Techniques described herein permit a narrowband Internet of Things (NB-IoT) user equipment (UE) to combine narrowband reference signals (NRS) with other signals, which the NB-IoT UE already receives, to improve measurement accuracy. These other signals may require different modifications to be combined with the NRS depending on the type of signal. Techniques described herein provide indications of how the UE is to combine different types of signals with an NRS in order to improve measurement accuracy.