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公开(公告)号：US10555340B2
公开(公告)日：2020-02-04
申请号：US15829252
申请日：2017-12-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yun Liu , Sheng Liu , Teyan Chen
Abstract: A method for transmission and reception in parallel on dual channels includes, when detecting that a first channel is occupied by CSMA contention, determining, by an AP, first transmission duration of a first channel data packet. The method additionally includes determining, by means of CCA detection, that a second channel is idle, where the second channel is used to transmit a second channel data packet whose transmission direction is opposite to a transmission direction of the first channel. The method additionally includes determining, by using the first transmission duration, second transmission duration for transmitting the second channel data packet, and transmitting the second channel data packet according to the second transmission duration, where an end time of transmission of the second channel data is not later than an end time of transmission of the first channel data.
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公开(公告)号：US10397956B2
公开(公告)日：2019-08-27
申请号：US15829252
申请日：2017-12-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yun Liu , Sheng Liu , Teyan Chen
Abstract: A method for transmission and reception in parallel on dual channels includes, when detecting that a first channel is occupied by CSMA contention, determining, by an AP, first transmission duration of a first channel data packet. The method additionally includes determining, by means of CCA detection, that a second channel is idle, where the second channel is used to transmit a second channel data packet whose transmission direction is opposite to a transmission direction of the first channel. The method additionally includes determining, by using the first transmission duration, second transmission duration for transmitting the second channel data packet, and transmitting the second channel data packet according to the second transmission duration, where an end time of transmission of the second channel data is not later than an end time of transmission of the first channel data.
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公开(公告)号：US10375658B2
公开(公告)日：2019-08-06
申请号：US15594192
申请日：2017-05-12
Applicant: Huawei Technologies Co., Ltd.
Abstract: Embodiments disclose an automatic gain control method and a communications device in a wireless local area network. The method includes generating a physical layer packet, where the physical layer packet includes a high efficiency long training field, the high efficiency long training field includes N symbols, a length of a cyclic prefix (CP— of a first symbol in the N symbols is greater than or equal to a minimum length required by a receiver device to perform automatic gain control (AGC) estimation, and N is a positive integer. The method also includes sending the physical layer packet to the receiver device.
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公开(公告)号：US10326628B2
公开(公告)日：2019-06-18
申请号：US15493675
申请日：2017-04-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sheng Liu , Weishan Lu , Teyan Chen
IPC: H04W4/00 , H04L27/26 , H04B7/0452 , H04W72/04
Abstract: Embodiments of the present application provide a signal processing method and apparatus, and a device. The embodiments relate to an MU-MIMO system. The signal processing apparatus includes: a signal obtaining module and a sending module. A signal includes N spatial flows, and the signal includes a training field, where the training field includes a first part and a second part. Sub-carriers of an OFDM symbol in the second part of the training field are divided into N training sub-carrier sets TSSs in a division manner that is the same as a division manner of sub-carriers of an OFDM symbol in the first part of the training field, and each spatial flow corresponds to at least one sub-carrier in a TSS, in each frequency domain location, of each OFDM symbol in the second part of the training field. So that precision of the channel estimation is improved.
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公开(公告)号：US20190182018A1
公开(公告)日：2019-06-13
申请号：US16277509
申请日：2019-02-15
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sheng Liu
Abstract: A method includes: obtaining, by an access point AP, use permission of a channel; determining, by the AP after obtaining the use permission of the channel, scheduling information for a station STA participating in full-duplex transmission, where the scheduling information includes information about a first station that performs uplink transmission on the channel and information about a second station that performs downlink transmission on the channel at the same time, or the scheduling information includes information about a third station that simultaneously performs uplink and downlink transmission on the channel; and sending, by the AP, a trigger frame, where the trigger frame includes the scheduling information.
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Patent Agency Ranking
公开(公告)号：US10050812B2
公开(公告)日：2018-08-14
申请号：US15369526
申请日：2016-12-05
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Sheng Liu
CPC classification number: H04L25/03006 , H04B1/10 , H04B1/12 , H04B1/525 , H04B1/56 , H04L5/0048 , H04L5/1461 , H04L25/0212 , H04L25/0224 , H04W4/80
Abstract: Methods and apparatuses are provided to cancel a near-field reflected self-interference component. The method includes: obtaining a radio frequency receive signal by using a main receive antenna; performing interference cancellation processing on the radio frequency receive signal according to the radio frequency reference signal to generate a first processed signal; performing near-field reflected self-interference channel estimation according to a digital baseband reference signal corresponding to the radio frequency reference signal and according to a first digital signal obtained by sampling the first processed signal to obtain a near-field reflected self-interference component parameter; performing near-field reflected self-interference signal reconstruction according to the near-field reflected self-interference component parameter and the radio frequency reference signal to obtain a near-field reflected self-interference signal; and performing interference cancellation processing on the first processed signal according to the near-field reflected self-interference signal to obtain a second processed signal.
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公开(公告)号：US10050810B2
公开(公告)日：2018-08-14
申请号：US15130652
申请日：2016-04-15
Applicant: Huawei Technologies Co., Ltd.
Inventor： Teyan Chen , Hong Cheng , Sheng Liu
Abstract: A channel estimation method includes: obtaining a self-interference channel estimation value of an ith moment and a communication channel estimation value of the ith moment, the i being greater than or equal to 0; obtaining a local end transmitting signal of the ith moment; obtaining an opposite end transmitting signal estimation value of the ith moment; and according to the self-interference channel estimation value of the ith moment, the communication channel estimation value of the ith moment, the local end transmitting signal of the ith moment and the opposite end transmitting signal estimation value of the ith moment, obtaining the self-interference channel estimation value and communication channel estimation value of an i+1 moment, and the i+1 moment differing from the i moment by 1 unit of time.
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公开(公告)号：US10044531B2
公开(公告)日：2018-08-07
申请号：US15332483
申请日：2016-10-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Hong Cheng , Teyan Chen , Sheng Liu
Abstract: The embodiments of present disclosure provide a method for estimating a response of a baseband self-interference channel and an apparatus, where the method includes: estimating a response of a baseband self-interference channel to obtain a first estimation response of the baseband self-interference channel; starting to perform first full duplex communication; canceling baseband self-interference in a first baseband received signal according to the first estimation response, where the first baseband received signal is a baseband signal received during the first full duplex communication; determining a first parameter of the baseband self-interference channel; determining an estimation policy of the baseband self-interference channel according to the first parameter; and estimating the response of the baseband self-interference channel according to the estimation policy.
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公开(公告)号：US10033428B2
公开(公告)日：2018-07-24
申请号：US15167609
申请日：2016-05-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sheng Liu
Abstract: Embodiments of the present invention provide a method for reducing a self-interference signal in a communications system, and an apparatus. The method includes: sending a sounding signal and a first communication signal; receiving an input signal; separating a near-field reflection signal corresponding to the sounding signal from an echo signal of the input signal; determining, based on the near-field reflection signal, a near-field reflection channel parameter; determining, based on the near-field reflection channel parameter, a reconstructed near-field reflected self-interference signal; and subtracting the reconstructed near-field reflected self-interference signal from a received second communication signal. The present invention can effectively recognize and reconstruct a near-field reflection signal, thereby reducing a near-field reflected self-interference signal in self-interference.
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公开(公告)号：US20170063518A1
公开(公告)日：2017-03-02
申请号：US15347633
申请日：2016-11-09
Applicant: Huawei Technologies Co., Ltd.
Inventor： Teyan Chen , Sheng Liu , Hong Cheng
CPC classification number: H04L5/1461 , H04L27/38
Abstract: The present embodiments relate to the field of communications, and discloses a signal processing method and apparatus, which can implement self-interference cancellation when in-phase quadrature (IQ) imbalance exists in a communications system. An embodiment is acquiring, a digital baseband reference signal, a self-interference reference signal, and a frequency-domain baseband signal. The method also includes obtaining, according to the digital baseband reference signal, a basic reference signal and an image reference signal that are image to each other and estimating an estimated value of a first comprehensive response and an estimated value of a second comprehensive response according to the basic reference signal, the image reference signal, and the self-interference reference signal. Additionally, the method includes calculating a self-interference signal according to the estimated value of the first comprehensive response, the estimated value of the second comprehensive response, the basic reference signal, and the image reference signal, so as to perform self-interference cancellation on the frequency-domain baseband signal.
Abstract translation: 本实施例涉及通信领域，并且公开了一种信号处理方法和装置，其可以在通信系统中存在同相正交（IQ）不平衡时实现自干扰消除。 一个实施例是获取数字基带参考信号，自干扰参考信号和频域基带信号。 该方法还包括：根据数字基带参考信号，根据数字基带参考信号获得作为图像的基本参考信号和图像参考信号，并且根据以下方式估计第一综合响应的估计值和第二综合响应的估计值 基本参考信号，图像参考信号和自干扰参考信号。 此外，该方法包括根据第一综合响应的估计值，第二综合响应的估计值，基准参考信号和图像参考信号来计算自干扰信号，以执行自干扰消除 在频域基带信号上。
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