List of problems
Recovery actually is part of OTA. For real computing ability and storage usage of embedded ECU of intelligent cars, recovery is the inevitable way to update firmware.
Whether the bus wire will change into Ethernet or FLEXRAY from CAN/LIN because of OTA data amount issure?
As for the transmission of update package among intelligent devices, high speed bus wire, such as Ethernet and FLEXRAY, is the best choice. Meanwhile, beside the transmitting capacity, the TCP of software also need to be well defined.
As one mature technology in consumer electronic field, what is the challenge of OTA implementation into car market?
For this question, we need to explain from two points of view. For vehicle side, the framework and performance of all car devices are diverse from each other. So, we need to design and customize OTA according to the real framework and bus wire of each devices. And now lots of carmakers intend to realize whole vehicle update or update most of ECUs. To realize this, the investment will be more larger and the test period will be longer in the future. While for cloud side, every carmaker has his own information management system and they are different from each other, which means that in the future the customization work in communication and application will be more.
Is the OTA recovery started by TBOX or gateway? If it is gateway, then how the protocols definition between TBOX and gateway?
We came cross both conditions in our projects and it is decided by the framework of whole vehicle. If the vehicle we applied our OTA into is a mature model or a mature platform or a specific model using passthrough gateway, the OTA recovery will be started by TBOX. If it is a new model and used some optimized gateway targeted in OTA recovery, it will be started by gateway. Currently, we’ve already got the strategic cooperation with main intelligent gateway makers. As for the protocols between TBOX and gateway, we will provide standard and the protocols can also be customized according carmakers’ real demand in the future.
This is decided by carmakers. Carmakers will implement OTA nodal points in different stages. For now, mostly OTA nodal points are some intelligent devices and some non-critical components ECUs such as OBU, TBOX, air condition, PEPS. While in the future, carmakers are planning the remote control ability of some critical component ECUs, such as PP, chassis and so on.