hi all
i am trying to do a research about LTE femtocell in the following filed:
1. SON {self organized network} Or
2. IMS{IP multimedia subsystem} ((where signalling (SIP) between femtocell and EPC will be studied))


so i confused which simulator or emulator can support my research
can you tell me which software can help me to do my research? for each case above.
thanks