Techniques for supporting wideband array operation

A method for wireless communications at a network entity, comprising:

• configuring a plurality of transmissions instances for a plurality of reference signals across a carrier bandwidth comprising a plurality of sub-bands, wherein at least one transmission instance of the plurality of transmissions instances is configured in each sub-band of the plurality of sub-bands;
• transmitting, from the network entity to a user equipment (UE), a configuration message indicating a plurality of resources for the plurality of sub-bands configured for the carrier bandwidth;
• transmitting, from the network entity to the UE, the plurality of reference signals in the plurality of configured transmission instances, wherein a first reference signal of the plurality of reference signals is transmitted in a first sub-band of the plurality of sub-bands and a second reference signal of the plurality of reference signals is transmitted in a second sub-band of the plurality of sub-bands different from the first sub-band, and wherein the first reference signal and the second reference signal at least partially overlap in time;
• and
• communicating with the UE in the carrier bandwidth using a plurality of communication beams for the plurality of sub-bands based at least in part on the transmitted plurality of reference signals, wherein the communicating uses a first communication beam of the plurality of communication beams in the first sub-band and the communicating uses a second communication beam of the plurality of communication beams different from the first communication beam in the second sub-band.

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

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• receive, at the UE from a network entity, a configuration message indicating a plurality of resources for a plurality of sub-bands configured for a carrier bandwidth;
• receive, at the UE from the network entity, a plurality of reference signals across the carrier bandwidth comprising the plurality of sub-bands, wherein a first reference signal of the plurality of reference signals is received in a first sub-band of the plurality of sub-bands and a second reference signal of the plurality of reference signals is received in a second sub-band of the plurality of sub-bands different from the first sub-band, and wherein the first reference signal and the second reference signal at least partially overlap in time;
• measure, for the plurality of reference signals, a plurality of signal measurement values corresponding to the plurality of sub-bands;
• determine a plurality of communication beams for the plurality of sub-bands based at least in part on the plurality of signal measurement values, wherein a first communication beam of the plurality of communication beams is determined for the first sub-band and a second communication beam different from the first communication beam is determined for the second sub-band;
• and
• communicate with the network entity in the carrier bandwidth based at least in part on the determined plurality of communication beams.

An apparatus for wireless communications at a network entity, comprising:

• a processor;
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• configure a plurality of transmissions instances for a plurality of reference signals across a carrier bandwidth comprising a plurality of sub-bands, wherein at least one transmission instance of the plurality of transmissions instances is configured in each sub-band of the plurality of sub-bands;
• transmit, from the network entity to a user equipment (UE), a configuration message indicating a plurality of resources for the plurality of sub-bands configured for the carrier bandwidth;
• transmit, from the network entity to the UE, the plurality of reference signals in the plurality of configured transmission instances, wherein a first reference signal of the plurality of reference signals is transmitted in a first sub-band of the plurality of sub-bands and a second reference signal of the plurality of reference signals is transmitted in a second sub-band of the plurality of sub-bands different from the first sub-band, and wherein the first reference signal and the second reference signal at least partially overlap in time;
• and
• communicate with the UE in the carrier bandwidth using a plurality of communication beams for the plurality of sub-bands based at least in part on the transmitted plurality of reference signals, wherein the communicating uses a first communication beam of the plurality of communication beams in the first sub-band and the communicating uses a second communication beam of the plurality of communication beams different from the first communication beam in the second sub-band.