Reactive, Multi-Layer Simulation Technologies

This study develops a detailed architecture of the umbrella System of Systems (SoS) tool. The tool preserves cross layer signaling and layer state machine transition regardless of whether the layer is abstracted or detailed. The proposed study will perform tasks including: o Investigating the interaction between the specialized tools and the umbrella tool o Evaluating cross layer signaling that needs to be preserved o Defining the state-machines for each layer o Validating the cross layer signaling preservation and layer abstraction accuracy o Defining the metrics for each layer and the end-to-end metrics. Concurrent and parallel simulation concepts will be studied through the frame work defined above. Evaluation of rare event simulation concepts and how they fit with cross layer signaling approach will also be investigated in the Phase I. The results of the study will be a tool that can answer what-if questions concerning communications networks in a fast and reliable matter. VoIP applications, which are known to sometimes give poor performance over tactical networks, will benefit from building the proposed capabilities. The proposed tool will provide the ways to improve the performance of such applications with low cost.