Antenna selection techniques for uplink and downlink wireless communications

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

• at least one processor;
• and
• at least one memory coupled with the at least one processor, the at least one memory storing instructions executable by the at least one processor to cause the apparatus to:
• select a first subset of antennas for uplink transmission based at least in part on a first downlink channel metric associated with the first subset of antennas, the first downlink channel metric being related to channel strength;
• select a second subset of antennas for downlink reception based at least in part on a second downlink channel metric associated with the second subset of antennas, the second downlink channel metric being related to multiple-input multiple-output (MIMO) channel capacity and is different than the first downlink channel metric, wherein the second subset of antennas includes each antenna in the first subset of antennas;
• and
• communicate with an access network entity using the first subset of antennas for uplink transmissions and the second subset of antennas for downlink transmissions.

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

• means for selecting a first subset of antennas for uplink transmission based at least in part on a first downlink channel metric associated with the first subset of antennas, the first downlink channel metric being related to channel strength;
• means for selecting a second subset of antennas for downlink reception based at least in part on a second downlink channel metric associated with the second subset of antennas, the second downlink channel metric being related to multiple-input multiple-output (MIMO) channel capacity and is different than the first downlink channel metric, wherein the second subset of antennas includes each antenna in the first subset of antennas;
• and
• means for communicating with an access network entity using the first subset of antennas for uplink transmissions and the second subset of antennas for downlink transmissions.

A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by at least one processor to:

• select a first subset of antennas for uplink transmission based at least in part on a first downlink channel metric associated with the first subset of antennas, the first downlink channel metric being related to channel strength;
• select a second subset of antennas for downlink reception based at least in part on a second downlink channel metric associated with the second subset of antennas, the second downlink channel metric being related to multiple-input multiple-output (MIMO) channel capacity and is different than the first downlink channel metric, wherein the second subset of antennas includes each antenna in the first subset of antennas;
• and
• communicate with an access network entity using the first subset of antennas for uplink transmissions and the second subset of antennas for downlink transmissions.