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公开(公告)号:US12244382B2
公开(公告)日:2025-03-04
申请号:US17887209
申请日:2022-08-12
Applicant: Huawei Technologies Co., Ltd.
Inventor: Shibin Ge , Huangping Jin , Xiaohan Wang , Yiling Yuan , Xiaoyan Bi
IPC: H04B7/06 , H04B7/0456
Abstract: A channel state information feedback method includes: a terminal receives first indication information from a network device, and the terminal sends channel state information to the network device. The first indication information is used to indicate a type of a right multiplication matrix in a first codebook, and the first codebook satisfies a formula (I). W is the first codebook, W1 is a port selection matrix, (II) is a linear superposition coefficient matrix, Wf is the right multiplication matrix, and (III) is a conjugate transpose of Wf, and is used by the terminal to determine the channel state information based on the first codebook. According to the method, when there are a plurality of codebooks, the codebook used by the terminal to obtain the CSI can be clearly indicated.
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公开(公告)号:US20240421866A1
公开(公告)日:2024-12-19
申请号:US18819597
申请日:2024-08-29
Applicant: Huawei Technologies Co., Ltd.
Inventor: Ting Li , Xiaohan Wang , Huangping Jin
IPC: H04B7/0456 , H04B7/06
Abstract: This application provides a channel state information feedback method and a communication apparatus. The method includes: A first apparatus generates indication information, and sends the indication information. The indication information is used to determine at least two precoding submatrices. Different precoding submatrices correspond to different port groups, and the different port groups may correspond to different stations. According to the channel state information feedback method provided in this application, the first apparatus may indicate the information for determining the at least two precoding submatrices, so that coherent joint transmission can be performed between a plurality of stations.
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公开(公告)号:US20230164004A1
公开(公告)日:2023-05-25
申请号:US18158216
申请日:2023-01-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Yiling Yuan , Shibin Ge , Huangping Jin , Xiaoyan Bi
IPC: H04L25/02
CPC classification number: H04L25/0224
Abstract: Embodiments of this application disclose methods and apparatuses for obtaining channel parameters. In an implementation, a method includes, sending, by a network device, a precoded reference signal and indication information indicating K selected frequency domain bases, wherein the precoded reference signal is generated on P ports by mapping K virtual ports associated with the K selected frequency domain bases to each of the P ports through beamforming, wherein K is an integer greater than 1, and wherein the P ports are precoded channel state information reference signal (CSI-RS) ports of the network device and user equipment, and receiving, by the network device, a linear superposition coefficient sent by the user equipment, wherein the linear superposition coefficient corresponds to M frequency domain bases in the K selected frequency domain bases and T ports in the P ports, wherein 1≤T≤P, and 1≤M≤K.
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公开(公告)号:US11445396B2
公开(公告)日:2022-09-13
申请号:US16674858
申请日:2019-11-05
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Wei Han , Huangping Jin , Ye Wu , Xiaoyan Bi
Abstract: Embodiments of the present invention provide a channel measurement method and an apparatus. The method includes: for a to-be-measured frequency band that includes at least one reporting subband and 0 or more non-reporting subbands, obtaining channel state information of each reporting subband, where the channel state information of each reporting subband is obtained based on channel estimation, and the at least one reporting subband is included in reporting subbands that are contiguous in frequency domain, or the at least one reporting subband is included in reporting subbands that are not contiguous in frequency domain; and sending a measurement report of the to-be-measured frequency band to a transmit end device, where the measurement report includes the channel state information of one or more of the at least one reporting subband.
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公开(公告)号:US11431384B2
公开(公告)日:2022-08-30
申请号:US17157318
申请日:2021-01-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Huangping Jin , Xiaohan Wang , Xiaoyan Bi
IPC: H04B7/0417 , H04B7/0456 , H04B7/06 , H04L25/02
Abstract: Embodiments of this application disclose a channel estimation method and apparatus, and relate to the field of communications technologies. The method may include: generating and sending indication information, where the indication information is used to indicate L space-frequency basis vectors for constructing an M×N-dimensional space-frequency vector; the space-frequency vector includes M N-dimensional precoding vectors, each precoding vector is used in one of M frequency bands, and the space-frequency vector is generated by performing a weighted combination on L space-frequency component vectors; each of the L space-frequency component vectors is a vector including M×N elements that are in one of the L space-frequency basis vectors, and each of the L space-frequency basis vectors is an Nf×N-dimensional vector; the space-frequency basis vector is a three-dimensional oversampled (DFT) vector; and L≥2, Nf≥M≥1, N≥2, and L, M, N, and Nf are all integers.
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6.
公开(公告)号:US11239950B2
公开(公告)日:2022-02-01
申请号:US16697115
申请日:2019-11-26
Applicant: Huawei Technologies Co., Ltd.
Inventor: Wei Han , Yong Liu , Shibin Ge , Huangping Jin , Xiaoyan Bi , Xiang Ren
Abstract: An apparatus and method are provided for a quantity and size of subbands in a channel state information (CSI) reporting band for flexibility and reduced complexity of terminal addressing. The method includes: determining a channel state information subband size based on a bandwidth part (BWP), determining a quantity of channel state information subbands included in a channel state information reporting band based on (i) a carrier bandwidth (CC bandwidth), (ii) the BWP bandwidth or (iii) a channel state information reference signal (CSI-RS) bandwidth and the channel state information subband size. The method further includes determining an actual quantity of resource blocks included in a starting subband and an actual quantity of resource blocks in an ending subband in the channel state information subband.
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7.
公开(公告)号:US10985824B2
公开(公告)日:2021-04-20
申请号:US16829389
申请日:2020-03-25
Applicant: Huawei Technologies Co., Ltd.
Inventor: Huangping Jin , Peng Jiang , Wei Han , Peng Shang
IPC: H04B7/06
Abstract: A channel state information feedback method includes: generating, by a transmit-end device, codebook indication information of K transport layers, where K is an integer greater than or equal to 1; and for each of at least one of the K transport layers, the codebook indication information includes narrowband superposition coefficients of N sub-bands of the layer, where a quantity of the narrowband superposition coefficients of the N sub-bands is less than R(L−1)*N, N is an integer greater than or equal to 2, R is a quantity of polarization directions and R is an integer greater than or equal to 1, and L is a quantity of pieces of beam information used by the K transport layers and L is an integer greater than or equal to 2; and sending, by the transmit-end device, the codebook indication information.
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公开(公告)号:US10979113B2
公开(公告)日:2021-04-13
申请号:US17005921
申请日:2020-08-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Huangping Jin , Wei Han , Peng Shang , Xiaoyan Bi
IPC: H04B7/0456 , H04B7/0417 , H04B7/04 , H04B7/06
Abstract: The present disclosure relates to channel state information (CSI) receiving methods and apparatus. One example method includes transmitting a pilot, and receiving feedback of W1 and W2 for each transport layer which are determined based on the pilot, where W1 and W2 are used to form a combined vector W for each transport layer, W=W1×W2, W1=[b1 b2 . . . bK], bi is a vector to be combined, W2=[X1 X2 . . . XK]T, Xi is a weighting coefficient corresponding to bi, K is a quantity of vectors in W1, K is a positive integer which is greater than 1, i is an integer, 1≤i≤K, and quantities of bits for feeding back at least two elements in W2 are different from each other.
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公开(公告)号:US10917149B2
公开(公告)日:2021-02-09
申请号:US16506995
申请日:2019-07-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Wei Han , Lu Wu , Huangping Jin
IPC: H04B7/0456 , H04B7/06
Abstract: Embodiments of the present application provide a parameter indication method and parameter determining method, a receive device, and a transmit device. The parameter indication method includes: generating indication information for each of a plurality of antenna panels, where the indication information is used to indicate an adjustment parameter of the antenna panel, and the adjustment parameter includes at least one of an amplitude adjustment parameter and a phase adjustment parameter; and sending the indication information. The embodiments of the present application further provide a parameter determining method, a receive device, and a transmit device. In the technical solutions provided in the embodiments of the present application, adjustment parameters of the plurality of antenna panels are fed back to adjust the plurality of antenna panels, so that a precoding vector constructed based on the plurality of antenna panels is more accurate.
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公开(公告)号:US20200322081A1
公开(公告)日:2020-10-08
申请号:US16824658
申请日:2020-03-19
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor: Jian Wang , Huangping Jin , Shengchen Dai , Rong Li , Yinggang Du , Jun Wang , Yiqun Ge
Abstract: The application provides method for communicating channel state information (CSI) in a communication network. The method is as follows: An apparatus determines whether a length of CSI is less than a preset length; and adds a padding bit to the CSI when determining that the length of the CSI is less than the preset length, where a length of CSI obtained by adding the padding bit is consistent with the predetermined length. The CSI obtained by adding the padding bit is communicated in the communication network.
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