Cano, C. and Malone, D.
On Efficiency and Validity of Previous Homeplug MAC
Elsevier, Preprint accepted for publication.
The Medium Access Control protocol of Power Line Communication networks
(defined in Homeplug and IEEE 1901 standards) has received relatively
modest attention from the research community. As a consequence,
there is only one analytic model that complies with the standardised MAC
procedures and considers unsaturated conditions. We identify two important
limitations of the existing analytic model: high computational expense
and predicted results just prior to the predicted saturation point do not
correspond to long-term network performance. In this work, we present a
simplification of the previously defined analytic model of Homeplug MAC
able to substantially reduce its complexity and demonstrate that the previous
performance results just before predicted saturation correspond to a
transitory phase. We determine that the causes of previous misprediction
are common analytical assumptions and the potential occurrence of a transitory
phase, that we show to be of extremely long duration under certain
circumstances. We also provide techniques, both analytical and experimental,
to correctly predict long-term behaviour and analyse the effect of specific
Homeplug/IEEE 1901 features on the magnitude of misprediction errors.
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