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BSC KPIs

Viewing 8 posts - 1 through 8 (of 8 total)
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  • #59999 Reply
    suresh
    Guest

    Dear All,
    Good Morning,

    We have checked all the parameters related to TCH & SDCCh drop in our BSCs.

    We cannot find the reason for the drop.

    When we give the restart to our system than drop is normal for 2 to 3 days but after that problem is repeat.

    Kindly suggest if any solution is available for this isuues.

    #60000 Reply
    Pix
    Guest

    Suresh,

    The cause of the drop is either a hardware problem or a software unstability in the hardware.

    Hardware could be : in the BTS, the BTS itself, the Abis equipment, the Abis radio link, the BSC boards, the connections, etc.

    On how many cells do you see the high call drops ?

    cheers
    pix

    #60001 Reply
    Arjin
    Guest

    Hi pix,

    what are BSS Call Drop RTC (Remote TC) causes?

    #60002 Reply
    Pix
    Guest

    Arjin,

    Any hardware failure in the BSS will generate RTC call drops.
    (TRX fail, SUM fail, Abis fail, BSC fail, TC fail, Ater fail, …)

    The “Internal BSS” drops are linked to O&M actions (reset, lock/unlock) or weird software bugs.

    Cheers,
    pix

    #60003 Reply
    Arjin
    Guest

    thanks pix,

    we faced High RTC Drops due to High Traffic during sport events in some stadiums, is this also related to HW failure?

    #60004 Reply
    Pix
    Guest

    It only happens when high load of traffic ?

    Then the failure is probably linked to a board congestion. It’s not really a HW failure. You’re just outside the nominal use of the boards.

    The board cannot handle more calls and drops on-going ones. Or something like this.

    Could you compare your traffic carried by the whole BSC at BH with its capacity (check the BSC configuration, number of CCP boards, or TCU / DTC boards, etc)

    #60005 Reply
    Arjin
    Guest

    I’am talking about some cells and not the whole BSC.

    #60006 Reply
    Pix
    Guest

    And those cells are always the same ? So in your case : congested cell = cell with high RTC.

    So you must look at a problem in the BTS itself. Have you done any drive tests or A-trace analysis ?

    Are you using AMR ?

    In which release ?

    I’ll try to find a related problem later.

    Best Regards,

Viewing 8 posts - 1 through 8 (of 8 total)
Reply To: BSC KPIs
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