 output power of -28 dB or less. By total power dynamic range we mean the difference between the maximum and the minimum total transmit output power for a specified reference condition. In this case, the upper limit of the dynamic range is the BS maximum output power and the lower limit the lowest minimum power from the BS when no traffic channels are activated. The DL total power dynamic range is 18 dB or greater [3]. We call Primary CPICH power to the transmission power of the common pilot channel averaged over one frame and indicated in a BCH. This power is within + 2.1 dB of the value indicated by a signalling message [3]. The UMTS Network and Radio Access Technology In TDD, the power control dynamic range, i.e. the difference between the maximum and the minimum transmit output power for a specified reference condition has a DL minimum requirement of 30 dB. The minimum transmit power, i.e. the minimum con- trolled BS output power with the power control setting set to a minimum value, has DL maximum output power of -30 dB. The primary CCPCH power is averaged over the transmit time slot and signalled over the BCH. The error between the BCH-broadcast value of the primary CCPCH power and the primary CCPCH power averaged over the time slot does not exceed the values illustrated in Table 5.11. The error is a function of the total power averaged over the timeslot, Pout and the manufacturer's rated output power, PRAT [4]. Table 5.11 Errors Between Primary CCPCH Power and the Broadcast Value (TDD) Total power in slot (dB) PCCPCH power tolerance (dB) PRAT-3<PoutPRAT+ 2 PRAT-6<Pout<PRAT-3 5.3.4 Out-of-Synchronization Output Power Handling The UE monitors the DPCCH quality to detect L1 signal loss. The thresholds Qout and Qin specify at what DPCCH quality levels the UE shall shut its power off and when it may turn its transmitter on, respectively. The thresholds are not defined ex- plicitly, but are defined by the conditions under which the UE shuts its transmitter off and turns it on. DPCCH_Ec/Ior[dB] [-4.6]TDD [-6]TDD 