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- Publisher
- Springer Journals
- Copyright
- Copyright © 2009 by Springer Science+Business Media, LLC
- Subject
- Computer Science; Characterization and Evaluation of Materials; Electrical Engineering; Computer Communication Networks
- ISSN
- 1387-974X
- eISSN
- 1572-8188
- DOI
- 10.1007/s11107-009-0220-z
- Publisher site
- See Article on Publisher Site
Abstract
In wavelength-routed optical networks, the recovery ratio of interrupted connections after failures is mainly affected by adjacent-node resource reservation collisions in a distributed path restoration. This paper proposes a novel collision avoidance wavelength assignment (CA-WA) mechanism to make adjacent nodes select different wavelength assignment schemes and therefore different recovery wavelengths for the recovery routes. Simulation results show that in both single- and double-fiber failure scenarios the proposed wavelength assignment mechanism significantly reduces reservation contentions and achieves a higher recovery ratio, especially when the network load is high.
Journal
Photonic Network Communications – Springer Journals
Published: Sep 24, 2009