METHOD OF RE-ESTABLISHING THE PDN CONNECTION, CENTRAL RESET SERVER, MOBILITY MANAGEMENT NETWORK ELEMENT AND DATA TRANSMISSION GATEWAY Russian patent published in 2018 - IPC H04W92/24 

FIELD: instrument engineering.

SUBSTANCE: invention relates to the re-establishment of a PDN connection. For this purpose the following is provided: receiving, by the central server of the reset, of the first message, which is sent by the data gateway, where the first message includes the first identification information; determining, by the central reset server according to the first identification information, the mobility management network element identifier corresponding to the first identification information; and sending, via the central reset server, the second message to the mobility management network element, which corresponds to mobility management network element identifier, where the second message includes the subscriber unit identifier, so that the mobility management network element re-establishes a connection over the packet data network (PDN) of the subscriber unit according to the second message.

EFFECT: technical result is the elimination of failure of the performed voice call.

37 cl, 17 dwg