Redes Ópticas Elásticas: Planejamento e Otimização
Resumo
Este artigo descreve um método mais flexível de alocação de espectro para redes ópticas. O método mostra que uma alocação de espectro com espaçamentos diferentes entre as frequências, ou seja, Gridless, é mais eficiente que o método tradicional que usa espaçamentos iguais, Grid. Esta nova proposta, que é baseada no sistema de transmissão OFDM, é conhecida como Spectrum-Sliced Elastic Optical Path Network (SLICE) ou simplesmente Redes Ópticas Elásticas. Neste novo tipo de arquitetura de rede, a largura de banda de um caminho óptico pode ser elástica (a largura de banda varia de acordo com a demanda), para assim se adaptar à demanda de tráfego da camada superior. Neste artigo alguns critérios de otimização são validados e propostos para distribuir o tráfego adequadamente (com grooming e sem grooming) nesta nova arquitetura. Simulações foram realizadas para uma rede de 6 nós e redes de grande dimensão. Os resultados sugerem a vantagem, em termos de economia de espectro, do grooming em redes óptica elásticas e economia de espectro em relação a redes ópticas tradicionais.Referências
Assis, K.D.R; Waldman, H. (2002) “Redes Ópticas WDM: Planejamento e Perspectivas Futuras” WPerformance 2002 I Workshop em Desempenho de Sistemas Computacionais e de Comunicação, 2002, Florianópolis. Anais do XXII SBC.
Ramaswami, R. and Sivarajan, K. N. (2001) Optical Networks : A Practical Perspective (Morgan Kaufmann Series in Networking), 2nd edition, Elsevier Science & Technology Books.
Jinno, M., Takara, H., Kozicki, B., Tsukishima, Y., Sone, Y and Matsuoka, S. (2009) “Spectrum-Efficient and Scalable Elastic Optical Path Network: Architecture, Benefits, and Enabling Technologies,” IEEE Comm. Mag., vol.47, pp. 66-73.
Kozicki, B., Takara, H., Yoshimatsu, T., Yonenaga, K. and Jinno, M. (2009) “Filtering Characteristics of Highly-Spectrum Efficient Spectrum-Sliced Elastic Optical Path (SLICE) Network,” Proc. OFC/NFOEC’.
Zhang, G. De Leenheer, M. ; Morea, A.; Mukherjee, B. (2012) “A Survey on OFDM-Based Elastic Core Optical Networking” IEEE Communications Surveys & Tutorials. Issue 99, pp 1-23.
Zhang, Y., Zheng, X., Li, Q., Hua, N., Li, Y and Zhang, H. (2011) "Traffic Grooming in Spectrum-Elastic Optical Path Networks," in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2011), paper OTuI1.
Yang Wang, Xiaojun Cao, Yi Pan. (2011) “A Study of the Routing and Spectrum Allocation in Spectrum-sliced Elastic Optical Path Networks” IEEE Infocom.
Sone, Y. et al., (2011) “Bandwidth Squeezed Restoration in Spectrum-Sliced Elastic Optical Path Networks (SLICE),” J. Optical Communications and Networking, Vol. 3, No. 3, pp. 223-233.
Jinno, M. et al., (2010) “Distance-Adaptive Spectrum Resource Allocation in Spectrum-Sliced Elastic Optical Path Network,” IEEE Commun. Mag.,Vol. 48, Issue. 8, pp. 138-145.
Christodoulopoulos et al., (2010) “Routing and spectrum allocation in OFDM-based optical networks with elastic bandwidth allocation,” IEEE Globecom, Dec.
Klinkowski, M. and Walkowiak, K. (2011) “Routing and Spectrum Assignment in Spectrum Sliced Elastic Optical Path Network” IEEE Communications Letters, August, vol. 15, issue 8, pp. 884-886.
Takagi, T. et. al., (2011) “Dynamic Routing and Frequency Slot Assignment for Elastic Optical Path Networks that Adopt Distance Adaptive Modulation,” Proc. OFC/NFOEC, OTuI7.
Santos, A.,.Santos, C., Durães, G. and Assis, K.D.R. (2012) “Heuristics for Routing in Spectrum-Sliced Elastic Optical Path Networks” The 10th International Conference on Optical Internet (COIN 2012), May 29-31, 2012. Yokohama, Japan. TuP6.
Assis, K.D.R., Camelo Jr, R.C., and Waldman H. (2012) “MILP Formulation for Squeezed Protection in Spectrum-Sliced Elastic Optical Path Networks” 2012 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (IEEE SPECTS 2012) July 8-11, 2012, Genoa, Italy.
IBM ILOG CPLEX: high-performance mathematical programming engine, (2011) [link].
Takara, H. et. al “Distance Adaptive Super-Wavelength Routing in Elastic Optical Path Network (SLICE) with Optica(2010)l OFDM. ECOC 2010. 19-23 September, Torino, Italy.
Ramaswami, R. and Sivarajan, K. N. (2001) Optical Networks : A Practical Perspective (Morgan Kaufmann Series in Networking), 2nd edition, Elsevier Science & Technology Books.
Jinno, M., Takara, H., Kozicki, B., Tsukishima, Y., Sone, Y and Matsuoka, S. (2009) “Spectrum-Efficient and Scalable Elastic Optical Path Network: Architecture, Benefits, and Enabling Technologies,” IEEE Comm. Mag., vol.47, pp. 66-73.
Kozicki, B., Takara, H., Yoshimatsu, T., Yonenaga, K. and Jinno, M. (2009) “Filtering Characteristics of Highly-Spectrum Efficient Spectrum-Sliced Elastic Optical Path (SLICE) Network,” Proc. OFC/NFOEC’.
Zhang, G. De Leenheer, M. ; Morea, A.; Mukherjee, B. (2012) “A Survey on OFDM-Based Elastic Core Optical Networking” IEEE Communications Surveys & Tutorials. Issue 99, pp 1-23.
Zhang, Y., Zheng, X., Li, Q., Hua, N., Li, Y and Zhang, H. (2011) "Traffic Grooming in Spectrum-Elastic Optical Path Networks," in Optical Fiber Communication Conference, OSA Technical Digest (CD) (Optical Society of America, 2011), paper OTuI1.
Yang Wang, Xiaojun Cao, Yi Pan. (2011) “A Study of the Routing and Spectrum Allocation in Spectrum-sliced Elastic Optical Path Networks” IEEE Infocom.
Sone, Y. et al., (2011) “Bandwidth Squeezed Restoration in Spectrum-Sliced Elastic Optical Path Networks (SLICE),” J. Optical Communications and Networking, Vol. 3, No. 3, pp. 223-233.
Jinno, M. et al., (2010) “Distance-Adaptive Spectrum Resource Allocation in Spectrum-Sliced Elastic Optical Path Network,” IEEE Commun. Mag.,Vol. 48, Issue. 8, pp. 138-145.
Christodoulopoulos et al., (2010) “Routing and spectrum allocation in OFDM-based optical networks with elastic bandwidth allocation,” IEEE Globecom, Dec.
Klinkowski, M. and Walkowiak, K. (2011) “Routing and Spectrum Assignment in Spectrum Sliced Elastic Optical Path Network” IEEE Communications Letters, August, vol. 15, issue 8, pp. 884-886.
Takagi, T. et. al., (2011) “Dynamic Routing and Frequency Slot Assignment for Elastic Optical Path Networks that Adopt Distance Adaptive Modulation,” Proc. OFC/NFOEC, OTuI7.
Santos, A.,.Santos, C., Durães, G. and Assis, K.D.R. (2012) “Heuristics for Routing in Spectrum-Sliced Elastic Optical Path Networks” The 10th International Conference on Optical Internet (COIN 2012), May 29-31, 2012. Yokohama, Japan. TuP6.
Assis, K.D.R., Camelo Jr, R.C., and Waldman H. (2012) “MILP Formulation for Squeezed Protection in Spectrum-Sliced Elastic Optical Path Networks” 2012 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (IEEE SPECTS 2012) July 8-11, 2012, Genoa, Italy.
IBM ILOG CPLEX: high-performance mathematical programming engine, (2011) [link].
Takara, H. et. al “Distance Adaptive Super-Wavelength Routing in Elastic Optical Path Network (SLICE) with Optica(2010)l OFDM. ECOC 2010. 19-23 September, Torino, Italy.
Publicado
16/07/2012
Como Citar
QUEIROZ, Igor M.; ASSIS, Karcius D. R..
Redes Ópticas Elásticas: Planejamento e Otimização. In: WORKSHOP EM DESEMPENHO DE SISTEMAS COMPUTACIONAIS E DE COMUNICAÇÃO (WPERFORMANCE), 11. , 2012, Curitiba/PR.
Anais [...].
Porto Alegre: Sociedade Brasileira de Computação,
2012
.
p. 155-167.
ISSN 2595-6167.
