A dynamic bandwidth allocation scheme for VSAT-based networks

Abstract

The limited bandwidth available to an organization through an expensive gateway like VSAT (very small aperture terminal) requires proper and effective utilization. This paper proposes a scheme, which allocates bandwidth to applications based on priorities, application metric weights coupled with max-min fairness approach. The applications requiring less bandwidth are fulfilled before the applications requesting for more bandwidth that come under
same priority classes. The scheme is devised such that applications within the same priority are allocated bandwidth by using max-min fairness technique. The scheme is simulated and its performance is evaluated in terms of several performance parameters like bandwidth utilization, application rejection and bandwidth allocation. The simulation result shows that the proposed scheme can be used to cater to the needs of prioritized applications effectively. The flexibility, robustness and least mathematical complexity of the scheme make it suitable for networking applications over VSAT.