Turning up the transmit power or utilizing a highgain antenna to reach wireless users from a distance increases your exposure to?
Turning up the transmitter power is a good way to insure that
more cellphones, farther away, can hear the base station. But it
doesn't to anything to help the base station hear the cellphones
that are farther away. The only way to increase the coverage range
reciprocally is to do something with the antenna. But that's a
catch-22 . . . a higher-gain antenna has a narrower beam-width. So
it works farther out, but only through a narrower 'window' of
directions.