Title: Decentralizing 5G orchestration
Speaker: Francesca Fossati, Cedric/LIP6
Salle 33.1.19 – Cnam, 2 rue Conté
June 11, 2019 – 15h-16h
The 5G infrastructure brings as a key novelty in networked systems the need to deal with a new resource allocation unit, the so-called “network slice”. A network slice needs to serve end-to-end services so that it is a combination of different network and system resources, such as the radio resource, the link resource and a variety of computing resources (CPU, RAM, storage) – generally, each resource is managed by a distinct decision-maker, platform, provider. Naturally, centralized slice orchestration approaches have been proposed, where a multi-domain orchestrator allocates the resources, using a multi-resource allocation rule. Nonetheless, while simplifying the algorithmic aspects, centralization can come at the expense of scalability and performance. In this talk, we propose new ways to decentralize the 5G slice resource allocation problem, using cascade and parallel resource allocations. We provide an exhaustive analysis of the advantages and disadvantages of the different approaches. We do also adapt baseline approaches to be able to guarantee Service Level Agreements (SLAs). We conclude the work with a numerical analysis in a realistic environment. This work is in collaboration with Stéphane Rovedakis and Stefano Secci.
Francesca Fossati is currently a Ph.D. candidate at LIP6, Sorbonne Université, and Cedric, Cnam, Paris, France. She received her M.Sc. in Mathematical Engineering from Politecnico di Milano, Milan, Italy in 2015. Her current research interests are about optimization and game theory, with applications to network resource allocation problems. In particular, her current works are about multi-resource allocation in network slicing.