The synchronization module can automatically complete cell search and wireless signaling processing of TD-LTE(4G synchronous module)/5G NR(5G synchronous module) wireless network, get accurate TDD upstream and downstream time slot, upstream and downstream time slot ratio and other information, and output the upstream and downstream time slot indicator signal through GPIO interface, the module interface is standard Mini PCIE.The 4G synchronization module supports the function of TD-LTE data card, which can realize the data transmission function of 4G Internet.The frequency band supported by the private network synchronization module can be customized according to the demand.