Clock Synchronization Accuracy over Mobile Networks

Dataset: Clock Synchronization Accuracy over Mobile Networks

This dataset evaluates time synchronization accuracy between two devices operating in different mobile network environments and setups. The synchronization is achieved using Precision Time Protocol (PTP) version 2 (PTPv2) over the User Plane within the mobile network.

The dataset includes two types of clock offset data:

Calculated Offset:
This data is extracted from the PTPd software logs on the Slave device. Specifically, the "Offset From Master" section in the log files provides the value (in seconds) representing how much the Slave device's internal clock was adjusted to align with the Master clock. However, this value does not represent the exact offset from the Master clock. Instead, it is derived from the PTPv2 synchronization process and reflects the clock adjustment calculated during synchronization.

Pulse-Per-Second (PPS) Offset:
The PPS offset represents the most accurate measurement of clock offset between two devices. It is obtained using an Analog Discovery 2 oscilloscope, which directly compares the PPS signals generated by the Network Interface Card (NIC) timers of both devices. This method provides a high-precision measurement of the synchronization accuracy.

Dataset Structure
Each folder in the dataset contains:

Clock offset data: Organized by type (Calculated or PPS).
Setup schematics: Detailed diagrams illustrating the complete clock synchronization setup used for data collection.

Additional Information

The data in the folder titled "Clock offset (Pulse-per-second offset) over private 5G SA mobile network" is further described in the following scientific publication:

"Clock Synchronization and Network Delay Evaluation over a Private 5G Standalone Network"
Authors: Marcis Kalnins, Artis Rusins, Atis Elsts.