Modeling a new Startup Algorithm for TCP New Reno

Standard TCP (New Reno) is vulnerable to
startup effects that cause loss of connection setup packets or
result in long round trip time (RTT) greater than 1-second.
When either of these events occurs, TCP New Reno resets its
congestion state by reducing initial congestion window (IW)
and slow-start threshold (ssthresh) values to 1 and 2
maximum segment size (MSS) respectively. In this condition,
TCP requires multiple round trips to complete delaysensitive
transactions, thus resulting in poor userexperience.
This paper presents a new congestion control
algorithm that makes TCP more responsive by increasing its
robustness against startup losses. Our main contribution in
this paper is derivation of a stochastic model that yields a
simple expression for computing the latency of a short-lived
transaction as a function of IW, ssthresh and bandwidthdelay
product (BDP) of an uncongested link.