Single User TCP Downstream Throughput Models in IEEE802.11g WLAN

Oghogho Ikponmwosa, Otuagoma S. O, Ufuoma Jeffrey Okieke, Ebimene E., Anamonye U.G, Oyubu A. O, Okpare A.O, Eyenubo O.J, Efenedo G. I, Okpeki K. U

Throughput, WLANs, Signal to noise ratio, IEEE 802.11g.

Single User Models for predicting transmission control protocol (TCP) downstream throughput in IEEE 802.11g wireless local area networks (WLANs) was developed for different signal to noise ratio (SNR) categories. Single User (TCP) downstream throughput data corresponding to different SNRs were collected using Tamosoft throughput test over a wide range of environments namely: open corridors, free space and small offices in IEEE802.11g WLANs. SNR was computed from received signal strength indication and noise floor data collected using inSSIDer 2.1 software. Different types of quality of service (QoS) traffic that correspond to different wireless multimedia tags were transmitted in the network between a server and a client. Two types of single user TCP downstream throughput models that can predict TCPdownT as a function of the SNR for different levels of signals were developed, validated and then compared with existing similar models. The first model was developed without data categorisation using SNR. The second model was developed by categorizing the field data into different signal categories (strong, grey and weak signals) which was then used to develop TCPT models for each signal category.

https://dx.doi.org/10.31873/IJEAS.9.05.08