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公开(公告)号：US20230361833A1
公开(公告)日：2023-11-09
申请号：US18222078
申请日：2023-07-14
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xiang GAO , Kunpeng LIU , Leiming ZHANG
IPC: H04B7/06
CPC classification number: H04B7/0626 , H04B7/0634
Abstract: Embodiments of this application provide for a channel state information reporting method and a related device. In the method, indication information may be generated and sent. In the indication information, a first group of indication information includes reference amplitude indication information corresponding to each spatial layer, and differential amplitude indication information and phase indication information of X weighting coefficients, and a second group of indication information includes differential amplitude indication information and phase indication information of Y weighting coefficients. Values of X and Y are related to a first parameter, and a sum of X and Y is equal to KNZ−v. It can be learned that the quantity of weighting coefficients included in each of the first group of indication information and the second group of indication information is determined based on the first parameter.
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公开(公告)号：US20220376762A1
公开(公告)日：2022-11-24
申请号：US17873580
申请日：2022-07-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jianguo WANG , Yongxing ZHOU , Leiming ZHANG
IPC: H04B7/06
Abstract: The present disclosure relates to methods for feeding back channel state information, user equipment, and base stations. One example method includes receiving a reference signal sent by a base station, selecting a precoding matrix W from a codebook according to the reference signal, where a column vector of the precoding matrix W may be expressed as α[vejϕv]T, v=[1 ejθ], and sending a precoding matrix indicator (PMI) to the base station, where the PMI corresponds to the precoding matrix W.
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公开(公告)号：US20200044713A1
公开(公告)日：2020-02-06
申请号：US16599877
申请日：2019-10-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jianguo WANG , Yongxing ZHOU , Leiming ZHANG
IPC: H04B7/06
Abstract: The present disclosure relates to methods for feeding back channel state information, user equipment, and base stations. One example method includes receiving a reference signal from a base station, selecting a precoding matrix W from a codebook according to the reference signal, and sending a precoding matrix indicator (PMI) to the base station, where the PMI corresponds to the selected precoding matrix W.
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公开(公告)号：US20200022172A1
公开(公告)日：2020-01-16
申请号：US16580773
申请日：2019-09-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yu SUN , Yi QIN , Zhongfeng LI , Leiming ZHANG , Shengyue DOU
Abstract: Embodiments of the present invention disclose a signal transmission method, including: sending, by a first device, a first reference signal to a second device, where the first reference signal is used for phase tracking; the first reference signal is mapped to a first symbol; the first symbol includes a symbol that carries a data signal and that precedes a second symbol; the second symbol is one or more consecutive symbols carrying a DMRS; and the one or more symbols include the 1st symbol carrying the DMRS. According to the foregoing solution, it can be ensured that a PT-RS is also mapped to a symbol to which a data channel is mapped and that precedes a symbol carrying a DMRS, thereby ensuring phase noise estimation performance.
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公开(公告)号：US20200021470A1
公开(公告)日：2020-01-16
申请号：US16580651
申请日：2019-09-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yu SUN , Yi Qin , Zhongfeng LI , Leiming ZHANG , Shengyue DOU
Abstract: A reference signal transmission method includes: sending, by a terminal, a first reference signal and a second reference signal; and correspondingly, receiving, by a network device, the first reference signal and the second reference signal, where the first reference signal is mapped to a plurality of symbols and is used for estimation of channel state information, the second reference signal is mapped to at least two of the plurality of symbols and is used for phase tracking, and a subcarrier to which the second reference signal is mapped on one of the at least two symbols has a same frequency-domain location as a subcarrier to which the second reference signal is mapped on the rest of the at least two symbols. With the foregoing solution, accuracy of channel state information estimation can be improved.
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Patent Agency Ranking
公开(公告)号：US20200007198A1
公开(公告)日：2020-01-02
申请号：US16567882
申请日：2019-09-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Kunpeng LIU , Jianghua LIU , Leiming ZHANG
IPC: H04B7/0417 , H04B7/0456 , H04L5/00 , H04W24/08
Abstract: Embodiments of the present invention provide a channel measurement and feedback method, a network device, and a system, and relate to the field of communications technologies. The method includes: receiving, by a first network device, pilot port configuration information sent by a second network device, where the pilot port configuration information is used to describe at least two pilot ports; measuring, by using the at least two pilot ports, a pilot signal sent by the second network device, and determining first information, where the first information includes at least one of second information of the first network device or third information of a third network device when it is assumed that the first network device and the third network device communicate with the second network device by performing spatial multiplexing on a same time frequency resource.
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公开(公告)号：US20190320338A1
公开(公告)日：2019-10-17
申请号：US16452892
申请日：2019-06-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Leiming ZHANG , Jianghua LIU , Yifan LIU
IPC: H04W24/10 , H04L5/00 , H04B17/336 , H04W72/04 , H04B7/06 , H04B7/0456 , H04W88/02
Abstract: The present disclosure discloses a method for transmitting an uplink measurement reference signal. The method is applied to a network-side device and includes the following operations: first, receiving, by the network-side device, an uplink measurement reference signal sent by user equipment, where the uplink measurement reference signal carries downlink interference information of a downlink channel of the network-side device; and then, performing downlink interference estimation on the uplink measurement reference signal, to obtain the downlink interference information. Compared with the prior art in which a base station cannot obtain downlink interference information of a downlink channel used by user equipment, in the present disclosure, the network-side device can effectively schedule the user equipment based on the downlink interference information, thereby improving scheduling efficiency, and improving data transmission efficiency of the downlink channel.
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公开(公告)号：US20190174424A1
公开(公告)日：2019-06-06
申请号：US16272522
申请日：2019-02-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xinqian XIE , Zhiheng GUO , Xingqing CHENG , Leiming ZHANG
Abstract: Embodiments of the present invention provide a data transmission method, including: allocating, based on a power ratio value of near user equipment to far user equipment in two paired user equipments, a transmit power to each of the near user equipment and the far user equipment, where the power ratio value is a ratio in a first ratio set, at least one ratio in the first ratio set can be selected from a second ratio set. Therefore, according to the embodiments of the present invention, a plurality of power ratio values of near user equipment to far user equipment in two paired user equipments can be provided, thereby increasing flexibility of a base station for the near user equipment and the far user equipment, and helping increase a performance gain that can be obtained by MUST transmission.
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39.发明申请公开(公告)号：US20180191410A1
公开(公告)日：2018-07-05
申请号：US15903496
申请日：2018-02-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jianghua LIU , Leiming ZHANG
IPC: H04B7/0456
CPC classification number: H04B7/0456 , H04B7/04 , H04B7/0478 , H04B7/0639 , H04B7/0658 , H04W72/042
Abstract: This application discloses a precoding information sending solution and a precoding information feedback solution. A base station generates a signaling indicator and sends the signaling indicator to user equipment. The signaling indicator indicates related information about a precoding matrix set determined by the base station from a stored codebook, where the precoding matrix set belongs to a subset of the stored codebook. The user equipment selects a precoding matrix according to the signaling indicator sent by the base station, and sends a precoding matrix indicator PMI to the base station. The precoding matrix is selected according to a precoding matrix set and a feedback is performed. Therefore, complexity of searching for the precoding matrix and precoding feedback bits may be reduced.
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公开(公告)号：US20180034615A1
公开(公告)日：2018-02-01
申请号：US15729325
申请日：2017-10-10
Applicant: Huawei Technologies Co., Ltd.
Inventor： Kunpeng LIU , Leiming ZHANG
CPC classification number: H04L5/0057 , H04L5/0048 , H04W24/10 , H04W72/0413 , H04W72/085
Abstract: Embodiments of the present invention relate to the field of communications technologies, and disclose a CSI measurement and feedback method and a device, so as to resolve a prior-art problem that flexibility is poor when the UE measures a measurement pilot and provides a feedback. In a specific solution, a first network device sends a first signal to a second network device. The first signal is used for the second network device to determine a first measurement pilot according to the first signal, and send the first measurement pilot to the first network device. The first network device receives the first measurement pilot sent by the second network device, and measures the first measurement pilot to obtain first CSI. The first CSI includes at least one of a CQI, a PMI, an RI, or port selection information.
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