公开(公告)号：US11368269B2

公开(公告)日：2022-06-21

申请号：US16596345

申请日：2019-10-08

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Wookbong Lee ,  Hangyu Cho

IPC: H04L5/00 ,  H04L27/26 ,  H04B7/0413 ,  H04L69/323 ,  H04L69/324 ,  H04W84/12

Abstract: 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：US11206623B2

公开(公告)日：2021-12-21

申请号：US16643428

申请日：2018-08-24

Applicant: LG ELECTRONICS INC.

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

IPC: H04W56/00 ,  H04W84/12

Abstract: A method for receiving a WUR PPDU in WLAN by an STA according to an embodiment of the present invention may comprise the steps of: receiving a WUR PPDU including a WUR preamble and a payload; acquiring information on a data rate applied to the payload, on the basis of a synchronization sequence of the WUR preamble; and decoding the payload on the basis of the information on the data rate, wherein the STA determines that the data rate applied to the payload is 250 kbps when the synchronization sequence is a first sequence having a length of 32 bits, and determines that the data rate applied to the payload is 62.5 kbps when the synchronization sequence is a second sequence having a length of 64 bits.

公开(公告)号：US11096157B2

公开(公告)日：2021-08-17

申请号：US16518601

申请日：2019-07-22

Applicant: LG ELECTRONICS INC.

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

IPC: H04W72/04 ,  H04L1/00 ,  H04W84/12 ,  H04W4/70 ,  H04L1/06 ,  H04W28/10 ,  H04L5/00 ,  H04W72/08 ,  H04B7/06 ,  H04W88/08

Abstract: Disclosed herein is an operating method of a station (STA) in a wireless LAN (WLAN) system. The method includes receiving a downlink (DL) physical protocol data unit (PPDU) and sending an uplink (UL) PPDU as a response to the DL PPDU. The DL PPDU may include at least one MAC protocol data unit (MPDU) and the at least one MPDU may include a first high efficiency (HE) control field. The UL PPDU may include at least one MAC protocol data unit (MPDU) and the at least one MPDU may include a second high efficiency (HE) control field. The each of the first and second HE control fields corresponds to an HT control field and comprises a plurality of aggregated HE control subfield. The HT control field includes VHT subfield value set to “1” and HE subfield value set to “1”.

公开(公告)号：US10979267B2

公开(公告)日：2021-04-13

申请号：US16590181

申请日：2019-10-01

Applicant: LG ELECTRONICS INC.

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

IPC: H04L27/26 ,  H04W84/12

Abstract: Disclosed is a method for transmitting a preamble in a wireless LAN system, and a station device for performing the same. To this end, a station for transmitting a preamble configures a wireless frame including a first type terminal frame portion, and a second type terminal frame portion. The first type terminal frame portion includes a first type terminal preamble including a first type terminal short training field (STF) and a first type terminal long training field (LTF), and the second type terminal frame portion includes a second type terminal preamble including a second type terminal SFT and a second type terminal LTF. Here, the station configures the second type terminal preamble by allocating sequence components at an interval of an integer number of tones in a frequency domain and transmits the configured wireless frame to another station.

公开(公告)号：US10791519B2

公开(公告)日：2020-09-29

申请号：US16248681

申请日：2019-01-15

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung Park ,  Jinsoo Choi ,  Hangyu Cho

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

Abstract: A method and an apparatus for generating an STF signal usable in a wireless LAN system is provided. 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 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 15 bits.

公开(公告)号：US10764005B2

公开(公告)日：2020-09-01

申请号：US15521552

申请日：2016-02-23

Applicant: LG ELECTRONICS INC.

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

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

Abstract: The present specification presents a technique for transmitting a PPDU by using a resource unit including carriers of different sizes. For example, a PPDU is transmitted by using five frequency bands, a left guard band, and a right guard band. Null subcarriers can be included in the five frequency bands according to the type of included resource unit. The null subcarriers can be the leftmost side or the rightmost side of each frequency band, and the number of included null subcarriers can be determined according to the size of the carrier included in each resource unit or the type of resource unit. A frequency band including DC carriers can include only one resource unit having a discontinuous carrier, and null subcarriers can be further included around the DC carriers.

公开(公告)号：US10673665B2

公开(公告)日：2020-06-02

申请号：US15327365

申请日：2015-08-04

Applicant: LG ELECTRONICS INC.

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

IPC: H04W84/12 ,  H04W72/04 ,  H04L27/26 ,  H04L5/00 ,  H04L1/00

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; constellation mapping the transmission data; inserting a pilot tone in the transmission data; performing Inverse Discrete Fourier Transform (IDFT) on the transmission data; and upconverting the transmission data and transmitting a transmission signal, wherein, if an Orthogonal Frequency Division Multiple Access (OFDMA) scheme is applied to the transmission signal, the transmission signal comprises at least one tone unit which is the unit of subcarrier allocation of the OFDMA scheme.

公开(公告)号：US10667271B2

公开(公告)日：2020-05-26

申请号：US16292849

申请日：2019-03-05

Applicant: LG ELECTRONICS INC.

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

IPC: H04W4/00 ,  H04W72/04 ,  H04L1/00 ,  H04L27/26 ,  H04L5/00 ,  H04W84/12

Abstract: The present invention relates to a method for transmitting a frame in a wireless communication system, in particular, a high density wireless LAN system, and a station apparatus for performing the same. To this end, a station for transmitting a frame configures a radio frame for a second type station, including a frame part for a first type station and a frame part for the second type station, wherein the frame part for the second type station includes a first signaling field (SIG A) for the second type station and a second signaling field (SIG B) for the second type station. The SIG A for the second type station includes modulation and coding scheme (MCS) information applied to the SIG B for the second type station, and the MCS level applied to the SIG B for the second type station supports an MCS having level than the lowest MCS level defined for the first type station.

公开(公告)号：US10536932B2

公开(公告)日：2020-01-14

申请号：US15241010

申请日：2016-08-18

Applicant: LG ELECTRONICS INC.

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

IPC: H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04L5/00 ,  H04W4/70 ,  H04W28/10 ,  H04W72/04 ,  H04W72/08 ,  H04W84/12 ,  H04W88/08

Abstract: Disclosed herein is an operating method of a station (STA) in a wireless LAN (WLAN) system. The method includes receiving a downlink (DL) physical protocol data unit (PPDU) and sending an uplink (UL) PPDU as a response to the DL PPDU. The DL PPDU may include at least one MAC protocol data unit (MPDU) and the at least one MPDU may include a first high efficiency (HE) control field. The UL PPDU may include at least one MAC protocol data unit (MPDU) and the at least one MPDU may include a second high efficiency (HE) control field. The each of the first and second HE control fields corresponds to an HT control field and comprises a plurality of aggregated HE control subfield. The HT control field includes VHT subfield value set to “1” and HE subfield value set to “1”.

公开(公告)号：US10411931B2

公开(公告)日：2019-09-10

申请号：US15518716

申请日：2015-11-02

Applicant: LG ELECTRONICS INC.

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

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

Abstract: Disclosed in the present invention are a method for transreceiving a physical protocol data unit (PPDU) in a wireless communication system and a device for same. More specifically, a method for transmitting a physical protocol data unit (PPDU) using a wireless communication device in a wireless communication system comprises the steps of: generating a PPDU including a legacy preamble, an HE-preamble, and a data field; and transmitting the generated PPDU, wherein a minimum integer number of pilot patterns are defined, wherein the minimum integer number is larger than the value obtained by dividing the total number of subcarriers constituting the data field or a fast Fourier transform (FFT) size value used when generating the PPDU by the total number of pilots, wherein specific pilot patterns from among the pilot patterns are allocated to each symbol of the data field, and wherein the index of a subcarrier to which the pilot is mapped may be determined by the pilot patterns.