In contrast to autonomous driving on the highway, in complex environments such as in the city, significantly more objects must be detected. Current estimates expect up to 400 objects, which must be registered simultaneously. However, there is no upper limit, and in some situations this number may be higher. That makes it very difficult to estimate the processing power, because it correlates strongly with the environmental situation. It is certain, however, that existing high-performance platforms for autonomous driving are not able to supply the necessary processing power.

A new system architecture approach is required, and various options are available. Those range from complex systems-on-chip (SoCs) to new approaches from the packaging area, such as chiplets.

Chiplets allow various circuits to be mounted on a package substrate, as with a system-on-package (SiP). Unlike SiP, however, with chiplets the interface between the circuits is also specified and standardized. This allows prefabricated circuits to be assembled into new types of systems more or less arbitrarily, from the perspective of the application.
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