The MOST150 infotainment bus system is about to take the place of earlier MOST systems. With its high bandwidth which can be utilized up to nearly 100%, MOST150 is a viable platform for advanced next-gen infotainment systems.
The MOST bus is the de-facto standard for connecting infotainment systems in high-end vehicles. In Daimler vehicles, MOST25 with a speed grade of 25 Mbit/s has now been used for ten years. However, with the bandwidth of MOST25 almost fully occupied in current systems and with new system requirements for the next generation of infotainment systems, it was necessary to switch to a network with more bandwidth. Therefore, Daimler has decided to build its next generation of infotainment systems based on MOST150.
The bandwidth provided by MOST150 enables us to realize new features, such as access to Internet services, as well as increased requirements for connectivity to consumer devices. In addition, we have begun to stream video over MOST150, replacing separate dedicated video links. With the bandwidth provided by MOST150, it is possible to create a system where the available audio and video sources can be accessed independently from different seats.
In this article we will describe our experiences with the networking and architectural aspects of the on-going development process. We will sketch requirements and the system architecture of Daimler's infotainment in the next section. The focus of this feature will be on the new features of MOST150 and the MOST Specification 3.0 and how they have been employed in the design of the system. Specifically, we will discuss the audio and video architecture required for a multi-seat system and the use of the new MOST Ethernet channel. Finally, we will describe our plans for further evolution of the system.
The decision for MOST150 has enabled us to realize the new features of the next generation of infotainment systems while re-using the proven mechanism and application interfaces from current systems. The bandwidth of MOST150 is sufficient to create a multi-seat system, where it is possible to access every audio or video source from every seat.
For the complete article, which describes Daimler's launch of the MOST150 bus, system requirements, and multi-seat infotainment architecture, click here, courtesy of Automotive Designline Europe.