Patent ID: 8432851

Claim:
A method for time synchronization, the method comprising: obtaining a master sending time stamp, a slave receiving time stamp, a slave sending time stamp, and a master receiving time stamp, wherein the master sending time stamp is the time instant got from a master clock when a specific position of a first specific symbol is sent at the master clock side, the slave receiving time stamp is the time instant got from a slave clock when the specific position of the first specific symbol is received at the slave clock side, the slave sending time stamp is the time instant got from the slave clock when a specific position of a second specific symbol is sent at the slave clock side, and the master receiving time stamp is the time instant got from the master clock when the specific position of the second specific symbol is received at the master clock side; and adjusting the time of the slave clock according to the offset calculated from the time stamps to synchronize with the clock time of the master clock.