公开(公告)号：US20190068281A1

公开(公告)日：2019-02-28

申请号：US16171997

申请日：2018-10-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tong Jiang

IPC: H04B10/116 ,  H04W74/08

CPC classification number: H04B10/116 ,  H04B10/11 ,  H04B10/40 ,  H04W72/1289 ,  H04W74/04 ,  H04W74/085

Abstract: Embodiments of the present application provide an information transmission method, a coordinator, and a terminal node in an optical wireless communications network. The method includes: receiving a request to send (RTS) frame sent by a sending node by using a first bandwidth, wherein the RTS frame comprises first indication information; determining a second bandwidth based on the first indication information, wherein the second bandwidth is a sending bandwidth used when the sending node sends to-be-sent information and a receiving bandwidth used when the receiving node receives the to-be-sent information; and sending a clear to send (CTS) frame to the sending node by using a third bandwidth.

公开(公告)号：US20230168381A1

公开(公告)日：2023-06-01

申请号：US18148622

申请日：2022-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Menglin Li ,  Qiang Li ,  Tong Jiang

IPC: G01S17/894 ,  G01S7/481 ,  G01S7/48

CPC classification number: G01S17/894 ,  G01S7/4802 ,  G01S7/4817

Abstract: A radar detection method includes intercepting a plurality of measurement units (MUs) from a beat frequency signal of a radar based on a time domain sliding step, where a time domain length of each of the plurality of MUs is greater than a time domain length of a preset sliding step; determining frequency information of each MU; and obtaining a radar point cloud detection result based on the frequency information of each MU, where the detection result includes at least one of a speed of a target object or a distance of the target object.

公开(公告)号：US20220026544A1

公开(公告)日：2022-01-27

申请号：US17496999

申请日：2021-10-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hongying Wu ,  Tong Jiang ,  Qiang Li ,  Honglei Li

IPC: G01S7/4865 ,  G01S17/08 ,  G01S7/48

Abstract: A ranging method includes obtaining a first echo signal that is obtained after laser light emitted by a laser to a measured object is reflected by the measured object, determining that the first echo signal is a saturated echo signal, calculating an initial distance using a receiving moment of the first echo signal, determining a target distance compensation value corresponding to a saturation degree of the first echo signal, compensating, using the target distance compensation value and in a distance compensation manner, the initial distance, and setting a distance obtained after compensation as a measured distance between the measured object and the laser.

公开(公告)号：US11025342B2

公开(公告)日：2021-06-01

申请号：US16922412

申请日：2020-07-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Pengfei Luo ,  Tong Jiang

IPC: H04B10/116 ,  H04B10/50 ,  H04B10/60

Abstract: A method includes receiving X pilot symbols, determining light source sequence numbers of the X light sources based on the X pilot symbols, receiving M×X undersampled pulse width modulation-based pulse position modulation (UPPM) symbols and parsing the M×X UPPM symbols thereby obtaining original data from a sending node by using N light sources. Each of the X pilot symbols includes W waveform segments. Each of the W waveform segments includes a first light source sequence number indication part that indicates a light source sequence number. Waveforms of waveform segments with odd sequence numbers in the W waveform segments are the same, waveforms of waveform segments with even sequence numbers in the W waveform segments are the same, and a duration of each of the W waveform segments is equal. The X pilot symbols are in a one-to-one correspondence with X light sources.

公开(公告)号：US10547383B2

公开(公告)日：2020-01-28

申请号：US16171997

申请日：2018-10-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tong Jiang

IPC: H04B10/11 ,  H04B10/116 ,  H04B10/40 ,  H04W72/12 ,  H04W74/08 ,  H04W74/04

Abstract: Embodiments of the present application provide an information transmission method, a coordinator, and a terminal node in an optical wireless communications network. The method includes: receiving a request to send (RTS) frame sent by a sending node by using a first bandwidth, wherein the RTS frame comprises first indication information; determining a second bandwidth based on the first indication information, wherein the second bandwidth is a sending bandwidth used when the sending node sends to-be-sent information and a receiving bandwidth used when the receiving node receives the to-be-sent information; and sending a clear to send (CTS) frame to the sending node by using a third bandwidth.

公开(公告)号：US20170366411A1

公开(公告)日：2017-12-21

申请号：US15694149

申请日：2017-09-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tong Jiang

IPC: H04L12/24 ,  H04L29/12 ,  H04L12/28 ,  H04L29/08 ,  H04L29/06

CPC classification number: H04L41/12 ,  H04L12/185 ,  H04L12/2803 ,  H04L12/2809 ,  H04L61/20 ,  H04L61/6022 ,  H04L63/083 ,  H04L69/324 ,  H04L2012/2841 ,  H04L2012/2843 ,  H04L2012/2845

Abstract: Embodiments provide a method, an apparatus, and a system for joining a node to a network. The method includes: receiving an access indication that is sent by a joined node and that carries information about at least one joining node; broadcasting, according to the access indication, a MAP frame carrying the information about the at least one joining node, so that a joining node corresponding to the joining node information directly completes registration after receiving the MAP frame; and sending, by a DM, an authentication password to the joining node, so that the joining node completes authentication according to the authentication password and joins the network.

公开(公告)号：US20230140139A1

公开(公告)日：2023-05-04

申请号：US18148625

申请日：2022-12-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Li ,  Menglin Li ,  Tong Jiang

IPC: G01S13/58 ,  G01S13/89

Abstract: A radar detection method includes transforming a beat frequency signal of a radar into a two-dimensional spectrogram; intercepting, based on a time domain sliding step, a plurality of measurement units (MUs) whose time domain lengths are equal to a frequency modulation period of the radar from the two-dimensional spectrogram, where a length of the time domain sliding step is less than the frequency modulation period of the radar; and determining a radar detection result based on each of the plurality of MUs.

公开(公告)号：US20220082659A1

公开(公告)日：2022-03-17

申请号：US17456223

申请日：2021-11-23

Applicant: Huawei Technologies Co., Ltd

Inventor： Honglei Li ,  Tong Jiang ,  Qiang Li ,  Hongying Wu

IPC: G01S7/41 ,  G01S13/58

Abstract: A method includes: determining, a first pixel in a receiving field of view of a radar and N sampling point sets in an echo signal corresponding to the first pixel; estimating an estimated distance between the radar and a target object based on each first sampling point set of the N sampling point sets, and determining, based on each estimated distance, M cumulative receiving fields of view in a one-to-one correspondence with M data frames; determining a second sampling point set in echo signals corresponding to Q neighboring pixels, and superposing each first sampling point set and the corresponding second sampling point set to obtain an echo signal that corresponds to the first pixel and that is obtained; and calculating an actual distance between the radar and the target object based on the echo signal obtained after superposition processing.

公开(公告)号：US20220018943A1

公开(公告)日：2022-01-20

申请号：US17489069

申请日：2021-09-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Honglei Li ,  Qiang Li ,  Tong Jiang ,  Hongying Wu

IPC: G01S7/4863 ,  G01S17/10

Abstract: A ranging method includes determining a pixel matrix based on a received echo signal, determining a first amplitude value set based on a first pixel, determining a second pixel based on the first pixel, determining, based on the second pixel, a second amplitude value set based on the second pixel, performing a summation on a target first amplitude value set and a target second amplitude value set, obtaining a target ranging set based on all first amplitude value sets and all second amplitude value sets, and performing a ranging based on the target ranging set to improve a signal-to-noise ratio of an accumulated amplitude value set and a ranging accuracy.

公开(公告)号：US10554795B2

公开(公告)日：2020-02-04

申请号：US16119467

申请日：2018-08-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chen Dong ,  Tong Jiang ,  Qiang Li

IPC: H04B10/116 ,  H04L29/08 ,  H04L29/06

Abstract: The present application discloses an uplink transmission method, including: generating, by a media access control (MAC) layer of a first device, MAC information, then generating a first primitive carrying the MAC information, and sending the first primitive to an adjacent higher layer of the MAC layer of the first device; receiving, by the adjacent higher layer of the MAC layer of the first device, the first primitive, then generating an adjacent higher layer message carrying the MAC information, and sending the adjacent higher layer message to an adjacent higher layer of a MAC layer of a second device; and receiving, by the adjacent higher layer of the MAC layer of the second device, the adjacent higher layer message, then generating a second primitive carrying the MAC information, and sending the second primitive to the MAC layer of the second device.