CSR---EHS: Collaborative Research: QoS-Aware Data Services in Data-Intensive Real-Time Embedded Applications

Primary Investigators

Project Period: 9/1/2006 - 8/31/2009

This work is supported, in part, by National Science Foundation (Award numbers: 0614771 and 0614886).

Project Summary

Timely processing of real-time transactions using fresh temporal data, which reflect the current real world status, is essential in data-intensive real-time embedded applications such as traffic control, agile manufacturing, and defense applications. An overarching goal of this research is developing a novel theoretic framework and prototypical RTEDB (Real-Time Embedded Database) system that can support the desired transaction timeliness and data freshness even in the presence of data/resource contention and dynamic workloads. This project is developing effective Quality of Service (QoS) metrics, novel control theoretic models, feedback control, and feed-forward approaches to specify the desired QoS, model RTEDB dynamics, and support the desired QoS based on the mathematical model, while preventing severe data conflicts. The research is developing several new workload adjustment techniques including adaptive temporal data update, adaptive concurrency control, admission control, and service differentiation techniques to gracefully adapt and differentiate real-time data service with minimal impacts on the user perceived QoS. To improve the scalability of real-time data service, the research focuses on load balancing and temporal data replication in a control area. The research also is developing novel approaches for efficient, secure data transmission in real-time embedded applications. Moreover, the research team is committed to integrating this leading-edge research with teaching and outreach programs. The project, if successful, ultimately envisions that QoS-aware RTEDBs will be used in a number of important data-intensive real-time embedded applications. For more information, please read our ECRTS '08 and RTSS '07 papers.


Note: The papers below are available in the corresponding journals and coference/workshop proceedings and/or digital libraries. Some of them are available at PI Kang's and PI Son's web sites.

Books and Book Chapters


Conference/Workshop Papers


As part of this project, we are currently developing an open source real-time database testbed, called Chronos, to promote real-time data service research. It is expected to be publicly available in mid 2009. Please re-check the status in the future. Thanks for your interest!