Routing and Spectrum Assignment Using Deep Reinforcement Learning in Optical Networks

Routing and Spectrum Assignment in Spectrum Flexible Transparent Optical Networks

. The considered problem of routing and spectrum assignment (RSA) takes into consideration minimizing the length of the transmission distance under spectrum continuity constraints and the relationship between the traffic bitrates and the spectrum bandwidth. The proposed algorithms constitute modifications of the well-known Dijkstra's algorithm. The obtained results show that a significant reduc...

A Routing and Spectrum Assignment Problem in Optical OFDM Networks

—Optical Orthogonal Frequency Division Multiplexing (O-OFDM) is a novel and attractive modulation technology enabling exible sub-wavelength and super-channel transmission in optical networks. In an OFDM-based optical network with elastic bandwidth provisioning, the problem of Routing and Spectrum Assignment (RSA) emerges. RSA is NP-hard and it can be computationally exhaustive even for small ne...

Routing, Spectrum, and Transponder Assignment (RSTA) in Elastic Optical Networks

Backbone networks are evolving toward Elastic Optical Network (EON) architecture that allows a flexible and efficient use of spectrum resources. Flexibility in EONs is guaranteed also by emerging sliceable bandwidth variable transponders (SBVTs) that support the simultaneous generation of multiple optical carriers. Such carriers can be used to serve different lightpaths (i.e., slice-ability), o...

Routing and Wavelength Assignment in Optical Networks

Algorithms of Routing and Spectrum Assignment in Spectrum Flexible Transparent Optical Networks

. The considered problem of routing and spectrum assignment (RSA) takes into consideration minimizing the length of the transmission distance under spectrum continuity constraints and the relationship between the traffic bitrates and the spectrum bandwidth. The proposed algorithms constitute modifications of the well-known Dijkstra's algorithm. The obtained results show that a significant reduc...