Synchronization method and apparatus, network element, and computer storage medium

A synchronization method, comprising:

• receiving first synchronization information that is sent by a first terminal and carries a Synchronization Signal (SS) and state information, the state information of the first terminal being used to indicate a current state of the first terminal;
• determining sending time information of a third terminal according to time domain resources used for transmission of the first synchronization information;
• sending second synchronization information based on the first synchronization information to the first terminal, the second synchronization information comprising:
• a SS and state information of the third terminal, and the state information of the third terminal being determined according to the state information of the first terminal;
• receiving third synchronization information sent by the first terminal based on the second synchronization information, the third synchronization information being used to trigger the first terminal to be synchronized with the third terminal;
• and
• synchronizing the third terminal with the first terminal according to the sending time information of the third terminal.

A synchronization apparatus, applied to a first terminal, the apparatus comprising:

• a hardware processor, configured to execute program modules stored on a memory, wherein the program modules comprise:
• a first sending unit, configured to send first synchronization information carrying a Synchronization Signal (SS) and state information to a third terminal, the state information being used to indicate a current state of the first terminal;
• a first receiving unit, configured to receive second synchronization information sent by the third terminal based on the first synchronization information after the first terminal has received synchronization information sent by a second terminal, the second synchronization information comprising:
• SS and state information of the third terminal, and the state information of the third terminal being determined according to the state information of the first terminal;
• a first determination unit, configured to determine, under a condition that the state information sent by the third terminal indicates that the third terminal enters a pre-synchronization state, receiving time information of the third terminal according to time domain resources used for transmission of the first synchronization information and receiving time information of the second terminal;
• a second sending unit, configured to send third synchronization information to the third terminal, the third synchronization information being used to trigger the third terminal to be synchronized with the first terminal;
• and
• a first synchronization unit, configured to synchronize the first terminal with the third terminal according to the receiving time information of the third terminal.