Method and system for performing time-synchronization between units of a communication bus system

A system for performing time-synchronization between a master clock of a master unit and a plurality of slave clocks of a corresponding plurality of slave units within a communication bus system, wherein the system is configured to:

• send a forward time-synchronization message indicative of the master clock from the master unit to the plurality of slave units, in order to enable the plurality of slave units to time-synchronize their respective slave clocks with the master clock;
• receive a reverse time-synchronization message indicative of the respective slave clock from each of the plurality of slave units at a first validator;
• time-synchronize a plurality of validator clocks of the first validator to the corresponding plurality of slave clocks, respectively, using the reverse time-synchronization messages from the plurality of slave units;
• and
• validate the time-synchronization between the plurality of slave clocks at the first validator based on the plurality of validator clocks of the first validator,
• wherein the plurality of validator clocks of the first validator are implemented in a corresponding plurality of different time domains of a Synchronized Time-Base Manager of an AUTOSAR standard.