Benefits of Programmability in 5G Transport Networks

Abstract

This paper shows how programmability can improve operators' revenues and it presents a dynamic resource slicing policy that leads to more than one order of magnitude better resource utilization levels than convectional (static) allocation strategies.

Dynamic programming of network slices in software-defined metro-core optical networks

“…The problem of VNF placement and traffic routing for SFC provisioning has been the subject of deep investigation in the last years. [6] proposes an optimization model for the minimization of wavelengthresource usage during a defined period of time. For each experiment they randomly place the VNFs in the network and inject traffic according to a day/night profile.…”

“…This implies that the allocated resources should support the peak service requirements. In dynamic slicing the amount of resources allocated to a virtual network varies according to the actual service needs [6].…”

Reinforcement Learning for Service Function Chain Reconfiguration in NFV-SDN Metro-Core Optical Networks

“…The problem of VNF placement for NS and traffic routing for SFC provisioning has been subject to deep investigation in the last years, especially in static settings, such as under a static traffic assumption. Reference [5] proposed an optimization model for the minimization of wavelength-resource usage during a defined period of time. For each experiment they randomly placed the VNFs in the network and inject traffic according to a day/night profile.…”

“…We show the general framework of the multi-layer network considered in this work, along with an example of how two SFCs are mapped into the service, IP/MPLS and optical network layer. allocated to an SFC varies according to the actual service needs [5].…”

Priority-Aware Service Orchestration Using Big Data Analytics for Dynamic Slicing in 5G Transport Networks

“…Using SDN, it is possible to allocate a portion of the end-to-end network resources to each tenant, i.e., a concept also referred to as slicing. In order to improve the network resource utilization, the slice assigned to a tenant can be dynamically adjusted based on the temporal and/or spatial variation of the tenant's service requirements 1 . We recently presented a proof of concept of dynamic slicing in a multipurpose transport network with a simple first-come-first-served (FCFS) orchestration policy…”