Heuristic of differentiated path-shared protection for dual failures in restorable optical networks

Lei Guo; Lemin Li; Hongfang Yu; Jin Cao

doi:10.1117/1.2538437

1 February 2007 Heuristic of differentiated path-shared protection for dual failures in restorable optical networks

Lei Guo, Lemin Li, Hongfang Yu, Jin Cao

Author Affiliations +

Optical Engineering, Vol. 46, Issue 2, 025009 (February 2007). https://doi.org/10.1117/1.2538437

Abstract

In wavelength-division-multiplexing optical networks, the fiber links may share some common physical resources (e.g., cables, conduits), and the consequence is that they have a correlated link failure probability (CLFP), which means that the probability that link l will fail depends on whether link f has failed. Based on CLFP, we propose a new heuristic survivable algorithm, called differentiated path-shared protection (DPSP), to protect against double-link failures in WDM optical networks. In DPSP, each connection request can be assigned one working path and additional backup paths according to the differentiated reliability requirements of users. Compared to previous work, DPSP can obtain better performances in resource utilization ratio and blocking probability.

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

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Lei Guo, Lemin Li, Hongfang Yu, and Jin Cao "Heuristic of differentiated path-shared protection for dual failures in restorable optical networks," Optical Engineering 46(2), 025009 (1 February 2007). https://doi.org/10.1117/1.2538437

Published: 1 February 2007

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