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公开(公告)号：US11108605B2
公开(公告)日：2021-08-31
申请号：US16659310
申请日：2019-10-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xi Zhang , Fengwei Liu , Lei Chen , Minghui Xu
Abstract: A PTRS processing method and an apparatus. The method includes: receiving, by a terminal, first indication information and second indication information from a network device, where the first indication information is used to indicate a time-domain location at which a PTRS is to be sent by the terminal, and the second indication information is used to indicate an offset of an initial time-domain location to which the PTRS is mapped by the terminal; mapping, by the terminal, the PTRS to one or more DFT-s-OFDM symbols based on the first indication information and the second indication information; and sending, by the terminal, the one or more DFT-s-OFDM symbols. In this way, the PTRS mapped to the DFT-s-OFDM symbol is offset at a DFT-s-OFDM symbol level, so that PTRS collision between terminals can be avoided to an extent, thereby improving phase tracking precision.
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公开(公告)号：US10972320B2
公开(公告)日：2021-04-06
申请号：US16821544
申请日：2020-03-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xi Zhang , Minghui Xu
Abstract: This application provides a reference signal communication method and communication apparatus. The method includes determining a resource block offset of a frequency domain position of a phase tracking reference signal (PTRS) based on a frequency domain density of the PTRS, an identifier of a terminal device, and a first bandwidth, in accordance with a ratio of the first bandwidth to the frequency domain density of the PTRS being a non-integer. The first bandwidth is a bandwidth scheduled by a network device for the terminal device. The method further includes sending or receiving the PTRS based on the resource block offset of the frequency domain position of the PTRS.
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公开(公告)号：US10952168B2
公开(公告)日：2021-03-16
申请号：US16400382
申请日：2019-05-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Sainan Li , Huang Huang , Xi Zhang
Abstract: Embodiments provide a method for transmitting a downlink control signal, and an apparatus. The method includes: sending, by a base station, one or more radio frames, where the one or more radio frames include a plurality of OFDM symbols that carry synchronization signals, each OFDM symbol that carries a synchronization signal is sent by using one or more downlink beams of the base station, and the OFDM symbol that carries the synchronization signal further carries a downlink control signal. The downlink control signal is placed in the OFDM symbol that carries the synchronization signal.
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公开(公告)号：US10897579B2
公开(公告)日：2021-01-19
申请号：US16429748
申请日：2019-06-03
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yun Zhao , Yining Huang , Xi Zhang
Abstract: A photographing method includes entering a slow shutter photographing mode, dividing each frame of image of the photographed object into a light trail region, a background light source region, and a non-light-source region, merging the light trail regions of the frames of images, setting a merged light trail region as a light trail region of a target image, setting the background light source regions of one or more of the frames of images as a background light source region of the target image to avoid overexposure, merging the non-light-source regions of one or more of the frames of images, setting a merged non-light-source region as a non-light-source region of the target image to enhance brightness of the non-light-source region, and storing the target image after obtaining a photographing instruction.
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Patent Agency Ranking
公开(公告)号：US20200244862A1
公开(公告)日：2020-07-30
申请号：US16847178
申请日：2020-04-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yinting Wang , Biying Hu , Xi Zhang
Abstract: The present invention discloses an image processing method and apparatus, and a device. The method includes: obtaining N frames of images; determining one of the N frames of images as a reference image, where the other N-1 frames of images are to-be-processed images; obtaining N-1 frames of ghost-free images based on the N-1 frames of to-be-processed images; and performing an averaging operation on the reference image and the N-1 frames of ghost-free images, to obtain a first target image. The method can provide a snapshot mode for a camera, so that a user can snap a sharp image in different scenes, thereby improving user experience.
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公开(公告)号：US10715367B2
公开(公告)日：2020-07-14
申请号：US16518574
申请日：2019-07-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xi Zhang , Minghui Xu , Lei Chen
Abstract: An information transmission method related to the field of communications technologies includes: generating an orthogonal frequency division multiplexing (OFDM) symbol, where the OFDM symbol includes a pi/2-BPSK modulated data signal and a pi/2-binary phase shift keying (BPSK) modulated phase tracking reference signal (PTRS); and sending the OFDM symbol. This method may be applied to an uplink single carrier transmission scenario or a downlink single carrier transmission scenario.
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公开(公告)号：US10615933B2
公开(公告)日：2020-04-07
申请号：US16118657
申请日：2018-08-31
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Abstract: Embodiments of the present disclosure provide systems, methods and apparatus for reference signal configuration. The method includes: mapping a phase tracking reference signal (PTRS) to one or more OFDM symbols based on information about a correspondence between the PTRS and one or more of a modulation and coding scheme (MCS), a subcarrier spacing, and a bandwidth (BW); and sending the one or more OFDM symbols to which the PTRS is mapped to a receive device. In the embodiments of the present invention, a correspondence between the PTRS and the subcarrier spacing or the modulation and coding scheme or the bandwidth is used to implicitly indicate a time-frequency location of the PTRS. In comparison with the prior art, no explicit indication is required, and signaling overheads are reduced.
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公开(公告)号：US20180367277A1
公开(公告)日：2018-12-20
申请号：US16118657
申请日：2018-08-31
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Abstract: Embodiments of the present disclosure provide systems, methods and apparatus for reference signal configuration. The method includes: mapping a phase tracking reference signal (PTRS) to one or more OFDM symbols based on information about a correspondence between the PTRS and one or more of a modulation and coding scheme (MCS), a subcarrier spacing, and a bandwidth (BW); and sending the one or more OFDM symbols to which the PTRS is mapped to a receive device. In the embodiments of the present invention, a correspondence between the PTRS and the subcarrier spacing or the modulation and coding scheme or the bandwidth is used to implicitly indicate a time-frequency location of the PTRS. In comparison with the prior art, no explicit indication is required, and signaling overheads are reduced.
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公开(公告)号：US20180310322A1
公开(公告)日：2018-10-25
申请号：US16022309
申请日：2018-06-28
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
CPC classification number: H04W72/085 , H04B7/0602 , H04J3/1694 , H04L5/00 , H04L5/0023 , H04W72/048 , H04W72/1273 , H04W72/1289
Abstract: The present disclosure provides a downlink data transmission method, including: using a time-division multiplexing transmission mode in one transmission time interval; sending, by using a wide beam, a control signal to a user served in the current transmission time interval; and grouping users and sending data signals to different user groups by using different narrow beams. In one transmission time interval, time-division multiplexing is used, and a wide beam and a narrow beam are respectively used to transmit a control signal and a data signal. This can avoid a throughput bottleneck resulting from use of a transmission scheme that is based on frequency-division multiplexing only.
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