Setting the parameters right for two-hop IEEE 802.11e ad hoc networks

Anne Katharina Ingrid Remke, Boudewijn R.H.M. Haverkort, Geert Heijenk, Jesper Bax

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    Abstract

    Two-hop ad-hoc networks, in which some nodes forward traffic for multiple sources, with which they also compete for channel access suffer from large queues building up in bottleneck nodes. This problem can often be alleviated by using IEEE 802.11e to give preferential treatment to bottleneck nodes. Previous results have shown that differentiation parameters can be used to allocate capacity in a more efficient way in the two-hop scenario. However, the overall throughput of the bottleneck may differ considerably, depending on the differentiation method used. By applying a very fast and accurate analysis method, based on steady-state analysis of an QBD-type infinite Markov chain, we find the maximum throughput that is possible per differentiation parameter. All possible parameter settings are explored with respect to the maximum throughput conditioned on a maximum buffer occupancy. This design space exploration cannot be done with network simulators like NS2 or Opnet, as each simulation run simply takes to long. The results, which have been validated by detailed simulations, show that by differentiating TXOP it is possible to achieve a throughput that is about 50% larger than when differentiating AIFS and CW_min.
    Original languageUndefined
    Title of host publication15th International GI/ITG Conference on Measurement, Modelling and Evaluation of Computing Systems
    EditorsBruno Müller-Clostermann, Klaus Echtle, Erwin P. Rathgeb
    Place of PublicationLondon
    PublisherSpringer
    Pages168-182
    Number of pages15
    ISBN (Print)978-3-642-12103-6
    DOIs
    Publication statusPublished - Mar 2010
    Event15th International GI/ITG Conference on Measurement, Modelling and Evaluation of Computing Systems - Essen, Germany
    Duration: 15 Mar 201017 Mar 2010
    Conference number: 15th

    Publication series

    NameLecture Notes in Computer Science
    PublisherSpringer Verlag
    Volume5987

    Conference

    Conference15th International GI/ITG Conference on Measurement, Modelling and Evaluation of Computing Systems
    Abbreviated titleMMB&DFT 2010
    CountryGermany
    CityEssen
    Period15/03/1017/03/10

    Keywords

    • EWI-16467
    • METIS-270695
    • IR-72834

    Cite this

    Remke, A. K. I., Haverkort, B. R. H. M., Heijenk, G., & Bax, J. (2010). Setting the parameters right for two-hop IEEE 802.11e ad hoc networks. In B. Müller-Clostermann, K. Echtle, & E. P. Rathgeb (Eds.), 15th International GI/ITG Conference on Measurement, Modelling and Evaluation of Computing Systems (pp. 168-182). (Lecture Notes in Computer Science; Vol. 5987). London: Springer. https://doi.org/10.1007/978-3-642-12104-3_14