In this work we describe 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 and is based on two cost functionals measuring, respectively, average velocity and average travelling time of packets, both depending on priority and distribution coefficients at nodes. Simulations confirm that the optimization algorithm gives better performances with respect to other choices of the model parameters. 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. An iterative algorithm is studied in order to determine outflows equilibria as function of the input flows.
Optimization of packet flows and analysis of equilibria in data networks
D'APICE, Ciro;MANZO, Rosanna;RARITA', LUIGI
2011
Abstract
In this work we describe 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 and is based on two cost functionals measuring, respectively, average velocity and average travelling time of packets, both depending on priority and distribution coefficients at nodes. Simulations confirm that the optimization algorithm gives better performances with respect to other choices of the model parameters. 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. An iterative algorithm is studied in order to determine outflows equilibria as function of the input flows.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
