Methods, systems, and apparatuses are provided for User Equipment (UE) Timing Advance (TA) reporting in a wireless communication system. The UE can appropriately trigger the TA report with the different configurations by system information (e.g., for Random Access (RA) procedure, for TA report during RA, etc.) and dedicated signaling (e.g., for Radio Resource Control (RRC) connected mode, for event-triggered TA report, etc.). A method for a UE in a wireless communication system can comprise receiving a first configuration of TA report, receiving a second configuration of TA report, and determining whether to trigger a second TA report upon receiving the second configuration based on whether a first TA report has been transmitted to a serving cell.