公开(公告)号：US12199685B2

公开(公告)日：2025-01-14

申请号：US17657645

申请日：2022-04-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexander Kobzantsev ,  Doron Ezri ,  Avi Weitzman ,  Chun Pan ,  Xingfeng Jiang ,  Jie Fu

IPC: H04B17/12 ,  H04B7/0413 ,  H04B7/06 ,  H04B17/21

Abstract: A Multiple-Input Multiple-Output (MIMO) device comprises an array of multiple antennas and a circuitry configured to receive, using the array of multiple antennas, a plurality of calibration signals from a plurality of proximate wireless MIMO devices, calibrate the wireless MIMO device based on the received calibration signals and based on known directions from the wireless MIMO device to each of the proximate wireless MIMO devices, and drive the array of multiple antennas to emit a beam-formed calibration signal to each of the proximate wireless devices in order to enable each of the proximate wireless MIMO devices to calibrate itself.

公开(公告)号：US11949542B2

公开(公告)日：2024-04-02

申请号：US18345807

申请日：2023-06-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shimon Shilo ,  Oded Redlich ,  Ezer Melzer ,  Doron Ezri ,  Yoav Levinbook ,  Genadiy Tsodik ,  Jian Yu ,  Mengshi Hu

IPC: H04L27/26 ,  H04L5/00 ,  H04W74/0816

CPC classification number: H04L27/2614 ,  H04L5/0053 ,  H04W74/0816

Abstract: This application relates to the field of communications technologies, in particularly related to wireless fidelity (WIFI) technologies, and provides a method and apparatus for reducing peak to average power ratio (PAPR) for transmitting a physical layer protocol data units (PPDUs). The method can be used for both an access point (AP) and a station (STA). The method comprises: operating on a first disregard bits sequence to obtain a second disregard bits sequence, wherein the first disregard bits sequence is with all bits set to ‘1’, and transmitting the PPDU, wherein the PPDU comprises the second disregard bits sequence.

公开(公告)号：US20240064811A1

公开(公告)日：2024-02-22

申请号：US18494540

申请日：2023-10-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Arik Klein ,  Shimon Shilo ,  Genadiy Tsodik ,  Oded Redlich ,  Avner Epstein ,  Doron Ezri

IPC: H04W74/08 ,  H04B7/04

CPC classification number: H04W74/0816 ,  H04B7/04026

Abstract: A wireless access point, AP, (110a) is disclosed, which is configured to share a transmission opportunity with at least one further wireless access point (110b) within a Multi-AP set using a Coordinated Beamforming, C-BF, scheme. The wireless AP (110a) comprises a processing circuitry (111) configured to generate a C-BF Null Data PPDU Announcement, C-BF NDPA, frame, wherein the C-BF NDPA frame comprises a Multi-AP set identifier. Moreover, the wireless AP (110a) comprises a communication interface (113) configured to transmit the C-BF NDPA frame to one or more wireless stations (120a) associated with the wireless AP (110a) and/or to one or more further wireless stations (120b) associated with the at least one further wireless AP (110b) within the Multi-AP set.

公开(公告)号：US11784852B2

公开(公告)日：2023-10-10

申请号：US17703705

申请日：2022-03-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yoav Levinbook ,  Doron Ezri ,  Nadav Basson ,  Jie Fu

IPC: H04L25/02 ,  H04L5/00

CPC classification number: H04L25/0224 ,  H04L5/0046 ,  H04L5/0048

Abstract: A device is configured to calculate a set of channel estimates for a plurality of sub-carriers based on a plurality of pilot-symbols and/or data-symbols carried by said plurality of sub-carriers; calculate a set of equalizers for the plurality of sub-carriers based on the set of channel estimates; perform an equalization on a plurality of data-symbols using the set of equalizers for obtaining a plurality of equalized symbols; perform a soft-slicing or hard-slicing procedure comprising obtaining a plurality of estimated symbols based on the equalized symbols; calculate at least one diagonal-loaded interference-plus-noise covariance matrix, based on the set of estimated symbols; de-map the plurality of data symbols to soft-bits, based on the at least one diagonal-loaded interference-plus-noise covariance matrix, the set of channel estimates or an updated version thereof; and feed the soft-bits to a channel decoder.

公开(公告)号：US20230319851A1

公开(公告)日：2023-10-05

申请号：US18192435

申请日：2023-03-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shimon Shilo ,  Genadiy Tsodik ,  Avner Epstein ,  Arik Klein ,  Yaron Ben-Arie ,  Doron Ezri

IPC: H04W72/27 ,  H04L1/1607 ,  H04L5/00 ,  H04B7/06

CPC classification number: H04W72/27 ,  H04L1/1621 ,  H04L5/0053 ,  H04L5/0044 ,  H04B7/0617 ,  H04W88/08

Abstract: A system and method for triggering beamformed uplink (UL) physical layer protocol data units (PPDUs) are disclosed. The system comprises an access point (AP) and one or more stations (STAs). The AP sends a soliciting frame to the one or more STAs, wherein the frame comprises a null data packet, NDP, request, NDPR, indicator and receive an NDP PPDU from each of the one or more solicited STAs. The AP, then computes the precoder for each of the one or more solicited STAs and send the one or more solicited STA a trigger frame with a beamforming report. The AP receives from each of the STAs one or more beamformed UL data packets and sends a block acknowledgement to the one or more solicited STAs indicating the successful receipt of the one or more beamformed UL data packets.

公开(公告)号：US20230299816A1

公开(公告)日：2023-09-21

申请号：US18322864

申请日：2023-05-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shahar Patury ,  Avi Weitzman ,  Doron Ezri ,  Avner Epstein ,  Arik Klein

IPC: H04B7/0452 ,  H04B7/06

CPC classification number: H04B7/0452 ,  H04B7/0617 ,  H04W84/12

Abstract: A wireless initiator access point comprising a communication interface with an array of antennas and configured to operate the array of antennas with a precoding configuration for multi-user multiple-input multiple-output (MU-MIMO) communication with a plurality of wireless stations; send a Null Data Packet (NDP) Announcement frame to the wireless stations; trigger a wireless participator access point to send an NDP frame to the wireless stations; receive a plurality of Compressed Beamforming frames from the wireless stations; and forward the Compressed Beamforming frames to the wireless participator access point.

公开(公告)号：US11363632B2

公开(公告)日：2022-06-14

申请号：US16887820

申请日：2020-05-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Leonid Epstein ,  Shimon Shilo ,  Avi Weitzman ,  Genadiy Tsodik ,  Doron Ezri ,  Jian Yu

IPC: H04W74/08 ,  H04W72/04 ,  H04W72/12 ,  H04W80/02 ,  H04W84/12

Abstract: A device on a wireless network generates duration data for determining a duration of a time interval. A transmission is then instructed, by the device, to transmit the duration data and a downlink payload including an aggregated Media Access Control (MAC) layer data unit, the downlink payload being transmitted on first subcarriers. The transmission also includes a trigger that configures the at least one other device on the network to transmit an uplink payload within the time interval, and during at least part of the transmission of the downlink payload, on second subcarriers that are at different frequencies to the first subcarriers.

公开(公告)号：US11108609B2

公开(公告)日：2021-08-31

申请号：US16806607

申请日：2020-03-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yoav Levinbook ,  Doron Ezri ,  Ezer Melzer

IPC: H04L27/26 ,  H04B1/02 ,  H04B1/06 ,  H04J1/02 ,  H04L5/00 ,  H04L25/03

Abstract: A transmitter includes a processor configured to convert a primary sequence of modulation symbols into a primary signal using a universal pulse shape. The processor is further configured to convert an auxiliary sequence of modulation symbols, created from the primary sequence, to an auxiliary signal using an altered version of the universal pulse shape. In addition, the processor is configured to combine the primary signal and the auxiliary signal to create a joint output signal.

公开(公告)号：US10680870B2

公开(公告)日：2020-06-09

申请号：US16408067

申请日：2019-05-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yoav Levinbook ,  Doron Ezri ,  Ezer Melzer ,  Zongjie Wang

IPC: H04L27/26 ,  G06F17/14 ,  H04B7/0413 ,  H04L5/00 ,  H04L27/20 ,  H04L25/03

Abstract: A transmitter, comprising a processor adapted to convert a primary sequence of modulation symbols into a primary signal, using a primary pulse shape, convert an auxiliary sequence of modulation symbols, created from the primary sequence, to an auxiliary signal using an auxiliary pulse shape and create a joint output signal based on the primary signal and on the auxiliary signal.

公开(公告)号：US10587318B2

公开(公告)日：2020-03-10

申请号：US16014232

申请日：2018-06-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Doron Ezri ,  Genadiy Tsodik ,  Shimon Shilo ,  Oded Redlich ,  Yaron Ben-Arie

IPC: H04B7/0456 ,  H04B7/0417

Abstract: An apparatus for deriving a submatrix {tilde over (G)}−1 is described. The apparatus for deriving a submatrix {tilde over (G)}−1 is configured to select an N-elements-column and an N-elements-row of an N×N-Matrix G or G−1. The apparatus for deriving a submatrix {tilde over (G)}−1 is configured to rearrange the selected column to the rightest column and the selected row to the lowest row of G or G−1 so as to generate a N×N-matrix Gp or Gp−1. The apparatus for deriving a submatrix {tilde over (G)}−1 is configured to calculate a submatrix {tilde over (G)}−1 by G ~ - 1 = A - AbcA d - 1 + c T ⁢ Ab , wherein the parameters (N−1)×(N−1)-submatrix A, b, d, c are obtained from the Gp or the Gp−1; wherein G p = [ G ~ b c T d ] , ⁢ G p - 1 = [ A b ~ c ~ T d ~ ] .