Reduced Sensing Time Configurations for Listen-Before-Talk (LBT)

A method of wireless communication performed by a user equipment (UE), the method comprising:

• receiving, from a base station (BS), first downlink control information (DCI) scheduling an uplink (UL) communication;
• refraining, based on an absence of a channel access parameter in the first DCI, from performing a clear channel assessment (CCA);
• and
• transmitting, to the BS over a shared frequency band, the UL communication without performing the CCA.

A method of wireless communication performed by a base station (BS), the method comprising:

• transmitting, to a user equipment (UE), an indication of a first clear channel assessment (CCA) timing configuration;
• transmitting, to the UE, first downlink control information (DCI) scheduling an uplink (UL) communication;
• transmitting, to the UE, a request to perform a CCA associated with a second CCA timing configuration;
• and
• receiving, from the UE, the UL communication in a time resource, wherein the time resource is associated with the first CCA timing configuration.

A user equipment (UE), comprising:

• a transceiver;
• and
• a processor in communication with the transceiver and configured to:
• cause the transceiver to:
• receive, from a base station (BS), first downlink control information (DCI) scheduling an uplink (UL) communication;
• receive, from the BS, a request to perform a clear channel assessment (CCA) associated with a first CCA timing configuration,
• perform, based on an indication to change to a second CCA timing configuration different from the first CCA timing configuration, the CCA based on the second CCA timing configuration;
• and
• cause the transceiver to:
• transmit, to the BS based on the CCA, the UL communication.