GNSS is widely used for data transmission and synchronization, particularly in applications that merge recorded radar data and coordinate multiple nodes over the air. Accurate timestamping is crucial for ensuring data integrity, requiring a reliable and common time source. However, GNSS connectivity can be limited or entirely unavailable in certain environments, such as tunnels or urban canyons, posing a challenge for precise synchronization.

To address this, MLE is developing an innovative approach to synchronize two 5G User Equipment (UE) devices with microsecond-level accuracy. This solution leverages the PTPv2 High Accuracy (HA) profile, based on CERN’s White Rabbit technology, and builds upon the OpenAirInterface project.