The talk will give an overview of past, present, and hopefully also future research on Internet Transport Protocols in the so called TCP Paradigm. Protocols in the TCP Paradigm are based on a Congestion Window and have the source of a flow modify the congestion window in reaction to "One Bit Feedback" through acknowledgments. The feedback is through drop or marking (ECN) of packets. A class of mechanisms that translate drop or marking into congestion window evolution will be discussed. The class contains classical TCP as well as Tom Kelly's "Scalable TCP". The class is characterized by a more general class of "increase" and "decrease" functions. A major issue is choice of parameters describing those functions. Investigations into this issue is started by investigating the stochastic process that results when drop probability (or marking probability) is assumed to be constant. This analysis is used for a first cut in finding desirable combinations of parameter values. In ongoing work more dynamic behavior is analyzed. This relates to the speed of adaption to change, the rate of convergence to a stationary state for a new flow, and to the fact that the drop (or marking) probability is not constant.

Teunis (``Teun'') Ott (www.teunisott.com) studied Mathematics in The Netherlands and Operations Research in Rochester, NY. After teaching for a few years, he joined Bell Laboratories in 1978. He was with Bell Labs, Bellcore, and Telcordia until 2001. At Bell Labs , he was Member of Technical Staff, Supervisor and later Director of a Computer Performance group. From 2001 until 2006 he was with a local college. While at Bell Labs, Teun did and supervised analytical research but also started work on measurements that later led to long range dependence, heavy tailed behavior (first of CPU job sizes, then of Internet Traffic.) The last few years at Telcordia Teun worked on modelling of Transport Protocols, and recently it has become possible for him to get back to that research. In addition, Dr Ott has been doing work on modifying the Linux Kernel Networking code for various experiments such as Split TCP, sending IP packets with spoofed source address, traceback, etc.