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公开(公告)号：US11018830B2
公开(公告)日：2021-05-25
申请号：US16505298
申请日：2019-07-08
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanzhou Hu , Mengying Ding , Pengpeng Dong , Zongjie Wang
Abstract: This application proposes a reference signal transmission method and a device. The method includes: converting, by a sending device, a frequency domain reference signal from frequency domain to time domain, to generate a time domain reference signal, where the frequency domain reference signal includes a reference signal sequence mapped to a frequency domain resource group, the reference signal sequence is related to a Zadoff-Chu sequence and a length of the reference signal sequence, and a length value of the Zadoff-Chu sequence is greater than a quantity of minimum time-frequency resource units included in a maximum frequency domain resource that can be allocated; and sending, by the sending device, the time domain reference signal. According to the reference signal transmission method in this application, a performance requirement on a PAPR/RCM of a reference signal can be met, a quantity of blind reference signal detection times can be reduced, and system performance can be improved.
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公开(公告)号：US11546193B2
公开(公告)日：2023-01-03
申请号：US17491441
申请日：2021-09-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanzhou Hu , Fan Wang
Abstract: Embodiments of this application provide a data compression method, including: performing first processing on π/2-binary phase shift keying BPSK modulated data with a length of M, to obtain first frequency domain data with a length of M, where the first processing includes Fourier transform, and M is an even number; performing second processing on second frequency domain data with a length of Q, to obtain time domain data, where data in the second frequency domain data is included in the first frequency domain data, Q is a positive integer, M is greater than Q, Q is greater than or equal to M/2, and the second processing includes inverse Fourier transform; and sending the time domain data on one time domain symbol.
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公开(公告)号：US11245562B2
公开(公告)日：2022-02-08
申请号：US16368618
申请日：2019-03-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xin Zeng , Zongjie Wang , Yuanzhou Hu
Abstract: This application relates to the field of wireless communications technologies, and in particular, to a data processing method, apparatus, and system. This application provides a data processing method. A data sending device modulates a to-be-transmitted bit sequence, splits a real part and an imaginary part of a complex-valued symbol that is obtained through the modulation into two symbols to form a symbol sequence, performs phase rotation of symbols in the symbol sequence, and performs sending by using a single carrier frequency division multiple access (SC-FDMA) symbol. This application is intended to reduce a peak-to-average power ratio (PAPR) of a transmit signal of an orthogonal frequency division multiplexing (OFDM) system by splitting a real part and an imaginary part of a to-be-transmitted signal, and improve link quality of an entire transmission system.
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公开(公告)号：US20210288855A1
公开(公告)日：2021-09-16
申请号：US17333852
申请日：2021-05-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yuanzhou Hu , Mengying Ding , Shuri Liao , Fan Wang
Abstract: The method may include: determining a third frequency-domain data stream, which includes a first frequency-domain data stream and a second frequency-domain data stream, a length of the third frequency-domain data stream is 2N, lengths of both the first frequency-domain data stream and the second frequency-domain data stream are N, data in the first frequency-domain data stream and data in the second frequency-domain data stream are separately mapped to different locations in the third frequency-domain data stream, the first frequency-domain data stream is obtained by performing zero adding processing and Fourier transform processing on a first source data stream, the second frequency-domain data stream is obtained by performing cyclic extension processing on a second source data stream; converting the third frequency-domain data stream into time-domain data and sending the time-domain data to a base station.
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公开(公告)号：US11095408B2
公开(公告)日：2021-08-17
申请号：US16460201
申请日：2019-07-02
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanzhou Hu , Mengying Ding , Zongjie Wang
IPC: H04L5/00
Abstract: Disclosed is a reference signal transmission method and a device. The method includes converting, by a sending device, a frequency domain reference signal from frequency domain to time domain, to generate a time domain reference signal. The frequency domain reference signal includes a reference signal sequence mapped to a frequency domain resource. The reference signal sequence is determined based on a Zadoff-Chu (ZC) sequence, and a length value of the ZC sequence is selected from at least two length values. The method includes sending, by the sending device, the time domain reference signal. According to the reference signal transmission method, one ZC sequence is selected from at least two ZC sequences with different lengths to generate the reference signal sequence, so that the generated reference signal sequence is characterized by a low PAPR and an low RCM, and is used to generate a reference signal, to improve data transmission performance.
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Patent Agency Ranking
公开(公告)号：US11025467B2
公开(公告)日：2021-06-01
申请号：US16914643
申请日：2020-06-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanzhou Hu , Mengying Ding , Shuri Liao , Fan Wang , Lei Wang
IPC: H04L27/26
Abstract: A data sending apparatus includes a processor and a transceiver. The processor is configured to generate K first frequency-domain data streams, wherein a kth first frequency-domain data stream of the K first frequency-domain data streams is determined by performing preprocessing on a kth first modulated data stream, and the preprocessing includes at least a Fourier transform, a cyclic extension, or a phase rotation. The processor is further configured to map the K first frequency-domain data streams to frequency-domain resources to generate a time-domain symbol, and the transceiver is configured to send the time-domain symbol. A length of the kth first frequency-domain data stream of the K first frequency-domain data streams is Nk, and a length of the kth first modulated data stream is Mk. K is a positive integer greater than 1, Nk and Mk are positive integers, and k is an integer k=0, 1, . . . , K−1.
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公开(公告)号：US20250106088A1
公开(公告)日：2025-03-27
申请号：US18902381
申请日：2024-09-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Qi Feng , Yuanzhou Hu , Gaoning He , Jianmin Lu
IPC: H04L27/26
Abstract: This application provides a signal generation method and an apparatus. In the method, a first communication apparatus generates a first signal, and sends the first signal to a second communication apparatus, who receives the first signal, and then demodulates the first signal. A symbol included in the first signal is carried on K+2(M−1) subcarriers. Middle K subcarriers are valid subcarriers, start M−1 subcarriers and last M−1 subcarriers are redundant subcarriers, and a subcarrier spacing between adjacent subcarriers is related to a feature of a time domain pulse used to shape the subcarrier, wherein a width of each of some or all side lobes of a spectrum of the time domain pulse is equal to 1/M of a main lobe width of the time domain pulse, the subcarrier spacing is 1/M of the main lobe width. K is a positive integer, and M is a positive integer greater than 1.
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公开(公告)号：US20240323073A1
公开(公告)日：2024-09-26
申请号：US18675101
申请日：2024-05-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Qi Feng , Yuanzhou Hu , Huang Huang , Xiaoyan Bi
CPC classification number: H04L27/3405 , H04L25/03834
Abstract: A communication method and apparatus belonging to the NR or LTE field, to improve spectral efficiency of an ultra-high frequency band. The method includes: a first apparatus generates and sends a first signal. The first signal is a signal obtained by performing deceleration modulation on a symbol, and a time interval between two symbols that undergo deceleration modulation is greater than a time interval between the two symbols that do not undergo deceleration modulation.
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公开(公告)号：US12063135B2
公开(公告)日：2024-08-13
申请号：US17333852
申请日：2021-05-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yuanzhou Hu , Mengying Ding , Shuri Liao , Fan Wang
CPC classification number: H04L27/2621 , H04L5/0007 , H04L5/0048 , H04L27/2607
Abstract: The method may include: determining a third frequency-domain data stream, which includes a first frequency-domain data stream and a second frequency-domain data stream, a length of the third frequency-domain data stream is 2N, lengths of both the first frequency-domain data stream and the second frequency-domain data stream are N, data in the first frequency-domain data stream and data in the second frequency-domain data stream are separately mapped to different locations in the third frequency-domain data stream, the first frequency-domain data stream is obtained by performing zero adding processing and Fourier transform processing on a first source data stream, the second frequency-domain data stream is obtained by performing cyclic extension processing on a second source data stream; converting the third frequency-domain data stream into time-domain data and sending the time-domain data to a base station.
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公开(公告)号：US20230379206A1
公开(公告)日：2023-11-23
申请号：US18361562
申请日：2023-07-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yuanzhou Hu , Qi Feng , Xiaoyan Bi
CPC classification number: H04L27/34 , H04L27/2636 , H04L27/2615
Abstract: This application discloses a data sending method, a data receiving method, and a related apparatus. First phase rotation is performed on modulated data to obtain time domain rotated data. Frequency domain transform is performed on the time domain rotated data to obtain frequency domain data. Second phase rotation is performed on the frequency domain data to obtain frequency domain rotated data. Time domain transform is performed on the frequency domain rotated data to obtain time domain data. The time domain data is sent. Therefore, phase rotation may be separately performed on the modulated data and the frequency domain data based on an SC-FDMA waveform, to reduce a maximum amplitude of the time domain data and reduce a PAPR of the sent time domain data.
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