Motorola, in partnership with telecommunications carriers and vehicle manufacturers, has been an active participant in the development of telematics systems such as OnStar, Integrated Mayday, TeleAid and Rescue, and in the development of wireless protocols such as MEMS and ACP. However, with an increase in the technical capability of vehicle-based processors, communications networks, and display devices, there is an opportunity to progress from these older proprietary systems to open evolving systems and standards. This progression would then contribute to ensuring sustained market growth, building upon the increasing market acceptance and visibility for telematics products. This paper summarises the research and development undertaken by the Telematics Communications Group of Motorola in the area of telematics systems and standards. The paper compares and contrasts a number of existing standards (ACP, MEMS, WAP-T and GATS) in terms of their capability to support a suite of services, and their evolution toward an open standard. In addition, the paper discusses the development of a simulation and prototype framework to allow an investigation of the various protocol options and provide performance comparisons. The paper then concludes with a series of recommendations for further research and development. (A)
Abstract