nge executes stepwise variation in the DL transmitter output power of a code channel in response to a corresponding power control command. The aggregated output power change represents the required total change in the DL trans- mitter output power of a code channel while reacting to multiple consecutive power control commands corresponding to that code channel. The BS transmitter will have the capability of setting the inner loop output power with a step size of 1 dB mandatory and 0.5 dB optional [3]. The power control step and the aggregated output power change due to inner loop power control shall be within the range illustrated in Table 5.9. The UTRA Transmission System In TDD, power control steps change the DL transmitter output power in response to a TPC message from the UE in steps of 1, 2, and 3 dB. The tolerance of the transmitter output power and the greatest average rate of change in mean power due to the power control step will remain within the range illustrated in Table 5.10. Table 5.9 FDD Transmitter Power Control Steps and Aggregated Output Power Change Range Power control commands in the Transmitter power control step range down link 1 dB step size 0.5 dB step size Lower Upper Lower Upper Up (TPC command "1") +0.25 +0.75 Down (TPC command "0") -0.25 -0.75 Transmitter aggregated output power change range after 10 consecutive equal commands (up or down) 1 dB step size 0.5dB step size Lower Upper Lower Upper Up (TPC command "1") Down (TPC command "0") Table 5.10 TDD Power Control Step Size Tolerance Step size Tolerance Range of average rate of change in mean power per 10 steps Minimum Maximum +0.5dB +12dB +0.75dB +16dB +24dB +24dB +36dB 5.3.3.2.2 Power Control Dynamic Range and Primary CPICH-CCPCH Power We refer to the difference between the maximum and the minimum transmit output power of a code channel for a specified reference condition as the power control dy- namic range. This range in the downlink (DL) has a maximum power BS maximum output power of -3 dB or greater, and minimum power BS maximum