NDLI: Routing and spare capacity assignment for scheduled and random lightpath demands in all-optical networks

Content Provider	IEEE Xplore Digital Library
Author	Koubaa, M. Puech, N. Gagnaire, M.
Copyright Year	2005
Description	Author affiliation: Dept. of Comput. Sci. & Networks, CNRS, Paris, France (Koubaa, M.; Puech, N.; Gagnaire, M.)
Abstract	In this paper we consider working and protection paths for scheduled and random lightpath demands in an optical transport network without wavelength conversion. As the network resources are limited, the objective is to minimize the rejection ratio. To achieve this goal, we use backup multiplexing techniques to minimize the spare resources required to ensure protection. Scheduled lightpath demands (SLDs) are connection demands for which the set-up and tear-down times are known in advance as opposed to random lightpath demands (RLDs) whose date arrival and holding times are not known in advance and that are established on the fly. We propose and implement two routing algorithms to deal with the routing and spare capacity assignment problem for scheduled and random lightpath demands. The former exploits the a priori knowledge of scheduled lightpath demands to compute the routing and spare capacity assignment for the SLDs before considering the RLDs. The latter considers all the demands simultaneously using a sequential algorithm that computes the routing and spare capacity assignment on the fly, that is, demand by demand. We compare the proposed algorithms in terms of the rejection ratio.
Starting Page	39
Ending Page	46
File Size	2001340
Page Count	8
File Format	PDF
ISBN	078038900X
DOI	10.1109/NGI.2005.1431645
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-04-18
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	All-optical networks Intelligent networks Processor scheduling Optical wavelength conversion Optical fiber networks Routing Superluminescent diodes Resource management Protection Joining processes
Content Type	Text
Resource Type	Article

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