Patent ID: 9209882
Filing Date: 2015-12-08
Classification: H04B

Abstract:
1. A method for a user equipment device (UE) to report channel state information (CSI) to an evolved base station (eNodeB), comprising: obtaining, by the UE, CSI of a plurality of downlink component carriers (CCs), wherein CSI of each downlink CC comprises at least one of the following items: a rank indicator (RI), a wideband channel quality indicator (CQI), a subband CQI and a subband precoding matrix indicator (PMI); when at least part of the CSI of the plurality of downlink CCs needs to be reported in an uplink subframe, identifying, by the UE, a reported content that is to be reported to the eNodeB and a non-reported content that is not to be reported to the eNodeB from all contents in the CSI of the plurality of downlink CCs according to preset priorities of the RI, the wideband CQI, the subband CQI and the subband PMI, wherein the priority of the RI is higher than the priority of the wideband CQI, the priority of the wideband CQI is higher than the priority of the subband CQI, the priority of the subband CQI is the same as the priority of the subband PMI, and wherein the reported content includes one or more items whose priorities are higher than that of other one or more items included in the non-reported content; and sending, by the UE, only the reported content to the eNodeB on a physical uplink control channel (PUCCH) of the uplink subframe, wherein the one or more items included the reported content include at least one of the RI or the wideband CQI, and the other one or more items included in the non-reported content include at least one of the subband CQI or the subband PMI.