Channel state information for enhanced carrier aggregation

An apparatus for wireless communication, comprising:

• means for identifying, by the apparatus, a carrier aggregation configuration comprising a set of component carriers (CCs);
• means for identifying, by the apparatus, a channel state information (CSI) reporting configuration for each of a plurality of CSI reporting groups, wherein each CSI reporting group comprises a plurality of component carriers from the set of component carriers in the carrier aggregation configuration;
• means for determining, by the apparatus, a reference component carrier for each of the CSI reporting groups;
• means for identifying, by the apparatus, a CSI parameter for each reference component carrier;
• means for determining, by the apparatus, CSI values for one or more CSI reporting groups, wherein the CSI values correspond to carriers in the plurality of CCs for the one or more CSI reporting groups, and wherein the CSI values for a CSI reporting group in the one or more CSI reporting groups include the CSI parameter for the reference component carrier and delta values based on the CSI parameter for the reference component carrier;
• means for generating, by the apparatus, a combined report for each of the one or more CSI reporting groups based at least in part on the corresponding CSI reporting configuration, the combined reports each including the corresponding CSI values for a CSI reporting group in the one or more CSI reporting groups;
• and
• means for transmitting, by the apparatus, one or more of the combined reports.

An apparatus for wireless communication, comprising:

• at least one processor;
• memory in electronic communication with the at least one processor;
• and
• instructions stored in the memory and operable, when executed by the at least one processor, to cause the apparatus to:
• identify, by the apparatus, a carrier aggregation configuration comprising a set of component carriers (CCs);
• identify, by the apparatus, a channel state information (CSI) reporting configuration for each of a plurality of CSI reporting groups, wherein each CSI reporting group comprises a plurality of component carriers from the set of component carriers in the carrier aggregation configuration;
• determine, by the apparatus, CSI values for one or more CSI reporting groups, wherein the CSI values correspond to carriers in the plurality of CCs for the one or more CSI reporting groups, and wherein the CSI values for a CSI reporting group in the one or more CSI reporting groups include a CSI parameter for a reference component carrier and delta values based on the CSI parameter for the reference component carrier;
• generate, by the apparatus, a combined report for each of the one or more CSI reporting groups based at least in part on the corresponding CSI reporting configuration, the combined reports each including the corresponding CSI values for a CSI reporting group in the one or more CSI reporting groups;
• and
• transmit, by the apparatus, one or more of the combined reports.