Abstract

In a flexible-bandwidth optical network (FBON) with a generalized multiprotocol label switching control plane, the resource reservation protocol with traffic engineering extensions (RSVP-TE) is employed to establish end-to-end bandwidth variable lightpaths. The resource reservation can be blocked due to spectrum contention of different concurrent RSVP instances (called backward blocking), and it is the predominant blocking contribution when traffic load is low and arrival highly dynamic. Also, due to its flexible traffic granularity in FBON, the backward collision would happen more frequently and the collision scenario would be more complicated than that in wavelength-routed networking; thus the need for a collision evaluation and avoiding method. So, a collision-avoiding routing with maximum available spectrum allocation (SA) options and an SA scheme to search the spectrum segment with minimum collision possibility are proposed for backward blocking reduction, as well as an extension to the RSVP-TE. Simulation results show that the proposed algorithm could achieve better blocking performance through significantly reducing the backward reservation collision but with acceptable forward blocking deterioration. At the same time, with the proposed algorithm, different granularity traffic could be served more fairly in FBON.

© 2013 Optical Society of America

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2013

R. Casellas, R. Munoz, J. M. Fàbrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” J. Sel. Areas Commun., vol.  31, no. 1, pp. 49–61, 2013.
[CrossRef]

M. Klinkowski, M. Ruiz, L. Velasco, D. Careglio, V. Lopez, and J. Comellas, “Elastic spectrum allocation for time-varying traffic in flexgrid optical networks,” J. Sel. Areas Commun., vol.  31, no. 1, pp. 26–38, 2013.
[CrossRef]

S. Zhang, C. Martel, and B. Mukherjee, “Dynamic traffic grooming in elastic optical networks,” J. Sel. Areas Commun., vol.  31, no. 1, pp. 4–12, 2013.
[CrossRef]

2012

P. Ji, D. Qian, K. Kanonakis, C. Kachris, and I. Tomkos, “Design and evaluation of a flexible-bandwidth OFDM-based intra data center interconnect,” J. Sel. Top. Quantum Electron., vol.  19, no. 2, pp. 299–308, 2012.
[CrossRef]

L. Gong, X. Zhou, W. Lu, and Z. Zhu, “A two-population based evolutionary approach for optimizing routing, modulation, and spectrum assignments (RMSA) in O-OFDM networks,” Commun. Lett., vol.  16, no. 9, pp. 1520–1523, 2012.
[CrossRef]

A. Castro, L. Velasco, M. Ruiz, M. Klinkowski, J. P. Fernández-Palacios, and D. Careglio, “Dynamic routing and spectrum (re)allocation in future flexgrid optical networks,” Comput. Netw., vol.  56, no. 12, pp. 2869–2883, 2012.
[CrossRef]

X. Wan, N. Hua, and X. Zheng, “Dynamic routing and spectrum assignment in spectrum-flexible transparent optical networks,” J. Opt. Commun. Netw., vol.  4, no. 8, pp. 603–613, 2012.
[CrossRef]

2011

K. Christodoulopoulos and E. A. Varvarigos, “Elastic bandwidth allocation in flexible OFDM-based optical networks,” J. Lightwave Technol., vol.  29, no. 9, pp. 1354–1366, 2011.
[CrossRef]

D. J. Geisler, Y. Yin, K. Wen, N. K. Fontaine, R. P. Scott, S. Chang, and S. J. B. Yoo, “Demonstration of spectral defragmentation in flexible bandwidth optical networking by FWM,” IEEE Photon. Technol. Lett., vol.  23, no. 24, pp. 1893–1895, 2011.
[CrossRef]

2010

M. Jinno, B. Kozicki, H. Takara, A. Watanabe, Y. Sone, T. Tanaka, and A. Hirano, “Distance-adaptive spectrum resource allocation in spectrum-sliced elastic optical path network,” IEEE Commun. Mag., vol.  48, no. 8, pp. 138–145, 2010.
[CrossRef]

G. Marchetto, “High-priority first transmission to efficiently support service differentiation in just-in-time OBS networks,” J. Opt. Commun. Netw., vol.  2, no. 12, pp. 1031–1041, 2010.
[CrossRef]

2009

M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag., vol.  47, no. 11, pp. 66–73, 2009.
[CrossRef]

A. Giorgetti, N. Sambo, I. Cerutti, N. Andriolli, and P. Castoldi, “Label preference schemes for lightpath provisioning and restoration in distributed GMPLS networks,” J. Lightwave Technol., vol.  27, no. 6, pp. 688–697, 2009.
[CrossRef]

2008

L. Wang, J. Zhang, G. Gao, Y. Liu, X. Chen, Y. Zhao, Y. Yao, and W. Gu, “A collision-aware wavelength assignment scheme for GMPLS based WDM networks,” Commun. Lett., vol.  12, no. 8, pp. 593–595, 2008.

2007

X. Zhu, X. Zheng, and M. Veeraraghavan, “Experiences in implementing an experimental wide-area GMPLS network,” J. Sel. Areas Commun., vol.  25, no. 4, pp. 82–92, 2007.
[CrossRef]

1999

A. Neogi, T. Chiueh, and S. Brook, “Performance analysis of an RSVP-capable router,” IEEE Netw., vol.  13, no. 5, pp. 56–63, 1999.
[CrossRef]

Anagnostopoulos, V.

C. Politi, V. Anagnostopoulos, C. Matrakidis, A. Stavdas, A. Lord, V. Lopez, and J. Fernandez-Palacios, “Dynamic operation of flexi-grid OFDM-based networks,” in Optical Fiber Communication Conf. and Expo. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, 2012, paper OTh3B.2.

Andriolli, N.

A. Giorgetti, N. Sambo, I. Cerutti, N. Andriolli, and P. Castoldi, “Label preference schemes for lightpath provisioning and restoration in distributed GMPLS networks,” J. Lightwave Technol., vol.  27, no. 6, pp. 688–697, 2009.
[CrossRef]

A. Giorgetti, N. Sambo, I. Cerutti, N. Andriolli, and P. Castoldi, “Suggested vector scheme with crankback mechanism in GMPLS-controlled optical networks,” in Proc. Optical Network Design Modeling (ONDM), Kyoto, Japan, 2010.

Bottari, G.

F. Cugini, M. Secondini, N. Sambo, G. Bottari, G. Bruno, P. Iovanna, and P. Castoldi, “Push-pull technique for defragmentation in flexible optical networks,” in Optical Fiber Communication Conf. and Expo. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, 2012, paper JTh2A.40.

N. Sambo, F. Cugini, G. Bottari, P. Iovanna, and P. Castoldi, “Distributed setup in optical networks with flexible grid,” in European Conf. and Exhibition on Optical Communication (ECOC), Geneva, 2011, paper We.10.P1.100.

Brook, S.

A. Neogi, T. Chiueh, and S. Brook, “Performance analysis of an RSVP-capable router,” IEEE Netw., vol.  13, no. 5, pp. 56–63, 1999.
[CrossRef]

Bruno, G.

F. Cugini, M. Secondini, N. Sambo, G. Bottari, G. Bruno, P. Iovanna, and P. Castoldi, “Push-pull technique for defragmentation in flexible optical networks,” in Optical Fiber Communication Conf. and Expo. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, 2012, paper JTh2A.40.

Buckley, F.

F. Buckley and F. Harary, Distance in Graphs. Redwood City, CA: Addison-Wesley, 1990, pp. 117–130.

Cao, X.

Y. Wang, X. Cao, and Y. Pan, “A study of the routing and spectrum allocation in spectrum-sliced elastic optical path networks,” in Proc. INFOCOM, Shanghai, China, 2011, pp. 1503–1511.

Careglio, D.

M. Klinkowski, M. Ruiz, L. Velasco, D. Careglio, V. Lopez, and J. Comellas, “Elastic spectrum allocation for time-varying traffic in flexgrid optical networks,” J. Sel. Areas Commun., vol.  31, no. 1, pp. 26–38, 2013.
[CrossRef]

A. Castro, L. Velasco, M. Ruiz, M. Klinkowski, J. P. Fernández-Palacios, and D. Careglio, “Dynamic routing and spectrum (re)allocation in future flexgrid optical networks,” Comput. Netw., vol.  56, no. 12, pp. 2869–2883, 2012.
[CrossRef]

Casellas, R.

R. Casellas, R. Munoz, J. M. Fàbrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” J. Sel. Areas Commun., vol.  31, no. 1, pp. 49–61, 2013.
[CrossRef]

Castoldi, P.

A. Giorgetti, N. Sambo, I. Cerutti, N. Andriolli, and P. Castoldi, “Label preference schemes for lightpath provisioning and restoration in distributed GMPLS networks,” J. Lightwave Technol., vol.  27, no. 6, pp. 688–697, 2009.
[CrossRef]

A. Giorgetti, L. Valcarenghi, F. Cugini, and P. Castoldi, “PCE-based dynamic restoration in wavelength switched optical networks,” in Proc. IEEE Int. Conf. Communications (ICC), Cape Town, South Africa, 2010.

A. Giorgetti, N. Sambo, I. Cerutti, N. Andriolli, and P. Castoldi, “Suggested vector scheme with crankback mechanism in GMPLS-controlled optical networks,” in Proc. Optical Network Design Modeling (ONDM), Kyoto, Japan, 2010.

N. Sambo, F. Cugini, G. Bottari, P. Iovanna, and P. Castoldi, “Distributed setup in optical networks with flexible grid,” in European Conf. and Exhibition on Optical Communication (ECOC), Geneva, 2011, paper We.10.P1.100.

F. Cugini, M. Secondini, N. Sambo, G. Bottari, G. Bruno, P. Iovanna, and P. Castoldi, “Push-pull technique for defragmentation in flexible optical networks,” in Optical Fiber Communication Conf. and Expo. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, 2012, paper JTh2A.40.

Castro, A.

A. Castro, L. Velasco, M. Ruiz, M. Klinkowski, J. P. Fernández-Palacios, and D. Careglio, “Dynamic routing and spectrum (re)allocation in future flexgrid optical networks,” Comput. Netw., vol.  56, no. 12, pp. 2869–2883, 2012.
[CrossRef]

Cerutti, I.

A. Giorgetti, N. Sambo, I. Cerutti, N. Andriolli, and P. Castoldi, “Label preference schemes for lightpath provisioning and restoration in distributed GMPLS networks,” J. Lightwave Technol., vol.  27, no. 6, pp. 688–697, 2009.
[CrossRef]

A. Giorgetti, N. Sambo, I. Cerutti, N. Andriolli, and P. Castoldi, “Suggested vector scheme with crankback mechanism in GMPLS-controlled optical networks,” in Proc. Optical Network Design Modeling (ONDM), Kyoto, Japan, 2010.

Chang, S.

D. J. Geisler, Y. Yin, K. Wen, N. K. Fontaine, R. P. Scott, S. Chang, and S. J. B. Yoo, “Demonstration of spectral defragmentation in flexible bandwidth optical networking by FWM,” IEEE Photon. Technol. Lett., vol.  23, no. 24, pp. 1893–1895, 2011.
[CrossRef]

Chen, X.

L. Wang, J. Zhang, G. Gao, Y. Liu, X. Chen, Y. Zhao, Y. Yao, and W. Gu, “A collision-aware wavelength assignment scheme for GMPLS based WDM networks,” Commun. Lett., vol.  12, no. 8, pp. 593–595, 2008.

X. Chen, B. Guo, J. Li, Z. Chen, and Y. He, “A pattern-layered routing and spectrum allocation in OFDM-based flexible optical networks,” in Asia Communications Photonics Conf., Guang Zhou, China, 2012, paper AS4D.5.

Chen, Z.

X. Chen, B. Guo, J. Li, Z. Chen, and Y. He, “A pattern-layered routing and spectrum allocation in OFDM-based flexible optical networks,” in Asia Communications Photonics Conf., Guang Zhou, China, 2012, paper AS4D.5.

Y. Zhao, B. Guo, J. Li, Z. Chen, and Y. He, “Energy efficient spectrum allocation in load-adaptive bandwidth-variable switching networks,” in Proc. Opto-Electronics Communication Conf. (OECC), Busan, South Korea, 2012, pp. 24–25.

Chiueh, T.

A. Neogi, T. Chiueh, and S. Brook, “Performance analysis of an RSVP-capable router,” IEEE Netw., vol.  13, no. 5, pp. 56–63, 1999.
[CrossRef]

Christodoulopoulos, K.

Comellas, J.

M. Klinkowski, M. Ruiz, L. Velasco, D. Careglio, V. Lopez, and J. Comellas, “Elastic spectrum allocation for time-varying traffic in flexgrid optical networks,” J. Sel. Areas Commun., vol.  31, no. 1, pp. 26–38, 2013.
[CrossRef]

Cugini, F.

A. Giorgetti, L. Valcarenghi, F. Cugini, and P. Castoldi, “PCE-based dynamic restoration in wavelength switched optical networks,” in Proc. IEEE Int. Conf. Communications (ICC), Cape Town, South Africa, 2010.

N. Sambo, F. Cugini, G. Bottari, P. Iovanna, and P. Castoldi, “Distributed setup in optical networks with flexible grid,” in European Conf. and Exhibition on Optical Communication (ECOC), Geneva, 2011, paper We.10.P1.100.

F. Cugini, M. Secondini, N. Sambo, G. Bottari, G. Bruno, P. Iovanna, and P. Castoldi, “Push-pull technique for defragmentation in flexible optical networks,” in Optical Fiber Communication Conf. and Expo. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, 2012, paper JTh2A.40.

Dahlfort, S.

S. Dahlfort, M. Xia, R. Proietti, and S. J. B. Yoo, “Split spectrum approach to elastic optical networking,” in European Conf. and Exhibition on Optical Communication (ECOC), Amsterdam, 2012, paper Tu.3.D.4.

Dutta, R.

R. Dutta, A. E. Kamal, and G. N. Rouskas, Traffic Grooming for Optical Networks: Foundations, Techniques, and Frontiers. New York: Springer, 2008.

Fàbrega, J. M.

R. Casellas, R. Munoz, J. M. Fàbrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” J. Sel. Areas Commun., vol.  31, no. 1, pp. 49–61, 2013.
[CrossRef]

Fernandez-Palacios, J.

C. Politi, V. Anagnostopoulos, C. Matrakidis, A. Stavdas, A. Lord, V. Lopez, and J. Fernandez-Palacios, “Dynamic operation of flexi-grid OFDM-based networks,” in Optical Fiber Communication Conf. and Expo. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, 2012, paper OTh3B.2.

Fernández-Palacios, J. P.

A. Castro, L. Velasco, M. Ruiz, M. Klinkowski, J. P. Fernández-Palacios, and D. Careglio, “Dynamic routing and spectrum (re)allocation in future flexgrid optical networks,” Comput. Netw., vol.  56, no. 12, pp. 2869–2883, 2012.
[CrossRef]

Fontaine, N. K.

D. J. Geisler, Y. Yin, K. Wen, N. K. Fontaine, R. P. Scott, S. Chang, and S. J. B. Yoo, “Demonstration of spectral defragmentation in flexible bandwidth optical networking by FWM,” IEEE Photon. Technol. Lett., vol.  23, no. 24, pp. 1893–1895, 2011.
[CrossRef]

Gao, G.

L. Wang, J. Zhang, G. Gao, Y. Liu, X. Chen, Y. Zhao, Y. Yao, and W. Gu, “A collision-aware wavelength assignment scheme for GMPLS based WDM networks,” Commun. Lett., vol.  12, no. 8, pp. 593–595, 2008.

Geisler, D. J.

D. J. Geisler, Y. Yin, K. Wen, N. K. Fontaine, R. P. Scott, S. Chang, and S. J. B. Yoo, “Demonstration of spectral defragmentation in flexible bandwidth optical networking by FWM,” IEEE Photon. Technol. Lett., vol.  23, no. 24, pp. 1893–1895, 2011.
[CrossRef]

Giorgetti, A.

A. Giorgetti, N. Sambo, I. Cerutti, N. Andriolli, and P. Castoldi, “Label preference schemes for lightpath provisioning and restoration in distributed GMPLS networks,” J. Lightwave Technol., vol.  27, no. 6, pp. 688–697, 2009.
[CrossRef]

A. Giorgetti, N. Sambo, I. Cerutti, N. Andriolli, and P. Castoldi, “Suggested vector scheme with crankback mechanism in GMPLS-controlled optical networks,” in Proc. Optical Network Design Modeling (ONDM), Kyoto, Japan, 2010.

A. Giorgetti, L. Valcarenghi, F. Cugini, and P. Castoldi, “PCE-based dynamic restoration in wavelength switched optical networks,” in Proc. IEEE Int. Conf. Communications (ICC), Cape Town, South Africa, 2010.

Gong, L.

L. Gong, X. Zhou, W. Lu, and Z. Zhu, “A two-population based evolutionary approach for optimizing routing, modulation, and spectrum assignments (RMSA) in O-OFDM networks,” Commun. Lett., vol.  16, no. 9, pp. 1520–1523, 2012.
[CrossRef]

Gu, W.

L. Wang, J. Zhang, G. Gao, Y. Liu, X. Chen, Y. Zhao, Y. Yao, and W. Gu, “A collision-aware wavelength assignment scheme for GMPLS based WDM networks,” Commun. Lett., vol.  12, no. 8, pp. 593–595, 2008.

Guo, B.

Y. Zhao, B. Guo, J. Li, Z. Chen, and Y. He, “Energy efficient spectrum allocation in load-adaptive bandwidth-variable switching networks,” in Proc. Opto-Electronics Communication Conf. (OECC), Busan, South Korea, 2012, pp. 24–25.

X. Chen, B. Guo, J. Li, Z. Chen, and Y. He, “A pattern-layered routing and spectrum allocation in OFDM-based flexible optical networks,” in Asia Communications Photonics Conf., Guang Zhou, China, 2012, paper AS4D.5.

Harary, F.

F. Buckley and F. Harary, Distance in Graphs. Redwood City, CA: Addison-Wesley, 1990, pp. 117–130.

Hasegawa, H.

T. Takagi, H. Hasegawa, K. Sato, Y. Sone, A. Hirano, and M. Jinno, “Disruption minimized spectrum defragmentation in elastic optical path networks that adopt distance adaptive modulation,” in European Conf. and Exhibition on Optical Communication (ECOC), Geneva, 2011, paper Mo.2.K.3.

He, Y.

Y. Zhao, B. Guo, J. Li, Z. Chen, and Y. He, “Energy efficient spectrum allocation in load-adaptive bandwidth-variable switching networks,” in Proc. Opto-Electronics Communication Conf. (OECC), Busan, South Korea, 2012, pp. 24–25.

X. Chen, B. Guo, J. Li, Z. Chen, and Y. He, “A pattern-layered routing and spectrum allocation in OFDM-based flexible optical networks,” in Asia Communications Photonics Conf., Guang Zhou, China, 2012, paper AS4D.5.

Hirano, A.

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M. T. M. Jinno, T. Ohara, Y. Sone, A. Hirano, O. Ishida, and M. Tomizawa, “Introducing elasticity and adaptation into the optical domain toward more efficient scalable optical transport networks,” in ITU-T Kaleidoscope: Beyond the Internet? - Innovations for Future Networks Services, Pune, India, 2010.

T. Takagi, H. Hasegawa, K. Sato, Y. Sone, A. Hirano, and M. Jinno, “Disruption minimized spectrum defragmentation in elastic optical path networks that adopt distance adaptive modulation,” in European Conf. and Exhibition on Optical Communication (ECOC), Geneva, 2011, paper Mo.2.K.3.

Hua, N.

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N. Sambo, F. Cugini, G. Bottari, P. Iovanna, and P. Castoldi, “Distributed setup in optical networks with flexible grid,” in European Conf. and Exhibition on Optical Communication (ECOC), Geneva, 2011, paper We.10.P1.100.

F. Cugini, M. Secondini, N. Sambo, G. Bottari, G. Bruno, P. Iovanna, and P. Castoldi, “Push-pull technique for defragmentation in flexible optical networks,” in Optical Fiber Communication Conf. and Expo. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, 2012, paper JTh2A.40.

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M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag., vol.  47, no. 11, pp. 66–73, 2009.
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T. Takagi, H. Hasegawa, K. Sato, Y. Sone, A. Hirano, and M. Jinno, “Disruption minimized spectrum defragmentation in elastic optical path networks that adopt distance adaptive modulation,” in European Conf. and Exhibition on Optical Communication (ECOC), Geneva, 2011, paper Mo.2.K.3.

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M. T. M. Jinno, T. Ohara, Y. Sone, A. Hirano, O. Ishida, and M. Tomizawa, “Introducing elasticity and adaptation into the optical domain toward more efficient scalable optical transport networks,” in ITU-T Kaleidoscope: Beyond the Internet? - Innovations for Future Networks Services, Pune, India, 2010.

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M. Jinno, B. Kozicki, H. Takara, A. Watanabe, Y. Sone, T. Tanaka, and A. Hirano, “Distance-adaptive spectrum resource allocation in spectrum-sliced elastic optical path network,” IEEE Commun. Mag., vol.  48, no. 8, pp. 138–145, 2010.
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X. Chen, B. Guo, J. Li, Z. Chen, and Y. He, “A pattern-layered routing and spectrum allocation in OFDM-based flexible optical networks,” in Asia Communications Photonics Conf., Guang Zhou, China, 2012, paper AS4D.5.

Y. Zhao, B. Guo, J. Li, Z. Chen, and Y. He, “Energy efficient spectrum allocation in load-adaptive bandwidth-variable switching networks,” in Proc. Opto-Electronics Communication Conf. (OECC), Busan, South Korea, 2012, pp. 24–25.

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R. Casellas, R. Munoz, J. M. Fàbrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” J. Sel. Areas Commun., vol.  31, no. 1, pp. 49–61, 2013.
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M. Klinkowski, M. Ruiz, L. Velasco, D. Careglio, V. Lopez, and J. Comellas, “Elastic spectrum allocation for time-varying traffic in flexgrid optical networks,” J. Sel. Areas Commun., vol.  31, no. 1, pp. 26–38, 2013.
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M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag., vol.  47, no. 11, pp. 66–73, 2009.
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M. Klinkowski, M. Ruiz, L. Velasco, D. Careglio, V. Lopez, and J. Comellas, “Elastic spectrum allocation for time-varying traffic in flexgrid optical networks,” J. Sel. Areas Commun., vol.  31, no. 1, pp. 26–38, 2013.
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F. Cugini, M. Secondini, N. Sambo, G. Bottari, G. Bruno, P. Iovanna, and P. Castoldi, “Push-pull technique for defragmentation in flexible optical networks,” in Optical Fiber Communication Conf. and Expo. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, 2012, paper JTh2A.40.

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T. Takagi, H. Hasegawa, K. Sato, Y. Sone, A. Hirano, and M. Jinno, “Disruption minimized spectrum defragmentation in elastic optical path networks that adopt distance adaptive modulation,” in European Conf. and Exhibition on Optical Communication (ECOC), Geneva, 2011, paper Mo.2.K.3.

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M. Jinno, B. Kozicki, H. Takara, A. Watanabe, Y. Sone, T. Tanaka, and A. Hirano, “Distance-adaptive spectrum resource allocation in spectrum-sliced elastic optical path network,” IEEE Commun. Mag., vol.  48, no. 8, pp. 138–145, 2010.
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M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag., vol.  47, no. 11, pp. 66–73, 2009.
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M. T. M. Jinno, T. Ohara, Y. Sone, A. Hirano, O. Ishida, and M. Tomizawa, “Introducing elasticity and adaptation into the optical domain toward more efficient scalable optical transport networks,” in ITU-T Kaleidoscope: Beyond the Internet? - Innovations for Future Networks Services, Pune, India, 2010.

T. Takagi, H. Hasegawa, K. Sato, Y. Sone, A. Hirano, and M. Jinno, “Disruption minimized spectrum defragmentation in elastic optical path networks that adopt distance adaptive modulation,” in European Conf. and Exhibition on Optical Communication (ECOC), Geneva, 2011, paper Mo.2.K.3.

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M. Jinno, B. Kozicki, H. Takara, A. Watanabe, Y. Sone, T. Tanaka, and A. Hirano, “Distance-adaptive spectrum resource allocation in spectrum-sliced elastic optical path network,” IEEE Commun. Mag., vol.  48, no. 8, pp. 138–145, 2010.
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M. Jinno, H. Takara, B. Kozicki, Y. Tsukishima, Y. Sone, and S. Matsuoka, “Spectrum-efficient and scalable elastic optical path network: architecture, benefits, and enabling technologies,” IEEE Commun. Mag., vol.  47, no. 11, pp. 66–73, 2009.
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Y. Wang, X. Cao, and Y. Pan, “A study of the routing and spectrum allocation in spectrum-sliced elastic optical path networks,” in Proc. INFOCOM, Shanghai, China, 2011, pp. 1503–1511.

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M. Jinno, B. Kozicki, H. Takara, A. Watanabe, Y. Sone, T. Tanaka, and A. Hirano, “Distance-adaptive spectrum resource allocation in spectrum-sliced elastic optical path network,” IEEE Commun. Mag., vol.  48, no. 8, pp. 138–145, 2010.
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Comput. Netw.

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Figures (5)

Fig. 1.
Fig. 1.

Illustration of PLG generation. (a) Physical network and instant spectrum utilization. (b) Corresponding PLG for a specific request. (c) LCM.

Fig. 2.
Fig. 2.

Example of CA-SA.

Fig. 3.
Fig. 3.

Blocking performance of different RSA versus NL.

Fig. 4.
Fig. 4.

Load-balancing performance of proposed schemes.

Fig. 5.
Fig. 5.

Blocking performance versus arrival rate.

Tables (6)

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Algorithm 2 Collision-Aware SA

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TABLE I Required FSs for Different Data Rate Traffic With Different Transmission Length

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TABLE II Processing Delays of RSVP-TE Messages

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TABLE III Normalized SFR of Traffic Requiring 4 FSs ( SFR 4 / 1 )

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TABLE IV Normalized SFR of Traffic Requiring 10 FSs ( SFR 10 / 1 )

Equations (4)

Equations on this page are rendered with MathJax. Learn more.

c l e = { 1 , when e exists in PLG l 0 , otherwise .
R = ( r m n ) N × N ,
{ r m n = 1 , if and only if k = 1 N 1 a m n ( k ) > 0 ; r m n = 0 , otherwise ; a m n ( k ) = h = 1 N a m h ( k 1 ) a h n .
h * = ( D log α h m n ) / e u ,