Baseband 6630 RRC Establishment Failures: DU Problem or Something Else?

4G LTE
, ,
1

Hello experts,

I’m troubleshooting an Ericsson LTE FDD site with a Baseband 6630 showing consistently high pmRrcConnEstabFailDuIntens values.

Has anyone dealt with this KPI before? I’m interested in understanding the most common root causes and a practical troubleshooting sequence.

Things I’m considering include:

  • Cell congestion or PRB exhaustion

  • License or hardware resource limitations

  • DU/baseband overload

  • RF issues affecting the RRC establishment procedure

  • Transport or synchronization problems

  • Software defects or known Ericsson issues

Which counters, logs, or MOSHELL commands would you check first? Are there any Ericsson-specific KPIs that usually point directly to the root cause?

Baseband 6630 RRC Establishment Failures: DU Problem or Something Else?
Baseband 6630 RRC Establishment Failures: DU Problem or Something Else?460×470 62.4 KB

2

Hello,

This counter is related to Baseband Connections Intensity Control. It is a load protection mechanism. It ensures that only a predefined number of initial establishments and incoming handovers are processed within a certain time frame. To guarantee that the connections handling in eNB always works as intended, a load protection mechanism is included. This limits the number of simultaneous initial establishments and incoming handovers processed within a certain time

To check:

  • handovers
  • initial estab.