dear emre
the meaning of Hard handover is mean that when the mobile send handover coammand and get handover complete it will move from the source cell to target cell but ( no more relation to sourse cell) which this kind of handovr is exist in 2g and for the soft handover is the same prcedure as before but it will be in cantact with source cell which it exist is 3g it look like chain with out break but is 2g the chain is breaking