Abstract: An apparatus and a method for controlling a data transmission rate in a broadband wireless communication system are provided. In the method, an interference factor representing an interference degree by an external sector is measured. Interference given to the external sector is estimated using the interference factor, an interference weight depending on a location of a terminal, and an amount of wireless resource use of a self sector. A data transmission rate is determined with consideration of an interference estimation value and a wireless channel state of the terminal.

Abstract: An apparatus of a Base Station (BS) and a method for cancelling uplink interference in a wireless mobile communication system are provided. The method includes estimating interference to be exerted by each User Equipment (UE) on a plurality of neighbor cells based on a Rise over Thermal (RoT) level for the plurality of the neighbor cells, determining a transmit power change for each UE based on the estimated interference to be exerted on the neighbor cells, and transmitting the transmit power change for the UE to each UE. The cell coverage is maintained by maintaining the interference exerted on the neighbor cell at a proper level, and the average data rate is enhanced.

Abstract: An apparatus and a method for controlling a data transmission rate in a broadband wireless communication system are provided. In the method, an interference factor representing an interference degree by an external sector is measured. Interference given to the external sector is estimated using the interference factor, an interference weight depending on a location of a terminal, and an amount of wireless resource use of a self sector. A data transmission rate is determined with consideration of an interference estimation value and a wireless channel state of the terminal.

Abstract: An apparatus and method for determining an uplink scheduling priority in a broadband wireless communication system are provided. The apparatus includes a basic priority determination unit for calculating a basic priority metric of at least one Mobile Station (MS), a calculation unit for calculating a correction value for considering an interference level with respect to the basic priority metric by using downlink channel quality of each MS, and a final priority determination unit for determining an uplink scheduling priority by calculating a final priority metric by using the correction value.

Abstract: An orthogonal frequency division multiple access (OFDMA) communication system. The system has a plurality of cells, divides an entire frequency band into a plurality of subcarrier bands in each cell, and has subchannels that are a set of a preset number of subcarrier bands, respectively. Interference from neighbor cells of the plurality of cells is predicted. A time interval in which interference is absent and a time interval in which the interference is present are classified according to the interference predicted from the neighbor cells. Transmit power is equally distributed and allocated to subchannels capable of being allocated in the time interval in which the interference is absent. Transmit power is adjusted and allocated for the subchannels capable of being allocated such that inference to the neighbor cells does not occur in the time interval in which the interference is present.