Quick survivable algorithm with shared-risk link groups in backup-shared restorable optical networks

Lei Guo; Lemin Li; Jin Cao; Hongfang Yu

doi:10.1117/1.2720817

1 April 2007 Quick survivable algorithm with shared-risk link groups in backup-shared restorable optical networks

Lei Guo, Lemin Li, Jin Cao, Hongfang Yu

Author Affiliations +

Optical Engineering, Vol. 46, Issue 4, 045004 (April 2007). https://doi.org/10.1117/1.2720817

Abstract

We propose a novel survivable algorithm, called backup-shared with trap avoidance (BSTA), to protect against single failure with shared-risk link groups (SRLGs) in wavelength-division multiplexing optical networks. In BSTA, each connection request will be assigned one primary path and one SRLG-disjoint backup, or one primary path and two SRLG-disjoint segment-backup paths. In contrast with previous algorithms, BSTA not only can effectively avoid the trap problem, but also can obtain better resource utilization ratio and lower blocking probability. Simulation results are shown to be promising.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Lei Guo, Lemin Li, Jin Cao, and Hongfang Yu "Quick survivable algorithm with shared-risk link groups in backup-shared restorable optical networks," Optical Engineering 46(4), 045004 (1 April 2007). https://doi.org/10.1117/1.2720817

Published: 1 April 2007

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