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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.

Keywords
Effective bandwidth wireless systems Quality of Service delay
Published
2010-05-16
Modified
2011-09-14
http://dx.doi.org/10.4108/valuetools.2007.1965
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