Optimal design for $$p$$ p -Cycle-protected elastic optical networks

Optimal design for $$p$$ p -Cycle-protected elastic optical networks This paper considers the $$p$$ p -Cycle network protection technique in comparison with the ring cover technique for elastic optical networks. We develop Integer Linear Programming models to minimize required protection capacity and used link spectra in the whole network. We consider two spectrum conversion capabilities, i.e., no spectrum conversion and full spectrum conversion, for the $$p$$ p -Cycle protection technique. We also apply the bandwidth squeezed restoration technique to obtain the maximum restoration levels for the affected service flows subject to limited frequency-slot capacity in each fiber link. Our studies show that the $$p$$ p -Cycle technique shows much lower spare capacity redundancy than the ring cover technique. In addition, it is found that though the spectrum conversion capability can help improve spectrum efficiency for the $$p$$ p -Cycle technique, the improvement seems not very significant for the static traffic scenario. It is also found that as the number of candidate cycles used in the design increases, the spare capacity efficiency saturates. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Photonic Network Communications Springer Journals

Optimal design for $$p$$ p -Cycle-protected elastic optical networks

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Publisher
Springer US
Copyright
Copyright © 2015 by Springer Science+Business Media New York
Subject
Computer Science; Computer Communication Networks; Electrical Engineering; Characterization and Evaluation of Materials
ISSN
1387-974X
eISSN
1572-8188
D.O.I.
10.1007/s11107-015-0490-6
Publisher site
See Article on Publisher Site

Abstract

This paper considers the $$p$$ p -Cycle network protection technique in comparison with the ring cover technique for elastic optical networks. We develop Integer Linear Programming models to minimize required protection capacity and used link spectra in the whole network. We consider two spectrum conversion capabilities, i.e., no spectrum conversion and full spectrum conversion, for the $$p$$ p -Cycle protection technique. We also apply the bandwidth squeezed restoration technique to obtain the maximum restoration levels for the affected service flows subject to limited frequency-slot capacity in each fiber link. Our studies show that the $$p$$ p -Cycle technique shows much lower spare capacity redundancy than the ring cover technique. In addition, it is found that though the spectrum conversion capability can help improve spectrum efficiency for the $$p$$ p -Cycle technique, the improvement seems not very significant for the static traffic scenario. It is also found that as the number of candidate cycles used in the design increases, the spare capacity efficiency saturates.

Journal

Photonic Network CommunicationsSpringer Journals

Published: Mar 26, 2015

References

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