BTS power control works in such a way that all MS will measure the same RxLev from the BTS.
For instance, all MS receives -85dBm.
For a MS near the site, BTS puts an attenuation of 30dB on the DL TS allocated to this MS.
for a MS far away from the site : the BTS puts -10dB attenuation
for a MS very far away : the BTS puts 0dB attenuation (= full Tx Power)
Each TS is therefore sent with a different power. Yes, the BTS is able to modify the Tx Power timeslot per timeslot, for each TRX independently.
Woaw, that’s a tough job 🙂