New Asymmetric Data Transmission Method for InVehicle Network Recently, as the demand for technology related to autonomous vehicles increases, various standards have been established in order to meet these requirements. Among them, IEEE 802.3ch is establishing a PHY layer standard to support InVehicle Networku0027s gigabit Ethernet. Among the standardization issues of IEEE 802.3ch, there is an asymmetric data transfer issue. This is an issue to discuss how to cope when the differences in data transmission rates are different between up and down directions. In this paper, we propose a link speed switching method using autonegotiation as a way to provide solutions to these issues. This has the advantage of preventing data loss when switching the link speed. There is also a cost advantage because there is no need for new development.

Design of a FlexRayEthernet Gateway and Security Mechanism for InVehicle Networks Due to the development of the Internet of Vehicles (IoV) and advanced driverassistance systems (ADAS), the Ethernet has become one of the most important communication protocols for the future of automotive networks. This is because the existing communication protocols (such as FlexRay) do not provide sufficiently high bandwidth requirements. The main challenge for the automotive industry will be to transfer and extend standard IP and Ethernet into vehicles and still fulfill the automotive requirements. The automotive gateway not only links two or more protocols and exchanges the data using each, but also monitors and ensures functional safety. This paper proposes a FlexRayEthernet gateway by considering the development conditions of embedded systems and the security in the field of vehicle networking. The proposed method is implemented on the Field Programmable Gate Array (FPGA) system to evaluate running time and to analyze the overhead of the security mechanism. For onetoone mapping logic, the execution times of FlexRay to the Ethernet path and Ethernet to FlexRay path are constant, at 4.67 xcexbcs and 6.71 xcexbcs, respectively. In particular, cybersecurity can be integrated as an extension of the gateway with low latency and power consumption.