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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 31, Iss. 15 — Aug. 1, 2013
  • pp: 2491–2500

Provisioning in Elastic Optical Networks with Non-Disruptive Defragmentation

Rui Wang and Biswanath Mukherjee

Journal of Lightwave Technology, Vol. 31, Issue 15, pp. 2491-2500 (2013)


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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

Citation
Rui Wang and Biswanath Mukherjee, "Provisioning in Elastic Optical Networks with Non-Disruptive Defragmentation," J. Lightwave Technol. 31, 2491-2500 (2013)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-31-15-2491

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