Dynamic Network Slicing Based on Tidal Traffic Patterns in Metro-Core Optical Networks

Nowadays networks are the basis of our communication providing a great number of services. As a consequence, the number of networks is increasing as well as the traffic routed over them. There is an increasing demand for new services that require stringent constraints on capacity, latency and jitter to provide an appropriate Quality of Service (QoS) to end users. In order to cope with those requirements, network infrastructure needs to evolve from a static and closed architecture towards a more scalable, dynamic and agile one. SDN and NFV allows to provide different services, each one with its own QoS constraints, independent and secure, thanks to the network slicing concept, the main subject of this work. Network slicing allows to segment the underlying physical network into different logical networks to provide data transport customized to specific services. In this paper, we propose and early stage work with the aim to provide two mathematical models able to dynamically provision network slices on the physical network, complying with their QoS and reducing the power consumption for their instantiation and routing of traffic.