An Integrated Design for Topologies of Optical Networks

Karcius D.R Assis, H. Waldman

DOI: 10.14209/its.2002.751

Evento: 2002 International Telecommunications Symposium (ITS2002)

Keywords:

Abstract

"Traditional approaches to wavelength routing network design divide it into two separate problems: virtual topology design (VTD), in which best connections among nodes are derived from traffic demand; and routing-and-wavelength assignment (RWA), in which physical paths are accommodated in the physical topology to support the requested connections. We propose an iterative linear programming approach to solve both problems jointly under multiple objectives such as congestion avoidance, fiber load and wavelength pool minimization. The solution of the VTD problem generates a request for a set of paths to be supplied by the physical topology. Physical paths are then allocated in order to minimize some objective function that is akin to a linear programming formulation."

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