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Member
Reputation: 72
CNBAP Load?
Hi Experts, I came to a new term to measure Load of NodeB in 3G network - "CNBAP". Someone please explain CNBAP, its thresholds and methods to tackle high loads. Regards, jack.
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2012-07-17 05:21 AM
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1 out of 1 members found this post helpful.
Re: CNBAP Load?
maybe some tranmission guy can help u out....since CNBAP is part of RAN ATM Connection....
Attachment 28687
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Member
Reputation: 23
Re: CNBAP Load?
Originally Posted by
usama0795
maybe some tranmission guy can help u out....since CNBAP is part of RAN ATM Connection....
Attachment 28687
Hi,
How to calculate the CNBAP nodeB signalling loading?
IUB RL setup attempt + IUB RL add attempt + IUB RL recong attempt ??
/br
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Member
Reputation: 72
Re: CNBAP Load?
My observation was that CNBAP being used to measure the NodeB load or the NodeB board load, but could find much details.
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Member
Reputation: 16
1 out of 1 members found this post helpful.
Re: CNBAP Load?
In HUAWEI, we used formula :
Busy Hour CNBAP = 2 * (VS.IUB.AttRLSetup + VS.IUB.AttRLAdd + VS.IUB.AttRLRecfg*2) /3600s
CNBAP Capacity = 120 CNBAP/s for 2 WBBP (RAN 13)
CNBAP Util = Busy Hour CNBAP/CNBAP Capacity
we used "safety" threshold about 80%, if CNBAP util already reach/above 80% , usually we proposed add more WBBP board to add CNBAP capacity.
thanks.
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Post Thanks - 1 Thanks
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Member
Reputation: 23
1 out of 1 members found this post helpful.
Re: CNBAP Load?
Originally Posted by
kakayanu
In HUAWEI, we used formula :
Busy Hour CNBAP = 2 * (VS.IUB.AttRLSetup + VS.IUB.AttRLAdd + VS.IUB.AttRLRecfg*2) /3600s
CNBAP Capacity = 120 CNBAP/s for 2 WBBP (RAN 13)
CNBAP Util = Busy Hour CNBAP/CNBAP Capacity
we used "safety" threshold about 80%, if CNBAP util already reach/above 80% , usually we proposed add more WBBP board to add CNBAP capacity.
thanks.
Thanks.
Currently, we are using slightly different of monitor threshold with "1.7" times factor.
Hourly MAX CNBAP = 1.7*(VS.IUB.AttRLSetup + VS.IUB.AttRLAdd + VS.IUB.AttRLRecfg*2) /3600
with 70% of safety threshold.
Can slot in UTRP card to improve the capability
1 WBBP - 60 CNBAP/s
2 WBBP - 120 CNBAP/s
3 WBBP - 170 CNBAP/s
4 WBBP - 170 CNBAP/s
3 WBBP + UTRP - 180 CNBAP/s
4 WBBP + UTRP - 240 CNBAP/s
/br
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Post Thanks - 1 Thanks
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Member
Reputation: 16
Re: CNBAP Load?
Originally Posted by
blueee
Thanks.
Currently, we are using slightly different of monitor threshold with "1.7" times factor.
Hourly MAX CNBAP = 1.7*(VS.IUB.AttRLSetup + VS.IUB.AttRLAdd + VS.IUB.AttRLRecfg*2) /3600
with 70% of safety threshold.
Can slot in UTRP card to improve the capability
1 WBBP - 60 CNBAP/s
2 WBBP - 120 CNBAP/s
3 WBBP - 170 CNBAP/s
4 WBBP - 170 CNBAP/s
3 WBBP + UTRP - 180 CNBAP/s
4 WBBP + UTRP - 240 CNBAP/s
/br
thanks bro..btw do you have docs to explained CNBAP capability with configured WBBP(+UTRP)?
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Member
Reputation: 72
Re: CNBAP Load?
@Kakayanu, @Blueee . Appreciate your comments. Please share Huawei's document supporting your comments.
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Member
Reputation: 16
Re: CNBAP Load?
dear blueee,
how much capacity if we use: 2WBBP+1 UTRP? only 120 CNBAP/s or..? because you didnt mention below configs..we have NodeB with those spec (2 WBBP+1 UTRP)
Originally Posted by
blueee
Thanks.
Currently, we are using slightly different of monitor threshold with "1.7" times factor.
Hourly MAX CNBAP = 1.7*(VS.IUB.AttRLSetup + VS.IUB.AttRLAdd + VS.IUB.AttRLRecfg*2) /3600
with 70% of safety threshold.
Can slot in UTRP card to improve the capability
1 WBBP - 60 CNBAP/s
2 WBBP - 120 CNBAP/s
3 WBBP - 170 CNBAP/s
4 WBBP - 170 CNBAP/s
3 WBBP + UTRP - 180 CNBAP/s
4 WBBP + UTRP - 240 CNBAP/s
/br
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Member
Reputation: 164
Re: CNBAP Load?
Hi..
Somebody has for HBBU and EBBC in DBS3800 huawei?
Please share...
Thanks..
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