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AIMD algorithms and exponential functionals

Abstract : The behavior of connection transmitting packets into a network according to a general additive-increase multiplicative-decrease (AIMD) algorithm is investigated. It is assumed that loss of packets occurs in clumps. When a packet is lost, a certain number of subsequent packets are also lost (correlated losses). The stationary behavior of this algorithm is analyzed when the rate of occurrence of clumps becomes arbitrarily small. From a probabilistic point of view, it is shown that exponential functionals associated to compound Poisson processes play a key role. A formula for the fractional moments and some density functions are derived. Analytically, to get the explicit expression of the distributions involved, the natural framework of this study turns out to be the q-calculus. Different loss models are then compared using concave ordering. Quite surprisingly, it is shown that, for a fixed loss rate, the correlated loss model has a higher throughput than an uncorrelated loss model.
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Submitted on : Tuesday, May 23, 2006 - 7:53:44 PM
Last modification on : Thursday, October 27, 2022 - 4:03:02 AM
Long-term archiving on: : Sunday, April 4, 2010 - 10:55:06 PM


  • HAL Id : inria-00072141, version 1


Fabrice Guillemin, Philippe Robert, Albertus Zwart. AIMD algorithms and exponential functionals. [Research Report] RR-4447, INRIA. 2002. ⟨inria-00072141⟩



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