2nd International ICST Conference on Performance Evaluation Methodologies and Tools

Research Article

Maximum Delay-Constrained Source Rate over a Wireless Channel

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  • @INPROCEEDINGS{10.4108/valuetools.2007.1965,
        author={Beatriz Soret and M. Carmen Aguayo-Torres and J. Tom\^{a}s Entrambasaguas},
        title={Maximum Delay-Constrained Source Rate over a Wireless Channel},
        proceedings={2nd International ICST Conference on Performance Evaluation Methodologies and Tools},
        proceedings_a={VALUETOOLS},
        year={2010},
        month={5},
        keywords={Effective bandwidth wireless systems Quality of Service delay},
        doi={10.4108/valuetools.2007.1965}
    }
    
  • Beatriz Soret
    M. Carmen Aguayo-Torres
    J. Tomás Entrambasaguas
    Year: 2010
    Maximum Delay-Constrained Source Rate over a Wireless Channel
    VALUETOOLS
    ICST
    DOI: 10.4108/valuetools.2007.1965
Beatriz Soret1,*, M. Carmen Aguayo-Torres1,*, J. Tomás Entrambasaguas1,*
  • 1: Department of Ingeniería de Comunicaciones University of Málaga Campus de Teatinos, E-29071 Málaga, Spain
*Contact email: bsoret@ic.uma.es, aguayo@ic.uma.es, jtem@ic.uma.es

Abstract

Providing Quality of Service (QoS) guarantees in the presence of delay-sensitive data streams demands the understanding of the delay's behavior. Moreover, the support of QoS over a wireless channel comes up against to the time-varying nature of the channel. In this work, we accommodate both issues and evaluate the maximum source rate such that certain delay bound Dt can be supported with a violation probability ε. We call this maximum source rate Capacity with Probabilistic Delay Constraint CDt,ε. The effective bandwidth theory is a framework widely used to analyze wired networks and constitutes the basis of the work with the necessary adaption for its use in a wireless system. The time-correlated nature of the wireless channel has been modeled with a Finite State Markov Chain (FSMC). As expected, the maximum CDt,ε. increases for long allowed delays (Dt ← ∞) and diminishes when the delay constraint is more strict. The expected delay violation probability is compared to simulations in order to validate our results.