Radhika Ranjan Roy has been an electronics engineer, United States Army Research, United States
Command, Control, Communications, Computers, Combat Systems, Intelligence, Surveillance,
and Reconnaissance (C5ISR)-S&TCD Laboratories (previously known as CERDEC), Aberdeen
Proving Ground (APG), Maryland, United States since 2009. Dr. Roy is leading research and development
efforts in the development of scalable large-scale SIP-based VoIP/Multimedia networks and
services, cybersecurity, artificial intelligence and machine/deep learning (AI/ML/DL) architecture,
mobile ad hoc networks (MANETs), Peer-to-Peer (P2P) networks, cybersecurity detecting application
software and network vulnerability, jamming detection, supporting an array of the Army/
Department of Defense's Nationwide and Worldwide Warfighter Networking Architectures and
participating in technical standards development in Multimedia/Real-Time Services Collaboration,
IPv6, Radio Communications, Enterprise Services Management, and Information Transfer of
Department of Defense (DoD) Technical Working Groups (TWGs). He received his PhD in Electrical
Engineering with Major in Computer Communications from the City University of New York
(CUNY), NY, United States in 1984 and his MS in Electrical Engineering from the Northeastern
University, Boston, MA, United States in 1978. He received his BS in Electrical Engineering from
the Bangladesh University of Engineering & Technology (BUET), Dhaka, Bangladesh in 1967. He
was born in the renowned country town of Derai, Bangladesh.
Prior to joining CERDEC, Dr. Roy worked as the lead system engineer at CACI, Eatontown,
NJ from 2007 to 2009 and developed Army Technical Resource Model (TRM), Army Enterprise
Architecture (AEA), DoD Architecture Framework (DoDAF), and Army LandWarNet (LWN)
Capability Sets, and technical standards for Joint Tactical Radio System (JTRS), Mobile IPv6,
MANET, and SIP, supporting Army Chief Information Officer (CIO)/G-6. Dr. Roy worked as senior
system engineer, SAIC, Abingdon, MD from 2004 to 2007, supporting Modeling, Simulations,
Architectures, and System Engineering of many Army projects: WIN-T, FCS, and JNN.
During his career, Dr. Roy worked in AT&T/Bell Laboratories, Middletown, NJ as senior consultant
from 1990 to 2004 and led a team of engineers in designing AT&T's Worldwide SIP-based
VoIP/Multimedia Communications Network Architecture, consisting of wired and wireless, from
the preparation of Request for Information (RFI) to the evaluation of vendor RFI responses and
interactions with all selected major vendors related to their products. He participated in and contributed
to the development of VoIP/H.323/SIP multimedia standards in ITU-T, IETF, ATM, and
Frame Relay standard organizations.
Dr. Roy worked as senior principal engineer in CSC, Falls Church, VA from 1984 to 1990 and
worked in the design and performance analysis of the US Treasury nationwide X.25 packet-switching
network. In addition, he designed many network architectures of many proposed U.S. Government
and Commercial Worldwide and Nationwide Networks: Department of State Telecommunications
Network (DOSTN), U.S. Secret Service Satellite Network, Veteran Communications Network, and
Ford Company's Dealership Network. Prior to CSC, he worked from 1967 to 1977 as deputy director,
Design, in PDP, Dhaka, Bangladesh.
Dr. Roy's research interests include the areas of artificial intelligence, machine/deep learning,
blockchain cloud and fog computing, mobile ad hoc networks, multimedia communications, peer-topeer
networking, and quality-of-service. He has published over 60 technical papers and is holding or
pending over 35 patents. He also participates in many IETF working groups. Dr. Roy authored three
books Handbook on SDP for Multimedia Session Negotiations: SIP and WebRTC Telephony (CRC
Press/Taylor & Francis, 2018), Handbook on Session Initiation Protocol: Networked Multimedia
Communications for IP Telephony (CRC Press/Taylor & Francis, 2016), and Handbook of Mobile
Ad Hoc Networks for Mobility Models, Springer, 2010. He lives in the historical district of Howell
Township, New Jersy, with his wife Jharna.
