New generation electrified and self-driving vehicles require much higher performance and flexibility for onboard digital communications than Controller Area Networks may offer. For this reason, automotive Ethernet is often regarded as the next de facto standard technology in these contexts, and by extension for networked embedded systems as well. However, an abrupt and drastic move from CAN to Ethernet is likely to cause further cost increases, which can be hardly tolerated by buyers. This paper analyzes the third generation of CAN, termed CAN XL, and studies how interoperability can be ensured with Ethernet. Likely, composite CAN XL-Ethernet networks are the key for getting the best of both worlds, not only in the automotive domain but also for sensing and control in scenarios like building automation, wired sensor networks, and low-cost networked embedded systems with real-time constraints.

翻译：新一代电气化与自动驾驶汽车对车载数字通信的性能与灵活性要求远超控制器局域网（CAN）所能提供的水平。因此，车载以太网常被视为这些场景中下一代事实标准技术，并由此延伸至网络化嵌入式系统领域。然而，从CAN仓促过渡到以太网可能导致成本进一步上升，这难以被消费者所接受。本文分析了第三代CAN协议——CAN XL，并探讨了如何确保其与以太网的互操作性。研究表明，复合型CAN XL-以太网网络是兼顾两者优势的关键，不仅适用于汽车领域，还可应用于楼宇自动化、有线传感器网络及具有实时约束的低成本网络化嵌入式系统等场景的传感与控制。