Retainability KPI

 Retainability is defined as the ability of a user to retain the E-RAB once connected for the desired duration.

Retainability Investigation :

Major Reasons  for Poor Retainability :

1. Poor Coverage.
2. Alarms
3. High Load(High traffic)
4. Hardware issue(Reset first),if required replace RRU.
5. VSWR over threshold.
6. HO failure: If a sector is having high HO Execution fail, it results in poor retainability.  

Probable Solution :The counter pmErabRelAbnormal/EnbActHo is checked. If this counter is pegging high, it implies poor retainability and resolution of sector HOSR is required.