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The paper describes the analysis of the DCA initiation process in a UTRA-TDD system based on the interference conditions. The initiation process is controlled by three parameters. The first parameter describes the total packet loss experienced by the user over a time window where the number of packet losses is counted over selected time period. The second parameter determines the threshold of the maximum allowable packet loss the user can have within the time window before DCA is initiated and the third parameter is the time gap between the initiation of the current and the next channel allocation. The analysis plans to achieve the optimum initiation time of DCA to reduce the amount of allowable packet losses.