Patent ID: 8396511

Claim:
A Base Station (BS) apparatus in a wireless communication system, the apparatus comprising: a manager for increasing a set point associated with a Mobile Station (MS) if an error is detected in a burst received from the MS; a detector for incrementing a counter associated with the MS if a difference, between a maximum Transmission (Tx) power of the MS and a Tx power used by the MS when transmitting the burst in which the error was detected, is less than a difference threshold; and a determining unit for decreasing a number of slots allocated to the MS, if the counter associated with the MS is greater than a counter threshold, wherein the detector sets the counter associated with the MS to a preset negative integer value if the counter associated with the MS is greater than the counter threshold, wherein the preset negative integer value is equal to a number of frames between a time point at which channel state information is obtained and a time point at which the transmission format is determined by using the channel state information.