公开(公告)号：US11328135B2

公开(公告)日：2022-05-10

申请号：US17030915

申请日：2020-09-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huaizhi Zhang ,  Sunjie Wang ,  Bo Han ,  Lang Wang ,  Mei Jian ,  Junfeng Gao

IPC: G06K7/00 ,  G06K7/10

Abstract: This application discloses example radio frequency identification systems and example methods for constructing a relay network, a reader, and a repeater. One example radio frequency identification system includes a reader, a repeater, and a target tag. The reader can be configured to send a first signal to the repeater. The repeater can be configured to send an excitation signal to the target tag based on the first signal. The target tag can be configured to send a target backscatter signal based on excitation of the excitation signal, where the target backscatter signal carries electronic product code information. The reader can be further configured to receive the target backscatter signal and obtain the electronic product code information in the target backscatter signal.

公开(公告)号：US20250007568A1

公开(公告)日：2025-01-02

申请号：US18884049

申请日：2024-09-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yujian Tang ,  Jiachen Liu ,  Yu Su ,  Lang Wang ,  Jun Chen

IPC: H04B7/04 ,  H04B7/0426

Abstract: The present disclosure provides an intelligent reflection surface, a signal sending method and apparatus, and a storage medium, and belong to the field of wireless communication. In embodiments of this application, the intelligent reflection surface receives adjustment information sent by a first wireless device, and adjusts an on/off state of the intelligent reflection surface based on the adjustment information.

公开(公告)号：US20240223428A1

公开(公告)日：2024-07-04

申请号：US18604700

申请日：2024-03-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun CHEN ,  Mao Yan ,  Yiling Wu ,  Sunjie Wang ,  Yujian Tang ,  Lang Wang

IPC: H04L27/26 ,  H04L27/36

CPC classification number: H04L27/26362 ,  H04L27/2605 ,  H04L27/36

Abstract: This application provides a signal transmission method and an apparatus, to reduce an envelope ripple of a transmission signal. The method includes: A base station obtains a first bit sequence and maps the first bit sequence to a first modulation symbol sequence, where a value of each modulation symbol in the first modulation symbol sequence belongs to a first constellation point set, the first constellation point set includes K modulation symbols, and each of the K modulation symbols has a different amplitude. The base station sequentially performs a DFT, weighting, and an IFFT on each modulation symbol in the first modulation symbol sequence to obtain a first signal. Based on the foregoing solution, an envelope ripple of the signal generated by the base station in time domain is small. This facilitates demodulation of the transmission signal by a terminal.