Bandwidth Allocation in Self-Sizing Networks

Bandwidth Allocation in Self-Sizing Networks

André C. Drummond

Prof. Nelson L. S. da Fonseca

Measurement Based Equivalent Bandwidth Estimators Evaluation

Measurement Based Equivalent Bandwidth Estimators Evaluation

FEP – Fractal Brownian Motion Envelope Process based Estimator:

GA – Gaussian Approximation Allocation Estimator:

Numeric Results – FEP vs GA Estimative

Numeric Results – FEP vs GA Estimative

Voice (Exponential)

● 400 fonts● 12 Mbps● Hurst 0.6

Data (Pareto)

● 15 Mbps● Hurst 0.75

Video (Real traces)

● 180 fonts● 75 Mbps● Hurst 0.9

FEP is robust and better adapts to different network scenario!

Bandwidth Allocation in Self-Sizing Networks

Bandwidth Allocation in Self-Sizing Networks

The Band Partitioning Problem inherits some uncertainties:● Bandwidth estimators uncertainties;● Network traffic fluctuations;

A Multi-Objective Fuzzy Optimization Model was proposed.

Numeric Results – Classic vs Fuzzy ModelNumeric Results – Classic vs Fuzzy Model

Fuzzy model packet loss values are 54% lower.

Fuzzy model delay values are 33% lower.

Fuzzy model allocates more 9% of link capacity.

The Fuzzy Model provides more flexibility to cope with sudden increases on traffic!