RT info:eu-repo/semantics/article
T1 Enabling Service Level Agreement-Differentiated Protection in C+L Multiband Optical Networks
A1 Hosseini, Soheil
A1 Miguel Jiménez, Ignacio de
A1 Merayo Álvarez, Noemí
A1 González de Dios, Óscar
A1 Lorenzo Toledo, Rubén Mateo
A1 Durán Barroso, Ramón José
K1 Multiband elastic optical networks
K1 Survivability
K1 Fiber-cut
K1 EDFA failure
K1 Service level agreement
K1 Dynamic network performance
AB Band division multiplexing (BDM) is a promising technology to upgrade the capacity of elastic optical networks (EON). By using both C and L bands instead of just the C-band, networks can support a larger number of connections. This paper presents and analyzes a set of novel strategies to ensure resiliency in multiband optical networks leveraging the unique characteristics of these networks and their amplifiers. We investigate two new protection methods for these networks, erbium-doped fiber amplifier (EDFA) protection and hybrid protection, and compare them with two established protection techniques, dedicated path protection (DPP) and shared backup path protection (SBPP). Recognizing that protection requirements vary among services, we also propose a service level agreement (SLA) differentiated protection mechanism that combines these strategies. High-priority clients receive robust protection against single failures of fibers or EDFAs through DPP or SBPP, while low-priority clients are safeguarded at least against EDFA failures via EDFA or hybrid protection. Our studies explore the most effective combinations of these techniques across various scenarios, demonstrating the advantages of SLA-differentiated protection over the utilization of a single classical protection method for all clients. Furthermore, we propose and analyze a more flexible protection mechanism that allows clients to divide their traffic into two segments: one requiring a high level of protection and the other a lower level. This flexibility enhances the protection options available, enabling a finer categorization of user needs and making it an attractive choice for network operators.
PB Institute of Electrical and Electronics Engineers (IEEE)
SN 2644-125X
YR 2025
FD 2025
LK https://uvadoc.uva.es/handle/10324/74498
UL https://uvadoc.uva.es/handle/10324/74498
LA eng
NO IEEE Open Journal of the Communications Society, 2025, vol. 6, pp. 316-331
NO Producción Científica
DS UVaDOC
RD 23-feb-2025