- This topic has 11 replies, 1 voice, and was last updated 3 months, 4 weeks ago by Faryad Mughal.
15th July 2006 at 10:25 #45396ahmedGuest
We are facing the problem with BTS Overload and some of them with reason LAPD overload. The TRX which configured in the site are untill 14 TRXs using 1 PCMB with 1 LPDLM. As we know that the Required LAPD capacity depends on the number of TRx per site and the number of measurement reports (MR)transmitted from the BTSs to the BSC and we also know that the LAPD signalling overload can be also caused by excessive signalling traffic volume or/and frequent retransmission on the LAPD links ( bad tranmission quality of the PCM lines or microwave links ).
For anticipating this problems, What is the recomendation from Siemens about number of TRXs can be handled within 1 LPDLM so we can avoid the overload problem due to LAPD Overload?15th July 2006 at 11:03 #45397MajidGuest
please check your GPRS load,maybe it ‘s using your resourses.30th January 2012 at 15:27 #45398TNTGuest
What is LAPD PAGING OVERLOAD.30th January 2012 at 20:44 #45399pixGuest
it means there are too many paging sent by the BSC to the BTS.
I’m not familiar with your “alarm”, so either the LapD (on the Abis) is congested due to paging, or the PCH (on the air interface) is congested due to paging.
You could try to investigate further, but a solution that would work in both case :
step 1/ ensure that one LAC is handled only by one BSC (one BSC can have many LAC’s, but one LAC should not be handled by several BSC)
step 2/ reduce the number of cells per LAC.
pix1st February 2012 at 10:31 #45400TanujGuest
Plz check the no. of resource LAPD cards present in the BSC, it seems that the no. of TRX have increased too much in the BSC, plz specify the equipment as we have faced such problem in ZTE iBSC
Tanuj30th May 2012 at 18:53 #45401ChouGuest
In technologies that use dynamic Abis and TRX signaling by a common Lapd, this can become congested if it exceeds a certain number of TRX. With a number of 12 TRX is better the creation of a second Lapd and sharing TRX load between them. The maximum number of TRX by Lapd depends on the traffic and signaling load in the air interface, that is on the coverage area that is serving the cell.11th February 2014 at 22:57 #45402Israel ChoqueGuest
anyone have any document for LAPD link Measurement on TRH devices in for Ericsson?
Also require different counter description used for measurement of link i.e. CLONKFAIL, COVERLOAD, CBADFRAME..etc15th February 2014 at 07:44 #45403pixGuest
all those info are in the cpi library, do you have access to it ?
it’s located in the OSS.
regards4th December 2014 at 07:46 #45404jasonGuest
How do I get to clear the LAPD PAGING overload alarm7th January 2016 at 15:35 #45405HospiceGuest
Dear please, I have the same issue. We have upgrad the frequence and have LAPD PAGING OVERLOAD on several node. plaese, help us solve this issue10th February 2019 at 17:11 #45406seph chibanhilaGuest
LAPD Link Congestion what does it mean?how to clear this alarm3rd October 2019 at 09:06 #45407Faryad MughalGuest
plz share you experience that
DCR can effect on LAPD???