He is known for his work on the theory and mathematical modeling of Internet congestion control, algorithms, and optimization in power systems.
[2][3] He and his research team designed a new congestion control algorithm called FAST TCP based on this mathematical theory,[4] built a unique testbed WAN-in-Lab and worked with high-energy physicists (HEP) at Caltech, CERN and around the world to break world records on data transfer.
His work is instrumental in changing the focus of congestion control research and land speed record contests from parameter tuning to algorithm design and analysis.
Through a startup called FastSoft, his team actively pursued the deployment of their research which has been accelerating the world's largest content distribution and social networks as well as other Fortune 500 companies.
Upon returning to Caltech after Fastsoft, his research began to focus on the control and optimization of distributed energy resources for future smart grids.