LTE OPTIMIZATION - Difficulties in IRAT (LTE -> 3G/UMTS) need HELP

[anita_2k]

Dear members, seeking assistance on this situation in LTE...
also, LTE Sites/Cells have high counts of "ISYS_HO_UTRAN_PREP_FAIL_TIM_NB"
in case anybody there which experienced the same scenario?
maybe you can recommend new parameter sets?

thanks alot
Anita

[qarmates]

Anita,

can you test this parameter set:

LNHOW_b2Threshold1Utra	23
LNHOW_b2Threshold2UtraEcn0	20
LNHOW_b2Threshold2UtraRscp	15
LNHOW_b2TimeToTriggerUtraMeas	10
LNHOW_hysB2ThresholdUtra	4
LNHOW_lnHoWId	1 for F0 layer; 2 for F1 layer
LNHOW_offsetFreqUtra	0
LNHOW_reportIntervalUtra	2

[qarmates]

Oh sorry Anita

Threshold1 UTRA for RSRP of serving cell	23
Threshold2 UTRA for ecNo neighbour cell	20
Threshold2 UTRA for RSCP neighbour cell	15
Time to trigger UTRA measurement report	512ms
Related hysteresis thresholds B2Th1, B2Th2 HO WCDMA	2
Neighbor WCDMA BTS cell handover identifier	1 for F0 layer; 2 for F1 layer
Utran offset frequency	0
Interval for periodical UTRA measurement reporting	480ms

Its L2600 EnodeB?

[anita_2k]

sorry, i posted 2 the issue on 2 thread.
i will try your parameter set recommendation.

thanks again.
br/Anita

[anita_2k]

Hello all, hope this helps.

sorry, late reply.
i tried your first recommendation but the attempts diminished.
then i've got dump file from other region and applied it as well, here are the results.
Hourly (green BG)
Daily excel Pivot
Parameter set 1 and 2 also on attachment for others reference.

thanks
Anita

[anita_2k]

by the way, IRAT SR was a bit improved...
also just to mention, both parameter set, we eliminate ISYS_HO_UTRAN_PREP_FAIL_TIM_NB.
i would say, i'll go with parameter set 2 due to IRAT Attempts was intact (not diminished) compared to the other set.
if anybody still has better values/results, please help to share.

thanks
Anne

[qarmates]

Hi Anita,

Ok for the issue but its L2600 with 3G 2100 neigbour or L800 with 2G?
release Sw is RL30 or 40?

BR

[qarmates]

Sorry its IRAT 3G with LNHOW
I ll check my parameters tomorrow

BR

[anita_2k]

yes,qarmates, IRAT is going to 3G.
while the parameters are LNHOW.
release was still RL30.

[qarmates]

Hello,

So il check in my configuration RL 30 with LNBTS 2600 with Neigbour U2100.
I have :L2600 parmeters.jpg