公开(公告)号：US20150351146A1

公开(公告)日：2015-12-03

申请号：US14759175

申请日：2013-11-06

Applicant: LG ELECTRONICS INC.

Inventor： Byungjoo LEE ,  Dongcheol KIM ,  Jinho KIM ,  Wookbong LEE ,  Hangyu CHO

IPC: H04W76/02 ,  H04W8/00

CPC classification number: H04W76/14 ,  H04W8/005 ,  H04W84/12

Abstract: The present invention relates to a wireless communication system and, more particularly, to a method and apparatus for changing services in a direct communication system. A method for setting up a session in a first wireless device supporting a Wi-Fi direct service, according to one embodiment of the present invention, can include the steps of: setting up a connection between a first wireless device and a second wireless device, which includes a provision discovery process between the first wireless device and the second wireless device for creating a session for a first service; and transmitting a request_session message from the first wireless device to the second wireless device for creating a session for a second service. Session information for the second service can be included in the request_session message.

Abstract translation: 无线通信系统技术领域本发明涉及一种无线通信系统，更具体地，涉及一种用于在直接通信系统中改变业务的方法和装置。 根据本发明的一个实施例的用于在支持Wi-Fi直接业务的第一无线设备中建立会话的方法可以包括以下步骤：建立第一无线设备和第二无线设备之间的连接， 其包括在所述第一无线设备和所述第二无线设备之间的用于创建用于第一服务的会话的配置发现过程; 以及从第一无线设备向第二无线设备发送请求会话消息，以创建用于第二服务的会话。 第二个服务的会话信息可以包含在request_session消息中。

公开(公告)号：US20220311562A1

公开(公告)日：2022-09-29

申请号：US17833259

申请日：2022-06-06

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung PARK ,  Wookbong LEE ,  Hangyu CHO

IPC: H04L5/00

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：US20200045723A1

公开(公告)日：2020-02-06

申请号：US16508237

申请日：2019-07-10

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Kiseon RYU ,  Wookbong LEE ,  Hangyu CHO

IPC: H04W72/12 ,  H04L5/00 ,  H04W72/04 ,  H04W74/00 ,  H04W74/08

Abstract: Disclosed is an uplink (UL) multi-user (MU) transmission method by a station (STA) in a wireless LAN (WLAN) system. The uplink multi-user transmission method by an STA in a WLAN system according to the present invention includes the steps of: receiving a trigger frame including resource unit allocation information for orthogonal frequency division multiple access (OFDMA) transmission; transmitting a UL MU physical protocol data unit (PPDU) frame, on the basis of frequency resource allocation information; and receiving an ACK frame for the UL MU PPDU.

公开(公告)号：US20200036565A1

公开(公告)日：2020-01-30

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

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：US20190208517A1

公开(公告)日：2019-07-04

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: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04W72/048 ,  H04L1/00 ,  H04L1/0001 ,  H04L1/0003 ,  H04L5/0046 ,  H04L27/26 ,  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：US20190124657A1

公开(公告)日：2019-04-25

申请号：US16230496

申请日：2018-12-21

Applicant: LG ELECTRONICS INC.

Inventor： Suhwook KIM ,  Kiseon RYU ,  Wookbong LEE ,  Jinsoo CHOI ,  Hangyu CHO ,  Jeongki KIM ,  Giwon PARK

IPC: H04W72/04 ,  H04W74/08 ,  H04L5/00

Abstract: A method and a device for transmitting a frame in a wireless LAN are disclosed. A method for transmitting a data unit in a wireless LAN can comprise the steps of: transmitting, by an AP, an RTS frame for medium protection to a plurality of STAs through a plurality of channels; receiving, by the AP, a CTS frame in response to the RTS frame from each of the plurality of STAs through a first allocation channel, wherein the first allocation channel is at least one of the plurality of channels, which is determined on the basis of the RTS frame; and transmitting, by the AP, downlink data to each of the plurality of STAs through a second allocation channel on the basis of OFDMA in overlapped time resources, wherein the second allocation channel is at least one of the plurality of channels.

公开(公告)号：US20190090224A1

公开(公告)日：2019-03-21

申请号：US16197074

申请日：2018-11-20

Applicant: LG ELECTRONICS INC.

Inventor： Jinsoo CHOI ,  Hangyu CHO ,  Wookbong LEE ,  Dongguk LIM

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

Abstract: Disclosed are a method and a device for allocating wireless resources for transmitting or receiving data in a wireless LAN. The method for allocating the wireless resources in the wireless LAN can comprise the steps of: allocating, by an access point (AP), each of the plurality of wireless resources for each of a plurality of stations (STAs) over the entire bandwidth; and transmitting, by the AP, a physical protocol data unit (PPDU) to each of the plurality of STAs through each of the plurality of wireless resources, wherein each of the plurality of wireless resources can be a combination of a plurality of wireless resource units defined as having different sizes from each other on a frequency axis.

公开(公告)号：US20180145811A1

公开(公告)日：2018-05-24

申请号：US15558950

申请日：2016-03-14

Applicant: LG ELECTRONICS INC.

Inventor： Eunsung PARK ,  Wookbong LEE ,  Jinsoo CHOI ,  Hangyu CHO

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

CPC classification number: H04L5/0053 ,  H04L5/001 ,  H04L5/005 ,  H04L5/0051 ,  H04L27/2613 ,  H04L27/2692 ,  H04L29/08018 ,  H04L69/323 ,  H04W72/0453 ,  H04W84/12

Abstract: A method for transmitting a PPDU of an STA device, including generating an HE-STF sequence, generating a PPDU configured on the basis of the HE-STF sequence and including an HE-STF field having periodicity of 1.6 μs, and transmitting the PPDU such that the HE-STF field included in the PPDU is transmitted via a channel, wherein the HE-STF sequence is configured on the basis of an M sequence, and when the channel is a 20 MHz channel, the HE-STF sequence may be configured to have a structure of {the M Sequence, 0, 0, 0, 0, 0, 0, 0, the M sequence}, when the channel is a 40 MHz channel, the HE-STF sequence may be configured on the basis of a structure in which the HE-STF sequence of the 20 MHz channel is duplicated twice and frequency-shifted, and when the channel is a 80 MHz channel, the HE-STF sequence may be configured on the basis of a structure in which the HE-STF sequence of the 40 MHz channel is duplicated twice and frequency-shifted.

公开(公告)号：US20180138959A1

公开(公告)日：2018-05-17

申请号：US15567073

申请日：2016-04-15

Applicant: LG ELECTRONICS INC.

Inventor： Jinyoung CHUN ,  Kiseon RYU ,  Hangyu CHO ,  Wookbong LEE ,  Jinsoo CHOI

IPC: H04B7/06

Abstract: According to an embodiment of present invention, a sounding method for an STA (Station) to transmit feedback information of a downlink (DL) channel state in a WLAN (Wireless LAN) system according to one embodiment of the present invention comprises receiving an NDPA (NDP announcement) frame that notifies of transmission of an NDP (Null Data Packet) frame, receiving the NDP frame, receiving a trigger frame including resource allocation information allocated to the STA, generating channel state information on the basis of a training field included in the NDP frame; and performing uplink (UL) multi-user (MU) transmission of the feedback frame including the channel state information by using a frequency resource indicated by the resource allocation information.

公开(公告)号：US20180091347A1

公开(公告)日：2018-03-29

申请号：US15561726

申请日：2015-11-19

Applicant: LG ELECTRONICS INC.

Inventor： Wookbong LEE ,  Hangyu CHO ,  Jinsoo CHOI

IPC: H04L27/26 ,  H04W28/06 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04L27/2613 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2602 ,  H04W28/06 ,  H04W72/042 ,  H04W72/0446 ,  H04W84/12

Abstract: Disclosed herein is a station (STA) device of a wireless LAN (WLAN) system. The STA device includes a radio frequency (RF) unit transmitting and receiving a radio signal; and a processor controlling the RF unit. The processor may generate a high efficiency (HE) physical protocol data unit (PPDU) including a physical preamble and a data field and transmit the PPDU using the RF unit.