To be more clear….
the case being discussed here is of outdoor BTS sites. My vendor engineer(Nokia)has attenuated the power of BTS sites ranging from 4dB to 8dB. The cells(where power is attenuated) had poor indoor coverage.
The excuse given by Nokia is to prevent overshooting.
My theory is..if you are having overshooting then increase the tilt.And if the problem still persists then ask the vendor to reduce height. And this time he has no excuse as he is the one who has planned the height.
Prevention of overshooting at the cost of indoor coverage is NO.