Method for detecting cell disconnection and locating disconnected cell in SON of cellular mobile communication system

A method for detecting cell disconnection and locating a disconnected cell in a Self-Organizing Network (SON) of a cellular mobile communication system, comprising:

• in a monitoring region including multiple cells, reporting, by User Equipment (UE), Key Performance Indicator (KPI) parameters and location information to an evolved Node B (eNodeB) when triggering an A3 event representing that Quality of Service (QoS) of a neighboring cell is better than a predefined offset of a serving cell;
• reporting, by the eNodeB, the KPI parameters and the location information to an Operation Administration and Maintenance (OAM) device in each monitoring cycle;
• and
• classifying, by the OAM device, UEs according to the KPI parameters and a cluster analysis method;
• determining according to a cluster analysis result whether there is a disconnected cell in the monitoring region;
• when determining that there is a disconnected cell in the monitoring region, counting disconnected cells, determining disconnection types of the disconnected cells, locating the disconnected cells according to the location information of the UEs in the SON, and triggering a compensation measurement for each disconnected cell according to the disconnection type of the disconnected cell.