In the past/present I have worked on several topics in design and control of communication networks including congestion control, design and evaluation of AQM schemes, Traffic Engineering, Quality of Service, managing selfish behavior in the Internet, modeling and performance analysis of network protocols and mobile and wireless networks.

A slightly outdated resume is here and my publications/talks/dissertations can be found here.

My dissertation focuses on finding end-and-edge-system frameworks for emulating the beneficial properties of AQM on a network of Drop Tail queues. As a part of this research I have proposed an edge based controller for managing aggressive or non-cooperative sources in the Internet. This work increases fairness, provides congestion response conformance (like TCP Friendliness) and prevents traffic-volume based denial of service attacks, in a non-cooperative congestion control framework, i.e. end users are allowed to choose arbitrary congestion control schemes. Also, as a part of my thesis I have proposed Randomized TCP to emulate many beneficial properties of AQM, on a network of Drop Tail queues. Currently, I am working on ways to regulate bottleneck queues from the network edge or end-system.

Last summer (2003) I was an intern with Networking Research Department at AT&T Labs - Research and worked on inter- domain Traffic Engineering. Previously, (summer 2002) I worked with Mistral group at INRIA (Sophia Antipolis, France) where I framed TCP as a Non-Linear Complementarity Optimization Problem and found conditions under which this problem has unique solution. This research allows us to uniquely identify bottlenecks in the network and their steady state loss rates. This work also shows how the various optimization frameworks in networks, esp Utility Maximization, Fixed Point solutions, etc are related, and how they can be derived from each other. Previously, in 2000, I did my summer internship at IP Services and Infrastructure Group, Qwest Communications, Denver and worked on QoS models for Qwest, design of their multicast architecture and security issues with VPN.

And some of my favorite poems, dictionary of Ambrose Bierce and an old pic of mine.
I am also associated with the AID's RPI Chapter. For more information about AID-Troy and its activities click here.


** If you are looking for information about admissions/aid to ECSE, RPI look at this note. If you are interested in working in Networks Lab, please read this note written by Prof Shiv.

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