Embodiments include methods for a network device configured to schedule transmission or reception by a terminal device. Such methods include transmitting a semi-persistent scheduling configuration to the terminal device. The semi-persistent scheduling configuration includes a plurality of configurations that define transmission or reception opportunities for the terminal device based on a respective plurality of different time intervals. Such methods include transmitting, to the terminal device, an index indicating a particular one of the configurations that defines transmission or reception opportunities for the terminal device based a particular time interval. Such methods include receiving or transmitting data with the terminal device during at least a portion of the transmission or reception opportunities, for the terminal device, that are defined based on the particular time interval. Other embodiments include complementary methods for a terminal device, as well as network devices and terminal devices configured to perform such methods.