Abstract

How serious is spectrum fragmentation in an elastic optical network? It is addressed by the tremendous provisioning gain achieved by eliminating a particular kind of fragmentation, namely, one that could be removed by Hitless Optical Path Shift (HOPS), a non-disruptive defragmentation technology. We devised a series of HOPS-based defragmentation algorithms, ranging from proactive to reactive strategies. Analysis and simulation results show that for typical backbone networks operated with a light load, using our optimal reactive defragmentation scheme, 98% of the requested spectrum bandwidth, that is otherwise blocked, can be provisioned. Moreover, the corresponding defragmentation costs (in terms of impact on existing connections, and defragmentation delay) are kept at minimum.

© 2013 IEEE

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References

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  1. R. Wang, B. Mukherjee, "Provisioning in elastic optical networks with non-disruptive defragmentation," Proc. 17th ONDM (2013).
  2. O. Gerstel, M. Jinno, A. Lord, S. J. B. Yoo, "Elastic optical networking: A new dawn for the optical layer?," IEEE Commun. Mag. 50, 12-20 (2012).
  3. M. Jinno, "Distance-adaptive spectrum resource allocation in spectrum-sliced elastic optical path network," IEEE Commun. Mag. 48, 138-145 (2010).
  4. R. Wang, B. Mukherjee, "Spectrum management in heterogeneous bandwidth networks," Proc. IEEE GLOBECOM'12 (2012) pp. 2914-2918.
  5. O. Gerstel, "Flexible use of spectrum and photonic grooming," Proc. IEEE Photon. Switching'10 (2010) pp. PMD3.
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  7. F. Cugini, "Push-pull defragmentation without traffic disruption in flexible grid optical networks," J. Lightw. Technol. 31, 125-133 (2013).
  8. A. N. Patel, P. N. Ji, J. P. Jue, T. Wang, "Defragmentation of transparent flexible optical WDM (FWDM) networks," Proc. IEEE/OSA OFC'11 (2011) pp. OTuI8.
  9. T. Takagi, "Disruption minimized spectrum defragmentation in elastic optical path networks that adopt distance adaptive modulation," Proc. IEEE/OSA ECOC'11 (2011).
  10. M. Zhang, Y. Yin, R. Proietti, Z. Zhu, S. J. B. Yoo, "Spectrum defragmentation algorithms for elastic optical networks using hitless spectrum retuning techniques," Proc. IEEE/OSA OFC'13 (2013).
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  14. T. Xia, "Field experiment with mixed line-rate transmission (112-Gb/s, 450-Gb/s, and 1.15-Tb/s) over 3,560 km of installed fiber using filterless coherent receiver and EDFAs only," Proc. IEEE/OSA OFC'11 (USA) (2011).

2013

F. Cugini, "Push-pull defragmentation without traffic disruption in flexible grid optical networks," J. Lightw. Technol. 31, 125-133 (2013).

2012

O. Gerstel, M. Jinno, A. Lord, S. J. B. Yoo, "Elastic optical networking: A new dawn for the optical layer?," IEEE Commun. Mag. 50, 12-20 (2012).

A. Castro, "Dynamic routing and spectrum (re)allocation in future flexgrid optical networks," Computer Netw. 56, 2869-2883 (2012).

2010

M. Jinno, "Distance-adaptive spectrum resource allocation in spectrum-sliced elastic optical path network," IEEE Commun. Mag. 48, 138-145 (2010).

2000

H. Zang, J. P. Jue, B. Mukherjee, "A review of routing and wavelength assignment approaches for wavelength-routed optical WDM networks," Opt. Netw. Mag. 1, 47-60 (2000).

1996

K. C. Lee, V. O. K. Li, "A wavelength rerouting algorithm in wide-area all-optical networks," J. Lightw. Technol. 14, 1218-1229 (1996).

Computer Netw.

A. Castro, "Dynamic routing and spectrum (re)allocation in future flexgrid optical networks," Computer Netw. 56, 2869-2883 (2012).

IEEE Commun. Mag.

O. Gerstel, M. Jinno, A. Lord, S. J. B. Yoo, "Elastic optical networking: A new dawn for the optical layer?," IEEE Commun. Mag. 50, 12-20 (2012).

M. Jinno, "Distance-adaptive spectrum resource allocation in spectrum-sliced elastic optical path network," IEEE Commun. Mag. 48, 138-145 (2010).

J. Lightw. Technol.

K. C. Lee, V. O. K. Li, "A wavelength rerouting algorithm in wide-area all-optical networks," J. Lightw. Technol. 14, 1218-1229 (1996).

J. Lightw. Technol.

F. Cugini, "Push-pull defragmentation without traffic disruption in flexible grid optical networks," J. Lightw. Technol. 31, 125-133 (2013).

Opt. Netw. Mag.

H. Zang, J. P. Jue, B. Mukherjee, "A review of routing and wavelength assignment approaches for wavelength-routed optical WDM networks," Opt. Netw. Mag. 1, 47-60 (2000).

Other

T. Xia, "Field experiment with mixed line-rate transmission (112-Gb/s, 450-Gb/s, and 1.15-Tb/s) over 3,560 km of installed fiber using filterless coherent receiver and EDFAs only," Proc. IEEE/OSA OFC'11 (USA) (2011).

R. Wang, B. Mukherjee, "Provisioning in elastic optical networks with non-disruptive defragmentation," Proc. 17th ONDM (2013).

A. N. Patel, P. N. Ji, J. P. Jue, T. Wang, "Defragmentation of transparent flexible optical WDM (FWDM) networks," Proc. IEEE/OSA OFC'11 (2011) pp. OTuI8.

T. Takagi, "Disruption minimized spectrum defragmentation in elastic optical path networks that adopt distance adaptive modulation," Proc. IEEE/OSA ECOC'11 (2011).

M. Zhang, Y. Yin, R. Proietti, Z. Zhu, S. J. B. Yoo, "Spectrum defragmentation algorithms for elastic optical networks using hitless spectrum retuning techniques," Proc. IEEE/OSA OFC'13 (2013).

Y. Yin, M. Zhang, Z. Zhu, S. J. B. Yoo, "Fragmentation-aware routing, modulation and spectrum assignment algorithms in elastic optical networks," Proc. IEEE/OSA OFC'13 (2013).

R. Wang, B. Mukherjee, "Spectrum management in heterogeneous bandwidth networks," Proc. IEEE GLOBECOM'12 (2012) pp. 2914-2918.

O. Gerstel, "Flexible use of spectrum and photonic grooming," Proc. IEEE Photon. Switching'10 (2010) pp. PMD3.

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