The construction of 4G network has been basically completed

and the demand for 4G services is gradually increasing

and the frequency resources are particularly valuable. The number of GSM users is gradually decreasing. It is critical to apply the GSM frequency to a high-spectral efficiency network such as LTE

but GSM users cannot completely retire the network. The traditional Refarming scheme allocates GSM and LTE spectrum resources statically. The spectrum sharing scheme can realize the tidal sharing by sharing the dynamic spectrum. On the one hand

the voice resources of the GSM network are guaranteed

on the other hand

the capacity of the LTE network is improved

and the spectrum utilization efficiency of the network is improved overall.