Co-author: ChunSheng Xin, ECE Department, Old Dominion University, USA
The complicated spectrum environment, dynamic nature of spectrum bands, and diversified requirements on quality of services from multiple tiers of users require the radio of secondary users to be more powerful and intelligent to fully realize the potential of radio spectrum. Specifically, today’s cognitive radio needs to expand from a physical layer technology to a comprehensive network layer technology. We call this new paradigm network radio.
Network radio integrates critical components, including the spectrum access policies, security policies, network coexistence mechanisms, and incentive mechanisms. The access policy engine of the radio ensures that the spectrum sharing policies such as transmit power and channel vacation time are imposed. The security policies are imposed to effectively countermeasure attacks to either the radio device or the network. The coexistence mechanism ensures that the heterogeneous radio technologies and networks that use different technologies and architectures, and the multiple tiers of primary users and secondary users can harmoniously coexist or co-access at the same spectrum band, same time, and same location. With the incentive mechanisms, primary users are incentivized to cooperate in spectrum sharing, to grant spectrum access to secondary users.
Moreover, network radio is able to carry out the topology organization and adaptation, cross-layer optimization, and integrate new technologies to increase performance, such as MIMO and network coding.
Dr. Min Song served as Program Director with the NSF for four years from October 2010 to October 2014 and is currently the Chair of the Computer Science Department, and Professor of Computer Science and Electrical & Computing Engineering at Michigan Tech. For his outstanding leadership contributions to promote NSF's international program, Min received the prestigious NSF Director's award in 2012. Min’s research interests include design, analysis, and evaluation of wireless communication networks, network security, cyber physical systems, and mobile computing. Over the years, he has secured more than $2.2 million research funding from NSF, DOE, and NASA, and published more than 160 technical papers. Min was the recipient of NSF CAREER award in 2007.
Min's professional career comprises 26 years in industry, academia, and government. Over the course of his career, Min has held various leadership positions and gained substantial experience in performing a wide range of duties and responsibilities. As an NSF Program Director in the Division of Computer and Network Systems, Min initiated three new programs, including the Wireless Innovation between Finland and US (WiFiUS), and managed 11 programs in the field of wireless communications and wireless networking. He provided oversight for hundreds of communications and networking research and educational projects with a total funding budget of over $80 million. Min launched and served as Editor-in-Chief of two international journals. He also served as Editor or Guest Editor of 14 international journals, and as General Chair, Technical Program Chair, and Panel Chair for many conferences, including Panel Chair of INFOCOM 2015, TPC Vice-Chair of GLOBECOM 2015, and General Chair of INFOCOM 2016. Min is the Founding Director of a Computer Networking System Division in an IT company.
