| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of detecting coverage holes without relying on location information. <P>SOLUTION: There is provided a cell edge coverage hole detection method based on collecting radio link failure (RLF) statistics (S10) provided by multiple UE reports at the handover stage. At a cell edge, the handover point varies for each UE due to the differences in parameter settings and measurement values, giving a statistical distribution of the exact handover point. In the method, RLF reports are grouped by connectivity pattern and a specific cell edge is identified for closer investigation (S20). Hysteresis and/or offsets are varied for UEs at the cell edge and subsequent RLF reports are monitored for changes in tendencies of event sequences (S30). If RLF persists for most of the UEs, the method infers from this the existence of a coverage hole (S40, S60). <P>COPYRIGHT: (C)2012,JPO&INPIT |
