Specification and modeling of QoS based on AADL

Specifying and modeling Quality of Service (QoS) properties represents a key challenge for cyber physical system development. Quality of Service (QoS) is a general term that specifies system quality and performance, as opposed to system functionality of cyber physical systems. QoS specification is concerned with capturing application level QoS requirements and management policies of cyber physical systems. Architecture Analysis and Design Language (AADL) is a textual and graphic language used to design and analyze the software and hardware architectures of embedded and realtime systems for performance-critical characteristics (e.g., end-to-end latency, schedulability, and reliability), AADL supports the representation of end-to-end flows through the concept of a flow specification This paper proposes an approach to specify and model QoS based on AADL. We present our current effort to apply and extend AADL to specify and model QoS of cyber physical systems, finally, we illustrate QoS specifying and modeling via an example of specifying and modeling Vehicular Ad-hoc NETwork (VANET).