Section: 10.1.4.2 Mapping to physical resources
Content: The sequence shall be multiplied with the amplitude scaling factor and mapped in sequence starting with to the sub-carriers. The set of sub-carriers used in the mapping process shall be identical to the corresponding NPUSCH transmission as defined in clause 10.1.3.6. The mapping to resource elements shall be in increasing order of first, then , and finally the slot number. The values of the symbol index in a slot are given in Table 10.1.4.2-1. Table 10.1.4.2-1: Demodulation reference signal location for NPUSCH. If higher layer parameter resourceReservationConfigUL is configured, then in case of NPUSCH format 1 transmission associated with C-RNTI or SPS C-RNTI using UE-specific NPDCCH search space and the Resource reservation field in the DCI is set to 1 including NPUSCH format 1 transmission without a corresponding NPDCCH, or in case of NPUSCH format 2 transmission associated with C-RNTI using UE-specific NPDCCH search space, - In a subframe for or a slot for that is overlapping with any fully reserved uplink subframe as defined in clause 16.5 in [4], - for , the demodulation reference signal transmission is postponed until the next NB-IoT uplink subframe that is not fully reserved. - for , the demodulation reference signal transmission in the slot is postponed until the next slot spanning over two contiguous uplink subframes not overlapping with any uplink subframe that is fully reserved. - In a subframe for or a slot for that is not overlapping with any fully reserved uplink subframe, any demodulation reference signal transmission in SC-FDMA symbols overlapping with reserved symbols is dropped.