Adaptive waveform selection in wireless communications

An apparatus for adaptive waveform selection for wireless communication in a wireless communication system, the apparatus comprising:

• at least one processor;
• a memory coupled to the at least one processor;
• and
• a communication interface coupled to the at least one processor, wherein the at least one processor is configured to:
• determine, based on a system information block (SIB) included in a received broadcast message and from a plurality of waveforms including a single-carrier frequency division multiplexing (SC-FDM) waveform and an orthogonal frequency division multiplexing (OFDM) waveform, a waveform to use for at least one uplink transmission associated with a random access channel (RACH) procedure;
• and
• transmit a message, via a wireless communication medium, the message corresponding to the RACH procedure based on the determined waveform.

A method for wireless communication performed by a wireless device, the method comprising:

• selecting, based on a system information block (SIB) included in a received broadcast message, a waveform from a plurality of waveforms;
• and
• transmitting, based on the waveform, a message corresponding to a random access channel (RACH) procedure,
• wherein the plurality of waveforms include a single-carrier frequency division multiplexing (SC-FDM) waveform, an orthogonal frequency division multiplexing (OFDM) waveform, or a combination thereof.