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TBF Establishment Failure Rate :

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Ayat - 19th March 2017  (16:52 GMT)

LEMAURE

Ratio of Uplink TBF Establish Link successfully (%)
=([Number of GPRS UL signaling TBF establishment]+[Number of EGPRS UL signaling TBF establishment]+[Number of GPRS UL data TBF establishment]+[Number of EGPRS UL data TBF establishment]+([ Number of GPRS UL TBF resource reallocation requests due to LLC transmission]-[ Number of GPRS UL TBF resource reallocation failure due to LLC transmission])+([ Number of EGPRS UL TBF resource reallocation requests due to LLC transmission]-[ Number of EGPRS UL TBF resource reallocation failure due to LLC transmission])+([ Number of GPRS UL TBF resource reallocation requests due to DL TBF establishment]-[ Number of GPRS UL TBF resource reallocation failure due to DL TBF establishment])+([ Number of EGPRS UL TBF resource reallocation requests due to DL TBF establishment]-[ Number of EGPRS UL TBF resource reallocation failure due to DL TBF establishment])+[ Number of GPRS UL TBF resumption in extend uplink state]+[ Number of EGPRS UL TBF resumption in extend uplink state])/ ([Number of GPRS UL TBF establishments in release state]+[Number of GPRS UL TBF establishment with existing UL resource]+[Number of GPRS UL TBF establishment requests on PACCH]+[Number of GPRS UL TBF establishment requests on request CCCH/PCCCH]+[Number of EGPRS UL TBF establishments in release state]+[Number of EGPRS UL TBF establishment with existing UL resource]+[Number of EGPRS UL TBF establishment requests on PACCH]+[Number of EGPRS UL TBF establishment requests on CCCH/PCCCH]+[ Number of GPRS UL TBF resource reallocation requests due to LLC transmission]+[ Number of EGPRS UL TBF resource reallocation requests due to LLC transmission]+[ Number of GPRS UL TBF resource reallocation requests due to DL TBF establishment]+[ Number of EGPRS UL TBF resource reallocation requests due to DL TBF establishment]+[ Number of GPRS UL TBF resumption in extend uplink state]+[ Number of EGPRS UL TBF resumption in extend uplink state])

LEMAURE - 18th March 2017  (07:08 GMT)

Ayat,
please provide more details on the formula.
Normally availability issue implies PDCH congestion (if remaining PDCH are not enough) and therefore TBF congestion. having TBF congestion means TBF assignment failure due to no resource. so for sure there is a relation between PDCH congestion and TBF success rate but not necessarily availabity...

Ayat - 6th March 2017  (09:15 GMT)

Hello

SUPPORT IN TBF COUNTER DEFINATION
IN ZTE FORMULA THERE IS NO RELATION BETWWEN TBF EST RATIO AND PDTCH CONGESTION AND CELL AVALIBLTLITY
I.E. TEX AVA =70 % AND CONGESTIN 15% tbf est % 99 , while in huawei formula there is relation , so we push zte to modify their formula
So your advice !

ouchfa - 16th May 2016  (14:40 GMT)

hi kaushik, do you mean TBF Drop?

kaushik reddy - 16th July 2015  (07:26 GMT)

loss of communication happened during dl tbf establishment . Plese let me know if any one has idea about this issue

ouchfa - 14th August 2013  (09:53 GMT)

Please to enrich with your coments.

ouchfa - 14th August 2013  (09:50 GMT)

As said below
No respnse from MS caused by:
- Invalid assignment (no valid RLC/MAC block)
- cell change or radio failure
- timer expiry befor MS response

And after investigation:

*The last causes can be results of frequency interference,

*We found this kind of fail (No response from MS) generally where no hopping is activated for EDGE TRX

*Set a new cleare frequency is one of solutions.

Best Regards & Sorry for late.

KP - 27th May 2013  (12:46 GMT)

Hi,

Please check the IMM ASS message and verify whether correct information was sent to the MS.

Check the Radio condition

Regards,
KP

Agha - 25th May 2013  (04:23 GMT)

Hi ouchfa,
Please share analysis/results..

pix - 21st May 2013  (18:38 GMT)

- try allocating your PDCH on another TRX than the one it is currently using. (the idea is to swap TCH and PDCH, so you can check TCH quality where there were previously the PDCH.)

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