公开(公告)号：US20200076649A1

公开(公告)日：2020-03-05

申请号：US16676906

申请日：2019-11-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yong Liu ,  Xiang Ren ,  Lu Wu

IPC: H04L25/02 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04

Abstract: Embodiments of this application disclose a method and apparatus for sending a demodulation reference signal, and a demodulation method and apparatus, and relate to the field of communications technologies. The method for sending a demodulation reference signal may include: generating a demodulation reference signal, where a sequence length of the demodulation reference signal is related to an attribute of the demodulation reference signal; and sending the demodulation reference signal.

公开(公告)号：US10511411B2

公开(公告)日：2019-12-17

申请号：US16237465

申请日：2018-12-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei Han ,  Yong Liu ,  Shibin Ge ,  Huangping Jin ,  Xiaoyan Bi ,  Xiang Ren

IPC: H04L1/06 ,  H04L5/00 ,  H04B7/06

Abstract: This application provides a method for configuring a channel state information reporting band, a reporting method, and a corresponding apparatus. The method includes: determining a channel state information subband size based on a bandwidth part BWP; and determining, a quantity of channel state information subbands included in a channel state information reporting band, based on a carrier bandwidth CC bandwidth or the bandwidth part BWP bandwidth or 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 included in an ending subband in the channel state information subband. Implementation of this application makes configuration of a quantity and size of subbands in a CSI reporting band more flexible, and reduces complexity of terminal addressing.

公开(公告)号：US20190222354A1

公开(公告)日：2019-07-18

申请号：US16237465

申请日：2018-12-31

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Wei Han ,  Yong Liu ,  Shibin Ge ,  Huangping Jin ,  Xiaoyan Bi ,  Xiang Ren

IPC: H04L1/06 ,  H04L5/00 ,  H04B7/06

Abstract: This application provides a method for configuring a channel state information reporting band, a reporting method, and a corresponding apparatus. The method includes: determining a channel state information subband size based on a bandwidth part BWP; and determining, a quantity of channel state information subbands included in a channel state information reporting band, based on a carrier bandwidth CC bandwidth or the bandwidth part BWP bandwidth or 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 included in an ending subband in the channel state information subband. Implementation of this application makes configuration of a quantity and size of subbands in a CSI reporting band more flexible, and reduces complexity of terminal addressing.

公开(公告)号：US12244381B2

公开(公告)日：2025-03-04

申请号：US17852957

申请日：2022-06-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang Ren ,  Huangping Jin ,  Xiaohan Wang ,  Shibin Ge ,  Yiling Yuan

IPC: H04B7/06

Abstract: This application describes a channel information feedback method and a communication apparatus. The method includes a terminal device that receives configuration information sent by a network device, where the configuration information is used to configure a feedback mode of channel information. The terminal device may feed back current channel information to the network device when the feedback mode configured by using the configuration information is a first mode. The terminal device may alternatively feeds back predicted channel information to the network device when the feedback mode configured by using the configuration information is a second mode. System performance is therefore improved by the method described in this application because channel information feedback requirements in different scenarios can be met. In particular, a problem that data transmission performance deteriorates because channel information expires in a moving scenario can be resolved by feeding back the predicted channel information.

公开(公告)号：US12184579B2

公开(公告)日：2024-12-31

申请号：US18464886

申请日：2023-09-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang Ren ,  Yong Liu ,  Shibin Ge ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04L5/02 ,  H04L5/10

Abstract: Embodiments of this application disclose a method and an apparatus for transmitting a DMRS, and relate to the field of communications technologies. The method and the apparatus are applicable to an NR system. The method for transmitting a DMRS may include: determining a time-frequency resource used to carry a DMRS; and then sending the DMRS by using the time-frequency resource.

公开(公告)号：US20230421328A1

公开(公告)日：2023-12-28

申请号：US18464886

申请日：2023-09-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang Ren ,  Yong Liu ,  Shibin Ge ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04L5/02

CPC classification number: H04L5/0051 ,  H04L5/0092 ,  H04L5/023 ,  H04L5/10

Abstract: Embodiments of this application disclose a method and an apparatus for transmitting a DMRS, and relate to the field of communications technologies. The method and the apparatus are applicable to an NR system. The method for transmitting a DMRS may include: determining a time-frequency resource used to carry a DMRS; and then sending the DMRS by using the time-frequency resource.

公开(公告)号：US11658709B2

公开(公告)日：2023-05-23

申请号：US17483419

申请日：2021-09-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaohan Wang ,  Huangping Jin ,  Xiang Ren ,  Wei Han ,  Xiaoyan Bi

IPC: H04B7/0456 ,  H04L25/02 ,  H04B7/0417

CPC classification number: H04B7/0456 ,  H04L25/0204 ,  H04B7/0417

Abstract: Embodiments of this application provide a channel estimation method and apparatus, and relate to the field of communications technologies, to help reduce indication overheads. The method includes: generating and sending indication information, where the indication information is used to indicate M N-dimensional precoding vectors, each precoding vector is applied to one of M frequency bands, the M N-dimensional precoding vectors form a space-frequency matrix, and the space-frequency matrix is generated by performing weighted combination on a plurality of space-frequency component matrices, where the space-frequency matrix is an M×N-dimensional space-frequency vector or an X×Y space-frequency matrix, X and Y are one and the other of M and N, M≥1, N≥2, and both M and N are integers.

公开(公告)号：US20220173866A1

公开(公告)日：2022-06-02

申请号：US17671575

申请日：2022-02-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Mingzhe Wang ,  Hongzhe Shi ,  Xiang Ren ,  Liuliu Ji ,  Haicun Hang ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04J13/00 ,  H04J3/02

Abstract: A method and apparatus are provided for determining a transmission mode. A method embodiment includes obtaining, by a terminal device, configuration indication information, the configuration indication information comprising one or more of: DMRS indication information, repeated-transmission indication information, or transmission configuration indication information; and determining a transmission mode based on the configuration indication information, the transmission mode is one or more of: a space division multiplexing mode, a frequency division multiplexing mode, or a time division multiplexing mode.

公开(公告)号：US11239880B2

公开(公告)日：2022-02-01

申请号：US17061164

申请日：2020-10-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shibin Ge ,  Xiang Ren ,  Xiaoyan Bi

IPC: H04B1/7143 ,  H04L5/00 ,  H04L5/10 ,  H04W72/04

Abstract: This application provides a Demodulation Reference Signal (DMRS) transmission method and a communications device. The method includes: determining, by a communications device, a current mode of a resource scheduling unit, where the current mode is a frequency hopping mode or an aggregation mode, and performing, by the communications device, DMRS mapping or demapping by using a DMRS pattern corresponding to the current mode, where a location of a symbol occupied by a DMRS in the DMRS pattern corresponding to the current mode is different from a location of a symbol occupied by a DMRS in a preset DMRS pattern. In embodiments of this application, a location of a symbol occupied by a DMRS can be flexibly selected depending on different modes. Therefore, requirements of the different modes can be satisfied in the embodiments of this application, thereby improving network performance.

公开(公告)号：US10938531B2

公开(公告)日：2021-03-02

申请号：US16432525

申请日：2019-06-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiang Ren ,  Yong Liu ,  Xiaoyan Bi

IPC: H04L5/00 ,  H04W72/04

Abstract: A data transmission method includes: selecting, by a network device, at least one target time domain resource from a plurality of candidate time domain resources, where the at least one target time domain resource is used to carry a demodulation reference signal (DMRS); and sending, by the network device, first indication information to a terminal device, where the first indication information is used to indicate the at least one target time domain resource.