A note on the performance of TCP over HSDPA

This paper investigates throughput and round-trip time modelling for TCP/IP operating over an HSDPA based UMTS network. Analytical models for TCP/IP's throughput, hybrid automatic repeat request and round-trip time, in droptail and RED router based environments, have been described. This analysis has been supported by NS-2 based simulations to obtain throughput and round-trip time for a wired-cum-wireless network scenario. The effect of round robin, maximum carrier to interference ratio and proportional fair throughput scheduling disciplines, on total cell throughput and round-trip time variations due to wireless part, have also been simulated.