Artículo Scopus
RMLSA algorithm for flexible optical networks under dynamic operation [Algoritmo RMLSA para redes ópticas flexibles en operación dinámica].
Registro en:
10.4067/S0718-33052018000300410
Autor
Beghelli, Alejandra
Institución
Resumen
A new RMLSA (Routing, Modulation Level and Spectrum Allocation) algorithm for OFDM dynamic flexible-grid optical networks is proposed. The algorithm, called kSP-MAS-BRAF (k-Shortest Path -Minimum Allocation of Subcarriers - Bit Rate Aware Fit), is a sequential algorithm that first solves the routing problem, then selects the modulation format and level that minimize the use of spectrum and finally allocates spectrum trying to diminish the blocking probability. The optical reach of the route is taken into account to define how to establish the connection that uses a set of OFDM sub-carriers to transmit data.
Simulation results show that kSP-MAS-BRAF displays blocking probabilities up to one order of magnitude lower than previous proposals. These findings might be helpful for network operators studying the alternative of migrating, in a medium term, their networks to dynamic and flexible operation.