OTA upgrade service – endowing cars with the potential of continuous evolution
The upper reaches of the auto OTA industry chain are OTA solution providers, auto software developers and content providers, the middle reaches are vehicle manufacturers that provide OTA upgrade services, and the lower reaches are automobile terminals that use OTA upgrade services. Tesla has accumulated profound experience in OTA upgrade at this stage
At the present stage, the most important problem facing the upgrading of automobile Ota is the safety guarantee. At the same time, the development of automobile Ota is affected by factors such as the degree of standardization, the progress of communication infrastructure and automobile software development capability, industrial synergy, data accumulation and EE architecture development process. In the future, with the improvement of Ota upgrading safety, the industrial chain synergy will be strengthened, Auto OTA upgrading may enable the potential for continuous improvement of vehicles
Auto Ota is a remote unlimited upgrade technology including cloud, pipe and end
Ota is a remote wireless upgrade technology used by vehicles. It is divided into SOTA and FOTA according to different upgrade objects. The whole OTA architecture is composed of cloud platform, vehicle software management end and user end. The cloud is mainly responsible for maintaining data synchronization with the vehicle and providing support for a series of activities of real-time data analysis. The vehicle end is mainly responsible for downloading the software package and app application services transmitted from the cloud platform through the software management end. The vehicle end and the cloud can be connected through Wi Fi, Bluetooth and other communication methods. As an on-board communication terminal, T-box is the interface between the vehicle end and the Internet
Automobile Ota is going through the stage from SOTA to FOTA, and EE structure is further centralized to provide implementation environment for OTA upgrading
The OTA upgrade has gone through four stages, from the initial OTA upgrade of T-box to the first OTA upgrade of Tesla Model s in 2012, and then to 2021, many auto enterprises have arranged OTAs. The OTA of new energy vehicles has gone through the stages from parts OTA to vehicle upgrade FOTA and enterprise Ota. In the future, the OTA industry will develop in the direction of coordination of the whole industry chain under stronger supervision. The centralized EE architecture provides a better implementation environment for OTA upgrade. The conventional process of Ota upgrade involves the cloud, CEM and vehicle end. OTA upgrade is initiated by the cloud and transmitted to vehicle end users through OEM. After being authorized by the user, the vehicle end downloads the upgrade package for installation, and finally feeds back the upgrade results in turn
The security of Ota upgrade is highly valued by the state. With the help of policies, industry norms and standards are expected to be issued one after another
With the rapid development of Shanxi Guoxin Energy Corporation Limited(600617) automobile industry, the demand and application of automobile OTA are gradually increasing, the upgrading object of Ota is gradually expanded from a single part to most automobile solid and software, and the core functional domain of automobile is gradually open to OTA upgrading technology. As OTA upgrading involves internal and external network connections and many ECUs, it is vulnerable to network attacks and seriously endangers vehicle safety. Therefore, relevant national institutions attach great importance to OTA safety. Relevant specifications and standards are issued to further strengthen OTA safety and compliance and eliminate serious potential safety hazards such as hacker intrusion and remote control
