Design and experimental verification OTA system architecture based on ECE-R156

The widespread application of OTA technology has promoted the process of software-defined vehicles. In order to achieve the development of OTA cloud platform and vehicle terminal communication links and meet the authenticity and integrity requirements of foreign ECE-R156 regulations. This paper designs the four-layer hierarchical architecture of the cloud platform and deploys the cloud platform through front-end and back-end offloading. Vehicle-side architecture design, and definition of version detection, software package download, and update installation during the update process. An OTA system security architecture scheme is proposed, the cloud platform signs the uploaded software package, uses HTTPS encrypted channel transmission, and the vehicle terminal verifies and decrypts the software package. Finally, the OTA test environment is built, and the software upgdate test of the automotive VCU is carried out to verify the effectiveness of the OTA system architecture and the system security scheme.