Detection of anomalies in traffic transmitted by a mobile terminal within a radiocommunication network

摘要

To detect an anomaly in traffic sent by at least one mobile terminal (TM) in a radiocommunication network, a device capable of communicating with a radiocommunication network (RR) location register (HLR) comprises an evaluation module (ME) to increase, for a predetermined time interval, an authentication account (CA) assigned to the mobile terminal when security data (DS) are transmitted to a network unit to authenticate the mobile terminal, to detect an anomaly in the traffic sent by the mobile terminal if the authentication account exceeds a predefined upper limit value upon expiration of the predetermined time interval, and to transmit a message concerning such traffic anomaly to a unit in the network in charge of taking the necessary measures to eliminate the said anomaly.