SESSION PROCESSING METHOD, COMMUNICATION DEVICE AND COMMUNICATION SYSTEM Russian patent published in 2023 - IPC H04W76/00 H04W36/00 

FIELD: communication; session processing method; a communication device; a communication system.

SUBSTANCE: according to the session processing method, a request message from the intermediate session management function is received (S310) by the session management anchor function, which contains the session identifier. The intermediate session control function is a session control function connected to the access and mobility control function and is intended to serve the UE when the UE moves outside the coverage area of the anchor session control function. In response to determining that the session corresponding to the session ID is a data local area network session, the session is disconnected (S311) by the session management anchor function. The coverage area of the data local area network corresponding to the session of the data local area network is in the coverage area of the session management anchor function.

EFFECT: correct communication in the presence of two session management functions (SMF).

14 cl, 17 dwg