A1

公开(公告)日：2022-01-20

申请号：US17296162

申请日：2019-11-20

Applicant: LG Electronics Inc.

Inventor： Eunsung PARK ,  Jinsoo CHOI ,  Dongguk LIM ,  Jinmin KIM ,  Sunwoong YUN

IPC: H04L27/26 ,  H04B7/0413

Abstract: A method and device for transmitting an EHT PPDU in a wireless LAN system is proposed. Specifically, a transmission STA generates an STF signal for a 320 MHz band. The transmission STA transmits an EHT PPDU including the STF signal to a reception STA. The STF signal is generated on the basis of an EHT STF sequence. The EHT STF sequence is a first sequence in which preconfigured sequence M is repeated, and is defined as {M 1 −M 0 −M 1 −M 0 −M −1 M 0 −M 1 −M 0 −M −1 M 0 M −1 M 0 −M −1 M 0 −M 1 −M}*(1+j)/sqrt(2). Sqrt( ) represents a square root. Preconfigured sequence M is defined as M={−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1}.

公开(公告)号：US20220014239A1

公开(公告)日：2022-01-13

申请号：US17292693

申请日：2019-09-10

Applicant: LG ELECTRONICS INC.

Inventor： Jinmin KIM ,  Hyowon BAE ,  Jaewook SONG ,  Kyuin LEE ,  Jinsoo CHOI

IPC: H04B7/0413 ,  H04B7/06

Abstract: The present invention relates to an apparatus and a method for performing beamforming using multiple antennas in a wireless AV system. The present specification discloses a wireless data transmission apparatus comprising: a plurality of transmission antennas; a communication circuit for performing a MIMO beamforming procedure on the basis of an individual transmission sector sweep for each of the plurality of transmission antennas during a data transmission interval within a beacon interval, and transmitting a physical layer protocol data unit (PPDU) frame to a wireless data reception apparatus through the plurality of transmission antennas; and a processor connected to the communication circuit, and configured to generate AV data to be transmitted through the PPDU frame and provide the generated AV data to the communication circuit. The present invention can reduce time required for MIMO beamforming while minimizing training of an excessive sector combination in a communication procedure or information related to the MIMO beamforming in a wireless AV system, and maintain the reliability of the system by using an optimum sector combination.

公开(公告)号：US20210320754A1

公开(公告)日：2021-10-14

申请号：US17268060

申请日：2019-09-18

Applicant: LG ELECTRONICS INC.

Inventor： Sunwoong YUN ,  Jinmin KIM ,  Eunsung PARK ,  Dongguk LIM ,  Jinsoo CHOI

IPC: H04L1/06 ,  H04L29/08

Abstract: A method and an apparatus for transmitting a PPDU in a WLAN system are proposed. Specifically, a transmitter generates a PPDU and transmits the PPDU to a receiver. The PPDU includes a legacy field and an EHT field. The legacy field includes a VHT-STF and a HE-STF. The EHT field includes an EHT-STF and a data field. The EHT field is configured on the basis of a CSD value of each transport chain. The CSD value is determined as a candidate CSD value in which the sum of a first absolute value and a second absolute value is the minimum on the basis of a power ratio. The power ratio is a ratio of a received power of the VHT-STF, the HE-STF, or the EHT-STF to a received power of the data field. The first absolute value is an absolute value of a value related to 5 percent of a CDF relative to the power ratio. The second absolute value is an absolute value of a value related to 95 percent of the CDF relative to the power ratio.

公开(公告)号：US20210204299A1

公开(公告)日：2021-07-01

申请号：US17268395

申请日：2019-09-18

Applicant: LG ELECTRONICS INC.

Inventor： Sunwoong YUN ,  Jinmin KIM ,  Eunsung PARK ,  Dongguk LIM ,  Jinsoo CHOI

IPC: H04W72/08 ,  H04W72/04 ,  H04L27/26

Abstract: A method and an apparatus for transmitting a PPDU in a WLAN system are proposed. Specifically, a transmitter generates a PPDU and transmits the PPDU to a receiver. The PPDU includes a legacy field and an EHT field. The legacy field includes an L-STF. The EHT field includes a data field. The legacy field is configured on the basis of a CSD value per a transmission chain. The CSD value is determined by a candidate CSD value that is the minimum of the sums of a first absolute value and a second absolute value on the basis of a power ratio. The power ratio is a ratio of received power of the L-STF to received power of the data field. The first absolute value is an absolute value of a value related to 5 percent of a CDF relative to the power ratio. The second absolute value is an absolute value of a value related to 95 percent of the CDF relative to the power ratio.

公开(公告)号：US20210194631A1

公开(公告)日：2021-06-24

申请号：US17196615

申请日：2021-03-09

Applicant: LG ELECTRONICS INC.

Inventor： Sunwoong YUN ,  Jinmin KIM ,  Sungjin PARK ,  Jinsoo CHOI

IPC: H04L1/06 ,  H04L27/20 ,  H04L5/00 ,  H04W88/08 ,  H04L27/26 ,  H04L1/00

Abstract: A method of transmitting and receiving signals in a wireless local area network (WLAN) system and a device for the same are provided. More particularly, there are provided a method and a device for the same in which a station operating in an orthogonal frequency division multiplexing (OFDM) mode transmits and receives signals through two aggregated channels.

公开(公告)号：US20200382185A1

公开(公告)日：2020-12-03

申请号：US16634873

申请日：2018-07-23

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin PARK ,  Jinmin KIM ,  Sunwoong YUN ,  Jinsoo CHOI

IPC: H04B7/06 ,  H04B7/0452 ,  H04B7/08 ,  H04L29/12

Abstract: The present invention relates to a method for performing MU-MIMO beamforming training, the method comprising: receiving a MIMO beamforming setup frame including identification information of a station participating in MU-MIMO beamforming training, in an MU-MIMO beamforming setup subphase; receiving a BRP frame in an MU-MIMO beamforming training subphase; and performing MU-MIMO beamforming training using the BRP frame, if the identification information of the station included in the MIMO beamforming setup frame responds to the STA and a TA field and an RA field of the BRP frame are the same as a MAC address of an initiator that has transmitted the MIMO beamforming setup frame.