Method for UL waveform switching with group common DCI

1 . An apparatus comprising:

at least one processor; and

at least one non-transitory memory storing instructions that, when executed with the at least one processor, cause the apparatus to perform:

receiving a group common downlink control information signal, where the group common downlink control information signal comprises at least one waveform switching indication bit, wherein the at least one waveform switching indication bit is comprised in a transmit power control command block, wherein the at least one waveform switching indication bit performs a padding function in the group common downlink control information signal, and wherein the at least one waveform switching indication bit comprises: a sizing bit, a bit which is not a sizing bit, and a zero bit;

determining, from a medium access control control element, that information in the transmit power control command block is to be used as the at least one waveform switching indication bit;

determining a bit length of the at least one waveform switching indication bit;

determining a location of the at least one waveform switching indication bit within a payload of the group common downlink control information signal, wherein the determining of the bit length and the determining the location are based upon information in the transmit power control command block;

determining, from a radio resource control medium access control control element, that the group common downlink control information signal is to be used for determining waveform switching;

determining, from additional information received with the transmit power control command block of the group common downlink control information signal, to perform determining of information configured to be used for the determining of the waveform switching;

determining, based upon the at least one waveform switching indication bit, the information configured to be used for determining the waveform switching; and

determining, based upon the additional information received with the transmit power control command block of the group common downlink control information signal, to use the information to perform waveform switching,

wherein the waveform switching comprises dynamic waveform switching (DWS) comprising CP-OFDM and DFT-s-OFDM,

wherein the waveform switching further comprises dynamic waveform switching (DWS) between:

DFT-s-OFDM,

DFT-s-OFDM with frequency domain spectral shaping (DFT-s-OFDM FDSS),

DFT-s-OFDM with FDSS and spectrum extension (DFT-s-OFDM FDSS-SE),

DFT-s-OFDM with tone reservation, and

DFT-s-OFDM with FDSS, spectrum extension and tone reservation, and

wherein the at least one waveform switching indication bit comprises a value in the transmit power control command block, where the apparatus is configured to perform the determining of the information based, at least partially, upon the value in the transmit power control command block.