  The anticipated densification of contemporary communications infrastructure
expects the use of drone small cells (DSCs). Thus, we experimentally evaluate
the capability of providing local and personalized coverage with a drone
mounted Wi-Fi access point that uses the nearby LTE infrastructure as a
backhaul in areas with mixed line of sight(LoS) and Non-LoS (NLoS) links to the
local cellular infrastructure. To assess the potential of DSCs for reliable and
low latency communication of outdoor users, we measure the channel quality and
the total round trip latency of the system. For a drone following the ground
user, the DSC-provided network extends the coverage for an extra 6.4% when
compared to the classical LTE-direct link. Moreover, the DSC setup provides
latencies that are consistently smaller than 50 msfor 95% of the experiment.
Within the coverage of the LTE-direct connection, we observed a latency ceiling
of 120ms for 95% reliability of the LTE-direct connection. The highest latency
observed for the DSC system was 1200ms, while the LTE-direct link never
exceeded 500 ms. As such, DSC setups are not only essential in NLoS situations,
but consistently improve the latency of users in outdoor scenarios.
