Efficient Spectrum Sharing and Utilization for Emerging 5G Networks


Prof. Eryk Dutkiewicz
Macquarie University WiMed Research Centre
Macquarie University, Sydney, Australia

Abstract:

The growing demand for a wide range of wireless Internet applications ranging from high-definition immersive video to machine-to-machine (M2M) applications is putting extreme pressure on better utilisation of the available radio spectrum and is spurring research activities for 5G networks. To overcome the expected spectrum “famine” requires highly efficient radio spectrum management schemes with low complexity and high responsiveness to the changing network conditions. Several key technologies are being proposed for emerging 5G networks. These include massive MIMO, base station densification, use of heterogeneous networks and dynamic spectrum sharing. In this talk we overview these technologies and their potential for use in 5G networks. We then focus on dynamic spectrum sharing (DSS) which is regarded as an essential approach to regaining access to otherwise unused spectrum and it is considered an essential component in the development of 5G networks. DSS can be conducted at different time scales. Due to a potentially high cost of setting up the necessary infrastructure, initially the use of DSS may only be attractive to network operators over long time scales of months or years. This approach is currently taken in standards development activities as exemplified by the emergence of the Leased Spectrum Access concept. As the time scale of the operation of DSS decreases, the possibility for utilising more available spectrum holes increases. However, the shorter time scale brings with it challenges. Efficient decisions regarding the use of DSS require accurate knowledge of the spatial and temporal spectrum use in a geographical area of interest. This knowledge can be represented in Radio Environmental Maps (REMs) which need to be generated efficiently and accurately. As the deployment of DSS evolves from longer to shorter time scales of operation, an important design consideration is how to achieve this evolution in a seamless manner. In this presentation we give an overview of the DSS concept and its emergence in standards activities. We also present various approaches of REM generation for use with DSS and the architectural choices for achieving the seamless evolution of DSS.

About the Speaker:

Has over 25 years of industrial and academic research experience. He obtained his Bachelor of Electrical and Electronic Engineering from the University of Adelaide, Australia in 1988, his Master of Science in Applied Mathematics from the University of Adelaide, Australia in 1992 and his PhD (Telecommunications) from the University of Wollongong, Australia in 1996. From 1999 to 2004 he worked at Motorola Laboratories in Sydney where he managed a wireless research laboratory. During that time he was also deeply involved in the development of the popular WiFi technology. Since returning to academia in 2004 he has worked closely with industry partners including Motorola, Freescale, and Intel on projects involving wireless sensor networks, 4G and 5G mobile communications networks and medical wireless body area networks. He is currently the Director of a multi-disciplinary research centre: the Macquarie University WiMed Research Centre (http://www.mq.edu.au/wimed) that focuses on development of medical implant technologies. He is also the Director of the Wireless Communications and Networking Laboratory researching 5G technologies.

Prof. Dutkiewicz has held visiting professorial appointments at the Chinese Academy of Sciences, Shanghai Jiao Tong University, City University of Hong Kong and Coventry University in the UK. He is an author of over 180 research papers and several book chapters. His professional activities in recent years included participation on many International Steering Committees. He is the General Chair of BodyNets 2015 and IEEE VTC 2017-spring in Sydney.