APPARATUS, SYSTEM AND METHOD FOR DETECTING ABNORMAL MESSAGE FOR OBTAINING LOCATION INFORMATION BASED ON VOLTE SERVICE IN 4G MOBILE NETWORKS

摘要

An apparatus for detecting an abnormal message for obtaining location information includes a packet information extracting unit, a session information storing unit, a packet analyzing unit, and a packet processing unit processing the GTP-U packet according to a first detection policy when the destination IP of the first SIP REFER message is not in the server band and the first SIP REFER message contains the cell ID.