Is there a future for the MOST bus?: Page 2 of 2

October 01, 2014 //By Christoph Hammerschmidt
Is there a future for the MOST bus?
In no other domain in the car, the technological evolution is advancing more rapidly than in the infotainment sector. Nevertheless, the MOST data networking technology seems to maintain its position as the king of the infotainment networking hill - though its latest iteration, MOST150 has been introduced already seven years ago. But for how long?

eeNews Europe: Where is the "sweet spot" for future MOST applications?

Seidl: The sweet spot will not change much from what we already have implemented. MOST is extremely well suited for audio streaming and distributing audio data across the vehicle. In addition, we use it to interconnect the Head Unit with the Rear Seat Unit e.g. in our Mercedes S-Class with multi seat entertainment.

eeNews Europe: Are MOST and Ethernet head-on competitors in the automotive environment? Are there applications in which MOST beats Ethernet? Are there technologies in sight that could be regarded as an alternative to both?

Seidl: In terms of use cases, MOST and Ethernet are indeed competing head-on. If we manage to reduce the cost (for MOST), they also can compete in terms of pricing. But there are certain significant differences. Ethernet is an asynchronous technology, ideal for IP data transport. MOST, in contrast, is capable of handling real-time, synchronous data transport, for applications like time-critical data streaming. But you should not forget that MOST also has the capability to handle Ethernet data; it offers a valid virtual Ethernet channel for a data bandwidth up to 100 Mbps.

However, adopting the existing Ethernet software ecosystem in the automotive environment is challenging - in particular when it comes to avoiding latencies.

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