Heuristics for Maximizing OEO Sharing in WDM Mesh Networks with Path-based Projection

K. Wang, H.S. Hamza, and J.S. Deogun (USA)


WDM Mesh Networks, Pathbased Protection, RWA Prob lem, OEO Regenerators.


In this paper, we address the problem of routing and wavelength assignment (RWA) in path-protected WDM networks with the objective of maximizing the sharing chances of wavelength links and optical-electronic-optical regenerators (OEOs) between demands, and hence, mini mize the overall cost of the network. Both a Tabu Search and a Genetic Algorithm heuristics are proposed and their performance is experimentally evaluated through extensive simulation. Our simulation results confirm an average of 30% reduction in the number of OEOs compared to that re quired with the well-known shared-path protection scheme.

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