Open AccessPath protection algorithm with trade-off ability for survivable wavelength-division-multiplexing mesh networks
Author(s) -
Lei Guo,
Hongfang Yu,
Lemin Li
Publication year - 2004
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.005834
Subject(s) - path protection , wavelength division multiplexing , backup , computer science , wavelength , path (computing) , multiplexing , shared resource , mesh networking , computer network , routing and wavelength assignment , algorithm , optics , telecommunications , physics , database , wireless
We present a new path protection algorithm, called resource sharing degree constraints (RSDCs), for survivable wavelength-divisionmultiplexing mesh networks. We define a parameter k to adjust the resource sharing degree (RSD). When we compute the reserved backup wavelengths, if the RSD is larger than the value of k, more wavelengths are assigned until the RSD is not greater than the value of k. With respect to previous work, RSDCs, adds a valuable elasticity in resource assignment and is able to determine the appropriate trade-offs between the resource utilization ratio and the protection ability.