公开(公告)号：US20240188106A1

公开(公告)日：2024-06-06

申请号：US18442384

申请日：2024-02-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shengjie ZHANG ,  Tao HUANG ,  Zhepeng MA

IPC: H04W72/30 ,  H04W72/0446

CPC classification number: H04W72/30 ,  H04W72/0446

Abstract: Example data transmission methods and apparatus are described. In one example method, a primary device sends a first data packet to a plurality of secondary devices. The primary device separately receives first identification information that is fed back by a respective one of the plurality of secondary devices and that indicates whether a corresponding secondary device successfully receives corresponding first data from the first data packet. The primary device selectively resends the first data packet based on the first identification information.

公开(公告)号：US20250150899A1

公开(公告)日：2025-05-08

申请号：US19018746

申请日：2025-01-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Cong CAO ,  Shengjie ZHANG ,  Tao HUANG

IPC: H04W28/082 ,  H04W88/06

Abstract: Example communication methods and apparatus are described. In one example method, a transmitting end first encapsulates, according to a first wireless communication protocol, to-be-transmitted data, then performs encapsulation according to a second wireless communication protocol. The transmitting end sends, by using a wireless communication technology corresponding to the second wireless communication protocol, a data frame obtained through encapsulation. Correspondingly, after receiving the data frame by using the wireless communication technology corresponding to the second wireless communication protocol, a receiving end first decapsulates the data frame according to the second wireless communication protocol, and then performs decapsulation according to the first wireless communication protocol to obtain the data sent by the transmitting end.

公开(公告)号：US20190154746A1

公开(公告)日：2019-05-23

申请号：US16233440

申请日：2018-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shengjie ZHANG ,  Jintao HAN

IPC: G01R31/02 ,  H02H1/00 ,  G01R31/327 ,  H02H3/16 ,  H02M3/155 ,  H02S40/30 ,  H02S50/10

Abstract: This application provides a noise generation circuit, a self-checking circuit, an AFCI, and a photovoltaic power generation system. The noise generation circuit includes a power switch module, a noise generator, and a capacitor, where the noise generator is connected to both the power switch module and the capacitor; the power switch module is configured to control, according to a self-checking instruction, whether the noise generator generates a noise signal; and the capacitor is configured to filter out a direct current component in the noise signal when the noise generator generates the noise signal. According to the noise generation circuit, the self-checking circuit, the AFCI, and the photovoltaic power generation system that are provided in this application, no noise signal is generated in a non self-checking time, thereby ensuring normal working of the AFCI and the photovoltaic inverter.