Method for time distribution in a communication network of a vehicle, and communication network

A method for time distribution in a communication network of a vehicle, the communication network including:

• a grandmaster with a grandmaster clock;
• a first slave connected directly to the grandmaster and including a first slave clock;
• and
• a second slave connected indirectly via the first slave to the grandmaster and including a second slave clock;
• the method comprising:
• sending, from the grandmaster to the first slave, a first time stamp taken from the grandmaster clock;
• generating, at the first slave, a first time tuple including the received first time stamp of the grandmaster clock and a second time stamp taken from the first slave clock at a time of receiving the first time stamp;
• sending, from the first slave to the second slave:
• a third time stamp taken from the first slave clock,
• a fourth time stamp calculated based on the third time stamp and the first time tuple using a predefined calculation method, and
• the first time tuple,
• calculating, at the second slave, a fifth time stamp based on the third time stamp and the first time tuple using the predefined calculation method, and
• comparing, at the second slave, the fifth time stamp to the fourth time stamp.