A wireless device receives a first downlink control information (DCI) indicating: a hybrid retransmission request (HARQ) identifier; and a new data identifier (NDI). In response to the first DCI, a first transport block (TB) is generated. In response to not detecting a second DCI during a validation duration: the first DCI is invalidated; and transmission of the first TB is dropped. A third DCI is received. The third DCI indicates a same value of the HARQ identifier. In response to the third DCI, uplink signals are transmitted comprising, based on the NDI, one of an adaptive-retransmission of the first TB or a new transmission of a second TB.