A High-Performance Local Area Network for Cars

H. Richter and M. Wille (Germany)


Computer Communication, Car Communication,mechatronics, Communication Protocols, ring-basedlocal-area network


Local area networks in cars are commonly based on linear topologies. This paper introduces Carring, a ring based network to connect controller units with each other and with sensors and actuators. Applications of Carring are e.g. mechatronic systems in cars. For Carring, a bandwidth allocation protocol is introduced that is based on synchronous time slots. An extension algorithm allows to reallocate unused time slots to requesting senders, thus achieving maximum bandwidth utilization of the ring. Furthermore, an upper time limit can be guaranteed for the delivery of data frames providing real time capability.

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