METHOD AND SYSTEM FOR PRECISE TACT TIME SYNCHRONIZATION BY MEANS OF INTERACTION BETWEEN COMMUNICATION LEVELS AND SUB-LEVELS FOR COMMUNICATION SYSTEMS

摘要

1. A time synchronization method in a wireless communication system, comprising: transmitting a synchronization frame from a wireless transmitter to a wireless receiver via a wireless communication environment, the synchronization frame including a time stamp containing a transmission time indicating a local time of the transmitter when the symbol is at a predetermined position a synchronization frame is placed in a wireless communication environment for transmission; receiving a synchronization frame at a physical layer of a receiver; determining a reception time comprising A locally receiver, when said frame synchronization symbol was received from the wireless communication medium at a physical level receiver, a receiver timing synchronization with the transmitter by: determining the difference between said time stamp and said reception time; and adjusting the local time of the receiver based on the difference in order to synchronize the time of the receiver with the transmitter. 2. The method according to claim 1, further comprising: providing the received synchronization frame to a higher communication level at the receiver, the synchronization frame arriving at the higher communication level during receipt, indicating the local time of the receiver at which the synchronization frame arrived at the higher level ; moreover, the time synchronization of the receiver with the transmitter includes: using the time stamp of the received synchronization frame to determine the difference between the time stamp and delayed reception time; determining the corrected local time based on a combination of the above