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Improve OUTgoing HO

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  • #54728 Reply
    Antapé
    Guest

    I have some cells in my GSM network that have Outgoing HO success too low while target cells are not congested and are normal. please propose me a solution to find the problem and possible solution.

    Thanks!

    #54729 Reply
    Kamaz
    Guest

    Did you check the NSS/BSS declaration for your cells/LAC?

    #54730 Reply
    Antapé
    Guest

    Yes i check and i find that the declaration is good.

    #54731 Reply
    pix
    Guest

    antapé,

    If you’re certain your declarations are good, then it can be either:
    – interference
    – dual BSIC/BCCH
    – poor coverage
    – hardware problem

    What are your curent:
    HO OUTGOING EFFICIENCY RATE ?
    HO OUTGOING PREPARATION SUCCESS RATE ?

    Regards,
    pix

    #54732 Reply
    Host
    Guest

    in the same topic, what are the reasons for low HO attempts (>=200 HO)at MSC borders. i think it’s a matter of declaration but i will further explanation. thanks

    #54733 Reply
    Antapé
    Guest

    HO OUT EFFICIENCY RATE is low also but i don’t have the indicator: OUT HO PREPARTION SUCCESS RATE.

    #54734 Reply
    Kamaz
    Guest

    This KPI depend on providers. For exemple we dont have OUT HO PREPARTION SUCCESS RATE on NSN. But for this case we have an execution Pb (low HO OUT EFFICIENCY RATE): It can be like what pix said:
    – interference
    – dual BSIC/BCCH
    – poor coverage
    – hardware problem

    Juste a question: for the target side, what is the worst KPI for HO Inc (HO Inc Fail due to ?)

    #54735 Reply
    pix
    Guest

    antapé, are you working with alcatel ? in this case, you have this indicator in RNO…
    Check out the indicators, per family “Outgoing HO Internal & External > Preparation > Success Rate”

    Please give me numerical values 🙂

    Best Regards,

    #54736 Reply
    Antapé
    Guest

    Yes i am working with alcatel but my company did not purchase RNO

    #54737 Reply
    Host
    Guest

    any feedback about my last item.

    #54738 Reply
    Pix
    Guest

    but you do have NPA, right ? Open NPR > DICO > GRAPHIC > PM VIEWER
    The indicators are called HOORRQGR and HOOREFGR

    Also, thanks to Adjacency indicators, you could find out which is the “faulty” neighbor (in other words, towards which neighbor the HO are failing the most)

    #54739 Reply
    MAS
    Guest

    Delete the nighbours and create it againe,i will tell u the problem name if it is fixed, so please feed me back.

    #54740 Reply
    Antapé
    Guest

    I check with PM viewer and i see that in out the preparation rate is about 98% but in Inc it is 20%without no congestion and less interference.
    Coverage issue perphaps???

    #54741 Reply
    Pix
    Guest

    20% Incoming HO Preparation success Rate ?

    Ok, so the problem is either:
    – congestion in the cell
    – hardware problems

    Since you say there is no congestion, then you should focues on the hardware (or even the BSC database). I suggest you delete all neighbours and recreate them, even delete the cell and recreate it.
    You can ask the local TAC to have a look to your BSC database.

    If it’s still not working, try changing the SUM card (perhaps… but i’m not sure)

    #54742 Reply
    Antapé
    Guest

    I forgot to tell u that the distance between the 2 cells are about 20 Km. *
    I recreate the handover definition and i ‘ve got same result.
    Any suggestion???

Viewing 15 posts - 1 through 15 (of 16 total)
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