公开(公告)号：US20200186311A1

公开(公告)日：2020-06-11

申请号：US16788237

申请日：2020-02-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Minghui XU ,  Xi ZHANG

IPC: H04L5/00 ,  H04W72/00 ,  H04W72/04

Abstract: This application provides an information transmission method and apparatus. The method includes: determining a time domain density of a phase tracking reference signal PTRS; determining a frequency domain density of the phase tracking reference signal PTRS based on available bandwidth, or determining a frequency domain density of the phase tracking reference signal PTRS based on a scheduled resource block RB or an available resource block RB; mapping the PTRS to one or more orthogonal frequency division multiplexing OFDM symbols based on the time domain density and the frequency domain density; and sending a signal that includes the OFDM symbol to which the PTRS is mapped. The corresponding apparatus is also disclosed. When the technical solution of this application is used, a quantity of PTRSs can be prevented from jumping when a value of scheduled bandwidth is close to a threshold, both accuracy of common phase error estimation and spectral efficiency are taken into consideration, and the PTRSs can be uniformly mapped in the scheduled or available bandwidth, thereby properly configuring the PTRSs.

公开(公告)号：US20220116246A1

公开(公告)日：2022-04-14

申请号：US17490907

申请日：2021-09-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xi ZHANG ,  Minghui XU

IPC: H04L25/02 ,  H04L1/00 ,  H04L5/00 ,  H04W72/04

Abstract: This application discloses a communication method and a communications apparatus. The method includes: determining, by a first device, a phase tracking reference signal PTRS pattern, where the PTRS pattern includes one or more PTRS chunks, and each PTRS chunk includes one or more PTRS samples; and mapping, by the first device, a PTRS to one or more symbols, and sending the one or more symbols to a second device.

公开(公告)号：US20200336354A1

公开(公告)日：2020-10-22

申请号：US16922692

申请日：2020-07-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xi ZHANG ,  Minghui XU ,  Lei CHEN

IPC: H04L27/26 ,  H04L5/00 ,  H04L27/20

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.

公开(公告)号：US20200229034A1

公开(公告)日：2020-07-16

申请号：US16837798

申请日：2020-04-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Minghui XU ,  Xi ZHANG

IPC: H04W28/06 ,  H04W72/04

Abstract: This application discloses a data reporting method, a data receiving method, and related apparatuses. In this application, a terminal device reports, to a network device, one group of information used to indicate scheduling bandwidth thresholds and/or scheduling MCS thresholds. Compared with directly reporting thresholds, in this application, fewer bits can be occupied, thereby reducing overheads.

公开(公告)号：US20200067628A1

公开(公告)日：2020-02-27

申请号：US16673544

申请日：2019-11-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Minghui XU ,  Peng GUAN ,  Xi ZHANG

IPC: H04L1/00 ,  H04L5/00 ,  H04W72/04

Abstract: Embodiments of this application disclose a wireless communication method and an apparatus. The method includes: determining a target MCS if a current MCS exceeds a predetermined threshold, where the target MCS is an MCS less than or equal to the predetermined threshold; mapping a PTRS to one or more symbols based on the target MCS; and sending, to a terminal device, the symbol to which the PTRS is mapped. through implementation of the embodiments of this application, when the current MCS exceeds the predetermined threshold, the target MCS that is less than or equal to the predetermined threshold may be determined, so that a density of a PTRS on a time-frequency resource can be flexibly determined based on the target MCS and an association relationship between an MCS threshold and a time domain density of a PTRS, thereby helping reduce resource overheads of the PTRS.

公开(公告)号：US20200021412A1

公开(公告)日：2020-01-16

申请号：US16580759

申请日：2019-09-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Minghui XU ,  Xi ZHANG

IPC: H04L5/00 ,  H04L1/00

Abstract: This application provides a wireless communication method and a wireless communications apparatus. The method includes: sending first indication information to a network device, wherein the first indication information is used to indicate at least one of a modulation and coding scheme threshold that is corresponding to a pattern of a phase tracking reference signal and recommended by a terminal device, a scheduled resource block quantity threshold that is corresponding to the pattern of the phase tracking reference signal and recommended by the terminal device, and a factor of impact of phase noise of the terminal device on a signal received by the terminal device; and receiving the phase tracking reference signal sent by the network device.

公开(公告)号：US20240178966A1

公开(公告)日：2024-05-30

申请号：US18428263

申请日：2024-01-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Minghui XU ,  Fengwei LIU ,  Jiayin ZHANG

IPC: H04L5/00 ,  H04L27/26

CPC classification number: H04L5/0051 ,  H04L5/0007 ,  H04L27/2613

Abstract: A phase tracking reference signal (PTRS) transmission method and apparatus are provided, to improve demodulation performance. The method includes: determining a first PTRS pattern; and transmitting a PTRS based on the first PTRS pattern, where the first PTRS pattern belongs to a first PTRS pattern set, the first PTRS pattern set includes a plurality of PTRS patterns, and none of all PTRS groups in each PTRS pattern in an OFDM symbol is located at a tail of the OFDM symbol; and the PTRS pattern includes a plurality of PTRS groups, and each PTRS group includes a plurality of consecutive PTRS sampling points.

公开(公告)号：US20220006560A1

公开(公告)日：2022-01-06

申请号：US17374672

申请日：2021-07-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Minghui XU ,  Peng GUAN ,  Xi ZHANG

IPC: H04L1/00 ,  H04L5/00 ,  H04W72/04

Abstract: Embodiments of this application disclose a wireless communication method and an apparatus. The method includes: determining a target MCS if a current MCS exceeds a predetermined threshold, where the target MCS is an MCS less than or equal to the predetermined threshold; mapping a PTRS to one or more symbols based on the target MCS; and sending, to a terminal device, the symbol to which the PTRS is mapped. through implementation of the embodiments of this application, when the current MCS exceeds the predetermined threshold, the target MCS that is less than or equal to the predetermined threshold may be determined, so that a density of a PTRS on a time-frequency resource can be flexibly determined based on the target MCS and an association relationship between an MCS threshold and a time domain density of a PTRS, thereby helping reduce resource overheads of the PTRS.

公开(公告)号：US20200220750A1

公开(公告)日：2020-07-09

申请号：US16821544

申请日：2020-03-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xi ZHANG ,  Minghui XU

IPC: H04L25/03 ,  H04L5/00 ,  H04L27/00 ,  H04L27/26

Abstract: This application provides a reference signal transmission method and transmission apparatus. The transmission 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, when a ratio of the first bandwidth to the frequency domain density of the PTRS is a non-integer; wherein the first bandwidth is a bandwidth scheduled by a network device for the terminal device; and sending or receiving the PTRS based on the resource block offset of the frequency domain position of the PTRS.

公开(公告)号：US20200092032A1

公开(公告)日：2020-03-19

申请号：US16688212

申请日：2019-11-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xi ZHANG ,  Minghui XU ,  Huang HUANG

IPC: H04L1/00 ,  H04B15/00 ,  H04L5/00 ,  H04W72/04 ,  H04W80/02 ,  H04W76/27

Abstract: This application discloses a resource unit setting method, a resource unit transmission method, and an apparatus. The method includes: setting, by a transmit end device based on a setting threshold of a null resource unit and/or a scheduling parameter, a plurality of null resource units at time domain and/or frequency domain locations associated with phase tracking reference signal resource units of one or more OFDM symbols; and sending, by the transmit end device, the one or more OFDM symbols. The corresponding apparatus is further disclosed. In the technical solution of this application, the null resource unit is set based on the setting threshold of the null resource unit and/or the scheduling parameter. Demodulation accuracy of a high-frequency communications system is ensured, and overheads of the null resource unit are as low as possible, thereby improving spectrum efficiency.