The application discloses a synchronous
link data transmission method, a
communication device and a storage medium. The method is used for synchronous
link data transmission between a first device and a second device. The synchronous link has a reserved transmission window set at a preset interval. The first device generates a first service data block corresponding to the reserved transmission window in
time sequence. The method is executed by the first device. The method comprises the following steps: in response to the fact that
data transmission associated with a previous first service data block has been completed in a current transmission window, determining whether the current transmission window has sufficient remaining time; and in response to the fact that the current transmission window has sufficient remaining time, performing
data transmission associated with a first service data block to be currently transmitted with the second device. The application can optimize the synchronous link of the pre-allocated time slice, improve the fragmentation problem of the time slice available for other links, reduce the link
switching frequency, and improve the scheduling efficiency.