That’s one of the first thing I try to say to optimizers : the timing advance is not an information that is used by any “radio” mechanism. It is just seen in 2 handovers causes, but that’s it.
I believe that, for most vendors, the power control is based solely on the RxLev/RxQual and not at all on the Timing Advance. You can have a very low RxLev while being less than 500m from the antenna (indoor MS, for example).
Of course, some vendors might choose another solution, but the TA … I don’t think it could work efficiently.
Needless to say, nobody won this one ! You have another question ?