Quality of Service in Heterogeneous Networks. 6th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2009 and 3rd International Workshop on Advanced Architectures and Algorithms for Internet Delivery and Applications, AAA-IDEA 2009, Las Palmas, Gran Canaria, November 23-25, 2009 Proceedings

Research Article

iDSRT: Integrated Dynamic Soft Real-Time Architecture for Critical Infrastructure Data Delivery over WLAN

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  • @INPROCEEDINGS{10.1007/978-3-642-10625-5_12,
        author={Hoang Nguyen and Raoul Rivas and Klara Nahrstedt},
        title={iDSRT: Integrated Dynamic Soft Real-Time Architecture for Critical Infrastructure Data Delivery over WLAN},
        proceedings={Quality of Service in Heterogeneous Networks. 6th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2009 and 3rd International Workshop on Advanced Architectures and Algorithms for Internet Delivery and Applications, AAA-IDEA 2009, Las Palmas, Gran Canaria, November 23-25, 2009 Proceedings},
        proceedings_a={QSHINE},
        year={2012},
        month={10},
        keywords={Multi-resource scheduling Quality-of-service WLAN},
        doi={10.1007/978-3-642-10625-5_12}
    }
    
  • Hoang Nguyen
    Raoul Rivas
    Klara Nahrstedt
    Year: 2012
    iDSRT: Integrated Dynamic Soft Real-Time Architecture for Critical Infrastructure Data Delivery over WLAN
    QSHINE
    Springer
    DOI: 10.1007/978-3-642-10625-5_12
Hoang Nguyen1,*, Raoul Rivas1,*, Klara Nahrstedt1,*
  • 1: University of Illinois at Urbana-Champaign
*Contact email: hnguyen5@illinois.edu, trivas@illinois.edu, klara@illinois.edu

Abstract

The real-time control data delivery system of the Critical Infrastructure (i.e. SCADA - Supervisory Control and Data Acquisition system) is important because appropriate decisions cannot be made without having data delivered in a timely manner. Because these applications use multiple heterogeneous resources such as CPU, network bandwidth and storage, they call for an integrated and coordinated real-time scheduling across multiple resources to meet end-to-end deadlines. We present a design and implementation of - an integrated dynamic soft real-time system to provide fine-grained end-to-end delay guarantees over WLAN. takes the deadline partitioning approach: end-to-end deadlines are partitioned into multiple sub-deadlines for CPU scheduling and network scheduling. It integrates three important schedulers: , and to achieve global coordination. We validate in Linux and evaluate it in an experimental SCADA test-bed. The results are promising and show that can successfully achieve soft real-time guarantees in SCADA system with very low packet loss rate compared to available commodity best-effort systems.