Methods, systems, and devices for wireless communications are described. In some cases, a sidelink user equipment (UE) may receive a configuration for performing a channel sensing procedure of a sidelink resource selection procedure for identifying sidelink resource candidates in a resource selection window. The configuration may indicate a first channel metric and a second channel metric for performing the channel sensing procedure. The UE may measure reference signaling in a sensing window according to one or both of the first and second channel metrics based on a duplex mode of the UE while performing the channel sensing. The reference signaling may correspond to a set of sidelink resource candidates in a resource selection window. The UE may determine an available set of sidelink resource candidates for a sidelink transmission from the set of sidelink resource candidates based on the measuring.