In-Vehicle Real-Time Fog Computing
Hermann Kopetz, Stephan Poledna · 2016
Considering the technical advances and economicadvantages of integrated architectures and cloud computing we conjecture that the realization of a real-time cloud, called a fog that provides reliable electronic services with temporalguarantees on board a vehicle efficiently and flexibly will be thelogical next step in the development of an automotive electronic architecture. In this paper we introduce the concept of a time-triggered virtual machine (TTVM) that provides a precisely specified virtual interface between a real-time software component and its underlying hardware infrastructure. The flexible allocation of TTVMs on different node computers provides the means to implement fault-tolerance, evolution and on-line validation effectively in such a time-triggered distributed architecture. In this paper this new architecture and the associated design methodology are explained by referring to an example of a driver assistance system onboard a car.