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16th February 2010 at 12:44 #61093totoGuest
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.16th February 2010 at 13:20 #61094RexGuest
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.
Rex.16th February 2010 at 14:01 #61095totoGuest
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)…16th February 2010 at 15:22 #61096RexGuest
how many TRXs did you activate for GPRS/EGPRS? And how is your SDCCH_DROP rate?
Rex17th February 2010 at 10:46 #61097totoGuest
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…..18th February 2010 at 09:50 #61098RexGuest
What state is parameter PS_PREF_BCCH_TRX in those cells?18th February 2010 at 12:38 #61099totoGuest
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”.