公开(公告)号：US20230345283A1

公开(公告)日：2023-10-26

申请号：US18341059

申请日：2023-06-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yingxiang SUN ,  Chenchen LIU ,  Xiao HAN ,  Rui DU ,  Meihong ZHANG ,  Xun YANG

IPC: H04W24/10

CPC classification number: H04W24/10

Abstract: A channel information feedback method. The method can be applied to a first wireless device, and includes: receiving a first message from a second wireless device, where the first message notifies channel information measurement, the first message carries first indication information related to the first wireless device, and the first indication information indicates a feedback condition; performing channel information measurement based on the first message; determining a first channel information variation based on currently measured channel information and historically measured channel information; and feeding back a measurement report to the second wireless device when the first channel information variation meets the feedback condition.

公开(公告)号：US20230132850A1

公开(公告)日：2023-05-04

申请号：US18147035

申请日：2022-12-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chenchen LIU ,  Yunbo LI ,  Rui DU ,  Meihong ZHANG ,  Xiao HAN

IPC: G01S13/58 ,  G01S13/00 ,  G01S7/00 ,  H04W24/10 ,  H04W64/00

Abstract: This application provides a sensing measurement information exchange apparatus, applied to a first station. The apparatus includes: a transceiver unit, configured to receive sensing measurement report information sent by a second station, where the sensing measurement report information includes N groups of first measurement results, where the N groups of first measurement results are in a one-to-one correspondence with N first transmission paths between the first station and the second station, and each group of first measurement results includes an angle of arrival, relative time of flight, and a Doppler frequency shift of a corresponding first transmission path; and a processing unit, configured to obtain angles of arrival, relative time of flight, and Doppler frequency shifts of the N first transmission paths based on the sensing measurement report information. This application implements measurement of locations and instantaneous speeds of a plurality of passive targets.

公开(公告)号：US20230064452A1

公开(公告)日：2023-03-02

申请号：US17975884

申请日：2022-10-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chenchen LIU ,  Dandan LIANG ,  Jian YU ,  Ming GAN ,  Meihong ZHANG

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

Abstract: This application discloses a data transmission method that includes: scrambling to-be-transmitted data, to obtain scrambled data; and sending the scrambled data to a receive device. The initialization bits of a scrambler used to scramble the data include a first bit sequence and a second bit sequence. The first bit sequence is carried in a service field of the to-be-transmitted data, the second bit sequence reuses a bit in a signal field of a physical layer protocol data unit (PPDU), and the quantity of the initialization bits is equal to the order of the scrambler. In embodiments of this application, when the transmit device and the receive device use the scrambler with a higher order than that in the conventional technology, the initialization bits of the scrambler are based on bits in an existing service field used for data scrambling and reused bits in some signal fields.

公开(公告)号：US20220268912A1

公开(公告)日：2022-08-25

申请号：US17740487

申请日：2022-05-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Meihong ZHANG ,  Xiangwen GUO ,  Jiahui ZHANG ,  Xiao HAN ,  Rui DU ,  Chenchen LIU ,  Li YAN ,  Xuming FANG

IPC: G01S13/06

Abstract: A method for assisting in locating a target object, a method for locating a target object, and an apparatus. In an embodiment, the method for assisting in locating a target object is applied to a station (STA), and the method includes: receiving a wireless sensing sounding frame including radar measurement indication information from an access point (AP); sending an uplink data packet to the AP, recording a first sending moment, and performing radar measurement on a target object based on the radar measurement indication information to obtain a radar measurement result; receiving a downlink data packet from the AP, and recording a first receiving moment; and sending the first sending moment, the first receiving moment and the radar measurement result to the AP.

公开(公告)号：US20220066018A1

公开(公告)日：2022-03-03

申请号：US17454101

申请日：2021-11-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiao HAN ,  Cailian DENG ,  Rui DU ,  Chenchen LIU ,  Jian YU ,  Meihong ZHANG ,  Li YAN ,  Yan LONG

IPC: G01S13/76 ,  G01S7/00

Abstract: A radar measurement method and an apparatus are disclosed, which relate to the field of communications technologies, and are used to support radar measurement in a wireless local area network (WLAN). The method includes: An access point (AP) generates a first frame, where the first frame includes radar measurement information. Then the AP sends the first frame to M stations (STAs), to configure the way the M STAs perform radar measurement. This application is applicable to a radar measurement procedure.

公开(公告)号：US20240118379A1

公开(公告)日：2024-04-11

申请号：US18541563

申请日：2023-12-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Rui DU ,  Chenchen LIU ,  Meihong ZHANG ,  Xiao HAN ,  Mengshi HU ,  Xun YANG

IPC: G01S7/00 ,  G01S13/86 ,  H04L25/02

CPC classification number: G01S7/006 ,  G01S13/86 ,  H04L25/0202 ,  H04W84/12

Abstract: A sensing result feedback method, an apparatus, a device, and a medium are provided. In an example method, a sensing initiating device sends an indication about truncation and feedback of a time domain channel estimation and sensing sequence to a first sensing responding device. The first sensing responding device truncates the received time domain channel estimation and sensing sequence based on the indication, and feeds back the truncated time domain channel estimation and sensing sequence. Therefore, a sensing sender may perform channel estimation and target sensing based on the truncated time domain channel estimation and sensing sequence. In this manner, feedback overheads can be significantly reduced, and sensing performance can be ensured to some extent.

公开(公告)号：US20240022290A1

公开(公告)日：2024-01-18

申请号：US18370491

申请日：2023-09-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Rui DU ,  Chenchen LIU ,  Xiao HAN ,  Meihong ZHANG ,  Yingxiang SUN ,  Yunbo LI

IPC: H04B7/0426 ,  H04B7/06

CPC classification number: H04B7/0426 ,  H04B7/0626

Abstract: Provided are a method for performing feedback based on channel state information (CSI), a device, and a medium. In an example method, a sensing response device obtains CSI data based on channel estimation, and generates power delay profile (PDP) data based on the CSI data. Then, the sensing response device feeds back a part of PDP data in the generated PDP data. Therefore, feedback overheads are reduced. In addition, sensing performance is ensured to some extent.

公开(公告)号：US20220308194A1

公开(公告)日：2022-09-29

申请号：US17837843

申请日：2022-06-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Meihong ZHANG ,  Xiao HAN ,  Rui DU ,  Chenchen LIU

IPC: G01S13/00 ,  G01S13/10 ,  G01S7/00

Abstract: This application provides example object locating methods and apparatuses. One example method includes performing, by a first device, pulse measurement on a target object with assistance of a second device, where the pulse measurement is performed on the target object by using two types of pulse signals, and pulse repetition frequencies of the two types of pulse signals are different. The first device can then locate the target object based on a pulse measurement result of the pulse measurement.

公开(公告)号：US20220279365A1

公开(公告)日：2022-09-01

申请号：US17743949

申请日：2022-05-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Rui DU ,  Huangxun CHEN ,  Yuchen GUO ,  Chenchen LIU ,  Meihong ZHANG ,  Qian ZHANG ,  Xiao HAN

IPC: H04W24/02 ,  H04B17/309

Abstract: A first device sends a first message to a second device, where the first message indicates to the second device to hop to different channels at different times to send radio signals. The frequency bandwidth ranges of any two channels do not completely overlap, and the frequency bandwidth range of each channel is within a total frequency bandwidth range supported by the first device. The first device separately receives the radio signals that are sent by the second device on different channels at different times. The radio signals reach the first device after being reflected by an intermediate object. The first device measures the state information of the intermediate object based on the physical characteristics of the different radio signals that are separately received.

公开(公告)号：US20220200753A1

公开(公告)日：2022-06-23

申请号：US17692292

申请日：2022-03-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chenchen LIU ,  Xiao HAN ,  Rui DU ,  Meihong ZHANG ,  Jian YU

IPC: H04L5/00 ,  H04L25/02

Abstract: This application provides a method and an apparatus for sensing measurement. In a technical solution of this application, a transmit end of data may send an indication frame to a receive end of the data, where the indication frame may indicate a spatial mapping matrix used by the transmit end of the data to send the data to the receive end of the data. In this way, the receive end of the data can eliminate impact of spatial mapping on channel state information based on the spatial mapping matrix, to obtain actual channel state information, thereby completing sensing, positioning, and the like on an ambient environment or a passive target by using the obtained actual channel state information.