Patent ID: 7590423

Claim:
A channel allocation method in a base station (BS) that communicates on at least two channels in a wireless communication system, comprising the steps of: receiving information related to data rates of available channels from mobile stations (MSs) within a cell area of a BS; calculating a variance of the data rates for each channel and arranging the channels according to the calculated variances of data rates for each channel; allocating the channels in a descending order of variances such that a channel having a largest variance is allocated first to an MS having a highest data rate on the channel; and if there is a shortage of channel resources after the channel allocation, reallocating channels allocated to an MS in a best channel condition to an MS having channels insufficient to satisfy a required data rate of the MS from among MSs having more channels than required data rates of the MSs; wherein the reallocation is repeated until a predetermined fairness index is satisfied, and the fairness index is calculated by: Measured Throughput: ⁢ ( T ⁢ ⁢ 1 , T ⁢ ⁢ 2 , … ⁢ , Tn ) Fair Throughput: ⁢ ( O ⁢ ⁢ 1 , ⁢ O ⁢ ⁢ 2 , … ⁢ , On ) Normalized Throughput: ⁢ xi = Tj / Oi Fairness Index = { ∑ x i } 2 n ⁢ ∑ x i 2 wherein, the Measured Throughout is a throughput measured for each MS, the Fair Throughput is a throughput to be assigned to each MS, the Normalized Throughput is a ratio of Measured Throughput to Fair Throughput, the i is 1≦i≦n, and n denotes the number of MSs.