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PDCHs

Viewing 15 posts - 1 through 15 (of 35 total)
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• #62278
guru
Guest

“Maximum Ratio Threshold of PDCHs in a Cell”

Hi all ,Can any one explain me the actual discription of this huawei parameter..Is it for to calculate static PDCH or Dynamic?

#62279
Bijoy
Guest

Guru
This parameter actually defines the maximum no. of PDCH’s in a cell(dynamic+static).
Consider an Example.
Say you set “Maximum Ratio Threshold of PDCHs in a Cell” to 30%
No. of Static PDCH=3
No.of TCH =28
Then Max available PDCH=(28+3)*30/100 =9.3

So,the maximum no. of Dynamic PDCH will be (9-3)=6.

Br\\
Bijoy

#62280
GURU
Guest

Thnaks Bijoy for the prompt reply..How you are taken No.of TCH =28 ? how many carriers 3?

#62281
guru
Guest

not 3 ..i think 4 ? also tell me whats the actual use of this parameter

#62282
Bijoy
Guest

Yes,I have taken 4 TRX for the cell.By this parameter you can optimize the Dynamic PDCH in a cell as per your requirement.

Br\\
Bijoy

#62283
Prabeen
Guest

Hi Bijoy,

Can u tell me on wat basis should i do the TS expansion for EDGE?? Which criteria should i take n wat s the threshold. pls help

#62284
guru
Guest

Thanks a lot Bijoy

#62285
Bijoy
Guest

Hi Prabeen
TS increment for EGPRS/GPRS should be done as per soft n hard blocking.For soft blocking increase Dynamic TS & for Hard increase the fixed ones.
Criteria
Soft Blocking > 5%
Hard Blocking > 2%

You can try flexi abis also to obtain good data KPI’s

Br\\
Bijoy

#62286
Prabeen
Guest

Thanks Bijoy,

But could u explan wat is soft n hard blocking.

#62287
guru
Guest

Bijoy one more doubt ..what would be the impact if i make the ratioo to 100% ?
Also pls explain soft n hard blocking.

#62288
Bijoy
Guest

Guru/Prabeen
Hard Blocking means user is totally deprived to get any channel for data,i’e PDCH.
Soft Blocking means user is not totally deprived of data channel,but it is not up to the mark of the user capability,say the MS is capable of 4 TSL’s in DL & 2 in UL,but it is assigned 2 in DL & 1 in UL.

Guru
If you make that 100%,it will mean all your TCH’s can be used as dynamic PDCH.In that case,the parameter “Maximum PDCH numbers of carrier” should be set as “8”.

But never set it as 100%,it will affect the CS services

Br\\
Bijoy

#62289
Prabeen
Guest

Hi Bijoy,

That was a beautiful explanation. Also, Could u tel me the process or command to retreive the data from server in Ericsson system.

And, I have got most of my Cells with High Packet Channel Allocation Failure. Could you tell me thereason for this? The CS traffic is considerably low for all these cells. N i dont have any RPP constraint. Wher else should i invent?

pls help.

#62290
guru
Guest

Thanks Bijoy , wonderful,

#62291
Bijoy
Guest

Hi Prabeen
What is your vendor?Is it Huawei??

Br\\
Bijoy

#62292
Prabeen
Guest

Hi Bijoy,

Its Ericsson

Viewing 15 posts - 1 through 15 (of 35 total)
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