Novo RMLSA com Tonificação de Circuito e ciente da Qualidade de Transmissão com Baixa Margem em Redes Ópticas Elásticas

• Lucas Rodrigues Costa Universidade de Brasília (UnB) http://orcid.org/0000-0002-0973-4866
• Ítalo Barbosa Brasileiro Universidade de Brasília (UnB)
• André Costa Drummond Universidade de Brasília (UnB) http://orcid.org/0000-0001-8913-3755

DOI: https://doi.org/10.5753/sbrc.2020.12283

Resumo

Este artigo avalia as margens de QoT (Quality of Transmission) adotadas em algoritmos RMLSA (Routing, Modulation Level, and Spectrum Assignment) tradicionais que quantificam o QoT por meio do alcance máximo transparente da modulação. É proposto um algoritmo RMLSA que categoriza as margens mínimas que devem ser adotadas para o estabelecimento de novos circuitos, tendo como base a sua degeneração esperada e o impacto causado aos circuitos ópticos já estabelecidos. Resultados de simulação mostram que as margens mínimas propostas associada a tonificação dos circuitos apresentam resultados melhores que algoritmos que propõem uma margem mais justa ou que avaliam o QoT por meio do alcance máximo transparente.

Palavras-chave: Redes Ópticas Elásticas, Qualidade de Transmissão, RMLSA, SNR

Referências

Beyranvand, H. and Salehi, J. A. (2013). A quality-of-transmission aware dynamic routing and spectrum assignment scheme for future elastic optical networks. Journal of Lightwave Technology, 31(18):3043–3054.

Brasileiro, I., Valdemir, J., and Soares, A. (2019). Regenerator assignment with circuit invigorating. Optical Switching and Networking, 34:58 – 66.

Chatterjee, B., Sarma, N., and Oki, E. (2015). Routing and spectrum allocation in elastic optical networks: A tutorial. IEEE Communications Surveys Tutorials, 17(3):1776–1800.

Chen, X., Li, J., Zhu, P., Tang, R., Chen, Z., and He, Y. (2015). Fragmentation-aware routing and spectrum allocation scheme based on distribution of traffic bandwidth in elastic optical networks. Journal of Optical Communications and Networking, 7(11):1064–1074.

Christodoulopoulos, K., Tomkos, I., and Varvarigos, E. (2011). Elastic bandwidth allocation in flexible OFDM-based optical networks. Journal of Lightwave Technology, 29(9):1354–1366.

Costa, L. R. and Drummond, A. C. (2017). New distance-adaptive modulation scheme for elastic optical networks. IEEE Communications Letters, 21(2):282–285.

Costa, L. R. and Drummond, A. C. (2020). ONS - optical network simulator. https://gitlab.com/get-unb/ons.

Feng, M., Jiang, R., and Shen, J. (2017). A segmentation modulation based spectral allocation scheme for elastic optical networks. In 2017 16th International Conference on Optical Communications and Networks (ICOCN), pages 1–3.

Fontinele, A., Santos, I., Jr, J. L., Soares, A., Monteiro, J. S., and Campelo, D. R. (2018). Alocação de Espectro com Redução de Interferências entre Circuitos em Redes ópticas Elásticas. In SBRC 2018, Campos do Jordão, São Paulo.

Fontinele, A., Santos, I., Neto, J. N., Campelo, D. R., and Soares, A. (2017). An Efficient IA-RMLSA Algorithm for Transparent Elastic Optical Networks. Computer Networks, 118:1–14.

Guo, P., Hou, W., Wu, J., and Sun, Z. (2015). Modulation adaptive grooming in green elastic optical networks. In 14th International Conference on Optical Communications and Networks (ICOCN), 2015, pages 1–3.

Johannisson, P. and Agrell, E. (2014). Modeling of nonlinear signal distortion in fiber-optic networks. Journal of Lightwave Technology, 32(23):3942–3950.

Pointurier, Y. (2017). Design of low-margin optical networks. IEEE/OSA Journal of Optical Communications and Networking, 9(1):A9–A17.

Walkowiak, K., Klinkowski, M., and Lechowicz, P. (2017). Influence of modulation format transmission reach on performance of elastic optical networks. In 2017 19th International Conference on Transparent Optical Networks (ICTON), pages 1–4.

Wan, X., Hua, N., and Zheng, X. (2012). Dynamic routing and spectrum assignment in spectrum-flexible transparent optical networks. IEEE/OSA Journal of Optical Communications and Networking, 4(8):603–613.