Disclosed are systems and techniques for wireless communications. For instance, a first user equipment (UE) can determine one or more parameters associated with sidelink communications between the first UE and a second UE. The first UE can determine, based on the one or more parameters, one or more non-preferred resources associated with the sidelink communications. The first UE can transmit an indication of the one or more non-preferred resources associated with the sidelink communications.