On the Performance of an Indoor Open-Source 5G Standalone Deployment

5G, the latest generation of cellular technology,
targets not only enhanced data rates but also new applications
which require, e.g., ultra-reliable low latency communication.
Verticals like industrial automation or automotive, which want
to make use of this type of wireless services, need experimental
deployments to test the performance of 5G in various modes
and environments for their use cases. Due to the ongoing stan-
dardization process, experimental 5G networks based on open-
source frameworks are especially well suited, as they provide the
possibility to easily implement new features introduced by the
yearly 5G standard releases. We thus present an experimental
5G standalone deployment, based on the OpenAirInterface,
which is an open-source framework, that is being used both,
commercially and for academic purposes. We evaluate coverage
parameters including reference signal received power, reference
signal received quality, and signal to interference and noise ratio
both for single user and multiple user scenarios. The measured
downlink data rate reaches up to 390 Mbps at a bandwidth of
60 MHz, which is close to the achievable theoretical value. The
average latency both for uplink and downlink was measured to
be 19 ms for the round trip time, while the minimum latency
value was 6 ms, which is acceptable for many application.