Techniques for grouping and reporting antenna subselections for multiple-input multiple-output multiplexing

An apparatus for wireless communication at a first wireless node, 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, from a control entity, an antenna grouping parameter associated with a set of antenna elements of the first wireless node;
• identify, based at least in part on the antenna grouping parameter, at least a first subset of antenna elements of the set of antenna elements that meet one or more multiple-input multiple-output (MIMO) communication parameters for one or more target wireless nodes, or at least one target wireless node that meets the one or more MIMO communication parameters for at least a second subset of antenna elements of the set of antenna elements;
• and
• transmit to the control entity, responsive to receiving the antenna grouping parameter, an indication of at least the first subset of antenna elements or the at least one target wireless node.

An apparatus for wireless communication at a control 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:
• transmit, to at least a first wireless node, an antenna grouping parameter associated with a set of antenna elements of the first wireless node, the antenna grouping parameter for identification of at least a first subset of antenna elements of the set of antenna elements that meet one or more multiple-input multiple-output (MIMO) communication parameters for MIMO communications between the first wireless node and one or more target wireless nodes, or at least one target wireless node that meets the one or more MIMO communication parameters for at least a second subset of antenna elements of the set of antenna elements;
• and
• receive, from the first wireless node, an identification of at least the first subset of antenna elements or the at least one target wireless node.