  The fifth-generation new radio (5G NR) technology is expected to provide
precise and reliable positioning capabilities along with high data rates. The
Third Generation Partnership Project (3GPP) has started introducing positioning
techniques from Release-16 based on time, angle, and signal strength using
reference signals. However, validating these techniques with experimental
prototypes is crucial before successful real-world deployment. This work
provides useful tools and implementation details that are required in
performing 5G positioning experiments with OpenAirInterface (OAI). As an
example use case, we present an round trip time (RTT) estimation test-bed based
on OAI and discusses the real-word experiment and measurement process.
