Sciweavers

Share
BROADNETS
2007
IEEE

Dedicated path protection for waveband switching in WDM networks (invited paper)

9 years 17 days ago
Dedicated path protection for waveband switching in WDM networks (invited paper)
— This paper considers the problem of dedicated path-protection in a wavelength-division multiplexing (WDM) mesh network with waveband switching (WBS) functionality under shared risk link group (SRLG) constraints. Two protection schemes are proposed, namely the Protecting-waveBandAt-waveBand-Level-only (PBABL) and the Mixed-Protection-AtwaveBand-and-Wavelength-Level (MPABWL). The PBABL protects each working waveband-path by a backup wavebandpath. While the MPABWL protects each working wavebandpath by either a backup waveband-path or multiple backup lightpaths. The performances of the two protection schemes in terms of gained revenue and cost saving are studied and compared. Integer linear programming (ILP) formulations are presented to solve the problems for each protection scheme. Numerical results of the ILPs and the experimental results of previously proposed heuristics are presented, which show that both heuristics can obtain optimum solutions. According to the results, under hea...
Mengke Li, Byrav Ramamurthy
Added 02 Jun 2010
Updated 02 Jun 2010
Type Conference
Year 2007
Where BROADNETS
Authors Mengke Li, Byrav Ramamurthy
Comments (0)
books