公开(公告)号：US09832760B2

公开(公告)日：2017-11-28

申请号：US15463576

申请日：2017-03-20

Applicant: LG ELECTRONICS INC.

Inventor： Yong Ho Seok

IPC: H04L29/04 ,  H04W72/04 ,  H04B7/0452 ,  H04L27/26 ,  H04L1/00 ,  H04W84/12

CPC classification number: H04W72/0406 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0031 ,  H04L1/1607 ,  H04L27/2626 ,  H04W72/046 ,  H04W84/12

Abstract: A method for receiving data by a receiving station by using a multi-user multiple input multiple output (MU-MIMO) in a wireless local area network system, the method includes receiving, via a transceiver in the receiving station, a physical layer convergence procedure (PLCP) protocol data unit (PPDU) from a transmitting station, the PPDU including a bundled interface field, a modulation and coding scheme (MCS) index field and a data field, wherein the bundled interface field indicates a number of a plurality of spatial streams allocated to the receiving station among a plurality of receiving stations, and indicates a total number of spatial streams allocated to the plurality of receiving stations that receive the PPDU, and wherein the MCS index field indicates a same MCS index used for modulating and coding the plurality of spatial streams allocated to the receiving station; and demodulating and decoding, via a processor in the receiving station and by using an MCS scheme indicated by the MCS index field, the data field received via the plurality of spatial streams indicated by the bundled interface field.

公开(公告)号：US09807817B2

公开(公告)日：2017-10-31

申请号：US15138700

申请日：2016-04-26

Applicant: LG ELECTRONICS INC.

Inventor： Byeong Woo Kang ,  Ill Soo Sohn ,  Dae Won Lee ,  Yong Ho Seok

IPC: H04B17/40 ,  H04W84/12 ,  H04B7/0452 ,  H04L1/00 ,  H04L1/16

CPC classification number: H04W84/12 ,  H04B7/0452 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0031 ,  H04L1/1685

Abstract: A method of link adaptation performed by an access point supporting multi user (MU) multiple input multiple output (MIMO) in wireless local area network system is provided. The method includes transmitting, to a first station, a physical layer convergence procedure (PLCP) protocol data unit (PPDU) containing a modulation and coding scheme (MCS) request (MRQ) and receiving, from the first station, a MCS feedback (MFB) in response to the MRQ, wherein the first station is one of destination stations of MU-MIMO transmission performed by the access point, and the MFB includes a recommended MCS value computed, by the first station, on the assumption that the first station, as a member of the destination stations, receives data transmitted over at least one spatial stream allocated to the first station in MU-MIMO transmission.

公开(公告)号：US09807757B2

公开(公告)日：2017-10-31

申请号：US15251608

申请日：2016-08-30

Applicant: LG ELECTRONICS INC.

Inventor： Yong Ho Seok

IPC: H04W72/04 ,  H04L1/00 ,  H04W56/00 ,  H04W80/02 ,  H04L5/00 ,  H04W72/02 ,  H04W88/06 ,  H04W84/12

CPC classification number: H04W72/042 ,  H04L1/0083 ,  H04L5/0053 ,  H04L5/0058 ,  H04W56/001 ,  H04W72/02 ,  H04W72/04 ,  H04W72/0446 ,  H04W80/02 ,  H04W84/12 ,  H04W88/06

Abstract: A method is provided for transmitting a physical layer protocol data unit (PPDU) in a wireless communication system. For a first data stream associated with a first PPDU to be transmitted via a first channel, a wireless device includes a first data block, a first header indicating a first modulation and coding scheme (MCS), and a first physical layer service data unit (PSDU) in the first data stream. For a second data stream associated with a second PPDU to be transmitted via a second channel, the wireless device includes a second data block, a second header indicating a second MCS and a second PSDU in the second data stream. The wireless device performs a padding procedure to at least one of the first data stream and the second data stream, and transmits the first data stream and the second data stream by using the first PPDU and the second PPDU.

公开(公告)号：US09780937B2

公开(公告)日：2017-10-03

申请号：US14993881

申请日：2016-01-12

Applicant: LG ELECTRONICS INC.

Inventor： Dae Won Lee ,  Ill Soo Sohn ,  Yong Ho Seok

IPC: H04L5/00 ,  H04B7/06 ,  H04W84/12 ,  H04L1/18 ,  H04W16/28 ,  H04B7/0452

CPC classification number: H04L5/0053 ,  H04B7/0452 ,  H04B7/0636 ,  H04L1/1812 ,  H04L5/0023 ,  H04W16/28 ,  H04W84/12

Abstract: A method, performed by a transceiver, is provided for channel sounding in a wireless local area network. A null data packet announcement (NDPA) frame is received from a transmitter to initiate the channel sounding. A null data packet (NDP) is received from the transmitter, the NDP following the NDPA frame. First feedback data split into a plurality of segments in a single aggregated medium access control protocol data unit (A-MPDU) is transmitted. A retransmission request is received from the transmitter, the retransmission request including a segment retransmission bitmap field indicating at least one segment of the plurality of segments for retransmission. In response to the retransmission request, second feedback data including the at least one segment indicated in the segment retransmission bitmap field is transmitted.

公开(公告)号：US09716574B2

公开(公告)日：2017-07-25

申请号：US14694346

申请日：2015-04-23

Applicant: LG ELECTRONICS INC.

Inventor： Byeong Woo Kang ,  Dong Wook Roh ,  Yong Ho Seok ,  Yu Jin Noh ,  Bong Hoe Kim ,  Dae Won Lee

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

CPC classification number: H04L5/0048 ,  H04L27/2628 ,  H04W84/12 ,  H04W99/00

Abstract: A method of transmitting a training signal in a Wireless Local Area Network (WLAN) system includes generating one or more first training signals for a first destination station and one or more second training signals for a second destination station by applying a mapping matrix P to a training signal generation sequence, mapping the first training signals and the second training signals to a plurality of antennas according to an antenna mapping matrix, and performing Inverse Fast Fourier Transform (IFFT) on each of the first training signals and the second training signals mapped to the plurality of antennas and transmitting the training signals through the plurality of antennas.

公开(公告)号：US09706576B2

公开(公告)日：2017-07-11

申请号：US14796466

申请日：2015-07-10

Applicant: LG ELECTRONICS INC.

Inventor： Yong Ho Seok

IPC: H04W74/08 ,  H04W4/06 ,  H04W84/12

CPC classification number: H04W74/0816 ,  H04W4/06 ,  H04W84/12

Abstract: A method and apparatus of transmitting a multicast frame in a wireless communication system is provided. The method comprises transmitting a request to send (RTS) frame to stations (STAs) included in a multicast group by using an omni-directional antenna, and receiving a clear to send (CTS) frame transmitted by the STAs included in the multicast group in response to the RTS frame, and transmitting the multicast frame to the STAs included in the multicast group by using a directional antenna.

公开(公告)号：US09699734B2

公开(公告)日：2017-07-04

申请号：US14356068

申请日：2012-11-19

Applicant: LG ELECTRONICS INC.

Inventor： Yong Ho Seok ,  Hyang Sun You ,  Jong Hyun Park

IPC: H04W52/02 ,  H04W74/08 ,  H04W76/04 ,  H04L12/825 ,  H04W84/12

CPC classification number: H04W52/0229 ,  H04L47/266 ,  H04W52/0216 ,  H04W74/08 ,  H04W76/28 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/168 ,  Y02D70/21 ,  Y02D70/22

Abstract: The present invention relates to methods of transmitting and receiving a frame, which are performed by a station operating in a power save mode in a wireless LAN system. The method includes: transmitting a poll frame requesting the transmission of a buffered frame to an access point AP, wherein the poll frame includes a sustain time field that indicates a service section; and receiving at least one buffered frame from the AP within the sustain time in response to the poll frame. A method is provided for transmitting and receiving a frame executed by a station (STA) operating in a power sub mode in a wireless LAN system. The method includes transmitting a first poll frame requesting the transmission of a buffered frame to an access point AP, receiving an acknowledgement ACK frame in response to the first poll frame, and receiving at least one buffered frame from the AP.

公开(公告)号：US09661629B2

公开(公告)日：2017-05-23

申请号：US15010348

申请日：2016-01-29

Applicant: LG ELECTRONICS INC.

Inventor： Yu Jin Noh ,  Byeong Woo Kang ,  Dae Won Lee ,  Yong Ho Seok

IPC: H04W72/04 ,  H04B7/0452 ,  H04W84/12 ,  H04W28/20 ,  H04W88/02 ,  H04W74/08

CPC classification number: H04W72/0446 ,  H04B7/0452 ,  H04W28/20 ,  H04W72/04 ,  H04W72/0406 ,  H04W74/0808 ,  H04W84/12 ,  H04W88/02 ,  H04W88/08

Abstract: A method of transmitting a data frame by a station in a wireless local area network (WLAN), A station obtains a transmission opportunity (TXOP) for a bandwidth. The TXOP indicates an interval of time during which the station has a right to initiate frame exchange sequences onto a wireless medium. The station selects a transmit bandwidth parameter of a non-initial data unit of a plurality of data units from available bandwidth parameters. The available bandwidth parameters include a first available bandwidth parameter which is same as a transmit bandwidth parameter of a preceding data unit of the plurality of data units and a second available bandwidth parameter which is narrower than a transmit bandwidth parameter of the preceding data unit. The station transmits, during the TXOP, the non-initial data unit according to the transmit bandwidth parameter of the non-initial data unit.

公开(公告)号：US09538368B2

公开(公告)日：2017-01-03

申请号：US14357963

申请日：2012-09-26

Applicant: LG ELECTRONICS INC.

Inventor： Yong Ho Seok ,  Jong Hyun Park ,  Hyang Sun You

IPC: H04W8/26 ,  H04W74/04 ,  H04W84/12

CPC classification number: H04W8/26 ,  H04W74/04 ,  H04W84/12

Abstract: Provided is a method for transceiving data in a wireless LAN system on the basis of a station (STA). The method comprises: receiving an allocation for an association ID (AID) by associating with an access point (AP); and exchanging data with the AP during the channel access period for an STA group comprising the STA. The STA group is grouped on the basis of the AID.

Abstract translation: 提供了一种用于基于站（STA）在无线LAN系统中收发数据的方法。 该方法包括：通过与接入点（AP）相关联来接收关联ID（AID）的分配; 并且在针对包括STA的STA组的信道接入周期期间与AP交换数据。 基于AID对STA组进行分组。

公开(公告)号：US09497057B2

公开(公告)日：2016-11-15

申请号：US14362860

申请日：2012-12-06

Applicant: LG ELECTRONICS INC.

Inventor： Hyang Sun You ,  Yong Ho Seok ,  Jong Hyun Park

IPC: H04L27/26 ,  H04L25/02 ,  H04L5/00 ,  H04W84/12 ,  H04W88/08 ,  H04L27/20

CPC classification number: H04L27/2607 ,  H04L5/005 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/2032 ,  H04L27/261 ,  H04W84/12 ,  H04W88/08

Abstract: The present invention relates to a method for performing channel sounding by means of an access point (AP) in a wireless LAN system. The method includes the steps of transmitting a null data packet announcement (NDPA) frame to notify that an NDP is to be transmitted, transmitting the NDP, and receiving a feedback frame from a station (STA). The NDP includes a signal field. The signal field of the NDP is transmitted through two orthogonal frequency division multiplexing (OFDM) symbols. One of the two OFDM symbols is a repeated OFDM symbol signifying that the other is repeated.

Abstract translation: 本发明涉及一种在无线LAN系统中通过接入点（AP）进行信道探测的方法。 该方法包括以下步骤：发送空数据分组公告（NDPA）帧以通知NDP将被发送，发送NDP，以及从站（STA）接收反馈帧。 NDP包括一个信号字段。 NDP的信号字段通过两个正交频分复用（OFDM）符号传输。 两个OFDM符号中的一个是重复的OFDM符号，表示另一个被重复。