With the development of LTE network

VoLTE traffic continues to transfer

and the proportion of voice traffic and voice service in GSM continues to decline. At the same time

operators have successively completed FDD and NB-IoT network deployment in the GSM 900 MHz band

and the 900 MHz band has witnessed the coexistence of GSM

FDD LTE and NB-IoT

resulting in further shortage of frequency resources. This paper studies the ways of improving the wireless utilization rate of GSM network. By effectively improving the utilization rate of GSM network resources

it provides space for the carrier frequency voltage drop and frequency compression of the existing network

and prepares for the smooth evolution of the subsequent network.