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Vehicle network architectures are migrating toward the use of multiple vehicle networks. Cost, application differences, lessons learned, and industry experiences have pushed aside the original philosophy of using the single vehicle-wide network that was attached to J1850. This paper discusses the current state of vehicle network architectures, the rationale behind the use of multiple vehicle networks, and discusses the current business and technical issues.

Because of the large software and networking architecture contained within the overall organization of OSEK, most beginners will find learning OSEK to be rather difficult. Additionally, if one starts with little or no experience in developing a distributed embedded system using small area network technology, the learning curve will be even longer. This technical paper aims at introducing the essential concepts behind one of OSEK's three major components - the OSEK Communication. The primary focus is to help the beginner understand the basic technical features of OSEK COM.