METHOD OF TRANSMITTING SERVICE BETWEEN NETWORKS, DEVICE AND SYSTEM Russian patent published in 2017 - IPC H04W36/00 

FIELD: radio engineering, communication.

SUBSTANCE: in the method of transmitting service between networks, after the user equipment (UE) in the LTE network initiates a request message to request transition to the circuit-switched CSFB, the MME instructs the eNB to move the UE from the LTE network to the 2G network or 3G network, and requests the MSC to carry out the transmission of the UE from the LTE network to the CS area of the 2G network or the 3G network for the CSFB, so that the 2G network or 3G network assigns the CS area resource to the UE equipment, where the CS area resource is used for the UE to transmit service from the LTE network to the area CS of the 2G network or the 3G network so that the UE can perform service transmission to the PS area of the 2G network or the 3G network by transmitting service from the LTE network to the CS area of the 2G network or the 3G networks.

EFFECT: reducing the access delay, when the user equipment accesses the CS area of the 2G network or 3G network, reducing the duration of the entire voice call.

15 cl, 13 dwg