Transfer Delay Analysis of WAP 2.0 for Short-Lived Flows

In this paper, an analytical framework for studying the transfer delay of wireless application protocol (WAP) 2.0 for short-lived flows is developed based on a two-state Markov chain that approximates both correlated and independent packet losses. For a given wireless link and protocol parameters, an explicit mathematical expression which yields a good estimate of the WAP 2.0 transfer delay is derived. The analytical results are validated by simulation. It is shown that for large file sizes (> 30 kB), WAP 2.0 is more sensitive to bursty packet losses than random packet losses. It is also shown that the transfer delay of WAP 2.0 can be improved by increasing the size of the initial window in a low-rate bursty error environment but degrades in a high-rate bursty error environment