IF U GETTTING GOOD COVERAGE SAY -50dbm ON HIGH RISE BUILIND THEN U CAN GO WITH BOOSTER SITE-WHICH MEANS ONE KIND OF IBS-REPEATER THAT MENAS U USE SOME SIGNAL FRM THE NEARBY STRONGEST SERVER SITE,IT CAN HELP U REDUCE UR PROBLEM BUT IT IS IN LIMITED AREA ONLY SO IF IT IS BIG PREMISES OR BIG AREA OF THE OFFICE U SHOULD GO FOR THE NEW SITE OF INDOOR BUILIND SITE WITH TIEGHT FREQ PLANNING.