PROJECT TITLE :
Optimal virtual slice composition toward multi-tenancy over hybrid OCS/OPS data center networks
Multi-tenancy could be a key feature of recent data centers. It allows for the existence of multiple independent virtual infrastructures, referred to as virtual slices, on high of the identical physical infrastructure, every of them specially tailored to the tenants' desires. In such a state of affairs, an optimal mapping of the virtual slices plays a capital role toward an economical utilization of the info center network resources, potentially saving prices for the information center owner. But, due to the increasing trend of bringing optics to information center networks, specific virtual slice mapping mechanisms accounting for the particularities of the optical medium (e.g., wavelength continuity constraint) should be investigated. For this, we tend to present an integer linear programming (ILP) model for optimally mapping a set of virtual slices from different tenants during a hybrid optical circuit switching (OCS)/optical packet switching (OPS) knowledge center network with the aim to minimize the required optical transponders to be equipped within the network. Additionally, we have a tendency to also present a light-weight heuristic for the cases in which the ILP model scalability is compromised. The benefits of the proposals are highlighted by benchmarking them against a pure OCS answer through in depth simulations.
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