US Patent 11064560 Cancellation indication signaling for uplink carriers

A wireless device receives uplink cancellation indication configuration parameters comprising a first parameter and a second parameter. The first parameter may indicate a first starting position in a first number of bit. The second parameter may indicate a second starting position in a second number of bit. The first number of bit and the second number of bit may be based on a DCI payload size. The wireless device may receive a DCI comprising cancellation indications. The wireless device may determine a first cancellation indication in the cancellation indications. The determination may be based on the first starting position when a scheduled uplink transmission is for a normal uplink carrier and may be based on the second starting position when the scheduled uplink transmission is for a supplementary uplink carrier. The wireless device may cancel the scheduled uplink transmission based on the first cancellation indication.