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Member
Reputation: 62
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2011-01-03 09:28 PM
# ADS
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Senior Member
Reputation: 387
Re: Issue with RAB Setup success Rate
if the failures are occurred for all cells , the bottleneck must be @ upper level .... not a cell level.
So ... try to investigate your RNC for any kind of bottlenecks , licenses, ....etc
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Member
Reputation: 119
Re: Issue with RAB Setup success Rate
Check the CAC parameters.
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Member
Reputation: 255
Re: Issue with RAB Setup success Rate
Originally Posted by
no_1'sfasterthanradiowave
Hi All,
Please for your comments if anyone has seen the following issue:
High number of AMR RAB setup failures exist in all cells of a RNC during an hour of big demand /such as New Years Eve
/. Oddly enough all cells are with similar success rate of about 75% during that hour.
Failures are under "Requested max bit rate not available" in the RNC and "VS.RAB.FailEstCS.Unsp" on cell level but no blocking at all in Uu or elsewhere!
!
Thanks in advance!
Hi,
failure "Request Max Bit rate is not avilable" is in RAB assignment response message, please check the RAB profile in RAB assignment request message came from core network in order to have full picture, thanks.
regards,
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Member
Reputation: 62
Re: Issue with RAB Setup success Rate
Thank u guys for your replies...what I have so far is that, yes it is an admission issue and scarce resource is Iu-CS. Will come back if more is revealed.
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Junior Member
Reputation: 10
Re: Issue with RAB Setup success Rate
Hi All,
HOW to improve IRAT-PS for cells which are having good IRAT CS.
anything on parameter setttings. we cannot change 2D and 2F event it should remain constant.
thanks in advance
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Member
Reputation: 73
Re: Issue with RAB Setup success Rate
Originally Posted by
coolashishsaxena
Hi All,
HOW to improve IRAT-PS for cells which are having good IRAT CS.
anything on parameter setttings. we cannot change 2D and 2F event it should remain constant.
thanks in advance
changing from periodic to event based helps a lot..
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Member
Reputation: 71
Re: Issue with RAB Setup success Rate
As well it was mentionated, you can check bottle neck, remember its proportional when increase traffic, try to check links of Iu-Cs
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Re: Issue with RAB Setup success Rate
Originally Posted by
coolashishsaxena
Hi All,
HOW to improve IRAT-PS for cells which are having good IRAT CS.
anything on parameter setttings. we cannot change 2D and 2F event it should remain constant.
thanks in advance
Which is your UTRAN vendor?
You can keep Event 2D/2F as constant, it is for Inter freq. Your aim is to improve PS i-RAT right? So better tune thresholds for 1E/1F.
You can look at the i-RAT HO event reason count (RSCP or EcNo). There will be counters for that. For eg: if you have more no: of PS-iRAT HO events on RSCP, then, tune the 1E/1F RSCP thresholds.
More clarity can be given based on your vendor.
R's
Nimo
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Junior Member
Reputation: 11
Re: Issue with RAB Setup success Rate
Originally Posted by
nimopaul
Which is your UTRAN vendor?
You can keep Event 2D/2F as constant, it is for Inter freq. Your aim is to improve PS i-RAT right? So better tune thresholds for 1E/1F.
You can look at the i-RAT HO event reason count (RSCP or EcNo). There will be counters for that. For eg: if you have more no: of PS-iRAT HO events on RSCP, then, tune the 1E/1F RSCP thresholds.
More clarity can be given based on your vendor.
R's
Nimo
Vendor is E///
Can you tell me counter??
Thanks
Last edited by jvalant; 2011-08-23 at 01:23 AM
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