A Model-Based Approach to Designing QoS Adaptive Applications

Authors:
Jianming Ye;Joseph Loyall;Richard Shapiro;Richard Schantz;Sandeep Neema;Sherif Abdelwahed;Nagabhushan Mahadevan;Michael Koets;Denise Varner
Affiliations:
BBN Technologies;BBN Technologies;BBN Technologies;BBN Technologies;Vanderbilt University;Vanderbilt University;Vanderbilt University;Southwest Research Institute;Southwest Research Institute
Venue:
RTSS '04 Proceedings of the 25th IEEE International Real-Time Systems Symposium
Year:
2004

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Abstract

In this paper we present a model-based approach for designing Quality of Service adaptive applications. We have developed a prototype Distributed QoS Modeling Environment (DQME) that captures important elements of dynamic QoS adaptation at the model level. This modeling environment is designed independent of; and can be integrated with, specific application domains to capture their QoS features and adaptation strategies. It combines the domain-specific modeling capability of the Generic Modeling Environment with the QoS adaptation mechanisms of the Quality Objects middleware framework. DQME captures both the QoS and the functional concerns of distributed real-time embedded systems, and provides clear separation of these two. Integrated code-synthesis tools facilitate code generation and model refinement. Wepresent a signal analyzer case study to demonstrate the use of the DQME modeling tool in real world applications.