Multiple user (mu) support for reference signal (rs) and data multiplexing on shared uplink (ul) resources(s)

An apparatus for wireless communications performed by a user equipment (UE), comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor, the memory including instructions executable by the at least one processor to cause the apparatus to:
• determine a mechanism to allow the UE to share uplink (UL) resources with at least one other UE for UL transmission;
• apply the mechanism to at least one of reference signal (RS) symbols or information symbols to be multiplexed using orthogonal frequency division multiplexing (OFDM) before performing a discrete Fourier transform (DFT) for the UL transmission;
• and
• output a waveform for the UL transmission after performing the DFT and an inverse fast Fourier transform (IFFT).

An apparatus for wireless communications performed by a network entity, comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor, the memory including instructions executable by the at least one processor to cause the apparatus to:
• receive a waveform with uplink (UL) transmissions from different user equipments (UEs) on shared UL resources;
• and
• apply a mechanism to distinguish at least one of reference signal (RS) symbols or information symbols multiplexed using orthogonal frequency division multiplexing (OFDM) from the different UEs after performing a fast Fourier transform (FFT) of the waveform, extracting tones for each of the different UEs, and performing an inverse discrete Fourier transform (IDFT).