Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling configuring the UE with a plurality of component carriers (CCs) for communicating with a base station and a semi-persistent resource allocation of a resource for each CC of the plurality of CCs. The UE may identify an availability indicator that indicates availability of the resource of the semi-persistent resource allocation on each CC of the plurality of CCs. The UE may communicate a data transmission via at least a subset of the plurality of CCs based at least in part on the availability indicator.