Scheduling of PDSCH transmission with DFT-s-OFDM waveform

1. A method of wireless communication, the method comprising:

indicating, by a base station (BS), a time domain resource allocation within one Discrete Fourier Transform (DFT) size in a downlink control information (DCI), wherein the one DFT size equals a number of subcarriers allocated for transmission within one Orthogonal Frequency Division Multiplexing (OFDM) symbol; and

transmitting, by the BS and following a DFT operation, a physical downlink shared channel (PDSCH) with a Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform in accordance with the time domain resource allocation within the one DFT size,

wherein the method further comprises:

multiplexing, by the BS, a plurality of PDSCHs for one or more user equipments (UEs) in a time division multiplexing (TDM) manner;

performing, by the BS, the DFT operation on the multiplexed plurality of PDSCHs,

wherein the BS performs a multiple-step resource allocation for the plurality of PDSCHs with the DFT-s-OFDM waveform,

wherein prior to performing the DFT operation, determining, by the BS, a time resources allocation of modulated symbols for PDSCH transmission within the one DFT size, and determining, by the BS, a frequency domain resource allocation and resource mapping after performing the DFT operation.

2. The method of claim 1 , wherein for a given user equipment (UE), multiplexing, by the BS, a physical downlink control channel (PDCCH) and the PDSCH with the DFT-s-OFDM waveform in a time division multiplexing (TDM) manner prior to the DFT operation.

3. The method of claim 1 , wherein the indicating by the BS includes using a starting and length indicator value (SLIV) to indicate the time domain resource allocation within the one OFDM symbol prior to the DFT operation.

4. The method of claim 1 , wherein a starting physical resource block (PRB) position and the DFT size are configured by higher layers via new radio (NR) minimum system information (MSI).

5. The method of claim 1 , wherein a starting physical resource block (PRB) position and a number of PRBs are configured by higher layers via new radio (NR) minimum system information (MSI).

6. The method of claim 1 , wherein a starting physical resource block (PRB) position, a number of PRBs, or the DFT size is configured by higher layers via new radio (NR) remaining minimum system information (RMSI).

7. The method of claim 1 , wherein a same DFT size is used for transmission of a physical downlink control channel (PDCCH) and the PDSCH.

8. A wireless communication apparatus, comprising:

a base station (BS) configured to:

indicate a time domain resource allocation within one Discrete Fourier Transform (DFT) size in a downlink control information (DCI), wherein the one DFT size equals a number of subcarriers allocated for transmission within one Orthogonal Frequency Division Multiplexing (OFDM) symbol; and

transmit, following a DFT operation, a physical downlink shared channel (PDSCH) with a Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform in accordance with the time domain resource allocation within the one DFT size;

multiplex a plurality of PDSCHs for one or more user equipments (UEs) in a time division multiplexing (TDM) manner; and

perform the DFT operation on the multiplexed plurality of PDSCHs,

wherein the BS performs a multiple-step resource allocation for the plurality of PDSCHs with the DFT-s-OFDM waveform, and

wherein prior to performing the DFT operation, determining, by the BS, a time resources allocation of modulated symbols for PDSCH transmission within the one DFT size, and determining, by the BS, a frequency domain resource allocation and resource mapping after performing the DFT operation.

9. The wireless communication apparatus of claim 8 , for a given UE, the BS is configured to multiplex a physical downlink control channel (PDCCH) and the PDSCH with the DFT-s-OFDM waveform in a time division multiplexing (TDM) manner prior to the DFT operation.

10. The wireless communication apparatus of claim 8 , wherein to indicate the time domain resource allocation includes using a starting and length indicator value (SLIV) to indicate the time domain resource allocation within the one OFDM symbol prior to the DFT operation.

11. The wireless communication apparatus of claim 8 , wherein a starting physical resource block (PRB) position and the DFT size are configured by higher layers via new radio (NR) minimum system information (MSI).

12. The wireless communication apparatus of claim 8 , wherein a starting physical resource block (PRB) position and a number of PRBs are configured by higher layers via new radio (NR) minimum system information (MSI).

13. The wireless communication apparatus of claim 8 , wherein a starting physical resource block (PRB) position, a number of PRBs, or the DFT size is configured by higher layers via new radio (NR) remaining minimum system information (RMSI).

14. The wireless communication apparatus of claim 8 , wherein a same DFT size is used for transmission of a physical downlink control channel (PDCCH) and the PDSCH.

15. A non-transitory computer-readable media (CRM) comprising computer instructions, where upon execution of the computer instructions by one or more processors of a base station (BS), causes the one or more processors to:

indicate a time domain resource allocation within one Discrete Fourier Transform (DFT) size in a downlink control information (DCI); and

transmit, following a DFT operation, a physical downlink shared channel (PDSCH) with a Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform in accordance with the time domain resource allocation within the one DFT size;

multiplex a plurality of PDSCHs for one or more user equipments (UEs) in a time division multiplexing (TDM) manner;

perform the DFT operation on the multiplexed plurality of PDSCHs,

wherein the BS performs a multiple-step resource allocation for the plurality of PDSCHs with the DFT-s-OFDM waveform, and

wherein prior to performing the DFT operation, determining, by the BS, a time resources allocation of modulated symbols for PDSCH transmission within the one DFT size, and

determine a frequency domain resource allocation and resource mapping after performing the DFT operation.

16. The non-transitory CRM of claim 15 , wherein the one or more processors, prior to performing the DFT operation, determine a time resource allocation of modulated symbols for PDSCH transmission within the one DFT size and, after performing the DFT operation, determine a frequency domain resource allocation and resource mapping.

17. The non-transitory CRM of claim 15 , wherein a starting physical resource block (PRB) position and the DFT size are configured by higher layers via new radio (NR) minimum system information (MSI).

18. The non-transitory CRM of claim 15 , wherein a starting physical resource block (PRB) position and a number of PRBs are configured by higher layers via new radio (NR) minimum system information (MSI).

19. The non-transitory CRM of claim 15 , wherein a starting physical resource block (PRB) position, a number of PRBs, or the DFT size is configured by higher layers via new radio (NR) remaining minimum system information (RMSI).

20. The non-transitory CRM of claim 15 , wherein a same DFT size is used for transmission of a physical downlink control channel (PDCCH) and the PDSCH.