Apparatus and method for transceiving channel state information

An apparatus of an evolved node B (eNB) in a wireless environment, the apparatus comprising:

• at least one processor;
• and
• at least one transceiver configured to be operatively coupled to the at least one processor,
• wherein the at least one processor is configured to:
• receive, from a user equipment (UE), a plurality of channel state information (CSI) feedback respectively corresponding to a plurality of CSI processes that are respectively allocated a plurality of precoding matrix indexes (PMIs), the plurality of CSI feedback each comprising information on a channel quality indication (CQI) as to a PMI allocated to a CSI process corresponding to each of the plurality of CSI feedback,
• determine a modulation and coding scheme (MCS) value based on the plurality of received CSI feedback, and
• transmit, to the UE, data modulated based on the determined MCS value by cyclically using the plurality of PMIs.

An apparatus of a user equipment (UE) in a wireless environment, the apparatus comprising:

• at least one processor;
• and
• at least one transceiver configured to be operatively coupled to the at least one processor,
• wherein the at least one processor is configured to:
• transmit, to an evolved node B (eNB), a plurality of channel state information (CSI) feedback respectively corresponding to a plurality of CSI processes that are respectively allocated a plurality of precoding matrix indexes (PMIs), the plurality of CSI feedback each comprising information on a channel quality indication (CQI) as to a PMI allocated to a CSI process corresponding to each of the plurality of CSI feedback, and
• receive, from the eNB, data transmitted by cyclically using the plurality of PMIs, and
• wherein the data transmitted from the eNB is modulated based on a modulation and coding scheme (MCS) value determined based on the plurality of CSI feedback.