Tutorial: New Directions In Technology Innovations for 5G and Beyond

Instructor: Dr. Sudhir Dixit, Life Fellow IEEE, Senior Fellow and Evangelist, Basic Internet Foundation & Board Member, Wireless World Research Forum

Duration: 1 Hour


This tutorial aims to highlight the major advances in technologies that will enable 5G meet its objectives.

It is well recognized that the need for fast access to information and data forms an integral part of life in the present day “digital world”. The availability of “fast, uniform, reliable and cost effective” connectivity anywhere, anytime for (human) users on the move is essential for enabling the ultimate user experience in web browsing and audio & video streaming. Applications around Machine to Machine (M2M) communications and Internet of Things (IoT) would further enhance the user experience by exploiting the very large volumes of data generated by communication “users” such as sensors and actuators. Advances in signal processing, RF communications, and front-haul/backhaul are poised to be significant enablers. In addition to applying the traditional approaches to above technologies, the accelerating trends in leveraging virtualization, SDN, cloud computing, and analytics are being explored to support/improve flexibility, reduction in CAPEX and OPEX, scalability, time-to-market, and energy efficiency.

The foremost requirement of 5G wireless and mobile communication networks is the ability to support transmission speeds of the order of 100s of Mb/sec to 1Gb/sec (at times with very low latency). The networks of future (towards 2025) would be required to cater for an overall 1000x capacity increase in comparison to the systems deployed during the earlier part of the present decade. These objectives will be achieved through the introduction of new technologies both in Radio Access Networks (RAN) and in Core Network (CN). Additionally, judicious combinations of new 5G technologies and enhanced versions of the present 3GPP (LTE Advanced) and IEEE 802.11 technologies would prove useful in efficiently meeting the above requirements. With the deployment of mixed cell sites (from short range to long range), front-haul and back-haul access architectures will likely undergo major transformations. Furthermore, implementation of these technologies in software on general purpose hardware as opposed to custom hardware will play a major role to reduce cost, increase flexibility, and improve overall quality of experience (QoE). In addition, solutions for (at least) partial fulfillment of the goals of 5G will be based on intensive utilization of un-licensed spectrum (in < 6GHz band) and on harnessing new spectrum, e.g., in the mmWave bands. Several techniques enabling the simultaneous usage of licensed and unlicensed spectrum bands have been proposed/standardized in the recent past.

Course Detail

Description of major new RAN technologies for 5G systems will be presented. This will be followed by introduction to how a combination of licensed and unlicensed band will jointly deliver the expected performance. This includes an overview of LAA, LWA, LWIP, and eLWA technologies. The third section of the presentation will discuss the future core network technologies and the resulting flexible network architecture solutions leveraging the confluence of IT and telecommunications. More specifically, this part will go into the details of virtualization and SDN by covering such topics as the benefits of virtualization, consideration of planning and deployment of a 5G eco-system, potential architectures and ecosystems, standards activities targeting the 5G systems, and some selected use cases of (and roadmap towards) NFV deployments.  After a brief introduction to advances in front- haul/backhaul access, we will discuss how high capacity networks can benefit from SDN/NFV techniques and cloud network architecture. This course will conclude with a brief description of open research and technology challenges for implementation of future generation networks.


Dr. Sudhir Dixit is a Senior Fellow and Evangelist of Basic Internet at the Basic Internet Foundation in Norway and heads its San Francisco office. From December 2013 to April 2015, he was a Distinguished Chief Technologist and CTO of the Communications and Media Services for the Americas Region of Hewlett-Packard Enterprise Services in Palo Alto, CA, and prior to this he was the Director of Hewlett-Packard Labs India from September 2009. Prior to joining HP Labs Palo Alto, Dixit held a joint appointment with the Centre for Internet Excellence (CiE) and the Centre for Wireless Communications (CWC) at the University of Oulu, Finland. From 1996 to 2008, he held various positions with leading companies, such as with BlackBerry as Senior Director (2008), with Nokia and Nokia Networks in the United States as Senior Research Manager, Nokia Research Fellow, Head of Nokia Research Centre (Boston), and Head of Network Technology (USA) (1996-2008). From 1987 to 1996, he was at NYNEX Science and Technology and GTE Laboratories (both now Verizon Communications) as a Staff Director and Principal Research Scientist.

Dixit has 21 patents granted by the US PTO and has published over 200 papers and edited, co-edited, or authored eight books published by Wiley, Artech House and Springer. He is presently on the editorial boards of IEEE Spectrum Magazine, Cambridge University Press Wireless Series and Springer’s Wireless Personal Communications Journal and Central European Journal of Computer Science (CEJS). He is Chairman of the Working Group C on new directions in networking and communications at the Wireless World Research Forum (WWRF), where he is also a Board Member. From 2010 to 2012, he was an Adjunct Professor of Computer Science at the University of California, Davis, and, since 2010, he has been a Docent of Broadband Mobile Communications for Emerging Economies at the University of Oulu, Finland. A Life Fellow of the IEEE, IET, and IETE, Dixit received a Ph.D. degree in electronic science and telecommunications from the University of Strathclyde, Glasgow, U.K. and an M.B.A. from the Florida Institute of Technology, Melbourne, Florida.