Patent ID: 8923253

Claim:
A method for transmitting, by a user equipment (UE), channel state information (CSI) for a plurality of eNodeBs in a wireless communication system where the UE is being served by the plurality of eNodeBs, the method comprising: receiving control information about a transmission of the CSI from a primary serving eNodeB; allocating a CSI combination composed of respective CSIs for downlink channels associated with the plurality of eNodeBs including the primary serving eNodeB to a multiple CSI transmission format based on the received control information, wherein the multiple CSI transmission format is a combined form of two or more CSI transmission formats according to a PUCCH (Physical Uplink Control CHannel)-based transmission mode; and transmitting the CSI combination to the serving eNodeB using the multiple CSI transmission format, wherein the control information includes information on a maximum payload size of a CSI combination being able to be transmitted in a uplink subframe, a transmission period and a transmission start time point of the CSI combination, and a transmission period and a transmission start time point of each of the respective CSIs.