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S. Homayouni, V. Raida, P. Svoboda, M. Rupp:
"The Impact of Duration and Settings of TCP Measurements on Available Bandwidth Estimation in Mobile Networks";
Talk: IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), Montreal, QC, Canada; 10-08-2017 - 10-13-2017; in: "Proceeding of the 28th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE PIMRC 2017)", Canada (2017), 5 pages.

Today, crowdsourcing applications distribute
the task of performance measurements in mobile networks
over various mobile users to achieve an accurate benchmark.
A common measurement methodology is an application
on the customers´ phones which injects probe packets
into the network under test and derives estimates for
selected network properties such as available bandwidth.
Bandwidth measurements in cellular wireless networks,
which are highly dynamic and offer only shared resources,
are in general a resource demanding task. Current methods
deploy tests of constant duration running data transfers
over TCP. Their resource consumption scales directly with
the available capacity of the link. In this work we take
a closer look at the different chosen test durations and
analyze the trade-off between accuracy and resources spent
in various different configurations, e.g., numbers of parallel
TCP connections, based on extensive measurements in real
world operational LTE and UMTS networks conducted in
2016, Austria. In our experiments a minimum measurement
duration of six seconds allows for estimating available
bandwidth with an average error of less than 1%.

available bandwidth estimation, mobile networks, TCP, thread, test duration, CMPT