Luis M. Contreras
Luis M. Contreras completed a six-year Telecommunications Engineering degree at the Universidad Politécnica de Madrid (1997), and holds an M. Sc. in Telematics from the Universidad Carlos III de Madrid (2010). In 1997, he joined Alcatel in Spain taking several positions (R&D, standardization, product development and customer engineering) in both wireless and fixed network fields. In 2006, he joined the Network Planning Department of Orange in Spain (France Télécom group) taking responsibilities on the IP backbone and mobile packet core planning. Between 2002 and 2010, he was also adjunct lecturer (part time) at the Telematics Department of the Universidad Carlos III, where he is currently a Ph.D. student. Since August 2011, he is part of Telefónica I+D / Telefónica Global CTO unit, working on SDN, transport networks (mainly IP and backhaul) and their interaction with cloud and distributed services. He has participated on the EU FP7 projects GEYSERS and XIFI, and he is now involved in the EU H2020 projects XHAUL and 5GEx, and the ESA funded project CloudSat. In July 2012, he co-organized the International Workshop on Cross-Stratum Optimization for Cloud Computing and Distributed Networked Applications, co-located with the 10th IEEE International Symposium on Parallel and Distributed Processing with Applications (ISPA 2012), Leganés, Spain. He has published 30+ papers, and he is active contributor to IETF (authoring two RFCs), ONF and GSMA. Very recently, in October 2015, he has coordinated the first-ever PoC on SDN for Wireless Transport networks in the framework of ONF.
Operational, organizational and business challenges for network operators in the context of SDN and NFV
Traditional operators deploy and operate telecom networks that rely on monolithic network elements that incorporate distinct network functions and implemented with a vertical integration of control and data planes. This mode of operation is transitioning towards a new situation where the control plane is separated from the data plane, and the network functions are no longer tightly bound to specific elements in the network. The two paradigms pushing in that direction are Software Defined Networking (SDN) and Network Functions Virtualization (NFV). This paper presents a number of challenges that traditional network operators must adapt to during this transition. We categorize these challenges using three important dimensions for telecom operators: operation, organization and business.