Communication Stack Layering (OSI Layer Stack)

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Principles

• Elements on application level
  – Definition of unique elements
  – Having adequate attributes

• Operations handle the elements
  – GetRequest – GetResponse
  – SetRequest – SetResponse
  – Direction: communication server (CS) to mobile unit (MU) and vice-versa
• Definition with abstract interface notation
  – Common understanding
  – Exact rules regarding the coding and decoding of the elements
  – Generate the code automatically out of the specification
  – Fast time to market
  – High flexibility
• The content (elements, operations) is independent from the transport

Reference

• Next Generation Telematics Protocol (NGTP)
  – Similar needs in other application field (automotive)
  o Emergency Call
  o Crash data 
  o Service logistics 
  o Location based services
  – Similar architecture MU – CS – AS, IP Technology
  – Uses ASN.1 for interface definition
  – Companies: BMW, Connexis and WirelessCar