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1.发明申请公开(公告)号：US20220171021A1
公开(公告)日：2022-06-02
申请号：US17675258
申请日：2022-02-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jinnan Liu , Mu Zhou , Dapeng Lao
Abstract: A signal transmission method and apparatus, a signal processing method and apparatus, and a radar system are provided. The signal transmission method is applied to a multiple input multiple output MIMO radar, the MIMO radar includes a transmitter, and the transmitter includes a plurality of transmit antennas. The signal transmission method includes: sending, by the transmitter, a first burst in a first measurement frame, where the first measurement frame is used to measure a velocity of a target, and when the first burst is sent, each of the plurality of transmit antennas sends a chirp signal in a time division manner; and sending, by the transmitter, a second burst in the first measurement frame after the transmitter sends the first burst in the first measurement frame, where when the second burst is sent, a quantity of transmit antennas configured to send a chirp signal is one.
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公开(公告)号：US11962384B2
公开(公告)日：2024-04-16
申请号：US17563703
申请日：2021-12-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Mu Zhou
CPC classification number: H04B7/0663 , H04B7/0634 , H04B17/21
Abstract: An apparatus includes a first splitter configured to feed a first signal onto a first transmission channel and a second transmission channel, where the first splitter is located in a symmetrical position between the first transmission channel and the second transmission channel, and a vector detection component configured to, when the first splitter feeds the first signal, detect a first signal vector based on a first feedback signal from the first transmission channel, and detect a second signal vector based on a second feedback signal from the second transmission channel.
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公开(公告)号：US20220146623A1
公开(公告)日：2022-05-12
申请号：US17581176
申请日：2022-01-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Dapeng Lao , Jinnan Liu , Ben Wang , Mu Zhou
IPC: G01S7/03 , G01S13/06 , G01S13/931
Abstract: A radar system (400) and a vehicle are provided, so that when high angular resolution is obtained, a quantity of transmit antennas and a quantity of receive antennas are reduced, to reduce design and processing difficulty. The radar system (400) includes: a transmitter (401), configured to transmit a radar signal; and a receiver (402), configured to receive an echo signal obtained after the radar signal is reflected by a target, where a transmit antenna array of the transmitter (401) and a receive antenna array of the receiver (402) are used to form a virtual linear array and a virtual planar array, the virtual linear array includes a uniform linear array in a first direction, the virtual planar array includes a uniform planar array, and a first spacing between two adjacent array elements in the uniform linear array is less than a second spacing between two adjacent array elements in the first direction in the uniform planar array.
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公开(公告)号：US20210266217A1
公开(公告)日：2021-08-26
申请号：US17193641
申请日：2021-03-05
Applicant: Huawei Technologies Co., Ltd.
Inventor： Mu Zhou , Ricky Lap Kei Cheung , Yi Cao
Abstract: An apparatus for correcting a deviation between a plurality of transmission channels includes a first transmission channel and a second transmission channel. The apparatus also includes a phase offset unit configured to set a phase offset between the first transmission channel and the second transmission channel such that a phase deviation between the first transmission channel and the second transmission channel deviates from zero, a power detection unit configured to detect signal powers of the first transmission channel and the second transmission channel under the phase offset, a processing unit configured to determine, based on the detected signal powers, a deviation correction value between the first transmission channel and the second transmission channel, where the deviation correction value includes a phase correction value, and a phase correction unit configured to set the phase correction value between the first transmission channel and the second transmission channel.
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5.发明申请公开(公告)号：US20200328929A1
公开(公告)日：2020-10-15
申请号：US16913125
申请日：2020-06-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Mu Zhou , Ricky Lap Kei Cheung , Yi Cao
Abstract: An apparatus includes a phase offset unit configured to set a phase offset between the first transmission channel and the second transmission channel such that a phase deviation between the first transmission channel and the second transmission channel deviates from zero, a power detection unit configured to detect signal powers of the first transmission channel and the second transmission channel under the phase offset, a processing unit configured to determine, based on the detected signal powers, a deviation correction value between the first transmission channel and the second transmission channel, where the deviation correction value includes a phase correction value, and a phase correction unit configured to set the phase correction value between the first transmission channel and the second transmission channel.
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Patent Agency Ranking
公开(公告)号：US11843177B2
公开(公告)日：2023-12-12
申请号：US17004604
申请日：2020-08-27
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: H01Q21/08 , H04B7/0695 , H04B7/088
Abstract: An antenna apparatus, which includes an antenna array and a processor, where the processor is configured to determine a first antenna subarray from N rows and M columns of radiating elements of the antenna array, where the first antenna subarray includes X1 rows and Y1 columns of radiating elements, and X1 is greater than Y1, control a phase shift increment change of the first antenna subarray to generate a plurality of first beams, determine a first aligned beam from the first beams based on a first feedback from a receive end, determine a second antenna subarray, where the second antenna subarray includes X2 rows and Y2 columns of radiating elements, and Y2 is greater than X2, and determine a second aligned beam from the second beams based on a second feedback from the receive end.
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公开(公告)号：US20230344471A1
公开(公告)日：2023-10-26
申请号：US18344297
申请日：2023-06-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Mu Zhou , Chenghao Wang , Minqiu Chen
IPC: H04B7/0413
CPC classification number: H04B7/0413
Abstract: Embodiments of this application provide a communication device. The communication device includes a first splitter, a first transmit path, and a second transmit path, where the first transmit path includes a first phase shifter and a first power amplifier, and the second transmit path includes a second phase shifter and a second power amplifier; an output end of the first transmit path is coupled to a first transmit antenna, and an output end of the second transmit path is coupled to a second transmit antenna; an input end of the first transmit path and an input end of the second transmit path are separately coupled to the splitter; the first transmit path and the second transmit path are configured to transmit a beamforming signal; and the first transmit path and the second transmit path are further configured to transmit a multiple-input-multiple-output MIMO signal.
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公开(公告)号：US11784727B2
公开(公告)日：2023-10-10
申请号：US17558949
申请日：2021-12-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Mu Zhou
CPC classification number: H04B17/14 , H04B7/0619 , H04W24/10 , H04L5/0051
Abstract: A method includes a first port including a first measured channel, a second port including a second measured channel, a third port including a first reference channel, and a fourth port including a second reference channel, and a vector detector configured to perform detection based on a first and second feedback signal that are respectively output by the first and second reference channel to thereby obtain a first and second signal vector in response to the first port transmitting a first signal, and perform detection based on a third and fourth feedback signal that are respectively output by the first and second reference channel, to obtain a third and fourth signal vector in response to the second port transmitting the first signal. The first, second, third, and fourth signal vector are useable to calibrate a deviation between the first and the second measured channel.
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公开(公告)号：US11456807B2
公开(公告)日：2022-09-27
申请号：US17159411
申请日：2021-01-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: This application provides an apparatus for correcting a deviation between a plurality of transmission channels, which includes a first transmission channel and a second transmission channel. The first transmission channel and the second transmission channel are respectively connected to a first endpoint and a second endpoint of a correction coupling channel. The apparatus includes a vector detection unit, configured to: when a first signal is fed at the first endpoint and a second signal is fed at the second endpoint, respectively detect a plurality of signal vectors based on a plurality of feedback signals of the first transmission channel and the second transmission channel; and a processing unit, configured to determine a deviation correction value between the first transmission channel and the second transmission channel based on the detected signal vectors.
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公开(公告)号：US12111387B2
公开(公告)日：2024-10-08
申请号：US17345039
申请日：2021-06-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Mu Zhou , Jinnan Liu , Chen Yang
IPC: G01S13/58 , G01S7/35 , G01S13/00 , G01S13/931
CPC classification number: G01S13/584 , G01S13/003 , G01S13/931 , G01S7/356
Abstract: Embodiments of this application disclose a signal processing method, a radar system, and a vehicle. The method is applied to a radar system including an array antenna. The method includes: sequentially transmitting signals according to a first transmission sequence through M transmit antennas, where the first transmission sequence is different from a sequence that is formed by arranging the M transmit antennas based on spatial locations; receiving, through N receive antennas, echo signals that are formed after a target reflects the transmitted signals, where M and N are positive integers, and M is greater than 2; and measuring a parameter of the target based on the echo signals. According to the embodiments of this application, correlation between space and a Doppler phase shift is reduced by changing a switching order of transmit antennas.
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