| CPC H04W 48/12 (2013.01) [H04L 5/0053 (2013.01); H04W 48/16 (2013.01); H04W 72/0453 (2013.01); H04W 72/23 (2023.01); H04W 74/0833 (2013.01)] | 20 Claims |

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1. A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive downlink control information (DCI) indicating switching to an uplink carrier;
determine, based on whether the uplink carrier is a licensed carrier or an unlicensed carrier, to:
transmit a confirmation for switching to the uplink carrier in response to the uplink carrier being the unlicensed carrier; and
not transmit the confirmation for switching to the uplink carrier in response to the uplink carrier being the licensed carrier; and
based on the uplink carrier being the unlicensed carrier, transmit the confirmation after switching to the uplink carrier.
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