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Two candidates for next generation automotive infotainment networks: MOST and AVB

Author:Dr. Walter Franz, Prof. Dr. Wolfgang Rosenstiel Date:2014/2/28 17:05:12
MOST150 is the prevalent networking technology for the coming years in automotive infotainment. Although MOST150 is only at the beginning of mass deployment, pre-development of the next generation has already started. With IEEE802.1 AVB, another concept has entered the discussion about the successor to MOST150. AVB needs to be considered, appropriately evaluated and compared with current and evolving MOST concepts.

The MOST Technology framework is the dominant technology in automotive telematics and infotainment networks, and has been smoothly brought to the road in its third generation with MOST150 in 2012. The MOST Cooperation has proven to be an excellent body, permitting very direct specification and implementation processes for the benefit of both OEMs and suppliers. The close and open cooperation of OEMs and suppliers is the key factor of this success story. MOST150 systems will continue to boom in car models as the dominant infotainment network system until at least 2020.

A succeeding “Next Generation” network system for the time after MOST150 needs to meet high expectations, considering the dramatic increases in bandwidth demands driven by camera, display link and consumer electronics (CE) device based use cases. Flexible topology options and the seamless interconnection of previously separated car domains are further key topics. Aside from that, general requirements apply, such as cost, scalability, future-proof design, efficient supply chains, automotive maturity, tools ecosystem and IT security.

With IEEE802.1 Audio-/Video-Bridging standards [1-5], packet-based synchronized streaming has become a competitive alternative in media streaming applications. Ethernet Network Interfaces supporting AVB have just been launched in consumer products [6] and AVB will conceivably become a common feature in CE devices which commonly use IEEE802.3 Ethernet and IEEE802.11 WiFi LAN technologies.

Here, another trend has to be taken into account, as Ethernet is also currently evaluated in the automotive industry as a future technology option in automotive domains adjacent to the telematics domain.

Due to these facts and driven by new use cases, cross-domain interoperability is rapidly gaining importance and the applicability of AVB concepts and their interoperability with MOST need to be evaluated.
For more information, please visit: 
http://edn.com/design/automotive/4419501/1/MOST-and-AVB--Two-candidates-for-next-gen-automotive-infotainment-networks

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