Protocol design, evaluation, and optimization. Combining analytical models and results with computation and simulation tools.

· Developed Network-Centric Eco-Logic to reduce IT energy consumption

- PI NSF Improving Internet Incentives (Economics of Internet: Network Neutrality, Service Differentiation and Pricing, Economics of Security)- PI MURI Analysis and Design of Complex Networks (Tools for Optimizing Network Designs and Protocols)- Co-PI MURI Multi-Level Multi-Resolution Games (Strategic Behavior of Networked Agents)· Designed distributed throughput-optimal protocols for wireless networks· Developed revenue allocation scheme for Internet transport providers· Developed quick simulation methods for queuing networks· Introduced virtual buffer techniques for faster estimations of link utilization· Developed effective bandwidth theory for large buffers· Designed adaptive sampling approach for traffic measurements· Thesis advisor for 24 PhDs and a similar number of MS students· Co-authored over 140 publications and conference presentations, and 6 books· Developed the first undergraduate networking course at Berkeley

· Designed and developed scalable switching technology; multiple patents· Company acquired by Agere

· Designed and developed technology for QoS over Ethernet; multiple patents· Company acquired by Extreme Networks

Research and teaching in networking

· Applied martingale theory of point processes to derive generalized insensitivity results for queuing systems· Derived product-form results for interacting Markov chains· Solved causal coding problems· Solved optimal control problems for queues in tandem