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Optical Engineering

Backup resource reoptimization for survivable optical network
Author(s): Xiaofei Cheng; Chao Lu; Kumaran Veerayah
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Paper Abstract

A backup resource reoptimization scheme is presented. The presented scheme dynamically adjusts backup lightpaths and reoptimizes the optical network resources. Link load and link reliability that vary with time are considered in this reoptimization scheme. Reserved backup lightpaths are dynamically adjusted to avoid traversing both the heavily loaded links and the unreliable links during the network operation. A heuristic algorithm is presented to achieve fast online backup resource reoptimization. Simulation results show that the presented backup resource reoptimization scheme reduces the network blocking probability while improving the robustness of optical networks against multiple link failures, and thus improves the network performance.

Paper Details

Date Published: 1 October 2005
PDF: 5 pages
Opt. Eng. 44(10) 108201 doi: 10.1117/1.2087227
Published in: Optical Engineering Volume 44, Issue 10
Show Author Affiliations
Xiaofei Cheng, Institute for Infocomm Research (Singapore)
Chao Lu, Institute for Infocomm Research (Singapore)
Kumaran Veerayah, Institute for Infocomm Research (Singapore)


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