Performance of Robust AQM controllers in multibottleneck scenarios
Mario di Bernardo, F. Garofalo, Sabato Manfredi · 2006
Recently, novel robust AQM congestion control strategies for time delay systems have been proposed. These are based on the use of robust reduction methods and H∞strategies resulting in memory and memoryless control laws respectively have been proposed. Their design was carried out on a single bottleneck topology for guaranteeing robust local stability in the presence of network uncertainties in terms of average round-trip time, load and the link capacity. Here we analyze the performance of such robust AQM control strategies on multibottleneck scenarios by NS-2. We will show that despite their original design on single bottle-neck link, they can still guarantee better performance than other more traditional AQM controllers even in the multibottleneck case.