In some aspects, a user equipment (UE) may receive downlink control information (DCI) that includes a timing value indicating a timing of an opportunity, subsequent to reception of the DCI, for transmission or reception of a communication corresponding to the DCI. The UE may determine an uplink opportunity or a downlink opportunity for transmission or reception of the communication based at least in part on the timing of the opportunity. A counter for determining the uplink opportunity may be incremented only for transmission time intervals (TTIs) in which the UE is allowed to transmit the communication in an uplink channel. A counter for determining the downlink opportunity may be incremented only for TTIs in which the UE can expect to receive the communication in a downlink channel. The UE may transmit or receive the communication in the uplink opportunity or the downlink opportunity. Other aspects are disclosed.