to detect ping pong HO, you can have a look to the QoS indicators such as :
– HO per call
– TCH duration
It highly depends on your layer architecture : do you have multi-layers (umbrella, mini, micro, …) ?
or if the cell is covering roads or highway (that generates more HO)
HO per call should be less than 5, but in certain conditions, having up to 10 is accepted (umbrella cells, micro cells, highway cells)
The RTCH duration should be at least 20 or 25 seconds, but in some cells (cf. above) it can be down to 10 or 12 seconds.