A method, comprising: receiving, by a user equipment, a configuration of uplink resources for autonomous transmissions, wherein the configuration comprises an indication of which of a plurality of hopping patterns to apply; transmitting the autonomous transmissions based on the configured uplink resources including the indicated hopping pattern, wherein the hopping is performed on a per-short-transmission-time-interval or subslot-interval basis, wherein each hopping pattern of the plurality of hopping patterns defines at least one parameter of: physical resource block(s) for uplink, UL, transmission in each short transmission time interval, sTTI; demodulation reference signal, DMRS, cyclic shift in each short transmission time interval, sTTI; demodulation reference signal, DMRS, sequence in each short transmission time interval, sTTI; index of the demodulation reference signal, DMRS, interleaved frequency division multiple access, IFDMA, comb in each short transmission time interval, sTTI; and characterised in that, for each hopping pattern, any of said at least one parameter changes from one short transmission time interval, sTTI, to another such that at least some of the parameters do not change between sTTIs#1 and #2 and between sTTI#4 and #5 allowing utilization of the same demodulation reference signal, DMRS, for two sTTIs. receiving, by a user equipment, a configuration of uplink resources for autonomous transmissions, wherein the configuration comprises an indication of which of a plurality of hopping patterns to apply; transmitting the autonomous transmissions based on the configured uplink resources including the indicated hopping pattern, wherein the hopping is performed on a per-short-transmission-time-interval or subslot-interval basis, wherein each hopping pattern of the plurality of hopping patterns defines at least one parameter of: physical resource block(s) for uplink, UL, transmission in each short transmission time interval, sTTI; demodulation reference signal, DMRS, cyclic shift in each short transmission time interval, sTTI; demodulation reference signal, DMRS, sequence in each short transmission time interval, sTTI; index of the demodulation reference signal, DMRS, interleaved frequency division multiple access, IFDMA, comb in each short transmission time interval, sTTI; and characterised in that, for each hopping pattern, any of said at least one parameter changes from one short transmission time interval, sTTI, to another such that at least some of the parameters do not change between sTTIs#1 and #2 and between sTTI#4 and #5 allowing utilization of the same demodulation reference signal, DMRS, for two sTTIs. physical resource block(s) for uplink, UL, transmission in each short transmission time interval, sTTI; demodulation reference signal, DMRS, cyclic shift in each short transmission time interval, sTTI; demodulation reference signal, DMRS, sequence in each short transmission time interval, sTTI; index of the demodulation reference signal, DMRS, interleaved frequency division multiple access, IFDMA, comb in each short transmission time interval, sTTI; and characterised in that, for each hopping pattern, any of said at least one parameter changes from one short transmission time interval, sTTI, to another such that at least some of the parameters do not change between sTTIs#1 and #2 and between sTTI#4 and #5 allowing utilization of the same demodulation reference signal, DMRS, for two sTTIs.