COMMUNICATION METHOD, DEVICE AND SYSTEM Russian patent published in 2022 - IPC H04W36/00 

FIELD: wireless communication.

SUBSTANCE: when implementing service transfer between network elements of session control, a network element of mobility control sends information about an initial network element of session control to a target intermediate network element of session control. The target intermediate network element of session control sends the first message to the initial network element of session control based on the specified information. The initial network element of session control indicates, based on the first message, to an initial intermediate network element of a user’s plane to establish a sending tunnel between the initial intermediate network element of the user’s plane and a target intermediate network element of the user’s plane.

EFFECT: providing continuous service of a terminal device.

32 cl, 16 dwg