1. A method by a terminal in a communication system, the method comprising:receiving, from a base station, first information for at least one subframe;
receiving, from the base station, downlink control information (DCI) on a first subframe, the DCI including second information for channel status information (CSI);
transmitting, to the base station, CSI for a second subframe on a third subframe based on the DCI, if the second information is a first value, the second subframe being identified based on the first information; and
transmitting, to the base station, CSI for a fourth subframe on the third subframe, if the second information is a second value.