Another one from Qualcomm's 4G World presentation. You can see the number of scenarios that would have to be taken into account for; this was one of the reasons I believed SVLTE may be a good choice.
- Recap of Handover procedures in LTE
- LTE to 3G Handover Procedure and Signalling
- HeNBs (Femtocells) and eNBs Handovers
- Single Radio Voice Call Continuity (SR-VCC)