the present invention provides a method for implementing uplink transmission ta . the method includes : receiving , by a ue , a ta command , adding a ta value corresponding to the ta command and a pre - configured ta adjusting offset to obtain a practical uplink transmission timing advance ta ′; and transmitting , by the ue , uplink data according to the ta ′. the present invention also provides another method for implementing uplink transmission ta . compared with the prior art , in the methods provided by the present invention , a ta adjustment indicating table is respectively configured in the enodeb and the ue , and some items of the ta adjustment indicating table are commonly - used by a tdd system and an fdd system . the present invention also provides apparatuses for implementing uplink transmission ta . the present invention provides detailed solutions for implementing uplink transmission ta in the tdd system and achieves coherence between the designs of the tdd system and the fdd system to the largest extent .