A method for uplink (UL) transmission performed by a UE is provided. The method includes: performing an UL transmission during a first PUSCH duration; receiving a PDCCH that schedules a second PUSCH duration; determining that the first PUSCH duration overlaps with the second PUSCH duration in a time domain; determining that the second PUSCH duration is prioritized over the first PUSCH duration; and cancelling the ongoing UL transmission during the first PUSCH duration starting from a preconfigured time period after an end of the PDCCH that schedules the second PUSCH duration.