Based on the given requirements, including timing requirements, that originate from the higher level of abstraction respectively previous phase, a solution is created or an already existing solution is revised. While creating/revising the solution the given timing requirements must be considered, in other words the given timing requirements, like any other non-timing requirement, guide the creation of the solution. The resulting solution is captured in appropriate models. In case of EAST-ADL these models are the Technical Feature Model TFM on the Vehicle Level, Functional Analysis Architecture FAA on the Analysis Level, Functional Design Architecture FDA and Hardware Design Architecture HDA on the Design Level, and Environment Model EM which is present on all levels of abstraction. Out of these, the first three models primarily capture timing requirements and properties related to the system’s application. The Hardware Design Architecture provides parameters for execution and hardware delays. The Environment Model provides characteristics and constraints imposed by the surrounding systems.
Several solutions (alternatives) can evolve from the task “Create Solution” and each of those solutions shall have the potential to satisfy the given requirements. However, each solution may result from specific design decisions that have been taken during the course of this task.
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