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In this chapter, we present a new scheme for traffic grooming in WDM mesh networks. We propose a new node architecture which brings together all the three qualities desired: practical feasibility, cost-effectiveness and efficient grooming capability. None of the models considered so far in the literature have managed to satisfy all three criteria. We achieve these three ideals by considering a combination...
Wavelength-division multiplexing (WDM) optical networks are characterized by maturity, high-capacity, agility, flexibility, and cost-efficiency. Today, optical transmission rates are increasing from 10 Gbit/s to 100 Gbit/s which increases the network's flexibility for capacity provisioning. We study the problem of dimensioning optical WDM networks under traffic growth. Particularly, we study link-rate...
In this paper, we consider reconfiguration of a wavelength division multiplexed (WDM) optical mesh network. Traffic generated by the higher layers is dynamic. This necessitates reconfiguration of the virtual topology for efficient utilization of resources. We consider reconfiguration with the objective of minimizing congestion. The reconfiguration of the virtual topology requires addition and deletion...
We study the optimal configuration of p-cycles in survivable wavelength division multiplexing (WDM) optical mesh networks with sparse-partial wavelength conversion while 100% restorability is guaranteed against any single failures. We formulate the problem as two integer linear programs (Optimization Models I, and II) which have the same constraints, but different objective functions. p-cycles and...
In this paper, we address the issue of traffic grooming in arbitrary WDM mesh networks. We present a novel groomer architecture wherein a combination of grooming at two different granularities is utilized to make the setup cost-effective without compromising on efficiency. We put forward an efficient algorithm for dynamic routing and wavelength assignment of sub-wavelength connections. We also propose...
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