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TBF Congestion Rate

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  • #53039 Reply
    bara
    Guest

    Is there any body to know, how we can decrease the TBF_Estbl_Congestion rate in UL direction for Siemens_BR9 systems.
    During last 3 month a high value of TBFEstCongRateUL and low value of TBFsuccessfulRate is monitored in some of BSC’s…
    We were check all parameters related to the GPRS KPI’s, but we can’t find the problem…
    In all cells there are configured one or two static PDCH and more than 4 dynamic PDCH.
    In more of them there is no high voice and data traffic and this BSC has independent LAC and RAC/RACOL areas.
    The Load of PCU is between 60% and 80% and BSC has to PCU’s.
    There is cells with high value of TBF blocking rate and the successful rate also is high …
    Please give us any idea about this problem.
    Thank you in advance !

    There are high values of TBF Blocking in uplink direction for some cells in the BSC’s, but (what/where) is the problem. I check all possibilities, but I can’t resolved this problem… ((

    #53040 Reply
    R
    Guest

    hi bara

    could you be a little specific ?
    Is it TBF congestion or TBF drop??

    Are you having this problem in only UL ?
    What is the status for DL ?

    #53041 Reply
    R
    Guest

    hi Pix

    Can you help me in resolving the high TBF drop rate with tuning of some GPRS/EDGE related parameters .

    thnx in advance

    #53042 Reply
    bara
    Guest

    The problem is with high value of TBF_Establishment_failure rate(TBF loss rate) and low value of TBF_Establishmen_success rate in Uplink direction.In the downlink there is no blocking.What is the relation between these two parameters, because there are cells with (low_success and high_failure) and cells with (high_success and high_failure)?
    Thank you in advance.

    #53043 Reply
    bara
    Guest

    In DL also there failure but there are less than in UL…

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