The problem of traffic to the RNC E******* 3810 and RAB Setup PS

[GrayDog]

Hi all! If someone has a similar experience, please help.
In the busy hour of HS users at the RNC (around 19:00-21:00) there is a significant reduction in packet traffic. At the same time increasing the percentage of unsuccessful RAB Setup PS. Counters for the reasons - empty (Lack UL / DL Hw, etc.). I think the problem lies in the PS Core (SGSN may or GGSN), but still can not find.
Grateful for any ideas.

[roloramos]

Hi Friend..
What about the MP, DC, CC, PDR load??

[s52d]

Hi!

How about licencing capacity?
A while ago (P7 times?) there were serios problems when licence limits were approached.

BR
s52d

[GrayDog]

Hi Friend..
What about the MP, DC, CC, PDR load??

Hi,
MainProcessor load High, but counter pmNoRejRrcConnMpLoadC is empty. I understand that in case of overload MP - will be failures on RRC pmNoRejRrcConnMpLoadC?
DC, CC, PDR load - How check problem (any counter or formula load) ? Now i read WCDMA RAN P7 Troubleshooting - about DC, CC, PDR.

Traffic RNC - with an increase in the number of HS users, throughput IuB reduced to RNC
RNC trafic problem.jpg

[GrayDog]

Hi!
How about licencing capacity?
A while ago (P7 times?) there were serios problems when licence limits were approached.

Hi!
RNC SW - P7, License about 925 Mbitps, RNC Iub Thr ~ 800 Mbitps
From experience, licensing restrictions cut traffic ( limiting the RNC Iub traffic ), but does not lead to the concavity of curve

[aygo]

Hello, Sergey

how to RNC connected to NodeB? and which model traffic as HSDPA users?

[roloramos]

The table on Eniq DB is:
DC_E_RAN_DCDEVICE_RAW A

The KPI are:
SUM(pmSamplesMeasuredLoad)=0 THEN 0 ELSE
SUM(pmSumMeasuredLoad)/SUM(pmSamplesMeasuredLoad) END AS MP_LOAD

SUM(pmSamplesMeasuredCcSpLoad)=0 THEN 0 ELSE
SUM(pmSumMeasuredCcSpLoad)/SUM(pmSamplesMeasuredCcSpLoad) END AS CC_LOAD

SUM(pmSamplesMeasuredDcSpLoad)=0 THEN 0 ELSE
SUM(pmSumMeasuredDcSpLoad)/SUM(pmSamplesMeasuredDcSpLoad) END AS DC_LOAD

SUM(pmSamplesMeasuredPdrSpLoad)=0 THEN 0 ELSE
SUM(pmSumMeasuredPdrSpLoad)/SUM(pmSamplesMeasuredPdrSpLoad) END AS PDR_LOAD

The QUERY is:

SELECT
M.RNC,
M.DATETIME_ID,
MP_LOAD,
CC_LOAD,
DC_LOAD,
PDR_LOAD
FROM
(
select
A.RNC,
A.DATETIME_ID,
CASE WHEN SUM(pmSamplesMeasuredLoad)=0 THEN 0 ELSE
SUM(pmSumMeasuredLoad)/SUM(pmSamplesMeasuredLoad) END AS MP_LOAD
from DC_E_RAN_LOADCONTROL_RAW A
WHERE DATETIME_ID>='2011-11-10 01:00' AND DATETIME_ID<='2011-11-22 23:00' and RNC='rnc_name'
GROUP BY DATETIME_ID, RNC)M, (select
A.RNC,
A.DATETIME_ID,

CASE WHEN SUM(pmSamplesMeasuredCcSpLoad)=0 THEN 0 ELSE
SUM(pmSumMeasuredCcSpLoad)/SUM(pmSamplesMeasuredCcSpLoad) END AS CC_LOAD
from DC_E_RAN_CCDEVICE_RAW A
WHERE DATETIME_ID>='2011-11-10 01:00' AND DATETIME_ID<='2011-11-22 23:00' and RNC='rnc_name'
GROUP BY DATETIME_ID, RNC)C, (select
A.RNC,
A.DATETIME_ID,
CASE WHEN SUM(pmSamplesMeasuredDcSpLoad)=0 THEN 0 ELSE
SUM(pmSumMeasuredDcSpLoad)/SUM(pmSamplesMeasuredDcSpLoad) END AS DC_LOAD
from DC_E_RAN_DCDEVICE_RAW A
WHERE DATETIME_ID>='2011-11-10 01:00' AND DATETIME_ID<='2011-11-22 23:00' and RNC='rnc_name'
GROUP BY DATETIME_ID, RNC)D, (select
A.RNC,
A.DATETIME_ID,
CASE WHEN SUM(pmSamplesMeasuredPdrSpLoad)=0 THEN 0 ELSE
SUM(pmSumMeasuredPdrSpLoad)/SUM(pmSamplesMeasuredPdrSpLoad) END AS PDR_LOAD
from DC_E_RAN_PDRDEVICE_RAW A
WHERE DATETIME_ID>='2011-11-10 01:00' AND DATETIME_ID<='2011-11-22 23:00' and RNC='rnc_name'
GROUP BY DATETIME_ID, RNC)P
WHERE M.RNC=C.RNC AND M.DATETIME_ID=C.DATETIME_ID
AND M.RNC=D.RNC AND M.DATETIME_ID=D.DATETIME_ID
AND M.RNC=P.RNC AND M.DATETIME_ID=P.DATETIME_ID

[GrayDog]

Thanks roloramos !
That's what I got
RNC_load_control_.JPG

[roloramos]

thresholds used and recomended for E*******:

- mMP Load……………………………………Less than 75%
- RANAP/RNSAP MP Load………………….Less than65%
- SP (Dc Load)……………………………….. Less than85%
- SP Cc, Pdr) Load……………………………Less than60%
- RNC Active Users……………………………Less than90% of licensed capacity
- RNC Iub Throughput……………………….. Lessthan 90% of licensed capacity, but its value depends of the other thresholds

[GrayDog]

Hello, Sergey
how to RNC connected to NodeB? and which model traffic as HSDPA users?

Hello, RNC connected to NodeB over ATM,
about traffic model is difficult for me to answer, can you describe the necessary parameters of the model or how to define it?