公开(公告)号：US20220006669A1

公开(公告)日：2022-01-06

申请号：US17481507

申请日：2021-09-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xuehuan Wang ,  Xingxin Zhang

IPC: H04L12/46 ,  H04L12/427 ,  H04L12/437 ,  H04L12/703 ,  H04L12/751 ,  H04W4/48

Abstract: This application provides an in-vehicle communications system used in a vehicle. The in-vehicle communications system includes a control device, a plurality of gateway devices, and a plurality of communication endpoints. Each gateway device is communicatively coupled to the control device, and each gateway device is communicatively coupled to at least two other gateway devices. Each gateway device is further communicatively coupled to at least one communication endpoint. A gateway device or a controller is configured to: when receiving communication data of end-to-end communication, route the communication data by using a first communication link indicated by a local routing policy, and if the first communication link is abnormal, route a part or all of the communication data by using a second communication link. The system may be used in the field of assisted driving and self-driving.

公开(公告)号：US10536319B2

公开(公告)日：2020-01-14

申请号：US16358207

申请日：2019-03-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qingyong Chen ,  Bo Wang ,  Xingxin Zhang ,  Chunhui Zhu

IPC: H04L27/36 ,  H04L27/38

Abstract: Embodiments of the present application disclose a modulation method, including: performing coding processing on raw data to obtain a coded sequence; performing constellation mapping on the coded sequence based on a preset constellation diagram, to obtain M symbols; dividing the M symbols into N segments; obtaining a constellation phase of each symbol in the N segments; adjusting a constellation phase of a symbol in each of the N segments according to a preset phase adjustment rule, where the N segments are concurrently adjusted; and modulating M symbols obtained through phase adjustment, to obtain a modulated signal, and sending the modulated signal. Correspondingly, this application further provides a demodulation method, a sending device, a receiving device, and a communications system.