Techniques for providing UE-assistance for a selection of a demodulation reference signal port multiplexing pattern

An apparatus for wireless communication at a network device, comprising:

• at least one processor;
• and
• memory coupled with the at least one processor, the memory storing instructions executable by the at least one processor to cause the apparatus to:
• receive, from a user equipment (UE), signaling indicating one or both of a frequency selectivity metric based at least in part on a frequency selectivity of a channel between the UE and the network device or a demodulation reference signal port multiplexing pattern based at least in part on the frequency selectivity of the channel between the UE and the network device;
• transmit, to the UE, a configuration of the demodulation reference signal port multiplexing pattern, wherein the configuration indicates whether the demodulation reference signal port multiplexing pattern is associated with code division multiplexing based at least in part on the signaling;
• and
• transmit or receive a demodulation reference signal to or from one or more ports of the UE based at least in part on the demodulation reference signal port multiplexing pattern.

A method for wireless communication at a user equipment (UE), comprising:

• measuring a frequency selectivity of a channel between the UE and a network device;
• transmitting, to the network device, signaling indicating one or both of a frequency selectivity metric based at least in part on the frequency selectivity of the channel or a demodulation reference signal port multiplexing pattern based at least in part on the frequency selectivity of the channel;
• and
• receiving, from the network device, a configuration of the demodulation reference signal port multiplexing pattern, wherein the configuration indicates whether the demodulation reference signal port multiplexing pattern is associated with code division multiplexing based at least in part on the signaling.

A method for wireless communication at a network device, comprising:

• receiving, from a user equipment (UE), signaling indicating one or both of a frequency selectivity metric based at least in part on a frequency selectivity of a channel between the UE and the network device or a demodulation reference signal port multiplexing pattern based at least in part on the frequency selectivity of the channel between the UE and the network device;
• transmitting, to the UE, a configuration of the demodulation reference signal port multiplexing pattern, wherein the configuration indicates whether the demodulation reference signal port multiplexing pattern is associated with code division multiplexing based at least in part on the signaling;
• and
• transmitting or receiving a demodulation reference signal to or from one or more ports of the UE based at least in part on the demodulation reference signal port multiplexing pattern.