Techniques are provided that enable signaling of physical layer parameters in a shared radio frequency spectrum band or a dedicated radio frequency spectrum band (or any available radio frequency spectrum band). One or more physical layer channels may be used to transmit physical layer parameters, and different portions of the channel(s) may carry physical layer information for different groups of UEs. A base station may configure a UE into a UE group that monitors particular channel resources based on the UE group. In this manner, a base station may transmit physical layer parameters that may be received by a UE for receiving wireless communications for one or more subframe. A base station may transmit physical layer parameters to be monitored by the use using a physical hybrid automatic repeat request (HARQ) indicator channel (PHICH), a physical control format indicator channel (PCFICH), a physical downlink control channel (PDCCH), or combinations thereof.