TCP-controlled Long File Transfer Throughput in Multirate WLANs with Nonzero Round Trip Propagation Delays

TL;DR

This paper develops an analytical model to predict TCP-controlled long file transfer throughput in multirate WLANs with nonzero propagation delays, validated by simulations showing high accuracy.

Contribution

It extends previous models to include multirate WLANs with propagation delays, providing a closed-form analytical approach for throughput prediction.

Findings

Model accurately predicts TCP throughput in multirate WLANs.

Inclusion of propagation delays improves real-world applicability.

Simulation results closely match analytical predictions.

Abstract

In a multirate WLAN with a single access point (AP) and several stations (STAs), we obtain analytical expressions for TCP-controlled long file transfer throughputs allowing nonzero propagation delays between the file server and STAs. We extend our earlier work in [3] to obtain AP and STA throughputs in a multirate WLAN, and use these in a closed BCMP queueing network model to obtain TCP throughputs. Simulation show that our approach is able to predict observed throughputs with a high degree of accuracy.