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Member
Reputation: 16
Maximum no. of SDCCHs
Dear Experts,
Please i need your support to know the maximum number of SDCCHs could be defined per TRX in E///, appreciate if any one can share document for that.
Many thanks
haider79
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2013-01-03 08:27 PM
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Junior Member
Reputation: 11
Re: Maximum no. of SDCCHs
Dear Haider,
I do not have a document but you can judge like this:
One can define 25% of the TRX capacity of a channel group. In E*******, there is a parameter called MAXNOOFSDCCH which has to be toggled allowing one to define more than 25% of the TRX capacity.
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Junior Member
Reputation: 11
Re: Maximum no. of SDCCHs
An example is about a cell with 4 TRXs.
1 BCCH TRX, 3 TCH TRX
We could define max 6 SDCCHs (2 from the BCCH and the 6 in the TCH TRXs). 8 were max, it is 25 % of the total capacity of these 4 TRXs.
Can you post you cell configurations?
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Senior Member
Reputation: 491
Re: Maximum no. of SDCCHs
is it preferred to define all Static SDs in one TRX or distribute between TRXs or no difference at all?
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Junior Member
Reputation: 11
1 out of 1 members found this post helpful.
Re: Maximum no. of SDCCHs
Well, it depends on the band. Go for those which are interference free. The BCCH is clean usually, so I have always preferred the SDCCHs on that. SDCCH can also be put on hopping, & I have heard of claims that it brings improvement. I have seen degradation when I tried the same.
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Re: Maximum no. of SDCCHs
Its depend on the SD traffic offered on that cell which depend on the cell location (Lac boarder, downtown, etc...) so finally you judge how many SD required in each cell independently on the TRX number.
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Member
Reputation: 54
Re: Maximum no. of SDCCHs
Dear All,
Please note E// allows,
1) SD can be configured purely based on defined TRX. (First limitation)
2) BSC Exchange property MAXNOOFSDCCH allows you to define 2,3,4 SD per TRX, still you cannot cross point 1. It is still your limiting factor (# of TRX configured)
3) (# of TRX configured) can only be crossed if you have additional feature INCREASEDSDCAP, Then you can have double the SDCCH channel w.r.t (# of TRX configured)
If anyone have anyother querey, i.e OL & UL scenarios etc dont hesitate, let me know.
BR//
Imran
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Junior Member
Reputation: 11
Re: Maximum no. of SDCCHs
Dear Imran,
Feature no 3 came in which BSC version of E******* ?
BR//
Ahmed M
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Member
Reputation: 16
Re: Maximum no. of SDCCHs
Thanks Ahmed,
I have single band -two configuration- cell here, i wanted to increase SDs from 2 to 3 but DB team said it is not possible! it is correct?
BR,
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Junior Member
Reputation: 11
Re: Maximum no. of SDCCHs
Please check the post by Imran Rafique below. Check its point 1 & 3. I think you may get the answer, you need to check if the mentioned features are enabled at BSC level or not.
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