For determining reference signal locations, a method determines a number of Transmission Time Intervals (TTI) in a scheduled transmission of a plurality of TTI. The method further determines one or more reference signal locations based on the number of TTI and one or more of a parameter received from a higher layer wherein the higher layer is higher than a physical layer, a subframe index, a subband size, and a Time Division Duplex (TDD) configuration for the scheduled transmission.