DSM: Data Sharing Management system for in-vehicle communication

The automotive industry is going through a tremendous evolution of its Electrical/Electronic architectures, based on heterogeneous computing units on the same centralized fail-safe hardware. To access the different sensors/actuators dispatched all over the vehicle, these architectures use various communication protocols, each offering a certain degree of determinism and real-time guarantees. However, when multiple data streams pass through these protocols to reach the interoperable computing units, it becomes hard to maintain a consistent data set in the distributed processing environment. To ensure these end-to-end guarantees, we define a Data Sharing Management (DSM) system that acts as a multi-protocol gateway between different components of the processing environment. Evaluation results of the FPGA-based implementation show that the additional latency induced by this DSM is less than 2% (4,276us) of the end-to-end Ethernet latency and less than 6% (370ns) of the end-to-end PCIe latency.