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Adam K / Piotr: AUTOSAR - Signal2Service is not really implemented yet.
- Some VSS to AUTOSAR tooling seems to make sense therefore
- Tieto want to start working on this. First steps is getting runtime platform setup working. Then the design of VSS↔AUTOSAR can start (and be discussed).
Quick look at CVII Tech Stack technologies - Protobuf again.
Need for full software architecture focus in this project.
- Separation of safety-critical technologies and info/entertainment/other. What is being targeted exactly?
- Where in a typical architecture are we working?
- VSS itself is orthogonal to safety/other question. However, the chosen technologies and implementations may need to be classified from safety perspective.
- Clarify where different proposals belong. E.g. "MQTT is unlikely in safety domain, right?"
- Agreement on which technology to use where.
Images to show architecture.
Big software release announcement next week...
Virtualization important aspect to consider.
- Gunnar informed about Automotive Virtual Platform Specification work ongoing in GENIVI.
- Let's discuss in the future if there are particular aspects to consider in this area.

AUTOSAR - Tieto/EVRY still interested but other priorities came up so the time plan not clear at this point.
Signal2Service - check if spec released and if applicable
Look at defining the representation of data in AUTOSAR-XML (to prepare VSS to ARXML conversion)
- FARACON tool would be one approach. Create a Franca IDL file with some observable data ("Attributes" in FIDL) and run the conversion, study the result. There is a comprehensive mapping between Franca ↔ ARXML that should be correct.
MQTT
- VISS over MQTT (Ulf) has been described in W3C Automotive working group.
  - It is embedding VISS in MQTT with a small control protocol defined (over MQTT).
  - Access control strategy is identical to standard VISS.
    - Topic needs to be "protected" somehow or anyone could listen/inject to traffic.
  - Give some time to let this idea mature before it becomes part of any official specifications. New ideas and improvements may come up.
- A more direct VSS-to-MQTT topic mapping is a different and complementary alternative
- Sebastian: Publishing to MQTT is easy. For writing more work required (because access control details not done yet).
  - Steps: Define the payload message format
  - Steps: Describe the access control strategy (clients have access to a subset of topics)
  - Steps: Deciding implementation language and reuse libraries
Protobuf – think about how to represent messages - this page

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