Bijoy,
“PBGT HO doesn’t takes place when the power control is taking place for the call,PBGT HO takes place only when the call is within the power control window(when no power up or power down is taking place).”
for info : That is a very very strange behaviour. Definitely not happening in ALU. Are you sure about that?
The PBGT HO algo is taking into account the power control attenuations (= the PC effect on the RXLEV is cancelled), so PC is completely transparent in the PBGT HO.