SDN Controller Requirements for Next Generation Telco PaaS

This paper presents an analysis of requirements to Software Defined Network (SDN) Controllers (SDNC), from the point of view of the Telco's Next Generation Platform as a Service (NGPaaS) functional and architectural needs. Numerous requirements have been identified, which can be grouped in 4 categories: domain-based, modularity-based, related to the SDN and Network Function Virtualization (NFV) integration and finally policy-based. These requirements are later mapped into the ONOS SDN controller, with the scope of identifying possible gaps and points of improvement.