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：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：US20240056852A1

公开(公告)日：2024-02-15

申请号：US18492609

申请日：2023-10-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04W24/08 ,  H04W24/02

CPC classification number: H04W24/08 ,  H04W24/02

Abstract: Embodiments of this application provide a communication method and apparatus, to improve robustness of a communication process and improve accuracy of a sensing result. The communication method includes: generating a first physical layer protocol data unit (PPDU), where the first PPDU includes a first field that indicates that a variation of a channel state does not exceed a threshold; and sending the first PPDU.

公开(公告)号：US20230016889A1

公开(公告)日：2023-01-19

申请号：US17951519

申请日：2022-09-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Meihong ZHANG ,  Xiangwen GUO ,  Xiao HAN ,  Jiahui ZHANG ,  Rui DU ,  Chenchen LIU ,  Yan LONG ,  Yingxiang SUN

IPC: H04W16/28 ,  H04W24/10

Abstract: This provides a spatial multiplexing method and apparatus, to introduce WLAN sensing into a conventional spatial multiplexing mechanism and improve communication efficiency. The method includes: An AP sends a first request message to a first station and a second station, to request to measure channel quality in one or more sensing beam directions in a first SP; the AP sends a second request message to a third station and a fourth station, to request to measure channel quality in a communications beam direction in a second SP; the first station, the second station, the third station, and the fourth station separately perform measurement and report respective first measurement results; and the AP receives the first measurement results of the stations, and determines, based on the first measurement results, whether to perform spatial multiplexing on the first SP and the second SP.

公开(公告)号：US20240031050A1

公开(公告)日：2024-01-25

申请号：US18446764

申请日：2023-08-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Rui DU ,  Qian ZHANG ,  Xiao HAN ,  Xun YANG ,  Chenchen LIU ,  Meihong ZHANG ,  Yingxiang SUN ,  Yun ZHANG ,  Yang LI

IPC: H04J13/00 ,  H04L25/02

CPC classification number: H04J13/0014 ,  H04L25/0242

Abstract: This application discloses a signal processing method and an apparatus. The method includes: A transmit device generates a PPDU, and sends the PPDU; and a receive device receives the PPDU, and processes M sequences carried in the PPDU. The PPDU shown in this application includes a first field, the first field is used for carrying M sequences, the M sequences correspond to M space-time streams, one sequence corresponds to one space-time stream, and M is a positive integer. According to the method provided in this application, sequence sending efficiency can be effectively improved.

公开(公告)号：US20240007885A1

公开(公告)日：2024-01-04

申请号：US18366107

申请日：2023-08-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: H04W24/08

CPC classification number: H04W24/08

Abstract: A method for sending a measurement packet and a communication apparatus. The method includes: a first wireless device sends a trigger frame, where the trigger frame is used to trigger a plurality of second wireless devices to send measurement packets in an orthogonal frequency division multiple access (OFDMA) manner; and the first wireless device receives the measurement packets sent by the plurality of second wireless devices in the OFDMA manner. Based on the method, the measurement packet sent by each second wireless device occupies only some tones of an uplink transmission bandwidth. This improves power spectral density of the measurement packet and improves precision of measuring channel information by the first wireless device.

公开(公告)号：US20230018459A1

公开(公告)日：2023-01-19

申请号：US17949453

申请日：2022-09-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Rui DU ,  Xiao HAN ,  Chenchen LIU ,  Meihong ZHANG ,  Yingxiang SUN ,  Danny Kai Pin TAN

IPC: H04W74/08 ,  H04B7/0452

Abstract: A wireless local area network sensing method. The method includes: in a process in which a second network device performs high frequency MIMO channel access, a first network device sends indication information to a plurality of second network devices, where the indication information indicates the plurality of second network devices to send uplink sensing signals; and the first network device receives the uplink sensing signals from the second network devices and performs uplink sensing based on the uplink sensing signals.

公开(公告)号：US20220345188A1

公开(公告)日：2022-10-27

申请号：US17859093

申请日：2022-07-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chenchen LIU ,  Meihong ZHANG ,  Wei WANG ,  Shuyu SHI ,  Xiao HAN ,  Rui DU ,  Jian YU ,  Yunbo LI ,  Yingxiang SUN

IPC: H04B7/06 ,  H04W24/10 ,  H04L5/00

Abstract: A method includes: A first node sends a threshold and a first packet to a second node. Correspondingly, the second node receives the threshold and the first packet from the first node. Then, the second node determines first channel state information CSI based on the first packet. If a change amount of the first CSI relative to preset CSI exceeds the threshold, the second node sends a second packet to the first node. If the change amount of the first CSI relative to the preset CSI does not exceed the threshold, the second node does not need to send the second packet to the first node. The method is applied to a radio sensing process.