Patent ID: 8358605

Claim:
A method of receiving a channel quality indicator (CQI) by a base station, the method comprising: transmitting a message to a mobile station which is in a sleep mode to transit to a normal mode, when data to be transmitted to the mobile station is present, wherein the message includes an indicator for indicating a number of the data to be transmitted to the mobile station; allocating a temporary channel quality indicator channel (CQICH) to the mobile station according to the indicator; and receiving a channel Quality indicator (CQI) from the mobile station through the temporary CQICH, wherein the allocating the temporary CQICH is performed when an interval between a first time and a second time is greater than a prescribed threshold value, the first time being a recent CQI reporting time in accordance with a CQI reporting period of the mobile station, the second time being a time when the data to be transmitted to the mobile station is generated.