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Dynamic survivable algorithm for meshed WDM optical networks
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DOI：10.1016/j.jnca.2005.08.006.png)
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In this paper, we propose a novel heuristic survivable algorithm called dynamic path-shared protection (DPSP) to completely protect the double-link failures in meshed Wavelength-division-multiplexing (WDM) optical networks. In order to improve the algorithm performance, we focus on considering two key issues that are load balancing and resource-sharing degree when computing the working and backup paths. We also investigate the trap situations and present a solution method, because the trap situations may lead to high blocking probability (BP). Simulations results show that, DPSP can provide complete protection for the double-link failures; with respect to the previous work, DPSP not only can effectively avoid the trap situations but also is able to obtain higher resource utilization ratio and lower BP. (C) 2005 Elsevier Ltd. All rights reserved.
Keyword:
wavelength-division-multiplexing (WDM)
optical networks
double-link failures
path-shared protection
trap situations
load balancing
resource-sharing degree
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Path protection algorithm with trade-off ability for survivable wavelength-division-multiplexing mesh networks.png)
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