Abstract: Disclosed is a technology for easy balancing between cells by securing a cell balance, using an optimization process adopting a radio parameter as a parameter of an objective function. Objective function extractor 11 sets up optimizing condition at least including an objective function that has a radio parameter of a base station as the objective function parameter and is used for an optimization process to balance traffic loads between cells, using cell balance values between a target cell whose characteristic changes by modification of the parameter and neighboring cells existing around the target cell. Optimizer 12 performs an optimization process in accordance with the optimizing condition set by objective function extractor 11 to determine the value of the parameter to be the solution.

Abstract: The present invention is directed toward realizing a radio parameter determination method for improving values indicating the communication service quality of important areas in a radio communication system. The configuration of the present invention includes: a second step for determining a second radio parameter based on the first radio parameter and the weighted sum of values indicating communication service quality in, as regards the areas in which a plurality of radio base stations are arranged, a first area and second area to which first weighting values have been conferred; a third step for accepting a limitation condition related to the weighted sum; and a fourth step for determining a third radio parameter based on the limitation condition accepted in the third step, the weighted sum of the value indicating service quality of the first area and second area to which second weighting values that differ from the first weighting values have been conferred, and the second radio parameter.

Abstract: A wireless communication, in which mobile and base stations setup uplink and downlink channels, and the mobile station transmits data flows. The base station interrupts transmission via the downlink setup with the mobile station in the predetermined transmission interruption time interval. The mobile station determines, in response to the data flow, packet transmission in a first transmission time interval for the predetermined time interval determined from the transmission interruption time interval or re-transmission of the packets transmitted in the first transmission time interval. The mobile station transmits packets in response to the determination. The base station transmits an arrival confirmation signal for the transmitted packets. The mobile station performs re-transmission in response to the arrival confirmation signal or to the determination.

Abstract: When an RG received from a base station is UP, a mobile station compares E-TFC currently used by a HARQ process for transmitting a signal to the base station from the mobile station with E-TFC previously used for transmission by the same HARQ process. When they are identical, the accumulation information is incremented by one. When selecting E-TFC used for transmission, the HARQ process of the mobile station tales the accumulation information into consideration. Thus, when the accumulation is incremented, the HARQ process selects E-TFC of a level incremented by one and accordingly, the transfer rate of the mobile station is increased and the user throughput is improved.

Abstract: A method for deciding radio parameters that improve a value indicative of the communication service quality of an important area in a wireless communication system. The constitution of the present invention comprises a second step of deciding a second radio parameter, based on the first radio parameter and the weighted sum of the values indicative of the communication service qualities in first and second ones, to which a first weight value is applied, of areas in which a plurality of radio base stations are located; a third step of accepting the constraints related to the foregoing weighted sum; and a fourth step of deciding a third radio parameter, based on the second radio parameter, the constraints accepted in the third step, and the weighted sum of the values indicative of the service qualities in the first and second areas to which a second weight value, different from the first weight value, is applied.

Abstract: Disclosed is a technology for easy balancing between cells by securing a cell balance, using an optimization process adopting a radio parameter as a parameter of an objective function. Objective function extractor 11 sets up optimizing condition at least including an objective function that has a radio parameter of a base station as the objective function parameter and is used for an optimization process to balance traffic loads between cells, using cell balance values between a target cell whose characteristic changes by modification of the parameter and neighboring cells existing around the target cell. Optimizer 12 performs an optimization process in accordance with the optimizing condition set by objective function extractor 11 to determine the value of the parameter to be the solution.

Abstract: A wireless communication, in which mobile and base stations setup uplink and downlink channels, and the mobile station transmits data flows. The base station interrupts transmission via the downlink setup with the mobile station in the predetermined transmission interruption time interval. The mobile station determines, in response to the data flow, packet transmission in a first transmission time interval for the predetermined time interval determined from the transmission interruption time interval or re-transmission of the packets transmitted in the first transmission time interval. The mobile station transmits packets in response to the determination. The base station transmits an arrival confirmation signal for the transmitted packets. The mobile station performs re-transmission in response to the arrival confirmation signal or to the determination.