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Member
Reputation: 17
High ULCE Congestion - RAN 11
Hi everyone,
I am currently trying to optimize a site with high admission rejection and this is due to high UL CE congestion between 06:00 to 18:00.Please note the following. Customer doesnt want to upgrade the CE boards and Software Licence.Please provide solution(vendorP:Huawei RAN 11)
1.There is no interference-RTWP
2.I have deactivated HSUPA
3.I have enable LCG Credit LDR Algorithm on NodeB:ON
4.Cell CAC Algorith switch enabled:
5. I have 128 CE UL/DL and WBBP board is 128CE
6. DLINTPS.384/ULINTPS.384 users are fewer
7.High DLINTPS.64/ULINTPS.64 are high.
8.Hight of antenna is high(cell is overshooting) but we dont want to downtilt.
Counters:
VS.RRC.Rej.Power.Cong - zero values( no congestion)
VS.RRC.Rej.UL.CE.Cong - high values (congested)
VS.RRC.Rej.DL.CE.Cong - no congestion
VS.RRC.Rej.Code.Cong - no congestion
VS.RRC.Rej.ULIUBBandCong - no congestion
VS.RRC.Rej.DLIUBBandCong -no congestion
Thanks
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2012-09-28 07:12 PM
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Member
Reputation: 33
Re: High ULCE Congestion - RAN 11
Hi,
Since your problem is due to the hardware then you really need to upgrade the UL CE. You already did a lot of things and still facing some issue. If they are still insisting to retain hardware then your last option will be reducing the CPICH power so that your coverage will be less and you will avoid congestion but the trade off is less traffic. If you have 20 watts trasmit power then you can make the CPICH 30 dBm instead to 33.
Br,
Sen
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Member
Reputation: 17
Re: High ULCE Congestion - RAN 11
@Senjamir, Good suggestion and solution my bro.
Originally Posted by
senjamir
Hi,
Since your problem is due to the hardware then you really need to upgrade the UL CE. You already did a lot of things and still facing some issue. If they are still insisting to retain hardware then your last option will be reducing the CPICH power so that your coverage will be less and you will avoid congestion but the trade off is less traffic. If you have 20 watts trasmit power then you can make the CPICH 30 dBm instead to 33.
Br,
Sen
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Re: High ULCE Congestion - RAN 11
hello,
well you can start by changing the initial UL preferred rate as i suspect is 64, reduce to 32 then you can go for 16...
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Member
Reputation: 17
Re: High ULCE Congestion - RAN 11
@Husam, this is a RNC level parameter,anyway thanks for the good suggestion.
Originally Posted by
husam
hello,
well you can start by changing the initial UL preferred rate as i suspect is 64, reduce to 32 then you can go for 16...
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Re: High ULCE Congestion - RAN 11
what is UL total equivalent user number?
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Member
Reputation: 17
Re: High ULCE Congestion - RAN 11
UL ENU is not congested.
Average of 32, 9, 27 for sector 7,8,9
thanks
Originally Posted by
husam
what is UL total equivalent user number?
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Member
Reputation: 68
Re: High ULCE Congestion - RAN 11
Originally Posted by
scientist
Hi everyone,
I am currently trying to optimize a site with high admission rejection and this is due to high UL CE congestion between 06:00 to 18:00.Please note the following. Customer doesnt want to upgrade the CE boards and Software Licence.Please provide solution(vendorP:Huawei RAN 11)
1.There is no interference-RTWP
2.I have deactivated HSUPA
3.I have enable LCG Credit LDR Algorithm on NodeB:ON
4.Cell CAC Algorith switch enabled:
5. I have 128 CE UL/DL and WBBP board is 128CE
6. DLINTPS.384/ULINTPS.384 users are fewer
7.High DLINTPS.64/ULINTPS.64 are high.
8.Hight of antenna is high(cell is overshooting) but we dont want to downtilt.
Counters:
VS.RRC.Rej.Power.Cong - zero values( no congestion)
VS.RRC.Rej.UL.CE.Cong - high values (congested)
VS.RRC.Rej.DL.CE.Cong - no congestion
VS.RRC.Rej.Code.Cong - no congestion
VS.RRC.Rej.ULIUBBandCong - no congestion
VS.RRC.Rej.DLIUBBandCong -no congestion
Thanks
What are the actions that you are using for the LDR? for CE If you have more than a carrier, it's better to have Interfreq load balancing as a first ation and BE rate reduction as a second action, then IRAT handover as a third action.. If single carrier then ignore the intefreq load balancing..
You can also enable the service based handover for AMR so you can improve the CS CSSR..it's not recommended to disable HSUPA as it will affect the HSDPA throughput ..
Good Luck..
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Member
Reputation: 98
Re: High ULCE Congestion - RAN 11
anyone has experiences high ce congestion while ce utilization still < 100% (around 50%) ?
How to check and solve this ...
any comment are very appreciated
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Member
Reputation: 17
Re: High ULCE Congestion - RAN 11
@ White_Noise, This site is a single carrier but I have these are my setting(default).
1.Code Adjust
2.Inter-freq load handover
3.BE Traffic rate reduction
Can disable inter frequency load handover?
Also I have tried activating Service Base handover and it never work in Huawei.
In E******* service base handover was working.
Can you provide me with procedure to activate service base handover.
The customer is using Demo licence,can these be the reason why it it not working?
BR
Scientist
Last edited by scientist; 2012-10-05 at 07:21 PM
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