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High-Speed, Low-Latency In-Vehicle Network Based on the Bus Topology for Autonomous Vehicles: Automotive Networking and Applications

High-speed and low-latency data transmission is a crucial requirement of in-vehicle networks (IVNs), primarily to support connected and autonomous vehicles (CAVs), which require many sensors, cameras, and critical/safety data transmissions. To improve network performance for next-generation IVNs and reduce the wire harnesses complexity, bus topology-based IVNs, e.g., 10BASE-T1S and the controller area network with extended length (CAN-XL), have been proposed. However, their performance is insufficient with respect to data rates and latency to support next-generation IVN requirements. In this article, we propose technical methods to improve the performance of bus topology-based IVNs for next-generation IVNs, providing high-speed and low-latency data transmission with wideband and high-order modulated signaling by employing equalizers and ultralow latency for critical data transmission via a preemption method within round-robin transmission.