UltranCell_RncNotAbleToScheduleSibs Alarm

[juanpico]

Experts

Any idea what is the cause of "UltranCell_RncNotAbleToScheduleSibs" alarm causing the UCell not to cater traffic. Done software reset through NOC and hardware on nodeB side.

[fantominox]

Hi,
you have exceeded SIB11 capacity, now decrease number of neighbors -> just delete unnecessary ADJC (never mind if interfreq, intrafreq or interrat), cell will work again.

Best regards

Fantominox

if usefull add rep

[uchok]

Hi, I've had this problem also, and yes it's because you have exceeded number of neighbor. Need to delete some neighbor.
This is taken from ALEX :


Alarm Cause
Description
Fault Reason
Fault Location
Impact


A system information scheduling failure due to incorrect sib*RepPeriod or sib*StartPos setting in the Sid object.
The Radio Network Controller (RNC) is not able to schedule sending of System Information Blocks (SIBs) to the User Equipment (UE).
Configuration fault.
UtranCell
The RNC disables the cell, and traffic ceases. The RNC automatically re-enables the cell and, if the fault is still present, the alarm is reissued.


The amount of information to be sent in SIB11 exceeds the SIB size limit as a result of automatic addition of adjacent cells, or parameter reconfiguration in the RNC.