Mercedes-Benz Adopts MOST: Media Oriented Systems Transport


SMSC, has announced that the Media Oriented Systems Transport (MOST(R)) networking technology, the accepted standard for high bandwidth infotainment networking in the car, has been selected as the backbone of the infotainment system for Daimler’s new Mercedes-Benz M-Class model. Its proliferation, which started with the previous M-Class, is now entering the second round.

Daimler offers an entire set of infotainment components for the new M-Class. Dominating the centre of the instrument panel is the large color screen which is used for infotainment, navigation and communication. MOST technology is used for connecting a broad range of infotainment devices in this premium SUV.

“We are pleased to continue to be selected by Daimler as the in-vehicle networking system of choice for this prestigious Mercedes-Benz model,” stated Dr. Christian Thiel, Vice President and General Manager of SMSC’s Automotive Information Systems group. “Approximately 108 cars worldwide have been equipped with MOST technology so far. Daimler has relied on MOST technology since 2002 due to its performance, high quality and robustness.”

MOST multimedia networking technology enables the networking of feature-rich infotainment systems in automobiles by providing the means to distribute multimedia entertainment functions among the various control devices around the car. For example, a CD- or DVD changer, radio, GPS-navigation, mobile telephone and digital media-interfaces can supply signals to this efficient ring network. The signals are sent digitally and static-free to the amplifier and monitors.

Cars continue to evolve into sophisticated consumer electronics platforms, increasing the demand for reliable and simple solutions to support for audio, video and data communications. MOST can be used to connect multiple consumer devices via optical or electrical physical layers directly to one another or in a network configuration. As a synchronous network, MOST provides excellent Quality of Service and seamless connectivity for audio/video streaming.

MOST defines protocol, hardware, and software layers necessary to allow for transport of control, real-time, and packet data in an efficient and low cost way using a single medium (physical layer). Media currently in use are fiber optics and unshielded twisted pair cables (UTP). MOST also supports various speed grades up to 150 Mbps.
MOST technology:
Uses a single interconnection to transport audio, video, data and control information
Supports different physical layers (fiber-optic, shielded or unshielded twisted pair wires)
Supports 25, 50 and 150 Mbps
Provides the connectivity backbone to network a variety of multimedia interfaces



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