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      • Dept. of Electrical and Electronics Engineering - Master's degree
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      •   BUIR Home
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      • Bilkent Theses
      • Theses - Department of Electrical and Electronics Engineering
      • Dept. of Electrical and Electronics Engineering - Master's degree
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      Dynamic threshold-based algorithms for communication networks

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      Author(s)
      Toksöz, Mehmet Altan
      Advisor
      Akar, Nail
      Date
      2009
      Publisher
      Bilkent University
      Language
      English
      Type
      Thesis
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      Abstract
      A need to use dynamic thresholds arises in various communication networking scenarios under varying traffic conditions. In this thesis, we propose novel dynamic threshold-based algorithms for two different networking problems, namely the problem of burst assembly in Optical Burst Switching (OBS) networks and of bandwidth reservation in connection-oriented networks. Regarding the first problem, we present dynamic threshold-based burst assembly algorithms that attempt to minimize the average burst assembly delay due to burstification process while taking the burst rate constraints into consideration. Using synthetic and real traffic traces, we show that the proposed algorithms perform significantly better than the conventional timer-based schemes. In the second problem, we propose a model-free adaptive hysteresis algorithm for dynamic bandwidth reservation in a connection-oriented network subject to update frequency constraints. The simulation results in various traffic scenarios show that the proposed technique considerably outperforms the existing schemes without requiring any prior traffic information.
      Keywords
      Burst assembly algorithms
      adaptive hysteresis
      dynamic bandwidth reservation
      optical burst switching
      Permalink
      http://hdl.handle.net/11693/14945
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      • Dept. of Electrical and Electronics Engineering - Master's degree 655
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