公开(公告)号：US10469302B2

公开(公告)日：2019-11-05

申请号：US15580598

申请日：2016-03-11

Applicant: LG ELECTRONICS INC.

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

IPC: H04L1/00 ,  H04L1/18 ,  H04L27/20 ,  H04L5/00 ,  H04L1/08 ,  H04L27/26 ,  H04L25/02 ,  H04B7/0452 ,  H04L25/03 ,  H04W84/12

Abstract: A method for receiving a signal by a station (STA) in a wireless LAN system according to an embodiment of the present invention comprises the steps of: receiving a multi-user (MU) frame including a SIG-A field, a SIG-B field and a short training field (STF), and a long training field (LTF) that provides training symbols; and performing blind-decoding of the SIG-B field using a group ID assigned to the STA, wherein the SIG-B field includes information on the number of streams assigned to each of multiple stations that receive the MU frame, and the starting position of a training symbol interval for the STA in the LTF is implicitly indicated by the number of streams assigned to each of other stations in the same group, which share the group ID with the STA, and the order in which the streams are assigned to the STA in the same group.

公开(公告)号：US10461901B2

公开(公告)日：2019-10-29

申请号：US15545664

申请日：2016-01-22

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo Choi ,  Hangyu Cho ,  Wookbong Lee ,  Kiseon Ryu

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

Abstract: Proposed are a method and a device for transmitting a signal including a data field in a wireless LAN. For example, an access point (AP) allocates, to a second station, a second frequency band adjacent to a first frequency band, wherein the second frequency band can include a plurality of resource units. In addition, a signal including the data field can be transmitted to the second station through the allocated second frequency band. Furthermore, when the first frequency band is allocated to the first station, the AP can allocate, to the second station, as a null resource unit, a resource unit adjacent to the first frequency band among the plurality of resource units.

公开(公告)号：US10412744B2

公开(公告)日：2019-09-10

申请号：US15505471

申请日：2015-08-21

Applicant: LG ELECTRONICS INC.

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

IPC: H04J3/00 ,  H04W72/08 ,  H04L1/00 ,  H04L27/34 ,  H04L27/26 ,  H04W74/04 ,  H04W84/04 ,  H04L1/16 ,  H04L5/00

Abstract: A method is provided for transmitting data performed by a station (STA) device in a Wireless Local Area Network (WLAN) system. The STA device generates a Physical Protocol Data Unit (PPDU) including a physical preamble and a data field sequentially, and transmits the PPDU. The physical preamble includes sequentially a Legacy (L)-preamble and a High Efficiency (HE)-preamble. The HE-preamble includes sequentially an HE-Signal (SIG) A field, an HE-SIG B field, an HE-Short Training Field (STF) field, and an HE-Long Training Field (LTF) field, A first Inverse Discrete Fourier Transform (IDFT)/Discrete Fourier Transform (DFT) period is applied from the L-preamble to the HE-SIG B field and a second IDFT/DFT period is applied from the HE-STF field to the data field. The second IDFT/DFT period is 4 times of the first IDFT/DFT period. The HE SIG A field includes common control information and the HE-SIG B field includes user-specific information.

公开(公告)号：US10404513B2

公开(公告)日：2019-09-03

申请号：US15840539

申请日：2017-12-13

Applicant: LG ELECTRONICS INC.

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

IPC: H04J3/06 ,  H04L27/26 ,  H04L5/00

Abstract: A method and a device for transmitting a data unit are disclosed. A method for transmitting a PPDU can comprise the steps of: generating, by an STA, the PPDU including a first portion and a second portion; and transmitting, by the STA, the PPDU, wherein the first portion is generated by performing IFFT according to a first FFT size, the second portion is generated by performing IFFT according to a second FFT size, and the first FFT size can differ from the second FFT size.

公开(公告)号：US10356784B2

公开(公告)日：2019-07-16

申请号：US15619342

申请日：2017-06-09

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04W84/12

Abstract: Proposed is a control field including allocation information regarding a resource unit (RU) in a wireless local area network (WLAN) system supporting a plurality of RUs. The control field including the allocation information regarding the RU may be included in an uplink or downlink a physical layer (PHY) protocol data unit (PPDU), and may be designed in consideration of a plurality of frequency bands. A control field corresponding to a specific frequency band may be duplicated in a different frequency band. Further, the control field corresponding to the specific frequency band may be used for scheduling of a data field corresponding to the same frequency band and a data field corresponding to the different frequency band.

公开(公告)号：US10257784B2

公开(公告)日：2019-04-09

申请号：US15517434

申请日：2016-08-05

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Jinsoo Choi ,  Hangyu Cho

IPC: H04W52/02 ,  H04L5/00 ,  H04L25/03 ,  H04L27/34 ,  H04W84/12 ,  H04L27/26 ,  H04W28/06 ,  H04B7/0413

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. A portion of the STF signal is used to transmit an uplink, and can be used for uplink MU PPDUs transmitted from a plurality of STAs. The STF signal that is disclosed, for example, is used for a 40 MHz band or an 80 MHz band, is desirably usable for the 40 MHz band, and can be generated based on a sequence in which a predetermined M sequence is repeated. The predetermined M sequence can be a binary sequence of which the length is 15 bits.

公开(公告)号：US10250361B2

公开(公告)日：2019-04-02

申请号：US15325397

申请日：2015-06-10

Applicant: LG ELECTRONICS INC.

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

IPC: H04L27/26 ,  H04L5/00 ,  H04W72/04 ,  H04W84/12 ,  H04W88/08

Abstract: Disclosed are a method and an apparatus for transmitting a data unit comprising guard intervals having different lengths. A method for transmitting a data unit in a wireless LAN comprises the steps of: a transmission STA generating a PPDU; and the transmission PPDU transmitting the PPDU to one or more reception STAs, wherein the PPDU sequentially comprises a first signal field, a second signal field, and a training field, wherein the first signal field is generated on the basis of a first IFFT size and is transmitted in a first OFDM symbol, the second signal field is generated on the basis of the first IFFT size and is transmitted in a second OFDM symbol, and the training field is generated on the basis of a second IFFT size and is transmitted in a third OFDM symbol.

公开(公告)号：US10225124B2

公开(公告)日：2019-03-05

申请号：US15329532

申请日：2015-07-02

Applicant: LG ELECTRONICS INC.

Inventor： Wookbong Lee ,  Jinsoo Choi ,  Hangyu Cho ,  Dongguk Lim ,  Eunsung Park ,  Kiseon Ryu ,  Jinyoung Chun

IPC: H04L27/26 ,  H04L1/00 ,  H04L5/00 ,  H04L27/34 ,  H04W28/04 ,  H04W84/12 ,  H04W88/02

Abstract: Disclosed is a method for a station (STA) device transmitting data in a Wireless Local Area Network (WLAN) system. The method for transmitting data, according to one embodiment of the present invention, comprises the steps of: FEC encoding transmission data; interleaving the transmission data; constellation mapping the transmission data; performing IDFT on the transmission data; and upconverting the transmission data and transmitting a transmission signal, wherein the transmission signal comprises a first part and a second part, and IDFT is performed using different FFT sizes for the first part and the second part.

公开(公告)号：US10225064B2

公开(公告)日：2019-03-05

申请号：US15518736

申请日：2015-11-19

Applicant: LG ELECTRONICS INC.

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

IPC: H04L5/00 ,  H04L27/26 ,  H04B7/0452 ,  H04L29/08 ,  H04W84/12

Abstract: A method and apparatus for transmitting frames having a long training field (LTF) for a second type of station (STA) in a wireless communication system are provided. For this, STA prepares a frame having a first part for a first type of STA and a second part for the second type of STA; wherein the second part includes multiple LTFs, when the frame is used for MU (Multiple User) transmission scheme or OFDMA (Orthogonal Frequency Divisional Multiple Access) scheme. In case a first LTF having a first number of symbols length and a second LTF having a second number of symbols length, which is greater than the first number of symbols length, are used for the multiple LTFs, the first LTF is extended such that the first LTF and the second LTF have a same number of symbols length. The STA transmits the prepared frame to one or more STAs.

公开(公告)号：US10225061B2

公开(公告)日：2019-03-05

申请号：US15319477

申请日：2015-01-28

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/26 ,  H04L1/18 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W84/12 ,  H04W88/08

Abstract: Disclosed are a method and an apparatus for receiving a frame. A method for receiving a frame in a wireless LAN comprises the steps of: an AP transmitting, to a plurality of STAs, a downlink PPDU including downlink data for each of the plurality of STAs, through a plurality of channels; and the AP receiving, from each of the plurality of STAs, a plurality of block ACK frames transmitted based on a block ACK transmission control field, wherein the downlink PPDU includes the block ACK transmission control field, and wherein each of the plurality of block ACK frames may include ACK information related to downlink data.