Transport

My work on transport protocols involves solutions to the problem of transmitting (possibly real-time) content reliably and in a congestion-sensitive manner to a heterogeneous set of clients. My main contributions include:

• Wireless Transport: hiding the peculiarities of the error-prone wireless medium from unicast flows serving wireless/mobile users. This transparency is achieved by hiding the ``time'' spent by the access point in local recovery.
• Reliable Multicast: client-initiated requests for encoded content so as to hide the unreliability of the network in a scalable way. Real-time content is staged on proxy servers, and a client listens to as many servers as needed to meet its own deadline.
• Congestion-friendly Transmission: congestion-sensitive transmission region that satisfies diverse transport requirements of applications. This new region is obtained by augmenting traditional window-based transmission control with minimal history information.

 

 

The following paragraphs describe these findings, obtained with my students and collaborators, in more detail.