1. A method for wireless communications by a node, comprising: determining, based on an identity of the node, a plurality of layer-specific search spaces corresponding to a plurality of spatial layers, wherein each layer-specific search space comprises time and frequency resources used by physical downlink control channel (PDCCH) transmission on a corresponding spatial layer of the plurality of spatial layers by an antenna port associated with the spatial layer; and performing a search of one or more of the layer-specific search spaces for a PDCCH for the node.