NDLI: Segmented protection path provisioning for capacity optimization in WDM mesh networks

Content Provider	IEEE Xplore Digital Library
Author	Saradhi, C.V. Lian Kian Wei Gurusamy, M.
Copyright Year	2004
Description	Author affiliation: Inst. for Infocomm Res., Singapore, Singapore (Saradhi, C.V.)
Abstract	We consider the problem of routing and wavelength assignment (RWA) of segmented protection lightpaths in all-optical wavelength division multiplexing (WDM) networks under single link and node failures for static traffic demand. We develop integer linear programming (ILP) formulations for dedicated and shared segmented protection schemes under single link/node failure for static traffic demand with two different objective functions: (1) minimize the total capacity required for a given traffic demand while providing 100% protection for all the traffic demands; (2) given a certain capacity, maximize the number of demands accepted while providing 100% protection for accepted connections. The numerical results obtained from CPLEX indicate that shared segmented protection (SSP) provides significant savings (up to 41%) in capacity utilization over dedicated and shared end-to-end protection schemes; dedicated segmented protection (DSP) provides marginal savings (up to 39%) in capacity utilization over dedicated and shared end-to-end protection schemes. The numerical results also indicate that shared segmented protection achieves the best performance followed by dedicated segmented protection and shared end-to-end protection, w.r.t. the number of requests accepted, given the network capacity.
Starting Page	1775
Ending Page	1779
File Size	526198
Page Count	5
File Format	PDF
ISBN	0780387945
DOI	10.1109/GLOCOM.2004.1378287
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-11-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Protection Intelligent networks Wavelength division multiplexing WDM networks Mesh networks Telecommunication traffic Wavelength routing Wavelength assignment All-optical networks Optical buffering
Content Type	Text
Resource Type	Article

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