Application Of Sdn-Based Orchestration For The Automated Deployment Of Fixed And Mobile Convergent Services In Future 5G Networks
Ricardo Martínez, Arturo Mayoral, Manuel Requena, Baldo, Nicola, Ricard Vilalta, Ramon Casellas, Marco Miozzo, Raül Muñoz, Josep Mangues‐Bafalluy · Zenodo (CERN European Organization for Nuclear Research) · 2016
Expected 5G services are forcing network operators to redesign some of the nowadays infrastructures to cope with the increased demand of data rate as well as the stringent necessities in terms of low latency, high availability, cost- and energyefficiency, etc. In this context, fixed mobile convergence (FMC) is envisioned as a key approach to support such requirements with a reduced total cost ownership (TCO). ICT COMBO project aims at exploring effective architectures for FMC. One of the devised solutions is the Universal Access Gateway (UAG) where a number of access technologies (e.g., fixed, Wi-Fi and mobile) are commonly terminated at the IP layer within the UAG. The UAG can be deployed at various network locations:distributed towards the access segment (at the main Central Office – CO) or centralized towards the backbone infrastructure (coreCO). In both approaches, the UAG architecture leverages the networking trends fostered by both SDN and NFV concepts. The goal of this paper is to make the mobile and transport network layers work in a coordinated way towards an automated deployment of mobile services on top of multi-layer transport networks. This is done through two main components. First, we implement a SDN orchestrator to provide a unified control system for the automatic coordination and control of a multi-layer (packet and optical) aggregation network. And second, the mobile core is slightly modified to interact with the SDN orchestrator so that the creation of a new bearer triggers the creation of an associated transport connection, which is requested through the northbound API of the orchestrator. The SDN orchestrator is validated in a proof-of-concept where a new mobile service being established triggers the automatic configuration of the aggregation network to enable the end-to-end connectivity between the cell sites and the mobile core network placed at the UAG.