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International Journal of Automotive Technology > Volume 15(6); 2014 > Article
International Journal of Automotive Technology 2014;15(6): 953-959.
NODE-BASED SCHEDULING METHOD FOR EASY MIGRATION FROM CAN TO FLEXRAY IN IN-VEHICLE NETWORKING SYSTEMS
M. H. KIM1, S. LEE2, K. C. LEE3
1PNUNSL
2Pusan National University
3Pukyong National University
ABSTRACT
As vehicles become more intelligent, in-vehicle networking (IVN) systems such as controller area network (CAN) are essential for the convenience and safety of drivers. To expand the applicability of IVN systems, attention is currently being focused on chassis networking systems that require increased network capacity and real-time capabilities. FlexRay was developed to replace CAN protocol in chassis networking systems, to remedy the shortage of transmission capacity and unsatisfactory real-time transmission delay of conventional CAN. However, FlexRay network systems require a complex scheduling method, which is a barrier to their implementation as chassis networking systems. In particular, if we want to migrate from a CAN network to a FlexRay network using the well-defined CAN message database, which has been specifically constructed for chassis networking systems by automotive vendors, a new type of scheduling method is necessary to reduce scheduling efforts during the software development process. This paper presents a node-based scheduling method for easy migration from a CAN network to a FlexRay network system. To demonstrate the feasibility of the technique, its performance is evaluated in terms of various software complexity indices.
Key Words: In-vehicle networking system, Node-based scheduling, Scheduling complexity, Software complexity index
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