QoS-UniFrame: A Petri Net-Based Modeling Approach to Assure QoS Requirements of Distributed Real-Time and Embedded Systems
Shih-Hsi Alex Liu, Barrett R. Bryant, Jeff Gray, R.R. Raje, Andrew M. Olson, Mikhail Auguston · 2005
Assuring quality of service (QoS) requirements is critical when assembling a distributed real-time and embedded (DRE) system from a repository of existing components. This paper presents a two-level approach for assuring satisfaction of QoS requirements in the context of a reduced design space for DRE systems. A dynamic and parallel approach is introduced to prune off the infeasible design spaces at the first level. Evolutionary algorithms cooperating with a domain-specific scripting language then discard less probable design spaces using statistics. These techniques fulfill the collective objectives of pruning and assuring the design space at system assembly time.