Method and apparatus for antenna selection for distributed MIMO system

A base station (BS) in a wireless communication system, the BS comprising:

• a transceiver configured to:
• transmit information about an antenna system of a base station, the information comprising a number of collocated antenna groups, a number of antenna modules for each type of antenna modules in each of the collocated antenna groups, wherein a collocated antenna group of the collocated antenna groups has at least two types of antenna modules, a first module with first antenna type and a second module with second antenna type;
• transmit configuration information for at least one channel state information-reference signal (CSI-RS) resource;
• transmit at least one CSI-RS according to the configuration information;
• and
• receive, based on a CSI generated for a subset of antenna modules, a CSI report comprising the CSI, the subset of antenna modules determined based on a comparison between measurements and a criterion.

A method of a user equipment (UE) a wireless communication system, the method comprising:

• receiving information about an antenna system of a base station, the information comprising a number of collocated antenna groups and a number of antenna modules for each type of antenna modules in each of the collocated antenna groups, wherein a collocated antenna group of the collocated antenna groups has at least two types of antenna modules, a first module with first antenna type and a second module with second antenna type;
• receiving configuration information for at least one channel state information-reference signal (CSI-RS) resource;
• and
• receiving at least one CSI-RS according to the configuration information and acquiring measurements;
• determining a subset of antenna modules based on a comparison between the measurements and a criterion;
• generating CSI for the subset of antenna modules;
• and
• transmitting a CSI report comprising the CSI.