 and when the PCA has the value 2, ARP-TPC, it is equal to 1 dB. After the recov- ery period, normal transmit power control function resumes using the algorithm speci- fied by the value of PCA and with step size APP When the PCA has 2 as value, slot sets over which the TPC commands are processed remain aligned to the frame bounda- ries in the compressed frame. For both RPP mode 0 and RPP mode 1, if the transmis- sion gap or the recovery period results in any incomplete sets of TPC commands, TPC_cmd = zero for those incomplete slots sets [11]. Table 4.15 Initial Transmit Power (ITP) and Recovery Period Power (RPP) Control Modes DESCRIPTION ARESUME = TPC_cmdgap ARESUME Slast Transmit power control applies using the algorithm deter- mined by the value of PCA with step size ATPC Transmit power control applies using algorithm 1 with step size ARP-TPC during RPL slots after each transmission gap 4.3.6.3 DPCCH Power Control Preamble DCHs can use power control preamble for initialization, and both UL and DL DPCCHs get transmitted during the uplink power control preamble. However, the UL DPDCH does not start before the end of the power control preamble. The network signals the power control preamble length as a UE-specific parameter, where values can take 0 slots or 8 slots. When the preamble length > zero, power control details used during The UTRA Physical Layer Design the power control preamble differ from the ordinary power control used afterwards. The uplink DPCCH change transmit power after the first slot of the power control preamble can be defined as: ADPCCH =Arpcinix TPC_cmd = (4.39) When PCA = 1, then ATPC-init is equal to the minimum value out of 3 dB and 2ATPC; and when PCA = 2, then ATPC-init = 2dB. TPC_cmd is derived according to algorithm 1 re- gardless of the value of PCA. Normal transmit power control with the power control algorithm determined by the value of PCA and step size ATPC, applies as soon as the sign of TPC_cmd reverses for the first time, or at the end of the power control preamble if the powe