公开(公告)号：US10602546B2

公开(公告)日：2020-03-24

申请号：US16115196

申请日：2018-08-28

申请人： LG ELECTRONICS INC.

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

IPC分类号： H04W74/08 ,  H04W52/14 ,  H04W72/04 ,  H04W84/12

摘要： A device and method for transmitting a frame in a wireless LAN, with the method including the steps of: transmitting, by an AP, an RTS frame for medium protection to a first STA set; receiving, by the AP, CTS frames, in sequence, from each of a plurality of STAs included in a second STA set in response to the RTS frame, the second STA set being included in the first STA set; and transmitting, by the AP, each of a plurality of PPDUs to each of the plurality of STAs via each of a plurality of subbands for each of the plurality of STAs on an overlapping time resource.

公开(公告)号：US10530524B2

公开(公告)日：2020-01-07

申请号：US15532049

申请日：2015-05-19

申请人： LG ELECTRONICS INC.

发明人： Suhwook Kim ,  Kiseon Ryu ,  Jinyoung Chun ,  Wookbong Lee ,  Jeongki Kim ,  Hangyu Cho

IPC分类号： H04L1/00 ,  H04L1/16 ,  H04L5/00 ,  H04W72/04 ,  H04L21/00 ,  H04W84/12 ,  H04L1/12

摘要： Disclosed are a method and a device for recovering an error without the retransmission of a data frame in a wireless LAN. The method for recovering an error in a wireless LAN may comprise the steps in which: a sender STA transmits a data frame to a receiver STA; if the sender STA does not receive a block ACK frame of the data frame from the receiver STA, the sender STA determines the reason for the non-reception of the data frame; if the sender STA determines that the reason for the non-reception of the data frame is the failure of transmission of the block ACK frame after the receiver STA receives the data frame, the sender STA transmits a PBAR data frame to the receiver STA; and the sender STA receives a PBAR block ACK frame from the receiver STA as a response to the PBAR data frame.

公开(公告)号：US10512088B2

公开(公告)日：2019-12-17

申请号：US16275248

申请日：2019-02-13

申请人： LG ELECTRONICS INC.

发明人： Jinsoo Choi ,  Hangyu Cho ,  Wookbong Lee

IPC分类号： H04W72/04 ,  H04W84/12 ,  H04W72/08 ,  H04L5/00

摘要： Disclosed is a method and apparatus for allocating a wireless resource in order to prevent interference in a wireless LAN. A method for allocating a wireless resource in a wireless LAN may comprise the steps of: allocating, by an AP, a plurality of wireless resources for a plurality of STAs included in a BSS, in the entire bandwidth, respectively; and transmitting, by the AP, a PPDU to the plurality of STAs through the plurality of wireless resources, respectively, wherein each of the plurality of wireless resources is a combination of a plurality of wireless units defined in different sizes on a frequency axis, and each of the plurality of wireless resources can be determined in consideration of the size of the bandwidth of at least one STA supporting a bandwidth smaller than the size of the entire bandwidth from among the plurality of STAs.

公开(公告)号：US10469302B2

公开(公告)日：2019-11-05

申请号：US15580598

申请日：2016-03-11

申请人： LG ELECTRONICS INC.

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

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

摘要： 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

申请人： LG ELECTRONICS INC.

发明人： Jinsoo Choi ,  Hangyu Cho ,  Wookbong Lee ,  Kiseon Ryu

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

摘要： 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：US10439780B2

公开(公告)日：2019-10-08

申请号：US15548706

申请日：2015-11-30

申请人： LG ELECTRONICS INC.

发明人： Eunsung Park ,  Wookbong Lee ,  Hangyu Cho

IPC分类号： H04L5/00 ,  H04L27/26 ,  H04W84/12 ,  H04B7/0413 ,  H04L29/08

摘要： Disclosed are a method for multi-user transmission and reception in a wireless communication system and a device for same. More particularly, a method for performing multi-user (MU) transmission by a station (STA) device in a wireless communication system comprises the steps of: generating a high efficiency-long training field (HE-LTF) sequence in a frequency domain in accordance with an MU transmission bandwidth; and transmitting a physical protocol data unit (PPDU) which comprises one or more symbols to which the HE-LTF sequence is mapped, wherein the HE-LTF sequence can be generated by multiplying one row of a P matrix to a length unit of a row of the P matrix in a predetermined sequence.

公开(公告)号：US10425269B2

公开(公告)日：2019-09-24

申请号：US15527289

申请日：2015-11-17

申请人： LG ELECTRONICS INC.

发明人： Kilbom Lee ,  Wookbong Lee ,  Eunsung Park ,  Hangyu Cho ,  Jiwon Kang

IPC分类号： H04L27/26 ,  H04L27/00 ,  H04L27/227 ,  H04L5/00

摘要： Disclosed is a CFO estimation method, which generates a first function defined by a received signal of two sequential OFDM symbols for a specific subcarrier, generates a second function defined on the basis of signs and magnitudes of a real number part and an imaginary number part of the first function, repeats the steps of generating the first function and the second function for all of a subcarrier set, and determines, as a residual CFO, a phase of a third function obtained by adding up the results of the repetition.

公开(公告)号：US10412744B2

公开(公告)日：2019-09-10

申请号：US15505471

申请日：2015-08-21

申请人： LG ELECTRONICS INC.

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

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

摘要： 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

申请人： LG ELECTRONICS INC.

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

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

摘要： 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：US10250361B2

公开(公告)日：2019-04-02

申请号：US15325397

申请日：2015-06-10

申请人： LG ELECTRONICS INC.

发明人： Jinsoo Choi ,  Wookbong Lee ,  Dongguk Lim ,  Hangyu Cho

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

摘要： 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.