1. A method comprising:sending, by a wireless device, a capability message comprising:
a first capability parameter indicating that downlink preemption is supported; and
a second capability parameter indicating that uplink preemption is supported;
receiving a control message comprising:
based on the first capability parameter, a first radio network temporary identifier (RNTI) for reception of a downlink preemption indication; and
based on the second capability parameter, a second RNTI for reception of an uplink preemption indication; and
receiving, based on the first RNTI or the second RNTI, downlink control information (DCI) indicating a preemption indication for at least one of a downlink preemption or an uplink preemption.