An embodiment of the invention provides a telecommunications method to be performed by a first telecommunications device while trying to transmit a data block to a second telecommunications device. According to the embodiment, the first telecommunications device determines whether a first set of early termination criteria is satisfied. Then, if the first set of early termination criteria is satisfied, the first telecommunications device further determines whether a second set of early termination criteria is satisfied. The second set of early termination criteria is different from the first set of early termination criteria. If both the first set of early termination criteria and the second set of early termination criteria are satisfied before the first telecommunications device finishes transmitting the data block, the first telecommunications device reduces a transmission power.