Probe is an air interface test tool, mainly used to collect LTE network air interface test data.
The UE can obtain the physical cell identity after decoding the primary synchronization signal PSS.
E-UTRAN to GERAN different system switching has five switching strategies: PS HO, CCO/NACC, SRVCC, redirection and fast redirection.
In order to support the CSFB function, the SGS interface is not necessary.
Regarding the demodulation reference signal, which of the following statements are correct? (multiple choice)