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Kotikalapudi Sriram

Dr. Kotikalapudi Sriram holds B.Tech. (EE) and M.Tech. (EE) degrees from the Indian Institute of Technology in Kanpur, India, and a Ph.D. (EE) degree from Syracuse University, Syracuse, NY.

He is currently a senior research engineer in the Advanced Networking Technologies Division at the National Institute of Standards and Technology (NIST).

Previously he held various positions at Bell Laboratories – the Innovations arm of Alcatel-Lucent Technologies and formerly that of Lucent Technologies and also AT&T. His titles at Bell Laboratories included Consulting Member of Technical Staff (approximately the top 1% of all Bell Laboratories engineers) and Distinguished Member of Technical Staff.

His interests and responsibilities include performance modeling, network architecture and protocols, Internet routing protocol security, design of protocols and algorithms for multi-service broadband networks, broadband wireless access networks, congestion control algorithms, and cable modems. He is internationally known in the field of telecommunications networks for his early work on packetized voice and data networks. His work has had a major impact on the design and evolution of integrated voice and data networks. His patented inventions related to Quality of Service (QoS) management in integrated multi-service high-speed packet networks supporting diverse traffic types are highly regarded and ubiquitously used in commercial gigabit packet routers and Internet Protocol (IP) routers and Asynchronous Transfer Mode (ATM) switches, including those developed at Bell Laboratories. Sriram is also well known in broadband-cable data access technology for his pioneering contributions to the design and performance analysis of Medium Access Control (MAC) protocols for Hybrid Fiber-Coax (HFC) networks and cable modems. His inventions providing improved bandwidth efficiency and QoS are ubiquitously used in cable modems. He is a co-inventor on a patent related to QoS management for Voice over IP (VOIP) that was recognized by the MIT Technology Review Magazine as one of five Killer Patents, picked from over 150,000 patents granted in the U.S. in 2003. Dr. Sriram has published over sixty papers in various IEEE and other international journals and major conferences. He holds eighteen patents. He is a contributing author and a coeditor of Cable Modems: Current Technologies and Applications, published by the IEEE Press and the International Engineering Consortium (IEC).

Recent Publications

List of Publications





Sriram Kotikalapudi_small


Senior Research Engineer
Advanced Network Technologies Division

Phone: (301) 975-3973
Fax: (301) 975-6238