Method and user equipment for transmitting channel state information and method and base station for receiving channel state information

A method for, at a base station belong to a coordinated multiple point transmission and reception (CoMP) set consisting of a plurality of base stations, receiving channel state information from a user equipment (UE) in a wireless communication system, the method comprising:

• transmitting, to the UE, resource allocation information of time-frequency resources used to transmit supplemental channel state information for at least one neighboring base station which does not participate in ongoing CoMP scheme;
• and
• receiving, from the UE, the supplemental channel state information for the at least one neighboring base station based on the resource allocation information,
• wherein the time-frequency resources used to transmit the supplemental channel state information for the at least one neighboring base station are part of time-frequency resources allocated for transmission of the channel state information of the base station, and
• wherein the supplemental channel state information is used to determine a CoMP scheme to be changed or replace channel state information for the at least one neighboring base station until the channel state information for the at least one neighboring base station is obtained when the at least one neighboring base station participates in the changed CoMP scheme.