RT info:eu-repo/semantics/conferenceObject T1 Migration Strategy from C-Band Elastic Optical Network to C+ L Multiband Optical Network A1 Hosseini, Soheil A1 Durán Barroso, Ramón José A1 Miguel Jiménez, Ignacio de A1 González de Dios, Óscar A1 Merayo Álvarez, Noemí A1 Aguado Manzano, Juan Carlos A1 Echeverry, Edward A1 Fernández Reguero, Patricia A1 Lorenzo Toledo, Rubén Mateo A1 Abril Domingo, Evaristo José K1 multi-band networks K1 optical fibers K1 transmission capacity K1 provisioning AB Multi-band elastic optical network (MB-EON) is a promising technology to extend the bandwidth of the current elastic optical networks in the middle term. The migration from current networks to MB-EONs should be made carefully taking into account both the required cost and the bandwidth requirements. This paper focuses on the necessity of looking for a trade-off between the links to be upgraded during the migration from the standard C-band to the L-band and the acceptable level of capacity increase. Therefore, it makes two contributions to efficiently upgrade current elastic optical networks: firstly, a planning method to decide which fibers should be upgraded to exploit C+L band; and second, one heuristic for solving the routing, band, modulation level, and spectrum assignment (RBMLSA) problem during network operation. Simulation results demonstrate that, thanks to use of these proposals, the upgrade of a set of the fibers could be viewed as a fully convincing middle term solution by the network operators to get around the huge cost of the whole network migration to C+L line system. PB Institute of Electrical and Electronics Engineers (IEEE) YR 2022 FD 2022 LK https://uvadoc.uva.es/handle/10324/62350 UL https://uvadoc.uva.es/handle/10324/62350 LA eng NO 2022 32nd International Telecommunication Networks and Applications Conference (ITNAC), Wellington, New Zealand, 2022, pp. 204-206 NO Producción Científica DS UVaDOC RD 28-jun-2024