Packet Loss Characterization in WiFi-Based Long Distance Networks

Download Now Date Added: Jan 2011
Format: PDF

Despite the increasing number of WiFi-based Long Distance (WiLD) network deployments, there is a lack of understanding of how WiLD networks perform in practice. In this paper, the authors perform a systematic study to investigate the commonly cited sources of packet loss induced by the wireless channel and by the MAC protocol. The channel induced losses that they study are external WiFi, non-WiFi and mulipath interference. The protocol induced losses that they study are protocol timeouts and the breakdown of CSMA over WiLD links. The results are based on measurements performed on two real-world WiLD deployments and a wireless channel emulator. The two deployments allow one to compare measurements across rural and urban settings.