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Extended_TBF_Alcatel

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  • #61093 Reply
    toto
    Guest

    Hi all, is there anybody to use in his Alcatel system the Extended_UL_TBF(IEUTM)feature. And what can be expected effect for KPI’s when the feature is activated?
    ….is there any additional parameters to be changed when the IEUTM is activated?
    Thank you in advance.

    #61094 Reply
    Rex
    Guest

    Hi toto,
    In our network we have activated Extended_UL_TBF in some urban cells. Regarding KPI, UL_TBF drop increased a bit, DL_TBF drop decreased, DL TBF establishment success is better. We did some data tests and Round Trip Time improved (decreased) e.g. pinging google from RTT=around 600 [ms] decreased to RTT=around 300 [ms]. The only drawback I saw is UL TBF Drop increasing, but not too much (from 3.5 % to 5 %) and DL_TBF drop improved (from around 4% to around 3%). Regarding additional parameters I don’t know. I would be grateful if somebody knows whether it’s needed any other parameter.
    Best Regards,
    Rex.

    #61095 Reply
    toto
    Guest

    Hi Rex,
    thank you for answer…
    After the IEUTM activation in our network the TBF_UL_drop is increased as in yours, but the my trouble is that there are some cells that the TBF_UL_drop is increased too much(from 0,95% to 25% in BH)…

    #61096 Reply
    Rex
    Guest

    Hi toto,
    how many TRXs did you activate for GPRS/EGPRS? And how is your SDCCH_DROP rate?
    Regards,
    Rex

    #61097 Reply
    toto
    Guest

    Hi Rex,
    about the SDCH drop, there is no SDCH drop for this TBF_Dropped cell and the number of TRX for GPRS/EGPRS are depends on configuration, but they are more than one…..

    #61098 Reply
    Rex
    Guest

    Hi toto,
    What state is parameter PS_PREF_BCCH_TRX in those cells?

    #61099 Reply
    toto
    Guest

    Hi Rex,
    about your question, more of Dropped cells are with Bcch served TRX(ps_pref_bcch_trx) is 1, but there are cells and with 0 value for “ps_pref_bcch_trx”.

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