Automobile manufacturers are vying to outdo each other by introducing new functions and systems, from adaptive cruise control and adaptive braking assistants to the electronic horizon and lane departure warning systems. The more systems included in a vehicle network, the more complex the communication between the electronic control units (ECUs) becomes.
Current bus systems for in-vehicle networks have reached their capacity limits and new solutions are needed. Ethernet offers the required high bandwidth to support the increasing data transfer needs of future networks in cars. It delivers transmission rates that are at least 100 times higher than CAN.
EB Automotive has comprehensive know-how and experience with many automotive communication technologies. When you work with EB, you benefit from:
- EB’s mature automotive IP/Ethernet basic software solutions that are embedded in the AUTOSAR-based EB tresos AutoCore product family
- Mass-production-approved network communication solutions for CAN, LIN, and FlexRay
- EB’s close cooperation with carmakers on specifications and implementations as they introduce innovative new methods such as service-based communication and time-sensitive networks
- EB’s high quality level for implementations, ensured by conformance tests performed in cooperation with one of the leading IP/Ethernet testing companies
Elektrobit offers in-car network software solutions for all use cases from CAN and LIN to FlexRay and Ethernet. All individual software solutions are integrated into the communication stack of EB tresos AutoCore, which encompasses the AUTOSAR communication services for vehicle network communication. These services provide a uniform interface to the vehicle network—independent of the communication protocol used—and are required in every AUTOSAR communication stack.
Communication paradigms: Signal- and service-based
Current automotive networks follow a signal-based communication paradigm. This method of communication typically involves the transmission of short messages with individual, densely packed values (signals). They are broadcast to all network nodes and forwarded to interested applications via efficient filters.
Ethernet’s high bandwidth enables the use of service-based communication, for the first time. This provides a scalable method to handle the increasing complexity of signals exchanged within the car. In contrast to the well-proven signal-based method, service-based communication necessitates a completely different method of data exchange. Although there are many associated challenges with such a fundamental change, Elektrobit supports the automotive manufacturers who are introducing this new and pioneering automotive communication method.
In order to meet current and future carmaker requirements, Elektrobit ensures maximum flexibility by delivering solutions for both Ethernet communication methods: signal- and service-based.
Time-sensitive control data exchange
Extending IP/Ethernet with time-sensitive networking will enable new automotive applications that not only require a higher bandwidth, but also guarantee worst-case latencies and global time-base synchronization between the ECUs. Elektrobit is currently supporting efforts by General Motors to integrate such cutting-edge technology into its next generation of cars.
Automotive IP/Ethernet-based devices and systems introduce new challenges for testing and verification. Comprehensive testing of these devices and systems requires test methodologies that use both automotive domain expertise and best practices from 20+ years of experience in the IT and telecom domains. So, in order to ensure we deliver state-of-the-art car network solutions to our customers, Elektrobit cooperates with Ixia, the leading company for efficient ECU and network infrastructure testing.
Integration with other EB tresos products and technologies
EB’s basic software stack comprises our CAN, LIN, FlexRay, and Ethernet solutions.