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some fundamental problems to be
solved, including the establishment
of new test specifications, the exploration of 5G measurement principles and the development of new
This work was supported by the
National Natural Science Foundation of China (61627801) and
China National S&T Major Project
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network equipment test requires
general instruments, such as a VSG,
spectrum analyzer, power meter,
UE emulator and channel emulator
to build a massively connected test
system with broad coverage. The
aim is to test the load capacity limit
and overload coordination capabili-
ties of specific uplink and downlink
service models and to evaluate sys-
tem performance under different
channel conditions. In the future,
these test instruments must follow
corresponding 5G test specifica-
tions with continuous optimization
and upgrade capability, satisfying
the performance needs of 5G and
supporting a wider range of appli-
Driven by considerable market
demand, 5G test has made rapid
progress. Top instrument suppliers
around the world are working closely
with universities and other research
institutions. The entire industry is
inspired by recent research achievements and products. Still, there are