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Instrumentation for measuring users’ goodputs in dense Wi-Fi deployments and capacity-planning rules
Wireless Networks ( IF 2.405 ) Pub Date : 2020-01-11 , DOI: 10.1007/s11276-019-02229-7
José Luis García-Dorado, Javier Ramos, Francisco J. Gomez-Arribas, Eduardo Magaña, Javier Aracil

Before a dense Wi-Fi network is deployed, Wi-Fi providers must be careful with the performance promises they made in their way to win a bidding process. After such deployment takes place, Wi-Fi-network owners—such as public institutions—must verify that the QoS agreements are being fulfilled. We have merged both needs into a low-cost measurement system, a report of measurements at diverse scenarios and a performance prediction tool. The measurement system allows measuring the actual goodput that a set of users are receiving, and it has been used in a number of schools on a national scale. From this experience, we report measurements for different scenarios and diverse factors—which may result of interest to practitioners by themselves. Finally, we translate all the learned lessons to a freely-available capacity-planning tool for forecasting performance given a set of input parameters such as frequency, signal strength and number of users—and so, useful for estimating the cost of future deployments.
更新日期:2020-01-13

 

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