8.5.3 Open loop power control upon establishment of DPCCH

25.3313GPPProtocol specificationRadio Resource Control (RRC)Release 17TS

This procedure is used in FDD mode only.

When establishing the first DPCCH in CELL_DCH the UE shall start the UL inner loop power control at a power level according to:

1> DPCCH_Initial_power = DPCCH_Power_offset – CPICH_RSCP

Where

DPCCH_Power_offset shall have the value of IE "DPCCH Power offset" in IE "Uplink DPCH power control info"

The value for the CPICH_RSCP shall be measured by the UE.

When establishing the DPCCH in CELL_FACH state or Idle mode the UE shall start the UL inner loop power control at a power level according to:

1> DPCCH_Initial_power = P_preamble + "Power offset Pp-e"

Where

– P_preamble is the power of the last transmitted preamble and "Power offset P p-e" power offset between the last transmitted preamble and the initial power of the DPCCH transmission in the Enhanced Uplink in CELL_FACH state and Idle mode.