In this talk I am going to present an overview of some my
recent research activities in wide-area wireless networks.
Unlike in traditional wired and wireless IP-based networks,
applications running over wide-area wireless (WWAN)
environments are significantly affected by the vagaries
of the cellular wireless link. Prior research has proposed
and analyzed optimizations at individual layers of the protocol
stack that improve application performance. In the first
part of the talk I will present a detailed experiment-based
evaluation and comparison of a wide selection of such
optimization techniques in commercial WWAN environments.
                                                                                
In the second part of this talk I will introduce a new architecture,
called MAR, that leverages available diversity in the wireless
environment to improve application performance. We have
designed and implemented a prototype MAR system.
Finally I will conclude by highlighting some of our ongoing
research efforts.



Suman Banerjee (suman@cs.wisc.edu)
is an Assistant Professor in the Department of Computer Sciences
at the University of Wisconsin-Madison, USA. He received the PhD and
MS degrees in Computer Science from University of Maryland
College Park, USA and the BTech degree in Computer Science and
Engineering from IIT Kanpur, India. His research interests are
in the areas of networking and distributed systems --- P2P/overlays,
mobile and wireless networking, network measurements, etc.