Modern vehicles feature numerous electronic subsystems and various bus systems. CAN gateways connect these networks, control the data flow, and enable targeted message processing. In this way, they create a flexible interface between different systems while also helping to secure vehicle communication.
Targeted Connection of Different Networks
Vehicles use various bus systems and protocols such as CAN, CAN FD, LIN, J1939, CANopen, and UDS. Gateways enable communication between these systems and can not only forward messages but also filter, route, or modify them as needed.
For example, individual messages can be transmitted between different CAN buses without overloading other networks. The segmentation of vehicle networks and the adjustment of different baud rates are also possible. As range extenders, gateways can also help improve signal quality in cases of long cable runs and high data rates.
Focus on Cybersecurity
As connectivity increases, so does the importance of cybersecurity. Gateways can be used as active firewalls in this context. Filters and defined rules can be used to control which messages are allowed to pass through a network. Especially at potentially vulnerable interfaces such as diagnostics, OBD, or telematics, they can help prevent unauthorized access and tampered messages.
MRS Electronic also takes a retrofit approach: With the MicroPlex Gateway, existing vehicle architectures can be enhanced with firewall, monitoring, and filtering functions without having to fundamentally replace proven control units. A real-world project with a leading commercial vehicle OEM demonstrates how this can be used to segment existing CAN structures and secure safety-critical interfaces.
Future-Proof Vehicle Architectures
Compact CAN gateways thus combine connectivity, flexible data processing, and cybersecurity in a single solution. They can secure existing vehicle platforms while simultaneously supporting the evolution toward the software-defined vehicle.
You can learn more about the technical capabilities and specific applications in the latest technical article by MRS Electronic in ATZelektronik 09-10/2026.
www.springerprofessional.de/compact-can-gateways-for-secure-e-e-architectures/53672568
