Abstract: A method for avoiding interference of an interfering Base Station (BS) in an interfered BS of a mobile communication system includes determining an interference value of an interfering BS at a control region during a determination interval. When the interference value is greater than a threshold value, the method further includes operating in a modified Transmit/receive Transition Gap (TTG) mode. When the interference value is less than the threshold value, the method further includes operating in a general TTG mode.

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 a method for controlling uplink interference in a wireless communication system. The method for controlling the uplink interference includes determining at least one interference signal power threshold determined by at least one neighbor Base Station (BS). The method also includes determining a transmit power offset for at least one serviced Mobile Station (MS) using the at least one interference signal power threshold. The method further includes sending the transmit power offset for the at least one MS to the at least one MS.

Abstract: An apparatus for use in a base station capable of checking whether a frequency is illegally used in a wireless communication system are provided. Operations of the base station for checking whether the frequency is illegally used includes setting a silence interval in which a resource is not allocated to a terminal, using silence interval setting information provided from a system manager; when the silence interval arrives, measuring RSSI; and transmitting the RSSI to the system manager to examine at least one of a frequency illegal use and a reception path error using the RSSI.

Abstract: A method for avoiding interference of an interfering Base Station (BS) in an interfered BS of a mobile communication system includes determining an interference value of an interfering BS at a control region during a determination interval. When the interference value is greater than a threshold value, the method further includes operating in a modified Transmit/receive Transition Gap (TTG) mode. When the interference value is less than the threshold value, the method further includes operating in a general TTG mode.

Abstract: An apparatus and a method for controlling uplink interference in a wireless communication system. The method for controlling the uplink interference includes determining at least one interference signal power threshold determined by at least one neighbor Base Station (BS). The method also includes determining a transmit power offset for at least one serviced Mobile Station (MS) using the at least one interference signal power threshold. The method further includes sending the transmit power offset for the at least one MS to the at least one MS.

Abstract: A method and apparatus for scheduling downlink packets in a mobile communication system are provided, in which a BS prioritizes MSs, while accounting for types of services provided to the MSs, generates one single-user candidate transmission format and M multi-user candidate transmission formats corresponding to a DRC value received from an MS with a highest priority level, estimates per-slot effective data rates for the single-user candidate transmission format and all of the multi-user candidate transmission formats, and transmits a downlink packet in a candidate transmission format having a maximum per-slot effective data rate.

Abstract: An apparatus for use in a base station capable of checking whether a frequency is illegally used in a wireless communication system are provided. Operations of the base station for checking whether the frequency is illegally used includes setting a silence interval in which a resource is not allocated to a terminal, using silence interval setting information provided from a system manager; when the silence interval arrives, measuring RSSI; and transmitting the RSSI to the system manager to examine at least one of a frequency illegal use and a reception path error using the RSSI.

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: A mobile communication system is provided. A base station includes: a measuring unit for measuring loads of all mobile stations existing within a sector; a first computation unit for computing a sector load by using a Rise Over Thermal (ROT) of the sector; a second computation unit for computing an interference factor, which is a ratio of an interference load caused by an adjacent sector to a corresponding sector load, by using the load of each mobile station and the sector load; and a determining unit for predicting a sector load depending on variation of a reverse data transfer rate of a target mobile station by using the interference factor and for determining the reverse data transfer rate of the target mobile station in a range where the predicted sector load does not exceed a sector threshold load.

Abstract: An apparatus and method for receiving data in a mobile station for a mobile communication system using multi-user packet data are provided, in which a preamble power measurer measures preamble power of the multi-user packet data received from a base station and transmits the result value to a controller. The controller compares the measured power with a predetermined threshold, simultaneously decodes the multi-user packet data according to all transport formats if the measured power is lower than the threshold, and decodes the multi-user packet data according to a predetermined transport format if the measured power is higher than or equal to the threshold. A plurality of decoders decode the received multi-user packet data according to a control signal from the controller, wherein the number of the decoders depends upon the total number of transport formats for the multi-user packet data.

Abstract: A method and apparatus for scheduling downlink packets in a mobile communication system are provided, in which a BS prioritizes MSs, while accounting for types of services provided to the MSs, generates one single-user candidate transmission format and M multi-user candidate transmission formats corresponding to a DRC value received from an MS with a highest priority level, estimates per-slot effective data rates for the single-user candidate transmission format and all of the multi-user candidate transmission formats, and transmits a downlink packet in a candidate transmission format having a maximum per-slot effective data rate.

Abstract: An apparatus and method for accurately measuring the thermal noise power of a silence period and increasing the control efficiency of reverse link load in a mobile communication system. In the received power measuring apparatus, a UPMB measures the received power of the reverse link, accumulates the measured received power, and outputs the accumulated received power as a received power value. A remover compensates the received power value using a time constant if the received power value is for a silence period. A controller provides a silence period signal to the remover when the silence period starts.

Abstract: A mobile communication system is provided. A base station includes: a measuring unit for measuring loads of all mobile stations existing within a sector; a first computation unit for computing a sector load by using a Rise Over Thermal (ROT) of the sector; a second computation unit for computing an interference factor, which is a ratio of an interference load caused by an adjacent sector to a corresponding sector load, by using the load of each mobile station and the sector load; and a determining unit for predicting a sector load depending on variation of a reverse data transfer rate of a target mobile station by using the interference factor and for determining the reverse data transfer rate of the target mobile station in a range where the predicted sector load does not exceed a sector threshold load.

Abstract: A system and method for supplemental channel (SCH) assignment control in a Code Division Multiple Access (CDMA) mobile communication system. Upon request of a Mobile Station (MS) for a SCH, a maximum available data rate is determined which is less than a predetermined data threshold. The MS is notified of the determined maximum data rate. Thus, the SCH is assigned to the MS.

Abstract: An apparatus and method for receiving data in a mobile station for a mobile communication system using multi-user packet data are provided, in which a preamble power measurer measures preamble power of the multi-user packet data received from a base station and transmits the result value to a controller. The controller compares the measured power with a predetermined threshold, simultaneously decodes the multi-user packet data according to all transport formats if the measured power is lower than the threshold, and decodes the multi-user packet data according to a predetermined transport format if the measured power is higher than or equal to the threshold. A plurality of decoders decode the received multi-user packet data according to a control signal from the controller, wherein the number of the decoders depends upon the total number of transport formats for the multi-user packet data.

Abstract: An apparatus and method for controlling a forward data rate by an access terminal in a mobile communication system having at least one access terminal and an access point capable of performing packet data communication with the access terminal. The apparatus and method comprise receiving packet data information including a target packet error rate (PER) from the access point over a forward link channel and decoding the received packet data information; adjusting target PERs for respective data rate control (DRC) values according to the decoded packet data information; selecting one of the adjusted target PERs according to the decoded packet data information, and determining the selected target PER as a target PER for a DRC value to be transmitted; estimating a carrier-to-interference ratio (C/I) for the received packet data information; and determining a DRC value satisfying the determined target PER using the estimated C/I.

Abstract: A method for controlling a Base Station (BS) to control a reverse data transfer rate in a mobile communication system includes the steps of: measuring a total user load value of a reverse link in a sector and an Rise Over Thermal (ROT) value; comparing the measured total user load value with a predetermined load threshold value, and comparing the measured ROT value with a predetermined ROT threshold value if it is determined that the measured total user load value is greater than the predetermined load threshold value; and increasing the data transfer rate if it is determined that the measured ROT value is less than or equal to the predetermined ROT threshold value.

Abstract: An apparatus and method for accurately measuring the thermal noise power of a silence period and increasing the control efficiency of reverse link load in a mobile communication system. In the received power measuring apparatus, a UPMB measures the received power of the reverse link, accumulates the measured received power, and outputs the accumulated received power as a received power value. A remover compensates the received power value using a time constant if the received power value is for a silence period. A controller provides a silence period signal to the remover when the silence period starts.

Abstract: A system and method for supplemental channel (SCH) assignment control in a Code Division Multiple Access (CDMA) mobile communication system. Upon request of a Mobile Station (MS) for a SCH, a maximum available data rate is determined which is less than a predetermined data threshold. The MS is notified of the determined maximum data rate. Thus, the SCH is assigned to the MS.