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HSDPACPICHEcNoThreshold: determines the absolute CPICH Ec/No threshold for the serving HS-DSCH cell change procedure. If the value of the CPICH Ec/No measurement in the serving HS-DSCH cell is above the threshold, serving HS-DSCH cell change is not initiated due to CPICH Ec/No reason.

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Required parameter settings Dynamic HS-PDSCH power allocation disabled Fixed HS-PDSCH power defined with PtxMaxHSDPA

Slow adjustment of HS-PDSCH power PHS-PDSCH due to HS-SCCH power consumption

Total HSDPA power PHS-PDSCH + PHS-SCCH checked against PtxMaxHSDPA If threshold exceeded, PHS-PDSCH reduced by hardcoded step If total HSDPA power below PtxMaxHSDPA - 2 dB, PHS-PDSCH increased by

hardcoded step

Recommendations: if 20 W carrier shared by R99 & HSDPA users no higher total throughput for

PtxMaxHSDPA > 6W

if carrier dedicated to HSDPA users only, PtxMaxHSDPA can be set to max. cell power

Required parameter settings HSDPAPriority (settable on RNC level only) priority for HSDPA vs. R99 NRT users in case of high load

modified R99 Load Target with PtxTargetHSDPA [dBm] PtxMaxHSDPA & PtxTargetHSDPA should be selected that maximum cell power - PtxTargetHSDPA > PtxMaxHSDPA

otherwise the former limits the HSDPA power

modified R99 Overload Threshold for R99 with PtxOffsetHSDPA (set relative to PtxTargetHSDPA in dB)

all these parameters are ignored using dynamic HS-PDSCH power allocation

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