IEEE 802.1AS-based time synchronization for in-vehicle Ethernet networks.
gPTP
generalized Precision Time Protocol
gPTP stands for generalized Precision Time Protocol and is the time synchronization method for TSN domains defined in IEEE 802.1AS. It synchronizes Ethernet endpoints and switches to a common time base with high precision and low overhead. In automotive data logging architectures, gPTP is crucial because it enables common timestamps across multiple sensors, buses, and loggers.