COMMUNICATION METHOD, NETWORK ELEMENT OF SAFETY ASSURANCE UNIT AND TERMINAL

摘要

FIELD: data processing and transmission.;SUBSTANCE: invention relates to communication. Technical result consists in improvement of safety of data transmission of user plane or control overhead signals due to that data packet transferring control overhead signals, and data packet carrying data of user plane, which are located between network element of safety assurance unit and terminal, respectively, are transmitted through different connections, security assurance node identifies whether the data packet carries control service signals or user plane data without the need to use a target IP address which is in the data packet and which the malicious application may modify, and identifies, by using the connection identifier to secure the non-stored level, the network layer or the transport layer, data packets sent by different connections.;EFFECT: high security of user plane data transmission or control overhead.;38 cl, 12 dwg