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LAPD Overload

Viewing 12 posts - 1 through 12 (of 12 total)
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  • 15th July 2006 at 10:25 #45396
    ahmed
    Guest

    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 #45397
    Majid
    Guest

    please check your GPRS load,maybe it ‘s using your resourses.

    30th January 2012 at 15:27 #45398
    TNT
    Guest

    Hi,
    What is LAPD PAGING OVERLOAD.

    30th January 2012 at 20:44 #45399
    pix
    Guest

    hi,

    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.

    cheers
    pix

    1st February 2012 at 10:31 #45400
    Tanuj
    Guest

    Hi Ahmed

    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

    Regards
    Tanuj

    30th May 2012 at 18:53 #45401
    Chou
    Guest

    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 #45402
    Israel Choque
    Guest

    Hi,

    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..etc

    15th February 2014 at 07:44 #45403
    pix
    Guest

    hi,

    all those info are in the cpi library, do you have access to it ?
    it’s located in the OSS.

    regards

    4th December 2014 at 07:46 #45404
    jason
    Guest

    hi!
    How do I get to clear the LAPD PAGING overload alarm

    7th January 2016 at 15:35 #45405
    Hospice
    Guest

    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 issue

    10th February 2019 at 17:11 #45406
    seph chibanhila
    Guest

    LAPD Link Congestion what does it mean?how to clear this alarm

    3rd October 2019 at 09:06 #45407
    Faryad Mughal
    Guest

    Dear all
    plz share you experience that

    DCR can effect on LAPD???

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