Modeling Finite Buffer Effects on TCP Traffic Over an IEEE 802.11 Infrastructure WLAN

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Executive Summary

The network scenario is that of an infrastructure IEEE 802.11 WLAN with a single AP with which several STAtions (STAs) are associated. The AP has a finite size buffer for storing packets. In this paper, the authors consider TCP-controlled upload and download file transfers between the STAs and a server on the wireline LAN (e.g., 100 Mbps Ethernet) to which the AP is connected. In such a situation, it is well known that because of packet losses due to finite buffers at the AP, upload file transfers obtain larger throughputs than download transfers.

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