So the chosen neighbour is:
N3: Freq 8[ 5] Level -84 dBm BSIC15(dec) 17(oct)
Are the two other cells in different frequency bands, or in different layers, or congested ?
Then you must tell me what are the bands/layers of serving cell and each neighbour.
RxLev(serv) = ? (-70dBm ??)
What is BCCH/BSIC of serving ?
In the HO CMD message : what is the target ARFCN (just after the BCCH/BSIC info). Is this ARFCN indeed a TCH frequency in the target cell ?