Patent ID: 7609661

Claim:
A method for controlling an uplink traffic load by a mobile station (MS) in a wireless mobile communication system having a multi-cell configuration in which a full frequency band is divided into a plurality of sub-frequency bands and a neighbor cell reuses one of the divided sub-frequency bands, the method comprising the steps of: receiving a reference signal from each of a base station (BS) of a home cell to which the MS belongs and a BS of a neighbor cell; calculating a power difference between the received reference signals to estimate a path loss value for each individual BS, and reporting the estimated path loss value to the BS of the home cell; and transmitting an uplink traffic signal, taking into account uplink traffic transmission power and a data rate allocated from the BS of the home cell; wherein the allocated uplink traffic transmission power satisfies γ i < L ii ∑ j ≠ i ⁢ L ij and is determined by P 0 = ( γ 1 ⁢ L 10 + L 11 ) ⁢ γ 0 L 00 ⁢ L 11 - γ 0 ⁢ γ 1 ⁢ L 10 ⁢ L 01 ⁢ η P 1 = ( γ 0 ⁢ L 01 + L 00 ) ⁢ γ 1 L 00 ⁢ L 11 - γ 0 ⁢ γ 1 ⁢ L 10 ⁢ L 01 ⁢ η where γ i denotes a carrier-to-interference ratio (CIR) for an MS of an i th BS, L ab denotes a path loss value of an MS located in an a th BS for a b th BS, P A denotes uplink traffic transmission power for an MS of an A th BS, and η denotes thermal noise power.