ParaHO,
You mean in dedicated mode ? The cell on which is the call can have a lower RXLEV than the neighbors, because of the capture HO’s mechanism.
For instance, HO will push a call from a 900 cell with good level to a 1800 cell with lower level.
If no capture HO, it can be traffic HO : the cell A with good level is high loaded (or even congested), so the cell B will carry the call, even though its level for this MS is lower than cell A.