Function splitting, isolation, and placement trade-offs in network slicing

Wesley da Silva Coelho (1, 2) , Amal Benhamiche (1) , Nancy Perrot (1) , Stefano Secci (2)

1 Orange Labs
2 CEDRIC - ROC - CEDRIC. Réseaux et Objets Connectés

We model the network slice provisioning as an optimization problem including novel mapping and provisioning requirements rising with new radio and core function placement policies. We propose an open-access framework based on an MILP formulation that encompasses flexible functional splitting, with possibly different splitting for different slices and slice subnets, while taking into account different network sharing policies from 5G specifications. We also consider novel mapping and continuity constraints specific to the 5G architectures and beyond. We show by numerical simulations the impact of taking into full and partial consideration these peculiar novel technical constraints.

Mots clés: Network slicing; functional split; sharing policy

Domaines: Réseaux et télécommunications [cs.NI]

Wesley da Silva Coelho, Amal Benhamiche, Nancy Perrot, Stefano Secci. Function splitting, isolation, and placement trade-offs in network slicing. IEEE Transactions on Network and Service Management, 2022, 19 (2), pp.1920-1936. ⟨10.1109/TNSM.2021.3130915⟩. ⟨hal-03453352⟩