公开(公告)号：US11387877B2

公开(公告)日：2022-07-12

申请号：US17372750

申请日：2021-07-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eunsung Jeon ,  Wookbong Lee ,  Myeongjin Kim ,  Jonghun Han

IPC: H04B7/06 ,  H04L25/02 ,  H04W84/12

Abstract: A beamformee device includes a channel estimator, first and second beamforming matrix providers and a dimension reduction unit. The channel estimator receives a NDP through a channel, and obtains channel information of the channel based on the NDP. The first beamforming matrix provider provides wideband beamforming matrices based on the channel information. The dimension reduction unit generates equivalent channel information based on the wideband beamforming matrices. The second beamforming matrix provider provides beamforming matrices based on the equivalent channel information. The wideband beamforming matrices and the subcarrier beamforming matrices are fed back to the beamformer device. Any one or any combination of the plurality of wideband beamforming matrices and the plurality of subcarrier beamforming matrices are selected from codebooks.

公开(公告)号：US10998944B2

公开(公告)日：2021-05-04

申请号：US16189156

申请日：2018-11-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Wook Bong Lee ,  Tianyu Wu ,  Eunsung Jeon ,  Sungsoo Kim

IPC: H04B17/336 ,  H04B7/0417 ,  H04B7/06 ,  H04B7/0452

Abstract: A method in a wireless station in communication with an access point over a communication channel includes receiving a channel estimation matrix; determining a beamforming matrix using the channel estimation matrix, the beamforming matrix being generated for a plurality of down-sampled feedback indices; the beamforming matrix including beamforming weights for one or more antennas associated with the access point, each beamforming weight being a complex value including an amplitude and a phase; setting the phase of the beamforming weight for a last antenna associated with the last feedback index of the beamforming matrix to zero and rotating the phase of each beamforming weight for each of the other antennas; performing smoothing of the beamforming matrix for each feedback index by normalizing each column vector of the beamforming matrix; compressing the smoothed beamforming matrix; and providing the smoothed beamforming matrix as output.

公开(公告)号：US20250158852A1

公开(公告)日：2025-05-15

申请号：US18929939

申请日：2024-10-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Eunsung Jeon ,  Myeongjin Kim ,  Jungwoon Lee

IPC: H04L25/02 ,  H04B7/0417 ,  H04B17/336 ,  H04W84/12

Abstract: An operating method of a first apparatus, communicating with a second apparatus in a wireless local area network (WLAN) system including the first apparatus and the second apparatus, includes receiving a null data packet (NDP) from the second apparatus, estimating channels corresponding to a plurality of streams of each of a plurality of subcarriers by using the NDP, decomposing singular values of the estimated channels to generate beam steering matrixes corresponding to the plurality of streams of each of the plurality of subcarriers, performing, by stream units, cross correlation between beam steering matrixes corresponding to an adjacent subcarrier of the plurality of subcarriers, determining interpolation target subcarriers, based on cross correlation values corresponding to the plurality of streams of each of the plurality of subcarriers, and generating beamforming feedback, based on the determined interpolation target subcarriers.

公开(公告)号：US12301508B2

公开(公告)日：2025-05-13

申请号：US18306617

申请日：2023-04-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Myeongjin Kim ,  Wookbong Lee ,  Eunsung Jeon ,  Jonghun Han

IPC: H04L5/00 ,  H04W72/0453 ,  H04B7/0452 ,  H04W84/12

Abstract: Provided is a method of wireless communication by a first device, the method including allocating multi-resource unit (MRU) to at least one second device; generating at least one resource unit (RU) allocation sub-field respectively corresponding to at least one sub-channel included in the MRU; and transmitting the at least one RU allocation sub-field to the at least one second device. Generating the at least one RU allocation sub-field may include identifying a first RU including a first sub-channel to indicate a zero user in the MRU; and generating a first RU allocation sub-field corresponding to the first sub-channel based on the first RU.

公开(公告)号：US12231190B2

公开(公告)日：2025-02-18

申请号：US17358386

申请日：2021-06-25

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eunsung Jeon ,  Myeongjin Kim ,  Wookbong Lee ,  Chulho Chung ,  Jonghun Han

IPC: H04L5/00 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/06 ,  H04W72/04 ,  H04W80/02 ,  H04W84/12

Abstract: A method of a first device communicating with at least one second device in a wireless local area network (WLAN) system includes the first device generating a null data packet announcement (NDPA) frame and transmitting the NDPA frame to the at least one second device. The generating of the NDPA frame includes identifying a protocol version of the at least one second device and the NDPA frame includes an NDPA version subfield generated based on the protocol version.

公开(公告)号：US12224817B2

公开(公告)日：2025-02-11

申请号：US17530047

申请日：2021-11-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Eunsung Jeon ,  Chulho Chung ,  Myeongjin Kim ,  Jonghun Han

IPC: H04B7/0417 ,  H04B7/06 ,  H04L5/00 ,  H04W84/12

Abstract: A method for a first device to communicate with at least one second device in a wireless local area network (WLAN) system includes providing a first trigger frame to at least one second device, the first trigger frame requesting at least one sounding null data packet (NDP), providing a feedback frame to the at least one second device, the feedback frame including feedback information generated based on the at least one sounding NDP, and providing a second trigger frame to the at least one second device, the second trigger frame requesting at least one beamformed physical layer protocol data unit (PPDU), each of the first trigger frame and the feedback frame including a sounding dialog token number field having a sounding sequence number.

公开(公告)号：US11979866B2

公开(公告)日：2024-05-07

申请号：US17467742

申请日：2021-09-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eunsung Jeon ,  Wookbong Lee ,  Myeongjin Kim ,  Chulho Chung ,  Jonghun Han

IPC: H04L12/28 ,  H04W72/0453 ,  H04J1/16 ,  H04W84/12

CPC classification number: H04W72/0453 ,  H04W84/12

Abstract: The present disclosure provides a wireless communication method. The wireless communication method includes a first apparatus communicating with at least one second apparatus in a wireless local area network (WLAN) system. The wireless communication method generates an aggregated physical layer protocol data unit (PPDU) including a first null data packet (NDP) based on a first protocol standard and a second NDP based on a second protocol standard and transmits the aggregated PPDU to the at least one second apparatus, wherein the first NDP and the second NDP have a same duration in different frequency bands.

公开(公告)号：US20220345349A1

公开(公告)日：2022-10-27

申请号：US17659603

申请日：2022-04-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Myeongjin Kim ,  Jinmin Kim ,  Eunsung Jeon ,  Wookbong Lee ,  Chulho Chung ,  Jonghun Han

IPC: H04L27/26 ,  H04J11/00 ,  H04L27/00

Abstract: A second apparatus for wireless communication includes: a transceiver; and a processing circuit configured to receive, from a first apparatus via the transceiver, a physical layer protocol data unit (PPDU) including a first signal field having a fixed length and a second signal field having a variable length. The second signal field includes an orthogonal frequency-division multiplexing (OFDM) symbol block including at least one OFDM symbol, and one or more repetitions of the OFDM symbol block.

公开(公告)号：US20250167969A1

公开(公告)日：2025-05-22

申请号：US18955205

申请日：2024-11-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Myeongjin KIM ,  Jinmin Kim ,  Eunsung Jeon ,  Chulho Chung

IPC: H04L5/00 ,  H04W84/12

Abstract: A wireless communication method of an apparatus includes determining a multi-layer transmission mode of transmitting data to a single user, based on modulation and coding schemes (MCSs) of each of a plurality of subchannels configuring a bandwidth channel, generating a first field indicating that the wireless communication method is based on the multi-layer transmission mode, generating a second field indicating a distribution of the plurality of subchannels and the MCSs, generating a physical protocol data unit (PPDU) including the first field and the second field, and transmitting the PPDU to an external device.

公开(公告)号：US12250589B2

公开(公告)日：2025-03-11

申请号：US17827262

申请日：2022-05-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Eunsung Jeon ,  Myeongjin Kim ,  Chulho Chung ,  Jonghun Han

IPC: H04W28/06 ,  H04W84/12

Abstract: A method includes generating a first aggregated physical layer protocol data unit (PPDU) including a first null data packet (NDP) based on an extremely high throughput (EHT) protocol standard and a second NDP based on an EHT+ protocol standard, which is a next generation of the EHT protocol standard, and transmitting the first aggregated PPDU to a second apparatus in a wireless local area network (WLAN) system. Each of the first NDP and the second NDP has a same duration, and the first NDP is transmitted in a first band and the second NDP is transmitted in a second band that is different from the first band.