A method for controlling an idle mode in a mobile station comprises transmitting an idle mode request to a serving base station to enter the idle mode, and receiving a decode information transmission frame value and a decode information change status from at least one base station. The method also comprises, if the decode information change status indicates a change in the decode information, maintaining the idle mode, and receiving the decode information from the at least one base station when the transmission frame value is reached. The decode information may comprise at least one of downlink channel descriptor (DCD) information, uplink channel descriptor (UCD) information, and forward error correction (FEC) code type information. The transmission frame value may comprise a frame number or a frame offset. The at least one base station may be in a same paging group.