In embodiments, apparatuses, methods, and storage media are described for determining, based on the DL-reference UL/DL subframe configuration, a DL hybrid automatic repeat request (HARQ) timing for an UL transmission of HARQ feedback associated with a DL transmission on Physical Downlink Shared Channel (PDSCH). Other aspects may relate to identifying subframes in a radio frame on which a UE may receive a Physical Downlink Control Channel (PDCCH) or enhanced PDCCH (ePDCCH) transmission. Specifically, the UE may receive multiple indications of uplink/downlink (UL/DL) subframe configurations and identify one or more subframes in which the UE may receive the PDCCH or ePDCCH transmission. The UE may then monitor one or more of the identified subframes and base discontinuous reception (DRX) timer functionality on one or more of the identified subframes.