Downlink data synchronization method, device, unit, equipment and storage medium

The invention relates to a downlink data synchronization method, device, unit and equipment and a storage medium, and the method comprises the steps: obtaining a synchronization control signal which comprises a plurality of pieces of theoretical frame information; generating at least one piece of downlink data to be sent, and storing the downlink data in a cache unit; each piece of to-be-sent downlink data has actual frame information, and the actual frame information is synchronized with corresponding theoretical frame information when the downlink data is generated according to a preset first time advance; comparing the current theoretical frame information with cached actual frame information of downlink data to be sent in a one-to-one correspondence manner to obtain a comparison result; and processing the downlink data to be sent according to the comparison result, and reading and sending the downlink data to be sent corresponding to the actual frame information consistent with the current theoretical fra