Mobility

Understanding 802.11 Performance in Heterogeneous Environments

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Executive Summary

The availability of unlicensed spectrum coupled with the increasing popularity of wireless communication has given rise to a diverse range of wireless technologies that compete for spectrum. In particular, 802.11 devices face a host of problems such as interference with other 802.11 devices (hidden terminals) as well as with technologies like Bluetooth and ZigBee. Understanding how the medium is utilized and inferring the cause of interference, based on observations from a single wireless node, is hard. Past work has used monitoring infrastructures to detect interference between 802.11 nodes in enterprise networks.

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