The aim of this paper is the analysis of flows on data networks in order to improve traffic conditions. In particular, the attention is focused on optimization techniques and equilibrium solutions for a fluid dynamic model of telecommunication networks. The optimization algorithm allows to redistribute the packets at nodes to avoid congestions. The performance analysis is made through a cost functional measuring the average velocity of packets and depending on priority and distribution coefficients at nodes. The study of the equilibrium flows gives an understanding of the asymptotic solution on the whole network and permits the investigation of security issues when some nodes of the network fail. Here, on the basis of analytical studies, simulative results are obtained. Simulations confirm that the optimization algorithm gives better performances with respect to other choices of the model parameters. For the equilibrium analysis, an iterative algorithm is studied in order to determine outflows equilibria as function of the input flows.

Optimization of flows and analysis of equilibria in telecommunication networks

D'APICE, Ciro;MANZO, Rosanna;RARITA', LUIGI
2009

Abstract

The aim of this paper is the analysis of flows on data networks in order to improve traffic conditions. In particular, the attention is focused on optimization techniques and equilibrium solutions for a fluid dynamic model of telecommunication networks. The optimization algorithm allows to redistribute the packets at nodes to avoid congestions. The performance analysis is made through a cost functional measuring the average velocity of packets and depending on priority and distribution coefficients at nodes. The study of the equilibrium flows gives an understanding of the asymptotic solution on the whole network and permits the investigation of security issues when some nodes of the network fail. Here, on the basis of analytical studies, simulative results are obtained. Simulations confirm that the optimization algorithm gives better performances with respect to other choices of the model parameters. For the equilibrium analysis, an iterative algorithm is studied in order to determine outflows equilibria as function of the input flows.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/1995969
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